git.sesse.net Git - ffmpeg/blob - configure

   1 #!/bin/sh
   2 #
   3 # FFmpeg configure script
   4 #
   5 # Copyright (c) 2000-2002 Fabrice Bellard
   6 # Copyright (c) 2005-2008 Diego Biurrun
   7 # Copyright (c) 2005-2008 Mans Rullgard
   8 #
   9
  10 # Prevent locale nonsense from breaking basic text processing.
  11 LC_ALL=C
  12 export LC_ALL
  13
  14 # make sure we are running under a compatible shell
  15 # try to make this part work with most shells
  16
  17 try_exec(){
  18     echo "Trying shell $1"
  19     type "$1" > /dev/null 2>&1 && exec "$@"
  20 }
  21
  22 unset foo
  23 (: ${foo%%bar}) 2> /dev/null
  24 E1="$?"
  25
  26 (: ${foo?}) 2> /dev/null
  27 E2="$?"
  28
  29 if test "$E1" != 0 || test "$E2" = 0; then
  30     echo "Broken shell detected.  Trying alternatives."
  31     export FF_CONF_EXEC
  32     if test "0$FF_CONF_EXEC" -lt 1; then
  33         FF_CONF_EXEC=1
  34         try_exec bash "$0" "$@"
  35     fi
  36     if test "0$FF_CONF_EXEC" -lt 2; then
  37         FF_CONF_EXEC=2
  38         try_exec ksh "$0" "$@"
  39     fi
  40     if test "0$FF_CONF_EXEC" -lt 3; then
  41         FF_CONF_EXEC=3
  42         try_exec /usr/xpg4/bin/sh "$0" "$@"
  43     fi
  44     echo "No compatible shell script interpreter found."
  45     echo "This configure script requires a POSIX-compatible shell"
  46     echo "such as bash or ksh."
  47     echo "THIS IS NOT A BUG IN FFMPEG, DO NOT REPORT IT AS SUCH."
  48     echo "Instead, install a working POSIX-compatible shell."
  49     echo "Disabling this configure test will create a broken FFmpeg."
  50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
  51         echo "This bash version ($BASH_VERSION) is broken on your platform."
  52         echo "Upgrade to a later version if available."
  53     fi
  54     exit 1
  55 fi
  56
  57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
  58
  59 show_help(){
  60     cat <<EOF
  61 Usage: configure [options]
  62 Options: [defaults in brackets after descriptions]
  63
  64 Help options:
  65   --help                   print this message
  66   --quiet                  Suppress showing informative output
  67   --list-decoders          show all available decoders
  68   --list-encoders          show all available encoders
  69   --list-hwaccels          show all available hardware accelerators
  70   --list-demuxers          show all available demuxers
  71   --list-muxers            show all available muxers
  72   --list-parsers           show all available parsers
  73   --list-protocols         show all available protocols
  74   --list-bsfs              show all available bitstream filters
  75   --list-indevs            show all available input devices
  76   --list-outdevs           show all available output devices
  77   --list-filters           show all available filters
  78
  79 Standard options:
  80   --logfile=FILE           log tests and output to FILE [ffbuild/config.log]
  81   --disable-logging        do not log configure debug information
  82   --fatal-warnings         fail if any configure warning is generated
  83   --prefix=PREFIX          install in PREFIX [$prefix_default]
  84   --bindir=DIR             install binaries in DIR [PREFIX/bin]
  85   --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
  86   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/ffmpeg]
  87   --libdir=DIR             install libs in DIR [PREFIX/lib]
  88   --shlibdir=DIR           install shared libs in DIR [LIBDIR]
  89   --incdir=DIR             install includes in DIR [PREFIX/include]
  90   --mandir=DIR             install man page in DIR [PREFIX/share/man]
  91   --pkgconfigdir=DIR       install pkg-config files in DIR [LIBDIR/pkgconfig]
  92   --enable-rpath           use rpath to allow installing libraries in paths
  93                            not part of the dynamic linker search path
  94                            use rpath when linking programs (USE WITH CARE)
  95   --install-name-dir=DIR   Darwin directory name for installed targets
  96
  97 Licensing options:
  98   --enable-gpl             allow use of GPL code, the resulting libs
  99                            and binaries will be under GPL [no]
 100   --enable-version3        upgrade (L)GPL to version 3 [no]
 101   --enable-nonfree         allow use of nonfree code, the resulting libs
 102                            and binaries will be unredistributable [no]
 103
 104 Configuration options:
 105   --disable-static         do not build static libraries [no]
 106   --enable-shared          build shared libraries [no]
 107   --enable-small           optimize for size instead of speed
 108   --disable-runtime-cpudetect disable detecting CPU capabilities at runtime (smaller binary)
 109   --enable-gray            enable full grayscale support (slower color)
 110   --disable-swscale-alpha  disable alpha channel support in swscale
 111   --disable-all            disable building components, libraries and programs
 112   --disable-autodetect     disable automatically detected external libraries [no]
 113
 114 Program options:
 115   --disable-programs       do not build command line programs
 116   --disable-ffmpeg         disable ffmpeg build
 117   --disable-ffplay         disable ffplay build
 118   --disable-ffprobe        disable ffprobe build
 119
 120 Documentation options:
 121   --disable-doc            do not build documentation
 122   --disable-htmlpages      do not build HTML documentation pages
 123   --disable-manpages       do not build man documentation pages
 124   --disable-podpages       do not build POD documentation pages
 125   --disable-txtpages       do not build text documentation pages
 126
 127 Component options:
 128   --disable-avdevice       disable libavdevice build
 129   --disable-avcodec        disable libavcodec build
 130   --disable-avformat       disable libavformat build
 131   --disable-swresample     disable libswresample build
 132   --disable-swscale        disable libswscale build
 133   --disable-postproc       disable libpostproc build
 134   --disable-avfilter       disable libavfilter build
 135   --enable-avresample      enable libavresample build (deprecated) [no]
 136   --disable-pthreads       disable pthreads [autodetect]
 137   --disable-w32threads     disable Win32 threads [autodetect]
 138   --disable-os2threads     disable OS/2 threads [autodetect]
 139   --disable-network        disable network support [no]
 140   --disable-dct            disable DCT code
 141   --disable-dwt            disable DWT code
 142   --disable-error-resilience disable error resilience code
 143   --disable-lsp            disable LSP code
 144   --disable-lzo            disable LZO decoder code
 145   --disable-mdct           disable MDCT code
 146   --disable-rdft           disable RDFT code
 147   --disable-fft            disable FFT code
 148   --disable-faan           disable floating point AAN (I)DCT code
 149   --disable-pixelutils     disable pixel utils in libavutil
 150
 151 Individual component options:
 152   --disable-everything     disable all components listed below
 153   --disable-encoder=NAME   disable encoder NAME
 154   --enable-encoder=NAME    enable encoder NAME
 155   --disable-encoders       disable all encoders
 156   --disable-decoder=NAME   disable decoder NAME
 157   --enable-decoder=NAME    enable decoder NAME
 158   --disable-decoders       disable all decoders
 159   --disable-hwaccel=NAME   disable hwaccel NAME
 160   --enable-hwaccel=NAME    enable hwaccel NAME
 161   --disable-hwaccels       disable all hwaccels
 162   --disable-muxer=NAME     disable muxer NAME
 163   --enable-muxer=NAME      enable muxer NAME
 164   --disable-muxers         disable all muxers
 165   --disable-demuxer=NAME   disable demuxer NAME
 166   --enable-demuxer=NAME    enable demuxer NAME
 167   --disable-demuxers       disable all demuxers
 168   --enable-parser=NAME     enable parser NAME
 169   --disable-parser=NAME    disable parser NAME
 170   --disable-parsers        disable all parsers
 171   --enable-bsf=NAME        enable bitstream filter NAME
 172   --disable-bsf=NAME       disable bitstream filter NAME
 173   --disable-bsfs           disable all bitstream filters
 174   --enable-protocol=NAME   enable protocol NAME
 175   --disable-protocol=NAME  disable protocol NAME
 176   --disable-protocols      disable all protocols
 177   --enable-indev=NAME      enable input device NAME
 178   --disable-indev=NAME     disable input device NAME
 179   --disable-indevs         disable input devices
 180   --enable-outdev=NAME     enable output device NAME
 181   --disable-outdev=NAME    disable output device NAME
 182   --disable-outdevs        disable output devices
 183   --disable-devices        disable all devices
 184   --enable-filter=NAME     enable filter NAME
 185   --disable-filter=NAME    disable filter NAME
 186   --disable-filters        disable all filters
 187
 188 External library support:
 189
 190   Using any of the following switches will allow FFmpeg to link to the
 191   corresponding external library. All the components depending on that library
 192   will become enabled, if all their other dependencies are met and they are not
 193   explicitly disabled. E.g. --enable-libopus will enable linking to
 194   libopus and allow the libopus encoder to be built, unless it is
 195   specifically disabled with --disable-encoder=libopus.
 196
 197   Note that only the system libraries are auto-detected. All the other external
 198   libraries must be explicitly enabled.
 199
 200   Also note that the following help text describes the purpose of the libraries
 201   themselves, not all their features will necessarily be usable by FFmpeg.
 202
 203   --disable-alsa           disable ALSA support [autodetect]
 204   --disable-appkit         disable Apple AppKit framework [autodetect]
 205   --disable-avfoundation   disable Apple AVFoundation framework [autodetect]
 206   --enable-avisynth        enable reading of AviSynth script files [no]
 207   --disable-bzlib          disable bzlib [autodetect]
 208   --disable-coreimage      disable Apple CoreImage framework [autodetect]
 209   --enable-chromaprint     enable audio fingerprinting with chromaprint [no]
 210   --enable-frei0r          enable frei0r video filtering [no]
 211   --enable-gcrypt          enable gcrypt, needed for rtmp(t)e support
 212                            if openssl, librtmp or gmp is not used [no]
 213   --enable-gmp             enable gmp, needed for rtmp(t)e support
 214                            if openssl or librtmp is not used [no]
 215   --enable-gnutls          enable gnutls, needed for https support
 216                            if openssl, libtls or mbedtls is not used [no]
 217   --disable-iconv          disable iconv [autodetect]
 218   --enable-jni             enable JNI support [no]
 219   --enable-ladspa          enable LADSPA audio filtering [no]
 220   --enable-libaom          enable AV1 video encoding/decoding via libaom [no]
 221   --enable-libaribb24      enable ARIB text and caption decoding via libaribb24 [no]
 222   --enable-libass          enable libass subtitles rendering,
 223                            needed for subtitles and ass filter [no]
 224   --enable-libbluray       enable BluRay reading using libbluray [no]
 225   --enable-libbs2b         enable bs2b DSP library [no]
 226   --enable-libcaca         enable textual display using libcaca [no]
 227   --enable-libcelt         enable CELT decoding via libcelt [no]
 228   --enable-libcdio         enable audio CD grabbing with libcdio [no]
 229   --enable-libcodec2       enable codec2 en/decoding using libcodec2 [no]
 230   --enable-libdav1d        enable AV1 decoding via libdav1d [no]
 231   --enable-libdavs2        enable AVS2 decoding via libdavs2 [no]
 232   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 233                            and libraw1394 [no]
 234   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
 235   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
 236   --enable-libfontconfig   enable libfontconfig, useful for drawtext filter [no]
 237   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
 238   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
 239   --enable-libglslang      enable GLSL->SPIRV compilation via libglslang [no]
 240   --enable-libgme          enable Game Music Emu via libgme [no]
 241   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 242   --enable-libiec61883     enable iec61883 via libiec61883 [no]
 243   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 244   --enable-libjack         enable JACK audio sound server [no]
 245   --enable-libklvanc       enable Kernel Labs VANC processing [no]
 246   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
 247   --enable-liblensfun      enable lensfun lens correction [no]
 248   --enable-libmodplug      enable ModPlug via libmodplug [no]
 249   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 250   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 251   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 252   --enable-libopencv       enable video filtering via libopencv [no]
 253   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
 254   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 255   --enable-libopenmpt      enable decoding tracked files via libopenmpt [no]
 256   --enable-libopenvino     enable OpenVINO as a DNN module backend
 257                            for DNN based filters like dnn_processing [no]
 258   --enable-libopus         enable Opus de/encoding via libopus [no]
 259   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 260   --enable-librabbitmq     enable RabbitMQ library [no]
 261   --enable-librav1e        enable AV1 encoding via rav1e [no]
 262   --enable-librist         enable RIST via librist [no]
 263   --enable-librsvg         enable SVG rasterization via librsvg [no]
 264   --enable-librubberband   enable rubberband needed for rubberband filter [no]
 265   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 266   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 267   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
 268   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
 269   --enable-libsoxr         enable Include libsoxr resampling [no]
 270   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 271   --enable-libsrt          enable Haivision SRT protocol via libsrt [no]
 272   --enable-libssh          enable SFTP protocol via libssh [no]
 273   --enable-libsvtav1       enable AV1 encoding via SVT [no]
 274   --enable-libtensorflow   enable TensorFlow as a DNN module backend
 275                            for DNN based filters like sr [no]
 276   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
 277   --enable-libtheora       enable Theora encoding via libtheora [no]
 278   --enable-libtls          enable LibreSSL (via libtls), needed for https support
 279                            if openssl, gnutls or mbedtls is not used [no]
 280   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 281   --enable-libuavs3d       enable AVS3 decoding via libuavs3d [no]
 282   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 283   --enable-libvidstab      enable video stabilization using vid.stab [no]
 284   --enable-libvmaf         enable vmaf filter via libvmaf [no]
 285   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 286   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 287                            native implementation exists [no]
 288   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 289   --enable-libwebp         enable WebP encoding via libwebp [no]
 290   --enable-libx264         enable H.264 encoding via x264 [no]
 291   --enable-libx265         enable HEVC encoding via x265 [no]
 292   --enable-libxavs         enable AVS encoding via xavs [no]
 293   --enable-libxavs2        enable AVS2 encoding via xavs2 [no]
 294   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
 295   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
 296   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
 297   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
 298   --enable-libxvid         enable Xvid encoding via xvidcore,
 299                            native MPEG-4/Xvid encoder exists [no]
 300   --enable-libxml2         enable XML parsing using the C library libxml2, needed
 301                            for dash demuxing support [no]
 302   --enable-libzimg         enable z.lib, needed for zscale filter [no]
 303   --enable-libzmq          enable message passing via libzmq [no]
 304   --enable-libzvbi         enable teletext support via libzvbi [no]
 305   --enable-lv2             enable LV2 audio filtering [no]
 306   --disable-lzma           disable lzma [autodetect]
 307   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
 308   --enable-mbedtls         enable mbedTLS, needed for https support
 309                            if openssl, gnutls or libtls is not used [no]
 310   --enable-mediacodec      enable Android MediaCodec support [no]
 311   --enable-mediafoundation enable encoding via MediaFoundation [auto]
 312   --enable-libmysofa       enable libmysofa, needed for sofalizer filter [no]
 313   --enable-openal          enable OpenAL 1.1 capture support [no]
 314   --enable-opencl          enable OpenCL processing [no]
 315   --enable-opengl          enable OpenGL rendering [no]
 316   --enable-openssl         enable openssl, needed for https support
 317                            if gnutls, libtls or mbedtls is not used [no]
 318   --enable-pocketsphinx    enable PocketSphinx, needed for asr filter [no]
 319   --disable-sndio          disable sndio support [autodetect]
 320   --disable-schannel       disable SChannel SSP, needed for TLS support on
 321                            Windows if openssl and gnutls are not used [autodetect]
 322   --disable-sdl2           disable sdl2 [autodetect]
 323   --disable-securetransport disable Secure Transport, needed for TLS support
 324                            on OSX if openssl and gnutls are not used [autodetect]
 325   --enable-vapoursynth     enable VapourSynth demuxer [no]
 326   --enable-vulkan          enable Vulkan code [no]
 327   --disable-xlib           disable xlib [autodetect]
 328   --disable-zlib           disable zlib [autodetect]
 329
 330   The following libraries provide various hardware acceleration features:
 331   --disable-amf            disable AMF video encoding code [autodetect]
 332   --disable-audiotoolbox   disable Apple AudioToolbox code [autodetect]
 333   --enable-cuda-nvcc       enable Nvidia CUDA compiler [no]
 334   --disable-cuda-llvm      disable CUDA compilation using clang [autodetect]
 335   --disable-cuvid          disable Nvidia CUVID support [autodetect]
 336   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
 337   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
 338   --disable-ffnvcodec      disable dynamically linked Nvidia code [autodetect]
 339   --enable-libdrm          enable DRM code (Linux) [no]
 340   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
 341   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
 342   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
 343   --disable-nvdec          disable Nvidia video decoding acceleration (via hwaccel) [autodetect]
 344   --disable-nvenc          disable Nvidia video encoding code [autodetect]
 345   --enable-omx             enable OpenMAX IL code [no]
 346   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
 347   --enable-rkmpp           enable Rockchip Media Process Platform code [no]
 348   --disable-v4l2-m2m       disable V4L2 mem2mem code [autodetect]
 349   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
 350   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
 351   --disable-videotoolbox   disable VideoToolbox code [autodetect]
 352
 353 Toolchain options:
 354   --arch=ARCH              select architecture [$arch]
 355   --cpu=CPU                select the minimum required CPU (affects
 356                            instruction selection, may crash on older CPUs)
 357   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 358   --progs-suffix=SUFFIX    program name suffix []
 359   --enable-cross-compile   assume a cross-compiler is used
 360   --sysroot=PATH           root of cross-build tree
 361   --sysinclude=PATH        location of cross-build system headers
 362   --target-os=OS           compiler targets OS [$target_os]
 363   --target-exec=CMD        command to run executables on target
 364   --target-path=DIR        path to view of build directory on target
 365   --target-samples=DIR     path to samples directory on target
 366   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 367   --toolchain=NAME         set tool defaults according to NAME
 368                            (gcc-asan, clang-asan, gcc-msan, clang-msan,
 369                            gcc-tsan, clang-tsan, gcc-usan, clang-usan,
 370                            valgrind-massif, valgrind-memcheck,
 371                            msvc, icl, gcov, llvm-cov, hardened)
 372   --nm=NM                  use nm tool NM [$nm_default]
 373   --ar=AR                  use archive tool AR [$ar_default]
 374   --as=AS                  use assembler AS [$as_default]
 375   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
 376   --strip=STRIP            use strip tool STRIP [$strip_default]
 377   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 378   --x86asmexe=EXE          use nasm-compatible assembler EXE [$x86asmexe_default]
 379   --cc=CC                  use C compiler CC [$cc_default]
 380   --cxx=CXX                use C compiler CXX [$cxx_default]
 381   --objcc=OCC              use ObjC compiler OCC [$cc_default]
 382   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 383   --nvcc=NVCC              use Nvidia CUDA compiler NVCC or clang [$nvcc_default]
 384   --ld=LD                  use linker LD [$ld_default]
 385   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 386   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 387   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 388   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
 389   --host-cc=HOSTCC         use host C compiler HOSTCC
 390   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 391   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 392   --host-ld=HOSTLD         use host linker HOSTLD
 393   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 394   --host-extralibs=HLIBS   use libs HLIBS when linking for host
 395   --host-os=OS             compiler host OS [$target_os]
 396   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 397   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 398   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
 399   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 400   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 401   --extra-ldsoflags=ELDFLAGS add ELDFLAGS to LDSOFLAGS [$LDSOFLAGS]
 402   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 403   --extra-version=STRING   version string suffix []
 404   --optflags=OPTFLAGS      override optimization-related compiler flags
 405   --nvccflags=NVCCFLAGS    override nvcc flags [$nvccflags_default]
 406   --build-suffix=SUFFIX    library name suffix []
 407   --enable-pic             build position-independent code
 408   --enable-thumb           compile for Thumb instruction set
 409   --enable-lto             use link-time optimization
 410   --env="ENV=override"     override the environment variables
 411
 412 Advanced options (experts only):
 413   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 414   --custom-allocator=NAME  use a supported custom allocator
 415   --disable-symver         disable symbol versioning
 416   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 417   --disable-safe-bitstream-reader
 418                            disable buffer boundary checking in bitreaders
 419                            (faster, but may crash)
 420   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
 421
 422 Optimization options (experts only):
 423   --disable-asm            disable all assembly optimizations
 424   --disable-altivec        disable AltiVec optimizations
 425   --disable-vsx            disable VSX optimizations
 426   --disable-power8         disable POWER8 optimizations
 427   --disable-amd3dnow       disable 3DNow! optimizations
 428   --disable-amd3dnowext    disable 3DNow! extended optimizations
 429   --disable-mmx            disable MMX optimizations
 430   --disable-mmxext         disable MMXEXT optimizations
 431   --disable-sse            disable SSE optimizations
 432   --disable-sse2           disable SSE2 optimizations
 433   --disable-sse3           disable SSE3 optimizations
 434   --disable-ssse3          disable SSSE3 optimizations
 435   --disable-sse4           disable SSE4 optimizations
 436   --disable-sse42          disable SSE4.2 optimizations
 437   --disable-avx            disable AVX optimizations
 438   --disable-xop            disable XOP optimizations
 439   --disable-fma3           disable FMA3 optimizations
 440   --disable-fma4           disable FMA4 optimizations
 441   --disable-avx2           disable AVX2 optimizations
 442   --disable-avx512         disable AVX-512 optimizations
 443   --disable-aesni          disable AESNI optimizations
 444   --disable-armv5te        disable armv5te optimizations
 445   --disable-armv6          disable armv6 optimizations
 446   --disable-armv6t2        disable armv6t2 optimizations
 447   --disable-vfp            disable VFP optimizations
 448   --disable-neon           disable NEON optimizations
 449   --disable-inline-asm     disable use of inline assembly
 450   --disable-x86asm         disable use of standalone x86 assembly
 451   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
 452   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 453   --disable-msa            disable MSA optimizations
 454   --disable-msa2           disable MSA2 optimizations
 455   --disable-mipsfpu        disable floating point MIPS optimizations
 456   --disable-mmi            disable Loongson SIMD optimizations
 457   --disable-fast-unaligned consider unaligned accesses slow
 458
 459 Developer options (useful when working on FFmpeg itself):
 460   --disable-debug          disable debugging symbols
 461   --enable-debug=LEVEL     set the debug level [$debuglevel]
 462   --disable-optimizations  disable compiler optimizations
 463   --enable-extra-warnings  enable more compiler warnings
 464   --disable-stripping      disable stripping of executables and shared libraries
 465   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 466                            2 causes a slowdown at runtime.
 467   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 468   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 469                            leaks and errors, using the specified valgrind binary.
 470                            Cannot be combined with --target-exec
 471   --enable-ftrapv          Trap arithmetic overflows
 472   --samples=PATH           location of test samples for FATE, if not set use
 473                            \$FATE_SAMPLES at make invocation time.
 474   --enable-neon-clobber-test check NEON registers for clobbering (should be
 475                            used only for debugging purposes)
 476   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 477                            should be used only for debugging purposes)
 478   --enable-random          randomly enable/disable components
 479   --disable-random
 480   --enable-random=LIST     randomly enable/disable specific components or
 481   --disable-random=LIST    component groups. LIST is a comma-separated list
 482                            of NAME[:PROB] entries where NAME is a component
 483                            (group) and PROB the probability associated with
 484                            NAME (default 0.5).
 485   --random-seed=VALUE      seed value for --enable/disable-random
 486   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 487                            (only applies to --disable-optimizations builds)
 488   --enable-ossfuzz         Enable building fuzzer tool
 489   --libfuzzer=PATH         path to libfuzzer
 490   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
 491                            in the name) of tests whose result is ignored
 492   --enable-linux-perf      enable Linux Performance Monitor API
 493   --disable-large-tests    disable tests that use a large amount of memory
 494
 495 NOTE: Object files are built at the place where configure is launched.
 496 EOF
 497   exit 0
 498 }
 499
 500 if test -t 1 && which tput >/dev/null 2>&1; then
 501     ncolors=$(tput colors)
 502     if test -n "$ncolors" && test $ncolors -ge 8; then
 503         bold_color=$(tput bold)
 504         warn_color=$(tput setaf 3)
 505         error_color=$(tput setaf 1)
 506         reset_color=$(tput sgr0)
 507     fi
 508     # 72 used instead of 80 since that's the default of pr
 509     ncols=$(tput cols)
 510 fi
 511 : ${ncols:=72}
 512
 513 log(){
 514     echo "$@" >> $logfile
 515 }
 516
 517 log_file(){
 518     log BEGIN "$1"
 519     log_file_i=1
 520     while IFS= read -r log_file_line; do
 521         printf '%5d\t%s\n' "$log_file_i" "$log_file_line"
 522         log_file_i=$(($log_file_i+1))
 523     done < "$1" >> "$logfile"
 524     log END "$1"
 525 }
 526
 527 warn(){
 528     log "WARNING: $*"
 529     WARNINGS="${WARNINGS}WARNING: $*\n"
 530 }
 531
 532 die(){
 533     log "$@"
 534     echo "$error_color$bold_color$@$reset_color"
 535     cat <<EOF
 536
 537 If you think configure made a mistake, make sure you are using the latest
 538 version from Git.  If the latest version fails, report the problem to the
 539 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 540 EOF
 541     if disabled logging; then
 542         cat <<EOF
 543 Rerun configure with logging enabled (do not use --disable-logging), and
 544 include the log this produces with your report.
 545 EOF
 546     else
 547         cat <<EOF
 548 Include the log file "$logfile" produced by configure as this will help
 549 solve the problem.
 550 EOF
 551     fi
 552     exit 1
 553 }
 554
 555 # Avoid locale weirdness, besides we really just want to translate ASCII.
 556 toupper(){
 557     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 558 }
 559
 560 tolower(){
 561     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 562 }
 563
 564 c_escape(){
 565     echo "$*" | sed 's/["\\]/\\\0/g'
 566 }
 567
 568 sh_quote(){
 569     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 570     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 571     echo "$v"
 572 }
 573
 574 cleanws(){
 575     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
 576 }
 577
 578 filter(){
 579     pat=$1
 580     shift
 581     for v; do
 582         eval "case '$v' in $pat) printf '%s ' '$v' ;; esac"
 583     done
 584 }
 585
 586 filter_out(){
 587     pat=$1
 588     shift
 589     for v; do
 590         eval "case '$v' in $pat) ;; *) printf '%s ' '$v' ;; esac"
 591     done
 592 }
 593
 594 map(){
 595     m=$1
 596     shift
 597     for v; do eval $m; done
 598 }
 599
 600 add_suffix(){
 601     suffix=$1
 602     shift
 603     for v; do echo ${v}${suffix}; done
 604 }
 605
 606 remove_suffix(){
 607     suffix=$1
 608     shift
 609     for v; do echo ${v%$suffix}; done
 610 }
 611
 612 set_all(){
 613     value=$1
 614     shift
 615     for var in $*; do
 616         eval $var=$value
 617     done
 618 }
 619
 620 set_weak(){
 621     value=$1
 622     shift
 623     for var; do
 624         eval : \${$var:=$value}
 625     done
 626 }
 627
 628 sanitize_var_name(){
 629     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 630 }
 631
 632 set_sanitized(){
 633     var=$1
 634     shift
 635     eval $(sanitize_var_name "$var")='$*'
 636 }
 637
 638 get_sanitized(){
 639     eval echo \$$(sanitize_var_name "$1")
 640 }
 641
 642 pushvar(){
 643     for pvar in $*; do
 644         eval level=\${${pvar}_level:=0}
 645         eval ${pvar}_${level}="\$$pvar"
 646         eval ${pvar}_level=$(($level+1))
 647     done
 648 }
 649
 650 popvar(){
 651     for pvar in $*; do
 652         eval level=\${${pvar}_level:-0}
 653         test $level = 0 && continue
 654         eval level=$(($level-1))
 655         eval $pvar="\${${pvar}_${level}}"
 656         eval ${pvar}_level=$level
 657         eval unset ${pvar}_${level}
 658     done
 659 }
 660
 661 request(){
 662     for var in $*; do
 663         eval ${var}_requested=yes
 664         eval $var=
 665     done
 666 }
 667
 668 warn_if_gets_disabled(){
 669     for var in $*; do
 670         WARN_IF_GETS_DISABLED_LIST="$WARN_IF_GETS_DISABLED_LIST $var"
 671     done
 672 }
 673
 674 enable(){
 675     set_all yes $*
 676 }
 677
 678 disable(){
 679     set_all no $*
 680 }
 681
 682 disable_with_reason(){
 683     disable $1
 684     eval "${1}_disable_reason=\"$2\""
 685     if requested $1; then
 686         die "ERROR: $1 requested, but $2"
 687     fi
 688 }
 689
 690 enable_weak(){
 691     set_weak yes $*
 692 }
 693
 694 disable_weak(){
 695     set_weak no $*
 696 }
 697
 698 enable_sanitized(){
 699     for var; do
 700         enable $(sanitize_var_name $var)
 701     done
 702 }
 703
 704 disable_sanitized(){
 705     for var; do
 706         disable $(sanitize_var_name $var)
 707     done
 708 }
 709
 710 do_enable_deep(){
 711     for var; do
 712         enabled $var && continue
 713         set -- $var
 714         eval enable_deep \$${var}_select
 715         var=$1
 716         eval enable_deep_weak \$${var}_suggest
 717     done
 718 }
 719
 720 enable_deep(){
 721     do_enable_deep $*
 722     enable $*
 723 }
 724
 725 enable_deep_weak(){
 726     for var; do
 727         disabled $var && continue
 728         set -- $var
 729         do_enable_deep $var
 730         var=$1
 731         enable_weak $var
 732     done
 733 }
 734
 735 requested(){
 736     test "${1#!}" = "$1" && op="=" || op="!="
 737     eval test "x\$${1#!}_requested" $op "xyes"
 738 }
 739
 740 enabled(){
 741     test "${1#!}" = "$1" && op="=" || op="!="
 742     eval test "x\$${1#!}" $op "xyes"
 743 }
 744
 745 disabled(){
 746     test "${1#!}" = "$1" && op="=" || op="!="
 747     eval test "x\$${1#!}" $op "xno"
 748 }
 749
 750 enabled_all(){
 751     for opt; do
 752         enabled $opt || return 1
 753     done
 754 }
 755
 756 disabled_all(){
 757     for opt; do
 758         disabled $opt || return 1
 759     done
 760 }
 761
 762 enabled_any(){
 763     for opt; do
 764         enabled $opt && return 0
 765     done
 766 }
 767
 768 disabled_any(){
 769     for opt; do
 770         disabled $opt && return 0
 771     done
 772     return 1
 773 }
 774
 775 set_default(){
 776     for opt; do
 777         eval : \${$opt:=\$${opt}_default}
 778     done
 779 }
 780
 781 is_in(){
 782     value=$1
 783     shift
 784     for var in $*; do
 785         [ $var = $value ] && return 0
 786     done
 787     return 1
 788 }
 789
 790 # The cfg loop is very hot (several thousands iterations), and in bash also
 791 # potentialy quite slow. Try to abort the iterations early, preferably without
 792 # calling functions. 70%+ of the time cfg is already done or without deps.
 793 check_deps(){
 794     for cfg; do
 795         eval [ x\$${cfg}_checking = xdone ] && continue
 796         eval [ x\$${cfg}_checking = xinprogress ] && die "Circular dependency for $cfg."
 797
 798         eval "
 799         dep_all=\$${cfg}_deps
 800         dep_any=\$${cfg}_deps_any
 801         dep_con=\$${cfg}_conflict
 802         dep_sel=\$${cfg}_select
 803         dep_sgs=\$${cfg}_suggest
 804         dep_ifa=\$${cfg}_if
 805         dep_ifn=\$${cfg}_if_any
 806         "
 807
 808         # most of the time here $cfg has no deps - avoid costly no-op work
 809         if [ "$dep_all$dep_any$dep_con$dep_sel$dep_sgs$dep_ifa$dep_ifn" ]; then
 810             eval ${cfg}_checking=inprogress
 811
 812             set -- $cfg "$dep_all" "$dep_any" "$dep_con" "$dep_sel" "$dep_sgs" "$dep_ifa" "$dep_ifn"
 813             check_deps $dep_all $dep_any $dep_con $dep_sel $dep_sgs $dep_ifa $dep_ifn
 814             cfg=$1; dep_all=$2; dep_any=$3; dep_con=$4; dep_sel=$5 dep_sgs=$6; dep_ifa=$7; dep_ifn=$8
 815
 816             [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 817             [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 818             enabled_all  $dep_all || { disable_with_reason $cfg "not all dependencies are satisfied: $dep_all"; }
 819             enabled_any  $dep_any || { disable_with_reason $cfg "not any dependency is satisfied: $dep_any"; }
 820             disabled_all $dep_con || { disable_with_reason $cfg "some conflicting dependencies are unsatisfied: $dep_con"; }
 821             disabled_any $dep_sel && { disable_with_reason $cfg "some selected dependency is unsatisfied: $dep_sel"; }
 822
 823             enabled $cfg && enable_deep_weak $dep_sel $dep_sgs
 824
 825             for dep in $dep_all $dep_any $dep_sel $dep_sgs; do
 826                 # filter out library deps, these do not belong in extralibs
 827                 is_in $dep $LIBRARY_LIST && continue
 828                 enabled $dep && eval append ${cfg}_extralibs ${dep}_extralibs
 829             done
 830         fi
 831
 832         eval ${cfg}_checking=done
 833     done
 834 }
 835
 836 print_config(){
 837     pfx=$1
 838     files=$2
 839     shift 2
 840     map 'eval echo "$v \${$v:-no}"' "$@" |
 841     awk "BEGIN { split(\"$files\", files) }
 842         {
 843             c = \"$pfx\" toupper(\$1);
 844             v = \$2;
 845             sub(/yes/, 1, v);
 846             sub(/no/,  0, v);
 847             for (f in files) {
 848                 file = files[f];
 849                 if (file ~ /\\.h\$/) {
 850                     printf(\"#define %s %d\\n\", c, v) >>file;
 851                 } else if (file ~ /\\.asm\$/) {
 852                     printf(\"%%define %s %d\\n\", c, v) >>file;
 853                 } else if (file ~ /\\.mak\$/) {
 854                     n = -v ? \"\" : \"!\";
 855                     printf(\"%s%s=yes\\n\", n, c) >>file;
 856                 } else if (file ~ /\\.texi\$/) {
 857                     pre = -v ? \"\" : \"@c \";
 858                     yesno = \$2;
 859                     c2 = tolower(c);
 860                     gsub(/_/, \"-\", c2);
 861                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 862                 }
 863             }
 864         }"
 865 }
 866
 867 print_enabled(){
 868     suf=$1
 869     shift
 870     for v; do
 871         enabled $v && printf "%s\n" ${v%$suf}
 872     done
 873 }
 874
 875 append(){
 876     var=$1
 877     shift
 878     eval "$var=\"\$$var $*\""
 879 }
 880
 881 prepend(){
 882     var=$1
 883     shift
 884     eval "$var=\"$* \$$var\""
 885 }
 886
 887 reverse () {
 888     eval '
 889         reverse_out=
 890         for v in $'$1'; do
 891             reverse_out="$v $reverse_out"
 892         done
 893         '$1'=$reverse_out
 894     '
 895 }
 896
 897 # keeps the last occurence of each non-unique item
 898 unique(){
 899     unique_out=
 900     eval unique_in=\$$1
 901     reverse unique_in
 902     for v in $unique_in; do
 903         # " $unique_out" +space such that every item is surrounded with spaces
 904         case " $unique_out" in *" $v "*) continue; esac  # already in list
 905         unique_out="$unique_out$v "
 906     done
 907     reverse unique_out
 908     eval $1=\$unique_out
 909 }
 910
 911 resolve(){
 912     resolve_out=
 913     eval resolve_in=\$$1
 914     for v in $resolve_in; do
 915         eval 'resolve_out="$resolve_out$'$v' "'
 916     done
 917     eval $1=\$resolve_out
 918 }
 919
 920 add_cppflags(){
 921     append CPPFLAGS "$@"
 922 }
 923
 924 add_cflags(){
 925     append CFLAGS $($cflags_filter "$@")
 926 }
 927
 928 add_cflags_headers(){
 929     append CFLAGS_HEADERS $($cflags_filter "$@")
 930 }
 931
 932 add_cxxflags(){
 933     append CXXFLAGS $($cflags_filter "$@")
 934 }
 935
 936 add_objcflags(){
 937     append OBJCFLAGS $($objcflags_filter "$@")
 938 }
 939
 940 add_asflags(){
 941     append ASFLAGS $($asflags_filter "$@")
 942 }
 943
 944 add_ldflags(){
 945     append LDFLAGS $($ldflags_filter "$@")
 946 }
 947
 948 add_ldexeflags(){
 949     append LDEXEFLAGS $($ldflags_filter "$@")
 950 }
 951
 952 add_ldsoflags(){
 953     append LDSOFLAGS $($ldflags_filter "$@")
 954 }
 955
 956 add_extralibs(){
 957     prepend extralibs $($ldflags_filter "$@")
 958 }
 959
 960 add_stripflags(){
 961     append ASMSTRIPFLAGS "$@"
 962 }
 963
 964 add_host_cppflags(){
 965     append host_cppflags "$@"
 966 }
 967
 968 add_host_cflags(){
 969     append host_cflags $($host_cflags_filter "$@")
 970 }
 971
 972 add_host_ldflags(){
 973     append host_ldflags $($host_ldflags_filter "$@")
 974 }
 975
 976 add_compat(){
 977     append compat_objs $1
 978     shift
 979     map 'add_cppflags -D$v' "$@"
 980 }
 981
 982 test_cmd(){
 983     log "$@"
 984     "$@" >> $logfile 2>&1
 985 }
 986
 987 test_stat(){
 988     log test_stat "$@"
 989     stat "$1" >> $logfile 2>&1
 990 }
 991
 992 cc_e(){
 993     eval printf '%s\\n' $CC_E
 994 }
 995
 996 cc_o(){
 997     eval printf '%s\\n' $CC_O
 998 }
 999
1000 as_o(){
1001     eval printf '%s\\n' $AS_O
1002 }
1003
1004 x86asm_o(){
1005     eval printf '%s\\n' $X86ASM_O
1006 }
1007
1008 ld_o(){
1009     eval printf '%s\\n' $LD_O
1010 }
1011
1012 hostcc_e(){
1013     eval printf '%s\\n' $HOSTCC_E
1014 }
1015
1016 hostcc_o(){
1017     eval printf '%s\\n' $HOSTCC_O
1018 }
1019
1020 nvcc_o(){
1021     eval printf '%s\\n' $NVCC_O
1022 }
1023
1024 test_cc(){
1025     log test_cc "$@"
1026     cat > $TMPC
1027     log_file $TMPC
1028     test_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
1029 }
1030
1031 test_cxx(){
1032     log test_cxx "$@"
1033     cat > $TMPCPP
1034     log_file $TMPCPP
1035     test_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
1036 }
1037
1038 test_objcc(){
1039     log test_objcc "$@"
1040     cat > $TMPM
1041     log_file $TMPM
1042     test_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
1043 }
1044
1045 test_nvcc(){
1046     log test_nvcc "$@"
1047     cat > $TMPCU
1048     log_file $TMPCU
1049     tmpcu_=$TMPCU
1050     tmpo_=$TMPO
1051     [ -x "$(command -v cygpath)" ] && tmpcu_=$(cygpath -m $tmpcu_) && tmpo_=$(cygpath -m $tmpo_)
1052     test_cmd $nvcc $nvccflags "$@" $NVCC_C $(nvcc_o $tmpo_) $tmpcu_
1053 }
1054
1055 check_nvcc() {
1056     log check_nvcc "$@"
1057     name=$1
1058     shift 1
1059     disabled $name && return
1060     disable $name
1061     test_nvcc "$@" <<EOF && enable $name
1062 extern "C" {
1063     __global__ void hello(unsigned char *data) {}
1064 }
1065 EOF
1066 }
1067
1068 test_cpp(){
1069     log test_cpp "$@"
1070     cat > $TMPC
1071     log_file $TMPC
1072     test_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
1073 }
1074
1075 test_as(){
1076     log test_as "$@"
1077     cat > $TMPS
1078     log_file $TMPS
1079     test_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
1080 }
1081
1082 test_x86asm(){
1083     log test_x86asm "$@"
1084     echo "$1" > $TMPASM
1085     log_file $TMPASM
1086     shift
1087     test_cmd $x86asmexe $X86ASMFLAGS -Werror "$@" $(x86asm_o $TMPO) $TMPASM
1088 }
1089
1090 check_cmd(){
1091     log check_cmd "$@"
1092     cmd=$1
1093     disabled $cmd && return
1094     disable $cmd
1095     test_cmd $@ && enable $cmd
1096 }
1097
1098 check_as(){
1099     log check_as "$@"
1100     name=$1
1101     code=$2
1102     shift 2
1103     disable $name
1104     test_as $@ <<EOF && enable $name
1105 $code
1106 EOF
1107 }
1108
1109 check_inline_asm(){
1110     log check_inline_asm "$@"
1111     name="$1"
1112     code="$2"
1113     shift 2
1114     disable $name
1115     test_cc "$@" <<EOF && enable $name
1116 void foo(void){ __asm__ volatile($code); }
1117 EOF
1118 }
1119
1120 check_inline_asm_flags(){
1121     log check_inline_asm_flags "$@"
1122     name="$1"
1123     code="$2"
1124     flags=''
1125     shift 2
1126     while [ "$1" != "" ]; do
1127       append flags $1
1128       shift
1129     done;
1130     disable $name
1131     cat > $TMPC <<EOF
1132 void foo(void){ __asm__ volatile($code); }
1133 EOF
1134     log_file $TMPC
1135     test_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
1136     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
1137 }
1138
1139 check_insn(){
1140     log check_insn "$@"
1141     check_inline_asm ${1}_inline "\"$2\""
1142     check_as ${1}_external "$2"
1143 }
1144
1145 check_x86asm(){
1146     log check_x86asm "$@"
1147     name=$1
1148     shift
1149     disable $name
1150     test_x86asm "$@" && enable $name
1151 }
1152
1153 test_ld(){
1154     log test_ld "$@"
1155     type=$1
1156     shift 1
1157     flags=$(filter_out '-l*|*.so' $@)
1158     libs=$(filter '-l*|*.so' $@)
1159     test_$type $($cflags_filter $flags) || return
1160     flags=$($ldflags_filter $flags)
1161     libs=$($ldflags_filter $libs)
1162     test_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
1163 }
1164
1165 check_ld(){
1166     log check_ld "$@"
1167     type=$1
1168     name=$2
1169     shift 2
1170     disable $name
1171     test_ld $type $@ && enable $name
1172 }
1173
1174 print_include(){
1175     hdr=$1
1176     test "${hdr%.h}" = "${hdr}" &&
1177         echo "#include $hdr"    ||
1178         echo "#include <$hdr>"
1179 }
1180
1181 test_code(){
1182     log test_code "$@"
1183     check=$1
1184     headers=$2
1185     code=$3
1186     shift 3
1187     {
1188         for hdr in $headers; do
1189             print_include $hdr
1190         done
1191         echo "int main(void) { $code; return 0; }"
1192     } | test_$check "$@"
1193 }
1194
1195 check_cppflags(){
1196     log check_cppflags "$@"
1197     test_cpp "$@" <<EOF && append CPPFLAGS "$@"
1198 #include <stdlib.h>
1199 EOF
1200 }
1201
1202 test_cflags(){
1203     log test_cflags "$@"
1204     set -- $($cflags_filter "$@")
1205     test_cc "$@" <<EOF
1206 int x;
1207 EOF
1208 }
1209
1210 check_cflags(){
1211     log check_cflags "$@"
1212     test_cflags "$@" && add_cflags "$@"
1213 }
1214
1215 check_cxxflags(){
1216     log check_cxxflags "$@"
1217     set -- $($cflags_filter "$@")
1218     test_cxx "$@" <<EOF && append CXXFLAGS "$@"
1219 int x;
1220 EOF
1221 }
1222
1223 test_objcflags(){
1224     log test_objcflags "$@"
1225     set -- $($objcflags_filter "$@")
1226     test_objcc "$@" <<EOF
1227 int x;
1228 EOF
1229 }
1230
1231 check_objcflags(){
1232     log check_objcflags "$@"
1233     test_objcflags "$@" && add_objcflags "$@"
1234 }
1235
1236 test_ldflags(){
1237     log test_ldflags "$@"
1238     set -- $($ldflags_filter "$@")
1239     test_ld "cc" "$@" <<EOF
1240 int main(void){ return 0; }
1241 EOF
1242 }
1243
1244 check_ldflags(){
1245     log check_ldflags "$@"
1246     test_ldflags "$@" && add_ldflags "$@"
1247 }
1248
1249 test_stripflags(){
1250     log test_stripflags "$@"
1251     # call test_cc to get a fresh TMPO
1252     test_cc <<EOF
1253 int main(void) { return 0; }
1254 EOF
1255     test_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1256 }
1257
1258 check_stripflags(){
1259     log check_stripflags "$@"
1260     test_stripflags "$@" && add_stripflags "$@"
1261 }
1262
1263 check_headers(){
1264     log check_headers "$@"
1265     headers=$1
1266     shift
1267     disable_sanitized $headers
1268     {
1269         for hdr in $headers; do
1270             print_include $hdr
1271         done
1272         echo "int x;"
1273     } | test_cpp "$@" && enable_sanitized $headers
1274 }
1275
1276 check_header_objcc(){
1277     log check_header_objcc "$@"
1278     rm -f -- "$TMPO"
1279     header=$1
1280     shift
1281     disable_sanitized $header
1282     {
1283        echo "#include <$header>"
1284        echo "int main(void) { return 0; }"
1285     } | test_objcc && test_stat "$TMPO" && enable_sanitized $header
1286 }
1287
1288 check_apple_framework(){
1289     log check_apple_framework "$@"
1290     framework="$1"
1291     name="$(tolower $framework)"
1292     header="${framework}/${framework}.h"
1293     disable $name
1294     check_header_objcc $header &&
1295         enable $name && eval ${name}_extralibs='"-framework $framework"'
1296 }
1297
1298 check_func(){
1299     log check_func "$@"
1300     func=$1
1301     shift
1302     disable $func
1303     test_ld "cc" "$@" <<EOF && enable $func
1304 extern int $func();
1305 int main(void){ $func(); }
1306 EOF
1307 }
1308
1309 check_complexfunc(){
1310     log check_complexfunc "$@"
1311     func=$1
1312     narg=$2
1313     shift 2
1314     test $narg = 2 && args="f, g" || args="f * I"
1315     disable $func
1316     test_ld "cc" "$@" <<EOF && enable $func
1317 #include <complex.h>
1318 #include <math.h>
1319 float foo(complex float f, complex float g) { return $func($args); }
1320 int main(void){ return (int) foo; }
1321 EOF
1322 }
1323
1324 check_mathfunc(){
1325     log check_mathfunc "$@"
1326     func=$1
1327     narg=$2
1328     shift 2
1329     test $narg = 2 && args="f, g" || args="f"
1330     disable $func
1331     test_ld "cc" "$@" <<EOF && enable $func
1332 #include <math.h>
1333 float foo(float f, float g) { return $func($args); }
1334 int main(void){ return (int) foo; }
1335 EOF
1336 }
1337
1338 check_func_headers(){
1339     log check_func_headers "$@"
1340     headers=$1
1341     funcs=$2
1342     shift 2
1343     {
1344         for hdr in $headers; do
1345             print_include $hdr
1346         done
1347         echo "#include <stdint.h>"
1348         for func in $funcs; do
1349             echo "long check_$func(void) { return (long) $func; }"
1350         done
1351         echo "int main(void) { int ret = 0;"
1352         # LTO could optimize out the test functions without this
1353         for func in $funcs; do
1354             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1355         done
1356         echo "return ret; }"
1357     } | test_ld "cc" "$@" && enable $funcs && enable_sanitized $headers
1358 }
1359
1360 check_class_headers_cpp(){
1361     log check_class_headers_cpp "$@"
1362     headers=$1
1363     classes=$2
1364     shift 2
1365     {
1366         for hdr in $headers; do
1367             echo "#include <$hdr>"
1368         done
1369         echo "int main(void) { "
1370         i=1
1371         for class in $classes; do
1372             echo "$class obj$i;"
1373             i=$(expr $i + 1)
1374         done
1375         echo "return 0; }"
1376     } | test_ld "cxx" "$@" && enable $funcs && enable_sanitized $headers
1377 }
1378
1379 test_cpp_condition(){
1380     log test_cpp_condition "$@"
1381     header=$1
1382     condition=$2
1383     shift 2
1384     test_cpp "$@" <<EOF
1385 #include <$header>
1386 #if !($condition)
1387 #error "unsatisfied condition: $condition"
1388 #endif
1389 EOF
1390 }
1391
1392 check_cpp_condition(){
1393     log check_cpp_condition "$@"
1394     name=$1
1395     shift 1
1396     disable $name
1397     test_cpp_condition "$@" && enable $name
1398 }
1399
1400 test_cflags_cc(){
1401     log test_cflags_cc "$@"
1402     flags=$1
1403     header=$2
1404     condition=$3
1405     shift 3
1406     set -- $($cflags_filter "$flags")
1407     test_cc "$@" <<EOF
1408 #include <$header>
1409 #if !($condition)
1410 #error "unsatisfied condition: $condition"
1411 #endif
1412 EOF
1413 }
1414
1415 check_lib(){
1416     log check_lib "$@"
1417     name="$1"
1418     headers="$2"
1419     funcs="$3"
1420     shift 3
1421     disable $name
1422     check_func_headers "$headers" "$funcs" "$@" &&
1423         enable $name && eval ${name}_extralibs="\$@"
1424 }
1425
1426 check_lib_cpp(){
1427     log check_lib_cpp "$@"
1428     name="$1"
1429     headers="$2"
1430     classes="$3"
1431     shift 3
1432     disable $name
1433     check_class_headers_cpp "$headers" "$classes" "$@" &&
1434         enable $name && eval ${name}_extralibs="\$@"
1435 }
1436
1437 test_pkg_config(){
1438     log test_pkg_config "$@"
1439     name="$1"
1440     pkg_version="$2"
1441     pkg="${2%% *}"
1442     headers="$3"
1443     funcs="$4"
1444     shift 4
1445     disable $name
1446     test_cmd $pkg_config --exists --print-errors $pkg_version || return
1447     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1448     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1449     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1450         enable $name &&
1451         set_sanitized "${name}_cflags"    $pkg_cflags &&
1452         set_sanitized "${name}_extralibs" $pkg_libs
1453 }
1454
1455 check_pkg_config(){
1456     log check_pkg_config "$@"
1457     name="$1"
1458     test_pkg_config "$@" &&
1459         eval add_cflags \$${name}_cflags
1460 }
1461
1462 test_exec(){
1463     test_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1464 }
1465
1466 check_exec_crash(){
1467     log check_exec_crash "$@"
1468     code=$(cat)
1469
1470     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1471     # are safe but may not be available everywhere.  Thus we use
1472     # raise(SIGTERM) instead.  The check is run in a subshell so we
1473     # can redirect the "Terminated" message from the shell.  SIGBUS
1474     # is not defined by standard C so it is used conditionally.
1475
1476     (test_exec "$@") >> $logfile 2>&1 <<EOF
1477 #include <signal.h>
1478 static void sighandler(int sig){
1479     raise(SIGTERM);
1480 }
1481 int foo(void){
1482     $code
1483 }
1484 int (*func_ptr)(void) = foo;
1485 int main(void){
1486     signal(SIGILL, sighandler);
1487     signal(SIGFPE, sighandler);
1488     signal(SIGSEGV, sighandler);
1489 #ifdef SIGBUS
1490     signal(SIGBUS, sighandler);
1491 #endif
1492     return func_ptr();
1493 }
1494 EOF
1495 }
1496
1497 check_type(){
1498     log check_type "$@"
1499     headers=$1
1500     type=$2
1501     shift 2
1502     disable_sanitized "$type"
1503     test_code cc "$headers" "$type v" "$@" && enable_sanitized "$type"
1504 }
1505
1506 check_struct(){
1507     log check_struct "$@"
1508     headers=$1
1509     struct=$2
1510     member=$3
1511     shift 3
1512     disable_sanitized "${struct}_${member}"
1513     test_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1514         enable_sanitized "${struct}_${member}"
1515 }
1516
1517 check_builtin(){
1518     log check_builtin "$@"
1519     name=$1
1520     headers=$2
1521     builtin=$3
1522     shift 3
1523     disable "$name"
1524     test_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1525 }
1526
1527 check_compile_assert(){
1528     log check_compile_assert "$@"
1529     name=$1
1530     headers=$2
1531     condition=$3
1532     shift 3
1533     disable "$name"
1534     test_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1535 }
1536
1537 check_cc(){
1538     log check_cc "$@"
1539     name=$1
1540     shift
1541     disable "$name"
1542     test_code cc "$@" && enable "$name"
1543 }
1544
1545 require(){
1546     log require "$@"
1547     name_version="$1"
1548     name="${1%% *}"
1549     shift
1550     check_lib $name "$@" || die "ERROR: $name_version not found"
1551 }
1552
1553 require_cc(){
1554     log require_cc "$@"
1555     name="$1"
1556     check_cc "$@" || die "ERROR: $name failed"
1557 }
1558
1559 require_cpp(){
1560     log require_cpp "$@"
1561     name_version="$1"
1562     name="${1%% *}"
1563     shift
1564     check_lib_cpp "$name" "$@" || die "ERROR: $name_version not found"
1565 }
1566
1567 require_headers(){
1568     log require_headers "$@"
1569     headers="$1"
1570     check_headers "$@" || die "ERROR: $headers not found"
1571 }
1572
1573 require_cpp_condition(){
1574     log require_cpp_condition "$@"
1575     condition="$3"
1576     check_cpp_condition "$@" || die "ERROR: $condition not satisfied"
1577 }
1578
1579 require_pkg_config(){
1580     log require_pkg_config "$@"
1581     pkg_version="$2"
1582     check_pkg_config "$@" || die "ERROR: $pkg_version not found using pkg-config$pkg_config_fail_message"
1583 }
1584
1585 test_host_cc(){
1586     log test_host_cc "$@"
1587     cat > $TMPC
1588     log_file $TMPC
1589     test_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1590 }
1591
1592 test_host_cpp(){
1593     log test_host_cpp "$@"
1594     cat > $TMPC
1595     log_file $TMPC
1596     test_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1597 }
1598
1599 check_host_cppflags(){
1600     log check_host_cppflags "$@"
1601     test_host_cpp "$@" <<EOF && append host_cppflags "$@"
1602 #include <stdlib.h>
1603 EOF
1604 }
1605
1606 check_host_cflags(){
1607     log check_host_cflags "$@"
1608     set -- $($host_cflags_filter "$@")
1609     test_host_cc "$@" <<EOF && append host_cflags "$@"
1610 int x;
1611 EOF
1612 }
1613
1614 test_host_cpp_condition(){
1615     log test_host_cpp_condition "$@"
1616     header=$1
1617     condition=$2
1618     shift 2
1619     test_host_cpp "$@" <<EOF
1620 #include <$header>
1621 #if !($condition)
1622 #error "unsatisfied condition: $condition"
1623 #endif
1624 EOF
1625 }
1626
1627 check_host_cpp_condition(){
1628     log check_host_cpp_condition "$@"
1629     name=$1
1630     shift 1
1631     disable $name
1632     test_host_cpp_condition "$@" && enable $name
1633 }
1634
1635 cp_if_changed(){
1636     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1637     mkdir -p "$(dirname $2)"
1638     cp -f "$1" "$2"
1639 }
1640
1641 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1642 # system-dependent things.
1643
1644 AVCODEC_COMPONENTS="
1645     bsfs
1646     decoders
1647     encoders
1648     hwaccels
1649     parsers
1650 "
1651
1652 AVDEVICE_COMPONENTS="
1653     indevs
1654     outdevs
1655 "
1656
1657 AVFILTER_COMPONENTS="
1658     filters
1659 "
1660
1661 AVFORMAT_COMPONENTS="
1662     demuxers
1663     muxers
1664     protocols
1665 "
1666
1667 COMPONENT_LIST="
1668     $AVCODEC_COMPONENTS
1669     $AVDEVICE_COMPONENTS
1670     $AVFILTER_COMPONENTS
1671     $AVFORMAT_COMPONENTS
1672 "
1673
1674 EXAMPLE_LIST="
1675     avio_list_dir_example
1676     avio_reading_example
1677     decode_audio_example
1678     decode_video_example
1679     demuxing_decoding_example
1680     encode_audio_example
1681     encode_video_example
1682     extract_mvs_example
1683     filter_audio_example
1684     filtering_audio_example
1685     filtering_video_example
1686     http_multiclient_example
1687     hw_decode_example
1688     metadata_example
1689     muxing_example
1690     qsvdec_example
1691     remuxing_example
1692     resampling_audio_example
1693     scaling_video_example
1694     transcode_aac_example
1695     transcoding_example
1696     vaapi_encode_example
1697     vaapi_transcode_example
1698 "
1699
1700 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1701     alsa
1702     appkit
1703     avfoundation
1704     bzlib
1705     coreimage
1706     iconv
1707     libxcb
1708     libxcb_shm
1709     libxcb_shape
1710     libxcb_xfixes
1711     lzma
1712     mediafoundation
1713     schannel
1714     sdl2
1715     securetransport
1716     sndio
1717     xlib
1718     zlib
1719 "
1720
1721 EXTERNAL_LIBRARY_GPL_LIST="
1722     avisynth
1723     frei0r
1724     libcdio
1725     libdavs2
1726     librubberband
1727     libvidstab
1728     libx264
1729     libx265
1730     libxavs
1731     libxavs2
1732     libxvid
1733 "
1734
1735 EXTERNAL_LIBRARY_NONFREE_LIST="
1736     decklink
1737     libfdk_aac
1738     openssl
1739     libtls
1740 "
1741
1742 EXTERNAL_LIBRARY_VERSION3_LIST="
1743     gmp
1744     libaribb24
1745     liblensfun
1746     libopencore_amrnb
1747     libopencore_amrwb
1748     libvo_amrwbenc
1749     mbedtls
1750     rkmpp
1751 "
1752
1753 EXTERNAL_LIBRARY_GPLV3_LIST="
1754     libsmbclient
1755 "
1756
1757 EXTERNAL_LIBRARY_LIST="
1758     $EXTERNAL_LIBRARY_GPL_LIST
1759     $EXTERNAL_LIBRARY_NONFREE_LIST
1760     $EXTERNAL_LIBRARY_VERSION3_LIST
1761     $EXTERNAL_LIBRARY_GPLV3_LIST
1762     chromaprint
1763     gcrypt
1764     gnutls
1765     jni
1766     ladspa
1767     libaom
1768     libass
1769     libbluray
1770     libbs2b
1771     libcaca
1772     libcelt
1773     libcodec2
1774     libdav1d
1775     libdc1394
1776     libdrm
1777     libflite
1778     libfontconfig
1779     libfreetype
1780     libfribidi
1781     libglslang
1782     libgme
1783     libgsm
1784     libiec61883
1785     libilbc
1786     libjack
1787     libklvanc
1788     libkvazaar
1789     libmodplug
1790     libmp3lame
1791     libmysofa
1792     libopencv
1793     libopenh264
1794     libopenjpeg
1795     libopenmpt
1796     libopenvino
1797     libopus
1798     libpulse
1799     librabbitmq
1800     librav1e
1801     librist
1802     librsvg
1803     librtmp
1804     libshine
1805     libsmbclient
1806     libsnappy
1807     libsoxr
1808     libspeex
1809     libsrt
1810     libssh
1811     libsvtav1
1812     libtensorflow
1813     libtesseract
1814     libtheora
1815     libtwolame
1816     libuavs3d
1817     libv4l2
1818     libvmaf
1819     libvorbis
1820     libvpx
1821     libwebp
1822     libxml2
1823     libzimg
1824     libzmq
1825     libzvbi
1826     lv2
1827     mediacodec
1828     openal
1829     opengl
1830     pocketsphinx
1831     vapoursynth
1832 "
1833
1834 HWACCEL_AUTODETECT_LIBRARY_LIST="
1835     amf
1836     audiotoolbox
1837     crystalhd
1838     cuda
1839     cuda_llvm
1840     cuvid
1841     d3d11va
1842     dxva2
1843     ffnvcodec
1844     nvdec
1845     nvenc
1846     vaapi
1847     vdpau
1848     videotoolbox
1849     v4l2_m2m
1850     xvmc
1851 "
1852
1853 # catchall list of things that require external libs to link
1854 EXTRALIBS_LIST="
1855     cpu_init
1856     cws2fws
1857 "
1858
1859 HWACCEL_LIBRARY_NONFREE_LIST="
1860     cuda_nvcc
1861     cuda_sdk
1862     libnpp
1863 "
1864
1865 HWACCEL_LIBRARY_LIST="
1866     $HWACCEL_LIBRARY_NONFREE_LIST
1867     libmfx
1868     mmal
1869     omx
1870     opencl
1871     vulkan
1872 "
1873
1874 DOCUMENT_LIST="
1875     doc
1876     htmlpages
1877     manpages
1878     podpages
1879     txtpages
1880 "
1881
1882 FEATURE_LIST="
1883     ftrapv
1884     gray
1885     hardcoded_tables
1886     omx_rpi
1887     runtime_cpudetect
1888     safe_bitstream_reader
1889     shared
1890     small
1891     static
1892     swscale_alpha
1893 "
1894
1895 # this list should be kept in linking order
1896 LIBRARY_LIST="
1897     avdevice
1898     avfilter
1899     swscale
1900     postproc
1901     avformat
1902     avcodec
1903     swresample
1904     avresample
1905     avutil
1906 "
1907
1908 LICENSE_LIST="
1909     gpl
1910     nonfree
1911     version3
1912 "
1913
1914 PROGRAM_LIST="
1915     ffplay
1916     ffprobe
1917     ffmpeg
1918 "
1919
1920 SUBSYSTEM_LIST="
1921     dct
1922     dwt
1923     error_resilience
1924     faan
1925     fast_unaligned
1926     fft
1927     lsp
1928     lzo
1929     mdct
1930     pixelutils
1931     network
1932     rdft
1933 "
1934
1935 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1936 CONFIG_LIST="
1937     $DOCUMENT_LIST
1938     $EXAMPLE_LIST
1939     $EXTERNAL_LIBRARY_LIST
1940     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1941     $HWACCEL_LIBRARY_LIST
1942     $HWACCEL_AUTODETECT_LIBRARY_LIST
1943     $FEATURE_LIST
1944     $LICENSE_LIST
1945     $LIBRARY_LIST
1946     $PROGRAM_LIST
1947     $SUBSYSTEM_LIST
1948     autodetect
1949     fontconfig
1950     large_tests
1951     linux_perf
1952     memory_poisoning
1953     neon_clobber_test
1954     ossfuzz
1955     pic
1956     thumb
1957     valgrind_backtrace
1958     xmm_clobber_test
1959     $COMPONENT_LIST
1960 "
1961
1962 THREADS_LIST="
1963     pthreads
1964     os2threads
1965     w32threads
1966 "
1967
1968 ATOMICS_LIST="
1969     atomics_gcc
1970     atomics_suncc
1971     atomics_win32
1972 "
1973
1974 AUTODETECT_LIBS="
1975     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1976     $HWACCEL_AUTODETECT_LIBRARY_LIST
1977     $THREADS_LIST
1978 "
1979
1980 ARCH_LIST="
1981     aarch64
1982     alpha
1983     arm
1984     avr32
1985     avr32_ap
1986     avr32_uc
1987     bfin
1988     ia64
1989     m68k
1990     mips
1991     mips64
1992     parisc
1993     ppc
1994     ppc64
1995     s390
1996     sh4
1997     sparc
1998     sparc64
1999     tilegx
2000     tilepro
2001     tomi
2002     x86
2003     x86_32
2004     x86_64
2005 "
2006
2007 ARCH_EXT_LIST_ARM="
2008     armv5te
2009     armv6
2010     armv6t2
2011     armv8
2012     neon
2013     vfp
2014     vfpv3
2015     setend
2016 "
2017
2018 ARCH_EXT_LIST_MIPS="
2019     mipsfpu
2020     mips32r2
2021     mips32r5
2022     mips64r2
2023     mips32r6
2024     mips64r6
2025     mipsdsp
2026     mipsdspr2
2027     msa
2028     msa2
2029 "
2030
2031 ARCH_EXT_LIST_LOONGSON="
2032     loongson2
2033     loongson3
2034     mmi
2035 "
2036
2037 ARCH_EXT_LIST_X86_SIMD="
2038     aesni
2039     amd3dnow
2040     amd3dnowext
2041     avx
2042     avx2
2043     avx512
2044     fma3
2045     fma4
2046     mmx
2047     mmxext
2048     sse
2049     sse2
2050     sse3
2051     sse4
2052     sse42
2053     ssse3
2054     xop
2055 "
2056
2057 ARCH_EXT_LIST_PPC="
2058     altivec
2059     dcbzl
2060     ldbrx
2061     power8
2062     ppc4xx
2063     vsx
2064 "
2065
2066 ARCH_EXT_LIST_X86="
2067     $ARCH_EXT_LIST_X86_SIMD
2068     cpunop
2069     i686
2070 "
2071
2072 ARCH_EXT_LIST="
2073     $ARCH_EXT_LIST_ARM
2074     $ARCH_EXT_LIST_PPC
2075     $ARCH_EXT_LIST_X86
2076     $ARCH_EXT_LIST_MIPS
2077     $ARCH_EXT_LIST_LOONGSON
2078 "
2079
2080 ARCH_FEATURES="
2081     aligned_stack
2082     fast_64bit
2083     fast_clz
2084     fast_cmov
2085     local_aligned
2086     simd_align_16
2087     simd_align_32
2088     simd_align_64
2089 "
2090
2091 BUILTIN_LIST="
2092     atomic_cas_ptr
2093     machine_rw_barrier
2094     MemoryBarrier
2095     mm_empty
2096     rdtsc
2097     sem_timedwait
2098     sync_val_compare_and_swap
2099 "
2100 HAVE_LIST_CMDLINE="
2101     inline_asm
2102     symver
2103     x86asm
2104 "
2105
2106 HAVE_LIST_PUB="
2107     bigendian
2108     fast_unaligned
2109 "
2110
2111 HEADERS_LIST="
2112     arpa_inet_h
2113     asm_types_h
2114     cdio_paranoia_h
2115     cdio_paranoia_paranoia_h
2116     cuda_h
2117     dispatch_dispatch_h
2118     dev_bktr_ioctl_bt848_h
2119     dev_bktr_ioctl_meteor_h
2120     dev_ic_bt8xx_h
2121     dev_video_bktr_ioctl_bt848_h
2122     dev_video_meteor_ioctl_meteor_h
2123     direct_h
2124     dirent_h
2125     dxgidebug_h
2126     dxva_h
2127     ES2_gl_h
2128     gsm_h
2129     io_h
2130     linux_dma_buf_h
2131     linux_perf_event_h
2132     machine_ioctl_bt848_h
2133     machine_ioctl_meteor_h
2134     malloc_h
2135     opencv2_core_core_c_h
2136     OpenGL_gl3_h
2137     poll_h
2138     sys_param_h
2139     sys_resource_h
2140     sys_select_h
2141     sys_soundcard_h
2142     sys_time_h
2143     sys_un_h
2144     sys_videoio_h
2145     termios_h
2146     udplite_h
2147     unistd_h
2148     valgrind_valgrind_h
2149     windows_h
2150     winsock2_h
2151 "
2152
2153 INTRINSICS_LIST="
2154     intrinsics_neon
2155 "
2156
2157 COMPLEX_FUNCS="
2158     cabs
2159     cexp
2160 "
2161
2162 MATH_FUNCS="
2163     atanf
2164     atan2f
2165     cbrt
2166     cbrtf
2167     copysign
2168     cosf
2169     erf
2170     exp2
2171     exp2f
2172     expf
2173     hypot
2174     isfinite
2175     isinf
2176     isnan
2177     ldexpf
2178     llrint
2179     llrintf
2180     log2
2181     log2f
2182     log10f
2183     lrint
2184     lrintf
2185     powf
2186     rint
2187     round
2188     roundf
2189     sinf
2190     trunc
2191     truncf
2192 "
2193
2194 SYSTEM_FEATURES="
2195     dos_paths
2196     libc_msvcrt
2197     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2198     section_data_rel_ro
2199     threads
2200     uwp
2201     winrt
2202 "
2203
2204 SYSTEM_FUNCS="
2205     access
2206     aligned_malloc
2207     arc4random
2208     clock_gettime
2209     closesocket
2210     CommandLineToArgvW
2211     fcntl
2212     getaddrinfo
2213     gethrtime
2214     getopt
2215     GetModuleHandle
2216     GetProcessAffinityMask
2217     GetProcessMemoryInfo
2218     GetProcessTimes
2219     getrusage
2220     GetStdHandle
2221     GetSystemTimeAsFileTime
2222     gettimeofday
2223     glob
2224     glXGetProcAddress
2225     gmtime_r
2226     inet_aton
2227     isatty
2228     kbhit
2229     localtime_r
2230     lstat
2231     lzo1x_999_compress
2232     mach_absolute_time
2233     MapViewOfFile
2234     memalign
2235     mkstemp
2236     mmap
2237     mprotect
2238     nanosleep
2239     PeekNamedPipe
2240     posix_memalign
2241     pthread_cancel
2242     sched_getaffinity
2243     SecItemImport
2244     SetConsoleTextAttribute
2245     SetConsoleCtrlHandler
2246     SetDllDirectory
2247     setmode
2248     setrlimit
2249     Sleep
2250     strerror_r
2251     sysconf
2252     sysctl
2253     usleep
2254     UTGetOSTypeFromString
2255     VirtualAlloc
2256     wglGetProcAddress
2257 "
2258
2259 SYSTEM_LIBRARIES="
2260     bcrypt
2261     vaapi_drm
2262     vaapi_x11
2263     vdpau_x11
2264 "
2265
2266 TOOLCHAIN_FEATURES="
2267     as_arch_directive
2268     as_dn_directive
2269     as_fpu_directive
2270     as_func
2271     as_object_arch
2272     asm_mod_q
2273     blocks_extension
2274     ebp_available
2275     ebx_available
2276     gnu_as
2277     gnu_windres
2278     ibm_asm
2279     inline_asm_direct_symbol_refs
2280     inline_asm_labels
2281     inline_asm_nonlocal_labels
2282     pragma_deprecated
2283     rsync_contimeout
2284     symver_asm_label
2285     symver_gnu_asm
2286     vfp_args
2287     xform_asm
2288     xmm_clobbers
2289 "
2290
2291 TYPES_LIST="
2292     kCMVideoCodecType_HEVC
2293     kCMVideoCodecType_HEVCWithAlpha
2294     kCVPixelFormatType_420YpCbCr10BiPlanarVideoRange
2295     kCVImageBufferTransferFunction_SMPTE_ST_2084_PQ
2296     kCVImageBufferTransferFunction_ITU_R_2100_HLG
2297     kCVImageBufferTransferFunction_Linear
2298     socklen_t
2299     struct_addrinfo
2300     struct_group_source_req
2301     struct_ip_mreq_source
2302     struct_ipv6_mreq
2303     struct_msghdr_msg_flags
2304     struct_pollfd
2305     struct_rusage_ru_maxrss
2306     struct_sctp_event_subscribe
2307     struct_sockaddr_in6
2308     struct_sockaddr_sa_len
2309     struct_sockaddr_storage
2310     struct_stat_st_mtim_tv_nsec
2311     struct_v4l2_frmivalenum_discrete
2312 "
2313
2314 HAVE_LIST="
2315     $ARCH_EXT_LIST
2316     $(add_suffix _external $ARCH_EXT_LIST)
2317     $(add_suffix _inline   $ARCH_EXT_LIST)
2318     $ARCH_FEATURES
2319     $BUILTIN_LIST
2320     $COMPLEX_FUNCS
2321     $HAVE_LIST_CMDLINE
2322     $HAVE_LIST_PUB
2323     $HEADERS_LIST
2324     $INTRINSICS_LIST
2325     $MATH_FUNCS
2326     $SYSTEM_FEATURES
2327     $SYSTEM_FUNCS
2328     $SYSTEM_LIBRARIES
2329     $THREADS_LIST
2330     $TOOLCHAIN_FEATURES
2331     $TYPES_LIST
2332     libdrm_getfb2
2333     makeinfo
2334     makeinfo_html
2335     opencl_d3d11
2336     opencl_drm_arm
2337     opencl_drm_beignet
2338     opencl_dxva2
2339     opencl_vaapi_beignet
2340     opencl_vaapi_intel_media
2341     perl
2342     pod2man
2343     texi2html
2344 "
2345
2346 # options emitted with CONFIG_ prefix but not available on the command line
2347 CONFIG_EXTRA="
2348     aandcttables
2349     ac3dsp
2350     adts_header
2351     atsc_a53
2352     audio_frame_queue
2353     audiodsp
2354     blockdsp
2355     bswapdsp
2356     cabac
2357     cbs
2358     cbs_av1
2359     cbs_h264
2360     cbs_h265
2361     cbs_jpeg
2362     cbs_mpeg2
2363     cbs_vp9
2364     dirac_parse
2365     dnn
2366     dvprofile
2367     exif
2368     faandct
2369     faanidct
2370     fdctdsp
2371     flacdsp
2372     fmtconvert
2373     frame_thread_encoder
2374     g722dsp
2375     golomb
2376     gplv3
2377     h263dsp
2378     h264chroma
2379     h264dsp
2380     h264parse
2381     h264pred
2382     h264qpel
2383     hevcparse
2384     hpeldsp
2385     huffman
2386     huffyuvdsp
2387     huffyuvencdsp
2388     idctdsp
2389     iirfilter
2390     mdct15
2391     intrax8
2392     iso_media
2393     ividsp
2394     jpegtables
2395     lgplv3
2396     libx262
2397     llauddsp
2398     llviddsp
2399     llvidencdsp
2400     lpc
2401     lzf
2402     me_cmp
2403     mpeg_er
2404     mpegaudio
2405     mpegaudiodsp
2406     mpegaudioheader
2407     mpegvideo
2408     mpegvideoenc
2409     mss34dsp
2410     pixblockdsp
2411     qpeldsp
2412     qsv
2413     qsvdec
2414     qsvenc
2415     qsvvpp
2416     rangecoder
2417     riffdec
2418     riffenc
2419     rtpdec
2420     rtpenc_chain
2421     rv34dsp
2422     scene_sad
2423     sinewin
2424     snappy
2425     srtp
2426     startcode
2427     texturedsp
2428     texturedspenc
2429     tpeldsp
2430     vaapi_1
2431     vaapi_encode
2432     vc1dsp
2433     videodsp
2434     vp3dsp
2435     vp56dsp
2436     vp8dsp
2437     wma_freqs
2438     wmv2dsp
2439 "
2440
2441 CMDLINE_SELECT="
2442     $ARCH_EXT_LIST
2443     $CONFIG_LIST
2444     $HAVE_LIST_CMDLINE
2445     $THREADS_LIST
2446     asm
2447     cross_compile
2448     debug
2449     extra_warnings
2450     logging
2451     lto
2452     optimizations
2453     rpath
2454     stripping
2455 "
2456
2457 PATHS_LIST="
2458     bindir
2459     datadir
2460     docdir
2461     incdir
2462     libdir
2463     mandir
2464     pkgconfigdir
2465     prefix
2466     shlibdir
2467     install_name_dir
2468 "
2469
2470 CMDLINE_SET="
2471     $PATHS_LIST
2472     ar
2473     arch
2474     as
2475     assert_level
2476     build_suffix
2477     cc
2478     objcc
2479     cpu
2480     cross_prefix
2481     custom_allocator
2482     cxx
2483     dep_cc
2484     doxygen
2485     env
2486     extra_version
2487     gas
2488     host_cc
2489     host_cflags
2490     host_extralibs
2491     host_ld
2492     host_ldflags
2493     host_os
2494     ignore_tests
2495     install
2496     ld
2497     ln_s
2498     logfile
2499     malloc_prefix
2500     nm
2501     optflags
2502     nvcc
2503     nvccflags
2504     pkg_config
2505     pkg_config_flags
2506     progs_suffix
2507     random_seed
2508     ranlib
2509     samples
2510     strip
2511     sws_max_filter_size
2512     sysinclude
2513     sysroot
2514     target_exec
2515     target_os
2516     target_path
2517     target_samples
2518     tempprefix
2519     toolchain
2520     valgrind
2521     windres
2522     x86asmexe
2523 "
2524
2525 CMDLINE_APPEND="
2526     extra_cflags
2527     extra_cxxflags
2528     extra_objcflags
2529     host_cppflags
2530 "
2531
2532 # code dependency declarations
2533
2534 # architecture extensions
2535
2536 armv5te_deps="arm"
2537 armv6_deps="arm"
2538 armv6t2_deps="arm"
2539 armv8_deps="aarch64"
2540 neon_deps_any="aarch64 arm"
2541 intrinsics_neon_deps="neon"
2542 vfp_deps_any="aarch64 arm"
2543 vfpv3_deps="vfp"
2544 setend_deps="arm"
2545
2546 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2547
2548 altivec_deps="ppc"
2549 dcbzl_deps="ppc"
2550 ldbrx_deps="ppc"
2551 ppc4xx_deps="ppc"
2552 vsx_deps="altivec"
2553 power8_deps="vsx"
2554
2555 loongson2_deps="mips"
2556 loongson3_deps="mips"
2557 mips32r2_deps="mips"
2558 mips32r5_deps="mips"
2559 mips32r6_deps="mips"
2560 mips64r2_deps="mips"
2561 mips64r6_deps="mips"
2562 mipsfpu_deps="mips"
2563 mipsdsp_deps="mips"
2564 mipsdspr2_deps="mips"
2565 mmi_deps_any="loongson2 loongson3"
2566 msa_deps="mipsfpu"
2567 msa2_deps="msa"
2568
2569 cpunop_deps="i686"
2570 x86_64_select="i686"
2571 x86_64_suggest="fast_cmov"
2572
2573 amd3dnow_deps="mmx"
2574 amd3dnowext_deps="amd3dnow"
2575 i686_deps="x86"
2576 mmx_deps="x86"
2577 mmxext_deps="mmx"
2578 sse_deps="mmxext"
2579 sse2_deps="sse"
2580 sse3_deps="sse2"
2581 ssse3_deps="sse3"
2582 sse4_deps="ssse3"
2583 sse42_deps="sse4"
2584 aesni_deps="sse42"
2585 avx_deps="sse42"
2586 xop_deps="avx"
2587 fma3_deps="avx"
2588 fma4_deps="avx"
2589 avx2_deps="avx"
2590 avx512_deps="avx2"
2591
2592 mmx_external_deps="x86asm"
2593 mmx_inline_deps="inline_asm x86"
2594 mmx_suggest="mmx_external mmx_inline"
2595
2596 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2597     eval dep=\$${ext}_deps
2598     eval ${ext}_external_deps='"${dep}_external"'
2599     eval ${ext}_inline_deps='"${dep}_inline"'
2600     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2601 done
2602
2603 aligned_stack_if_any="aarch64 ppc x86"
2604 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2605 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2606 fast_unaligned_if_any="aarch64 ppc x86"
2607 simd_align_16_if_any="altivec neon sse"
2608 simd_align_32_if_any="avx"
2609 simd_align_64_if_any="avx512"
2610
2611 # system capabilities
2612 linux_perf_deps="linux_perf_event_h"
2613 symver_if_any="symver_asm_label symver_gnu_asm"
2614 valgrind_backtrace_conflict="optimizations"
2615 valgrind_backtrace_deps="valgrind_valgrind_h"
2616
2617 # threading support
2618 atomics_gcc_if="sync_val_compare_and_swap"
2619 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2620 atomics_win32_if="MemoryBarrier"
2621 atomics_native_if_any="$ATOMICS_LIST"
2622 w32threads_deps="atomics_native"
2623 threads_if_any="$THREADS_LIST"
2624
2625 # subsystems
2626 cbs_av1_select="cbs"
2627 cbs_h264_select="cbs"
2628 cbs_h265_select="cbs"
2629 cbs_jpeg_select="cbs"
2630 cbs_mpeg2_select="cbs"
2631 cbs_vp9_select="cbs"
2632 dct_select="rdft"
2633 dirac_parse_select="golomb"
2634 dnn_suggest="libtensorflow libopenvino"
2635 dnn_deps="swscale"
2636 error_resilience_select="me_cmp"
2637 faandct_deps="faan"
2638 faandct_select="fdctdsp"
2639 faanidct_deps="faan"
2640 faanidct_select="idctdsp"
2641 h264dsp_select="startcode"
2642 hevcparse_select="atsc_a53 golomb"
2643 frame_thread_encoder_deps="encoders threads"
2644 intrax8_select="blockdsp idctdsp"
2645 mdct_select="fft"
2646 mdct15_select="fft"
2647 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2648 mpeg_er_select="error_resilience"
2649 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2650 mpegaudiodsp_select="dct"
2651 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2652 mpegvideoenc_select="aandcttables me_cmp mpegvideo pixblockdsp qpeldsp"
2653 vc1dsp_select="h264chroma qpeldsp startcode"
2654 rdft_select="fft"
2655
2656 # decoders / encoders
2657 aac_decoder_select="adts_header mdct15 mdct sinewin"
2658 aac_fixed_decoder_select="adts_header mdct"
2659 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2660 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2661 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2662 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2663 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2664 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2665 acelp_kelvin_decoder_select="audiodsp"
2666 adpcm_g722_decoder_select="g722dsp"
2667 adpcm_g722_encoder_select="g722dsp"
2668 aic_decoder_select="golomb idctdsp"
2669 alac_encoder_select="lpc"
2670 als_decoder_select="bswapdsp"
2671 amrnb_decoder_select="lsp"
2672 amrwb_decoder_select="lsp"
2673 amv_decoder_select="sp5x_decoder exif"
2674 amv_encoder_select="jpegtables mpegvideoenc"
2675 ape_decoder_select="bswapdsp llauddsp"
2676 apng_decoder_deps="zlib"
2677 apng_encoder_deps="zlib"
2678 apng_encoder_select="llvidencdsp"
2679 aptx_decoder_select="audio_frame_queue"
2680 aptx_encoder_select="audio_frame_queue"
2681 aptx_hd_decoder_select="audio_frame_queue"
2682 aptx_hd_encoder_select="audio_frame_queue"
2683 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2684 asv1_encoder_select="aandcttables bswapdsp fdctdsp pixblockdsp"
2685 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2686 asv2_encoder_select="aandcttables bswapdsp fdctdsp pixblockdsp"
2687 atrac1_decoder_select="mdct sinewin"
2688 atrac3_decoder_select="mdct"
2689 atrac3al_decoder_select="mdct"
2690 atrac3p_decoder_select="mdct sinewin"
2691 atrac3pal_decoder_select="mdct sinewin"
2692 atrac9_decoder_select="mdct"
2693 av1_decoder_select="cbs_av1"
2694 bink_decoder_select="blockdsp hpeldsp"
2695 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2696 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2697 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2698 clearvideo_decoder_select="idctdsp"
2699 cllc_decoder_select="bswapdsp"
2700 comfortnoise_encoder_select="lpc"
2701 cook_decoder_select="audiodsp mdct sinewin"
2702 cscd_decoder_select="lzo"
2703 cscd_decoder_suggest="zlib"
2704 dca_decoder_select="mdct"
2705 dca_encoder_select="mdct"
2706 dds_decoder_select="texturedsp"
2707 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2708 dnxhd_decoder_select="blockdsp idctdsp"
2709 dnxhd_encoder_select="blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2710 dolby_e_decoder_select="mdct"
2711 dvvideo_decoder_select="dvprofile idctdsp"
2712 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2713 dxa_decoder_deps="zlib"
2714 dxv_decoder_select="lzf texturedsp"
2715 eac3_decoder_select="ac3_decoder"
2716 eac3_encoder_select="ac3_encoder"
2717 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2718 eatgq_decoder_select="aandcttables"
2719 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2720 exr_decoder_deps="zlib"
2721 exr_encoder_deps="zlib"
2722 ffv1_decoder_select="rangecoder"
2723 ffv1_encoder_select="rangecoder"
2724 ffvhuff_decoder_select="huffyuv_decoder"
2725 ffvhuff_encoder_select="huffyuv_encoder"
2726 fic_decoder_select="golomb"
2727 flac_decoder_select="flacdsp"
2728 flac_encoder_select="bswapdsp flacdsp lpc"
2729 flashsv2_decoder_deps="zlib"
2730 flashsv2_encoder_deps="zlib"
2731 flashsv_decoder_deps="zlib"
2732 flashsv_encoder_deps="zlib"
2733 flv_decoder_select="h263_decoder"
2734 flv_encoder_select="h263_encoder"
2735 fourxm_decoder_select="blockdsp bswapdsp"
2736 fraps_decoder_select="bswapdsp huffman"
2737 g2m_decoder_deps="zlib"
2738 g2m_decoder_select="blockdsp idctdsp jpegtables"
2739 g729_decoder_select="audiodsp"
2740 h261_decoder_select="mpegvideo"
2741 h261_encoder_select="mpegvideoenc"
2742 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2743 h263_encoder_select="h263dsp mpegvideoenc"
2744 h263i_decoder_select="h263_decoder"
2745 h263p_decoder_select="h263_decoder"
2746 h263p_encoder_select="h263_encoder"
2747 h264_decoder_select="atsc_a53 cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2748 h264_decoder_suggest="error_resilience"
2749 hap_decoder_select="snappy texturedsp"
2750 hap_encoder_deps="libsnappy"
2751 hap_encoder_select="texturedspenc"
2752 hevc_decoder_select="atsc_a53 bswapdsp cabac golomb hevcparse videodsp"
2753 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2754 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2755 hymt_decoder_select="huffyuv_decoder"
2756 iac_decoder_select="imc_decoder"
2757 imc_decoder_select="bswapdsp fft mdct sinewin"
2758 imm4_decoder_select="bswapdsp"
2759 imm5_decoder_select="h264_decoder hevc_decoder"
2760 indeo3_decoder_select="hpeldsp"
2761 indeo4_decoder_select="ividsp"
2762 indeo5_decoder_select="ividsp"
2763 interplay_video_decoder_select="hpeldsp"
2764 jpegls_decoder_select="mjpeg_decoder"
2765 jv_decoder_select="blockdsp"
2766 lagarith_decoder_select="llviddsp"
2767 ljpeg_encoder_select="idctdsp jpegtables"
2768 lscr_decoder_deps="zlib"
2769 magicyuv_decoder_select="llviddsp"
2770 magicyuv_encoder_select="llvidencdsp"
2771 mdec_decoder_select="blockdsp bswapdsp idctdsp mpegvideo"
2772 metasound_decoder_select="lsp mdct sinewin"
2773 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2774 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2775 mjpeg_encoder_select="jpegtables mpegvideoenc"
2776 mjpegb_decoder_select="mjpeg_decoder"
2777 mlp_decoder_select="mlp_parser"
2778 mlp_encoder_select="lpc audio_frame_queue"
2779 mobiclip_decoder_select="bswapdsp golomb"
2780 motionpixels_decoder_select="bswapdsp"
2781 mp1_decoder_select="mpegaudio"
2782 mp1float_decoder_select="mpegaudio"
2783 mp2_decoder_select="mpegaudio"
2784 mp2float_decoder_select="mpegaudio"
2785 mp3_decoder_select="mpegaudio"
2786 mp3adu_decoder_select="mpegaudio"
2787 mp3adufloat_decoder_select="mpegaudio"
2788 mp3float_decoder_select="mpegaudio"
2789 mp3on4_decoder_select="mpegaudio"
2790 mp3on4float_decoder_select="mpegaudio"
2791 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2792 mpc8_decoder_select="mpegaudiodsp"
2793 mpegvideo_decoder_select="mpegvideo"
2794 mpeg1video_decoder_select="mpegvideo"
2795 mpeg1video_encoder_select="mpegvideoenc h263dsp"
2796 mpeg2video_decoder_select="mpegvideo"
2797 mpeg2video_encoder_select="mpegvideoenc h263dsp"
2798 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2799 mpeg4_encoder_select="h263_encoder"
2800 msa1_decoder_select="mss34dsp"
2801 mscc_decoder_deps="zlib"
2802 msmpeg4v1_decoder_select="h263_decoder"
2803 msmpeg4v2_decoder_select="h263_decoder"
2804 msmpeg4v2_encoder_select="h263_encoder"
2805 msmpeg4v3_decoder_select="h263_decoder"
2806 msmpeg4v3_encoder_select="h263_encoder"
2807 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2808 mts2_decoder_select="jpegtables mss34dsp"
2809 mv30_decoder_select="aandcttables blockdsp"
2810 mvha_decoder_deps="zlib"
2811 mvha_decoder_select="llviddsp"
2812 mwsc_decoder_deps="zlib"
2813 mxpeg_decoder_select="mjpeg_decoder"
2814 nellymoser_decoder_select="mdct sinewin"
2815 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2816 notchlc_decoder_select="lzf"
2817 nuv_decoder_select="idctdsp lzo"
2818 on2avc_decoder_select="mdct"
2819 opus_decoder_deps="swresample"
2820 opus_decoder_select="mdct15"
2821 opus_encoder_select="audio_frame_queue mdct15"
2822 png_decoder_deps="zlib"
2823 png_encoder_deps="zlib"
2824 png_encoder_select="llvidencdsp"
2825 prores_decoder_select="blockdsp idctdsp"
2826 prores_encoder_select="fdctdsp"
2827 qcelp_decoder_select="lsp"
2828 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2829 ra_144_decoder_select="audiodsp"
2830 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2831 ralf_decoder_select="golomb"
2832 rasc_decoder_deps="zlib"
2833 rawvideo_decoder_select="bswapdsp"
2834 rscc_decoder_deps="zlib"
2835 rtjpeg_decoder_select="me_cmp"
2836 rv10_decoder_select="h263_decoder"
2837 rv10_encoder_select="h263_encoder"
2838 rv20_decoder_select="h263_decoder"
2839 rv20_encoder_select="h263_encoder"
2840 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2841 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2842 screenpresso_decoder_deps="zlib"
2843 shorten_decoder_select="bswapdsp"
2844 sipr_decoder_select="lsp"
2845 smvjpeg_decoder_select="mjpeg_decoder"
2846 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2847 snow_encoder_select="dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2848 sonic_decoder_select="golomb rangecoder"
2849 sonic_encoder_select="golomb rangecoder"
2850 sonic_ls_encoder_select="golomb rangecoder"
2851 sp5x_decoder_select="mjpeg_decoder"
2852 speedhq_decoder_select="mpegvideo"
2853 speedhq_encoder_select="mpegvideoenc"
2854 srgc_decoder_deps="zlib"
2855 svq1_decoder_select="hpeldsp"
2856 svq1_encoder_select="hpeldsp me_cmp mpegvideoenc"
2857 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2858 svq3_decoder_suggest="zlib"
2859 tak_decoder_select="audiodsp"
2860 tdsc_decoder_deps="zlib"
2861 tdsc_decoder_select="mjpeg_decoder"
2862 theora_decoder_select="vp3_decoder"
2863 thp_decoder_select="mjpeg_decoder"
2864 tiff_decoder_select="mjpeg_decoder"
2865 tiff_decoder_suggest="zlib lzma"
2866 tiff_encoder_suggest="zlib"
2867 truehd_decoder_select="mlp_parser"
2868 truehd_encoder_select="lpc audio_frame_queue"
2869 truemotion2_decoder_select="bswapdsp"
2870 truespeech_decoder_select="bswapdsp"
2871 tscc_decoder_deps="zlib"
2872 twinvq_decoder_select="mdct lsp sinewin"
2873 txd_decoder_select="texturedsp"
2874 utvideo_decoder_select="bswapdsp llviddsp"
2875 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2876 vble_decoder_select="llviddsp"
2877 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2878 vc1image_decoder_select="vc1_decoder"
2879 vorbis_decoder_select="mdct"
2880 vorbis_encoder_select="audio_frame_queue mdct"
2881 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2882 vp4_decoder_select="vp3_decoder"
2883 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2884 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2885 vp6a_decoder_select="vp6_decoder"
2886 vp6f_decoder_select="vp6_decoder"
2887 vp7_decoder_select="h264pred videodsp vp8dsp"
2888 vp8_decoder_select="h264pred videodsp vp8dsp"
2889 vp9_decoder_select="videodsp vp9_parser vp9_superframe_split_bsf"
2890 wcmv_decoder_deps="zlib"
2891 webp_decoder_select="vp8_decoder exif"
2892 wmalossless_decoder_select="llauddsp"
2893 wmapro_decoder_select="mdct sinewin wma_freqs"
2894 wmav1_decoder_select="mdct sinewin wma_freqs"
2895 wmav1_encoder_select="mdct sinewin wma_freqs"
2896 wmav2_decoder_select="mdct sinewin wma_freqs"
2897 wmav2_encoder_select="mdct sinewin wma_freqs"
2898 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2899 wmv1_decoder_select="h263_decoder"
2900 wmv1_encoder_select="h263_encoder"
2901 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2902 wmv2_encoder_select="h263_encoder wmv2dsp"
2903 wmv3_decoder_select="vc1_decoder"
2904 wmv3image_decoder_select="wmv3_decoder"
2905 xma1_decoder_select="wmapro_decoder"
2906 xma2_decoder_select="wmapro_decoder"
2907 ylc_decoder_select="bswapdsp"
2908 zerocodec_decoder_deps="zlib"
2909 zlib_decoder_deps="zlib"
2910 zlib_encoder_deps="zlib"
2911 zmbv_decoder_deps="zlib"
2912 zmbv_encoder_deps="zlib"
2913
2914 # hardware accelerators
2915 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2916 cuda_deps="ffnvcodec"
2917 cuvid_deps="ffnvcodec"
2918 d3d11va_deps="dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2919 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32 user32"
2920 ffnvcodec_deps_any="libdl LoadLibrary"
2921 nvdec_deps="ffnvcodec"
2922 vaapi_x11_deps="xlib"
2923 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2924 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2925 xvmc_deps="X11_extensions_XvMClib_h"
2926
2927 av1_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_AV1"
2928 av1_d3d11va_hwaccel_select="av1_decoder"
2929 av1_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_AV1"
2930 av1_d3d11va2_hwaccel_select="av1_decoder"
2931 av1_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_AV1"
2932 av1_dxva2_hwaccel_select="av1_decoder"
2933 av1_nvdec_hwaccel_deps="nvdec CUVIDAV1PICPARAMS"
2934 av1_nvdec_hwaccel_select="av1_decoder"
2935 av1_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferAV1_bit_depth_idx"
2936 av1_vaapi_hwaccel_select="av1_decoder"
2937 h263_vaapi_hwaccel_deps="vaapi"
2938 h263_vaapi_hwaccel_select="h263_decoder"
2939 h263_videotoolbox_hwaccel_deps="videotoolbox"
2940 h263_videotoolbox_hwaccel_select="h263_decoder"
2941 h264_d3d11va_hwaccel_deps="d3d11va"
2942 h264_d3d11va_hwaccel_select="h264_decoder"
2943 h264_d3d11va2_hwaccel_deps="d3d11va"
2944 h264_d3d11va2_hwaccel_select="h264_decoder"
2945 h264_dxva2_hwaccel_deps="dxva2"
2946 h264_dxva2_hwaccel_select="h264_decoder"
2947 h264_nvdec_hwaccel_deps="nvdec"
2948 h264_nvdec_hwaccel_select="h264_decoder"
2949 h264_vaapi_hwaccel_deps="vaapi"
2950 h264_vaapi_hwaccel_select="h264_decoder"
2951 h264_vdpau_hwaccel_deps="vdpau"
2952 h264_vdpau_hwaccel_select="h264_decoder"
2953 h264_videotoolbox_hwaccel_deps="videotoolbox"
2954 h264_videotoolbox_hwaccel_select="h264_decoder"
2955 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2956 hevc_d3d11va_hwaccel_select="hevc_decoder"
2957 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2958 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2959 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2960 hevc_dxva2_hwaccel_select="hevc_decoder"
2961 hevc_nvdec_hwaccel_deps="nvdec"
2962 hevc_nvdec_hwaccel_select="hevc_decoder"
2963 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2964 hevc_vaapi_hwaccel_select="hevc_decoder"
2965 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2966 hevc_vdpau_hwaccel_select="hevc_decoder"
2967 hevc_videotoolbox_hwaccel_deps="videotoolbox"
2968 hevc_videotoolbox_hwaccel_select="hevc_decoder"
2969 mjpeg_nvdec_hwaccel_deps="nvdec"
2970 mjpeg_nvdec_hwaccel_select="mjpeg_decoder"
2971 mjpeg_vaapi_hwaccel_deps="vaapi"
2972 mjpeg_vaapi_hwaccel_select="mjpeg_decoder"
2973 mpeg_xvmc_hwaccel_deps="xvmc"
2974 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2975 mpeg1_nvdec_hwaccel_deps="nvdec"
2976 mpeg1_nvdec_hwaccel_select="mpeg1video_decoder"
2977 mpeg1_vdpau_hwaccel_deps="vdpau"
2978 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2979 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2980 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2981 mpeg1_xvmc_hwaccel_deps="xvmc"
2982 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2983 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2984 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2985 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2986 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2987 mpeg2_dxva2_hwaccel_deps="dxva2"
2988 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2989 mpeg2_nvdec_hwaccel_deps="nvdec"
2990 mpeg2_nvdec_hwaccel_select="mpeg2video_decoder"
2991 mpeg2_vaapi_hwaccel_deps="vaapi"
2992 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2993 mpeg2_vdpau_hwaccel_deps="vdpau"
2994 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2995 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2996 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2997 mpeg2_xvmc_hwaccel_deps="xvmc"
2998 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2999 mpeg4_nvdec_hwaccel_deps="nvdec"
3000 mpeg4_nvdec_hwaccel_select="mpeg4_decoder"
3001 mpeg4_vaapi_hwaccel_deps="vaapi"
3002 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
3003 mpeg4_vdpau_hwaccel_deps="vdpau"
3004 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
3005 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
3006 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
3007 vc1_d3d11va_hwaccel_deps="d3d11va"
3008 vc1_d3d11va_hwaccel_select="vc1_decoder"
3009 vc1_d3d11va2_hwaccel_deps="d3d11va"
3010 vc1_d3d11va2_hwaccel_select="vc1_decoder"
3011 vc1_dxva2_hwaccel_deps="dxva2"
3012 vc1_dxva2_hwaccel_select="vc1_decoder"
3013 vc1_nvdec_hwaccel_deps="nvdec"
3014 vc1_nvdec_hwaccel_select="vc1_decoder"
3015 vc1_vaapi_hwaccel_deps="vaapi"
3016 vc1_vaapi_hwaccel_select="vc1_decoder"
3017 vc1_vdpau_hwaccel_deps="vdpau"
3018 vc1_vdpau_hwaccel_select="vc1_decoder"
3019 vp8_nvdec_hwaccel_deps="nvdec"
3020 vp8_nvdec_hwaccel_select="vp8_decoder"
3021 vp8_vaapi_hwaccel_deps="vaapi"
3022 vp8_vaapi_hwaccel_select="vp8_decoder"
3023 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
3024 vp9_d3d11va_hwaccel_select="vp9_decoder"
3025 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
3026 vp9_d3d11va2_hwaccel_select="vp9_decoder"
3027 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
3028 vp9_dxva2_hwaccel_select="vp9_decoder"
3029 vp9_nvdec_hwaccel_deps="nvdec"
3030 vp9_nvdec_hwaccel_select="vp9_decoder"
3031 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
3032 vp9_vaapi_hwaccel_select="vp9_decoder"
3033 vp9_vdpau_hwaccel_deps="vdpau VdpPictureInfoVP9"
3034 vp9_vdpau_hwaccel_select="vp9_decoder"
3035 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
3036 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
3037 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
3038 wmv3_nvdec_hwaccel_select="vc1_nvdec_hwaccel"
3039 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
3040 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
3041
3042 # hardware-accelerated codecs
3043 mediafoundation_deps="mftransform_h MFCreateAlignedMemoryBuffer"
3044 mediafoundation_extralibs="-lmfplat -lmfuuid -lole32 -lstrmiids"
3045 omx_deps="libdl pthreads"
3046 omx_rpi_select="omx"
3047 qsv_deps="libmfx"
3048 qsvdec_select="qsv"
3049 qsvenc_select="qsv"
3050 qsvvpp_select="qsv"
3051 vaapi_encode_deps="vaapi"
3052 v4l2_m2m_deps="linux_videodev2_h sem_timedwait"
3053
3054 hwupload_cuda_filter_deps="ffnvcodec"
3055 scale_npp_filter_deps="ffnvcodec libnpp"
3056 scale_cuda_filter_deps="ffnvcodec"
3057 scale_cuda_filter_deps_any="cuda_nvcc cuda_llvm"
3058 thumbnail_cuda_filter_deps="ffnvcodec"
3059 thumbnail_cuda_filter_deps_any="cuda_nvcc cuda_llvm"
3060 transpose_npp_filter_deps="ffnvcodec libnpp"
3061 overlay_cuda_filter_deps="ffnvcodec"
3062 overlay_cuda_filter_deps_any="cuda_nvcc cuda_llvm"
3063
3064 amf_deps_any="libdl LoadLibrary"
3065 nvenc_deps="ffnvcodec"
3066 nvenc_deps_any="libdl LoadLibrary"
3067 nvenc_encoder_deps="nvenc"
3068
3069 aac_mf_encoder_deps="mediafoundation"
3070 ac3_mf_encoder_deps="mediafoundation"
3071 av1_cuvid_decoder_deps="cuvid CUVIDAV1PICPARAMS"
3072 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
3073 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
3074 h264_amf_encoder_deps="amf"
3075 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
3076 h264_cuvid_decoder_deps="cuvid"
3077 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
3078 h264_mediacodec_decoder_deps="mediacodec"
3079 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
3080 h264_mf_encoder_deps="mediafoundation"
3081 h264_mmal_decoder_deps="mmal"
3082 h264_nvenc_encoder_deps="nvenc"
3083 h264_nvenc_encoder_select="atsc_a53"
3084 h264_omx_encoder_deps="omx"
3085 h264_qsv_decoder_select="h264_mp4toannexb_bsf qsvdec"
3086 h264_qsv_encoder_select="atsc_a53 qsvenc"
3087 h264_rkmpp_decoder_deps="rkmpp"
3088 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
3089 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
3090 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
3091 h264_v4l2m2m_decoder_select="h264_mp4toannexb_bsf"
3092 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
3093 hevc_amf_encoder_deps="amf"
3094 hevc_cuvid_decoder_deps="cuvid"
3095 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
3096 hevc_mediacodec_decoder_deps="mediacodec"
3097 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
3098 hevc_mf_encoder_deps="mediafoundation"
3099 hevc_nvenc_encoder_deps="nvenc"
3100 hevc_nvenc_encoder_select="atsc_a53"
3101 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf qsvdec"
3102 hevc_qsv_encoder_select="hevcparse qsvenc"
3103 hevc_rkmpp_decoder_deps="rkmpp"
3104 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
3105 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
3106 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
3107 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
3108 hevc_v4l2m2m_decoder_select="hevc_mp4toannexb_bsf"
3109 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
3110 mjpeg_cuvid_decoder_deps="cuvid"
3111 mjpeg_qsv_decoder_select="qsvdec"
3112 mjpeg_qsv_encoder_deps="libmfx"
3113 mjpeg_qsv_encoder_select="qsvenc"
3114 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
3115 mjpeg_vaapi_encoder_select="cbs_jpeg jpegtables vaapi_encode"
3116 mp3_mf_encoder_deps="mediafoundation"
3117 mpeg1_cuvid_decoder_deps="cuvid"
3118 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
3119 mpeg2_crystalhd_decoder_select="crystalhd"
3120 mpeg2_cuvid_decoder_deps="cuvid"
3121 mpeg2_mmal_decoder_deps="mmal"
3122 mpeg2_mediacodec_decoder_deps="mediacodec"
3123 mpeg2_qsv_decoder_select="qsvdec"
3124 mpeg2_qsv_encoder_select="qsvenc"
3125 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
3126 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
3127 mpeg4_crystalhd_decoder_select="crystalhd"
3128 mpeg4_cuvid_decoder_deps="cuvid"
3129 mpeg4_mediacodec_decoder_deps="mediacodec"
3130 mpeg4_mmal_decoder_deps="mmal"
3131 mpeg4_omx_encoder_deps="omx"
3132 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
3133 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
3134 msmpeg4_crystalhd_decoder_select="crystalhd"
3135 nvenc_h264_encoder_select="h264_nvenc_encoder"
3136 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
3137 vc1_crystalhd_decoder_select="crystalhd"
3138 vc1_cuvid_decoder_deps="cuvid"
3139 vc1_mmal_decoder_deps="mmal"
3140 vc1_qsv_decoder_select="qsvdec"
3141 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
3142 vp8_cuvid_decoder_deps="cuvid"
3143 vp8_mediacodec_decoder_deps="mediacodec"
3144 vp8_qsv_decoder_select="qsvdec"
3145 vp8_rkmpp_decoder_deps="rkmpp"
3146 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
3147 vp8_vaapi_encoder_select="vaapi_encode"
3148 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
3149 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
3150 vp9_cuvid_decoder_deps="cuvid"
3151 vp9_mediacodec_decoder_deps="mediacodec"
3152 vp9_qsv_decoder_select="qsvdec"
3153 vp9_rkmpp_decoder_deps="rkmpp"
3154 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
3155 vp9_vaapi_encoder_select="vaapi_encode"
3156 vp9_qsv_encoder_deps="libmfx MFX_CODEC_VP9"
3157 vp9_qsv_encoder_select="qsvenc"
3158 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
3159 wmv3_crystalhd_decoder_select="crystalhd"
3160 av1_qsv_decoder_select="qsvdec"
3161
3162 # parsers
3163 aac_parser_select="adts_header"
3164 av1_parser_select="cbs_av1"
3165 h264_parser_select="atsc_a53 golomb h264dsp h264parse"
3166 hevc_parser_select="hevcparse"
3167 mpegaudio_parser_select="mpegaudioheader"
3168 mpegvideo_parser_select="mpegvideo"
3169 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
3170 vc1_parser_select="vc1dsp"
3171
3172 # bitstream_filters
3173 aac_adtstoasc_bsf_select="adts_header"
3174 av1_frame_merge_bsf_select="cbs_av1"
3175 av1_frame_split_bsf_select="cbs_av1"
3176 av1_metadata_bsf_select="cbs_av1"
3177 eac3_core_bsf_select="ac3_parser"
3178 filter_units_bsf_select="cbs"
3179 h264_metadata_bsf_deps="const_nan"
3180 h264_metadata_bsf_select="cbs_h264"
3181 h264_redundant_pps_bsf_select="cbs_h264"
3182 hevc_metadata_bsf_select="cbs_h265"
3183 mjpeg2jpeg_bsf_select="jpegtables"
3184 mpeg2_metadata_bsf_select="cbs_mpeg2"
3185 trace_headers_bsf_select="cbs"
3186 vp9_metadata_bsf_select="cbs_vp9"
3187
3188 # external libraries
3189 aac_at_decoder_deps="audiotoolbox"
3190 aac_at_decoder_select="aac_adtstoasc_bsf"
3191 ac3_at_decoder_deps="audiotoolbox"
3192 ac3_at_decoder_select="ac3_parser"
3193 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
3194 alac_at_decoder_deps="audiotoolbox"
3195 amr_nb_at_decoder_deps="audiotoolbox"
3196 avisynth_deps_any="libdl LoadLibrary"
3197 avisynth_demuxer_deps="avisynth"
3198 avisynth_demuxer_select="riffdec"
3199 eac3_at_decoder_deps="audiotoolbox"
3200 eac3_at_decoder_select="ac3_parser"
3201 gsm_ms_at_decoder_deps="audiotoolbox"
3202 ilbc_at_decoder_deps="audiotoolbox"
3203 mp1_at_decoder_deps="audiotoolbox"
3204 mp2_at_decoder_deps="audiotoolbox"
3205 mp3_at_decoder_deps="audiotoolbox"
3206 mp1_at_decoder_select="mpegaudioheader"
3207 mp2_at_decoder_select="mpegaudioheader"
3208 mp3_at_decoder_select="mpegaudioheader"
3209 pcm_alaw_at_decoder_deps="audiotoolbox"
3210 pcm_mulaw_at_decoder_deps="audiotoolbox"
3211 qdmc_decoder_select="fft"
3212 qdmc_at_decoder_deps="audiotoolbox"
3213 qdm2_at_decoder_deps="audiotoolbox"
3214 aac_at_encoder_deps="audiotoolbox"
3215 aac_at_encoder_select="audio_frame_queue"
3216 alac_at_encoder_deps="audiotoolbox"
3217 alac_at_encoder_select="audio_frame_queue"
3218 ilbc_at_encoder_deps="audiotoolbox"
3219 ilbc_at_encoder_select="audio_frame_queue"
3220 pcm_alaw_at_encoder_deps="audiotoolbox"
3221 pcm_alaw_at_encoder_select="audio_frame_queue"
3222 pcm_mulaw_at_encoder_deps="audiotoolbox"
3223 pcm_mulaw_at_encoder_select="audio_frame_queue"
3224 chromaprint_muxer_deps="chromaprint"
3225 h264_videotoolbox_encoder_deps="pthreads"
3226 h264_videotoolbox_encoder_select="atsc_a53 videotoolbox_encoder"
3227 hevc_videotoolbox_encoder_deps="pthreads"
3228 hevc_videotoolbox_encoder_select="atsc_a53 videotoolbox_encoder"
3229 libaom_av1_decoder_deps="libaom"
3230 libaom_av1_encoder_deps="libaom"
3231 libaom_av1_encoder_select="extract_extradata_bsf"
3232 libaribb24_decoder_deps="libaribb24"
3233 libcelt_decoder_deps="libcelt"
3234 libcodec2_decoder_deps="libcodec2"
3235 libcodec2_encoder_deps="libcodec2"
3236 libdav1d_decoder_deps="libdav1d"
3237 libdav1d_decoder_select="atsc_a53"
3238 libdavs2_decoder_deps="libdavs2"
3239 libfdk_aac_decoder_deps="libfdk_aac"
3240 libfdk_aac_encoder_deps="libfdk_aac"
3241 libfdk_aac_encoder_select="audio_frame_queue"
3242 libgme_demuxer_deps="libgme"
3243 libgsm_decoder_deps="libgsm"
3244 libgsm_encoder_deps="libgsm"
3245 libgsm_ms_decoder_deps="libgsm"
3246 libgsm_ms_encoder_deps="libgsm"
3247 libilbc_decoder_deps="libilbc"
3248 libilbc_encoder_deps="libilbc"
3249 libkvazaar_encoder_deps="libkvazaar"
3250 libmodplug_demuxer_deps="libmodplug"
3251 libmp3lame_encoder_deps="libmp3lame"
3252 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
3253 libopencore_amrnb_decoder_deps="libopencore_amrnb"
3254 libopencore_amrnb_encoder_deps="libopencore_amrnb"
3255 libopencore_amrnb_encoder_select="audio_frame_queue"
3256 libopencore_amrwb_decoder_deps="libopencore_amrwb"
3257 libopenh264_decoder_deps="libopenh264"
3258 libopenh264_decoder_select="h264_mp4toannexb_bsf"
3259 libopenh264_encoder_deps="libopenh264"
3260 libopenjpeg_decoder_deps="libopenjpeg"
3261 libopenjpeg_encoder_deps="libopenjpeg"
3262 libopenmpt_demuxer_deps="libopenmpt"
3263 libopus_decoder_deps="libopus"
3264 libopus_encoder_deps="libopus"
3265 libopus_encoder_select="audio_frame_queue"
3266 librav1e_encoder_deps="librav1e"
3267 librav1e_encoder_select="extract_extradata_bsf"
3268 librsvg_decoder_deps="librsvg"
3269 libshine_encoder_deps="libshine"
3270 libshine_encoder_select="audio_frame_queue"
3271 libspeex_decoder_deps="libspeex"
3272 libspeex_encoder_deps="libspeex"
3273 libspeex_encoder_select="audio_frame_queue"
3274 libsvtav1_encoder_deps="libsvtav1"
3275 libtheora_encoder_deps="libtheora"
3276 libtwolame_encoder_deps="libtwolame"
3277 libuavs3d_decoder_deps="libuavs3d"
3278 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
3279 libvorbis_decoder_deps="libvorbis"
3280 libvorbis_encoder_deps="libvorbis libvorbisenc"
3281 libvorbis_encoder_select="audio_frame_queue"
3282 libvpx_vp8_decoder_deps="libvpx"
3283 libvpx_vp8_encoder_deps="libvpx"
3284 libvpx_vp9_decoder_deps="libvpx"
3285 libvpx_vp9_encoder_deps="libvpx"
3286 libwebp_encoder_deps="libwebp"
3287 libwebp_anim_encoder_deps="libwebp"
3288 libx262_encoder_deps="libx262"
3289 libx264_encoder_deps="libx264"
3290 libx264_encoder_select="atsc_a53"
3291 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
3292 libx264rgb_encoder_select="libx264_encoder"
3293 libx265_encoder_deps="libx265"
3294 libxavs_encoder_deps="libxavs"
3295 libxavs2_encoder_deps="libxavs2"
3296 libxvid_encoder_deps="libxvid"
3297 libzvbi_teletext_decoder_deps="libzvbi"
3298 vapoursynth_demuxer_deps="vapoursynth"
3299 videotoolbox_suggest="coreservices"
3300 videotoolbox_deps="corefoundation coremedia corevideo"
3301 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
3302
3303 # demuxers / muxers
3304 ac3_demuxer_select="ac3_parser"
3305 act_demuxer_select="riffdec"
3306 aiff_muxer_select="iso_media"
3307 asf_demuxer_select="riffdec"
3308 asf_o_demuxer_select="riffdec"
3309 asf_muxer_select="riffenc"
3310 asf_stream_muxer_select="asf_muxer"
3311 av1_demuxer_select="av1_frame_merge_bsf av1_parser"
3312 avi_demuxer_select="riffdec exif"
3313 avi_muxer_select="riffenc"
3314 caf_demuxer_select="iso_media"
3315 caf_muxer_select="iso_media"
3316 dash_muxer_select="mp4_muxer"
3317 dash_demuxer_deps="libxml2"
3318 dirac_demuxer_select="dirac_parser"
3319 dts_demuxer_select="dca_parser"
3320 dtshd_demuxer_select="dca_parser"
3321 dv_demuxer_select="dvprofile"
3322 dv_muxer_select="dvprofile"
3323 dxa_demuxer_select="riffdec"
3324 eac3_demuxer_select="ac3_parser"
3325 f4v_muxer_select="mov_muxer"
3326 fifo_muxer_deps="threads"
3327 flac_demuxer_select="flac_parser"
3328 flv_muxer_select="aac_adtstoasc_bsf"
3329 gxf_muxer_select="pcm_rechunk_bsf"
3330 hds_muxer_select="flv_muxer"
3331 hls_muxer_select="mpegts_muxer"
3332 hls_muxer_suggest="gcrypt openssl"
3333 image2_alias_pix_demuxer_select="image2_demuxer"
3334 image2_brender_pix_demuxer_select="image2_demuxer"
3335 ipod_muxer_select="mov_muxer"
3336 ismv_muxer_select="mov_muxer"
3337 ivf_muxer_select="av1_metadata_bsf vp9_superframe_bsf"
3338 latm_muxer_select="aac_adtstoasc_bsf"
3339 matroska_audio_muxer_select="matroska_muxer"
3340 matroska_demuxer_select="riffdec"
3341 matroska_demuxer_suggest="bzlib lzo zlib"
3342 matroska_muxer_select="riffenc vp9_superframe_bsf aac_adtstoasc_bsf"
3343 mlp_demuxer_select="mlp_parser"
3344 mmf_muxer_select="riffenc"
3345 mov_demuxer_select="iso_media riffdec"
3346 mov_demuxer_suggest="zlib"
3347 mov_muxer_select="iso_media riffenc rtpenc_chain vp9_superframe_bsf aac_adtstoasc_bsf"
3348 mp3_demuxer_select="mpegaudio_parser"
3349 mp3_muxer_select="mpegaudioheader"
3350 mp4_muxer_select="mov_muxer"
3351 mpegts_demuxer_select="iso_media"
3352 mpegts_muxer_select="ac3_parser adts_muxer latm_muxer h264_mp4toannexb_bsf hevc_mp4toannexb_bsf"
3353 mpegtsraw_demuxer_select="mpegts_demuxer"
3354 mxf_muxer_select="golomb pcm_rechunk_bsf"
3355 mxf_d10_muxer_select="mxf_muxer"
3356 mxf_opatom_muxer_select="mxf_muxer"
3357 nut_muxer_select="riffenc"
3358 nuv_demuxer_select="riffdec"
3359 obu_demuxer_select="av1_frame_merge_bsf av1_parser"
3360 oga_muxer_select="ogg_muxer"
3361 ogg_demuxer_select="dirac_parse"
3362 ogv_muxer_select="ogg_muxer"
3363 opus_muxer_select="ogg_muxer"
3364 psp_muxer_select="mov_muxer"
3365 rtp_demuxer_select="sdp_demuxer"
3366 rtp_muxer_select="golomb jpegtables"
3367 rtp_mpegts_muxer_select="mpegts_muxer rtp_muxer"
3368 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3369 rtsp_demuxer_select="http_protocol rtpdec"
3370 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3371 sap_demuxer_select="sdp_demuxer"
3372 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3373 sdp_demuxer_select="rtpdec"
3374 smoothstreaming_muxer_select="ismv_muxer"
3375 spdif_demuxer_select="adts_header"
3376 spdif_muxer_select="adts_header"
3377 spx_muxer_select="ogg_muxer"
3378 swf_demuxer_suggest="zlib"
3379 tak_demuxer_select="tak_parser"
3380 truehd_demuxer_select="mlp_parser"
3381 tg2_muxer_select="mov_muxer"
3382 tgp_muxer_select="mov_muxer"
3383 vobsub_demuxer_select="mpegps_demuxer"
3384 w64_demuxer_select="wav_demuxer"
3385 w64_muxer_select="wav_muxer"
3386 wav_demuxer_select="riffdec"
3387 wav_muxer_select="riffenc"
3388 webm_chunk_muxer_select="webm_muxer"
3389 webm_muxer_select="riffenc"
3390 webm_dash_manifest_demuxer_select="matroska_demuxer"
3391 wtv_demuxer_select="mpegts_demuxer riffdec"
3392 wtv_muxer_select="mpegts_muxer riffenc"
3393 xmv_demuxer_select="riffdec"
3394 xwma_demuxer_select="riffdec"
3395
3396 # indevs / outdevs
3397 android_camera_indev_deps="android camera2ndk mediandk pthreads"
3398 android_camera_indev_extralibs="-landroid -lcamera2ndk -lmediandk"
3399 alsa_indev_deps="alsa"
3400 alsa_outdev_deps="alsa"
3401 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3402 avfoundation_indev_suggest="coregraphics applicationservices"
3403 avfoundation_indev_extralibs="-framework Foundation"
3404 audiotoolbox_outdev_deps="audiotoolbox pthreads"
3405 audiotoolbox_outdev_extralibs="-framework AudioToolbox -framework CoreAudio"
3406 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3407 caca_outdev_deps="libcaca"
3408 decklink_deps_any="libdl LoadLibrary"
3409 decklink_indev_deps="decklink threads"
3410 decklink_indev_extralibs="-lstdc++"
3411 decklink_outdev_deps="decklink threads"
3412 decklink_outdev_suggest="libklvanc"
3413 decklink_outdev_extralibs="-lstdc++"
3414 dshow_indev_deps="IBaseFilter"
3415 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3416 fbdev_indev_deps="linux_fb_h"
3417 fbdev_outdev_deps="linux_fb_h"
3418 gdigrab_indev_deps="CreateDIBSection"
3419 gdigrab_indev_extralibs="-lgdi32"
3420 gdigrab_indev_select="bmp_decoder"
3421 iec61883_indev_deps="libiec61883"
3422 jack_indev_deps="libjack"
3423 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3424 kmsgrab_indev_deps="libdrm"
3425 lavfi_indev_deps="avfilter"
3426 libcdio_indev_deps="libcdio"
3427 libdc1394_indev_deps="libdc1394"
3428 openal_indev_deps="openal"
3429 opengl_outdev_deps="opengl"
3430 opengl_outdev_suggest="sdl2"
3431 oss_indev_deps_any="sys_soundcard_h"
3432 oss_outdev_deps_any="sys_soundcard_h"
3433 pulse_indev_deps="libpulse"
3434 pulse_outdev_deps="libpulse"
3435 sdl2_outdev_deps="sdl2"
3436 sndio_indev_deps="sndio"
3437 sndio_outdev_deps="sndio"
3438 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3439 v4l2_indev_suggest="libv4l2"
3440 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3441 v4l2_outdev_suggest="libv4l2"
3442 vfwcap_indev_deps="vfw32 vfwcap_defines"
3443 xcbgrab_indev_deps="libxcb"
3444 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3445 xv_outdev_deps="xlib"
3446
3447 # protocols
3448 async_protocol_deps="threads"
3449 bluray_protocol_deps="libbluray"
3450 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3451 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl mbedtls"
3452 ffrtmpcrypt_protocol_select="tcp_protocol"
3453 ffrtmphttp_protocol_conflict="librtmp_protocol"
3454 ffrtmphttp_protocol_select="http_protocol"
3455 ftp_protocol_select="tcp_protocol"
3456 gopher_protocol_select="tcp_protocol"
3457 gophers_protocol_select="tls_protocol"
3458 http_protocol_select="tcp_protocol"
3459 http_protocol_suggest="zlib"
3460 httpproxy_protocol_select="tcp_protocol"
3461 httpproxy_protocol_suggest="zlib"
3462 https_protocol_select="tls_protocol"
3463 https_protocol_suggest="zlib"
3464 icecast_protocol_select="http_protocol"
3465 mmsh_protocol_select="http_protocol"
3466 mmst_protocol_select="network"
3467 rtmp_protocol_conflict="librtmp_protocol"
3468 rtmp_protocol_select="tcp_protocol"
3469 rtmp_protocol_suggest="zlib"
3470 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3471 rtmpe_protocol_suggest="zlib"
3472 rtmps_protocol_conflict="librtmp_protocol"
3473 rtmps_protocol_select="tls_protocol"
3474 rtmps_protocol_suggest="zlib"
3475 rtmpt_protocol_select="ffrtmphttp_protocol"
3476 rtmpt_protocol_suggest="zlib"
3477 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3478 rtmpte_protocol_suggest="zlib"
3479 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3480 rtmpts_protocol_suggest="zlib"
3481 rtp_protocol_select="udp_protocol"
3482 schannel_conflict="openssl gnutls libtls mbedtls"
3483 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3484 sctp_protocol_select="network"
3485 securetransport_conflict="openssl gnutls libtls mbedtls"
3486 srtp_protocol_select="rtp_protocol srtp"
3487 tcp_protocol_select="network"
3488 tls_protocol_deps_any="gnutls openssl schannel securetransport libtls mbedtls"
3489 tls_protocol_select="tcp_protocol"
3490 udp_protocol_select="network"
3491 udplite_protocol_select="network"
3492 unix_protocol_deps="sys_un_h"
3493 unix_protocol_select="network"
3494
3495 # external library protocols
3496 libamqp_protocol_deps="librabbitmq"
3497 libamqp_protocol_select="network"
3498 librist_protocol_deps="librist"
3499 librist_protocol_select="network"
3500 librtmp_protocol_deps="librtmp"
3501 librtmpe_protocol_deps="librtmp"
3502 librtmps_protocol_deps="librtmp"
3503 librtmpt_protocol_deps="librtmp"
3504 librtmpte_protocol_deps="librtmp"
3505 libsmbclient_protocol_deps="libsmbclient gplv3"
3506 libsrt_protocol_deps="libsrt"
3507 libsrt_protocol_select="network"
3508 libssh_protocol_deps="libssh"
3509 libtls_conflict="openssl gnutls mbedtls"
3510 libzmq_protocol_deps="libzmq"
3511 libzmq_protocol_select="network"
3512
3513 # filters
3514 afftdn_filter_deps="avcodec"
3515 afftdn_filter_select="fft"
3516 afftfilt_filter_deps="avcodec"
3517 afftfilt_filter_select="fft"
3518 afir_filter_deps="avcodec"
3519 afir_filter_select="rdft"
3520 amovie_filter_deps="avcodec avformat"
3521 aresample_filter_deps="swresample"
3522 asoftclip_filter_deps="swresample"
3523 asr_filter_deps="pocketsphinx"
3524 ass_filter_deps="libass"
3525 atempo_filter_deps="avcodec"
3526 atempo_filter_select="rdft"
3527 avgblur_opencl_filter_deps="opencl"
3528 avgblur_vulkan_filter_deps="vulkan libglslang"
3529 azmq_filter_deps="libzmq"
3530 blackframe_filter_deps="gpl"
3531 bm3d_filter_deps="avcodec"
3532 bm3d_filter_select="dct"
3533 boxblur_filter_deps="gpl"
3534 boxblur_opencl_filter_deps="opencl gpl"
3535 bs2b_filter_deps="libbs2b"
3536 chromaber_vulkan_filter_deps="vulkan libglslang"
3537 colorkey_opencl_filter_deps="opencl"
3538 colormatrix_filter_deps="gpl"
3539 convolution_opencl_filter_deps="opencl"
3540 convolve_filter_deps="avcodec"
3541 convolve_filter_select="fft"
3542 coreimage_filter_deps="coreimage appkit"
3543 coreimage_filter_extralibs="-framework OpenGL"
3544 coreimagesrc_filter_deps="coreimage appkit"
3545 coreimagesrc_filter_extralibs="-framework OpenGL"
3546 cover_rect_filter_deps="avcodec avformat gpl"
3547 cropdetect_filter_deps="gpl"
3548 deconvolve_filter_deps="avcodec"
3549 deconvolve_filter_select="fft"
3550 deinterlace_qsv_filter_deps="libmfx"
3551 deinterlace_vaapi_filter_deps="vaapi"
3552 delogo_filter_deps="gpl"
3553 denoise_vaapi_filter_deps="vaapi"
3554 derain_filter_select="dnn"
3555 deshake_filter_select="pixelutils"
3556 deshake_opencl_filter_deps="opencl"
3557 dilation_opencl_filter_deps="opencl"
3558 dnn_processing_filter_select="dnn"
3559 drawtext_filter_deps="libfreetype"
3560 drawtext_filter_suggest="libfontconfig libfribidi"
3561 elbg_filter_deps="avcodec"
3562 eq_filter_deps="gpl"
3563 erosion_opencl_filter_deps="opencl"
3564 fftfilt_filter_deps="avcodec"
3565 fftfilt_filter_select="rdft"
3566 fftdnoiz_filter_deps="avcodec"
3567 fftdnoiz_filter_select="fft"
3568 find_rect_filter_deps="avcodec avformat gpl"
3569 firequalizer_filter_deps="avcodec"
3570 firequalizer_filter_select="rdft"
3571 flite_filter_deps="libflite"
3572 framerate_filter_select="scene_sad"
3573 freezedetect_filter_select="scene_sad"
3574 frei0r_filter_deps="frei0r libdl"
3575 frei0r_src_filter_deps="frei0r libdl"
3576 fspp_filter_deps="gpl"
3577 headphone_filter_select="fft"
3578 histeq_filter_deps="gpl"
3579 hqdn3d_filter_deps="gpl"
3580 interlace_filter_deps="gpl"
3581 kerndeint_filter_deps="gpl"
3582 ladspa_filter_deps="ladspa libdl"
3583 lensfun_filter_deps="liblensfun version3"
3584 lv2_filter_deps="lv2"
3585 mcdeint_filter_deps="avcodec gpl"
3586 movie_filter_deps="avcodec avformat"
3587 mpdecimate_filter_deps="gpl"
3588 mpdecimate_filter_select="pixelutils"
3589 minterpolate_filter_select="scene_sad"
3590 mptestsrc_filter_deps="gpl"
3591 negate_filter_deps="lut_filter"
3592 nlmeans_opencl_filter_deps="opencl"
3593 nnedi_filter_deps="gpl"
3594 ocr_filter_deps="libtesseract"
3595 ocv_filter_deps="libopencv"
3596 openclsrc_filter_deps="opencl"
3597 overlay_opencl_filter_deps="opencl"
3598 overlay_qsv_filter_deps="libmfx"
3599 overlay_qsv_filter_select="qsvvpp"
3600 overlay_vulkan_filter_deps="vulkan libglslang"
3601 owdenoise_filter_deps="gpl"
3602 pad_opencl_filter_deps="opencl"
3603 pan_filter_deps="swresample"
3604 perspective_filter_deps="gpl"
3605 phase_filter_deps="gpl"
3606 pp7_filter_deps="gpl"
3607 pp_filter_deps="gpl postproc"
3608 prewitt_opencl_filter_deps="opencl"
3609 procamp_vaapi_filter_deps="vaapi"
3610 program_opencl_filter_deps="opencl"
3611 pullup_filter_deps="gpl"
3612 removelogo_filter_deps="avcodec avformat swscale"
3613 repeatfields_filter_deps="gpl"
3614 resample_filter_deps="avresample"
3615 roberts_opencl_filter_deps="opencl"
3616 rubberband_filter_deps="librubberband"
3617 sab_filter_deps="gpl swscale"
3618 scale2ref_filter_deps="swscale"
3619 scale_filter_deps="swscale"
3620 scale_qsv_filter_deps="libmfx"
3621 scdet_filter_select="scene_sad"
3622 select_filter_select="scene_sad"
3623 sharpness_vaapi_filter_deps="vaapi"
3624 showcqt_filter_deps="avcodec avformat swscale"
3625 showcqt_filter_suggest="libfontconfig libfreetype"
3626 showcqt_filter_select="fft"
3627 showfreqs_filter_deps="avcodec"
3628 showfreqs_filter_select="fft"
3629 showspatial_filter_select="fft"
3630 showspectrum_filter_deps="avcodec"
3631 showspectrum_filter_select="fft"
3632 showspectrumpic_filter_deps="avcodec"
3633 showspectrumpic_filter_select="fft"
3634 signature_filter_deps="gpl avcodec avformat"
3635 sinc_filter_select="rdft"
3636 smartblur_filter_deps="gpl swscale"
3637 sobel_opencl_filter_deps="opencl"
3638 sofalizer_filter_deps="libmysofa avcodec"
3639 sofalizer_filter_select="fft"
3640 spectrumsynth_filter_deps="avcodec"
3641 spectrumsynth_filter_select="fft"
3642 spp_filter_deps="gpl avcodec"
3643 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3644 sr_filter_deps="avformat swscale"
3645 sr_filter_select="dnn"
3646 stereo3d_filter_deps="gpl"
3647 subtitles_filter_deps="avformat avcodec libass"
3648 super2xsai_filter_deps="gpl"
3649 pixfmts_super2xsai_test_deps="super2xsai_filter"
3650 superequalizer_filter_select="rdft"
3651 surround_filter_select="rdft"
3652 tinterlace_filter_deps="gpl"
3653 tinterlace_merge_test_deps="tinterlace_filter"
3654 tinterlace_pad_test_deps="tinterlace_filter"
3655 tonemap_filter_deps="const_nan"
3656 tonemap_vaapi_filter_deps="vaapi VAProcFilterParameterBufferHDRToneMapping"
3657 tonemap_opencl_filter_deps="opencl const_nan"
3658 transpose_opencl_filter_deps="opencl"
3659 transpose_vaapi_filter_deps="vaapi VAProcPipelineCaps_rotation_flags"
3660 unsharp_opencl_filter_deps="opencl"
3661 uspp_filter_deps="gpl avcodec"
3662 vaguedenoiser_filter_deps="gpl"
3663 vidstabdetect_filter_deps="libvidstab"
3664 vidstabtransform_filter_deps="libvidstab"
3665 libvmaf_filter_deps="libvmaf pthreads"
3666 zmq_filter_deps="libzmq"
3667 zoompan_filter_deps="swscale"
3668 zscale_filter_deps="libzimg const_nan"
3669 scale_vaapi_filter_deps="vaapi"
3670 scale_vulkan_filter_deps="vulkan libglslang"
3671 vpp_qsv_filter_deps="libmfx"
3672 vpp_qsv_filter_select="qsvvpp"
3673 xfade_opencl_filter_deps="opencl"
3674 yadif_cuda_filter_deps="ffnvcodec"
3675 yadif_cuda_filter_deps_any="cuda_nvcc cuda_llvm"
3676
3677 # examples
3678 avio_list_dir_deps="avformat avutil"
3679 avio_reading_deps="avformat avcodec avutil"
3680 decode_audio_example_deps="avcodec avutil"
3681 decode_video_example_deps="avcodec avutil"
3682 demuxing_decoding_example_deps="avcodec avformat avutil"
3683 encode_audio_example_deps="avcodec avutil"
3684 encode_video_example_deps="avcodec avutil"
3685 extract_mvs_example_deps="avcodec avformat avutil"
3686 filter_audio_example_deps="avfilter avutil"
3687 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3688 filtering_video_example_deps="avfilter avcodec avformat avutil"
3689 http_multiclient_example_deps="avformat avutil fork"
3690 hw_decode_example_deps="avcodec avformat avutil"
3691 metadata_example_deps="avformat avutil"
3692 muxing_example_deps="avcodec avformat avutil swscale"
3693 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3694 remuxing_example_deps="avcodec avformat avutil"
3695 resampling_audio_example_deps="avutil swresample"
3696 scaling_video_example_deps="avutil swscale"
3697 transcode_aac_example_deps="avcodec avformat swresample"
3698 transcoding_example_deps="avfilter avcodec avformat avutil"
3699 vaapi_encode_example_deps="avcodec avutil h264_vaapi_encoder"
3700 vaapi_transcode_example_deps="avcodec avformat avutil h264_vaapi_encoder"
3701
3702 # EXTRALIBS_LIST
3703 cpu_init_extralibs="pthreads_extralibs"
3704 cws2fws_extralibs="zlib_extralibs"
3705
3706 # libraries, in any order
3707 avcodec_deps="avutil"
3708 avcodec_suggest="libm"
3709 avcodec_select="null_bsf"
3710 avdevice_deps="avformat avcodec avutil"
3711 avdevice_suggest="libm"
3712 avfilter_deps="avutil"
3713 avfilter_suggest="libm"
3714 avformat_deps="avcodec avutil"
3715 avformat_suggest="libm network zlib"
3716 avresample_deps="avutil"
3717 avresample_suggest="libm"
3718 avutil_suggest="clock_gettime ffnvcodec libm libdrm libmfx opencl user32 vaapi vulkan videotoolbox corefoundation corevideo coremedia bcrypt"
3719 postproc_deps="avutil gpl"
3720 postproc_suggest="libm"
3721 swresample_deps="avutil"
3722 swresample_suggest="libm libsoxr"
3723 swscale_deps="avutil"
3724 swscale_suggest="libm"
3725
3726 avcodec_extralibs="pthreads_extralibs iconv_extralibs dxva2_extralibs"
3727 avfilter_extralibs="pthreads_extralibs"
3728 avutil_extralibs="d3d11va_extralibs nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3729
3730 # programs
3731 ffmpeg_deps="avcodec avfilter avformat"
3732 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3733                hflip_filter null_filter
3734                transpose_filter trim_filter vflip_filter"
3735 ffmpeg_suggest="ole32 psapi shell32"
3736 ffplay_deps="avcodec avformat swscale swresample sdl2"
3737 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3738 ffplay_suggest="shell32"
3739 ffprobe_deps="avcodec avformat"
3740 ffprobe_suggest="shell32"
3741
3742 # documentation
3743 podpages_deps="perl"
3744 manpages_deps="perl pod2man"
3745 htmlpages_deps="perl"
3746 htmlpages_deps_any="makeinfo_html texi2html"
3747 txtpages_deps="perl makeinfo"
3748 doc_deps_any="manpages htmlpages podpages txtpages"
3749
3750 # default parameters
3751
3752 logfile="ffbuild/config.log"
3753
3754 # installation paths
3755 prefix_default="/usr/local"
3756 bindir_default='${prefix}/bin'
3757 datadir_default='${prefix}/share/ffmpeg'
3758 docdir_default='${prefix}/share/doc/ffmpeg'
3759 incdir_default='${prefix}/include'
3760 libdir_default='${prefix}/lib'
3761 mandir_default='${prefix}/share/man'
3762
3763 # toolchain
3764 ar_default="ar"
3765 cc_default="gcc"
3766 cxx_default="g++"
3767 host_cc_default="gcc"
3768 doxygen_default="doxygen"
3769 install="install"
3770 ln_s_default="ln -s -f"
3771 nm_default="nm -g"
3772 pkg_config_default=pkg-config
3773 ranlib_default="ranlib"
3774 strip_default="strip"
3775 version_script='--version-script'
3776 objformat="elf32"
3777 x86asmexe_default="nasm"
3778 windres_default="windres"
3779 striptype="direct"
3780
3781 # OS
3782 target_os_default=$(tolower $(uname -s))
3783 host_os=$target_os_default
3784
3785 # machine
3786 if test "$target_os_default" = aix; then
3787     arch_default=$(uname -p)
3788     strip_default="strip -X32_64"
3789     nm_default="nm -g -X32_64"
3790 else
3791     arch_default=$(uname -m)
3792 fi
3793 cpu="generic"
3794 intrinsics="none"
3795
3796 # configurable options
3797 enable $PROGRAM_LIST
3798 enable $DOCUMENT_LIST
3799 enable $EXAMPLE_LIST
3800 enable $(filter_out avresample $LIBRARY_LIST)
3801 enable stripping
3802
3803 enable asm
3804 enable debug
3805 enable doc
3806 enable faan faandct faanidct
3807 enable large_tests
3808 enable optimizations
3809 enable runtime_cpudetect
3810 enable safe_bitstream_reader
3811 enable static
3812 enable swscale_alpha
3813 enable valgrind_backtrace
3814
3815 sws_max_filter_size_default=256
3816 set_default sws_max_filter_size
3817
3818 # internal components are enabled by default
3819 enable $EXTRALIBS_LIST
3820
3821 # Avoid external, non-system, libraries getting enabled by dependency resolution
3822 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3823
3824 # build settings
3825 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3826 LIBPREF="lib"
3827 LIBSUF=".a"
3828 FULLNAME='$(NAME)$(BUILDSUF)'
3829 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3830 SLIBPREF="lib"
3831 SLIBSUF=".so"
3832 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3833 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3834 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3835 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3836 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3837 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3838 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3839
3840 asflags_filter=echo
3841 cflags_filter=echo
3842 ldflags_filter=echo
3843
3844 AS_C='-c'
3845 AS_O='-o $@'
3846 CC_C='-c'
3847 CC_E='-E -o $@'
3848 CC_O='-o $@'
3849 CXX_C='-c'
3850 CXX_O='-o $@'
3851 OBJCC_C='-c'
3852 OBJCC_E='-E -o $@'
3853 OBJCC_O='-o $@'
3854 X86ASM_O='-o $@'
3855 LD_O='-o $@'
3856 LD_LIB='-l%'
3857 LD_PATH='-L'
3858 HOSTCC_C='-c'
3859 HOSTCC_E='-E -o $@'
3860 HOSTCC_O='-o $@'
3861 HOSTLD_O='-o $@'
3862 NVCC_C='-c'
3863 NVCC_O='-o $@'
3864
3865 host_extralibs='-lm'
3866 host_cflags_filter=echo
3867 host_ldflags_filter=echo
3868
3869 target_path='$(CURDIR)'
3870
3871 # since the object filename is not given with the -MM flag, the compiler
3872 # is only able to print the basename, and we must add the path ourselves
3873 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3874 DEPFLAGS='-MM'
3875
3876 mkdir -p ffbuild
3877
3878 # find source path
3879 if test -f configure; then
3880     source_path=.
3881 elif test -f src/configure; then
3882     source_path=src
3883 else
3884     source_path=$(cd $(dirname "$0"); pwd)
3885     case "$source_path" in
3886         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3887     esac
3888     test -e "$source_path/config.h" &&
3889         die "Out of tree builds are impossible with config.h in source dir."
3890 fi
3891
3892 for v in "$@"; do
3893     r=${v#*=}
3894     l=${v%"$r"}
3895     r=$(sh_quote "$r")
3896     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3897 done
3898
3899 find_things_extern(){
3900     thing=$1
3901     pattern=$2
3902     file=$source_path/$3
3903     out=${4:-$thing}
3904     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$out/p" "$file"
3905 }
3906
3907 find_filters_extern(){
3908     file=$source_path/$1
3909     sed -n 's/^extern AVFilter ff_[avfsinkrc]\{2,5\}_\([[:alnum:]_]\{1,\}\);/\1_filter/p' $file
3910 }
3911
3912 FILTER_LIST=$(find_filters_extern libavfilter/allfilters.c)
3913 OUTDEV_LIST=$(find_things_extern muxer AVOutputFormat libavdevice/alldevices.c outdev)
3914 INDEV_LIST=$(find_things_extern demuxer AVInputFormat libavdevice/alldevices.c indev)
3915 MUXER_LIST=$(find_things_extern muxer AVOutputFormat libavformat/allformats.c)
3916 DEMUXER_LIST=$(find_things_extern demuxer AVInputFormat libavformat/allformats.c)
3917 ENCODER_LIST=$(find_things_extern encoder AVCodec libavcodec/allcodecs.c)
3918 DECODER_LIST=$(find_things_extern decoder AVCodec libavcodec/allcodecs.c)
3919 CODEC_LIST="
3920     $ENCODER_LIST
3921     $DECODER_LIST
3922 "
3923 PARSER_LIST=$(find_things_extern parser AVCodecParser libavcodec/parsers.c)
3924 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3925 HWACCEL_LIST=$(find_things_extern hwaccel AVHWAccel libavcodec/hwaccels.h)
3926 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3927
3928 AVCODEC_COMPONENTS_LIST="
3929     $BSF_LIST
3930     $DECODER_LIST
3931     $ENCODER_LIST
3932     $HWACCEL_LIST
3933     $PARSER_LIST
3934 "
3935
3936 AVDEVICE_COMPONENTS_LIST="
3937     $INDEV_LIST
3938     $OUTDEV_LIST
3939 "
3940
3941 AVFILTER_COMPONENTS_LIST="
3942     $FILTER_LIST
3943 "
3944
3945 AVFORMAT_COMPONENTS_LIST="
3946     $DEMUXER_LIST
3947     $MUXER_LIST
3948     $PROTOCOL_LIST
3949 "
3950
3951 ALL_COMPONENTS="
3952     $AVCODEC_COMPONENTS_LIST
3953     $AVDEVICE_COMPONENTS_LIST
3954     $AVFILTER_COMPONENTS_LIST
3955     $AVFORMAT_COMPONENTS_LIST
3956 "
3957
3958 for n in $COMPONENT_LIST; do
3959     v=$(toupper ${n%s})_LIST
3960     eval enable \$$v
3961     eval ${n}_if_any="\$$v"
3962 done
3963
3964 enable $ARCH_EXT_LIST
3965
3966 die_unknown(){
3967     echo "Unknown option \"$1\"."
3968     echo "See $0 --help for available options."
3969     exit 1
3970 }
3971
3972 print_in_columns() {
3973     tr ' ' '\n' | sort | tr '\r\n' '  ' | awk -v col_width=24 -v width="$ncols" '
3974     {
3975         num_cols = width > col_width ? int(width / col_width) : 1;
3976         num_rows = int((NF + num_cols-1) / num_cols);
3977         y = x = 1;
3978         for (y = 1; y <= num_rows; y++) {
3979             i = y;
3980             for (x = 1; x <= num_cols; x++) {
3981                 if (i <= NF) {
3982                   line = sprintf("%s%-" col_width "s", line, $i);
3983                 }
3984                 i = i + num_rows;
3985             }
3986             print line; line = "";
3987         }
3988     }' | sed 's/ *$//'
3989 }
3990
3991 show_list() {
3992     suffix=_$1
3993     shift
3994     echo $* | sed s/$suffix//g | print_in_columns
3995     exit 0
3996 }
3997
3998 rand_list(){
3999     IFS=', '
4000     set -- $*
4001     unset IFS
4002     for thing; do
4003         comp=${thing%:*}
4004         prob=${thing#$comp}
4005         prob=${prob#:}
4006         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
4007         echo "prob ${prob:-0.5}"
4008         printf '%s\n' $comp
4009     done
4010 }
4011
4012 do_random(){
4013     action=$1
4014     shift
4015     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
4016     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
4017 }
4018
4019 for opt do
4020     optval="${opt#*=}"
4021     case "$opt" in
4022         --extra-ldflags=*)
4023             add_ldflags $optval
4024         ;;
4025         --extra-ldexeflags=*)
4026             add_ldexeflags $optval
4027         ;;
4028         --extra-ldsoflags=*)
4029             add_ldsoflags $optval
4030         ;;
4031         --extra-ldlibflags=*)
4032             warn "The --extra-ldlibflags option is only provided for compatibility and will be\n"\
4033                  "removed in the future. Use --extra-ldsoflags instead."
4034             add_ldsoflags $optval
4035         ;;
4036         --extra-libs=*)
4037             add_extralibs $optval
4038         ;;
4039         --disable-devices)
4040             disable $INDEV_LIST $OUTDEV_LIST
4041         ;;
4042         --enable-debug=*)
4043             debuglevel="$optval"
4044         ;;
4045         --disable-programs)
4046             disable $PROGRAM_LIST
4047         ;;
4048         --disable-everything)
4049             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
4050         ;;
4051         --disable-all)
4052             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
4053             disable $LIBRARY_LIST $PROGRAM_LIST doc
4054             enable avutil
4055         ;;
4056         --enable-random|--disable-random)
4057             action=${opt%%-random}
4058             do_random ${action#--} $COMPONENT_LIST
4059         ;;
4060         --enable-random=*|--disable-random=*)
4061             action=${opt%%-random=*}
4062             do_random ${action#--} $optval
4063         ;;
4064         --enable-sdl)
4065             enable sdl2
4066         ;;
4067         --enable-*=*|--disable-*=*)
4068             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
4069             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
4070             eval list=\$$(toupper $thing)_LIST
4071             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
4072             list=$(filter "$name" $list)
4073             [ "$list" = "" ] && warn "Option $opt did not match anything"
4074             test $action = enable && warn_if_gets_disabled $list
4075             $action $list
4076         ;;
4077         --enable-yasm|--disable-yasm)
4078             warn "The ${opt} option is only provided for compatibility and will be\n"\
4079                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
4080             test $opt = --enable-yasm && x86asm=yes || x86asm=no
4081         ;;
4082         --yasmexe=*)
4083             warn "The --yasmexe option is only provided for compatibility and will be\n"\
4084                  "removed in the future. Use --x86asmexe instead."
4085             x86asmexe="$optval"
4086         ;;
4087         --enable-?*|--disable-?*)
4088             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
4089             if is_in $option $COMPONENT_LIST; then
4090                 test $action = disable && action=unset
4091                 eval $action \$$(toupper ${option%s})_LIST
4092             elif is_in $option $CMDLINE_SELECT; then
4093                 $action $option
4094             else
4095                 die_unknown $opt
4096             fi
4097         ;;
4098         --list-*)
4099             NAME="${opt#--list-}"
4100             is_in $NAME $COMPONENT_LIST || die_unknown $opt
4101             NAME=${NAME%s}
4102             eval show_list $NAME \$$(toupper $NAME)_LIST
4103         ;;
4104         --help|-h) show_help
4105         ;;
4106         --quiet|-q) quiet=yes
4107         ;;
4108         --fatal-warnings) enable fatal_warnings
4109         ;;
4110         --libfuzzer=*)
4111             libfuzzer_path="$optval"
4112         ;;
4113         *)
4114             optname="${opt%%=*}"
4115             optname="${optname#--}"
4116             optname=$(echo "$optname" | sed 's/-/_/g')
4117             if is_in $optname $CMDLINE_SET; then
4118                 eval $optname='$optval'
4119             elif is_in $optname $CMDLINE_APPEND; then
4120                 append $optname "$optval"
4121             else
4122                 die_unknown $opt
4123             fi
4124         ;;
4125     esac
4126 done
4127
4128 for e in $env; do
4129     eval "export $e"
4130 done
4131
4132 if disabled autodetect; then
4133
4134     # Unless iconv is explicitely disabled by the user, we still want to probe
4135     # for the iconv from the libc.
4136     disabled iconv || enable libc_iconv
4137
4138     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
4139     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
4140 fi
4141 # Mark specifically enabled, but normally autodetected libraries as requested.
4142 for lib in $AUTODETECT_LIBS; do
4143     enabled $lib && request $lib
4144 done
4145 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
4146 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
4147 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
4148
4149 disabled logging && logfile=/dev/null
4150
4151 # command line configuration sanity checks
4152
4153 # we need to build at least one lib type
4154 if ! enabled_any static shared; then
4155     cat <<EOF
4156 At least one library type must be built.
4157 Specify --enable-static to build the static libraries or --enable-shared to
4158 build the shared libraries as well. To only build the shared libraries specify
4159 --disable-static in addition to --enable-shared.
4160 EOF
4161     exit 1
4162 fi
4163
4164 die_license_disabled() {
4165     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
4166 }
4167
4168 die_license_disabled_gpl() {
4169     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
4170 }
4171
4172 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
4173 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
4174
4175 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
4176 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
4177
4178 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4179
4180 if enabled nonfree; then
4181     license="nonfree and unredistributable"
4182 elif enabled gplv3; then
4183     license="GPL version 3 or later"
4184 elif enabled lgplv3; then
4185     license="LGPL version 3 or later"
4186 elif enabled gpl; then
4187     license="GPL version 2 or later"
4188 else
4189     license="LGPL version 2.1 or later"
4190 fi
4191
4192 enabled_all gnutls openssl &&
4193     die "GnuTLS and OpenSSL must not be enabled at the same time."
4194
4195 enabled_all gnutls mbedtls &&
4196     die "GnuTLS and mbedTLS must not be enabled at the same time."
4197
4198 enabled_all openssl mbedtls &&
4199     die "OpenSSL and mbedTLS must not be enabled at the same time."
4200
4201 # Disable all the library-specific components if the library itself
4202 # is disabled, see AVCODEC_LIST and following _LIST variables.
4203
4204 disable_components(){
4205     disabled ${1} && disable $(
4206         eval components="\$$(toupper ${1})_COMPONENTS"
4207         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
4208     )
4209 }
4210
4211 map 'disable_components $v' $LIBRARY_LIST
4212
4213 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
4214 set >> $logfile
4215
4216 test -n "$valgrind" && toolchain="valgrind-memcheck"
4217
4218 enabled ossfuzz && ! echo $CFLAGS | grep -q -- "-fsanitize="  && ! echo $CFLAGS | grep -q -- "-fcoverage-mapping" &&{
4219     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
4220     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
4221 }
4222
4223 case "$toolchain" in
4224     *-asan)
4225         cc_default="${toolchain%-asan}"
4226         add_cflags  -fsanitize=address
4227         add_ldflags -fsanitize=address
4228     ;;
4229     *-msan)
4230         cc_default="${toolchain%-msan}"
4231         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
4232         add_ldflags -fsanitize=memory
4233     ;;
4234     *-tsan)
4235         cc_default="${toolchain%-tsan}"
4236         add_cflags  -fsanitize=thread
4237         add_ldflags -fsanitize=thread
4238         case "$toolchain" in
4239             gcc-tsan)
4240                 add_cflags  -fPIC
4241                 add_ldflags -fPIC
4242                 ;;
4243         esac
4244     ;;
4245     *-usan)
4246         cc_default="${toolchain%-usan}"
4247         add_cflags  -fsanitize=undefined
4248         add_ldflags -fsanitize=undefined
4249     ;;
4250     valgrind-*)
4251         target_exec_default="valgrind"
4252         case "$toolchain" in
4253             valgrind-massif)
4254                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
4255                 ;;
4256             valgrind-memcheck)
4257                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
4258                 ;;
4259         esac
4260     ;;
4261     msvc)
4262         # Check whether the current MSVC version needs the C99 converter.
4263         # From MSVC 2013 (compiler major version 18) onwards, it does actually
4264         # support enough of C99 to build ffmpeg. Default to the new
4265         # behaviour if the regexp was unable to match anything, since this
4266         # successfully parses the version number of existing supported
4267         # versions that require the converter (MSVC 2010 and 2012).
4268         cl_major_ver=$(cl.exe 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
4269         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
4270             cc_default="cl.exe"
4271             cxx_default="cl.exe"
4272         else
4273             die "Unsupported MSVC version (2013 or newer required)"
4274         fi
4275         ld_default="$source_path/compat/windows/mslink"
4276         nm_default="dumpbin.exe -symbols"
4277         ar_default="lib.exe"
4278         case "${arch:-$arch_default}" in
4279         aarch64|arm64)
4280             as_default="armasm64.exe"
4281             ;;
4282         arm*)
4283             as_default="armasm.exe"
4284             ;;
4285         esac
4286         target_os_default="win32"
4287         # Use a relative path for TMPDIR. This makes sure all the
4288         # ffconf temp files are written with a relative path, avoiding
4289         # issues with msys/win32 path conversion for MSVC parameters
4290         # such as -Fo<file> or -out:<file>.
4291         TMPDIR=.
4292     ;;
4293     icl)
4294         cc_default="icl"
4295         ld_default="xilink"
4296         nm_default="dumpbin -symbols"
4297         ar_default="xilib"
4298         target_os_default="win32"
4299         TMPDIR=.
4300     ;;
4301     gcov)
4302         add_cflags  -fprofile-arcs -ftest-coverage
4303         add_ldflags -fprofile-arcs -ftest-coverage
4304     ;;
4305     llvm-cov)
4306         add_cflags -fprofile-arcs -ftest-coverage
4307         add_ldflags --coverage
4308     ;;
4309     hardened)
4310         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
4311         add_cflags   -fno-strict-overflow -fstack-protector-all
4312         add_ldflags  -Wl,-z,relro -Wl,-z,now
4313         add_cflags   -fPIE
4314         add_ldexeflags -fPIE -pie
4315     ;;
4316     ?*)
4317         die "Unknown toolchain $toolchain"
4318     ;;
4319 esac
4320
4321 if test -n "$cross_prefix"; then
4322     test -n "$arch" && test -n "$target_os" ||
4323         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
4324     enable cross_compile
4325 fi
4326
4327 set_default target_os
4328 if test "$target_os" = android; then
4329     cc_default="clang"
4330 fi
4331
4332 ar_default="${cross_prefix}${ar_default}"
4333 cc_default="${cross_prefix}${cc_default}"
4334 cxx_default="${cross_prefix}${cxx_default}"
4335 nm_default="${cross_prefix}${nm_default}"
4336 pkg_config_default="${cross_prefix}${pkg_config_default}"
4337 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
4338     ranlib_default="${cross_prefix}${ranlib_default} -D"
4339 else
4340     ranlib_default="${cross_prefix}${ranlib_default}"
4341 fi
4342 strip_default="${cross_prefix}${strip_default}"
4343 windres_default="${cross_prefix}${windres_default}"
4344
4345 sysinclude_default="${sysroot}/usr/include"
4346
4347 if enabled cuda_sdk; then
4348     warn "Option --enable-cuda-sdk is deprecated. Use --enable-cuda-nvcc instead."
4349     enable cuda_nvcc
4350 fi
4351
4352 if enabled cuda_nvcc; then
4353     nvcc_default="nvcc"
4354     nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
4355 else
4356     nvcc_default="clang"
4357     nvccflags_default="--cuda-gpu-arch=sm_30 -O2"
4358     NVCC_C=""
4359 fi
4360
4361 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
4362     target_exec x86asmexe nvcc
4363 enabled cross_compile || host_cc_default=$cc
4364 set_default host_cc
4365
4366 pkg_config_fail_message=""
4367 if ! $pkg_config --version >/dev/null 2>&1; then
4368     warn "$pkg_config not found, library detection may fail."
4369     pkg_config=false
4370 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
4371     pkg_config_fail_message="
4372 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
4373 fi
4374
4375 if test $doxygen != $doxygen_default && \
4376   ! $doxygen --version >/dev/null 2>&1; then
4377     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
4378 fi
4379
4380 exesuf() {
4381     case $1 in
4382         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
4383     esac
4384 }
4385
4386 EXESUF=$(exesuf $target_os)
4387 HOSTEXESUF=$(exesuf $host_os)
4388
4389 # set temporary file name
4390 : ${TMPDIR:=$TEMPDIR}
4391 : ${TMPDIR:=$TMP}
4392 : ${TMPDIR:=/tmp}
4393
4394 if [ -n "$tempprefix" ] ; then
4395     mktemp(){
4396         tmpname="$tempprefix.${HOSTNAME}.${UID}"
4397         echo "$tmpname"
4398         mkdir "$tmpname"
4399     }
4400 elif ! test_cmd mktemp -u XXXXXX; then
4401     # simple replacement for missing mktemp
4402     # NOT SAFE FOR GENERAL USE
4403     mktemp(){
4404         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
4405         echo "$tmpname"
4406         mkdir "$tmpname"
4407     }
4408 fi
4409
4410 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
4411     die "Unable to create temporary directory in $TMPDIR."
4412
4413 tmpfile(){
4414     tmp="${FFTMPDIR}/test"$2
4415     (set -C; exec > $tmp) 2> /dev/null ||
4416         die "Unable to create temporary file in $FFTMPDIR."
4417     eval $1=$tmp
4418 }
4419
4420 trap 'rm -rf -- "$FFTMPDIR"' EXIT
4421 trap 'exit 2' INT
4422
4423 tmpfile TMPASM .asm
4424 tmpfile TMPC   .c
4425 tmpfile TMPCPP .cpp
4426 tmpfile TMPE   $EXESUF
4427 tmpfile TMPH   .h
4428 tmpfile TMPM   .m
4429 tmpfile TMPCU  .cu
4430 tmpfile TMPO   .o
4431 tmpfile TMPS   .S
4432 tmpfile TMPSH  .sh
4433 tmpfile TMPV   .ver
4434
4435 unset -f mktemp
4436
4437 chmod +x $TMPE
4438
4439 # make sure we can execute files in $TMPDIR
4440 cat > $TMPSH 2>> $logfile <<EOF
4441 #! /bin/sh
4442 EOF
4443 chmod +x $TMPSH >> $logfile 2>&1
4444 if ! $TMPSH >> $logfile 2>&1; then
4445     cat <<EOF
4446 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
4447 variable to another directory and make sure that it is not mounted noexec.
4448 EOF
4449     die "Sanity test failed."
4450 fi
4451
4452 armasm_flags(){
4453     for flag; do
4454         case $flag in
4455             # Filter out MSVC cl.exe options from cflags that shouldn't
4456             # be passed to gas-preprocessor
4457             -M[TD]*)                                            ;;
4458             *)                  echo $flag                      ;;
4459         esac
4460    done
4461 }
4462
4463 cparser_flags(){
4464     for flag; do
4465         case $flag in
4466             -Wno-switch)             echo -Wno-switch-enum ;;
4467             -Wno-format-zero-length) ;;
4468             -Wdisabled-optimization) ;;
4469             -Wno-pointer-sign)       echo -Wno-other ;;
4470             *)                       echo $flag ;;
4471         esac
4472     done
4473 }
4474
4475 msvc_common_flags(){
4476     for flag; do
4477         case $flag in
4478             # In addition to specifying certain flags under the compiler
4479             # specific filters, they must be specified here as well or else the
4480             # generic catch all at the bottom will print the original flag.
4481             -Wall)                ;;
4482             -Wextra)              ;;
4483             -std=c*)              ;;
4484             # Common flags
4485             -fomit-frame-pointer) ;;
4486             -g)                   echo -Z7 ;;
4487             -fno-math-errno)      ;;
4488             -fno-common)          ;;
4489             -fno-signed-zeros)    ;;
4490             -fPIC)                ;;
4491             -mthumb)              ;;
4492             -march=*)             ;;
4493             -lz)                  echo zlib.lib ;;
4494             -lx264)               echo libx264.lib ;;
4495             -lstdc++)             ;;
4496             -l*)                  echo ${flag#-l}.lib ;;
4497             -LARGEADDRESSAWARE)   echo $flag ;;
4498             -L*)                  echo -libpath:${flag#-L} ;;
4499             -Wl,*)                ;;
4500             *)                    echo $flag ;;
4501         esac
4502     done
4503 }
4504
4505 msvc_flags(){
4506     msvc_common_flags "$@"
4507     for flag; do
4508         case $flag in
4509             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4510                                        -wd4554 ;;
4511             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4512                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4513                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4514                                        -wd4307 \
4515                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4516         esac
4517     done
4518 }
4519
4520 icl_flags(){
4521     msvc_common_flags "$@"
4522     for flag; do
4523         case $flag in
4524             # Despite what Intel's documentation says -Wall, which is supported
4525             # on Windows, does enable remarks so disable them here.
4526             -Wall)                echo $flag -Qdiag-disable:remark ;;
4527             -std=c99)             echo -Qstd=c99 ;;
4528             -flto)                echo -ipo ;;
4529         esac
4530     done
4531 }
4532
4533 icc_flags(){
4534     for flag; do
4535         case $flag in
4536             -flto)                echo -ipo ;;
4537             *)                    echo $flag ;;
4538         esac
4539     done
4540 }
4541
4542 suncc_flags(){
4543     for flag; do
4544         case $flag in
4545             -march=*|-mcpu=*)
4546                 case "${flag#*=}" in
4547                     native)                   echo -xtarget=native       ;;
4548                     v9|niagara)               echo -xarch=sparc          ;;
4549                     ultrasparc)               echo -xarch=sparcvis       ;;
4550                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4551                     i586|pentium)             echo -xchip=pentium        ;;
4552                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4553                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4554                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4555                     pentium4*)          echo -xtarget=pentium4           ;;
4556                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4557                     *-sse3)             echo -xarch=sse3                 ;;
4558                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4559                     bonnell)                   echo -xarch=ssse3         ;;
4560                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4561                     westmere)                  echo -xtarget=westmere    ;;
4562                     silvermont)                echo -xarch=sse4_2        ;;
4563                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4564                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4565                                                echo -xarch=avx           ;;
4566                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4567                     btver1)                    echo -xarch=amdsse4a      ;;
4568                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4569                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4570                     k8|opteron|athlon64|athlon-fx)
4571                                                echo -xarch=sse2a         ;;
4572                     athlon*)                   echo -xarch=pentium_proa  ;;
4573                 esac
4574                 ;;
4575             -std=c99)             echo -xc99              ;;
4576             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4577             -fPIC)                echo -KPIC -xcode=pic32 ;;
4578             -W*,*)                echo $flag              ;;
4579             -f*-*|-W*|-mimpure-text)                      ;;
4580             -shared)              echo -G                 ;;
4581             *)                    echo $flag              ;;
4582         esac
4583     done
4584 }
4585
4586 probe_cc(){
4587     pfx=$1
4588     _cc=$2
4589     first=$3
4590
4591     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4592     unset _ld_o _ldflags _ld_lib _ld_path
4593     unset _depflags _DEPCMD _DEPFLAGS
4594     _flags_filter=echo
4595
4596     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4597         true # no-op to avoid reading stdin in following checks
4598     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4599         _type=llvm_gcc
4600         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4601         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4602         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4603         _cflags_speed='-O3'
4604         _cflags_size='-Os'
4605     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4606         _type=gcc
4607         gcc_version=$($_cc --version | head -n1)
4608         gcc_basever=$($_cc -dumpversion)
4609         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4610         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4611         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4612         case $gcc_basever in
4613             2) ;;
4614             2.*) ;;
4615             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4616         esac
4617         if [ "$first" = true ]; then
4618             case $gcc_basever in
4619                 4.2*)
4620                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4621             esac
4622         fi
4623         _cflags_speed='-O3'
4624         _cflags_size='-Os'
4625     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4626         _type=icc
4627         _ident=$($_cc --version | head -n1)
4628         _depflags='-MMD'
4629         _cflags_speed='-O3'
4630         _cflags_size='-Os'
4631         _cflags_noopt='-O1'
4632         _flags_filter=icc_flags
4633     elif $_cc -v 2>&1 | grep -q xlc; then
4634         _type=xlc
4635         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4636         _cflags_speed='-O5'
4637         _cflags_size='-O5 -qcompact'
4638     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4639         test -d "$sysroot" || die "No valid sysroot specified."
4640         _type=armcc
4641         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4642         armcc_conf="$PWD/armcc.conf"
4643         $_cc --arm_linux_configure                 \
4644              --arm_linux_config_file="$armcc_conf" \
4645              --configure_sysroot="$sysroot"        \
4646              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4647              die "Error creating armcc configuration file."
4648         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4649         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4650         as_default="${cross_prefix}gcc"
4651         _depflags='-MMD'
4652         _cflags_speed='-O3'
4653         _cflags_size='-Os'
4654     elif $_cc -v 2>&1 | grep -q clang && ! $_cc -? > /dev/null 2>&1; then
4655         _type=clang
4656         _ident=$($_cc --version 2>/dev/null | head -n1)
4657         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4658         _cflags_speed='-O3'
4659         _cflags_size='-Oz'
4660     elif $_cc -V 2>&1 | grep -q Sun; then
4661         _type=suncc
4662         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4663         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4664         _DEPFLAGS='-xM1 -xc99'
4665         _ldflags='-std=c99'
4666         _cflags_speed='-O5'
4667         _cflags_size='-O5 -xspace'
4668         _flags_filter=suncc_flags
4669     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4670         _type=pathscale
4671         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4672         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4673         _cflags_speed='-O2'
4674         _cflags_size='-Os'
4675         _flags_filter='filter_out -Wdisabled-optimization'
4676     elif $_cc -v 2>&1 | grep -q Open64; then
4677         _type=open64
4678         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4679         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4680         _cflags_speed='-O2'
4681         _cflags_size='-Os'
4682         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4683     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4684         _type=armasm
4685         _ident=$($_cc | head -n1)
4686         # 4509: "This form of conditional instruction is deprecated"
4687         _flags="-nologo -ignore 4509"
4688         _flags_filter=armasm_flags
4689     elif $_cc 2>&1 | grep -q Intel; then
4690         _type=icl
4691         _ident=$($_cc 2>&1 | head -n1)
4692         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4693         # Not only is O3 broken on 13.x+ but it is slower on all previous
4694         # versions (tested) as well.
4695         _cflags_speed="-O2"
4696         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4697         if $_cc 2>&1 | grep -q Linker; then
4698             _ld_o='-out:$@'
4699         else
4700             _ld_o='-Fe$@'
4701         fi
4702         _cc_o='-Fo$@'
4703         _cc_e='-P'
4704         _flags_filter=icl_flags
4705         _ld_lib='lib%.a'
4706         _ld_path='-libpath:'
4707         # -Qdiag-error to make icl error when seeing certain unknown arguments
4708         _flags='-nologo -Qdiag-error:4044,10157'
4709         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4710         # with MSVC which enables it by default.
4711         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4712         disable stripping
4713     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4714         # lld can emulate multiple different linkers; in ms link.exe mode,
4715         # the -? parameter gives the help output which contains an identifyable
4716         # string, while it gives an error in other modes.
4717         _type=lld-link
4718         # The link.exe mode doesn't have a switch for getting the version,
4719         # but we can force it back to gnu mode and get the version from there.
4720         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4721         _ld_o='-out:$@'
4722         _flags_filter=msvc_flags
4723         _ld_lib='lib%.a'
4724         _ld_path='-libpath:'
4725     elif $_cc -nologo- 2>&1 | grep -q Microsoft || { $_cc -v 2>&1 | grep -q clang && $_cc -? > /dev/null 2>&1; }; then
4726         _type=msvc
4727         if $_cc -nologo- 2>&1 | grep -q Microsoft; then
4728             _ident=$($_cc 2>&1 | head -n1 | tr -d '\r')
4729         else
4730             _ident=$($_cc --version 2>/dev/null | head -n1 | tr -d '\r')
4731         fi
4732         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4733         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4734         _cflags_speed="-O2"
4735         _cflags_size="-O1"
4736         _cflags_noopt="-O1"
4737         if $_cc -nologo- 2>&1 | grep -q Linker; then
4738             _ld_o='-out:$@'
4739         else
4740             _ld_o='-Fe$@'
4741         fi
4742         _cc_o='-Fo$@'
4743         _cc_e='-P -Fi$@'
4744         _flags_filter=msvc_flags
4745         _ld_lib='lib%.a'
4746         _ld_path='-libpath:'
4747         _flags='-nologo'
4748         disable stripping
4749     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4750         _type=cparser
4751         _ident=$($_cc --version | head -n1)
4752         _depflags='-MMD'
4753         _cflags_speed='-O4'
4754         _cflags_size='-O2'
4755         _flags_filter=cparser_flags
4756     fi
4757
4758     eval ${pfx}_type=\$_type
4759     eval ${pfx}_ident=\$_ident
4760 }
4761
4762 set_ccvars(){
4763     eval ${1}_C=\${_cc_c-\${${1}_C}}
4764     eval ${1}_E=\${_cc_e-\${${1}_E}}
4765     eval ${1}_O=\${_cc_o-\${${1}_O}}
4766
4767     if [ -n "$_depflags" ]; then
4768         eval ${1}_DEPFLAGS=\$_depflags
4769     else
4770         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4771         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4772         eval DEP${1}FLAGS=\$_flags
4773     fi
4774 }
4775
4776 probe_cc cc "$cc" "true"
4777 cflags_filter=$_flags_filter
4778 cflags_speed=$_cflags_speed
4779 cflags_size=$_cflags_size
4780 cflags_noopt=$_cflags_noopt
4781 add_cflags $_flags $_cflags
4782 cc_ldflags=$_ldflags
4783 set_ccvars CC
4784 set_ccvars CXX
4785
4786 probe_cc hostcc "$host_cc"
4787 host_cflags_filter=$_flags_filter
4788 host_cflags_speed=$_cflags_speed
4789 add_host_cflags  $_flags $_cflags
4790 set_ccvars HOSTCC
4791
4792 test -n "$cc_type" && enable $cc_type ||
4793     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4794
4795 : ${as_default:=$cc}
4796 : ${objcc_default:=$cc}
4797 : ${dep_cc_default:=$cc}
4798 : ${ld_default:=$cc}
4799 : ${host_ld_default:=$host_cc}
4800 set_default ar as objcc dep_cc ld ln_s host_ld windres
4801
4802 probe_cc as "$as"
4803 asflags_filter=$_flags_filter
4804 add_asflags $_flags $_cflags
4805 set_ccvars AS
4806
4807 probe_cc objcc "$objcc"
4808 objcflags_filter=$_flags_filter
4809 add_objcflags $_flags $_cflags
4810 set_ccvars OBJC
4811
4812 probe_cc ld "$ld"
4813 ldflags_filter=$_flags_filter
4814 add_ldflags $_flags $_ldflags
4815 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4816 LD_O=${_ld_o-$LD_O}
4817 LD_LIB=${_ld_lib-$LD_LIB}
4818 LD_PATH=${_ld_path-$LD_PATH}
4819
4820 probe_cc hostld "$host_ld"
4821 host_ldflags_filter=$_flags_filter
4822 add_host_ldflags $_flags $_ldflags
4823 HOSTLD_O=${_ld_o-$HOSTLD_O}
4824
4825 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4826     probe_cc depcc "$dep_cc"
4827     CCDEP=${_DEPCMD:-$DEPCMD}
4828     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4829     DEPCCFLAGS=$_flags
4830 fi
4831
4832 if $ar 2>&1 | grep -q Microsoft; then
4833     arflags="-nologo"
4834     ar_o='-out:$@'
4835 elif $ar 2>&1 | grep -q "\[D\] "; then
4836     arflags="rcD"
4837     ar_o='$@'
4838 else
4839     arflags="rc"
4840     ar_o='$@'
4841 fi
4842
4843 add_cflags $extra_cflags
4844 add_cxxflags $extra_cxxflags
4845 add_objcflags $extra_objcflags
4846 add_asflags $extra_cflags
4847
4848 if test -n "$sysroot"; then
4849     case "$cc_type" in
4850         gcc|llvm_gcc|clang)
4851             add_cppflags --sysroot="$sysroot"
4852             add_ldflags --sysroot="$sysroot"
4853         ;;
4854     esac
4855 fi
4856
4857 if test "$cpu" = host; then
4858     enabled cross_compile &&
4859         warn "--cpu=host makes no sense when cross-compiling."
4860
4861     case "$cc_type" in
4862         gcc|llvm_gcc)
4863             check_native(){
4864                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4865                 sed -n "/cc1.*$1=/{
4866                             s/.*$1=\\([^ ]*\\).*/\\1/
4867                             p
4868                             q
4869                         }" $TMPE
4870             }
4871             cpu=$(check_native -march || check_native -mcpu)
4872         ;;
4873         clang)
4874             check_native(){
4875                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4876                 sed -n "/cc1.*-target-cpu /{
4877                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4878                             p
4879                             q
4880                         }" $TMPE
4881             }
4882             cpu=$(check_native -march)
4883         ;;
4884     esac
4885
4886     test "${cpu:-host}" = host &&
4887         die "--cpu=host not supported with compiler $cc"
4888 fi
4889
4890 # Deal with common $arch aliases
4891 case "$arch" in
4892     aarch64|arm64)
4893         arch="aarch64"
4894     ;;
4895     arm*|iPad*|iPhone*)
4896         arch="arm"
4897     ;;
4898     mips*|IP*)
4899         case "$arch" in
4900         *el)
4901             add_cppflags -EL
4902             add_ldflags -EL
4903         ;;
4904         *eb)
4905             add_cppflags -EB
4906             add_ldflags -EB
4907         ;;
4908         esac
4909         arch="mips"
4910     ;;
4911     parisc*|hppa*)
4912         arch="parisc"
4913     ;;
4914     "Power Macintosh"|ppc*|powerpc*)
4915         arch="ppc"
4916     ;;
4917     s390|s390x)
4918         arch="s390"
4919     ;;
4920     sh4|sh)
4921         arch="sh4"
4922     ;;
4923     sun4*|sparc*)
4924         arch="sparc"
4925     ;;
4926     tilegx|tile-gx)
4927         arch="tilegx"
4928     ;;
4929     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4930         arch="x86"
4931     ;;
4932 esac
4933
4934 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4935 enable $arch
4936
4937 # Add processor-specific flags
4938 if enabled aarch64; then
4939
4940     case $cpu in
4941         armv*)
4942             cpuflags="-march=$cpu"
4943         ;;
4944         *)
4945             cpuflags="-mcpu=$cpu"
4946         ;;
4947     esac
4948
4949 elif enabled alpha; then
4950
4951     cpuflags="-mcpu=$cpu"
4952
4953 elif enabled arm; then
4954
4955     check_arm_arch() {
4956         test_cpp_condition stddef.h \
4957             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4958             $cpuflags
4959     }
4960
4961     probe_arm_arch() {
4962         if   check_arm_arch 4;        then echo armv4
4963         elif check_arm_arch 4T;       then echo armv4t
4964         elif check_arm_arch 5;        then echo armv5
4965         elif check_arm_arch 5E;       then echo armv5e
4966         elif check_arm_arch 5T;       then echo armv5t
4967         elif check_arm_arch 5TE;      then echo armv5te
4968         elif check_arm_arch 5TEJ;     then echo armv5te
4969         elif check_arm_arch 6;        then echo armv6
4970         elif check_arm_arch 6J;       then echo armv6j
4971         elif check_arm_arch 6K;       then echo armv6k
4972         elif check_arm_arch 6Z;       then echo armv6z
4973         elif check_arm_arch 6KZ;      then echo armv6zk
4974         elif check_arm_arch 6ZK;      then echo armv6zk
4975         elif check_arm_arch 6T2;      then echo armv6t2
4976         elif check_arm_arch 7;        then echo armv7
4977         elif check_arm_arch 7A  7_A;  then echo armv7-a
4978         elif check_arm_arch 7S;       then echo armv7-a
4979         elif check_arm_arch 7R  7_R;  then echo armv7-r
4980         elif check_arm_arch 7M  7_M;  then echo armv7-m
4981         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4982         elif check_arm_arch 8A  8_A;  then echo armv8-a
4983         fi
4984     }
4985
4986     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4987
4988     case $cpu in
4989         armv*)
4990             cpuflags="-march=$cpu"
4991             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4992         ;;
4993         *)
4994             cpuflags="-mcpu=$cpu"
4995             case $cpu in
4996                 cortex-a*)                               subarch=armv7a  ;;
4997                 cortex-r*)                               subarch=armv7r  ;;
4998                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4999                 arm11*)                                  subarch=armv6   ;;
5000                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
5001                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
5002                 *)                             subarch=$(probe_arm_arch) ;;
5003             esac
5004         ;;
5005     esac
5006
5007     case "$subarch" in
5008         armv5t*)    enable fast_clz                ;;
5009         armv[6-8]*)
5010             enable fast_clz
5011             disabled fast_unaligned || enable fast_unaligned
5012             ;;
5013     esac
5014
5015 elif enabled avr32; then
5016
5017     case $cpu in
5018         ap7[02]0[0-2])
5019             subarch="avr32_ap"
5020             cpuflags="-mpart=$cpu"
5021         ;;
5022         ap)
5023             subarch="avr32_ap"
5024             cpuflags="-march=$cpu"
5025         ;;
5026         uc3[ab]*)
5027             subarch="avr32_uc"
5028             cpuflags="-mcpu=$cpu"
5029         ;;
5030         uc)
5031             subarch="avr32_uc"
5032             cpuflags="-march=$cpu"
5033         ;;
5034     esac
5035
5036 elif enabled bfin; then
5037
5038     cpuflags="-mcpu=$cpu"
5039
5040 elif enabled mips; then
5041
5042     if [ "$cpu" != "generic" ]; then
5043         disable mips32r2
5044         disable mips32r5
5045         disable mips64r2
5046         disable mips32r6
5047         disable mips64r6
5048         disable loongson2
5049         disable loongson3
5050         disable mipsdsp
5051         disable mipsdspr2
5052
5053         cpuflags="-march=$cpu"
5054
5055         case $cpu in
5056             # General ISA levels
5057             mips1|mips3)
5058             ;;
5059             mips32r2)
5060                 enable mips32r2
5061             ;;
5062             mips32r5)
5063                 enable mips32r2
5064                 enable mips32r5
5065             ;;
5066             mips64r2|mips64r5)
5067                 enable mips64r2
5068                 enable loongson3
5069             ;;
5070             # Cores from MIPS(MTI)
5071             24kc)
5072                 disable mipsfpu
5073                 enable mips32r2
5074             ;;
5075             24kf*|24kec|34kc|74Kc|1004kc)
5076                 enable mips32r2
5077             ;;
5078             24kef*|34kf*|1004kf*)
5079                 enable mipsdsp
5080                 enable mips32r2
5081             ;;
5082             p5600)
5083                 enable mips32r2
5084                 enable mips32r5
5085                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
5086             ;;
5087             i6400)
5088                 enable mips64r6
5089                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
5090             ;;
5091             p6600)
5092                 enable mips64r6
5093                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
5094             ;;
5095             # Cores from Loongson
5096             loongson2e|loongson2f|loongson3*)
5097                 enable local_aligned
5098                 enable simd_align_16
5099                 enable fast_64bit
5100                 enable fast_clz
5101                 enable fast_cmov
5102                 enable fast_unaligned
5103                 disable aligned_stack
5104                 # When gcc version less than 5.3.0, add -fno-expensive-optimizations flag.
5105                 if test "$cc_type" = "gcc"; then
5106                     case $gcc_basever in
5107                         2|2.*|3.*|4.*|5.0|5.1|5.2)
5108                         expensive_optimization_flag="-fno-expensive-optimizations"
5109                         ;;
5110                         *)
5111                         expensive_optimization_flag=""
5112                         ;;
5113                     esac
5114                 fi
5115
5116                 case $cpu in
5117                     loongson3*)
5118                         enable loongson3
5119                         cpuflags="-march=loongson3a -mhard-float $expensive_optimization_flag"
5120                     ;;
5121                     loongson2e)
5122                         enable loongson2
5123                         cpuflags="-march=loongson2e -mhard-float $expensive_optimization_flag"
5124                     ;;
5125                     loongson2f)
5126                         enable loongson2
5127                         cpuflags="-march=loongson2f -mhard-float $expensive_optimization_flag"
5128                     ;;
5129                 esac
5130             ;;
5131             *)
5132                 warn "unknown MIPS CPU"
5133             ;;
5134         esac
5135
5136     else
5137         disable mipsdsp
5138         disable mipsdspr2
5139         # Disable DSP stuff for generic CPU, it can't be detected at runtime.
5140         warn 'generic cpu selected'
5141     fi
5142
5143 elif enabled ppc; then
5144
5145     disable ldbrx
5146
5147     case $(tolower $cpu) in
5148         601|ppc601|powerpc601)
5149             cpuflags="-mcpu=601"
5150             disable altivec
5151         ;;
5152         603*|ppc603*|powerpc603*)
5153             cpuflags="-mcpu=603"
5154             disable altivec
5155         ;;
5156         604*|ppc604*|powerpc604*)
5157             cpuflags="-mcpu=604"
5158             disable altivec
5159         ;;
5160         g3|75*|ppc75*|powerpc75*)
5161             cpuflags="-mcpu=750"
5162             disable altivec
5163         ;;
5164         g4|745*|ppc745*|powerpc745*)
5165             cpuflags="-mcpu=7450"
5166             disable vsx
5167         ;;
5168         74*|ppc74*|powerpc74*)
5169             cpuflags="-mcpu=7400"
5170             disable vsx
5171         ;;
5172         g5|970|ppc970|powerpc970)
5173             cpuflags="-mcpu=970"
5174             disable vsx
5175         ;;
5176         power[3-6]*)
5177             cpuflags="-mcpu=$cpu"
5178             disable vsx
5179         ;;
5180         power[7-8]*)
5181             cpuflags="-mcpu=$cpu"
5182         ;;
5183         cell)
5184             cpuflags="-mcpu=cell"
5185             enable ldbrx
5186             disable vsx
5187         ;;
5188         e500mc)
5189             cpuflags="-mcpu=e500mc"
5190             disable altivec
5191         ;;
5192         e500v2)
5193             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
5194             disable altivec
5195             disable dcbzl
5196         ;;
5197         e500)
5198             cpuflags="-mcpu=8540 -mhard-float"
5199             disable altivec
5200             disable dcbzl
5201         ;;
5202     esac
5203
5204 elif enabled sparc; then
5205
5206     case $cpu in
5207         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
5208             cpuflags="-mcpu=$cpu"
5209         ;;
5210         ultrasparc*|niagara[234])
5211             cpuflags="-mcpu=$cpu"
5212         ;;
5213     esac
5214
5215 elif enabled x86; then
5216
5217     case $cpu in
5218         i[345]86|pentium)
5219             cpuflags="-march=$cpu"
5220             disable i686
5221             disable mmx
5222         ;;
5223         # targets that do NOT support nopl and conditional mov (cmov)
5224         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
5225             cpuflags="-march=$cpu"
5226             disable i686
5227         ;;
5228         # targets that do support nopl and conditional mov (cmov)
5229         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
5230         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
5231         |amdfam10|barcelona|b[dt]ver*|znver*)
5232             cpuflags="-march=$cpu"
5233             enable i686
5234             enable fast_cmov
5235         ;;
5236         # targets that do support conditional mov but on which it's slow
5237         pentium4|pentium4m|prescott|nocona)
5238             cpuflags="-march=$cpu"
5239             enable i686
5240             disable fast_cmov
5241         ;;
5242     esac
5243
5244 fi
5245
5246 if [ "$cpu" != generic ]; then
5247     add_cflags  $cpuflags
5248     add_asflags $cpuflags
5249     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
5250 fi
5251
5252 # compiler sanity check
5253 test_exec <<EOF
5254 int main(void){ return 0; }
5255 EOF
5256 if test "$?" != 0; then
5257     echo "$cc is unable to create an executable file."
5258     if test -z "$cross_prefix" && ! enabled cross_compile ; then
5259         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
5260         echo "Only do this if you know what cross compiling means."
5261     fi
5262     die "C compiler test failed."
5263 fi
5264
5265 add_cppflags -D_ISOC99_SOURCE
5266 add_cxxflags -D__STDC_CONSTANT_MACROS
5267 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
5268
5269 # some compilers silently accept -std=c11, so we also need to check that the
5270 # version macro is defined properly
5271 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
5272     add_cflags -std=c11 ||
5273     check_cflags -std=c99
5274
5275 check_cppflags -D_FILE_OFFSET_BITS=64
5276 check_cppflags -D_LARGEFILE_SOURCE
5277
5278 add_host_cppflags -D_ISOC99_SOURCE
5279 check_host_cflags -std=c99
5280 check_host_cflags -Wall
5281 check_host_cflags $host_cflags_speed
5282
5283 check_64bit(){
5284     arch32=$1
5285     arch64=$2
5286     expr=${3:-'sizeof(void *) > 4'}
5287     test_code cc "" "int test[2*($expr) - 1]" &&
5288         subarch=$arch64 || subarch=$arch32
5289     enable $subarch
5290 }
5291
5292 case "$arch" in
5293     aarch64|alpha|ia64)
5294         enabled shared && enable_weak pic
5295     ;;
5296     mips)
5297         check_64bit mips mips64 '_MIPS_SIM > 1'
5298         enabled shared && enable_weak pic
5299     ;;
5300     parisc)
5301         check_64bit parisc parisc64
5302         enabled shared && enable_weak pic
5303     ;;
5304     ppc)
5305         check_64bit ppc ppc64
5306         enabled shared && enable_weak pic
5307     ;;
5308     s390)
5309         check_64bit s390 s390x
5310         enabled shared && enable_weak pic
5311     ;;
5312     sparc)
5313         check_64bit sparc sparc64
5314         enabled shared && enable_weak pic
5315     ;;
5316     x86)
5317         check_64bit x86_32 x86_64
5318         # Treat x32 as x64 for now. Note it also needs pic if shared
5319         test "$subarch" = "x86_32" && test_cpp_condition stddef.h 'defined(__x86_64__)' &&
5320             subarch=x86_64 && enable x86_64 && disable x86_32
5321         if enabled x86_64; then
5322             enabled shared && enable_weak pic
5323             objformat=elf64
5324         fi
5325     ;;
5326 esac
5327
5328 # OS specific
5329 case $target_os in
5330     aix)
5331         SHFLAGS=-shared
5332         add_cppflags '-I\$(SRC_PATH)/compat/aix'
5333         enabled shared && add_ldflags -Wl,-brtl
5334         arflags='-Xany -r -c'
5335         striptype=""
5336         ;;
5337     android)
5338         disable symver
5339         enable section_data_rel_ro
5340         add_cflags -fPIE
5341         add_ldexeflags -fPIE -pie
5342         SLIB_INSTALL_NAME='$(SLIBNAME)'
5343         SLIB_INSTALL_LINKS=
5344         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
5345         ;;
5346     haiku)
5347         prefix_default="/boot/common"
5348         network_extralibs="-lnetwork"
5349         host_extralibs=
5350         ;;
5351     sunos)
5352         SHFLAGS='-shared -Wl,-h,$$(@F)'
5353         enabled x86 && append SHFLAGS -mimpure-text
5354         network_extralibs="-lsocket -lnsl"
5355         add_cppflags -D__EXTENSIONS__
5356         # When using suncc to build, the Solaris linker will mark
5357         # an executable with each instruction set encountered by
5358         # the Solaris assembler.  As our libraries contain their own
5359         # guards for processor-specific code, instead suppress
5360         # generation of the HWCAPS ELF section on Solaris x86 only.
5361         enabled_all suncc x86 &&
5362             echo "hwcap_1 = OVERRIDE;" > mapfile &&
5363             add_ldflags -Wl,-M,mapfile
5364         nm_default='nm -P -g'
5365         striptype=""
5366         version_script='-M'
5367         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
5368         ;;
5369     netbsd)
5370         disable symver
5371         oss_indev_extralibs="-lossaudio"
5372         oss_outdev_extralibs="-lossaudio"
5373         enabled gcc || check_ldflags -Wl,-zmuldefs
5374         ;;
5375     openbsd|bitrig)
5376         disable symver
5377         enable section_data_rel_ro
5378         striptype=""
5379         SHFLAGS='-shared'
5380         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
5381         SLIB_INSTALL_LINKS=
5382         oss_indev_extralibs="-lossaudio"
5383         oss_outdev_extralibs="-lossaudio"
5384         ;;
5385     dragonfly)
5386         disable symver
5387         ;;
5388     freebsd)
5389         ;;
5390     bsd/os)
5391         add_extralibs -lpoll -lgnugetopt
5392         strip="strip -d"
5393         ;;
5394     darwin)
5395         enabled ppc && add_asflags -force_cpusubtype_ALL
5396         install_name_dir_default='$(SHLIBDIR)'
5397         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
5398         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
5399         strip="${strip} -x"
5400         add_ldflags -Wl,-dynamic,-search_paths_first
5401         check_cflags -Werror=partial-availability
5402         SLIBSUF=".dylib"
5403         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
5404         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
5405         enabled x86_64 && objformat="macho64" || objformat="macho32"
5406         enabled_any pic shared x86_64 ||
5407             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
5408         check_headers dispatch/dispatch.h &&
5409             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
5410         if test -n "$sysroot"; then
5411             is_in -isysroot $cc $CPPFLAGS $CFLAGS || check_cppflags -isysroot $sysroot
5412             is_in -isysroot $ld $LDFLAGS          || check_ldflags  -isysroot $sysroot
5413         fi
5414         version_script='-exported_symbols_list'
5415         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
5416         # Workaround for Xcode 11 -fstack-check bug
5417         if enabled clang; then
5418             clang_version=$($cc -dumpversion)
5419             test ${clang_version%%.*} -eq 11 && add_cflags -fno-stack-check
5420         fi
5421         ;;
5422     msys*)
5423         die "Native MSYS builds are discouraged, please use the MINGW environment."
5424         ;;
5425     mingw32*|mingw64*)
5426         target_os=mingw32
5427         LIBTARGET=i386
5428         if enabled x86_64; then
5429             LIBTARGET="i386:x86-64"
5430         elif enabled arm; then
5431             LIBTARGET="arm"
5432         elif enabled aarch64; then
5433             LIBTARGET="arm64"
5434         fi
5435         if enabled shared; then
5436             # Cannot build both shared and static libs when using dllimport.
5437             disable static
5438         fi
5439         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5440         enabled x86_32 && check_ldflags -Wl,--large-address-aware
5441         shlibdir_default="$bindir_default"
5442         SLIBPREF=""
5443         SLIBSUF=".dll"
5444         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5445         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5446         if test_cmd lib.exe -list; then
5447             SLIB_EXTRA_CMD=-'lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5448             if enabled x86_64; then
5449                 LIBTARGET=x64
5450             fi
5451         else
5452             SLIB_EXTRA_CMD=-'$(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
5453         fi
5454         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5455         SLIB_INSTALL_LINKS=
5456         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5457         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5458         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" AR="$(AR_CMD)" NM="$(NM_CMD)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5459         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--disable-auto-image-base $$(@:$(SLIBSUF)=.def)'
5460         enabled x86_64 && objformat="win64" || objformat="win32"
5461         dlltool="${cross_prefix}dlltool"
5462         ranlib=:
5463         enable dos_paths
5464         check_ldflags -Wl,--nxcompat,--dynamicbase
5465         # Lets work around some stupidity in binutils.
5466         # ld will strip relocations from executables even though we need them
5467         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
5468         # however ld then forgets what the entry point should be (oops) so we
5469         # have to manually (re)set it.
5470         if enabled x86_32; then
5471             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
5472         elif enabled x86_64; then
5473             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
5474             check_ldflags -Wl,--high-entropy-va # binutils 2.25
5475             # Set image base >4GB for extra entropy with HEASLR
5476             add_ldexeflags -Wl,--image-base,0x140000000
5477             append SHFLAGS -Wl,--image-base,0x180000000
5478         fi
5479         ;;
5480     win32|win64)
5481         disable symver
5482         if enabled shared; then
5483             # Link to the import library instead of the normal static library
5484             # for shared libs.
5485             LD_LIB='%.lib'
5486             # Cannot build both shared and static libs with MSVC or icl.
5487             disable static
5488         fi
5489         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
5490         shlibdir_default="$bindir_default"
5491         SLIBPREF=""
5492         SLIBSUF=".dll"
5493         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5494         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5495         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5496         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5497         SLIB_INSTALL_LINKS=
5498         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5499         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5500         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5501         enabled x86_64 && objformat="win64" || objformat="win32"
5502         ranlib=:
5503         enable dos_paths
5504         ;;
5505     cygwin*)
5506         target_os=cygwin
5507         shlibdir_default="$bindir_default"
5508         SLIBPREF="cyg"
5509         SLIBSUF=".dll"
5510         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5511         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5512         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5513         SLIB_INSTALL_LINKS=
5514         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
5515         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
5516         enabled x86_64 && objformat="win64" || objformat="win32"
5517         enable dos_paths
5518         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5519         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5520         ;;
5521     *-dos|freedos|opendos)
5522         network_extralibs="-lsocket"
5523         objformat="coff"
5524         enable dos_paths
5525         ;;
5526     linux)
5527         enable section_data_rel_ro
5528         enabled_any arm aarch64 && enable_weak linux_perf
5529         ;;
5530     irix*)
5531         target_os=irix
5532         ranlib="echo ignoring ranlib"
5533         ;;
5534     os/2*)
5535         strip="lxlite -CS"
5536         striptype=""
5537         objformat="aout"
5538         add_cppflags -D_GNU_SOURCE
5539         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
5540         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
5541         LIBSUF="_s.a"
5542         SLIBPREF=""
5543         SLIBSUF=".dll"
5544         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5545         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
5546         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
5547             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
5548             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
5549             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
5550             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
5551         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
5552             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
5553         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5554         SLIB_INSTALL_LINKS=
5555         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
5556         enable dos_paths
5557         enable_weak os2threads
5558         ;;
5559     gnu/kfreebsd)
5560         add_cppflags -D_BSD_SOURCE
5561         ;;
5562     gnu)
5563         ;;
5564     qnx)
5565         add_cppflags -D_QNX_SOURCE
5566         network_extralibs="-lsocket"
5567         ;;
5568     symbian)
5569         SLIBSUF=".dll"
5570         enable dos_paths
5571         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
5572         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
5573         add_ldflags -Wl,--target1-abs,--no-undefined \
5574                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
5575                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
5576         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
5577                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
5578                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
5579         ;;
5580     minix)
5581         ;;
5582     none)
5583         ;;
5584     *)
5585         die "Unknown OS '$target_os'."
5586         ;;
5587 esac
5588
5589 # test if creating links works
5590 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5591 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5592 mkdir "$link_dest"
5593 $ln_s "$link_dest" "$link_name"
5594 touch "$link_dest/test_file"
5595 if [ "$source_path" != "." ] && [ "$source_path" != "src" ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5596     # create link to source path
5597     [ -e src ] && rm src
5598     $ln_s "$source_path" src
5599     source_link=src
5600 else
5601     # creating directory links doesn't work
5602     # fall back to using the full source path
5603     source_link="$source_path"
5604 fi
5605 # cleanup
5606 rm -r "$link_dest"
5607 rm -r "$link_name"
5608
5609 # determine libc flavour
5610
5611 probe_libc(){
5612     pfx=$1
5613     pfx_no_=${pfx%_}
5614     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5615     if test_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5616         eval ${pfx}libc_type=uclibc
5617         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5618     elif test_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5619         eval ${pfx}libc_type=glibc
5620         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5621     # MinGW headers can be installed on Cygwin, so check for newlib first.
5622     elif test_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5623         eval ${pfx}libc_type=newlib
5624         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
5625     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5626     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5627         eval ${pfx}libc_type=mingw64
5628         if test_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5629             add_compat msvcrt/snprintf.o
5630             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5631         fi
5632         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5633         eval test \$${pfx_no_}cc_type = "gcc" &&
5634             add_${pfx}cppflags -D__printf__=__gnu_printf__
5635         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5636             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5637         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5638     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5639          test_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5640         eval ${pfx}libc_type=mingw32
5641         test_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5642             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5643             die "ERROR: MinGW32 runtime version must be >= 3.15."
5644         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5645         test_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
5646             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5647         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5648             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5649         eval test \$${pfx_no_}cc_type = "gcc" &&
5650             add_${pfx}cppflags -D__printf__=__gnu_printf__
5651         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5652     elif test_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5653         eval ${pfx}libc_type=msvcrt
5654         if test_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5655             if [ "$pfx" = host_ ]; then
5656                 add_host_cppflags -Dsnprintf=_snprintf
5657             else
5658                 add_compat strtod.o strtod=avpriv_strtod
5659                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5660                                              _snprintf=avpriv_snprintf  \
5661                                              vsnprintf=avpriv_vsnprintf
5662             fi
5663         fi
5664         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5665         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5666         # 0x601 by default unless something else is set by the user.
5667         # This can easily lead to us detecting functions only present
5668         # in such new versions and producing binaries requiring windows 7.0.
5669         # Therefore explicitly set the default to Vista unless the user has
5670         # set something else on the command line.
5671         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5672         # family. For these cases, configure is free to use any functions
5673         # found in the SDK headers by default. (Alternatively, we could force
5674         # _WIN32_WINNT to 0x0602 in that case.)
5675         test_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5676             { test_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0600; }
5677 #ifdef WINAPI_FAMILY
5678 #include <winapifamily.h>
5679 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5680 #error not desktop
5681 #endif
5682 #endif
5683 EOF
5684         if [ "$pfx" = "" ]; then
5685             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5686             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5687         fi
5688     elif test_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5689         eval ${pfx}libc_type=klibc
5690     elif test_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5691         eval ${pfx}libc_type=bionic
5692     elif test_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5693         eval ${pfx}libc_type=solaris
5694         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5695     elif test_${pfx}cpp_condition sys/version.h "defined __DJGPP__"; then
5696         eval ${pfx}libc_type=djgpp
5697         add_cppflags -U__STRICT_ANSI__
5698         add_cflags "-include $source_path/compat/djgpp/math.h"
5699         add_compat djgpp/math.o
5700     fi
5701     test_${pfx}cc <<EOF
5702 #include <time.h>
5703 void *v = localtime_r;
5704 EOF
5705 test "$?" != 0 && test_${pfx}cc -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 <<EOF && add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5706 #include <time.h>
5707 void *v = localtime_r;
5708 EOF
5709
5710     eval test -n "\${${pfx}libc_type}" && enable ${pfx}libc_${libc_type}
5711 }
5712
5713 probe_libc
5714 probe_libc host_
5715
5716 # hacks for compiler/libc/os combinations
5717
5718 case $libc_type in
5719     bionic)
5720         add_compat strtod.o strtod=avpriv_strtod
5721         ;;
5722 esac
5723
5724 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5725     add_cppflags '-I\$(SRC_PATH)/compat/float'
5726
5727 test_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5728
5729 set_default libdir
5730 : ${shlibdir_default:="$libdir"}
5731 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5732
5733 set_default $PATHS_LIST
5734 set_default nm
5735
5736 disabled optimizations || enabled ossfuzz || check_cflags -fomit-frame-pointer
5737
5738 enable_weak_pic() {
5739     disabled pic && return
5740     enable pic
5741     add_cppflags -DPIC
5742     case "$target_os" in
5743     mingw*|cygwin*|win*)
5744         ;;
5745     *)
5746         add_cflags -fPIC
5747         add_asflags -fPIC
5748         ;;
5749     esac
5750 }
5751
5752 enabled pic && enable_weak_pic
5753
5754 test_cc <<EOF || die "Symbol mangling check failed."
5755 int ff_extern;
5756 EOF
5757 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5758 extern_prefix=${sym%%ff_extern*}
5759
5760 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
5761
5762 for restrict_keyword in restrict __restrict__ __restrict ""; do
5763     test_code cc "" "char * $restrict_keyword p" && break
5764 done
5765
5766 check_cc pragma_deprecated "" '_Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"")'
5767
5768 # The global variable ensures the bits appear unchanged in the object file.
5769 test_cc <<EOF || die "endian test failed"
5770 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5771 EOF
5772 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5773
5774 check_cc const_nan math.h "struct { double d; } static const bar[] = { { NAN } }"
5775
5776 if ! enabled ppc64 || enabled bigendian; then
5777     disable vsx
5778 fi
5779
5780 check_gas() {
5781     log "check_gas using '$as' as AS"
5782     # :vararg is used on aarch64, arm and ppc altivec
5783     check_as vararg "
5784 .macro m n, y:vararg=0
5785 \n: .int \y
5786 .endm
5787 m x" || return 1
5788     # .altmacro is only used in arm asm
5789     ! enabled arm || check_as gnu_as ".altmacro"
5790 }
5791
5792 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5793     nogas=:
5794     enabled_any arm aarch64 && nogas=die
5795     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5796     as_noop=-v
5797
5798     case $as_type in
5799         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5800         gcc)  gaspp_as_type=gas ;;
5801         *)    gaspp_as_type=$as_type ;;
5802     esac
5803
5804     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5805
5806     test "${as#*gas-preprocessor.pl}" != "$as" ||
5807     test_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5808         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5809
5810     if ! check_gas ; then
5811         as=${gas:=$as}
5812         check_gas || \
5813             $nogas "GNU assembler not found, install/update gas-preprocessor"
5814     fi
5815
5816     check_as as_func ".func test
5817                       .endfunc"
5818 fi
5819
5820 check_inline_asm inline_asm_labels '"1:\n"'
5821
5822 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5823
5824 if enabled aarch64; then
5825     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5826     # internal assembler in clang 3.3 does not support this instruction
5827     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5828     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5829
5830     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5831
5832 elif enabled alpha; then
5833
5834     check_cflags -mieee
5835
5836 elif enabled arm; then
5837
5838     enabled msvc && check_cpp_condition thumb stddef.h "defined _M_ARMT"
5839     test_cpp_condition stddef.h "defined __thumb__" && test_cc <<EOF && enable_weak thumb
5840 float func(float a, float b){ return a+b; }
5841 EOF
5842     enabled thumb && check_cflags -mthumb || check_cflags -marm
5843
5844     if check_cpp_condition vfp_args stddef.h "defined __ARM_PCS_VFP"; then
5845         :
5846     elif check_cpp_condition vfp_args stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5847         :
5848     elif ! test_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5849         case "${cross_prefix:-$cc}" in
5850             *hardfloat*) enable vfp_args; fpabi=vfp ;;
5851             *) check_ld "cc" vfp_args <<EOF && fpabi=vfp || fpabi=soft ;;
5852 __asm__ (".eabi_attribute 28, 1");
5853 int main(void) { return 0; }
5854 EOF
5855         esac
5856         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5857     fi
5858
5859     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5860     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5861     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5862     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5863     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5864     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5865     enabled setend  && check_insn setend  'setend be'
5866
5867     [ $target_os = linux ] || [ $target_os = android ] ||
5868         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5869             $ARCH_EXT_LIST_ARM
5870
5871     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5872
5873     check_as as_arch_directive ".arch armv7-a"
5874     check_as as_dn_directive   "ra .dn d0.i16"
5875     check_as as_fpu_directive  ".fpu neon"
5876
5877     # llvm's integrated assembler supports .object_arch from llvm 3.5
5878     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
5879         check_as as_object_arch ".object_arch armv4"
5880
5881     # MS armasm fails to assemble our PIC constructs
5882     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5883
5884 elif enabled mips; then
5885
5886     # Check toolchain ISA level
5887     if enabled mips64; then
5888         enabled mips64r6 && check_inline_asm mips64r6 '"dlsa $0, $0, $0, 1"' &&
5889             disable mips64r2
5890
5891         enabled mips64r2 && check_inline_asm mips64r2 '"dext $0, $0, 0, 1"'
5892
5893         disable mips32r6 && disable mips32r5 && disable mips32r2
5894     else
5895         enabled mips32r6 && check_inline_asm mips32r6 '"aui $0, $0, 0"' &&
5896             disable mips32r5 && disable mips32r2
5897
5898         enabled mips32r5 && check_inline_asm mips32r5 '"eretnc"'
5899         enabled mips32r2 && check_inline_asm mips32r2 '"ext $0, $0, 0, 1"'
5900
5901         disable mips64r6 && disable mips64r5 && disable mips64r2
5902     fi
5903
5904     enabled mipsfpu && check_inline_asm mipsfpu '"cvt.d.l $f0, $f2"'
5905     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5906
5907     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5908     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5909
5910     # MSA and MSA2 can be detected at runtime so we supply extra flags here
5911     enabled mipsfpu && enabled msa && check_inline_asm msa '"addvi.b $w0, $w1, 1"' '-mmsa' && append MSAFLAGS '-mmsa'
5912     enabled msa && enabled msa2 && check_inline_asm msa2 '"nxbits.any.b $w0, $w0"' '-mmsa2' && append MSAFLAGS '-mmsa2'
5913
5914     # loongson2 have no switch cflag so we can only probe toolchain ability
5915     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"' && disable loongson3
5916
5917     # loongson3 is paired with MMI
5918     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"' '-mloongson-ext' && append MMIFLAGS '-mloongson-ext'
5919
5920     # MMI can be detected at runtime too
5921     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"' '-mloongson-mmi' && append MMIFLAGS '-mloongson-mmi'
5922
5923     if enabled bigendian && enabled msa; then
5924         disable msa
5925     fi
5926
5927 elif enabled parisc; then
5928
5929     if enabled gcc; then
5930         case $($cc -dumpversion) in
5931             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5932         esac
5933     fi
5934
5935 elif enabled ppc; then
5936
5937     enable local_aligned
5938
5939     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5940     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5941     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5942     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5943
5944     if enabled altivec; then
5945         check_cflags -maltivec -mabi=altivec
5946
5947         # check if our compiler supports Motorola AltiVec C API
5948         check_cc altivec altivec.h "vector signed int v1 = (vector signed int) { 0 };
5949                                     vector signed int v2 = (vector signed int) { 1 };
5950                                     v1 = vec_add(v1, v2);"
5951
5952         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5953     fi
5954
5955     if enabled vsx; then
5956         check_cflags -mvsx &&
5957         check_cc vsx altivec.h "int v[4] = { 0 };
5958                                 vector signed int v1 = vec_vsx_ld(0, v);"
5959     fi
5960
5961     if enabled power8; then
5962         check_cpp_condition power8 "altivec.h" "defined(_ARCH_PWR8)"
5963     fi
5964
5965 elif enabled x86; then
5966
5967     check_builtin rdtsc    intrin.h   "__rdtsc()"
5968     check_builtin mm_empty mmintrin.h "_mm_empty()"
5969
5970     enable local_aligned
5971
5972     # check whether EBP is available on x86
5973     # As 'i' is stored on the stack, this program will crash
5974     # if the base pointer is used to access it because the
5975     # base pointer is cleared in the inline assembly code.
5976     check_exec_crash <<EOF && enable ebp_available
5977 volatile int i=0;
5978 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5979 return i;
5980 EOF
5981
5982     # check whether EBX is available on x86
5983     check_inline_asm ebx_available '""::"b"(0)' &&
5984         check_inline_asm ebx_available '"":::"%ebx"'
5985
5986     # check whether xmm clobbers are supported
5987     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5988
5989     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5990         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5991
5992     # check whether binutils is new enough to compile SSSE3/MMXEXT
5993     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5994     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5995
5996     probe_x86asm(){
5997         x86asmexe_probe=$1
5998         if test_cmd $x86asmexe_probe -v; then
5999             x86asmexe=$x86asmexe_probe
6000             x86asm_type=nasm
6001             x86asm_debug="-g -F dwarf"
6002             X86ASMDEP=
6003             X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
6004         elif test_cmd $x86asmexe_probe --version; then
6005             x86asmexe=$x86asmexe_probe
6006             x86asm_type=yasm
6007             x86asm_debug="-g dwarf2"
6008             X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
6009             X86ASM_DEPFLAGS=
6010         fi
6011         check_x86asm x86asm "movbe ecx, [5]"
6012     }
6013
6014     if ! disabled_any asm mmx x86asm; then
6015         disable x86asm
6016         for program in $x86asmexe nasm yasm; do
6017             probe_x86asm $program && break
6018         done
6019         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
6020         X86ASMFLAGS="-f $objformat"
6021         enabled pic               && append X86ASMFLAGS "-DPIC"
6022         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
6023         case "$objformat" in
6024             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
6025         esac
6026
6027         enabled avx512 && check_x86asm avx512_external "vmovdqa32 [eax]{k1}{z}, zmm0"
6028         enabled avx2   && check_x86asm avx2_external   "vextracti128 xmm0, ymm0, 0"
6029         enabled xop    && check_x86asm xop_external    "vpmacsdd xmm0, xmm1, xmm2, xmm3"
6030         enabled fma4   && check_x86asm fma4_external   "vfmaddps ymm0, ymm1, ymm2, ymm3"
6031         check_x86asm cpunop          "CPU amdnop"
6032     fi
6033
6034     case "$cpu" in
6035         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
6036             disable fast_clz
6037         ;;
6038     esac
6039
6040 fi
6041
6042 check_cc intrinsics_neon arm_neon.h "int16x8_t test = vdupq_n_s16(0)"
6043
6044 check_ldflags -Wl,--as-needed
6045 check_ldflags -Wl,-z,noexecstack
6046
6047 if ! disabled network; then
6048     check_func getaddrinfo $network_extralibs
6049     check_func inet_aton $network_extralibs
6050
6051     check_type netdb.h "struct addrinfo"
6052     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
6053     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
6054     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
6055     check_type poll.h "struct pollfd"
6056     check_type netinet/sctp.h "struct sctp_event_subscribe"
6057     check_struct "sys/socket.h" "struct msghdr" msg_flags
6058     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
6059     check_type netinet/in.h "struct sockaddr_in6"
6060     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
6061     check_type "sys/types.h sys/socket.h" socklen_t
6062
6063     # Prefer arpa/inet.h over winsock2
6064     if check_headers arpa/inet.h ; then
6065         check_func closesocket
6066     elif check_headers winsock2.h ; then
6067         check_func_headers winsock2.h closesocket -lws2 &&
6068             network_extralibs="-lws2" ||
6069         { check_func_headers winsock2.h closesocket -lws2_32 &&
6070             network_extralibs="-lws2_32"; } || disable winsock2_h network
6071         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
6072
6073         check_type ws2tcpip.h socklen_t
6074         check_type ws2tcpip.h "struct addrinfo"
6075         check_type ws2tcpip.h "struct group_source_req"
6076         check_type ws2tcpip.h "struct ip_mreq_source"
6077         check_type ws2tcpip.h "struct ipv6_mreq"
6078         check_type winsock2.h "struct pollfd"
6079         check_struct winsock2.h "struct sockaddr" sa_len
6080         check_type ws2tcpip.h "struct sockaddr_in6"
6081         check_type ws2tcpip.h "struct sockaddr_storage"
6082     else
6083         disable network
6084     fi
6085 fi
6086
6087 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
6088 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
6089 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
6090 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
6091 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
6092 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
6093 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
6094
6095 case "$custom_allocator" in
6096     jemalloc)
6097         # jemalloc by default does not use a prefix
6098         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
6099     ;;
6100     tcmalloc)
6101         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
6102         malloc_prefix=tc_
6103     ;;
6104 esac
6105
6106 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
6107 check_func  ${malloc_prefix}memalign            && enable memalign
6108 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
6109
6110 check_func  access
6111 check_func_headers stdlib.h arc4random
6112 check_lib   clock_gettime time.h clock_gettime || check_lib clock_gettime time.h clock_gettime -lrt
6113 check_func  fcntl
6114 check_func  fork
6115 check_func  gethrtime
6116 check_func  getopt
6117 check_func  getrusage
6118 check_func  gettimeofday
6119 check_func  isatty
6120 check_func  mkstemp
6121 check_func  mmap
6122 check_func  mprotect
6123 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
6124 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
6125 check_func  sched_getaffinity
6126 check_func  setrlimit
6127 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
6128 check_func  strerror_r
6129 check_func  sysconf
6130 check_func  sysctl
6131 check_func  usleep
6132
6133 check_func_headers conio.h kbhit
6134 check_func_headers io.h setmode
6135 check_func_headers lzo/lzo1x.h lzo1x_999_compress
6136 check_func_headers mach/mach_time.h mach_absolute_time
6137 check_func_headers stdlib.h getenv
6138 check_func_headers sys/stat.h lstat
6139
6140 check_func_headers windows.h GetModuleHandle
6141 check_func_headers windows.h GetProcessAffinityMask
6142 check_func_headers windows.h GetProcessTimes
6143 check_func_headers windows.h GetStdHandle
6144 check_func_headers windows.h GetSystemTimeAsFileTime
6145 check_func_headers windows.h LoadLibrary
6146 check_func_headers windows.h MapViewOfFile
6147 check_func_headers windows.h PeekNamedPipe
6148 check_func_headers windows.h SetConsoleTextAttribute
6149 check_func_headers windows.h SetConsoleCtrlHandler
6150 check_func_headers windows.h SetDllDirectory
6151 check_func_headers windows.h Sleep
6152 check_func_headers windows.h VirtualAlloc
6153 check_func_headers glob.h glob
6154 enabled xlib &&
6155     check_lib xlib "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
6156
6157 check_headers direct.h
6158 check_headers dirent.h
6159 check_headers dxgidebug.h
6160 check_headers dxva.h
6161 check_headers dxva2api.h -D_WIN32_WINNT=0x0600
6162 check_headers io.h
6163 enabled libdrm &&
6164     check_headers linux/dma-buf.h
6165
6166 check_headers linux/perf_event.h
6167 check_headers libcrystalhd/libcrystalhd_if.h
6168 check_headers malloc.h
6169 check_headers mftransform.h
6170 check_headers net/udplite.h
6171 check_headers poll.h
6172 check_headers sys/param.h
6173 check_headers sys/resource.h
6174 check_headers sys/select.h
6175 check_headers sys/time.h
6176 check_headers sys/un.h
6177 check_headers termios.h
6178 check_headers unistd.h
6179 check_headers valgrind/valgrind.h
6180 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
6181 check_headers windows.h
6182 check_headers X11/extensions/XvMClib.h
6183 check_headers asm/types.h
6184
6185 # it seems there are versions of clang in some distros that try to use the
6186 # gcc headers, which explodes for stdatomic
6187 # so we also check that atomics actually work here
6188 check_builtin stdatomic stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0); foo += bar"
6189
6190 check_lib advapi32 "windows.h"            RegCloseKey          -ladvapi32
6191 check_lib bcrypt   "windows.h bcrypt.h"   BCryptGenRandom      -lbcrypt &&
6192     check_cpp_condition bcrypt bcrypt.h "defined BCRYPT_RNG_ALGORITHM"
6193 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
6194 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
6195 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
6196
6197 check_lib android android/native_window.h ANativeWindow_acquire -landroid
6198 check_lib mediandk "stdint.h media/NdkImage.h" AImage_delete -lmediandk
6199 check_lib camera2ndk "stdbool.h stdint.h camera/NdkCameraManager.h" ACameraManager_create -lcamera2ndk
6200
6201 enabled appkit       && check_apple_framework AppKit
6202 enabled audiotoolbox && check_apple_framework AudioToolbox
6203 enabled avfoundation && check_apple_framework AVFoundation
6204 enabled coreimage    && check_apple_framework CoreImage
6205 enabled videotoolbox && check_apple_framework VideoToolbox
6206
6207 check_apple_framework CoreFoundation
6208 check_apple_framework CoreMedia
6209 check_apple_framework CoreVideo
6210 check_apple_framework CoreAudio
6211
6212 enabled avfoundation && {
6213     disable coregraphics applicationservices
6214     check_lib coregraphics        CoreGraphics/CoreGraphics.h               CGGetActiveDisplayList "-framework CoreGraphics" ||
6215     check_lib applicationservices ApplicationServices/ApplicationServices.h CGGetActiveDisplayList "-framework ApplicationServices"; }
6216
6217 enabled videotoolbox && {
6218     check_lib coreservices CoreServices/CoreServices.h UTGetOSTypeFromString "-framework CoreServices"
6219     check_func_headers CoreMedia/CMFormatDescription.h kCMVideoCodecType_HEVC "-framework CoreMedia"
6220     check_func_headers CoreMedia/CMFormatDescription.h kCMVideoCodecType_HEVCWithAlpha "-framework CoreMedia"
6221     check_func_headers CoreVideo/CVPixelBuffer.h kCVPixelFormatType_420YpCbCr10BiPlanarVideoRange "-framework CoreVideo"
6222     check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferTransferFunction_SMPTE_ST_2084_PQ "-framework CoreVideo"
6223     check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferTransferFunction_ITU_R_2100_HLG "-framework CoreVideo"
6224     check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferTransferFunction_Linear "-framework CoreVideo"
6225 }
6226
6227 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
6228
6229 check_type "windows.h dxva.h" "DXVA_PicParams_AV1" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
6230 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
6231 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
6232 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
6233 check_type "windows.h d3d11.h" "ID3D11VideoContext"
6234 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
6235 check_func_headers mfapi.h MFCreateAlignedMemoryBuffer -lmfplat
6236
6237 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
6238 check_type "vdpau/vdpau.h" "VdpPictureInfoVP9"
6239
6240 if [ -z "$nvccflags" ]; then
6241     nvccflags=$nvccflags_default
6242 fi
6243
6244 if enabled x86_64 || enabled ppc64 || enabled aarch64; then
6245     nvccflags="$nvccflags -m64"
6246 else
6247     nvccflags="$nvccflags -m32"
6248 fi
6249
6250 if enabled cuda_nvcc; then
6251     nvccflags="$nvccflags -ptx"
6252 else
6253     nvccflags="$nvccflags -S -nocudalib -nocudainc --cuda-device-only -Wno-c++11-narrowing -include ${source_link}/compat/cuda/cuda_runtime.h"
6254     check_nvcc cuda_llvm
6255 fi
6256
6257 if ! disabled ffnvcodec; then
6258     ffnv_hdr_list="ffnvcodec/nvEncodeAPI.h ffnvcodec/dynlink_cuda.h ffnvcodec/dynlink_cuviddec.h ffnvcodec/dynlink_nvcuvid.h"
6259     check_pkg_config ffnvcodec "ffnvcodec >= 9.1.23.1" "$ffnv_hdr_list" "" || \
6260       check_pkg_config ffnvcodec "ffnvcodec >= 9.0.18.3 ffnvcodec < 9.1" "$ffnv_hdr_list" "" || \
6261       check_pkg_config ffnvcodec "ffnvcodec >= 8.2.15.10 ffnvcodec < 8.3" "$ffnv_hdr_list" "" || \
6262       check_pkg_config ffnvcodec "ffnvcodec >= 8.1.24.11 ffnvcodec < 8.2" "$ffnv_hdr_list" ""
6263 fi
6264
6265 check_cpp_condition winrt windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)"
6266
6267 if ! disabled w32threads && ! enabled pthreads; then
6268     check_func_headers "windows.h process.h" _beginthreadex &&
6269         check_type "windows.h" CONDITION_VARIABLE &&
6270         check_type "windows.h" INIT_ONCE &&
6271         enable w32threads || disable w32threads
6272     if ! enabled w32threads && enabled winrt; then
6273         check_func_headers "windows.h" CreateThread &&
6274             enable w32threads || disable w32threads
6275     fi
6276 fi
6277
6278 # check for some common methods of building with pthread support
6279 # do this before the optional library checks as some of them require pthreads
6280 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
6281     if check_lib pthreads pthread.h pthread_join   -pthread &&
6282        check_lib pthreads pthread.h pthread_create -pthread; then
6283         add_cflags -pthread
6284     elif check_lib pthreads pthread.h pthread_join   -pthreads &&
6285          check_lib pthreads pthread.h pthread_create -pthreads; then
6286         add_cflags -pthreads
6287     elif check_lib pthreads pthread.h pthread_join   -ldl -pthread &&
6288          check_lib pthreads pthread.h pthread_create -ldl -pthread; then
6289         add_cflags -ldl -pthread
6290     elif check_lib pthreads pthread.h pthread_join   -lpthreadGC2 &&
6291          check_lib pthreads pthread.h pthread_create -lpthreadGC2; then
6292         :
6293     elif check_lib pthreads pthread.h pthread_join   -lpthread &&
6294          check_lib pthreads pthread.h pthread_create -lpthread; then
6295         :
6296     elif check_func pthread_join && check_func pthread_create; then
6297         enable pthreads
6298     fi
6299     check_cc pthreads "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER"
6300
6301     if enabled pthreads; then
6302         check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
6303         check_func pthread_cancel $pthreads_extralibs
6304     fi
6305 fi
6306
6307 enabled  zlib && { check_pkg_config zlib zlib "zlib.h" zlibVersion ||
6308                    check_lib zlib   zlib.h      zlibVersion    -lz; }
6309 enabled bzlib && check_lib bzlib bzlib.h BZ2_bzlibVersion    -lbz2
6310 enabled  lzma && check_lib lzma   lzma.h lzma_version_number -llzma
6311
6312 # On some systems dynamic loading requires no extra linker flags
6313 check_lib libdl dlfcn.h "dlopen dlsym" || check_lib libdl dlfcn.h "dlopen dlsym" -ldl
6314
6315 check_lib libm math.h sin -lm
6316
6317 atan2f_args=2
6318 copysign_args=2
6319 hypot_args=2
6320 ldexpf_args=2
6321 powf_args=2
6322
6323 for func in $MATH_FUNCS; do
6324     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
6325 done
6326
6327 for func in $COMPLEX_FUNCS; do
6328     eval check_complexfunc $func \${${func}_args:-1}
6329 done
6330
6331 # these are off by default, so fail if requested and not available
6332 enabled avisynth          && require_headers "avisynth/avisynth_c.h"
6333 enabled cuda_nvcc         && { check_nvcc cuda_nvcc || die "ERROR: failed checking for nvcc."; }
6334 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
6335 enabled decklink          && { require_headers DeckLinkAPI.h &&
6336                                { test_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a0a0000" || die "ERROR: Decklink API version must be >= 10.10"; } }
6337 enabled frei0r            && require_headers "frei0r.h dlfcn.h"
6338 enabled gmp               && require gmp gmp.h mpz_export -lgmp
6339 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init
6340 enabled jni               && { [ $target_os = "android" ] && check_headers jni.h && enabled pthreads || die "ERROR: jni not found"; }
6341 enabled ladspa            && require_headers "ladspa.h dlfcn.h"
6342 enabled libaom            && require_pkg_config libaom "aom >= 1.0.0" aom/aom_codec.h aom_codec_version
6343 enabled libaribb24        && { check_pkg_config libaribb24 "aribb24 > 1.0.3" "aribb24/aribb24.h" arib_instance_new ||
6344                                { enabled gpl && require_pkg_config libaribb24 aribb24 "aribb24/aribb24.h" arib_instance_new; } ||
6345                                die "ERROR: libaribb24 requires version higher than 1.0.3 or --enable-gpl."; }
6346 enabled lv2               && require_pkg_config lv2 lilv-0 "lilv/lilv.h" lilv_world_new
6347 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
6348 enabled libass            && require_pkg_config libass libass ass/ass.h ass_library_init
6349 enabled libbluray         && require_pkg_config libbluray libbluray libbluray/bluray.h bd_open
6350 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
6351 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
6352                              { check_lib libcelt celt/celt.h celt_decoder_create_custom -lcelt0 ||
6353                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
6354 enabled libcaca           && require_pkg_config libcaca caca caca.h caca_create_canvas
6355 enabled libcodec2         && require libcodec2 codec2/codec2.h codec2_create -lcodec2
6356 enabled libdav1d          && require_pkg_config libdav1d "dav1d >= 0.5.0" "dav1d/dav1d.h" dav1d_version
6357 enabled libdavs2          && require_pkg_config libdavs2 "davs2 >= 1.6.0" davs2.h davs2_decoder_open
6358 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
6359 enabled libdrm            && require_pkg_config libdrm libdrm xf86drm.h drmGetVersion
6360 enabled libfdk_aac        && { check_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
6361                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
6362                                  warn "using libfdk without pkg-config"; } }
6363 flite_extralibs="-lflite_cmu_time_awb -lflite_cmu_us_awb -lflite_cmu_us_kal -lflite_cmu_us_kal16 -lflite_cmu_us_rms -lflite_cmu_us_slt -lflite_usenglish -lflite_cmulex -lflite"
6364 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_extralibs
6365 enabled fontconfig        && enable libfontconfig
6366 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
6367 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
6368 enabled libfribidi        && require_pkg_config libfribidi fribidi fribidi.h fribidi_version_info
6369 enabled libglslang        && require_cpp libglslang glslang/SPIRV/GlslangToSpv.h "glslang::TIntermediate*" -lglslang -lMachineIndependent -lOSDependent -lHLSL -lOGLCompiler -lGenericCodeGen -lSPVRemapper -lSPIRV -lSPIRV-Tools-opt -lSPIRV-Tools -lpthread -lstdc++
6370 enabled libgme            && { check_pkg_config libgme libgme gme/gme.h gme_new_emu ||
6371                                require libgme gme/gme.h gme_new_emu -lgme -lstdc++; }
6372 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
6373                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
6374                                done || die "ERROR: libgsm not found"; }
6375 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc $pthreads_extralibs
6376 enabled libklvanc         && require libklvanc libklvanc/vanc.h klvanc_context_create -lklvanc
6377 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
6378 enabled liblensfun        && require_pkg_config liblensfun lensfun lensfun.h lf_db_new
6379 # While it may appear that require is being used as a pkg-config
6380 # fallback for libmfx, it is actually being used to detect a different
6381 # installation route altogether.  If libmfx is installed via the Intel
6382 # Media SDK or Intel Media Server Studio, these don't come with
6383 # pkg-config support.  Instead, users should make sure that the build
6384 # can find the libraries and headers through other means.
6385 enabled libmfx            && { check_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit ||
6386                                { require libmfx "mfx/mfxvideo.h" MFXInit "-llibmfx $advapi32_extralibs" && warn "using libmfx without pkg-config"; } }
6387 if enabled libmfx; then
6388    check_cc MFX_CODEC_VP9 "mfx/mfxvp9.h mfx/mfxstructures.h" "MFX_CODEC_VP9"
6389 fi
6390
6391 enabled libmodplug        && require_pkg_config libmodplug libmodplug libmodplug/modplug.h ModPlug_Load
6392 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame $libm_extralibs
6393 enabled libmysofa         && { check_pkg_config libmysofa libmysofa mysofa.h mysofa_neighborhood_init_withstepdefine ||
6394                                require libmysofa mysofa.h mysofa_neighborhood_init_withstepdefine -lmysofa $zlib_extralibs; }
6395 enabled libnpp            && { check_lib libnpp npp.h nppGetLibVersion -lnppig -lnppicc -lnppc -lnppidei ||
6396                                check_lib libnpp npp.h nppGetLibVersion -lnppi -lnppc -lnppidei ||
6397                                die "ERROR: libnpp not found"; }
6398 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
6399 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
6400 enabled libopencv         && { check_headers opencv2/core/core_c.h &&
6401                                { check_pkg_config libopencv opencv opencv2/core/core_c.h cvCreateImageHeader ||
6402                                  require libopencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
6403                                require_pkg_config libopencv opencv opencv/cxcore.h cvCreateImageHeader; }
6404 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
6405 enabled libopenjpeg       && { check_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version ||
6406                                { require_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } }
6407 enabled libopenmpt        && require_pkg_config libopenmpt "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create -lstdc++ && append libopenmpt_extralibs "-lstdc++"
6408 enabled libopenvino       && require libopenvino c_api/ie_c_api.h ie_c_api_version -linference_engine_c_api
6409 enabled libopus           && {
6410     enabled libopus_decoder && {
6411         require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
6412     }
6413     enabled libopus_encoder && {
6414         require_pkg_config libopus opus opus_multistream.h opus_multistream_surround_encoder_create
6415     }
6416 }
6417 enabled libpulse          && require_pkg_config libpulse libpulse pulse/pulseaudio.h pa_context_new
6418 enabled librabbitmq       && require_pkg_config librabbitmq "librabbitmq >= 0.7.1" amqp.h amqp_new_connection
6419 enabled librav1e          && require_pkg_config librav1e "rav1e >= 0.4.0" rav1e.h rav1e_context_new
6420 enabled librist           && require_pkg_config librist "librist >= 0.2" librist/librist.h rist_receiver_create
6421 enabled librsvg           && require_pkg_config librsvg librsvg-2.0 librsvg-2.0/librsvg/rsvg.h rsvg_handle_render_cairo
6422 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
6423 enabled librubberband     && require_pkg_config librubberband "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new -lstdc++ && append librubberband_extralibs "-lstdc++"
6424 enabled libshine          && require_pkg_config libshine shine shine/layer3.h shine_encode_buffer
6425 enabled libsmbclient      && { check_pkg_config libsmbclient smbclient libsmbclient.h smbc_init ||
6426                                require libsmbclient libsmbclient.h smbc_init -lsmbclient; }
6427 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy -lstdc++
6428 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
6429 enabled libssh            && require_pkg_config libssh libssh libssh/sftp.h sftp_init
6430 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init
6431 enabled libsrt            && require_pkg_config libsrt "srt >= 1.3.0" srt/srt.h srt_socket
6432 enabled libsvtav1         && require_pkg_config libsvtav1 "SvtAv1Enc >= 0.8.4" EbSvtAv1Enc.h svt_av1_enc_init_handle
6433 enabled libtensorflow     && require libtensorflow tensorflow/c/c_api.h TF_Version -ltensorflow
6434 enabled libtesseract      && require_pkg_config libtesseract tesseract tesseract/capi.h TessBaseAPICreate
6435 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
6436 enabled libtls            && require_pkg_config libtls libtls tls.h tls_configure
6437 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
6438                              { check_lib libtwolame twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
6439                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
6440 enabled libuavs3d         && require_pkg_config libuavs3d "uavs3d >= 1.1.41" uavs3d.h uavs3d_decode
6441 enabled libv4l2           && require_pkg_config libv4l2 libv4l2 libv4l2.h v4l2_ioctl
6442 enabled libvidstab        && require_pkg_config libvidstab "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
6443 enabled libvmaf           && require_pkg_config libvmaf "libvmaf >= 1.5.2" libvmaf.h compute_vmaf
6444 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
6445 enabled libvorbis         && require_pkg_config libvorbis vorbis vorbis/codec.h vorbis_info_init &&
6446                              require_pkg_config libvorbisenc vorbisenc vorbis/vorbisenc.h vorbis_encode_init
6447
6448 enabled libvpx            && {
6449     enabled libvpx_vp8_decoder && {
6450         check_pkg_config libvpx_vp8_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
6451             check_lib libvpx_vp8_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp8_dx VPX_IMG_FMT_HIGHBITDEPTH" "-lvpx $libm_extralibs $pthreads_extralibs"
6452     }
6453     enabled libvpx_vp8_encoder && {
6454         check_pkg_config libvpx_vp8_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
6455             check_lib libvpx_vp8_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp8_cx VPX_IMG_FMT_HIGHBITDEPTH" "-lvpx $libm_extralibs $pthreads_extralibs"
6456     }
6457     enabled libvpx_vp9_decoder && {
6458         check_pkg_config libvpx_vp9_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
6459             check_lib libvpx_vp9_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx VPX_IMG_FMT_HIGHBITDEPTH" "-lvpx $libm_extralibs $pthreads_extralibs"
6460     }
6461     enabled libvpx_vp9_encoder && {
6462         check_pkg_config libvpx_vp9_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
6463             check_lib libvpx_vp9_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VPX_IMG_FMT_HIGHBITDEPTH" "-lvpx $libm_extralibs $pthreads_extralibs"
6464     }
6465     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
6466         die "libvpx enabled but no supported decoders found"
6467     fi
6468 }
6469
6470 enabled libwebp           && {
6471     enabled libwebp_encoder      && require_pkg_config libwebp "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
6472     enabled libwebp_anim_encoder && check_pkg_config libwebp_anim_encoder "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit; }
6473 enabled libx264           && { check_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode ||
6474                                { require libx264 "stdint.h x264.h" x264_encoder_encode "-lx264 $pthreads_extralibs $libm_extralibs" &&
6475                                  warn "using libx264 without pkg-config"; } } &&
6476                              require_cpp_condition libx264 x264.h "X264_BUILD >= 118" &&
6477                              check_cpp_condition libx262 x264.h "X264_MPEG2"
6478 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
6479                              require_cpp_condition libx265 x265.h "X265_BUILD >= 70"
6480 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode "-lxavs $pthreads_extralibs $libm_extralibs"
6481 enabled libxavs2          && require_pkg_config libxavs2 "xavs2 >= 1.3.0" "stdint.h xavs2.h" xavs2_api_get
6482 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
6483 enabled libzimg           && require_pkg_config libzimg "zimg >= 2.7.0" zimg.h zimg_get_api_version
6484 enabled libzmq            && require_pkg_config libzmq "libzmq >= 4.2.1" zmq.h zmq_ctx_new
6485 enabled libzvbi           && require_pkg_config libzvbi zvbi-0.2 libzvbi.h vbi_decoder_new &&
6486                              { test_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
6487                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
6488 enabled libxml2           && require_pkg_config libxml2 libxml-2.0 libxml2/libxml/xmlversion.h xmlCheckVersion
6489 enabled mbedtls           && { check_pkg_config mbedtls mbedtls mbedtls/x509_crt.h mbedtls_x509_crt_init ||
6490                                check_pkg_config mbedtls mbedtls mbedtls/ssl.h mbedtls_ssl_init ||
6491                                check_lib mbedtls mbedtls/ssl.h mbedtls_ssl_init -lmbedtls -lmbedx509 -lmbedcrypto ||
6492                                die "ERROR: mbedTLS not found"; }
6493 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
6494 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
6495                                { ! enabled cross_compile &&
6496                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
6497                                  add_ldflags -L/opt/vc/lib/ &&
6498                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
6499                                die "ERROR: mmal not found" &&
6500                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
6501 enabled openal            && { { for al_extralibs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
6502                                check_lib openal 'AL/al.h' alGetError "${al_extralibs}" && break; done } ||
6503                                die "ERROR: openal not found"; } &&
6504                              { test_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
6505                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
6506 enabled opencl            && { check_pkg_config opencl OpenCL CL/cl.h clEnqueueNDRangeKernel ||
6507                                check_lib opencl OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
6508                                check_lib opencl CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
6509                                die "ERROR: opencl not found"; } &&
6510                              { test_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
6511                                test_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
6512                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
6513 enabled opengl            && { check_lib opengl GL/glx.h glXGetProcAddress "-lGL" ||
6514                                check_lib opengl windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
6515                                check_lib opengl OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
6516                                check_lib opengl ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
6517                                die "ERROR: opengl not found."
6518                              }
6519 enabled omx_rpi           && { test_code cc OMX_Core.h OMX_IndexConfigBrcmVideoRequestIFrame ||
6520                                { ! enabled cross_compile &&
6521                                  add_cflags -isystem/opt/vc/include/IL &&
6522                                  test_code cc OMX_Core.h OMX_IndexConfigBrcmVideoRequestIFrame; } ||
6523                                die "ERROR: OpenMAX IL headers from raspberrypi/firmware not found"; } &&
6524                              enable omx
6525 enabled omx               && require_headers OMX_Core.h
6526 enabled openssl           && { check_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
6527                                check_pkg_config openssl openssl openssl/ssl.h SSL_library_init ||
6528                                check_lib openssl openssl/ssl.h OPENSSL_init_ssl -lssl -lcrypto ||
6529                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
6530                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
6531                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
6532                                die "ERROR: openssl not found"; }
6533 enabled pocketsphinx      && require_pkg_config pocketsphinx pocketsphinx pocketsphinx/pocketsphinx.h ps_init
6534 enabled rkmpp             && { require_pkg_config rkmpp rockchip_mpp  rockchip/rk_mpi.h mpp_create &&
6535                                require_pkg_config rockchip_mpp "rockchip_mpp >= 1.3.7" rockchip/rk_mpi.h mpp_create &&
6536                                { enabled libdrm ||
6537                                  die "ERROR: rkmpp requires --enable-libdrm"; }
6538                              }
6539 enabled vapoursynth       && require_pkg_config vapoursynth "vapoursynth-script >= 42" VSScript.h vsscript_init
6540
6541
6542 if enabled gcrypt; then
6543     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
6544     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
6545         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
6546         gcrypt_extralibs=$("${GCRYPT_CONFIG}" --libs)
6547         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_extralibs ||
6548             die "ERROR: gcrypt not found"
6549         add_cflags $gcrypt_cflags
6550     else
6551         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
6552     fi
6553 fi
6554
6555 if enabled sdl2; then
6556     SDL2_CONFIG="${cross_prefix}sdl2-config"
6557     test_pkg_config sdl2 "sdl2 >= 2.0.1 sdl2 < 2.1.0" SDL_events.h SDL_PollEvent
6558     if disabled sdl2 && "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
6559         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
6560         sdl2_extralibs=$("${SDL2_CONFIG}" --libs)
6561         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
6562         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
6563         check_func_headers SDL_events.h SDL_PollEvent $sdl2_extralibs $sdl2_cflags &&
6564             enable sdl2
6565     fi
6566     if test $target_os = "mingw32"; then
6567         sdl2_extralibs=$(filter_out '-mwindows' $sdl2_extralibs)
6568     fi
6569 fi
6570
6571 if enabled decklink; then
6572     case $target_os in
6573         mingw32*|mingw64*|win32|win64)
6574             decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
6575             decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
6576             ;;
6577     esac
6578 fi
6579
6580 enabled securetransport &&
6581     check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
6582     check_lib securetransport "Security/SecureTransport.h Security/Security.h" "SSLCreateContext" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" ||
6583         disable securetransport
6584
6585 enabled securetransport &&
6586     check_func SecItemImport "-Wl,-framework,CoreFoundation -Wl,-framework,Security"
6587
6588 enabled schannel &&
6589     check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
6590     test_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" &&
6591     schannel_extralibs="-lsecur32" ||
6592         disable schannel
6593
6594 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
6595 enabled makeinfo \
6596     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
6597     && enable makeinfo_html || disable makeinfo_html
6598 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
6599 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
6600 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
6601 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
6602
6603 # check V4L2 codecs available in the API
6604 if enabled v4l2_m2m; then
6605     check_headers linux/fb.h
6606     check_headers linux/videodev2.h
6607     test_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6608     check_cc v4l2_m2m linux/videodev2.h "int i = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_VIDEO_M2M | V4L2_BUF_FLAG_LAST;"
6609     check_cc vc1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VC1_ANNEX_G;"
6610     check_cc mpeg1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG1;"
6611     check_cc mpeg2_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG2;"
6612     check_cc mpeg4_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG4;"
6613     check_cc hevc_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_HEVC;"
6614     check_cc h263_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H263;"
6615     check_cc h264_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H264;"
6616     check_cc vp8_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP8;"
6617     check_cc vp9_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP9;"
6618 fi
6619
6620 check_headers sys/videoio.h
6621 test_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6622
6623 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
6624 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
6625 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
6626 # w32api 3.12 had it defined wrong
6627 check_cpp_condition vfwcap_defines vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER"
6628
6629 check_type "dshow.h" IBaseFilter
6630
6631 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
6632 check_headers "dev/bktr/ioctl_meteor.h dev/bktr/ioctl_bt848.h"                   ||
6633     check_headers "machine/ioctl_meteor.h machine/ioctl_bt848.h"                 ||
6634     check_headers "dev/video/meteor/ioctl_meteor.h dev/video/bktr/ioctl_bt848.h" ||
6635     check_headers "dev/ic/bt8xx.h"
6636
6637 if check_struct sys/soundcard.h audio_buf_info bytes; then
6638     enable_sanitized sys/soundcard.h
6639 else
6640     test_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_sanitized sys/soundcard.h
6641     #include <sys/soundcard.h>
6642     audio_buf_info abc;
6643 EOF
6644 fi
6645
6646 enabled alsa && { check_pkg_config alsa alsa "alsa/asoundlib.h" snd_pcm_htimestamp ||
6647                   check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound; }
6648
6649 enabled libjack &&
6650     require_pkg_config libjack jack jack/jack.h jack_port_get_latency_range
6651
6652 enabled sndio && check_lib sndio sndio.h sio_open -lsndio
6653
6654 if enabled libcdio; then
6655     check_pkg_config libcdio libcdio_paranoia "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open ||
6656     check_pkg_config libcdio libcdio_paranoia "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open ||
6657     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6658     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6659     die "ERROR: No usable libcdio/cdparanoia found"
6660 fi
6661
6662 enabled libxcb && check_pkg_config libxcb "xcb >= 1.4" xcb/xcb.h xcb_connect ||
6663     disable libxcb_shm libxcb_shape libxcb_xfixes
6664
6665 if enabled libxcb; then
6666     enabled libxcb_shm    && check_pkg_config libxcb_shm    xcb-shm    xcb/shm.h    xcb_shm_attach
6667     enabled libxcb_shape  && check_pkg_config libxcb_shape  xcb-shape  xcb/shape.h  xcb_shape_get_rectangles
6668     enabled libxcb_xfixes && check_pkg_config libxcb_xfixes xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image
6669 fi
6670
6671 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6672
6673 # d3d11va requires linking directly to dxgi and d3d11 if not building for
6674 # the desktop api partition
6675 test_cpp <<EOF && enable uwp && d3d11va_extralibs="-ldxgi -ld3d11"
6676 #ifdef WINAPI_FAMILY
6677 #include <winapifamily.h>
6678 #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
6679 #error desktop, not uwp
6680 #else
6681 // WINAPI_FAMILY_APP, WINAPI_FAMILY_PHONE_APP => UWP
6682 #endif
6683 #else
6684 #error no family set
6685 #endif
6686 EOF
6687
6688 enabled libdrm &&
6689     check_pkg_config libdrm_getfb2 libdrm "xf86drmMode.h" drmModeGetFB2
6690
6691 enabled vaapi &&
6692     check_pkg_config vaapi "libva >= 0.35.0" "va/va.h" vaInitialize
6693
6694 if enabled vaapi; then
6695     check_pkg_config vaapi_drm "libva-drm" "va/va_drm.h" vaGetDisplayDRM
6696
6697     if enabled xlib; then
6698         check_pkg_config vaapi_x11 "libva-x11" "va/va_x11.h" vaGetDisplay
6699     fi
6700
6701     check_cpp_condition vaapi_1 "va/va.h" "VA_CHECK_VERSION(1, 0, 0)"
6702
6703     check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
6704     check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
6705     check_struct "va/va.h" "VADecPictureParameterBufferAV1" bit_depth_idx
6706     check_type   "va/va.h va/va_vpp.h" "VAProcFilterParameterBufferHDRToneMapping"
6707     check_struct "va/va.h va/va_vpp.h" "VAProcPipelineCaps" rotation_flags
6708     check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
6709     check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
6710     check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
6711     check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
6712 fi
6713
6714 if enabled_all opencl libdrm ; then
6715     check_type "CL/cl_intel.h" "clCreateImageFromFdINTEL_fn" &&
6716         enable opencl_drm_beignet
6717     check_func_headers "CL/cl_ext.h" clImportMemoryARM &&
6718         enable opencl_drm_arm
6719 fi
6720
6721 if enabled_all opencl vaapi ; then
6722     if enabled opencl_drm_beignet ; then
6723         enable opencl_vaapi_beignet
6724     else
6725         check_type "CL/cl.h CL/cl_va_api_media_sharing_intel.h" "clCreateFromVA_APIMediaSurfaceINTEL_fn" &&
6726             enable opencl_vaapi_intel_media
6727     fi
6728 fi
6729
6730 if enabled_all opencl dxva2 ; then
6731     check_type "CL/cl_dx9_media_sharing.h" cl_dx9_surface_info_khr &&
6732         enable opencl_dxva2
6733 fi
6734
6735 if enabled_all opencl d3d11va ; then
6736     check_type "CL/cl_d3d11.h" clGetDeviceIDsFromD3D11KHR_fn &&
6737         enable opencl_d3d11
6738 fi
6739
6740 enabled vdpau &&
6741     check_cpp_condition vdpau vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP"
6742
6743 enabled vdpau &&
6744     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
6745
6746 enabled crystalhd && check_lib crystalhd "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd
6747
6748 enabled vulkan &&
6749     require_pkg_config vulkan "vulkan >= 1.1.97" "vulkan/vulkan.h" vkCreateInstance
6750
6751 if enabled x86; then
6752     case $target_os in
6753         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6754             ;;
6755         *)
6756             disable ffnvcodec cuvid nvdec nvenc
6757             ;;
6758     esac
6759 elif enabled_any aarch64 ppc64 && ! enabled bigendian; then
6760     case $target_os in
6761         linux)
6762             ;;
6763         *)
6764             disable ffnvcodec cuvid nvdec nvenc
6765             ;;
6766     esac
6767 else
6768     disable ffnvcodec cuvid nvdec nvenc
6769 fi
6770
6771 enabled ffnvcodec && enable cuda
6772
6773 enabled nvenc &&
6774     test_cc -I$source_path <<EOF || disable nvenc
6775 #include <ffnvcodec/nvEncodeAPI.h>
6776 NV_ENCODE_API_FUNCTION_LIST flist;
6777 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6778 int main(void) { return 0; }
6779 EOF
6780
6781 if enabled_any nvdec cuvid; then
6782     check_type "ffnvcodec/dynlink_cuda.h ffnvcodec/dynlink_cuviddec.h" "CUVIDAV1PICPARAMS"
6783 fi
6784
6785 enabled amf &&
6786     check_cpp_condition amf "AMF/core/Version.h" \
6787         "(AMF_VERSION_MAJOR << 48 | AMF_VERSION_MINOR << 32 | AMF_VERSION_RELEASE << 16 | AMF_VERSION_BUILD_NUM) >= 0x0001000400090000"
6788
6789 # Funny iconv installations are not unusual, so check it after all flags have been set
6790 if enabled libc_iconv; then
6791     check_func_headers iconv.h iconv
6792 elif enabled iconv; then
6793     check_func_headers iconv.h iconv || check_lib iconv iconv.h iconv -liconv
6794 fi
6795
6796 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6797
6798 # add some useful compiler flags if supported
6799 check_cflags -Wdeclaration-after-statement
6800 check_cflags -Wall
6801 check_cflags -Wdisabled-optimization
6802 check_cflags -Wpointer-arith
6803 check_cflags -Wredundant-decls
6804 check_cflags -Wwrite-strings
6805 check_cflags -Wtype-limits
6806 check_cflags -Wundef
6807 check_cflags -Wmissing-prototypes
6808 check_cflags -Wno-pointer-to-int-cast
6809 check_cflags -Wstrict-prototypes
6810 check_cflags -Wempty-body
6811
6812 if enabled extra_warnings; then
6813     check_cflags -Wcast-qual
6814     check_cflags -Wextra
6815     check_cflags -Wpedantic
6816 fi
6817
6818 check_disable_warning(){
6819     warning_flag=-W${1#-Wno-}
6820     test_cflags $unknown_warning_flags $warning_flag && add_cflags $1
6821 }
6822
6823 test_cflags -Werror=unused-command-line-argument &&
6824     append unknown_warning_flags "-Werror=unused-command-line-argument"
6825 test_cflags -Werror=unknown-warning-option &&
6826     append unknown_warning_flags "-Werror=unknown-warning-option"
6827
6828 check_disable_warning -Wno-parentheses
6829 check_disable_warning -Wno-switch
6830 check_disable_warning -Wno-format-zero-length
6831 check_disable_warning -Wno-pointer-sign
6832 check_disable_warning -Wno-unused-const-variable
6833 check_disable_warning -Wno-bool-operation
6834 check_disable_warning -Wno-char-subscripts
6835
6836 check_disable_warning_headers(){
6837     warning_flag=-W${1#-Wno-}
6838     test_cflags $warning_flag && add_cflags_headers $1
6839 }
6840
6841 check_disable_warning_headers -Wno-deprecated-declarations
6842 check_disable_warning_headers -Wno-unused-variable
6843
6844 test_cc <<EOF && enable blocks_extension
6845 void (^block)(void);
6846 EOF
6847
6848 # add some linker flags
6849 check_ldflags -Wl,--warn-common
6850 check_ldflags -Wl,-rpath-link=:libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6851 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir && add_ldsoflags -Wl,-rpath,$libdir
6852 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6853
6854 # add some strip flags
6855 check_stripflags -x
6856
6857 enabled neon_clobber_test &&
6858     check_ldflags -Wl,--wrap,avcodec_open2              \
6859                   -Wl,--wrap,avcodec_decode_audio4      \
6860                   -Wl,--wrap,avcodec_decode_video2      \
6861                   -Wl,--wrap,avcodec_decode_subtitle2   \
6862                   -Wl,--wrap,avcodec_encode_audio2      \
6863                   -Wl,--wrap,avcodec_encode_video2      \
6864                   -Wl,--wrap,avcodec_encode_subtitle    \
6865                   -Wl,--wrap,avcodec_send_packet        \
6866                   -Wl,--wrap,avcodec_receive_packet     \
6867                   -Wl,--wrap,avcodec_send_frame         \
6868                   -Wl,--wrap,avcodec_receive_frame      \
6869                   -Wl,--wrap,swr_convert                \
6870                   -Wl,--wrap,avresample_convert ||
6871     disable neon_clobber_test
6872
6873 enabled xmm_clobber_test &&
6874     check_ldflags -Wl,--wrap,avcodec_open2              \
6875                   -Wl,--wrap,avcodec_decode_audio4      \
6876                   -Wl,--wrap,avcodec_decode_video2      \
6877                   -Wl,--wrap,avcodec_decode_subtitle2   \
6878                   -Wl,--wrap,avcodec_encode_audio2      \
6879                   -Wl,--wrap,avcodec_encode_video2      \
6880                   -Wl,--wrap,avcodec_encode_subtitle    \
6881                   -Wl,--wrap,avcodec_send_packet        \
6882                   -Wl,--wrap,avcodec_receive_packet     \
6883                   -Wl,--wrap,avcodec_send_frame         \
6884                   -Wl,--wrap,avcodec_receive_frame      \
6885                   -Wl,--wrap,swr_convert                \
6886                   -Wl,--wrap,avresample_convert         \
6887                   -Wl,--wrap,sws_scale ||
6888     disable xmm_clobber_test
6889
6890 check_ld "cc" proper_dce <<EOF
6891 extern const int array[512];
6892 static inline int func(void) { return array[0]; }
6893 int main(void) { return 0; }
6894 EOF
6895
6896 if enabled proper_dce; then
6897     echo "X { local: *; };" > $TMPV
6898     if test_ldflags -Wl,${version_script},$TMPV; then
6899         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6900         quotes='""'
6901         test_cc <<EOF && enable symver_asm_label
6902 void ff_foo(void) __asm__ ("av_foo@VERSION");
6903 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6904 EOF
6905         test_cc <<EOF && enable symver_gnu_asm
6906 __asm__(".symver ff_foo,av_foo@VERSION");
6907 void ff_foo(void) {}
6908 EOF
6909     fi
6910 fi
6911
6912 if [ -z "$optflags" ]; then
6913     if enabled small; then
6914         optflags=$cflags_size
6915     elif enabled optimizations; then
6916         optflags=$cflags_speed
6917     else
6918         optflags=$cflags_noopt
6919     fi
6920 fi
6921
6922 check_optflags(){
6923     check_cflags "$@"
6924     enabled lto && check_ldflags "$@"
6925 }
6926
6927 check_optflags $optflags
6928 check_optflags -fno-math-errno
6929 check_optflags -fno-signed-zeros
6930
6931 if enabled lto; then
6932     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6933     check_cflags  -flto
6934     check_ldflags -flto $cpuflags
6935     disable inline_asm_direct_symbol_refs
6936 fi
6937
6938 enabled ftrapv && check_cflags -ftrapv
6939
6940 test_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6941 int x;
6942 EOF
6943
6944
6945 if enabled icc; then
6946     # Just warnings, no remarks
6947     check_cflags -w1
6948     # -wd: Disable following warnings
6949     # 144, 167, 556: -Wno-pointer-sign
6950     # 188: enumerated type mixed with another type
6951     # 1292: attribute "foo" ignored
6952     # 1419: external declaration in primary source file
6953     # 10006: ignoring unknown option -fno-signed-zeros
6954     # 10148: ignoring unknown option -Wno-parentheses
6955     # 10156: ignoring option '-W'; no argument required
6956     # 13200: No EMMS instruction before call to function
6957     # 13203: No EMMS instruction before return from function
6958     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6959     # 11030: Warning unknown option --as-needed
6960     # 10156: ignoring option '-export'; no argument required
6961     check_ldflags -wd10156,11030
6962     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6963     enable ebp_available
6964     # The test above does not test linking
6965     enabled lto && disable symver_asm_label
6966     if enabled x86_32; then
6967         icc_version=$($cc -dumpversion)
6968         test ${icc_version%%.*} -ge 11 &&
6969             check_cflags -falign-stack=maintain-16-byte ||
6970             disable aligned_stack
6971     fi
6972 elif enabled gcc; then
6973     check_optflags -fno-tree-vectorize
6974     check_cflags -Werror=format-security
6975     check_cflags -Werror=implicit-function-declaration
6976     check_cflags -Werror=missing-prototypes
6977     check_cflags -Werror=return-type
6978     check_cflags -Werror=vla
6979     check_cflags -Wformat
6980     check_cflags -fdiagnostics-color=auto
6981     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6982     if enabled x86_32; then
6983         case $target_os in
6984         *bsd*)
6985             # BSDs don't guarantee a 16 byte aligned stack, but we can
6986             # request GCC to try to maintain 16 byte alignment throughout
6987             # function calls. Library entry points that might call assembly
6988             # functions align the stack. (The parameter means 2^4 bytes.)
6989             check_cflags -mpreferred-stack-boundary=4
6990             ;;
6991         esac
6992     fi
6993 elif enabled llvm_gcc; then
6994     check_cflags -mllvm -stack-alignment=16
6995 elif enabled clang; then
6996     if enabled x86_32; then
6997         # Clang doesn't support maintaining alignment without assuming the
6998         # same alignment in every function. If 16 byte alignment would be
6999         # enabled, one would also have to either add attribute_align_arg on
7000         # every single entry point into the libraries or enable -mstackrealign
7001         # (doing stack realignment in every single function).
7002         case $target_os in
7003         mingw32|win32|*bsd*)
7004             disable aligned_stack
7005             ;;
7006         *)
7007             check_cflags -mllvm -stack-alignment=16
7008             check_cflags -mstack-alignment=16
7009             ;;
7010         esac
7011     else
7012         check_cflags -mllvm -stack-alignment=16
7013         check_cflags -mstack-alignment=16
7014     fi
7015     check_cflags -Qunused-arguments
7016     check_cflags -Werror=implicit-function-declaration
7017     check_cflags -Werror=missing-prototypes
7018     check_cflags -Werror=return-type
7019 elif enabled cparser; then
7020     add_cflags -Wno-missing-variable-declarations
7021     add_cflags -Wno-empty-statement
7022 elif enabled armcc; then
7023     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
7024     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
7025     # 2523: use of inline assembly is deprecated
7026     add_cflags -W${armcc_opt},--diag_suppress=2523
7027     add_cflags -W${armcc_opt},--diag_suppress=1207
7028     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
7029     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
7030     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
7031     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
7032 elif enabled pathscale; then
7033     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
7034     disable inline_asm
7035 elif enabled_any msvc icl; then
7036     enabled x86_32 && disable aligned_stack
7037     enabled_all x86_32 debug && add_cflags -Oy-
7038     enabled debug && add_ldflags -debug
7039     enable pragma_deprecated
7040     if enabled icl; then
7041         # -Qansi-alias is basically -fstrict-aliasing, but does not work
7042         # (correctly) on icl 13.x.
7043         test_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
7044             add_cflags -Qansi-alias
7045         # Some inline asm is not compilable in debug
7046         if enabled debug; then
7047             disable ebp_available
7048             disable ebx_available
7049         fi
7050     fi
7051     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
7052     check_cpp_condition log2 crtversion.h "_VC_CRT_MAJOR_VERSION >= 12"
7053     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
7054     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
7055     # (as it ends up if the restrict redefine is done before including stdlib.h), while
7056     # MSVC 2013 and newer can handle it fine.
7057     # If this declspec fails, force including stdlib.h before the restrict redefinition
7058     # happens in config.h.
7059     if [ $restrict_keyword != restrict ]; then
7060         test_cc <<EOF || add_cflags -FIstdlib.h
7061 __declspec($restrict_keyword) void *foo(int);
7062 EOF
7063     fi
7064     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
7065     # Issue has been fixed in MSVC v19.00.24218.
7066     test_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
7067         check_cflags -d2SSAOptimizer-
7068     # enable utf-8 source processing on VS2015 U2 and newer
7069     test_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
7070         add_cflags -utf-8
7071 fi
7072
7073 for pfx in "" host_; do
7074     varname=${pfx%_}cc_type
7075     eval "type=\$$varname"
7076     if [ "$type" = "msvc" ]; then
7077         test_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
7078 static inline int foo(int a) { return a; }
7079 EOF
7080     fi
7081 done
7082
7083 case $as_type in
7084     clang)
7085         add_asflags -Qunused-arguments
7086     ;;
7087 esac
7088
7089 case $ld_type in
7090     clang)
7091         check_ldflags -Qunused-arguments
7092     ;;
7093 esac
7094
7095 enable frame_thread_encoder
7096
7097 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
7098
7099 check_deps $CONFIG_LIST       \
7100            $CONFIG_EXTRA      \
7101            $HAVE_LIST         \
7102            $ALL_COMPONENTS    \
7103
7104 enabled threads && ! enabled pthreads && ! enabled atomics_native && die "non pthread threading without atomics not supported, try adding --enable-pthreads or --cpu=i486 or higher if you are on x86"
7105 enabled avresample && warn "Building with deprecated library libavresample"
7106
7107 case $target_os in
7108 haiku)
7109     disable memalign
7110     disable posix_memalign
7111     ;;
7112 *-dos|freedos|opendos)
7113     if test_cpp_condition sys/version.h "defined(__DJGPP__) && __DJGPP__ == 2 && __DJGPP_MINOR__ == 5"; then
7114         disable memalign
7115     fi
7116     ;;
7117 esac
7118
7119 flatten_extralibs(){
7120     nested_entries=
7121     list_name=$1
7122     eval list=\$${1}
7123     for entry in $list; do
7124         entry_copy=$entry
7125         resolve entry_copy
7126         flat_entries=
7127         for e in $entry_copy; do
7128             case $e in
7129                 *_extralibs) nested_entries="$nested_entries$e ";;
7130                           *) flat_entries="$flat_entries$e ";;
7131             esac
7132         done
7133         eval $entry="\$flat_entries"
7134     done
7135     append $list_name "$nested_entries"
7136
7137     resolve nested_entries
7138     if test -n "$(filter '*_extralibs' $nested_entries)"; then
7139         flatten_extralibs $list_name
7140     fi
7141 }
7142
7143 flatten_extralibs_wrapper(){
7144     list_name=$1
7145     flatten_extralibs $list_name
7146     unique $list_name
7147     resolve $list_name
7148     eval $list_name=\$\(\$ldflags_filter \$$list_name\)
7149     eval printf \''%s'\' \""\$$list_name"\"
7150 }
7151
7152 for linkunit in $LIBRARY_LIST; do
7153     unset current_extralibs
7154     eval components=\$$(toupper ${linkunit})_COMPONENTS_LIST
7155     for comp in ${components}; do
7156         enabled $comp || continue
7157         comp_extralibs="${comp}_extralibs"
7158         append current_extralibs $comp_extralibs
7159     done
7160     eval prepend ${linkunit}_extralibs $current_extralibs
7161 done
7162
7163 for linkunit in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
7164     eval ${linkunit}_extralibs=\$\(flatten_extralibs_wrapper ${linkunit}_extralibs\)
7165 done
7166
7167 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
7168
7169 for thread in $THREADS_LIST; do
7170     if enabled $thread; then
7171         test -n "$thread_type" &&
7172             die "ERROR: Only one thread type must be selected." ||
7173             thread_type="$thread"
7174     fi
7175 done
7176
7177 if disabled stdatomic; then
7178     if enabled atomics_gcc; then
7179         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
7180     elif enabled atomics_win32; then
7181         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
7182     elif enabled atomics_suncc; then
7183         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
7184     elif enabled pthreads; then
7185         add_compat atomics/pthread/stdatomic.o
7186         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
7187     else
7188         enabled threads && die "Threading is enabled, but no atomics are available"
7189         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
7190     fi
7191 fi
7192
7193 # Check if requested libraries were found.
7194 for lib in $AUTODETECT_LIBS; do
7195     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
7196 done
7197
7198 enabled zlib && add_cppflags -DZLIB_CONST
7199
7200 # conditional library dependencies, in any order
7201 enabled afftdn_filter       && prepend avfilter_deps "avcodec"
7202 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
7203 enabled afir_filter         && prepend avfilter_deps "avcodec"
7204 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
7205 enabled aresample_filter    && prepend avfilter_deps "swresample"
7206 enabled atempo_filter       && prepend avfilter_deps "avcodec"
7207 enabled bm3d_filter         && prepend avfilter_deps "avcodec"
7208 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
7209 enabled convolve_filter     && prepend avfilter_deps "avcodec"
7210 enabled deconvolve_filter   && prepend avfilter_deps "avcodec"
7211 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
7212 enabled elbg_filter         && prepend avfilter_deps "avcodec"
7213 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
7214 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
7215 enabled firequalizer_filter && prepend avfilter_deps "avcodec"
7216 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
7217 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
7218 enabled pan_filter          && prepend avfilter_deps "swresample"
7219 enabled pp_filter           && prepend avfilter_deps "postproc"
7220 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
7221 enabled resample_filter && prepend avfilter_deps "avresample"
7222 enabled sab_filter          && prepend avfilter_deps "swscale"
7223 enabled scale_filter    && prepend avfilter_deps "swscale"
7224 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
7225 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
7226 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
7227 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
7228 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
7229 enabled signature_filter    && prepend avfilter_deps "avcodec avformat"
7230 enabled smartblur_filter    && prepend avfilter_deps "swscale"
7231 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
7232 enabled spp_filter          && prepend avfilter_deps "avcodec"
7233 enabled sr_filter           && prepend avfilter_deps "avformat swscale"
7234 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
7235 enabled uspp_filter         && prepend avfilter_deps "avcodec"
7236 enabled zoompan_filter      && prepend avfilter_deps "swscale"
7237
7238 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
7239
7240 #FIXME
7241 enabled_any sdl2_outdev opengl_outdev && enabled sdl2 &&
7242     add_cflags $(filter_out '-Dmain=SDL_main' $sdl2_cflags)
7243
7244 enabled opus_decoder    && prepend avcodec_deps "swresample"
7245
7246 # reorder the items at var $1 to align with the items order at var $2 .
7247 # die if an item at $1 is not at $2 .
7248 reorder_by(){
7249     eval rb_in=\$$1
7250     eval rb_ordered=\$$2
7251
7252     for rb in $rb_in; do
7253         is_in $rb $rb_ordered || die "$rb at \$$1 is not at \$$2"
7254     done
7255
7256     rb_out=
7257     for rb in $rb_ordered; do
7258         is_in $rb $rb_in && rb_out="$rb_out$rb "
7259     done
7260     eval $1=\$rb_out
7261 }
7262
7263 # deps-expand fflib $1:  N x {append all expanded deps; unique}
7264 # within a set of N items, N expansions are enough to expose a cycle.
7265 expand_deps(){
7266     unique ${1}_deps  # required for the early break test.
7267     for dummy in $LIBRARY_LIST; do  # N iteratios
7268         eval deps=\$${1}_deps
7269         append ${1}_deps $(map 'eval echo \$${v}_deps' $deps)
7270         unique ${1}_deps
7271         eval '[ ${#deps} = ${#'${1}_deps'} ]' && break  # doesn't expand anymore
7272     done
7273
7274     eval is_in $1 \$${1}_deps && die "Dependency cycle at ${1}_deps"
7275     reorder_by ${1}_deps LIBRARY_LIST  # linking order is expected later
7276 }
7277
7278 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
7279 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
7280
7281 map 'expand_deps $v' $LIBRARY_LIST
7282
7283 if test "$quiet" != "yes"; then
7284
7285 echo "install prefix            $prefix"
7286 echo "source path               $source_path"
7287 echo "C compiler                $cc"
7288 echo "C library                 $libc_type"
7289 if test "$host_cc" != "$cc"; then
7290     echo "host C compiler           $host_cc"
7291     echo "host C library            $host_libc_type"
7292 fi
7293 echo "ARCH                      $arch ($cpu)"
7294 if test "$build_suffix" != ""; then
7295     echo "build suffix              $build_suffix"
7296 fi
7297 if test "$progs_suffix" != ""; then
7298     echo "progs suffix              $progs_suffix"
7299 fi
7300 if test "$extra_version" != ""; then
7301     echo "version string suffix     $extra_version"
7302 fi
7303 echo "big-endian                ${bigendian-no}"
7304 echo "runtime cpu detection     ${runtime_cpudetect-no}"
7305 if enabled x86; then
7306     echo "standalone assembly       ${x86asm-no}"
7307     echo "x86 assembler             ${x86asmexe}"
7308     echo "MMX enabled               ${mmx-no}"
7309     echo "MMXEXT enabled            ${mmxext-no}"
7310     echo "3DNow! enabled            ${amd3dnow-no}"
7311     echo "3DNow! extended enabled   ${amd3dnowext-no}"
7312     echo "SSE enabled               ${sse-no}"
7313     echo "SSSE3 enabled             ${ssse3-no}"
7314     echo "AESNI enabled             ${aesni-no}"
7315     echo "AVX enabled               ${avx-no}"
7316     echo "AVX2 enabled              ${avx2-no}"
7317     echo "AVX-512 enabled           ${avx512-no}"
7318     echo "XOP enabled               ${xop-no}"
7319     echo "FMA3 enabled              ${fma3-no}"
7320     echo "FMA4 enabled              ${fma4-no}"
7321     echo "i686 features enabled     ${i686-no}"
7322     echo "CMOV is fast              ${fast_cmov-no}"
7323     echo "EBX available             ${ebx_available-no}"
7324     echo "EBP available             ${ebp_available-no}"
7325 fi
7326 if enabled aarch64; then
7327     echo "NEON enabled              ${neon-no}"
7328     echo "VFP enabled               ${vfp-no}"
7329 fi
7330 if enabled arm; then
7331     echo "ARMv5TE enabled           ${armv5te-no}"
7332     echo "ARMv6 enabled             ${armv6-no}"
7333     echo "ARMv6T2 enabled           ${armv6t2-no}"
7334     echo "VFP enabled               ${vfp-no}"
7335     echo "NEON enabled              ${neon-no}"
7336     echo "THUMB enabled             ${thumb-no}"
7337 fi
7338 if enabled mips; then
7339     echo "MIPS FPU enabled          ${mipsfpu-no}"
7340     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
7341     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
7342     echo "MIPS MSA enabled          ${msa-no}"
7343     echo "MIPS MSA2 enabled         ${msa2-no}"
7344     echo "LOONGSON MMI enabled      ${mmi-no}"
7345 fi
7346 if enabled ppc; then
7347     echo "AltiVec enabled           ${altivec-no}"
7348     echo "VSX enabled               ${vsx-no}"
7349     echo "POWER8 enabled            ${power8-no}"
7350     echo "PPC 4xx optimizations     ${ppc4xx-no}"
7351     echo "dcbzl available           ${dcbzl-no}"
7352 fi
7353 echo "debug symbols             ${debug-no}"
7354 echo "strip symbols             ${stripping-no}"
7355 echo "optimize for size         ${small-no}"
7356 echo "optimizations             ${optimizations-no}"
7357 echo "static                    ${static-no}"
7358 echo "shared                    ${shared-no}"
7359 echo "postprocessing support    ${postproc-no}"
7360 echo "network support           ${network-no}"
7361 echo "threading support         ${thread_type-no}"
7362 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
7363 echo "texi2html enabled         ${texi2html-no}"
7364 echo "perl enabled              ${perl-no}"
7365 echo "pod2man enabled           ${pod2man-no}"
7366 echo "makeinfo enabled          ${makeinfo-no}"
7367 echo "makeinfo supports HTML    ${makeinfo_html-no}"
7368 test -n "$random_seed" &&
7369     echo "random seed               ${random_seed}"
7370 echo
7371
7372 echo "External libraries:"
7373 print_enabled '' $EXTERNAL_LIBRARY_LIST $EXTERNAL_AUTODETECT_LIBRARY_LIST | print_in_columns
7374 echo
7375
7376 echo "External libraries providing hardware acceleration:"
7377 print_enabled '' $HWACCEL_LIBRARY_LIST $HWACCEL_AUTODETECT_LIBRARY_LIST | print_in_columns
7378 echo
7379
7380 echo "Libraries:"
7381 print_enabled '' $LIBRARY_LIST | print_in_columns
7382 echo
7383
7384 echo "Programs:"
7385 print_enabled '' $PROGRAM_LIST | print_in_columns
7386 echo
7387
7388 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
7389     echo "Enabled ${type}s:"
7390     eval list=\$$(toupper $type)_LIST
7391     print_enabled '_*' $list | print_in_columns
7392     echo
7393 done
7394
7395 if test -n "$ignore_tests"; then
7396     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
7397     echo "Ignored FATE tests:"
7398     echo $ignore_tests | print_in_columns
7399     echo
7400 fi
7401
7402 echo "License: $license"
7403
7404 fi # test "$quiet" != "yes"
7405
7406 if test -n "$WARN_IF_GETS_DISABLED_LIST"; then
7407     for cfg in $WARN_IF_GETS_DISABLED_LIST; do
7408         if disabled $cfg; then
7409             varname=${cfg}_disable_reason
7410             eval "warn \"Disabled $cfg because \$$varname\""
7411         fi
7412     done
7413 fi
7414
7415 if test -n "$WARNINGS"; then
7416     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
7417     enabled fatal_warnings && exit 1
7418 fi
7419
7420 test -e Makefile || echo "include $source_path/Makefile" > Makefile
7421
7422 esc(){
7423     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
7424 }
7425
7426 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" > ffbuild/config.fate
7427
7428 enabled stripping || strip="echo skipping strip"
7429 enabled stripping || striptype=""
7430
7431 config_files="$TMPH ffbuild/config.mak doc/config.texi"
7432
7433 cat > ffbuild/config.mak <<EOF
7434 # Automatically generated by configure - do not modify!
7435 ifndef FFMPEG_CONFIG_MAK
7436 FFMPEG_CONFIG_MAK=1
7437 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
7438 prefix=$prefix
7439 LIBDIR=\$(DESTDIR)$libdir
7440 SHLIBDIR=\$(DESTDIR)$shlibdir
7441 INCDIR=\$(DESTDIR)$incdir
7442 BINDIR=\$(DESTDIR)$bindir
7443 DATADIR=\$(DESTDIR)$datadir
7444 DOCDIR=\$(DESTDIR)$docdir
7445 MANDIR=\$(DESTDIR)$mandir
7446 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
7447 INSTALL_NAME_DIR=$install_name_dir
7448 SRC_PATH=$source_path
7449 SRC_LINK=$source_link
7450 ifndef MAIN_MAKEFILE
7451 SRC_PATH:=\$(SRC_PATH:.%=..%)
7452 endif
7453 CC_IDENT=$cc_ident
7454 ARCH=$arch
7455 INTRINSICS=$intrinsics
7456 EXTERN_PREFIX=$extern_prefix
7457 CC=$cc
7458 CXX=$cxx
7459 AS=$as
7460 OBJCC=$objcc
7461 LD=$ld
7462 DEPCC=$dep_cc
7463 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
7464 DEPAS=$as
7465 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
7466 X86ASM=$x86asmexe
7467 DEPX86ASM=$x86asmexe
7468 DEPX86ASMFLAGS=\$(X86ASMFLAGS)
7469 AR=$ar
7470 ARFLAGS=$arflags
7471 AR_O=$ar_o
7472 AR_CMD=$ar
7473 NM_CMD=$nm
7474 RANLIB=$ranlib
7475 STRIP=$strip
7476 STRIPTYPE=$striptype
7477 NVCC=$nvcc
7478 CP=cp -p
7479 LN_S=$ln_s
7480 CPPFLAGS=$CPPFLAGS
7481 CFLAGS=$CFLAGS
7482 CXXFLAGS=$CXXFLAGS
7483 OBJCFLAGS=$OBJCFLAGS
7484 ASFLAGS=$ASFLAGS
7485 NVCCFLAGS=$nvccflags
7486 AS_C=$AS_C
7487 AS_O=$AS_O
7488 OBJCC_C=$OBJCC_C
7489 OBJCC_E=$OBJCC_E
7490 OBJCC_O=$OBJCC_O
7491 CC_C=$CC_C
7492 CC_E=$CC_E
7493 CC_O=$CC_O
7494 CXX_C=$CXX_C
7495 CXX_O=$CXX_O
7496 NVCC_C=$NVCC_C
7497 NVCC_O=$NVCC_O
7498 LD_O=$LD_O
7499 X86ASM_O=$X86ASM_O
7500 LD_LIB=$LD_LIB
7501 LD_PATH=$LD_PATH
7502 DLLTOOL=$dlltool
7503 WINDRES=$windres
7504 DEPWINDRES=$dep_cc
7505 DOXYGEN=$doxygen
7506 LDFLAGS=$LDFLAGS
7507 LDEXEFLAGS=$LDEXEFLAGS
7508 LDSOFLAGS=$LDSOFLAGS
7509 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
7510 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
7511 X86ASMFLAGS=$X86ASMFLAGS
7512 MSAFLAGS=$MSAFLAGS
7513 MMIFLAGS=$MMIFLAGS
7514 BUILDSUF=$build_suffix
7515 PROGSSUF=$progs_suffix
7516 FULLNAME=$FULLNAME
7517 LIBPREF=$LIBPREF
7518 LIBSUF=$LIBSUF
7519 LIBNAME=$LIBNAME
7520 SLIBPREF=$SLIBPREF
7521 SLIBSUF=$SLIBSUF
7522 EXESUF=$EXESUF
7523 EXTRA_VERSION=$extra_version
7524 CCDEP=$CCDEP
7525 CXXDEP=$CXXDEP
7526 CCDEP_FLAGS=$CCDEP_FLAGS
7527 ASDEP=$ASDEP
7528 ASDEP_FLAGS=$ASDEP_FLAGS
7529 X86ASMDEP=$X86ASMDEP
7530 X86ASMDEP_FLAGS=$X86ASMDEP_FLAGS
7531 CC_DEPFLAGS=$CC_DEPFLAGS
7532 AS_DEPFLAGS=$AS_DEPFLAGS
7533 X86ASM_DEPFLAGS=$X86ASM_DEPFLAGS
7534 HOSTCC=$host_cc
7535 HOSTLD=$host_ld
7536 HOSTCFLAGS=$host_cflags
7537 HOSTCPPFLAGS=$host_cppflags
7538 HOSTEXESUF=$HOSTEXESUF
7539 HOSTLDFLAGS=$host_ldflags
7540 HOSTEXTRALIBS=$host_extralibs
7541 DEPHOSTCC=$host_cc
7542 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
7543 HOSTCCDEP=$HOSTCCDEP
7544 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
7545 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
7546 HOSTCC_C=$HOSTCC_C
7547 HOSTCC_O=$HOSTCC_O
7548 HOSTLD_O=$HOSTLD_O
7549 TARGET_EXEC=$target_exec $target_exec_args
7550 TARGET_PATH=$target_path
7551 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
7552 CFLAGS-ffplay=${sdl2_cflags}
7553 CFLAGS_HEADERS=$CFLAGS_HEADERS
7554 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
7555 EXTRALIBS=$extralibs
7556 COMPAT_OBJS=$compat_objs
7557 INSTALL=$install
7558 LIBTARGET=${LIBTARGET}
7559 SLIBNAME=${SLIBNAME}
7560 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
7561 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
7562 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
7563 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
7564 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
7565 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
7566 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
7567 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
7568 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
7569 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
7570 NOREDZONE_FLAGS=$noredzone_flags
7571 LIBFUZZER_PATH=$libfuzzer_path
7572 IGNORE_TESTS=$ignore_tests
7573 EOF
7574
7575 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> ffbuild/config.mak' $LIBRARY_LIST
7576
7577 for entry in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
7578     eval echo "EXTRALIBS-${entry}=\$${entry}_extralibs" >> ffbuild/config.mak
7579 done
7580
7581 cat > $TMPH <<EOF
7582 /* Automatically generated by configure - do not modify! */
7583 #ifndef FFMPEG_CONFIG_H
7584 #define FFMPEG_CONFIG_H
7585 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
7586 #define FFMPEG_LICENSE "$(c_escape $license)"
7587 #define CONFIG_THIS_YEAR 2021
7588 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
7589 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
7590 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
7591 #define OS_NAME $target_os
7592 #define av_restrict $restrict_keyword
7593 #define EXTERN_PREFIX "${extern_prefix}"
7594 #define EXTERN_ASM ${extern_prefix}
7595 #define BUILDSUF "$build_suffix"
7596 #define SLIBSUF "$SLIBSUF"
7597 #define HAVE_MMX2 HAVE_MMXEXT
7598 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
7599 EOF
7600
7601 test -n "$assert_level" &&
7602     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
7603
7604 test -n "$malloc_prefix" &&
7605     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
7606
7607 if enabled x86asm; then
7608     append config_files $TMPASM
7609     cat > $TMPASM <<EOF
7610 ; Automatically generated by configure - do not modify!
7611 EOF
7612 fi
7613
7614 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
7615
7616
7617 mkdir -p doc
7618 mkdir -p tests
7619 mkdir -p tests/api
7620 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
7621
7622 print_config ARCH_   "$config_files" $ARCH_LIST
7623 print_config HAVE_   "$config_files" $HAVE_LIST
7624 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
7625                                      $CONFIG_EXTRA      \
7626                                      $ALL_COMPONENTS    \
7627
7628 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
7629 echo "endif # FFMPEG_CONFIG_MAK" >> ffbuild/config.mak
7630
7631 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
7632 cp_if_changed $TMPH config.h
7633 touch ffbuild/.config
7634
7635 enabled x86asm && cp_if_changed $TMPASM config.asm
7636
7637 cat > $TMPH <<EOF
7638 /* Generated by ffmpeg configure */
7639 #ifndef AVUTIL_AVCONFIG_H
7640 #define AVUTIL_AVCONFIG_H
7641 EOF
7642
7643 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
7644
7645 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
7646
7647 cp_if_changed $TMPH libavutil/avconfig.h
7648
7649 # full_filter_name_foo=vf_foo
7650 # full_filter_name_bar=asrc_bar
7651 # ...
7652 eval "$(sed -n "s/^extern AVFilter ff_\([avfsinkrc]\{2,5\}\)_\(.*\);/full_filter_name_\2=\1_\2/p" $source_path/libavfilter/allfilters.c)"
7653
7654 # generate the lists of enabled components
7655 print_enabled_components(){
7656     file=$1
7657     struct_name=$2
7658     name=$3
7659     shift 3
7660     echo "static const $struct_name * const $name[] = {" > $TMPH
7661     for c in $*; do
7662         if enabled $c; then
7663             case $name in
7664                 filter_list)
7665                     eval c=\$full_filter_name_${c%_filter}
7666                 ;;
7667                 indev_list)
7668                     c=${c%_indev}_demuxer
7669                 ;;
7670                 outdev_list)
7671                     c=${c%_outdev}_muxer
7672                 ;;
7673             esac
7674             printf "    &ff_%s,\n" $c >> $TMPH
7675         fi
7676     done
7677     if [ "$name" = "filter_list" ]; then
7678         for c in asrc_abuffer vsrc_buffer asink_abuffer vsink_buffer; do
7679             printf "    &ff_%s,\n" $c >> $TMPH
7680         done
7681     fi
7682     echo "    NULL };" >> $TMPH
7683     cp_if_changed $TMPH $file
7684 }
7685
7686 print_enabled_components libavfilter/filter_list.c AVFilter filter_list $FILTER_LIST
7687 print_enabled_components libavcodec/codec_list.c AVCodec codec_list $CODEC_LIST
7688 print_enabled_components libavcodec/parser_list.c AVCodecParser parser_list $PARSER_LIST
7689 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
7690 print_enabled_components libavformat/demuxer_list.c AVInputFormat demuxer_list $DEMUXER_LIST
7691 print_enabled_components libavformat/muxer_list.c AVOutputFormat muxer_list $MUXER_LIST
7692 print_enabled_components libavdevice/indev_list.c AVInputFormat indev_list $INDEV_LIST
7693 print_enabled_components libavdevice/outdev_list.c AVOutputFormat outdev_list $OUTDEV_LIST
7694 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
7695
7696 # Settings for pkg-config files
7697
7698 cat > $TMPH <<EOF
7699 # Automatically generated by configure - do not modify!
7700 shared=$shared
7701 build_suffix=$build_suffix
7702 prefix=$prefix
7703 libdir=$libdir
7704 incdir=$incdir
7705 rpath=$(enabled rpath && echo "-Wl,-rpath,\${libdir}")
7706 source_path=${source_path}
7707 LIBPREF=${LIBPREF}
7708 LIBSUF=${LIBSUF}
7709 extralibs_avutil="$avutil_extralibs"
7710 extralibs_avcodec="$avcodec_extralibs"
7711 extralibs_avformat="$avformat_extralibs"
7712 extralibs_avdevice="$avdevice_extralibs"
7713 extralibs_avfilter="$avfilter_extralibs"
7714 extralibs_avresample="$avresample_extralibs"
7715 extralibs_postproc="$postproc_extralibs"
7716 extralibs_swscale="$swscale_extralibs"
7717 extralibs_swresample="$swresample_extralibs"
7718 EOF
7719
7720 for lib in $LIBRARY_LIST; do
7721     lib_deps="$(eval echo \$${lib}_deps)"
7722     echo ${lib}_deps=\"$lib_deps\" >> $TMPH
7723 done
7724
7725 cp_if_changed $TMPH ffbuild/config.sh