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 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3368 rtsp_demuxer_select="http_protocol rtpdec"
3369 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3370 sap_demuxer_select="sdp_demuxer"
3371 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3372 sdp_demuxer_select="rtpdec"
3373 smoothstreaming_muxer_select="ismv_muxer"
3374 spdif_demuxer_select="adts_header"
3375 spdif_muxer_select="adts_header"
3376 spx_muxer_select="ogg_muxer"
3377 swf_demuxer_suggest="zlib"
3378 tak_demuxer_select="tak_parser"
3379 truehd_demuxer_select="mlp_parser"
3380 tg2_muxer_select="mov_muxer"
3381 tgp_muxer_select="mov_muxer"
3382 vobsub_demuxer_select="mpegps_demuxer"
3383 w64_demuxer_select="wav_demuxer"
3384 w64_muxer_select="wav_muxer"
3385 wav_demuxer_select="riffdec"
3386 wav_muxer_select="riffenc"
3387 webm_chunk_muxer_select="webm_muxer"
3388 webm_muxer_select="riffenc"
3389 webm_dash_manifest_demuxer_select="matroska_demuxer"
3390 wtv_demuxer_select="mpegts_demuxer riffdec"
3391 wtv_muxer_select="mpegts_muxer riffenc"
3392 xmv_demuxer_select="riffdec"
3393 xwma_demuxer_select="riffdec"
3394
3395 # indevs / outdevs
3396 android_camera_indev_deps="android camera2ndk mediandk pthreads"
3397 android_camera_indev_extralibs="-landroid -lcamera2ndk -lmediandk"
3398 alsa_indev_deps="alsa"
3399 alsa_outdev_deps="alsa"
3400 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3401 avfoundation_indev_suggest="coregraphics applicationservices"
3402 avfoundation_indev_extralibs="-framework Foundation"
3403 audiotoolbox_outdev_deps="audiotoolbox pthreads"
3404 audiotoolbox_outdev_extralibs="-framework AudioToolbox -framework CoreAudio"
3405 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3406 caca_outdev_deps="libcaca"
3407 decklink_deps_any="libdl LoadLibrary"
3408 decklink_indev_deps="decklink threads"
3409 decklink_indev_extralibs="-lstdc++"
3410 decklink_outdev_deps="decklink threads"
3411 decklink_outdev_suggest="libklvanc"
3412 decklink_outdev_extralibs="-lstdc++"
3413 dshow_indev_deps="IBaseFilter"
3414 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3415 fbdev_indev_deps="linux_fb_h"
3416 fbdev_outdev_deps="linux_fb_h"
3417 gdigrab_indev_deps="CreateDIBSection"
3418 gdigrab_indev_extralibs="-lgdi32"
3419 gdigrab_indev_select="bmp_decoder"
3420 iec61883_indev_deps="libiec61883"
3421 jack_indev_deps="libjack"
3422 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3423 kmsgrab_indev_deps="libdrm"
3424 lavfi_indev_deps="avfilter"
3425 libcdio_indev_deps="libcdio"
3426 libdc1394_indev_deps="libdc1394"
3427 openal_indev_deps="openal"
3428 opengl_outdev_deps="opengl"
3429 opengl_outdev_suggest="sdl2"
3430 oss_indev_deps_any="sys_soundcard_h"
3431 oss_outdev_deps_any="sys_soundcard_h"
3432 pulse_indev_deps="libpulse"
3433 pulse_outdev_deps="libpulse"
3434 sdl2_outdev_deps="sdl2"
3435 sndio_indev_deps="sndio"
3436 sndio_outdev_deps="sndio"
3437 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3438 v4l2_indev_suggest="libv4l2"
3439 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3440 v4l2_outdev_suggest="libv4l2"
3441 vfwcap_indev_deps="vfw32 vfwcap_defines"
3442 xcbgrab_indev_deps="libxcb"
3443 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3444 xv_outdev_deps="xlib"
3445
3446 # protocols
3447 async_protocol_deps="threads"
3448 bluray_protocol_deps="libbluray"
3449 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3450 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl mbedtls"
3451 ffrtmpcrypt_protocol_select="tcp_protocol"
3452 ffrtmphttp_protocol_conflict="librtmp_protocol"
3453 ffrtmphttp_protocol_select="http_protocol"
3454 ftp_protocol_select="tcp_protocol"
3455 gopher_protocol_select="tcp_protocol"
3456 gophers_protocol_select="tls_protocol"
3457 http_protocol_select="tcp_protocol"
3458 http_protocol_suggest="zlib"
3459 httpproxy_protocol_select="tcp_protocol"
3460 httpproxy_protocol_suggest="zlib"
3461 https_protocol_select="tls_protocol"
3462 https_protocol_suggest="zlib"
3463 icecast_protocol_select="http_protocol"
3464 mmsh_protocol_select="http_protocol"
3465 mmst_protocol_select="network"
3466 rtmp_protocol_conflict="librtmp_protocol"
3467 rtmp_protocol_select="tcp_protocol"
3468 rtmp_protocol_suggest="zlib"
3469 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3470 rtmpe_protocol_suggest="zlib"
3471 rtmps_protocol_conflict="librtmp_protocol"
3472 rtmps_protocol_select="tls_protocol"
3473 rtmps_protocol_suggest="zlib"
3474 rtmpt_protocol_select="ffrtmphttp_protocol"
3475 rtmpt_protocol_suggest="zlib"
3476 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3477 rtmpte_protocol_suggest="zlib"
3478 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3479 rtmpts_protocol_suggest="zlib"
3480 rtp_protocol_select="udp_protocol"
3481 schannel_conflict="openssl gnutls libtls mbedtls"
3482 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3483 sctp_protocol_select="network"
3484 securetransport_conflict="openssl gnutls libtls mbedtls"
3485 srtp_protocol_select="rtp_protocol srtp"
3486 tcp_protocol_select="network"
3487 tls_protocol_deps_any="gnutls openssl schannel securetransport libtls mbedtls"
3488 tls_protocol_select="tcp_protocol"
3489 udp_protocol_select="network"
3490 udplite_protocol_select="network"
3491 unix_protocol_deps="sys_un_h"
3492 unix_protocol_select="network"
3493
3494 # external library protocols
3495 libamqp_protocol_deps="librabbitmq"
3496 libamqp_protocol_select="network"
3497 librist_protocol_deps="librist"
3498 librist_protocol_select="network"
3499 librtmp_protocol_deps="librtmp"
3500 librtmpe_protocol_deps="librtmp"
3501 librtmps_protocol_deps="librtmp"
3502 librtmpt_protocol_deps="librtmp"
3503 librtmpte_protocol_deps="librtmp"
3504 libsmbclient_protocol_deps="libsmbclient gplv3"
3505 libsrt_protocol_deps="libsrt"
3506 libsrt_protocol_select="network"
3507 libssh_protocol_deps="libssh"
3508 libtls_conflict="openssl gnutls mbedtls"
3509 libzmq_protocol_deps="libzmq"
3510 libzmq_protocol_select="network"
3511
3512 # filters
3513 afftdn_filter_deps="avcodec"
3514 afftdn_filter_select="fft"
3515 afftfilt_filter_deps="avcodec"
3516 afftfilt_filter_select="fft"
3517 afir_filter_deps="avcodec"
3518 afir_filter_select="rdft"
3519 amovie_filter_deps="avcodec avformat"
3520 aresample_filter_deps="swresample"
3521 asoftclip_filter_deps="swresample"
3522 asr_filter_deps="pocketsphinx"
3523 ass_filter_deps="libass"
3524 atempo_filter_deps="avcodec"
3525 atempo_filter_select="rdft"
3526 avgblur_opencl_filter_deps="opencl"
3527 avgblur_vulkan_filter_deps="vulkan libglslang"
3528 azmq_filter_deps="libzmq"
3529 blackframe_filter_deps="gpl"
3530 bm3d_filter_deps="avcodec"
3531 bm3d_filter_select="dct"
3532 boxblur_filter_deps="gpl"
3533 boxblur_opencl_filter_deps="opencl gpl"
3534 bs2b_filter_deps="libbs2b"
3535 chromaber_vulkan_filter_deps="vulkan libglslang"
3536 colorkey_opencl_filter_deps="opencl"
3537 colormatrix_filter_deps="gpl"
3538 convolution_opencl_filter_deps="opencl"
3539 convolve_filter_deps="avcodec"
3540 convolve_filter_select="fft"
3541 coreimage_filter_deps="coreimage appkit"
3542 coreimage_filter_extralibs="-framework OpenGL"
3543 coreimagesrc_filter_deps="coreimage appkit"
3544 coreimagesrc_filter_extralibs="-framework OpenGL"
3545 cover_rect_filter_deps="avcodec avformat gpl"
3546 cropdetect_filter_deps="gpl"
3547 deconvolve_filter_deps="avcodec"
3548 deconvolve_filter_select="fft"
3549 deinterlace_qsv_filter_deps="libmfx"
3550 deinterlace_vaapi_filter_deps="vaapi"
3551 delogo_filter_deps="gpl"
3552 denoise_vaapi_filter_deps="vaapi"
3553 derain_filter_select="dnn"
3554 deshake_filter_select="pixelutils"
3555 deshake_opencl_filter_deps="opencl"
3556 dilation_opencl_filter_deps="opencl"
3557 dnn_processing_filter_select="dnn"
3558 drawtext_filter_deps="libfreetype"
3559 drawtext_filter_suggest="libfontconfig libfribidi"
3560 elbg_filter_deps="avcodec"
3561 eq_filter_deps="gpl"
3562 erosion_opencl_filter_deps="opencl"
3563 fftfilt_filter_deps="avcodec"
3564 fftfilt_filter_select="rdft"
3565 fftdnoiz_filter_deps="avcodec"
3566 fftdnoiz_filter_select="fft"
3567 find_rect_filter_deps="avcodec avformat gpl"
3568 firequalizer_filter_deps="avcodec"
3569 firequalizer_filter_select="rdft"
3570 flite_filter_deps="libflite"
3571 framerate_filter_select="scene_sad"
3572 freezedetect_filter_select="scene_sad"
3573 frei0r_filter_deps="frei0r libdl"
3574 frei0r_src_filter_deps="frei0r libdl"
3575 fspp_filter_deps="gpl"
3576 headphone_filter_select="fft"
3577 histeq_filter_deps="gpl"
3578 hqdn3d_filter_deps="gpl"
3579 interlace_filter_deps="gpl"
3580 kerndeint_filter_deps="gpl"
3581 ladspa_filter_deps="ladspa libdl"
3582 lensfun_filter_deps="liblensfun version3"
3583 lv2_filter_deps="lv2"
3584 mcdeint_filter_deps="avcodec gpl"
3585 movie_filter_deps="avcodec avformat"
3586 mpdecimate_filter_deps="gpl"
3587 mpdecimate_filter_select="pixelutils"
3588 minterpolate_filter_select="scene_sad"
3589 mptestsrc_filter_deps="gpl"
3590 negate_filter_deps="lut_filter"
3591 nlmeans_opencl_filter_deps="opencl"
3592 nnedi_filter_deps="gpl"
3593 ocr_filter_deps="libtesseract"
3594 ocv_filter_deps="libopencv"
3595 openclsrc_filter_deps="opencl"
3596 overlay_opencl_filter_deps="opencl"
3597 overlay_qsv_filter_deps="libmfx"
3598 overlay_qsv_filter_select="qsvvpp"
3599 overlay_vulkan_filter_deps="vulkan libglslang"
3600 owdenoise_filter_deps="gpl"
3601 pad_opencl_filter_deps="opencl"
3602 pan_filter_deps="swresample"
3603 perspective_filter_deps="gpl"
3604 phase_filter_deps="gpl"
3605 pp7_filter_deps="gpl"
3606 pp_filter_deps="gpl postproc"
3607 prewitt_opencl_filter_deps="opencl"
3608 procamp_vaapi_filter_deps="vaapi"
3609 program_opencl_filter_deps="opencl"
3610 pullup_filter_deps="gpl"
3611 removelogo_filter_deps="avcodec avformat swscale"
3612 repeatfields_filter_deps="gpl"
3613 resample_filter_deps="avresample"
3614 roberts_opencl_filter_deps="opencl"
3615 rubberband_filter_deps="librubberband"
3616 sab_filter_deps="gpl swscale"
3617 scale2ref_filter_deps="swscale"
3618 scale_filter_deps="swscale"
3619 scale_qsv_filter_deps="libmfx"
3620 scdet_filter_select="scene_sad"
3621 select_filter_select="scene_sad"
3622 sharpness_vaapi_filter_deps="vaapi"
3623 showcqt_filter_deps="avcodec avformat swscale"
3624 showcqt_filter_suggest="libfontconfig libfreetype"
3625 showcqt_filter_select="fft"
3626 showfreqs_filter_deps="avcodec"
3627 showfreqs_filter_select="fft"
3628 showspatial_filter_select="fft"
3629 showspectrum_filter_deps="avcodec"
3630 showspectrum_filter_select="fft"
3631 showspectrumpic_filter_deps="avcodec"
3632 showspectrumpic_filter_select="fft"
3633 signature_filter_deps="gpl avcodec avformat"
3634 sinc_filter_select="rdft"
3635 smartblur_filter_deps="gpl swscale"
3636 sobel_opencl_filter_deps="opencl"
3637 sofalizer_filter_deps="libmysofa avcodec"
3638 sofalizer_filter_select="fft"
3639 spectrumsynth_filter_deps="avcodec"
3640 spectrumsynth_filter_select="fft"
3641 spp_filter_deps="gpl avcodec"
3642 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3643 sr_filter_deps="avformat swscale"
3644 sr_filter_select="dnn"
3645 stereo3d_filter_deps="gpl"
3646 subtitles_filter_deps="avformat avcodec libass"
3647 super2xsai_filter_deps="gpl"
3648 pixfmts_super2xsai_test_deps="super2xsai_filter"
3649 superequalizer_filter_select="rdft"
3650 surround_filter_select="rdft"
3651 tinterlace_filter_deps="gpl"
3652 tinterlace_merge_test_deps="tinterlace_filter"
3653 tinterlace_pad_test_deps="tinterlace_filter"
3654 tonemap_filter_deps="const_nan"
3655 tonemap_vaapi_filter_deps="vaapi VAProcFilterParameterBufferHDRToneMapping"
3656 tonemap_opencl_filter_deps="opencl const_nan"
3657 transpose_opencl_filter_deps="opencl"
3658 transpose_vaapi_filter_deps="vaapi VAProcPipelineCaps_rotation_flags"
3659 unsharp_opencl_filter_deps="opencl"
3660 uspp_filter_deps="gpl avcodec"
3661 vaguedenoiser_filter_deps="gpl"
3662 vidstabdetect_filter_deps="libvidstab"
3663 vidstabtransform_filter_deps="libvidstab"
3664 libvmaf_filter_deps="libvmaf pthreads"
3665 zmq_filter_deps="libzmq"
3666 zoompan_filter_deps="swscale"
3667 zscale_filter_deps="libzimg const_nan"
3668 scale_vaapi_filter_deps="vaapi"
3669 scale_vulkan_filter_deps="vulkan libglslang"
3670 vpp_qsv_filter_deps="libmfx"
3671 vpp_qsv_filter_select="qsvvpp"
3672 xfade_opencl_filter_deps="opencl"
3673 yadif_cuda_filter_deps="ffnvcodec"
3674 yadif_cuda_filter_deps_any="cuda_nvcc cuda_llvm"
3675
3676 # examples
3677 avio_list_dir_deps="avformat avutil"
3678 avio_reading_deps="avformat avcodec avutil"
3679 decode_audio_example_deps="avcodec avutil"
3680 decode_video_example_deps="avcodec avutil"
3681 demuxing_decoding_example_deps="avcodec avformat avutil"
3682 encode_audio_example_deps="avcodec avutil"
3683 encode_video_example_deps="avcodec avutil"
3684 extract_mvs_example_deps="avcodec avformat avutil"
3685 filter_audio_example_deps="avfilter avutil"
3686 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3687 filtering_video_example_deps="avfilter avcodec avformat avutil"
3688 http_multiclient_example_deps="avformat avutil fork"
3689 hw_decode_example_deps="avcodec avformat avutil"
3690 metadata_example_deps="avformat avutil"
3691 muxing_example_deps="avcodec avformat avutil swscale"
3692 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3693 remuxing_example_deps="avcodec avformat avutil"
3694 resampling_audio_example_deps="avutil swresample"
3695 scaling_video_example_deps="avutil swscale"
3696 transcode_aac_example_deps="avcodec avformat swresample"
3697 transcoding_example_deps="avfilter avcodec avformat avutil"
3698 vaapi_encode_example_deps="avcodec avutil h264_vaapi_encoder"
3699 vaapi_transcode_example_deps="avcodec avformat avutil h264_vaapi_encoder"
3700
3701 # EXTRALIBS_LIST
3702 cpu_init_extralibs="pthreads_extralibs"
3703 cws2fws_extralibs="zlib_extralibs"
3704
3705 # libraries, in any order
3706 avcodec_deps="avutil"
3707 avcodec_suggest="libm"
3708 avcodec_select="null_bsf"
3709 avdevice_deps="avformat avcodec avutil"
3710 avdevice_suggest="libm"
3711 avfilter_deps="avutil"
3712 avfilter_suggest="libm"
3713 avformat_deps="avcodec avutil"
3714 avformat_suggest="libm network zlib"
3715 avresample_deps="avutil"
3716 avresample_suggest="libm"
3717 avutil_suggest="clock_gettime ffnvcodec libm libdrm libmfx opencl user32 vaapi vulkan videotoolbox corefoundation corevideo coremedia bcrypt"
3718 postproc_deps="avutil gpl"
3719 postproc_suggest="libm"
3720 swresample_deps="avutil"
3721 swresample_suggest="libm libsoxr"
3722 swscale_deps="avutil"
3723 swscale_suggest="libm"
3724
3725 avcodec_extralibs="pthreads_extralibs iconv_extralibs dxva2_extralibs"
3726 avfilter_extralibs="pthreads_extralibs"
3727 avutil_extralibs="d3d11va_extralibs nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3728
3729 # programs
3730 ffmpeg_deps="avcodec avfilter avformat"
3731 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3732                hflip_filter null_filter
3733                transpose_filter trim_filter vflip_filter"
3734 ffmpeg_suggest="ole32 psapi shell32"
3735 ffplay_deps="avcodec avformat swscale swresample sdl2"
3736 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3737 ffplay_suggest="shell32"
3738 ffprobe_deps="avcodec avformat"
3739 ffprobe_suggest="shell32"
3740
3741 # documentation
3742 podpages_deps="perl"
3743 manpages_deps="perl pod2man"
3744 htmlpages_deps="perl"
3745 htmlpages_deps_any="makeinfo_html texi2html"
3746 txtpages_deps="perl makeinfo"
3747 doc_deps_any="manpages htmlpages podpages txtpages"
3748
3749 # default parameters
3750
3751 logfile="ffbuild/config.log"
3752
3753 # installation paths
3754 prefix_default="/usr/local"
3755 bindir_default='${prefix}/bin'
3756 datadir_default='${prefix}/share/ffmpeg'
3757 docdir_default='${prefix}/share/doc/ffmpeg'
3758 incdir_default='${prefix}/include'
3759 libdir_default='${prefix}/lib'
3760 mandir_default='${prefix}/share/man'
3761
3762 # toolchain
3763 ar_default="ar"
3764 cc_default="gcc"
3765 cxx_default="g++"
3766 host_cc_default="gcc"
3767 doxygen_default="doxygen"
3768 install="install"
3769 ln_s_default="ln -s -f"
3770 nm_default="nm -g"
3771 pkg_config_default=pkg-config
3772 ranlib_default="ranlib"
3773 strip_default="strip"
3774 version_script='--version-script'
3775 objformat="elf32"
3776 x86asmexe_default="nasm"
3777 windres_default="windres"
3778 striptype="direct"
3779
3780 # OS
3781 target_os_default=$(tolower $(uname -s))
3782 host_os=$target_os_default
3783
3784 # machine
3785 if test "$target_os_default" = aix; then
3786     arch_default=$(uname -p)
3787     strip_default="strip -X32_64"
3788     nm_default="nm -g -X32_64"
3789 else
3790     arch_default=$(uname -m)
3791 fi
3792 cpu="generic"
3793 intrinsics="none"
3794
3795 # configurable options
3796 enable $PROGRAM_LIST
3797 enable $DOCUMENT_LIST
3798 enable $EXAMPLE_LIST
3799 enable $(filter_out avresample $LIBRARY_LIST)
3800 enable stripping
3801
3802 enable asm
3803 enable debug
3804 enable doc
3805 enable faan faandct faanidct
3806 enable large_tests
3807 enable optimizations
3808 enable runtime_cpudetect
3809 enable safe_bitstream_reader
3810 enable static
3811 enable swscale_alpha
3812 enable valgrind_backtrace
3813
3814 sws_max_filter_size_default=256
3815 set_default sws_max_filter_size
3816
3817 # internal components are enabled by default
3818 enable $EXTRALIBS_LIST
3819
3820 # Avoid external, non-system, libraries getting enabled by dependency resolution
3821 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3822
3823 # build settings
3824 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3825 LIBPREF="lib"
3826 LIBSUF=".a"
3827 FULLNAME='$(NAME)$(BUILDSUF)'
3828 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3829 SLIBPREF="lib"
3830 SLIBSUF=".so"
3831 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3832 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3833 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3834 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3835 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3836 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3837 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3838
3839 asflags_filter=echo
3840 cflags_filter=echo
3841 ldflags_filter=echo
3842
3843 AS_C='-c'
3844 AS_O='-o $@'
3845 CC_C='-c'
3846 CC_E='-E -o $@'
3847 CC_O='-o $@'
3848 CXX_C='-c'
3849 CXX_O='-o $@'
3850 OBJCC_C='-c'
3851 OBJCC_E='-E -o $@'
3852 OBJCC_O='-o $@'
3853 X86ASM_O='-o $@'
3854 LD_O='-o $@'
3855 LD_LIB='-l%'
3856 LD_PATH='-L'
3857 HOSTCC_C='-c'
3858 HOSTCC_E='-E -o $@'
3859 HOSTCC_O='-o $@'
3860 HOSTLD_O='-o $@'
3861 NVCC_C='-c'
3862 NVCC_O='-o $@'
3863
3864 host_extralibs='-lm'
3865 host_cflags_filter=echo
3866 host_ldflags_filter=echo
3867
3868 target_path='$(CURDIR)'
3869
3870 # since the object filename is not given with the -MM flag, the compiler
3871 # is only able to print the basename, and we must add the path ourselves
3872 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3873 DEPFLAGS='-MM'
3874
3875 mkdir -p ffbuild
3876
3877 # find source path
3878 if test -f configure; then
3879     source_path=.
3880 elif test -f src/configure; then
3881     source_path=src
3882 else
3883     source_path=$(cd $(dirname "$0"); pwd)
3884     case "$source_path" in
3885         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3886     esac
3887     test -e "$source_path/config.h" &&
3888         die "Out of tree builds are impossible with config.h in source dir."
3889 fi
3890
3891 for v in "$@"; do
3892     r=${v#*=}
3893     l=${v%"$r"}
3894     r=$(sh_quote "$r")
3895     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3896 done
3897
3898 find_things_extern(){
3899     thing=$1
3900     pattern=$2
3901     file=$source_path/$3
3902     out=${4:-$thing}
3903     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$out/p" "$file"
3904 }
3905
3906 find_filters_extern(){
3907     file=$source_path/$1
3908     sed -n 's/^extern AVFilter ff_[avfsinkrc]\{2,5\}_\([[:alnum:]_]\{1,\}\);/\1_filter/p' $file
3909 }
3910
3911 FILTER_LIST=$(find_filters_extern libavfilter/allfilters.c)
3912 OUTDEV_LIST=$(find_things_extern muxer AVOutputFormat libavdevice/alldevices.c outdev)
3913 INDEV_LIST=$(find_things_extern demuxer AVInputFormat libavdevice/alldevices.c indev)
3914 MUXER_LIST=$(find_things_extern muxer AVOutputFormat libavformat/allformats.c)
3915 DEMUXER_LIST=$(find_things_extern demuxer AVInputFormat libavformat/allformats.c)
3916 ENCODER_LIST=$(find_things_extern encoder AVCodec libavcodec/allcodecs.c)
3917 DECODER_LIST=$(find_things_extern decoder AVCodec libavcodec/allcodecs.c)
3918 CODEC_LIST="
3919     $ENCODER_LIST
3920     $DECODER_LIST
3921 "
3922 PARSER_LIST=$(find_things_extern parser AVCodecParser libavcodec/parsers.c)
3923 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3924 HWACCEL_LIST=$(find_things_extern hwaccel AVHWAccel libavcodec/hwaccels.h)
3925 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3926
3927 AVCODEC_COMPONENTS_LIST="
3928     $BSF_LIST
3929     $DECODER_LIST
3930     $ENCODER_LIST
3931     $HWACCEL_LIST
3932     $PARSER_LIST
3933 "
3934
3935 AVDEVICE_COMPONENTS_LIST="
3936     $INDEV_LIST
3937     $OUTDEV_LIST
3938 "
3939
3940 AVFILTER_COMPONENTS_LIST="
3941     $FILTER_LIST
3942 "
3943
3944 AVFORMAT_COMPONENTS_LIST="
3945     $DEMUXER_LIST
3946     $MUXER_LIST
3947     $PROTOCOL_LIST
3948 "
3949
3950 ALL_COMPONENTS="
3951     $AVCODEC_COMPONENTS_LIST
3952     $AVDEVICE_COMPONENTS_LIST
3953     $AVFILTER_COMPONENTS_LIST
3954     $AVFORMAT_COMPONENTS_LIST
3955 "
3956
3957 for n in $COMPONENT_LIST; do
3958     v=$(toupper ${n%s})_LIST
3959     eval enable \$$v
3960     eval ${n}_if_any="\$$v"
3961 done
3962
3963 enable $ARCH_EXT_LIST
3964
3965 die_unknown(){
3966     echo "Unknown option \"$1\"."
3967     echo "See $0 --help for available options."
3968     exit 1
3969 }
3970
3971 print_in_columns() {
3972     tr ' ' '\n' | sort | tr '\r\n' '  ' | awk -v col_width=24 -v width="$ncols" '
3973     {
3974         num_cols = width > col_width ? int(width / col_width) : 1;
3975         num_rows = int((NF + num_cols-1) / num_cols);
3976         y = x = 1;
3977         for (y = 1; y <= num_rows; y++) {
3978             i = y;
3979             for (x = 1; x <= num_cols; x++) {
3980                 if (i <= NF) {
3981                   line = sprintf("%s%-" col_width "s", line, $i);
3982                 }
3983                 i = i + num_rows;
3984             }
3985             print line; line = "";
3986         }
3987     }' | sed 's/ *$//'
3988 }
3989
3990 show_list() {
3991     suffix=_$1
3992     shift
3993     echo $* | sed s/$suffix//g | print_in_columns
3994     exit 0
3995 }
3996
3997 rand_list(){
3998     IFS=', '
3999     set -- $*
4000     unset IFS
4001     for thing; do
4002         comp=${thing%:*}
4003         prob=${thing#$comp}
4004         prob=${prob#:}
4005         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
4006         echo "prob ${prob:-0.5}"
4007         printf '%s\n' $comp
4008     done
4009 }
4010
4011 do_random(){
4012     action=$1
4013     shift
4014     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
4015     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
4016 }
4017
4018 for opt do
4019     optval="${opt#*=}"
4020     case "$opt" in
4021         --extra-ldflags=*)
4022             add_ldflags $optval
4023         ;;
4024         --extra-ldexeflags=*)
4025             add_ldexeflags $optval
4026         ;;
4027         --extra-ldsoflags=*)
4028             add_ldsoflags $optval
4029         ;;
4030         --extra-ldlibflags=*)
4031             warn "The --extra-ldlibflags option is only provided for compatibility and will be\n"\
4032                  "removed in the future. Use --extra-ldsoflags instead."
4033             add_ldsoflags $optval
4034         ;;
4035         --extra-libs=*)
4036             add_extralibs $optval
4037         ;;
4038         --disable-devices)
4039             disable $INDEV_LIST $OUTDEV_LIST
4040         ;;
4041         --enable-debug=*)
4042             debuglevel="$optval"
4043         ;;
4044         --disable-programs)
4045             disable $PROGRAM_LIST
4046         ;;
4047         --disable-everything)
4048             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
4049         ;;
4050         --disable-all)
4051             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
4052             disable $LIBRARY_LIST $PROGRAM_LIST doc
4053             enable avutil
4054         ;;
4055         --enable-random|--disable-random)
4056             action=${opt%%-random}
4057             do_random ${action#--} $COMPONENT_LIST
4058         ;;
4059         --enable-random=*|--disable-random=*)
4060             action=${opt%%-random=*}
4061             do_random ${action#--} $optval
4062         ;;
4063         --enable-sdl)
4064             enable sdl2
4065         ;;
4066         --enable-*=*|--disable-*=*)
4067             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
4068             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
4069             eval list=\$$(toupper $thing)_LIST
4070             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
4071             list=$(filter "$name" $list)
4072             [ "$list" = "" ] && warn "Option $opt did not match anything"
4073             test $action = enable && warn_if_gets_disabled $list
4074             $action $list
4075         ;;
4076         --enable-yasm|--disable-yasm)
4077             warn "The ${opt} option is only provided for compatibility and will be\n"\
4078                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
4079             test $opt = --enable-yasm && x86asm=yes || x86asm=no
4080         ;;
4081         --yasmexe=*)
4082             warn "The --yasmexe option is only provided for compatibility and will be\n"\
4083                  "removed in the future. Use --x86asmexe instead."
4084             x86asmexe="$optval"
4085         ;;
4086         --enable-?*|--disable-?*)
4087             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
4088             if is_in $option $COMPONENT_LIST; then
4089                 test $action = disable && action=unset
4090                 eval $action \$$(toupper ${option%s})_LIST
4091             elif is_in $option $CMDLINE_SELECT; then
4092                 $action $option
4093             else
4094                 die_unknown $opt
4095             fi
4096         ;;
4097         --list-*)
4098             NAME="${opt#--list-}"
4099             is_in $NAME $COMPONENT_LIST || die_unknown $opt
4100             NAME=${NAME%s}
4101             eval show_list $NAME \$$(toupper $NAME)_LIST
4102         ;;
4103         --help|-h) show_help
4104         ;;
4105         --quiet|-q) quiet=yes
4106         ;;
4107         --fatal-warnings) enable fatal_warnings
4108         ;;
4109         --libfuzzer=*)
4110             libfuzzer_path="$optval"
4111         ;;
4112         *)
4113             optname="${opt%%=*}"
4114             optname="${optname#--}"
4115             optname=$(echo "$optname" | sed 's/-/_/g')
4116             if is_in $optname $CMDLINE_SET; then
4117                 eval $optname='$optval'
4118             elif is_in $optname $CMDLINE_APPEND; then
4119                 append $optname "$optval"
4120             else
4121                 die_unknown $opt
4122             fi
4123         ;;
4124     esac
4125 done
4126
4127 for e in $env; do
4128     eval "export $e"
4129 done
4130
4131 if disabled autodetect; then
4132
4133     # Unless iconv is explicitely disabled by the user, we still want to probe
4134     # for the iconv from the libc.
4135     disabled iconv || enable libc_iconv
4136
4137     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
4138     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
4139 fi
4140 # Mark specifically enabled, but normally autodetected libraries as requested.
4141 for lib in $AUTODETECT_LIBS; do
4142     enabled $lib && request $lib
4143 done
4144 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
4145 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
4146 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
4147
4148 disabled logging && logfile=/dev/null
4149
4150 # command line configuration sanity checks
4151
4152 # we need to build at least one lib type
4153 if ! enabled_any static shared; then
4154     cat <<EOF
4155 At least one library type must be built.
4156 Specify --enable-static to build the static libraries or --enable-shared to
4157 build the shared libraries as well. To only build the shared libraries specify
4158 --disable-static in addition to --enable-shared.
4159 EOF
4160     exit 1
4161 fi
4162
4163 die_license_disabled() {
4164     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
4165 }
4166
4167 die_license_disabled_gpl() {
4168     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
4169 }
4170
4171 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
4172 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
4173
4174 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
4175 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
4176
4177 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4178
4179 if enabled nonfree; then
4180     license="nonfree and unredistributable"
4181 elif enabled gplv3; then
4182     license="GPL version 3 or later"
4183 elif enabled lgplv3; then
4184     license="LGPL version 3 or later"
4185 elif enabled gpl; then
4186     license="GPL version 2 or later"
4187 else
4188     license="LGPL version 2.1 or later"
4189 fi
4190
4191 enabled_all gnutls openssl &&
4192     die "GnuTLS and OpenSSL must not be enabled at the same time."
4193
4194 enabled_all gnutls mbedtls &&
4195     die "GnuTLS and mbedTLS must not be enabled at the same time."
4196
4197 enabled_all openssl mbedtls &&
4198     die "OpenSSL and mbedTLS must not be enabled at the same time."
4199
4200 # Disable all the library-specific components if the library itself
4201 # is disabled, see AVCODEC_LIST and following _LIST variables.
4202
4203 disable_components(){
4204     disabled ${1} && disable $(
4205         eval components="\$$(toupper ${1})_COMPONENTS"
4206         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
4207     )
4208 }
4209
4210 map 'disable_components $v' $LIBRARY_LIST
4211
4212 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
4213 set >> $logfile
4214
4215 test -n "$valgrind" && toolchain="valgrind-memcheck"
4216
4217 enabled ossfuzz && ! echo $CFLAGS | grep -q -- "-fsanitize="  && ! echo $CFLAGS | grep -q -- "-fcoverage-mapping" &&{
4218     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
4219     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
4220 }
4221
4222 case "$toolchain" in
4223     *-asan)
4224         cc_default="${toolchain%-asan}"
4225         add_cflags  -fsanitize=address
4226         add_ldflags -fsanitize=address
4227     ;;
4228     *-msan)
4229         cc_default="${toolchain%-msan}"
4230         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
4231         add_ldflags -fsanitize=memory
4232     ;;
4233     *-tsan)
4234         cc_default="${toolchain%-tsan}"
4235         add_cflags  -fsanitize=thread
4236         add_ldflags -fsanitize=thread
4237         case "$toolchain" in
4238             gcc-tsan)
4239                 add_cflags  -fPIC
4240                 add_ldflags -fPIC
4241                 ;;
4242         esac
4243     ;;
4244     *-usan)
4245         cc_default="${toolchain%-usan}"
4246         add_cflags  -fsanitize=undefined
4247         add_ldflags -fsanitize=undefined
4248     ;;
4249     valgrind-*)
4250         target_exec_default="valgrind"
4251         case "$toolchain" in
4252             valgrind-massif)
4253                 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"
4254                 ;;
4255             valgrind-memcheck)
4256                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
4257                 ;;
4258         esac
4259     ;;
4260     msvc)
4261         # Check whether the current MSVC version needs the C99 converter.
4262         # From MSVC 2013 (compiler major version 18) onwards, it does actually
4263         # support enough of C99 to build ffmpeg. Default to the new
4264         # behaviour if the regexp was unable to match anything, since this
4265         # successfully parses the version number of existing supported
4266         # versions that require the converter (MSVC 2010 and 2012).
4267         cl_major_ver=$(cl.exe 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
4268         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
4269             cc_default="cl.exe"
4270             cxx_default="cl.exe"
4271         else
4272             die "Unsupported MSVC version (2013 or newer required)"
4273         fi
4274         ld_default="$source_path/compat/windows/mslink"
4275         nm_default="dumpbin.exe -symbols"
4276         ar_default="lib.exe"
4277         case "${arch:-$arch_default}" in
4278         aarch64|arm64)
4279             as_default="armasm64.exe"
4280             ;;
4281         arm*)
4282             as_default="armasm.exe"
4283             ;;
4284         esac
4285         target_os_default="win32"
4286         # Use a relative path for TMPDIR. This makes sure all the
4287         # ffconf temp files are written with a relative path, avoiding
4288         # issues with msys/win32 path conversion for MSVC parameters
4289         # such as -Fo<file> or -out:<file>.
4290         TMPDIR=.
4291     ;;
4292     icl)
4293         cc_default="icl"
4294         ld_default="xilink"
4295         nm_default="dumpbin -symbols"
4296         ar_default="xilib"
4297         target_os_default="win32"
4298         TMPDIR=.
4299     ;;
4300     gcov)
4301         add_cflags  -fprofile-arcs -ftest-coverage
4302         add_ldflags -fprofile-arcs -ftest-coverage
4303     ;;
4304     llvm-cov)
4305         add_cflags -fprofile-arcs -ftest-coverage
4306         add_ldflags --coverage
4307     ;;
4308     hardened)
4309         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
4310         add_cflags   -fno-strict-overflow -fstack-protector-all
4311         add_ldflags  -Wl,-z,relro -Wl,-z,now
4312         add_cflags   -fPIE
4313         add_ldexeflags -fPIE -pie
4314     ;;
4315     ?*)
4316         die "Unknown toolchain $toolchain"
4317     ;;
4318 esac
4319
4320 if test -n "$cross_prefix"; then
4321     test -n "$arch" && test -n "$target_os" ||
4322         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
4323     enable cross_compile
4324 fi
4325
4326 set_default target_os
4327 if test "$target_os" = android; then
4328     cc_default="clang"
4329 fi
4330
4331 ar_default="${cross_prefix}${ar_default}"
4332 cc_default="${cross_prefix}${cc_default}"
4333 cxx_default="${cross_prefix}${cxx_default}"
4334 nm_default="${cross_prefix}${nm_default}"
4335 pkg_config_default="${cross_prefix}${pkg_config_default}"
4336 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
4337     ranlib_default="${cross_prefix}${ranlib_default} -D"
4338 else
4339     ranlib_default="${cross_prefix}${ranlib_default}"
4340 fi
4341 strip_default="${cross_prefix}${strip_default}"
4342 windres_default="${cross_prefix}${windres_default}"
4343
4344 sysinclude_default="${sysroot}/usr/include"
4345
4346 if enabled cuda_sdk; then
4347     warn "Option --enable-cuda-sdk is deprecated. Use --enable-cuda-nvcc instead."
4348     enable cuda_nvcc
4349 fi
4350
4351 if enabled cuda_nvcc; then
4352     nvcc_default="nvcc"
4353     nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
4354 else
4355     nvcc_default="clang"
4356     nvccflags_default="--cuda-gpu-arch=sm_30 -O2"
4357     NVCC_C=""
4358 fi
4359
4360 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
4361     target_exec x86asmexe nvcc
4362 enabled cross_compile || host_cc_default=$cc
4363 set_default host_cc
4364
4365 pkg_config_fail_message=""
4366 if ! $pkg_config --version >/dev/null 2>&1; then
4367     warn "$pkg_config not found, library detection may fail."
4368     pkg_config=false
4369 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
4370     pkg_config_fail_message="
4371 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
4372 fi
4373
4374 if test $doxygen != $doxygen_default && \
4375   ! $doxygen --version >/dev/null 2>&1; then
4376     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
4377 fi
4378
4379 exesuf() {
4380     case $1 in
4381         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
4382     esac
4383 }
4384
4385 EXESUF=$(exesuf $target_os)
4386 HOSTEXESUF=$(exesuf $host_os)
4387
4388 # set temporary file name
4389 : ${TMPDIR:=$TEMPDIR}
4390 : ${TMPDIR:=$TMP}
4391 : ${TMPDIR:=/tmp}
4392
4393 if [ -n "$tempprefix" ] ; then
4394     mktemp(){
4395         tmpname="$tempprefix.${HOSTNAME}.${UID}"
4396         echo "$tmpname"
4397         mkdir "$tmpname"
4398     }
4399 elif ! test_cmd mktemp -u XXXXXX; then
4400     # simple replacement for missing mktemp
4401     # NOT SAFE FOR GENERAL USE
4402     mktemp(){
4403         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
4404         echo "$tmpname"
4405         mkdir "$tmpname"
4406     }
4407 fi
4408
4409 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
4410     die "Unable to create temporary directory in $TMPDIR."
4411
4412 tmpfile(){
4413     tmp="${FFTMPDIR}/test"$2
4414     (set -C; exec > $tmp) 2> /dev/null ||
4415         die "Unable to create temporary file in $FFTMPDIR."
4416     eval $1=$tmp
4417 }
4418
4419 trap 'rm -rf -- "$FFTMPDIR"' EXIT
4420 trap 'exit 2' INT
4421
4422 tmpfile TMPASM .asm
4423 tmpfile TMPC   .c
4424 tmpfile TMPCPP .cpp
4425 tmpfile TMPE   $EXESUF
4426 tmpfile TMPH   .h
4427 tmpfile TMPM   .m
4428 tmpfile TMPCU  .cu
4429 tmpfile TMPO   .o
4430 tmpfile TMPS   .S
4431 tmpfile TMPSH  .sh
4432 tmpfile TMPV   .ver
4433
4434 unset -f mktemp
4435
4436 chmod +x $TMPE
4437
4438 # make sure we can execute files in $TMPDIR
4439 cat > $TMPSH 2>> $logfile <<EOF
4440 #! /bin/sh
4441 EOF
4442 chmod +x $TMPSH >> $logfile 2>&1
4443 if ! $TMPSH >> $logfile 2>&1; then
4444     cat <<EOF
4445 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
4446 variable to another directory and make sure that it is not mounted noexec.
4447 EOF
4448     die "Sanity test failed."
4449 fi
4450
4451 armasm_flags(){
4452     for flag; do
4453         case $flag in
4454             # Filter out MSVC cl.exe options from cflags that shouldn't
4455             # be passed to gas-preprocessor
4456             -M[TD]*)                                            ;;
4457             *)                  echo $flag                      ;;
4458         esac
4459    done
4460 }
4461
4462 cparser_flags(){
4463     for flag; do
4464         case $flag in
4465             -Wno-switch)             echo -Wno-switch-enum ;;
4466             -Wno-format-zero-length) ;;
4467             -Wdisabled-optimization) ;;
4468             -Wno-pointer-sign)       echo -Wno-other ;;
4469             *)                       echo $flag ;;
4470         esac
4471     done
4472 }
4473
4474 msvc_common_flags(){
4475     for flag; do
4476         case $flag in
4477             # In addition to specifying certain flags under the compiler
4478             # specific filters, they must be specified here as well or else the
4479             # generic catch all at the bottom will print the original flag.
4480             -Wall)                ;;
4481             -Wextra)              ;;
4482             -std=c*)              ;;
4483             # Common flags
4484             -fomit-frame-pointer) ;;
4485             -g)                   echo -Z7 ;;
4486             -fno-math-errno)      ;;
4487             -fno-common)          ;;
4488             -fno-signed-zeros)    ;;
4489             -fPIC)                ;;
4490             -mthumb)              ;;
4491             -march=*)             ;;
4492             -lz)                  echo zlib.lib ;;
4493             -lx264)               echo libx264.lib ;;
4494             -lstdc++)             ;;
4495             -l*)                  echo ${flag#-l}.lib ;;
4496             -LARGEADDRESSAWARE)   echo $flag ;;
4497             -L*)                  echo -libpath:${flag#-L} ;;
4498             -Wl,*)                ;;
4499             *)                    echo $flag ;;
4500         esac
4501     done
4502 }
4503
4504 msvc_flags(){
4505     msvc_common_flags "$@"
4506     for flag; do
4507         case $flag in
4508             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4509                                        -wd4554 ;;
4510             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4511                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4512                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4513                                        -wd4307 \
4514                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4515         esac
4516     done
4517 }
4518
4519 icl_flags(){
4520     msvc_common_flags "$@"
4521     for flag; do
4522         case $flag in
4523             # Despite what Intel's documentation says -Wall, which is supported
4524             # on Windows, does enable remarks so disable them here.
4525             -Wall)                echo $flag -Qdiag-disable:remark ;;
4526             -std=c99)             echo -Qstd=c99 ;;
4527             -flto)                echo -ipo ;;
4528         esac
4529     done
4530 }
4531
4532 icc_flags(){
4533     for flag; do
4534         case $flag in
4535             -flto)                echo -ipo ;;
4536             *)                    echo $flag ;;
4537         esac
4538     done
4539 }
4540
4541 suncc_flags(){
4542     for flag; do
4543         case $flag in
4544             -march=*|-mcpu=*)
4545                 case "${flag#*=}" in
4546                     native)                   echo -xtarget=native       ;;
4547                     v9|niagara)               echo -xarch=sparc          ;;
4548                     ultrasparc)               echo -xarch=sparcvis       ;;
4549                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4550                     i586|pentium)             echo -xchip=pentium        ;;
4551                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4552                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4553                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4554                     pentium4*)          echo -xtarget=pentium4           ;;
4555                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4556                     *-sse3)             echo -xarch=sse3                 ;;
4557                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4558                     bonnell)                   echo -xarch=ssse3         ;;
4559                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4560                     westmere)                  echo -xtarget=westmere    ;;
4561                     silvermont)                echo -xarch=sse4_2        ;;
4562                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4563                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4564                                                echo -xarch=avx           ;;
4565                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4566                     btver1)                    echo -xarch=amdsse4a      ;;
4567                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4568                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4569                     k8|opteron|athlon64|athlon-fx)
4570                                                echo -xarch=sse2a         ;;
4571                     athlon*)                   echo -xarch=pentium_proa  ;;
4572                 esac
4573                 ;;
4574             -std=c99)             echo -xc99              ;;
4575             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4576             -fPIC)                echo -KPIC -xcode=pic32 ;;
4577             -W*,*)                echo $flag              ;;
4578             -f*-*|-W*|-mimpure-text)                      ;;
4579             -shared)              echo -G                 ;;
4580             *)                    echo $flag              ;;
4581         esac
4582     done
4583 }
4584
4585 probe_cc(){
4586     pfx=$1
4587     _cc=$2
4588     first=$3
4589
4590     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4591     unset _ld_o _ldflags _ld_lib _ld_path
4592     unset _depflags _DEPCMD _DEPFLAGS
4593     _flags_filter=echo
4594
4595     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4596         true # no-op to avoid reading stdin in following checks
4597     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4598         _type=llvm_gcc
4599         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4600         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4601         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4602         _cflags_speed='-O3'
4603         _cflags_size='-Os'
4604     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4605         _type=gcc
4606         gcc_version=$($_cc --version | head -n1)
4607         gcc_basever=$($_cc -dumpversion)
4608         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4609         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4610         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4611         case $gcc_basever in
4612             2) ;;
4613             2.*) ;;
4614             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4615         esac
4616         if [ "$first" = true ]; then
4617             case $gcc_basever in
4618                 4.2*)
4619                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4620             esac
4621         fi
4622         _cflags_speed='-O3'
4623         _cflags_size='-Os'
4624     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4625         _type=icc
4626         _ident=$($_cc --version | head -n1)
4627         _depflags='-MMD'
4628         _cflags_speed='-O3'
4629         _cflags_size='-Os'
4630         _cflags_noopt='-O1'
4631         _flags_filter=icc_flags
4632     elif $_cc -v 2>&1 | grep -q xlc; then
4633         _type=xlc
4634         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4635         _cflags_speed='-O5'
4636         _cflags_size='-O5 -qcompact'
4637     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4638         test -d "$sysroot" || die "No valid sysroot specified."
4639         _type=armcc
4640         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4641         armcc_conf="$PWD/armcc.conf"
4642         $_cc --arm_linux_configure                 \
4643              --arm_linux_config_file="$armcc_conf" \
4644              --configure_sysroot="$sysroot"        \
4645              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4646              die "Error creating armcc configuration file."
4647         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4648         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4649         as_default="${cross_prefix}gcc"
4650         _depflags='-MMD'
4651         _cflags_speed='-O3'
4652         _cflags_size='-Os'
4653     elif $_cc -v 2>&1 | grep -q clang && ! $_cc -? > /dev/null 2>&1; then
4654         _type=clang
4655         _ident=$($_cc --version 2>/dev/null | head -n1)
4656         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4657         _cflags_speed='-O3'
4658         _cflags_size='-Oz'
4659     elif $_cc -V 2>&1 | grep -q Sun; then
4660         _type=suncc
4661         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4662         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4663         _DEPFLAGS='-xM1 -xc99'
4664         _ldflags='-std=c99'
4665         _cflags_speed='-O5'
4666         _cflags_size='-O5 -xspace'
4667         _flags_filter=suncc_flags
4668     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4669         _type=pathscale
4670         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4671         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4672         _cflags_speed='-O2'
4673         _cflags_size='-Os'
4674         _flags_filter='filter_out -Wdisabled-optimization'
4675     elif $_cc -v 2>&1 | grep -q Open64; then
4676         _type=open64
4677         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4678         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4679         _cflags_speed='-O2'
4680         _cflags_size='-Os'
4681         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4682     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4683         _type=armasm
4684         _ident=$($_cc | head -n1)
4685         # 4509: "This form of conditional instruction is deprecated"
4686         _flags="-nologo -ignore 4509"
4687         _flags_filter=armasm_flags
4688     elif $_cc 2>&1 | grep -q Intel; then
4689         _type=icl
4690         _ident=$($_cc 2>&1 | head -n1)
4691         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4692         # Not only is O3 broken on 13.x+ but it is slower on all previous
4693         # versions (tested) as well.
4694         _cflags_speed="-O2"
4695         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4696         if $_cc 2>&1 | grep -q Linker; then
4697             _ld_o='-out:$@'
4698         else
4699             _ld_o='-Fe$@'
4700         fi
4701         _cc_o='-Fo$@'
4702         _cc_e='-P'
4703         _flags_filter=icl_flags
4704         _ld_lib='lib%.a'
4705         _ld_path='-libpath:'
4706         # -Qdiag-error to make icl error when seeing certain unknown arguments
4707         _flags='-nologo -Qdiag-error:4044,10157'
4708         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4709         # with MSVC which enables it by default.
4710         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4711         disable stripping
4712     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4713         # lld can emulate multiple different linkers; in ms link.exe mode,
4714         # the -? parameter gives the help output which contains an identifyable
4715         # string, while it gives an error in other modes.
4716         _type=lld-link
4717         # The link.exe mode doesn't have a switch for getting the version,
4718         # but we can force it back to gnu mode and get the version from there.
4719         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4720         _ld_o='-out:$@'
4721         _flags_filter=msvc_flags
4722         _ld_lib='lib%.a'
4723         _ld_path='-libpath:'
4724     elif $_cc -nologo- 2>&1 | grep -q Microsoft || { $_cc -v 2>&1 | grep -q clang && $_cc -? > /dev/null 2>&1; }; then
4725         _type=msvc
4726         if $_cc -nologo- 2>&1 | grep -q Microsoft; then
4727             _ident=$($_cc 2>&1 | head -n1 | tr -d '\r')
4728         else
4729             _ident=$($_cc --version 2>/dev/null | head -n1 | tr -d '\r')
4730         fi
4731         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4732         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4733         _cflags_speed="-O2"
4734         _cflags_size="-O1"
4735         _cflags_noopt="-O1"
4736         if $_cc -nologo- 2>&1 | grep -q Linker; then
4737             _ld_o='-out:$@'
4738         else
4739             _ld_o='-Fe$@'
4740         fi
4741         _cc_o='-Fo$@'
4742         _cc_e='-P -Fi$@'
4743         _flags_filter=msvc_flags
4744         _ld_lib='lib%.a'
4745         _ld_path='-libpath:'
4746         _flags='-nologo'
4747         disable stripping
4748     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4749         _type=cparser
4750         _ident=$($_cc --version | head -n1)
4751         _depflags='-MMD'
4752         _cflags_speed='-O4'
4753         _cflags_size='-O2'
4754         _flags_filter=cparser_flags
4755     fi
4756
4757     eval ${pfx}_type=\$_type
4758     eval ${pfx}_ident=\$_ident
4759 }
4760
4761 set_ccvars(){
4762     eval ${1}_C=\${_cc_c-\${${1}_C}}
4763     eval ${1}_E=\${_cc_e-\${${1}_E}}
4764     eval ${1}_O=\${_cc_o-\${${1}_O}}
4765
4766     if [ -n "$_depflags" ]; then
4767         eval ${1}_DEPFLAGS=\$_depflags
4768     else
4769         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4770         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4771         eval DEP${1}FLAGS=\$_flags
4772     fi
4773 }
4774
4775 probe_cc cc "$cc" "true"
4776 cflags_filter=$_flags_filter
4777 cflags_speed=$_cflags_speed
4778 cflags_size=$_cflags_size
4779 cflags_noopt=$_cflags_noopt
4780 add_cflags $_flags $_cflags
4781 cc_ldflags=$_ldflags
4782 set_ccvars CC
4783 set_ccvars CXX
4784
4785 probe_cc hostcc "$host_cc"
4786 host_cflags_filter=$_flags_filter
4787 host_cflags_speed=$_cflags_speed
4788 add_host_cflags  $_flags $_cflags
4789 set_ccvars HOSTCC
4790
4791 test -n "$cc_type" && enable $cc_type ||
4792     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4793
4794 : ${as_default:=$cc}
4795 : ${objcc_default:=$cc}
4796 : ${dep_cc_default:=$cc}
4797 : ${ld_default:=$cc}
4798 : ${host_ld_default:=$host_cc}
4799 set_default ar as objcc dep_cc ld ln_s host_ld windres
4800
4801 probe_cc as "$as"
4802 asflags_filter=$_flags_filter
4803 add_asflags $_flags $_cflags
4804 set_ccvars AS
4805
4806 probe_cc objcc "$objcc"
4807 objcflags_filter=$_flags_filter
4808 add_objcflags $_flags $_cflags
4809 set_ccvars OBJC
4810
4811 probe_cc ld "$ld"
4812 ldflags_filter=$_flags_filter
4813 add_ldflags $_flags $_ldflags
4814 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4815 LD_O=${_ld_o-$LD_O}
4816 LD_LIB=${_ld_lib-$LD_LIB}
4817 LD_PATH=${_ld_path-$LD_PATH}
4818
4819 probe_cc hostld "$host_ld"
4820 host_ldflags_filter=$_flags_filter
4821 add_host_ldflags $_flags $_ldflags
4822 HOSTLD_O=${_ld_o-$HOSTLD_O}
4823
4824 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4825     probe_cc depcc "$dep_cc"
4826     CCDEP=${_DEPCMD:-$DEPCMD}
4827     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4828     DEPCCFLAGS=$_flags
4829 fi
4830
4831 if $ar 2>&1 | grep -q Microsoft; then
4832     arflags="-nologo"
4833     ar_o='-out:$@'
4834 elif $ar 2>&1 | grep -q "\[D\] "; then
4835     arflags="rcD"
4836     ar_o='$@'
4837 else
4838     arflags="rc"
4839     ar_o='$@'
4840 fi
4841
4842 add_cflags $extra_cflags
4843 add_cxxflags $extra_cxxflags
4844 add_objcflags $extra_objcflags
4845 add_asflags $extra_cflags
4846
4847 if test -n "$sysroot"; then
4848     case "$cc_type" in
4849         gcc|llvm_gcc|clang)
4850             add_cppflags --sysroot="$sysroot"
4851             add_ldflags --sysroot="$sysroot"
4852         ;;
4853     esac
4854 fi
4855
4856 if test "$cpu" = host; then
4857     enabled cross_compile &&
4858         warn "--cpu=host makes no sense when cross-compiling."
4859
4860     case "$cc_type" in
4861         gcc|llvm_gcc)
4862             check_native(){
4863                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4864                 sed -n "/cc1.*$1=/{
4865                             s/.*$1=\\([^ ]*\\).*/\\1/
4866                             p
4867                             q
4868                         }" $TMPE
4869             }
4870             cpu=$(check_native -march || check_native -mcpu)
4871         ;;
4872         clang)
4873             check_native(){
4874                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4875                 sed -n "/cc1.*-target-cpu /{
4876                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4877                             p
4878                             q
4879                         }" $TMPE
4880             }
4881             cpu=$(check_native -march)
4882         ;;
4883     esac
4884
4885     test "${cpu:-host}" = host &&
4886         die "--cpu=host not supported with compiler $cc"
4887 fi
4888
4889 # Deal with common $arch aliases
4890 case "$arch" in
4891     aarch64|arm64)
4892         arch="aarch64"
4893     ;;
4894     arm*|iPad*|iPhone*)
4895         arch="arm"
4896     ;;
4897     mips*|IP*)
4898         case "$arch" in
4899         *el)
4900             add_cppflags -EL
4901             add_ldflags -EL
4902         ;;
4903         *eb)
4904             add_cppflags -EB
4905             add_ldflags -EB
4906         ;;
4907         esac
4908         arch="mips"
4909     ;;
4910     parisc*|hppa*)
4911         arch="parisc"
4912     ;;
4913     "Power Macintosh"|ppc*|powerpc*)
4914         arch="ppc"
4915     ;;
4916     s390|s390x)
4917         arch="s390"
4918     ;;
4919     sh4|sh)
4920         arch="sh4"
4921     ;;
4922     sun4*|sparc*)
4923         arch="sparc"
4924     ;;
4925     tilegx|tile-gx)
4926         arch="tilegx"
4927     ;;
4928     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4929         arch="x86"
4930     ;;
4931 esac
4932
4933 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4934 enable $arch
4935
4936 # Add processor-specific flags
4937 if enabled aarch64; then
4938
4939     case $cpu in
4940         armv*)
4941             cpuflags="-march=$cpu"
4942         ;;
4943         *)
4944             cpuflags="-mcpu=$cpu"
4945         ;;
4946     esac
4947
4948 elif enabled alpha; then
4949
4950     cpuflags="-mcpu=$cpu"
4951
4952 elif enabled arm; then
4953
4954     check_arm_arch() {
4955         test_cpp_condition stddef.h \
4956             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4957             $cpuflags
4958     }
4959
4960     probe_arm_arch() {
4961         if   check_arm_arch 4;        then echo armv4
4962         elif check_arm_arch 4T;       then echo armv4t
4963         elif check_arm_arch 5;        then echo armv5
4964         elif check_arm_arch 5E;       then echo armv5e
4965         elif check_arm_arch 5T;       then echo armv5t
4966         elif check_arm_arch 5TE;      then echo armv5te
4967         elif check_arm_arch 5TEJ;     then echo armv5te
4968         elif check_arm_arch 6;        then echo armv6
4969         elif check_arm_arch 6J;       then echo armv6j
4970         elif check_arm_arch 6K;       then echo armv6k
4971         elif check_arm_arch 6Z;       then echo armv6z
4972         elif check_arm_arch 6KZ;      then echo armv6zk
4973         elif check_arm_arch 6ZK;      then echo armv6zk
4974         elif check_arm_arch 6T2;      then echo armv6t2
4975         elif check_arm_arch 7;        then echo armv7
4976         elif check_arm_arch 7A  7_A;  then echo armv7-a
4977         elif check_arm_arch 7S;       then echo armv7-a
4978         elif check_arm_arch 7R  7_R;  then echo armv7-r
4979         elif check_arm_arch 7M  7_M;  then echo armv7-m
4980         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4981         elif check_arm_arch 8A  8_A;  then echo armv8-a
4982         fi
4983     }
4984
4985     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4986
4987     case $cpu in
4988         armv*)
4989             cpuflags="-march=$cpu"
4990             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4991         ;;
4992         *)
4993             cpuflags="-mcpu=$cpu"
4994             case $cpu in
4995                 cortex-a*)                               subarch=armv7a  ;;
4996                 cortex-r*)                               subarch=armv7r  ;;
4997                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4998                 arm11*)                                  subarch=armv6   ;;
4999                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
5000                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
5001                 *)                             subarch=$(probe_arm_arch) ;;
5002             esac
5003         ;;
5004     esac
5005
5006     case "$subarch" in
5007         armv5t*)    enable fast_clz                ;;
5008         armv[6-8]*)
5009             enable fast_clz
5010             disabled fast_unaligned || enable fast_unaligned
5011             ;;
5012     esac
5013
5014 elif enabled avr32; then
5015
5016     case $cpu in
5017         ap7[02]0[0-2])
5018             subarch="avr32_ap"
5019             cpuflags="-mpart=$cpu"
5020         ;;
5021         ap)
5022             subarch="avr32_ap"
5023             cpuflags="-march=$cpu"
5024         ;;
5025         uc3[ab]*)
5026             subarch="avr32_uc"
5027             cpuflags="-mcpu=$cpu"
5028         ;;
5029         uc)
5030             subarch="avr32_uc"
5031             cpuflags="-march=$cpu"
5032         ;;
5033     esac
5034
5035 elif enabled bfin; then
5036
5037     cpuflags="-mcpu=$cpu"
5038
5039 elif enabled mips; then
5040
5041     if [ "$cpu" != "generic" ]; then
5042         disable mips32r2
5043         disable mips32r5
5044         disable mips64r2
5045         disable mips32r6
5046         disable mips64r6
5047         disable loongson2
5048         disable loongson3
5049         disable mipsdsp
5050         disable mipsdspr2
5051
5052         cpuflags="-march=$cpu"
5053
5054         case $cpu in
5055             # General ISA levels
5056             mips1|mips3)
5057             ;;
5058             mips32r2)
5059                 enable mips32r2
5060             ;;
5061             mips32r5)
5062                 enable mips32r2
5063                 enable mips32r5
5064             ;;
5065             mips64r2|mips64r5)
5066                 enable mips64r2
5067                 enable loongson3
5068             ;;
5069             # Cores from MIPS(MTI)
5070             24kc)
5071                 disable mipsfpu
5072                 enable mips32r2
5073             ;;
5074             24kf*|24kec|34kc|74Kc|1004kc)
5075                 enable mips32r2
5076             ;;
5077             24kef*|34kf*|1004kf*)
5078                 enable mipsdsp
5079                 enable mips32r2
5080             ;;
5081             p5600)
5082                 enable mips32r2
5083                 enable mips32r5
5084                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
5085             ;;
5086             i6400)
5087                 enable mips64r6
5088                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
5089             ;;
5090             p6600)
5091                 enable mips64r6
5092                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
5093             ;;
5094             # Cores from Loongson
5095             loongson2e|loongson2f|loongson3*)
5096                 enable local_aligned
5097                 enable simd_align_16
5098                 enable fast_64bit
5099                 enable fast_clz
5100                 enable fast_cmov
5101                 enable fast_unaligned
5102                 disable aligned_stack
5103                 # When gcc version less than 5.3.0, add -fno-expensive-optimizations flag.
5104                 if test "$cc_type" = "gcc"; then
5105                     case $gcc_basever in
5106                         2|2.*|3.*|4.*|5.0|5.1|5.2)
5107                         expensive_optimization_flag="-fno-expensive-optimizations"
5108                         ;;
5109                         *)
5110                         expensive_optimization_flag=""
5111                         ;;
5112                     esac
5113                 fi
5114
5115                 case $cpu in
5116                     loongson3*)
5117                         enable loongson3
5118                         cpuflags="-march=loongson3a -mhard-float $expensive_optimization_flag"
5119                     ;;
5120                     loongson2e)
5121                         enable loongson2
5122                         cpuflags="-march=loongson2e -mhard-float $expensive_optimization_flag"
5123                     ;;
5124                     loongson2f)
5125                         enable loongson2
5126                         cpuflags="-march=loongson2f -mhard-float $expensive_optimization_flag"
5127                     ;;
5128                 esac
5129             ;;
5130             *)
5131                 warn "unknown MIPS CPU"
5132             ;;
5133         esac
5134
5135     else
5136         disable mipsdsp
5137         disable mipsdspr2
5138         # Disable DSP stuff for generic CPU, it can't be detected at runtime.
5139         warn 'generic cpu selected'
5140     fi
5141
5142 elif enabled ppc; then
5143
5144     disable ldbrx
5145
5146     case $(tolower $cpu) in
5147         601|ppc601|powerpc601)
5148             cpuflags="-mcpu=601"
5149             disable altivec
5150         ;;
5151         603*|ppc603*|powerpc603*)
5152             cpuflags="-mcpu=603"
5153             disable altivec
5154         ;;
5155         604*|ppc604*|powerpc604*)
5156             cpuflags="-mcpu=604"
5157             disable altivec
5158         ;;
5159         g3|75*|ppc75*|powerpc75*)
5160             cpuflags="-mcpu=750"
5161             disable altivec
5162         ;;
5163         g4|745*|ppc745*|powerpc745*)
5164             cpuflags="-mcpu=7450"
5165             disable vsx
5166         ;;
5167         74*|ppc74*|powerpc74*)
5168             cpuflags="-mcpu=7400"
5169             disable vsx
5170         ;;
5171         g5|970|ppc970|powerpc970)
5172             cpuflags="-mcpu=970"
5173             disable vsx
5174         ;;
5175         power[3-6]*)
5176             cpuflags="-mcpu=$cpu"
5177             disable vsx
5178         ;;
5179         power[7-8]*)
5180             cpuflags="-mcpu=$cpu"
5181         ;;
5182         cell)
5183             cpuflags="-mcpu=cell"
5184             enable ldbrx
5185             disable vsx
5186         ;;
5187         e500mc)
5188             cpuflags="-mcpu=e500mc"
5189             disable altivec
5190         ;;
5191         e500v2)
5192             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
5193             disable altivec
5194             disable dcbzl
5195         ;;
5196         e500)
5197             cpuflags="-mcpu=8540 -mhard-float"
5198             disable altivec
5199             disable dcbzl
5200         ;;
5201     esac
5202
5203 elif enabled sparc; then
5204
5205     case $cpu in
5206         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
5207             cpuflags="-mcpu=$cpu"
5208         ;;
5209         ultrasparc*|niagara[234])
5210             cpuflags="-mcpu=$cpu"
5211         ;;
5212     esac
5213
5214 elif enabled x86; then
5215
5216     case $cpu in
5217         i[345]86|pentium)
5218             cpuflags="-march=$cpu"
5219             disable i686
5220             disable mmx
5221         ;;
5222         # targets that do NOT support nopl and conditional mov (cmov)
5223         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
5224             cpuflags="-march=$cpu"
5225             disable i686
5226         ;;
5227         # targets that do support nopl and conditional mov (cmov)
5228         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
5229         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
5230         |amdfam10|barcelona|b[dt]ver*|znver*)
5231             cpuflags="-march=$cpu"
5232             enable i686
5233             enable fast_cmov
5234         ;;
5235         # targets that do support conditional mov but on which it's slow
5236         pentium4|pentium4m|prescott|nocona)
5237             cpuflags="-march=$cpu"
5238             enable i686
5239             disable fast_cmov
5240         ;;
5241     esac
5242
5243 fi
5244
5245 if [ "$cpu" != generic ]; then
5246     add_cflags  $cpuflags
5247     add_asflags $cpuflags
5248     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
5249 fi
5250
5251 # compiler sanity check
5252 test_exec <<EOF
5253 int main(void){ return 0; }
5254 EOF
5255 if test "$?" != 0; then
5256     echo "$cc is unable to create an executable file."
5257     if test -z "$cross_prefix" && ! enabled cross_compile ; then
5258         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
5259         echo "Only do this if you know what cross compiling means."
5260     fi
5261     die "C compiler test failed."
5262 fi
5263
5264 add_cppflags -D_ISOC99_SOURCE
5265 add_cxxflags -D__STDC_CONSTANT_MACROS
5266 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
5267
5268 # some compilers silently accept -std=c11, so we also need to check that the
5269 # version macro is defined properly
5270 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
5271     add_cflags -std=c11 ||
5272     check_cflags -std=c99
5273
5274 check_cppflags -D_FILE_OFFSET_BITS=64
5275 check_cppflags -D_LARGEFILE_SOURCE
5276
5277 add_host_cppflags -D_ISOC99_SOURCE
5278 check_host_cflags -std=c99
5279 check_host_cflags -Wall
5280 check_host_cflags $host_cflags_speed
5281
5282 check_64bit(){
5283     arch32=$1
5284     arch64=$2
5285     expr=${3:-'sizeof(void *) > 4'}
5286     test_code cc "" "int test[2*($expr) - 1]" &&
5287         subarch=$arch64 || subarch=$arch32
5288     enable $subarch
5289 }
5290
5291 case "$arch" in
5292     aarch64|alpha|ia64)
5293         enabled shared && enable_weak pic
5294     ;;
5295     mips)
5296         check_64bit mips mips64 '_MIPS_SIM > 1'
5297         enabled shared && enable_weak pic
5298     ;;
5299     parisc)
5300         check_64bit parisc parisc64
5301         enabled shared && enable_weak pic
5302     ;;
5303     ppc)
5304         check_64bit ppc ppc64
5305         enabled shared && enable_weak pic
5306     ;;
5307     s390)
5308         check_64bit s390 s390x
5309         enabled shared && enable_weak pic
5310     ;;
5311     sparc)
5312         check_64bit sparc sparc64
5313         enabled shared && enable_weak pic
5314     ;;
5315     x86)
5316         check_64bit x86_32 x86_64
5317         # Treat x32 as x64 for now. Note it also needs pic if shared
5318         test "$subarch" = "x86_32" && test_cpp_condition stddef.h 'defined(__x86_64__)' &&
5319             subarch=x86_64 && enable x86_64 && disable x86_32
5320         if enabled x86_64; then
5321             enabled shared && enable_weak pic
5322             objformat=elf64
5323         fi
5324     ;;
5325 esac
5326
5327 # OS specific
5328 case $target_os in
5329     aix)
5330         SHFLAGS=-shared
5331         add_cppflags '-I\$(SRC_PATH)/compat/aix'
5332         enabled shared && add_ldflags -Wl,-brtl
5333         arflags='-Xany -r -c'
5334         striptype=""
5335         ;;
5336     android)
5337         disable symver
5338         enable section_data_rel_ro
5339         add_cflags -fPIE
5340         add_ldexeflags -fPIE -pie
5341         SLIB_INSTALL_NAME='$(SLIBNAME)'
5342         SLIB_INSTALL_LINKS=
5343         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
5344         ;;
5345     haiku)
5346         prefix_default="/boot/common"
5347         network_extralibs="-lnetwork"
5348         host_extralibs=
5349         ;;
5350     sunos)
5351         SHFLAGS='-shared -Wl,-h,$$(@F)'
5352         enabled x86 && append SHFLAGS -mimpure-text
5353         network_extralibs="-lsocket -lnsl"
5354         add_cppflags -D__EXTENSIONS__
5355         # When using suncc to build, the Solaris linker will mark
5356         # an executable with each instruction set encountered by
5357         # the Solaris assembler.  As our libraries contain their own
5358         # guards for processor-specific code, instead suppress
5359         # generation of the HWCAPS ELF section on Solaris x86 only.
5360         enabled_all suncc x86 &&
5361             echo "hwcap_1 = OVERRIDE;" > mapfile &&
5362             add_ldflags -Wl,-M,mapfile
5363         nm_default='nm -P -g'
5364         striptype=""
5365         version_script='-M'
5366         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
5367         ;;
5368     netbsd)
5369         disable symver
5370         oss_indev_extralibs="-lossaudio"
5371         oss_outdev_extralibs="-lossaudio"
5372         enabled gcc || check_ldflags -Wl,-zmuldefs
5373         ;;
5374     openbsd|bitrig)
5375         disable symver
5376         enable section_data_rel_ro
5377         striptype=""
5378         SHFLAGS='-shared'
5379         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
5380         SLIB_INSTALL_LINKS=
5381         oss_indev_extralibs="-lossaudio"
5382         oss_outdev_extralibs="-lossaudio"
5383         ;;
5384     dragonfly)
5385         disable symver
5386         ;;
5387     freebsd)
5388         ;;
5389     bsd/os)
5390         add_extralibs -lpoll -lgnugetopt
5391         strip="strip -d"
5392         ;;
5393     darwin)
5394         enabled ppc && add_asflags -force_cpusubtype_ALL
5395         install_name_dir_default='$(SHLIBDIR)'
5396         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
5397         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
5398         strip="${strip} -x"
5399         add_ldflags -Wl,-dynamic,-search_paths_first
5400         check_cflags -Werror=partial-availability
5401         SLIBSUF=".dylib"
5402         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
5403         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
5404         enabled x86_64 && objformat="macho64" || objformat="macho32"
5405         enabled_any pic shared x86_64 ||
5406             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
5407         check_headers dispatch/dispatch.h &&
5408             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
5409         if test -n "$sysroot"; then
5410             is_in -isysroot $cc $CPPFLAGS $CFLAGS || check_cppflags -isysroot $sysroot
5411             is_in -isysroot $ld $LDFLAGS          || check_ldflags  -isysroot $sysroot
5412         fi
5413         version_script='-exported_symbols_list'
5414         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
5415         # Workaround for Xcode 11 -fstack-check bug
5416         if enabled clang; then
5417             clang_version=$($cc -dumpversion)
5418             test ${clang_version%%.*} -eq 11 && add_cflags -fno-stack-check
5419         fi
5420         ;;
5421     msys*)
5422         die "Native MSYS builds are discouraged, please use the MINGW environment."
5423         ;;
5424     mingw32*|mingw64*)
5425         target_os=mingw32
5426         LIBTARGET=i386
5427         if enabled x86_64; then
5428             LIBTARGET="i386:x86-64"
5429         elif enabled arm; then
5430             LIBTARGET="arm"
5431         elif enabled aarch64; then
5432             LIBTARGET="arm64"
5433         fi
5434         if enabled shared; then
5435             # Cannot build both shared and static libs when using dllimport.
5436             disable static
5437         fi
5438         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5439         enabled x86_32 && check_ldflags -Wl,--large-address-aware
5440         shlibdir_default="$bindir_default"
5441         SLIBPREF=""
5442         SLIBSUF=".dll"
5443         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5444         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5445         if test_cmd lib.exe -list; then
5446             SLIB_EXTRA_CMD=-'lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5447             if enabled x86_64; then
5448                 LIBTARGET=x64
5449             fi
5450         else
5451             SLIB_EXTRA_CMD=-'$(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
5452         fi
5453         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5454         SLIB_INSTALL_LINKS=
5455         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5456         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5457         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" AR="$(AR_CMD)" NM="$(NM_CMD)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5458         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--disable-auto-image-base $$(@:$(SLIBSUF)=.def)'
5459         enabled x86_64 && objformat="win64" || objformat="win32"
5460         dlltool="${cross_prefix}dlltool"
5461         ranlib=:
5462         enable dos_paths
5463         check_ldflags -Wl,--nxcompat,--dynamicbase
5464         # Lets work around some stupidity in binutils.
5465         # ld will strip relocations from executables even though we need them
5466         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
5467         # however ld then forgets what the entry point should be (oops) so we
5468         # have to manually (re)set it.
5469         if enabled x86_32; then
5470             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
5471         elif enabled x86_64; then
5472             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
5473             check_ldflags -Wl,--high-entropy-va # binutils 2.25
5474             # Set image base >4GB for extra entropy with HEASLR
5475             add_ldexeflags -Wl,--image-base,0x140000000
5476             append SHFLAGS -Wl,--image-base,0x180000000
5477         fi
5478         ;;
5479     win32|win64)
5480         disable symver
5481         if enabled shared; then
5482             # Link to the import library instead of the normal static library
5483             # for shared libs.
5484             LD_LIB='%.lib'
5485             # Cannot build both shared and static libs with MSVC or icl.
5486             disable static
5487         fi
5488         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
5489         shlibdir_default="$bindir_default"
5490         SLIBPREF=""
5491         SLIBSUF=".dll"
5492         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5493         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5494         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5495         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5496         SLIB_INSTALL_LINKS=
5497         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5498         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5499         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5500         enabled x86_64 && objformat="win64" || objformat="win32"
5501         ranlib=:
5502         enable dos_paths
5503         ;;
5504     cygwin*)
5505         target_os=cygwin
5506         shlibdir_default="$bindir_default"
5507         SLIBPREF="cyg"
5508         SLIBSUF=".dll"
5509         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5510         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5511         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5512         SLIB_INSTALL_LINKS=
5513         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
5514         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
5515         enabled x86_64 && objformat="win64" || objformat="win32"
5516         enable dos_paths
5517         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5518         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5519         ;;
5520     *-dos|freedos|opendos)
5521         network_extralibs="-lsocket"
5522         objformat="coff"
5523         enable dos_paths
5524         ;;
5525     linux)
5526         enable section_data_rel_ro
5527         enabled_any arm aarch64 && enable_weak linux_perf
5528         ;;
5529     irix*)
5530         target_os=irix
5531         ranlib="echo ignoring ranlib"
5532         ;;
5533     os/2*)
5534         strip="lxlite -CS"
5535         striptype=""
5536         objformat="aout"
5537         add_cppflags -D_GNU_SOURCE
5538         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
5539         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
5540         LIBSUF="_s.a"
5541         SLIBPREF=""
5542         SLIBSUF=".dll"
5543         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5544         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
5545         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
5546             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
5547             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
5548             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
5549             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
5550         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
5551             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
5552         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5553         SLIB_INSTALL_LINKS=
5554         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
5555         enable dos_paths
5556         enable_weak os2threads
5557         ;;
5558     gnu/kfreebsd)
5559         add_cppflags -D_BSD_SOURCE
5560         ;;
5561     gnu)
5562         ;;
5563     qnx)
5564         add_cppflags -D_QNX_SOURCE
5565         network_extralibs="-lsocket"
5566         ;;
5567     symbian)
5568         SLIBSUF=".dll"
5569         enable dos_paths
5570         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
5571         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
5572         add_ldflags -Wl,--target1-abs,--no-undefined \
5573                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
5574                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
5575         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
5576                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
5577                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
5578         ;;
5579     minix)
5580         ;;
5581     none)
5582         ;;
5583     *)
5584         die "Unknown OS '$target_os'."
5585         ;;
5586 esac
5587
5588 # test if creating links works
5589 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5590 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5591 mkdir "$link_dest"
5592 $ln_s "$link_dest" "$link_name"
5593 touch "$link_dest/test_file"
5594 if [ "$source_path" != "." ] && [ "$source_path" != "src" ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5595     # create link to source path
5596     [ -e src ] && rm src
5597     $ln_s "$source_path" src
5598     source_link=src
5599 else
5600     # creating directory links doesn't work
5601     # fall back to using the full source path
5602     source_link="$source_path"
5603 fi
5604 # cleanup
5605 rm -r "$link_dest"
5606 rm -r "$link_name"
5607
5608 # determine libc flavour
5609
5610 probe_libc(){
5611     pfx=$1
5612     pfx_no_=${pfx%_}
5613     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5614     if test_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5615         eval ${pfx}libc_type=uclibc
5616         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5617     elif test_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5618         eval ${pfx}libc_type=glibc
5619         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5620     # MinGW headers can be installed on Cygwin, so check for newlib first.
5621     elif test_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5622         eval ${pfx}libc_type=newlib
5623         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
5624     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5625     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5626         eval ${pfx}libc_type=mingw64
5627         if test_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5628             add_compat msvcrt/snprintf.o
5629             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5630         fi
5631         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5632         eval test \$${pfx_no_}cc_type = "gcc" &&
5633             add_${pfx}cppflags -D__printf__=__gnu_printf__
5634         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5635             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5636         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5637     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5638          test_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5639         eval ${pfx}libc_type=mingw32
5640         test_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5641             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5642             die "ERROR: MinGW32 runtime version must be >= 3.15."
5643         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5644         test_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
5645             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5646         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5647             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5648         eval test \$${pfx_no_}cc_type = "gcc" &&
5649             add_${pfx}cppflags -D__printf__=__gnu_printf__
5650         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5651     elif test_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5652         eval ${pfx}libc_type=msvcrt
5653         if test_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5654             if [ "$pfx" = host_ ]; then
5655                 add_host_cppflags -Dsnprintf=_snprintf
5656             else
5657                 add_compat strtod.o strtod=avpriv_strtod
5658                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5659                                              _snprintf=avpriv_snprintf  \
5660                                              vsnprintf=avpriv_vsnprintf
5661             fi
5662         fi
5663         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5664         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5665         # 0x601 by default unless something else is set by the user.
5666         # This can easily lead to us detecting functions only present
5667         # in such new versions and producing binaries requiring windows 7.0.
5668         # Therefore explicitly set the default to Vista unless the user has
5669         # set something else on the command line.
5670         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5671         # family. For these cases, configure is free to use any functions
5672         # found in the SDK headers by default. (Alternatively, we could force
5673         # _WIN32_WINNT to 0x0602 in that case.)
5674         test_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5675             { test_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0600; }
5676 #ifdef WINAPI_FAMILY
5677 #include <winapifamily.h>
5678 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5679 #error not desktop
5680 #endif
5681 #endif
5682 EOF
5683         if [ "$pfx" = "" ]; then
5684             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5685             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5686         fi
5687     elif test_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5688         eval ${pfx}libc_type=klibc
5689     elif test_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5690         eval ${pfx}libc_type=bionic
5691     elif test_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5692         eval ${pfx}libc_type=solaris
5693         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5694     elif test_${pfx}cpp_condition sys/version.h "defined __DJGPP__"; then
5695         eval ${pfx}libc_type=djgpp
5696         add_cppflags -U__STRICT_ANSI__
5697         add_cflags "-include $source_path/compat/djgpp/math.h"
5698         add_compat djgpp/math.o
5699     fi
5700     test_${pfx}cc <<EOF
5701 #include <time.h>
5702 void *v = localtime_r;
5703 EOF
5704 test "$?" != 0 && test_${pfx}cc -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 <<EOF && add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5705 #include <time.h>
5706 void *v = localtime_r;
5707 EOF
5708
5709     eval test -n "\${${pfx}libc_type}" && enable ${pfx}libc_${libc_type}
5710 }
5711
5712 probe_libc
5713 probe_libc host_
5714
5715 # hacks for compiler/libc/os combinations
5716
5717 case $libc_type in
5718     bionic)
5719         add_compat strtod.o strtod=avpriv_strtod
5720         ;;
5721 esac
5722
5723 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5724     add_cppflags '-I\$(SRC_PATH)/compat/float'
5725
5726 test_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5727
5728 set_default libdir
5729 : ${shlibdir_default:="$libdir"}
5730 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5731
5732 set_default $PATHS_LIST
5733 set_default nm
5734
5735 disabled optimizations || enabled ossfuzz || check_cflags -fomit-frame-pointer
5736
5737 enable_weak_pic() {
5738     disabled pic && return
5739     enable pic
5740     add_cppflags -DPIC
5741     case "$target_os" in
5742     mingw*|cygwin*|win*)
5743         ;;
5744     *)
5745         add_cflags -fPIC
5746         add_asflags -fPIC
5747         ;;
5748     esac
5749 }
5750
5751 enabled pic && enable_weak_pic
5752
5753 test_cc <<EOF || die "Symbol mangling check failed."
5754 int ff_extern;
5755 EOF
5756 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5757 extern_prefix=${sym%%ff_extern*}
5758
5759 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
5760
5761 for restrict_keyword in restrict __restrict__ __restrict ""; do
5762     test_code cc "" "char * $restrict_keyword p" && break
5763 done
5764
5765 check_cc pragma_deprecated "" '_Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"")'
5766
5767 # The global variable ensures the bits appear unchanged in the object file.
5768 test_cc <<EOF || die "endian test failed"
5769 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5770 EOF
5771 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5772
5773 check_cc const_nan math.h "struct { double d; } static const bar[] = { { NAN } }"
5774
5775 if ! enabled ppc64 || enabled bigendian; then
5776     disable vsx
5777 fi
5778
5779 check_gas() {
5780     log "check_gas using '$as' as AS"
5781     # :vararg is used on aarch64, arm and ppc altivec
5782     check_as vararg "
5783 .macro m n, y:vararg=0
5784 \n: .int \y
5785 .endm
5786 m x" || return 1
5787     # .altmacro is only used in arm asm
5788     ! enabled arm || check_as gnu_as ".altmacro"
5789 }
5790
5791 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5792     nogas=:
5793     enabled_any arm aarch64 && nogas=die
5794     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5795     as_noop=-v
5796
5797     case $as_type in
5798         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5799         gcc)  gaspp_as_type=gas ;;
5800         *)    gaspp_as_type=$as_type ;;
5801     esac
5802
5803     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5804
5805     test "${as#*gas-preprocessor.pl}" != "$as" ||
5806     test_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5807         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5808
5809     if ! check_gas ; then
5810         as=${gas:=$as}
5811         check_gas || \
5812             $nogas "GNU assembler not found, install/update gas-preprocessor"
5813     fi
5814
5815     check_as as_func ".func test
5816                       .endfunc"
5817 fi
5818
5819 check_inline_asm inline_asm_labels '"1:\n"'
5820
5821 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5822
5823 if enabled aarch64; then
5824     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5825     # internal assembler in clang 3.3 does not support this instruction
5826     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5827     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5828
5829     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5830
5831 elif enabled alpha; then
5832
5833     check_cflags -mieee
5834
5835 elif enabled arm; then
5836
5837     enabled msvc && check_cpp_condition thumb stddef.h "defined _M_ARMT"
5838     test_cpp_condition stddef.h "defined __thumb__" && test_cc <<EOF && enable_weak thumb
5839 float func(float a, float b){ return a+b; }
5840 EOF
5841     enabled thumb && check_cflags -mthumb || check_cflags -marm
5842
5843     if check_cpp_condition vfp_args stddef.h "defined __ARM_PCS_VFP"; then
5844         :
5845     elif check_cpp_condition vfp_args stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5846         :
5847     elif ! test_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5848         case "${cross_prefix:-$cc}" in
5849             *hardfloat*) enable vfp_args; fpabi=vfp ;;
5850             *) check_ld "cc" vfp_args <<EOF && fpabi=vfp || fpabi=soft ;;
5851 __asm__ (".eabi_attribute 28, 1");
5852 int main(void) { return 0; }
5853 EOF
5854         esac
5855         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5856     fi
5857
5858     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5859     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5860     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5861     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5862     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5863     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5864     enabled setend  && check_insn setend  'setend be'
5865
5866     [ $target_os = linux ] || [ $target_os = android ] ||
5867         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5868             $ARCH_EXT_LIST_ARM
5869
5870     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5871
5872     check_as as_arch_directive ".arch armv7-a"
5873     check_as as_dn_directive   "ra .dn d0.i16"
5874     check_as as_fpu_directive  ".fpu neon"
5875
5876     # llvm's integrated assembler supports .object_arch from llvm 3.5
5877     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
5878         check_as as_object_arch ".object_arch armv4"
5879
5880     # MS armasm fails to assemble our PIC constructs
5881     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5882
5883 elif enabled mips; then
5884
5885     # Check toolchain ISA level
5886     if enabled mips64; then
5887         enabled mips64r6 && check_inline_asm mips64r6 '"dlsa $0, $0, $0, 1"' &&
5888             disable mips64r2
5889
5890         enabled mips64r2 && check_inline_asm mips64r2 '"dext $0, $0, 0, 1"'
5891
5892         disable mips32r6 && disable mips32r5 && disable mips32r2
5893     else
5894         enabled mips32r6 && check_inline_asm mips32r6 '"aui $0, $0, 0"' &&
5895             disable mips32r5 && disable mips32r2
5896
5897         enabled mips32r5 && check_inline_asm mips32r5 '"eretnc"'
5898         enabled mips32r2 && check_inline_asm mips32r2 '"ext $0, $0, 0, 1"'
5899
5900         disable mips64r6 && disable mips64r5 && disable mips64r2
5901     fi
5902
5903     enabled mipsfpu && check_inline_asm mipsfpu '"cvt.d.l $f0, $f2"'
5904     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5905
5906     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5907     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5908
5909     # MSA and MSA2 can be detected at runtime so we supply extra flags here
5910     enabled mipsfpu && enabled msa && check_inline_asm msa '"addvi.b $w0, $w1, 1"' '-mmsa' && append MSAFLAGS '-mmsa'
5911     enabled msa && enabled msa2 && check_inline_asm msa2 '"nxbits.any.b $w0, $w0"' '-mmsa2' && append MSAFLAGS '-mmsa2'
5912
5913     # loongson2 have no switch cflag so we can only probe toolchain ability
5914     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"' && disable loongson3
5915
5916     # loongson3 is paired with MMI
5917     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"' '-mloongson-ext' && append MMIFLAGS '-mloongson-ext'
5918
5919     # MMI can be detected at runtime too
5920     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"' '-mloongson-mmi' && append MMIFLAGS '-mloongson-mmi'
5921
5922     if enabled bigendian && enabled msa; then
5923         disable msa
5924     fi
5925
5926 elif enabled parisc; then
5927
5928     if enabled gcc; then
5929         case $($cc -dumpversion) in
5930             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5931         esac
5932     fi
5933
5934 elif enabled ppc; then
5935
5936     enable local_aligned
5937
5938     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5939     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5940     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5941     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5942
5943     if enabled altivec; then
5944         check_cflags -maltivec -mabi=altivec
5945
5946         # check if our compiler supports Motorola AltiVec C API
5947         check_cc altivec altivec.h "vector signed int v1 = (vector signed int) { 0 };
5948                                     vector signed int v2 = (vector signed int) { 1 };
5949                                     v1 = vec_add(v1, v2);"
5950
5951         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5952     fi
5953
5954     if enabled vsx; then
5955         check_cflags -mvsx &&
5956         check_cc vsx altivec.h "int v[4] = { 0 };
5957                                 vector signed int v1 = vec_vsx_ld(0, v);"
5958     fi
5959
5960     if enabled power8; then
5961         check_cpp_condition power8 "altivec.h" "defined(_ARCH_PWR8)"
5962     fi
5963
5964 elif enabled x86; then
5965
5966     check_builtin rdtsc    intrin.h   "__rdtsc()"
5967     check_builtin mm_empty mmintrin.h "_mm_empty()"
5968
5969     enable local_aligned
5970
5971     # check whether EBP is available on x86
5972     # As 'i' is stored on the stack, this program will crash
5973     # if the base pointer is used to access it because the
5974     # base pointer is cleared in the inline assembly code.
5975     check_exec_crash <<EOF && enable ebp_available
5976 volatile int i=0;
5977 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5978 return i;
5979 EOF
5980
5981     # check whether EBX is available on x86
5982     check_inline_asm ebx_available '""::"b"(0)' &&
5983         check_inline_asm ebx_available '"":::"%ebx"'
5984
5985     # check whether xmm clobbers are supported
5986     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5987
5988     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5989         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5990
5991     # check whether binutils is new enough to compile SSSE3/MMXEXT
5992     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5993     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5994
5995     probe_x86asm(){
5996         x86asmexe_probe=$1
5997         if test_cmd $x86asmexe_probe -v; then
5998             x86asmexe=$x86asmexe_probe
5999             x86asm_type=nasm
6000             x86asm_debug="-g -F dwarf"
6001             X86ASMDEP=
6002             X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
6003         elif test_cmd $x86asmexe_probe --version; then
6004             x86asmexe=$x86asmexe_probe
6005             x86asm_type=yasm
6006             x86asm_debug="-g dwarf2"
6007             X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
6008             X86ASM_DEPFLAGS=
6009         fi
6010         check_x86asm x86asm "movbe ecx, [5]"
6011     }
6012
6013     if ! disabled_any asm mmx x86asm; then
6014         disable x86asm
6015         for program in $x86asmexe nasm yasm; do
6016             probe_x86asm $program && break
6017         done
6018         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
6019         X86ASMFLAGS="-f $objformat"
6020         enabled pic               && append X86ASMFLAGS "-DPIC"
6021         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
6022         case "$objformat" in
6023             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
6024         esac
6025
6026         enabled avx512 && check_x86asm avx512_external "vmovdqa32 [eax]{k1}{z}, zmm0"
6027         enabled avx2   && check_x86asm avx2_external   "vextracti128 xmm0, ymm0, 0"
6028         enabled xop    && check_x86asm xop_external    "vpmacsdd xmm0, xmm1, xmm2, xmm3"
6029         enabled fma4   && check_x86asm fma4_external   "vfmaddps ymm0, ymm1, ymm2, ymm3"
6030         check_x86asm cpunop          "CPU amdnop"
6031     fi
6032
6033     case "$cpu" in
6034         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
6035             disable fast_clz
6036         ;;
6037     esac
6038
6039 fi
6040
6041 check_cc intrinsics_neon arm_neon.h "int16x8_t test = vdupq_n_s16(0)"
6042
6043 check_ldflags -Wl,--as-needed
6044 check_ldflags -Wl,-z,noexecstack
6045
6046 if ! disabled network; then
6047     check_func getaddrinfo $network_extralibs
6048     check_func inet_aton $network_extralibs
6049
6050     check_type netdb.h "struct addrinfo"
6051     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
6052     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
6053     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
6054     check_type poll.h "struct pollfd"
6055     check_type netinet/sctp.h "struct sctp_event_subscribe"
6056     check_struct "sys/socket.h" "struct msghdr" msg_flags
6057     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
6058     check_type netinet/in.h "struct sockaddr_in6"
6059     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
6060     check_type "sys/types.h sys/socket.h" socklen_t
6061
6062     # Prefer arpa/inet.h over winsock2
6063     if check_headers arpa/inet.h ; then
6064         check_func closesocket
6065     elif check_headers winsock2.h ; then
6066         check_func_headers winsock2.h closesocket -lws2 &&
6067             network_extralibs="-lws2" ||
6068         { check_func_headers winsock2.h closesocket -lws2_32 &&
6069             network_extralibs="-lws2_32"; } || disable winsock2_h network
6070         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
6071
6072         check_type ws2tcpip.h socklen_t
6073         check_type ws2tcpip.h "struct addrinfo"
6074         check_type ws2tcpip.h "struct group_source_req"
6075         check_type ws2tcpip.h "struct ip_mreq_source"
6076         check_type ws2tcpip.h "struct ipv6_mreq"
6077         check_type winsock2.h "struct pollfd"
6078         check_struct winsock2.h "struct sockaddr" sa_len
6079         check_type ws2tcpip.h "struct sockaddr_in6"
6080         check_type ws2tcpip.h "struct sockaddr_storage"
6081     else
6082         disable network
6083     fi
6084 fi
6085
6086 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
6087 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
6088 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
6089 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
6090 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
6091 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
6092 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
6093
6094 case "$custom_allocator" in
6095     jemalloc)
6096         # jemalloc by default does not use a prefix
6097         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
6098     ;;
6099     tcmalloc)
6100         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
6101         malloc_prefix=tc_
6102     ;;
6103 esac
6104
6105 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
6106 check_func  ${malloc_prefix}memalign            && enable memalign
6107 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
6108
6109 check_func  access
6110 check_func_headers stdlib.h arc4random
6111 check_lib   clock_gettime time.h clock_gettime || check_lib clock_gettime time.h clock_gettime -lrt
6112 check_func  fcntl
6113 check_func  fork
6114 check_func  gethrtime
6115 check_func  getopt
6116 check_func  getrusage
6117 check_func  gettimeofday
6118 check_func  isatty
6119 check_func  mkstemp
6120 check_func  mmap
6121 check_func  mprotect
6122 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
6123 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
6124 check_func  sched_getaffinity
6125 check_func  setrlimit
6126 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
6127 check_func  strerror_r
6128 check_func  sysconf
6129 check_func  sysctl
6130 check_func  usleep
6131
6132 check_func_headers conio.h kbhit
6133 check_func_headers io.h setmode
6134 check_func_headers lzo/lzo1x.h lzo1x_999_compress
6135 check_func_headers mach/mach_time.h mach_absolute_time
6136 check_func_headers stdlib.h getenv
6137 check_func_headers sys/stat.h lstat
6138
6139 check_func_headers windows.h GetModuleHandle
6140 check_func_headers windows.h GetProcessAffinityMask
6141 check_func_headers windows.h GetProcessTimes
6142 check_func_headers windows.h GetStdHandle
6143 check_func_headers windows.h GetSystemTimeAsFileTime
6144 check_func_headers windows.h LoadLibrary
6145 check_func_headers windows.h MapViewOfFile
6146 check_func_headers windows.h PeekNamedPipe
6147 check_func_headers windows.h SetConsoleTextAttribute
6148 check_func_headers windows.h SetConsoleCtrlHandler
6149 check_func_headers windows.h SetDllDirectory
6150 check_func_headers windows.h Sleep
6151 check_func_headers windows.h VirtualAlloc
6152 check_func_headers glob.h glob
6153 enabled xlib &&
6154     check_lib xlib "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
6155
6156 check_headers direct.h
6157 check_headers dirent.h
6158 check_headers dxgidebug.h
6159 check_headers dxva.h
6160 check_headers dxva2api.h -D_WIN32_WINNT=0x0600
6161 check_headers io.h
6162 enabled libdrm &&
6163     check_headers linux/dma-buf.h
6164
6165 check_headers linux/perf_event.h
6166 check_headers libcrystalhd/libcrystalhd_if.h
6167 check_headers malloc.h
6168 check_headers mftransform.h
6169 check_headers net/udplite.h
6170 check_headers poll.h
6171 check_headers sys/param.h
6172 check_headers sys/resource.h
6173 check_headers sys/select.h
6174 check_headers sys/time.h
6175 check_headers sys/un.h
6176 check_headers termios.h
6177 check_headers unistd.h
6178 check_headers valgrind/valgrind.h
6179 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
6180 check_headers windows.h
6181 check_headers X11/extensions/XvMClib.h
6182 check_headers asm/types.h
6183
6184 # it seems there are versions of clang in some distros that try to use the
6185 # gcc headers, which explodes for stdatomic
6186 # so we also check that atomics actually work here
6187 check_builtin stdatomic stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0); foo += bar"
6188
6189 check_lib advapi32 "windows.h"            RegCloseKey          -ladvapi32
6190 check_lib bcrypt   "windows.h bcrypt.h"   BCryptGenRandom      -lbcrypt &&
6191     check_cpp_condition bcrypt bcrypt.h "defined BCRYPT_RNG_ALGORITHM"
6192 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
6193 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
6194 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
6195
6196 check_lib android android/native_window.h ANativeWindow_acquire -landroid
6197 check_lib mediandk "stdint.h media/NdkImage.h" AImage_delete -lmediandk
6198 check_lib camera2ndk "stdbool.h stdint.h camera/NdkCameraManager.h" ACameraManager_create -lcamera2ndk
6199
6200 enabled appkit       && check_apple_framework AppKit
6201 enabled audiotoolbox && check_apple_framework AudioToolbox
6202 enabled avfoundation && check_apple_framework AVFoundation
6203 enabled coreimage    && check_apple_framework CoreImage
6204 enabled videotoolbox && check_apple_framework VideoToolbox
6205
6206 check_apple_framework CoreFoundation
6207 check_apple_framework CoreMedia
6208 check_apple_framework CoreVideo
6209 check_apple_framework CoreAudio
6210
6211 enabled avfoundation && {
6212     disable coregraphics applicationservices
6213     check_lib coregraphics        CoreGraphics/CoreGraphics.h               CGGetActiveDisplayList "-framework CoreGraphics" ||
6214     check_lib applicationservices ApplicationServices/ApplicationServices.h CGGetActiveDisplayList "-framework ApplicationServices"; }
6215
6216 enabled videotoolbox && {
6217     check_lib coreservices CoreServices/CoreServices.h UTGetOSTypeFromString "-framework CoreServices"
6218     check_func_headers CoreMedia/CMFormatDescription.h kCMVideoCodecType_HEVC "-framework CoreMedia"
6219     check_func_headers CoreMedia/CMFormatDescription.h kCMVideoCodecType_HEVCWithAlpha "-framework CoreMedia"
6220     check_func_headers CoreVideo/CVPixelBuffer.h kCVPixelFormatType_420YpCbCr10BiPlanarVideoRange "-framework CoreVideo"
6221     check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferTransferFunction_SMPTE_ST_2084_PQ "-framework CoreVideo"
6222     check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferTransferFunction_ITU_R_2100_HLG "-framework CoreVideo"
6223     check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferTransferFunction_Linear "-framework CoreVideo"
6224 }
6225
6226 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
6227
6228 check_type "windows.h dxva.h" "DXVA_PicParams_AV1" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
6229 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
6230 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
6231 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
6232 check_type "windows.h d3d11.h" "ID3D11VideoContext"
6233 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
6234 check_func_headers mfapi.h MFCreateAlignedMemoryBuffer -lmfplat
6235
6236 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
6237 check_type "vdpau/vdpau.h" "VdpPictureInfoVP9"
6238
6239 if [ -z "$nvccflags" ]; then
6240     nvccflags=$nvccflags_default
6241 fi
6242
6243 if enabled x86_64 || enabled ppc64 || enabled aarch64; then
6244     nvccflags="$nvccflags -m64"
6245 else
6246     nvccflags="$nvccflags -m32"
6247 fi
6248
6249 if enabled cuda_nvcc; then
6250     nvccflags="$nvccflags -ptx"
6251 else
6252     nvccflags="$nvccflags -S -nocudalib -nocudainc --cuda-device-only -Wno-c++11-narrowing -include ${source_link}/compat/cuda/cuda_runtime.h"
6253     check_nvcc cuda_llvm
6254 fi
6255
6256 if ! disabled ffnvcodec; then
6257     ffnv_hdr_list="ffnvcodec/nvEncodeAPI.h ffnvcodec/dynlink_cuda.h ffnvcodec/dynlink_cuviddec.h ffnvcodec/dynlink_nvcuvid.h"
6258     check_pkg_config ffnvcodec "ffnvcodec >= 9.1.23.1" "$ffnv_hdr_list" "" || \
6259       check_pkg_config ffnvcodec "ffnvcodec >= 9.0.18.3 ffnvcodec < 9.1" "$ffnv_hdr_list" "" || \
6260       check_pkg_config ffnvcodec "ffnvcodec >= 8.2.15.10 ffnvcodec < 8.3" "$ffnv_hdr_list" "" || \
6261       check_pkg_config ffnvcodec "ffnvcodec >= 8.1.24.11 ffnvcodec < 8.2" "$ffnv_hdr_list" ""
6262 fi
6263
6264 check_cpp_condition winrt windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)"
6265
6266 if ! disabled w32threads && ! enabled pthreads; then
6267     check_func_headers "windows.h process.h" _beginthreadex &&
6268         check_type "windows.h" CONDITION_VARIABLE &&
6269         check_type "windows.h" INIT_ONCE &&
6270         enable w32threads || disable w32threads
6271     if ! enabled w32threads && enabled winrt; then
6272         check_func_headers "windows.h" CreateThread &&
6273             enable w32threads || disable w32threads
6274     fi
6275 fi
6276
6277 # check for some common methods of building with pthread support
6278 # do this before the optional library checks as some of them require pthreads
6279 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
6280     if check_lib pthreads pthread.h pthread_join   -pthread &&
6281        check_lib pthreads pthread.h pthread_create -pthread; then
6282         add_cflags -pthread
6283     elif check_lib pthreads pthread.h pthread_join   -pthreads &&
6284          check_lib pthreads pthread.h pthread_create -pthreads; then
6285         add_cflags -pthreads
6286     elif check_lib pthreads pthread.h pthread_join   -ldl -pthread &&
6287          check_lib pthreads pthread.h pthread_create -ldl -pthread; then
6288         add_cflags -ldl -pthread
6289     elif check_lib pthreads pthread.h pthread_join   -lpthreadGC2 &&
6290          check_lib pthreads pthread.h pthread_create -lpthreadGC2; then
6291         :
6292     elif check_lib pthreads pthread.h pthread_join   -lpthread &&
6293          check_lib pthreads pthread.h pthread_create -lpthread; then
6294         :
6295     elif check_func pthread_join && check_func pthread_create; then
6296         enable pthreads
6297     fi
6298     check_cc pthreads "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER"
6299
6300     if enabled pthreads; then
6301         check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
6302         check_func pthread_cancel $pthreads_extralibs
6303     fi
6304 fi
6305
6306 enabled  zlib && { check_pkg_config zlib zlib "zlib.h" zlibVersion ||
6307                    check_lib zlib   zlib.h      zlibVersion    -lz; }
6308 enabled bzlib && check_lib bzlib bzlib.h BZ2_bzlibVersion    -lbz2
6309 enabled  lzma && check_lib lzma   lzma.h lzma_version_number -llzma
6310
6311 # On some systems dynamic loading requires no extra linker flags
6312 check_lib libdl dlfcn.h "dlopen dlsym" || check_lib libdl dlfcn.h "dlopen dlsym" -ldl
6313
6314 check_lib libm math.h sin -lm
6315
6316 atan2f_args=2
6317 copysign_args=2
6318 hypot_args=2
6319 ldexpf_args=2
6320 powf_args=2
6321
6322 for func in $MATH_FUNCS; do
6323     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
6324 done
6325
6326 for func in $COMPLEX_FUNCS; do
6327     eval check_complexfunc $func \${${func}_args:-1}
6328 done
6329
6330 # these are off by default, so fail if requested and not available
6331 enabled avisynth          && require_headers "avisynth/avisynth_c.h"
6332 enabled cuda_nvcc         && { check_nvcc cuda_nvcc || die "ERROR: failed checking for nvcc."; }
6333 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
6334 enabled decklink          && { require_headers DeckLinkAPI.h &&
6335                                { test_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a0a0000" || die "ERROR: Decklink API version must be >= 10.10"; } }
6336 enabled frei0r            && require_headers "frei0r.h dlfcn.h"
6337 enabled gmp               && require gmp gmp.h mpz_export -lgmp
6338 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init
6339 enabled jni               && { [ $target_os = "android" ] && check_headers jni.h && enabled pthreads || die "ERROR: jni not found"; }
6340 enabled ladspa            && require_headers "ladspa.h dlfcn.h"
6341 enabled libaom            && require_pkg_config libaom "aom >= 1.0.0" aom/aom_codec.h aom_codec_version
6342 enabled libaribb24        && { check_pkg_config libaribb24 "aribb24 > 1.0.3" "aribb24/aribb24.h" arib_instance_new ||
6343                                { enabled gpl && require_pkg_config libaribb24 aribb24 "aribb24/aribb24.h" arib_instance_new; } ||
6344                                die "ERROR: libaribb24 requires version higher than 1.0.3 or --enable-gpl."; }
6345 enabled lv2               && require_pkg_config lv2 lilv-0 "lilv/lilv.h" lilv_world_new
6346 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
6347 enabled libass            && require_pkg_config libass libass ass/ass.h ass_library_init
6348 enabled libbluray         && require_pkg_config libbluray libbluray libbluray/bluray.h bd_open
6349 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
6350 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
6351                              { check_lib libcelt celt/celt.h celt_decoder_create_custom -lcelt0 ||
6352                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
6353 enabled libcaca           && require_pkg_config libcaca caca caca.h caca_create_canvas
6354 enabled libcodec2         && require libcodec2 codec2/codec2.h codec2_create -lcodec2
6355 enabled libdav1d          && require_pkg_config libdav1d "dav1d >= 0.5.0" "dav1d/dav1d.h" dav1d_version
6356 enabled libdavs2          && require_pkg_config libdavs2 "davs2 >= 1.6.0" davs2.h davs2_decoder_open
6357 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
6358 enabled libdrm            && require_pkg_config libdrm libdrm xf86drm.h drmGetVersion
6359 enabled libfdk_aac        && { check_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
6360                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
6361                                  warn "using libfdk without pkg-config"; } }
6362 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"
6363 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_extralibs
6364 enabled fontconfig        && enable libfontconfig
6365 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
6366 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
6367 enabled libfribidi        && require_pkg_config libfribidi fribidi fribidi.h fribidi_version_info
6368 enabled libglslang        && require_cpp libglslang glslang/SPIRV/GlslangToSpv.h "glslang::TIntermediate*" -lglslang -lMachineIndependent -lOSDependent -lHLSL -lOGLCompiler -lGenericCodeGen -lSPVRemapper -lSPIRV -lSPIRV-Tools-opt -lSPIRV-Tools -lpthread -lstdc++
6369 enabled libgme            && { check_pkg_config libgme libgme gme/gme.h gme_new_emu ||
6370                                require libgme gme/gme.h gme_new_emu -lgme -lstdc++; }
6371 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
6372                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
6373                                done || die "ERROR: libgsm not found"; }
6374 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc $pthreads_extralibs
6375 enabled libklvanc         && require libklvanc libklvanc/vanc.h klvanc_context_create -lklvanc
6376 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
6377 enabled liblensfun        && require_pkg_config liblensfun lensfun lensfun.h lf_db_new
6378 # While it may appear that require is being used as a pkg-config
6379 # fallback for libmfx, it is actually being used to detect a different
6380 # installation route altogether.  If libmfx is installed via the Intel
6381 # Media SDK or Intel Media Server Studio, these don't come with
6382 # pkg-config support.  Instead, users should make sure that the build
6383 # can find the libraries and headers through other means.
6384 enabled libmfx            && { check_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit ||
6385                                { require libmfx "mfx/mfxvideo.h" MFXInit "-llibmfx $advapi32_extralibs" && warn "using libmfx without pkg-config"; } }
6386 if enabled libmfx; then
6387    check_cc MFX_CODEC_VP9 "mfx/mfxvp9.h mfx/mfxstructures.h" "MFX_CODEC_VP9"
6388 fi
6389
6390 enabled libmodplug        && require_pkg_config libmodplug libmodplug libmodplug/modplug.h ModPlug_Load
6391 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame $libm_extralibs
6392 enabled libmysofa         && { check_pkg_config libmysofa libmysofa mysofa.h mysofa_neighborhood_init_withstepdefine ||
6393                                require libmysofa mysofa.h mysofa_neighborhood_init_withstepdefine -lmysofa $zlib_extralibs; }
6394 enabled libnpp            && { check_lib libnpp npp.h nppGetLibVersion -lnppig -lnppicc -lnppc -lnppidei ||
6395                                check_lib libnpp npp.h nppGetLibVersion -lnppi -lnppc -lnppidei ||
6396                                die "ERROR: libnpp not found"; }
6397 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
6398 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
6399 enabled libopencv         && { check_headers opencv2/core/core_c.h &&
6400                                { check_pkg_config libopencv opencv opencv2/core/core_c.h cvCreateImageHeader ||
6401                                  require libopencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
6402                                require_pkg_config libopencv opencv opencv/cxcore.h cvCreateImageHeader; }
6403 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
6404 enabled libopenjpeg       && { check_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version ||
6405                                { require_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } }
6406 enabled libopenmpt        && require_pkg_config libopenmpt "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create -lstdc++ && append libopenmpt_extralibs "-lstdc++"
6407 enabled libopenvino       && require libopenvino c_api/ie_c_api.h ie_c_api_version -linference_engine_c_api
6408 enabled libopus           && {
6409     enabled libopus_decoder && {
6410         require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
6411     }
6412     enabled libopus_encoder && {
6413         require_pkg_config libopus opus opus_multistream.h opus_multistream_surround_encoder_create
6414     }
6415 }
6416 enabled libpulse          && require_pkg_config libpulse libpulse pulse/pulseaudio.h pa_context_new
6417 enabled librabbitmq       && require_pkg_config librabbitmq "librabbitmq >= 0.7.1" amqp.h amqp_new_connection
6418 enabled librav1e          && require_pkg_config librav1e "rav1e >= 0.4.0" rav1e.h rav1e_context_new
6419 enabled librist           && require_pkg_config librist "librist >= 0.2" librist/librist.h rist_receiver_create
6420 enabled librsvg           && require_pkg_config librsvg librsvg-2.0 librsvg-2.0/librsvg/rsvg.h rsvg_handle_render_cairo
6421 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
6422 enabled librubberband     && require_pkg_config librubberband "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new -lstdc++ && append librubberband_extralibs "-lstdc++"
6423 enabled libshine          && require_pkg_config libshine shine shine/layer3.h shine_encode_buffer
6424 enabled libsmbclient      && { check_pkg_config libsmbclient smbclient libsmbclient.h smbc_init ||
6425                                require libsmbclient libsmbclient.h smbc_init -lsmbclient; }
6426 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy -lstdc++
6427 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
6428 enabled libssh            && require_pkg_config libssh libssh libssh/sftp.h sftp_init
6429 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init
6430 enabled libsrt            && require_pkg_config libsrt "srt >= 1.3.0" srt/srt.h srt_socket
6431 enabled libsvtav1         && require_pkg_config libsvtav1 "SvtAv1Enc >= 0.8.4" EbSvtAv1Enc.h svt_av1_enc_init_handle
6432 enabled libtensorflow     && require libtensorflow tensorflow/c/c_api.h TF_Version -ltensorflow
6433 enabled libtesseract      && require_pkg_config libtesseract tesseract tesseract/capi.h TessBaseAPICreate
6434 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
6435 enabled libtls            && require_pkg_config libtls libtls tls.h tls_configure
6436 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
6437                              { check_lib libtwolame twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
6438                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
6439 enabled libuavs3d         && require_pkg_config libuavs3d "uavs3d >= 1.1.41" uavs3d.h uavs3d_decode
6440 enabled libv4l2           && require_pkg_config libv4l2 libv4l2 libv4l2.h v4l2_ioctl
6441 enabled libvidstab        && require_pkg_config libvidstab "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
6442 enabled libvmaf           && require_pkg_config libvmaf "libvmaf >= 1.5.2" libvmaf.h compute_vmaf
6443 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
6444 enabled libvorbis         && require_pkg_config libvorbis vorbis vorbis/codec.h vorbis_info_init &&
6445                              require_pkg_config libvorbisenc vorbisenc vorbis/vorbisenc.h vorbis_encode_init
6446
6447 enabled libvpx            && {
6448     enabled libvpx_vp8_decoder && {
6449         check_pkg_config libvpx_vp8_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
6450             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"
6451     }
6452     enabled libvpx_vp8_encoder && {
6453         check_pkg_config libvpx_vp8_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
6454             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"
6455     }
6456     enabled libvpx_vp9_decoder && {
6457         check_pkg_config libvpx_vp9_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
6458             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"
6459     }
6460     enabled libvpx_vp9_encoder && {
6461         check_pkg_config libvpx_vp9_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
6462             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"
6463     }
6464     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
6465         die "libvpx enabled but no supported decoders found"
6466     fi
6467 }
6468
6469 enabled libwebp           && {
6470     enabled libwebp_encoder      && require_pkg_config libwebp "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
6471     enabled libwebp_anim_encoder && check_pkg_config libwebp_anim_encoder "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit; }
6472 enabled libx264           && { check_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode ||
6473                                { require libx264 "stdint.h x264.h" x264_encoder_encode "-lx264 $pthreads_extralibs $libm_extralibs" &&
6474                                  warn "using libx264 without pkg-config"; } } &&
6475                              require_cpp_condition libx264 x264.h "X264_BUILD >= 118" &&
6476                              check_cpp_condition libx262 x264.h "X264_MPEG2"
6477 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
6478                              require_cpp_condition libx265 x265.h "X265_BUILD >= 70"
6479 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode "-lxavs $pthreads_extralibs $libm_extralibs"
6480 enabled libxavs2          && require_pkg_config libxavs2 "xavs2 >= 1.3.0" "stdint.h xavs2.h" xavs2_api_get
6481 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
6482 enabled libzimg           && require_pkg_config libzimg "zimg >= 2.7.0" zimg.h zimg_get_api_version
6483 enabled libzmq            && require_pkg_config libzmq "libzmq >= 4.2.1" zmq.h zmq_ctx_new
6484 enabled libzvbi           && require_pkg_config libzvbi zvbi-0.2 libzvbi.h vbi_decoder_new &&
6485                              { test_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
6486                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
6487 enabled libxml2           && require_pkg_config libxml2 libxml-2.0 libxml2/libxml/xmlversion.h xmlCheckVersion
6488 enabled mbedtls           && { check_pkg_config mbedtls mbedtls mbedtls/x509_crt.h mbedtls_x509_crt_init ||
6489                                check_pkg_config mbedtls mbedtls mbedtls/ssl.h mbedtls_ssl_init ||
6490                                check_lib mbedtls mbedtls/ssl.h mbedtls_ssl_init -lmbedtls -lmbedx509 -lmbedcrypto ||
6491                                die "ERROR: mbedTLS not found"; }
6492 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
6493 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
6494                                { ! enabled cross_compile &&
6495                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
6496                                  add_ldflags -L/opt/vc/lib/ &&
6497                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
6498                                die "ERROR: mmal not found" &&
6499                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
6500 enabled openal            && { { for al_extralibs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
6501                                check_lib openal 'AL/al.h' alGetError "${al_extralibs}" && break; done } ||
6502                                die "ERROR: openal not found"; } &&
6503                              { test_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
6504                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
6505 enabled opencl            && { check_pkg_config opencl OpenCL CL/cl.h clEnqueueNDRangeKernel ||
6506                                check_lib opencl OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
6507                                check_lib opencl CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
6508                                die "ERROR: opencl not found"; } &&
6509                              { test_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
6510                                test_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
6511                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
6512 enabled opengl            && { check_lib opengl GL/glx.h glXGetProcAddress "-lGL" ||
6513                                check_lib opengl windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
6514                                check_lib opengl OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
6515                                check_lib opengl ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
6516                                die "ERROR: opengl not found."
6517                              }
6518 enabled omx_rpi           && { test_code cc OMX_Core.h OMX_IndexConfigBrcmVideoRequestIFrame ||
6519                                { ! enabled cross_compile &&
6520                                  add_cflags -isystem/opt/vc/include/IL &&
6521                                  test_code cc OMX_Core.h OMX_IndexConfigBrcmVideoRequestIFrame; } ||
6522                                die "ERROR: OpenMAX IL headers from raspberrypi/firmware not found"; } &&
6523                              enable omx
6524 enabled omx               && require_headers OMX_Core.h
6525 enabled openssl           && { check_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
6526                                check_pkg_config openssl openssl openssl/ssl.h SSL_library_init ||
6527                                check_lib openssl openssl/ssl.h OPENSSL_init_ssl -lssl -lcrypto ||
6528                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
6529                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
6530                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
6531                                die "ERROR: openssl not found"; }
6532 enabled pocketsphinx      && require_pkg_config pocketsphinx pocketsphinx pocketsphinx/pocketsphinx.h ps_init
6533 enabled rkmpp             && { require_pkg_config rkmpp rockchip_mpp  rockchip/rk_mpi.h mpp_create &&
6534                                require_pkg_config rockchip_mpp "rockchip_mpp >= 1.3.7" rockchip/rk_mpi.h mpp_create &&
6535                                { enabled libdrm ||
6536                                  die "ERROR: rkmpp requires --enable-libdrm"; }
6537                              }
6538 enabled vapoursynth       && require_pkg_config vapoursynth "vapoursynth-script >= 42" VSScript.h vsscript_init
6539
6540
6541 if enabled gcrypt; then
6542     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
6543     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
6544         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
6545         gcrypt_extralibs=$("${GCRYPT_CONFIG}" --libs)
6546         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_extralibs ||
6547             die "ERROR: gcrypt not found"
6548         add_cflags $gcrypt_cflags
6549     else
6550         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
6551     fi
6552 fi
6553
6554 if enabled sdl2; then
6555     SDL2_CONFIG="${cross_prefix}sdl2-config"
6556     test_pkg_config sdl2 "sdl2 >= 2.0.1 sdl2 < 2.1.0" SDL_events.h SDL_PollEvent
6557     if disabled sdl2 && "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
6558         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
6559         sdl2_extralibs=$("${SDL2_CONFIG}" --libs)
6560         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
6561         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
6562         check_func_headers SDL_events.h SDL_PollEvent $sdl2_extralibs $sdl2_cflags &&
6563             enable sdl2
6564     fi
6565     if test $target_os = "mingw32"; then
6566         sdl2_extralibs=$(filter_out '-mwindows' $sdl2_extralibs)
6567     fi
6568 fi
6569
6570 if enabled decklink; then
6571     case $target_os in
6572         mingw32*|mingw64*|win32|win64)
6573             decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
6574             decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
6575             ;;
6576     esac
6577 fi
6578
6579 enabled securetransport &&
6580     check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
6581     check_lib securetransport "Security/SecureTransport.h Security/Security.h" "SSLCreateContext" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" ||
6582         disable securetransport
6583
6584 enabled securetransport &&
6585     check_func SecItemImport "-Wl,-framework,CoreFoundation -Wl,-framework,Security"
6586
6587 enabled schannel &&
6588     check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
6589     test_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" &&
6590     schannel_extralibs="-lsecur32" ||
6591         disable schannel
6592
6593 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
6594 enabled makeinfo \
6595     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
6596     && enable makeinfo_html || disable makeinfo_html
6597 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
6598 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
6599 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
6600 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
6601
6602 # check V4L2 codecs available in the API
6603 if enabled v4l2_m2m; then
6604     check_headers linux/fb.h
6605     check_headers linux/videodev2.h
6606     test_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6607     check_cc v4l2_m2m linux/videodev2.h "int i = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_VIDEO_M2M | V4L2_BUF_FLAG_LAST;"
6608     check_cc vc1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VC1_ANNEX_G;"
6609     check_cc mpeg1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG1;"
6610     check_cc mpeg2_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG2;"
6611     check_cc mpeg4_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG4;"
6612     check_cc hevc_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_HEVC;"
6613     check_cc h263_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H263;"
6614     check_cc h264_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H264;"
6615     check_cc vp8_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP8;"
6616     check_cc vp9_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP9;"
6617 fi
6618
6619 check_headers sys/videoio.h
6620 test_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6621
6622 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
6623 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
6624 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
6625 # w32api 3.12 had it defined wrong
6626 check_cpp_condition vfwcap_defines vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER"
6627
6628 check_type "dshow.h" IBaseFilter
6629
6630 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
6631 check_headers "dev/bktr/ioctl_meteor.h dev/bktr/ioctl_bt848.h"                   ||
6632     check_headers "machine/ioctl_meteor.h machine/ioctl_bt848.h"                 ||
6633     check_headers "dev/video/meteor/ioctl_meteor.h dev/video/bktr/ioctl_bt848.h" ||
6634     check_headers "dev/ic/bt8xx.h"
6635
6636 if check_struct sys/soundcard.h audio_buf_info bytes; then
6637     enable_sanitized sys/soundcard.h
6638 else
6639     test_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_sanitized sys/soundcard.h
6640     #include <sys/soundcard.h>
6641     audio_buf_info abc;
6642 EOF
6643 fi
6644
6645 enabled alsa && { check_pkg_config alsa alsa "alsa/asoundlib.h" snd_pcm_htimestamp ||
6646                   check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound; }
6647
6648 enabled libjack &&
6649     require_pkg_config libjack jack jack/jack.h jack_port_get_latency_range
6650
6651 enabled sndio && check_lib sndio sndio.h sio_open -lsndio
6652
6653 if enabled libcdio; then
6654     check_pkg_config libcdio libcdio_paranoia "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open ||
6655     check_pkg_config libcdio libcdio_paranoia "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open ||
6656     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6657     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6658     die "ERROR: No usable libcdio/cdparanoia found"
6659 fi
6660
6661 enabled libxcb && check_pkg_config libxcb "xcb >= 1.4" xcb/xcb.h xcb_connect ||
6662     disable libxcb_shm libxcb_shape libxcb_xfixes
6663
6664 if enabled libxcb; then
6665     enabled libxcb_shm    && check_pkg_config libxcb_shm    xcb-shm    xcb/shm.h    xcb_shm_attach
6666     enabled libxcb_shape  && check_pkg_config libxcb_shape  xcb-shape  xcb/shape.h  xcb_shape_get_rectangles
6667     enabled libxcb_xfixes && check_pkg_config libxcb_xfixes xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image
6668 fi
6669
6670 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6671
6672 # d3d11va requires linking directly to dxgi and d3d11 if not building for
6673 # the desktop api partition
6674 test_cpp <<EOF && enable uwp && d3d11va_extralibs="-ldxgi -ld3d11"
6675 #ifdef WINAPI_FAMILY
6676 #include <winapifamily.h>
6677 #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
6678 #error desktop, not uwp
6679 #else
6680 // WINAPI_FAMILY_APP, WINAPI_FAMILY_PHONE_APP => UWP
6681 #endif
6682 #else
6683 #error no family set
6684 #endif
6685 EOF
6686
6687 enabled libdrm &&
6688     check_pkg_config libdrm_getfb2 libdrm "xf86drmMode.h" drmModeGetFB2
6689
6690 enabled vaapi &&
6691     check_pkg_config vaapi "libva >= 0.35.0" "va/va.h" vaInitialize
6692
6693 if enabled vaapi; then
6694     check_pkg_config vaapi_drm "libva-drm" "va/va_drm.h" vaGetDisplayDRM
6695
6696     if enabled xlib; then
6697         check_pkg_config vaapi_x11 "libva-x11" "va/va_x11.h" vaGetDisplay
6698     fi
6699
6700     check_cpp_condition vaapi_1 "va/va.h" "VA_CHECK_VERSION(1, 0, 0)"
6701
6702     check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
6703     check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
6704     check_struct "va/va.h" "VADecPictureParameterBufferAV1" bit_depth_idx
6705     check_type   "va/va.h va/va_vpp.h" "VAProcFilterParameterBufferHDRToneMapping"
6706     check_struct "va/va.h va/va_vpp.h" "VAProcPipelineCaps" rotation_flags
6707     check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
6708     check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
6709     check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
6710     check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
6711 fi
6712
6713 if enabled_all opencl libdrm ; then
6714     check_type "CL/cl_intel.h" "clCreateImageFromFdINTEL_fn" &&
6715         enable opencl_drm_beignet
6716     check_func_headers "CL/cl_ext.h" clImportMemoryARM &&
6717         enable opencl_drm_arm
6718 fi
6719
6720 if enabled_all opencl vaapi ; then
6721     if enabled opencl_drm_beignet ; then
6722         enable opencl_vaapi_beignet
6723     else
6724         check_type "CL/cl.h CL/cl_va_api_media_sharing_intel.h" "clCreateFromVA_APIMediaSurfaceINTEL_fn" &&
6725             enable opencl_vaapi_intel_media
6726     fi
6727 fi
6728
6729 if enabled_all opencl dxva2 ; then
6730     check_type "CL/cl_dx9_media_sharing.h" cl_dx9_surface_info_khr &&
6731         enable opencl_dxva2
6732 fi
6733
6734 if enabled_all opencl d3d11va ; then
6735     check_type "CL/cl_d3d11.h" clGetDeviceIDsFromD3D11KHR_fn &&
6736         enable opencl_d3d11
6737 fi
6738
6739 enabled vdpau &&
6740     check_cpp_condition vdpau vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP"
6741
6742 enabled vdpau &&
6743     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
6744
6745 enabled crystalhd && check_lib crystalhd "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd
6746
6747 enabled vulkan &&
6748     require_pkg_config vulkan "vulkan >= 1.1.97" "vulkan/vulkan.h" vkCreateInstance
6749
6750 if enabled x86; then
6751     case $target_os in
6752         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6753             ;;
6754         *)
6755             disable ffnvcodec cuvid nvdec nvenc
6756             ;;
6757     esac
6758 elif enabled_any aarch64 ppc64 && ! enabled bigendian; then
6759     case $target_os in
6760         linux)
6761             ;;
6762         *)
6763             disable ffnvcodec cuvid nvdec nvenc
6764             ;;
6765     esac
6766 else
6767     disable ffnvcodec cuvid nvdec nvenc
6768 fi
6769
6770 enabled ffnvcodec && enable cuda
6771
6772 enabled nvenc &&
6773     test_cc -I$source_path <<EOF || disable nvenc
6774 #include <ffnvcodec/nvEncodeAPI.h>
6775 NV_ENCODE_API_FUNCTION_LIST flist;
6776 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6777 int main(void) { return 0; }
6778 EOF
6779
6780 if enabled_any nvdec cuvid; then
6781     check_type "ffnvcodec/dynlink_cuda.h ffnvcodec/dynlink_cuviddec.h" "CUVIDAV1PICPARAMS"
6782 fi
6783
6784 enabled amf &&
6785     check_cpp_condition amf "AMF/core/Version.h" \
6786         "(AMF_VERSION_MAJOR << 48 | AMF_VERSION_MINOR << 32 | AMF_VERSION_RELEASE << 16 | AMF_VERSION_BUILD_NUM) >= 0x0001000400090000"
6787
6788 # Funny iconv installations are not unusual, so check it after all flags have been set
6789 if enabled libc_iconv; then
6790     check_func_headers iconv.h iconv
6791 elif enabled iconv; then
6792     check_func_headers iconv.h iconv || check_lib iconv iconv.h iconv -liconv
6793 fi
6794
6795 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6796
6797 # add some useful compiler flags if supported
6798 check_cflags -Wdeclaration-after-statement
6799 check_cflags -Wall
6800 check_cflags -Wdisabled-optimization
6801 check_cflags -Wpointer-arith
6802 check_cflags -Wredundant-decls
6803 check_cflags -Wwrite-strings
6804 check_cflags -Wtype-limits
6805 check_cflags -Wundef
6806 check_cflags -Wmissing-prototypes
6807 check_cflags -Wno-pointer-to-int-cast
6808 check_cflags -Wstrict-prototypes
6809 check_cflags -Wempty-body
6810
6811 if enabled extra_warnings; then
6812     check_cflags -Wcast-qual
6813     check_cflags -Wextra
6814     check_cflags -Wpedantic
6815 fi
6816
6817 check_disable_warning(){
6818     warning_flag=-W${1#-Wno-}
6819     test_cflags $unknown_warning_flags $warning_flag && add_cflags $1
6820 }
6821
6822 test_cflags -Werror=unused-command-line-argument &&
6823     append unknown_warning_flags "-Werror=unused-command-line-argument"
6824 test_cflags -Werror=unknown-warning-option &&
6825     append unknown_warning_flags "-Werror=unknown-warning-option"
6826
6827 check_disable_warning -Wno-parentheses
6828 check_disable_warning -Wno-switch
6829 check_disable_warning -Wno-format-zero-length
6830 check_disable_warning -Wno-pointer-sign
6831 check_disable_warning -Wno-unused-const-variable
6832 check_disable_warning -Wno-bool-operation
6833 check_disable_warning -Wno-char-subscripts
6834
6835 check_disable_warning_headers(){
6836     warning_flag=-W${1#-Wno-}
6837     test_cflags $warning_flag && add_cflags_headers $1
6838 }
6839
6840 check_disable_warning_headers -Wno-deprecated-declarations
6841 check_disable_warning_headers -Wno-unused-variable
6842
6843 test_cc <<EOF && enable blocks_extension
6844 void (^block)(void);
6845 EOF
6846
6847 # add some linker flags
6848 check_ldflags -Wl,--warn-common
6849 check_ldflags -Wl,-rpath-link=:libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6850 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir && add_ldsoflags -Wl,-rpath,$libdir
6851 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6852
6853 # add some strip flags
6854 check_stripflags -x
6855
6856 enabled neon_clobber_test &&
6857     check_ldflags -Wl,--wrap,avcodec_open2              \
6858                   -Wl,--wrap,avcodec_decode_audio4      \
6859                   -Wl,--wrap,avcodec_decode_video2      \
6860                   -Wl,--wrap,avcodec_decode_subtitle2   \
6861                   -Wl,--wrap,avcodec_encode_audio2      \
6862                   -Wl,--wrap,avcodec_encode_video2      \
6863                   -Wl,--wrap,avcodec_encode_subtitle    \
6864                   -Wl,--wrap,avcodec_send_packet        \
6865                   -Wl,--wrap,avcodec_receive_packet     \
6866                   -Wl,--wrap,avcodec_send_frame         \
6867                   -Wl,--wrap,avcodec_receive_frame      \
6868                   -Wl,--wrap,swr_convert                \
6869                   -Wl,--wrap,avresample_convert ||
6870     disable neon_clobber_test
6871
6872 enabled xmm_clobber_test &&
6873     check_ldflags -Wl,--wrap,avcodec_open2              \
6874                   -Wl,--wrap,avcodec_decode_audio4      \
6875                   -Wl,--wrap,avcodec_decode_video2      \
6876                   -Wl,--wrap,avcodec_decode_subtitle2   \
6877                   -Wl,--wrap,avcodec_encode_audio2      \
6878                   -Wl,--wrap,avcodec_encode_video2      \
6879                   -Wl,--wrap,avcodec_encode_subtitle    \
6880                   -Wl,--wrap,avcodec_send_packet        \
6881                   -Wl,--wrap,avcodec_receive_packet     \
6882                   -Wl,--wrap,avcodec_send_frame         \
6883                   -Wl,--wrap,avcodec_receive_frame      \
6884                   -Wl,--wrap,swr_convert                \
6885                   -Wl,--wrap,avresample_convert         \
6886                   -Wl,--wrap,sws_scale ||
6887     disable xmm_clobber_test
6888
6889 check_ld "cc" proper_dce <<EOF
6890 extern const int array[512];
6891 static inline int func(void) { return array[0]; }
6892 int main(void) { return 0; }
6893 EOF
6894
6895 if enabled proper_dce; then
6896     echo "X { local: *; };" > $TMPV
6897     if test_ldflags -Wl,${version_script},$TMPV; then
6898         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6899         quotes='""'
6900         test_cc <<EOF && enable symver_asm_label
6901 void ff_foo(void) __asm__ ("av_foo@VERSION");
6902 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6903 EOF
6904         test_cc <<EOF && enable symver_gnu_asm
6905 __asm__(".symver ff_foo,av_foo@VERSION");
6906 void ff_foo(void) {}
6907 EOF
6908     fi
6909 fi
6910
6911 if [ -z "$optflags" ]; then
6912     if enabled small; then
6913         optflags=$cflags_size
6914     elif enabled optimizations; then
6915         optflags=$cflags_speed
6916     else
6917         optflags=$cflags_noopt
6918     fi
6919 fi
6920
6921 check_optflags(){
6922     check_cflags "$@"
6923     enabled lto && check_ldflags "$@"
6924 }
6925
6926 check_optflags $optflags
6927 check_optflags -fno-math-errno
6928 check_optflags -fno-signed-zeros
6929
6930 if enabled lto; then
6931     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6932     check_cflags  -flto
6933     check_ldflags -flto $cpuflags
6934     disable inline_asm_direct_symbol_refs
6935 fi
6936
6937 enabled ftrapv && check_cflags -ftrapv
6938
6939 test_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6940 int x;
6941 EOF
6942
6943
6944 if enabled icc; then
6945     # Just warnings, no remarks
6946     check_cflags -w1
6947     # -wd: Disable following warnings
6948     # 144, 167, 556: -Wno-pointer-sign
6949     # 188: enumerated type mixed with another type
6950     # 1292: attribute "foo" ignored
6951     # 1419: external declaration in primary source file
6952     # 10006: ignoring unknown option -fno-signed-zeros
6953     # 10148: ignoring unknown option -Wno-parentheses
6954     # 10156: ignoring option '-W'; no argument required
6955     # 13200: No EMMS instruction before call to function
6956     # 13203: No EMMS instruction before return from function
6957     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6958     # 11030: Warning unknown option --as-needed
6959     # 10156: ignoring option '-export'; no argument required
6960     check_ldflags -wd10156,11030
6961     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6962     enable ebp_available
6963     # The test above does not test linking
6964     enabled lto && disable symver_asm_label
6965     if enabled x86_32; then
6966         icc_version=$($cc -dumpversion)
6967         test ${icc_version%%.*} -ge 11 &&
6968             check_cflags -falign-stack=maintain-16-byte ||
6969             disable aligned_stack
6970     fi
6971 elif enabled gcc; then
6972     check_optflags -fno-tree-vectorize
6973     check_cflags -Werror=format-security
6974     check_cflags -Werror=implicit-function-declaration
6975     check_cflags -Werror=missing-prototypes
6976     check_cflags -Werror=return-type
6977     check_cflags -Werror=vla
6978     check_cflags -Wformat
6979     check_cflags -fdiagnostics-color=auto
6980     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6981     if enabled x86_32; then
6982         case $target_os in
6983         *bsd*)
6984             # BSDs don't guarantee a 16 byte aligned stack, but we can
6985             # request GCC to try to maintain 16 byte alignment throughout
6986             # function calls. Library entry points that might call assembly
6987             # functions align the stack. (The parameter means 2^4 bytes.)
6988             check_cflags -mpreferred-stack-boundary=4
6989             ;;
6990         esac
6991     fi
6992 elif enabled llvm_gcc; then
6993     check_cflags -mllvm -stack-alignment=16
6994 elif enabled clang; then
6995     if enabled x86_32; then
6996         # Clang doesn't support maintaining alignment without assuming the
6997         # same alignment in every function. If 16 byte alignment would be
6998         # enabled, one would also have to either add attribute_align_arg on
6999         # every single entry point into the libraries or enable -mstackrealign
7000         # (doing stack realignment in every single function).
7001         case $target_os in
7002         mingw32|win32|*bsd*)
7003             disable aligned_stack
7004             ;;
7005         *)
7006             check_cflags -mllvm -stack-alignment=16
7007             check_cflags -mstack-alignment=16
7008             ;;
7009         esac
7010     else
7011         check_cflags -mllvm -stack-alignment=16
7012         check_cflags -mstack-alignment=16
7013     fi
7014     check_cflags -Qunused-arguments
7015     check_cflags -Werror=implicit-function-declaration
7016     check_cflags -Werror=missing-prototypes
7017     check_cflags -Werror=return-type
7018 elif enabled cparser; then
7019     add_cflags -Wno-missing-variable-declarations
7020     add_cflags -Wno-empty-statement
7021 elif enabled armcc; then
7022     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
7023     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
7024     # 2523: use of inline assembly is deprecated
7025     add_cflags -W${armcc_opt},--diag_suppress=2523
7026     add_cflags -W${armcc_opt},--diag_suppress=1207
7027     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
7028     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
7029     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
7030     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
7031 elif enabled pathscale; then
7032     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
7033     disable inline_asm
7034 elif enabled_any msvc icl; then
7035     enabled x86_32 && disable aligned_stack
7036     enabled_all x86_32 debug && add_cflags -Oy-
7037     enabled debug && add_ldflags -debug
7038     enable pragma_deprecated
7039     if enabled icl; then
7040         # -Qansi-alias is basically -fstrict-aliasing, but does not work
7041         # (correctly) on icl 13.x.
7042         test_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
7043             add_cflags -Qansi-alias
7044         # Some inline asm is not compilable in debug
7045         if enabled debug; then
7046             disable ebp_available
7047             disable ebx_available
7048         fi
7049     fi
7050     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
7051     check_cpp_condition log2 crtversion.h "_VC_CRT_MAJOR_VERSION >= 12"
7052     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
7053     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
7054     # (as it ends up if the restrict redefine is done before including stdlib.h), while
7055     # MSVC 2013 and newer can handle it fine.
7056     # If this declspec fails, force including stdlib.h before the restrict redefinition
7057     # happens in config.h.
7058     if [ $restrict_keyword != restrict ]; then
7059         test_cc <<EOF || add_cflags -FIstdlib.h
7060 __declspec($restrict_keyword) void *foo(int);
7061 EOF
7062     fi
7063     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
7064     # Issue has been fixed in MSVC v19.00.24218.
7065     test_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
7066         check_cflags -d2SSAOptimizer-
7067     # enable utf-8 source processing on VS2015 U2 and newer
7068     test_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
7069         add_cflags -utf-8
7070 fi
7071
7072 for pfx in "" host_; do
7073     varname=${pfx%_}cc_type
7074     eval "type=\$$varname"
7075     if [ "$type" = "msvc" ]; then
7076         test_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
7077 static inline int foo(int a) { return a; }
7078 EOF
7079     fi
7080 done
7081
7082 case $as_type in
7083     clang)
7084         add_asflags -Qunused-arguments
7085     ;;
7086 esac
7087
7088 case $ld_type in
7089     clang)
7090         check_ldflags -Qunused-arguments
7091     ;;
7092 esac
7093
7094 enable frame_thread_encoder
7095
7096 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
7097
7098 check_deps $CONFIG_LIST       \
7099            $CONFIG_EXTRA      \
7100            $HAVE_LIST         \
7101            $ALL_COMPONENTS    \
7102
7103 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"
7104 enabled avresample && warn "Building with deprecated library libavresample"
7105
7106 case $target_os in
7107 haiku)
7108     disable memalign
7109     disable posix_memalign
7110     ;;
7111 *-dos|freedos|opendos)
7112     if test_cpp_condition sys/version.h "defined(__DJGPP__) && __DJGPP__ == 2 && __DJGPP_MINOR__ == 5"; then
7113         disable memalign
7114     fi
7115     ;;
7116 esac
7117
7118 flatten_extralibs(){
7119     nested_entries=
7120     list_name=$1
7121     eval list=\$${1}
7122     for entry in $list; do
7123         entry_copy=$entry
7124         resolve entry_copy
7125         flat_entries=
7126         for e in $entry_copy; do
7127             case $e in
7128                 *_extralibs) nested_entries="$nested_entries$e ";;
7129                           *) flat_entries="$flat_entries$e ";;
7130             esac
7131         done
7132         eval $entry="\$flat_entries"
7133     done
7134     append $list_name "$nested_entries"
7135
7136     resolve nested_entries
7137     if test -n "$(filter '*_extralibs' $nested_entries)"; then
7138         flatten_extralibs $list_name
7139     fi
7140 }
7141
7142 flatten_extralibs_wrapper(){
7143     list_name=$1
7144     flatten_extralibs $list_name
7145     unique $list_name
7146     resolve $list_name
7147     eval $list_name=\$\(\$ldflags_filter \$$list_name\)
7148     eval printf \''%s'\' \""\$$list_name"\"
7149 }
7150
7151 for linkunit in $LIBRARY_LIST; do
7152     unset current_extralibs
7153     eval components=\$$(toupper ${linkunit})_COMPONENTS_LIST
7154     for comp in ${components}; do
7155         enabled $comp || continue
7156         comp_extralibs="${comp}_extralibs"
7157         append current_extralibs $comp_extralibs
7158     done
7159     eval prepend ${linkunit}_extralibs $current_extralibs
7160 done
7161
7162 for linkunit in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
7163     eval ${linkunit}_extralibs=\$\(flatten_extralibs_wrapper ${linkunit}_extralibs\)
7164 done
7165
7166 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
7167
7168 for thread in $THREADS_LIST; do
7169     if enabled $thread; then
7170         test -n "$thread_type" &&
7171             die "ERROR: Only one thread type must be selected." ||
7172             thread_type="$thread"
7173     fi
7174 done
7175
7176 if disabled stdatomic; then
7177     if enabled atomics_gcc; then
7178         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
7179     elif enabled atomics_win32; then
7180         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
7181     elif enabled atomics_suncc; then
7182         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
7183     elif enabled pthreads; then
7184         add_compat atomics/pthread/stdatomic.o
7185         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
7186     else
7187         enabled threads && die "Threading is enabled, but no atomics are available"
7188         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
7189     fi
7190 fi
7191
7192 # Check if requested libraries were found.
7193 for lib in $AUTODETECT_LIBS; do
7194     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
7195 done
7196
7197 enabled zlib && add_cppflags -DZLIB_CONST
7198
7199 # conditional library dependencies, in any order
7200 enabled afftdn_filter       && prepend avfilter_deps "avcodec"
7201 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
7202 enabled afir_filter         && prepend avfilter_deps "avcodec"
7203 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
7204 enabled aresample_filter    && prepend avfilter_deps "swresample"
7205 enabled atempo_filter       && prepend avfilter_deps "avcodec"
7206 enabled bm3d_filter         && prepend avfilter_deps "avcodec"
7207 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
7208 enabled convolve_filter     && prepend avfilter_deps "avcodec"
7209 enabled deconvolve_filter   && prepend avfilter_deps "avcodec"
7210 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
7211 enabled elbg_filter         && prepend avfilter_deps "avcodec"
7212 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
7213 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
7214 enabled firequalizer_filter && prepend avfilter_deps "avcodec"
7215 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
7216 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
7217 enabled pan_filter          && prepend avfilter_deps "swresample"
7218 enabled pp_filter           && prepend avfilter_deps "postproc"
7219 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
7220 enabled resample_filter && prepend avfilter_deps "avresample"
7221 enabled sab_filter          && prepend avfilter_deps "swscale"
7222 enabled scale_filter    && prepend avfilter_deps "swscale"
7223 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
7224 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
7225 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
7226 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
7227 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
7228 enabled signature_filter    && prepend avfilter_deps "avcodec avformat"
7229 enabled smartblur_filter    && prepend avfilter_deps "swscale"
7230 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
7231 enabled spp_filter          && prepend avfilter_deps "avcodec"
7232 enabled sr_filter           && prepend avfilter_deps "avformat swscale"
7233 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
7234 enabled uspp_filter         && prepend avfilter_deps "avcodec"
7235 enabled zoompan_filter      && prepend avfilter_deps "swscale"
7236
7237 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
7238
7239 #FIXME
7240 enabled_any sdl2_outdev opengl_outdev && enabled sdl2 &&
7241     add_cflags $(filter_out '-Dmain=SDL_main' $sdl2_cflags)
7242
7243 enabled opus_decoder    && prepend avcodec_deps "swresample"
7244
7245 # reorder the items at var $1 to align with the items order at var $2 .
7246 # die if an item at $1 is not at $2 .
7247 reorder_by(){
7248     eval rb_in=\$$1
7249     eval rb_ordered=\$$2
7250
7251     for rb in $rb_in; do
7252         is_in $rb $rb_ordered || die "$rb at \$$1 is not at \$$2"
7253     done
7254
7255     rb_out=
7256     for rb in $rb_ordered; do
7257         is_in $rb $rb_in && rb_out="$rb_out$rb "
7258     done
7259     eval $1=\$rb_out
7260 }
7261
7262 # deps-expand fflib $1:  N x {append all expanded deps; unique}
7263 # within a set of N items, N expansions are enough to expose a cycle.
7264 expand_deps(){
7265     unique ${1}_deps  # required for the early break test.
7266     for dummy in $LIBRARY_LIST; do  # N iteratios
7267         eval deps=\$${1}_deps
7268         append ${1}_deps $(map 'eval echo \$${v}_deps' $deps)
7269         unique ${1}_deps
7270         eval '[ ${#deps} = ${#'${1}_deps'} ]' && break  # doesn't expand anymore
7271     done
7272
7273     eval is_in $1 \$${1}_deps && die "Dependency cycle at ${1}_deps"
7274     reorder_by ${1}_deps LIBRARY_LIST  # linking order is expected later
7275 }
7276
7277 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
7278 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
7279
7280 map 'expand_deps $v' $LIBRARY_LIST
7281
7282 if test "$quiet" != "yes"; then
7283
7284 echo "install prefix            $prefix"
7285 echo "source path               $source_path"
7286 echo "C compiler                $cc"
7287 echo "C library                 $libc_type"
7288 if test "$host_cc" != "$cc"; then
7289     echo "host C compiler           $host_cc"
7290     echo "host C library            $host_libc_type"
7291 fi
7292 echo "ARCH                      $arch ($cpu)"
7293 if test "$build_suffix" != ""; then
7294     echo "build suffix              $build_suffix"
7295 fi
7296 if test "$progs_suffix" != ""; then
7297     echo "progs suffix              $progs_suffix"
7298 fi
7299 if test "$extra_version" != ""; then
7300     echo "version string suffix     $extra_version"
7301 fi
7302 echo "big-endian                ${bigendian-no}"
7303 echo "runtime cpu detection     ${runtime_cpudetect-no}"
7304 if enabled x86; then
7305     echo "standalone assembly       ${x86asm-no}"
7306     echo "x86 assembler             ${x86asmexe}"
7307     echo "MMX enabled               ${mmx-no}"
7308     echo "MMXEXT enabled            ${mmxext-no}"
7309     echo "3DNow! enabled            ${amd3dnow-no}"
7310     echo "3DNow! extended enabled   ${amd3dnowext-no}"
7311     echo "SSE enabled               ${sse-no}"
7312     echo "SSSE3 enabled             ${ssse3-no}"
7313     echo "AESNI enabled             ${aesni-no}"
7314     echo "AVX enabled               ${avx-no}"
7315     echo "AVX2 enabled              ${avx2-no}"
7316     echo "AVX-512 enabled           ${avx512-no}"
7317     echo "XOP enabled               ${xop-no}"
7318     echo "FMA3 enabled              ${fma3-no}"
7319     echo "FMA4 enabled              ${fma4-no}"
7320     echo "i686 features enabled     ${i686-no}"
7321     echo "CMOV is fast              ${fast_cmov-no}"
7322     echo "EBX available             ${ebx_available-no}"
7323     echo "EBP available             ${ebp_available-no}"
7324 fi
7325 if enabled aarch64; then
7326     echo "NEON enabled              ${neon-no}"
7327     echo "VFP enabled               ${vfp-no}"
7328 fi
7329 if enabled arm; then
7330     echo "ARMv5TE enabled           ${armv5te-no}"
7331     echo "ARMv6 enabled             ${armv6-no}"
7332     echo "ARMv6T2 enabled           ${armv6t2-no}"
7333     echo "VFP enabled               ${vfp-no}"
7334     echo "NEON enabled              ${neon-no}"
7335     echo "THUMB enabled             ${thumb-no}"
7336 fi
7337 if enabled mips; then
7338     echo "MIPS FPU enabled          ${mipsfpu-no}"
7339     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
7340     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
7341     echo "MIPS MSA enabled          ${msa-no}"
7342     echo "MIPS MSA2 enabled         ${msa2-no}"
7343     echo "LOONGSON MMI enabled      ${mmi-no}"
7344 fi
7345 if enabled ppc; then
7346     echo "AltiVec enabled           ${altivec-no}"
7347     echo "VSX enabled               ${vsx-no}"
7348     echo "POWER8 enabled            ${power8-no}"
7349     echo "PPC 4xx optimizations     ${ppc4xx-no}"
7350     echo "dcbzl available           ${dcbzl-no}"
7351 fi
7352 echo "debug symbols             ${debug-no}"
7353 echo "strip symbols             ${stripping-no}"
7354 echo "optimize for size         ${small-no}"
7355 echo "optimizations             ${optimizations-no}"
7356 echo "static                    ${static-no}"
7357 echo "shared                    ${shared-no}"
7358 echo "postprocessing support    ${postproc-no}"
7359 echo "network support           ${network-no}"
7360 echo "threading support         ${thread_type-no}"
7361 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
7362 echo "texi2html enabled         ${texi2html-no}"
7363 echo "perl enabled              ${perl-no}"
7364 echo "pod2man enabled           ${pod2man-no}"
7365 echo "makeinfo enabled          ${makeinfo-no}"
7366 echo "makeinfo supports HTML    ${makeinfo_html-no}"
7367 test -n "$random_seed" &&
7368     echo "random seed               ${random_seed}"
7369 echo
7370
7371 echo "External libraries:"
7372 print_enabled '' $EXTERNAL_LIBRARY_LIST $EXTERNAL_AUTODETECT_LIBRARY_LIST | print_in_columns
7373 echo
7374
7375 echo "External libraries providing hardware acceleration:"
7376 print_enabled '' $HWACCEL_LIBRARY_LIST $HWACCEL_AUTODETECT_LIBRARY_LIST | print_in_columns
7377 echo
7378
7379 echo "Libraries:"
7380 print_enabled '' $LIBRARY_LIST | print_in_columns
7381 echo
7382
7383 echo "Programs:"
7384 print_enabled '' $PROGRAM_LIST | print_in_columns
7385 echo
7386
7387 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
7388     echo "Enabled ${type}s:"
7389     eval list=\$$(toupper $type)_LIST
7390     print_enabled '_*' $list | print_in_columns
7391     echo
7392 done
7393
7394 if test -n "$ignore_tests"; then
7395     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
7396     echo "Ignored FATE tests:"
7397     echo $ignore_tests | print_in_columns
7398     echo
7399 fi
7400
7401 echo "License: $license"
7402
7403 fi # test "$quiet" != "yes"
7404
7405 if test -n "$WARN_IF_GETS_DISABLED_LIST"; then
7406     for cfg in $WARN_IF_GETS_DISABLED_LIST; do
7407         if disabled $cfg; then
7408             varname=${cfg}_disable_reason
7409             eval "warn \"Disabled $cfg because \$$varname\""
7410         fi
7411     done
7412 fi
7413
7414 if test -n "$WARNINGS"; then
7415     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
7416     enabled fatal_warnings && exit 1
7417 fi
7418
7419 test -e Makefile || echo "include $source_path/Makefile" > Makefile
7420
7421 esc(){
7422     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
7423 }
7424
7425 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" > ffbuild/config.fate
7426
7427 enabled stripping || strip="echo skipping strip"
7428 enabled stripping || striptype=""
7429
7430 config_files="$TMPH ffbuild/config.mak doc/config.texi"
7431
7432 cat > ffbuild/config.mak <<EOF
7433 # Automatically generated by configure - do not modify!
7434 ifndef FFMPEG_CONFIG_MAK
7435 FFMPEG_CONFIG_MAK=1
7436 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
7437 prefix=$prefix
7438 LIBDIR=\$(DESTDIR)$libdir
7439 SHLIBDIR=\$(DESTDIR)$shlibdir
7440 INCDIR=\$(DESTDIR)$incdir
7441 BINDIR=\$(DESTDIR)$bindir
7442 DATADIR=\$(DESTDIR)$datadir
7443 DOCDIR=\$(DESTDIR)$docdir
7444 MANDIR=\$(DESTDIR)$mandir
7445 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
7446 INSTALL_NAME_DIR=$install_name_dir
7447 SRC_PATH=$source_path
7448 SRC_LINK=$source_link
7449 ifndef MAIN_MAKEFILE
7450 SRC_PATH:=\$(SRC_PATH:.%=..%)
7451 endif
7452 CC_IDENT=$cc_ident
7453 ARCH=$arch
7454 INTRINSICS=$intrinsics
7455 EXTERN_PREFIX=$extern_prefix
7456 CC=$cc
7457 CXX=$cxx
7458 AS=$as
7459 OBJCC=$objcc
7460 LD=$ld
7461 DEPCC=$dep_cc
7462 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
7463 DEPAS=$as
7464 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
7465 X86ASM=$x86asmexe
7466 DEPX86ASM=$x86asmexe
7467 DEPX86ASMFLAGS=\$(X86ASMFLAGS)
7468 AR=$ar
7469 ARFLAGS=$arflags
7470 AR_O=$ar_o
7471 AR_CMD=$ar
7472 NM_CMD=$nm
7473 RANLIB=$ranlib
7474 STRIP=$strip
7475 STRIPTYPE=$striptype
7476 NVCC=$nvcc
7477 CP=cp -p
7478 LN_S=$ln_s
7479 CPPFLAGS=$CPPFLAGS
7480 CFLAGS=$CFLAGS
7481 CXXFLAGS=$CXXFLAGS
7482 OBJCFLAGS=$OBJCFLAGS
7483 ASFLAGS=$ASFLAGS
7484 NVCCFLAGS=$nvccflags
7485 AS_C=$AS_C
7486 AS_O=$AS_O
7487 OBJCC_C=$OBJCC_C
7488 OBJCC_E=$OBJCC_E
7489 OBJCC_O=$OBJCC_O
7490 CC_C=$CC_C
7491 CC_E=$CC_E
7492 CC_O=$CC_O
7493 CXX_C=$CXX_C
7494 CXX_O=$CXX_O
7495 NVCC_C=$NVCC_C
7496 NVCC_O=$NVCC_O
7497 LD_O=$LD_O
7498 X86ASM_O=$X86ASM_O
7499 LD_LIB=$LD_LIB
7500 LD_PATH=$LD_PATH
7501 DLLTOOL=$dlltool
7502 WINDRES=$windres
7503 DEPWINDRES=$dep_cc
7504 DOXYGEN=$doxygen
7505 LDFLAGS=$LDFLAGS
7506 LDEXEFLAGS=$LDEXEFLAGS
7507 LDSOFLAGS=$LDSOFLAGS
7508 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
7509 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
7510 X86ASMFLAGS=$X86ASMFLAGS
7511 MSAFLAGS=$MSAFLAGS
7512 MMIFLAGS=$MMIFLAGS
7513 BUILDSUF=$build_suffix
7514 PROGSSUF=$progs_suffix
7515 FULLNAME=$FULLNAME
7516 LIBPREF=$LIBPREF
7517 LIBSUF=$LIBSUF
7518 LIBNAME=$LIBNAME
7519 SLIBPREF=$SLIBPREF
7520 SLIBSUF=$SLIBSUF
7521 EXESUF=$EXESUF
7522 EXTRA_VERSION=$extra_version
7523 CCDEP=$CCDEP
7524 CXXDEP=$CXXDEP
7525 CCDEP_FLAGS=$CCDEP_FLAGS
7526 ASDEP=$ASDEP
7527 ASDEP_FLAGS=$ASDEP_FLAGS
7528 X86ASMDEP=$X86ASMDEP
7529 X86ASMDEP_FLAGS=$X86ASMDEP_FLAGS
7530 CC_DEPFLAGS=$CC_DEPFLAGS
7531 AS_DEPFLAGS=$AS_DEPFLAGS
7532 X86ASM_DEPFLAGS=$X86ASM_DEPFLAGS
7533 HOSTCC=$host_cc
7534 HOSTLD=$host_ld
7535 HOSTCFLAGS=$host_cflags
7536 HOSTCPPFLAGS=$host_cppflags
7537 HOSTEXESUF=$HOSTEXESUF
7538 HOSTLDFLAGS=$host_ldflags
7539 HOSTEXTRALIBS=$host_extralibs
7540 DEPHOSTCC=$host_cc
7541 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
7542 HOSTCCDEP=$HOSTCCDEP
7543 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
7544 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
7545 HOSTCC_C=$HOSTCC_C
7546 HOSTCC_O=$HOSTCC_O
7547 HOSTLD_O=$HOSTLD_O
7548 TARGET_EXEC=$target_exec $target_exec_args
7549 TARGET_PATH=$target_path
7550 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
7551 CFLAGS-ffplay=${sdl2_cflags}
7552 CFLAGS_HEADERS=$CFLAGS_HEADERS
7553 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
7554 EXTRALIBS=$extralibs
7555 COMPAT_OBJS=$compat_objs
7556 INSTALL=$install
7557 LIBTARGET=${LIBTARGET}
7558 SLIBNAME=${SLIBNAME}
7559 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
7560 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
7561 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
7562 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
7563 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
7564 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
7565 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
7566 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
7567 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
7568 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
7569 NOREDZONE_FLAGS=$noredzone_flags
7570 LIBFUZZER_PATH=$libfuzzer_path
7571 IGNORE_TESTS=$ignore_tests
7572 EOF
7573
7574 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> ffbuild/config.mak' $LIBRARY_LIST
7575
7576 for entry in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
7577     eval echo "EXTRALIBS-${entry}=\$${entry}_extralibs" >> ffbuild/config.mak
7578 done
7579
7580 cat > $TMPH <<EOF
7581 /* Automatically generated by configure - do not modify! */
7582 #ifndef FFMPEG_CONFIG_H
7583 #define FFMPEG_CONFIG_H
7584 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
7585 #define FFMPEG_LICENSE "$(c_escape $license)"
7586 #define CONFIG_THIS_YEAR 2021
7587 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
7588 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
7589 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
7590 #define OS_NAME $target_os
7591 #define av_restrict $restrict_keyword
7592 #define EXTERN_PREFIX "${extern_prefix}"
7593 #define EXTERN_ASM ${extern_prefix}
7594 #define BUILDSUF "$build_suffix"
7595 #define SLIBSUF "$SLIBSUF"
7596 #define HAVE_MMX2 HAVE_MMXEXT
7597 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
7598 EOF
7599
7600 test -n "$assert_level" &&
7601     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
7602
7603 test -n "$malloc_prefix" &&
7604     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
7605
7606 if enabled x86asm; then
7607     append config_files $TMPASM
7608     cat > $TMPASM <<EOF
7609 ; Automatically generated by configure - do not modify!
7610 EOF
7611 fi
7612
7613 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
7614
7615
7616 mkdir -p doc
7617 mkdir -p tests
7618 mkdir -p tests/api
7619 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
7620
7621 print_config ARCH_   "$config_files" $ARCH_LIST
7622 print_config HAVE_   "$config_files" $HAVE_LIST
7623 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
7624                                      $CONFIG_EXTRA      \
7625                                      $ALL_COMPONENTS    \
7626
7627 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
7628 echo "endif # FFMPEG_CONFIG_MAK" >> ffbuild/config.mak
7629
7630 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
7631 cp_if_changed $TMPH config.h
7632 touch ffbuild/.config
7633
7634 enabled x86asm && cp_if_changed $TMPASM config.asm
7635
7636 cat > $TMPH <<EOF
7637 /* Generated by ffmpeg configure */
7638 #ifndef AVUTIL_AVCONFIG_H
7639 #define AVUTIL_AVCONFIG_H
7640 EOF
7641
7642 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
7643
7644 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
7645
7646 cp_if_changed $TMPH libavutil/avconfig.h
7647
7648 # full_filter_name_foo=vf_foo
7649 # full_filter_name_bar=asrc_bar
7650 # ...
7651 eval "$(sed -n "s/^extern AVFilter ff_\([avfsinkrc]\{2,5\}\)_\(.*\);/full_filter_name_\2=\1_\2/p" $source_path/libavfilter/allfilters.c)"
7652
7653 # generate the lists of enabled components
7654 print_enabled_components(){
7655     file=$1
7656     struct_name=$2
7657     name=$3
7658     shift 3
7659     echo "static const $struct_name * const $name[] = {" > $TMPH
7660     for c in $*; do
7661         if enabled $c; then
7662             case $name in
7663                 filter_list)
7664                     eval c=\$full_filter_name_${c%_filter}
7665                 ;;
7666                 indev_list)
7667                     c=${c%_indev}_demuxer
7668                 ;;
7669                 outdev_list)
7670                     c=${c%_outdev}_muxer
7671                 ;;
7672             esac
7673             printf "    &ff_%s,\n" $c >> $TMPH
7674         fi
7675     done
7676     if [ "$name" = "filter_list" ]; then
7677         for c in asrc_abuffer vsrc_buffer asink_abuffer vsink_buffer; do
7678             printf "    &ff_%s,\n" $c >> $TMPH
7679         done
7680     fi
7681     echo "    NULL };" >> $TMPH
7682     cp_if_changed $TMPH $file
7683 }
7684
7685 print_enabled_components libavfilter/filter_list.c AVFilter filter_list $FILTER_LIST
7686 print_enabled_components libavcodec/codec_list.c AVCodec codec_list $CODEC_LIST
7687 print_enabled_components libavcodec/parser_list.c AVCodecParser parser_list $PARSER_LIST
7688 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
7689 print_enabled_components libavformat/demuxer_list.c AVInputFormat demuxer_list $DEMUXER_LIST
7690 print_enabled_components libavformat/muxer_list.c AVOutputFormat muxer_list $MUXER_LIST
7691 print_enabled_components libavdevice/indev_list.c AVInputFormat indev_list $INDEV_LIST
7692 print_enabled_components libavdevice/outdev_list.c AVOutputFormat outdev_list $OUTDEV_LIST
7693 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
7694
7695 # Settings for pkg-config files
7696
7697 cat > $TMPH <<EOF
7698 # Automatically generated by configure - do not modify!
7699 shared=$shared
7700 build_suffix=$build_suffix
7701 prefix=$prefix
7702 libdir=$libdir
7703 incdir=$incdir
7704 rpath=$(enabled rpath && echo "-Wl,-rpath,\${libdir}")
7705 source_path=${source_path}
7706 LIBPREF=${LIBPREF}
7707 LIBSUF=${LIBSUF}
7708 extralibs_avutil="$avutil_extralibs"
7709 extralibs_avcodec="$avcodec_extralibs"
7710 extralibs_avformat="$avformat_extralibs"
7711 extralibs_avdevice="$avdevice_extralibs"
7712 extralibs_avfilter="$avfilter_extralibs"
7713 extralibs_avresample="$avresample_extralibs"
7714 extralibs_postproc="$postproc_extralibs"
7715 extralibs_swscale="$swscale_extralibs"
7716 extralibs_swresample="$swresample_extralibs"
7717 EOF
7718
7719 for lib in $LIBRARY_LIST; do
7720     lib_deps="$(eval echo \$${lib}_deps)"
7721     echo ${lib}_deps=\"$lib_deps\" >> $TMPH
7722 done
7723
7724 cp_if_changed $TMPH ffbuild/config.sh