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
3068 aac_mf_encoder_deps="mediafoundation"
3069 ac3_mf_encoder_deps="mediafoundation"
3070 av1_cuvid_decoder_deps="cuvid CUVIDAV1PICPARAMS"
3071 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
3072 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
3073 h264_amf_encoder_deps="amf"
3074 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
3075 h264_cuvid_decoder_deps="cuvid"
3076 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
3077 h264_mediacodec_decoder_deps="mediacodec"
3078 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
3079 h264_mf_encoder_deps="mediafoundation"
3080 h264_mmal_decoder_deps="mmal"
3081 h264_nvenc_encoder_deps="nvenc"
3082 h264_nvenc_encoder_select="atsc_a53"
3083 h264_omx_encoder_deps="omx"
3084 h264_qsv_decoder_select="h264_mp4toannexb_bsf qsvdec"
3085 h264_qsv_encoder_select="atsc_a53 qsvenc"
3086 h264_rkmpp_decoder_deps="rkmpp"
3087 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
3088 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
3089 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
3090 h264_v4l2m2m_decoder_select="h264_mp4toannexb_bsf"
3091 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
3092 hevc_amf_encoder_deps="amf"
3093 hevc_cuvid_decoder_deps="cuvid"
3094 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
3095 hevc_mediacodec_decoder_deps="mediacodec"
3096 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
3097 hevc_mf_encoder_deps="mediafoundation"
3098 hevc_nvenc_encoder_deps="nvenc"
3099 hevc_nvenc_encoder_select="atsc_a53"
3100 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf qsvdec"
3101 hevc_qsv_encoder_select="hevcparse qsvenc"
3102 hevc_rkmpp_decoder_deps="rkmpp"
3103 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
3104 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
3105 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
3106 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
3107 hevc_v4l2m2m_decoder_select="hevc_mp4toannexb_bsf"
3108 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
3109 mjpeg_cuvid_decoder_deps="cuvid"
3110 mjpeg_qsv_decoder_select="qsvdec"
3111 mjpeg_qsv_encoder_deps="libmfx"
3112 mjpeg_qsv_encoder_select="qsvenc"
3113 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
3114 mjpeg_vaapi_encoder_select="cbs_jpeg jpegtables vaapi_encode"
3115 mp3_mf_encoder_deps="mediafoundation"
3116 mpeg1_cuvid_decoder_deps="cuvid"
3117 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
3118 mpeg2_crystalhd_decoder_select="crystalhd"
3119 mpeg2_cuvid_decoder_deps="cuvid"
3120 mpeg2_mmal_decoder_deps="mmal"
3121 mpeg2_mediacodec_decoder_deps="mediacodec"
3122 mpeg2_qsv_decoder_select="qsvdec"
3123 mpeg2_qsv_encoder_select="qsvenc"
3124 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
3125 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
3126 mpeg4_crystalhd_decoder_select="crystalhd"
3127 mpeg4_cuvid_decoder_deps="cuvid"
3128 mpeg4_mediacodec_decoder_deps="mediacodec"
3129 mpeg4_mmal_decoder_deps="mmal"
3130 mpeg4_omx_encoder_deps="omx"
3131 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
3132 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
3133 msmpeg4_crystalhd_decoder_select="crystalhd"
3134 vc1_crystalhd_decoder_select="crystalhd"
3135 vc1_cuvid_decoder_deps="cuvid"
3136 vc1_mmal_decoder_deps="mmal"
3137 vc1_qsv_decoder_select="qsvdec"
3138 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
3139 vp8_cuvid_decoder_deps="cuvid"
3140 vp8_mediacodec_decoder_deps="mediacodec"
3141 vp8_qsv_decoder_select="qsvdec"
3142 vp8_rkmpp_decoder_deps="rkmpp"
3143 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
3144 vp8_vaapi_encoder_select="vaapi_encode"
3145 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
3146 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
3147 vp9_cuvid_decoder_deps="cuvid"
3148 vp9_mediacodec_decoder_deps="mediacodec"
3149 vp9_qsv_decoder_select="qsvdec"
3150 vp9_rkmpp_decoder_deps="rkmpp"
3151 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
3152 vp9_vaapi_encoder_select="vaapi_encode"
3153 vp9_qsv_encoder_deps="libmfx MFX_CODEC_VP9"
3154 vp9_qsv_encoder_select="qsvenc"
3155 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
3156 wmv3_crystalhd_decoder_select="crystalhd"
3157 av1_qsv_decoder_select="qsvdec"
3158
3159 # parsers
3160 aac_parser_select="adts_header"
3161 av1_parser_select="cbs_av1"
3162 h264_parser_select="atsc_a53 golomb h264dsp h264parse"
3163 hevc_parser_select="hevcparse"
3164 mpegaudio_parser_select="mpegaudioheader"
3165 mpegvideo_parser_select="mpegvideo"
3166 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
3167 vc1_parser_select="vc1dsp"
3168
3169 # bitstream_filters
3170 aac_adtstoasc_bsf_select="adts_header"
3171 av1_frame_merge_bsf_select="cbs_av1"
3172 av1_frame_split_bsf_select="cbs_av1"
3173 av1_metadata_bsf_select="cbs_av1"
3174 eac3_core_bsf_select="ac3_parser"
3175 filter_units_bsf_select="cbs"
3176 h264_metadata_bsf_deps="const_nan"
3177 h264_metadata_bsf_select="cbs_h264"
3178 h264_redundant_pps_bsf_select="cbs_h264"
3179 hevc_metadata_bsf_select="cbs_h265"
3180 mjpeg2jpeg_bsf_select="jpegtables"
3181 mpeg2_metadata_bsf_select="cbs_mpeg2"
3182 trace_headers_bsf_select="cbs"
3183 vp9_metadata_bsf_select="cbs_vp9"
3184
3185 # external libraries
3186 aac_at_decoder_deps="audiotoolbox"
3187 aac_at_decoder_select="aac_adtstoasc_bsf"
3188 ac3_at_decoder_deps="audiotoolbox"
3189 ac3_at_decoder_select="ac3_parser"
3190 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
3191 alac_at_decoder_deps="audiotoolbox"
3192 amr_nb_at_decoder_deps="audiotoolbox"
3193 avisynth_deps_any="libdl LoadLibrary"
3194 avisynth_demuxer_deps="avisynth"
3195 avisynth_demuxer_select="riffdec"
3196 eac3_at_decoder_deps="audiotoolbox"
3197 eac3_at_decoder_select="ac3_parser"
3198 gsm_ms_at_decoder_deps="audiotoolbox"
3199 ilbc_at_decoder_deps="audiotoolbox"
3200 mp1_at_decoder_deps="audiotoolbox"
3201 mp2_at_decoder_deps="audiotoolbox"
3202 mp3_at_decoder_deps="audiotoolbox"
3203 mp1_at_decoder_select="mpegaudioheader"
3204 mp2_at_decoder_select="mpegaudioheader"
3205 mp3_at_decoder_select="mpegaudioheader"
3206 pcm_alaw_at_decoder_deps="audiotoolbox"
3207 pcm_mulaw_at_decoder_deps="audiotoolbox"
3208 qdmc_decoder_select="fft"
3209 qdmc_at_decoder_deps="audiotoolbox"
3210 qdm2_at_decoder_deps="audiotoolbox"
3211 aac_at_encoder_deps="audiotoolbox"
3212 aac_at_encoder_select="audio_frame_queue"
3213 alac_at_encoder_deps="audiotoolbox"
3214 alac_at_encoder_select="audio_frame_queue"
3215 ilbc_at_encoder_deps="audiotoolbox"
3216 ilbc_at_encoder_select="audio_frame_queue"
3217 pcm_alaw_at_encoder_deps="audiotoolbox"
3218 pcm_alaw_at_encoder_select="audio_frame_queue"
3219 pcm_mulaw_at_encoder_deps="audiotoolbox"
3220 pcm_mulaw_at_encoder_select="audio_frame_queue"
3221 chromaprint_muxer_deps="chromaprint"
3222 h264_videotoolbox_encoder_deps="pthreads"
3223 h264_videotoolbox_encoder_select="atsc_a53 videotoolbox_encoder"
3224 hevc_videotoolbox_encoder_deps="pthreads"
3225 hevc_videotoolbox_encoder_select="atsc_a53 videotoolbox_encoder"
3226 libaom_av1_decoder_deps="libaom"
3227 libaom_av1_encoder_deps="libaom"
3228 libaom_av1_encoder_select="extract_extradata_bsf"
3229 libaribb24_decoder_deps="libaribb24"
3230 libcelt_decoder_deps="libcelt"
3231 libcodec2_decoder_deps="libcodec2"
3232 libcodec2_encoder_deps="libcodec2"
3233 libdav1d_decoder_deps="libdav1d"
3234 libdav1d_decoder_select="atsc_a53"
3235 libdavs2_decoder_deps="libdavs2"
3236 libfdk_aac_decoder_deps="libfdk_aac"
3237 libfdk_aac_encoder_deps="libfdk_aac"
3238 libfdk_aac_encoder_select="audio_frame_queue"
3239 libgme_demuxer_deps="libgme"
3240 libgsm_decoder_deps="libgsm"
3241 libgsm_encoder_deps="libgsm"
3242 libgsm_ms_decoder_deps="libgsm"
3243 libgsm_ms_encoder_deps="libgsm"
3244 libilbc_decoder_deps="libilbc"
3245 libilbc_encoder_deps="libilbc"
3246 libkvazaar_encoder_deps="libkvazaar"
3247 libmodplug_demuxer_deps="libmodplug"
3248 libmp3lame_encoder_deps="libmp3lame"
3249 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
3250 libopencore_amrnb_decoder_deps="libopencore_amrnb"
3251 libopencore_amrnb_encoder_deps="libopencore_amrnb"
3252 libopencore_amrnb_encoder_select="audio_frame_queue"
3253 libopencore_amrwb_decoder_deps="libopencore_amrwb"
3254 libopenh264_decoder_deps="libopenh264"
3255 libopenh264_decoder_select="h264_mp4toannexb_bsf"
3256 libopenh264_encoder_deps="libopenh264"
3257 libopenjpeg_decoder_deps="libopenjpeg"
3258 libopenjpeg_encoder_deps="libopenjpeg"
3259 libopenmpt_demuxer_deps="libopenmpt"
3260 libopus_decoder_deps="libopus"
3261 libopus_encoder_deps="libopus"
3262 libopus_encoder_select="audio_frame_queue"
3263 librav1e_encoder_deps="librav1e"
3264 librav1e_encoder_select="extract_extradata_bsf"
3265 librsvg_decoder_deps="librsvg"
3266 libshine_encoder_deps="libshine"
3267 libshine_encoder_select="audio_frame_queue"
3268 libspeex_decoder_deps="libspeex"
3269 libspeex_encoder_deps="libspeex"
3270 libspeex_encoder_select="audio_frame_queue"
3271 libsvtav1_encoder_deps="libsvtav1"
3272 libtheora_encoder_deps="libtheora"
3273 libtwolame_encoder_deps="libtwolame"
3274 libuavs3d_decoder_deps="libuavs3d"
3275 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
3276 libvorbis_decoder_deps="libvorbis"
3277 libvorbis_encoder_deps="libvorbis libvorbisenc"
3278 libvorbis_encoder_select="audio_frame_queue"
3279 libvpx_vp8_decoder_deps="libvpx"
3280 libvpx_vp8_encoder_deps="libvpx"
3281 libvpx_vp9_decoder_deps="libvpx"
3282 libvpx_vp9_encoder_deps="libvpx"
3283 libwebp_encoder_deps="libwebp"
3284 libwebp_anim_encoder_deps="libwebp"
3285 libx262_encoder_deps="libx262"
3286 libx264_encoder_deps="libx264"
3287 libx264_encoder_select="atsc_a53"
3288 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
3289 libx264rgb_encoder_select="libx264_encoder"
3290 libx265_encoder_deps="libx265"
3291 libxavs_encoder_deps="libxavs"
3292 libxavs2_encoder_deps="libxavs2"
3293 libxvid_encoder_deps="libxvid"
3294 libzvbi_teletext_decoder_deps="libzvbi"
3295 vapoursynth_demuxer_deps="vapoursynth"
3296 videotoolbox_suggest="coreservices"
3297 videotoolbox_deps="corefoundation coremedia corevideo"
3298 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
3299
3300 # demuxers / muxers
3301 ac3_demuxer_select="ac3_parser"
3302 act_demuxer_select="riffdec"
3303 aiff_muxer_select="iso_media"
3304 asf_demuxer_select="riffdec"
3305 asf_o_demuxer_select="riffdec"
3306 asf_muxer_select="riffenc"
3307 asf_stream_muxer_select="asf_muxer"
3308 av1_demuxer_select="av1_frame_merge_bsf av1_parser"
3309 avi_demuxer_select="riffdec exif"
3310 avi_muxer_select="riffenc"
3311 caf_demuxer_select="iso_media"
3312 caf_muxer_select="iso_media"
3313 dash_muxer_select="mp4_muxer"
3314 dash_demuxer_deps="libxml2"
3315 dirac_demuxer_select="dirac_parser"
3316 dts_demuxer_select="dca_parser"
3317 dtshd_demuxer_select="dca_parser"
3318 dv_demuxer_select="dvprofile"
3319 dv_muxer_select="dvprofile"
3320 dxa_demuxer_select="riffdec"
3321 eac3_demuxer_select="ac3_parser"
3322 f4v_muxer_select="mov_muxer"
3323 fifo_muxer_deps="threads"
3324 flac_demuxer_select="flac_parser"
3325 flv_muxer_select="aac_adtstoasc_bsf"
3326 gxf_muxer_select="pcm_rechunk_bsf"
3327 hds_muxer_select="flv_muxer"
3328 hls_muxer_select="mpegts_muxer"
3329 hls_muxer_suggest="gcrypt openssl"
3330 image2_alias_pix_demuxer_select="image2_demuxer"
3331 image2_brender_pix_demuxer_select="image2_demuxer"
3332 ipod_muxer_select="mov_muxer"
3333 ismv_muxer_select="mov_muxer"
3334 ivf_muxer_select="av1_metadata_bsf vp9_superframe_bsf"
3335 latm_muxer_select="aac_adtstoasc_bsf"
3336 matroska_audio_muxer_select="matroska_muxer"
3337 matroska_demuxer_select="riffdec"
3338 matroska_demuxer_suggest="bzlib lzo zlib"
3339 matroska_muxer_select="riffenc vp9_superframe_bsf aac_adtstoasc_bsf"
3340 mlp_demuxer_select="mlp_parser"
3341 mmf_muxer_select="riffenc"
3342 mov_demuxer_select="iso_media riffdec"
3343 mov_demuxer_suggest="zlib"
3344 mov_muxer_select="iso_media riffenc rtpenc_chain vp9_superframe_bsf aac_adtstoasc_bsf"
3345 mp3_demuxer_select="mpegaudio_parser"
3346 mp3_muxer_select="mpegaudioheader"
3347 mp4_muxer_select="mov_muxer"
3348 mpegts_demuxer_select="iso_media"
3349 mpegts_muxer_select="ac3_parser adts_muxer latm_muxer h264_mp4toannexb_bsf hevc_mp4toannexb_bsf"
3350 mpegtsraw_demuxer_select="mpegts_demuxer"
3351 mxf_muxer_select="golomb pcm_rechunk_bsf"
3352 mxf_d10_muxer_select="mxf_muxer"
3353 mxf_opatom_muxer_select="mxf_muxer"
3354 nut_muxer_select="riffenc"
3355 nuv_demuxer_select="riffdec"
3356 obu_demuxer_select="av1_frame_merge_bsf av1_parser"
3357 oga_muxer_select="ogg_muxer"
3358 ogg_demuxer_select="dirac_parse"
3359 ogv_muxer_select="ogg_muxer"
3360 opus_muxer_select="ogg_muxer"
3361 psp_muxer_select="mov_muxer"
3362 rtp_demuxer_select="sdp_demuxer"
3363 rtp_muxer_select="golomb jpegtables"
3364 rtp_mpegts_muxer_select="mpegts_muxer rtp_muxer"
3365 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3366 rtsp_demuxer_select="http_protocol rtpdec"
3367 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3368 sap_demuxer_select="sdp_demuxer"
3369 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3370 sdp_demuxer_select="rtpdec"
3371 smoothstreaming_muxer_select="ismv_muxer"
3372 spdif_demuxer_select="adts_header"
3373 spdif_muxer_select="adts_header"
3374 spx_muxer_select="ogg_muxer"
3375 swf_demuxer_suggest="zlib"
3376 tak_demuxer_select="tak_parser"
3377 truehd_demuxer_select="mlp_parser"
3378 tg2_muxer_select="mov_muxer"
3379 tgp_muxer_select="mov_muxer"
3380 vobsub_demuxer_select="mpegps_demuxer"
3381 w64_demuxer_select="wav_demuxer"
3382 w64_muxer_select="wav_muxer"
3383 wav_demuxer_select="riffdec"
3384 wav_muxer_select="riffenc"
3385 webm_chunk_muxer_select="webm_muxer"
3386 webm_muxer_select="riffenc"
3387 webm_dash_manifest_demuxer_select="matroska_demuxer"
3388 wtv_demuxer_select="mpegts_demuxer riffdec"
3389 wtv_muxer_select="mpegts_muxer riffenc"
3390 xmv_demuxer_select="riffdec"
3391 xwma_demuxer_select="riffdec"
3392
3393 # indevs / outdevs
3394 android_camera_indev_deps="android camera2ndk mediandk pthreads"
3395 android_camera_indev_extralibs="-landroid -lcamera2ndk -lmediandk"
3396 alsa_indev_deps="alsa"
3397 alsa_outdev_deps="alsa"
3398 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3399 avfoundation_indev_suggest="coregraphics applicationservices"
3400 avfoundation_indev_extralibs="-framework Foundation"
3401 audiotoolbox_outdev_deps="audiotoolbox pthreads"
3402 audiotoolbox_outdev_extralibs="-framework AudioToolbox -framework CoreAudio"
3403 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3404 caca_outdev_deps="libcaca"
3405 decklink_deps_any="libdl LoadLibrary"
3406 decklink_indev_deps="decklink threads"
3407 decklink_indev_extralibs="-lstdc++"
3408 decklink_outdev_deps="decklink threads"
3409 decklink_outdev_suggest="libklvanc"
3410 decklink_outdev_extralibs="-lstdc++"
3411 dshow_indev_deps="IBaseFilter"
3412 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3413 fbdev_indev_deps="linux_fb_h"
3414 fbdev_outdev_deps="linux_fb_h"
3415 gdigrab_indev_deps="CreateDIBSection"
3416 gdigrab_indev_extralibs="-lgdi32"
3417 gdigrab_indev_select="bmp_decoder"
3418 iec61883_indev_deps="libiec61883"
3419 jack_indev_deps="libjack"
3420 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3421 kmsgrab_indev_deps="libdrm"
3422 lavfi_indev_deps="avfilter"
3423 libcdio_indev_deps="libcdio"
3424 libdc1394_indev_deps="libdc1394"
3425 openal_indev_deps="openal"
3426 opengl_outdev_deps="opengl"
3427 opengl_outdev_suggest="sdl2"
3428 oss_indev_deps_any="sys_soundcard_h"
3429 oss_outdev_deps_any="sys_soundcard_h"
3430 pulse_indev_deps="libpulse"
3431 pulse_outdev_deps="libpulse"
3432 sdl2_outdev_deps="sdl2"
3433 sndio_indev_deps="sndio"
3434 sndio_outdev_deps="sndio"
3435 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3436 v4l2_indev_suggest="libv4l2"
3437 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3438 v4l2_outdev_suggest="libv4l2"
3439 vfwcap_indev_deps="vfw32 vfwcap_defines"
3440 xcbgrab_indev_deps="libxcb"
3441 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3442 xv_outdev_deps="xlib"
3443
3444 # protocols
3445 async_protocol_deps="threads"
3446 bluray_protocol_deps="libbluray"
3447 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3448 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl mbedtls"
3449 ffrtmpcrypt_protocol_select="tcp_protocol"
3450 ffrtmphttp_protocol_conflict="librtmp_protocol"
3451 ffrtmphttp_protocol_select="http_protocol"
3452 ftp_protocol_select="tcp_protocol"
3453 gopher_protocol_select="tcp_protocol"
3454 gophers_protocol_select="tls_protocol"
3455 http_protocol_select="tcp_protocol"
3456 http_protocol_suggest="zlib"
3457 httpproxy_protocol_select="tcp_protocol"
3458 httpproxy_protocol_suggest="zlib"
3459 https_protocol_select="tls_protocol"
3460 https_protocol_suggest="zlib"
3461 icecast_protocol_select="http_protocol"
3462 mmsh_protocol_select="http_protocol"
3463 mmst_protocol_select="network"
3464 rtmp_protocol_conflict="librtmp_protocol"
3465 rtmp_protocol_select="tcp_protocol"
3466 rtmp_protocol_suggest="zlib"
3467 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3468 rtmpe_protocol_suggest="zlib"
3469 rtmps_protocol_conflict="librtmp_protocol"
3470 rtmps_protocol_select="tls_protocol"
3471 rtmps_protocol_suggest="zlib"
3472 rtmpt_protocol_select="ffrtmphttp_protocol"
3473 rtmpt_protocol_suggest="zlib"
3474 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3475 rtmpte_protocol_suggest="zlib"
3476 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3477 rtmpts_protocol_suggest="zlib"
3478 rtp_protocol_select="udp_protocol"
3479 schannel_conflict="openssl gnutls libtls mbedtls"
3480 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3481 sctp_protocol_select="network"
3482 securetransport_conflict="openssl gnutls libtls mbedtls"
3483 srtp_protocol_select="rtp_protocol srtp"
3484 tcp_protocol_select="network"
3485 tls_protocol_deps_any="gnutls openssl schannel securetransport libtls mbedtls"
3486 tls_protocol_select="tcp_protocol"
3487 udp_protocol_select="network"
3488 udplite_protocol_select="network"
3489 unix_protocol_deps="sys_un_h"
3490 unix_protocol_select="network"
3491
3492 # external library protocols
3493 libamqp_protocol_deps="librabbitmq"
3494 libamqp_protocol_select="network"
3495 librist_protocol_deps="librist"
3496 librist_protocol_select="network"
3497 librtmp_protocol_deps="librtmp"
3498 librtmpe_protocol_deps="librtmp"
3499 librtmps_protocol_deps="librtmp"
3500 librtmpt_protocol_deps="librtmp"
3501 librtmpte_protocol_deps="librtmp"
3502 libsmbclient_protocol_deps="libsmbclient gplv3"
3503 libsrt_protocol_deps="libsrt"
3504 libsrt_protocol_select="network"
3505 libssh_protocol_deps="libssh"
3506 libtls_conflict="openssl gnutls mbedtls"
3507 libzmq_protocol_deps="libzmq"
3508 libzmq_protocol_select="network"
3509
3510 # filters
3511 afftdn_filter_deps="avcodec"
3512 afftdn_filter_select="fft"
3513 afftfilt_filter_deps="avcodec"
3514 afftfilt_filter_select="fft"
3515 afir_filter_deps="avcodec"
3516 afir_filter_select="rdft"
3517 amovie_filter_deps="avcodec avformat"
3518 aresample_filter_deps="swresample"
3519 asoftclip_filter_deps="swresample"
3520 asr_filter_deps="pocketsphinx"
3521 ass_filter_deps="libass"
3522 atempo_filter_deps="avcodec"
3523 atempo_filter_select="rdft"
3524 avgblur_opencl_filter_deps="opencl"
3525 avgblur_vulkan_filter_deps="vulkan libglslang"
3526 azmq_filter_deps="libzmq"
3527 blackframe_filter_deps="gpl"
3528 bm3d_filter_deps="avcodec"
3529 bm3d_filter_select="dct"
3530 boxblur_filter_deps="gpl"
3531 boxblur_opencl_filter_deps="opencl gpl"
3532 bs2b_filter_deps="libbs2b"
3533 chromaber_vulkan_filter_deps="vulkan libglslang"
3534 colorkey_opencl_filter_deps="opencl"
3535 colormatrix_filter_deps="gpl"
3536 convolution_opencl_filter_deps="opencl"
3537 convolve_filter_deps="avcodec"
3538 convolve_filter_select="fft"
3539 coreimage_filter_deps="coreimage appkit"
3540 coreimage_filter_extralibs="-framework OpenGL"
3541 coreimagesrc_filter_deps="coreimage appkit"
3542 coreimagesrc_filter_extralibs="-framework OpenGL"
3543 cover_rect_filter_deps="avcodec avformat gpl"
3544 cropdetect_filter_deps="gpl"
3545 deconvolve_filter_deps="avcodec"
3546 deconvolve_filter_select="fft"
3547 deinterlace_qsv_filter_deps="libmfx"
3548 deinterlace_vaapi_filter_deps="vaapi"
3549 delogo_filter_deps="gpl"
3550 denoise_vaapi_filter_deps="vaapi"
3551 derain_filter_select="dnn"
3552 deshake_filter_select="pixelutils"
3553 deshake_opencl_filter_deps="opencl"
3554 dilation_opencl_filter_deps="opencl"
3555 dnn_detect_filter_select="dnn"
3556 dnn_processing_filter_select="dnn"
3557 drawtext_filter_deps="libfreetype"
3558 drawtext_filter_suggest="libfontconfig libfribidi"
3559 elbg_filter_deps="avcodec"
3560 eq_filter_deps="gpl"
3561 erosion_opencl_filter_deps="opencl"
3562 fftfilt_filter_deps="avcodec"
3563 fftfilt_filter_select="rdft"
3564 fftdnoiz_filter_deps="avcodec"
3565 fftdnoiz_filter_select="fft"
3566 find_rect_filter_deps="avcodec avformat gpl"
3567 firequalizer_filter_deps="avcodec"
3568 firequalizer_filter_select="rdft"
3569 flite_filter_deps="libflite"
3570 framerate_filter_select="scene_sad"
3571 freezedetect_filter_select="scene_sad"
3572 frei0r_filter_deps="frei0r libdl"
3573 frei0r_src_filter_deps="frei0r libdl"
3574 fspp_filter_deps="gpl"
3575 headphone_filter_select="fft"
3576 histeq_filter_deps="gpl"
3577 hqdn3d_filter_deps="gpl"
3578 interlace_filter_deps="gpl"
3579 kerndeint_filter_deps="gpl"
3580 ladspa_filter_deps="ladspa libdl"
3581 lensfun_filter_deps="liblensfun version3"
3582 lv2_filter_deps="lv2"
3583 mcdeint_filter_deps="avcodec gpl"
3584 movie_filter_deps="avcodec avformat"
3585 mpdecimate_filter_deps="gpl"
3586 mpdecimate_filter_select="pixelutils"
3587 minterpolate_filter_select="scene_sad"
3588 mptestsrc_filter_deps="gpl"
3589 negate_filter_deps="lut_filter"
3590 nlmeans_opencl_filter_deps="opencl"
3591 nnedi_filter_deps="gpl"
3592 ocr_filter_deps="libtesseract"
3593 ocv_filter_deps="libopencv"
3594 openclsrc_filter_deps="opencl"
3595 overlay_opencl_filter_deps="opencl"
3596 overlay_qsv_filter_deps="libmfx"
3597 overlay_qsv_filter_select="qsvvpp"
3598 overlay_vulkan_filter_deps="vulkan libglslang"
3599 owdenoise_filter_deps="gpl"
3600 pad_opencl_filter_deps="opencl"
3601 pan_filter_deps="swresample"
3602 perspective_filter_deps="gpl"
3603 phase_filter_deps="gpl"
3604 pp7_filter_deps="gpl"
3605 pp_filter_deps="gpl postproc"
3606 prewitt_opencl_filter_deps="opencl"
3607 procamp_vaapi_filter_deps="vaapi"
3608 program_opencl_filter_deps="opencl"
3609 pullup_filter_deps="gpl"
3610 removelogo_filter_deps="avcodec avformat swscale"
3611 repeatfields_filter_deps="gpl"
3612 resample_filter_deps="avresample"
3613 roberts_opencl_filter_deps="opencl"
3614 rubberband_filter_deps="librubberband"
3615 sab_filter_deps="gpl swscale"
3616 scale2ref_filter_deps="swscale"
3617 scale_filter_deps="swscale"
3618 scale_qsv_filter_deps="libmfx"
3619 scdet_filter_select="scene_sad"
3620 select_filter_select="scene_sad"
3621 sharpness_vaapi_filter_deps="vaapi"
3622 showcqt_filter_deps="avcodec avformat swscale"
3623 showcqt_filter_suggest="libfontconfig libfreetype"
3624 showcqt_filter_select="fft"
3625 showfreqs_filter_deps="avcodec"
3626 showfreqs_filter_select="fft"
3627 showspatial_filter_select="fft"
3628 showspectrum_filter_deps="avcodec"
3629 showspectrum_filter_select="fft"
3630 showspectrumpic_filter_deps="avcodec"
3631 showspectrumpic_filter_select="fft"
3632 signature_filter_deps="gpl avcodec avformat"
3633 sinc_filter_select="rdft"
3634 smartblur_filter_deps="gpl swscale"
3635 sobel_opencl_filter_deps="opencl"
3636 sofalizer_filter_deps="libmysofa avcodec"
3637 sofalizer_filter_select="fft"
3638 spectrumsynth_filter_deps="avcodec"
3639 spectrumsynth_filter_select="fft"
3640 spp_filter_deps="gpl avcodec"
3641 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3642 sr_filter_deps="avformat swscale"
3643 sr_filter_select="dnn"
3644 stereo3d_filter_deps="gpl"
3645 subtitles_filter_deps="avformat avcodec libass"
3646 super2xsai_filter_deps="gpl"
3647 pixfmts_super2xsai_test_deps="super2xsai_filter"
3648 superequalizer_filter_select="rdft"
3649 surround_filter_select="rdft"
3650 tinterlace_filter_deps="gpl"
3651 tinterlace_merge_test_deps="tinterlace_filter"
3652 tinterlace_pad_test_deps="tinterlace_filter"
3653 tonemap_filter_deps="const_nan"
3654 tonemap_vaapi_filter_deps="vaapi VAProcFilterParameterBufferHDRToneMapping"
3655 tonemap_opencl_filter_deps="opencl const_nan"
3656 transpose_opencl_filter_deps="opencl"
3657 transpose_vaapi_filter_deps="vaapi VAProcPipelineCaps_rotation_flags"
3658 unsharp_opencl_filter_deps="opencl"
3659 uspp_filter_deps="gpl avcodec"
3660 vaguedenoiser_filter_deps="gpl"
3661 vidstabdetect_filter_deps="libvidstab"
3662 vidstabtransform_filter_deps="libvidstab"
3663 libvmaf_filter_deps="libvmaf pthreads"
3664 zmq_filter_deps="libzmq"
3665 zoompan_filter_deps="swscale"
3666 zscale_filter_deps="libzimg const_nan"
3667 scale_vaapi_filter_deps="vaapi"
3668 scale_vulkan_filter_deps="vulkan libglslang"
3669 vpp_qsv_filter_deps="libmfx"
3670 vpp_qsv_filter_select="qsvvpp"
3671 xfade_opencl_filter_deps="opencl"
3672 yadif_cuda_filter_deps="ffnvcodec"
3673 yadif_cuda_filter_deps_any="cuda_nvcc cuda_llvm"
3674
3675 # examples
3676 avio_list_dir_deps="avformat avutil"
3677 avio_reading_deps="avformat avcodec avutil"
3678 decode_audio_example_deps="avcodec avutil"
3679 decode_video_example_deps="avcodec avutil"
3680 demuxing_decoding_example_deps="avcodec avformat avutil"
3681 encode_audio_example_deps="avcodec avutil"
3682 encode_video_example_deps="avcodec avutil"
3683 extract_mvs_example_deps="avcodec avformat avutil"
3684 filter_audio_example_deps="avfilter avutil"
3685 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3686 filtering_video_example_deps="avfilter avcodec avformat avutil"
3687 http_multiclient_example_deps="avformat avutil fork"
3688 hw_decode_example_deps="avcodec avformat avutil"
3689 metadata_example_deps="avformat avutil"
3690 muxing_example_deps="avcodec avformat avutil swscale"
3691 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3692 remuxing_example_deps="avcodec avformat avutil"
3693 resampling_audio_example_deps="avutil swresample"
3694 scaling_video_example_deps="avutil swscale"
3695 transcode_aac_example_deps="avcodec avformat swresample"
3696 transcoding_example_deps="avfilter avcodec avformat avutil"
3697 vaapi_encode_example_deps="avcodec avutil h264_vaapi_encoder"
3698 vaapi_transcode_example_deps="avcodec avformat avutil h264_vaapi_encoder"
3699
3700 # EXTRALIBS_LIST
3701 cpu_init_extralibs="pthreads_extralibs"
3702 cws2fws_extralibs="zlib_extralibs"
3703
3704 # libraries, in any order
3705 avcodec_deps="avutil"
3706 avcodec_suggest="libm"
3707 avcodec_select="null_bsf"
3708 avdevice_deps="avformat avcodec avutil"
3709 avdevice_suggest="libm"
3710 avfilter_deps="avutil"
3711 avfilter_suggest="libm"
3712 avformat_deps="avcodec avutil"
3713 avformat_suggest="libm network zlib"
3714 avresample_deps="avutil"
3715 avresample_suggest="libm"
3716 avutil_suggest="clock_gettime ffnvcodec libm libdrm libmfx opencl user32 vaapi vulkan videotoolbox corefoundation corevideo coremedia bcrypt"
3717 postproc_deps="avutil gpl"
3718 postproc_suggest="libm"
3719 swresample_deps="avutil"
3720 swresample_suggest="libm libsoxr"
3721 swscale_deps="avutil"
3722 swscale_suggest="libm"
3723
3724 avcodec_extralibs="pthreads_extralibs iconv_extralibs dxva2_extralibs"
3725 avfilter_extralibs="pthreads_extralibs"
3726 avutil_extralibs="d3d11va_extralibs nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3727
3728 # programs
3729 ffmpeg_deps="avcodec avfilter avformat"
3730 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3731                hflip_filter null_filter
3732                transpose_filter trim_filter vflip_filter"
3733 ffmpeg_suggest="ole32 psapi shell32"
3734 ffplay_deps="avcodec avformat swscale swresample sdl2"
3735 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3736 ffplay_suggest="shell32"
3737 ffprobe_deps="avcodec avformat"
3738 ffprobe_suggest="shell32"
3739
3740 # documentation
3741 podpages_deps="perl"
3742 manpages_deps="perl pod2man"
3743 htmlpages_deps="perl"
3744 htmlpages_deps_any="makeinfo_html texi2html"
3745 txtpages_deps="perl makeinfo"
3746 doc_deps_any="manpages htmlpages podpages txtpages"
3747
3748 # default parameters
3749
3750 logfile="ffbuild/config.log"
3751
3752 # installation paths
3753 prefix_default="/usr/local"
3754 bindir_default='${prefix}/bin'
3755 datadir_default='${prefix}/share/ffmpeg'
3756 docdir_default='${prefix}/share/doc/ffmpeg'
3757 incdir_default='${prefix}/include'
3758 libdir_default='${prefix}/lib'
3759 mandir_default='${prefix}/share/man'
3760
3761 # toolchain
3762 ar_default="ar"
3763 cc_default="gcc"
3764 cxx_default="g++"
3765 host_cc_default="gcc"
3766 doxygen_default="doxygen"
3767 install="install"
3768 ln_s_default="ln -s -f"
3769 nm_default="nm -g"
3770 pkg_config_default=pkg-config
3771 ranlib_default="ranlib"
3772 strip_default="strip"
3773 version_script='--version-script'
3774 objformat="elf32"
3775 x86asmexe_default="nasm"
3776 windres_default="windres"
3777 striptype="direct"
3778
3779 # OS
3780 target_os_default=$(tolower $(uname -s))
3781 host_os=$target_os_default
3782
3783 # machine
3784 if test "$target_os_default" = aix; then
3785     arch_default=$(uname -p)
3786     strip_default="strip -X32_64"
3787     nm_default="nm -g -X32_64"
3788 else
3789     arch_default=$(uname -m)
3790 fi
3791 cpu="generic"
3792 intrinsics="none"
3793
3794 # configurable options
3795 enable $PROGRAM_LIST
3796 enable $DOCUMENT_LIST
3797 enable $EXAMPLE_LIST
3798 enable $(filter_out avresample $LIBRARY_LIST)
3799 enable stripping
3800
3801 enable asm
3802 enable debug
3803 enable doc
3804 enable faan faandct faanidct
3805 enable large_tests
3806 enable optimizations
3807 enable runtime_cpudetect
3808 enable safe_bitstream_reader
3809 enable static
3810 enable swscale_alpha
3811 enable valgrind_backtrace
3812
3813 sws_max_filter_size_default=256
3814 set_default sws_max_filter_size
3815
3816 # internal components are enabled by default
3817 enable $EXTRALIBS_LIST
3818
3819 # Avoid external, non-system, libraries getting enabled by dependency resolution
3820 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3821
3822 # build settings
3823 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3824 LIBPREF="lib"
3825 LIBSUF=".a"
3826 FULLNAME='$(NAME)$(BUILDSUF)'
3827 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3828 SLIBPREF="lib"
3829 SLIBSUF=".so"
3830 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3831 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3832 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3833 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3834 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3835 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3836 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3837
3838 asflags_filter=echo
3839 cflags_filter=echo
3840 ldflags_filter=echo
3841
3842 AS_C='-c'
3843 AS_O='-o $@'
3844 CC_C='-c'
3845 CC_E='-E -o $@'
3846 CC_O='-o $@'
3847 CXX_C='-c'
3848 CXX_O='-o $@'
3849 OBJCC_C='-c'
3850 OBJCC_E='-E -o $@'
3851 OBJCC_O='-o $@'
3852 X86ASM_O='-o $@'
3853 LD_O='-o $@'
3854 LD_LIB='-l%'
3855 LD_PATH='-L'
3856 HOSTCC_C='-c'
3857 HOSTCC_E='-E -o $@'
3858 HOSTCC_O='-o $@'
3859 HOSTLD_O='-o $@'
3860 NVCC_C='-c'
3861 NVCC_O='-o $@'
3862
3863 host_extralibs='-lm'
3864 host_cflags_filter=echo
3865 host_ldflags_filter=echo
3866
3867 target_path='$(CURDIR)'
3868
3869 # since the object filename is not given with the -MM flag, the compiler
3870 # is only able to print the basename, and we must add the path ourselves
3871 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3872 DEPFLAGS='-MM'
3873
3874 mkdir -p ffbuild
3875
3876 # find source path
3877 if test -f configure; then
3878     source_path=.
3879 elif test -f src/configure; then
3880     source_path=src
3881 else
3882     source_path=$(cd $(dirname "$0"); pwd)
3883     case "$source_path" in
3884         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3885     esac
3886     test -e "$source_path/config.h" &&
3887         die "Out of tree builds are impossible with config.h in source dir."
3888 fi
3889
3890 for v in "$@"; do
3891     r=${v#*=}
3892     l=${v%"$r"}
3893     r=$(sh_quote "$r")
3894     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3895 done
3896
3897 find_things_extern(){
3898     thing=$1
3899     pattern=$2
3900     file=$source_path/$3
3901     out=${4:-$thing}
3902     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$out/p" "$file"
3903 }
3904
3905 find_filters_extern(){
3906     file=$source_path/$1
3907     sed -n 's/^extern AVFilter ff_[avfsinkrc]\{2,5\}_\([[:alnum:]_]\{1,\}\);/\1_filter/p' $file
3908 }
3909
3910 FILTER_LIST=$(find_filters_extern libavfilter/allfilters.c)
3911 OUTDEV_LIST=$(find_things_extern muxer AVOutputFormat libavdevice/alldevices.c outdev)
3912 INDEV_LIST=$(find_things_extern demuxer AVInputFormat libavdevice/alldevices.c indev)
3913 MUXER_LIST=$(find_things_extern muxer AVOutputFormat libavformat/allformats.c)
3914 DEMUXER_LIST=$(find_things_extern demuxer AVInputFormat libavformat/allformats.c)
3915 ENCODER_LIST=$(find_things_extern encoder AVCodec libavcodec/allcodecs.c)
3916 DECODER_LIST=$(find_things_extern decoder AVCodec libavcodec/allcodecs.c)
3917 CODEC_LIST="
3918     $ENCODER_LIST
3919     $DECODER_LIST
3920 "
3921 PARSER_LIST=$(find_things_extern parser AVCodecParser libavcodec/parsers.c)
3922 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3923 HWACCEL_LIST=$(find_things_extern hwaccel AVHWAccel libavcodec/hwaccels.h)
3924 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3925
3926 AVCODEC_COMPONENTS_LIST="
3927     $BSF_LIST
3928     $DECODER_LIST
3929     $ENCODER_LIST
3930     $HWACCEL_LIST
3931     $PARSER_LIST
3932 "
3933
3934 AVDEVICE_COMPONENTS_LIST="
3935     $INDEV_LIST
3936     $OUTDEV_LIST
3937 "
3938
3939 AVFILTER_COMPONENTS_LIST="
3940     $FILTER_LIST
3941 "
3942
3943 AVFORMAT_COMPONENTS_LIST="
3944     $DEMUXER_LIST
3945     $MUXER_LIST
3946     $PROTOCOL_LIST
3947 "
3948
3949 ALL_COMPONENTS="
3950     $AVCODEC_COMPONENTS_LIST
3951     $AVDEVICE_COMPONENTS_LIST
3952     $AVFILTER_COMPONENTS_LIST
3953     $AVFORMAT_COMPONENTS_LIST
3954 "
3955
3956 for n in $COMPONENT_LIST; do
3957     v=$(toupper ${n%s})_LIST
3958     eval enable \$$v
3959     eval ${n}_if_any="\$$v"
3960 done
3961
3962 enable $ARCH_EXT_LIST
3963
3964 die_unknown(){
3965     echo "Unknown option \"$1\"."
3966     echo "See $0 --help for available options."
3967     exit 1
3968 }
3969
3970 print_in_columns() {
3971     tr ' ' '\n' | sort | tr '\r\n' '  ' | awk -v col_width=24 -v width="$ncols" '
3972     {
3973         num_cols = width > col_width ? int(width / col_width) : 1;
3974         num_rows = int((NF + num_cols-1) / num_cols);
3975         y = x = 1;
3976         for (y = 1; y <= num_rows; y++) {
3977             i = y;
3978             for (x = 1; x <= num_cols; x++) {
3979                 if (i <= NF) {
3980                   line = sprintf("%s%-" col_width "s", line, $i);
3981                 }
3982                 i = i + num_rows;
3983             }
3984             print line; line = "";
3985         }
3986     }' | sed 's/ *$//'
3987 }
3988
3989 show_list() {
3990     suffix=_$1
3991     shift
3992     echo $* | sed s/$suffix//g | print_in_columns
3993     exit 0
3994 }
3995
3996 rand_list(){
3997     IFS=', '
3998     set -- $*
3999     unset IFS
4000     for thing; do
4001         comp=${thing%:*}
4002         prob=${thing#$comp}
4003         prob=${prob#:}
4004         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
4005         echo "prob ${prob:-0.5}"
4006         printf '%s\n' $comp
4007     done
4008 }
4009
4010 do_random(){
4011     action=$1
4012     shift
4013     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
4014     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
4015 }
4016
4017 for opt do
4018     optval="${opt#*=}"
4019     case "$opt" in
4020         --extra-ldflags=*)
4021             add_ldflags $optval
4022         ;;
4023         --extra-ldexeflags=*)
4024             add_ldexeflags $optval
4025         ;;
4026         --extra-ldsoflags=*)
4027             add_ldsoflags $optval
4028         ;;
4029         --extra-ldlibflags=*)
4030             warn "The --extra-ldlibflags option is only provided for compatibility and will be\n"\
4031                  "removed in the future. Use --extra-ldsoflags instead."
4032             add_ldsoflags $optval
4033         ;;
4034         --extra-libs=*)
4035             add_extralibs $optval
4036         ;;
4037         --disable-devices)
4038             disable $INDEV_LIST $OUTDEV_LIST
4039         ;;
4040         --enable-debug=*)
4041             debuglevel="$optval"
4042         ;;
4043         --disable-programs)
4044             disable $PROGRAM_LIST
4045         ;;
4046         --disable-everything)
4047             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
4048         ;;
4049         --disable-all)
4050             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
4051             disable $LIBRARY_LIST $PROGRAM_LIST doc
4052             enable avutil
4053         ;;
4054         --enable-random|--disable-random)
4055             action=${opt%%-random}
4056             do_random ${action#--} $COMPONENT_LIST
4057         ;;
4058         --enable-random=*|--disable-random=*)
4059             action=${opt%%-random=*}
4060             do_random ${action#--} $optval
4061         ;;
4062         --enable-sdl)
4063             enable sdl2
4064         ;;
4065         --enable-*=*|--disable-*=*)
4066             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
4067             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
4068             eval list=\$$(toupper $thing)_LIST
4069             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
4070             list=$(filter "$name" $list)
4071             [ "$list" = "" ] && warn "Option $opt did not match anything"
4072             test $action = enable && warn_if_gets_disabled $list
4073             $action $list
4074         ;;
4075         --enable-yasm|--disable-yasm)
4076             warn "The ${opt} option is only provided for compatibility and will be\n"\
4077                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
4078             test $opt = --enable-yasm && x86asm=yes || x86asm=no
4079         ;;
4080         --yasmexe=*)
4081             warn "The --yasmexe option is only provided for compatibility and will be\n"\
4082                  "removed in the future. Use --x86asmexe instead."
4083             x86asmexe="$optval"
4084         ;;
4085         --enable-?*|--disable-?*)
4086             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
4087             if is_in $option $COMPONENT_LIST; then
4088                 test $action = disable && action=unset
4089                 eval $action \$$(toupper ${option%s})_LIST
4090             elif is_in $option $CMDLINE_SELECT; then
4091                 $action $option
4092             else
4093                 die_unknown $opt
4094             fi
4095         ;;
4096         --list-*)
4097             NAME="${opt#--list-}"
4098             is_in $NAME $COMPONENT_LIST || die_unknown $opt
4099             NAME=${NAME%s}
4100             eval show_list $NAME \$$(toupper $NAME)_LIST
4101         ;;
4102         --help|-h) show_help
4103         ;;
4104         --quiet|-q) quiet=yes
4105         ;;
4106         --fatal-warnings) enable fatal_warnings
4107         ;;
4108         --libfuzzer=*)
4109             libfuzzer_path="$optval"
4110         ;;
4111         *)
4112             optname="${opt%%=*}"
4113             optname="${optname#--}"
4114             optname=$(echo "$optname" | sed 's/-/_/g')
4115             if is_in $optname $CMDLINE_SET; then
4116                 eval $optname='$optval'
4117             elif is_in $optname $CMDLINE_APPEND; then
4118                 append $optname "$optval"
4119             else
4120                 die_unknown $opt
4121             fi
4122         ;;
4123     esac
4124 done
4125
4126 for e in $env; do
4127     eval "export $e"
4128 done
4129
4130 if disabled autodetect; then
4131
4132     # Unless iconv is explicitely disabled by the user, we still want to probe
4133     # for the iconv from the libc.
4134     disabled iconv || enable libc_iconv
4135
4136     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
4137     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
4138 fi
4139 # Mark specifically enabled, but normally autodetected libraries as requested.
4140 for lib in $AUTODETECT_LIBS; do
4141     enabled $lib && request $lib
4142 done
4143 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
4144 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
4145 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
4146
4147 disabled logging && logfile=/dev/null
4148
4149 # command line configuration sanity checks
4150
4151 # we need to build at least one lib type
4152 if ! enabled_any static shared; then
4153     cat <<EOF
4154 At least one library type must be built.
4155 Specify --enable-static to build the static libraries or --enable-shared to
4156 build the shared libraries as well. To only build the shared libraries specify
4157 --disable-static in addition to --enable-shared.
4158 EOF
4159     exit 1
4160 fi
4161
4162 die_license_disabled() {
4163     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
4164 }
4165
4166 die_license_disabled_gpl() {
4167     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
4168 }
4169
4170 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
4171 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
4172
4173 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
4174 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
4175
4176 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4177
4178 if enabled nonfree; then
4179     license="nonfree and unredistributable"
4180 elif enabled gplv3; then
4181     license="GPL version 3 or later"
4182 elif enabled lgplv3; then
4183     license="LGPL version 3 or later"
4184 elif enabled gpl; then
4185     license="GPL version 2 or later"
4186 else
4187     license="LGPL version 2.1 or later"
4188 fi
4189
4190 enabled_all gnutls openssl &&
4191     die "GnuTLS and OpenSSL must not be enabled at the same time."
4192
4193 enabled_all gnutls mbedtls &&
4194     die "GnuTLS and mbedTLS must not be enabled at the same time."
4195
4196 enabled_all openssl mbedtls &&
4197     die "OpenSSL and mbedTLS must not be enabled at the same time."
4198
4199 # Disable all the library-specific components if the library itself
4200 # is disabled, see AVCODEC_LIST and following _LIST variables.
4201
4202 disable_components(){
4203     disabled ${1} && disable $(
4204         eval components="\$$(toupper ${1})_COMPONENTS"
4205         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
4206     )
4207 }
4208
4209 map 'disable_components $v' $LIBRARY_LIST
4210
4211 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
4212 set >> $logfile
4213
4214 test -n "$valgrind" && toolchain="valgrind-memcheck"
4215
4216 enabled ossfuzz && ! echo $CFLAGS | grep -q -- "-fsanitize="  && ! echo $CFLAGS | grep -q -- "-fcoverage-mapping" &&{
4217     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
4218     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
4219 }
4220
4221 case "$toolchain" in
4222     *-asan)
4223         cc_default="${toolchain%-asan}"
4224         add_cflags  -fsanitize=address
4225         add_ldflags -fsanitize=address
4226     ;;
4227     *-msan)
4228         cc_default="${toolchain%-msan}"
4229         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
4230         add_ldflags -fsanitize=memory
4231     ;;
4232     *-tsan)
4233         cc_default="${toolchain%-tsan}"
4234         add_cflags  -fsanitize=thread
4235         add_ldflags -fsanitize=thread
4236         case "$toolchain" in
4237             gcc-tsan)
4238                 add_cflags  -fPIC
4239                 add_ldflags -fPIC
4240                 ;;
4241         esac
4242     ;;
4243     *-usan)
4244         cc_default="${toolchain%-usan}"
4245         add_cflags  -fsanitize=undefined
4246         add_ldflags -fsanitize=undefined
4247     ;;
4248     valgrind-*)
4249         target_exec_default="valgrind"
4250         case "$toolchain" in
4251             valgrind-massif)
4252                 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"
4253                 ;;
4254             valgrind-memcheck)
4255                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
4256                 ;;
4257         esac
4258     ;;
4259     msvc)
4260         # Check whether the current MSVC version needs the C99 converter.
4261         # From MSVC 2013 (compiler major version 18) onwards, it does actually
4262         # support enough of C99 to build ffmpeg. Default to the new
4263         # behaviour if the regexp was unable to match anything, since this
4264         # successfully parses the version number of existing supported
4265         # versions that require the converter (MSVC 2010 and 2012).
4266         cl_major_ver=$(cl.exe 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
4267         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
4268             cc_default="cl.exe"
4269             cxx_default="cl.exe"
4270         else
4271             die "Unsupported MSVC version (2013 or newer required)"
4272         fi
4273         ld_default="$source_path/compat/windows/mslink"
4274         nm_default="dumpbin.exe -symbols"
4275         ar_default="lib.exe"
4276         case "${arch:-$arch_default}" in
4277         aarch64|arm64)
4278             as_default="armasm64.exe"
4279             ;;
4280         arm*)
4281             as_default="armasm.exe"
4282             ;;
4283         esac
4284         target_os_default="win32"
4285         # Use a relative path for TMPDIR. This makes sure all the
4286         # ffconf temp files are written with a relative path, avoiding
4287         # issues with msys/win32 path conversion for MSVC parameters
4288         # such as -Fo<file> or -out:<file>.
4289         TMPDIR=.
4290     ;;
4291     icl)
4292         cc_default="icl"
4293         ld_default="xilink"
4294         nm_default="dumpbin -symbols"
4295         ar_default="xilib"
4296         target_os_default="win32"
4297         TMPDIR=.
4298     ;;
4299     gcov)
4300         add_cflags  -fprofile-arcs -ftest-coverage
4301         add_ldflags -fprofile-arcs -ftest-coverage
4302     ;;
4303     llvm-cov)
4304         add_cflags -fprofile-arcs -ftest-coverage
4305         add_ldflags --coverage
4306     ;;
4307     hardened)
4308         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
4309         add_cflags   -fno-strict-overflow -fstack-protector-all
4310         add_ldflags  -Wl,-z,relro -Wl,-z,now
4311         add_cflags   -fPIE
4312         add_ldexeflags -fPIE -pie
4313     ;;
4314     ?*)
4315         die "Unknown toolchain $toolchain"
4316     ;;
4317 esac
4318
4319 if test -n "$cross_prefix"; then
4320     test -n "$arch" && test -n "$target_os" ||
4321         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
4322     enable cross_compile
4323 fi
4324
4325 set_default target_os
4326 if test "$target_os" = android; then
4327     cc_default="clang"
4328 fi
4329
4330 ar_default="${cross_prefix}${ar_default}"
4331 cc_default="${cross_prefix}${cc_default}"
4332 cxx_default="${cross_prefix}${cxx_default}"
4333 nm_default="${cross_prefix}${nm_default}"
4334 pkg_config_default="${cross_prefix}${pkg_config_default}"
4335 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
4336     ranlib_default="${cross_prefix}${ranlib_default} -D"
4337 else
4338     ranlib_default="${cross_prefix}${ranlib_default}"
4339 fi
4340 strip_default="${cross_prefix}${strip_default}"
4341 windres_default="${cross_prefix}${windres_default}"
4342
4343 sysinclude_default="${sysroot}/usr/include"
4344
4345 if enabled cuda_sdk; then
4346     warn "Option --enable-cuda-sdk is deprecated. Use --enable-cuda-nvcc instead."
4347     enable cuda_nvcc
4348 fi
4349
4350 if enabled cuda_nvcc; then
4351     nvcc_default="nvcc"
4352     nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
4353 else
4354     nvcc_default="clang"
4355     nvccflags_default="--cuda-gpu-arch=sm_30 -O2"
4356     NVCC_C=""
4357 fi
4358
4359 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
4360     target_exec x86asmexe nvcc
4361 enabled cross_compile || host_cc_default=$cc
4362 set_default host_cc
4363
4364 pkg_config_fail_message=""
4365 if ! $pkg_config --version >/dev/null 2>&1; then
4366     warn "$pkg_config not found, library detection may fail."
4367     pkg_config=false
4368 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
4369     pkg_config_fail_message="
4370 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
4371 fi
4372
4373 if test $doxygen != $doxygen_default && \
4374   ! $doxygen --version >/dev/null 2>&1; then
4375     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
4376 fi
4377
4378 exesuf() {
4379     case $1 in
4380         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
4381     esac
4382 }
4383
4384 EXESUF=$(exesuf $target_os)
4385 HOSTEXESUF=$(exesuf $host_os)
4386
4387 # set temporary file name
4388 : ${TMPDIR:=$TEMPDIR}
4389 : ${TMPDIR:=$TMP}
4390 : ${TMPDIR:=/tmp}
4391
4392 if [ -n "$tempprefix" ] ; then
4393     mktemp(){
4394         tmpname="$tempprefix.${HOSTNAME}.${UID}"
4395         echo "$tmpname"
4396         mkdir "$tmpname"
4397     }
4398 elif ! test_cmd mktemp -u XXXXXX; then
4399     # simple replacement for missing mktemp
4400     # NOT SAFE FOR GENERAL USE
4401     mktemp(){
4402         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
4403         echo "$tmpname"
4404         mkdir "$tmpname"
4405     }
4406 fi
4407
4408 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
4409     die "Unable to create temporary directory in $TMPDIR."
4410
4411 tmpfile(){
4412     tmp="${FFTMPDIR}/test"$2
4413     (set -C; exec > $tmp) 2> /dev/null ||
4414         die "Unable to create temporary file in $FFTMPDIR."
4415     eval $1=$tmp
4416 }
4417
4418 trap 'rm -rf -- "$FFTMPDIR"' EXIT
4419 trap 'exit 2' INT
4420
4421 tmpfile TMPASM .asm
4422 tmpfile TMPC   .c
4423 tmpfile TMPCPP .cpp
4424 tmpfile TMPE   $EXESUF
4425 tmpfile TMPH   .h
4426 tmpfile TMPM   .m
4427 tmpfile TMPCU  .cu
4428 tmpfile TMPO   .o
4429 tmpfile TMPS   .S
4430 tmpfile TMPSH  .sh
4431 tmpfile TMPV   .ver
4432
4433 unset -f mktemp
4434
4435 chmod +x $TMPE
4436
4437 # make sure we can execute files in $TMPDIR
4438 cat > $TMPSH 2>> $logfile <<EOF
4439 #! /bin/sh
4440 EOF
4441 chmod +x $TMPSH >> $logfile 2>&1
4442 if ! $TMPSH >> $logfile 2>&1; then
4443     cat <<EOF
4444 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
4445 variable to another directory and make sure that it is not mounted noexec.
4446 EOF
4447     die "Sanity test failed."
4448 fi
4449
4450 armasm_flags(){
4451     for flag; do
4452         case $flag in
4453             # Filter out MSVC cl.exe options from cflags that shouldn't
4454             # be passed to gas-preprocessor
4455             -M[TD]*)                                            ;;
4456             *)                  echo $flag                      ;;
4457         esac
4458    done
4459 }
4460
4461 cparser_flags(){
4462     for flag; do
4463         case $flag in
4464             -Wno-switch)             echo -Wno-switch-enum ;;
4465             -Wno-format-zero-length) ;;
4466             -Wdisabled-optimization) ;;
4467             -Wno-pointer-sign)       echo -Wno-other ;;
4468             *)                       echo $flag ;;
4469         esac
4470     done
4471 }
4472
4473 msvc_common_flags(){
4474     for flag; do
4475         case $flag in
4476             # In addition to specifying certain flags under the compiler
4477             # specific filters, they must be specified here as well or else the
4478             # generic catch all at the bottom will print the original flag.
4479             -Wall)                ;;
4480             -Wextra)              ;;
4481             -std=c*)              ;;
4482             # Common flags
4483             -fomit-frame-pointer) ;;
4484             -g)                   echo -Z7 ;;
4485             -fno-math-errno)      ;;
4486             -fno-common)          ;;
4487             -fno-signed-zeros)    ;;
4488             -fPIC)                ;;
4489             -mthumb)              ;;
4490             -march=*)             ;;
4491             -lz)                  echo zlib.lib ;;
4492             -lx264)               echo libx264.lib ;;
4493             -lstdc++)             ;;
4494             -l*)                  echo ${flag#-l}.lib ;;
4495             -LARGEADDRESSAWARE)   echo $flag ;;
4496             -L*)                  echo -libpath:${flag#-L} ;;
4497             -Wl,*)                ;;
4498             *)                    echo $flag ;;
4499         esac
4500     done
4501 }
4502
4503 msvc_flags(){
4504     msvc_common_flags "$@"
4505     for flag; do
4506         case $flag in
4507             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4508                                        -wd4554 ;;
4509             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4510                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4511                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4512                                        -wd4307 \
4513                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4514         esac
4515     done
4516 }
4517
4518 icl_flags(){
4519     msvc_common_flags "$@"
4520     for flag; do
4521         case $flag in
4522             # Despite what Intel's documentation says -Wall, which is supported
4523             # on Windows, does enable remarks so disable them here.
4524             -Wall)                echo $flag -Qdiag-disable:remark ;;
4525             -std=c99)             echo -Qstd=c99 ;;
4526             -flto)                echo -ipo ;;
4527         esac
4528     done
4529 }
4530
4531 icc_flags(){
4532     for flag; do
4533         case $flag in
4534             -flto)                echo -ipo ;;
4535             *)                    echo $flag ;;
4536         esac
4537     done
4538 }
4539
4540 suncc_flags(){
4541     for flag; do
4542         case $flag in
4543             -march=*|-mcpu=*)
4544                 case "${flag#*=}" in
4545                     native)                   echo -xtarget=native       ;;
4546                     v9|niagara)               echo -xarch=sparc          ;;
4547                     ultrasparc)               echo -xarch=sparcvis       ;;
4548                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4549                     i586|pentium)             echo -xchip=pentium        ;;
4550                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4551                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4552                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4553                     pentium4*)          echo -xtarget=pentium4           ;;
4554                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4555                     *-sse3)             echo -xarch=sse3                 ;;
4556                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4557                     bonnell)                   echo -xarch=ssse3         ;;
4558                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4559                     westmere)                  echo -xtarget=westmere    ;;
4560                     silvermont)                echo -xarch=sse4_2        ;;
4561                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4562                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4563                                                echo -xarch=avx           ;;
4564                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4565                     btver1)                    echo -xarch=amdsse4a      ;;
4566                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4567                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4568                     k8|opteron|athlon64|athlon-fx)
4569                                                echo -xarch=sse2a         ;;
4570                     athlon*)                   echo -xarch=pentium_proa  ;;
4571                 esac
4572                 ;;
4573             -std=c99)             echo -xc99              ;;
4574             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4575             -fPIC)                echo -KPIC -xcode=pic32 ;;
4576             -W*,*)                echo $flag              ;;
4577             -f*-*|-W*|-mimpure-text)                      ;;
4578             -shared)              echo -G                 ;;
4579             *)                    echo $flag              ;;
4580         esac
4581     done
4582 }
4583
4584 probe_cc(){
4585     pfx=$1
4586     _cc=$2
4587     first=$3
4588
4589     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4590     unset _ld_o _ldflags _ld_lib _ld_path
4591     unset _depflags _DEPCMD _DEPFLAGS
4592     _flags_filter=echo
4593
4594     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4595         true # no-op to avoid reading stdin in following checks
4596     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4597         _type=llvm_gcc
4598         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4599         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4600         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4601         _cflags_speed='-O3'
4602         _cflags_size='-Os'
4603     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4604         _type=gcc
4605         gcc_version=$($_cc --version | head -n1)
4606         gcc_basever=$($_cc -dumpversion)
4607         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4608         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4609         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4610         case $gcc_basever in
4611             2) ;;
4612             2.*) ;;
4613             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4614         esac
4615         if [ "$first" = true ]; then
4616             case $gcc_basever in
4617                 4.2*)
4618                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4619             esac
4620         fi
4621         _cflags_speed='-O3'
4622         _cflags_size='-Os'
4623     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4624         _type=icc
4625         _ident=$($_cc --version | head -n1)
4626         _depflags='-MMD'
4627         _cflags_speed='-O3'
4628         _cflags_size='-Os'
4629         _cflags_noopt='-O1'
4630         _flags_filter=icc_flags
4631     elif $_cc -v 2>&1 | grep -q xlc; then
4632         _type=xlc
4633         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4634         _cflags_speed='-O5'
4635         _cflags_size='-O5 -qcompact'
4636     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4637         test -d "$sysroot" || die "No valid sysroot specified."
4638         _type=armcc
4639         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4640         armcc_conf="$PWD/armcc.conf"
4641         $_cc --arm_linux_configure                 \
4642              --arm_linux_config_file="$armcc_conf" \
4643              --configure_sysroot="$sysroot"        \
4644              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4645              die "Error creating armcc configuration file."
4646         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4647         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4648         as_default="${cross_prefix}gcc"
4649         _depflags='-MMD'
4650         _cflags_speed='-O3'
4651         _cflags_size='-Os'
4652     elif $_cc -v 2>&1 | grep -q clang && ! $_cc -? > /dev/null 2>&1; then
4653         _type=clang
4654         _ident=$($_cc --version 2>/dev/null | head -n1)
4655         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4656         _cflags_speed='-O3'
4657         _cflags_size='-Oz'
4658     elif $_cc -V 2>&1 | grep -q Sun; then
4659         _type=suncc
4660         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4661         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4662         _DEPFLAGS='-xM1 -xc99'
4663         _ldflags='-std=c99'
4664         _cflags_speed='-O5'
4665         _cflags_size='-O5 -xspace'
4666         _flags_filter=suncc_flags
4667     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4668         _type=pathscale
4669         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4670         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4671         _cflags_speed='-O2'
4672         _cflags_size='-Os'
4673         _flags_filter='filter_out -Wdisabled-optimization'
4674     elif $_cc -v 2>&1 | grep -q Open64; then
4675         _type=open64
4676         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4677         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4678         _cflags_speed='-O2'
4679         _cflags_size='-Os'
4680         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4681     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4682         _type=armasm
4683         _ident=$($_cc | head -n1)
4684         # 4509: "This form of conditional instruction is deprecated"
4685         _flags="-nologo -ignore 4509"
4686         _flags_filter=armasm_flags
4687     elif $_cc 2>&1 | grep -q Intel; then
4688         _type=icl
4689         _ident=$($_cc 2>&1 | head -n1)
4690         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4691         # Not only is O3 broken on 13.x+ but it is slower on all previous
4692         # versions (tested) as well.
4693         _cflags_speed="-O2"
4694         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4695         if $_cc 2>&1 | grep -q Linker; then
4696             _ld_o='-out:$@'
4697         else
4698             _ld_o='-Fe$@'
4699         fi
4700         _cc_o='-Fo$@'
4701         _cc_e='-P'
4702         _flags_filter=icl_flags
4703         _ld_lib='lib%.a'
4704         _ld_path='-libpath:'
4705         # -Qdiag-error to make icl error when seeing certain unknown arguments
4706         _flags='-nologo -Qdiag-error:4044,10157'
4707         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4708         # with MSVC which enables it by default.
4709         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4710         disable stripping
4711     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4712         # lld can emulate multiple different linkers; in ms link.exe mode,
4713         # the -? parameter gives the help output which contains an identifyable
4714         # string, while it gives an error in other modes.
4715         _type=lld-link
4716         # The link.exe mode doesn't have a switch for getting the version,
4717         # but we can force it back to gnu mode and get the version from there.
4718         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4719         _ld_o='-out:$@'
4720         _flags_filter=msvc_flags
4721         _ld_lib='lib%.a'
4722         _ld_path='-libpath:'
4723     elif $_cc -nologo- 2>&1 | grep -q Microsoft || { $_cc -v 2>&1 | grep -q clang && $_cc -? > /dev/null 2>&1; }; then
4724         _type=msvc
4725         if $_cc -nologo- 2>&1 | grep -q Microsoft; then
4726             _ident=$($_cc 2>&1 | head -n1 | tr -d '\r')
4727         else
4728             _ident=$($_cc --version 2>/dev/null | head -n1 | tr -d '\r')
4729         fi
4730         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4731         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4732         _cflags_speed="-O2"
4733         _cflags_size="-O1"
4734         _cflags_noopt="-O1"
4735         if $_cc -nologo- 2>&1 | grep -q Linker; then
4736             _ld_o='-out:$@'
4737         else
4738             _ld_o='-Fe$@'
4739         fi
4740         _cc_o='-Fo$@'
4741         _cc_e='-P -Fi$@'
4742         _flags_filter=msvc_flags
4743         _ld_lib='lib%.a'
4744         _ld_path='-libpath:'
4745         _flags='-nologo'
4746         disable stripping
4747     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4748         _type=cparser
4749         _ident=$($_cc --version | head -n1)
4750         _depflags='-MMD'
4751         _cflags_speed='-O4'
4752         _cflags_size='-O2'
4753         _flags_filter=cparser_flags
4754     fi
4755
4756     eval ${pfx}_type=\$_type
4757     eval ${pfx}_ident=\$_ident
4758 }
4759
4760 set_ccvars(){
4761     eval ${1}_C=\${_cc_c-\${${1}_C}}
4762     eval ${1}_E=\${_cc_e-\${${1}_E}}
4763     eval ${1}_O=\${_cc_o-\${${1}_O}}
4764
4765     if [ -n "$_depflags" ]; then
4766         eval ${1}_DEPFLAGS=\$_depflags
4767     else
4768         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4769         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4770         eval DEP${1}FLAGS=\$_flags
4771     fi
4772 }
4773
4774 probe_cc cc "$cc" "true"
4775 cflags_filter=$_flags_filter
4776 cflags_speed=$_cflags_speed
4777 cflags_size=$_cflags_size
4778 cflags_noopt=$_cflags_noopt
4779 add_cflags $_flags $_cflags
4780 cc_ldflags=$_ldflags
4781 set_ccvars CC
4782 set_ccvars CXX
4783
4784 probe_cc hostcc "$host_cc"
4785 host_cflags_filter=$_flags_filter
4786 host_cflags_speed=$_cflags_speed
4787 add_host_cflags  $_flags $_cflags
4788 set_ccvars HOSTCC
4789
4790 test -n "$cc_type" && enable $cc_type ||
4791     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4792
4793 : ${as_default:=$cc}
4794 : ${objcc_default:=$cc}
4795 : ${dep_cc_default:=$cc}
4796 : ${ld_default:=$cc}
4797 : ${host_ld_default:=$host_cc}
4798 set_default ar as objcc dep_cc ld ln_s host_ld windres
4799
4800 probe_cc as "$as"
4801 asflags_filter=$_flags_filter
4802 add_asflags $_flags $_cflags
4803 set_ccvars AS
4804
4805 probe_cc objcc "$objcc"
4806 objcflags_filter=$_flags_filter
4807 add_objcflags $_flags $_cflags
4808 set_ccvars OBJC
4809
4810 probe_cc ld "$ld"
4811 ldflags_filter=$_flags_filter
4812 add_ldflags $_flags $_ldflags
4813 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4814 LD_O=${_ld_o-$LD_O}
4815 LD_LIB=${_ld_lib-$LD_LIB}
4816 LD_PATH=${_ld_path-$LD_PATH}
4817
4818 probe_cc hostld "$host_ld"
4819 host_ldflags_filter=$_flags_filter
4820 add_host_ldflags $_flags $_ldflags
4821 HOSTLD_O=${_ld_o-$HOSTLD_O}
4822
4823 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4824     probe_cc depcc "$dep_cc"
4825     CCDEP=${_DEPCMD:-$DEPCMD}
4826     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4827     DEPCCFLAGS=$_flags
4828 fi
4829
4830 if $ar 2>&1 | grep -q Microsoft; then
4831     arflags="-nologo"
4832     ar_o='-out:$@'
4833 elif $ar 2>&1 | grep -q "\[D\] "; then
4834     arflags="rcD"
4835     ar_o='$@'
4836 else
4837     arflags="rc"
4838     ar_o='$@'
4839 fi
4840
4841 add_cflags $extra_cflags
4842 add_cxxflags $extra_cxxflags
4843 add_objcflags $extra_objcflags
4844 add_asflags $extra_cflags
4845
4846 if test -n "$sysroot"; then
4847     case "$cc_type" in
4848         gcc|llvm_gcc|clang)
4849             add_cppflags --sysroot="$sysroot"
4850             add_ldflags --sysroot="$sysroot"
4851         ;;
4852     esac
4853 fi
4854
4855 if test "$cpu" = host; then
4856     enabled cross_compile &&
4857         warn "--cpu=host makes no sense when cross-compiling."
4858
4859     case "$cc_type" in
4860         gcc|llvm_gcc)
4861             check_native(){
4862                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4863                 sed -n "/cc1.*$1=/{
4864                             s/.*$1=\\([^ ]*\\).*/\\1/
4865                             p
4866                             q
4867                         }" $TMPE
4868             }
4869             cpu=$(check_native -march || check_native -mcpu)
4870         ;;
4871         clang)
4872             check_native(){
4873                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4874                 sed -n "/cc1.*-target-cpu /{
4875                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4876                             p
4877                             q
4878                         }" $TMPE
4879             }
4880             cpu=$(check_native -march)
4881         ;;
4882     esac
4883
4884     test "${cpu:-host}" = host &&
4885         die "--cpu=host not supported with compiler $cc"
4886 fi
4887
4888 # Deal with common $arch aliases
4889 case "$arch" in
4890     aarch64|arm64)
4891         arch="aarch64"
4892     ;;
4893     arm*|iPad*|iPhone*)
4894         arch="arm"
4895     ;;
4896     mips*|IP*)
4897         case "$arch" in
4898         *el)
4899             add_cppflags -EL
4900             add_ldflags -EL
4901         ;;
4902         *eb)
4903             add_cppflags -EB
4904             add_ldflags -EB
4905         ;;
4906         esac
4907         arch="mips"
4908     ;;
4909     parisc*|hppa*)
4910         arch="parisc"
4911     ;;
4912     "Power Macintosh"|ppc*|powerpc*)
4913         arch="ppc"
4914     ;;
4915     s390|s390x)
4916         arch="s390"
4917     ;;
4918     sh4|sh)
4919         arch="sh4"
4920     ;;
4921     sun4*|sparc*)
4922         arch="sparc"
4923     ;;
4924     tilegx|tile-gx)
4925         arch="tilegx"
4926     ;;
4927     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4928         arch="x86"
4929     ;;
4930 esac
4931
4932 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4933 enable $arch
4934
4935 # Add processor-specific flags
4936 if enabled aarch64; then
4937
4938     case $cpu in
4939         armv*)
4940             cpuflags="-march=$cpu"
4941         ;;
4942         *)
4943             cpuflags="-mcpu=$cpu"
4944         ;;
4945     esac
4946
4947 elif enabled alpha; then
4948
4949     cpuflags="-mcpu=$cpu"
4950
4951 elif enabled arm; then
4952
4953     check_arm_arch() {
4954         test_cpp_condition stddef.h \
4955             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4956             $cpuflags
4957     }
4958
4959     probe_arm_arch() {
4960         if   check_arm_arch 4;        then echo armv4
4961         elif check_arm_arch 4T;       then echo armv4t
4962         elif check_arm_arch 5;        then echo armv5
4963         elif check_arm_arch 5E;       then echo armv5e
4964         elif check_arm_arch 5T;       then echo armv5t
4965         elif check_arm_arch 5TE;      then echo armv5te
4966         elif check_arm_arch 5TEJ;     then echo armv5te
4967         elif check_arm_arch 6;        then echo armv6
4968         elif check_arm_arch 6J;       then echo armv6j
4969         elif check_arm_arch 6K;       then echo armv6k
4970         elif check_arm_arch 6Z;       then echo armv6z
4971         elif check_arm_arch 6KZ;      then echo armv6zk
4972         elif check_arm_arch 6ZK;      then echo armv6zk
4973         elif check_arm_arch 6T2;      then echo armv6t2
4974         elif check_arm_arch 7;        then echo armv7
4975         elif check_arm_arch 7A  7_A;  then echo armv7-a
4976         elif check_arm_arch 7S;       then echo armv7-a
4977         elif check_arm_arch 7R  7_R;  then echo armv7-r
4978         elif check_arm_arch 7M  7_M;  then echo armv7-m
4979         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4980         elif check_arm_arch 8A  8_A;  then echo armv8-a
4981         fi
4982     }
4983
4984     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4985
4986     case $cpu in
4987         armv*)
4988             cpuflags="-march=$cpu"
4989             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4990         ;;
4991         *)
4992             cpuflags="-mcpu=$cpu"
4993             case $cpu in
4994                 cortex-a*)                               subarch=armv7a  ;;
4995                 cortex-r*)                               subarch=armv7r  ;;
4996                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4997                 arm11*)                                  subarch=armv6   ;;
4998                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4999                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
5000                 *)                             subarch=$(probe_arm_arch) ;;
5001             esac
5002         ;;
5003     esac
5004
5005     case "$subarch" in
5006         armv5t*)    enable fast_clz                ;;
5007         armv[6-8]*)
5008             enable fast_clz
5009             disabled fast_unaligned || enable fast_unaligned
5010             ;;
5011     esac
5012
5013 elif enabled avr32; then
5014
5015     case $cpu in
5016         ap7[02]0[0-2])
5017             subarch="avr32_ap"
5018             cpuflags="-mpart=$cpu"
5019         ;;
5020         ap)
5021             subarch="avr32_ap"
5022             cpuflags="-march=$cpu"
5023         ;;
5024         uc3[ab]*)
5025             subarch="avr32_uc"
5026             cpuflags="-mcpu=$cpu"
5027         ;;
5028         uc)
5029             subarch="avr32_uc"
5030             cpuflags="-march=$cpu"
5031         ;;
5032     esac
5033
5034 elif enabled bfin; then
5035
5036     cpuflags="-mcpu=$cpu"
5037
5038 elif enabled mips; then
5039
5040     if [ "$cpu" != "generic" ]; then
5041         disable mips32r2
5042         disable mips32r5
5043         disable mips64r2
5044         disable mips32r6
5045         disable mips64r6
5046         disable loongson2
5047         disable loongson3
5048         disable mipsdsp
5049         disable mipsdspr2
5050
5051         cpuflags="-march=$cpu"
5052
5053         case $cpu in
5054             # General ISA levels
5055             mips1|mips3)
5056             ;;
5057             mips32r2)
5058                 enable mips32r2
5059             ;;
5060             mips32r5)
5061                 enable mips32r2
5062                 enable mips32r5
5063             ;;
5064             mips64r2|mips64r5)
5065                 enable mips64r2
5066                 enable loongson3
5067             ;;
5068             # Cores from MIPS(MTI)
5069             24kc)
5070                 disable mipsfpu
5071                 enable mips32r2
5072             ;;
5073             24kf*|24kec|34kc|74Kc|1004kc)
5074                 enable mips32r2
5075             ;;
5076             24kef*|34kf*|1004kf*)
5077                 enable mipsdsp
5078                 enable mips32r2
5079             ;;
5080             p5600)
5081                 enable mips32r2
5082                 enable mips32r5
5083                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
5084             ;;
5085             i6400)
5086                 enable mips64r6
5087                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
5088             ;;
5089             p6600)
5090                 enable mips64r6
5091                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
5092             ;;
5093             # Cores from Loongson
5094             loongson2e|loongson2f|loongson3*)
5095                 enable local_aligned
5096                 enable simd_align_16
5097                 enable fast_64bit
5098                 enable fast_clz
5099                 enable fast_cmov
5100                 enable fast_unaligned
5101                 disable aligned_stack
5102                 # When gcc version less than 5.3.0, add -fno-expensive-optimizations flag.
5103                 if test "$cc_type" = "gcc"; then
5104                     case $gcc_basever in
5105                         2|2.*|3.*|4.*|5.0|5.1|5.2)
5106                         expensive_optimization_flag="-fno-expensive-optimizations"
5107                         ;;
5108                         *)
5109                         expensive_optimization_flag=""
5110                         ;;
5111                     esac
5112                 fi
5113
5114                 case $cpu in
5115                     loongson3*)
5116                         enable loongson3
5117                         cpuflags="-march=loongson3a -mhard-float $expensive_optimization_flag"
5118                     ;;
5119                     loongson2e)
5120                         enable loongson2
5121                         cpuflags="-march=loongson2e -mhard-float $expensive_optimization_flag"
5122                     ;;
5123                     loongson2f)
5124                         enable loongson2
5125                         cpuflags="-march=loongson2f -mhard-float $expensive_optimization_flag"
5126                     ;;
5127                 esac
5128             ;;
5129             *)
5130                 warn "unknown MIPS CPU"
5131             ;;
5132         esac
5133
5134     else
5135         disable mipsdsp
5136         disable mipsdspr2
5137         # Disable DSP stuff for generic CPU, it can't be detected at runtime.
5138         warn 'generic cpu selected'
5139     fi
5140
5141 elif enabled ppc; then
5142
5143     disable ldbrx
5144
5145     case $(tolower $cpu) in
5146         601|ppc601|powerpc601)
5147             cpuflags="-mcpu=601"
5148             disable altivec
5149         ;;
5150         603*|ppc603*|powerpc603*)
5151             cpuflags="-mcpu=603"
5152             disable altivec
5153         ;;
5154         604*|ppc604*|powerpc604*)
5155             cpuflags="-mcpu=604"
5156             disable altivec
5157         ;;
5158         g3|75*|ppc75*|powerpc75*)
5159             cpuflags="-mcpu=750"
5160             disable altivec
5161         ;;
5162         g4|745*|ppc745*|powerpc745*)
5163             cpuflags="-mcpu=7450"
5164             disable vsx
5165         ;;
5166         74*|ppc74*|powerpc74*)
5167             cpuflags="-mcpu=7400"
5168             disable vsx
5169         ;;
5170         g5|970|ppc970|powerpc970)
5171             cpuflags="-mcpu=970"
5172             disable vsx
5173         ;;
5174         power[3-6]*)
5175             cpuflags="-mcpu=$cpu"
5176             disable vsx
5177         ;;
5178         power[7-8]*)
5179             cpuflags="-mcpu=$cpu"
5180         ;;
5181         cell)
5182             cpuflags="-mcpu=cell"
5183             enable ldbrx
5184             disable vsx
5185         ;;
5186         e500mc)
5187             cpuflags="-mcpu=e500mc"
5188             disable altivec
5189         ;;
5190         e500v2)
5191             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
5192             disable altivec
5193             disable dcbzl
5194         ;;
5195         e500)
5196             cpuflags="-mcpu=8540 -mhard-float"
5197             disable altivec
5198             disable dcbzl
5199         ;;
5200     esac
5201
5202 elif enabled sparc; then
5203
5204     case $cpu in
5205         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
5206             cpuflags="-mcpu=$cpu"
5207         ;;
5208         ultrasparc*|niagara[234])
5209             cpuflags="-mcpu=$cpu"
5210         ;;
5211     esac
5212
5213 elif enabled x86; then
5214
5215     case $cpu in
5216         i[345]86|pentium)
5217             cpuflags="-march=$cpu"
5218             disable i686
5219             disable mmx
5220         ;;
5221         # targets that do NOT support nopl and conditional mov (cmov)
5222         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
5223             cpuflags="-march=$cpu"
5224             disable i686
5225         ;;
5226         # targets that do support nopl and conditional mov (cmov)
5227         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
5228         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
5229         |amdfam10|barcelona|b[dt]ver*|znver*)
5230             cpuflags="-march=$cpu"
5231             enable i686
5232             enable fast_cmov
5233         ;;
5234         # targets that do support conditional mov but on which it's slow
5235         pentium4|pentium4m|prescott|nocona)
5236             cpuflags="-march=$cpu"
5237             enable i686
5238             disable fast_cmov
5239         ;;
5240     esac
5241
5242 fi
5243
5244 if [ "$cpu" != generic ]; then
5245     add_cflags  $cpuflags
5246     add_asflags $cpuflags
5247     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
5248 fi
5249
5250 # compiler sanity check
5251 test_exec <<EOF
5252 int main(void){ return 0; }
5253 EOF
5254 if test "$?" != 0; then
5255     echo "$cc is unable to create an executable file."
5256     if test -z "$cross_prefix" && ! enabled cross_compile ; then
5257         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
5258         echo "Only do this if you know what cross compiling means."
5259     fi
5260     die "C compiler test failed."
5261 fi
5262
5263 add_cppflags -D_ISOC99_SOURCE
5264 add_cxxflags -D__STDC_CONSTANT_MACROS
5265 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
5266
5267 # some compilers silently accept -std=c11, so we also need to check that the
5268 # version macro is defined properly
5269 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
5270     add_cflags -std=c11 ||
5271     check_cflags -std=c99
5272
5273 check_cppflags -D_FILE_OFFSET_BITS=64
5274 check_cppflags -D_LARGEFILE_SOURCE
5275
5276 add_host_cppflags -D_ISOC99_SOURCE
5277 check_host_cflags -std=c99
5278 check_host_cflags -Wall
5279 check_host_cflags $host_cflags_speed
5280
5281 check_64bit(){
5282     arch32=$1
5283     arch64=$2
5284     expr=${3:-'sizeof(void *) > 4'}
5285     test_code cc "" "int test[2*($expr) - 1]" &&
5286         subarch=$arch64 || subarch=$arch32
5287     enable $subarch
5288 }
5289
5290 case "$arch" in
5291     aarch64|alpha|ia64)
5292         enabled shared && enable_weak pic
5293     ;;
5294     mips)
5295         check_64bit mips mips64 '_MIPS_SIM > 1'
5296         enabled shared && enable_weak pic
5297     ;;
5298     parisc)
5299         check_64bit parisc parisc64
5300         enabled shared && enable_weak pic
5301     ;;
5302     ppc)
5303         check_64bit ppc ppc64
5304         enabled shared && enable_weak pic
5305     ;;
5306     s390)
5307         check_64bit s390 s390x
5308         enabled shared && enable_weak pic
5309     ;;
5310     sparc)
5311         check_64bit sparc sparc64
5312         enabled shared && enable_weak pic
5313     ;;
5314     x86)
5315         check_64bit x86_32 x86_64
5316         # Treat x32 as x64 for now. Note it also needs pic if shared
5317         test "$subarch" = "x86_32" && test_cpp_condition stddef.h 'defined(__x86_64__)' &&
5318             subarch=x86_64 && enable x86_64 && disable x86_32
5319         if enabled x86_64; then
5320             enabled shared && enable_weak pic
5321             objformat=elf64
5322         fi
5323     ;;
5324 esac
5325
5326 # OS specific
5327 case $target_os in
5328     aix)
5329         SHFLAGS=-shared
5330         add_cppflags '-I\$(SRC_PATH)/compat/aix'
5331         enabled shared && add_ldflags -Wl,-brtl
5332         arflags='-Xany -r -c'
5333         striptype=""
5334         ;;
5335     android)
5336         disable symver
5337         enable section_data_rel_ro
5338         add_cflags -fPIE
5339         add_ldexeflags -fPIE -pie
5340         SLIB_INSTALL_NAME='$(SLIBNAME)'
5341         SLIB_INSTALL_LINKS=
5342         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
5343         ;;
5344     haiku)
5345         prefix_default="/boot/common"
5346         network_extralibs="-lnetwork"
5347         host_extralibs=
5348         ;;
5349     sunos)
5350         SHFLAGS='-shared -Wl,-h,$$(@F)'
5351         enabled x86 && append SHFLAGS -mimpure-text
5352         network_extralibs="-lsocket -lnsl"
5353         add_cppflags -D__EXTENSIONS__
5354         # When using suncc to build, the Solaris linker will mark
5355         # an executable with each instruction set encountered by
5356         # the Solaris assembler.  As our libraries contain their own
5357         # guards for processor-specific code, instead suppress
5358         # generation of the HWCAPS ELF section on Solaris x86 only.
5359         enabled_all suncc x86 &&
5360             echo "hwcap_1 = OVERRIDE;" > mapfile &&
5361             add_ldflags -Wl,-M,mapfile
5362         nm_default='nm -P -g'
5363         striptype=""
5364         version_script='-M'
5365         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
5366         ;;
5367     netbsd)
5368         disable symver
5369         oss_indev_extralibs="-lossaudio"
5370         oss_outdev_extralibs="-lossaudio"
5371         enabled gcc || check_ldflags -Wl,-zmuldefs
5372         ;;
5373     openbsd|bitrig)
5374         disable symver
5375         enable section_data_rel_ro
5376         striptype=""
5377         SHFLAGS='-shared'
5378         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
5379         SLIB_INSTALL_LINKS=
5380         oss_indev_extralibs="-lossaudio"
5381         oss_outdev_extralibs="-lossaudio"
5382         ;;
5383     dragonfly)
5384         disable symver
5385         ;;
5386     freebsd)
5387         ;;
5388     bsd/os)
5389         add_extralibs -lpoll -lgnugetopt
5390         strip="strip -d"
5391         ;;
5392     darwin)
5393         enabled ppc && add_asflags -force_cpusubtype_ALL
5394         install_name_dir_default='$(SHLIBDIR)'
5395         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
5396         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
5397         strip="${strip} -x"
5398         add_ldflags -Wl,-dynamic,-search_paths_first
5399         check_cflags -Werror=partial-availability
5400         SLIBSUF=".dylib"
5401         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
5402         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
5403         enabled x86_64 && objformat="macho64" || objformat="macho32"
5404         enabled_any pic shared x86_64 ||
5405             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
5406         check_headers dispatch/dispatch.h &&
5407             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
5408         if test -n "$sysroot"; then
5409             is_in -isysroot $cc $CPPFLAGS $CFLAGS || check_cppflags -isysroot $sysroot
5410             is_in -isysroot $ld $LDFLAGS          || check_ldflags  -isysroot $sysroot
5411         fi
5412         version_script='-exported_symbols_list'
5413         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
5414         # Workaround for Xcode 11 -fstack-check bug
5415         if enabled clang; then
5416             clang_version=$($cc -dumpversion)
5417             test ${clang_version%%.*} -eq 11 && add_cflags -fno-stack-check
5418         fi
5419         ;;
5420     msys*)
5421         die "Native MSYS builds are discouraged, please use the MINGW environment."
5422         ;;
5423     mingw32*|mingw64*)
5424         target_os=mingw32
5425         LIBTARGET=i386
5426         if enabled x86_64; then
5427             LIBTARGET="i386:x86-64"
5428         elif enabled arm; then
5429             LIBTARGET="arm"
5430         elif enabled aarch64; then
5431             LIBTARGET="arm64"
5432         fi
5433         if enabled shared; then
5434             # Cannot build both shared and static libs when using dllimport.
5435             disable static
5436         fi
5437         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5438         enabled x86_32 && check_ldflags -Wl,--large-address-aware
5439         shlibdir_default="$bindir_default"
5440         SLIBPREF=""
5441         SLIBSUF=".dll"
5442         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5443         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5444         if test_cmd lib.exe -list; then
5445             SLIB_EXTRA_CMD=-'lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5446             if enabled x86_64; then
5447                 LIBTARGET=x64
5448             fi
5449         else
5450             SLIB_EXTRA_CMD=-'$(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
5451         fi
5452         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5453         SLIB_INSTALL_LINKS=
5454         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5455         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5456         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" AR="$(AR_CMD)" NM="$(NM_CMD)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5457         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--disable-auto-image-base $$(@:$(SLIBSUF)=.def)'
5458         enabled x86_64 && objformat="win64" || objformat="win32"
5459         dlltool="${cross_prefix}dlltool"
5460         ranlib=:
5461         enable dos_paths
5462         check_ldflags -Wl,--nxcompat,--dynamicbase
5463         # Lets work around some stupidity in binutils.
5464         # ld will strip relocations from executables even though we need them
5465         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
5466         # however ld then forgets what the entry point should be (oops) so we
5467         # have to manually (re)set it.
5468         if enabled x86_32; then
5469             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
5470         elif enabled x86_64; then
5471             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
5472             check_ldflags -Wl,--high-entropy-va # binutils 2.25
5473             # Set image base >4GB for extra entropy with HEASLR
5474             add_ldexeflags -Wl,--image-base,0x140000000
5475             append SHFLAGS -Wl,--image-base,0x180000000
5476         fi
5477         ;;
5478     win32|win64)
5479         disable symver
5480         if enabled shared; then
5481             # Link to the import library instead of the normal static library
5482             # for shared libs.
5483             LD_LIB='%.lib'
5484             # Cannot build both shared and static libs with MSVC or icl.
5485             disable static
5486         fi
5487         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
5488         shlibdir_default="$bindir_default"
5489         SLIBPREF=""
5490         SLIBSUF=".dll"
5491         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5492         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5493         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5494         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5495         SLIB_INSTALL_LINKS=
5496         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5497         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5498         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5499         enabled x86_64 && objformat="win64" || objformat="win32"
5500         ranlib=:
5501         enable dos_paths
5502         ;;
5503     cygwin*)
5504         target_os=cygwin
5505         shlibdir_default="$bindir_default"
5506         SLIBPREF="cyg"
5507         SLIBSUF=".dll"
5508         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5509         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5510         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5511         SLIB_INSTALL_LINKS=
5512         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
5513         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
5514         enabled x86_64 && objformat="win64" || objformat="win32"
5515         enable dos_paths
5516         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5517         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5518         ;;
5519     *-dos|freedos|opendos)
5520         network_extralibs="-lsocket"
5521         objformat="coff"
5522         enable dos_paths
5523         ;;
5524     linux)
5525         enable section_data_rel_ro
5526         enabled_any arm aarch64 && enable_weak linux_perf
5527         ;;
5528     irix*)
5529         target_os=irix
5530         ranlib="echo ignoring ranlib"
5531         ;;
5532     os/2*)
5533         strip="lxlite -CS"
5534         striptype=""
5535         objformat="aout"
5536         add_cppflags -D_GNU_SOURCE
5537         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
5538         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
5539         LIBSUF="_s.a"
5540         SLIBPREF=""
5541         SLIBSUF=".dll"
5542         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5543         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
5544         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
5545             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
5546             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
5547             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
5548             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
5549         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
5550             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
5551         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5552         SLIB_INSTALL_LINKS=
5553         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
5554         enable dos_paths
5555         enable_weak os2threads
5556         ;;
5557     gnu/kfreebsd)
5558         add_cppflags -D_BSD_SOURCE
5559         ;;
5560     gnu)
5561         ;;
5562     qnx)
5563         add_cppflags -D_QNX_SOURCE
5564         network_extralibs="-lsocket"
5565         ;;
5566     symbian)
5567         SLIBSUF=".dll"
5568         enable dos_paths
5569         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
5570         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
5571         add_ldflags -Wl,--target1-abs,--no-undefined \
5572                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
5573                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
5574         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
5575                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
5576                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
5577         ;;
5578     minix)
5579         ;;
5580     none)
5581         ;;
5582     *)
5583         die "Unknown OS '$target_os'."
5584         ;;
5585 esac
5586
5587 # test if creating links works
5588 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5589 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5590 mkdir "$link_dest"
5591 $ln_s "$link_dest" "$link_name"
5592 touch "$link_dest/test_file"
5593 if [ "$source_path" != "." ] && [ "$source_path" != "src" ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5594     # create link to source path
5595     [ -e src ] && rm src
5596     $ln_s "$source_path" src
5597     source_link=src
5598 else
5599     # creating directory links doesn't work
5600     # fall back to using the full source path
5601     source_link="$source_path"
5602 fi
5603 # cleanup
5604 rm -r "$link_dest"
5605 rm -r "$link_name"
5606
5607 # determine libc flavour
5608
5609 probe_libc(){
5610     pfx=$1
5611     pfx_no_=${pfx%_}
5612     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5613     if test_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5614         eval ${pfx}libc_type=uclibc
5615         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5616     elif test_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5617         eval ${pfx}libc_type=glibc
5618         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5619     # MinGW headers can be installed on Cygwin, so check for newlib first.
5620     elif test_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5621         eval ${pfx}libc_type=newlib
5622         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
5623     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5624     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5625         eval ${pfx}libc_type=mingw64
5626         if test_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5627             add_compat msvcrt/snprintf.o
5628             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5629         fi
5630         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5631         eval test \$${pfx_no_}cc_type = "gcc" &&
5632             add_${pfx}cppflags -D__printf__=__gnu_printf__
5633         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5634             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5635         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5636     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5637          test_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5638         eval ${pfx}libc_type=mingw32
5639         test_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5640             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5641             die "ERROR: MinGW32 runtime version must be >= 3.15."
5642         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5643         test_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
5644             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5645         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5646             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5647         eval test \$${pfx_no_}cc_type = "gcc" &&
5648             add_${pfx}cppflags -D__printf__=__gnu_printf__
5649         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5650     elif test_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5651         eval ${pfx}libc_type=msvcrt
5652         if test_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5653             if [ "$pfx" = host_ ]; then
5654                 add_host_cppflags -Dsnprintf=_snprintf
5655             else
5656                 add_compat strtod.o strtod=avpriv_strtod
5657                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5658                                              _snprintf=avpriv_snprintf  \
5659                                              vsnprintf=avpriv_vsnprintf
5660             fi
5661         fi
5662         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5663         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5664         # 0x601 by default unless something else is set by the user.
5665         # This can easily lead to us detecting functions only present
5666         # in such new versions and producing binaries requiring windows 7.0.
5667         # Therefore explicitly set the default to Vista unless the user has
5668         # set something else on the command line.
5669         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5670         # family. For these cases, configure is free to use any functions
5671         # found in the SDK headers by default. (Alternatively, we could force
5672         # _WIN32_WINNT to 0x0602 in that case.)
5673         test_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5674             { test_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0600; }
5675 #ifdef WINAPI_FAMILY
5676 #include <winapifamily.h>
5677 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5678 #error not desktop
5679 #endif
5680 #endif
5681 EOF
5682         if [ "$pfx" = "" ]; then
5683             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5684             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5685         fi
5686     elif test_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5687         eval ${pfx}libc_type=klibc
5688     elif test_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5689         eval ${pfx}libc_type=bionic
5690     elif test_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5691         eval ${pfx}libc_type=solaris
5692         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5693     elif test_${pfx}cpp_condition sys/version.h "defined __DJGPP__"; then
5694         eval ${pfx}libc_type=djgpp
5695         add_cppflags -U__STRICT_ANSI__
5696         add_cflags "-include $source_path/compat/djgpp/math.h"
5697         add_compat djgpp/math.o
5698     fi
5699     test_${pfx}cc <<EOF
5700 #include <time.h>
5701 void *v = localtime_r;
5702 EOF
5703 test "$?" != 0 && test_${pfx}cc -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 <<EOF && add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5704 #include <time.h>
5705 void *v = localtime_r;
5706 EOF
5707
5708     eval test -n "\${${pfx}libc_type}" && enable ${pfx}libc_${libc_type}
5709 }
5710
5711 probe_libc
5712 probe_libc host_
5713
5714 # hacks for compiler/libc/os combinations
5715
5716 case $libc_type in
5717     bionic)
5718         add_compat strtod.o strtod=avpriv_strtod
5719         ;;
5720 esac
5721
5722 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5723     add_cppflags '-I\$(SRC_PATH)/compat/float'
5724
5725 test_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5726
5727 set_default libdir
5728 : ${shlibdir_default:="$libdir"}
5729 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5730
5731 set_default $PATHS_LIST
5732 set_default nm
5733
5734 disabled optimizations || enabled ossfuzz || check_cflags -fomit-frame-pointer
5735
5736 enable_weak_pic() {
5737     disabled pic && return
5738     enable pic
5739     add_cppflags -DPIC
5740     case "$target_os" in
5741     mingw*|cygwin*|win*)
5742         ;;
5743     *)
5744         add_cflags -fPIC
5745         add_asflags -fPIC
5746         ;;
5747     esac
5748 }
5749
5750 enabled pic && enable_weak_pic
5751
5752 test_cc <<EOF || die "Symbol mangling check failed."
5753 int ff_extern;
5754 EOF
5755 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5756 extern_prefix=${sym%%ff_extern*}
5757
5758 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
5759
5760 for restrict_keyword in restrict __restrict__ __restrict ""; do
5761     test_code cc "" "char * $restrict_keyword p" && break
5762 done
5763
5764 check_cc pragma_deprecated "" '_Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"")'
5765
5766 # The global variable ensures the bits appear unchanged in the object file.
5767 test_cc <<EOF || die "endian test failed"
5768 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5769 EOF
5770 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5771
5772 check_cc const_nan math.h "struct { double d; } static const bar[] = { { NAN } }"
5773
5774 if ! enabled ppc64 || enabled bigendian; then
5775     disable vsx
5776 fi
5777
5778 check_gas() {
5779     log "check_gas using '$as' as AS"
5780     # :vararg is used on aarch64, arm and ppc altivec
5781     check_as vararg "
5782 .macro m n, y:vararg=0
5783 \n: .int \y
5784 .endm
5785 m x" || return 1
5786     # .altmacro is only used in arm asm
5787     ! enabled arm || check_as gnu_as ".altmacro"
5788 }
5789
5790 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5791     nogas=:
5792     enabled_any arm aarch64 && nogas=die
5793     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5794     as_noop=-v
5795
5796     case $as_type in
5797         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5798         gcc)  gaspp_as_type=gas ;;
5799         *)    gaspp_as_type=$as_type ;;
5800     esac
5801
5802     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5803
5804     test "${as#*gas-preprocessor.pl}" != "$as" ||
5805     test_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5806         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5807
5808     if ! check_gas ; then
5809         as=${gas:=$as}
5810         check_gas || \
5811             $nogas "GNU assembler not found, install/update gas-preprocessor"
5812     fi
5813
5814     check_as as_func ".func test
5815                       .endfunc"
5816 fi
5817
5818 check_inline_asm inline_asm_labels '"1:\n"'
5819
5820 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5821
5822 if enabled aarch64; then
5823     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5824     # internal assembler in clang 3.3 does not support this instruction
5825     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5826     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5827
5828     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5829
5830 elif enabled alpha; then
5831
5832     check_cflags -mieee
5833
5834 elif enabled arm; then
5835
5836     enabled msvc && check_cpp_condition thumb stddef.h "defined _M_ARMT"
5837     test_cpp_condition stddef.h "defined __thumb__" && test_cc <<EOF && enable_weak thumb
5838 float func(float a, float b){ return a+b; }
5839 EOF
5840     enabled thumb && check_cflags -mthumb || check_cflags -marm
5841
5842     if check_cpp_condition vfp_args stddef.h "defined __ARM_PCS_VFP"; then
5843         :
5844     elif check_cpp_condition vfp_args stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5845         :
5846     elif ! test_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5847         case "${cross_prefix:-$cc}" in
5848             *hardfloat*) enable vfp_args; fpabi=vfp ;;
5849             *) check_ld "cc" vfp_args <<EOF && fpabi=vfp || fpabi=soft ;;
5850 __asm__ (".eabi_attribute 28, 1");
5851 int main(void) { return 0; }
5852 EOF
5853         esac
5854         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5855     fi
5856
5857     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5858     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5859     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5860     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5861     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5862     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5863     enabled setend  && check_insn setend  'setend be'
5864
5865     [ $target_os = linux ] || [ $target_os = android ] ||
5866         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5867             $ARCH_EXT_LIST_ARM
5868
5869     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5870
5871     check_as as_arch_directive ".arch armv7-a"
5872     check_as as_dn_directive   "ra .dn d0.i16"
5873     check_as as_fpu_directive  ".fpu neon"
5874
5875     # llvm's integrated assembler supports .object_arch from llvm 3.5
5876     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
5877         check_as as_object_arch ".object_arch armv4"
5878
5879     # MS armasm fails to assemble our PIC constructs
5880     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5881
5882 elif enabled mips; then
5883
5884     # Check toolchain ISA level
5885     if enabled mips64; then
5886         enabled mips64r6 && check_inline_asm mips64r6 '"dlsa $0, $0, $0, 1"' &&
5887             disable mips64r2
5888
5889         enabled mips64r2 && check_inline_asm mips64r2 '"dext $0, $0, 0, 1"'
5890
5891         disable mips32r6 && disable mips32r5 && disable mips32r2
5892     else
5893         enabled mips32r6 && check_inline_asm mips32r6 '"aui $0, $0, 0"' &&
5894             disable mips32r5 && disable mips32r2
5895
5896         enabled mips32r5 && check_inline_asm mips32r5 '"eretnc"'
5897         enabled mips32r2 && check_inline_asm mips32r2 '"ext $0, $0, 0, 1"'
5898
5899         disable mips64r6 && disable mips64r5 && disable mips64r2
5900     fi
5901
5902     enabled mipsfpu && check_inline_asm mipsfpu '"cvt.d.l $f0, $f2"'
5903     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5904
5905     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5906     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5907
5908     # MSA and MSA2 can be detected at runtime so we supply extra flags here
5909     enabled mipsfpu && enabled msa && check_inline_asm msa '"addvi.b $w0, $w1, 1"' '-mmsa' && append MSAFLAGS '-mmsa'
5910     enabled msa && enabled msa2 && check_inline_asm msa2 '"nxbits.any.b $w0, $w0"' '-mmsa2' && append MSAFLAGS '-mmsa2'
5911
5912     # loongson2 have no switch cflag so we can only probe toolchain ability
5913     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"' && disable loongson3
5914
5915     # loongson3 is paired with MMI
5916     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"' '-mloongson-ext' && append MMIFLAGS '-mloongson-ext'
5917
5918     # MMI can be detected at runtime too
5919     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"' '-mloongson-mmi' && append MMIFLAGS '-mloongson-mmi'
5920
5921     if enabled bigendian && enabled msa; then
5922         disable msa
5923     fi
5924
5925 elif enabled parisc; then
5926
5927     if enabled gcc; then
5928         case $($cc -dumpversion) in
5929             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5930         esac
5931     fi
5932
5933 elif enabled ppc; then
5934
5935     enable local_aligned
5936
5937     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5938     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5939     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5940     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5941
5942     if enabled altivec; then
5943         check_cflags -maltivec -mabi=altivec
5944
5945         # check if our compiler supports Motorola AltiVec C API
5946         check_cc altivec altivec.h "vector signed int v1 = (vector signed int) { 0 };
5947                                     vector signed int v2 = (vector signed int) { 1 };
5948                                     v1 = vec_add(v1, v2);"
5949
5950         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5951     fi
5952
5953     if enabled vsx; then
5954         check_cflags -mvsx &&
5955         check_cc vsx altivec.h "int v[4] = { 0 };
5956                                 vector signed int v1 = vec_vsx_ld(0, v);"
5957     fi
5958
5959     if enabled power8; then
5960         check_cpp_condition power8 "altivec.h" "defined(_ARCH_PWR8)"
5961     fi
5962
5963 elif enabled x86; then
5964
5965     check_builtin rdtsc    intrin.h   "__rdtsc()"
5966     check_builtin mm_empty mmintrin.h "_mm_empty()"
5967
5968     enable local_aligned
5969
5970     # check whether EBP is available on x86
5971     # As 'i' is stored on the stack, this program will crash
5972     # if the base pointer is used to access it because the
5973     # base pointer is cleared in the inline assembly code.
5974     check_exec_crash <<EOF && enable ebp_available
5975 volatile int i=0;
5976 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5977 return i;
5978 EOF
5979
5980     # check whether EBX is available on x86
5981     check_inline_asm ebx_available '""::"b"(0)' &&
5982         check_inline_asm ebx_available '"":::"%ebx"'
5983
5984     # check whether xmm clobbers are supported
5985     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5986
5987     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5988         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5989
5990     # check whether binutils is new enough to compile SSSE3/MMXEXT
5991     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5992     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5993
5994     probe_x86asm(){
5995         x86asmexe_probe=$1
5996         if test_cmd $x86asmexe_probe -v; then
5997             x86asmexe=$x86asmexe_probe
5998             x86asm_type=nasm
5999             x86asm_debug="-g -F dwarf"
6000             X86ASMDEP=
6001             X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
6002         elif test_cmd $x86asmexe_probe --version; then
6003             x86asmexe=$x86asmexe_probe
6004             x86asm_type=yasm
6005             x86asm_debug="-g dwarf2"
6006             X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
6007             X86ASM_DEPFLAGS=
6008         fi
6009         check_x86asm x86asm "movbe ecx, [5]"
6010     }
6011
6012     if ! disabled_any asm mmx x86asm; then
6013         disable x86asm
6014         for program in $x86asmexe nasm yasm; do
6015             probe_x86asm $program && break
6016         done
6017         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
6018         X86ASMFLAGS="-f $objformat"
6019         enabled pic               && append X86ASMFLAGS "-DPIC"
6020         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
6021         case "$objformat" in
6022             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
6023         esac
6024
6025         enabled avx512 && check_x86asm avx512_external "vmovdqa32 [eax]{k1}{z}, zmm0"
6026         enabled avx2   && check_x86asm avx2_external   "vextracti128 xmm0, ymm0, 0"
6027         enabled xop    && check_x86asm xop_external    "vpmacsdd xmm0, xmm1, xmm2, xmm3"
6028         enabled fma4   && check_x86asm fma4_external   "vfmaddps ymm0, ymm1, ymm2, ymm3"
6029         check_x86asm cpunop          "CPU amdnop"
6030     fi
6031
6032     case "$cpu" in
6033         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
6034             disable fast_clz
6035         ;;
6036     esac
6037
6038 fi
6039
6040 check_cc intrinsics_neon arm_neon.h "int16x8_t test = vdupq_n_s16(0)"
6041
6042 check_ldflags -Wl,--as-needed
6043 check_ldflags -Wl,-z,noexecstack
6044
6045 if ! disabled network; then
6046     check_func getaddrinfo $network_extralibs
6047     check_func inet_aton $network_extralibs
6048
6049     check_type netdb.h "struct addrinfo"
6050     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
6051     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
6052     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
6053     check_type poll.h "struct pollfd"
6054     check_type netinet/sctp.h "struct sctp_event_subscribe"
6055     check_struct "sys/socket.h" "struct msghdr" msg_flags
6056     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
6057     check_type netinet/in.h "struct sockaddr_in6"
6058     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
6059     check_type "sys/types.h sys/socket.h" socklen_t
6060
6061     # Prefer arpa/inet.h over winsock2
6062     if check_headers arpa/inet.h ; then
6063         check_func closesocket
6064     elif check_headers winsock2.h ; then
6065         check_func_headers winsock2.h closesocket -lws2 &&
6066             network_extralibs="-lws2" ||
6067         { check_func_headers winsock2.h closesocket -lws2_32 &&
6068             network_extralibs="-lws2_32"; } || disable winsock2_h network
6069         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
6070
6071         check_type ws2tcpip.h socklen_t
6072         check_type ws2tcpip.h "struct addrinfo"
6073         check_type ws2tcpip.h "struct group_source_req"
6074         check_type ws2tcpip.h "struct ip_mreq_source"
6075         check_type ws2tcpip.h "struct ipv6_mreq"
6076         check_type winsock2.h "struct pollfd"
6077         check_struct winsock2.h "struct sockaddr" sa_len
6078         check_type ws2tcpip.h "struct sockaddr_in6"
6079         check_type ws2tcpip.h "struct sockaddr_storage"
6080     else
6081         disable network
6082     fi
6083 fi
6084
6085 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
6086 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
6087 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
6088 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
6089 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
6090 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
6091 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
6092
6093 case "$custom_allocator" in
6094     jemalloc)
6095         # jemalloc by default does not use a prefix
6096         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
6097     ;;
6098     tcmalloc)
6099         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
6100         malloc_prefix=tc_
6101     ;;
6102 esac
6103
6104 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
6105 check_func  ${malloc_prefix}memalign            && enable memalign
6106 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
6107
6108 check_func  access
6109 check_func_headers stdlib.h arc4random
6110 check_lib   clock_gettime time.h clock_gettime || check_lib clock_gettime time.h clock_gettime -lrt
6111 check_func  fcntl
6112 check_func  fork
6113 check_func  gethrtime
6114 check_func  getopt
6115 check_func  getrusage
6116 check_func  gettimeofday
6117 check_func  isatty
6118 check_func  mkstemp
6119 check_func  mmap
6120 check_func  mprotect
6121 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
6122 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
6123 check_func  sched_getaffinity
6124 check_func  setrlimit
6125 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
6126 check_func  strerror_r
6127 check_func  sysconf
6128 check_func  sysctl
6129 check_func  usleep
6130
6131 check_func_headers conio.h kbhit
6132 check_func_headers io.h setmode
6133 check_func_headers lzo/lzo1x.h lzo1x_999_compress
6134 check_func_headers mach/mach_time.h mach_absolute_time
6135 check_func_headers stdlib.h getenv
6136 check_func_headers sys/stat.h lstat
6137
6138 check_func_headers windows.h GetModuleHandle
6139 check_func_headers windows.h GetProcessAffinityMask
6140 check_func_headers windows.h GetProcessTimes
6141 check_func_headers windows.h GetStdHandle
6142 check_func_headers windows.h GetSystemTimeAsFileTime
6143 check_func_headers windows.h LoadLibrary
6144 check_func_headers windows.h MapViewOfFile
6145 check_func_headers windows.h PeekNamedPipe
6146 check_func_headers windows.h SetConsoleTextAttribute
6147 check_func_headers windows.h SetConsoleCtrlHandler
6148 check_func_headers windows.h SetDllDirectory
6149 check_func_headers windows.h Sleep
6150 check_func_headers windows.h VirtualAlloc
6151 check_func_headers glob.h glob
6152 enabled xlib &&
6153     check_lib xlib "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
6154
6155 check_headers direct.h
6156 check_headers dirent.h
6157 check_headers dxgidebug.h
6158 check_headers dxva.h
6159 check_headers dxva2api.h -D_WIN32_WINNT=0x0600
6160 check_headers io.h
6161 enabled libdrm &&
6162     check_headers linux/dma-buf.h
6163
6164 check_headers linux/perf_event.h
6165 check_headers libcrystalhd/libcrystalhd_if.h
6166 check_headers malloc.h
6167 check_headers mftransform.h
6168 check_headers net/udplite.h
6169 check_headers poll.h
6170 check_headers sys/param.h
6171 check_headers sys/resource.h
6172 check_headers sys/select.h
6173 check_headers sys/time.h
6174 check_headers sys/un.h
6175 check_headers termios.h
6176 check_headers unistd.h
6177 check_headers valgrind/valgrind.h
6178 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
6179 check_headers windows.h
6180 check_headers X11/extensions/XvMClib.h
6181 check_headers asm/types.h
6182
6183 # it seems there are versions of clang in some distros that try to use the
6184 # gcc headers, which explodes for stdatomic
6185 # so we also check that atomics actually work here
6186 check_builtin stdatomic stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0); foo += bar"
6187
6188 check_lib advapi32 "windows.h"            RegCloseKey          -ladvapi32
6189 check_lib bcrypt   "windows.h bcrypt.h"   BCryptGenRandom      -lbcrypt &&
6190     check_cpp_condition bcrypt bcrypt.h "defined BCRYPT_RNG_ALGORITHM"
6191 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
6192 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
6193 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
6194
6195 check_lib android android/native_window.h ANativeWindow_acquire -landroid
6196 check_lib mediandk "stdint.h media/NdkImage.h" AImage_delete -lmediandk
6197 check_lib camera2ndk "stdbool.h stdint.h camera/NdkCameraManager.h" ACameraManager_create -lcamera2ndk
6198
6199 enabled appkit       && check_apple_framework AppKit
6200 enabled audiotoolbox && check_apple_framework AudioToolbox
6201 enabled avfoundation && check_apple_framework AVFoundation
6202 enabled coreimage    && check_apple_framework CoreImage
6203 enabled videotoolbox && check_apple_framework VideoToolbox
6204
6205 check_apple_framework CoreFoundation
6206 check_apple_framework CoreMedia
6207 check_apple_framework CoreVideo
6208 check_apple_framework CoreAudio
6209
6210 enabled avfoundation && {
6211     disable coregraphics applicationservices
6212     check_lib coregraphics        CoreGraphics/CoreGraphics.h               CGGetActiveDisplayList "-framework CoreGraphics" ||
6213     check_lib applicationservices ApplicationServices/ApplicationServices.h CGGetActiveDisplayList "-framework ApplicationServices"; }
6214
6215 enabled videotoolbox && {
6216     check_lib coreservices CoreServices/CoreServices.h UTGetOSTypeFromString "-framework CoreServices"
6217     check_func_headers CoreMedia/CMFormatDescription.h kCMVideoCodecType_HEVC "-framework CoreMedia"
6218     check_func_headers CoreMedia/CMFormatDescription.h kCMVideoCodecType_HEVCWithAlpha "-framework CoreMedia"
6219     check_func_headers CoreVideo/CVPixelBuffer.h kCVPixelFormatType_420YpCbCr10BiPlanarVideoRange "-framework CoreVideo"
6220     check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferTransferFunction_SMPTE_ST_2084_PQ "-framework CoreVideo"
6221     check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferTransferFunction_ITU_R_2100_HLG "-framework CoreVideo"
6222     check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferTransferFunction_Linear "-framework CoreVideo"
6223 }
6224
6225 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
6226
6227 check_type "windows.h dxva.h" "DXVA_PicParams_AV1" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
6228 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
6229 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
6230 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
6231 check_type "windows.h d3d11.h" "ID3D11VideoContext"
6232 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
6233 check_func_headers mfapi.h MFCreateAlignedMemoryBuffer -lmfplat
6234
6235 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
6236 check_type "vdpau/vdpau.h" "VdpPictureInfoVP9"
6237
6238 if [ -z "$nvccflags" ]; then
6239     nvccflags=$nvccflags_default
6240 fi
6241
6242 if enabled x86_64 || enabled ppc64 || enabled aarch64; then
6243     nvccflags="$nvccflags -m64"
6244 else
6245     nvccflags="$nvccflags -m32"
6246 fi
6247
6248 if enabled cuda_nvcc; then
6249     nvccflags="$nvccflags -ptx"
6250 else
6251     nvccflags="$nvccflags -S -nocudalib -nocudainc --cuda-device-only -Wno-c++11-narrowing -include ${source_link}/compat/cuda/cuda_runtime.h"
6252     check_nvcc cuda_llvm
6253 fi
6254
6255 if ! disabled ffnvcodec; then
6256     ffnv_hdr_list="ffnvcodec/nvEncodeAPI.h ffnvcodec/dynlink_cuda.h ffnvcodec/dynlink_cuviddec.h ffnvcodec/dynlink_nvcuvid.h"
6257     check_pkg_config ffnvcodec "ffnvcodec >= 9.1.23.1" "$ffnv_hdr_list" "" || \
6258       check_pkg_config ffnvcodec "ffnvcodec >= 9.0.18.3 ffnvcodec < 9.1" "$ffnv_hdr_list" "" || \
6259       check_pkg_config ffnvcodec "ffnvcodec >= 8.2.15.10 ffnvcodec < 8.3" "$ffnv_hdr_list" "" || \
6260       check_pkg_config ffnvcodec "ffnvcodec >= 8.1.24.11 ffnvcodec < 8.2" "$ffnv_hdr_list" ""
6261 fi
6262
6263 check_cpp_condition winrt windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)"
6264
6265 if ! disabled w32threads && ! enabled pthreads; then
6266     check_func_headers "windows.h process.h" _beginthreadex &&
6267         check_type "windows.h" CONDITION_VARIABLE &&
6268         check_type "windows.h" INIT_ONCE &&
6269         enable w32threads || disable w32threads
6270     if ! enabled w32threads && enabled winrt; then
6271         check_func_headers "windows.h" CreateThread &&
6272             enable w32threads || disable w32threads
6273     fi
6274 fi
6275
6276 # check for some common methods of building with pthread support
6277 # do this before the optional library checks as some of them require pthreads
6278 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
6279     if check_lib pthreads pthread.h pthread_join   -pthread &&
6280        check_lib pthreads pthread.h pthread_create -pthread; then
6281         add_cflags -pthread
6282     elif check_lib pthreads pthread.h pthread_join   -pthreads &&
6283          check_lib pthreads pthread.h pthread_create -pthreads; then
6284         add_cflags -pthreads
6285     elif check_lib pthreads pthread.h pthread_join   -ldl -pthread &&
6286          check_lib pthreads pthread.h pthread_create -ldl -pthread; then
6287         add_cflags -ldl -pthread
6288     elif check_lib pthreads pthread.h pthread_join   -lpthreadGC2 &&
6289          check_lib pthreads pthread.h pthread_create -lpthreadGC2; then
6290         :
6291     elif check_lib pthreads pthread.h pthread_join   -lpthread &&
6292          check_lib pthreads pthread.h pthread_create -lpthread; then
6293         :
6294     elif check_func pthread_join && check_func pthread_create; then
6295         enable pthreads
6296     fi
6297     check_cc pthreads "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER"
6298
6299     if enabled pthreads; then
6300         check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
6301         check_func pthread_cancel $pthreads_extralibs
6302     fi
6303 fi
6304
6305 enabled  zlib && { check_pkg_config zlib zlib "zlib.h" zlibVersion ||
6306                    check_lib zlib   zlib.h      zlibVersion    -lz; }
6307 enabled bzlib && check_lib bzlib bzlib.h BZ2_bzlibVersion    -lbz2
6308 enabled  lzma && check_lib lzma   lzma.h lzma_version_number -llzma
6309
6310 # On some systems dynamic loading requires no extra linker flags
6311 check_lib libdl dlfcn.h "dlopen dlsym" || check_lib libdl dlfcn.h "dlopen dlsym" -ldl
6312
6313 check_lib libm math.h sin -lm
6314
6315 atan2f_args=2
6316 copysign_args=2
6317 hypot_args=2
6318 ldexpf_args=2
6319 powf_args=2
6320
6321 for func in $MATH_FUNCS; do
6322     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
6323 done
6324
6325 for func in $COMPLEX_FUNCS; do
6326     eval check_complexfunc $func \${${func}_args:-1}
6327 done
6328
6329 # these are off by default, so fail if requested and not available
6330 enabled avisynth          && require_headers "avisynth/avisynth_c.h"
6331 enabled cuda_nvcc         && { check_nvcc cuda_nvcc || die "ERROR: failed checking for nvcc."; }
6332 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
6333 enabled decklink          && { require_headers DeckLinkAPI.h &&
6334                                { test_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a0a0000" || die "ERROR: Decklink API version must be >= 10.10"; } }
6335 enabled frei0r            && require_headers "frei0r.h dlfcn.h"
6336 enabled gmp               && require gmp gmp.h mpz_export -lgmp
6337 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init
6338 enabled jni               && { [ $target_os = "android" ] && check_headers jni.h && enabled pthreads || die "ERROR: jni not found"; }
6339 enabled ladspa            && require_headers "ladspa.h dlfcn.h"
6340 enabled libaom            && require_pkg_config libaom "aom >= 1.0.0" aom/aom_codec.h aom_codec_version
6341 enabled libaribb24        && { check_pkg_config libaribb24 "aribb24 > 1.0.3" "aribb24/aribb24.h" arib_instance_new ||
6342                                { enabled gpl && require_pkg_config libaribb24 aribb24 "aribb24/aribb24.h" arib_instance_new; } ||
6343                                die "ERROR: libaribb24 requires version higher than 1.0.3 or --enable-gpl."; }
6344 enabled lv2               && require_pkg_config lv2 lilv-0 "lilv/lilv.h" lilv_world_new
6345 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
6346 enabled libass            && require_pkg_config libass libass ass/ass.h ass_library_init
6347 enabled libbluray         && require_pkg_config libbluray libbluray libbluray/bluray.h bd_open
6348 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
6349 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
6350                              { check_lib libcelt celt/celt.h celt_decoder_create_custom -lcelt0 ||
6351                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
6352 enabled libcaca           && require_pkg_config libcaca caca caca.h caca_create_canvas
6353 enabled libcodec2         && require libcodec2 codec2/codec2.h codec2_create -lcodec2
6354 enabled libdav1d          && require_pkg_config libdav1d "dav1d >= 0.5.0" "dav1d/dav1d.h" dav1d_version
6355 enabled libdavs2          && require_pkg_config libdavs2 "davs2 >= 1.6.0" davs2.h davs2_decoder_open
6356 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
6357 enabled libdrm            && require_pkg_config libdrm libdrm xf86drm.h drmGetVersion
6358 enabled libfdk_aac        && { check_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
6359                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
6360                                  warn "using libfdk without pkg-config"; } }
6361 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"
6362 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_extralibs
6363 enabled fontconfig        && enable libfontconfig
6364 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
6365 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
6366 enabled libfribidi        && require_pkg_config libfribidi fribidi fribidi.h fribidi_version_info
6367 enabled libglslang        && require_cpp libglslang glslang/SPIRV/GlslangToSpv.h "glslang::TIntermediate*" -lglslang -lMachineIndependent -lOSDependent -lHLSL -lOGLCompiler -lGenericCodeGen -lSPVRemapper -lSPIRV -lSPIRV-Tools-opt -lSPIRV-Tools -lpthread -lstdc++
6368 enabled libgme            && { check_pkg_config libgme libgme gme/gme.h gme_new_emu ||
6369                                require libgme gme/gme.h gme_new_emu -lgme -lstdc++; }
6370 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
6371                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
6372                                done || die "ERROR: libgsm not found"; }
6373 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc $pthreads_extralibs
6374 enabled libklvanc         && require libklvanc libklvanc/vanc.h klvanc_context_create -lklvanc
6375 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
6376 enabled liblensfun        && require_pkg_config liblensfun lensfun lensfun.h lf_db_new
6377 # While it may appear that require is being used as a pkg-config
6378 # fallback for libmfx, it is actually being used to detect a different
6379 # installation route altogether.  If libmfx is installed via the Intel
6380 # Media SDK or Intel Media Server Studio, these don't come with
6381 # pkg-config support.  Instead, users should make sure that the build
6382 # can find the libraries and headers through other means.
6383 enabled libmfx            && { check_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit ||
6384                                { require libmfx "mfx/mfxvideo.h" MFXInit "-llibmfx $advapi32_extralibs" && warn "using libmfx without pkg-config"; } }
6385 if enabled libmfx; then
6386    check_cc MFX_CODEC_VP9 "mfx/mfxvp9.h mfx/mfxstructures.h" "MFX_CODEC_VP9"
6387 fi
6388
6389 enabled libmodplug        && require_pkg_config libmodplug libmodplug libmodplug/modplug.h ModPlug_Load
6390 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame $libm_extralibs
6391 enabled libmysofa         && { check_pkg_config libmysofa libmysofa mysofa.h mysofa_neighborhood_init_withstepdefine ||
6392                                require libmysofa mysofa.h mysofa_neighborhood_init_withstepdefine -lmysofa $zlib_extralibs; }
6393 enabled libnpp            && { check_lib libnpp npp.h nppGetLibVersion -lnppig -lnppicc -lnppc -lnppidei ||
6394                                check_lib libnpp npp.h nppGetLibVersion -lnppi -lnppc -lnppidei ||
6395                                die "ERROR: libnpp not found"; }
6396 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
6397 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
6398 enabled libopencv         && { check_headers opencv2/core/core_c.h &&
6399                                { check_pkg_config libopencv opencv opencv2/core/core_c.h cvCreateImageHeader ||
6400                                  require libopencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
6401                                require_pkg_config libopencv opencv opencv/cxcore.h cvCreateImageHeader; }
6402 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
6403 enabled libopenjpeg       && { check_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version ||
6404                                { require_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } }
6405 enabled libopenmpt        && require_pkg_config libopenmpt "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create -lstdc++ && append libopenmpt_extralibs "-lstdc++"
6406 enabled libopenvino       && require libopenvino c_api/ie_c_api.h ie_c_api_version -linference_engine_c_api
6407 enabled libopus           && {
6408     enabled libopus_decoder && {
6409         require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
6410     }
6411     enabled libopus_encoder && {
6412         require_pkg_config libopus opus opus_multistream.h opus_multistream_surround_encoder_create
6413     }
6414 }
6415 enabled libpulse          && require_pkg_config libpulse libpulse pulse/pulseaudio.h pa_context_new
6416 enabled librabbitmq       && require_pkg_config librabbitmq "librabbitmq >= 0.7.1" amqp.h amqp_new_connection
6417 enabled librav1e          && require_pkg_config librav1e "rav1e >= 0.4.0" rav1e.h rav1e_context_new
6418 enabled librist           && require_pkg_config librist "librist >= 0.2" librist/librist.h rist_receiver_create
6419 enabled librsvg           && require_pkg_config librsvg librsvg-2.0 librsvg-2.0/librsvg/rsvg.h rsvg_handle_render_cairo
6420 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
6421 enabled librubberband     && require_pkg_config librubberband "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new -lstdc++ && append librubberband_extralibs "-lstdc++"
6422 enabled libshine          && require_pkg_config libshine shine shine/layer3.h shine_encode_buffer
6423 enabled libsmbclient      && { check_pkg_config libsmbclient smbclient libsmbclient.h smbc_init ||
6424                                require libsmbclient libsmbclient.h smbc_init -lsmbclient; }
6425 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy -lstdc++
6426 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
6427 enabled libssh            && require_pkg_config libssh libssh libssh/sftp.h sftp_init
6428 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init
6429 enabled libsrt            && require_pkg_config libsrt "srt >= 1.3.0" srt/srt.h srt_socket
6430 enabled libsvtav1         && require_pkg_config libsvtav1 "SvtAv1Enc >= 0.8.4" EbSvtAv1Enc.h svt_av1_enc_init_handle
6431 enabled libtensorflow     && require libtensorflow tensorflow/c/c_api.h TF_Version -ltensorflow
6432 enabled libtesseract      && require_pkg_config libtesseract tesseract tesseract/capi.h TessBaseAPICreate
6433 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
6434 enabled libtls            && require_pkg_config libtls libtls tls.h tls_configure
6435 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
6436                              { check_lib libtwolame twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
6437                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
6438 enabled libuavs3d         && require_pkg_config libuavs3d "uavs3d >= 1.1.41" uavs3d.h uavs3d_decode
6439 enabled libv4l2           && require_pkg_config libv4l2 libv4l2 libv4l2.h v4l2_ioctl
6440 enabled libvidstab        && require_pkg_config libvidstab "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
6441 enabled libvmaf           && require_pkg_config libvmaf "libvmaf >= 1.5.2" libvmaf.h compute_vmaf
6442 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
6443 enabled libvorbis         && require_pkg_config libvorbis vorbis vorbis/codec.h vorbis_info_init &&
6444                              require_pkg_config libvorbisenc vorbisenc vorbis/vorbisenc.h vorbis_encode_init
6445
6446 enabled libvpx            && {
6447     enabled libvpx_vp8_decoder && {
6448         check_pkg_config libvpx_vp8_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
6449             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"
6450     }
6451     enabled libvpx_vp8_encoder && {
6452         check_pkg_config libvpx_vp8_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
6453             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"
6454     }
6455     enabled libvpx_vp9_decoder && {
6456         check_pkg_config libvpx_vp9_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
6457             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"
6458     }
6459     enabled libvpx_vp9_encoder && {
6460         check_pkg_config libvpx_vp9_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
6461             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"
6462     }
6463     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
6464         die "libvpx enabled but no supported decoders found"
6465     fi
6466 }
6467
6468 enabled libwebp           && {
6469     enabled libwebp_encoder      && require_pkg_config libwebp "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
6470     enabled libwebp_anim_encoder && check_pkg_config libwebp_anim_encoder "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit; }
6471 enabled libx264           && { check_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode ||
6472                                { require libx264 "stdint.h x264.h" x264_encoder_encode "-lx264 $pthreads_extralibs $libm_extralibs" &&
6473                                  warn "using libx264 without pkg-config"; } } &&
6474                              require_cpp_condition libx264 x264.h "X264_BUILD >= 118" &&
6475                              check_cpp_condition libx262 x264.h "X264_MPEG2"
6476 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
6477                              require_cpp_condition libx265 x265.h "X265_BUILD >= 70"
6478 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode "-lxavs $pthreads_extralibs $libm_extralibs"
6479 enabled libxavs2          && require_pkg_config libxavs2 "xavs2 >= 1.3.0" "stdint.h xavs2.h" xavs2_api_get
6480 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
6481 enabled libzimg           && require_pkg_config libzimg "zimg >= 2.7.0" zimg.h zimg_get_api_version
6482 enabled libzmq            && require_pkg_config libzmq "libzmq >= 4.2.1" zmq.h zmq_ctx_new
6483 enabled libzvbi           && require_pkg_config libzvbi zvbi-0.2 libzvbi.h vbi_decoder_new &&
6484                              { test_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
6485                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
6486 enabled libxml2           && require_pkg_config libxml2 libxml-2.0 libxml2/libxml/xmlversion.h xmlCheckVersion
6487 enabled mbedtls           && { check_pkg_config mbedtls mbedtls mbedtls/x509_crt.h mbedtls_x509_crt_init ||
6488                                check_pkg_config mbedtls mbedtls mbedtls/ssl.h mbedtls_ssl_init ||
6489                                check_lib mbedtls mbedtls/ssl.h mbedtls_ssl_init -lmbedtls -lmbedx509 -lmbedcrypto ||
6490                                die "ERROR: mbedTLS not found"; }
6491 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
6492 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
6493                                { ! enabled cross_compile &&
6494                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
6495                                  add_ldflags -L/opt/vc/lib/ &&
6496                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
6497                                die "ERROR: mmal not found" &&
6498                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
6499 enabled openal            && { { for al_extralibs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
6500                                check_lib openal 'AL/al.h' alGetError "${al_extralibs}" && break; done } ||
6501                                die "ERROR: openal not found"; } &&
6502                              { test_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
6503                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
6504 enabled opencl            && { check_pkg_config opencl OpenCL CL/cl.h clEnqueueNDRangeKernel ||
6505                                check_lib opencl OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
6506                                check_lib opencl CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
6507                                die "ERROR: opencl not found"; } &&
6508                              { test_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
6509                                test_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
6510                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
6511 enabled opengl            && { check_lib opengl GL/glx.h glXGetProcAddress "-lGL" ||
6512                                check_lib opengl windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
6513                                check_lib opengl OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
6514                                check_lib opengl ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
6515                                die "ERROR: opengl not found."
6516                              }
6517 enabled omx_rpi           && { test_code cc OMX_Core.h OMX_IndexConfigBrcmVideoRequestIFrame ||
6518                                { ! enabled cross_compile &&
6519                                  add_cflags -isystem/opt/vc/include/IL &&
6520                                  test_code cc OMX_Core.h OMX_IndexConfigBrcmVideoRequestIFrame; } ||
6521                                die "ERROR: OpenMAX IL headers from raspberrypi/firmware not found"; } &&
6522                              enable omx
6523 enabled omx               && require_headers OMX_Core.h
6524 enabled openssl           && { check_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
6525                                check_pkg_config openssl openssl openssl/ssl.h SSL_library_init ||
6526                                check_lib openssl openssl/ssl.h OPENSSL_init_ssl -lssl -lcrypto ||
6527                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
6528                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
6529                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
6530                                die "ERROR: openssl not found"; }
6531 enabled pocketsphinx      && require_pkg_config pocketsphinx pocketsphinx pocketsphinx/pocketsphinx.h ps_init
6532 enabled rkmpp             && { require_pkg_config rkmpp rockchip_mpp  rockchip/rk_mpi.h mpp_create &&
6533                                require_pkg_config rockchip_mpp "rockchip_mpp >= 1.3.7" rockchip/rk_mpi.h mpp_create &&
6534                                { enabled libdrm ||
6535                                  die "ERROR: rkmpp requires --enable-libdrm"; }
6536                              }
6537 enabled vapoursynth       && require_pkg_config vapoursynth "vapoursynth-script >= 42" VSScript.h vsscript_init
6538
6539
6540 if enabled gcrypt; then
6541     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
6542     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
6543         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
6544         gcrypt_extralibs=$("${GCRYPT_CONFIG}" --libs)
6545         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_extralibs ||
6546             die "ERROR: gcrypt not found"
6547         add_cflags $gcrypt_cflags
6548     else
6549         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
6550     fi
6551 fi
6552
6553 if enabled sdl2; then
6554     SDL2_CONFIG="${cross_prefix}sdl2-config"
6555     test_pkg_config sdl2 "sdl2 >= 2.0.1 sdl2 < 2.1.0" SDL_events.h SDL_PollEvent
6556     if disabled sdl2 && "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
6557         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
6558         sdl2_extralibs=$("${SDL2_CONFIG}" --libs)
6559         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
6560         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
6561         check_func_headers SDL_events.h SDL_PollEvent $sdl2_extralibs $sdl2_cflags &&
6562             enable sdl2
6563     fi
6564     if test $target_os = "mingw32"; then
6565         sdl2_extralibs=$(filter_out '-mwindows' $sdl2_extralibs)
6566     fi
6567 fi
6568
6569 if enabled decklink; then
6570     case $target_os in
6571         mingw32*|mingw64*|win32|win64)
6572             decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
6573             decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
6574             ;;
6575     esac
6576 fi
6577
6578 enabled securetransport &&
6579     check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
6580     check_lib securetransport "Security/SecureTransport.h Security/Security.h" "SSLCreateContext" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" ||
6581         disable securetransport
6582
6583 enabled securetransport &&
6584     check_func SecItemImport "-Wl,-framework,CoreFoundation -Wl,-framework,Security"
6585
6586 enabled schannel &&
6587     check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
6588     test_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" &&
6589     schannel_extralibs="-lsecur32" ||
6590         disable schannel
6591
6592 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
6593 enabled makeinfo \
6594     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
6595     && enable makeinfo_html || disable makeinfo_html
6596 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
6597 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
6598 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
6599 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
6600
6601 # check V4L2 codecs available in the API
6602 if enabled v4l2_m2m; then
6603     check_headers linux/fb.h
6604     check_headers linux/videodev2.h
6605     test_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6606     check_cc v4l2_m2m linux/videodev2.h "int i = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_VIDEO_M2M | V4L2_BUF_FLAG_LAST;"
6607     check_cc vc1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VC1_ANNEX_G;"
6608     check_cc mpeg1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG1;"
6609     check_cc mpeg2_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG2;"
6610     check_cc mpeg4_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG4;"
6611     check_cc hevc_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_HEVC;"
6612     check_cc h263_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H263;"
6613     check_cc h264_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H264;"
6614     check_cc vp8_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP8;"
6615     check_cc vp9_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP9;"
6616 fi
6617
6618 check_headers sys/videoio.h
6619 test_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6620
6621 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
6622 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
6623 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
6624 # w32api 3.12 had it defined wrong
6625 check_cpp_condition vfwcap_defines vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER"
6626
6627 check_type "dshow.h" IBaseFilter
6628
6629 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
6630 check_headers "dev/bktr/ioctl_meteor.h dev/bktr/ioctl_bt848.h"                   ||
6631     check_headers "machine/ioctl_meteor.h machine/ioctl_bt848.h"                 ||
6632     check_headers "dev/video/meteor/ioctl_meteor.h dev/video/bktr/ioctl_bt848.h" ||
6633     check_headers "dev/ic/bt8xx.h"
6634
6635 if check_struct sys/soundcard.h audio_buf_info bytes; then
6636     enable_sanitized sys/soundcard.h
6637 else
6638     test_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_sanitized sys/soundcard.h
6639     #include <sys/soundcard.h>
6640     audio_buf_info abc;
6641 EOF
6642 fi
6643
6644 enabled alsa && { check_pkg_config alsa alsa "alsa/asoundlib.h" snd_pcm_htimestamp ||
6645                   check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound; }
6646
6647 enabled libjack &&
6648     require_pkg_config libjack jack jack/jack.h jack_port_get_latency_range
6649
6650 enabled sndio && check_lib sndio sndio.h sio_open -lsndio
6651
6652 if enabled libcdio; then
6653     check_pkg_config libcdio libcdio_paranoia "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open ||
6654     check_pkg_config libcdio libcdio_paranoia "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open ||
6655     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6656     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6657     die "ERROR: No usable libcdio/cdparanoia found"
6658 fi
6659
6660 enabled libxcb && check_pkg_config libxcb "xcb >= 1.4" xcb/xcb.h xcb_connect ||
6661     disable libxcb_shm libxcb_shape libxcb_xfixes
6662
6663 if enabled libxcb; then
6664     enabled libxcb_shm    && check_pkg_config libxcb_shm    xcb-shm    xcb/shm.h    xcb_shm_attach
6665     enabled libxcb_shape  && check_pkg_config libxcb_shape  xcb-shape  xcb/shape.h  xcb_shape_get_rectangles
6666     enabled libxcb_xfixes && check_pkg_config libxcb_xfixes xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image
6667 fi
6668
6669 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6670
6671 # d3d11va requires linking directly to dxgi and d3d11 if not building for
6672 # the desktop api partition
6673 test_cpp <<EOF && enable uwp && d3d11va_extralibs="-ldxgi -ld3d11"
6674 #ifdef WINAPI_FAMILY
6675 #include <winapifamily.h>
6676 #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
6677 #error desktop, not uwp
6678 #else
6679 // WINAPI_FAMILY_APP, WINAPI_FAMILY_PHONE_APP => UWP
6680 #endif
6681 #else
6682 #error no family set
6683 #endif
6684 EOF
6685
6686 enabled libdrm &&
6687     check_pkg_config libdrm_getfb2 libdrm "xf86drmMode.h" drmModeGetFB2
6688
6689 enabled vaapi &&
6690     check_pkg_config vaapi "libva >= 0.35.0" "va/va.h" vaInitialize
6691
6692 if enabled vaapi; then
6693     check_pkg_config vaapi_drm "libva-drm" "va/va_drm.h" vaGetDisplayDRM
6694
6695     if enabled xlib; then
6696         check_pkg_config vaapi_x11 "libva-x11" "va/va_x11.h" vaGetDisplay
6697     fi
6698
6699     check_cpp_condition vaapi_1 "va/va.h" "VA_CHECK_VERSION(1, 0, 0)"
6700
6701     check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
6702     check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
6703     check_struct "va/va.h" "VADecPictureParameterBufferAV1" bit_depth_idx
6704     check_type   "va/va.h va/va_vpp.h" "VAProcFilterParameterBufferHDRToneMapping"
6705     check_struct "va/va.h va/va_vpp.h" "VAProcPipelineCaps" rotation_flags
6706     check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
6707     check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
6708     check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
6709     check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
6710 fi
6711
6712 if enabled_all opencl libdrm ; then
6713     check_type "CL/cl_intel.h" "clCreateImageFromFdINTEL_fn" &&
6714         enable opencl_drm_beignet
6715     check_func_headers "CL/cl_ext.h" clImportMemoryARM &&
6716         enable opencl_drm_arm
6717 fi
6718
6719 if enabled_all opencl vaapi ; then
6720     if enabled opencl_drm_beignet ; then
6721         enable opencl_vaapi_beignet
6722     else
6723         check_type "CL/cl.h CL/cl_va_api_media_sharing_intel.h" "clCreateFromVA_APIMediaSurfaceINTEL_fn" &&
6724             enable opencl_vaapi_intel_media
6725     fi
6726 fi
6727
6728 if enabled_all opencl dxva2 ; then
6729     check_type "CL/cl_dx9_media_sharing.h" cl_dx9_surface_info_khr &&
6730         enable opencl_dxva2
6731 fi
6732
6733 if enabled_all opencl d3d11va ; then
6734     check_type "CL/cl_d3d11.h" clGetDeviceIDsFromD3D11KHR_fn &&
6735         enable opencl_d3d11
6736 fi
6737
6738 enabled vdpau &&
6739     check_cpp_condition vdpau vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP"
6740
6741 enabled vdpau &&
6742     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
6743
6744 enabled crystalhd && check_lib crystalhd "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd
6745
6746 enabled vulkan &&
6747     require_pkg_config vulkan "vulkan >= 1.1.97" "vulkan/vulkan.h" vkCreateInstance
6748
6749 if enabled x86; then
6750     case $target_os in
6751         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6752             ;;
6753         *)
6754             disable ffnvcodec cuvid nvdec nvenc
6755             ;;
6756     esac
6757 elif enabled_any aarch64 ppc64 && ! enabled bigendian; then
6758     case $target_os in
6759         linux)
6760             ;;
6761         *)
6762             disable ffnvcodec cuvid nvdec nvenc
6763             ;;
6764     esac
6765 else
6766     disable ffnvcodec cuvid nvdec nvenc
6767 fi
6768
6769 enabled ffnvcodec && enable cuda
6770
6771 enabled nvenc &&
6772     test_cc -I$source_path <<EOF || disable nvenc
6773 #include <ffnvcodec/nvEncodeAPI.h>
6774 NV_ENCODE_API_FUNCTION_LIST flist;
6775 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6776 int main(void) { return 0; }
6777 EOF
6778
6779 if enabled_any nvdec cuvid; then
6780     check_type "ffnvcodec/dynlink_cuda.h ffnvcodec/dynlink_cuviddec.h" "CUVIDAV1PICPARAMS"
6781 fi
6782
6783 enabled amf &&
6784     check_cpp_condition amf "AMF/core/Version.h" \
6785         "(AMF_VERSION_MAJOR << 48 | AMF_VERSION_MINOR << 32 | AMF_VERSION_RELEASE << 16 | AMF_VERSION_BUILD_NUM) >= 0x0001000400090000"
6786
6787 # Funny iconv installations are not unusual, so check it after all flags have been set
6788 if enabled libc_iconv; then
6789     check_func_headers iconv.h iconv
6790 elif enabled iconv; then
6791     check_func_headers iconv.h iconv || check_lib iconv iconv.h iconv -liconv
6792 fi
6793
6794 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6795
6796 # add some useful compiler flags if supported
6797 check_cflags -Wdeclaration-after-statement
6798 check_cflags -Wall
6799 check_cflags -Wdisabled-optimization
6800 check_cflags -Wpointer-arith
6801 check_cflags -Wredundant-decls
6802 check_cflags -Wwrite-strings
6803 check_cflags -Wtype-limits
6804 check_cflags -Wundef
6805 check_cflags -Wmissing-prototypes
6806 check_cflags -Wno-pointer-to-int-cast
6807 check_cflags -Wstrict-prototypes
6808 check_cflags -Wempty-body
6809
6810 if enabled extra_warnings; then
6811     check_cflags -Wcast-qual
6812     check_cflags -Wextra
6813     check_cflags -Wpedantic
6814 fi
6815
6816 check_disable_warning(){
6817     warning_flag=-W${1#-Wno-}
6818     test_cflags $unknown_warning_flags $warning_flag && add_cflags $1
6819 }
6820
6821 test_cflags -Werror=unused-command-line-argument &&
6822     append unknown_warning_flags "-Werror=unused-command-line-argument"
6823 test_cflags -Werror=unknown-warning-option &&
6824     append unknown_warning_flags "-Werror=unknown-warning-option"
6825
6826 check_disable_warning -Wno-parentheses
6827 check_disable_warning -Wno-switch
6828 check_disable_warning -Wno-format-zero-length
6829 check_disable_warning -Wno-pointer-sign
6830 check_disable_warning -Wno-unused-const-variable
6831 check_disable_warning -Wno-bool-operation
6832 check_disable_warning -Wno-char-subscripts
6833
6834 check_disable_warning_headers(){
6835     warning_flag=-W${1#-Wno-}
6836     test_cflags $warning_flag && add_cflags_headers $1
6837 }
6838
6839 check_disable_warning_headers -Wno-deprecated-declarations
6840 check_disable_warning_headers -Wno-unused-variable
6841
6842 test_cc <<EOF && enable blocks_extension
6843 void (^block)(void);
6844 EOF
6845
6846 # add some linker flags
6847 check_ldflags -Wl,--warn-common
6848 check_ldflags -Wl,-rpath-link=:libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6849 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir && add_ldsoflags -Wl,-rpath,$libdir
6850 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6851
6852 # add some strip flags
6853 check_stripflags -x
6854
6855 enabled neon_clobber_test &&
6856     check_ldflags -Wl,--wrap,avcodec_open2              \
6857                   -Wl,--wrap,avcodec_decode_subtitle2   \
6858                   -Wl,--wrap,avcodec_encode_subtitle    \
6859                   -Wl,--wrap,avcodec_send_packet        \
6860                   -Wl,--wrap,avcodec_receive_packet     \
6861                   -Wl,--wrap,avcodec_send_frame         \
6862                   -Wl,--wrap,avcodec_receive_frame      \
6863                   -Wl,--wrap,swr_convert                \
6864                   -Wl,--wrap,avresample_convert ||
6865     disable neon_clobber_test
6866
6867 enabled xmm_clobber_test &&
6868     check_ldflags -Wl,--wrap,avcodec_open2              \
6869                   -Wl,--wrap,avcodec_decode_subtitle2   \
6870                   -Wl,--wrap,avcodec_encode_subtitle    \
6871                   -Wl,--wrap,avcodec_send_packet        \
6872                   -Wl,--wrap,avcodec_receive_packet     \
6873                   -Wl,--wrap,avcodec_send_frame         \
6874                   -Wl,--wrap,avcodec_receive_frame      \
6875                   -Wl,--wrap,swr_convert                \
6876                   -Wl,--wrap,avresample_convert         \
6877                   -Wl,--wrap,sws_scale ||
6878     disable xmm_clobber_test
6879
6880 check_ld "cc" proper_dce <<EOF
6881 extern const int array[512];
6882 static inline int func(void) { return array[0]; }
6883 int main(void) { return 0; }
6884 EOF
6885
6886 if enabled proper_dce; then
6887     echo "X { local: *; };" > $TMPV
6888     if test_ldflags -Wl,${version_script},$TMPV; then
6889         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6890         quotes='""'
6891         test_cc <<EOF && enable symver_asm_label
6892 void ff_foo(void) __asm__ ("av_foo@VERSION");
6893 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6894 EOF
6895         test_cc <<EOF && enable symver_gnu_asm
6896 __asm__(".symver ff_foo,av_foo@VERSION");
6897 void ff_foo(void) {}
6898 EOF
6899     fi
6900 fi
6901
6902 if [ -z "$optflags" ]; then
6903     if enabled small; then
6904         optflags=$cflags_size
6905     elif enabled optimizations; then
6906         optflags=$cflags_speed
6907     else
6908         optflags=$cflags_noopt
6909     fi
6910 fi
6911
6912 check_optflags(){
6913     check_cflags "$@"
6914     enabled lto && check_ldflags "$@"
6915 }
6916
6917 check_optflags $optflags
6918 check_optflags -fno-math-errno
6919 check_optflags -fno-signed-zeros
6920
6921 if enabled lto; then
6922     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6923     check_cflags  -flto
6924     check_ldflags -flto $cpuflags
6925     disable inline_asm_direct_symbol_refs
6926 fi
6927
6928 enabled ftrapv && check_cflags -ftrapv
6929
6930 test_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6931 int x;
6932 EOF
6933
6934
6935 if enabled icc; then
6936     # Just warnings, no remarks
6937     check_cflags -w1
6938     # -wd: Disable following warnings
6939     # 144, 167, 556: -Wno-pointer-sign
6940     # 188: enumerated type mixed with another type
6941     # 1292: attribute "foo" ignored
6942     # 1419: external declaration in primary source file
6943     # 10006: ignoring unknown option -fno-signed-zeros
6944     # 10148: ignoring unknown option -Wno-parentheses
6945     # 10156: ignoring option '-W'; no argument required
6946     # 13200: No EMMS instruction before call to function
6947     # 13203: No EMMS instruction before return from function
6948     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6949     # 11030: Warning unknown option --as-needed
6950     # 10156: ignoring option '-export'; no argument required
6951     check_ldflags -wd10156,11030
6952     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6953     enable ebp_available
6954     # The test above does not test linking
6955     enabled lto && disable symver_asm_label
6956     if enabled x86_32; then
6957         icc_version=$($cc -dumpversion)
6958         test ${icc_version%%.*} -ge 11 &&
6959             check_cflags -falign-stack=maintain-16-byte ||
6960             disable aligned_stack
6961     fi
6962 elif enabled gcc; then
6963     check_optflags -fno-tree-vectorize
6964     check_cflags -Werror=format-security
6965     check_cflags -Werror=implicit-function-declaration
6966     check_cflags -Werror=missing-prototypes
6967     check_cflags -Werror=return-type
6968     check_cflags -Werror=vla
6969     check_cflags -Wformat
6970     check_cflags -fdiagnostics-color=auto
6971     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6972     if enabled x86_32; then
6973         case $target_os in
6974         *bsd*)
6975             # BSDs don't guarantee a 16 byte aligned stack, but we can
6976             # request GCC to try to maintain 16 byte alignment throughout
6977             # function calls. Library entry points that might call assembly
6978             # functions align the stack. (The parameter means 2^4 bytes.)
6979             check_cflags -mpreferred-stack-boundary=4
6980             ;;
6981         esac
6982     fi
6983 elif enabled llvm_gcc; then
6984     check_cflags -mllvm -stack-alignment=16
6985 elif enabled clang; then
6986     if enabled x86_32; then
6987         # Clang doesn't support maintaining alignment without assuming the
6988         # same alignment in every function. If 16 byte alignment would be
6989         # enabled, one would also have to either add attribute_align_arg on
6990         # every single entry point into the libraries or enable -mstackrealign
6991         # (doing stack realignment in every single function).
6992         case $target_os in
6993         mingw32|win32|*bsd*)
6994             disable aligned_stack
6995             ;;
6996         *)
6997             check_cflags -mllvm -stack-alignment=16
6998             check_cflags -mstack-alignment=16
6999             ;;
7000         esac
7001     else
7002         check_cflags -mllvm -stack-alignment=16
7003         check_cflags -mstack-alignment=16
7004     fi
7005     check_cflags -Qunused-arguments
7006     check_cflags -Werror=implicit-function-declaration
7007     check_cflags -Werror=missing-prototypes
7008     check_cflags -Werror=return-type
7009 elif enabled cparser; then
7010     add_cflags -Wno-missing-variable-declarations
7011     add_cflags -Wno-empty-statement
7012 elif enabled armcc; then
7013     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
7014     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
7015     # 2523: use of inline assembly is deprecated
7016     add_cflags -W${armcc_opt},--diag_suppress=2523
7017     add_cflags -W${armcc_opt},--diag_suppress=1207
7018     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
7019     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
7020     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
7021     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
7022 elif enabled pathscale; then
7023     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
7024     disable inline_asm
7025 elif enabled_any msvc icl; then
7026     enabled x86_32 && disable aligned_stack
7027     enabled_all x86_32 debug && add_cflags -Oy-
7028     enabled debug && add_ldflags -debug
7029     enable pragma_deprecated
7030     if enabled icl; then
7031         # -Qansi-alias is basically -fstrict-aliasing, but does not work
7032         # (correctly) on icl 13.x.
7033         test_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
7034             add_cflags -Qansi-alias
7035         # Some inline asm is not compilable in debug
7036         if enabled debug; then
7037             disable ebp_available
7038             disable ebx_available
7039         fi
7040     fi
7041     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
7042     check_cpp_condition log2 crtversion.h "_VC_CRT_MAJOR_VERSION >= 12"
7043     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
7044     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
7045     # (as it ends up if the restrict redefine is done before including stdlib.h), while
7046     # MSVC 2013 and newer can handle it fine.
7047     # If this declspec fails, force including stdlib.h before the restrict redefinition
7048     # happens in config.h.
7049     if [ $restrict_keyword != restrict ]; then
7050         test_cc <<EOF || add_cflags -FIstdlib.h
7051 __declspec($restrict_keyword) void *foo(int);
7052 EOF
7053     fi
7054     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
7055     # Issue has been fixed in MSVC v19.00.24218.
7056     test_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
7057         check_cflags -d2SSAOptimizer-
7058     # enable utf-8 source processing on VS2015 U2 and newer
7059     test_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
7060         add_cflags -utf-8
7061 fi
7062
7063 for pfx in "" host_; do
7064     varname=${pfx%_}cc_type
7065     eval "type=\$$varname"
7066     if [ "$type" = "msvc" ]; then
7067         test_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
7068 static inline int foo(int a) { return a; }
7069 EOF
7070     fi
7071 done
7072
7073 case $as_type in
7074     clang)
7075         add_asflags -Qunused-arguments
7076     ;;
7077 esac
7078
7079 case $ld_type in
7080     clang)
7081         check_ldflags -Qunused-arguments
7082     ;;
7083 esac
7084
7085 enable frame_thread_encoder
7086
7087 # these filters depend on removed avcodec APIs
7088 # they are kept disabled for now, but will be removed if
7089 # nobody updates and re-enables them
7090 disable mcdeint_filter
7091 disable uspp_filter
7092
7093 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
7094
7095 check_deps $CONFIG_LIST       \
7096            $CONFIG_EXTRA      \
7097            $HAVE_LIST         \
7098            $ALL_COMPONENTS    \
7099
7100 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"
7101 enabled avresample && warn "Building with deprecated library libavresample"
7102
7103 case $target_os in
7104 haiku)
7105     disable memalign
7106     disable posix_memalign
7107     ;;
7108 *-dos|freedos|opendos)
7109     if test_cpp_condition sys/version.h "defined(__DJGPP__) && __DJGPP__ == 2 && __DJGPP_MINOR__ == 5"; then
7110         disable memalign
7111     fi
7112     ;;
7113 esac
7114
7115 flatten_extralibs(){
7116     nested_entries=
7117     list_name=$1
7118     eval list=\$${1}
7119     for entry in $list; do
7120         entry_copy=$entry
7121         resolve entry_copy
7122         flat_entries=
7123         for e in $entry_copy; do
7124             case $e in
7125                 *_extralibs) nested_entries="$nested_entries$e ";;
7126                           *) flat_entries="$flat_entries$e ";;
7127             esac
7128         done
7129         eval $entry="\$flat_entries"
7130     done
7131     append $list_name "$nested_entries"
7132
7133     resolve nested_entries
7134     if test -n "$(filter '*_extralibs' $nested_entries)"; then
7135         flatten_extralibs $list_name
7136     fi
7137 }
7138
7139 flatten_extralibs_wrapper(){
7140     list_name=$1
7141     flatten_extralibs $list_name
7142     unique $list_name
7143     resolve $list_name
7144     eval $list_name=\$\(\$ldflags_filter \$$list_name\)
7145     eval printf \''%s'\' \""\$$list_name"\"
7146 }
7147
7148 for linkunit in $LIBRARY_LIST; do
7149     unset current_extralibs
7150     eval components=\$$(toupper ${linkunit})_COMPONENTS_LIST
7151     for comp in ${components}; do
7152         enabled $comp || continue
7153         comp_extralibs="${comp}_extralibs"
7154         append current_extralibs $comp_extralibs
7155     done
7156     eval prepend ${linkunit}_extralibs $current_extralibs
7157 done
7158
7159 for linkunit in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
7160     eval ${linkunit}_extralibs=\$\(flatten_extralibs_wrapper ${linkunit}_extralibs\)
7161 done
7162
7163 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
7164
7165 for thread in $THREADS_LIST; do
7166     if enabled $thread; then
7167         test -n "$thread_type" &&
7168             die "ERROR: Only one thread type must be selected." ||
7169             thread_type="$thread"
7170     fi
7171 done
7172
7173 if disabled stdatomic; then
7174     if enabled atomics_gcc; then
7175         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
7176     elif enabled atomics_win32; then
7177         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
7178     elif enabled atomics_suncc; then
7179         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
7180     elif enabled pthreads; then
7181         add_compat atomics/pthread/stdatomic.o
7182         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
7183     else
7184         enabled threads && die "Threading is enabled, but no atomics are available"
7185         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
7186     fi
7187 fi
7188
7189 # Check if requested libraries were found.
7190 for lib in $AUTODETECT_LIBS; do
7191     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
7192 done
7193
7194 enabled zlib && add_cppflags -DZLIB_CONST
7195
7196 # conditional library dependencies, in any order
7197 enabled afftdn_filter       && prepend avfilter_deps "avcodec"
7198 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
7199 enabled afir_filter         && prepend avfilter_deps "avcodec"
7200 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
7201 enabled aresample_filter    && prepend avfilter_deps "swresample"
7202 enabled atempo_filter       && prepend avfilter_deps "avcodec"
7203 enabled bm3d_filter         && prepend avfilter_deps "avcodec"
7204 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
7205 enabled convolve_filter     && prepend avfilter_deps "avcodec"
7206 enabled deconvolve_filter   && prepend avfilter_deps "avcodec"
7207 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
7208 enabled elbg_filter         && prepend avfilter_deps "avcodec"
7209 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
7210 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
7211 enabled firequalizer_filter && prepend avfilter_deps "avcodec"
7212 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
7213 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
7214 enabled pan_filter          && prepend avfilter_deps "swresample"
7215 enabled pp_filter           && prepend avfilter_deps "postproc"
7216 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
7217 enabled resample_filter && prepend avfilter_deps "avresample"
7218 enabled sab_filter          && prepend avfilter_deps "swscale"
7219 enabled scale_filter    && prepend avfilter_deps "swscale"
7220 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
7221 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
7222 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
7223 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
7224 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
7225 enabled signature_filter    && prepend avfilter_deps "avcodec avformat"
7226 enabled smartblur_filter    && prepend avfilter_deps "swscale"
7227 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
7228 enabled spp_filter          && prepend avfilter_deps "avcodec"
7229 enabled sr_filter           && prepend avfilter_deps "avformat swscale"
7230 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
7231 enabled uspp_filter         && prepend avfilter_deps "avcodec"
7232 enabled zoompan_filter      && prepend avfilter_deps "swscale"
7233
7234 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
7235
7236 #FIXME
7237 enabled_any sdl2_outdev opengl_outdev && enabled sdl2 &&
7238     add_cflags $(filter_out '-Dmain=SDL_main' $sdl2_cflags)
7239
7240 enabled opus_decoder    && prepend avcodec_deps "swresample"
7241
7242 # reorder the items at var $1 to align with the items order at var $2 .
7243 # die if an item at $1 is not at $2 .
7244 reorder_by(){
7245     eval rb_in=\$$1
7246     eval rb_ordered=\$$2
7247
7248     for rb in $rb_in; do
7249         is_in $rb $rb_ordered || die "$rb at \$$1 is not at \$$2"
7250     done
7251
7252     rb_out=
7253     for rb in $rb_ordered; do
7254         is_in $rb $rb_in && rb_out="$rb_out$rb "
7255     done
7256     eval $1=\$rb_out
7257 }
7258
7259 # deps-expand fflib $1:  N x {append all expanded deps; unique}
7260 # within a set of N items, N expansions are enough to expose a cycle.
7261 expand_deps(){
7262     unique ${1}_deps  # required for the early break test.
7263     for dummy in $LIBRARY_LIST; do  # N iteratios
7264         eval deps=\$${1}_deps
7265         append ${1}_deps $(map 'eval echo \$${v}_deps' $deps)
7266         unique ${1}_deps
7267         eval '[ ${#deps} = ${#'${1}_deps'} ]' && break  # doesn't expand anymore
7268     done
7269
7270     eval is_in $1 \$${1}_deps && die "Dependency cycle at ${1}_deps"
7271     reorder_by ${1}_deps LIBRARY_LIST  # linking order is expected later
7272 }
7273
7274 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
7275 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
7276
7277 map 'expand_deps $v' $LIBRARY_LIST
7278
7279 if test "$quiet" != "yes"; then
7280
7281 echo "install prefix            $prefix"
7282 echo "source path               $source_path"
7283 echo "C compiler                $cc"
7284 echo "C library                 $libc_type"
7285 if test "$host_cc" != "$cc"; then
7286     echo "host C compiler           $host_cc"
7287     echo "host C library            $host_libc_type"
7288 fi
7289 echo "ARCH                      $arch ($cpu)"
7290 if test "$build_suffix" != ""; then
7291     echo "build suffix              $build_suffix"
7292 fi
7293 if test "$progs_suffix" != ""; then
7294     echo "progs suffix              $progs_suffix"
7295 fi
7296 if test "$extra_version" != ""; then
7297     echo "version string suffix     $extra_version"
7298 fi
7299 echo "big-endian                ${bigendian-no}"
7300 echo "runtime cpu detection     ${runtime_cpudetect-no}"
7301 if enabled x86; then
7302     echo "standalone assembly       ${x86asm-no}"
7303     echo "x86 assembler             ${x86asmexe}"
7304     echo "MMX enabled               ${mmx-no}"
7305     echo "MMXEXT enabled            ${mmxext-no}"
7306     echo "3DNow! enabled            ${amd3dnow-no}"
7307     echo "3DNow! extended enabled   ${amd3dnowext-no}"
7308     echo "SSE enabled               ${sse-no}"
7309     echo "SSSE3 enabled             ${ssse3-no}"
7310     echo "AESNI enabled             ${aesni-no}"
7311     echo "AVX enabled               ${avx-no}"
7312     echo "AVX2 enabled              ${avx2-no}"
7313     echo "AVX-512 enabled           ${avx512-no}"
7314     echo "XOP enabled               ${xop-no}"
7315     echo "FMA3 enabled              ${fma3-no}"
7316     echo "FMA4 enabled              ${fma4-no}"
7317     echo "i686 features enabled     ${i686-no}"
7318     echo "CMOV is fast              ${fast_cmov-no}"
7319     echo "EBX available             ${ebx_available-no}"
7320     echo "EBP available             ${ebp_available-no}"
7321 fi
7322 if enabled aarch64; then
7323     echo "NEON enabled              ${neon-no}"
7324     echo "VFP enabled               ${vfp-no}"
7325 fi
7326 if enabled arm; then
7327     echo "ARMv5TE enabled           ${armv5te-no}"
7328     echo "ARMv6 enabled             ${armv6-no}"
7329     echo "ARMv6T2 enabled           ${armv6t2-no}"
7330     echo "VFP enabled               ${vfp-no}"
7331     echo "NEON enabled              ${neon-no}"
7332     echo "THUMB enabled             ${thumb-no}"
7333 fi
7334 if enabled mips; then
7335     echo "MIPS FPU enabled          ${mipsfpu-no}"
7336     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
7337     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
7338     echo "MIPS MSA enabled          ${msa-no}"
7339     echo "MIPS MSA2 enabled         ${msa2-no}"
7340     echo "LOONGSON MMI enabled      ${mmi-no}"
7341 fi
7342 if enabled ppc; then
7343     echo "AltiVec enabled           ${altivec-no}"
7344     echo "VSX enabled               ${vsx-no}"
7345     echo "POWER8 enabled            ${power8-no}"
7346     echo "PPC 4xx optimizations     ${ppc4xx-no}"
7347     echo "dcbzl available           ${dcbzl-no}"
7348 fi
7349 echo "debug symbols             ${debug-no}"
7350 echo "strip symbols             ${stripping-no}"
7351 echo "optimize for size         ${small-no}"
7352 echo "optimizations             ${optimizations-no}"
7353 echo "static                    ${static-no}"
7354 echo "shared                    ${shared-no}"
7355 echo "postprocessing support    ${postproc-no}"
7356 echo "network support           ${network-no}"
7357 echo "threading support         ${thread_type-no}"
7358 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
7359 echo "texi2html enabled         ${texi2html-no}"
7360 echo "perl enabled              ${perl-no}"
7361 echo "pod2man enabled           ${pod2man-no}"
7362 echo "makeinfo enabled          ${makeinfo-no}"
7363 echo "makeinfo supports HTML    ${makeinfo_html-no}"
7364 test -n "$random_seed" &&
7365     echo "random seed               ${random_seed}"
7366 echo
7367
7368 echo "External libraries:"
7369 print_enabled '' $EXTERNAL_LIBRARY_LIST $EXTERNAL_AUTODETECT_LIBRARY_LIST | print_in_columns
7370 echo
7371
7372 echo "External libraries providing hardware acceleration:"
7373 print_enabled '' $HWACCEL_LIBRARY_LIST $HWACCEL_AUTODETECT_LIBRARY_LIST | print_in_columns
7374 echo
7375
7376 echo "Libraries:"
7377 print_enabled '' $LIBRARY_LIST | print_in_columns
7378 echo
7379
7380 echo "Programs:"
7381 print_enabled '' $PROGRAM_LIST | print_in_columns
7382 echo
7383
7384 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
7385     echo "Enabled ${type}s:"
7386     eval list=\$$(toupper $type)_LIST
7387     print_enabled '_*' $list | print_in_columns
7388     echo
7389 done
7390
7391 if test -n "$ignore_tests"; then
7392     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
7393     echo "Ignored FATE tests:"
7394     echo $ignore_tests | print_in_columns
7395     echo
7396 fi
7397
7398 echo "License: $license"
7399
7400 fi # test "$quiet" != "yes"
7401
7402 if test -n "$WARN_IF_GETS_DISABLED_LIST"; then
7403     for cfg in $WARN_IF_GETS_DISABLED_LIST; do
7404         if disabled $cfg; then
7405             varname=${cfg}_disable_reason
7406             eval "warn \"Disabled $cfg because \$$varname\""
7407         fi
7408     done
7409 fi
7410
7411 if test -n "$WARNINGS"; then
7412     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
7413     enabled fatal_warnings && exit 1
7414 fi
7415
7416 test -e Makefile || echo "include $source_path/Makefile" > Makefile
7417
7418 esc(){
7419     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
7420 }
7421
7422 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" > ffbuild/config.fate
7423
7424 enabled stripping || strip="echo skipping strip"
7425 enabled stripping || striptype=""
7426
7427 config_files="$TMPH ffbuild/config.mak doc/config.texi"
7428
7429 cat > ffbuild/config.mak <<EOF
7430 # Automatically generated by configure - do not modify!
7431 ifndef FFMPEG_CONFIG_MAK
7432 FFMPEG_CONFIG_MAK=1
7433 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
7434 prefix=$prefix
7435 LIBDIR=\$(DESTDIR)$libdir
7436 SHLIBDIR=\$(DESTDIR)$shlibdir
7437 INCDIR=\$(DESTDIR)$incdir
7438 BINDIR=\$(DESTDIR)$bindir
7439 DATADIR=\$(DESTDIR)$datadir
7440 DOCDIR=\$(DESTDIR)$docdir
7441 MANDIR=\$(DESTDIR)$mandir
7442 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
7443 INSTALL_NAME_DIR=$install_name_dir
7444 SRC_PATH=$source_path
7445 SRC_LINK=$source_link
7446 ifndef MAIN_MAKEFILE
7447 SRC_PATH:=\$(SRC_PATH:.%=..%)
7448 endif
7449 CC_IDENT=$cc_ident
7450 ARCH=$arch
7451 INTRINSICS=$intrinsics
7452 EXTERN_PREFIX=$extern_prefix
7453 CC=$cc
7454 CXX=$cxx
7455 AS=$as
7456 OBJCC=$objcc
7457 LD=$ld
7458 DEPCC=$dep_cc
7459 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
7460 DEPAS=$as
7461 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
7462 X86ASM=$x86asmexe
7463 DEPX86ASM=$x86asmexe
7464 DEPX86ASMFLAGS=\$(X86ASMFLAGS)
7465 AR=$ar
7466 ARFLAGS=$arflags
7467 AR_O=$ar_o
7468 AR_CMD=$ar
7469 NM_CMD=$nm
7470 RANLIB=$ranlib
7471 STRIP=$strip
7472 STRIPTYPE=$striptype
7473 NVCC=$nvcc
7474 CP=cp -p
7475 LN_S=$ln_s
7476 CPPFLAGS=$CPPFLAGS
7477 CFLAGS=$CFLAGS
7478 CXXFLAGS=$CXXFLAGS
7479 OBJCFLAGS=$OBJCFLAGS
7480 ASFLAGS=$ASFLAGS
7481 NVCCFLAGS=$nvccflags
7482 AS_C=$AS_C
7483 AS_O=$AS_O
7484 OBJCC_C=$OBJCC_C
7485 OBJCC_E=$OBJCC_E
7486 OBJCC_O=$OBJCC_O
7487 CC_C=$CC_C
7488 CC_E=$CC_E
7489 CC_O=$CC_O
7490 CXX_C=$CXX_C
7491 CXX_O=$CXX_O
7492 NVCC_C=$NVCC_C
7493 NVCC_O=$NVCC_O
7494 LD_O=$LD_O
7495 X86ASM_O=$X86ASM_O
7496 LD_LIB=$LD_LIB
7497 LD_PATH=$LD_PATH
7498 DLLTOOL=$dlltool
7499 WINDRES=$windres
7500 DEPWINDRES=$dep_cc
7501 DOXYGEN=$doxygen
7502 LDFLAGS=$LDFLAGS
7503 LDEXEFLAGS=$LDEXEFLAGS
7504 LDSOFLAGS=$LDSOFLAGS
7505 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
7506 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
7507 X86ASMFLAGS=$X86ASMFLAGS
7508 MSAFLAGS=$MSAFLAGS
7509 MMIFLAGS=$MMIFLAGS
7510 BUILDSUF=$build_suffix
7511 PROGSSUF=$progs_suffix
7512 FULLNAME=$FULLNAME
7513 LIBPREF=$LIBPREF
7514 LIBSUF=$LIBSUF
7515 LIBNAME=$LIBNAME
7516 SLIBPREF=$SLIBPREF
7517 SLIBSUF=$SLIBSUF
7518 EXESUF=$EXESUF
7519 EXTRA_VERSION=$extra_version
7520 CCDEP=$CCDEP
7521 CXXDEP=$CXXDEP
7522 CCDEP_FLAGS=$CCDEP_FLAGS
7523 ASDEP=$ASDEP
7524 ASDEP_FLAGS=$ASDEP_FLAGS
7525 X86ASMDEP=$X86ASMDEP
7526 X86ASMDEP_FLAGS=$X86ASMDEP_FLAGS
7527 CC_DEPFLAGS=$CC_DEPFLAGS
7528 AS_DEPFLAGS=$AS_DEPFLAGS
7529 X86ASM_DEPFLAGS=$X86ASM_DEPFLAGS
7530 HOSTCC=$host_cc
7531 HOSTLD=$host_ld
7532 HOSTCFLAGS=$host_cflags
7533 HOSTCPPFLAGS=$host_cppflags
7534 HOSTEXESUF=$HOSTEXESUF
7535 HOSTLDFLAGS=$host_ldflags
7536 HOSTEXTRALIBS=$host_extralibs
7537 DEPHOSTCC=$host_cc
7538 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
7539 HOSTCCDEP=$HOSTCCDEP
7540 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
7541 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
7542 HOSTCC_C=$HOSTCC_C
7543 HOSTCC_O=$HOSTCC_O
7544 HOSTLD_O=$HOSTLD_O
7545 TARGET_EXEC=$target_exec $target_exec_args
7546 TARGET_PATH=$target_path
7547 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
7548 CFLAGS-ffplay=${sdl2_cflags}
7549 CFLAGS_HEADERS=$CFLAGS_HEADERS
7550 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
7551 EXTRALIBS=$extralibs
7552 COMPAT_OBJS=$compat_objs
7553 INSTALL=$install
7554 LIBTARGET=${LIBTARGET}
7555 SLIBNAME=${SLIBNAME}
7556 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
7557 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
7558 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
7559 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
7560 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
7561 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
7562 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
7563 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
7564 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
7565 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
7566 NOREDZONE_FLAGS=$noredzone_flags
7567 LIBFUZZER_PATH=$libfuzzer_path
7568 IGNORE_TESTS=$ignore_tests
7569 EOF
7570
7571 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> ffbuild/config.mak' $LIBRARY_LIST
7572
7573 for entry in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
7574     eval echo "EXTRALIBS-${entry}=\$${entry}_extralibs" >> ffbuild/config.mak
7575 done
7576
7577 cat > $TMPH <<EOF
7578 /* Automatically generated by configure - do not modify! */
7579 #ifndef FFMPEG_CONFIG_H
7580 #define FFMPEG_CONFIG_H
7581 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
7582 #define FFMPEG_LICENSE "$(c_escape $license)"
7583 #define CONFIG_THIS_YEAR 2021
7584 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
7585 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
7586 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
7587 #define OS_NAME $target_os
7588 #define av_restrict $restrict_keyword
7589 #define EXTERN_PREFIX "${extern_prefix}"
7590 #define EXTERN_ASM ${extern_prefix}
7591 #define BUILDSUF "$build_suffix"
7592 #define SLIBSUF "$SLIBSUF"
7593 #define HAVE_MMX2 HAVE_MMXEXT
7594 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
7595 EOF
7596
7597 test -n "$assert_level" &&
7598     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
7599
7600 test -n "$malloc_prefix" &&
7601     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
7602
7603 if enabled x86asm; then
7604     append config_files $TMPASM
7605     cat > $TMPASM <<EOF
7606 ; Automatically generated by configure - do not modify!
7607 EOF
7608 fi
7609
7610 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
7611
7612
7613 mkdir -p doc
7614 mkdir -p tests
7615 mkdir -p tests/api
7616 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
7617
7618 print_config ARCH_   "$config_files" $ARCH_LIST
7619 print_config HAVE_   "$config_files" $HAVE_LIST
7620 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
7621                                      $CONFIG_EXTRA      \
7622                                      $ALL_COMPONENTS    \
7623
7624 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
7625 echo "endif # FFMPEG_CONFIG_MAK" >> ffbuild/config.mak
7626
7627 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
7628 cp_if_changed $TMPH config.h
7629 touch ffbuild/.config
7630
7631 enabled x86asm && cp_if_changed $TMPASM config.asm
7632
7633 cat > $TMPH <<EOF
7634 /* Generated by ffmpeg configure */
7635 #ifndef AVUTIL_AVCONFIG_H
7636 #define AVUTIL_AVCONFIG_H
7637 EOF
7638
7639 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
7640
7641 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
7642
7643 cp_if_changed $TMPH libavutil/avconfig.h
7644
7645 # full_filter_name_foo=vf_foo
7646 # full_filter_name_bar=asrc_bar
7647 # ...
7648 eval "$(sed -n "s/^extern AVFilter ff_\([avfsinkrc]\{2,5\}\)_\(.*\);/full_filter_name_\2=\1_\2/p" $source_path/libavfilter/allfilters.c)"
7649
7650 # generate the lists of enabled components
7651 print_enabled_components(){
7652     file=$1
7653     struct_name=$2
7654     name=$3
7655     shift 3
7656     echo "static const $struct_name * const $name[] = {" > $TMPH
7657     for c in $*; do
7658         if enabled $c; then
7659             case $name in
7660                 filter_list)
7661                     eval c=\$full_filter_name_${c%_filter}
7662                 ;;
7663                 indev_list)
7664                     c=${c%_indev}_demuxer
7665                 ;;
7666                 outdev_list)
7667                     c=${c%_outdev}_muxer
7668                 ;;
7669             esac
7670             printf "    &ff_%s,\n" $c >> $TMPH
7671         fi
7672     done
7673     if [ "$name" = "filter_list" ]; then
7674         for c in asrc_abuffer vsrc_buffer asink_abuffer vsink_buffer; do
7675             printf "    &ff_%s,\n" $c >> $TMPH
7676         done
7677     fi
7678     echo "    NULL };" >> $TMPH
7679     cp_if_changed $TMPH $file
7680 }
7681
7682 print_enabled_components libavfilter/filter_list.c AVFilter filter_list $FILTER_LIST
7683 print_enabled_components libavcodec/codec_list.c AVCodec codec_list $CODEC_LIST
7684 print_enabled_components libavcodec/parser_list.c AVCodecParser parser_list $PARSER_LIST
7685 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
7686 print_enabled_components libavformat/demuxer_list.c AVInputFormat demuxer_list $DEMUXER_LIST
7687 print_enabled_components libavformat/muxer_list.c AVOutputFormat muxer_list $MUXER_LIST
7688 print_enabled_components libavdevice/indev_list.c AVInputFormat indev_list $INDEV_LIST
7689 print_enabled_components libavdevice/outdev_list.c AVOutputFormat outdev_list $OUTDEV_LIST
7690 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
7691
7692 # Settings for pkg-config files
7693
7694 cat > $TMPH <<EOF
7695 # Automatically generated by configure - do not modify!
7696 shared=$shared
7697 build_suffix=$build_suffix
7698 prefix=$prefix
7699 libdir=$libdir
7700 incdir=$incdir
7701 rpath=$(enabled rpath && echo "-Wl,-rpath,\${libdir}")
7702 source_path=${source_path}
7703 LIBPREF=${LIBPREF}
7704 LIBSUF=${LIBSUF}
7705 extralibs_avutil="$avutil_extralibs"
7706 extralibs_avcodec="$avcodec_extralibs"
7707 extralibs_avformat="$avformat_extralibs"
7708 extralibs_avdevice="$avdevice_extralibs"
7709 extralibs_avfilter="$avfilter_extralibs"
7710 extralibs_avresample="$avresample_extralibs"
7711 extralibs_postproc="$postproc_extralibs"
7712 extralibs_swscale="$swscale_extralibs"
7713 extralibs_swresample="$swresample_extralibs"
7714 EOF
7715
7716 for lib in $LIBRARY_LIST; do
7717     lib_deps="$(eval echo \$${lib}_deps)"
7718     echo ${lib}_deps=\"$lib_deps\" >> $TMPH
7719 done
7720
7721 cp_if_changed $TMPH ffbuild/config.sh