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-librsvg         enable SVG rasterization via librsvg [no]
 263   --enable-librubberband   enable rubberband needed for rubberband filter [no]
 264   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 265   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 266   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
 267   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
 268   --enable-libsoxr         enable Include libsoxr resampling [no]
 269   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 270   --enable-libsrt          enable Haivision SRT protocol via libsrt [no]
 271   --enable-libssh          enable SFTP protocol via libssh [no]
 272   --enable-libsvtav1       enable AV1 encoding via SVT [no]
 273   --enable-libtensorflow   enable TensorFlow as a DNN module backend
 274                            for DNN based filters like sr [no]
 275   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
 276   --enable-libtheora       enable Theora encoding via libtheora [no]
 277   --enable-libtls          enable LibreSSL (via libtls), needed for https support
 278                            if openssl, gnutls or mbedtls is not used [no]
 279   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 280   --enable-libuavs3d       enable AVS3 decoding via libuavs3d [no]
 281   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 282   --enable-libvidstab      enable video stabilization using vid.stab [no]
 283   --enable-libvmaf         enable vmaf filter via libvmaf [no]
 284   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 285   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 286                            native implementation exists [no]
 287   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 288   --enable-libwebp         enable WebP encoding via libwebp [no]
 289   --enable-libx264         enable H.264 encoding via x264 [no]
 290   --enable-libx265         enable HEVC encoding via x265 [no]
 291   --enable-libxavs         enable AVS encoding via xavs [no]
 292   --enable-libxavs2        enable AVS2 encoding via xavs2 [no]
 293   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
 294   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
 295   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
 296   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
 297   --enable-libxvid         enable Xvid encoding via xvidcore,
 298                            native MPEG-4/Xvid encoder exists [no]
 299   --enable-libxml2         enable XML parsing using the C library libxml2, needed
 300                            for dash demuxing support [no]
 301   --enable-libzimg         enable z.lib, needed for zscale filter [no]
 302   --enable-libzmq          enable message passing via libzmq [no]
 303   --enable-libzvbi         enable teletext support via libzvbi [no]
 304   --enable-lv2             enable LV2 audio filtering [no]
 305   --disable-lzma           disable lzma [autodetect]
 306   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
 307   --enable-mbedtls         enable mbedTLS, needed for https support
 308                            if openssl, gnutls or libtls is not used [no]
 309   --enable-mediacodec      enable Android MediaCodec support [no]
 310   --enable-mediafoundation enable encoding via MediaFoundation [auto]
 311   --enable-libmysofa       enable libmysofa, needed for sofalizer filter [no]
 312   --enable-openal          enable OpenAL 1.1 capture support [no]
 313   --enable-opencl          enable OpenCL processing [no]
 314   --enable-opengl          enable OpenGL rendering [no]
 315   --enable-openssl         enable openssl, needed for https support
 316                            if gnutls, libtls or mbedtls is not used [no]
 317   --enable-pocketsphinx    enable PocketSphinx, needed for asr filter [no]
 318   --disable-sndio          disable sndio support [autodetect]
 319   --disable-schannel       disable SChannel SSP, needed for TLS support on
 320                            Windows if openssl and gnutls are not used [autodetect]
 321   --disable-sdl2           disable sdl2 [autodetect]
 322   --disable-securetransport disable Secure Transport, needed for TLS support
 323                            on OSX if openssl and gnutls are not used [autodetect]
 324   --enable-vapoursynth     enable VapourSynth demuxer [no]
 325   --enable-vulkan          enable Vulkan code [no]
 326   --disable-xlib           disable xlib [autodetect]
 327   --disable-zlib           disable zlib [autodetect]
 328
 329   The following libraries provide various hardware acceleration features:
 330   --disable-amf            disable AMF video encoding code [autodetect]
 331   --disable-audiotoolbox   disable Apple AudioToolbox code [autodetect]
 332   --enable-cuda-nvcc       enable Nvidia CUDA compiler [no]
 333   --disable-cuda-llvm      disable CUDA compilation using clang [autodetect]
 334   --disable-cuvid          disable Nvidia CUVID support [autodetect]
 335   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
 336   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
 337   --disable-ffnvcodec      disable dynamically linked Nvidia code [autodetect]
 338   --enable-libdrm          enable DRM code (Linux) [no]
 339   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
 340   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
 341   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
 342   --disable-nvdec          disable Nvidia video decoding acceleration (via hwaccel) [autodetect]
 343   --disable-nvenc          disable Nvidia video encoding code [autodetect]
 344   --enable-omx             enable OpenMAX IL code [no]
 345   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
 346   --enable-rkmpp           enable Rockchip Media Process Platform code [no]
 347   --disable-v4l2-m2m       disable V4L2 mem2mem code [autodetect]
 348   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
 349   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
 350   --disable-videotoolbox   disable VideoToolbox code [autodetect]
 351
 352 Toolchain options:
 353   --arch=ARCH              select architecture [$arch]
 354   --cpu=CPU                select the minimum required CPU (affects
 355                            instruction selection, may crash on older CPUs)
 356   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 357   --progs-suffix=SUFFIX    program name suffix []
 358   --enable-cross-compile   assume a cross-compiler is used
 359   --sysroot=PATH           root of cross-build tree
 360   --sysinclude=PATH        location of cross-build system headers
 361   --target-os=OS           compiler targets OS [$target_os]
 362   --target-exec=CMD        command to run executables on target
 363   --target-path=DIR        path to view of build directory on target
 364   --target-samples=DIR     path to samples directory on target
 365   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 366   --toolchain=NAME         set tool defaults according to NAME
 367                            (gcc-asan, clang-asan, gcc-msan, clang-msan,
 368                            gcc-tsan, clang-tsan, gcc-usan, clang-usan,
 369                            valgrind-massif, valgrind-memcheck,
 370                            msvc, icl, gcov, llvm-cov, hardened)
 371   --nm=NM                  use nm tool NM [$nm_default]
 372   --ar=AR                  use archive tool AR [$ar_default]
 373   --as=AS                  use assembler AS [$as_default]
 374   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
 375   --strip=STRIP            use strip tool STRIP [$strip_default]
 376   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 377   --x86asmexe=EXE          use nasm-compatible assembler EXE [$x86asmexe_default]
 378   --cc=CC                  use C compiler CC [$cc_default]
 379   --cxx=CXX                use C compiler CXX [$cxx_default]
 380   --objcc=OCC              use ObjC compiler OCC [$cc_default]
 381   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 382   --nvcc=NVCC              use Nvidia CUDA compiler NVCC or clang [$nvcc_default]
 383   --ld=LD                  use linker LD [$ld_default]
 384   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 385   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 386   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 387   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
 388   --host-cc=HOSTCC         use host C compiler HOSTCC
 389   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 390   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 391   --host-ld=HOSTLD         use host linker HOSTLD
 392   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 393   --host-extralibs=HLIBS   use libs HLIBS when linking for host
 394   --host-os=OS             compiler host OS [$target_os]
 395   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 396   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 397   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
 398   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 399   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 400   --extra-ldsoflags=ELDFLAGS add ELDFLAGS to LDSOFLAGS [$LDSOFLAGS]
 401   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 402   --extra-version=STRING   version string suffix []
 403   --optflags=OPTFLAGS      override optimization-related compiler flags
 404   --nvccflags=NVCCFLAGS    override nvcc flags [$nvccflags_default]
 405   --build-suffix=SUFFIX    library name suffix []
 406   --enable-pic             build position-independent code
 407   --enable-thumb           compile for Thumb instruction set
 408   --enable-lto             use link-time optimization
 409   --env="ENV=override"     override the environment variables
 410
 411 Advanced options (experts only):
 412   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 413   --custom-allocator=NAME  use a supported custom allocator
 414   --disable-symver         disable symbol versioning
 415   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 416   --disable-safe-bitstream-reader
 417                            disable buffer boundary checking in bitreaders
 418                            (faster, but may crash)
 419   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
 420
 421 Optimization options (experts only):
 422   --disable-asm            disable all assembly optimizations
 423   --disable-altivec        disable AltiVec optimizations
 424   --disable-vsx            disable VSX optimizations
 425   --disable-power8         disable POWER8 optimizations
 426   --disable-amd3dnow       disable 3DNow! optimizations
 427   --disable-amd3dnowext    disable 3DNow! extended optimizations
 428   --disable-mmx            disable MMX optimizations
 429   --disable-mmxext         disable MMXEXT optimizations
 430   --disable-sse            disable SSE optimizations
 431   --disable-sse2           disable SSE2 optimizations
 432   --disable-sse3           disable SSE3 optimizations
 433   --disable-ssse3          disable SSSE3 optimizations
 434   --disable-sse4           disable SSE4 optimizations
 435   --disable-sse42          disable SSE4.2 optimizations
 436   --disable-avx            disable AVX optimizations
 437   --disable-xop            disable XOP optimizations
 438   --disable-fma3           disable FMA3 optimizations
 439   --disable-fma4           disable FMA4 optimizations
 440   --disable-avx2           disable AVX2 optimizations
 441   --disable-avx512         disable AVX-512 optimizations
 442   --disable-aesni          disable AESNI optimizations
 443   --disable-armv5te        disable armv5te optimizations
 444   --disable-armv6          disable armv6 optimizations
 445   --disable-armv6t2        disable armv6t2 optimizations
 446   --disable-vfp            disable VFP optimizations
 447   --disable-neon           disable NEON optimizations
 448   --disable-inline-asm     disable use of inline assembly
 449   --disable-x86asm         disable use of standalone x86 assembly
 450   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
 451   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 452   --disable-msa            disable MSA optimizations
 453   --disable-msa2           disable MSA2 optimizations
 454   --disable-mipsfpu        disable floating point MIPS optimizations
 455   --disable-mmi            disable Loongson SIMD optimizations
 456   --disable-fast-unaligned consider unaligned accesses slow
 457
 458 Developer options (useful when working on FFmpeg itself):
 459   --disable-debug          disable debugging symbols
 460   --enable-debug=LEVEL     set the debug level [$debuglevel]
 461   --disable-optimizations  disable compiler optimizations
 462   --enable-extra-warnings  enable more compiler warnings
 463   --disable-stripping      disable stripping of executables and shared libraries
 464   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 465                            2 causes a slowdown at runtime.
 466   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 467   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 468                            leaks and errors, using the specified valgrind binary.
 469                            Cannot be combined with --target-exec
 470   --enable-ftrapv          Trap arithmetic overflows
 471   --samples=PATH           location of test samples for FATE, if not set use
 472                            \$FATE_SAMPLES at make invocation time.
 473   --enable-neon-clobber-test check NEON registers for clobbering (should be
 474                            used only for debugging purposes)
 475   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 476                            should be used only for debugging purposes)
 477   --enable-random          randomly enable/disable components
 478   --disable-random
 479   --enable-random=LIST     randomly enable/disable specific components or
 480   --disable-random=LIST    component groups. LIST is a comma-separated list
 481                            of NAME[:PROB] entries where NAME is a component
 482                            (group) and PROB the probability associated with
 483                            NAME (default 0.5).
 484   --random-seed=VALUE      seed value for --enable/disable-random
 485   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 486                            (only applies to --disable-optimizations builds)
 487   --enable-ossfuzz         Enable building fuzzer tool
 488   --libfuzzer=PATH         path to libfuzzer
 489   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
 490                            in the name) of tests whose result is ignored
 491   --enable-linux-perf      enable Linux Performance Monitor API
 492   --disable-large-tests    disable tests that use a large amount of memory
 493
 494 NOTE: Object files are built at the place where configure is launched.
 495 EOF
 496   exit 0
 497 }
 498
 499 if test -t 1 && which tput >/dev/null 2>&1; then
 500     ncolors=$(tput colors)
 501     if test -n "$ncolors" && test $ncolors -ge 8; then
 502         bold_color=$(tput bold)
 503         warn_color=$(tput setaf 3)
 504         error_color=$(tput setaf 1)
 505         reset_color=$(tput sgr0)
 506     fi
 507     # 72 used instead of 80 since that's the default of pr
 508     ncols=$(tput cols)
 509 fi
 510 : ${ncols:=72}
 511
 512 log(){
 513     echo "$@" >> $logfile
 514 }
 515
 516 log_file(){
 517     log BEGIN "$1"
 518     log_file_i=1
 519     while IFS= read -r log_file_line; do
 520         printf '%5d\t%s\n' "$log_file_i" "$log_file_line"
 521         log_file_i=$(($log_file_i+1))
 522     done < "$1" >> "$logfile"
 523     log END "$1"
 524 }
 525
 526 warn(){
 527     log "WARNING: $*"
 528     WARNINGS="${WARNINGS}WARNING: $*\n"
 529 }
 530
 531 die(){
 532     log "$@"
 533     echo "$error_color$bold_color$@$reset_color"
 534     cat <<EOF
 535
 536 If you think configure made a mistake, make sure you are using the latest
 537 version from Git.  If the latest version fails, report the problem to the
 538 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 539 EOF
 540     if disabled logging; then
 541         cat <<EOF
 542 Rerun configure with logging enabled (do not use --disable-logging), and
 543 include the log this produces with your report.
 544 EOF
 545     else
 546         cat <<EOF
 547 Include the log file "$logfile" produced by configure as this will help
 548 solve the problem.
 549 EOF
 550     fi
 551     exit 1
 552 }
 553
 554 # Avoid locale weirdness, besides we really just want to translate ASCII.
 555 toupper(){
 556     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 557 }
 558
 559 tolower(){
 560     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 561 }
 562
 563 c_escape(){
 564     echo "$*" | sed 's/["\\]/\\\0/g'
 565 }
 566
 567 sh_quote(){
 568     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 569     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 570     echo "$v"
 571 }
 572
 573 cleanws(){
 574     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
 575 }
 576
 577 filter(){
 578     pat=$1
 579     shift
 580     for v; do
 581         eval "case '$v' in $pat) printf '%s ' '$v' ;; esac"
 582     done
 583 }
 584
 585 filter_out(){
 586     pat=$1
 587     shift
 588     for v; do
 589         eval "case '$v' in $pat) ;; *) printf '%s ' '$v' ;; esac"
 590     done
 591 }
 592
 593 map(){
 594     m=$1
 595     shift
 596     for v; do eval $m; done
 597 }
 598
 599 add_suffix(){
 600     suffix=$1
 601     shift
 602     for v; do echo ${v}${suffix}; done
 603 }
 604
 605 remove_suffix(){
 606     suffix=$1
 607     shift
 608     for v; do echo ${v%$suffix}; done
 609 }
 610
 611 set_all(){
 612     value=$1
 613     shift
 614     for var in $*; do
 615         eval $var=$value
 616     done
 617 }
 618
 619 set_weak(){
 620     value=$1
 621     shift
 622     for var; do
 623         eval : \${$var:=$value}
 624     done
 625 }
 626
 627 sanitize_var_name(){
 628     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 629 }
 630
 631 set_sanitized(){
 632     var=$1
 633     shift
 634     eval $(sanitize_var_name "$var")='$*'
 635 }
 636
 637 get_sanitized(){
 638     eval echo \$$(sanitize_var_name "$1")
 639 }
 640
 641 pushvar(){
 642     for pvar in $*; do
 643         eval level=\${${pvar}_level:=0}
 644         eval ${pvar}_${level}="\$$pvar"
 645         eval ${pvar}_level=$(($level+1))
 646     done
 647 }
 648
 649 popvar(){
 650     for pvar in $*; do
 651         eval level=\${${pvar}_level:-0}
 652         test $level = 0 && continue
 653         eval level=$(($level-1))
 654         eval $pvar="\${${pvar}_${level}}"
 655         eval ${pvar}_level=$level
 656         eval unset ${pvar}_${level}
 657     done
 658 }
 659
 660 request(){
 661     for var in $*; do
 662         eval ${var}_requested=yes
 663         eval $var=
 664     done
 665 }
 666
 667 warn_if_gets_disabled(){
 668     for var in $*; do
 669         WARN_IF_GETS_DISABLED_LIST="$WARN_IF_GETS_DISABLED_LIST $var"
 670     done
 671 }
 672
 673 enable(){
 674     set_all yes $*
 675 }
 676
 677 disable(){
 678     set_all no $*
 679 }
 680
 681 disable_with_reason(){
 682     disable $1
 683     eval "${1}_disable_reason=\"$2\""
 684     if requested $1; then
 685         die "ERROR: $1 requested, but $2"
 686     fi
 687 }
 688
 689 enable_weak(){
 690     set_weak yes $*
 691 }
 692
 693 disable_weak(){
 694     set_weak no $*
 695 }
 696
 697 enable_sanitized(){
 698     for var; do
 699         enable $(sanitize_var_name $var)
 700     done
 701 }
 702
 703 disable_sanitized(){
 704     for var; do
 705         disable $(sanitize_var_name $var)
 706     done
 707 }
 708
 709 do_enable_deep(){
 710     for var; do
 711         enabled $var && continue
 712         set -- $var
 713         eval enable_deep \$${var}_select
 714         var=$1
 715         eval enable_deep_weak \$${var}_suggest
 716     done
 717 }
 718
 719 enable_deep(){
 720     do_enable_deep $*
 721     enable $*
 722 }
 723
 724 enable_deep_weak(){
 725     for var; do
 726         disabled $var && continue
 727         set -- $var
 728         do_enable_deep $var
 729         var=$1
 730         enable_weak $var
 731     done
 732 }
 733
 734 requested(){
 735     test "${1#!}" = "$1" && op="=" || op="!="
 736     eval test "x\$${1#!}_requested" $op "xyes"
 737 }
 738
 739 enabled(){
 740     test "${1#!}" = "$1" && op="=" || op="!="
 741     eval test "x\$${1#!}" $op "xyes"
 742 }
 743
 744 disabled(){
 745     test "${1#!}" = "$1" && op="=" || op="!="
 746     eval test "x\$${1#!}" $op "xno"
 747 }
 748
 749 enabled_all(){
 750     for opt; do
 751         enabled $opt || return 1
 752     done
 753 }
 754
 755 disabled_all(){
 756     for opt; do
 757         disabled $opt || return 1
 758     done
 759 }
 760
 761 enabled_any(){
 762     for opt; do
 763         enabled $opt && return 0
 764     done
 765 }
 766
 767 disabled_any(){
 768     for opt; do
 769         disabled $opt && return 0
 770     done
 771     return 1
 772 }
 773
 774 set_default(){
 775     for opt; do
 776         eval : \${$opt:=\$${opt}_default}
 777     done
 778 }
 779
 780 is_in(){
 781     value=$1
 782     shift
 783     for var in $*; do
 784         [ $var = $value ] && return 0
 785     done
 786     return 1
 787 }
 788
 789 # The cfg loop is very hot (several thousands iterations), and in bash also
 790 # potentialy quite slow. Try to abort the iterations early, preferably without
 791 # calling functions. 70%+ of the time cfg is already done or without deps.
 792 check_deps(){
 793     for cfg; do
 794         eval [ x\$${cfg}_checking = xdone ] && continue
 795         eval [ x\$${cfg}_checking = xinprogress ] && die "Circular dependency for $cfg."
 796
 797         eval "
 798         dep_all=\$${cfg}_deps
 799         dep_any=\$${cfg}_deps_any
 800         dep_con=\$${cfg}_conflict
 801         dep_sel=\$${cfg}_select
 802         dep_sgs=\$${cfg}_suggest
 803         dep_ifa=\$${cfg}_if
 804         dep_ifn=\$${cfg}_if_any
 805         "
 806
 807         # most of the time here $cfg has no deps - avoid costly no-op work
 808         if [ "$dep_all$dep_any$dep_con$dep_sel$dep_sgs$dep_ifa$dep_ifn" ]; then
 809             eval ${cfg}_checking=inprogress
 810
 811             set -- $cfg "$dep_all" "$dep_any" "$dep_con" "$dep_sel" "$dep_sgs" "$dep_ifa" "$dep_ifn"
 812             check_deps $dep_all $dep_any $dep_con $dep_sel $dep_sgs $dep_ifa $dep_ifn
 813             cfg=$1; dep_all=$2; dep_any=$3; dep_con=$4; dep_sel=$5 dep_sgs=$6; dep_ifa=$7; dep_ifn=$8
 814
 815             [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 816             [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 817             enabled_all  $dep_all || { disable_with_reason $cfg "not all dependencies are satisfied: $dep_all"; }
 818             enabled_any  $dep_any || { disable_with_reason $cfg "not any dependency is satisfied: $dep_any"; }
 819             disabled_all $dep_con || { disable_with_reason $cfg "some conflicting dependencies are unsatisfied: $dep_con"; }
 820             disabled_any $dep_sel && { disable_with_reason $cfg "some selected dependency is unsatisfied: $dep_sel"; }
 821
 822             enabled $cfg && enable_deep_weak $dep_sel $dep_sgs
 823
 824             for dep in $dep_all $dep_any $dep_sel $dep_sgs; do
 825                 # filter out library deps, these do not belong in extralibs
 826                 is_in $dep $LIBRARY_LIST && continue
 827                 enabled $dep && eval append ${cfg}_extralibs ${dep}_extralibs
 828             done
 829         fi
 830
 831         eval ${cfg}_checking=done
 832     done
 833 }
 834
 835 print_config(){
 836     pfx=$1
 837     files=$2
 838     shift 2
 839     map 'eval echo "$v \${$v:-no}"' "$@" |
 840     awk "BEGIN { split(\"$files\", files) }
 841         {
 842             c = \"$pfx\" toupper(\$1);
 843             v = \$2;
 844             sub(/yes/, 1, v);
 845             sub(/no/,  0, v);
 846             for (f in files) {
 847                 file = files[f];
 848                 if (file ~ /\\.h\$/) {
 849                     printf(\"#define %s %d\\n\", c, v) >>file;
 850                 } else if (file ~ /\\.asm\$/) {
 851                     printf(\"%%define %s %d\\n\", c, v) >>file;
 852                 } else if (file ~ /\\.mak\$/) {
 853                     n = -v ? \"\" : \"!\";
 854                     printf(\"%s%s=yes\\n\", n, c) >>file;
 855                 } else if (file ~ /\\.texi\$/) {
 856                     pre = -v ? \"\" : \"@c \";
 857                     yesno = \$2;
 858                     c2 = tolower(c);
 859                     gsub(/_/, \"-\", c2);
 860                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 861                 }
 862             }
 863         }"
 864 }
 865
 866 print_enabled(){
 867     suf=$1
 868     shift
 869     for v; do
 870         enabled $v && printf "%s\n" ${v%$suf}
 871     done
 872 }
 873
 874 append(){
 875     var=$1
 876     shift
 877     eval "$var=\"\$$var $*\""
 878 }
 879
 880 prepend(){
 881     var=$1
 882     shift
 883     eval "$var=\"$* \$$var\""
 884 }
 885
 886 reverse () {
 887     eval '
 888         reverse_out=
 889         for v in $'$1'; do
 890             reverse_out="$v $reverse_out"
 891         done
 892         '$1'=$reverse_out
 893     '
 894 }
 895
 896 # keeps the last occurence of each non-unique item
 897 unique(){
 898     unique_out=
 899     eval unique_in=\$$1
 900     reverse unique_in
 901     for v in $unique_in; do
 902         # " $unique_out" +space such that every item is surrounded with spaces
 903         case " $unique_out" in *" $v "*) continue; esac  # already in list
 904         unique_out="$unique_out$v "
 905     done
 906     reverse unique_out
 907     eval $1=\$unique_out
 908 }
 909
 910 resolve(){
 911     resolve_out=
 912     eval resolve_in=\$$1
 913     for v in $resolve_in; do
 914         eval 'resolve_out="$resolve_out$'$v' "'
 915     done
 916     eval $1=\$resolve_out
 917 }
 918
 919 add_cppflags(){
 920     append CPPFLAGS "$@"
 921 }
 922
 923 add_cflags(){
 924     append CFLAGS $($cflags_filter "$@")
 925 }
 926
 927 add_cflags_headers(){
 928     append CFLAGS_HEADERS $($cflags_filter "$@")
 929 }
 930
 931 add_cxxflags(){
 932     append CXXFLAGS $($cflags_filter "$@")
 933 }
 934
 935 add_objcflags(){
 936     append OBJCFLAGS $($objcflags_filter "$@")
 937 }
 938
 939 add_asflags(){
 940     append ASFLAGS $($asflags_filter "$@")
 941 }
 942
 943 add_ldflags(){
 944     append LDFLAGS $($ldflags_filter "$@")
 945 }
 946
 947 add_ldexeflags(){
 948     append LDEXEFLAGS $($ldflags_filter "$@")
 949 }
 950
 951 add_ldsoflags(){
 952     append LDSOFLAGS $($ldflags_filter "$@")
 953 }
 954
 955 add_extralibs(){
 956     prepend extralibs $($ldflags_filter "$@")
 957 }
 958
 959 add_stripflags(){
 960     append ASMSTRIPFLAGS "$@"
 961 }
 962
 963 add_host_cppflags(){
 964     append host_cppflags "$@"
 965 }
 966
 967 add_host_cflags(){
 968     append host_cflags $($host_cflags_filter "$@")
 969 }
 970
 971 add_host_ldflags(){
 972     append host_ldflags $($host_ldflags_filter "$@")
 973 }
 974
 975 add_compat(){
 976     append compat_objs $1
 977     shift
 978     map 'add_cppflags -D$v' "$@"
 979 }
 980
 981 test_cmd(){
 982     log "$@"
 983     "$@" >> $logfile 2>&1
 984 }
 985
 986 test_stat(){
 987     log test_stat "$@"
 988     stat "$1" >> $logfile 2>&1
 989 }
 990
 991 cc_e(){
 992     eval printf '%s\\n' $CC_E
 993 }
 994
 995 cc_o(){
 996     eval printf '%s\\n' $CC_O
 997 }
 998
 999 as_o(){
1000     eval printf '%s\\n' $AS_O
1001 }
1002
1003 x86asm_o(){
1004     eval printf '%s\\n' $X86ASM_O
1005 }
1006
1007 ld_o(){
1008     eval printf '%s\\n' $LD_O
1009 }
1010
1011 hostcc_e(){
1012     eval printf '%s\\n' $HOSTCC_E
1013 }
1014
1015 hostcc_o(){
1016     eval printf '%s\\n' $HOSTCC_O
1017 }
1018
1019 nvcc_o(){
1020     eval printf '%s\\n' $NVCC_O
1021 }
1022
1023 test_cc(){
1024     log test_cc "$@"
1025     cat > $TMPC
1026     log_file $TMPC
1027     test_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
1028 }
1029
1030 test_cxx(){
1031     log test_cxx "$@"
1032     cat > $TMPCPP
1033     log_file $TMPCPP
1034     test_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
1035 }
1036
1037 test_objcc(){
1038     log test_objcc "$@"
1039     cat > $TMPM
1040     log_file $TMPM
1041     test_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
1042 }
1043
1044 test_nvcc(){
1045     log test_nvcc "$@"
1046     cat > $TMPCU
1047     log_file $TMPCU
1048     tmpcu_=$TMPCU
1049     tmpo_=$TMPO
1050     [ -x "$(command -v cygpath)" ] && tmpcu_=$(cygpath -m $tmpcu_) && tmpo_=$(cygpath -m $tmpo_)
1051     test_cmd $nvcc $nvccflags "$@" $NVCC_C $(nvcc_o $tmpo_) $tmpcu_
1052 }
1053
1054 check_nvcc() {
1055     log check_nvcc "$@"
1056     name=$1
1057     shift 1
1058     disabled $name && return
1059     disable $name
1060     test_nvcc "$@" <<EOF && enable $name
1061 extern "C" {
1062     __global__ void hello(unsigned char *data) {}
1063 }
1064 EOF
1065 }
1066
1067 test_cpp(){
1068     log test_cpp "$@"
1069     cat > $TMPC
1070     log_file $TMPC
1071     test_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
1072 }
1073
1074 test_as(){
1075     log test_as "$@"
1076     cat > $TMPS
1077     log_file $TMPS
1078     test_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
1079 }
1080
1081 test_x86asm(){
1082     log test_x86asm "$@"
1083     echo "$1" > $TMPASM
1084     log_file $TMPASM
1085     shift
1086     test_cmd $x86asmexe $X86ASMFLAGS -Werror "$@" $(x86asm_o $TMPO) $TMPASM
1087 }
1088
1089 check_cmd(){
1090     log check_cmd "$@"
1091     cmd=$1
1092     disabled $cmd && return
1093     disable $cmd
1094     test_cmd $@ && enable $cmd
1095 }
1096
1097 check_as(){
1098     log check_as "$@"
1099     name=$1
1100     code=$2
1101     shift 2
1102     disable $name
1103     test_as $@ <<EOF && enable $name
1104 $code
1105 EOF
1106 }
1107
1108 check_inline_asm(){
1109     log check_inline_asm "$@"
1110     name="$1"
1111     code="$2"
1112     shift 2
1113     disable $name
1114     test_cc "$@" <<EOF && enable $name
1115 void foo(void){ __asm__ volatile($code); }
1116 EOF
1117 }
1118
1119 check_inline_asm_flags(){
1120     log check_inline_asm_flags "$@"
1121     name="$1"
1122     code="$2"
1123     flags=''
1124     shift 2
1125     while [ "$1" != "" ]; do
1126       append flags $1
1127       shift
1128     done;
1129     disable $name
1130     cat > $TMPC <<EOF
1131 void foo(void){ __asm__ volatile($code); }
1132 EOF
1133     log_file $TMPC
1134     test_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
1135     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
1136 }
1137
1138 check_insn(){
1139     log check_insn "$@"
1140     check_inline_asm ${1}_inline "\"$2\""
1141     check_as ${1}_external "$2"
1142 }
1143
1144 check_x86asm(){
1145     log check_x86asm "$@"
1146     name=$1
1147     shift
1148     disable $name
1149     test_x86asm "$@" && enable $name
1150 }
1151
1152 test_ld(){
1153     log test_ld "$@"
1154     type=$1
1155     shift 1
1156     flags=$(filter_out '-l*|*.so' $@)
1157     libs=$(filter '-l*|*.so' $@)
1158     test_$type $($cflags_filter $flags) || return
1159     flags=$($ldflags_filter $flags)
1160     libs=$($ldflags_filter $libs)
1161     test_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
1162 }
1163
1164 check_ld(){
1165     log check_ld "$@"
1166     type=$1
1167     name=$2
1168     shift 2
1169     disable $name
1170     test_ld $type $@ && enable $name
1171 }
1172
1173 print_include(){
1174     hdr=$1
1175     test "${hdr%.h}" = "${hdr}" &&
1176         echo "#include $hdr"    ||
1177         echo "#include <$hdr>"
1178 }
1179
1180 test_code(){
1181     log test_code "$@"
1182     check=$1
1183     headers=$2
1184     code=$3
1185     shift 3
1186     {
1187         for hdr in $headers; do
1188             print_include $hdr
1189         done
1190         echo "int main(void) { $code; return 0; }"
1191     } | test_$check "$@"
1192 }
1193
1194 check_cppflags(){
1195     log check_cppflags "$@"
1196     test_cpp "$@" <<EOF && append CPPFLAGS "$@"
1197 #include <stdlib.h>
1198 EOF
1199 }
1200
1201 test_cflags(){
1202     log test_cflags "$@"
1203     set -- $($cflags_filter "$@")
1204     test_cc "$@" <<EOF
1205 int x;
1206 EOF
1207 }
1208
1209 check_cflags(){
1210     log check_cflags "$@"
1211     test_cflags "$@" && add_cflags "$@"
1212 }
1213
1214 check_cxxflags(){
1215     log check_cxxflags "$@"
1216     set -- $($cflags_filter "$@")
1217     test_cxx "$@" <<EOF && append CXXFLAGS "$@"
1218 int x;
1219 EOF
1220 }
1221
1222 test_objcflags(){
1223     log test_objcflags "$@"
1224     set -- $($objcflags_filter "$@")
1225     test_objcc "$@" <<EOF
1226 int x;
1227 EOF
1228 }
1229
1230 check_objcflags(){
1231     log check_objcflags "$@"
1232     test_objcflags "$@" && add_objcflags "$@"
1233 }
1234
1235 test_ldflags(){
1236     log test_ldflags "$@"
1237     set -- $($ldflags_filter "$@")
1238     test_ld "cc" "$@" <<EOF
1239 int main(void){ return 0; }
1240 EOF
1241 }
1242
1243 check_ldflags(){
1244     log check_ldflags "$@"
1245     test_ldflags "$@" && add_ldflags "$@"
1246 }
1247
1248 test_stripflags(){
1249     log test_stripflags "$@"
1250     # call test_cc to get a fresh TMPO
1251     test_cc <<EOF
1252 int main(void) { return 0; }
1253 EOF
1254     test_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1255 }
1256
1257 check_stripflags(){
1258     log check_stripflags "$@"
1259     test_stripflags "$@" && add_stripflags "$@"
1260 }
1261
1262 check_headers(){
1263     log check_headers "$@"
1264     headers=$1
1265     shift
1266     disable_sanitized $headers
1267     {
1268         for hdr in $headers; do
1269             print_include $hdr
1270         done
1271         echo "int x;"
1272     } | test_cpp "$@" && enable_sanitized $headers
1273 }
1274
1275 check_header_objcc(){
1276     log check_header_objcc "$@"
1277     rm -f -- "$TMPO"
1278     header=$1
1279     shift
1280     disable_sanitized $header
1281     {
1282        echo "#include <$header>"
1283        echo "int main(void) { return 0; }"
1284     } | test_objcc && test_stat "$TMPO" && enable_sanitized $header
1285 }
1286
1287 check_apple_framework(){
1288     log check_apple_framework "$@"
1289     framework="$1"
1290     name="$(tolower $framework)"
1291     header="${framework}/${framework}.h"
1292     disable $name
1293     check_header_objcc $header &&
1294         enable $name && eval ${name}_extralibs='"-framework $framework"'
1295 }
1296
1297 check_func(){
1298     log check_func "$@"
1299     func=$1
1300     shift
1301     disable $func
1302     test_ld "cc" "$@" <<EOF && enable $func
1303 extern int $func();
1304 int main(void){ $func(); }
1305 EOF
1306 }
1307
1308 check_complexfunc(){
1309     log check_complexfunc "$@"
1310     func=$1
1311     narg=$2
1312     shift 2
1313     test $narg = 2 && args="f, g" || args="f * I"
1314     disable $func
1315     test_ld "cc" "$@" <<EOF && enable $func
1316 #include <complex.h>
1317 #include <math.h>
1318 float foo(complex float f, complex float g) { return $func($args); }
1319 int main(void){ return (int) foo; }
1320 EOF
1321 }
1322
1323 check_mathfunc(){
1324     log check_mathfunc "$@"
1325     func=$1
1326     narg=$2
1327     shift 2
1328     test $narg = 2 && args="f, g" || args="f"
1329     disable $func
1330     test_ld "cc" "$@" <<EOF && enable $func
1331 #include <math.h>
1332 float foo(float f, float g) { return $func($args); }
1333 int main(void){ return (int) foo; }
1334 EOF
1335 }
1336
1337 check_func_headers(){
1338     log check_func_headers "$@"
1339     headers=$1
1340     funcs=$2
1341     shift 2
1342     {
1343         for hdr in $headers; do
1344             print_include $hdr
1345         done
1346         echo "#include <stdint.h>"
1347         for func in $funcs; do
1348             echo "long check_$func(void) { return (long) $func; }"
1349         done
1350         echo "int main(void) { int ret = 0;"
1351         # LTO could optimize out the test functions without this
1352         for func in $funcs; do
1353             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1354         done
1355         echo "return ret; }"
1356     } | test_ld "cc" "$@" && enable $funcs && enable_sanitized $headers
1357 }
1358
1359 check_class_headers_cpp(){
1360     log check_class_headers_cpp "$@"
1361     headers=$1
1362     classes=$2
1363     shift 2
1364     {
1365         for hdr in $headers; do
1366             echo "#include <$hdr>"
1367         done
1368         echo "int main(void) { "
1369         i=1
1370         for class in $classes; do
1371             echo "$class obj$i;"
1372             i=$(expr $i + 1)
1373         done
1374         echo "return 0; }"
1375     } | test_ld "cxx" "$@" && enable $funcs && enable_sanitized $headers
1376 }
1377
1378 test_cpp_condition(){
1379     log test_cpp_condition "$@"
1380     header=$1
1381     condition=$2
1382     shift 2
1383     test_cpp "$@" <<EOF
1384 #include <$header>
1385 #if !($condition)
1386 #error "unsatisfied condition: $condition"
1387 #endif
1388 EOF
1389 }
1390
1391 check_cpp_condition(){
1392     log check_cpp_condition "$@"
1393     name=$1
1394     shift 1
1395     disable $name
1396     test_cpp_condition "$@" && enable $name
1397 }
1398
1399 test_cflags_cc(){
1400     log test_cflags_cc "$@"
1401     flags=$1
1402     header=$2
1403     condition=$3
1404     shift 3
1405     set -- $($cflags_filter "$flags")
1406     test_cc "$@" <<EOF
1407 #include <$header>
1408 #if !($condition)
1409 #error "unsatisfied condition: $condition"
1410 #endif
1411 EOF
1412 }
1413
1414 check_lib(){
1415     log check_lib "$@"
1416     name="$1"
1417     headers="$2"
1418     funcs="$3"
1419     shift 3
1420     disable $name
1421     check_func_headers "$headers" "$funcs" "$@" &&
1422         enable $name && eval ${name}_extralibs="\$@"
1423 }
1424
1425 check_lib_cpp(){
1426     log check_lib_cpp "$@"
1427     name="$1"
1428     headers="$2"
1429     classes="$3"
1430     shift 3
1431     disable $name
1432     check_class_headers_cpp "$headers" "$classes" "$@" &&
1433         enable $name && eval ${name}_extralibs="\$@"
1434 }
1435
1436 test_pkg_config(){
1437     log test_pkg_config "$@"
1438     name="$1"
1439     pkg_version="$2"
1440     pkg="${2%% *}"
1441     headers="$3"
1442     funcs="$4"
1443     shift 4
1444     disable $name
1445     test_cmd $pkg_config --exists --print-errors $pkg_version || return
1446     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1447     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1448     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1449         enable $name &&
1450         set_sanitized "${name}_cflags"    $pkg_cflags &&
1451         set_sanitized "${name}_extralibs" $pkg_libs
1452 }
1453
1454 check_pkg_config(){
1455     log check_pkg_config "$@"
1456     name="$1"
1457     test_pkg_config "$@" &&
1458         eval add_cflags \$${name}_cflags
1459 }
1460
1461 test_exec(){
1462     test_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1463 }
1464
1465 check_exec_crash(){
1466     log check_exec_crash "$@"
1467     code=$(cat)
1468
1469     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1470     # are safe but may not be available everywhere.  Thus we use
1471     # raise(SIGTERM) instead.  The check is run in a subshell so we
1472     # can redirect the "Terminated" message from the shell.  SIGBUS
1473     # is not defined by standard C so it is used conditionally.
1474
1475     (test_exec "$@") >> $logfile 2>&1 <<EOF
1476 #include <signal.h>
1477 static void sighandler(int sig){
1478     raise(SIGTERM);
1479 }
1480 int foo(void){
1481     $code
1482 }
1483 int (*func_ptr)(void) = foo;
1484 int main(void){
1485     signal(SIGILL, sighandler);
1486     signal(SIGFPE, sighandler);
1487     signal(SIGSEGV, sighandler);
1488 #ifdef SIGBUS
1489     signal(SIGBUS, sighandler);
1490 #endif
1491     return func_ptr();
1492 }
1493 EOF
1494 }
1495
1496 check_type(){
1497     log check_type "$@"
1498     headers=$1
1499     type=$2
1500     shift 2
1501     disable_sanitized "$type"
1502     test_code cc "$headers" "$type v" "$@" && enable_sanitized "$type"
1503 }
1504
1505 check_struct(){
1506     log check_struct "$@"
1507     headers=$1
1508     struct=$2
1509     member=$3
1510     shift 3
1511     disable_sanitized "${struct}_${member}"
1512     test_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1513         enable_sanitized "${struct}_${member}"
1514 }
1515
1516 check_builtin(){
1517     log check_builtin "$@"
1518     name=$1
1519     headers=$2
1520     builtin=$3
1521     shift 3
1522     disable "$name"
1523     test_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1524 }
1525
1526 check_compile_assert(){
1527     log check_compile_assert "$@"
1528     name=$1
1529     headers=$2
1530     condition=$3
1531     shift 3
1532     disable "$name"
1533     test_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1534 }
1535
1536 check_cc(){
1537     log check_cc "$@"
1538     name=$1
1539     shift
1540     disable "$name"
1541     test_code cc "$@" && enable "$name"
1542 }
1543
1544 require(){
1545     log require "$@"
1546     name_version="$1"
1547     name="${1%% *}"
1548     shift
1549     check_lib $name "$@" || die "ERROR: $name_version not found"
1550 }
1551
1552 require_cc(){
1553     log require_cc "$@"
1554     name="$1"
1555     check_cc "$@" || die "ERROR: $name failed"
1556 }
1557
1558 require_cpp(){
1559     log require_cpp "$@"
1560     name_version="$1"
1561     name="${1%% *}"
1562     shift
1563     check_lib_cpp "$name" "$@" || die "ERROR: $name_version not found"
1564 }
1565
1566 require_headers(){
1567     log require_headers "$@"
1568     headers="$1"
1569     check_headers "$@" || die "ERROR: $headers not found"
1570 }
1571
1572 require_cpp_condition(){
1573     log require_cpp_condition "$@"
1574     condition="$3"
1575     check_cpp_condition "$@" || die "ERROR: $condition not satisfied"
1576 }
1577
1578 require_pkg_config(){
1579     log require_pkg_config "$@"
1580     pkg_version="$2"
1581     check_pkg_config "$@" || die "ERROR: $pkg_version not found using pkg-config$pkg_config_fail_message"
1582 }
1583
1584 test_host_cc(){
1585     log test_host_cc "$@"
1586     cat > $TMPC
1587     log_file $TMPC
1588     test_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1589 }
1590
1591 test_host_cpp(){
1592     log test_host_cpp "$@"
1593     cat > $TMPC
1594     log_file $TMPC
1595     test_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1596 }
1597
1598 check_host_cppflags(){
1599     log check_host_cppflags "$@"
1600     test_host_cpp "$@" <<EOF && append host_cppflags "$@"
1601 #include <stdlib.h>
1602 EOF
1603 }
1604
1605 check_host_cflags(){
1606     log check_host_cflags "$@"
1607     set -- $($host_cflags_filter "$@")
1608     test_host_cc "$@" <<EOF && append host_cflags "$@"
1609 int x;
1610 EOF
1611 }
1612
1613 test_host_cpp_condition(){
1614     log test_host_cpp_condition "$@"
1615     header=$1
1616     condition=$2
1617     shift 2
1618     test_host_cpp "$@" <<EOF
1619 #include <$header>
1620 #if !($condition)
1621 #error "unsatisfied condition: $condition"
1622 #endif
1623 EOF
1624 }
1625
1626 check_host_cpp_condition(){
1627     log check_host_cpp_condition "$@"
1628     name=$1
1629     shift 1
1630     disable $name
1631     test_host_cpp_condition "$@" && enable $name
1632 }
1633
1634 cp_if_changed(){
1635     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1636     mkdir -p "$(dirname $2)"
1637     cp -f "$1" "$2"
1638 }
1639
1640 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1641 # system-dependent things.
1642
1643 AVCODEC_COMPONENTS="
1644     bsfs
1645     decoders
1646     encoders
1647     hwaccels
1648     parsers
1649 "
1650
1651 AVDEVICE_COMPONENTS="
1652     indevs
1653     outdevs
1654 "
1655
1656 AVFILTER_COMPONENTS="
1657     filters
1658 "
1659
1660 AVFORMAT_COMPONENTS="
1661     demuxers
1662     muxers
1663     protocols
1664 "
1665
1666 COMPONENT_LIST="
1667     $AVCODEC_COMPONENTS
1668     $AVDEVICE_COMPONENTS
1669     $AVFILTER_COMPONENTS
1670     $AVFORMAT_COMPONENTS
1671 "
1672
1673 EXAMPLE_LIST="
1674     avio_list_dir_example
1675     avio_reading_example
1676     decode_audio_example
1677     decode_video_example
1678     demuxing_decoding_example
1679     encode_audio_example
1680     encode_video_example
1681     extract_mvs_example
1682     filter_audio_example
1683     filtering_audio_example
1684     filtering_video_example
1685     http_multiclient_example
1686     hw_decode_example
1687     metadata_example
1688     muxing_example
1689     qsvdec_example
1690     remuxing_example
1691     resampling_audio_example
1692     scaling_video_example
1693     transcode_aac_example
1694     transcoding_example
1695     vaapi_encode_example
1696     vaapi_transcode_example
1697 "
1698
1699 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1700     alsa
1701     appkit
1702     avfoundation
1703     bzlib
1704     coreimage
1705     iconv
1706     libxcb
1707     libxcb_shm
1708     libxcb_shape
1709     libxcb_xfixes
1710     lzma
1711     mediafoundation
1712     schannel
1713     sdl2
1714     securetransport
1715     sndio
1716     xlib
1717     zlib
1718 "
1719
1720 EXTERNAL_LIBRARY_GPL_LIST="
1721     avisynth
1722     frei0r
1723     libcdio
1724     libdavs2
1725     librubberband
1726     libvidstab
1727     libx264
1728     libx265
1729     libxavs
1730     libxavs2
1731     libxvid
1732 "
1733
1734 EXTERNAL_LIBRARY_NONFREE_LIST="
1735     decklink
1736     libfdk_aac
1737     openssl
1738     libtls
1739 "
1740
1741 EXTERNAL_LIBRARY_VERSION3_LIST="
1742     gmp
1743     libaribb24
1744     liblensfun
1745     libopencore_amrnb
1746     libopencore_amrwb
1747     libvo_amrwbenc
1748     mbedtls
1749     rkmpp
1750 "
1751
1752 EXTERNAL_LIBRARY_GPLV3_LIST="
1753     libsmbclient
1754 "
1755
1756 EXTERNAL_LIBRARY_LIST="
1757     $EXTERNAL_LIBRARY_GPL_LIST
1758     $EXTERNAL_LIBRARY_NONFREE_LIST
1759     $EXTERNAL_LIBRARY_VERSION3_LIST
1760     $EXTERNAL_LIBRARY_GPLV3_LIST
1761     chromaprint
1762     gcrypt
1763     gnutls
1764     jni
1765     ladspa
1766     libaom
1767     libass
1768     libbluray
1769     libbs2b
1770     libcaca
1771     libcelt
1772     libcodec2
1773     libdav1d
1774     libdc1394
1775     libdrm
1776     libflite
1777     libfontconfig
1778     libfreetype
1779     libfribidi
1780     libglslang
1781     libgme
1782     libgsm
1783     libiec61883
1784     libilbc
1785     libjack
1786     libklvanc
1787     libkvazaar
1788     libmodplug
1789     libmp3lame
1790     libmysofa
1791     libopencv
1792     libopenh264
1793     libopenjpeg
1794     libopenmpt
1795     libopenvino
1796     libopus
1797     libpulse
1798     librabbitmq
1799     librav1e
1800     librsvg
1801     librtmp
1802     libshine
1803     libsmbclient
1804     libsnappy
1805     libsoxr
1806     libspeex
1807     libsrt
1808     libssh
1809     libsvtav1
1810     libtensorflow
1811     libtesseract
1812     libtheora
1813     libtwolame
1814     libuavs3d
1815     libv4l2
1816     libvmaf
1817     libvorbis
1818     libvpx
1819     libwebp
1820     libxml2
1821     libzimg
1822     libzmq
1823     libzvbi
1824     lv2
1825     mediacodec
1826     openal
1827     opengl
1828     pocketsphinx
1829     vapoursynth
1830 "
1831
1832 HWACCEL_AUTODETECT_LIBRARY_LIST="
1833     amf
1834     audiotoolbox
1835     crystalhd
1836     cuda
1837     cuda_llvm
1838     cuvid
1839     d3d11va
1840     dxva2
1841     ffnvcodec
1842     nvdec
1843     nvenc
1844     vaapi
1845     vdpau
1846     videotoolbox
1847     v4l2_m2m
1848     xvmc
1849 "
1850
1851 # catchall list of things that require external libs to link
1852 EXTRALIBS_LIST="
1853     cpu_init
1854     cws2fws
1855 "
1856
1857 HWACCEL_LIBRARY_NONFREE_LIST="
1858     cuda_nvcc
1859     cuda_sdk
1860     libnpp
1861 "
1862
1863 HWACCEL_LIBRARY_LIST="
1864     $HWACCEL_LIBRARY_NONFREE_LIST
1865     libmfx
1866     mmal
1867     omx
1868     opencl
1869     vulkan
1870 "
1871
1872 DOCUMENT_LIST="
1873     doc
1874     htmlpages
1875     manpages
1876     podpages
1877     txtpages
1878 "
1879
1880 FEATURE_LIST="
1881     ftrapv
1882     gray
1883     hardcoded_tables
1884     omx_rpi
1885     runtime_cpudetect
1886     safe_bitstream_reader
1887     shared
1888     small
1889     static
1890     swscale_alpha
1891 "
1892
1893 # this list should be kept in linking order
1894 LIBRARY_LIST="
1895     avdevice
1896     avfilter
1897     swscale
1898     postproc
1899     avformat
1900     avcodec
1901     swresample
1902     avresample
1903     avutil
1904 "
1905
1906 LICENSE_LIST="
1907     gpl
1908     nonfree
1909     version3
1910 "
1911
1912 PROGRAM_LIST="
1913     ffplay
1914     ffprobe
1915     ffmpeg
1916 "
1917
1918 SUBSYSTEM_LIST="
1919     dct
1920     dwt
1921     error_resilience
1922     faan
1923     fast_unaligned
1924     fft
1925     lsp
1926     lzo
1927     mdct
1928     pixelutils
1929     network
1930     rdft
1931 "
1932
1933 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1934 CONFIG_LIST="
1935     $DOCUMENT_LIST
1936     $EXAMPLE_LIST
1937     $EXTERNAL_LIBRARY_LIST
1938     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1939     $HWACCEL_LIBRARY_LIST
1940     $HWACCEL_AUTODETECT_LIBRARY_LIST
1941     $FEATURE_LIST
1942     $LICENSE_LIST
1943     $LIBRARY_LIST
1944     $PROGRAM_LIST
1945     $SUBSYSTEM_LIST
1946     autodetect
1947     fontconfig
1948     large_tests
1949     linux_perf
1950     memory_poisoning
1951     neon_clobber_test
1952     ossfuzz
1953     pic
1954     thumb
1955     valgrind_backtrace
1956     xmm_clobber_test
1957     $COMPONENT_LIST
1958 "
1959
1960 THREADS_LIST="
1961     pthreads
1962     os2threads
1963     w32threads
1964 "
1965
1966 ATOMICS_LIST="
1967     atomics_gcc
1968     atomics_suncc
1969     atomics_win32
1970 "
1971
1972 AUTODETECT_LIBS="
1973     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1974     $HWACCEL_AUTODETECT_LIBRARY_LIST
1975     $THREADS_LIST
1976 "
1977
1978 ARCH_LIST="
1979     aarch64
1980     alpha
1981     arm
1982     avr32
1983     avr32_ap
1984     avr32_uc
1985     bfin
1986     ia64
1987     m68k
1988     mips
1989     mips64
1990     parisc
1991     ppc
1992     ppc64
1993     s390
1994     sh4
1995     sparc
1996     sparc64
1997     tilegx
1998     tilepro
1999     tomi
2000     x86
2001     x86_32
2002     x86_64
2003 "
2004
2005 ARCH_EXT_LIST_ARM="
2006     armv5te
2007     armv6
2008     armv6t2
2009     armv8
2010     neon
2011     vfp
2012     vfpv3
2013     setend
2014 "
2015
2016 ARCH_EXT_LIST_MIPS="
2017     mipsfpu
2018     mips32r2
2019     mips32r5
2020     mips64r2
2021     mips32r6
2022     mips64r6
2023     mipsdsp
2024     mipsdspr2
2025     msa
2026     msa2
2027 "
2028
2029 ARCH_EXT_LIST_LOONGSON="
2030     loongson2
2031     loongson3
2032     mmi
2033 "
2034
2035 ARCH_EXT_LIST_X86_SIMD="
2036     aesni
2037     amd3dnow
2038     amd3dnowext
2039     avx
2040     avx2
2041     avx512
2042     fma3
2043     fma4
2044     mmx
2045     mmxext
2046     sse
2047     sse2
2048     sse3
2049     sse4
2050     sse42
2051     ssse3
2052     xop
2053 "
2054
2055 ARCH_EXT_LIST_PPC="
2056     altivec
2057     dcbzl
2058     ldbrx
2059     power8
2060     ppc4xx
2061     vsx
2062 "
2063
2064 ARCH_EXT_LIST_X86="
2065     $ARCH_EXT_LIST_X86_SIMD
2066     cpunop
2067     i686
2068 "
2069
2070 ARCH_EXT_LIST="
2071     $ARCH_EXT_LIST_ARM
2072     $ARCH_EXT_LIST_PPC
2073     $ARCH_EXT_LIST_X86
2074     $ARCH_EXT_LIST_MIPS
2075     $ARCH_EXT_LIST_LOONGSON
2076 "
2077
2078 ARCH_FEATURES="
2079     aligned_stack
2080     fast_64bit
2081     fast_clz
2082     fast_cmov
2083     local_aligned
2084     simd_align_16
2085     simd_align_32
2086     simd_align_64
2087 "
2088
2089 BUILTIN_LIST="
2090     atomic_cas_ptr
2091     machine_rw_barrier
2092     MemoryBarrier
2093     mm_empty
2094     rdtsc
2095     sem_timedwait
2096     sync_val_compare_and_swap
2097 "
2098 HAVE_LIST_CMDLINE="
2099     inline_asm
2100     symver
2101     x86asm
2102 "
2103
2104 HAVE_LIST_PUB="
2105     bigendian
2106     fast_unaligned
2107 "
2108
2109 HEADERS_LIST="
2110     arpa_inet_h
2111     asm_types_h
2112     cdio_paranoia_h
2113     cdio_paranoia_paranoia_h
2114     cuda_h
2115     dispatch_dispatch_h
2116     dev_bktr_ioctl_bt848_h
2117     dev_bktr_ioctl_meteor_h
2118     dev_ic_bt8xx_h
2119     dev_video_bktr_ioctl_bt848_h
2120     dev_video_meteor_ioctl_meteor_h
2121     direct_h
2122     dirent_h
2123     dxgidebug_h
2124     dxva_h
2125     ES2_gl_h
2126     gsm_h
2127     io_h
2128     linux_perf_event_h
2129     machine_ioctl_bt848_h
2130     machine_ioctl_meteor_h
2131     malloc_h
2132     opencv2_core_core_c_h
2133     OpenGL_gl3_h
2134     poll_h
2135     sys_param_h
2136     sys_resource_h
2137     sys_select_h
2138     sys_soundcard_h
2139     sys_time_h
2140     sys_un_h
2141     sys_videoio_h
2142     termios_h
2143     udplite_h
2144     unistd_h
2145     valgrind_valgrind_h
2146     windows_h
2147     winsock2_h
2148 "
2149
2150 INTRINSICS_LIST="
2151     intrinsics_neon
2152 "
2153
2154 COMPLEX_FUNCS="
2155     cabs
2156     cexp
2157 "
2158
2159 MATH_FUNCS="
2160     atanf
2161     atan2f
2162     cbrt
2163     cbrtf
2164     copysign
2165     cosf
2166     erf
2167     exp2
2168     exp2f
2169     expf
2170     hypot
2171     isfinite
2172     isinf
2173     isnan
2174     ldexpf
2175     llrint
2176     llrintf
2177     log2
2178     log2f
2179     log10f
2180     lrint
2181     lrintf
2182     powf
2183     rint
2184     round
2185     roundf
2186     sinf
2187     trunc
2188     truncf
2189 "
2190
2191 SYSTEM_FEATURES="
2192     dos_paths
2193     libc_msvcrt
2194     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2195     section_data_rel_ro
2196     threads
2197     uwp
2198     winrt
2199 "
2200
2201 SYSTEM_FUNCS="
2202     access
2203     aligned_malloc
2204     arc4random
2205     clock_gettime
2206     closesocket
2207     CommandLineToArgvW
2208     fcntl
2209     getaddrinfo
2210     gethrtime
2211     getopt
2212     GetModuleHandle
2213     GetProcessAffinityMask
2214     GetProcessMemoryInfo
2215     GetProcessTimes
2216     getrusage
2217     GetStdHandle
2218     GetSystemTimeAsFileTime
2219     gettimeofday
2220     glob
2221     glXGetProcAddress
2222     gmtime_r
2223     inet_aton
2224     isatty
2225     kbhit
2226     localtime_r
2227     lstat
2228     lzo1x_999_compress
2229     mach_absolute_time
2230     MapViewOfFile
2231     memalign
2232     mkstemp
2233     mmap
2234     mprotect
2235     nanosleep
2236     PeekNamedPipe
2237     posix_memalign
2238     pthread_cancel
2239     sched_getaffinity
2240     SecItemImport
2241     SetConsoleTextAttribute
2242     SetConsoleCtrlHandler
2243     SetDllDirectory
2244     setmode
2245     setrlimit
2246     Sleep
2247     strerror_r
2248     sysconf
2249     sysctl
2250     usleep
2251     UTGetOSTypeFromString
2252     VirtualAlloc
2253     wglGetProcAddress
2254 "
2255
2256 SYSTEM_LIBRARIES="
2257     bcrypt
2258     vaapi_drm
2259     vaapi_x11
2260     vdpau_x11
2261 "
2262
2263 TOOLCHAIN_FEATURES="
2264     as_arch_directive
2265     as_dn_directive
2266     as_fpu_directive
2267     as_func
2268     as_object_arch
2269     asm_mod_q
2270     blocks_extension
2271     ebp_available
2272     ebx_available
2273     gnu_as
2274     gnu_windres
2275     ibm_asm
2276     inline_asm_direct_symbol_refs
2277     inline_asm_labels
2278     inline_asm_nonlocal_labels
2279     pragma_deprecated
2280     rsync_contimeout
2281     symver_asm_label
2282     symver_gnu_asm
2283     vfp_args
2284     xform_asm
2285     xmm_clobbers
2286 "
2287
2288 TYPES_LIST="
2289     kCMVideoCodecType_HEVC
2290     kCVPixelFormatType_420YpCbCr10BiPlanarVideoRange
2291     kCVImageBufferTransferFunction_SMPTE_ST_2084_PQ
2292     kCVImageBufferTransferFunction_ITU_R_2100_HLG
2293     kCVImageBufferTransferFunction_Linear
2294     socklen_t
2295     struct_addrinfo
2296     struct_group_source_req
2297     struct_ip_mreq_source
2298     struct_ipv6_mreq
2299     struct_msghdr_msg_flags
2300     struct_pollfd
2301     struct_rusage_ru_maxrss
2302     struct_sctp_event_subscribe
2303     struct_sockaddr_in6
2304     struct_sockaddr_sa_len
2305     struct_sockaddr_storage
2306     struct_stat_st_mtim_tv_nsec
2307     struct_v4l2_frmivalenum_discrete
2308 "
2309
2310 HAVE_LIST="
2311     $ARCH_EXT_LIST
2312     $(add_suffix _external $ARCH_EXT_LIST)
2313     $(add_suffix _inline   $ARCH_EXT_LIST)
2314     $ARCH_FEATURES
2315     $BUILTIN_LIST
2316     $COMPLEX_FUNCS
2317     $HAVE_LIST_CMDLINE
2318     $HAVE_LIST_PUB
2319     $HEADERS_LIST
2320     $INTRINSICS_LIST
2321     $MATH_FUNCS
2322     $SYSTEM_FEATURES
2323     $SYSTEM_FUNCS
2324     $SYSTEM_LIBRARIES
2325     $THREADS_LIST
2326     $TOOLCHAIN_FEATURES
2327     $TYPES_LIST
2328     libdrm_getfb2
2329     makeinfo
2330     makeinfo_html
2331     opencl_d3d11
2332     opencl_drm_arm
2333     opencl_drm_beignet
2334     opencl_dxva2
2335     opencl_vaapi_beignet
2336     opencl_vaapi_intel_media
2337     perl
2338     pod2man
2339     texi2html
2340 "
2341
2342 # options emitted with CONFIG_ prefix but not available on the command line
2343 CONFIG_EXTRA="
2344     aandcttables
2345     ac3dsp
2346     adts_header
2347     atsc_a53
2348     audio_frame_queue
2349     audiodsp
2350     blockdsp
2351     bswapdsp
2352     cabac
2353     cbs
2354     cbs_av1
2355     cbs_h264
2356     cbs_h265
2357     cbs_jpeg
2358     cbs_mpeg2
2359     cbs_vp9
2360     dirac_parse
2361     dnn
2362     dvprofile
2363     exif
2364     faandct
2365     faanidct
2366     fdctdsp
2367     flacdsp
2368     fmtconvert
2369     frame_thread_encoder
2370     g722dsp
2371     golomb
2372     gplv3
2373     h263dsp
2374     h264chroma
2375     h264dsp
2376     h264parse
2377     h264pred
2378     h264qpel
2379     hevcparse
2380     hpeldsp
2381     huffman
2382     huffyuvdsp
2383     huffyuvencdsp
2384     idctdsp
2385     iirfilter
2386     mdct15
2387     intrax8
2388     iso_media
2389     ividsp
2390     jpegtables
2391     lgplv3
2392     libx262
2393     llauddsp
2394     llviddsp
2395     llvidencdsp
2396     lpc
2397     lzf
2398     me_cmp
2399     mpeg_er
2400     mpegaudio
2401     mpegaudiodsp
2402     mpegaudioheader
2403     mpegvideo
2404     mpegvideoenc
2405     mss34dsp
2406     pixblockdsp
2407     qpeldsp
2408     qsv
2409     qsvdec
2410     qsvenc
2411     qsvvpp
2412     rangecoder
2413     riffdec
2414     riffenc
2415     rtpdec
2416     rtpenc_chain
2417     rv34dsp
2418     scene_sad
2419     sinewin
2420     snappy
2421     srtp
2422     startcode
2423     texturedsp
2424     texturedspenc
2425     tpeldsp
2426     vaapi_1
2427     vaapi_encode
2428     vc1dsp
2429     videodsp
2430     vp3dsp
2431     vp56dsp
2432     vp8dsp
2433     wma_freqs
2434     wmv2dsp
2435 "
2436
2437 CMDLINE_SELECT="
2438     $ARCH_EXT_LIST
2439     $CONFIG_LIST
2440     $HAVE_LIST_CMDLINE
2441     $THREADS_LIST
2442     asm
2443     cross_compile
2444     debug
2445     extra_warnings
2446     logging
2447     lto
2448     optimizations
2449     rpath
2450     stripping
2451 "
2452
2453 PATHS_LIST="
2454     bindir
2455     datadir
2456     docdir
2457     incdir
2458     libdir
2459     mandir
2460     pkgconfigdir
2461     prefix
2462     shlibdir
2463     install_name_dir
2464 "
2465
2466 CMDLINE_SET="
2467     $PATHS_LIST
2468     ar
2469     arch
2470     as
2471     assert_level
2472     build_suffix
2473     cc
2474     objcc
2475     cpu
2476     cross_prefix
2477     custom_allocator
2478     cxx
2479     dep_cc
2480     doxygen
2481     env
2482     extra_version
2483     gas
2484     host_cc
2485     host_cflags
2486     host_extralibs
2487     host_ld
2488     host_ldflags
2489     host_os
2490     ignore_tests
2491     install
2492     ld
2493     ln_s
2494     logfile
2495     malloc_prefix
2496     nm
2497     optflags
2498     nvcc
2499     nvccflags
2500     pkg_config
2501     pkg_config_flags
2502     progs_suffix
2503     random_seed
2504     ranlib
2505     samples
2506     strip
2507     sws_max_filter_size
2508     sysinclude
2509     sysroot
2510     target_exec
2511     target_os
2512     target_path
2513     target_samples
2514     tempprefix
2515     toolchain
2516     valgrind
2517     windres
2518     x86asmexe
2519 "
2520
2521 CMDLINE_APPEND="
2522     extra_cflags
2523     extra_cxxflags
2524     extra_objcflags
2525     host_cppflags
2526 "
2527
2528 # code dependency declarations
2529
2530 # architecture extensions
2531
2532 armv5te_deps="arm"
2533 armv6_deps="arm"
2534 armv6t2_deps="arm"
2535 armv8_deps="aarch64"
2536 neon_deps_any="aarch64 arm"
2537 intrinsics_neon_deps="neon"
2538 vfp_deps_any="aarch64 arm"
2539 vfpv3_deps="vfp"
2540 setend_deps="arm"
2541
2542 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2543
2544 altivec_deps="ppc"
2545 dcbzl_deps="ppc"
2546 ldbrx_deps="ppc"
2547 ppc4xx_deps="ppc"
2548 vsx_deps="altivec"
2549 power8_deps="vsx"
2550
2551 loongson2_deps="mips"
2552 loongson3_deps="mips"
2553 mips32r2_deps="mips"
2554 mips32r5_deps="mips"
2555 mips32r6_deps="mips"
2556 mips64r2_deps="mips"
2557 mips64r6_deps="mips"
2558 mipsfpu_deps="mips"
2559 mipsdsp_deps="mips"
2560 mipsdspr2_deps="mips"
2561 mmi_deps_any="loongson2 loongson3"
2562 msa_deps="mipsfpu"
2563 msa2_deps="msa"
2564
2565 cpunop_deps="i686"
2566 x86_64_select="i686"
2567 x86_64_suggest="fast_cmov"
2568
2569 amd3dnow_deps="mmx"
2570 amd3dnowext_deps="amd3dnow"
2571 i686_deps="x86"
2572 mmx_deps="x86"
2573 mmxext_deps="mmx"
2574 sse_deps="mmxext"
2575 sse2_deps="sse"
2576 sse3_deps="sse2"
2577 ssse3_deps="sse3"
2578 sse4_deps="ssse3"
2579 sse42_deps="sse4"
2580 aesni_deps="sse42"
2581 avx_deps="sse42"
2582 xop_deps="avx"
2583 fma3_deps="avx"
2584 fma4_deps="avx"
2585 avx2_deps="avx"
2586 avx512_deps="avx2"
2587
2588 mmx_external_deps="x86asm"
2589 mmx_inline_deps="inline_asm x86"
2590 mmx_suggest="mmx_external mmx_inline"
2591
2592 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2593     eval dep=\$${ext}_deps
2594     eval ${ext}_external_deps='"${dep}_external"'
2595     eval ${ext}_inline_deps='"${dep}_inline"'
2596     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2597 done
2598
2599 aligned_stack_if_any="aarch64 ppc x86"
2600 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2601 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2602 fast_unaligned_if_any="aarch64 ppc x86"
2603 simd_align_16_if_any="altivec neon sse"
2604 simd_align_32_if_any="avx"
2605 simd_align_64_if_any="avx512"
2606
2607 # system capabilities
2608 linux_perf_deps="linux_perf_event_h"
2609 symver_if_any="symver_asm_label symver_gnu_asm"
2610 valgrind_backtrace_conflict="optimizations"
2611 valgrind_backtrace_deps="valgrind_valgrind_h"
2612
2613 # threading support
2614 atomics_gcc_if="sync_val_compare_and_swap"
2615 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2616 atomics_win32_if="MemoryBarrier"
2617 atomics_native_if_any="$ATOMICS_LIST"
2618 w32threads_deps="atomics_native"
2619 threads_if_any="$THREADS_LIST"
2620
2621 # subsystems
2622 cbs_av1_select="cbs"
2623 cbs_h264_select="cbs"
2624 cbs_h265_select="cbs"
2625 cbs_jpeg_select="cbs"
2626 cbs_mpeg2_select="cbs"
2627 cbs_vp9_select="cbs"
2628 dct_select="rdft"
2629 dirac_parse_select="golomb"
2630 dnn_suggest="libtensorflow libopenvino"
2631 dnn_deps="swscale"
2632 error_resilience_select="me_cmp"
2633 faandct_deps="faan"
2634 faandct_select="fdctdsp"
2635 faanidct_deps="faan"
2636 faanidct_select="idctdsp"
2637 h264dsp_select="startcode"
2638 hevcparse_select="atsc_a53 golomb"
2639 frame_thread_encoder_deps="encoders threads"
2640 intrax8_select="blockdsp idctdsp"
2641 mdct_select="fft"
2642 mdct15_select="fft"
2643 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2644 mpeg_er_select="error_resilience"
2645 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2646 mpegaudiodsp_select="dct"
2647 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2648 mpegvideoenc_select="aandcttables me_cmp mpegvideo pixblockdsp qpeldsp"
2649 vc1dsp_select="h264chroma qpeldsp startcode"
2650 rdft_select="fft"
2651
2652 # decoders / encoders
2653 aac_decoder_select="adts_header mdct15 mdct sinewin"
2654 aac_fixed_decoder_select="adts_header mdct sinewin"
2655 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2656 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2657 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2658 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2659 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2660 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2661 acelp_kelvin_decoder_select="audiodsp"
2662 adpcm_g722_decoder_select="g722dsp"
2663 adpcm_g722_encoder_select="g722dsp"
2664 aic_decoder_select="golomb idctdsp"
2665 alac_encoder_select="lpc"
2666 als_decoder_select="bswapdsp"
2667 amrnb_decoder_select="lsp"
2668 amrwb_decoder_select="lsp"
2669 amv_decoder_select="sp5x_decoder exif"
2670 amv_encoder_select="jpegtables mpegvideoenc"
2671 ape_decoder_select="bswapdsp llauddsp"
2672 apng_decoder_deps="zlib"
2673 apng_encoder_deps="zlib"
2674 apng_encoder_select="llvidencdsp"
2675 aptx_decoder_select="audio_frame_queue"
2676 aptx_encoder_select="audio_frame_queue"
2677 aptx_hd_decoder_select="audio_frame_queue"
2678 aptx_hd_encoder_select="audio_frame_queue"
2679 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2680 asv1_encoder_select="aandcttables bswapdsp fdctdsp pixblockdsp"
2681 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2682 asv2_encoder_select="aandcttables bswapdsp fdctdsp pixblockdsp"
2683 atrac1_decoder_select="mdct sinewin"
2684 atrac3_decoder_select="mdct"
2685 atrac3al_decoder_select="mdct"
2686 atrac3p_decoder_select="mdct sinewin"
2687 atrac3pal_decoder_select="mdct sinewin"
2688 atrac9_decoder_select="mdct"
2689 av1_decoder_select="cbs_av1"
2690 avrn_decoder_select="exif jpegtables"
2691 bink_decoder_select="blockdsp hpeldsp"
2692 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2693 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2694 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2695 clearvideo_decoder_select="idctdsp"
2696 cllc_decoder_select="bswapdsp"
2697 comfortnoise_encoder_select="lpc"
2698 cook_decoder_select="audiodsp mdct sinewin"
2699 cscd_decoder_select="lzo"
2700 cscd_decoder_suggest="zlib"
2701 dca_decoder_select="mdct"
2702 dca_encoder_select="mdct"
2703 dds_decoder_select="texturedsp"
2704 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2705 dnxhd_decoder_select="blockdsp idctdsp"
2706 dnxhd_encoder_select="blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2707 dolby_e_decoder_select="mdct"
2708 dvvideo_decoder_select="dvprofile idctdsp"
2709 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2710 dxa_decoder_deps="zlib"
2711 dxv_decoder_select="lzf texturedsp"
2712 eac3_decoder_select="ac3_decoder"
2713 eac3_encoder_select="ac3_encoder"
2714 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2715 eatgq_decoder_select="aandcttables"
2716 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2717 exr_decoder_deps="zlib"
2718 ffv1_decoder_select="rangecoder"
2719 ffv1_encoder_select="rangecoder"
2720 ffvhuff_decoder_select="huffyuv_decoder"
2721 ffvhuff_encoder_select="huffyuv_encoder"
2722 fic_decoder_select="golomb"
2723 flac_decoder_select="flacdsp"
2724 flac_encoder_select="bswapdsp flacdsp lpc"
2725 flashsv2_decoder_deps="zlib"
2726 flashsv2_encoder_deps="zlib"
2727 flashsv_decoder_deps="zlib"
2728 flashsv_encoder_deps="zlib"
2729 flv_decoder_select="h263_decoder"
2730 flv_encoder_select="h263_encoder"
2731 fourxm_decoder_select="blockdsp bswapdsp"
2732 fraps_decoder_select="bswapdsp huffman"
2733 g2m_decoder_deps="zlib"
2734 g2m_decoder_select="blockdsp idctdsp jpegtables"
2735 g729_decoder_select="audiodsp"
2736 h261_decoder_select="mpegvideo"
2737 h261_encoder_select="mpegvideoenc"
2738 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2739 h263_encoder_select="h263dsp mpegvideoenc"
2740 h263i_decoder_select="h263_decoder"
2741 h263p_decoder_select="h263_decoder"
2742 h263p_encoder_select="h263_encoder"
2743 h264_decoder_select="atsc_a53 cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2744 h264_decoder_suggest="error_resilience"
2745 hap_decoder_select="snappy texturedsp"
2746 hap_encoder_deps="libsnappy"
2747 hap_encoder_select="texturedspenc"
2748 hevc_decoder_select="atsc_a53 bswapdsp cabac golomb hevcparse videodsp"
2749 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2750 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2751 hymt_decoder_select="huffyuv_decoder"
2752 iac_decoder_select="imc_decoder"
2753 imc_decoder_select="bswapdsp fft mdct sinewin"
2754 imm4_decoder_select="bswapdsp"
2755 imm5_decoder_select="h264_decoder hevc_decoder"
2756 indeo3_decoder_select="hpeldsp"
2757 indeo4_decoder_select="ividsp"
2758 indeo5_decoder_select="ividsp"
2759 interplay_video_decoder_select="hpeldsp"
2760 jpegls_decoder_select="mjpeg_decoder"
2761 jv_decoder_select="blockdsp"
2762 lagarith_decoder_select="llviddsp"
2763 ljpeg_encoder_select="idctdsp jpegtables mpegvideoenc"
2764 lscr_decoder_deps="zlib"
2765 magicyuv_decoder_select="llviddsp"
2766 magicyuv_encoder_select="llvidencdsp"
2767 mdec_decoder_select="blockdsp bswapdsp idctdsp mpegvideo"
2768 metasound_decoder_select="lsp mdct sinewin"
2769 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2770 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2771 mjpeg_encoder_select="jpegtables mpegvideoenc"
2772 mjpegb_decoder_select="mjpeg_decoder"
2773 mlp_decoder_select="mlp_parser"
2774 mlp_encoder_select="lpc audio_frame_queue"
2775 mobiclip_decoder_select="bswapdsp golomb"
2776 motionpixels_decoder_select="bswapdsp"
2777 mp1_decoder_select="mpegaudio"
2778 mp1float_decoder_select="mpegaudio"
2779 mp2_decoder_select="mpegaudio"
2780 mp2float_decoder_select="mpegaudio"
2781 mp3_decoder_select="mpegaudio"
2782 mp3adu_decoder_select="mpegaudio"
2783 mp3adufloat_decoder_select="mpegaudio"
2784 mp3float_decoder_select="mpegaudio"
2785 mp3on4_decoder_select="mpegaudio"
2786 mp3on4float_decoder_select="mpegaudio"
2787 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2788 mpc8_decoder_select="mpegaudiodsp"
2789 mpegvideo_decoder_select="mpegvideo"
2790 mpeg1video_decoder_select="mpegvideo"
2791 mpeg1video_encoder_select="mpegvideoenc h263dsp"
2792 mpeg2video_decoder_select="mpegvideo"
2793 mpeg2video_encoder_select="mpegvideoenc h263dsp"
2794 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2795 mpeg4_encoder_select="h263_encoder"
2796 msa1_decoder_select="mss34dsp"
2797 mscc_decoder_deps="zlib"
2798 msmpeg4v1_decoder_select="h263_decoder"
2799 msmpeg4v2_decoder_select="h263_decoder"
2800 msmpeg4v2_encoder_select="h263_encoder"
2801 msmpeg4v3_decoder_select="h263_decoder"
2802 msmpeg4v3_encoder_select="h263_encoder"
2803 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2804 mts2_decoder_select="mss34dsp"
2805 mv30_decoder_select="aandcttables blockdsp"
2806 mvha_decoder_deps="zlib"
2807 mvha_decoder_select="llviddsp"
2808 mwsc_decoder_deps="zlib"
2809 mxpeg_decoder_select="mjpeg_decoder"
2810 nellymoser_decoder_select="mdct sinewin"
2811 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2812 notchlc_decoder_select="lzf"
2813 nuv_decoder_select="idctdsp lzo"
2814 on2avc_decoder_select="mdct"
2815 opus_decoder_deps="swresample"
2816 opus_decoder_select="mdct15"
2817 opus_encoder_select="audio_frame_queue mdct15"
2818 png_decoder_deps="zlib"
2819 png_encoder_deps="zlib"
2820 png_encoder_select="llvidencdsp"
2821 prores_decoder_select="blockdsp idctdsp"
2822 prores_encoder_select="fdctdsp"
2823 qcelp_decoder_select="lsp"
2824 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2825 ra_144_decoder_select="audiodsp"
2826 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2827 ralf_decoder_select="golomb"
2828 rasc_decoder_deps="zlib"
2829 rawvideo_decoder_select="bswapdsp"
2830 rscc_decoder_deps="zlib"
2831 rtjpeg_decoder_select="me_cmp"
2832 rv10_decoder_select="h263_decoder"
2833 rv10_encoder_select="h263_encoder"
2834 rv20_decoder_select="h263_decoder"
2835 rv20_encoder_select="h263_encoder"
2836 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2837 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2838 screenpresso_decoder_deps="zlib"
2839 shorten_decoder_select="bswapdsp"
2840 sipr_decoder_select="lsp"
2841 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2842 snow_encoder_select="dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2843 sonic_decoder_select="golomb rangecoder"
2844 sonic_encoder_select="golomb rangecoder"
2845 sonic_ls_encoder_select="golomb rangecoder"
2846 sp5x_decoder_select="mjpeg_decoder"
2847 speedhq_decoder_select="mpegvideo"
2848 srgc_decoder_deps="zlib"
2849 svq1_decoder_select="hpeldsp"
2850 svq1_encoder_select="hpeldsp me_cmp mpegvideoenc"
2851 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2852 svq3_decoder_suggest="zlib"
2853 tak_decoder_select="audiodsp"
2854 tdsc_decoder_deps="zlib"
2855 tdsc_decoder_select="mjpeg_decoder"
2856 theora_decoder_select="vp3_decoder"
2857 thp_decoder_select="mjpeg_decoder"
2858 tiff_decoder_select="mjpeg_decoder"
2859 tiff_decoder_suggest="zlib lzma"
2860 tiff_encoder_suggest="zlib"
2861 truehd_decoder_select="mlp_parser"
2862 truehd_encoder_select="lpc audio_frame_queue"
2863 truemotion2_decoder_select="bswapdsp"
2864 truespeech_decoder_select="bswapdsp"
2865 tscc_decoder_deps="zlib"
2866 twinvq_decoder_select="mdct lsp sinewin"
2867 txd_decoder_select="texturedsp"
2868 utvideo_decoder_select="bswapdsp llviddsp"
2869 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2870 vble_decoder_select="llviddsp"
2871 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2872 vc1image_decoder_select="vc1_decoder"
2873 vorbis_decoder_select="mdct"
2874 vorbis_encoder_select="audio_frame_queue mdct"
2875 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2876 vp4_decoder_select="vp3_decoder"
2877 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2878 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2879 vp6a_decoder_select="vp6_decoder"
2880 vp6f_decoder_select="vp6_decoder"
2881 vp7_decoder_select="h264pred videodsp vp8dsp"
2882 vp8_decoder_select="h264pred videodsp vp8dsp"
2883 vp9_decoder_select="videodsp vp9_parser vp9_superframe_split_bsf"
2884 wcmv_decoder_deps="zlib"
2885 webp_decoder_select="vp8_decoder exif"
2886 wmalossless_decoder_select="llauddsp"
2887 wmapro_decoder_select="mdct sinewin wma_freqs"
2888 wmav1_decoder_select="mdct sinewin wma_freqs"
2889 wmav1_encoder_select="mdct sinewin wma_freqs"
2890 wmav2_decoder_select="mdct sinewin wma_freqs"
2891 wmav2_encoder_select="mdct sinewin wma_freqs"
2892 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2893 wmv1_decoder_select="h263_decoder"
2894 wmv1_encoder_select="h263_encoder"
2895 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2896 wmv2_encoder_select="h263_encoder wmv2dsp"
2897 wmv3_decoder_select="vc1_decoder"
2898 wmv3image_decoder_select="wmv3_decoder"
2899 xma1_decoder_select="wmapro_decoder"
2900 xma2_decoder_select="wmapro_decoder"
2901 ylc_decoder_select="bswapdsp"
2902 zerocodec_decoder_deps="zlib"
2903 zlib_decoder_deps="zlib"
2904 zlib_encoder_deps="zlib"
2905 zmbv_decoder_deps="zlib"
2906 zmbv_encoder_deps="zlib"
2907
2908 # hardware accelerators
2909 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2910 cuda_deps="ffnvcodec"
2911 cuvid_deps="ffnvcodec"
2912 d3d11va_deps="dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2913 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32 user32"
2914 ffnvcodec_deps_any="libdl LoadLibrary"
2915 nvdec_deps="ffnvcodec"
2916 vaapi_x11_deps="xlib"
2917 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2918 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2919 xvmc_deps="X11_extensions_XvMClib_h"
2920
2921 av1_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_AV1"
2922 av1_d3d11va_hwaccel_select="av1_decoder"
2923 av1_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_AV1"
2924 av1_d3d11va2_hwaccel_select="av1_decoder"
2925 av1_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_AV1"
2926 av1_dxva2_hwaccel_select="av1_decoder"
2927 av1_nvdec_hwaccel_deps="nvdec CUVIDAV1PICPARAMS"
2928 av1_nvdec_hwaccel_select="av1_decoder"
2929 av1_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferAV1_bit_depth_idx"
2930 av1_vaapi_hwaccel_select="av1_decoder"
2931 h263_vaapi_hwaccel_deps="vaapi"
2932 h263_vaapi_hwaccel_select="h263_decoder"
2933 h263_videotoolbox_hwaccel_deps="videotoolbox"
2934 h263_videotoolbox_hwaccel_select="h263_decoder"
2935 h264_d3d11va_hwaccel_deps="d3d11va"
2936 h264_d3d11va_hwaccel_select="h264_decoder"
2937 h264_d3d11va2_hwaccel_deps="d3d11va"
2938 h264_d3d11va2_hwaccel_select="h264_decoder"
2939 h264_dxva2_hwaccel_deps="dxva2"
2940 h264_dxva2_hwaccel_select="h264_decoder"
2941 h264_nvdec_hwaccel_deps="nvdec"
2942 h264_nvdec_hwaccel_select="h264_decoder"
2943 h264_vaapi_hwaccel_deps="vaapi"
2944 h264_vaapi_hwaccel_select="h264_decoder"
2945 h264_vdpau_hwaccel_deps="vdpau"
2946 h264_vdpau_hwaccel_select="h264_decoder"
2947 h264_videotoolbox_hwaccel_deps="videotoolbox"
2948 h264_videotoolbox_hwaccel_select="h264_decoder"
2949 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2950 hevc_d3d11va_hwaccel_select="hevc_decoder"
2951 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2952 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2953 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2954 hevc_dxva2_hwaccel_select="hevc_decoder"
2955 hevc_nvdec_hwaccel_deps="nvdec"
2956 hevc_nvdec_hwaccel_select="hevc_decoder"
2957 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2958 hevc_vaapi_hwaccel_select="hevc_decoder"
2959 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2960 hevc_vdpau_hwaccel_select="hevc_decoder"
2961 hevc_videotoolbox_hwaccel_deps="videotoolbox"
2962 hevc_videotoolbox_hwaccel_select="hevc_decoder"
2963 mjpeg_nvdec_hwaccel_deps="nvdec"
2964 mjpeg_nvdec_hwaccel_select="mjpeg_decoder"
2965 mjpeg_vaapi_hwaccel_deps="vaapi"
2966 mjpeg_vaapi_hwaccel_select="mjpeg_decoder"
2967 mpeg_xvmc_hwaccel_deps="xvmc"
2968 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2969 mpeg1_nvdec_hwaccel_deps="nvdec"
2970 mpeg1_nvdec_hwaccel_select="mpeg1video_decoder"
2971 mpeg1_vdpau_hwaccel_deps="vdpau"
2972 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2973 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2974 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2975 mpeg1_xvmc_hwaccel_deps="xvmc"
2976 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2977 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2978 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2979 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2980 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2981 mpeg2_dxva2_hwaccel_deps="dxva2"
2982 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2983 mpeg2_nvdec_hwaccel_deps="nvdec"
2984 mpeg2_nvdec_hwaccel_select="mpeg2video_decoder"
2985 mpeg2_vaapi_hwaccel_deps="vaapi"
2986 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2987 mpeg2_vdpau_hwaccel_deps="vdpau"
2988 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2989 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2990 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2991 mpeg2_xvmc_hwaccel_deps="xvmc"
2992 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2993 mpeg4_nvdec_hwaccel_deps="nvdec"
2994 mpeg4_nvdec_hwaccel_select="mpeg4_decoder"
2995 mpeg4_vaapi_hwaccel_deps="vaapi"
2996 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2997 mpeg4_vdpau_hwaccel_deps="vdpau"
2998 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2999 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
3000 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
3001 vc1_d3d11va_hwaccel_deps="d3d11va"
3002 vc1_d3d11va_hwaccel_select="vc1_decoder"
3003 vc1_d3d11va2_hwaccel_deps="d3d11va"
3004 vc1_d3d11va2_hwaccel_select="vc1_decoder"
3005 vc1_dxva2_hwaccel_deps="dxva2"
3006 vc1_dxva2_hwaccel_select="vc1_decoder"
3007 vc1_nvdec_hwaccel_deps="nvdec"
3008 vc1_nvdec_hwaccel_select="vc1_decoder"
3009 vc1_vaapi_hwaccel_deps="vaapi"
3010 vc1_vaapi_hwaccel_select="vc1_decoder"
3011 vc1_vdpau_hwaccel_deps="vdpau"
3012 vc1_vdpau_hwaccel_select="vc1_decoder"
3013 vp8_nvdec_hwaccel_deps="nvdec"
3014 vp8_nvdec_hwaccel_select="vp8_decoder"
3015 vp8_vaapi_hwaccel_deps="vaapi"
3016 vp8_vaapi_hwaccel_select="vp8_decoder"
3017 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
3018 vp9_d3d11va_hwaccel_select="vp9_decoder"
3019 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
3020 vp9_d3d11va2_hwaccel_select="vp9_decoder"
3021 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
3022 vp9_dxva2_hwaccel_select="vp9_decoder"
3023 vp9_nvdec_hwaccel_deps="nvdec"
3024 vp9_nvdec_hwaccel_select="vp9_decoder"
3025 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
3026 vp9_vaapi_hwaccel_select="vp9_decoder"
3027 vp9_vdpau_hwaccel_deps="vdpau VdpPictureInfoVP9"
3028 vp9_vdpau_hwaccel_select="vp9_decoder"
3029 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
3030 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
3031 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
3032 wmv3_nvdec_hwaccel_select="vc1_nvdec_hwaccel"
3033 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
3034 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
3035
3036 # hardware-accelerated codecs
3037 mediafoundation_deps="mftransform_h MFCreateAlignedMemoryBuffer"
3038 mediafoundation_extralibs="-lmfplat -lmfuuid -lole32 -lstrmiids"
3039 omx_deps="libdl pthreads"
3040 omx_rpi_select="omx"
3041 qsv_deps="libmfx"
3042 qsvdec_select="qsv"
3043 qsvenc_select="qsv"
3044 qsvvpp_select="qsv"
3045 vaapi_encode_deps="vaapi"
3046 v4l2_m2m_deps="linux_videodev2_h sem_timedwait"
3047
3048 hwupload_cuda_filter_deps="ffnvcodec"
3049 scale_npp_filter_deps="ffnvcodec libnpp"
3050 scale_cuda_filter_deps="ffnvcodec"
3051 scale_cuda_filter_deps_any="cuda_nvcc cuda_llvm"
3052 thumbnail_cuda_filter_deps="ffnvcodec"
3053 thumbnail_cuda_filter_deps_any="cuda_nvcc cuda_llvm"
3054 transpose_npp_filter_deps="ffnvcodec libnpp"
3055 overlay_cuda_filter_deps="ffnvcodec"
3056 overlay_cuda_filter_deps_any="cuda_nvcc cuda_llvm"
3057
3058 amf_deps_any="libdl LoadLibrary"
3059 nvenc_deps="ffnvcodec"
3060 nvenc_deps_any="libdl LoadLibrary"
3061 nvenc_encoder_deps="nvenc"
3062
3063 aac_mf_encoder_deps="mediafoundation"
3064 ac3_mf_encoder_deps="mediafoundation"
3065 av1_cuvid_decoder_deps="cuvid CUVIDAV1PICPARAMS"
3066 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
3067 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
3068 h264_amf_encoder_deps="amf"
3069 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
3070 h264_cuvid_decoder_deps="cuvid"
3071 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
3072 h264_mediacodec_decoder_deps="mediacodec"
3073 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
3074 h264_mf_encoder_deps="mediafoundation"
3075 h264_mmal_decoder_deps="mmal"
3076 h264_nvenc_encoder_deps="nvenc"
3077 h264_nvenc_encoder_select="atsc_a53"
3078 h264_omx_encoder_deps="omx"
3079 h264_qsv_decoder_select="h264_mp4toannexb_bsf qsvdec"
3080 h264_qsv_encoder_select="atsc_a53 qsvenc"
3081 h264_rkmpp_decoder_deps="rkmpp"
3082 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
3083 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
3084 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
3085 h264_v4l2m2m_decoder_select="h264_mp4toannexb_bsf"
3086 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
3087 hevc_amf_encoder_deps="amf"
3088 hevc_cuvid_decoder_deps="cuvid"
3089 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
3090 hevc_mediacodec_decoder_deps="mediacodec"
3091 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
3092 hevc_mf_encoder_deps="mediafoundation"
3093 hevc_nvenc_encoder_deps="nvenc"
3094 hevc_nvenc_encoder_select="atsc_a53"
3095 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf qsvdec"
3096 hevc_qsv_encoder_select="hevcparse qsvenc"
3097 hevc_rkmpp_decoder_deps="rkmpp"
3098 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
3099 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
3100 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
3101 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
3102 hevc_v4l2m2m_decoder_select="hevc_mp4toannexb_bsf"
3103 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
3104 mjpeg_cuvid_decoder_deps="cuvid"
3105 mjpeg_qsv_decoder_select="qsvdec"
3106 mjpeg_qsv_encoder_deps="libmfx"
3107 mjpeg_qsv_encoder_select="qsvenc"
3108 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
3109 mjpeg_vaapi_encoder_select="cbs_jpeg jpegtables vaapi_encode"
3110 mp3_mf_encoder_deps="mediafoundation"
3111 mpeg1_cuvid_decoder_deps="cuvid"
3112 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
3113 mpeg2_crystalhd_decoder_select="crystalhd"
3114 mpeg2_cuvid_decoder_deps="cuvid"
3115 mpeg2_mmal_decoder_deps="mmal"
3116 mpeg2_mediacodec_decoder_deps="mediacodec"
3117 mpeg2_qsv_decoder_select="qsvdec"
3118 mpeg2_qsv_encoder_select="qsvenc"
3119 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
3120 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
3121 mpeg4_crystalhd_decoder_select="crystalhd"
3122 mpeg4_cuvid_decoder_deps="cuvid"
3123 mpeg4_mediacodec_decoder_deps="mediacodec"
3124 mpeg4_mmal_decoder_deps="mmal"
3125 mpeg4_omx_encoder_deps="omx"
3126 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
3127 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
3128 msmpeg4_crystalhd_decoder_select="crystalhd"
3129 nvenc_h264_encoder_select="h264_nvenc_encoder"
3130 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
3131 vc1_crystalhd_decoder_select="crystalhd"
3132 vc1_cuvid_decoder_deps="cuvid"
3133 vc1_mmal_decoder_deps="mmal"
3134 vc1_qsv_decoder_select="qsvdec"
3135 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
3136 vp8_cuvid_decoder_deps="cuvid"
3137 vp8_mediacodec_decoder_deps="mediacodec"
3138 vp8_qsv_decoder_select="qsvdec"
3139 vp8_rkmpp_decoder_deps="rkmpp"
3140 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
3141 vp8_vaapi_encoder_select="vaapi_encode"
3142 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
3143 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
3144 vp9_cuvid_decoder_deps="cuvid"
3145 vp9_mediacodec_decoder_deps="mediacodec"
3146 vp9_qsv_decoder_select="qsvdec"
3147 vp9_rkmpp_decoder_deps="rkmpp"
3148 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
3149 vp9_vaapi_encoder_select="vaapi_encode"
3150 vp9_qsv_encoder_deps="libmfx MFX_CODEC_VP9"
3151 vp9_qsv_encoder_select="qsvenc"
3152 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
3153 wmv3_crystalhd_decoder_select="crystalhd"
3154 av1_qsv_decoder_select="qsvdec"
3155
3156 # parsers
3157 aac_parser_select="adts_header"
3158 av1_parser_select="cbs_av1"
3159 h264_parser_select="atsc_a53 golomb h264dsp h264parse"
3160 hevc_parser_select="hevcparse"
3161 mpegaudio_parser_select="mpegaudioheader"
3162 mpegvideo_parser_select="mpegvideo"
3163 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
3164 vc1_parser_select="vc1dsp"
3165
3166 # bitstream_filters
3167 aac_adtstoasc_bsf_select="adts_header"
3168 av1_frame_merge_bsf_select="cbs_av1"
3169 av1_frame_split_bsf_select="cbs_av1"
3170 av1_metadata_bsf_select="cbs_av1"
3171 eac3_core_bsf_select="ac3_parser"
3172 filter_units_bsf_select="cbs"
3173 h264_metadata_bsf_deps="const_nan"
3174 h264_metadata_bsf_select="cbs_h264"
3175 h264_redundant_pps_bsf_select="cbs_h264"
3176 hevc_metadata_bsf_select="cbs_h265"
3177 mjpeg2jpeg_bsf_select="jpegtables"
3178 mpeg2_metadata_bsf_select="cbs_mpeg2"
3179 trace_headers_bsf_select="cbs"
3180 vp9_metadata_bsf_select="cbs_vp9"
3181
3182 # external libraries
3183 aac_at_decoder_deps="audiotoolbox"
3184 aac_at_decoder_select="aac_adtstoasc_bsf"
3185 ac3_at_decoder_deps="audiotoolbox"
3186 ac3_at_decoder_select="ac3_parser"
3187 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
3188 alac_at_decoder_deps="audiotoolbox"
3189 amr_nb_at_decoder_deps="audiotoolbox"
3190 avisynth_deps_any="libdl LoadLibrary"
3191 avisynth_demuxer_deps="avisynth"
3192 avisynth_demuxer_select="riffdec"
3193 eac3_at_decoder_deps="audiotoolbox"
3194 eac3_at_decoder_select="ac3_parser"
3195 gsm_ms_at_decoder_deps="audiotoolbox"
3196 ilbc_at_decoder_deps="audiotoolbox"
3197 mp1_at_decoder_deps="audiotoolbox"
3198 mp2_at_decoder_deps="audiotoolbox"
3199 mp3_at_decoder_deps="audiotoolbox"
3200 mp1_at_decoder_select="mpegaudioheader"
3201 mp2_at_decoder_select="mpegaudioheader"
3202 mp3_at_decoder_select="mpegaudioheader"
3203 pcm_alaw_at_decoder_deps="audiotoolbox"
3204 pcm_mulaw_at_decoder_deps="audiotoolbox"
3205 qdmc_decoder_select="fft"
3206 qdmc_at_decoder_deps="audiotoolbox"
3207 qdm2_at_decoder_deps="audiotoolbox"
3208 aac_at_encoder_deps="audiotoolbox"
3209 aac_at_encoder_select="audio_frame_queue"
3210 alac_at_encoder_deps="audiotoolbox"
3211 alac_at_encoder_select="audio_frame_queue"
3212 ilbc_at_encoder_deps="audiotoolbox"
3213 ilbc_at_encoder_select="audio_frame_queue"
3214 pcm_alaw_at_encoder_deps="audiotoolbox"
3215 pcm_alaw_at_encoder_select="audio_frame_queue"
3216 pcm_mulaw_at_encoder_deps="audiotoolbox"
3217 pcm_mulaw_at_encoder_select="audio_frame_queue"
3218 chromaprint_muxer_deps="chromaprint"
3219 h264_videotoolbox_encoder_deps="pthreads"
3220 h264_videotoolbox_encoder_select="atsc_a53 videotoolbox_encoder"
3221 hevc_videotoolbox_encoder_deps="pthreads"
3222 hevc_videotoolbox_encoder_select="atsc_a53 videotoolbox_encoder"
3223 libaom_av1_decoder_deps="libaom"
3224 libaom_av1_encoder_deps="libaom"
3225 libaom_av1_encoder_select="extract_extradata_bsf"
3226 libaribb24_decoder_deps="libaribb24"
3227 libcelt_decoder_deps="libcelt"
3228 libcodec2_decoder_deps="libcodec2"
3229 libcodec2_encoder_deps="libcodec2"
3230 libdav1d_decoder_deps="libdav1d"
3231 libdav1d_decoder_select="atsc_a53"
3232 libdavs2_decoder_deps="libdavs2"
3233 libfdk_aac_decoder_deps="libfdk_aac"
3234 libfdk_aac_encoder_deps="libfdk_aac"
3235 libfdk_aac_encoder_select="audio_frame_queue"
3236 libgme_demuxer_deps="libgme"
3237 libgsm_decoder_deps="libgsm"
3238 libgsm_encoder_deps="libgsm"
3239 libgsm_ms_decoder_deps="libgsm"
3240 libgsm_ms_encoder_deps="libgsm"
3241 libilbc_decoder_deps="libilbc"
3242 libilbc_encoder_deps="libilbc"
3243 libkvazaar_encoder_deps="libkvazaar"
3244 libmodplug_demuxer_deps="libmodplug"
3245 libmp3lame_encoder_deps="libmp3lame"
3246 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
3247 libopencore_amrnb_decoder_deps="libopencore_amrnb"
3248 libopencore_amrnb_encoder_deps="libopencore_amrnb"
3249 libopencore_amrnb_encoder_select="audio_frame_queue"
3250 libopencore_amrwb_decoder_deps="libopencore_amrwb"
3251 libopenh264_decoder_deps="libopenh264"
3252 libopenh264_decoder_select="h264_mp4toannexb_bsf"
3253 libopenh264_encoder_deps="libopenh264"
3254 libopenjpeg_decoder_deps="libopenjpeg"
3255 libopenjpeg_encoder_deps="libopenjpeg"
3256 libopenmpt_demuxer_deps="libopenmpt"
3257 libopus_decoder_deps="libopus"
3258 libopus_encoder_deps="libopus"
3259 libopus_encoder_select="audio_frame_queue"
3260 librav1e_encoder_deps="librav1e"
3261 librav1e_encoder_select="extract_extradata_bsf"
3262 librsvg_decoder_deps="librsvg"
3263 libshine_encoder_deps="libshine"
3264 libshine_encoder_select="audio_frame_queue"
3265 libspeex_decoder_deps="libspeex"
3266 libspeex_encoder_deps="libspeex"
3267 libspeex_encoder_select="audio_frame_queue"
3268 libsvtav1_encoder_deps="libsvtav1"
3269 libtheora_encoder_deps="libtheora"
3270 libtwolame_encoder_deps="libtwolame"
3271 libuavs3d_decoder_deps="libuavs3d"
3272 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
3273 libvorbis_decoder_deps="libvorbis"
3274 libvorbis_encoder_deps="libvorbis libvorbisenc"
3275 libvorbis_encoder_select="audio_frame_queue"
3276 libvpx_vp8_decoder_deps="libvpx"
3277 libvpx_vp8_encoder_deps="libvpx"
3278 libvpx_vp9_decoder_deps="libvpx"
3279 libvpx_vp9_encoder_deps="libvpx"
3280 libwebp_encoder_deps="libwebp"
3281 libwebp_anim_encoder_deps="libwebp"
3282 libx262_encoder_deps="libx262"
3283 libx264_encoder_deps="libx264"
3284 libx264_encoder_select="atsc_a53"
3285 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
3286 libx264rgb_encoder_select="libx264_encoder"
3287 libx265_encoder_deps="libx265"
3288 libxavs_encoder_deps="libxavs"
3289 libxavs2_encoder_deps="libxavs2"
3290 libxvid_encoder_deps="libxvid"
3291 libzvbi_teletext_decoder_deps="libzvbi"
3292 vapoursynth_demuxer_deps="vapoursynth"
3293 videotoolbox_suggest="coreservices"
3294 videotoolbox_deps="corefoundation coremedia corevideo"
3295 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
3296
3297 # demuxers / muxers
3298 ac3_demuxer_select="ac3_parser"
3299 act_demuxer_select="riffdec"
3300 aiff_muxer_select="iso_media"
3301 asf_demuxer_select="riffdec"
3302 asf_o_demuxer_select="riffdec"
3303 asf_muxer_select="riffenc"
3304 asf_stream_muxer_select="asf_muxer"
3305 av1_demuxer_select="av1_frame_merge_bsf av1_parser"
3306 avi_demuxer_select="iso_media riffdec exif"
3307 avi_muxer_select="riffenc"
3308 caf_demuxer_select="iso_media riffdec"
3309 caf_muxer_select="iso_media"
3310 dash_muxer_select="mp4_muxer"
3311 dash_demuxer_deps="libxml2"
3312 dirac_demuxer_select="dirac_parser"
3313 dts_demuxer_select="dca_parser"
3314 dtshd_demuxer_select="dca_parser"
3315 dv_demuxer_select="dvprofile"
3316 dv_muxer_select="dvprofile"
3317 dxa_demuxer_select="riffdec"
3318 eac3_demuxer_select="ac3_parser"
3319 f4v_muxer_select="mov_muxer"
3320 fifo_muxer_deps="threads"
3321 flac_demuxer_select="flac_parser"
3322 flv_muxer_select="aac_adtstoasc_bsf"
3323 gxf_muxer_select="pcm_rechunk_bsf"
3324 hds_muxer_select="flv_muxer"
3325 hls_muxer_select="mpegts_muxer"
3326 hls_muxer_suggest="gcrypt openssl"
3327 image2_alias_pix_demuxer_select="image2_demuxer"
3328 image2_brender_pix_demuxer_select="image2_demuxer"
3329 ipod_muxer_select="mov_muxer"
3330 ismv_muxer_select="mov_muxer"
3331 ivf_muxer_select="av1_metadata_bsf vp9_superframe_bsf"
3332 latm_muxer_select="aac_adtstoasc_bsf"
3333 matroska_audio_muxer_select="matroska_muxer"
3334 matroska_demuxer_select="iso_media riffdec"
3335 matroska_demuxer_suggest="bzlib lzo zlib"
3336 matroska_muxer_select="iso_media riffenc vp9_superframe_bsf aac_adtstoasc_bsf"
3337 mlp_demuxer_select="mlp_parser"
3338 mmf_muxer_select="riffenc"
3339 mov_demuxer_select="iso_media riffdec"
3340 mov_demuxer_suggest="zlib"
3341 mov_muxer_select="iso_media riffenc rtpenc_chain vp9_superframe_bsf aac_adtstoasc_bsf"
3342 mp3_demuxer_select="mpegaudio_parser"
3343 mp3_muxer_select="mpegaudioheader"
3344 mp4_muxer_select="mov_muxer"
3345 mpegts_demuxer_select="iso_media"
3346 mpegts_muxer_select="ac3_parser adts_muxer latm_muxer h264_mp4toannexb_bsf hevc_mp4toannexb_bsf"
3347 mpegtsraw_demuxer_select="mpegts_demuxer"
3348 mxf_muxer_select="golomb pcm_rechunk_bsf"
3349 mxf_d10_muxer_select="mxf_muxer"
3350 mxf_opatom_muxer_select="mxf_muxer"
3351 nut_muxer_select="riffenc"
3352 nuv_demuxer_select="riffdec"
3353 obu_demuxer_select="av1_frame_merge_bsf av1_parser"
3354 oga_muxer_select="ogg_muxer"
3355 ogg_demuxer_select="dirac_parse"
3356 ogv_muxer_select="ogg_muxer"
3357 opus_muxer_select="ogg_muxer"
3358 psp_muxer_select="mov_muxer"
3359 rtp_demuxer_select="sdp_demuxer"
3360 rtp_muxer_select="golomb jpegtables"
3361 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3362 rtsp_demuxer_select="http_protocol rtpdec"
3363 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3364 sap_demuxer_select="sdp_demuxer"
3365 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3366 sdp_demuxer_select="rtpdec"
3367 smoothstreaming_muxer_select="ismv_muxer"
3368 spdif_demuxer_select="adts_header"
3369 spdif_muxer_select="adts_header"
3370 spx_muxer_select="ogg_muxer"
3371 swf_demuxer_suggest="zlib"
3372 tak_demuxer_select="tak_parser"
3373 truehd_demuxer_select="mlp_parser"
3374 tg2_muxer_select="mov_muxer"
3375 tgp_muxer_select="mov_muxer"
3376 vobsub_demuxer_select="mpegps_demuxer"
3377 w64_demuxer_select="wav_demuxer"
3378 w64_muxer_select="wav_muxer"
3379 wav_demuxer_select="riffdec"
3380 wav_muxer_select="riffenc"
3381 webm_chunk_muxer_select="webm_muxer"
3382 webm_muxer_select="iso_media riffenc"
3383 webm_dash_manifest_demuxer_select="matroska_demuxer"
3384 wtv_demuxer_select="mpegts_demuxer riffdec"
3385 wtv_muxer_select="mpegts_muxer riffenc"
3386 xmv_demuxer_select="riffdec"
3387 xwma_demuxer_select="riffdec"
3388
3389 # indevs / outdevs
3390 android_camera_indev_deps="android camera2ndk mediandk pthreads"
3391 android_camera_indev_extralibs="-landroid -lcamera2ndk -lmediandk"
3392 alsa_indev_deps="alsa"
3393 alsa_outdev_deps="alsa"
3394 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3395 avfoundation_indev_suggest="coregraphics applicationservices"
3396 avfoundation_indev_extralibs="-framework Foundation"
3397 audiotoolbox_outdev_deps="audiotoolbox pthreads"
3398 audiotoolbox_outdev_extralibs="-framework AudioToolbox -framework CoreAudio"
3399 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3400 caca_outdev_deps="libcaca"
3401 decklink_deps_any="libdl LoadLibrary"
3402 decklink_indev_deps="decklink threads"
3403 decklink_indev_extralibs="-lstdc++"
3404 decklink_outdev_deps="decklink threads"
3405 decklink_outdev_suggest="libklvanc"
3406 decklink_outdev_extralibs="-lstdc++"
3407 dshow_indev_deps="IBaseFilter"
3408 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3409 fbdev_indev_deps="linux_fb_h"
3410 fbdev_outdev_deps="linux_fb_h"
3411 gdigrab_indev_deps="CreateDIBSection"
3412 gdigrab_indev_extralibs="-lgdi32"
3413 gdigrab_indev_select="bmp_decoder"
3414 iec61883_indev_deps="libiec61883"
3415 jack_indev_deps="libjack"
3416 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3417 kmsgrab_indev_deps="libdrm"
3418 lavfi_indev_deps="avfilter"
3419 libcdio_indev_deps="libcdio"
3420 libdc1394_indev_deps="libdc1394"
3421 openal_indev_deps="openal"
3422 opengl_outdev_deps="opengl"
3423 opengl_outdev_suggest="sdl2"
3424 oss_indev_deps_any="sys_soundcard_h"
3425 oss_outdev_deps_any="sys_soundcard_h"
3426 pulse_indev_deps="libpulse"
3427 pulse_outdev_deps="libpulse"
3428 sdl2_outdev_deps="sdl2"
3429 sndio_indev_deps="sndio"
3430 sndio_outdev_deps="sndio"
3431 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3432 v4l2_indev_suggest="libv4l2"
3433 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3434 v4l2_outdev_suggest="libv4l2"
3435 vfwcap_indev_deps="vfw32 vfwcap_defines"
3436 xcbgrab_indev_deps="libxcb"
3437 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3438 xv_outdev_deps="xlib"
3439
3440 # protocols
3441 async_protocol_deps="threads"
3442 bluray_protocol_deps="libbluray"
3443 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3444 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl mbedtls"
3445 ffrtmpcrypt_protocol_select="tcp_protocol"
3446 ffrtmphttp_protocol_conflict="librtmp_protocol"
3447 ffrtmphttp_protocol_select="http_protocol"
3448 ftp_protocol_select="tcp_protocol"
3449 gopher_protocol_select="network"
3450 http_protocol_select="tcp_protocol"
3451 http_protocol_suggest="zlib"
3452 httpproxy_protocol_select="tcp_protocol"
3453 httpproxy_protocol_suggest="zlib"
3454 https_protocol_select="tls_protocol"
3455 https_protocol_suggest="zlib"
3456 icecast_protocol_select="http_protocol"
3457 mmsh_protocol_select="http_protocol"
3458 mmst_protocol_select="network"
3459 rtmp_protocol_conflict="librtmp_protocol"
3460 rtmp_protocol_select="tcp_protocol"
3461 rtmp_protocol_suggest="zlib"
3462 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3463 rtmpe_protocol_suggest="zlib"
3464 rtmps_protocol_conflict="librtmp_protocol"
3465 rtmps_protocol_select="tls_protocol"
3466 rtmps_protocol_suggest="zlib"
3467 rtmpt_protocol_select="ffrtmphttp_protocol"
3468 rtmpt_protocol_suggest="zlib"
3469 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3470 rtmpte_protocol_suggest="zlib"
3471 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3472 rtmpts_protocol_suggest="zlib"
3473 rtp_protocol_select="udp_protocol"
3474 schannel_conflict="openssl gnutls libtls mbedtls"
3475 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3476 sctp_protocol_select="network"
3477 securetransport_conflict="openssl gnutls libtls mbedtls"
3478 srtp_protocol_select="rtp_protocol srtp"
3479 tcp_protocol_select="network"
3480 tls_protocol_deps_any="gnutls openssl schannel securetransport libtls mbedtls"
3481 tls_protocol_select="tcp_protocol"
3482 udp_protocol_select="network"
3483 udplite_protocol_select="network"
3484 unix_protocol_deps="sys_un_h"
3485 unix_protocol_select="network"
3486
3487 # external library protocols
3488 libamqp_protocol_deps="librabbitmq"
3489 libamqp_protocol_select="network"
3490 librtmp_protocol_deps="librtmp"
3491 librtmpe_protocol_deps="librtmp"
3492 librtmps_protocol_deps="librtmp"
3493 librtmpt_protocol_deps="librtmp"
3494 librtmpte_protocol_deps="librtmp"
3495 libsmbclient_protocol_deps="libsmbclient gplv3"
3496 libsrt_protocol_deps="libsrt"
3497 libsrt_protocol_select="network"
3498 libssh_protocol_deps="libssh"
3499 libtls_conflict="openssl gnutls mbedtls"
3500 libzmq_protocol_deps="libzmq"
3501 libzmq_protocol_select="network"
3502
3503 # filters
3504 afftdn_filter_deps="avcodec"
3505 afftdn_filter_select="fft"
3506 afftfilt_filter_deps="avcodec"
3507 afftfilt_filter_select="fft"
3508 afir_filter_deps="avcodec"
3509 afir_filter_select="rdft"
3510 amovie_filter_deps="avcodec avformat"
3511 aresample_filter_deps="swresample"
3512 asoftclip_filter_deps="swresample"
3513 asr_filter_deps="pocketsphinx"
3514 ass_filter_deps="libass"
3515 atempo_filter_deps="avcodec"
3516 atempo_filter_select="rdft"
3517 avgblur_opencl_filter_deps="opencl"
3518 avgblur_vulkan_filter_deps="vulkan libglslang"
3519 azmq_filter_deps="libzmq"
3520 blackframe_filter_deps="gpl"
3521 bm3d_filter_deps="avcodec"
3522 bm3d_filter_select="dct"
3523 boxblur_filter_deps="gpl"
3524 boxblur_opencl_filter_deps="opencl gpl"
3525 bs2b_filter_deps="libbs2b"
3526 chromaber_vulkan_filter_deps="vulkan libglslang"
3527 colorkey_opencl_filter_deps="opencl"
3528 colormatrix_filter_deps="gpl"
3529 convolution_opencl_filter_deps="opencl"
3530 convolve_filter_deps="avcodec"
3531 convolve_filter_select="fft"
3532 coreimage_filter_deps="coreimage appkit"
3533 coreimage_filter_extralibs="-framework OpenGL"
3534 coreimagesrc_filter_deps="coreimage appkit"
3535 coreimagesrc_filter_extralibs="-framework OpenGL"
3536 cover_rect_filter_deps="avcodec avformat gpl"
3537 cropdetect_filter_deps="gpl"
3538 deconvolve_filter_deps="avcodec"
3539 deconvolve_filter_select="fft"
3540 deinterlace_qsv_filter_deps="libmfx"
3541 deinterlace_vaapi_filter_deps="vaapi"
3542 delogo_filter_deps="gpl"
3543 denoise_vaapi_filter_deps="vaapi"
3544 derain_filter_select="dnn"
3545 deshake_filter_select="pixelutils"
3546 deshake_opencl_filter_deps="opencl"
3547 dilation_opencl_filter_deps="opencl"
3548 dnn_processing_filter_select="dnn"
3549 drawtext_filter_deps="libfreetype"
3550 drawtext_filter_suggest="libfontconfig libfribidi"
3551 elbg_filter_deps="avcodec"
3552 eq_filter_deps="gpl"
3553 erosion_opencl_filter_deps="opencl"
3554 fftfilt_filter_deps="avcodec"
3555 fftfilt_filter_select="rdft"
3556 fftdnoiz_filter_deps="avcodec"
3557 fftdnoiz_filter_select="fft"
3558 find_rect_filter_deps="avcodec avformat gpl"
3559 firequalizer_filter_deps="avcodec"
3560 firequalizer_filter_select="rdft"
3561 flite_filter_deps="libflite"
3562 framerate_filter_select="scene_sad"
3563 freezedetect_filter_select="scene_sad"
3564 frei0r_filter_deps="frei0r libdl"
3565 frei0r_src_filter_deps="frei0r libdl"
3566 fspp_filter_deps="gpl"
3567 headphone_filter_select="fft"
3568 histeq_filter_deps="gpl"
3569 hqdn3d_filter_deps="gpl"
3570 interlace_filter_deps="gpl"
3571 kerndeint_filter_deps="gpl"
3572 ladspa_filter_deps="ladspa libdl"
3573 lensfun_filter_deps="liblensfun version3"
3574 lv2_filter_deps="lv2"
3575 mcdeint_filter_deps="avcodec gpl"
3576 movie_filter_deps="avcodec avformat"
3577 mpdecimate_filter_deps="gpl"
3578 mpdecimate_filter_select="pixelutils"
3579 minterpolate_filter_select="scene_sad"
3580 mptestsrc_filter_deps="gpl"
3581 negate_filter_deps="lut_filter"
3582 nlmeans_opencl_filter_deps="opencl"
3583 nnedi_filter_deps="gpl"
3584 ocr_filter_deps="libtesseract"
3585 ocv_filter_deps="libopencv"
3586 openclsrc_filter_deps="opencl"
3587 overlay_opencl_filter_deps="opencl"
3588 overlay_qsv_filter_deps="libmfx"
3589 overlay_qsv_filter_select="qsvvpp"
3590 overlay_vulkan_filter_deps="vulkan libglslang"
3591 owdenoise_filter_deps="gpl"
3592 pad_opencl_filter_deps="opencl"
3593 pan_filter_deps="swresample"
3594 perspective_filter_deps="gpl"
3595 phase_filter_deps="gpl"
3596 pp7_filter_deps="gpl"
3597 pp_filter_deps="gpl postproc"
3598 prewitt_opencl_filter_deps="opencl"
3599 procamp_vaapi_filter_deps="vaapi"
3600 program_opencl_filter_deps="opencl"
3601 pullup_filter_deps="gpl"
3602 removelogo_filter_deps="avcodec avformat swscale"
3603 repeatfields_filter_deps="gpl"
3604 resample_filter_deps="avresample"
3605 roberts_opencl_filter_deps="opencl"
3606 rubberband_filter_deps="librubberband"
3607 sab_filter_deps="gpl swscale"
3608 scale2ref_filter_deps="swscale"
3609 scale_filter_deps="swscale"
3610 scale_qsv_filter_deps="libmfx"
3611 scdet_filter_select="scene_sad"
3612 select_filter_select="scene_sad"
3613 sharpness_vaapi_filter_deps="vaapi"
3614 showcqt_filter_deps="avcodec avformat swscale"
3615 showcqt_filter_suggest="libfontconfig libfreetype"
3616 showcqt_filter_select="fft"
3617 showfreqs_filter_deps="avcodec"
3618 showfreqs_filter_select="fft"
3619 showspatial_filter_select="fft"
3620 showspectrum_filter_deps="avcodec"
3621 showspectrum_filter_select="fft"
3622 showspectrumpic_filter_deps="avcodec"
3623 showspectrumpic_filter_select="fft"
3624 signature_filter_deps="gpl avcodec avformat"
3625 sinc_filter_select="rdft"
3626 smartblur_filter_deps="gpl swscale"
3627 sobel_opencl_filter_deps="opencl"
3628 sofalizer_filter_deps="libmysofa avcodec"
3629 sofalizer_filter_select="fft"
3630 spectrumsynth_filter_deps="avcodec"
3631 spectrumsynth_filter_select="fft"
3632 spp_filter_deps="gpl avcodec"
3633 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3634 sr_filter_deps="avformat swscale"
3635 sr_filter_select="dnn"
3636 stereo3d_filter_deps="gpl"
3637 subtitles_filter_deps="avformat avcodec libass"
3638 super2xsai_filter_deps="gpl"
3639 pixfmts_super2xsai_test_deps="super2xsai_filter"
3640 superequalizer_filter_select="rdft"
3641 surround_filter_select="rdft"
3642 tinterlace_filter_deps="gpl"
3643 tinterlace_merge_test_deps="tinterlace_filter"
3644 tinterlace_pad_test_deps="tinterlace_filter"
3645 tonemap_filter_deps="const_nan"
3646 tonemap_vaapi_filter_deps="vaapi VAProcFilterParameterBufferHDRToneMapping"
3647 tonemap_opencl_filter_deps="opencl const_nan"
3648 transpose_opencl_filter_deps="opencl"
3649 transpose_vaapi_filter_deps="vaapi VAProcPipelineCaps_rotation_flags"
3650 unsharp_opencl_filter_deps="opencl"
3651 uspp_filter_deps="gpl avcodec"
3652 vaguedenoiser_filter_deps="gpl"
3653 vidstabdetect_filter_deps="libvidstab"
3654 vidstabtransform_filter_deps="libvidstab"
3655 libvmaf_filter_deps="libvmaf pthreads"
3656 zmq_filter_deps="libzmq"
3657 zoompan_filter_deps="swscale"
3658 zscale_filter_deps="libzimg const_nan"
3659 scale_vaapi_filter_deps="vaapi"
3660 scale_vulkan_filter_deps="vulkan libglslang"
3661 vpp_qsv_filter_deps="libmfx"
3662 vpp_qsv_filter_select="qsvvpp"
3663 xfade_opencl_filter_deps="opencl"
3664 yadif_cuda_filter_deps="ffnvcodec"
3665 yadif_cuda_filter_deps_any="cuda_nvcc cuda_llvm"
3666
3667 # examples
3668 avio_list_dir_deps="avformat avutil"
3669 avio_reading_deps="avformat avcodec avutil"
3670 decode_audio_example_deps="avcodec avutil"
3671 decode_video_example_deps="avcodec avutil"
3672 demuxing_decoding_example_deps="avcodec avformat avutil"
3673 encode_audio_example_deps="avcodec avutil"
3674 encode_video_example_deps="avcodec avutil"
3675 extract_mvs_example_deps="avcodec avformat avutil"
3676 filter_audio_example_deps="avfilter avutil"
3677 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3678 filtering_video_example_deps="avfilter avcodec avformat avutil"
3679 http_multiclient_example_deps="avformat avutil fork"
3680 hw_decode_example_deps="avcodec avformat avutil"
3681 metadata_example_deps="avformat avutil"
3682 muxing_example_deps="avcodec avformat avutil swscale"
3683 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3684 remuxing_example_deps="avcodec avformat avutil"
3685 resampling_audio_example_deps="avutil swresample"
3686 scaling_video_example_deps="avutil swscale"
3687 transcode_aac_example_deps="avcodec avformat swresample"
3688 transcoding_example_deps="avfilter avcodec avformat avutil"
3689 vaapi_encode_example_deps="avcodec avutil h264_vaapi_encoder"
3690 vaapi_transcode_example_deps="avcodec avformat avutil h264_vaapi_encoder"
3691
3692 # EXTRALIBS_LIST
3693 cpu_init_extralibs="pthreads_extralibs"
3694 cws2fws_extralibs="zlib_extralibs"
3695
3696 # libraries, in any order
3697 avcodec_deps="avutil"
3698 avcodec_suggest="libm"
3699 avcodec_select="null_bsf"
3700 avdevice_deps="avformat avcodec avutil"
3701 avdevice_suggest="libm"
3702 avfilter_deps="avutil"
3703 avfilter_suggest="libm"
3704 avformat_deps="avcodec avutil"
3705 avformat_suggest="libm network zlib"
3706 avresample_deps="avutil"
3707 avresample_suggest="libm"
3708 avutil_suggest="clock_gettime ffnvcodec libm libdrm libmfx opencl user32 vaapi vulkan videotoolbox corefoundation corevideo coremedia bcrypt"
3709 postproc_deps="avutil gpl"
3710 postproc_suggest="libm"
3711 swresample_deps="avutil"
3712 swresample_suggest="libm libsoxr"
3713 swscale_deps="avutil"
3714 swscale_suggest="libm"
3715
3716 avcodec_extralibs="pthreads_extralibs iconv_extralibs dxva2_extralibs"
3717 avfilter_extralibs="pthreads_extralibs"
3718 avutil_extralibs="d3d11va_extralibs nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3719
3720 # programs
3721 ffmpeg_deps="avcodec avfilter avformat"
3722 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3723                hflip_filter null_filter
3724                transpose_filter trim_filter vflip_filter"
3725 ffmpeg_suggest="ole32 psapi shell32"
3726 ffplay_deps="avcodec avformat swscale swresample sdl2"
3727 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3728 ffplay_suggest="shell32"
3729 ffprobe_deps="avcodec avformat"
3730 ffprobe_suggest="shell32"
3731
3732 # documentation
3733 podpages_deps="perl"
3734 manpages_deps="perl pod2man"
3735 htmlpages_deps="perl"
3736 htmlpages_deps_any="makeinfo_html texi2html"
3737 txtpages_deps="perl makeinfo"
3738 doc_deps_any="manpages htmlpages podpages txtpages"
3739
3740 # default parameters
3741
3742 logfile="ffbuild/config.log"
3743
3744 # installation paths
3745 prefix_default="/usr/local"
3746 bindir_default='${prefix}/bin'
3747 datadir_default='${prefix}/share/ffmpeg'
3748 docdir_default='${prefix}/share/doc/ffmpeg'
3749 incdir_default='${prefix}/include'
3750 libdir_default='${prefix}/lib'
3751 mandir_default='${prefix}/share/man'
3752
3753 # toolchain
3754 ar_default="ar"
3755 cc_default="gcc"
3756 cxx_default="g++"
3757 host_cc_default="gcc"
3758 doxygen_default="doxygen"
3759 install="install"
3760 ln_s_default="ln -s -f"
3761 nm_default="nm -g"
3762 pkg_config_default=pkg-config
3763 ranlib_default="ranlib"
3764 strip_default="strip"
3765 version_script='--version-script'
3766 objformat="elf32"
3767 x86asmexe_default="nasm"
3768 windres_default="windres"
3769 striptype="direct"
3770
3771 # OS
3772 target_os_default=$(tolower $(uname -s))
3773 host_os=$target_os_default
3774
3775 # machine
3776 if test "$target_os_default" = aix; then
3777     arch_default=$(uname -p)
3778     strip_default="strip -X32_64"
3779     nm_default="nm -g -X32_64"
3780 else
3781     arch_default=$(uname -m)
3782 fi
3783 cpu="generic"
3784 intrinsics="none"
3785
3786 # configurable options
3787 enable $PROGRAM_LIST
3788 enable $DOCUMENT_LIST
3789 enable $EXAMPLE_LIST
3790 enable $(filter_out avresample $LIBRARY_LIST)
3791 enable stripping
3792
3793 enable asm
3794 enable debug
3795 enable doc
3796 enable faan faandct faanidct
3797 enable large_tests
3798 enable optimizations
3799 enable runtime_cpudetect
3800 enable safe_bitstream_reader
3801 enable static
3802 enable swscale_alpha
3803 enable valgrind_backtrace
3804
3805 sws_max_filter_size_default=256
3806 set_default sws_max_filter_size
3807
3808 # internal components are enabled by default
3809 enable $EXTRALIBS_LIST
3810
3811 # Avoid external, non-system, libraries getting enabled by dependency resolution
3812 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3813
3814 # build settings
3815 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3816 LIBPREF="lib"
3817 LIBSUF=".a"
3818 FULLNAME='$(NAME)$(BUILDSUF)'
3819 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3820 SLIBPREF="lib"
3821 SLIBSUF=".so"
3822 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3823 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3824 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3825 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3826 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3827 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3828 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3829
3830 asflags_filter=echo
3831 cflags_filter=echo
3832 ldflags_filter=echo
3833
3834 AS_C='-c'
3835 AS_O='-o $@'
3836 CC_C='-c'
3837 CC_E='-E -o $@'
3838 CC_O='-o $@'
3839 CXX_C='-c'
3840 CXX_O='-o $@'
3841 OBJCC_C='-c'
3842 OBJCC_E='-E -o $@'
3843 OBJCC_O='-o $@'
3844 X86ASM_O='-o $@'
3845 LD_O='-o $@'
3846 LD_LIB='-l%'
3847 LD_PATH='-L'
3848 HOSTCC_C='-c'
3849 HOSTCC_E='-E -o $@'
3850 HOSTCC_O='-o $@'
3851 HOSTLD_O='-o $@'
3852 NVCC_C='-c'
3853 NVCC_O='-o $@'
3854
3855 host_extralibs='-lm'
3856 host_cflags_filter=echo
3857 host_ldflags_filter=echo
3858
3859 target_path='$(CURDIR)'
3860
3861 # since the object filename is not given with the -MM flag, the compiler
3862 # is only able to print the basename, and we must add the path ourselves
3863 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3864 DEPFLAGS='-MM'
3865
3866 mkdir -p ffbuild
3867
3868 # find source path
3869 if test -f configure; then
3870     source_path=.
3871 elif test -f src/configure; then
3872     source_path=src
3873 else
3874     source_path=$(cd $(dirname "$0"); pwd)
3875     case "$source_path" in
3876         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3877     esac
3878     test -e "$source_path/config.h" &&
3879         die "Out of tree builds are impossible with config.h in source dir."
3880 fi
3881
3882 for v in "$@"; do
3883     r=${v#*=}
3884     l=${v%"$r"}
3885     r=$(sh_quote "$r")
3886     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3887 done
3888
3889 find_things_extern(){
3890     thing=$1
3891     pattern=$2
3892     file=$source_path/$3
3893     out=${4:-$thing}
3894     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$out/p" "$file"
3895 }
3896
3897 find_filters_extern(){
3898     file=$source_path/$1
3899     sed -n 's/^extern AVFilter ff_[avfsinkrc]\{2,5\}_\([[:alnum:]_]\{1,\}\);/\1_filter/p' $file
3900 }
3901
3902 FILTER_LIST=$(find_filters_extern libavfilter/allfilters.c)
3903 OUTDEV_LIST=$(find_things_extern muxer AVOutputFormat libavdevice/alldevices.c outdev)
3904 INDEV_LIST=$(find_things_extern demuxer AVInputFormat libavdevice/alldevices.c indev)
3905 MUXER_LIST=$(find_things_extern muxer AVOutputFormat libavformat/allformats.c)
3906 DEMUXER_LIST=$(find_things_extern demuxer AVInputFormat libavformat/allformats.c)
3907 ENCODER_LIST=$(find_things_extern encoder AVCodec libavcodec/allcodecs.c)
3908 DECODER_LIST=$(find_things_extern decoder AVCodec libavcodec/allcodecs.c)
3909 CODEC_LIST="
3910     $ENCODER_LIST
3911     $DECODER_LIST
3912 "
3913 PARSER_LIST=$(find_things_extern parser AVCodecParser libavcodec/parsers.c)
3914 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3915 HWACCEL_LIST=$(find_things_extern hwaccel AVHWAccel libavcodec/hwaccels.h)
3916 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3917
3918 AVCODEC_COMPONENTS_LIST="
3919     $BSF_LIST
3920     $DECODER_LIST
3921     $ENCODER_LIST
3922     $HWACCEL_LIST
3923     $PARSER_LIST
3924 "
3925
3926 AVDEVICE_COMPONENTS_LIST="
3927     $INDEV_LIST
3928     $OUTDEV_LIST
3929 "
3930
3931 AVFILTER_COMPONENTS_LIST="
3932     $FILTER_LIST
3933 "
3934
3935 AVFORMAT_COMPONENTS_LIST="
3936     $DEMUXER_LIST
3937     $MUXER_LIST
3938     $PROTOCOL_LIST
3939 "
3940
3941 ALL_COMPONENTS="
3942     $AVCODEC_COMPONENTS_LIST
3943     $AVDEVICE_COMPONENTS_LIST
3944     $AVFILTER_COMPONENTS_LIST
3945     $AVFORMAT_COMPONENTS_LIST
3946 "
3947
3948 for n in $COMPONENT_LIST; do
3949     v=$(toupper ${n%s})_LIST
3950     eval enable \$$v
3951     eval ${n}_if_any="\$$v"
3952 done
3953
3954 enable $ARCH_EXT_LIST
3955
3956 die_unknown(){
3957     echo "Unknown option \"$1\"."
3958     echo "See $0 --help for available options."
3959     exit 1
3960 }
3961
3962 print_in_columns() {
3963     tr ' ' '\n' | sort | tr '\r\n' '  ' | awk -v col_width=24 -v width="$ncols" '
3964     {
3965         num_cols = width > col_width ? int(width / col_width) : 1;
3966         num_rows = int((NF + num_cols-1) / num_cols);
3967         y = x = 1;
3968         for (y = 1; y <= num_rows; y++) {
3969             i = y;
3970             for (x = 1; x <= num_cols; x++) {
3971                 if (i <= NF) {
3972                   line = sprintf("%s%-" col_width "s", line, $i);
3973                 }
3974                 i = i + num_rows;
3975             }
3976             print line; line = "";
3977         }
3978     }' | sed 's/ *$//'
3979 }
3980
3981 show_list() {
3982     suffix=_$1
3983     shift
3984     echo $* | sed s/$suffix//g | print_in_columns
3985     exit 0
3986 }
3987
3988 rand_list(){
3989     IFS=', '
3990     set -- $*
3991     unset IFS
3992     for thing; do
3993         comp=${thing%:*}
3994         prob=${thing#$comp}
3995         prob=${prob#:}
3996         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3997         echo "prob ${prob:-0.5}"
3998         printf '%s\n' $comp
3999     done
4000 }
4001
4002 do_random(){
4003     action=$1
4004     shift
4005     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
4006     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
4007 }
4008
4009 for opt do
4010     optval="${opt#*=}"
4011     case "$opt" in
4012         --extra-ldflags=*)
4013             add_ldflags $optval
4014         ;;
4015         --extra-ldexeflags=*)
4016             add_ldexeflags $optval
4017         ;;
4018         --extra-ldsoflags=*)
4019             add_ldsoflags $optval
4020         ;;
4021         --extra-ldlibflags=*)
4022             warn "The --extra-ldlibflags option is only provided for compatibility and will be\n"\
4023                  "removed in the future. Use --extra-ldsoflags instead."
4024             add_ldsoflags $optval
4025         ;;
4026         --extra-libs=*)
4027             add_extralibs $optval
4028         ;;
4029         --disable-devices)
4030             disable $INDEV_LIST $OUTDEV_LIST
4031         ;;
4032         --enable-debug=*)
4033             debuglevel="$optval"
4034         ;;
4035         --disable-programs)
4036             disable $PROGRAM_LIST
4037         ;;
4038         --disable-everything)
4039             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
4040         ;;
4041         --disable-all)
4042             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
4043             disable $LIBRARY_LIST $PROGRAM_LIST doc
4044             enable avutil
4045         ;;
4046         --enable-random|--disable-random)
4047             action=${opt%%-random}
4048             do_random ${action#--} $COMPONENT_LIST
4049         ;;
4050         --enable-random=*|--disable-random=*)
4051             action=${opt%%-random=*}
4052             do_random ${action#--} $optval
4053         ;;
4054         --enable-sdl)
4055             enable sdl2
4056         ;;
4057         --enable-*=*|--disable-*=*)
4058             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
4059             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
4060             eval list=\$$(toupper $thing)_LIST
4061             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
4062             list=$(filter "$name" $list)
4063             [ "$list" = "" ] && warn "Option $opt did not match anything"
4064             test $action = enable && warn_if_gets_disabled $list
4065             $action $list
4066         ;;
4067         --enable-yasm|--disable-yasm)
4068             warn "The ${opt} option is only provided for compatibility and will be\n"\
4069                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
4070             test $opt = --enable-yasm && x86asm=yes || x86asm=no
4071         ;;
4072         --yasmexe=*)
4073             warn "The --yasmexe option is only provided for compatibility and will be\n"\
4074                  "removed in the future. Use --x86asmexe instead."
4075             x86asmexe="$optval"
4076         ;;
4077         --enable-?*|--disable-?*)
4078             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
4079             if is_in $option $COMPONENT_LIST; then
4080                 test $action = disable && action=unset
4081                 eval $action \$$(toupper ${option%s})_LIST
4082             elif is_in $option $CMDLINE_SELECT; then
4083                 $action $option
4084             else
4085                 die_unknown $opt
4086             fi
4087         ;;
4088         --list-*)
4089             NAME="${opt#--list-}"
4090             is_in $NAME $COMPONENT_LIST || die_unknown $opt
4091             NAME=${NAME%s}
4092             eval show_list $NAME \$$(toupper $NAME)_LIST
4093         ;;
4094         --help|-h) show_help
4095         ;;
4096         --quiet|-q) quiet=yes
4097         ;;
4098         --fatal-warnings) enable fatal_warnings
4099         ;;
4100         --libfuzzer=*)
4101             libfuzzer_path="$optval"
4102         ;;
4103         *)
4104             optname="${opt%%=*}"
4105             optname="${optname#--}"
4106             optname=$(echo "$optname" | sed 's/-/_/g')
4107             if is_in $optname $CMDLINE_SET; then
4108                 eval $optname='$optval'
4109             elif is_in $optname $CMDLINE_APPEND; then
4110                 append $optname "$optval"
4111             else
4112                 die_unknown $opt
4113             fi
4114         ;;
4115     esac
4116 done
4117
4118 for e in $env; do
4119     eval "export $e"
4120 done
4121
4122 if disabled autodetect; then
4123
4124     # Unless iconv is explicitely disabled by the user, we still want to probe
4125     # for the iconv from the libc.
4126     disabled iconv || enable libc_iconv
4127
4128     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
4129     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
4130 fi
4131 # Mark specifically enabled, but normally autodetected libraries as requested.
4132 for lib in $AUTODETECT_LIBS; do
4133     enabled $lib && request $lib
4134 done
4135 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
4136 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
4137 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
4138
4139 disabled logging && logfile=/dev/null
4140
4141 # command line configuration sanity checks
4142
4143 # we need to build at least one lib type
4144 if ! enabled_any static shared; then
4145     cat <<EOF
4146 At least one library type must be built.
4147 Specify --enable-static to build the static libraries or --enable-shared to
4148 build the shared libraries as well. To only build the shared libraries specify
4149 --disable-static in addition to --enable-shared.
4150 EOF
4151     exit 1
4152 fi
4153
4154 die_license_disabled() {
4155     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
4156 }
4157
4158 die_license_disabled_gpl() {
4159     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
4160 }
4161
4162 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
4163 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
4164
4165 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
4166 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
4167
4168 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4169
4170 if enabled nonfree; then
4171     license="nonfree and unredistributable"
4172 elif enabled gplv3; then
4173     license="GPL version 3 or later"
4174 elif enabled lgplv3; then
4175     license="LGPL version 3 or later"
4176 elif enabled gpl; then
4177     license="GPL version 2 or later"
4178 else
4179     license="LGPL version 2.1 or later"
4180 fi
4181
4182 enabled_all gnutls openssl &&
4183     die "GnuTLS and OpenSSL must not be enabled at the same time."
4184
4185 enabled_all gnutls mbedtls &&
4186     die "GnuTLS and mbedTLS must not be enabled at the same time."
4187
4188 enabled_all openssl mbedtls &&
4189     die "OpenSSL and mbedTLS must not be enabled at the same time."
4190
4191 # Disable all the library-specific components if the library itself
4192 # is disabled, see AVCODEC_LIST and following _LIST variables.
4193
4194 disable_components(){
4195     disabled ${1} && disable $(
4196         eval components="\$$(toupper ${1})_COMPONENTS"
4197         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
4198     )
4199 }
4200
4201 map 'disable_components $v' $LIBRARY_LIST
4202
4203 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
4204 set >> $logfile
4205
4206 test -n "$valgrind" && toolchain="valgrind-memcheck"
4207
4208 enabled ossfuzz && ! echo $CFLAGS | grep -q -- "-fsanitize="  && ! echo $CFLAGS | grep -q -- "-fcoverage-mapping" &&{
4209     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
4210     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
4211 }
4212
4213 case "$toolchain" in
4214     *-asan)
4215         cc_default="${toolchain%-asan}"
4216         add_cflags  -fsanitize=address
4217         add_ldflags -fsanitize=address
4218     ;;
4219     *-msan)
4220         cc_default="${toolchain%-msan}"
4221         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
4222         add_ldflags -fsanitize=memory
4223     ;;
4224     *-tsan)
4225         cc_default="${toolchain%-tsan}"
4226         add_cflags  -fsanitize=thread
4227         add_ldflags -fsanitize=thread
4228         case "$toolchain" in
4229             gcc-tsan)
4230                 add_cflags  -fPIC
4231                 add_ldflags -fPIC
4232                 ;;
4233         esac
4234     ;;
4235     *-usan)
4236         cc_default="${toolchain%-usan}"
4237         add_cflags  -fsanitize=undefined
4238         add_ldflags -fsanitize=undefined
4239     ;;
4240     valgrind-*)
4241         target_exec_default="valgrind"
4242         case "$toolchain" in
4243             valgrind-massif)
4244                 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"
4245                 ;;
4246             valgrind-memcheck)
4247                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
4248                 ;;
4249         esac
4250     ;;
4251     msvc)
4252         # Check whether the current MSVC version needs the C99 converter.
4253         # From MSVC 2013 (compiler major version 18) onwards, it does actually
4254         # support enough of C99 to build ffmpeg. Default to the new
4255         # behaviour if the regexp was unable to match anything, since this
4256         # successfully parses the version number of existing supported
4257         # versions that require the converter (MSVC 2010 and 2012).
4258         cl_major_ver=$(cl.exe 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
4259         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
4260             cc_default="cl.exe"
4261             cxx_default="cl.exe"
4262         else
4263             die "Unsupported MSVC version (2013 or newer required)"
4264         fi
4265         ld_default="$source_path/compat/windows/mslink"
4266         nm_default="dumpbin.exe -symbols"
4267         ar_default="lib.exe"
4268         case "$arch" in
4269         aarch64|arm64)
4270             as_default="armasm64.exe"
4271             ;;
4272         arm*)
4273             as_default="armasm.exe"
4274             ;;
4275         esac
4276         target_os_default="win32"
4277         # Use a relative path for TMPDIR. This makes sure all the
4278         # ffconf temp files are written with a relative path, avoiding
4279         # issues with msys/win32 path conversion for MSVC parameters
4280         # such as -Fo<file> or -out:<file>.
4281         TMPDIR=.
4282     ;;
4283     icl)
4284         cc_default="icl"
4285         ld_default="xilink"
4286         nm_default="dumpbin -symbols"
4287         ar_default="xilib"
4288         target_os_default="win32"
4289         TMPDIR=.
4290     ;;
4291     gcov)
4292         add_cflags  -fprofile-arcs -ftest-coverage
4293         add_ldflags -fprofile-arcs -ftest-coverage
4294     ;;
4295     llvm-cov)
4296         add_cflags -fprofile-arcs -ftest-coverage
4297         add_ldflags --coverage
4298     ;;
4299     hardened)
4300         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
4301         add_cflags   -fno-strict-overflow -fstack-protector-all
4302         add_ldflags  -Wl,-z,relro -Wl,-z,now
4303         add_cflags   -fPIE
4304         add_ldexeflags -fPIE -pie
4305     ;;
4306     ?*)
4307         die "Unknown toolchain $toolchain"
4308     ;;
4309 esac
4310
4311 if test -n "$cross_prefix"; then
4312     test -n "$arch" && test -n "$target_os" ||
4313         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
4314     enable cross_compile
4315 fi
4316
4317 set_default target_os
4318 if test "$target_os" = android; then
4319     cc_default="clang"
4320 fi
4321
4322 ar_default="${cross_prefix}${ar_default}"
4323 cc_default="${cross_prefix}${cc_default}"
4324 cxx_default="${cross_prefix}${cxx_default}"
4325 nm_default="${cross_prefix}${nm_default}"
4326 pkg_config_default="${cross_prefix}${pkg_config_default}"
4327 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
4328     ranlib_default="${cross_prefix}${ranlib_default} -D"
4329 else
4330     ranlib_default="${cross_prefix}${ranlib_default}"
4331 fi
4332 strip_default="${cross_prefix}${strip_default}"
4333 windres_default="${cross_prefix}${windres_default}"
4334
4335 sysinclude_default="${sysroot}/usr/include"
4336
4337 if enabled cuda_sdk; then
4338     warn "Option --enable-cuda-sdk is deprecated. Use --enable-cuda-nvcc instead."
4339     enable cuda_nvcc
4340 fi
4341
4342 if enabled cuda_nvcc; then
4343     nvcc_default="nvcc"
4344     nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
4345 else
4346     nvcc_default="clang"
4347     nvccflags_default="--cuda-gpu-arch=sm_30 -O2"
4348     NVCC_C=""
4349 fi
4350
4351 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
4352     target_exec x86asmexe nvcc
4353 enabled cross_compile || host_cc_default=$cc
4354 set_default host_cc
4355
4356 pkg_config_fail_message=""
4357 if ! $pkg_config --version >/dev/null 2>&1; then
4358     warn "$pkg_config not found, library detection may fail."
4359     pkg_config=false
4360 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
4361     pkg_config_fail_message="
4362 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
4363 fi
4364
4365 if test $doxygen != $doxygen_default && \
4366   ! $doxygen --version >/dev/null 2>&1; then
4367     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
4368 fi
4369
4370 exesuf() {
4371     case $1 in
4372         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
4373     esac
4374 }
4375
4376 EXESUF=$(exesuf $target_os)
4377 HOSTEXESUF=$(exesuf $host_os)
4378
4379 # set temporary file name
4380 : ${TMPDIR:=$TEMPDIR}
4381 : ${TMPDIR:=$TMP}
4382 : ${TMPDIR:=/tmp}
4383
4384 if [ -n "$tempprefix" ] ; then
4385     mktemp(){
4386         tmpname="$tempprefix.${HOSTNAME}.${UID}"
4387         echo "$tmpname"
4388         mkdir "$tmpname"
4389     }
4390 elif ! test_cmd mktemp -u XXXXXX; then
4391     # simple replacement for missing mktemp
4392     # NOT SAFE FOR GENERAL USE
4393     mktemp(){
4394         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
4395         echo "$tmpname"
4396         mkdir "$tmpname"
4397     }
4398 fi
4399
4400 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
4401     die "Unable to create temporary directory in $TMPDIR."
4402
4403 tmpfile(){
4404     tmp="${FFTMPDIR}/test"$2
4405     (set -C; exec > $tmp) 2> /dev/null ||
4406         die "Unable to create temporary file in $FFTMPDIR."
4407     eval $1=$tmp
4408 }
4409
4410 trap 'rm -rf -- "$FFTMPDIR"' EXIT
4411 trap 'exit 2' INT
4412
4413 tmpfile TMPASM .asm
4414 tmpfile TMPC   .c
4415 tmpfile TMPCPP .cpp
4416 tmpfile TMPE   $EXESUF
4417 tmpfile TMPH   .h
4418 tmpfile TMPM   .m
4419 tmpfile TMPCU  .cu
4420 tmpfile TMPO   .o
4421 tmpfile TMPS   .S
4422 tmpfile TMPSH  .sh
4423 tmpfile TMPV   .ver
4424
4425 unset -f mktemp
4426
4427 chmod +x $TMPE
4428
4429 # make sure we can execute files in $TMPDIR
4430 cat > $TMPSH 2>> $logfile <<EOF
4431 #! /bin/sh
4432 EOF
4433 chmod +x $TMPSH >> $logfile 2>&1
4434 if ! $TMPSH >> $logfile 2>&1; then
4435     cat <<EOF
4436 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
4437 variable to another directory and make sure that it is not mounted noexec.
4438 EOF
4439     die "Sanity test failed."
4440 fi
4441
4442 armasm_flags(){
4443     for flag; do
4444         case $flag in
4445             # Filter out MSVC cl.exe options from cflags that shouldn't
4446             # be passed to gas-preprocessor
4447             -M[TD]*)                                            ;;
4448             *)                  echo $flag                      ;;
4449         esac
4450    done
4451 }
4452
4453 cparser_flags(){
4454     for flag; do
4455         case $flag in
4456             -Wno-switch)             echo -Wno-switch-enum ;;
4457             -Wno-format-zero-length) ;;
4458             -Wdisabled-optimization) ;;
4459             -Wno-pointer-sign)       echo -Wno-other ;;
4460             *)                       echo $flag ;;
4461         esac
4462     done
4463 }
4464
4465 msvc_common_flags(){
4466     for flag; do
4467         case $flag in
4468             # In addition to specifying certain flags under the compiler
4469             # specific filters, they must be specified here as well or else the
4470             # generic catch all at the bottom will print the original flag.
4471             -Wall)                ;;
4472             -Wextra)              ;;
4473             -std=c*)              ;;
4474             # Common flags
4475             -fomit-frame-pointer) ;;
4476             -g)                   echo -Z7 ;;
4477             -fno-math-errno)      ;;
4478             -fno-common)          ;;
4479             -fno-signed-zeros)    ;;
4480             -fPIC)                ;;
4481             -mthumb)              ;;
4482             -march=*)             ;;
4483             -lz)                  echo zlib.lib ;;
4484             -lx264)               echo libx264.lib ;;
4485             -lstdc++)             ;;
4486             -l*)                  echo ${flag#-l}.lib ;;
4487             -LARGEADDRESSAWARE)   echo $flag ;;
4488             -L*)                  echo -libpath:${flag#-L} ;;
4489             -Wl,*)                ;;
4490             *)                    echo $flag ;;
4491         esac
4492     done
4493 }
4494
4495 msvc_flags(){
4496     msvc_common_flags "$@"
4497     for flag; do
4498         case $flag in
4499             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4500                                        -wd4554 ;;
4501             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4502                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4503                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4504                                        -wd4307 \
4505                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4506         esac
4507     done
4508 }
4509
4510 icl_flags(){
4511     msvc_common_flags "$@"
4512     for flag; do
4513         case $flag in
4514             # Despite what Intel's documentation says -Wall, which is supported
4515             # on Windows, does enable remarks so disable them here.
4516             -Wall)                echo $flag -Qdiag-disable:remark ;;
4517             -std=c99)             echo -Qstd=c99 ;;
4518             -flto)                echo -ipo ;;
4519         esac
4520     done
4521 }
4522
4523 icc_flags(){
4524     for flag; do
4525         case $flag in
4526             -flto)                echo -ipo ;;
4527             *)                    echo $flag ;;
4528         esac
4529     done
4530 }
4531
4532 suncc_flags(){
4533     for flag; do
4534         case $flag in
4535             -march=*|-mcpu=*)
4536                 case "${flag#*=}" in
4537                     native)                   echo -xtarget=native       ;;
4538                     v9|niagara)               echo -xarch=sparc          ;;
4539                     ultrasparc)               echo -xarch=sparcvis       ;;
4540                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4541                     i586|pentium)             echo -xchip=pentium        ;;
4542                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4543                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4544                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4545                     pentium4*)          echo -xtarget=pentium4           ;;
4546                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4547                     *-sse3)             echo -xarch=sse3                 ;;
4548                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4549                     bonnell)                   echo -xarch=ssse3         ;;
4550                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4551                     westmere)                  echo -xtarget=westmere    ;;
4552                     silvermont)                echo -xarch=sse4_2        ;;
4553                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4554                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4555                                                echo -xarch=avx           ;;
4556                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4557                     btver1)                    echo -xarch=amdsse4a      ;;
4558                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4559                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4560                     k8|opteron|athlon64|athlon-fx)
4561                                                echo -xarch=sse2a         ;;
4562                     athlon*)                   echo -xarch=pentium_proa  ;;
4563                 esac
4564                 ;;
4565             -std=c99)             echo -xc99              ;;
4566             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4567             -fPIC)                echo -KPIC -xcode=pic32 ;;
4568             -W*,*)                echo $flag              ;;
4569             -f*-*|-W*|-mimpure-text)                      ;;
4570             -shared)              echo -G                 ;;
4571             *)                    echo $flag              ;;
4572         esac
4573     done
4574 }
4575
4576 probe_cc(){
4577     pfx=$1
4578     _cc=$2
4579     first=$3
4580
4581     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4582     unset _ld_o _ldflags _ld_lib _ld_path
4583     unset _depflags _DEPCMD _DEPFLAGS
4584     _flags_filter=echo
4585
4586     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4587         true # no-op to avoid reading stdin in following checks
4588     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4589         _type=llvm_gcc
4590         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4591         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4592         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4593         _cflags_speed='-O3'
4594         _cflags_size='-Os'
4595     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4596         _type=gcc
4597         gcc_version=$($_cc --version | head -n1)
4598         gcc_basever=$($_cc -dumpversion)
4599         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4600         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4601         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4602         case $gcc_basever in
4603             2) ;;
4604             2.*) ;;
4605             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4606         esac
4607         if [ "$first" = true ]; then
4608             case $gcc_basever in
4609                 4.2*)
4610                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4611             esac
4612         fi
4613         _cflags_speed='-O3'
4614         _cflags_size='-Os'
4615     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4616         _type=icc
4617         _ident=$($_cc --version | head -n1)
4618         _depflags='-MMD'
4619         _cflags_speed='-O3'
4620         _cflags_size='-Os'
4621         _cflags_noopt='-O1'
4622         _flags_filter=icc_flags
4623     elif $_cc -v 2>&1 | grep -q xlc; then
4624         _type=xlc
4625         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4626         _cflags_speed='-O5'
4627         _cflags_size='-O5 -qcompact'
4628     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4629         test -d "$sysroot" || die "No valid sysroot specified."
4630         _type=armcc
4631         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4632         armcc_conf="$PWD/armcc.conf"
4633         $_cc --arm_linux_configure                 \
4634              --arm_linux_config_file="$armcc_conf" \
4635              --configure_sysroot="$sysroot"        \
4636              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4637              die "Error creating armcc configuration file."
4638         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4639         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4640         as_default="${cross_prefix}gcc"
4641         _depflags='-MMD'
4642         _cflags_speed='-O3'
4643         _cflags_size='-Os'
4644     elif $_cc -v 2>&1 | grep -q clang && ! $_cc -? > /dev/null 2>&1; then
4645         _type=clang
4646         _ident=$($_cc --version 2>/dev/null | head -n1)
4647         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4648         _cflags_speed='-O3'
4649         _cflags_size='-Oz'
4650     elif $_cc -V 2>&1 | grep -q Sun; then
4651         _type=suncc
4652         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4653         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4654         _DEPFLAGS='-xM1 -xc99'
4655         _ldflags='-std=c99'
4656         _cflags_speed='-O5'
4657         _cflags_size='-O5 -xspace'
4658         _flags_filter=suncc_flags
4659     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4660         _type=pathscale
4661         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4662         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4663         _cflags_speed='-O2'
4664         _cflags_size='-Os'
4665         _flags_filter='filter_out -Wdisabled-optimization'
4666     elif $_cc -v 2>&1 | grep -q Open64; then
4667         _type=open64
4668         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4669         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4670         _cflags_speed='-O2'
4671         _cflags_size='-Os'
4672         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4673     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4674         _type=armasm
4675         _ident=$($_cc | head -n1)
4676         # 4509: "This form of conditional instruction is deprecated"
4677         _flags="-nologo -ignore 4509"
4678         _flags_filter=armasm_flags
4679     elif $_cc 2>&1 | grep -q Intel; then
4680         _type=icl
4681         _ident=$($_cc 2>&1 | head -n1)
4682         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4683         # Not only is O3 broken on 13.x+ but it is slower on all previous
4684         # versions (tested) as well.
4685         _cflags_speed="-O2"
4686         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4687         if $_cc 2>&1 | grep -q Linker; then
4688             _ld_o='-out:$@'
4689         else
4690             _ld_o='-Fe$@'
4691         fi
4692         _cc_o='-Fo$@'
4693         _cc_e='-P'
4694         _flags_filter=icl_flags
4695         _ld_lib='lib%.a'
4696         _ld_path='-libpath:'
4697         # -Qdiag-error to make icl error when seeing certain unknown arguments
4698         _flags='-nologo -Qdiag-error:4044,10157'
4699         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4700         # with MSVC which enables it by default.
4701         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4702         disable stripping
4703     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4704         # lld can emulate multiple different linkers; in ms link.exe mode,
4705         # the -? parameter gives the help output which contains an identifyable
4706         # string, while it gives an error in other modes.
4707         _type=lld-link
4708         # The link.exe mode doesn't have a switch for getting the version,
4709         # but we can force it back to gnu mode and get the version from there.
4710         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4711         _ld_o='-out:$@'
4712         _flags_filter=msvc_flags
4713         _ld_lib='lib%.a'
4714         _ld_path='-libpath:'
4715     elif $_cc -nologo- 2>&1 | grep -q Microsoft || { $_cc -v 2>&1 | grep -q clang && $_cc -? > /dev/null 2>&1; }; then
4716         _type=msvc
4717         if $_cc -nologo- 2>&1 | grep -q Microsoft; then
4718             _ident=$($_cc 2>&1 | head -n1 | tr -d '\r')
4719         else
4720             _ident=$($_cc --version 2>/dev/null | head -n1 | tr -d '\r')
4721         fi
4722         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4723         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4724         _cflags_speed="-O2"
4725         _cflags_size="-O1"
4726         _cflags_noopt="-O1"
4727         if $_cc -nologo- 2>&1 | grep -q Linker; then
4728             _ld_o='-out:$@'
4729         else
4730             _ld_o='-Fe$@'
4731         fi
4732         _cc_o='-Fo$@'
4733         _cc_e='-P -Fi$@'
4734         _flags_filter=msvc_flags
4735         _ld_lib='lib%.a'
4736         _ld_path='-libpath:'
4737         _flags='-nologo'
4738         disable stripping
4739     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4740         _type=cparser
4741         _ident=$($_cc --version | head -n1)
4742         _depflags='-MMD'
4743         _cflags_speed='-O4'
4744         _cflags_size='-O2'
4745         _flags_filter=cparser_flags
4746     fi
4747
4748     eval ${pfx}_type=\$_type
4749     eval ${pfx}_ident=\$_ident
4750 }
4751
4752 set_ccvars(){
4753     eval ${1}_C=\${_cc_c-\${${1}_C}}
4754     eval ${1}_E=\${_cc_e-\${${1}_E}}
4755     eval ${1}_O=\${_cc_o-\${${1}_O}}
4756
4757     if [ -n "$_depflags" ]; then
4758         eval ${1}_DEPFLAGS=\$_depflags
4759     else
4760         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4761         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4762         eval DEP${1}FLAGS=\$_flags
4763     fi
4764 }
4765
4766 probe_cc cc "$cc" "true"
4767 cflags_filter=$_flags_filter
4768 cflags_speed=$_cflags_speed
4769 cflags_size=$_cflags_size
4770 cflags_noopt=$_cflags_noopt
4771 add_cflags $_flags $_cflags
4772 cc_ldflags=$_ldflags
4773 set_ccvars CC
4774 set_ccvars CXX
4775
4776 probe_cc hostcc "$host_cc"
4777 host_cflags_filter=$_flags_filter
4778 host_cflags_speed=$_cflags_speed
4779 add_host_cflags  $_flags $_cflags
4780 set_ccvars HOSTCC
4781
4782 test -n "$cc_type" && enable $cc_type ||
4783     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4784
4785 : ${as_default:=$cc}
4786 : ${objcc_default:=$cc}
4787 : ${dep_cc_default:=$cc}
4788 : ${ld_default:=$cc}
4789 : ${host_ld_default:=$host_cc}
4790 set_default ar as objcc dep_cc ld ln_s host_ld windres
4791
4792 probe_cc as "$as"
4793 asflags_filter=$_flags_filter
4794 add_asflags $_flags $_cflags
4795 set_ccvars AS
4796
4797 probe_cc objcc "$objcc"
4798 objcflags_filter=$_flags_filter
4799 add_objcflags $_flags $_cflags
4800 set_ccvars OBJC
4801
4802 probe_cc ld "$ld"
4803 ldflags_filter=$_flags_filter
4804 add_ldflags $_flags $_ldflags
4805 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4806 LD_O=${_ld_o-$LD_O}
4807 LD_LIB=${_ld_lib-$LD_LIB}
4808 LD_PATH=${_ld_path-$LD_PATH}
4809
4810 probe_cc hostld "$host_ld"
4811 host_ldflags_filter=$_flags_filter
4812 add_host_ldflags $_flags $_ldflags
4813 HOSTLD_O=${_ld_o-$HOSTLD_O}
4814
4815 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4816     probe_cc depcc "$dep_cc"
4817     CCDEP=${_DEPCMD:-$DEPCMD}
4818     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4819     DEPCCFLAGS=$_flags
4820 fi
4821
4822 if $ar 2>&1 | grep -q Microsoft; then
4823     arflags="-nologo"
4824     ar_o='-out:$@'
4825 elif $ar 2>&1 | grep -q "\[D\] "; then
4826     arflags="rcD"
4827     ar_o='$@'
4828 else
4829     arflags="rc"
4830     ar_o='$@'
4831 fi
4832
4833 add_cflags $extra_cflags
4834 add_cxxflags $extra_cxxflags
4835 add_objcflags $extra_objcflags
4836 add_asflags $extra_cflags
4837
4838 if test -n "$sysroot"; then
4839     case "$cc_type" in
4840         gcc|llvm_gcc|clang)
4841             add_cppflags --sysroot="$sysroot"
4842             add_ldflags --sysroot="$sysroot"
4843         ;;
4844     esac
4845 fi
4846
4847 if test "$cpu" = host; then
4848     enabled cross_compile &&
4849         warn "--cpu=host makes no sense when cross-compiling."
4850
4851     case "$cc_type" in
4852         gcc|llvm_gcc)
4853             check_native(){
4854                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4855                 sed -n "/cc1.*$1=/{
4856                             s/.*$1=\\([^ ]*\\).*/\\1/
4857                             p
4858                             q
4859                         }" $TMPE
4860             }
4861             cpu=$(check_native -march || check_native -mcpu)
4862         ;;
4863         clang)
4864             check_native(){
4865                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4866                 sed -n "/cc1.*-target-cpu /{
4867                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4868                             p
4869                             q
4870                         }" $TMPE
4871             }
4872             cpu=$(check_native -march)
4873         ;;
4874     esac
4875
4876     test "${cpu:-host}" = host &&
4877         die "--cpu=host not supported with compiler $cc"
4878 fi
4879
4880 # Deal with common $arch aliases
4881 case "$arch" in
4882     aarch64|arm64)
4883         arch="aarch64"
4884     ;;
4885     arm*|iPad*|iPhone*)
4886         arch="arm"
4887     ;;
4888     mips*|IP*)
4889         case "$arch" in
4890         *el)
4891             add_cppflags -EL
4892             add_ldflags -EL
4893         ;;
4894         *eb)
4895             add_cppflags -EB
4896             add_ldflags -EB
4897         ;;
4898         esac
4899         arch="mips"
4900     ;;
4901     parisc*|hppa*)
4902         arch="parisc"
4903     ;;
4904     "Power Macintosh"|ppc*|powerpc*)
4905         arch="ppc"
4906     ;;
4907     s390|s390x)
4908         arch="s390"
4909     ;;
4910     sh4|sh)
4911         arch="sh4"
4912     ;;
4913     sun4*|sparc*)
4914         arch="sparc"
4915     ;;
4916     tilegx|tile-gx)
4917         arch="tilegx"
4918     ;;
4919     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4920         arch="x86"
4921     ;;
4922 esac
4923
4924 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4925 enable $arch
4926
4927 # Add processor-specific flags
4928 if enabled aarch64; then
4929
4930     case $cpu in
4931         armv*)
4932             cpuflags="-march=$cpu"
4933         ;;
4934         *)
4935             cpuflags="-mcpu=$cpu"
4936         ;;
4937     esac
4938
4939 elif enabled alpha; then
4940
4941     cpuflags="-mcpu=$cpu"
4942
4943 elif enabled arm; then
4944
4945     check_arm_arch() {
4946         test_cpp_condition stddef.h \
4947             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4948             $cpuflags
4949     }
4950
4951     probe_arm_arch() {
4952         if   check_arm_arch 4;        then echo armv4
4953         elif check_arm_arch 4T;       then echo armv4t
4954         elif check_arm_arch 5;        then echo armv5
4955         elif check_arm_arch 5E;       then echo armv5e
4956         elif check_arm_arch 5T;       then echo armv5t
4957         elif check_arm_arch 5TE;      then echo armv5te
4958         elif check_arm_arch 5TEJ;     then echo armv5te
4959         elif check_arm_arch 6;        then echo armv6
4960         elif check_arm_arch 6J;       then echo armv6j
4961         elif check_arm_arch 6K;       then echo armv6k
4962         elif check_arm_arch 6Z;       then echo armv6z
4963         elif check_arm_arch 6KZ;      then echo armv6zk
4964         elif check_arm_arch 6ZK;      then echo armv6zk
4965         elif check_arm_arch 6T2;      then echo armv6t2
4966         elif check_arm_arch 7;        then echo armv7
4967         elif check_arm_arch 7A  7_A;  then echo armv7-a
4968         elif check_arm_arch 7S;       then echo armv7-a
4969         elif check_arm_arch 7R  7_R;  then echo armv7-r
4970         elif check_arm_arch 7M  7_M;  then echo armv7-m
4971         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4972         elif check_arm_arch 8A  8_A;  then echo armv8-a
4973         fi
4974     }
4975
4976     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4977
4978     case $cpu in
4979         armv*)
4980             cpuflags="-march=$cpu"
4981             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4982         ;;
4983         *)
4984             cpuflags="-mcpu=$cpu"
4985             case $cpu in
4986                 cortex-a*)                               subarch=armv7a  ;;
4987                 cortex-r*)                               subarch=armv7r  ;;
4988                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4989                 arm11*)                                  subarch=armv6   ;;
4990                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4991                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4992                 *)                             subarch=$(probe_arm_arch) ;;
4993             esac
4994         ;;
4995     esac
4996
4997     case "$subarch" in
4998         armv5t*)    enable fast_clz                ;;
4999         armv[6-8]*)
5000             enable fast_clz
5001             disabled fast_unaligned || enable fast_unaligned
5002             ;;
5003     esac
5004
5005 elif enabled avr32; then
5006
5007     case $cpu in
5008         ap7[02]0[0-2])
5009             subarch="avr32_ap"
5010             cpuflags="-mpart=$cpu"
5011         ;;
5012         ap)
5013             subarch="avr32_ap"
5014             cpuflags="-march=$cpu"
5015         ;;
5016         uc3[ab]*)
5017             subarch="avr32_uc"
5018             cpuflags="-mcpu=$cpu"
5019         ;;
5020         uc)
5021             subarch="avr32_uc"
5022             cpuflags="-march=$cpu"
5023         ;;
5024     esac
5025
5026 elif enabled bfin; then
5027
5028     cpuflags="-mcpu=$cpu"
5029
5030 elif enabled mips; then
5031
5032     if [ "$cpu" != "generic" ]; then
5033         disable mips32r2
5034         disable mips32r5
5035         disable mips64r2
5036         disable mips32r6
5037         disable mips64r6
5038         disable loongson2
5039         disable loongson3
5040         disable mipsdsp
5041         disable mipsdspr2
5042
5043         cpuflags="-march=$cpu"
5044
5045         case $cpu in
5046             # General ISA levels
5047             mips1|mips3)
5048             ;;
5049             mips32r2)
5050                 enable mips32r2
5051             ;;
5052             mips32r5)
5053                 enable mips32r2
5054                 enable mips32r5
5055             ;;
5056             mips64r2|mips64r5)
5057                 enable mips64r2
5058                 enable loongson3
5059             ;;
5060             # Cores from MIPS(MTI)
5061             24kc)
5062                 disable mipsfpu
5063                 enable mips32r2
5064             ;;
5065             24kf*|24kec|34kc|74Kc|1004kc)
5066                 enable mips32r2
5067             ;;
5068             24kef*|34kf*|1004kf*)
5069                 enable mipsdsp
5070                 enable mips32r2
5071             ;;
5072             p5600)
5073                 enable mips32r2
5074                 enable mips32r5
5075                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
5076             ;;
5077             i6400)
5078                 enable mips64r6
5079                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
5080             ;;
5081             p6600)
5082                 enable mips64r6
5083                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
5084             ;;
5085             # Cores from Loongson
5086             loongson2e|loongson2f|loongson3*)
5087                 enable local_aligned
5088                 enable simd_align_16
5089                 enable fast_64bit
5090                 enable fast_clz
5091                 enable fast_cmov
5092                 enable fast_unaligned
5093                 disable aligned_stack
5094                 # When gcc version less than 5.3.0, add -fno-expensive-optimizations flag.
5095                 if test "$cc_type" = "gcc"; then
5096                     case $gcc_basever in
5097                         2|2.*|3.*|4.*|5.0|5.1|5.2)
5098                         expensive_optimization_flag="-fno-expensive-optimizations"
5099                         ;;
5100                         *)
5101                         expensive_optimization_flag=""
5102                         ;;
5103                     esac
5104                 fi
5105
5106                 case $cpu in
5107                     loongson3*)
5108                         enable loongson3
5109                         cpuflags="-march=loongson3a -mhard-float $expensive_optimization_flag"
5110                     ;;
5111                     loongson2e)
5112                         enable loongson2
5113                         cpuflags="-march=loongson2e -mhard-float $expensive_optimization_flag"
5114                     ;;
5115                     loongson2f)
5116                         enable loongson2
5117                         cpuflags="-march=loongson2f -mhard-float $expensive_optimization_flag"
5118                     ;;
5119                 esac
5120             ;;
5121             *)
5122                 warn "unknown MIPS CPU"
5123             ;;
5124         esac
5125
5126     else
5127         disable mipsdsp
5128         disable mipsdspr2
5129         # Disable DSP stuff for generic CPU, it can't be detected at runtime.
5130         warn 'generic cpu selected'
5131     fi
5132
5133 elif enabled ppc; then
5134
5135     disable ldbrx
5136
5137     case $(tolower $cpu) in
5138         601|ppc601|powerpc601)
5139             cpuflags="-mcpu=601"
5140             disable altivec
5141         ;;
5142         603*|ppc603*|powerpc603*)
5143             cpuflags="-mcpu=603"
5144             disable altivec
5145         ;;
5146         604*|ppc604*|powerpc604*)
5147             cpuflags="-mcpu=604"
5148             disable altivec
5149         ;;
5150         g3|75*|ppc75*|powerpc75*)
5151             cpuflags="-mcpu=750"
5152             disable altivec
5153         ;;
5154         g4|745*|ppc745*|powerpc745*)
5155             cpuflags="-mcpu=7450"
5156             disable vsx
5157         ;;
5158         74*|ppc74*|powerpc74*)
5159             cpuflags="-mcpu=7400"
5160             disable vsx
5161         ;;
5162         g5|970|ppc970|powerpc970)
5163             cpuflags="-mcpu=970"
5164             disable vsx
5165         ;;
5166         power[3-6]*)
5167             cpuflags="-mcpu=$cpu"
5168             disable vsx
5169         ;;
5170         power[7-8]*)
5171             cpuflags="-mcpu=$cpu"
5172         ;;
5173         cell)
5174             cpuflags="-mcpu=cell"
5175             enable ldbrx
5176             disable vsx
5177         ;;
5178         e500mc)
5179             cpuflags="-mcpu=e500mc"
5180             disable altivec
5181         ;;
5182         e500v2)
5183             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
5184             disable altivec
5185             disable dcbzl
5186         ;;
5187         e500)
5188             cpuflags="-mcpu=8540 -mhard-float"
5189             disable altivec
5190             disable dcbzl
5191         ;;
5192     esac
5193
5194 elif enabled sparc; then
5195
5196     case $cpu in
5197         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
5198             cpuflags="-mcpu=$cpu"
5199         ;;
5200         ultrasparc*|niagara[234])
5201             cpuflags="-mcpu=$cpu"
5202         ;;
5203     esac
5204
5205 elif enabled x86; then
5206
5207     case $cpu in
5208         i[345]86|pentium)
5209             cpuflags="-march=$cpu"
5210             disable i686
5211             disable mmx
5212         ;;
5213         # targets that do NOT support nopl and conditional mov (cmov)
5214         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
5215             cpuflags="-march=$cpu"
5216             disable i686
5217         ;;
5218         # targets that do support nopl and conditional mov (cmov)
5219         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
5220         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
5221         |amdfam10|barcelona|b[dt]ver*|znver*)
5222             cpuflags="-march=$cpu"
5223             enable i686
5224             enable fast_cmov
5225         ;;
5226         # targets that do support conditional mov but on which it's slow
5227         pentium4|pentium4m|prescott|nocona)
5228             cpuflags="-march=$cpu"
5229             enable i686
5230             disable fast_cmov
5231         ;;
5232     esac
5233
5234 fi
5235
5236 if [ "$cpu" != generic ]; then
5237     add_cflags  $cpuflags
5238     add_asflags $cpuflags
5239     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
5240 fi
5241
5242 # compiler sanity check
5243 test_exec <<EOF
5244 int main(void){ return 0; }
5245 EOF
5246 if test "$?" != 0; then
5247     echo "$cc is unable to create an executable file."
5248     if test -z "$cross_prefix" && ! enabled cross_compile ; then
5249         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
5250         echo "Only do this if you know what cross compiling means."
5251     fi
5252     die "C compiler test failed."
5253 fi
5254
5255 add_cppflags -D_ISOC99_SOURCE
5256 add_cxxflags -D__STDC_CONSTANT_MACROS
5257 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
5258
5259 # some compilers silently accept -std=c11, so we also need to check that the
5260 # version macro is defined properly
5261 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
5262     add_cflags -std=c11 ||
5263     check_cflags -std=c99
5264
5265 check_cppflags -D_FILE_OFFSET_BITS=64
5266 check_cppflags -D_LARGEFILE_SOURCE
5267
5268 add_host_cppflags -D_ISOC99_SOURCE
5269 check_host_cflags -std=c99
5270 check_host_cflags -Wall
5271 check_host_cflags $host_cflags_speed
5272
5273 check_64bit(){
5274     arch32=$1
5275     arch64=$2
5276     expr=${3:-'sizeof(void *) > 4'}
5277     test_code cc "" "int test[2*($expr) - 1]" &&
5278         subarch=$arch64 || subarch=$arch32
5279     enable $subarch
5280 }
5281
5282 case "$arch" in
5283     aarch64|alpha|ia64)
5284         enabled shared && enable_weak pic
5285     ;;
5286     mips)
5287         check_64bit mips mips64 '_MIPS_SIM > 1'
5288         enabled shared && enable_weak pic
5289     ;;
5290     parisc)
5291         check_64bit parisc parisc64
5292         enabled shared && enable_weak pic
5293     ;;
5294     ppc)
5295         check_64bit ppc ppc64
5296         enabled shared && enable_weak pic
5297     ;;
5298     s390)
5299         check_64bit s390 s390x
5300         enabled shared && enable_weak pic
5301     ;;
5302     sparc)
5303         check_64bit sparc sparc64
5304         enabled shared && enable_weak pic
5305     ;;
5306     x86)
5307         check_64bit x86_32 x86_64
5308         # Treat x32 as x64 for now. Note it also needs pic if shared
5309         test "$subarch" = "x86_32" && test_cpp_condition stddef.h 'defined(__x86_64__)' &&
5310             subarch=x86_64 && enable x86_64 && disable x86_32
5311         if enabled x86_64; then
5312             enabled shared && enable_weak pic
5313             objformat=elf64
5314         fi
5315     ;;
5316 esac
5317
5318 # OS specific
5319 case $target_os in
5320     aix)
5321         SHFLAGS=-shared
5322         add_cppflags '-I\$(SRC_PATH)/compat/aix'
5323         enabled shared && add_ldflags -Wl,-brtl
5324         arflags='-Xany -r -c'
5325         striptype=""
5326         ;;
5327     android)
5328         disable symver
5329         enable section_data_rel_ro
5330         add_cflags -fPIE
5331         add_ldexeflags -fPIE -pie
5332         SLIB_INSTALL_NAME='$(SLIBNAME)'
5333         SLIB_INSTALL_LINKS=
5334         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
5335         ;;
5336     haiku)
5337         prefix_default="/boot/common"
5338         network_extralibs="-lnetwork"
5339         host_extralibs=
5340         ;;
5341     sunos)
5342         SHFLAGS='-shared -Wl,-h,$$(@F)'
5343         enabled x86 && append SHFLAGS -mimpure-text
5344         network_extralibs="-lsocket -lnsl"
5345         add_cppflags -D__EXTENSIONS__
5346         # When using suncc to build, the Solaris linker will mark
5347         # an executable with each instruction set encountered by
5348         # the Solaris assembler.  As our libraries contain their own
5349         # guards for processor-specific code, instead suppress
5350         # generation of the HWCAPS ELF section on Solaris x86 only.
5351         enabled_all suncc x86 &&
5352             echo "hwcap_1 = OVERRIDE;" > mapfile &&
5353             add_ldflags -Wl,-M,mapfile
5354         nm_default='nm -P -g'
5355         striptype=""
5356         version_script='-M'
5357         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
5358         ;;
5359     netbsd)
5360         disable symver
5361         oss_indev_extralibs="-lossaudio"
5362         oss_outdev_extralibs="-lossaudio"
5363         enabled gcc || check_ldflags -Wl,-zmuldefs
5364         ;;
5365     openbsd|bitrig)
5366         disable symver
5367         enable section_data_rel_ro
5368         striptype=""
5369         SHFLAGS='-shared'
5370         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
5371         SLIB_INSTALL_LINKS=
5372         oss_indev_extralibs="-lossaudio"
5373         oss_outdev_extralibs="-lossaudio"
5374         ;;
5375     dragonfly)
5376         disable symver
5377         ;;
5378     freebsd)
5379         ;;
5380     bsd/os)
5381         add_extralibs -lpoll -lgnugetopt
5382         strip="strip -d"
5383         ;;
5384     darwin)
5385         enabled ppc && add_asflags -force_cpusubtype_ALL
5386         install_name_dir_default='$(SHLIBDIR)'
5387         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
5388         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
5389         strip="${strip} -x"
5390         add_ldflags -Wl,-dynamic,-search_paths_first
5391         check_cflags -Werror=partial-availability
5392         SLIBSUF=".dylib"
5393         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
5394         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
5395         enabled x86_64 && objformat="macho64" || objformat="macho32"
5396         enabled_any pic shared x86_64 ||
5397             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
5398         check_headers dispatch/dispatch.h &&
5399             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
5400         if test -n "$sysroot"; then
5401             is_in -isysroot $cc $CPPFLAGS $CFLAGS || check_cppflags -isysroot $sysroot
5402             is_in -isysroot $ld $LDFLAGS          || check_ldflags  -isysroot $sysroot
5403         fi
5404         version_script='-exported_symbols_list'
5405         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
5406         # Workaround for Xcode 11 -fstack-check bug
5407         if enabled clang; then
5408             clang_version=$($cc -dumpversion)
5409             test ${clang_version%%.*} -eq 11 && add_cflags -fno-stack-check
5410         fi
5411         ;;
5412     msys*)
5413         die "Native MSYS builds are discouraged, please use the MINGW environment."
5414         ;;
5415     mingw32*|mingw64*)
5416         target_os=mingw32
5417         LIBTARGET=i386
5418         if enabled x86_64; then
5419             LIBTARGET="i386:x86-64"
5420         elif enabled arm; then
5421             LIBTARGET="arm"
5422         elif enabled aarch64; then
5423             LIBTARGET="arm64"
5424         fi
5425         if enabled shared; then
5426             # Cannot build both shared and static libs when using dllimport.
5427             disable static
5428         fi
5429         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5430         enabled x86_32 && check_ldflags -Wl,--large-address-aware
5431         shlibdir_default="$bindir_default"
5432         SLIBPREF=""
5433         SLIBSUF=".dll"
5434         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5435         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5436         if test_cmd lib.exe -list; then
5437             SLIB_EXTRA_CMD=-'lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5438             if enabled x86_64; then
5439                 LIBTARGET=x64
5440             fi
5441         else
5442             SLIB_EXTRA_CMD=-'$(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
5443         fi
5444         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5445         SLIB_INSTALL_LINKS=
5446         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5447         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5448         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" AR="$(AR_CMD)" NM="$(NM_CMD)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5449         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--disable-auto-image-base $$(@:$(SLIBSUF)=.def)'
5450         enabled x86_64 && objformat="win64" || objformat="win32"
5451         dlltool="${cross_prefix}dlltool"
5452         ranlib=:
5453         enable dos_paths
5454         check_ldflags -Wl,--nxcompat,--dynamicbase
5455         # Lets work around some stupidity in binutils.
5456         # ld will strip relocations from executables even though we need them
5457         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
5458         # however ld then forgets what the entry point should be (oops) so we
5459         # have to manually (re)set it.
5460         if enabled x86_32; then
5461             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
5462         elif enabled x86_64; then
5463             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
5464             check_ldflags -Wl,--high-entropy-va # binutils 2.25
5465             # Set image base >4GB for extra entropy with HEASLR
5466             add_ldexeflags -Wl,--image-base,0x140000000
5467             append SHFLAGS -Wl,--image-base,0x180000000
5468         fi
5469         ;;
5470     win32|win64)
5471         disable symver
5472         if enabled shared; then
5473             # Link to the import library instead of the normal static library
5474             # for shared libs.
5475             LD_LIB='%.lib'
5476             # Cannot build both shared and static libs with MSVC or icl.
5477             disable static
5478         fi
5479         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
5480         shlibdir_default="$bindir_default"
5481         SLIBPREF=""
5482         SLIBSUF=".dll"
5483         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5484         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5485         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5486         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5487         SLIB_INSTALL_LINKS=
5488         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5489         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5490         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5491         enabled x86_64 && objformat="win64" || objformat="win32"
5492         ranlib=:
5493         enable dos_paths
5494         ;;
5495     cygwin*)
5496         target_os=cygwin
5497         shlibdir_default="$bindir_default"
5498         SLIBPREF="cyg"
5499         SLIBSUF=".dll"
5500         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5501         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5502         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5503         SLIB_INSTALL_LINKS=
5504         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
5505         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
5506         enabled x86_64 && objformat="win64" || objformat="win32"
5507         enable dos_paths
5508         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5509         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5510         ;;
5511     *-dos|freedos|opendos)
5512         network_extralibs="-lsocket"
5513         objformat="coff"
5514         enable dos_paths
5515         ;;
5516     linux)
5517         enable section_data_rel_ro
5518         enabled_any arm aarch64 && enable_weak linux_perf
5519         ;;
5520     irix*)
5521         target_os=irix
5522         ranlib="echo ignoring ranlib"
5523         ;;
5524     os/2*)
5525         strip="lxlite -CS"
5526         striptype=""
5527         objformat="aout"
5528         add_cppflags -D_GNU_SOURCE
5529         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
5530         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
5531         LIBSUF="_s.a"
5532         SLIBPREF=""
5533         SLIBSUF=".dll"
5534         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5535         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
5536         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
5537             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
5538             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
5539             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
5540             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
5541         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
5542             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
5543         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5544         SLIB_INSTALL_LINKS=
5545         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
5546         enable dos_paths
5547         enable_weak os2threads
5548         ;;
5549     gnu/kfreebsd)
5550         add_cppflags -D_BSD_SOURCE
5551         ;;
5552     gnu)
5553         ;;
5554     qnx)
5555         add_cppflags -D_QNX_SOURCE
5556         network_extralibs="-lsocket"
5557         ;;
5558     symbian)
5559         SLIBSUF=".dll"
5560         enable dos_paths
5561         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
5562         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
5563         add_ldflags -Wl,--target1-abs,--no-undefined \
5564                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
5565                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
5566         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
5567                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
5568                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
5569         ;;
5570     minix)
5571         ;;
5572     none)
5573         ;;
5574     *)
5575         die "Unknown OS '$target_os'."
5576         ;;
5577 esac
5578
5579 # test if creating links works
5580 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5581 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5582 mkdir "$link_dest"
5583 $ln_s "$link_dest" "$link_name"
5584 touch "$link_dest/test_file"
5585 if [ "$source_path" != "." ] && [ "$source_path" != "src" ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5586     # create link to source path
5587     [ -e src ] && rm src
5588     $ln_s "$source_path" src
5589     source_link=src
5590 else
5591     # creating directory links doesn't work
5592     # fall back to using the full source path
5593     source_link="$source_path"
5594 fi
5595 # cleanup
5596 rm -r "$link_dest"
5597 rm -r "$link_name"
5598
5599 # determine libc flavour
5600
5601 probe_libc(){
5602     pfx=$1
5603     pfx_no_=${pfx%_}
5604     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5605     if test_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5606         eval ${pfx}libc_type=uclibc
5607         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5608     elif test_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5609         eval ${pfx}libc_type=glibc
5610         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5611     # MinGW headers can be installed on Cygwin, so check for newlib first.
5612     elif test_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5613         eval ${pfx}libc_type=newlib
5614         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
5615     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5616     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5617         eval ${pfx}libc_type=mingw64
5618         if test_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5619             add_compat msvcrt/snprintf.o
5620             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5621         fi
5622         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5623         eval test \$${pfx_no_}cc_type = "gcc" &&
5624             add_${pfx}cppflags -D__printf__=__gnu_printf__
5625         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5626             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5627         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5628     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5629          test_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5630         eval ${pfx}libc_type=mingw32
5631         test_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5632             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5633             die "ERROR: MinGW32 runtime version must be >= 3.15."
5634         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5635         test_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
5636             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5637         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5638             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5639         eval test \$${pfx_no_}cc_type = "gcc" &&
5640             add_${pfx}cppflags -D__printf__=__gnu_printf__
5641         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5642     elif test_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5643         eval ${pfx}libc_type=msvcrt
5644         if test_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5645             if [ "$pfx" = host_ ]; then
5646                 add_host_cppflags -Dsnprintf=_snprintf
5647             else
5648                 add_compat strtod.o strtod=avpriv_strtod
5649                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5650                                              _snprintf=avpriv_snprintf  \
5651                                              vsnprintf=avpriv_vsnprintf
5652             fi
5653         fi
5654         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5655         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5656         # 0x601 by default unless something else is set by the user.
5657         # This can easily lead to us detecting functions only present
5658         # in such new versions and producing binaries requiring windows 7.0.
5659         # Therefore explicitly set the default to Vista unless the user has
5660         # set something else on the command line.
5661         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5662         # family. For these cases, configure is free to use any functions
5663         # found in the SDK headers by default. (Alternatively, we could force
5664         # _WIN32_WINNT to 0x0602 in that case.)
5665         test_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5666             { test_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0600; }
5667 #ifdef WINAPI_FAMILY
5668 #include <winapifamily.h>
5669 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5670 #error not desktop
5671 #endif
5672 #endif
5673 EOF
5674         if [ "$pfx" = "" ]; then
5675             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5676             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5677         fi
5678     elif test_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5679         eval ${pfx}libc_type=klibc
5680     elif test_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5681         eval ${pfx}libc_type=bionic
5682     elif test_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5683         eval ${pfx}libc_type=solaris
5684         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5685     elif test_${pfx}cpp_condition sys/version.h "defined __DJGPP__"; then
5686         eval ${pfx}libc_type=djgpp
5687         add_cppflags -U__STRICT_ANSI__
5688         add_cflags "-include $source_path/compat/djgpp/math.h"
5689         add_compat djgpp/math.o
5690     fi
5691     test_${pfx}cc <<EOF
5692 #include <time.h>
5693 void *v = localtime_r;
5694 EOF
5695 test "$?" != 0 && test_${pfx}cc -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 <<EOF && add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5696 #include <time.h>
5697 void *v = localtime_r;
5698 EOF
5699
5700     eval test -n "\${${pfx}libc_type}" && enable ${pfx}libc_${libc_type}
5701 }
5702
5703 probe_libc
5704 probe_libc host_
5705
5706 # hacks for compiler/libc/os combinations
5707
5708 case $libc_type in
5709     bionic)
5710         add_compat strtod.o strtod=avpriv_strtod
5711         ;;
5712 esac
5713
5714 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5715     add_cppflags '-I\$(SRC_PATH)/compat/float'
5716
5717 test_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5718
5719 set_default libdir
5720 : ${shlibdir_default:="$libdir"}
5721 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5722
5723 set_default $PATHS_LIST
5724 set_default nm
5725
5726 disabled optimizations || enabled ossfuzz || check_cflags -fomit-frame-pointer
5727
5728 enable_weak_pic() {
5729     disabled pic && return
5730     enable pic
5731     add_cppflags -DPIC
5732     case "$target_os" in
5733     mingw*|cygwin*|win*)
5734         ;;
5735     *)
5736         add_cflags -fPIC
5737         add_asflags -fPIC
5738         ;;
5739     esac
5740 }
5741
5742 enabled pic && enable_weak_pic
5743
5744 test_cc <<EOF || die "Symbol mangling check failed."
5745 int ff_extern;
5746 EOF
5747 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5748 extern_prefix=${sym%%ff_extern*}
5749
5750 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
5751
5752 for restrict_keyword in restrict __restrict__ __restrict ""; do
5753     test_code cc "" "char * $restrict_keyword p" && break
5754 done
5755
5756 check_cc pragma_deprecated "" '_Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"")'
5757
5758 # The global variable ensures the bits appear unchanged in the object file.
5759 test_cc <<EOF || die "endian test failed"
5760 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5761 EOF
5762 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5763
5764 check_cc const_nan math.h "struct { double d; } static const bar[] = { { NAN } }"
5765
5766 if ! enabled ppc64 || enabled bigendian; then
5767     disable vsx
5768 fi
5769
5770 check_gas() {
5771     log "check_gas using '$as' as AS"
5772     # :vararg is used on aarch64, arm and ppc altivec
5773     check_as vararg "
5774 .macro m n, y:vararg=0
5775 \n: .int \y
5776 .endm
5777 m x" || return 1
5778     # .altmacro is only used in arm asm
5779     ! enabled arm || check_as gnu_as ".altmacro"
5780 }
5781
5782 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5783     nogas=:
5784     enabled_any arm aarch64 && nogas=die
5785     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5786     as_noop=-v
5787
5788     case $as_type in
5789         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5790         gcc)  gaspp_as_type=gas ;;
5791         *)    gaspp_as_type=$as_type ;;
5792     esac
5793
5794     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5795
5796     test "${as#*gas-preprocessor.pl}" != "$as" ||
5797     test_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5798         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5799
5800     if ! check_gas ; then
5801         as=${gas:=$as}
5802         check_gas || \
5803             $nogas "GNU assembler not found, install/update gas-preprocessor"
5804     fi
5805
5806     check_as as_func ".func test
5807                       .endfunc"
5808 fi
5809
5810 check_inline_asm inline_asm_labels '"1:\n"'
5811
5812 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5813
5814 if enabled aarch64; then
5815     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5816     # internal assembler in clang 3.3 does not support this instruction
5817     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5818     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5819
5820     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5821
5822 elif enabled alpha; then
5823
5824     check_cflags -mieee
5825
5826 elif enabled arm; then
5827
5828     enabled msvc && check_cpp_condition thumb stddef.h "defined _M_ARMT"
5829     test_cpp_condition stddef.h "defined __thumb__" && test_cc <<EOF && enable_weak thumb
5830 float func(float a, float b){ return a+b; }
5831 EOF
5832     enabled thumb && check_cflags -mthumb || check_cflags -marm
5833
5834     if check_cpp_condition vfp_args stddef.h "defined __ARM_PCS_VFP"; then
5835         :
5836     elif check_cpp_condition vfp_args stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5837         :
5838     elif ! test_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5839         case "${cross_prefix:-$cc}" in
5840             *hardfloat*) enable vfp_args; fpabi=vfp ;;
5841             *) check_ld "cc" vfp_args <<EOF && fpabi=vfp || fpabi=soft ;;
5842 __asm__ (".eabi_attribute 28, 1");
5843 int main(void) { return 0; }
5844 EOF
5845         esac
5846         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5847     fi
5848
5849     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5850     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5851     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5852     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5853     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5854     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5855     enabled setend  && check_insn setend  'setend be'
5856
5857     [ $target_os = linux ] || [ $target_os = android ] ||
5858         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5859             $ARCH_EXT_LIST_ARM
5860
5861     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5862
5863     check_as as_arch_directive ".arch armv7-a"
5864     check_as as_dn_directive   "ra .dn d0.i16"
5865     check_as as_fpu_directive  ".fpu neon"
5866
5867     # llvm's integrated assembler supports .object_arch from llvm 3.5
5868     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
5869         check_as as_object_arch ".object_arch armv4"
5870
5871     # MS armasm fails to assemble our PIC constructs
5872     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5873
5874 elif enabled mips; then
5875
5876     # Check toolchain ISA level
5877     if enabled mips64; then
5878         enabled mips64r6 && check_inline_asm mips64r6 '"dlsa $0, $0, $0, 1"' &&
5879             disable mips64r2
5880
5881         enabled mips64r2 && check_inline_asm mips64r2 '"dext $0, $0, 0, 1"'
5882
5883         disable mips32r6 && disable mips32r5 && disable mips32r2
5884     else
5885         enabled mips32r6 && check_inline_asm mips32r6 '"aui $0, $0, 0"' &&
5886             disable mips32r5 && disable mips32r2
5887
5888         enabled mips32r5 && check_inline_asm mips32r5 '"eretnc"'
5889         enabled mips32r2 && check_inline_asm mips32r2 '"ext $0, $0, 0, 1"'
5890
5891         disable mips64r6 && disable mips64r5 && disable mips64r2
5892     fi
5893
5894     enabled mipsfpu && check_inline_asm mipsfpu '"cvt.d.l $f0, $f2"'
5895     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5896
5897     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5898     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5899
5900     # MSA and MSA2 can be detected at runtime so we supply extra flags here
5901     enabled mipsfpu && enabled msa && check_inline_asm msa '"addvi.b $w0, $w1, 1"' '-mmsa' && append MSAFLAGS '-mmsa'
5902     enabled msa && enabled msa2 && check_inline_asm msa2 '"nxbits.any.b $w0, $w0"' '-mmsa2' && append MSAFLAGS '-mmsa2'
5903
5904     # loongson2 have no switch cflag so we can only probe toolchain ability
5905     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"' && disable loongson3
5906
5907     # loongson3 is paired with MMI
5908     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"' '-mloongson-ext' && append MMIFLAGS '-mloongson-ext'
5909
5910     # MMI can be detected at runtime too
5911     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"' '-mloongson-mmi' && append MMIFLAGS '-mloongson-mmi'
5912
5913     if enabled bigendian && enabled msa; then
5914         disable msa
5915     fi
5916
5917 elif enabled parisc; then
5918
5919     if enabled gcc; then
5920         case $($cc -dumpversion) in
5921             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5922         esac
5923     fi
5924
5925 elif enabled ppc; then
5926
5927     enable local_aligned
5928
5929     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5930     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5931     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5932     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5933
5934     if enabled altivec; then
5935         check_cflags -maltivec -mabi=altivec
5936
5937         # check if our compiler supports Motorola AltiVec C API
5938         check_cc altivec altivec.h "vector signed int v1 = (vector signed int) { 0 };
5939                                     vector signed int v2 = (vector signed int) { 1 };
5940                                     v1 = vec_add(v1, v2);"
5941
5942         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5943     fi
5944
5945     if enabled vsx; then
5946         check_cflags -mvsx &&
5947         check_cc vsx altivec.h "int v[4] = { 0 };
5948                                 vector signed int v1 = vec_vsx_ld(0, v);"
5949     fi
5950
5951     if enabled power8; then
5952         check_cpp_condition power8 "altivec.h" "defined(_ARCH_PWR8)"
5953     fi
5954
5955 elif enabled x86; then
5956
5957     check_builtin rdtsc    intrin.h   "__rdtsc()"
5958     check_builtin mm_empty mmintrin.h "_mm_empty()"
5959
5960     enable local_aligned
5961
5962     # check whether EBP is available on x86
5963     # As 'i' is stored on the stack, this program will crash
5964     # if the base pointer is used to access it because the
5965     # base pointer is cleared in the inline assembly code.
5966     check_exec_crash <<EOF && enable ebp_available
5967 volatile int i=0;
5968 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5969 return i;
5970 EOF
5971
5972     # check whether EBX is available on x86
5973     check_inline_asm ebx_available '""::"b"(0)' &&
5974         check_inline_asm ebx_available '"":::"%ebx"'
5975
5976     # check whether xmm clobbers are supported
5977     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5978
5979     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5980         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5981
5982     # check whether binutils is new enough to compile SSSE3/MMXEXT
5983     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5984     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5985
5986     probe_x86asm(){
5987         x86asmexe_probe=$1
5988         if test_cmd $x86asmexe_probe -v; then
5989             x86asmexe=$x86asmexe_probe
5990             x86asm_type=nasm
5991             x86asm_debug="-g -F dwarf"
5992             X86ASMDEP=
5993             X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
5994         elif test_cmd $x86asmexe_probe --version; then
5995             x86asmexe=$x86asmexe_probe
5996             x86asm_type=yasm
5997             x86asm_debug="-g dwarf2"
5998             X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
5999             X86ASM_DEPFLAGS=
6000         fi
6001         check_x86asm x86asm "movbe ecx, [5]"
6002     }
6003
6004     if ! disabled_any asm mmx x86asm; then
6005         disable x86asm
6006         for program in $x86asmexe nasm yasm; do
6007             probe_x86asm $program && break
6008         done
6009         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
6010         X86ASMFLAGS="-f $objformat"
6011         enabled pic               && append X86ASMFLAGS "-DPIC"
6012         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
6013         case "$objformat" in
6014             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
6015         esac
6016
6017         enabled avx512 && check_x86asm avx512_external "vmovdqa32 [eax]{k1}{z}, zmm0"
6018         enabled avx2   && check_x86asm avx2_external   "vextracti128 xmm0, ymm0, 0"
6019         enabled xop    && check_x86asm xop_external    "vpmacsdd xmm0, xmm1, xmm2, xmm3"
6020         enabled fma4   && check_x86asm fma4_external   "vfmaddps ymm0, ymm1, ymm2, ymm3"
6021         check_x86asm cpunop          "CPU amdnop"
6022     fi
6023
6024     case "$cpu" in
6025         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
6026             disable fast_clz
6027         ;;
6028     esac
6029
6030 fi
6031
6032 check_cc intrinsics_neon arm_neon.h "int16x8_t test = vdupq_n_s16(0)"
6033
6034 check_ldflags -Wl,--as-needed
6035 check_ldflags -Wl,-z,noexecstack
6036
6037 if ! disabled network; then
6038     check_func getaddrinfo $network_extralibs
6039     check_func inet_aton $network_extralibs
6040
6041     check_type netdb.h "struct addrinfo"
6042     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
6043     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
6044     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
6045     check_type poll.h "struct pollfd"
6046     check_type netinet/sctp.h "struct sctp_event_subscribe"
6047     check_struct "sys/socket.h" "struct msghdr" msg_flags
6048     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
6049     check_type netinet/in.h "struct sockaddr_in6"
6050     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
6051     check_type "sys/types.h sys/socket.h" socklen_t
6052
6053     # Prefer arpa/inet.h over winsock2
6054     if check_headers arpa/inet.h ; then
6055         check_func closesocket
6056     elif check_headers winsock2.h ; then
6057         check_func_headers winsock2.h closesocket -lws2 &&
6058             network_extralibs="-lws2" ||
6059         { check_func_headers winsock2.h closesocket -lws2_32 &&
6060             network_extralibs="-lws2_32"; } || disable winsock2_h network
6061         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
6062
6063         check_type ws2tcpip.h socklen_t
6064         check_type ws2tcpip.h "struct addrinfo"
6065         check_type ws2tcpip.h "struct group_source_req"
6066         check_type ws2tcpip.h "struct ip_mreq_source"
6067         check_type ws2tcpip.h "struct ipv6_mreq"
6068         check_type winsock2.h "struct pollfd"
6069         check_struct winsock2.h "struct sockaddr" sa_len
6070         check_type ws2tcpip.h "struct sockaddr_in6"
6071         check_type ws2tcpip.h "struct sockaddr_storage"
6072     else
6073         disable network
6074     fi
6075 fi
6076
6077 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
6078 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
6079 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
6080 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
6081 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
6082 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
6083 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
6084
6085 case "$custom_allocator" in
6086     jemalloc)
6087         # jemalloc by default does not use a prefix
6088         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
6089     ;;
6090     tcmalloc)
6091         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
6092         malloc_prefix=tc_
6093     ;;
6094 esac
6095
6096 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
6097 check_func  ${malloc_prefix}memalign            && enable memalign
6098 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
6099
6100 check_func  access
6101 check_func_headers stdlib.h arc4random
6102 check_lib   clock_gettime time.h clock_gettime || check_lib clock_gettime time.h clock_gettime -lrt
6103 check_func  fcntl
6104 check_func  fork
6105 check_func  gethrtime
6106 check_func  getopt
6107 check_func  getrusage
6108 check_func  gettimeofday
6109 check_func  isatty
6110 check_func  mkstemp
6111 check_func  mmap
6112 check_func  mprotect
6113 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
6114 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
6115 check_func  sched_getaffinity
6116 check_func  setrlimit
6117 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
6118 check_func  strerror_r
6119 check_func  sysconf
6120 check_func  sysctl
6121 check_func  usleep
6122
6123 check_func_headers conio.h kbhit
6124 check_func_headers io.h setmode
6125 check_func_headers lzo/lzo1x.h lzo1x_999_compress
6126 check_func_headers mach/mach_time.h mach_absolute_time
6127 check_func_headers stdlib.h getenv
6128 check_func_headers sys/stat.h lstat
6129
6130 check_func_headers windows.h GetModuleHandle
6131 check_func_headers windows.h GetProcessAffinityMask
6132 check_func_headers windows.h GetProcessTimes
6133 check_func_headers windows.h GetStdHandle
6134 check_func_headers windows.h GetSystemTimeAsFileTime
6135 check_func_headers windows.h LoadLibrary
6136 check_func_headers windows.h MapViewOfFile
6137 check_func_headers windows.h PeekNamedPipe
6138 check_func_headers windows.h SetConsoleTextAttribute
6139 check_func_headers windows.h SetConsoleCtrlHandler
6140 check_func_headers windows.h SetDllDirectory
6141 check_func_headers windows.h Sleep
6142 check_func_headers windows.h VirtualAlloc
6143 check_func_headers glob.h glob
6144 enabled xlib &&
6145     check_lib xlib "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
6146
6147 check_headers direct.h
6148 check_headers dirent.h
6149 check_headers dxgidebug.h
6150 check_headers dxva.h
6151 check_headers dxva2api.h -D_WIN32_WINNT=0x0600
6152 check_headers io.h
6153 check_headers linux/perf_event.h
6154 check_headers libcrystalhd/libcrystalhd_if.h
6155 check_headers malloc.h
6156 check_headers mftransform.h
6157 check_headers net/udplite.h
6158 check_headers poll.h
6159 check_headers sys/param.h
6160 check_headers sys/resource.h
6161 check_headers sys/select.h
6162 check_headers sys/time.h
6163 check_headers sys/un.h
6164 check_headers termios.h
6165 check_headers unistd.h
6166 check_headers valgrind/valgrind.h
6167 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
6168 check_headers windows.h
6169 check_headers X11/extensions/XvMClib.h
6170 check_headers asm/types.h
6171
6172 # it seems there are versions of clang in some distros that try to use the
6173 # gcc headers, which explodes for stdatomic
6174 # so we also check that atomics actually work here
6175 check_builtin stdatomic stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0); foo += bar"
6176
6177 check_lib advapi32 "windows.h"            RegCloseKey          -ladvapi32
6178 check_lib bcrypt   "windows.h bcrypt.h"   BCryptGenRandom      -lbcrypt &&
6179     check_cpp_condition bcrypt bcrypt.h "defined BCRYPT_RNG_ALGORITHM"
6180 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
6181 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
6182 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
6183
6184 check_lib android android/native_window.h ANativeWindow_acquire -landroid
6185 check_lib mediandk "stdint.h media/NdkImage.h" AImage_delete -lmediandk
6186 check_lib camera2ndk "stdbool.h stdint.h camera/NdkCameraManager.h" ACameraManager_create -lcamera2ndk
6187
6188 enabled appkit       && check_apple_framework AppKit
6189 enabled audiotoolbox && check_apple_framework AudioToolbox
6190 enabled avfoundation && check_apple_framework AVFoundation
6191 enabled coreimage    && check_apple_framework CoreImage
6192 enabled videotoolbox && check_apple_framework VideoToolbox
6193
6194 check_apple_framework CoreFoundation
6195 check_apple_framework CoreMedia
6196 check_apple_framework CoreVideo
6197 check_apple_framework CoreAudio
6198
6199 enabled avfoundation && {
6200     disable coregraphics applicationservices
6201     check_lib coregraphics        CoreGraphics/CoreGraphics.h               CGGetActiveDisplayList "-framework CoreGraphics" ||
6202     check_lib applicationservices ApplicationServices/ApplicationServices.h CGGetActiveDisplayList "-framework ApplicationServices"; }
6203
6204 enabled videotoolbox && {
6205     check_lib coreservices CoreServices/CoreServices.h UTGetOSTypeFromString "-framework CoreServices"
6206     check_func_headers CoreMedia/CMFormatDescription.h kCMVideoCodecType_HEVC "-framework CoreMedia"
6207     check_func_headers CoreVideo/CVPixelBuffer.h kCVPixelFormatType_420YpCbCr10BiPlanarVideoRange "-framework CoreVideo"
6208     check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferTransferFunction_SMPTE_ST_2084_PQ "-framework CoreVideo"
6209     check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferTransferFunction_ITU_R_2100_HLG "-framework CoreVideo"
6210     check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferTransferFunction_Linear "-framework CoreVideo"
6211 }
6212
6213 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
6214
6215 check_type "windows.h dxva.h" "DXVA_PicParams_AV1" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
6216 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
6217 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
6218 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
6219 check_type "windows.h d3d11.h" "ID3D11VideoContext"
6220 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
6221 check_func_headers mfapi.h MFCreateAlignedMemoryBuffer -lmfplat
6222
6223 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
6224 check_type "vdpau/vdpau.h" "VdpPictureInfoVP9"
6225
6226 if [ -z "$nvccflags" ]; then
6227     nvccflags=$nvccflags_default
6228 fi
6229
6230 if enabled x86_64 || enabled ppc64 || enabled aarch64; then
6231     nvccflags="$nvccflags -m64"
6232 else
6233     nvccflags="$nvccflags -m32"
6234 fi
6235
6236 if enabled cuda_nvcc; then
6237     nvccflags="$nvccflags -ptx"
6238 else
6239     nvccflags="$nvccflags -S -nocudalib -nocudainc --cuda-device-only -include ${source_link}/compat/cuda/cuda_runtime.h"
6240     check_nvcc cuda_llvm
6241 fi
6242
6243 if ! disabled ffnvcodec; then
6244     ffnv_hdr_list="ffnvcodec/nvEncodeAPI.h ffnvcodec/dynlink_cuda.h ffnvcodec/dynlink_cuviddec.h ffnvcodec/dynlink_nvcuvid.h"
6245     check_pkg_config ffnvcodec "ffnvcodec >= 9.1.23.1" "$ffnv_hdr_list" "" || \
6246       check_pkg_config ffnvcodec "ffnvcodec >= 9.0.18.3 ffnvcodec < 9.1" "$ffnv_hdr_list" "" || \
6247       check_pkg_config ffnvcodec "ffnvcodec >= 8.2.15.10 ffnvcodec < 8.3" "$ffnv_hdr_list" "" || \
6248       check_pkg_config ffnvcodec "ffnvcodec >= 8.1.24.11 ffnvcodec < 8.2" "$ffnv_hdr_list" ""
6249 fi
6250
6251 check_cpp_condition winrt windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)"
6252
6253 if ! disabled w32threads && ! enabled pthreads; then
6254     check_func_headers "windows.h process.h" _beginthreadex &&
6255         check_type "windows.h" CONDITION_VARIABLE &&
6256         check_type "windows.h" INIT_ONCE &&
6257         enable w32threads || disable w32threads
6258     if ! enabled w32threads && enabled winrt; then
6259         check_func_headers "windows.h" CreateThread &&
6260             enable w32threads || disable w32threads
6261     fi
6262 fi
6263
6264 # check for some common methods of building with pthread support
6265 # do this before the optional library checks as some of them require pthreads
6266 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
6267     if check_lib pthreads pthread.h pthread_join   -pthread &&
6268        check_lib pthreads pthread.h pthread_create -pthread; then
6269         add_cflags -pthread
6270     elif check_lib pthreads pthread.h pthread_join   -pthreads &&
6271          check_lib pthreads pthread.h pthread_create -pthreads; then
6272         add_cflags -pthreads
6273     elif check_lib pthreads pthread.h pthread_join   -ldl -pthread &&
6274          check_lib pthreads pthread.h pthread_create -ldl -pthread; then
6275         add_cflags -ldl -pthread
6276     elif check_lib pthreads pthread.h pthread_join   -lpthreadGC2 &&
6277          check_lib pthreads pthread.h pthread_create -lpthreadGC2; then
6278         :
6279     elif check_lib pthreads pthread.h pthread_join   -lpthread &&
6280          check_lib pthreads pthread.h pthread_create -lpthread; then
6281         :
6282     elif check_func pthread_join && check_func pthread_create; then
6283         enable pthreads
6284     fi
6285     check_cc pthreads "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER"
6286
6287     if enabled pthreads; then
6288         check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
6289         check_func pthread_cancel $pthreads_extralibs
6290     fi
6291 fi
6292
6293 enabled  zlib && { check_pkg_config zlib zlib "zlib.h" zlibVersion ||
6294                    check_lib zlib   zlib.h      zlibVersion    -lz; }
6295 enabled bzlib && check_lib bzlib bzlib.h BZ2_bzlibVersion    -lbz2
6296 enabled  lzma && check_lib lzma   lzma.h lzma_version_number -llzma
6297
6298 # On some systems dynamic loading requires no extra linker flags
6299 check_lib libdl dlfcn.h "dlopen dlsym" || check_lib libdl dlfcn.h "dlopen dlsym" -ldl
6300
6301 check_lib libm math.h sin -lm
6302
6303 atan2f_args=2
6304 copysign_args=2
6305 hypot_args=2
6306 ldexpf_args=2
6307 powf_args=2
6308
6309 for func in $MATH_FUNCS; do
6310     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
6311 done
6312
6313 for func in $COMPLEX_FUNCS; do
6314     eval check_complexfunc $func \${${func}_args:-1}
6315 done
6316
6317 # these are off by default, so fail if requested and not available
6318 enabled avisynth          && require_headers "avisynth/avisynth_c.h"
6319 enabled cuda_nvcc         && { check_nvcc cuda_nvcc || die "ERROR: failed checking for nvcc."; }
6320 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
6321 enabled decklink          && { require_headers DeckLinkAPI.h &&
6322                                { test_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a0a0000" || die "ERROR: Decklink API version must be >= 10.10"; } }
6323 enabled frei0r            && require_headers "frei0r.h dlfcn.h"
6324 enabled gmp               && require gmp gmp.h mpz_export -lgmp
6325 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init
6326 enabled jni               && { [ $target_os = "android" ] && check_headers jni.h && enabled pthreads || die "ERROR: jni not found"; }
6327 enabled ladspa            && require_headers "ladspa.h dlfcn.h"
6328 enabled libaom            && require_pkg_config libaom "aom >= 1.0.0" aom/aom_codec.h aom_codec_version
6329 enabled libaribb24        && { check_pkg_config libaribb24 "aribb24 > 1.0.3" "aribb24/aribb24.h" arib_instance_new ||
6330                                { enabled gpl && require_pkg_config libaribb24 aribb24 "aribb24/aribb24.h" arib_instance_new; } ||
6331                                die "ERROR: libaribb24 requires version higher than 1.0.3 or --enable-gpl."; }
6332 enabled lv2               && require_pkg_config lv2 lilv-0 "lilv/lilv.h" lilv_world_new
6333 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
6334 enabled libass            && require_pkg_config libass libass ass/ass.h ass_library_init
6335 enabled libbluray         && require_pkg_config libbluray libbluray libbluray/bluray.h bd_open
6336 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
6337 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
6338                              { check_lib libcelt celt/celt.h celt_decoder_create_custom -lcelt0 ||
6339                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
6340 enabled libcaca           && require_pkg_config libcaca caca caca.h caca_create_canvas
6341 enabled libcodec2         && require libcodec2 codec2/codec2.h codec2_create -lcodec2
6342 enabled libdav1d          && require_pkg_config libdav1d "dav1d >= 0.5.0" "dav1d/dav1d.h" dav1d_version
6343 enabled libdavs2          && require_pkg_config libdavs2 "davs2 >= 1.6.0" davs2.h davs2_decoder_open
6344 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
6345 enabled libdrm            && require_pkg_config libdrm libdrm xf86drm.h drmGetVersion
6346 enabled libfdk_aac        && { check_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
6347                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
6348                                  warn "using libfdk without pkg-config"; } }
6349 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"
6350 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_extralibs
6351 enabled fontconfig        && enable libfontconfig
6352 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
6353 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
6354 enabled libfribidi        && require_pkg_config libfribidi fribidi fribidi.h fribidi_version_info
6355 enabled libglslang        && require_cpp libglslang glslang/SPIRV/GlslangToSpv.h "glslang::TIntermediate*" -lglslang -lMachineIndependent -lOSDependent -lHLSL -lOGLCompiler -lGenericCodeGen -lSPVRemapper -lSPIRV -lSPIRV-Tools-opt -lSPIRV-Tools -lpthread -lstdc++
6356 enabled libgme            && { check_pkg_config libgme libgme gme/gme.h gme_new_emu ||
6357                                require libgme gme/gme.h gme_new_emu -lgme -lstdc++; }
6358 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
6359                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
6360                                done || die "ERROR: libgsm not found"; }
6361 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc $pthreads_extralibs
6362 enabled libklvanc         && require libklvanc libklvanc/vanc.h klvanc_context_create -lklvanc
6363 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
6364 enabled liblensfun        && require_pkg_config liblensfun lensfun lensfun.h lf_db_new
6365 # While it may appear that require is being used as a pkg-config
6366 # fallback for libmfx, it is actually being used to detect a different
6367 # installation route altogether.  If libmfx is installed via the Intel
6368 # Media SDK or Intel Media Server Studio, these don't come with
6369 # pkg-config support.  Instead, users should make sure that the build
6370 # can find the libraries and headers through other means.
6371 enabled libmfx            && { check_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit ||
6372                                { require libmfx "mfx/mfxvideo.h" MFXInit "-llibmfx $advapi32_extralibs" && warn "using libmfx without pkg-config"; } }
6373 if enabled libmfx; then
6374    check_cc MFX_CODEC_VP9 "mfx/mfxvp9.h mfx/mfxstructures.h" "MFX_CODEC_VP9"
6375 fi
6376
6377 enabled libmodplug        && require_pkg_config libmodplug libmodplug libmodplug/modplug.h ModPlug_Load
6378 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame $libm_extralibs
6379 enabled libmysofa         && { check_pkg_config libmysofa libmysofa mysofa.h mysofa_neighborhood_init_withstepdefine ||
6380                                require libmysofa mysofa.h mysofa_neighborhood_init_withstepdefine -lmysofa $zlib_extralibs; }
6381 enabled libnpp            && { check_lib libnpp npp.h nppGetLibVersion -lnppig -lnppicc -lnppc -lnppidei ||
6382                                check_lib libnpp npp.h nppGetLibVersion -lnppi -lnppc -lnppidei ||
6383                                die "ERROR: libnpp not found"; }
6384 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
6385 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
6386 enabled libopencv         && { check_headers opencv2/core/core_c.h &&
6387                                { check_pkg_config libopencv opencv opencv2/core/core_c.h cvCreateImageHeader ||
6388                                  require libopencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
6389                                require_pkg_config libopencv opencv opencv/cxcore.h cvCreateImageHeader; }
6390 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
6391 enabled libopenjpeg       && { check_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version ||
6392                                { require_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } }
6393 enabled libopenmpt        && require_pkg_config libopenmpt "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create -lstdc++ && append libopenmpt_extralibs "-lstdc++"
6394 enabled libopenvino       && require libopenvino c_api/ie_c_api.h ie_c_api_version -linference_engine_c_api
6395 enabled libopus           && {
6396     enabled libopus_decoder && {
6397         require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
6398     }
6399     enabled libopus_encoder && {
6400         require_pkg_config libopus opus opus_multistream.h opus_multistream_surround_encoder_create
6401     }
6402 }
6403 enabled libpulse          && require_pkg_config libpulse libpulse pulse/pulseaudio.h pa_context_new
6404 enabled librabbitmq       && require_pkg_config librabbitmq "librabbitmq >= 0.7.1" amqp.h amqp_new_connection
6405 enabled librav1e          && require_pkg_config librav1e "rav1e >= 0.1.0" rav1e.h rav1e_context_new
6406 enabled librsvg           && require_pkg_config librsvg librsvg-2.0 librsvg-2.0/librsvg/rsvg.h rsvg_handle_render_cairo
6407 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
6408 enabled librubberband     && require_pkg_config librubberband "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new -lstdc++ && append librubberband_extralibs "-lstdc++"
6409 enabled libshine          && require_pkg_config libshine shine shine/layer3.h shine_encode_buffer
6410 enabled libsmbclient      && { check_pkg_config libsmbclient smbclient libsmbclient.h smbc_init ||
6411                                require libsmbclient libsmbclient.h smbc_init -lsmbclient; }
6412 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy -lstdc++
6413 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
6414 enabled libssh            && require_pkg_config libssh libssh libssh/sftp.h sftp_init
6415 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init
6416 enabled libsrt            && require_pkg_config libsrt "srt >= 1.3.0" srt/srt.h srt_socket
6417 enabled libsvtav1         && require_pkg_config libsvtav1 "SvtAv1Enc >= 0.8.4" EbSvtAv1Enc.h svt_av1_enc_init_handle
6418 enabled libtensorflow     && require libtensorflow tensorflow/c/c_api.h TF_Version -ltensorflow
6419 enabled libtesseract      && require_pkg_config libtesseract tesseract tesseract/capi.h TessBaseAPICreate
6420 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
6421 enabled libtls            && require_pkg_config libtls libtls tls.h tls_configure
6422 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
6423                              { check_lib libtwolame twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
6424                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
6425 enabled libuavs3d         && require_pkg_config libuavs3d "uavs3d >= 1.1.41" uavs3d.h uavs3d_decode
6426 enabled libv4l2           && require_pkg_config libv4l2 libv4l2 libv4l2.h v4l2_ioctl
6427 enabled libvidstab        && require_pkg_config libvidstab "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
6428 enabled libvmaf           && require_pkg_config libvmaf "libvmaf >= 1.5.2" libvmaf.h compute_vmaf
6429 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
6430 enabled libvorbis         && require_pkg_config libvorbis vorbis vorbis/codec.h vorbis_info_init &&
6431                              require_pkg_config libvorbisenc vorbisenc vorbis/vorbisenc.h vorbis_encode_init
6432
6433 enabled libvpx            && {
6434     enabled libvpx_vp8_decoder && {
6435         check_pkg_config libvpx_vp8_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
6436             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"
6437     }
6438     enabled libvpx_vp8_encoder && {
6439         check_pkg_config libvpx_vp8_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
6440             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"
6441     }
6442     enabled libvpx_vp9_decoder && {
6443         check_pkg_config libvpx_vp9_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
6444             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"
6445     }
6446     enabled libvpx_vp9_encoder && {
6447         check_pkg_config libvpx_vp9_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
6448             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"
6449     }
6450     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
6451         die "libvpx enabled but no supported decoders found"
6452     fi
6453 }
6454
6455 enabled libwebp           && {
6456     enabled libwebp_encoder      && require_pkg_config libwebp "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
6457     enabled libwebp_anim_encoder && check_pkg_config libwebp_anim_encoder "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit; }
6458 enabled libx264           && { check_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode ||
6459                                { require libx264 "stdint.h x264.h" x264_encoder_encode "-lx264 $pthreads_extralibs $libm_extralibs" &&
6460                                  warn "using libx264 without pkg-config"; } } &&
6461                              require_cpp_condition libx264 x264.h "X264_BUILD >= 118" &&
6462                              check_cpp_condition libx262 x264.h "X264_MPEG2"
6463 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
6464                              require_cpp_condition libx265 x265.h "X265_BUILD >= 70"
6465 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode "-lxavs $pthreads_extralibs $libm_extralibs"
6466 enabled libxavs2          && require_pkg_config libxavs2 "xavs2 >= 1.3.0" "stdint.h xavs2.h" xavs2_api_get
6467 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
6468 enabled libzimg           && require_pkg_config libzimg "zimg >= 2.7.0" zimg.h zimg_get_api_version
6469 enabled libzmq            && require_pkg_config libzmq "libzmq >= 4.2.1" zmq.h zmq_ctx_new
6470 enabled libzvbi           && require_pkg_config libzvbi zvbi-0.2 libzvbi.h vbi_decoder_new &&
6471                              { test_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
6472                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
6473 enabled libxml2           && require_pkg_config libxml2 libxml-2.0 libxml2/libxml/xmlversion.h xmlCheckVersion
6474 enabled mbedtls           && { check_pkg_config mbedtls mbedtls mbedtls/x509_crt.h mbedtls_x509_crt_init ||
6475                                check_pkg_config mbedtls mbedtls mbedtls/ssl.h mbedtls_ssl_init ||
6476                                check_lib mbedtls mbedtls/ssl.h mbedtls_ssl_init -lmbedtls -lmbedx509 -lmbedcrypto ||
6477                                die "ERROR: mbedTLS not found"; }
6478 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
6479 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
6480                                { ! enabled cross_compile &&
6481                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
6482                                  add_ldflags -L/opt/vc/lib/ &&
6483                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
6484                                die "ERROR: mmal not found" &&
6485                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
6486 enabled openal            && { { for al_extralibs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
6487                                check_lib openal 'AL/al.h' alGetError "${al_extralibs}" && break; done } ||
6488                                die "ERROR: openal not found"; } &&
6489                              { test_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
6490                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
6491 enabled opencl            && { check_pkg_config opencl OpenCL CL/cl.h clEnqueueNDRangeKernel ||
6492                                check_lib opencl OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
6493                                check_lib opencl CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
6494                                die "ERROR: opencl not found"; } &&
6495                              { test_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
6496                                test_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
6497                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
6498 enabled opengl            && { check_lib opengl GL/glx.h glXGetProcAddress "-lGL" ||
6499                                check_lib opengl windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
6500                                check_lib opengl OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
6501                                check_lib opengl ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
6502                                die "ERROR: opengl not found."
6503                              }
6504 enabled omx_rpi           && { test_code cc OMX_Core.h OMX_IndexConfigBrcmVideoRequestIFrame ||
6505                                { ! enabled cross_compile &&
6506                                  add_cflags -isystem/opt/vc/include/IL &&
6507                                  test_code cc OMX_Core.h OMX_IndexConfigBrcmVideoRequestIFrame; } ||
6508                                die "ERROR: OpenMAX IL headers from raspberrypi/firmware not found"; } &&
6509                              enable omx
6510 enabled omx               && require_headers OMX_Core.h
6511 enabled openssl           && { check_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
6512                                check_pkg_config openssl openssl openssl/ssl.h SSL_library_init ||
6513                                check_lib openssl openssl/ssl.h OPENSSL_init_ssl -lssl -lcrypto ||
6514                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
6515                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
6516                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
6517                                die "ERROR: openssl not found"; }
6518 enabled pocketsphinx      && require_pkg_config pocketsphinx pocketsphinx pocketsphinx/pocketsphinx.h ps_init
6519 enabled rkmpp             && { require_pkg_config rkmpp rockchip_mpp  rockchip/rk_mpi.h mpp_create &&
6520                                require_pkg_config rockchip_mpp "rockchip_mpp >= 1.3.7" rockchip/rk_mpi.h mpp_create &&
6521                                { enabled libdrm ||
6522                                  die "ERROR: rkmpp requires --enable-libdrm"; }
6523                              }
6524 enabled vapoursynth       && require_pkg_config vapoursynth "vapoursynth-script >= 42" VSScript.h vsscript_init
6525
6526
6527 if enabled gcrypt; then
6528     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
6529     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
6530         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
6531         gcrypt_extralibs=$("${GCRYPT_CONFIG}" --libs)
6532         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_extralibs ||
6533             die "ERROR: gcrypt not found"
6534         add_cflags $gcrypt_cflags
6535     else
6536         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
6537     fi
6538 fi
6539
6540 if enabled sdl2; then
6541     SDL2_CONFIG="${cross_prefix}sdl2-config"
6542     test_pkg_config sdl2 "sdl2 >= 2.0.1 sdl2 < 2.1.0" SDL_events.h SDL_PollEvent
6543     if disabled sdl2 && "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
6544         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
6545         sdl2_extralibs=$("${SDL2_CONFIG}" --libs)
6546         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
6547         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
6548         check_func_headers SDL_events.h SDL_PollEvent $sdl2_extralibs $sdl2_cflags &&
6549             enable sdl2
6550     fi
6551     if test $target_os = "mingw32"; then
6552         sdl2_extralibs=$(filter_out '-mwindows' $sdl2_extralibs)
6553     fi
6554 fi
6555
6556 if enabled decklink; then
6557     case $target_os in
6558         mingw32*|mingw64*|win32|win64)
6559             decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
6560             decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
6561             ;;
6562     esac
6563 fi
6564
6565 enabled securetransport &&
6566     check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
6567     check_lib securetransport "Security/SecureTransport.h Security/Security.h" "SSLCreateContext" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" ||
6568         disable securetransport
6569
6570 enabled securetransport &&
6571     check_func SecItemImport "-Wl,-framework,CoreFoundation -Wl,-framework,Security"
6572
6573 enabled schannel &&
6574     check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
6575     test_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" &&
6576     schannel_extralibs="-lsecur32" ||
6577         disable schannel
6578
6579 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
6580 enabled makeinfo \
6581     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
6582     && enable makeinfo_html || disable makeinfo_html
6583 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
6584 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
6585 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
6586 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
6587
6588 # check V4L2 codecs available in the API
6589 if enabled v4l2_m2m; then
6590     check_headers linux/fb.h
6591     check_headers linux/videodev2.h
6592     test_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6593     check_cc v4l2_m2m linux/videodev2.h "int i = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_VIDEO_M2M | V4L2_BUF_FLAG_LAST;"
6594     check_cc vc1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VC1_ANNEX_G;"
6595     check_cc mpeg1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG1;"
6596     check_cc mpeg2_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG2;"
6597     check_cc mpeg4_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG4;"
6598     check_cc hevc_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_HEVC;"
6599     check_cc h263_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H263;"
6600     check_cc h264_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H264;"
6601     check_cc vp8_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP8;"
6602     check_cc vp9_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP9;"
6603 fi
6604
6605 check_headers sys/videoio.h
6606 test_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6607
6608 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
6609 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
6610 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
6611 # w32api 3.12 had it defined wrong
6612 check_cpp_condition vfwcap_defines vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER"
6613
6614 check_type "dshow.h" IBaseFilter
6615
6616 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
6617 check_headers "dev/bktr/ioctl_meteor.h dev/bktr/ioctl_bt848.h"                   ||
6618     check_headers "machine/ioctl_meteor.h machine/ioctl_bt848.h"                 ||
6619     check_headers "dev/video/meteor/ioctl_meteor.h dev/video/bktr/ioctl_bt848.h" ||
6620     check_headers "dev/ic/bt8xx.h"
6621
6622 if check_struct sys/soundcard.h audio_buf_info bytes; then
6623     enable_sanitized sys/soundcard.h
6624 else
6625     test_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_sanitized sys/soundcard.h
6626     #include <sys/soundcard.h>
6627     audio_buf_info abc;
6628 EOF
6629 fi
6630
6631 enabled alsa && { check_pkg_config alsa alsa "alsa/asoundlib.h" snd_pcm_htimestamp ||
6632                   check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound; }
6633
6634 enabled libjack &&
6635     require_pkg_config libjack jack jack/jack.h jack_port_get_latency_range
6636
6637 enabled sndio && check_lib sndio sndio.h sio_open -lsndio
6638
6639 if enabled libcdio; then
6640     check_pkg_config libcdio libcdio_paranoia "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open ||
6641     check_pkg_config libcdio libcdio_paranoia "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open ||
6642     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6643     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6644     die "ERROR: No usable libcdio/cdparanoia found"
6645 fi
6646
6647 enabled libxcb && check_pkg_config libxcb "xcb >= 1.4" xcb/xcb.h xcb_connect ||
6648     disable libxcb_shm libxcb_shape libxcb_xfixes
6649
6650 if enabled libxcb; then
6651     enabled libxcb_shm    && check_pkg_config libxcb_shm    xcb-shm    xcb/shm.h    xcb_shm_attach
6652     enabled libxcb_shape  && check_pkg_config libxcb_shape  xcb-shape  xcb/shape.h  xcb_shape_get_rectangles
6653     enabled libxcb_xfixes && check_pkg_config libxcb_xfixes xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image
6654 fi
6655
6656 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6657
6658 # d3d11va requires linking directly to dxgi and d3d11 if not building for
6659 # the desktop api partition
6660 test_cpp <<EOF && enable uwp && d3d11va_extralibs="-ldxgi -ld3d11"
6661 #ifdef WINAPI_FAMILY
6662 #include <winapifamily.h>
6663 #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
6664 #error desktop, not uwp
6665 #else
6666 // WINAPI_FAMILY_APP, WINAPI_FAMILY_PHONE_APP => UWP
6667 #endif
6668 #else
6669 #error no family set
6670 #endif
6671 EOF
6672
6673 enabled libdrm &&
6674     check_pkg_config libdrm_getfb2 libdrm "xf86drmMode.h" drmModeGetFB2
6675
6676 enabled vaapi &&
6677     check_pkg_config vaapi "libva >= 0.35.0" "va/va.h" vaInitialize
6678
6679 if enabled vaapi; then
6680     check_pkg_config vaapi_drm "libva-drm" "va/va_drm.h" vaGetDisplayDRM
6681
6682     if enabled xlib; then
6683         check_pkg_config vaapi_x11 "libva-x11" "va/va_x11.h" vaGetDisplay
6684     fi
6685
6686     check_cpp_condition vaapi_1 "va/va.h" "VA_CHECK_VERSION(1, 0, 0)"
6687
6688     check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
6689     check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
6690     check_struct "va/va.h" "VADecPictureParameterBufferAV1" bit_depth_idx
6691     check_type   "va/va.h va/va_vpp.h" "VAProcFilterParameterBufferHDRToneMapping"
6692     check_struct "va/va.h va/va_vpp.h" "VAProcPipelineCaps" rotation_flags
6693     check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
6694     check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
6695     check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
6696     check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
6697 fi
6698
6699 if enabled_all opencl libdrm ; then
6700     check_type "CL/cl_intel.h" "clCreateImageFromFdINTEL_fn" &&
6701         enable opencl_drm_beignet
6702     check_func_headers "CL/cl_ext.h" clImportMemoryARM &&
6703         enable opencl_drm_arm
6704 fi
6705
6706 if enabled_all opencl vaapi ; then
6707     if enabled opencl_drm_beignet ; then
6708         enable opencl_vaapi_beignet
6709     else
6710         check_type "CL/cl.h CL/cl_va_api_media_sharing_intel.h" "clCreateFromVA_APIMediaSurfaceINTEL_fn" &&
6711             enable opencl_vaapi_intel_media
6712     fi
6713 fi
6714
6715 if enabled_all opencl dxva2 ; then
6716     check_type "CL/cl_dx9_media_sharing.h" cl_dx9_surface_info_khr &&
6717         enable opencl_dxva2
6718 fi
6719
6720 if enabled_all opencl d3d11va ; then
6721     check_type "CL/cl_d3d11.h" clGetDeviceIDsFromD3D11KHR_fn &&
6722         enable opencl_d3d11
6723 fi
6724
6725 enabled vdpau &&
6726     check_cpp_condition vdpau vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP"
6727
6728 enabled vdpau &&
6729     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
6730
6731 enabled crystalhd && check_lib crystalhd "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd
6732
6733 enabled vulkan &&
6734     require_pkg_config vulkan "vulkan >= 1.1.97" "vulkan/vulkan.h" vkCreateInstance
6735
6736 if enabled x86; then
6737     case $target_os in
6738         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6739             ;;
6740         *)
6741             disable ffnvcodec cuvid nvdec nvenc
6742             ;;
6743     esac
6744 elif enabled_any aarch64 ppc64 && ! enabled bigendian; then
6745     case $target_os in
6746         linux)
6747             ;;
6748         *)
6749             disable ffnvcodec cuvid nvdec nvenc
6750             ;;
6751     esac
6752 else
6753     disable ffnvcodec cuvid nvdec nvenc
6754 fi
6755
6756 enabled ffnvcodec && enable cuda
6757
6758 enabled nvenc &&
6759     test_cc -I$source_path <<EOF || disable nvenc
6760 #include <ffnvcodec/nvEncodeAPI.h>
6761 NV_ENCODE_API_FUNCTION_LIST flist;
6762 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6763 int main(void) { return 0; }
6764 EOF
6765
6766 if enabled_any nvdec cuvid; then
6767     check_type "ffnvcodec/dynlink_cuda.h ffnvcodec/dynlink_cuviddec.h" "CUVIDAV1PICPARAMS"
6768 fi
6769
6770 enabled amf &&
6771     check_cpp_condition amf "AMF/core/Version.h" \
6772         "(AMF_VERSION_MAJOR << 48 | AMF_VERSION_MINOR << 32 | AMF_VERSION_RELEASE << 16 | AMF_VERSION_BUILD_NUM) >= 0x0001000400090000"
6773
6774 # Funny iconv installations are not unusual, so check it after all flags have been set
6775 if enabled libc_iconv; then
6776     check_func_headers iconv.h iconv
6777 elif enabled iconv; then
6778     check_func_headers iconv.h iconv || check_lib iconv iconv.h iconv -liconv
6779 fi
6780
6781 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6782
6783 # add some useful compiler flags if supported
6784 check_cflags -Wdeclaration-after-statement
6785 check_cflags -Wall
6786 check_cflags -Wdisabled-optimization
6787 check_cflags -Wpointer-arith
6788 check_cflags -Wredundant-decls
6789 check_cflags -Wwrite-strings
6790 check_cflags -Wtype-limits
6791 check_cflags -Wundef
6792 check_cflags -Wmissing-prototypes
6793 check_cflags -Wno-pointer-to-int-cast
6794 check_cflags -Wstrict-prototypes
6795 check_cflags -Wempty-body
6796
6797 if enabled extra_warnings; then
6798     check_cflags -Wcast-qual
6799     check_cflags -Wextra
6800     check_cflags -Wpedantic
6801 fi
6802
6803 check_disable_warning(){
6804     warning_flag=-W${1#-Wno-}
6805     test_cflags $unknown_warning_flags $warning_flag && add_cflags $1
6806 }
6807
6808 test_cflags -Werror=unused-command-line-argument &&
6809     append unknown_warning_flags "-Werror=unused-command-line-argument"
6810 test_cflags -Werror=unknown-warning-option &&
6811     append unknown_warning_flags "-Werror=unknown-warning-option"
6812
6813 check_disable_warning -Wno-parentheses
6814 check_disable_warning -Wno-switch
6815 check_disable_warning -Wno-format-zero-length
6816 check_disable_warning -Wno-pointer-sign
6817 check_disable_warning -Wno-unused-const-variable
6818 check_disable_warning -Wno-bool-operation
6819 check_disable_warning -Wno-char-subscripts
6820
6821 check_disable_warning_headers(){
6822     warning_flag=-W${1#-Wno-}
6823     test_cflags $warning_flag && add_cflags_headers $1
6824 }
6825
6826 check_disable_warning_headers -Wno-deprecated-declarations
6827 check_disable_warning_headers -Wno-unused-variable
6828
6829 test_cc <<EOF && enable blocks_extension
6830 void (^block)(void);
6831 EOF
6832
6833 # add some linker flags
6834 check_ldflags -Wl,--warn-common
6835 check_ldflags -Wl,-rpath-link=:libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6836 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir && add_ldsoflags -Wl,-rpath,$libdir
6837 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6838
6839 # add some strip flags
6840 check_stripflags -x
6841
6842 enabled neon_clobber_test &&
6843     check_ldflags -Wl,--wrap,avcodec_open2              \
6844                   -Wl,--wrap,avcodec_decode_audio4      \
6845                   -Wl,--wrap,avcodec_decode_video2      \
6846                   -Wl,--wrap,avcodec_decode_subtitle2   \
6847                   -Wl,--wrap,avcodec_encode_audio2      \
6848                   -Wl,--wrap,avcodec_encode_video2      \
6849                   -Wl,--wrap,avcodec_encode_subtitle    \
6850                   -Wl,--wrap,avcodec_send_packet        \
6851                   -Wl,--wrap,avcodec_receive_packet     \
6852                   -Wl,--wrap,avcodec_send_frame         \
6853                   -Wl,--wrap,avcodec_receive_frame      \
6854                   -Wl,--wrap,swr_convert                \
6855                   -Wl,--wrap,avresample_convert ||
6856     disable neon_clobber_test
6857
6858 enabled xmm_clobber_test &&
6859     check_ldflags -Wl,--wrap,avcodec_open2              \
6860                   -Wl,--wrap,avcodec_decode_audio4      \
6861                   -Wl,--wrap,avcodec_decode_video2      \
6862                   -Wl,--wrap,avcodec_decode_subtitle2   \
6863                   -Wl,--wrap,avcodec_encode_audio2      \
6864                   -Wl,--wrap,avcodec_encode_video2      \
6865                   -Wl,--wrap,avcodec_encode_subtitle    \
6866                   -Wl,--wrap,avcodec_send_packet        \
6867                   -Wl,--wrap,avcodec_receive_packet     \
6868                   -Wl,--wrap,avcodec_send_frame         \
6869                   -Wl,--wrap,avcodec_receive_frame      \
6870                   -Wl,--wrap,swr_convert                \
6871                   -Wl,--wrap,avresample_convert         \
6872                   -Wl,--wrap,sws_scale ||
6873     disable xmm_clobber_test
6874
6875 check_ld "cc" proper_dce <<EOF
6876 extern const int array[512];
6877 static inline int func(void) { return array[0]; }
6878 int main(void) { return 0; }
6879 EOF
6880
6881 if enabled proper_dce; then
6882     echo "X { local: *; };" > $TMPV
6883     if test_ldflags -Wl,${version_script},$TMPV; then
6884         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6885         quotes='""'
6886         test_cc <<EOF && enable symver_asm_label
6887 void ff_foo(void) __asm__ ("av_foo@VERSION");
6888 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6889 EOF
6890         test_cc <<EOF && enable symver_gnu_asm
6891 __asm__(".symver ff_foo,av_foo@VERSION");
6892 void ff_foo(void) {}
6893 EOF
6894     fi
6895 fi
6896
6897 if [ -z "$optflags" ]; then
6898     if enabled small; then
6899         optflags=$cflags_size
6900     elif enabled optimizations; then
6901         optflags=$cflags_speed
6902     else
6903         optflags=$cflags_noopt
6904     fi
6905 fi
6906
6907 check_optflags(){
6908     check_cflags "$@"
6909     enabled lto && check_ldflags "$@"
6910 }
6911
6912 check_optflags $optflags
6913 check_optflags -fno-math-errno
6914 check_optflags -fno-signed-zeros
6915
6916 if enabled lto; then
6917     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6918     check_cflags  -flto
6919     check_ldflags -flto $cpuflags
6920     disable inline_asm_direct_symbol_refs
6921 fi
6922
6923 enabled ftrapv && check_cflags -ftrapv
6924
6925 test_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6926 int x;
6927 EOF
6928
6929
6930 if enabled icc; then
6931     # Just warnings, no remarks
6932     check_cflags -w1
6933     # -wd: Disable following warnings
6934     # 144, 167, 556: -Wno-pointer-sign
6935     # 188: enumerated type mixed with another type
6936     # 1292: attribute "foo" ignored
6937     # 1419: external declaration in primary source file
6938     # 10006: ignoring unknown option -fno-signed-zeros
6939     # 10148: ignoring unknown option -Wno-parentheses
6940     # 10156: ignoring option '-W'; no argument required
6941     # 13200: No EMMS instruction before call to function
6942     # 13203: No EMMS instruction before return from function
6943     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6944     # 11030: Warning unknown option --as-needed
6945     # 10156: ignoring option '-export'; no argument required
6946     check_ldflags -wd10156,11030
6947     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6948     enable ebp_available
6949     # The test above does not test linking
6950     enabled lto && disable symver_asm_label
6951     if enabled x86_32; then
6952         icc_version=$($cc -dumpversion)
6953         test ${icc_version%%.*} -ge 11 &&
6954             check_cflags -falign-stack=maintain-16-byte ||
6955             disable aligned_stack
6956     fi
6957 elif enabled gcc; then
6958     check_optflags -fno-tree-vectorize
6959     check_cflags -Werror=format-security
6960     check_cflags -Werror=implicit-function-declaration
6961     check_cflags -Werror=missing-prototypes
6962     check_cflags -Werror=return-type
6963     check_cflags -Werror=vla
6964     check_cflags -Wformat
6965     check_cflags -fdiagnostics-color=auto
6966     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6967     if enabled x86_32; then
6968         case $target_os in
6969         *bsd*)
6970             # BSDs don't guarantee a 16 byte aligned stack, but we can
6971             # request GCC to try to maintain 16 byte alignment throughout
6972             # function calls. Library entry points that might call assembly
6973             # functions align the stack. (The parameter means 2^4 bytes.)
6974             check_cflags -mpreferred-stack-boundary=4
6975             ;;
6976         esac
6977     fi
6978 elif enabled llvm_gcc; then
6979     check_cflags -mllvm -stack-alignment=16
6980 elif enabled clang; then
6981     if enabled x86_32; then
6982         # Clang doesn't support maintaining alignment without assuming the
6983         # same alignment in every function. If 16 byte alignment would be
6984         # enabled, one would also have to either add attribute_align_arg on
6985         # every single entry point into the libraries or enable -mstackrealign
6986         # (doing stack realignment in every single function).
6987         case $target_os in
6988         mingw32|win32|*bsd*)
6989             disable aligned_stack
6990             ;;
6991         *)
6992             check_cflags -mllvm -stack-alignment=16
6993             check_cflags -mstack-alignment=16
6994             ;;
6995         esac
6996     else
6997         check_cflags -mllvm -stack-alignment=16
6998         check_cflags -mstack-alignment=16
6999     fi
7000     check_cflags -Qunused-arguments
7001     check_cflags -Werror=implicit-function-declaration
7002     check_cflags -Werror=missing-prototypes
7003     check_cflags -Werror=return-type
7004 elif enabled cparser; then
7005     add_cflags -Wno-missing-variable-declarations
7006     add_cflags -Wno-empty-statement
7007 elif enabled armcc; then
7008     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
7009     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
7010     # 2523: use of inline assembly is deprecated
7011     add_cflags -W${armcc_opt},--diag_suppress=2523
7012     add_cflags -W${armcc_opt},--diag_suppress=1207
7013     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
7014     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
7015     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
7016     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
7017 elif enabled pathscale; then
7018     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
7019     disable inline_asm
7020 elif enabled_any msvc icl; then
7021     enabled x86_32 && disable aligned_stack
7022     enabled_all x86_32 debug && add_cflags -Oy-
7023     enabled debug && add_ldflags -debug
7024     enable pragma_deprecated
7025     if enabled icl; then
7026         # -Qansi-alias is basically -fstrict-aliasing, but does not work
7027         # (correctly) on icl 13.x.
7028         test_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
7029             add_cflags -Qansi-alias
7030         # Some inline asm is not compilable in debug
7031         if enabled debug; then
7032             disable ebp_available
7033             disable ebx_available
7034         fi
7035     fi
7036     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
7037     check_cpp_condition log2 crtversion.h "_VC_CRT_MAJOR_VERSION >= 12"
7038     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
7039     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
7040     # (as it ends up if the restrict redefine is done before including stdlib.h), while
7041     # MSVC 2013 and newer can handle it fine.
7042     # If this declspec fails, force including stdlib.h before the restrict redefinition
7043     # happens in config.h.
7044     if [ $restrict_keyword != restrict ]; then
7045         test_cc <<EOF || add_cflags -FIstdlib.h
7046 __declspec($restrict_keyword) void *foo(int);
7047 EOF
7048     fi
7049     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
7050     # Issue has been fixed in MSVC v19.00.24218.
7051     test_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
7052         check_cflags -d2SSAOptimizer-
7053     # enable utf-8 source processing on VS2015 U2 and newer
7054     test_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
7055         add_cflags -utf-8
7056 fi
7057
7058 for pfx in "" host_; do
7059     varname=${pfx%_}cc_type
7060     eval "type=\$$varname"
7061     if [ "$type" = "msvc" ]; then
7062         test_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
7063 static inline int foo(int a) { return a; }
7064 EOF
7065     fi
7066 done
7067
7068 case $as_type in
7069     clang)
7070         add_asflags -Qunused-arguments
7071     ;;
7072 esac
7073
7074 case $ld_type in
7075     clang)
7076         check_ldflags -Qunused-arguments
7077     ;;
7078 esac
7079
7080 enable frame_thread_encoder
7081
7082 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
7083
7084 check_deps $CONFIG_LIST       \
7085            $CONFIG_EXTRA      \
7086            $HAVE_LIST         \
7087            $ALL_COMPONENTS    \
7088
7089 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"
7090 enabled avresample && warn "Building with deprecated library libavresample"
7091
7092 case $target_os in
7093 haiku)
7094     disable memalign
7095     disable posix_memalign
7096     ;;
7097 *-dos|freedos|opendos)
7098     if test_cpp_condition sys/version.h "defined(__DJGPP__) && __DJGPP__ == 2 && __DJGPP_MINOR__ == 5"; then
7099         disable memalign
7100     fi
7101     ;;
7102 esac
7103
7104 flatten_extralibs(){
7105     nested_entries=
7106     list_name=$1
7107     eval list=\$${1}
7108     for entry in $list; do
7109         entry_copy=$entry
7110         resolve entry_copy
7111         flat_entries=
7112         for e in $entry_copy; do
7113             case $e in
7114                 *_extralibs) nested_entries="$nested_entries$e ";;
7115                           *) flat_entries="$flat_entries$e ";;
7116             esac
7117         done
7118         eval $entry="\$flat_entries"
7119     done
7120     append $list_name "$nested_entries"
7121
7122     resolve nested_entries
7123     if test -n "$(filter '*_extralibs' $nested_entries)"; then
7124         flatten_extralibs $list_name
7125     fi
7126 }
7127
7128 flatten_extralibs_wrapper(){
7129     list_name=$1
7130     flatten_extralibs $list_name
7131     unique $list_name
7132     resolve $list_name
7133     eval $list_name=\$\(\$ldflags_filter \$$list_name\)
7134     eval printf \''%s'\' \""\$$list_name"\"
7135 }
7136
7137 for linkunit in $LIBRARY_LIST; do
7138     unset current_extralibs
7139     eval components=\$$(toupper ${linkunit})_COMPONENTS_LIST
7140     for comp in ${components}; do
7141         enabled $comp || continue
7142         comp_extralibs="${comp}_extralibs"
7143         append current_extralibs $comp_extralibs
7144     done
7145     eval prepend ${linkunit}_extralibs $current_extralibs
7146 done
7147
7148 for linkunit in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
7149     eval ${linkunit}_extralibs=\$\(flatten_extralibs_wrapper ${linkunit}_extralibs\)
7150 done
7151
7152 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
7153
7154 for thread in $THREADS_LIST; do
7155     if enabled $thread; then
7156         test -n "$thread_type" &&
7157             die "ERROR: Only one thread type must be selected." ||
7158             thread_type="$thread"
7159     fi
7160 done
7161
7162 if disabled stdatomic; then
7163     if enabled atomics_gcc; then
7164         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
7165     elif enabled atomics_win32; then
7166         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
7167     elif enabled atomics_suncc; then
7168         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
7169     elif enabled pthreads; then
7170         add_compat atomics/pthread/stdatomic.o
7171         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
7172     else
7173         enabled threads && die "Threading is enabled, but no atomics are available"
7174         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
7175     fi
7176 fi
7177
7178 # Check if requested libraries were found.
7179 for lib in $AUTODETECT_LIBS; do
7180     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
7181 done
7182
7183 enabled zlib && add_cppflags -DZLIB_CONST
7184
7185 # conditional library dependencies, in any order
7186 enabled afftdn_filter       && prepend avfilter_deps "avcodec"
7187 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
7188 enabled afir_filter         && prepend avfilter_deps "avcodec"
7189 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
7190 enabled aresample_filter    && prepend avfilter_deps "swresample"
7191 enabled atempo_filter       && prepend avfilter_deps "avcodec"
7192 enabled bm3d_filter         && prepend avfilter_deps "avcodec"
7193 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
7194 enabled convolve_filter     && prepend avfilter_deps "avcodec"
7195 enabled deconvolve_filter   && prepend avfilter_deps "avcodec"
7196 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
7197 enabled elbg_filter         && prepend avfilter_deps "avcodec"
7198 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
7199 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
7200 enabled firequalizer_filter && prepend avfilter_deps "avcodec"
7201 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
7202 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
7203 enabled pan_filter          && prepend avfilter_deps "swresample"
7204 enabled pp_filter           && prepend avfilter_deps "postproc"
7205 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
7206 enabled resample_filter && prepend avfilter_deps "avresample"
7207 enabled sab_filter          && prepend avfilter_deps "swscale"
7208 enabled scale_filter    && prepend avfilter_deps "swscale"
7209 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
7210 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
7211 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
7212 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
7213 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
7214 enabled signature_filter    && prepend avfilter_deps "avcodec avformat"
7215 enabled smartblur_filter    && prepend avfilter_deps "swscale"
7216 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
7217 enabled spp_filter          && prepend avfilter_deps "avcodec"
7218 enabled sr_filter           && prepend avfilter_deps "avformat swscale"
7219 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
7220 enabled uspp_filter         && prepend avfilter_deps "avcodec"
7221 enabled zoompan_filter      && prepend avfilter_deps "swscale"
7222
7223 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
7224
7225 #FIXME
7226 enabled_any sdl2_outdev opengl_outdev && enabled sdl2 &&
7227     add_cflags $(filter_out '-Dmain=SDL_main' $sdl2_cflags)
7228
7229 enabled opus_decoder    && prepend avcodec_deps "swresample"
7230
7231 # reorder the items at var $1 to align with the items order at var $2 .
7232 # die if an item at $1 is not at $2 .
7233 reorder_by(){
7234     eval rb_in=\$$1
7235     eval rb_ordered=\$$2
7236
7237     for rb in $rb_in; do
7238         is_in $rb $rb_ordered || die "$rb at \$$1 is not at \$$2"
7239     done
7240
7241     rb_out=
7242     for rb in $rb_ordered; do
7243         is_in $rb $rb_in && rb_out="$rb_out$rb "
7244     done
7245     eval $1=\$rb_out
7246 }
7247
7248 # deps-expand fflib $1:  N x {append all expanded deps; unique}
7249 # within a set of N items, N expansions are enough to expose a cycle.
7250 expand_deps(){
7251     unique ${1}_deps  # required for the early break test.
7252     for dummy in $LIBRARY_LIST; do  # N iteratios
7253         eval deps=\$${1}_deps
7254         append ${1}_deps $(map 'eval echo \$${v}_deps' $deps)
7255         unique ${1}_deps
7256         eval '[ ${#deps} = ${#'${1}_deps'} ]' && break  # doesn't expand anymore
7257     done
7258
7259     eval is_in $1 \$${1}_deps && die "Dependency cycle at ${1}_deps"
7260     reorder_by ${1}_deps LIBRARY_LIST  # linking order is expected later
7261 }
7262
7263 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
7264 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
7265
7266 map 'expand_deps $v' $LIBRARY_LIST
7267
7268 if test "$quiet" != "yes"; then
7269
7270 echo "install prefix            $prefix"
7271 echo "source path               $source_path"
7272 echo "C compiler                $cc"
7273 echo "C library                 $libc_type"
7274 if test "$host_cc" != "$cc"; then
7275     echo "host C compiler           $host_cc"
7276     echo "host C library            $host_libc_type"
7277 fi
7278 echo "ARCH                      $arch ($cpu)"
7279 if test "$build_suffix" != ""; then
7280     echo "build suffix              $build_suffix"
7281 fi
7282 if test "$progs_suffix" != ""; then
7283     echo "progs suffix              $progs_suffix"
7284 fi
7285 if test "$extra_version" != ""; then
7286     echo "version string suffix     $extra_version"
7287 fi
7288 echo "big-endian                ${bigendian-no}"
7289 echo "runtime cpu detection     ${runtime_cpudetect-no}"
7290 if enabled x86; then
7291     echo "standalone assembly       ${x86asm-no}"
7292     echo "x86 assembler             ${x86asmexe}"
7293     echo "MMX enabled               ${mmx-no}"
7294     echo "MMXEXT enabled            ${mmxext-no}"
7295     echo "3DNow! enabled            ${amd3dnow-no}"
7296     echo "3DNow! extended enabled   ${amd3dnowext-no}"
7297     echo "SSE enabled               ${sse-no}"
7298     echo "SSSE3 enabled             ${ssse3-no}"
7299     echo "AESNI enabled             ${aesni-no}"
7300     echo "AVX enabled               ${avx-no}"
7301     echo "AVX2 enabled              ${avx2-no}"
7302     echo "AVX-512 enabled           ${avx512-no}"
7303     echo "XOP enabled               ${xop-no}"
7304     echo "FMA3 enabled              ${fma3-no}"
7305     echo "FMA4 enabled              ${fma4-no}"
7306     echo "i686 features enabled     ${i686-no}"
7307     echo "CMOV is fast              ${fast_cmov-no}"
7308     echo "EBX available             ${ebx_available-no}"
7309     echo "EBP available             ${ebp_available-no}"
7310 fi
7311 if enabled aarch64; then
7312     echo "NEON enabled              ${neon-no}"
7313     echo "VFP enabled               ${vfp-no}"
7314 fi
7315 if enabled arm; then
7316     echo "ARMv5TE enabled           ${armv5te-no}"
7317     echo "ARMv6 enabled             ${armv6-no}"
7318     echo "ARMv6T2 enabled           ${armv6t2-no}"
7319     echo "VFP enabled               ${vfp-no}"
7320     echo "NEON enabled              ${neon-no}"
7321     echo "THUMB enabled             ${thumb-no}"
7322 fi
7323 if enabled mips; then
7324     echo "MIPS FPU enabled          ${mipsfpu-no}"
7325     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
7326     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
7327     echo "MIPS MSA enabled          ${msa-no}"
7328     echo "MIPS MSA2 enabled         ${msa2-no}"
7329     echo "LOONGSON MMI enabled      ${mmi-no}"
7330 fi
7331 if enabled ppc; then
7332     echo "AltiVec enabled           ${altivec-no}"
7333     echo "VSX enabled               ${vsx-no}"
7334     echo "POWER8 enabled            ${power8-no}"
7335     echo "PPC 4xx optimizations     ${ppc4xx-no}"
7336     echo "dcbzl available           ${dcbzl-no}"
7337 fi
7338 echo "debug symbols             ${debug-no}"
7339 echo "strip symbols             ${stripping-no}"
7340 echo "optimize for size         ${small-no}"
7341 echo "optimizations             ${optimizations-no}"
7342 echo "static                    ${static-no}"
7343 echo "shared                    ${shared-no}"
7344 echo "postprocessing support    ${postproc-no}"
7345 echo "network support           ${network-no}"
7346 echo "threading support         ${thread_type-no}"
7347 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
7348 echo "texi2html enabled         ${texi2html-no}"
7349 echo "perl enabled              ${perl-no}"
7350 echo "pod2man enabled           ${pod2man-no}"
7351 echo "makeinfo enabled          ${makeinfo-no}"
7352 echo "makeinfo supports HTML    ${makeinfo_html-no}"
7353 test -n "$random_seed" &&
7354     echo "random seed               ${random_seed}"
7355 echo
7356
7357 echo "External libraries:"
7358 print_enabled '' $EXTERNAL_LIBRARY_LIST $EXTERNAL_AUTODETECT_LIBRARY_LIST | print_in_columns
7359 echo
7360
7361 echo "External libraries providing hardware acceleration:"
7362 print_enabled '' $HWACCEL_LIBRARY_LIST $HWACCEL_AUTODETECT_LIBRARY_LIST | print_in_columns
7363 echo
7364
7365 echo "Libraries:"
7366 print_enabled '' $LIBRARY_LIST | print_in_columns
7367 echo
7368
7369 echo "Programs:"
7370 print_enabled '' $PROGRAM_LIST | print_in_columns
7371 echo
7372
7373 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
7374     echo "Enabled ${type}s:"
7375     eval list=\$$(toupper $type)_LIST
7376     print_enabled '_*' $list | print_in_columns
7377     echo
7378 done
7379
7380 if test -n "$ignore_tests"; then
7381     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
7382     echo "Ignored FATE tests:"
7383     echo $ignore_tests | print_in_columns
7384     echo
7385 fi
7386
7387 echo "License: $license"
7388
7389 fi # test "$quiet" != "yes"
7390
7391 if test -n "$WARN_IF_GETS_DISABLED_LIST"; then
7392     for cfg in $WARN_IF_GETS_DISABLED_LIST; do
7393         if disabled $cfg; then
7394             varname=${cfg}_disable_reason
7395             eval "warn \"Disabled $cfg because \$$varname\""
7396         fi
7397     done
7398 fi
7399
7400 if test -n "$WARNINGS"; then
7401     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
7402     enabled fatal_warnings && exit 1
7403 fi
7404
7405 test -e Makefile || echo "include $source_path/Makefile" > Makefile
7406
7407 esc(){
7408     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
7409 }
7410
7411 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" > ffbuild/config.fate
7412
7413 enabled stripping || strip="echo skipping strip"
7414 enabled stripping || striptype=""
7415
7416 config_files="$TMPH ffbuild/config.mak doc/config.texi"
7417
7418 cat > ffbuild/config.mak <<EOF
7419 # Automatically generated by configure - do not modify!
7420 ifndef FFMPEG_CONFIG_MAK
7421 FFMPEG_CONFIG_MAK=1
7422 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
7423 prefix=$prefix
7424 LIBDIR=\$(DESTDIR)$libdir
7425 SHLIBDIR=\$(DESTDIR)$shlibdir
7426 INCDIR=\$(DESTDIR)$incdir
7427 BINDIR=\$(DESTDIR)$bindir
7428 DATADIR=\$(DESTDIR)$datadir
7429 DOCDIR=\$(DESTDIR)$docdir
7430 MANDIR=\$(DESTDIR)$mandir
7431 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
7432 INSTALL_NAME_DIR=$install_name_dir
7433 SRC_PATH=$source_path
7434 SRC_LINK=$source_link
7435 ifndef MAIN_MAKEFILE
7436 SRC_PATH:=\$(SRC_PATH:.%=..%)
7437 endif
7438 CC_IDENT=$cc_ident
7439 ARCH=$arch
7440 INTRINSICS=$intrinsics
7441 EXTERN_PREFIX=$extern_prefix
7442 CC=$cc
7443 CXX=$cxx
7444 AS=$as
7445 OBJCC=$objcc
7446 LD=$ld
7447 DEPCC=$dep_cc
7448 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
7449 DEPAS=$as
7450 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
7451 X86ASM=$x86asmexe
7452 DEPX86ASM=$x86asmexe
7453 DEPX86ASMFLAGS=\$(X86ASMFLAGS)
7454 AR=$ar
7455 ARFLAGS=$arflags
7456 AR_O=$ar_o
7457 AR_CMD=$ar
7458 NM_CMD=$nm
7459 RANLIB=$ranlib
7460 STRIP=$strip
7461 STRIPTYPE=$striptype
7462 NVCC=$nvcc
7463 CP=cp -p
7464 LN_S=$ln_s
7465 CPPFLAGS=$CPPFLAGS
7466 CFLAGS=$CFLAGS
7467 CXXFLAGS=$CXXFLAGS
7468 OBJCFLAGS=$OBJCFLAGS
7469 ASFLAGS=$ASFLAGS
7470 NVCCFLAGS=$nvccflags
7471 AS_C=$AS_C
7472 AS_O=$AS_O
7473 OBJCC_C=$OBJCC_C
7474 OBJCC_E=$OBJCC_E
7475 OBJCC_O=$OBJCC_O
7476 CC_C=$CC_C
7477 CC_E=$CC_E
7478 CC_O=$CC_O
7479 CXX_C=$CXX_C
7480 CXX_O=$CXX_O
7481 NVCC_C=$NVCC_C
7482 NVCC_O=$NVCC_O
7483 LD_O=$LD_O
7484 X86ASM_O=$X86ASM_O
7485 LD_LIB=$LD_LIB
7486 LD_PATH=$LD_PATH
7487 DLLTOOL=$dlltool
7488 WINDRES=$windres
7489 DEPWINDRES=$dep_cc
7490 DOXYGEN=$doxygen
7491 LDFLAGS=$LDFLAGS
7492 LDEXEFLAGS=$LDEXEFLAGS
7493 LDSOFLAGS=$LDSOFLAGS
7494 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
7495 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
7496 X86ASMFLAGS=$X86ASMFLAGS
7497 MSAFLAGS=$MSAFLAGS
7498 MMIFLAGS=$MMIFLAGS
7499 BUILDSUF=$build_suffix
7500 PROGSSUF=$progs_suffix
7501 FULLNAME=$FULLNAME
7502 LIBPREF=$LIBPREF
7503 LIBSUF=$LIBSUF
7504 LIBNAME=$LIBNAME
7505 SLIBPREF=$SLIBPREF
7506 SLIBSUF=$SLIBSUF
7507 EXESUF=$EXESUF
7508 EXTRA_VERSION=$extra_version
7509 CCDEP=$CCDEP
7510 CXXDEP=$CXXDEP
7511 CCDEP_FLAGS=$CCDEP_FLAGS
7512 ASDEP=$ASDEP
7513 ASDEP_FLAGS=$ASDEP_FLAGS
7514 X86ASMDEP=$X86ASMDEP
7515 X86ASMDEP_FLAGS=$X86ASMDEP_FLAGS
7516 CC_DEPFLAGS=$CC_DEPFLAGS
7517 AS_DEPFLAGS=$AS_DEPFLAGS
7518 X86ASM_DEPFLAGS=$X86ASM_DEPFLAGS
7519 HOSTCC=$host_cc
7520 HOSTLD=$host_ld
7521 HOSTCFLAGS=$host_cflags
7522 HOSTCPPFLAGS=$host_cppflags
7523 HOSTEXESUF=$HOSTEXESUF
7524 HOSTLDFLAGS=$host_ldflags
7525 HOSTEXTRALIBS=$host_extralibs
7526 DEPHOSTCC=$host_cc
7527 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
7528 HOSTCCDEP=$HOSTCCDEP
7529 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
7530 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
7531 HOSTCC_C=$HOSTCC_C
7532 HOSTCC_O=$HOSTCC_O
7533 HOSTLD_O=$HOSTLD_O
7534 TARGET_EXEC=$target_exec $target_exec_args
7535 TARGET_PATH=$target_path
7536 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
7537 CFLAGS-ffplay=${sdl2_cflags}
7538 CFLAGS_HEADERS=$CFLAGS_HEADERS
7539 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
7540 EXTRALIBS=$extralibs
7541 COMPAT_OBJS=$compat_objs
7542 INSTALL=$install
7543 LIBTARGET=${LIBTARGET}
7544 SLIBNAME=${SLIBNAME}
7545 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
7546 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
7547 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
7548 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
7549 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
7550 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
7551 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
7552 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
7553 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
7554 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
7555 NOREDZONE_FLAGS=$noredzone_flags
7556 LIBFUZZER_PATH=$libfuzzer_path
7557 IGNORE_TESTS=$ignore_tests
7558 EOF
7559
7560 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> ffbuild/config.mak' $LIBRARY_LIST
7561
7562 for entry in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
7563     eval echo "EXTRALIBS-${entry}=\$${entry}_extralibs" >> ffbuild/config.mak
7564 done
7565
7566 cat > $TMPH <<EOF
7567 /* Automatically generated by configure - do not modify! */
7568 #ifndef FFMPEG_CONFIG_H
7569 #define FFMPEG_CONFIG_H
7570 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
7571 #define FFMPEG_LICENSE "$(c_escape $license)"
7572 #define CONFIG_THIS_YEAR 2020
7573 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
7574 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
7575 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
7576 #define av_restrict $restrict_keyword
7577 #define EXTERN_PREFIX "${extern_prefix}"
7578 #define EXTERN_ASM ${extern_prefix}
7579 #define BUILDSUF "$build_suffix"
7580 #define SLIBSUF "$SLIBSUF"
7581 #define HAVE_MMX2 HAVE_MMXEXT
7582 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
7583 EOF
7584
7585 test -n "$assert_level" &&
7586     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
7587
7588 test -n "$malloc_prefix" &&
7589     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
7590
7591 if enabled x86asm; then
7592     append config_files $TMPASM
7593     cat > $TMPASM <<EOF
7594 ; Automatically generated by configure - do not modify!
7595 EOF
7596 fi
7597
7598 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
7599
7600
7601 mkdir -p doc
7602 mkdir -p tests
7603 mkdir -p tests/api
7604 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
7605
7606 print_config ARCH_   "$config_files" $ARCH_LIST
7607 print_config HAVE_   "$config_files" $HAVE_LIST
7608 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
7609                                      $CONFIG_EXTRA      \
7610                                      $ALL_COMPONENTS    \
7611
7612 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
7613 echo "endif # FFMPEG_CONFIG_MAK" >> ffbuild/config.mak
7614
7615 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
7616 cp_if_changed $TMPH config.h
7617 touch ffbuild/.config
7618
7619 enabled x86asm && cp_if_changed $TMPASM config.asm
7620
7621 cat > $TMPH <<EOF
7622 /* Generated by ffmpeg configure */
7623 #ifndef AVUTIL_AVCONFIG_H
7624 #define AVUTIL_AVCONFIG_H
7625 EOF
7626
7627 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
7628
7629 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
7630
7631 cp_if_changed $TMPH libavutil/avconfig.h
7632
7633 # full_filter_name_foo=vf_foo
7634 # full_filter_name_bar=asrc_bar
7635 # ...
7636 eval "$(sed -n "s/^extern AVFilter ff_\([avfsinkrc]\{2,5\}\)_\(.*\);/full_filter_name_\2=\1_\2/p" $source_path/libavfilter/allfilters.c)"
7637
7638 # generate the lists of enabled components
7639 print_enabled_components(){
7640     file=$1
7641     struct_name=$2
7642     name=$3
7643     shift 3
7644     echo "static const $struct_name * const $name[] = {" > $TMPH
7645     for c in $*; do
7646         if enabled $c; then
7647             case $name in
7648                 filter_list)
7649                     eval c=\$full_filter_name_${c%_filter}
7650                 ;;
7651                 indev_list)
7652                     c=${c%_indev}_demuxer
7653                 ;;
7654                 outdev_list)
7655                     c=${c%_outdev}_muxer
7656                 ;;
7657             esac
7658             printf "    &ff_%s,\n" $c >> $TMPH
7659         fi
7660     done
7661     if [ "$name" = "filter_list" ]; then
7662         for c in asrc_abuffer vsrc_buffer asink_abuffer vsink_buffer; do
7663             printf "    &ff_%s,\n" $c >> $TMPH
7664         done
7665     fi
7666     echo "    NULL };" >> $TMPH
7667     cp_if_changed $TMPH $file
7668 }
7669
7670 print_enabled_components libavfilter/filter_list.c AVFilter filter_list $FILTER_LIST
7671 print_enabled_components libavcodec/codec_list.c AVCodec codec_list $CODEC_LIST
7672 print_enabled_components libavcodec/parser_list.c AVCodecParser parser_list $PARSER_LIST
7673 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
7674 print_enabled_components libavformat/demuxer_list.c AVInputFormat demuxer_list $DEMUXER_LIST
7675 print_enabled_components libavformat/muxer_list.c AVOutputFormat muxer_list $MUXER_LIST
7676 print_enabled_components libavdevice/indev_list.c AVInputFormat indev_list $INDEV_LIST
7677 print_enabled_components libavdevice/outdev_list.c AVOutputFormat outdev_list $OUTDEV_LIST
7678 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
7679
7680 # Settings for pkg-config files
7681
7682 cat > $TMPH <<EOF
7683 # Automatically generated by configure - do not modify!
7684 shared=$shared
7685 build_suffix=$build_suffix
7686 prefix=$prefix
7687 libdir=$libdir
7688 incdir=$incdir
7689 rpath=$(enabled rpath && echo "-Wl,-rpath,\${libdir}")
7690 source_path=${source_path}
7691 LIBPREF=${LIBPREF}
7692 LIBSUF=${LIBSUF}
7693 extralibs_avutil="$avutil_extralibs"
7694 extralibs_avcodec="$avcodec_extralibs"
7695 extralibs_avformat="$avformat_extralibs"
7696 extralibs_avdevice="$avdevice_extralibs"
7697 extralibs_avfilter="$avfilter_extralibs"
7698 extralibs_avresample="$avresample_extralibs"
7699 extralibs_postproc="$postproc_extralibs"
7700 extralibs_swscale="$swscale_extralibs"
7701 extralibs_swresample="$swresample_extralibs"
7702 EOF
7703
7704 for lib in $LIBRARY_LIST; do
7705     lib_deps="$(eval echo \$${lib}_deps)"
7706     echo ${lib}_deps=\"$lib_deps\" >> $TMPH
7707 done
7708
7709 cp_if_changed $TMPH ffbuild/config.sh