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_dma_buf_h
2129     linux_perf_event_h
2130     machine_ioctl_bt848_h
2131     machine_ioctl_meteor_h
2132     malloc_h
2133     opencv2_core_core_c_h
2134     OpenGL_gl3_h
2135     poll_h
2136     sys_param_h
2137     sys_resource_h
2138     sys_select_h
2139     sys_soundcard_h
2140     sys_time_h
2141     sys_un_h
2142     sys_videoio_h
2143     termios_h
2144     udplite_h
2145     unistd_h
2146     valgrind_valgrind_h
2147     windows_h
2148     winsock2_h
2149 "
2150
2151 INTRINSICS_LIST="
2152     intrinsics_neon
2153 "
2154
2155 COMPLEX_FUNCS="
2156     cabs
2157     cexp
2158 "
2159
2160 MATH_FUNCS="
2161     atanf
2162     atan2f
2163     cbrt
2164     cbrtf
2165     copysign
2166     cosf
2167     erf
2168     exp2
2169     exp2f
2170     expf
2171     hypot
2172     isfinite
2173     isinf
2174     isnan
2175     ldexpf
2176     llrint
2177     llrintf
2178     log2
2179     log2f
2180     log10f
2181     lrint
2182     lrintf
2183     powf
2184     rint
2185     round
2186     roundf
2187     sinf
2188     trunc
2189     truncf
2190 "
2191
2192 SYSTEM_FEATURES="
2193     dos_paths
2194     libc_msvcrt
2195     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2196     section_data_rel_ro
2197     threads
2198     uwp
2199     winrt
2200 "
2201
2202 SYSTEM_FUNCS="
2203     access
2204     aligned_malloc
2205     arc4random
2206     clock_gettime
2207     closesocket
2208     CommandLineToArgvW
2209     fcntl
2210     getaddrinfo
2211     gethrtime
2212     getopt
2213     GetModuleHandle
2214     GetProcessAffinityMask
2215     GetProcessMemoryInfo
2216     GetProcessTimes
2217     getrusage
2218     GetStdHandle
2219     GetSystemTimeAsFileTime
2220     gettimeofday
2221     glob
2222     glXGetProcAddress
2223     gmtime_r
2224     inet_aton
2225     isatty
2226     kbhit
2227     localtime_r
2228     lstat
2229     lzo1x_999_compress
2230     mach_absolute_time
2231     MapViewOfFile
2232     memalign
2233     mkstemp
2234     mmap
2235     mprotect
2236     nanosleep
2237     PeekNamedPipe
2238     posix_memalign
2239     pthread_cancel
2240     sched_getaffinity
2241     SecItemImport
2242     SetConsoleTextAttribute
2243     SetConsoleCtrlHandler
2244     SetDllDirectory
2245     setmode
2246     setrlimit
2247     Sleep
2248     strerror_r
2249     sysconf
2250     sysctl
2251     usleep
2252     UTGetOSTypeFromString
2253     VirtualAlloc
2254     wglGetProcAddress
2255 "
2256
2257 SYSTEM_LIBRARIES="
2258     bcrypt
2259     vaapi_drm
2260     vaapi_x11
2261     vdpau_x11
2262 "
2263
2264 TOOLCHAIN_FEATURES="
2265     as_arch_directive
2266     as_dn_directive
2267     as_fpu_directive
2268     as_func
2269     as_object_arch
2270     asm_mod_q
2271     blocks_extension
2272     ebp_available
2273     ebx_available
2274     gnu_as
2275     gnu_windres
2276     ibm_asm
2277     inline_asm_direct_symbol_refs
2278     inline_asm_labels
2279     inline_asm_nonlocal_labels
2280     pragma_deprecated
2281     rsync_contimeout
2282     symver_asm_label
2283     symver_gnu_asm
2284     vfp_args
2285     xform_asm
2286     xmm_clobbers
2287 "
2288
2289 TYPES_LIST="
2290     kCMVideoCodecType_HEVC
2291     kCVPixelFormatType_420YpCbCr10BiPlanarVideoRange
2292     kCVImageBufferTransferFunction_SMPTE_ST_2084_PQ
2293     kCVImageBufferTransferFunction_ITU_R_2100_HLG
2294     kCVImageBufferTransferFunction_Linear
2295     socklen_t
2296     struct_addrinfo
2297     struct_group_source_req
2298     struct_ip_mreq_source
2299     struct_ipv6_mreq
2300     struct_msghdr_msg_flags
2301     struct_pollfd
2302     struct_rusage_ru_maxrss
2303     struct_sctp_event_subscribe
2304     struct_sockaddr_in6
2305     struct_sockaddr_sa_len
2306     struct_sockaddr_storage
2307     struct_stat_st_mtim_tv_nsec
2308     struct_v4l2_frmivalenum_discrete
2309 "
2310
2311 HAVE_LIST="
2312     $ARCH_EXT_LIST
2313     $(add_suffix _external $ARCH_EXT_LIST)
2314     $(add_suffix _inline   $ARCH_EXT_LIST)
2315     $ARCH_FEATURES
2316     $BUILTIN_LIST
2317     $COMPLEX_FUNCS
2318     $HAVE_LIST_CMDLINE
2319     $HAVE_LIST_PUB
2320     $HEADERS_LIST
2321     $INTRINSICS_LIST
2322     $MATH_FUNCS
2323     $SYSTEM_FEATURES
2324     $SYSTEM_FUNCS
2325     $SYSTEM_LIBRARIES
2326     $THREADS_LIST
2327     $TOOLCHAIN_FEATURES
2328     $TYPES_LIST
2329     libdrm_getfb2
2330     makeinfo
2331     makeinfo_html
2332     opencl_d3d11
2333     opencl_drm_arm
2334     opencl_drm_beignet
2335     opencl_dxva2
2336     opencl_vaapi_beignet
2337     opencl_vaapi_intel_media
2338     perl
2339     pod2man
2340     texi2html
2341 "
2342
2343 # options emitted with CONFIG_ prefix but not available on the command line
2344 CONFIG_EXTRA="
2345     aandcttables
2346     ac3dsp
2347     adts_header
2348     atsc_a53
2349     audio_frame_queue
2350     audiodsp
2351     blockdsp
2352     bswapdsp
2353     cabac
2354     cbs
2355     cbs_av1
2356     cbs_h264
2357     cbs_h265
2358     cbs_jpeg
2359     cbs_mpeg2
2360     cbs_vp9
2361     dirac_parse
2362     dnn
2363     dvprofile
2364     exif
2365     faandct
2366     faanidct
2367     fdctdsp
2368     flacdsp
2369     fmtconvert
2370     frame_thread_encoder
2371     g722dsp
2372     golomb
2373     gplv3
2374     h263dsp
2375     h264chroma
2376     h264dsp
2377     h264parse
2378     h264pred
2379     h264qpel
2380     hevcparse
2381     hpeldsp
2382     huffman
2383     huffyuvdsp
2384     huffyuvencdsp
2385     idctdsp
2386     iirfilter
2387     mdct15
2388     intrax8
2389     iso_media
2390     ividsp
2391     jpegtables
2392     lgplv3
2393     libx262
2394     llauddsp
2395     llviddsp
2396     llvidencdsp
2397     lpc
2398     lzf
2399     me_cmp
2400     mpeg_er
2401     mpegaudio
2402     mpegaudiodsp
2403     mpegaudioheader
2404     mpegvideo
2405     mpegvideoenc
2406     mss34dsp
2407     pixblockdsp
2408     qpeldsp
2409     qsv
2410     qsvdec
2411     qsvenc
2412     qsvvpp
2413     rangecoder
2414     riffdec
2415     riffenc
2416     rtpdec
2417     rtpenc_chain
2418     rv34dsp
2419     scene_sad
2420     sinewin
2421     snappy
2422     srtp
2423     startcode
2424     texturedsp
2425     texturedspenc
2426     tpeldsp
2427     vaapi_1
2428     vaapi_encode
2429     vc1dsp
2430     videodsp
2431     vp3dsp
2432     vp56dsp
2433     vp8dsp
2434     wma_freqs
2435     wmv2dsp
2436 "
2437
2438 CMDLINE_SELECT="
2439     $ARCH_EXT_LIST
2440     $CONFIG_LIST
2441     $HAVE_LIST_CMDLINE
2442     $THREADS_LIST
2443     asm
2444     cross_compile
2445     debug
2446     extra_warnings
2447     logging
2448     lto
2449     optimizations
2450     rpath
2451     stripping
2452 "
2453
2454 PATHS_LIST="
2455     bindir
2456     datadir
2457     docdir
2458     incdir
2459     libdir
2460     mandir
2461     pkgconfigdir
2462     prefix
2463     shlibdir
2464     install_name_dir
2465 "
2466
2467 CMDLINE_SET="
2468     $PATHS_LIST
2469     ar
2470     arch
2471     as
2472     assert_level
2473     build_suffix
2474     cc
2475     objcc
2476     cpu
2477     cross_prefix
2478     custom_allocator
2479     cxx
2480     dep_cc
2481     doxygen
2482     env
2483     extra_version
2484     gas
2485     host_cc
2486     host_cflags
2487     host_extralibs
2488     host_ld
2489     host_ldflags
2490     host_os
2491     ignore_tests
2492     install
2493     ld
2494     ln_s
2495     logfile
2496     malloc_prefix
2497     nm
2498     optflags
2499     nvcc
2500     nvccflags
2501     pkg_config
2502     pkg_config_flags
2503     progs_suffix
2504     random_seed
2505     ranlib
2506     samples
2507     strip
2508     sws_max_filter_size
2509     sysinclude
2510     sysroot
2511     target_exec
2512     target_os
2513     target_path
2514     target_samples
2515     tempprefix
2516     toolchain
2517     valgrind
2518     windres
2519     x86asmexe
2520 "
2521
2522 CMDLINE_APPEND="
2523     extra_cflags
2524     extra_cxxflags
2525     extra_objcflags
2526     host_cppflags
2527 "
2528
2529 # code dependency declarations
2530
2531 # architecture extensions
2532
2533 armv5te_deps="arm"
2534 armv6_deps="arm"
2535 armv6t2_deps="arm"
2536 armv8_deps="aarch64"
2537 neon_deps_any="aarch64 arm"
2538 intrinsics_neon_deps="neon"
2539 vfp_deps_any="aarch64 arm"
2540 vfpv3_deps="vfp"
2541 setend_deps="arm"
2542
2543 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2544
2545 altivec_deps="ppc"
2546 dcbzl_deps="ppc"
2547 ldbrx_deps="ppc"
2548 ppc4xx_deps="ppc"
2549 vsx_deps="altivec"
2550 power8_deps="vsx"
2551
2552 loongson2_deps="mips"
2553 loongson3_deps="mips"
2554 mips32r2_deps="mips"
2555 mips32r5_deps="mips"
2556 mips32r6_deps="mips"
2557 mips64r2_deps="mips"
2558 mips64r6_deps="mips"
2559 mipsfpu_deps="mips"
2560 mipsdsp_deps="mips"
2561 mipsdspr2_deps="mips"
2562 mmi_deps_any="loongson2 loongson3"
2563 msa_deps="mipsfpu"
2564 msa2_deps="msa"
2565
2566 cpunop_deps="i686"
2567 x86_64_select="i686"
2568 x86_64_suggest="fast_cmov"
2569
2570 amd3dnow_deps="mmx"
2571 amd3dnowext_deps="amd3dnow"
2572 i686_deps="x86"
2573 mmx_deps="x86"
2574 mmxext_deps="mmx"
2575 sse_deps="mmxext"
2576 sse2_deps="sse"
2577 sse3_deps="sse2"
2578 ssse3_deps="sse3"
2579 sse4_deps="ssse3"
2580 sse42_deps="sse4"
2581 aesni_deps="sse42"
2582 avx_deps="sse42"
2583 xop_deps="avx"
2584 fma3_deps="avx"
2585 fma4_deps="avx"
2586 avx2_deps="avx"
2587 avx512_deps="avx2"
2588
2589 mmx_external_deps="x86asm"
2590 mmx_inline_deps="inline_asm x86"
2591 mmx_suggest="mmx_external mmx_inline"
2592
2593 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2594     eval dep=\$${ext}_deps
2595     eval ${ext}_external_deps='"${dep}_external"'
2596     eval ${ext}_inline_deps='"${dep}_inline"'
2597     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2598 done
2599
2600 aligned_stack_if_any="aarch64 ppc x86"
2601 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2602 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2603 fast_unaligned_if_any="aarch64 ppc x86"
2604 simd_align_16_if_any="altivec neon sse"
2605 simd_align_32_if_any="avx"
2606 simd_align_64_if_any="avx512"
2607
2608 # system capabilities
2609 linux_perf_deps="linux_perf_event_h"
2610 symver_if_any="symver_asm_label symver_gnu_asm"
2611 valgrind_backtrace_conflict="optimizations"
2612 valgrind_backtrace_deps="valgrind_valgrind_h"
2613
2614 # threading support
2615 atomics_gcc_if="sync_val_compare_and_swap"
2616 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2617 atomics_win32_if="MemoryBarrier"
2618 atomics_native_if_any="$ATOMICS_LIST"
2619 w32threads_deps="atomics_native"
2620 threads_if_any="$THREADS_LIST"
2621
2622 # subsystems
2623 cbs_av1_select="cbs"
2624 cbs_h264_select="cbs"
2625 cbs_h265_select="cbs"
2626 cbs_jpeg_select="cbs"
2627 cbs_mpeg2_select="cbs"
2628 cbs_vp9_select="cbs"
2629 dct_select="rdft"
2630 dirac_parse_select="golomb"
2631 dnn_suggest="libtensorflow libopenvino"
2632 dnn_deps="swscale"
2633 error_resilience_select="me_cmp"
2634 faandct_deps="faan"
2635 faandct_select="fdctdsp"
2636 faanidct_deps="faan"
2637 faanidct_select="idctdsp"
2638 h264dsp_select="startcode"
2639 hevcparse_select="atsc_a53 golomb"
2640 frame_thread_encoder_deps="encoders threads"
2641 intrax8_select="blockdsp idctdsp"
2642 mdct_select="fft"
2643 mdct15_select="fft"
2644 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2645 mpeg_er_select="error_resilience"
2646 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2647 mpegaudiodsp_select="dct"
2648 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2649 mpegvideoenc_select="aandcttables me_cmp mpegvideo pixblockdsp qpeldsp"
2650 vc1dsp_select="h264chroma qpeldsp startcode"
2651 rdft_select="fft"
2652
2653 # decoders / encoders
2654 aac_decoder_select="adts_header mdct15 mdct sinewin"
2655 aac_fixed_decoder_select="adts_header mdct"
2656 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2657 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2658 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2659 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2660 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2661 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2662 acelp_kelvin_decoder_select="audiodsp"
2663 adpcm_g722_decoder_select="g722dsp"
2664 adpcm_g722_encoder_select="g722dsp"
2665 aic_decoder_select="golomb idctdsp"
2666 alac_encoder_select="lpc"
2667 als_decoder_select="bswapdsp"
2668 amrnb_decoder_select="lsp"
2669 amrwb_decoder_select="lsp"
2670 amv_decoder_select="sp5x_decoder exif"
2671 amv_encoder_select="jpegtables mpegvideoenc"
2672 ape_decoder_select="bswapdsp llauddsp"
2673 apng_decoder_deps="zlib"
2674 apng_encoder_deps="zlib"
2675 apng_encoder_select="llvidencdsp"
2676 aptx_decoder_select="audio_frame_queue"
2677 aptx_encoder_select="audio_frame_queue"
2678 aptx_hd_decoder_select="audio_frame_queue"
2679 aptx_hd_encoder_select="audio_frame_queue"
2680 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2681 asv1_encoder_select="aandcttables bswapdsp fdctdsp pixblockdsp"
2682 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2683 asv2_encoder_select="aandcttables bswapdsp fdctdsp pixblockdsp"
2684 atrac1_decoder_select="mdct sinewin"
2685 atrac3_decoder_select="mdct"
2686 atrac3al_decoder_select="mdct"
2687 atrac3p_decoder_select="mdct sinewin"
2688 atrac3pal_decoder_select="mdct sinewin"
2689 atrac9_decoder_select="mdct"
2690 av1_decoder_select="cbs_av1"
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 exr_encoder_deps="zlib"
2719 ffv1_decoder_select="rangecoder"
2720 ffv1_encoder_select="rangecoder"
2721 ffvhuff_decoder_select="huffyuv_decoder"
2722 ffvhuff_encoder_select="huffyuv_encoder"
2723 fic_decoder_select="golomb"
2724 flac_decoder_select="flacdsp"
2725 flac_encoder_select="bswapdsp flacdsp lpc"
2726 flashsv2_decoder_deps="zlib"
2727 flashsv2_encoder_deps="zlib"
2728 flashsv_decoder_deps="zlib"
2729 flashsv_encoder_deps="zlib"
2730 flv_decoder_select="h263_decoder"
2731 flv_encoder_select="h263_encoder"
2732 fourxm_decoder_select="blockdsp bswapdsp"
2733 fraps_decoder_select="bswapdsp huffman"
2734 g2m_decoder_deps="zlib"
2735 g2m_decoder_select="blockdsp idctdsp jpegtables"
2736 g729_decoder_select="audiodsp"
2737 h261_decoder_select="mpegvideo"
2738 h261_encoder_select="mpegvideoenc"
2739 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2740 h263_encoder_select="h263dsp mpegvideoenc"
2741 h263i_decoder_select="h263_decoder"
2742 h263p_decoder_select="h263_decoder"
2743 h263p_encoder_select="h263_encoder"
2744 h264_decoder_select="atsc_a53 cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2745 h264_decoder_suggest="error_resilience"
2746 hap_decoder_select="snappy texturedsp"
2747 hap_encoder_deps="libsnappy"
2748 hap_encoder_select="texturedspenc"
2749 hevc_decoder_select="atsc_a53 bswapdsp cabac golomb hevcparse videodsp"
2750 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2751 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2752 hymt_decoder_select="huffyuv_decoder"
2753 iac_decoder_select="imc_decoder"
2754 imc_decoder_select="bswapdsp fft mdct sinewin"
2755 imm4_decoder_select="bswapdsp"
2756 imm5_decoder_select="h264_decoder hevc_decoder"
2757 indeo3_decoder_select="hpeldsp"
2758 indeo4_decoder_select="ividsp"
2759 indeo5_decoder_select="ividsp"
2760 interplay_video_decoder_select="hpeldsp"
2761 jpegls_decoder_select="mjpeg_decoder"
2762 jv_decoder_select="blockdsp"
2763 lagarith_decoder_select="llviddsp"
2764 ljpeg_encoder_select="idctdsp jpegtables"
2765 lscr_decoder_deps="zlib"
2766 magicyuv_decoder_select="llviddsp"
2767 magicyuv_encoder_select="llvidencdsp"
2768 mdec_decoder_select="blockdsp bswapdsp idctdsp mpegvideo"
2769 metasound_decoder_select="lsp mdct sinewin"
2770 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2771 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2772 mjpeg_encoder_select="jpegtables mpegvideoenc"
2773 mjpegb_decoder_select="mjpeg_decoder"
2774 mlp_decoder_select="mlp_parser"
2775 mlp_encoder_select="lpc audio_frame_queue"
2776 mobiclip_decoder_select="bswapdsp golomb"
2777 motionpixels_decoder_select="bswapdsp"
2778 mp1_decoder_select="mpegaudio"
2779 mp1float_decoder_select="mpegaudio"
2780 mp2_decoder_select="mpegaudio"
2781 mp2float_decoder_select="mpegaudio"
2782 mp3_decoder_select="mpegaudio"
2783 mp3adu_decoder_select="mpegaudio"
2784 mp3adufloat_decoder_select="mpegaudio"
2785 mp3float_decoder_select="mpegaudio"
2786 mp3on4_decoder_select="mpegaudio"
2787 mp3on4float_decoder_select="mpegaudio"
2788 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2789 mpc8_decoder_select="mpegaudiodsp"
2790 mpegvideo_decoder_select="mpegvideo"
2791 mpeg1video_decoder_select="mpegvideo"
2792 mpeg1video_encoder_select="mpegvideoenc h263dsp"
2793 mpeg2video_decoder_select="mpegvideo"
2794 mpeg2video_encoder_select="mpegvideoenc h263dsp"
2795 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2796 mpeg4_encoder_select="h263_encoder"
2797 msa1_decoder_select="mss34dsp"
2798 mscc_decoder_deps="zlib"
2799 msmpeg4v1_decoder_select="h263_decoder"
2800 msmpeg4v2_decoder_select="h263_decoder"
2801 msmpeg4v2_encoder_select="h263_encoder"
2802 msmpeg4v3_decoder_select="h263_decoder"
2803 msmpeg4v3_encoder_select="h263_encoder"
2804 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2805 mts2_decoder_select="jpegtables mss34dsp"
2806 mv30_decoder_select="aandcttables blockdsp"
2807 mvha_decoder_deps="zlib"
2808 mvha_decoder_select="llviddsp"
2809 mwsc_decoder_deps="zlib"
2810 mxpeg_decoder_select="mjpeg_decoder"
2811 nellymoser_decoder_select="mdct sinewin"
2812 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2813 notchlc_decoder_select="lzf"
2814 nuv_decoder_select="idctdsp lzo"
2815 on2avc_decoder_select="mdct"
2816 opus_decoder_deps="swresample"
2817 opus_decoder_select="mdct15"
2818 opus_encoder_select="audio_frame_queue mdct15"
2819 png_decoder_deps="zlib"
2820 png_encoder_deps="zlib"
2821 png_encoder_select="llvidencdsp"
2822 prores_decoder_select="blockdsp idctdsp"
2823 prores_encoder_select="fdctdsp"
2824 qcelp_decoder_select="lsp"
2825 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2826 ra_144_decoder_select="audiodsp"
2827 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2828 ralf_decoder_select="golomb"
2829 rasc_decoder_deps="zlib"
2830 rawvideo_decoder_select="bswapdsp"
2831 rscc_decoder_deps="zlib"
2832 rtjpeg_decoder_select="me_cmp"
2833 rv10_decoder_select="h263_decoder"
2834 rv10_encoder_select="h263_encoder"
2835 rv20_decoder_select="h263_decoder"
2836 rv20_encoder_select="h263_encoder"
2837 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2838 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2839 screenpresso_decoder_deps="zlib"
2840 shorten_decoder_select="bswapdsp"
2841 sipr_decoder_select="lsp"
2842 smvjpeg_decoder_select="mjpeg_decoder"
2843 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2844 snow_encoder_select="dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2845 sonic_decoder_select="golomb rangecoder"
2846 sonic_encoder_select="golomb rangecoder"
2847 sonic_ls_encoder_select="golomb rangecoder"
2848 sp5x_decoder_select="mjpeg_decoder"
2849 speedhq_decoder_select="mpegvideo"
2850 speedhq_encoder_select="mpegvideoenc"
2851 srgc_decoder_deps="zlib"
2852 svq1_decoder_select="hpeldsp"
2853 svq1_encoder_select="hpeldsp me_cmp mpegvideoenc"
2854 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2855 svq3_decoder_suggest="zlib"
2856 tak_decoder_select="audiodsp"
2857 tdsc_decoder_deps="zlib"
2858 tdsc_decoder_select="mjpeg_decoder"
2859 theora_decoder_select="vp3_decoder"
2860 thp_decoder_select="mjpeg_decoder"
2861 tiff_decoder_select="mjpeg_decoder"
2862 tiff_decoder_suggest="zlib lzma"
2863 tiff_encoder_suggest="zlib"
2864 truehd_decoder_select="mlp_parser"
2865 truehd_encoder_select="lpc audio_frame_queue"
2866 truemotion2_decoder_select="bswapdsp"
2867 truespeech_decoder_select="bswapdsp"
2868 tscc_decoder_deps="zlib"
2869 twinvq_decoder_select="mdct lsp sinewin"
2870 txd_decoder_select="texturedsp"
2871 utvideo_decoder_select="bswapdsp llviddsp"
2872 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2873 vble_decoder_select="llviddsp"
2874 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2875 vc1image_decoder_select="vc1_decoder"
2876 vorbis_decoder_select="mdct"
2877 vorbis_encoder_select="audio_frame_queue mdct"
2878 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2879 vp4_decoder_select="vp3_decoder"
2880 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2881 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2882 vp6a_decoder_select="vp6_decoder"
2883 vp6f_decoder_select="vp6_decoder"
2884 vp7_decoder_select="h264pred videodsp vp8dsp"
2885 vp8_decoder_select="h264pred videodsp vp8dsp"
2886 vp9_decoder_select="videodsp vp9_parser vp9_superframe_split_bsf"
2887 wcmv_decoder_deps="zlib"
2888 webp_decoder_select="vp8_decoder exif"
2889 wmalossless_decoder_select="llauddsp"
2890 wmapro_decoder_select="mdct sinewin wma_freqs"
2891 wmav1_decoder_select="mdct sinewin wma_freqs"
2892 wmav1_encoder_select="mdct sinewin wma_freqs"
2893 wmav2_decoder_select="mdct sinewin wma_freqs"
2894 wmav2_encoder_select="mdct sinewin wma_freqs"
2895 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2896 wmv1_decoder_select="h263_decoder"
2897 wmv1_encoder_select="h263_encoder"
2898 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2899 wmv2_encoder_select="h263_encoder wmv2dsp"
2900 wmv3_decoder_select="vc1_decoder"
2901 wmv3image_decoder_select="wmv3_decoder"
2902 xma1_decoder_select="wmapro_decoder"
2903 xma2_decoder_select="wmapro_decoder"
2904 ylc_decoder_select="bswapdsp"
2905 zerocodec_decoder_deps="zlib"
2906 zlib_decoder_deps="zlib"
2907 zlib_encoder_deps="zlib"
2908 zmbv_decoder_deps="zlib"
2909 zmbv_encoder_deps="zlib"
2910
2911 # hardware accelerators
2912 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2913 cuda_deps="ffnvcodec"
2914 cuvid_deps="ffnvcodec"
2915 d3d11va_deps="dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2916 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32 user32"
2917 ffnvcodec_deps_any="libdl LoadLibrary"
2918 nvdec_deps="ffnvcodec"
2919 vaapi_x11_deps="xlib"
2920 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2921 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2922 xvmc_deps="X11_extensions_XvMClib_h"
2923
2924 av1_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_AV1"
2925 av1_d3d11va_hwaccel_select="av1_decoder"
2926 av1_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_AV1"
2927 av1_d3d11va2_hwaccel_select="av1_decoder"
2928 av1_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_AV1"
2929 av1_dxva2_hwaccel_select="av1_decoder"
2930 av1_nvdec_hwaccel_deps="nvdec CUVIDAV1PICPARAMS"
2931 av1_nvdec_hwaccel_select="av1_decoder"
2932 av1_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferAV1_bit_depth_idx"
2933 av1_vaapi_hwaccel_select="av1_decoder"
2934 h263_vaapi_hwaccel_deps="vaapi"
2935 h263_vaapi_hwaccel_select="h263_decoder"
2936 h263_videotoolbox_hwaccel_deps="videotoolbox"
2937 h263_videotoolbox_hwaccel_select="h263_decoder"
2938 h264_d3d11va_hwaccel_deps="d3d11va"
2939 h264_d3d11va_hwaccel_select="h264_decoder"
2940 h264_d3d11va2_hwaccel_deps="d3d11va"
2941 h264_d3d11va2_hwaccel_select="h264_decoder"
2942 h264_dxva2_hwaccel_deps="dxva2"
2943 h264_dxva2_hwaccel_select="h264_decoder"
2944 h264_nvdec_hwaccel_deps="nvdec"
2945 h264_nvdec_hwaccel_select="h264_decoder"
2946 h264_vaapi_hwaccel_deps="vaapi"
2947 h264_vaapi_hwaccel_select="h264_decoder"
2948 h264_vdpau_hwaccel_deps="vdpau"
2949 h264_vdpau_hwaccel_select="h264_decoder"
2950 h264_videotoolbox_hwaccel_deps="videotoolbox"
2951 h264_videotoolbox_hwaccel_select="h264_decoder"
2952 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2953 hevc_d3d11va_hwaccel_select="hevc_decoder"
2954 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2955 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2956 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2957 hevc_dxva2_hwaccel_select="hevc_decoder"
2958 hevc_nvdec_hwaccel_deps="nvdec"
2959 hevc_nvdec_hwaccel_select="hevc_decoder"
2960 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2961 hevc_vaapi_hwaccel_select="hevc_decoder"
2962 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2963 hevc_vdpau_hwaccel_select="hevc_decoder"
2964 hevc_videotoolbox_hwaccel_deps="videotoolbox"
2965 hevc_videotoolbox_hwaccel_select="hevc_decoder"
2966 mjpeg_nvdec_hwaccel_deps="nvdec"
2967 mjpeg_nvdec_hwaccel_select="mjpeg_decoder"
2968 mjpeg_vaapi_hwaccel_deps="vaapi"
2969 mjpeg_vaapi_hwaccel_select="mjpeg_decoder"
2970 mpeg_xvmc_hwaccel_deps="xvmc"
2971 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2972 mpeg1_nvdec_hwaccel_deps="nvdec"
2973 mpeg1_nvdec_hwaccel_select="mpeg1video_decoder"
2974 mpeg1_vdpau_hwaccel_deps="vdpau"
2975 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2976 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2977 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2978 mpeg1_xvmc_hwaccel_deps="xvmc"
2979 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2980 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2981 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2982 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2983 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2984 mpeg2_dxva2_hwaccel_deps="dxva2"
2985 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2986 mpeg2_nvdec_hwaccel_deps="nvdec"
2987 mpeg2_nvdec_hwaccel_select="mpeg2video_decoder"
2988 mpeg2_vaapi_hwaccel_deps="vaapi"
2989 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2990 mpeg2_vdpau_hwaccel_deps="vdpau"
2991 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2992 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2993 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2994 mpeg2_xvmc_hwaccel_deps="xvmc"
2995 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2996 mpeg4_nvdec_hwaccel_deps="nvdec"
2997 mpeg4_nvdec_hwaccel_select="mpeg4_decoder"
2998 mpeg4_vaapi_hwaccel_deps="vaapi"
2999 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
3000 mpeg4_vdpau_hwaccel_deps="vdpau"
3001 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
3002 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
3003 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
3004 vc1_d3d11va_hwaccel_deps="d3d11va"
3005 vc1_d3d11va_hwaccel_select="vc1_decoder"
3006 vc1_d3d11va2_hwaccel_deps="d3d11va"
3007 vc1_d3d11va2_hwaccel_select="vc1_decoder"
3008 vc1_dxva2_hwaccel_deps="dxva2"
3009 vc1_dxva2_hwaccel_select="vc1_decoder"
3010 vc1_nvdec_hwaccel_deps="nvdec"
3011 vc1_nvdec_hwaccel_select="vc1_decoder"
3012 vc1_vaapi_hwaccel_deps="vaapi"
3013 vc1_vaapi_hwaccel_select="vc1_decoder"
3014 vc1_vdpau_hwaccel_deps="vdpau"
3015 vc1_vdpau_hwaccel_select="vc1_decoder"
3016 vp8_nvdec_hwaccel_deps="nvdec"
3017 vp8_nvdec_hwaccel_select="vp8_decoder"
3018 vp8_vaapi_hwaccel_deps="vaapi"
3019 vp8_vaapi_hwaccel_select="vp8_decoder"
3020 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
3021 vp9_d3d11va_hwaccel_select="vp9_decoder"
3022 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
3023 vp9_d3d11va2_hwaccel_select="vp9_decoder"
3024 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
3025 vp9_dxva2_hwaccel_select="vp9_decoder"
3026 vp9_nvdec_hwaccel_deps="nvdec"
3027 vp9_nvdec_hwaccel_select="vp9_decoder"
3028 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
3029 vp9_vaapi_hwaccel_select="vp9_decoder"
3030 vp9_vdpau_hwaccel_deps="vdpau VdpPictureInfoVP9"
3031 vp9_vdpau_hwaccel_select="vp9_decoder"
3032 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
3033 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
3034 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
3035 wmv3_nvdec_hwaccel_select="vc1_nvdec_hwaccel"
3036 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
3037 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
3038
3039 # hardware-accelerated codecs
3040 mediafoundation_deps="mftransform_h MFCreateAlignedMemoryBuffer"
3041 mediafoundation_extralibs="-lmfplat -lmfuuid -lole32 -lstrmiids"
3042 omx_deps="libdl pthreads"
3043 omx_rpi_select="omx"
3044 qsv_deps="libmfx"
3045 qsvdec_select="qsv"
3046 qsvenc_select="qsv"
3047 qsvvpp_select="qsv"
3048 vaapi_encode_deps="vaapi"
3049 v4l2_m2m_deps="linux_videodev2_h sem_timedwait"
3050
3051 hwupload_cuda_filter_deps="ffnvcodec"
3052 scale_npp_filter_deps="ffnvcodec libnpp"
3053 scale_cuda_filter_deps="ffnvcodec"
3054 scale_cuda_filter_deps_any="cuda_nvcc cuda_llvm"
3055 thumbnail_cuda_filter_deps="ffnvcodec"
3056 thumbnail_cuda_filter_deps_any="cuda_nvcc cuda_llvm"
3057 transpose_npp_filter_deps="ffnvcodec libnpp"
3058 overlay_cuda_filter_deps="ffnvcodec"
3059 overlay_cuda_filter_deps_any="cuda_nvcc cuda_llvm"
3060
3061 amf_deps_any="libdl LoadLibrary"
3062 nvenc_deps="ffnvcodec"
3063 nvenc_deps_any="libdl LoadLibrary"
3064 nvenc_encoder_deps="nvenc"
3065
3066 aac_mf_encoder_deps="mediafoundation"
3067 ac3_mf_encoder_deps="mediafoundation"
3068 av1_cuvid_decoder_deps="cuvid CUVIDAV1PICPARAMS"
3069 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
3070 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
3071 h264_amf_encoder_deps="amf"
3072 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
3073 h264_cuvid_decoder_deps="cuvid"
3074 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
3075 h264_mediacodec_decoder_deps="mediacodec"
3076 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
3077 h264_mf_encoder_deps="mediafoundation"
3078 h264_mmal_decoder_deps="mmal"
3079 h264_nvenc_encoder_deps="nvenc"
3080 h264_nvenc_encoder_select="atsc_a53"
3081 h264_omx_encoder_deps="omx"
3082 h264_qsv_decoder_select="h264_mp4toannexb_bsf qsvdec"
3083 h264_qsv_encoder_select="atsc_a53 qsvenc"
3084 h264_rkmpp_decoder_deps="rkmpp"
3085 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
3086 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
3087 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
3088 h264_v4l2m2m_decoder_select="h264_mp4toannexb_bsf"
3089 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
3090 hevc_amf_encoder_deps="amf"
3091 hevc_cuvid_decoder_deps="cuvid"
3092 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
3093 hevc_mediacodec_decoder_deps="mediacodec"
3094 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
3095 hevc_mf_encoder_deps="mediafoundation"
3096 hevc_nvenc_encoder_deps="nvenc"
3097 hevc_nvenc_encoder_select="atsc_a53"
3098 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf qsvdec"
3099 hevc_qsv_encoder_select="hevcparse qsvenc"
3100 hevc_rkmpp_decoder_deps="rkmpp"
3101 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
3102 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
3103 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
3104 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
3105 hevc_v4l2m2m_decoder_select="hevc_mp4toannexb_bsf"
3106 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
3107 mjpeg_cuvid_decoder_deps="cuvid"
3108 mjpeg_qsv_decoder_select="qsvdec"
3109 mjpeg_qsv_encoder_deps="libmfx"
3110 mjpeg_qsv_encoder_select="qsvenc"
3111 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
3112 mjpeg_vaapi_encoder_select="cbs_jpeg jpegtables vaapi_encode"
3113 mp3_mf_encoder_deps="mediafoundation"
3114 mpeg1_cuvid_decoder_deps="cuvid"
3115 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
3116 mpeg2_crystalhd_decoder_select="crystalhd"
3117 mpeg2_cuvid_decoder_deps="cuvid"
3118 mpeg2_mmal_decoder_deps="mmal"
3119 mpeg2_mediacodec_decoder_deps="mediacodec"
3120 mpeg2_qsv_decoder_select="qsvdec"
3121 mpeg2_qsv_encoder_select="qsvenc"
3122 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
3123 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
3124 mpeg4_crystalhd_decoder_select="crystalhd"
3125 mpeg4_cuvid_decoder_deps="cuvid"
3126 mpeg4_mediacodec_decoder_deps="mediacodec"
3127 mpeg4_mmal_decoder_deps="mmal"
3128 mpeg4_omx_encoder_deps="omx"
3129 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
3130 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
3131 msmpeg4_crystalhd_decoder_select="crystalhd"
3132 nvenc_h264_encoder_select="h264_nvenc_encoder"
3133 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
3134 vc1_crystalhd_decoder_select="crystalhd"
3135 vc1_cuvid_decoder_deps="cuvid"
3136 vc1_mmal_decoder_deps="mmal"
3137 vc1_qsv_decoder_select="qsvdec"
3138 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
3139 vp8_cuvid_decoder_deps="cuvid"
3140 vp8_mediacodec_decoder_deps="mediacodec"
3141 vp8_qsv_decoder_select="qsvdec"
3142 vp8_rkmpp_decoder_deps="rkmpp"
3143 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
3144 vp8_vaapi_encoder_select="vaapi_encode"
3145 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
3146 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
3147 vp9_cuvid_decoder_deps="cuvid"
3148 vp9_mediacodec_decoder_deps="mediacodec"
3149 vp9_qsv_decoder_select="qsvdec"
3150 vp9_rkmpp_decoder_deps="rkmpp"
3151 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
3152 vp9_vaapi_encoder_select="vaapi_encode"
3153 vp9_qsv_encoder_deps="libmfx MFX_CODEC_VP9"
3154 vp9_qsv_encoder_select="qsvenc"
3155 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
3156 wmv3_crystalhd_decoder_select="crystalhd"
3157 av1_qsv_decoder_select="qsvdec"
3158
3159 # parsers
3160 aac_parser_select="adts_header"
3161 av1_parser_select="cbs_av1"
3162 h264_parser_select="atsc_a53 golomb h264dsp h264parse"
3163 hevc_parser_select="hevcparse"
3164 mpegaudio_parser_select="mpegaudioheader"
3165 mpegvideo_parser_select="mpegvideo"
3166 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
3167 vc1_parser_select="vc1dsp"
3168
3169 # bitstream_filters
3170 aac_adtstoasc_bsf_select="adts_header"
3171 av1_frame_merge_bsf_select="cbs_av1"
3172 av1_frame_split_bsf_select="cbs_av1"
3173 av1_metadata_bsf_select="cbs_av1"
3174 eac3_core_bsf_select="ac3_parser"
3175 filter_units_bsf_select="cbs"
3176 h264_metadata_bsf_deps="const_nan"
3177 h264_metadata_bsf_select="cbs_h264"
3178 h264_redundant_pps_bsf_select="cbs_h264"
3179 hevc_metadata_bsf_select="cbs_h265"
3180 mjpeg2jpeg_bsf_select="jpegtables"
3181 mpeg2_metadata_bsf_select="cbs_mpeg2"
3182 trace_headers_bsf_select="cbs"
3183 vp9_metadata_bsf_select="cbs_vp9"
3184
3185 # external libraries
3186 aac_at_decoder_deps="audiotoolbox"
3187 aac_at_decoder_select="aac_adtstoasc_bsf"
3188 ac3_at_decoder_deps="audiotoolbox"
3189 ac3_at_decoder_select="ac3_parser"
3190 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
3191 alac_at_decoder_deps="audiotoolbox"
3192 amr_nb_at_decoder_deps="audiotoolbox"
3193 avisynth_deps_any="libdl LoadLibrary"
3194 avisynth_demuxer_deps="avisynth"
3195 avisynth_demuxer_select="riffdec"
3196 eac3_at_decoder_deps="audiotoolbox"
3197 eac3_at_decoder_select="ac3_parser"
3198 gsm_ms_at_decoder_deps="audiotoolbox"
3199 ilbc_at_decoder_deps="audiotoolbox"
3200 mp1_at_decoder_deps="audiotoolbox"
3201 mp2_at_decoder_deps="audiotoolbox"
3202 mp3_at_decoder_deps="audiotoolbox"
3203 mp1_at_decoder_select="mpegaudioheader"
3204 mp2_at_decoder_select="mpegaudioheader"
3205 mp3_at_decoder_select="mpegaudioheader"
3206 pcm_alaw_at_decoder_deps="audiotoolbox"
3207 pcm_mulaw_at_decoder_deps="audiotoolbox"
3208 qdmc_decoder_select="fft"
3209 qdmc_at_decoder_deps="audiotoolbox"
3210 qdm2_at_decoder_deps="audiotoolbox"
3211 aac_at_encoder_deps="audiotoolbox"
3212 aac_at_encoder_select="audio_frame_queue"
3213 alac_at_encoder_deps="audiotoolbox"
3214 alac_at_encoder_select="audio_frame_queue"
3215 ilbc_at_encoder_deps="audiotoolbox"
3216 ilbc_at_encoder_select="audio_frame_queue"
3217 pcm_alaw_at_encoder_deps="audiotoolbox"
3218 pcm_alaw_at_encoder_select="audio_frame_queue"
3219 pcm_mulaw_at_encoder_deps="audiotoolbox"
3220 pcm_mulaw_at_encoder_select="audio_frame_queue"
3221 chromaprint_muxer_deps="chromaprint"
3222 h264_videotoolbox_encoder_deps="pthreads"
3223 h264_videotoolbox_encoder_select="atsc_a53 videotoolbox_encoder"
3224 hevc_videotoolbox_encoder_deps="pthreads"
3225 hevc_videotoolbox_encoder_select="atsc_a53 videotoolbox_encoder"
3226 libaom_av1_decoder_deps="libaom"
3227 libaom_av1_encoder_deps="libaom"
3228 libaom_av1_encoder_select="extract_extradata_bsf"
3229 libaribb24_decoder_deps="libaribb24"
3230 libcelt_decoder_deps="libcelt"
3231 libcodec2_decoder_deps="libcodec2"
3232 libcodec2_encoder_deps="libcodec2"
3233 libdav1d_decoder_deps="libdav1d"
3234 libdav1d_decoder_select="atsc_a53"
3235 libdavs2_decoder_deps="libdavs2"
3236 libfdk_aac_decoder_deps="libfdk_aac"
3237 libfdk_aac_encoder_deps="libfdk_aac"
3238 libfdk_aac_encoder_select="audio_frame_queue"
3239 libgme_demuxer_deps="libgme"
3240 libgsm_decoder_deps="libgsm"
3241 libgsm_encoder_deps="libgsm"
3242 libgsm_ms_decoder_deps="libgsm"
3243 libgsm_ms_encoder_deps="libgsm"
3244 libilbc_decoder_deps="libilbc"
3245 libilbc_encoder_deps="libilbc"
3246 libkvazaar_encoder_deps="libkvazaar"
3247 libmodplug_demuxer_deps="libmodplug"
3248 libmp3lame_encoder_deps="libmp3lame"
3249 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
3250 libopencore_amrnb_decoder_deps="libopencore_amrnb"
3251 libopencore_amrnb_encoder_deps="libopencore_amrnb"
3252 libopencore_amrnb_encoder_select="audio_frame_queue"
3253 libopencore_amrwb_decoder_deps="libopencore_amrwb"
3254 libopenh264_decoder_deps="libopenh264"
3255 libopenh264_decoder_select="h264_mp4toannexb_bsf"
3256 libopenh264_encoder_deps="libopenh264"
3257 libopenjpeg_decoder_deps="libopenjpeg"
3258 libopenjpeg_encoder_deps="libopenjpeg"
3259 libopenmpt_demuxer_deps="libopenmpt"
3260 libopus_decoder_deps="libopus"
3261 libopus_encoder_deps="libopus"
3262 libopus_encoder_select="audio_frame_queue"
3263 librav1e_encoder_deps="librav1e"
3264 librav1e_encoder_select="extract_extradata_bsf"
3265 librsvg_decoder_deps="librsvg"
3266 libshine_encoder_deps="libshine"
3267 libshine_encoder_select="audio_frame_queue"
3268 libspeex_decoder_deps="libspeex"
3269 libspeex_encoder_deps="libspeex"
3270 libspeex_encoder_select="audio_frame_queue"
3271 libsvtav1_encoder_deps="libsvtav1"
3272 libtheora_encoder_deps="libtheora"
3273 libtwolame_encoder_deps="libtwolame"
3274 libuavs3d_decoder_deps="libuavs3d"
3275 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
3276 libvorbis_decoder_deps="libvorbis"
3277 libvorbis_encoder_deps="libvorbis libvorbisenc"
3278 libvorbis_encoder_select="audio_frame_queue"
3279 libvpx_vp8_decoder_deps="libvpx"
3280 libvpx_vp8_encoder_deps="libvpx"
3281 libvpx_vp9_decoder_deps="libvpx"
3282 libvpx_vp9_encoder_deps="libvpx"
3283 libwebp_encoder_deps="libwebp"
3284 libwebp_anim_encoder_deps="libwebp"
3285 libx262_encoder_deps="libx262"
3286 libx264_encoder_deps="libx264"
3287 libx264_encoder_select="atsc_a53"
3288 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
3289 libx264rgb_encoder_select="libx264_encoder"
3290 libx265_encoder_deps="libx265"
3291 libxavs_encoder_deps="libxavs"
3292 libxavs2_encoder_deps="libxavs2"
3293 libxvid_encoder_deps="libxvid"
3294 libzvbi_teletext_decoder_deps="libzvbi"
3295 vapoursynth_demuxer_deps="vapoursynth"
3296 videotoolbox_suggest="coreservices"
3297 videotoolbox_deps="corefoundation coremedia corevideo"
3298 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
3299
3300 # demuxers / muxers
3301 ac3_demuxer_select="ac3_parser"
3302 act_demuxer_select="riffdec"
3303 aiff_muxer_select="iso_media"
3304 asf_demuxer_select="riffdec"
3305 asf_o_demuxer_select="riffdec"
3306 asf_muxer_select="riffenc"
3307 asf_stream_muxer_select="asf_muxer"
3308 av1_demuxer_select="av1_frame_merge_bsf av1_parser"
3309 avi_demuxer_select="riffdec exif"
3310 avi_muxer_select="riffenc"
3311 caf_demuxer_select="iso_media"
3312 caf_muxer_select="iso_media"
3313 dash_muxer_select="mp4_muxer"
3314 dash_demuxer_deps="libxml2"
3315 dirac_demuxer_select="dirac_parser"
3316 dts_demuxer_select="dca_parser"
3317 dtshd_demuxer_select="dca_parser"
3318 dv_demuxer_select="dvprofile"
3319 dv_muxer_select="dvprofile"
3320 dxa_demuxer_select="riffdec"
3321 eac3_demuxer_select="ac3_parser"
3322 f4v_muxer_select="mov_muxer"
3323 fifo_muxer_deps="threads"
3324 flac_demuxer_select="flac_parser"
3325 flv_muxer_select="aac_adtstoasc_bsf"
3326 gxf_muxer_select="pcm_rechunk_bsf"
3327 hds_muxer_select="flv_muxer"
3328 hls_muxer_select="mpegts_muxer"
3329 hls_muxer_suggest="gcrypt openssl"
3330 image2_alias_pix_demuxer_select="image2_demuxer"
3331 image2_brender_pix_demuxer_select="image2_demuxer"
3332 ipod_muxer_select="mov_muxer"
3333 ismv_muxer_select="mov_muxer"
3334 ivf_muxer_select="av1_metadata_bsf vp9_superframe_bsf"
3335 latm_muxer_select="aac_adtstoasc_bsf"
3336 matroska_audio_muxer_select="matroska_muxer"
3337 matroska_demuxer_select="riffdec"
3338 matroska_demuxer_suggest="bzlib lzo zlib"
3339 matroska_muxer_select="riffenc vp9_superframe_bsf aac_adtstoasc_bsf"
3340 mlp_demuxer_select="mlp_parser"
3341 mmf_muxer_select="riffenc"
3342 mov_demuxer_select="iso_media riffdec"
3343 mov_demuxer_suggest="zlib"
3344 mov_muxer_select="iso_media riffenc rtpenc_chain vp9_superframe_bsf aac_adtstoasc_bsf"
3345 mp3_demuxer_select="mpegaudio_parser"
3346 mp3_muxer_select="mpegaudioheader"
3347 mp4_muxer_select="mov_muxer"
3348 mpegts_demuxer_select="iso_media"
3349 mpegts_muxer_select="ac3_parser adts_muxer latm_muxer h264_mp4toannexb_bsf hevc_mp4toannexb_bsf"
3350 mpegtsraw_demuxer_select="mpegts_demuxer"
3351 mxf_muxer_select="golomb pcm_rechunk_bsf"
3352 mxf_d10_muxer_select="mxf_muxer"
3353 mxf_opatom_muxer_select="mxf_muxer"
3354 nut_muxer_select="riffenc"
3355 nuv_demuxer_select="riffdec"
3356 obu_demuxer_select="av1_frame_merge_bsf av1_parser"
3357 oga_muxer_select="ogg_muxer"
3358 ogg_demuxer_select="dirac_parse"
3359 ogv_muxer_select="ogg_muxer"
3360 opus_muxer_select="ogg_muxer"
3361 psp_muxer_select="mov_muxer"
3362 rtp_demuxer_select="sdp_demuxer"
3363 rtp_muxer_select="golomb jpegtables"
3364 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3365 rtsp_demuxer_select="http_protocol rtpdec"
3366 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3367 sap_demuxer_select="sdp_demuxer"
3368 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3369 sdp_demuxer_select="rtpdec"
3370 smoothstreaming_muxer_select="ismv_muxer"
3371 spdif_demuxer_select="adts_header"
3372 spdif_muxer_select="adts_header"
3373 spx_muxer_select="ogg_muxer"
3374 swf_demuxer_suggest="zlib"
3375 tak_demuxer_select="tak_parser"
3376 truehd_demuxer_select="mlp_parser"
3377 tg2_muxer_select="mov_muxer"
3378 tgp_muxer_select="mov_muxer"
3379 vobsub_demuxer_select="mpegps_demuxer"
3380 w64_demuxer_select="wav_demuxer"
3381 w64_muxer_select="wav_muxer"
3382 wav_demuxer_select="riffdec"
3383 wav_muxer_select="riffenc"
3384 webm_chunk_muxer_select="webm_muxer"
3385 webm_muxer_select="riffenc"
3386 webm_dash_manifest_demuxer_select="matroska_demuxer"
3387 wtv_demuxer_select="mpegts_demuxer riffdec"
3388 wtv_muxer_select="mpegts_muxer riffenc"
3389 xmv_demuxer_select="riffdec"
3390 xwma_demuxer_select="riffdec"
3391
3392 # indevs / outdevs
3393 android_camera_indev_deps="android camera2ndk mediandk pthreads"
3394 android_camera_indev_extralibs="-landroid -lcamera2ndk -lmediandk"
3395 alsa_indev_deps="alsa"
3396 alsa_outdev_deps="alsa"
3397 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3398 avfoundation_indev_suggest="coregraphics applicationservices"
3399 avfoundation_indev_extralibs="-framework Foundation"
3400 audiotoolbox_outdev_deps="audiotoolbox pthreads"
3401 audiotoolbox_outdev_extralibs="-framework AudioToolbox -framework CoreAudio"
3402 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3403 caca_outdev_deps="libcaca"
3404 decklink_deps_any="libdl LoadLibrary"
3405 decklink_indev_deps="decklink threads"
3406 decklink_indev_extralibs="-lstdc++"
3407 decklink_outdev_deps="decklink threads"
3408 decklink_outdev_suggest="libklvanc"
3409 decklink_outdev_extralibs="-lstdc++"
3410 dshow_indev_deps="IBaseFilter"
3411 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3412 fbdev_indev_deps="linux_fb_h"
3413 fbdev_outdev_deps="linux_fb_h"
3414 gdigrab_indev_deps="CreateDIBSection"
3415 gdigrab_indev_extralibs="-lgdi32"
3416 gdigrab_indev_select="bmp_decoder"
3417 iec61883_indev_deps="libiec61883"
3418 jack_indev_deps="libjack"
3419 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3420 kmsgrab_indev_deps="libdrm"
3421 lavfi_indev_deps="avfilter"
3422 libcdio_indev_deps="libcdio"
3423 libdc1394_indev_deps="libdc1394"
3424 openal_indev_deps="openal"
3425 opengl_outdev_deps="opengl"
3426 opengl_outdev_suggest="sdl2"
3427 oss_indev_deps_any="sys_soundcard_h"
3428 oss_outdev_deps_any="sys_soundcard_h"
3429 pulse_indev_deps="libpulse"
3430 pulse_outdev_deps="libpulse"
3431 sdl2_outdev_deps="sdl2"
3432 sndio_indev_deps="sndio"
3433 sndio_outdev_deps="sndio"
3434 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3435 v4l2_indev_suggest="libv4l2"
3436 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3437 v4l2_outdev_suggest="libv4l2"
3438 vfwcap_indev_deps="vfw32 vfwcap_defines"
3439 xcbgrab_indev_deps="libxcb"
3440 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3441 xv_outdev_deps="xlib"
3442
3443 # protocols
3444 async_protocol_deps="threads"
3445 bluray_protocol_deps="libbluray"
3446 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3447 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl mbedtls"
3448 ffrtmpcrypt_protocol_select="tcp_protocol"
3449 ffrtmphttp_protocol_conflict="librtmp_protocol"
3450 ffrtmphttp_protocol_select="http_protocol"
3451 ftp_protocol_select="tcp_protocol"
3452 gopher_protocol_select="network"
3453 http_protocol_select="tcp_protocol"
3454 http_protocol_suggest="zlib"
3455 httpproxy_protocol_select="tcp_protocol"
3456 httpproxy_protocol_suggest="zlib"
3457 https_protocol_select="tls_protocol"
3458 https_protocol_suggest="zlib"
3459 icecast_protocol_select="http_protocol"
3460 mmsh_protocol_select="http_protocol"
3461 mmst_protocol_select="network"
3462 rtmp_protocol_conflict="librtmp_protocol"
3463 rtmp_protocol_select="tcp_protocol"
3464 rtmp_protocol_suggest="zlib"
3465 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3466 rtmpe_protocol_suggest="zlib"
3467 rtmps_protocol_conflict="librtmp_protocol"
3468 rtmps_protocol_select="tls_protocol"
3469 rtmps_protocol_suggest="zlib"
3470 rtmpt_protocol_select="ffrtmphttp_protocol"
3471 rtmpt_protocol_suggest="zlib"
3472 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3473 rtmpte_protocol_suggest="zlib"
3474 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3475 rtmpts_protocol_suggest="zlib"
3476 rtp_protocol_select="udp_protocol"
3477 schannel_conflict="openssl gnutls libtls mbedtls"
3478 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3479 sctp_protocol_select="network"
3480 securetransport_conflict="openssl gnutls libtls mbedtls"
3481 srtp_protocol_select="rtp_protocol srtp"
3482 tcp_protocol_select="network"
3483 tls_protocol_deps_any="gnutls openssl schannel securetransport libtls mbedtls"
3484 tls_protocol_select="tcp_protocol"
3485 udp_protocol_select="network"
3486 udplite_protocol_select="network"
3487 unix_protocol_deps="sys_un_h"
3488 unix_protocol_select="network"
3489
3490 # external library protocols
3491 libamqp_protocol_deps="librabbitmq"
3492 libamqp_protocol_select="network"
3493 librtmp_protocol_deps="librtmp"
3494 librtmpe_protocol_deps="librtmp"
3495 librtmps_protocol_deps="librtmp"
3496 librtmpt_protocol_deps="librtmp"
3497 librtmpte_protocol_deps="librtmp"
3498 libsmbclient_protocol_deps="libsmbclient gplv3"
3499 libsrt_protocol_deps="libsrt"
3500 libsrt_protocol_select="network"
3501 libssh_protocol_deps="libssh"
3502 libtls_conflict="openssl gnutls mbedtls"
3503 libzmq_protocol_deps="libzmq"
3504 libzmq_protocol_select="network"
3505
3506 # filters
3507 afftdn_filter_deps="avcodec"
3508 afftdn_filter_select="fft"
3509 afftfilt_filter_deps="avcodec"
3510 afftfilt_filter_select="fft"
3511 afir_filter_deps="avcodec"
3512 afir_filter_select="rdft"
3513 amovie_filter_deps="avcodec avformat"
3514 aresample_filter_deps="swresample"
3515 asoftclip_filter_deps="swresample"
3516 asr_filter_deps="pocketsphinx"
3517 ass_filter_deps="libass"
3518 atempo_filter_deps="avcodec"
3519 atempo_filter_select="rdft"
3520 avgblur_opencl_filter_deps="opencl"
3521 avgblur_vulkan_filter_deps="vulkan libglslang"
3522 azmq_filter_deps="libzmq"
3523 blackframe_filter_deps="gpl"
3524 bm3d_filter_deps="avcodec"
3525 bm3d_filter_select="dct"
3526 boxblur_filter_deps="gpl"
3527 boxblur_opencl_filter_deps="opencl gpl"
3528 bs2b_filter_deps="libbs2b"
3529 chromaber_vulkan_filter_deps="vulkan libglslang"
3530 colorkey_opencl_filter_deps="opencl"
3531 colormatrix_filter_deps="gpl"
3532 convolution_opencl_filter_deps="opencl"
3533 convolve_filter_deps="avcodec"
3534 convolve_filter_select="fft"
3535 coreimage_filter_deps="coreimage appkit"
3536 coreimage_filter_extralibs="-framework OpenGL"
3537 coreimagesrc_filter_deps="coreimage appkit"
3538 coreimagesrc_filter_extralibs="-framework OpenGL"
3539 cover_rect_filter_deps="avcodec avformat gpl"
3540 cropdetect_filter_deps="gpl"
3541 deconvolve_filter_deps="avcodec"
3542 deconvolve_filter_select="fft"
3543 deinterlace_qsv_filter_deps="libmfx"
3544 deinterlace_vaapi_filter_deps="vaapi"
3545 delogo_filter_deps="gpl"
3546 denoise_vaapi_filter_deps="vaapi"
3547 derain_filter_select="dnn"
3548 deshake_filter_select="pixelutils"
3549 deshake_opencl_filter_deps="opencl"
3550 dilation_opencl_filter_deps="opencl"
3551 dnn_processing_filter_select="dnn"
3552 drawtext_filter_deps="libfreetype"
3553 drawtext_filter_suggest="libfontconfig libfribidi"
3554 elbg_filter_deps="avcodec"
3555 eq_filter_deps="gpl"
3556 erosion_opencl_filter_deps="opencl"
3557 fftfilt_filter_deps="avcodec"
3558 fftfilt_filter_select="rdft"
3559 fftdnoiz_filter_deps="avcodec"
3560 fftdnoiz_filter_select="fft"
3561 find_rect_filter_deps="avcodec avformat gpl"
3562 firequalizer_filter_deps="avcodec"
3563 firequalizer_filter_select="rdft"
3564 flite_filter_deps="libflite"
3565 framerate_filter_select="scene_sad"
3566 freezedetect_filter_select="scene_sad"
3567 frei0r_filter_deps="frei0r libdl"
3568 frei0r_src_filter_deps="frei0r libdl"
3569 fspp_filter_deps="gpl"
3570 headphone_filter_select="fft"
3571 histeq_filter_deps="gpl"
3572 hqdn3d_filter_deps="gpl"
3573 interlace_filter_deps="gpl"
3574 kerndeint_filter_deps="gpl"
3575 ladspa_filter_deps="ladspa libdl"
3576 lensfun_filter_deps="liblensfun version3"
3577 lv2_filter_deps="lv2"
3578 mcdeint_filter_deps="avcodec gpl"
3579 movie_filter_deps="avcodec avformat"
3580 mpdecimate_filter_deps="gpl"
3581 mpdecimate_filter_select="pixelutils"
3582 minterpolate_filter_select="scene_sad"
3583 mptestsrc_filter_deps="gpl"
3584 negate_filter_deps="lut_filter"
3585 nlmeans_opencl_filter_deps="opencl"
3586 nnedi_filter_deps="gpl"
3587 ocr_filter_deps="libtesseract"
3588 ocv_filter_deps="libopencv"
3589 openclsrc_filter_deps="opencl"
3590 overlay_opencl_filter_deps="opencl"
3591 overlay_qsv_filter_deps="libmfx"
3592 overlay_qsv_filter_select="qsvvpp"
3593 overlay_vulkan_filter_deps="vulkan libglslang"
3594 owdenoise_filter_deps="gpl"
3595 pad_opencl_filter_deps="opencl"
3596 pan_filter_deps="swresample"
3597 perspective_filter_deps="gpl"
3598 phase_filter_deps="gpl"
3599 pp7_filter_deps="gpl"
3600 pp_filter_deps="gpl postproc"
3601 prewitt_opencl_filter_deps="opencl"
3602 procamp_vaapi_filter_deps="vaapi"
3603 program_opencl_filter_deps="opencl"
3604 pullup_filter_deps="gpl"
3605 removelogo_filter_deps="avcodec avformat swscale"
3606 repeatfields_filter_deps="gpl"
3607 resample_filter_deps="avresample"
3608 roberts_opencl_filter_deps="opencl"
3609 rubberband_filter_deps="librubberband"
3610 sab_filter_deps="gpl swscale"
3611 scale2ref_filter_deps="swscale"
3612 scale_filter_deps="swscale"
3613 scale_qsv_filter_deps="libmfx"
3614 scdet_filter_select="scene_sad"
3615 select_filter_select="scene_sad"
3616 sharpness_vaapi_filter_deps="vaapi"
3617 showcqt_filter_deps="avcodec avformat swscale"
3618 showcqt_filter_suggest="libfontconfig libfreetype"
3619 showcqt_filter_select="fft"
3620 showfreqs_filter_deps="avcodec"
3621 showfreqs_filter_select="fft"
3622 showspatial_filter_select="fft"
3623 showspectrum_filter_deps="avcodec"
3624 showspectrum_filter_select="fft"
3625 showspectrumpic_filter_deps="avcodec"
3626 showspectrumpic_filter_select="fft"
3627 signature_filter_deps="gpl avcodec avformat"
3628 sinc_filter_select="rdft"
3629 smartblur_filter_deps="gpl swscale"
3630 sobel_opencl_filter_deps="opencl"
3631 sofalizer_filter_deps="libmysofa avcodec"
3632 sofalizer_filter_select="fft"
3633 spectrumsynth_filter_deps="avcodec"
3634 spectrumsynth_filter_select="fft"
3635 spp_filter_deps="gpl avcodec"
3636 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3637 sr_filter_deps="avformat swscale"
3638 sr_filter_select="dnn"
3639 stereo3d_filter_deps="gpl"
3640 subtitles_filter_deps="avformat avcodec libass"
3641 super2xsai_filter_deps="gpl"
3642 pixfmts_super2xsai_test_deps="super2xsai_filter"
3643 superequalizer_filter_select="rdft"
3644 surround_filter_select="rdft"
3645 tinterlace_filter_deps="gpl"
3646 tinterlace_merge_test_deps="tinterlace_filter"
3647 tinterlace_pad_test_deps="tinterlace_filter"
3648 tonemap_filter_deps="const_nan"
3649 tonemap_vaapi_filter_deps="vaapi VAProcFilterParameterBufferHDRToneMapping"
3650 tonemap_opencl_filter_deps="opencl const_nan"
3651 transpose_opencl_filter_deps="opencl"
3652 transpose_vaapi_filter_deps="vaapi VAProcPipelineCaps_rotation_flags"
3653 unsharp_opencl_filter_deps="opencl"
3654 uspp_filter_deps="gpl avcodec"
3655 vaguedenoiser_filter_deps="gpl"
3656 vidstabdetect_filter_deps="libvidstab"
3657 vidstabtransform_filter_deps="libvidstab"
3658 libvmaf_filter_deps="libvmaf pthreads"
3659 zmq_filter_deps="libzmq"
3660 zoompan_filter_deps="swscale"
3661 zscale_filter_deps="libzimg const_nan"
3662 scale_vaapi_filter_deps="vaapi"
3663 scale_vulkan_filter_deps="vulkan libglslang"
3664 vpp_qsv_filter_deps="libmfx"
3665 vpp_qsv_filter_select="qsvvpp"
3666 xfade_opencl_filter_deps="opencl"
3667 yadif_cuda_filter_deps="ffnvcodec"
3668 yadif_cuda_filter_deps_any="cuda_nvcc cuda_llvm"
3669
3670 # examples
3671 avio_list_dir_deps="avformat avutil"
3672 avio_reading_deps="avformat avcodec avutil"
3673 decode_audio_example_deps="avcodec avutil"
3674 decode_video_example_deps="avcodec avutil"
3675 demuxing_decoding_example_deps="avcodec avformat avutil"
3676 encode_audio_example_deps="avcodec avutil"
3677 encode_video_example_deps="avcodec avutil"
3678 extract_mvs_example_deps="avcodec avformat avutil"
3679 filter_audio_example_deps="avfilter avutil"
3680 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3681 filtering_video_example_deps="avfilter avcodec avformat avutil"
3682 http_multiclient_example_deps="avformat avutil fork"
3683 hw_decode_example_deps="avcodec avformat avutil"
3684 metadata_example_deps="avformat avutil"
3685 muxing_example_deps="avcodec avformat avutil swscale"
3686 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3687 remuxing_example_deps="avcodec avformat avutil"
3688 resampling_audio_example_deps="avutil swresample"
3689 scaling_video_example_deps="avutil swscale"
3690 transcode_aac_example_deps="avcodec avformat swresample"
3691 transcoding_example_deps="avfilter avcodec avformat avutil"
3692 vaapi_encode_example_deps="avcodec avutil h264_vaapi_encoder"
3693 vaapi_transcode_example_deps="avcodec avformat avutil h264_vaapi_encoder"
3694
3695 # EXTRALIBS_LIST
3696 cpu_init_extralibs="pthreads_extralibs"
3697 cws2fws_extralibs="zlib_extralibs"
3698
3699 # libraries, in any order
3700 avcodec_deps="avutil"
3701 avcodec_suggest="libm"
3702 avcodec_select="null_bsf"
3703 avdevice_deps="avformat avcodec avutil"
3704 avdevice_suggest="libm"
3705 avfilter_deps="avutil"
3706 avfilter_suggest="libm"
3707 avformat_deps="avcodec avutil"
3708 avformat_suggest="libm network zlib"
3709 avresample_deps="avutil"
3710 avresample_suggest="libm"
3711 avutil_suggest="clock_gettime ffnvcodec libm libdrm libmfx opencl user32 vaapi vulkan videotoolbox corefoundation corevideo coremedia bcrypt"
3712 postproc_deps="avutil gpl"
3713 postproc_suggest="libm"
3714 swresample_deps="avutil"
3715 swresample_suggest="libm libsoxr"
3716 swscale_deps="avutil"
3717 swscale_suggest="libm"
3718
3719 avcodec_extralibs="pthreads_extralibs iconv_extralibs dxva2_extralibs"
3720 avfilter_extralibs="pthreads_extralibs"
3721 avutil_extralibs="d3d11va_extralibs nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3722
3723 # programs
3724 ffmpeg_deps="avcodec avfilter avformat"
3725 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3726                hflip_filter null_filter
3727                transpose_filter trim_filter vflip_filter"
3728 ffmpeg_suggest="ole32 psapi shell32"
3729 ffplay_deps="avcodec avformat swscale swresample sdl2"
3730 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3731 ffplay_suggest="shell32"
3732 ffprobe_deps="avcodec avformat"
3733 ffprobe_suggest="shell32"
3734
3735 # documentation
3736 podpages_deps="perl"
3737 manpages_deps="perl pod2man"
3738 htmlpages_deps="perl"
3739 htmlpages_deps_any="makeinfo_html texi2html"
3740 txtpages_deps="perl makeinfo"
3741 doc_deps_any="manpages htmlpages podpages txtpages"
3742
3743 # default parameters
3744
3745 logfile="ffbuild/config.log"
3746
3747 # installation paths
3748 prefix_default="/usr/local"
3749 bindir_default='${prefix}/bin'
3750 datadir_default='${prefix}/share/ffmpeg'
3751 docdir_default='${prefix}/share/doc/ffmpeg'
3752 incdir_default='${prefix}/include'
3753 libdir_default='${prefix}/lib'
3754 mandir_default='${prefix}/share/man'
3755
3756 # toolchain
3757 ar_default="ar"
3758 cc_default="gcc"
3759 cxx_default="g++"
3760 host_cc_default="gcc"
3761 doxygen_default="doxygen"
3762 install="install"
3763 ln_s_default="ln -s -f"
3764 nm_default="nm -g"
3765 pkg_config_default=pkg-config
3766 ranlib_default="ranlib"
3767 strip_default="strip"
3768 version_script='--version-script'
3769 objformat="elf32"
3770 x86asmexe_default="nasm"
3771 windres_default="windres"
3772 striptype="direct"
3773
3774 # OS
3775 target_os_default=$(tolower $(uname -s))
3776 host_os=$target_os_default
3777
3778 # machine
3779 if test "$target_os_default" = aix; then
3780     arch_default=$(uname -p)
3781     strip_default="strip -X32_64"
3782     nm_default="nm -g -X32_64"
3783 else
3784     arch_default=$(uname -m)
3785 fi
3786 cpu="generic"
3787 intrinsics="none"
3788
3789 # configurable options
3790 enable $PROGRAM_LIST
3791 enable $DOCUMENT_LIST
3792 enable $EXAMPLE_LIST
3793 enable $(filter_out avresample $LIBRARY_LIST)
3794 enable stripping
3795
3796 enable asm
3797 enable debug
3798 enable doc
3799 enable faan faandct faanidct
3800 enable large_tests
3801 enable optimizations
3802 enable runtime_cpudetect
3803 enable safe_bitstream_reader
3804 enable static
3805 enable swscale_alpha
3806 enable valgrind_backtrace
3807
3808 sws_max_filter_size_default=256
3809 set_default sws_max_filter_size
3810
3811 # internal components are enabled by default
3812 enable $EXTRALIBS_LIST
3813
3814 # Avoid external, non-system, libraries getting enabled by dependency resolution
3815 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3816
3817 # build settings
3818 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3819 LIBPREF="lib"
3820 LIBSUF=".a"
3821 FULLNAME='$(NAME)$(BUILDSUF)'
3822 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3823 SLIBPREF="lib"
3824 SLIBSUF=".so"
3825 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3826 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3827 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3828 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3829 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3830 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3831 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3832
3833 asflags_filter=echo
3834 cflags_filter=echo
3835 ldflags_filter=echo
3836
3837 AS_C='-c'
3838 AS_O='-o $@'
3839 CC_C='-c'
3840 CC_E='-E -o $@'
3841 CC_O='-o $@'
3842 CXX_C='-c'
3843 CXX_O='-o $@'
3844 OBJCC_C='-c'
3845 OBJCC_E='-E -o $@'
3846 OBJCC_O='-o $@'
3847 X86ASM_O='-o $@'
3848 LD_O='-o $@'
3849 LD_LIB='-l%'
3850 LD_PATH='-L'
3851 HOSTCC_C='-c'
3852 HOSTCC_E='-E -o $@'
3853 HOSTCC_O='-o $@'
3854 HOSTLD_O='-o $@'
3855 NVCC_C='-c'
3856 NVCC_O='-o $@'
3857
3858 host_extralibs='-lm'
3859 host_cflags_filter=echo
3860 host_ldflags_filter=echo
3861
3862 target_path='$(CURDIR)'
3863
3864 # since the object filename is not given with the -MM flag, the compiler
3865 # is only able to print the basename, and we must add the path ourselves
3866 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3867 DEPFLAGS='-MM'
3868
3869 mkdir -p ffbuild
3870
3871 # find source path
3872 if test -f configure; then
3873     source_path=.
3874 elif test -f src/configure; then
3875     source_path=src
3876 else
3877     source_path=$(cd $(dirname "$0"); pwd)
3878     case "$source_path" in
3879         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3880     esac
3881     test -e "$source_path/config.h" &&
3882         die "Out of tree builds are impossible with config.h in source dir."
3883 fi
3884
3885 for v in "$@"; do
3886     r=${v#*=}
3887     l=${v%"$r"}
3888     r=$(sh_quote "$r")
3889     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3890 done
3891
3892 find_things_extern(){
3893     thing=$1
3894     pattern=$2
3895     file=$source_path/$3
3896     out=${4:-$thing}
3897     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$out/p" "$file"
3898 }
3899
3900 find_filters_extern(){
3901     file=$source_path/$1
3902     sed -n 's/^extern AVFilter ff_[avfsinkrc]\{2,5\}_\([[:alnum:]_]\{1,\}\);/\1_filter/p' $file
3903 }
3904
3905 FILTER_LIST=$(find_filters_extern libavfilter/allfilters.c)
3906 OUTDEV_LIST=$(find_things_extern muxer AVOutputFormat libavdevice/alldevices.c outdev)
3907 INDEV_LIST=$(find_things_extern demuxer AVInputFormat libavdevice/alldevices.c indev)
3908 MUXER_LIST=$(find_things_extern muxer AVOutputFormat libavformat/allformats.c)
3909 DEMUXER_LIST=$(find_things_extern demuxer AVInputFormat libavformat/allformats.c)
3910 ENCODER_LIST=$(find_things_extern encoder AVCodec libavcodec/allcodecs.c)
3911 DECODER_LIST=$(find_things_extern decoder AVCodec libavcodec/allcodecs.c)
3912 CODEC_LIST="
3913     $ENCODER_LIST
3914     $DECODER_LIST
3915 "
3916 PARSER_LIST=$(find_things_extern parser AVCodecParser libavcodec/parsers.c)
3917 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3918 HWACCEL_LIST=$(find_things_extern hwaccel AVHWAccel libavcodec/hwaccels.h)
3919 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3920
3921 AVCODEC_COMPONENTS_LIST="
3922     $BSF_LIST
3923     $DECODER_LIST
3924     $ENCODER_LIST
3925     $HWACCEL_LIST
3926     $PARSER_LIST
3927 "
3928
3929 AVDEVICE_COMPONENTS_LIST="
3930     $INDEV_LIST
3931     $OUTDEV_LIST
3932 "
3933
3934 AVFILTER_COMPONENTS_LIST="
3935     $FILTER_LIST
3936 "
3937
3938 AVFORMAT_COMPONENTS_LIST="
3939     $DEMUXER_LIST
3940     $MUXER_LIST
3941     $PROTOCOL_LIST
3942 "
3943
3944 ALL_COMPONENTS="
3945     $AVCODEC_COMPONENTS_LIST
3946     $AVDEVICE_COMPONENTS_LIST
3947     $AVFILTER_COMPONENTS_LIST
3948     $AVFORMAT_COMPONENTS_LIST
3949 "
3950
3951 for n in $COMPONENT_LIST; do
3952     v=$(toupper ${n%s})_LIST
3953     eval enable \$$v
3954     eval ${n}_if_any="\$$v"
3955 done
3956
3957 enable $ARCH_EXT_LIST
3958
3959 die_unknown(){
3960     echo "Unknown option \"$1\"."
3961     echo "See $0 --help for available options."
3962     exit 1
3963 }
3964
3965 print_in_columns() {
3966     tr ' ' '\n' | sort | tr '\r\n' '  ' | awk -v col_width=24 -v width="$ncols" '
3967     {
3968         num_cols = width > col_width ? int(width / col_width) : 1;
3969         num_rows = int((NF + num_cols-1) / num_cols);
3970         y = x = 1;
3971         for (y = 1; y <= num_rows; y++) {
3972             i = y;
3973             for (x = 1; x <= num_cols; x++) {
3974                 if (i <= NF) {
3975                   line = sprintf("%s%-" col_width "s", line, $i);
3976                 }
3977                 i = i + num_rows;
3978             }
3979             print line; line = "";
3980         }
3981     }' | sed 's/ *$//'
3982 }
3983
3984 show_list() {
3985     suffix=_$1
3986     shift
3987     echo $* | sed s/$suffix//g | print_in_columns
3988     exit 0
3989 }
3990
3991 rand_list(){
3992     IFS=', '
3993     set -- $*
3994     unset IFS
3995     for thing; do
3996         comp=${thing%:*}
3997         prob=${thing#$comp}
3998         prob=${prob#:}
3999         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
4000         echo "prob ${prob:-0.5}"
4001         printf '%s\n' $comp
4002     done
4003 }
4004
4005 do_random(){
4006     action=$1
4007     shift
4008     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
4009     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
4010 }
4011
4012 for opt do
4013     optval="${opt#*=}"
4014     case "$opt" in
4015         --extra-ldflags=*)
4016             add_ldflags $optval
4017         ;;
4018         --extra-ldexeflags=*)
4019             add_ldexeflags $optval
4020         ;;
4021         --extra-ldsoflags=*)
4022             add_ldsoflags $optval
4023         ;;
4024         --extra-ldlibflags=*)
4025             warn "The --extra-ldlibflags option is only provided for compatibility and will be\n"\
4026                  "removed in the future. Use --extra-ldsoflags instead."
4027             add_ldsoflags $optval
4028         ;;
4029         --extra-libs=*)
4030             add_extralibs $optval
4031         ;;
4032         --disable-devices)
4033             disable $INDEV_LIST $OUTDEV_LIST
4034         ;;
4035         --enable-debug=*)
4036             debuglevel="$optval"
4037         ;;
4038         --disable-programs)
4039             disable $PROGRAM_LIST
4040         ;;
4041         --disable-everything)
4042             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
4043         ;;
4044         --disable-all)
4045             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
4046             disable $LIBRARY_LIST $PROGRAM_LIST doc
4047             enable avutil
4048         ;;
4049         --enable-random|--disable-random)
4050             action=${opt%%-random}
4051             do_random ${action#--} $COMPONENT_LIST
4052         ;;
4053         --enable-random=*|--disable-random=*)
4054             action=${opt%%-random=*}
4055             do_random ${action#--} $optval
4056         ;;
4057         --enable-sdl)
4058             enable sdl2
4059         ;;
4060         --enable-*=*|--disable-*=*)
4061             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
4062             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
4063             eval list=\$$(toupper $thing)_LIST
4064             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
4065             list=$(filter "$name" $list)
4066             [ "$list" = "" ] && warn "Option $opt did not match anything"
4067             test $action = enable && warn_if_gets_disabled $list
4068             $action $list
4069         ;;
4070         --enable-yasm|--disable-yasm)
4071             warn "The ${opt} option is only provided for compatibility and will be\n"\
4072                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
4073             test $opt = --enable-yasm && x86asm=yes || x86asm=no
4074         ;;
4075         --yasmexe=*)
4076             warn "The --yasmexe option is only provided for compatibility and will be\n"\
4077                  "removed in the future. Use --x86asmexe instead."
4078             x86asmexe="$optval"
4079         ;;
4080         --enable-?*|--disable-?*)
4081             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
4082             if is_in $option $COMPONENT_LIST; then
4083                 test $action = disable && action=unset
4084                 eval $action \$$(toupper ${option%s})_LIST
4085             elif is_in $option $CMDLINE_SELECT; then
4086                 $action $option
4087             else
4088                 die_unknown $opt
4089             fi
4090         ;;
4091         --list-*)
4092             NAME="${opt#--list-}"
4093             is_in $NAME $COMPONENT_LIST || die_unknown $opt
4094             NAME=${NAME%s}
4095             eval show_list $NAME \$$(toupper $NAME)_LIST
4096         ;;
4097         --help|-h) show_help
4098         ;;
4099         --quiet|-q) quiet=yes
4100         ;;
4101         --fatal-warnings) enable fatal_warnings
4102         ;;
4103         --libfuzzer=*)
4104             libfuzzer_path="$optval"
4105         ;;
4106         *)
4107             optname="${opt%%=*}"
4108             optname="${optname#--}"
4109             optname=$(echo "$optname" | sed 's/-/_/g')
4110             if is_in $optname $CMDLINE_SET; then
4111                 eval $optname='$optval'
4112             elif is_in $optname $CMDLINE_APPEND; then
4113                 append $optname "$optval"
4114             else
4115                 die_unknown $opt
4116             fi
4117         ;;
4118     esac
4119 done
4120
4121 for e in $env; do
4122     eval "export $e"
4123 done
4124
4125 if disabled autodetect; then
4126
4127     # Unless iconv is explicitely disabled by the user, we still want to probe
4128     # for the iconv from the libc.
4129     disabled iconv || enable libc_iconv
4130
4131     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
4132     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
4133 fi
4134 # Mark specifically enabled, but normally autodetected libraries as requested.
4135 for lib in $AUTODETECT_LIBS; do
4136     enabled $lib && request $lib
4137 done
4138 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
4139 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
4140 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
4141
4142 disabled logging && logfile=/dev/null
4143
4144 # command line configuration sanity checks
4145
4146 # we need to build at least one lib type
4147 if ! enabled_any static shared; then
4148     cat <<EOF
4149 At least one library type must be built.
4150 Specify --enable-static to build the static libraries or --enable-shared to
4151 build the shared libraries as well. To only build the shared libraries specify
4152 --disable-static in addition to --enable-shared.
4153 EOF
4154     exit 1
4155 fi
4156
4157 die_license_disabled() {
4158     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
4159 }
4160
4161 die_license_disabled_gpl() {
4162     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
4163 }
4164
4165 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
4166 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
4167
4168 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
4169 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
4170
4171 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4172
4173 if enabled nonfree; then
4174     license="nonfree and unredistributable"
4175 elif enabled gplv3; then
4176     license="GPL version 3 or later"
4177 elif enabled lgplv3; then
4178     license="LGPL version 3 or later"
4179 elif enabled gpl; then
4180     license="GPL version 2 or later"
4181 else
4182     license="LGPL version 2.1 or later"
4183 fi
4184
4185 enabled_all gnutls openssl &&
4186     die "GnuTLS and OpenSSL must not be enabled at the same time."
4187
4188 enabled_all gnutls mbedtls &&
4189     die "GnuTLS and mbedTLS must not be enabled at the same time."
4190
4191 enabled_all openssl mbedtls &&
4192     die "OpenSSL and mbedTLS must not be enabled at the same time."
4193
4194 # Disable all the library-specific components if the library itself
4195 # is disabled, see AVCODEC_LIST and following _LIST variables.
4196
4197 disable_components(){
4198     disabled ${1} && disable $(
4199         eval components="\$$(toupper ${1})_COMPONENTS"
4200         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
4201     )
4202 }
4203
4204 map 'disable_components $v' $LIBRARY_LIST
4205
4206 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
4207 set >> $logfile
4208
4209 test -n "$valgrind" && toolchain="valgrind-memcheck"
4210
4211 enabled ossfuzz && ! echo $CFLAGS | grep -q -- "-fsanitize="  && ! echo $CFLAGS | grep -q -- "-fcoverage-mapping" &&{
4212     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
4213     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
4214 }
4215
4216 case "$toolchain" in
4217     *-asan)
4218         cc_default="${toolchain%-asan}"
4219         add_cflags  -fsanitize=address
4220         add_ldflags -fsanitize=address
4221     ;;
4222     *-msan)
4223         cc_default="${toolchain%-msan}"
4224         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
4225         add_ldflags -fsanitize=memory
4226     ;;
4227     *-tsan)
4228         cc_default="${toolchain%-tsan}"
4229         add_cflags  -fsanitize=thread
4230         add_ldflags -fsanitize=thread
4231         case "$toolchain" in
4232             gcc-tsan)
4233                 add_cflags  -fPIC
4234                 add_ldflags -fPIC
4235                 ;;
4236         esac
4237     ;;
4238     *-usan)
4239         cc_default="${toolchain%-usan}"
4240         add_cflags  -fsanitize=undefined
4241         add_ldflags -fsanitize=undefined
4242     ;;
4243     valgrind-*)
4244         target_exec_default="valgrind"
4245         case "$toolchain" in
4246             valgrind-massif)
4247                 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"
4248                 ;;
4249             valgrind-memcheck)
4250                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
4251                 ;;
4252         esac
4253     ;;
4254     msvc)
4255         # Check whether the current MSVC version needs the C99 converter.
4256         # From MSVC 2013 (compiler major version 18) onwards, it does actually
4257         # support enough of C99 to build ffmpeg. Default to the new
4258         # behaviour if the regexp was unable to match anything, since this
4259         # successfully parses the version number of existing supported
4260         # versions that require the converter (MSVC 2010 and 2012).
4261         cl_major_ver=$(cl.exe 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
4262         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
4263             cc_default="cl.exe"
4264             cxx_default="cl.exe"
4265         else
4266             die "Unsupported MSVC version (2013 or newer required)"
4267         fi
4268         ld_default="$source_path/compat/windows/mslink"
4269         nm_default="dumpbin.exe -symbols"
4270         ar_default="lib.exe"
4271         case "${arch:-$arch_default}" in
4272         aarch64|arm64)
4273             as_default="armasm64.exe"
4274             ;;
4275         arm*)
4276             as_default="armasm.exe"
4277             ;;
4278         esac
4279         target_os_default="win32"
4280         # Use a relative path for TMPDIR. This makes sure all the
4281         # ffconf temp files are written with a relative path, avoiding
4282         # issues with msys/win32 path conversion for MSVC parameters
4283         # such as -Fo<file> or -out:<file>.
4284         TMPDIR=.
4285     ;;
4286     icl)
4287         cc_default="icl"
4288         ld_default="xilink"
4289         nm_default="dumpbin -symbols"
4290         ar_default="xilib"
4291         target_os_default="win32"
4292         TMPDIR=.
4293     ;;
4294     gcov)
4295         add_cflags  -fprofile-arcs -ftest-coverage
4296         add_ldflags -fprofile-arcs -ftest-coverage
4297     ;;
4298     llvm-cov)
4299         add_cflags -fprofile-arcs -ftest-coverage
4300         add_ldflags --coverage
4301     ;;
4302     hardened)
4303         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
4304         add_cflags   -fno-strict-overflow -fstack-protector-all
4305         add_ldflags  -Wl,-z,relro -Wl,-z,now
4306         add_cflags   -fPIE
4307         add_ldexeflags -fPIE -pie
4308     ;;
4309     ?*)
4310         die "Unknown toolchain $toolchain"
4311     ;;
4312 esac
4313
4314 if test -n "$cross_prefix"; then
4315     test -n "$arch" && test -n "$target_os" ||
4316         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
4317     enable cross_compile
4318 fi
4319
4320 set_default target_os
4321 if test "$target_os" = android; then
4322     cc_default="clang"
4323 fi
4324
4325 ar_default="${cross_prefix}${ar_default}"
4326 cc_default="${cross_prefix}${cc_default}"
4327 cxx_default="${cross_prefix}${cxx_default}"
4328 nm_default="${cross_prefix}${nm_default}"
4329 pkg_config_default="${cross_prefix}${pkg_config_default}"
4330 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
4331     ranlib_default="${cross_prefix}${ranlib_default} -D"
4332 else
4333     ranlib_default="${cross_prefix}${ranlib_default}"
4334 fi
4335 strip_default="${cross_prefix}${strip_default}"
4336 windres_default="${cross_prefix}${windres_default}"
4337
4338 sysinclude_default="${sysroot}/usr/include"
4339
4340 if enabled cuda_sdk; then
4341     warn "Option --enable-cuda-sdk is deprecated. Use --enable-cuda-nvcc instead."
4342     enable cuda_nvcc
4343 fi
4344
4345 if enabled cuda_nvcc; then
4346     nvcc_default="nvcc"
4347     nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
4348 else
4349     nvcc_default="clang"
4350     nvccflags_default="--cuda-gpu-arch=sm_30 -O2"
4351     NVCC_C=""
4352 fi
4353
4354 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
4355     target_exec x86asmexe nvcc
4356 enabled cross_compile || host_cc_default=$cc
4357 set_default host_cc
4358
4359 pkg_config_fail_message=""
4360 if ! $pkg_config --version >/dev/null 2>&1; then
4361     warn "$pkg_config not found, library detection may fail."
4362     pkg_config=false
4363 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
4364     pkg_config_fail_message="
4365 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
4366 fi
4367
4368 if test $doxygen != $doxygen_default && \
4369   ! $doxygen --version >/dev/null 2>&1; then
4370     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
4371 fi
4372
4373 exesuf() {
4374     case $1 in
4375         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
4376     esac
4377 }
4378
4379 EXESUF=$(exesuf $target_os)
4380 HOSTEXESUF=$(exesuf $host_os)
4381
4382 # set temporary file name
4383 : ${TMPDIR:=$TEMPDIR}
4384 : ${TMPDIR:=$TMP}
4385 : ${TMPDIR:=/tmp}
4386
4387 if [ -n "$tempprefix" ] ; then
4388     mktemp(){
4389         tmpname="$tempprefix.${HOSTNAME}.${UID}"
4390         echo "$tmpname"
4391         mkdir "$tmpname"
4392     }
4393 elif ! test_cmd mktemp -u XXXXXX; then
4394     # simple replacement for missing mktemp
4395     # NOT SAFE FOR GENERAL USE
4396     mktemp(){
4397         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
4398         echo "$tmpname"
4399         mkdir "$tmpname"
4400     }
4401 fi
4402
4403 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
4404     die "Unable to create temporary directory in $TMPDIR."
4405
4406 tmpfile(){
4407     tmp="${FFTMPDIR}/test"$2
4408     (set -C; exec > $tmp) 2> /dev/null ||
4409         die "Unable to create temporary file in $FFTMPDIR."
4410     eval $1=$tmp
4411 }
4412
4413 trap 'rm -rf -- "$FFTMPDIR"' EXIT
4414 trap 'exit 2' INT
4415
4416 tmpfile TMPASM .asm
4417 tmpfile TMPC   .c
4418 tmpfile TMPCPP .cpp
4419 tmpfile TMPE   $EXESUF
4420 tmpfile TMPH   .h
4421 tmpfile TMPM   .m
4422 tmpfile TMPCU  .cu
4423 tmpfile TMPO   .o
4424 tmpfile TMPS   .S
4425 tmpfile TMPSH  .sh
4426 tmpfile TMPV   .ver
4427
4428 unset -f mktemp
4429
4430 chmod +x $TMPE
4431
4432 # make sure we can execute files in $TMPDIR
4433 cat > $TMPSH 2>> $logfile <<EOF
4434 #! /bin/sh
4435 EOF
4436 chmod +x $TMPSH >> $logfile 2>&1
4437 if ! $TMPSH >> $logfile 2>&1; then
4438     cat <<EOF
4439 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
4440 variable to another directory and make sure that it is not mounted noexec.
4441 EOF
4442     die "Sanity test failed."
4443 fi
4444
4445 armasm_flags(){
4446     for flag; do
4447         case $flag in
4448             # Filter out MSVC cl.exe options from cflags that shouldn't
4449             # be passed to gas-preprocessor
4450             -M[TD]*)                                            ;;
4451             *)                  echo $flag                      ;;
4452         esac
4453    done
4454 }
4455
4456 cparser_flags(){
4457     for flag; do
4458         case $flag in
4459             -Wno-switch)             echo -Wno-switch-enum ;;
4460             -Wno-format-zero-length) ;;
4461             -Wdisabled-optimization) ;;
4462             -Wno-pointer-sign)       echo -Wno-other ;;
4463             *)                       echo $flag ;;
4464         esac
4465     done
4466 }
4467
4468 msvc_common_flags(){
4469     for flag; do
4470         case $flag in
4471             # In addition to specifying certain flags under the compiler
4472             # specific filters, they must be specified here as well or else the
4473             # generic catch all at the bottom will print the original flag.
4474             -Wall)                ;;
4475             -Wextra)              ;;
4476             -std=c*)              ;;
4477             # Common flags
4478             -fomit-frame-pointer) ;;
4479             -g)                   echo -Z7 ;;
4480             -fno-math-errno)      ;;
4481             -fno-common)          ;;
4482             -fno-signed-zeros)    ;;
4483             -fPIC)                ;;
4484             -mthumb)              ;;
4485             -march=*)             ;;
4486             -lz)                  echo zlib.lib ;;
4487             -lx264)               echo libx264.lib ;;
4488             -lstdc++)             ;;
4489             -l*)                  echo ${flag#-l}.lib ;;
4490             -LARGEADDRESSAWARE)   echo $flag ;;
4491             -L*)                  echo -libpath:${flag#-L} ;;
4492             -Wl,*)                ;;
4493             *)                    echo $flag ;;
4494         esac
4495     done
4496 }
4497
4498 msvc_flags(){
4499     msvc_common_flags "$@"
4500     for flag; do
4501         case $flag in
4502             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4503                                        -wd4554 ;;
4504             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4505                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4506                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4507                                        -wd4307 \
4508                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4509         esac
4510     done
4511 }
4512
4513 icl_flags(){
4514     msvc_common_flags "$@"
4515     for flag; do
4516         case $flag in
4517             # Despite what Intel's documentation says -Wall, which is supported
4518             # on Windows, does enable remarks so disable them here.
4519             -Wall)                echo $flag -Qdiag-disable:remark ;;
4520             -std=c99)             echo -Qstd=c99 ;;
4521             -flto)                echo -ipo ;;
4522         esac
4523     done
4524 }
4525
4526 icc_flags(){
4527     for flag; do
4528         case $flag in
4529             -flto)                echo -ipo ;;
4530             *)                    echo $flag ;;
4531         esac
4532     done
4533 }
4534
4535 suncc_flags(){
4536     for flag; do
4537         case $flag in
4538             -march=*|-mcpu=*)
4539                 case "${flag#*=}" in
4540                     native)                   echo -xtarget=native       ;;
4541                     v9|niagara)               echo -xarch=sparc          ;;
4542                     ultrasparc)               echo -xarch=sparcvis       ;;
4543                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4544                     i586|pentium)             echo -xchip=pentium        ;;
4545                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4546                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4547                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4548                     pentium4*)          echo -xtarget=pentium4           ;;
4549                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4550                     *-sse3)             echo -xarch=sse3                 ;;
4551                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4552                     bonnell)                   echo -xarch=ssse3         ;;
4553                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4554                     westmere)                  echo -xtarget=westmere    ;;
4555                     silvermont)                echo -xarch=sse4_2        ;;
4556                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4557                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4558                                                echo -xarch=avx           ;;
4559                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4560                     btver1)                    echo -xarch=amdsse4a      ;;
4561                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4562                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4563                     k8|opteron|athlon64|athlon-fx)
4564                                                echo -xarch=sse2a         ;;
4565                     athlon*)                   echo -xarch=pentium_proa  ;;
4566                 esac
4567                 ;;
4568             -std=c99)             echo -xc99              ;;
4569             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4570             -fPIC)                echo -KPIC -xcode=pic32 ;;
4571             -W*,*)                echo $flag              ;;
4572             -f*-*|-W*|-mimpure-text)                      ;;
4573             -shared)              echo -G                 ;;
4574             *)                    echo $flag              ;;
4575         esac
4576     done
4577 }
4578
4579 probe_cc(){
4580     pfx=$1
4581     _cc=$2
4582     first=$3
4583
4584     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4585     unset _ld_o _ldflags _ld_lib _ld_path
4586     unset _depflags _DEPCMD _DEPFLAGS
4587     _flags_filter=echo
4588
4589     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4590         true # no-op to avoid reading stdin in following checks
4591     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4592         _type=llvm_gcc
4593         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4594         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4595         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4596         _cflags_speed='-O3'
4597         _cflags_size='-Os'
4598     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4599         _type=gcc
4600         gcc_version=$($_cc --version | head -n1)
4601         gcc_basever=$($_cc -dumpversion)
4602         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4603         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4604         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4605         case $gcc_basever in
4606             2) ;;
4607             2.*) ;;
4608             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4609         esac
4610         if [ "$first" = true ]; then
4611             case $gcc_basever in
4612                 4.2*)
4613                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4614             esac
4615         fi
4616         _cflags_speed='-O3'
4617         _cflags_size='-Os'
4618     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4619         _type=icc
4620         _ident=$($_cc --version | head -n1)
4621         _depflags='-MMD'
4622         _cflags_speed='-O3'
4623         _cflags_size='-Os'
4624         _cflags_noopt='-O1'
4625         _flags_filter=icc_flags
4626     elif $_cc -v 2>&1 | grep -q xlc; then
4627         _type=xlc
4628         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4629         _cflags_speed='-O5'
4630         _cflags_size='-O5 -qcompact'
4631     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4632         test -d "$sysroot" || die "No valid sysroot specified."
4633         _type=armcc
4634         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4635         armcc_conf="$PWD/armcc.conf"
4636         $_cc --arm_linux_configure                 \
4637              --arm_linux_config_file="$armcc_conf" \
4638              --configure_sysroot="$sysroot"        \
4639              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4640              die "Error creating armcc configuration file."
4641         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4642         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4643         as_default="${cross_prefix}gcc"
4644         _depflags='-MMD'
4645         _cflags_speed='-O3'
4646         _cflags_size='-Os'
4647     elif $_cc -v 2>&1 | grep -q clang && ! $_cc -? > /dev/null 2>&1; then
4648         _type=clang
4649         _ident=$($_cc --version 2>/dev/null | head -n1)
4650         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4651         _cflags_speed='-O3'
4652         _cflags_size='-Oz'
4653     elif $_cc -V 2>&1 | grep -q Sun; then
4654         _type=suncc
4655         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4656         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4657         _DEPFLAGS='-xM1 -xc99'
4658         _ldflags='-std=c99'
4659         _cflags_speed='-O5'
4660         _cflags_size='-O5 -xspace'
4661         _flags_filter=suncc_flags
4662     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4663         _type=pathscale
4664         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4665         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4666         _cflags_speed='-O2'
4667         _cflags_size='-Os'
4668         _flags_filter='filter_out -Wdisabled-optimization'
4669     elif $_cc -v 2>&1 | grep -q Open64; then
4670         _type=open64
4671         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4672         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4673         _cflags_speed='-O2'
4674         _cflags_size='-Os'
4675         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4676     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4677         _type=armasm
4678         _ident=$($_cc | head -n1)
4679         # 4509: "This form of conditional instruction is deprecated"
4680         _flags="-nologo -ignore 4509"
4681         _flags_filter=armasm_flags
4682     elif $_cc 2>&1 | grep -q Intel; then
4683         _type=icl
4684         _ident=$($_cc 2>&1 | head -n1)
4685         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4686         # Not only is O3 broken on 13.x+ but it is slower on all previous
4687         # versions (tested) as well.
4688         _cflags_speed="-O2"
4689         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4690         if $_cc 2>&1 | grep -q Linker; then
4691             _ld_o='-out:$@'
4692         else
4693             _ld_o='-Fe$@'
4694         fi
4695         _cc_o='-Fo$@'
4696         _cc_e='-P'
4697         _flags_filter=icl_flags
4698         _ld_lib='lib%.a'
4699         _ld_path='-libpath:'
4700         # -Qdiag-error to make icl error when seeing certain unknown arguments
4701         _flags='-nologo -Qdiag-error:4044,10157'
4702         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4703         # with MSVC which enables it by default.
4704         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4705         disable stripping
4706     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4707         # lld can emulate multiple different linkers; in ms link.exe mode,
4708         # the -? parameter gives the help output which contains an identifyable
4709         # string, while it gives an error in other modes.
4710         _type=lld-link
4711         # The link.exe mode doesn't have a switch for getting the version,
4712         # but we can force it back to gnu mode and get the version from there.
4713         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4714         _ld_o='-out:$@'
4715         _flags_filter=msvc_flags
4716         _ld_lib='lib%.a'
4717         _ld_path='-libpath:'
4718     elif $_cc -nologo- 2>&1 | grep -q Microsoft || { $_cc -v 2>&1 | grep -q clang && $_cc -? > /dev/null 2>&1; }; then
4719         _type=msvc
4720         if $_cc -nologo- 2>&1 | grep -q Microsoft; then
4721             _ident=$($_cc 2>&1 | head -n1 | tr -d '\r')
4722         else
4723             _ident=$($_cc --version 2>/dev/null | head -n1 | tr -d '\r')
4724         fi
4725         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4726         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4727         _cflags_speed="-O2"
4728         _cflags_size="-O1"
4729         _cflags_noopt="-O1"
4730         if $_cc -nologo- 2>&1 | grep -q Linker; then
4731             _ld_o='-out:$@'
4732         else
4733             _ld_o='-Fe$@'
4734         fi
4735         _cc_o='-Fo$@'
4736         _cc_e='-P -Fi$@'
4737         _flags_filter=msvc_flags
4738         _ld_lib='lib%.a'
4739         _ld_path='-libpath:'
4740         _flags='-nologo'
4741         disable stripping
4742     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4743         _type=cparser
4744         _ident=$($_cc --version | head -n1)
4745         _depflags='-MMD'
4746         _cflags_speed='-O4'
4747         _cflags_size='-O2'
4748         _flags_filter=cparser_flags
4749     fi
4750
4751     eval ${pfx}_type=\$_type
4752     eval ${pfx}_ident=\$_ident
4753 }
4754
4755 set_ccvars(){
4756     eval ${1}_C=\${_cc_c-\${${1}_C}}
4757     eval ${1}_E=\${_cc_e-\${${1}_E}}
4758     eval ${1}_O=\${_cc_o-\${${1}_O}}
4759
4760     if [ -n "$_depflags" ]; then
4761         eval ${1}_DEPFLAGS=\$_depflags
4762     else
4763         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4764         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4765         eval DEP${1}FLAGS=\$_flags
4766     fi
4767 }
4768
4769 probe_cc cc "$cc" "true"
4770 cflags_filter=$_flags_filter
4771 cflags_speed=$_cflags_speed
4772 cflags_size=$_cflags_size
4773 cflags_noopt=$_cflags_noopt
4774 add_cflags $_flags $_cflags
4775 cc_ldflags=$_ldflags
4776 set_ccvars CC
4777 set_ccvars CXX
4778
4779 probe_cc hostcc "$host_cc"
4780 host_cflags_filter=$_flags_filter
4781 host_cflags_speed=$_cflags_speed
4782 add_host_cflags  $_flags $_cflags
4783 set_ccvars HOSTCC
4784
4785 test -n "$cc_type" && enable $cc_type ||
4786     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4787
4788 : ${as_default:=$cc}
4789 : ${objcc_default:=$cc}
4790 : ${dep_cc_default:=$cc}
4791 : ${ld_default:=$cc}
4792 : ${host_ld_default:=$host_cc}
4793 set_default ar as objcc dep_cc ld ln_s host_ld windres
4794
4795 probe_cc as "$as"
4796 asflags_filter=$_flags_filter
4797 add_asflags $_flags $_cflags
4798 set_ccvars AS
4799
4800 probe_cc objcc "$objcc"
4801 objcflags_filter=$_flags_filter
4802 add_objcflags $_flags $_cflags
4803 set_ccvars OBJC
4804
4805 probe_cc ld "$ld"
4806 ldflags_filter=$_flags_filter
4807 add_ldflags $_flags $_ldflags
4808 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4809 LD_O=${_ld_o-$LD_O}
4810 LD_LIB=${_ld_lib-$LD_LIB}
4811 LD_PATH=${_ld_path-$LD_PATH}
4812
4813 probe_cc hostld "$host_ld"
4814 host_ldflags_filter=$_flags_filter
4815 add_host_ldflags $_flags $_ldflags
4816 HOSTLD_O=${_ld_o-$HOSTLD_O}
4817
4818 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4819     probe_cc depcc "$dep_cc"
4820     CCDEP=${_DEPCMD:-$DEPCMD}
4821     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4822     DEPCCFLAGS=$_flags
4823 fi
4824
4825 if $ar 2>&1 | grep -q Microsoft; then
4826     arflags="-nologo"
4827     ar_o='-out:$@'
4828 elif $ar 2>&1 | grep -q "\[D\] "; then
4829     arflags="rcD"
4830     ar_o='$@'
4831 else
4832     arflags="rc"
4833     ar_o='$@'
4834 fi
4835
4836 add_cflags $extra_cflags
4837 add_cxxflags $extra_cxxflags
4838 add_objcflags $extra_objcflags
4839 add_asflags $extra_cflags
4840
4841 if test -n "$sysroot"; then
4842     case "$cc_type" in
4843         gcc|llvm_gcc|clang)
4844             add_cppflags --sysroot="$sysroot"
4845             add_ldflags --sysroot="$sysroot"
4846         ;;
4847     esac
4848 fi
4849
4850 if test "$cpu" = host; then
4851     enabled cross_compile &&
4852         warn "--cpu=host makes no sense when cross-compiling."
4853
4854     case "$cc_type" in
4855         gcc|llvm_gcc)
4856             check_native(){
4857                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4858                 sed -n "/cc1.*$1=/{
4859                             s/.*$1=\\([^ ]*\\).*/\\1/
4860                             p
4861                             q
4862                         }" $TMPE
4863             }
4864             cpu=$(check_native -march || check_native -mcpu)
4865         ;;
4866         clang)
4867             check_native(){
4868                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4869                 sed -n "/cc1.*-target-cpu /{
4870                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4871                             p
4872                             q
4873                         }" $TMPE
4874             }
4875             cpu=$(check_native -march)
4876         ;;
4877     esac
4878
4879     test "${cpu:-host}" = host &&
4880         die "--cpu=host not supported with compiler $cc"
4881 fi
4882
4883 # Deal with common $arch aliases
4884 case "$arch" in
4885     aarch64|arm64)
4886         arch="aarch64"
4887     ;;
4888     arm*|iPad*|iPhone*)
4889         arch="arm"
4890     ;;
4891     mips*|IP*)
4892         case "$arch" in
4893         *el)
4894             add_cppflags -EL
4895             add_ldflags -EL
4896         ;;
4897         *eb)
4898             add_cppflags -EB
4899             add_ldflags -EB
4900         ;;
4901         esac
4902         arch="mips"
4903     ;;
4904     parisc*|hppa*)
4905         arch="parisc"
4906     ;;
4907     "Power Macintosh"|ppc*|powerpc*)
4908         arch="ppc"
4909     ;;
4910     s390|s390x)
4911         arch="s390"
4912     ;;
4913     sh4|sh)
4914         arch="sh4"
4915     ;;
4916     sun4*|sparc*)
4917         arch="sparc"
4918     ;;
4919     tilegx|tile-gx)
4920         arch="tilegx"
4921     ;;
4922     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4923         arch="x86"
4924     ;;
4925 esac
4926
4927 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4928 enable $arch
4929
4930 # Add processor-specific flags
4931 if enabled aarch64; then
4932
4933     case $cpu in
4934         armv*)
4935             cpuflags="-march=$cpu"
4936         ;;
4937         *)
4938             cpuflags="-mcpu=$cpu"
4939         ;;
4940     esac
4941
4942 elif enabled alpha; then
4943
4944     cpuflags="-mcpu=$cpu"
4945
4946 elif enabled arm; then
4947
4948     check_arm_arch() {
4949         test_cpp_condition stddef.h \
4950             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4951             $cpuflags
4952     }
4953
4954     probe_arm_arch() {
4955         if   check_arm_arch 4;        then echo armv4
4956         elif check_arm_arch 4T;       then echo armv4t
4957         elif check_arm_arch 5;        then echo armv5
4958         elif check_arm_arch 5E;       then echo armv5e
4959         elif check_arm_arch 5T;       then echo armv5t
4960         elif check_arm_arch 5TE;      then echo armv5te
4961         elif check_arm_arch 5TEJ;     then echo armv5te
4962         elif check_arm_arch 6;        then echo armv6
4963         elif check_arm_arch 6J;       then echo armv6j
4964         elif check_arm_arch 6K;       then echo armv6k
4965         elif check_arm_arch 6Z;       then echo armv6z
4966         elif check_arm_arch 6KZ;      then echo armv6zk
4967         elif check_arm_arch 6ZK;      then echo armv6zk
4968         elif check_arm_arch 6T2;      then echo armv6t2
4969         elif check_arm_arch 7;        then echo armv7
4970         elif check_arm_arch 7A  7_A;  then echo armv7-a
4971         elif check_arm_arch 7S;       then echo armv7-a
4972         elif check_arm_arch 7R  7_R;  then echo armv7-r
4973         elif check_arm_arch 7M  7_M;  then echo armv7-m
4974         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4975         elif check_arm_arch 8A  8_A;  then echo armv8-a
4976         fi
4977     }
4978
4979     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4980
4981     case $cpu in
4982         armv*)
4983             cpuflags="-march=$cpu"
4984             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4985         ;;
4986         *)
4987             cpuflags="-mcpu=$cpu"
4988             case $cpu in
4989                 cortex-a*)                               subarch=armv7a  ;;
4990                 cortex-r*)                               subarch=armv7r  ;;
4991                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4992                 arm11*)                                  subarch=armv6   ;;
4993                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4994                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4995                 *)                             subarch=$(probe_arm_arch) ;;
4996             esac
4997         ;;
4998     esac
4999
5000     case "$subarch" in
5001         armv5t*)    enable fast_clz                ;;
5002         armv[6-8]*)
5003             enable fast_clz
5004             disabled fast_unaligned || enable fast_unaligned
5005             ;;
5006     esac
5007
5008 elif enabled avr32; then
5009
5010     case $cpu in
5011         ap7[02]0[0-2])
5012             subarch="avr32_ap"
5013             cpuflags="-mpart=$cpu"
5014         ;;
5015         ap)
5016             subarch="avr32_ap"
5017             cpuflags="-march=$cpu"
5018         ;;
5019         uc3[ab]*)
5020             subarch="avr32_uc"
5021             cpuflags="-mcpu=$cpu"
5022         ;;
5023         uc)
5024             subarch="avr32_uc"
5025             cpuflags="-march=$cpu"
5026         ;;
5027     esac
5028
5029 elif enabled bfin; then
5030
5031     cpuflags="-mcpu=$cpu"
5032
5033 elif enabled mips; then
5034
5035     if [ "$cpu" != "generic" ]; then
5036         disable mips32r2
5037         disable mips32r5
5038         disable mips64r2
5039         disable mips32r6
5040         disable mips64r6
5041         disable loongson2
5042         disable loongson3
5043         disable mipsdsp
5044         disable mipsdspr2
5045
5046         cpuflags="-march=$cpu"
5047
5048         case $cpu in
5049             # General ISA levels
5050             mips1|mips3)
5051             ;;
5052             mips32r2)
5053                 enable mips32r2
5054             ;;
5055             mips32r5)
5056                 enable mips32r2
5057                 enable mips32r5
5058             ;;
5059             mips64r2|mips64r5)
5060                 enable mips64r2
5061                 enable loongson3
5062             ;;
5063             # Cores from MIPS(MTI)
5064             24kc)
5065                 disable mipsfpu
5066                 enable mips32r2
5067             ;;
5068             24kf*|24kec|34kc|74Kc|1004kc)
5069                 enable mips32r2
5070             ;;
5071             24kef*|34kf*|1004kf*)
5072                 enable mipsdsp
5073                 enable mips32r2
5074             ;;
5075             p5600)
5076                 enable mips32r2
5077                 enable mips32r5
5078                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
5079             ;;
5080             i6400)
5081                 enable mips64r6
5082                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
5083             ;;
5084             p6600)
5085                 enable mips64r6
5086                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
5087             ;;
5088             # Cores from Loongson
5089             loongson2e|loongson2f|loongson3*)
5090                 enable local_aligned
5091                 enable simd_align_16
5092                 enable fast_64bit
5093                 enable fast_clz
5094                 enable fast_cmov
5095                 enable fast_unaligned
5096                 disable aligned_stack
5097                 # When gcc version less than 5.3.0, add -fno-expensive-optimizations flag.
5098                 if test "$cc_type" = "gcc"; then
5099                     case $gcc_basever in
5100                         2|2.*|3.*|4.*|5.0|5.1|5.2)
5101                         expensive_optimization_flag="-fno-expensive-optimizations"
5102                         ;;
5103                         *)
5104                         expensive_optimization_flag=""
5105                         ;;
5106                     esac
5107                 fi
5108
5109                 case $cpu in
5110                     loongson3*)
5111                         enable loongson3
5112                         cpuflags="-march=loongson3a -mhard-float $expensive_optimization_flag"
5113                     ;;
5114                     loongson2e)
5115                         enable loongson2
5116                         cpuflags="-march=loongson2e -mhard-float $expensive_optimization_flag"
5117                     ;;
5118                     loongson2f)
5119                         enable loongson2
5120                         cpuflags="-march=loongson2f -mhard-float $expensive_optimization_flag"
5121                     ;;
5122                 esac
5123             ;;
5124             *)
5125                 warn "unknown MIPS CPU"
5126             ;;
5127         esac
5128
5129     else
5130         disable mipsdsp
5131         disable mipsdspr2
5132         # Disable DSP stuff for generic CPU, it can't be detected at runtime.
5133         warn 'generic cpu selected'
5134     fi
5135
5136 elif enabled ppc; then
5137
5138     disable ldbrx
5139
5140     case $(tolower $cpu) in
5141         601|ppc601|powerpc601)
5142             cpuflags="-mcpu=601"
5143             disable altivec
5144         ;;
5145         603*|ppc603*|powerpc603*)
5146             cpuflags="-mcpu=603"
5147             disable altivec
5148         ;;
5149         604*|ppc604*|powerpc604*)
5150             cpuflags="-mcpu=604"
5151             disable altivec
5152         ;;
5153         g3|75*|ppc75*|powerpc75*)
5154             cpuflags="-mcpu=750"
5155             disable altivec
5156         ;;
5157         g4|745*|ppc745*|powerpc745*)
5158             cpuflags="-mcpu=7450"
5159             disable vsx
5160         ;;
5161         74*|ppc74*|powerpc74*)
5162             cpuflags="-mcpu=7400"
5163             disable vsx
5164         ;;
5165         g5|970|ppc970|powerpc970)
5166             cpuflags="-mcpu=970"
5167             disable vsx
5168         ;;
5169         power[3-6]*)
5170             cpuflags="-mcpu=$cpu"
5171             disable vsx
5172         ;;
5173         power[7-8]*)
5174             cpuflags="-mcpu=$cpu"
5175         ;;
5176         cell)
5177             cpuflags="-mcpu=cell"
5178             enable ldbrx
5179             disable vsx
5180         ;;
5181         e500mc)
5182             cpuflags="-mcpu=e500mc"
5183             disable altivec
5184         ;;
5185         e500v2)
5186             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
5187             disable altivec
5188             disable dcbzl
5189         ;;
5190         e500)
5191             cpuflags="-mcpu=8540 -mhard-float"
5192             disable altivec
5193             disable dcbzl
5194         ;;
5195     esac
5196
5197 elif enabled sparc; then
5198
5199     case $cpu in
5200         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
5201             cpuflags="-mcpu=$cpu"
5202         ;;
5203         ultrasparc*|niagara[234])
5204             cpuflags="-mcpu=$cpu"
5205         ;;
5206     esac
5207
5208 elif enabled x86; then
5209
5210     case $cpu in
5211         i[345]86|pentium)
5212             cpuflags="-march=$cpu"
5213             disable i686
5214             disable mmx
5215         ;;
5216         # targets that do NOT support nopl and conditional mov (cmov)
5217         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
5218             cpuflags="-march=$cpu"
5219             disable i686
5220         ;;
5221         # targets that do support nopl and conditional mov (cmov)
5222         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
5223         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
5224         |amdfam10|barcelona|b[dt]ver*|znver*)
5225             cpuflags="-march=$cpu"
5226             enable i686
5227             enable fast_cmov
5228         ;;
5229         # targets that do support conditional mov but on which it's slow
5230         pentium4|pentium4m|prescott|nocona)
5231             cpuflags="-march=$cpu"
5232             enable i686
5233             disable fast_cmov
5234         ;;
5235     esac
5236
5237 fi
5238
5239 if [ "$cpu" != generic ]; then
5240     add_cflags  $cpuflags
5241     add_asflags $cpuflags
5242     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
5243 fi
5244
5245 # compiler sanity check
5246 test_exec <<EOF
5247 int main(void){ return 0; }
5248 EOF
5249 if test "$?" != 0; then
5250     echo "$cc is unable to create an executable file."
5251     if test -z "$cross_prefix" && ! enabled cross_compile ; then
5252         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
5253         echo "Only do this if you know what cross compiling means."
5254     fi
5255     die "C compiler test failed."
5256 fi
5257
5258 add_cppflags -D_ISOC99_SOURCE
5259 add_cxxflags -D__STDC_CONSTANT_MACROS
5260 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
5261
5262 # some compilers silently accept -std=c11, so we also need to check that the
5263 # version macro is defined properly
5264 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
5265     add_cflags -std=c11 ||
5266     check_cflags -std=c99
5267
5268 check_cppflags -D_FILE_OFFSET_BITS=64
5269 check_cppflags -D_LARGEFILE_SOURCE
5270
5271 add_host_cppflags -D_ISOC99_SOURCE
5272 check_host_cflags -std=c99
5273 check_host_cflags -Wall
5274 check_host_cflags $host_cflags_speed
5275
5276 check_64bit(){
5277     arch32=$1
5278     arch64=$2
5279     expr=${3:-'sizeof(void *) > 4'}
5280     test_code cc "" "int test[2*($expr) - 1]" &&
5281         subarch=$arch64 || subarch=$arch32
5282     enable $subarch
5283 }
5284
5285 case "$arch" in
5286     aarch64|alpha|ia64)
5287         enabled shared && enable_weak pic
5288     ;;
5289     mips)
5290         check_64bit mips mips64 '_MIPS_SIM > 1'
5291         enabled shared && enable_weak pic
5292     ;;
5293     parisc)
5294         check_64bit parisc parisc64
5295         enabled shared && enable_weak pic
5296     ;;
5297     ppc)
5298         check_64bit ppc ppc64
5299         enabled shared && enable_weak pic
5300     ;;
5301     s390)
5302         check_64bit s390 s390x
5303         enabled shared && enable_weak pic
5304     ;;
5305     sparc)
5306         check_64bit sparc sparc64
5307         enabled shared && enable_weak pic
5308     ;;
5309     x86)
5310         check_64bit x86_32 x86_64
5311         # Treat x32 as x64 for now. Note it also needs pic if shared
5312         test "$subarch" = "x86_32" && test_cpp_condition stddef.h 'defined(__x86_64__)' &&
5313             subarch=x86_64 && enable x86_64 && disable x86_32
5314         if enabled x86_64; then
5315             enabled shared && enable_weak pic
5316             objformat=elf64
5317         fi
5318     ;;
5319 esac
5320
5321 # OS specific
5322 case $target_os in
5323     aix)
5324         SHFLAGS=-shared
5325         add_cppflags '-I\$(SRC_PATH)/compat/aix'
5326         enabled shared && add_ldflags -Wl,-brtl
5327         arflags='-Xany -r -c'
5328         striptype=""
5329         ;;
5330     android)
5331         disable symver
5332         enable section_data_rel_ro
5333         add_cflags -fPIE
5334         add_ldexeflags -fPIE -pie
5335         SLIB_INSTALL_NAME='$(SLIBNAME)'
5336         SLIB_INSTALL_LINKS=
5337         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
5338         ;;
5339     haiku)
5340         prefix_default="/boot/common"
5341         network_extralibs="-lnetwork"
5342         host_extralibs=
5343         ;;
5344     sunos)
5345         SHFLAGS='-shared -Wl,-h,$$(@F)'
5346         enabled x86 && append SHFLAGS -mimpure-text
5347         network_extralibs="-lsocket -lnsl"
5348         add_cppflags -D__EXTENSIONS__
5349         # When using suncc to build, the Solaris linker will mark
5350         # an executable with each instruction set encountered by
5351         # the Solaris assembler.  As our libraries contain their own
5352         # guards for processor-specific code, instead suppress
5353         # generation of the HWCAPS ELF section on Solaris x86 only.
5354         enabled_all suncc x86 &&
5355             echo "hwcap_1 = OVERRIDE;" > mapfile &&
5356             add_ldflags -Wl,-M,mapfile
5357         nm_default='nm -P -g'
5358         striptype=""
5359         version_script='-M'
5360         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
5361         ;;
5362     netbsd)
5363         disable symver
5364         oss_indev_extralibs="-lossaudio"
5365         oss_outdev_extralibs="-lossaudio"
5366         enabled gcc || check_ldflags -Wl,-zmuldefs
5367         ;;
5368     openbsd|bitrig)
5369         disable symver
5370         enable section_data_rel_ro
5371         striptype=""
5372         SHFLAGS='-shared'
5373         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
5374         SLIB_INSTALL_LINKS=
5375         oss_indev_extralibs="-lossaudio"
5376         oss_outdev_extralibs="-lossaudio"
5377         ;;
5378     dragonfly)
5379         disable symver
5380         ;;
5381     freebsd)
5382         ;;
5383     bsd/os)
5384         add_extralibs -lpoll -lgnugetopt
5385         strip="strip -d"
5386         ;;
5387     darwin)
5388         enabled ppc && add_asflags -force_cpusubtype_ALL
5389         install_name_dir_default='$(SHLIBDIR)'
5390         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
5391         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
5392         strip="${strip} -x"
5393         add_ldflags -Wl,-dynamic,-search_paths_first
5394         check_cflags -Werror=partial-availability
5395         SLIBSUF=".dylib"
5396         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
5397         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
5398         enabled x86_64 && objformat="macho64" || objformat="macho32"
5399         enabled_any pic shared x86_64 ||
5400             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
5401         check_headers dispatch/dispatch.h &&
5402             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
5403         if test -n "$sysroot"; then
5404             is_in -isysroot $cc $CPPFLAGS $CFLAGS || check_cppflags -isysroot $sysroot
5405             is_in -isysroot $ld $LDFLAGS          || check_ldflags  -isysroot $sysroot
5406         fi
5407         version_script='-exported_symbols_list'
5408         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
5409         # Workaround for Xcode 11 -fstack-check bug
5410         if enabled clang; then
5411             clang_version=$($cc -dumpversion)
5412             test ${clang_version%%.*} -eq 11 && add_cflags -fno-stack-check
5413         fi
5414         ;;
5415     msys*)
5416         die "Native MSYS builds are discouraged, please use the MINGW environment."
5417         ;;
5418     mingw32*|mingw64*)
5419         target_os=mingw32
5420         LIBTARGET=i386
5421         if enabled x86_64; then
5422             LIBTARGET="i386:x86-64"
5423         elif enabled arm; then
5424             LIBTARGET="arm"
5425         elif enabled aarch64; then
5426             LIBTARGET="arm64"
5427         fi
5428         if enabled shared; then
5429             # Cannot build both shared and static libs when using dllimport.
5430             disable static
5431         fi
5432         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5433         enabled x86_32 && check_ldflags -Wl,--large-address-aware
5434         shlibdir_default="$bindir_default"
5435         SLIBPREF=""
5436         SLIBSUF=".dll"
5437         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5438         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5439         if test_cmd lib.exe -list; then
5440             SLIB_EXTRA_CMD=-'lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5441             if enabled x86_64; then
5442                 LIBTARGET=x64
5443             fi
5444         else
5445             SLIB_EXTRA_CMD=-'$(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
5446         fi
5447         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5448         SLIB_INSTALL_LINKS=
5449         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5450         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5451         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" AR="$(AR_CMD)" NM="$(NM_CMD)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5452         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--disable-auto-image-base $$(@:$(SLIBSUF)=.def)'
5453         enabled x86_64 && objformat="win64" || objformat="win32"
5454         dlltool="${cross_prefix}dlltool"
5455         ranlib=:
5456         enable dos_paths
5457         check_ldflags -Wl,--nxcompat,--dynamicbase
5458         # Lets work around some stupidity in binutils.
5459         # ld will strip relocations from executables even though we need them
5460         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
5461         # however ld then forgets what the entry point should be (oops) so we
5462         # have to manually (re)set it.
5463         if enabled x86_32; then
5464             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
5465         elif enabled x86_64; then
5466             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
5467             check_ldflags -Wl,--high-entropy-va # binutils 2.25
5468             # Set image base >4GB for extra entropy with HEASLR
5469             add_ldexeflags -Wl,--image-base,0x140000000
5470             append SHFLAGS -Wl,--image-base,0x180000000
5471         fi
5472         ;;
5473     win32|win64)
5474         disable symver
5475         if enabled shared; then
5476             # Link to the import library instead of the normal static library
5477             # for shared libs.
5478             LD_LIB='%.lib'
5479             # Cannot build both shared and static libs with MSVC or icl.
5480             disable static
5481         fi
5482         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
5483         shlibdir_default="$bindir_default"
5484         SLIBPREF=""
5485         SLIBSUF=".dll"
5486         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5487         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5488         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5489         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5490         SLIB_INSTALL_LINKS=
5491         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5492         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5493         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5494         enabled x86_64 && objformat="win64" || objformat="win32"
5495         ranlib=:
5496         enable dos_paths
5497         ;;
5498     cygwin*)
5499         target_os=cygwin
5500         shlibdir_default="$bindir_default"
5501         SLIBPREF="cyg"
5502         SLIBSUF=".dll"
5503         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5504         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5505         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5506         SLIB_INSTALL_LINKS=
5507         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
5508         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
5509         enabled x86_64 && objformat="win64" || objformat="win32"
5510         enable dos_paths
5511         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5512         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5513         ;;
5514     *-dos|freedos|opendos)
5515         network_extralibs="-lsocket"
5516         objformat="coff"
5517         enable dos_paths
5518         ;;
5519     linux)
5520         enable section_data_rel_ro
5521         enabled_any arm aarch64 && enable_weak linux_perf
5522         ;;
5523     irix*)
5524         target_os=irix
5525         ranlib="echo ignoring ranlib"
5526         ;;
5527     os/2*)
5528         strip="lxlite -CS"
5529         striptype=""
5530         objformat="aout"
5531         add_cppflags -D_GNU_SOURCE
5532         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
5533         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
5534         LIBSUF="_s.a"
5535         SLIBPREF=""
5536         SLIBSUF=".dll"
5537         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5538         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
5539         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
5540             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
5541             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
5542             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
5543             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
5544         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
5545             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
5546         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5547         SLIB_INSTALL_LINKS=
5548         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
5549         enable dos_paths
5550         enable_weak os2threads
5551         ;;
5552     gnu/kfreebsd)
5553         add_cppflags -D_BSD_SOURCE
5554         ;;
5555     gnu)
5556         ;;
5557     qnx)
5558         add_cppflags -D_QNX_SOURCE
5559         network_extralibs="-lsocket"
5560         ;;
5561     symbian)
5562         SLIBSUF=".dll"
5563         enable dos_paths
5564         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
5565         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
5566         add_ldflags -Wl,--target1-abs,--no-undefined \
5567                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
5568                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
5569         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
5570                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
5571                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
5572         ;;
5573     minix)
5574         ;;
5575     none)
5576         ;;
5577     *)
5578         die "Unknown OS '$target_os'."
5579         ;;
5580 esac
5581
5582 # test if creating links works
5583 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5584 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5585 mkdir "$link_dest"
5586 $ln_s "$link_dest" "$link_name"
5587 touch "$link_dest/test_file"
5588 if [ "$source_path" != "." ] && [ "$source_path" != "src" ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5589     # create link to source path
5590     [ -e src ] && rm src
5591     $ln_s "$source_path" src
5592     source_link=src
5593 else
5594     # creating directory links doesn't work
5595     # fall back to using the full source path
5596     source_link="$source_path"
5597 fi
5598 # cleanup
5599 rm -r "$link_dest"
5600 rm -r "$link_name"
5601
5602 # determine libc flavour
5603
5604 probe_libc(){
5605     pfx=$1
5606     pfx_no_=${pfx%_}
5607     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5608     if test_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5609         eval ${pfx}libc_type=uclibc
5610         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5611     elif test_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5612         eval ${pfx}libc_type=glibc
5613         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5614     # MinGW headers can be installed on Cygwin, so check for newlib first.
5615     elif test_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5616         eval ${pfx}libc_type=newlib
5617         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
5618     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5619     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5620         eval ${pfx}libc_type=mingw64
5621         if test_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5622             add_compat msvcrt/snprintf.o
5623             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5624         fi
5625         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5626         eval test \$${pfx_no_}cc_type = "gcc" &&
5627             add_${pfx}cppflags -D__printf__=__gnu_printf__
5628         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5629             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5630         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5631     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5632          test_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5633         eval ${pfx}libc_type=mingw32
5634         test_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5635             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5636             die "ERROR: MinGW32 runtime version must be >= 3.15."
5637         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5638         test_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
5639             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5640         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5641             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5642         eval test \$${pfx_no_}cc_type = "gcc" &&
5643             add_${pfx}cppflags -D__printf__=__gnu_printf__
5644         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5645     elif test_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5646         eval ${pfx}libc_type=msvcrt
5647         if test_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5648             if [ "$pfx" = host_ ]; then
5649                 add_host_cppflags -Dsnprintf=_snprintf
5650             else
5651                 add_compat strtod.o strtod=avpriv_strtod
5652                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5653                                              _snprintf=avpriv_snprintf  \
5654                                              vsnprintf=avpriv_vsnprintf
5655             fi
5656         fi
5657         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5658         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5659         # 0x601 by default unless something else is set by the user.
5660         # This can easily lead to us detecting functions only present
5661         # in such new versions and producing binaries requiring windows 7.0.
5662         # Therefore explicitly set the default to Vista unless the user has
5663         # set something else on the command line.
5664         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5665         # family. For these cases, configure is free to use any functions
5666         # found in the SDK headers by default. (Alternatively, we could force
5667         # _WIN32_WINNT to 0x0602 in that case.)
5668         test_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5669             { test_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0600; }
5670 #ifdef WINAPI_FAMILY
5671 #include <winapifamily.h>
5672 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5673 #error not desktop
5674 #endif
5675 #endif
5676 EOF
5677         if [ "$pfx" = "" ]; then
5678             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5679             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5680         fi
5681     elif test_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5682         eval ${pfx}libc_type=klibc
5683     elif test_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5684         eval ${pfx}libc_type=bionic
5685     elif test_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5686         eval ${pfx}libc_type=solaris
5687         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5688     elif test_${pfx}cpp_condition sys/version.h "defined __DJGPP__"; then
5689         eval ${pfx}libc_type=djgpp
5690         add_cppflags -U__STRICT_ANSI__
5691         add_cflags "-include $source_path/compat/djgpp/math.h"
5692         add_compat djgpp/math.o
5693     fi
5694     test_${pfx}cc <<EOF
5695 #include <time.h>
5696 void *v = localtime_r;
5697 EOF
5698 test "$?" != 0 && test_${pfx}cc -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 <<EOF && add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5699 #include <time.h>
5700 void *v = localtime_r;
5701 EOF
5702
5703     eval test -n "\${${pfx}libc_type}" && enable ${pfx}libc_${libc_type}
5704 }
5705
5706 probe_libc
5707 probe_libc host_
5708
5709 # hacks for compiler/libc/os combinations
5710
5711 case $libc_type in
5712     bionic)
5713         add_compat strtod.o strtod=avpriv_strtod
5714         ;;
5715 esac
5716
5717 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5718     add_cppflags '-I\$(SRC_PATH)/compat/float'
5719
5720 test_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5721
5722 set_default libdir
5723 : ${shlibdir_default:="$libdir"}
5724 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5725
5726 set_default $PATHS_LIST
5727 set_default nm
5728
5729 disabled optimizations || enabled ossfuzz || check_cflags -fomit-frame-pointer
5730
5731 enable_weak_pic() {
5732     disabled pic && return
5733     enable pic
5734     add_cppflags -DPIC
5735     case "$target_os" in
5736     mingw*|cygwin*|win*)
5737         ;;
5738     *)
5739         add_cflags -fPIC
5740         add_asflags -fPIC
5741         ;;
5742     esac
5743 }
5744
5745 enabled pic && enable_weak_pic
5746
5747 test_cc <<EOF || die "Symbol mangling check failed."
5748 int ff_extern;
5749 EOF
5750 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5751 extern_prefix=${sym%%ff_extern*}
5752
5753 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
5754
5755 for restrict_keyword in restrict __restrict__ __restrict ""; do
5756     test_code cc "" "char * $restrict_keyword p" && break
5757 done
5758
5759 check_cc pragma_deprecated "" '_Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"")'
5760
5761 # The global variable ensures the bits appear unchanged in the object file.
5762 test_cc <<EOF || die "endian test failed"
5763 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5764 EOF
5765 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5766
5767 check_cc const_nan math.h "struct { double d; } static const bar[] = { { NAN } }"
5768
5769 if ! enabled ppc64 || enabled bigendian; then
5770     disable vsx
5771 fi
5772
5773 check_gas() {
5774     log "check_gas using '$as' as AS"
5775     # :vararg is used on aarch64, arm and ppc altivec
5776     check_as vararg "
5777 .macro m n, y:vararg=0
5778 \n: .int \y
5779 .endm
5780 m x" || return 1
5781     # .altmacro is only used in arm asm
5782     ! enabled arm || check_as gnu_as ".altmacro"
5783 }
5784
5785 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5786     nogas=:
5787     enabled_any arm aarch64 && nogas=die
5788     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5789     as_noop=-v
5790
5791     case $as_type in
5792         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5793         gcc)  gaspp_as_type=gas ;;
5794         *)    gaspp_as_type=$as_type ;;
5795     esac
5796
5797     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5798
5799     test "${as#*gas-preprocessor.pl}" != "$as" ||
5800     test_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5801         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5802
5803     if ! check_gas ; then
5804         as=${gas:=$as}
5805         check_gas || \
5806             $nogas "GNU assembler not found, install/update gas-preprocessor"
5807     fi
5808
5809     check_as as_func ".func test
5810                       .endfunc"
5811 fi
5812
5813 check_inline_asm inline_asm_labels '"1:\n"'
5814
5815 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5816
5817 if enabled aarch64; then
5818     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5819     # internal assembler in clang 3.3 does not support this instruction
5820     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5821     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5822
5823     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5824
5825 elif enabled alpha; then
5826
5827     check_cflags -mieee
5828
5829 elif enabled arm; then
5830
5831     enabled msvc && check_cpp_condition thumb stddef.h "defined _M_ARMT"
5832     test_cpp_condition stddef.h "defined __thumb__" && test_cc <<EOF && enable_weak thumb
5833 float func(float a, float b){ return a+b; }
5834 EOF
5835     enabled thumb && check_cflags -mthumb || check_cflags -marm
5836
5837     if check_cpp_condition vfp_args stddef.h "defined __ARM_PCS_VFP"; then
5838         :
5839     elif check_cpp_condition vfp_args stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5840         :
5841     elif ! test_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5842         case "${cross_prefix:-$cc}" in
5843             *hardfloat*) enable vfp_args; fpabi=vfp ;;
5844             *) check_ld "cc" vfp_args <<EOF && fpabi=vfp || fpabi=soft ;;
5845 __asm__ (".eabi_attribute 28, 1");
5846 int main(void) { return 0; }
5847 EOF
5848         esac
5849         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5850     fi
5851
5852     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5853     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5854     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5855     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5856     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5857     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5858     enabled setend  && check_insn setend  'setend be'
5859
5860     [ $target_os = linux ] || [ $target_os = android ] ||
5861         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5862             $ARCH_EXT_LIST_ARM
5863
5864     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5865
5866     check_as as_arch_directive ".arch armv7-a"
5867     check_as as_dn_directive   "ra .dn d0.i16"
5868     check_as as_fpu_directive  ".fpu neon"
5869
5870     # llvm's integrated assembler supports .object_arch from llvm 3.5
5871     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
5872         check_as as_object_arch ".object_arch armv4"
5873
5874     # MS armasm fails to assemble our PIC constructs
5875     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5876
5877 elif enabled mips; then
5878
5879     # Check toolchain ISA level
5880     if enabled mips64; then
5881         enabled mips64r6 && check_inline_asm mips64r6 '"dlsa $0, $0, $0, 1"' &&
5882             disable mips64r2
5883
5884         enabled mips64r2 && check_inline_asm mips64r2 '"dext $0, $0, 0, 1"'
5885
5886         disable mips32r6 && disable mips32r5 && disable mips32r2
5887     else
5888         enabled mips32r6 && check_inline_asm mips32r6 '"aui $0, $0, 0"' &&
5889             disable mips32r5 && disable mips32r2
5890
5891         enabled mips32r5 && check_inline_asm mips32r5 '"eretnc"'
5892         enabled mips32r2 && check_inline_asm mips32r2 '"ext $0, $0, 0, 1"'
5893
5894         disable mips64r6 && disable mips64r5 && disable mips64r2
5895     fi
5896
5897     enabled mipsfpu && check_inline_asm mipsfpu '"cvt.d.l $f0, $f2"'
5898     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5899
5900     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5901     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5902
5903     # MSA and MSA2 can be detected at runtime so we supply extra flags here
5904     enabled mipsfpu && enabled msa && check_inline_asm msa '"addvi.b $w0, $w1, 1"' '-mmsa' && append MSAFLAGS '-mmsa'
5905     enabled msa && enabled msa2 && check_inline_asm msa2 '"nxbits.any.b $w0, $w0"' '-mmsa2' && append MSAFLAGS '-mmsa2'
5906
5907     # loongson2 have no switch cflag so we can only probe toolchain ability
5908     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"' && disable loongson3
5909
5910     # loongson3 is paired with MMI
5911     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"' '-mloongson-ext' && append MMIFLAGS '-mloongson-ext'
5912
5913     # MMI can be detected at runtime too
5914     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"' '-mloongson-mmi' && append MMIFLAGS '-mloongson-mmi'
5915
5916     if enabled bigendian && enabled msa; then
5917         disable msa
5918     fi
5919
5920 elif enabled parisc; then
5921
5922     if enabled gcc; then
5923         case $($cc -dumpversion) in
5924             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5925         esac
5926     fi
5927
5928 elif enabled ppc; then
5929
5930     enable local_aligned
5931
5932     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5933     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5934     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5935     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5936
5937     if enabled altivec; then
5938         check_cflags -maltivec -mabi=altivec
5939
5940         # check if our compiler supports Motorola AltiVec C API
5941         check_cc altivec altivec.h "vector signed int v1 = (vector signed int) { 0 };
5942                                     vector signed int v2 = (vector signed int) { 1 };
5943                                     v1 = vec_add(v1, v2);"
5944
5945         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5946     fi
5947
5948     if enabled vsx; then
5949         check_cflags -mvsx &&
5950         check_cc vsx altivec.h "int v[4] = { 0 };
5951                                 vector signed int v1 = vec_vsx_ld(0, v);"
5952     fi
5953
5954     if enabled power8; then
5955         check_cpp_condition power8 "altivec.h" "defined(_ARCH_PWR8)"
5956     fi
5957
5958 elif enabled x86; then
5959
5960     check_builtin rdtsc    intrin.h   "__rdtsc()"
5961     check_builtin mm_empty mmintrin.h "_mm_empty()"
5962
5963     enable local_aligned
5964
5965     # check whether EBP is available on x86
5966     # As 'i' is stored on the stack, this program will crash
5967     # if the base pointer is used to access it because the
5968     # base pointer is cleared in the inline assembly code.
5969     check_exec_crash <<EOF && enable ebp_available
5970 volatile int i=0;
5971 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5972 return i;
5973 EOF
5974
5975     # check whether EBX is available on x86
5976     check_inline_asm ebx_available '""::"b"(0)' &&
5977         check_inline_asm ebx_available '"":::"%ebx"'
5978
5979     # check whether xmm clobbers are supported
5980     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5981
5982     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5983         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5984
5985     # check whether binutils is new enough to compile SSSE3/MMXEXT
5986     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5987     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5988
5989     probe_x86asm(){
5990         x86asmexe_probe=$1
5991         if test_cmd $x86asmexe_probe -v; then
5992             x86asmexe=$x86asmexe_probe
5993             x86asm_type=nasm
5994             x86asm_debug="-g -F dwarf"
5995             X86ASMDEP=
5996             X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
5997         elif test_cmd $x86asmexe_probe --version; then
5998             x86asmexe=$x86asmexe_probe
5999             x86asm_type=yasm
6000             x86asm_debug="-g dwarf2"
6001             X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
6002             X86ASM_DEPFLAGS=
6003         fi
6004         check_x86asm x86asm "movbe ecx, [5]"
6005     }
6006
6007     if ! disabled_any asm mmx x86asm; then
6008         disable x86asm
6009         for program in $x86asmexe nasm yasm; do
6010             probe_x86asm $program && break
6011         done
6012         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
6013         X86ASMFLAGS="-f $objformat"
6014         enabled pic               && append X86ASMFLAGS "-DPIC"
6015         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
6016         case "$objformat" in
6017             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
6018         esac
6019
6020         enabled avx512 && check_x86asm avx512_external "vmovdqa32 [eax]{k1}{z}, zmm0"
6021         enabled avx2   && check_x86asm avx2_external   "vextracti128 xmm0, ymm0, 0"
6022         enabled xop    && check_x86asm xop_external    "vpmacsdd xmm0, xmm1, xmm2, xmm3"
6023         enabled fma4   && check_x86asm fma4_external   "vfmaddps ymm0, ymm1, ymm2, ymm3"
6024         check_x86asm cpunop          "CPU amdnop"
6025     fi
6026
6027     case "$cpu" in
6028         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
6029             disable fast_clz
6030         ;;
6031     esac
6032
6033 fi
6034
6035 check_cc intrinsics_neon arm_neon.h "int16x8_t test = vdupq_n_s16(0)"
6036
6037 check_ldflags -Wl,--as-needed
6038 check_ldflags -Wl,-z,noexecstack
6039
6040 if ! disabled network; then
6041     check_func getaddrinfo $network_extralibs
6042     check_func inet_aton $network_extralibs
6043
6044     check_type netdb.h "struct addrinfo"
6045     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
6046     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
6047     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
6048     check_type poll.h "struct pollfd"
6049     check_type netinet/sctp.h "struct sctp_event_subscribe"
6050     check_struct "sys/socket.h" "struct msghdr" msg_flags
6051     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
6052     check_type netinet/in.h "struct sockaddr_in6"
6053     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
6054     check_type "sys/types.h sys/socket.h" socklen_t
6055
6056     # Prefer arpa/inet.h over winsock2
6057     if check_headers arpa/inet.h ; then
6058         check_func closesocket
6059     elif check_headers winsock2.h ; then
6060         check_func_headers winsock2.h closesocket -lws2 &&
6061             network_extralibs="-lws2" ||
6062         { check_func_headers winsock2.h closesocket -lws2_32 &&
6063             network_extralibs="-lws2_32"; } || disable winsock2_h network
6064         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
6065
6066         check_type ws2tcpip.h socklen_t
6067         check_type ws2tcpip.h "struct addrinfo"
6068         check_type ws2tcpip.h "struct group_source_req"
6069         check_type ws2tcpip.h "struct ip_mreq_source"
6070         check_type ws2tcpip.h "struct ipv6_mreq"
6071         check_type winsock2.h "struct pollfd"
6072         check_struct winsock2.h "struct sockaddr" sa_len
6073         check_type ws2tcpip.h "struct sockaddr_in6"
6074         check_type ws2tcpip.h "struct sockaddr_storage"
6075     else
6076         disable network
6077     fi
6078 fi
6079
6080 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
6081 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
6082 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
6083 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
6084 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
6085 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
6086 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
6087
6088 case "$custom_allocator" in
6089     jemalloc)
6090         # jemalloc by default does not use a prefix
6091         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
6092     ;;
6093     tcmalloc)
6094         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
6095         malloc_prefix=tc_
6096     ;;
6097 esac
6098
6099 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
6100 check_func  ${malloc_prefix}memalign            && enable memalign
6101 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
6102
6103 check_func  access
6104 check_func_headers stdlib.h arc4random
6105 check_lib   clock_gettime time.h clock_gettime || check_lib clock_gettime time.h clock_gettime -lrt
6106 check_func  fcntl
6107 check_func  fork
6108 check_func  gethrtime
6109 check_func  getopt
6110 check_func  getrusage
6111 check_func  gettimeofday
6112 check_func  isatty
6113 check_func  mkstemp
6114 check_func  mmap
6115 check_func  mprotect
6116 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
6117 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
6118 check_func  sched_getaffinity
6119 check_func  setrlimit
6120 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
6121 check_func  strerror_r
6122 check_func  sysconf
6123 check_func  sysctl
6124 check_func  usleep
6125
6126 check_func_headers conio.h kbhit
6127 check_func_headers io.h setmode
6128 check_func_headers lzo/lzo1x.h lzo1x_999_compress
6129 check_func_headers mach/mach_time.h mach_absolute_time
6130 check_func_headers stdlib.h getenv
6131 check_func_headers sys/stat.h lstat
6132
6133 check_func_headers windows.h GetModuleHandle
6134 check_func_headers windows.h GetProcessAffinityMask
6135 check_func_headers windows.h GetProcessTimes
6136 check_func_headers windows.h GetStdHandle
6137 check_func_headers windows.h GetSystemTimeAsFileTime
6138 check_func_headers windows.h LoadLibrary
6139 check_func_headers windows.h MapViewOfFile
6140 check_func_headers windows.h PeekNamedPipe
6141 check_func_headers windows.h SetConsoleTextAttribute
6142 check_func_headers windows.h SetConsoleCtrlHandler
6143 check_func_headers windows.h SetDllDirectory
6144 check_func_headers windows.h Sleep
6145 check_func_headers windows.h VirtualAlloc
6146 check_func_headers glob.h glob
6147 enabled xlib &&
6148     check_lib xlib "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
6149
6150 check_headers direct.h
6151 check_headers dirent.h
6152 check_headers dxgidebug.h
6153 check_headers dxva.h
6154 check_headers dxva2api.h -D_WIN32_WINNT=0x0600
6155 check_headers io.h
6156 enabled libdrm &&
6157     check_headers linux/dma-buf.h
6158
6159 check_headers linux/perf_event.h
6160 check_headers libcrystalhd/libcrystalhd_if.h
6161 check_headers malloc.h
6162 check_headers mftransform.h
6163 check_headers net/udplite.h
6164 check_headers poll.h
6165 check_headers sys/param.h
6166 check_headers sys/resource.h
6167 check_headers sys/select.h
6168 check_headers sys/time.h
6169 check_headers sys/un.h
6170 check_headers termios.h
6171 check_headers unistd.h
6172 check_headers valgrind/valgrind.h
6173 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
6174 check_headers windows.h
6175 check_headers X11/extensions/XvMClib.h
6176 check_headers asm/types.h
6177
6178 # it seems there are versions of clang in some distros that try to use the
6179 # gcc headers, which explodes for stdatomic
6180 # so we also check that atomics actually work here
6181 check_builtin stdatomic stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0); foo += bar"
6182
6183 check_lib advapi32 "windows.h"            RegCloseKey          -ladvapi32
6184 check_lib bcrypt   "windows.h bcrypt.h"   BCryptGenRandom      -lbcrypt &&
6185     check_cpp_condition bcrypt bcrypt.h "defined BCRYPT_RNG_ALGORITHM"
6186 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
6187 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
6188 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
6189
6190 check_lib android android/native_window.h ANativeWindow_acquire -landroid
6191 check_lib mediandk "stdint.h media/NdkImage.h" AImage_delete -lmediandk
6192 check_lib camera2ndk "stdbool.h stdint.h camera/NdkCameraManager.h" ACameraManager_create -lcamera2ndk
6193
6194 enabled appkit       && check_apple_framework AppKit
6195 enabled audiotoolbox && check_apple_framework AudioToolbox
6196 enabled avfoundation && check_apple_framework AVFoundation
6197 enabled coreimage    && check_apple_framework CoreImage
6198 enabled videotoolbox && check_apple_framework VideoToolbox
6199
6200 check_apple_framework CoreFoundation
6201 check_apple_framework CoreMedia
6202 check_apple_framework CoreVideo
6203 check_apple_framework CoreAudio
6204
6205 enabled avfoundation && {
6206     disable coregraphics applicationservices
6207     check_lib coregraphics        CoreGraphics/CoreGraphics.h               CGGetActiveDisplayList "-framework CoreGraphics" ||
6208     check_lib applicationservices ApplicationServices/ApplicationServices.h CGGetActiveDisplayList "-framework ApplicationServices"; }
6209
6210 enabled videotoolbox && {
6211     check_lib coreservices CoreServices/CoreServices.h UTGetOSTypeFromString "-framework CoreServices"
6212     check_func_headers CoreMedia/CMFormatDescription.h kCMVideoCodecType_HEVC "-framework CoreMedia"
6213     check_func_headers CoreVideo/CVPixelBuffer.h kCVPixelFormatType_420YpCbCr10BiPlanarVideoRange "-framework CoreVideo"
6214     check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferTransferFunction_SMPTE_ST_2084_PQ "-framework CoreVideo"
6215     check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferTransferFunction_ITU_R_2100_HLG "-framework CoreVideo"
6216     check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferTransferFunction_Linear "-framework CoreVideo"
6217 }
6218
6219 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
6220
6221 check_type "windows.h dxva.h" "DXVA_PicParams_AV1" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
6222 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
6223 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
6224 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
6225 check_type "windows.h d3d11.h" "ID3D11VideoContext"
6226 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
6227 check_func_headers mfapi.h MFCreateAlignedMemoryBuffer -lmfplat
6228
6229 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
6230 check_type "vdpau/vdpau.h" "VdpPictureInfoVP9"
6231
6232 if [ -z "$nvccflags" ]; then
6233     nvccflags=$nvccflags_default
6234 fi
6235
6236 if enabled x86_64 || enabled ppc64 || enabled aarch64; then
6237     nvccflags="$nvccflags -m64"
6238 else
6239     nvccflags="$nvccflags -m32"
6240 fi
6241
6242 if enabled cuda_nvcc; then
6243     nvccflags="$nvccflags -ptx"
6244 else
6245     nvccflags="$nvccflags -S -nocudalib -nocudainc --cuda-device-only -Wno-c++11-narrowing -include ${source_link}/compat/cuda/cuda_runtime.h"
6246     check_nvcc cuda_llvm
6247 fi
6248
6249 if ! disabled ffnvcodec; then
6250     ffnv_hdr_list="ffnvcodec/nvEncodeAPI.h ffnvcodec/dynlink_cuda.h ffnvcodec/dynlink_cuviddec.h ffnvcodec/dynlink_nvcuvid.h"
6251     check_pkg_config ffnvcodec "ffnvcodec >= 9.1.23.1" "$ffnv_hdr_list" "" || \
6252       check_pkg_config ffnvcodec "ffnvcodec >= 9.0.18.3 ffnvcodec < 9.1" "$ffnv_hdr_list" "" || \
6253       check_pkg_config ffnvcodec "ffnvcodec >= 8.2.15.10 ffnvcodec < 8.3" "$ffnv_hdr_list" "" || \
6254       check_pkg_config ffnvcodec "ffnvcodec >= 8.1.24.11 ffnvcodec < 8.2" "$ffnv_hdr_list" ""
6255 fi
6256
6257 check_cpp_condition winrt windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)"
6258
6259 if ! disabled w32threads && ! enabled pthreads; then
6260     check_func_headers "windows.h process.h" _beginthreadex &&
6261         check_type "windows.h" CONDITION_VARIABLE &&
6262         check_type "windows.h" INIT_ONCE &&
6263         enable w32threads || disable w32threads
6264     if ! enabled w32threads && enabled winrt; then
6265         check_func_headers "windows.h" CreateThread &&
6266             enable w32threads || disable w32threads
6267     fi
6268 fi
6269
6270 # check for some common methods of building with pthread support
6271 # do this before the optional library checks as some of them require pthreads
6272 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
6273     if check_lib pthreads pthread.h pthread_join   -pthread &&
6274        check_lib pthreads pthread.h pthread_create -pthread; then
6275         add_cflags -pthread
6276     elif check_lib pthreads pthread.h pthread_join   -pthreads &&
6277          check_lib pthreads pthread.h pthread_create -pthreads; then
6278         add_cflags -pthreads
6279     elif check_lib pthreads pthread.h pthread_join   -ldl -pthread &&
6280          check_lib pthreads pthread.h pthread_create -ldl -pthread; then
6281         add_cflags -ldl -pthread
6282     elif check_lib pthreads pthread.h pthread_join   -lpthreadGC2 &&
6283          check_lib pthreads pthread.h pthread_create -lpthreadGC2; then
6284         :
6285     elif check_lib pthreads pthread.h pthread_join   -lpthread &&
6286          check_lib pthreads pthread.h pthread_create -lpthread; then
6287         :
6288     elif check_func pthread_join && check_func pthread_create; then
6289         enable pthreads
6290     fi
6291     check_cc pthreads "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER"
6292
6293     if enabled pthreads; then
6294         check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
6295         check_func pthread_cancel $pthreads_extralibs
6296     fi
6297 fi
6298
6299 enabled  zlib && { check_pkg_config zlib zlib "zlib.h" zlibVersion ||
6300                    check_lib zlib   zlib.h      zlibVersion    -lz; }
6301 enabled bzlib && check_lib bzlib bzlib.h BZ2_bzlibVersion    -lbz2
6302 enabled  lzma && check_lib lzma   lzma.h lzma_version_number -llzma
6303
6304 # On some systems dynamic loading requires no extra linker flags
6305 check_lib libdl dlfcn.h "dlopen dlsym" || check_lib libdl dlfcn.h "dlopen dlsym" -ldl
6306
6307 check_lib libm math.h sin -lm
6308
6309 atan2f_args=2
6310 copysign_args=2
6311 hypot_args=2
6312 ldexpf_args=2
6313 powf_args=2
6314
6315 for func in $MATH_FUNCS; do
6316     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
6317 done
6318
6319 for func in $COMPLEX_FUNCS; do
6320     eval check_complexfunc $func \${${func}_args:-1}
6321 done
6322
6323 # these are off by default, so fail if requested and not available
6324 enabled avisynth          && require_headers "avisynth/avisynth_c.h"
6325 enabled cuda_nvcc         && { check_nvcc cuda_nvcc || die "ERROR: failed checking for nvcc."; }
6326 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
6327 enabled decklink          && { require_headers DeckLinkAPI.h &&
6328                                { test_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a0a0000" || die "ERROR: Decklink API version must be >= 10.10"; } }
6329 enabled frei0r            && require_headers "frei0r.h dlfcn.h"
6330 enabled gmp               && require gmp gmp.h mpz_export -lgmp
6331 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init
6332 enabled jni               && { [ $target_os = "android" ] && check_headers jni.h && enabled pthreads || die "ERROR: jni not found"; }
6333 enabled ladspa            && require_headers "ladspa.h dlfcn.h"
6334 enabled libaom            && require_pkg_config libaom "aom >= 1.0.0" aom/aom_codec.h aom_codec_version
6335 enabled libaribb24        && { check_pkg_config libaribb24 "aribb24 > 1.0.3" "aribb24/aribb24.h" arib_instance_new ||
6336                                { enabled gpl && require_pkg_config libaribb24 aribb24 "aribb24/aribb24.h" arib_instance_new; } ||
6337                                die "ERROR: libaribb24 requires version higher than 1.0.3 or --enable-gpl."; }
6338 enabled lv2               && require_pkg_config lv2 lilv-0 "lilv/lilv.h" lilv_world_new
6339 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
6340 enabled libass            && require_pkg_config libass libass ass/ass.h ass_library_init
6341 enabled libbluray         && require_pkg_config libbluray libbluray libbluray/bluray.h bd_open
6342 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
6343 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
6344                              { check_lib libcelt celt/celt.h celt_decoder_create_custom -lcelt0 ||
6345                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
6346 enabled libcaca           && require_pkg_config libcaca caca caca.h caca_create_canvas
6347 enabled libcodec2         && require libcodec2 codec2/codec2.h codec2_create -lcodec2
6348 enabled libdav1d          && require_pkg_config libdav1d "dav1d >= 0.5.0" "dav1d/dav1d.h" dav1d_version
6349 enabled libdavs2          && require_pkg_config libdavs2 "davs2 >= 1.6.0" davs2.h davs2_decoder_open
6350 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
6351 enabled libdrm            && require_pkg_config libdrm libdrm xf86drm.h drmGetVersion
6352 enabled libfdk_aac        && { check_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
6353                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
6354                                  warn "using libfdk without pkg-config"; } }
6355 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"
6356 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_extralibs
6357 enabled fontconfig        && enable libfontconfig
6358 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
6359 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
6360 enabled libfribidi        && require_pkg_config libfribidi fribidi fribidi.h fribidi_version_info
6361 enabled libglslang        && require_cpp libglslang glslang/SPIRV/GlslangToSpv.h "glslang::TIntermediate*" -lglslang -lMachineIndependent -lOSDependent -lHLSL -lOGLCompiler -lGenericCodeGen -lSPVRemapper -lSPIRV -lSPIRV-Tools-opt -lSPIRV-Tools -lpthread -lstdc++
6362 enabled libgme            && { check_pkg_config libgme libgme gme/gme.h gme_new_emu ||
6363                                require libgme gme/gme.h gme_new_emu -lgme -lstdc++; }
6364 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
6365                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
6366                                done || die "ERROR: libgsm not found"; }
6367 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc $pthreads_extralibs
6368 enabled libklvanc         && require libklvanc libklvanc/vanc.h klvanc_context_create -lklvanc
6369 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
6370 enabled liblensfun        && require_pkg_config liblensfun lensfun lensfun.h lf_db_new
6371 # While it may appear that require is being used as a pkg-config
6372 # fallback for libmfx, it is actually being used to detect a different
6373 # installation route altogether.  If libmfx is installed via the Intel
6374 # Media SDK or Intel Media Server Studio, these don't come with
6375 # pkg-config support.  Instead, users should make sure that the build
6376 # can find the libraries and headers through other means.
6377 enabled libmfx            && { check_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit ||
6378                                { require libmfx "mfx/mfxvideo.h" MFXInit "-llibmfx $advapi32_extralibs" && warn "using libmfx without pkg-config"; } }
6379 if enabled libmfx; then
6380    check_cc MFX_CODEC_VP9 "mfx/mfxvp9.h mfx/mfxstructures.h" "MFX_CODEC_VP9"
6381 fi
6382
6383 enabled libmodplug        && require_pkg_config libmodplug libmodplug libmodplug/modplug.h ModPlug_Load
6384 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame $libm_extralibs
6385 enabled libmysofa         && { check_pkg_config libmysofa libmysofa mysofa.h mysofa_neighborhood_init_withstepdefine ||
6386                                require libmysofa mysofa.h mysofa_neighborhood_init_withstepdefine -lmysofa $zlib_extralibs; }
6387 enabled libnpp            && { check_lib libnpp npp.h nppGetLibVersion -lnppig -lnppicc -lnppc -lnppidei ||
6388                                check_lib libnpp npp.h nppGetLibVersion -lnppi -lnppc -lnppidei ||
6389                                die "ERROR: libnpp not found"; }
6390 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
6391 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
6392 enabled libopencv         && { check_headers opencv2/core/core_c.h &&
6393                                { check_pkg_config libopencv opencv opencv2/core/core_c.h cvCreateImageHeader ||
6394                                  require libopencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
6395                                require_pkg_config libopencv opencv opencv/cxcore.h cvCreateImageHeader; }
6396 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
6397 enabled libopenjpeg       && { check_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version ||
6398                                { require_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } }
6399 enabled libopenmpt        && require_pkg_config libopenmpt "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create -lstdc++ && append libopenmpt_extralibs "-lstdc++"
6400 enabled libopenvino       && require libopenvino c_api/ie_c_api.h ie_c_api_version -linference_engine_c_api
6401 enabled libopus           && {
6402     enabled libopus_decoder && {
6403         require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
6404     }
6405     enabled libopus_encoder && {
6406         require_pkg_config libopus opus opus_multistream.h opus_multistream_surround_encoder_create
6407     }
6408 }
6409 enabled libpulse          && require_pkg_config libpulse libpulse pulse/pulseaudio.h pa_context_new
6410 enabled librabbitmq       && require_pkg_config librabbitmq "librabbitmq >= 0.7.1" amqp.h amqp_new_connection
6411 enabled librav1e          && require_pkg_config librav1e "rav1e >= 0.4.0" rav1e.h rav1e_context_new
6412 enabled librsvg           && require_pkg_config librsvg librsvg-2.0 librsvg-2.0/librsvg/rsvg.h rsvg_handle_render_cairo
6413 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
6414 enabled librubberband     && require_pkg_config librubberband "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new -lstdc++ && append librubberband_extralibs "-lstdc++"
6415 enabled libshine          && require_pkg_config libshine shine shine/layer3.h shine_encode_buffer
6416 enabled libsmbclient      && { check_pkg_config libsmbclient smbclient libsmbclient.h smbc_init ||
6417                                require libsmbclient libsmbclient.h smbc_init -lsmbclient; }
6418 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy -lstdc++
6419 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
6420 enabled libssh            && require_pkg_config libssh libssh libssh/sftp.h sftp_init
6421 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init
6422 enabled libsrt            && require_pkg_config libsrt "srt >= 1.3.0" srt/srt.h srt_socket
6423 enabled libsvtav1         && require_pkg_config libsvtav1 "SvtAv1Enc >= 0.8.4" EbSvtAv1Enc.h svt_av1_enc_init_handle
6424 enabled libtensorflow     && require libtensorflow tensorflow/c/c_api.h TF_Version -ltensorflow
6425 enabled libtesseract      && require_pkg_config libtesseract tesseract tesseract/capi.h TessBaseAPICreate
6426 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
6427 enabled libtls            && require_pkg_config libtls libtls tls.h tls_configure
6428 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
6429                              { check_lib libtwolame twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
6430                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
6431 enabled libuavs3d         && require_pkg_config libuavs3d "uavs3d >= 1.1.41" uavs3d.h uavs3d_decode
6432 enabled libv4l2           && require_pkg_config libv4l2 libv4l2 libv4l2.h v4l2_ioctl
6433 enabled libvidstab        && require_pkg_config libvidstab "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
6434 enabled libvmaf           && require_pkg_config libvmaf "libvmaf >= 1.5.2" libvmaf.h compute_vmaf
6435 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
6436 enabled libvorbis         && require_pkg_config libvorbis vorbis vorbis/codec.h vorbis_info_init &&
6437                              require_pkg_config libvorbisenc vorbisenc vorbis/vorbisenc.h vorbis_encode_init
6438
6439 enabled libvpx            && {
6440     enabled libvpx_vp8_decoder && {
6441         check_pkg_config libvpx_vp8_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
6442             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"
6443     }
6444     enabled libvpx_vp8_encoder && {
6445         check_pkg_config libvpx_vp8_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
6446             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"
6447     }
6448     enabled libvpx_vp9_decoder && {
6449         check_pkg_config libvpx_vp9_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
6450             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"
6451     }
6452     enabled libvpx_vp9_encoder && {
6453         check_pkg_config libvpx_vp9_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
6454             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"
6455     }
6456     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
6457         die "libvpx enabled but no supported decoders found"
6458     fi
6459 }
6460
6461 enabled libwebp           && {
6462     enabled libwebp_encoder      && require_pkg_config libwebp "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
6463     enabled libwebp_anim_encoder && check_pkg_config libwebp_anim_encoder "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit; }
6464 enabled libx264           && { check_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode ||
6465                                { require libx264 "stdint.h x264.h" x264_encoder_encode "-lx264 $pthreads_extralibs $libm_extralibs" &&
6466                                  warn "using libx264 without pkg-config"; } } &&
6467                              require_cpp_condition libx264 x264.h "X264_BUILD >= 118" &&
6468                              check_cpp_condition libx262 x264.h "X264_MPEG2"
6469 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
6470                              require_cpp_condition libx265 x265.h "X265_BUILD >= 70"
6471 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode "-lxavs $pthreads_extralibs $libm_extralibs"
6472 enabled libxavs2          && require_pkg_config libxavs2 "xavs2 >= 1.3.0" "stdint.h xavs2.h" xavs2_api_get
6473 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
6474 enabled libzimg           && require_pkg_config libzimg "zimg >= 2.7.0" zimg.h zimg_get_api_version
6475 enabled libzmq            && require_pkg_config libzmq "libzmq >= 4.2.1" zmq.h zmq_ctx_new
6476 enabled libzvbi           && require_pkg_config libzvbi zvbi-0.2 libzvbi.h vbi_decoder_new &&
6477                              { test_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
6478                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
6479 enabled libxml2           && require_pkg_config libxml2 libxml-2.0 libxml2/libxml/xmlversion.h xmlCheckVersion
6480 enabled mbedtls           && { check_pkg_config mbedtls mbedtls mbedtls/x509_crt.h mbedtls_x509_crt_init ||
6481                                check_pkg_config mbedtls mbedtls mbedtls/ssl.h mbedtls_ssl_init ||
6482                                check_lib mbedtls mbedtls/ssl.h mbedtls_ssl_init -lmbedtls -lmbedx509 -lmbedcrypto ||
6483                                die "ERROR: mbedTLS not found"; }
6484 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
6485 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
6486                                { ! enabled cross_compile &&
6487                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
6488                                  add_ldflags -L/opt/vc/lib/ &&
6489                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
6490                                die "ERROR: mmal not found" &&
6491                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
6492 enabled openal            && { { for al_extralibs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
6493                                check_lib openal 'AL/al.h' alGetError "${al_extralibs}" && break; done } ||
6494                                die "ERROR: openal not found"; } &&
6495                              { test_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
6496                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
6497 enabled opencl            && { check_pkg_config opencl OpenCL CL/cl.h clEnqueueNDRangeKernel ||
6498                                check_lib opencl OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
6499                                check_lib opencl CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
6500                                die "ERROR: opencl not found"; } &&
6501                              { test_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
6502                                test_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
6503                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
6504 enabled opengl            && { check_lib opengl GL/glx.h glXGetProcAddress "-lGL" ||
6505                                check_lib opengl windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
6506                                check_lib opengl OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
6507                                check_lib opengl ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
6508                                die "ERROR: opengl not found."
6509                              }
6510 enabled omx_rpi           && { test_code cc OMX_Core.h OMX_IndexConfigBrcmVideoRequestIFrame ||
6511                                { ! enabled cross_compile &&
6512                                  add_cflags -isystem/opt/vc/include/IL &&
6513                                  test_code cc OMX_Core.h OMX_IndexConfigBrcmVideoRequestIFrame; } ||
6514                                die "ERROR: OpenMAX IL headers from raspberrypi/firmware not found"; } &&
6515                              enable omx
6516 enabled omx               && require_headers OMX_Core.h
6517 enabled openssl           && { check_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
6518                                check_pkg_config openssl openssl openssl/ssl.h SSL_library_init ||
6519                                check_lib openssl openssl/ssl.h OPENSSL_init_ssl -lssl -lcrypto ||
6520                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
6521                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
6522                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
6523                                die "ERROR: openssl not found"; }
6524 enabled pocketsphinx      && require_pkg_config pocketsphinx pocketsphinx pocketsphinx/pocketsphinx.h ps_init
6525 enabled rkmpp             && { require_pkg_config rkmpp rockchip_mpp  rockchip/rk_mpi.h mpp_create &&
6526                                require_pkg_config rockchip_mpp "rockchip_mpp >= 1.3.7" rockchip/rk_mpi.h mpp_create &&
6527                                { enabled libdrm ||
6528                                  die "ERROR: rkmpp requires --enable-libdrm"; }
6529                              }
6530 enabled vapoursynth       && require_pkg_config vapoursynth "vapoursynth-script >= 42" VSScript.h vsscript_init
6531
6532
6533 if enabled gcrypt; then
6534     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
6535     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
6536         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
6537         gcrypt_extralibs=$("${GCRYPT_CONFIG}" --libs)
6538         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_extralibs ||
6539             die "ERROR: gcrypt not found"
6540         add_cflags $gcrypt_cflags
6541     else
6542         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
6543     fi
6544 fi
6545
6546 if enabled sdl2; then
6547     SDL2_CONFIG="${cross_prefix}sdl2-config"
6548     test_pkg_config sdl2 "sdl2 >= 2.0.1 sdl2 < 2.1.0" SDL_events.h SDL_PollEvent
6549     if disabled sdl2 && "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
6550         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
6551         sdl2_extralibs=$("${SDL2_CONFIG}" --libs)
6552         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
6553         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
6554         check_func_headers SDL_events.h SDL_PollEvent $sdl2_extralibs $sdl2_cflags &&
6555             enable sdl2
6556     fi
6557     if test $target_os = "mingw32"; then
6558         sdl2_extralibs=$(filter_out '-mwindows' $sdl2_extralibs)
6559     fi
6560 fi
6561
6562 if enabled decklink; then
6563     case $target_os in
6564         mingw32*|mingw64*|win32|win64)
6565             decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
6566             decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
6567             ;;
6568     esac
6569 fi
6570
6571 enabled securetransport &&
6572     check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
6573     check_lib securetransport "Security/SecureTransport.h Security/Security.h" "SSLCreateContext" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" ||
6574         disable securetransport
6575
6576 enabled securetransport &&
6577     check_func SecItemImport "-Wl,-framework,CoreFoundation -Wl,-framework,Security"
6578
6579 enabled schannel &&
6580     check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
6581     test_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" &&
6582     schannel_extralibs="-lsecur32" ||
6583         disable schannel
6584
6585 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
6586 enabled makeinfo \
6587     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
6588     && enable makeinfo_html || disable makeinfo_html
6589 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
6590 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
6591 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
6592 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
6593
6594 # check V4L2 codecs available in the API
6595 if enabled v4l2_m2m; then
6596     check_headers linux/fb.h
6597     check_headers linux/videodev2.h
6598     test_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6599     check_cc v4l2_m2m linux/videodev2.h "int i = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_VIDEO_M2M | V4L2_BUF_FLAG_LAST;"
6600     check_cc vc1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VC1_ANNEX_G;"
6601     check_cc mpeg1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG1;"
6602     check_cc mpeg2_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG2;"
6603     check_cc mpeg4_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG4;"
6604     check_cc hevc_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_HEVC;"
6605     check_cc h263_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H263;"
6606     check_cc h264_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H264;"
6607     check_cc vp8_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP8;"
6608     check_cc vp9_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP9;"
6609 fi
6610
6611 check_headers sys/videoio.h
6612 test_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6613
6614 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
6615 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
6616 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
6617 # w32api 3.12 had it defined wrong
6618 check_cpp_condition vfwcap_defines vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER"
6619
6620 check_type "dshow.h" IBaseFilter
6621
6622 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
6623 check_headers "dev/bktr/ioctl_meteor.h dev/bktr/ioctl_bt848.h"                   ||
6624     check_headers "machine/ioctl_meteor.h machine/ioctl_bt848.h"                 ||
6625     check_headers "dev/video/meteor/ioctl_meteor.h dev/video/bktr/ioctl_bt848.h" ||
6626     check_headers "dev/ic/bt8xx.h"
6627
6628 if check_struct sys/soundcard.h audio_buf_info bytes; then
6629     enable_sanitized sys/soundcard.h
6630 else
6631     test_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_sanitized sys/soundcard.h
6632     #include <sys/soundcard.h>
6633     audio_buf_info abc;
6634 EOF
6635 fi
6636
6637 enabled alsa && { check_pkg_config alsa alsa "alsa/asoundlib.h" snd_pcm_htimestamp ||
6638                   check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound; }
6639
6640 enabled libjack &&
6641     require_pkg_config libjack jack jack/jack.h jack_port_get_latency_range
6642
6643 enabled sndio && check_lib sndio sndio.h sio_open -lsndio
6644
6645 if enabled libcdio; then
6646     check_pkg_config libcdio libcdio_paranoia "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open ||
6647     check_pkg_config libcdio libcdio_paranoia "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open ||
6648     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6649     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6650     die "ERROR: No usable libcdio/cdparanoia found"
6651 fi
6652
6653 enabled libxcb && check_pkg_config libxcb "xcb >= 1.4" xcb/xcb.h xcb_connect ||
6654     disable libxcb_shm libxcb_shape libxcb_xfixes
6655
6656 if enabled libxcb; then
6657     enabled libxcb_shm    && check_pkg_config libxcb_shm    xcb-shm    xcb/shm.h    xcb_shm_attach
6658     enabled libxcb_shape  && check_pkg_config libxcb_shape  xcb-shape  xcb/shape.h  xcb_shape_get_rectangles
6659     enabled libxcb_xfixes && check_pkg_config libxcb_xfixes xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image
6660 fi
6661
6662 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6663
6664 # d3d11va requires linking directly to dxgi and d3d11 if not building for
6665 # the desktop api partition
6666 test_cpp <<EOF && enable uwp && d3d11va_extralibs="-ldxgi -ld3d11"
6667 #ifdef WINAPI_FAMILY
6668 #include <winapifamily.h>
6669 #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
6670 #error desktop, not uwp
6671 #else
6672 // WINAPI_FAMILY_APP, WINAPI_FAMILY_PHONE_APP => UWP
6673 #endif
6674 #else
6675 #error no family set
6676 #endif
6677 EOF
6678
6679 enabled libdrm &&
6680     check_pkg_config libdrm_getfb2 libdrm "xf86drmMode.h" drmModeGetFB2
6681
6682 enabled vaapi &&
6683     check_pkg_config vaapi "libva >= 0.35.0" "va/va.h" vaInitialize
6684
6685 if enabled vaapi; then
6686     check_pkg_config vaapi_drm "libva-drm" "va/va_drm.h" vaGetDisplayDRM
6687
6688     if enabled xlib; then
6689         check_pkg_config vaapi_x11 "libva-x11" "va/va_x11.h" vaGetDisplay
6690     fi
6691
6692     check_cpp_condition vaapi_1 "va/va.h" "VA_CHECK_VERSION(1, 0, 0)"
6693
6694     check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
6695     check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
6696     check_struct "va/va.h" "VADecPictureParameterBufferAV1" bit_depth_idx
6697     check_type   "va/va.h va/va_vpp.h" "VAProcFilterParameterBufferHDRToneMapping"
6698     check_struct "va/va.h va/va_vpp.h" "VAProcPipelineCaps" rotation_flags
6699     check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
6700     check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
6701     check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
6702     check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
6703 fi
6704
6705 if enabled_all opencl libdrm ; then
6706     check_type "CL/cl_intel.h" "clCreateImageFromFdINTEL_fn" &&
6707         enable opencl_drm_beignet
6708     check_func_headers "CL/cl_ext.h" clImportMemoryARM &&
6709         enable opencl_drm_arm
6710 fi
6711
6712 if enabled_all opencl vaapi ; then
6713     if enabled opencl_drm_beignet ; then
6714         enable opencl_vaapi_beignet
6715     else
6716         check_type "CL/cl.h CL/cl_va_api_media_sharing_intel.h" "clCreateFromVA_APIMediaSurfaceINTEL_fn" &&
6717             enable opencl_vaapi_intel_media
6718     fi
6719 fi
6720
6721 if enabled_all opencl dxva2 ; then
6722     check_type "CL/cl_dx9_media_sharing.h" cl_dx9_surface_info_khr &&
6723         enable opencl_dxva2
6724 fi
6725
6726 if enabled_all opencl d3d11va ; then
6727     check_type "CL/cl_d3d11.h" clGetDeviceIDsFromD3D11KHR_fn &&
6728         enable opencl_d3d11
6729 fi
6730
6731 enabled vdpau &&
6732     check_cpp_condition vdpau vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP"
6733
6734 enabled vdpau &&
6735     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
6736
6737 enabled crystalhd && check_lib crystalhd "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd
6738
6739 enabled vulkan &&
6740     require_pkg_config vulkan "vulkan >= 1.1.97" "vulkan/vulkan.h" vkCreateInstance
6741
6742 if enabled x86; then
6743     case $target_os in
6744         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6745             ;;
6746         *)
6747             disable ffnvcodec cuvid nvdec nvenc
6748             ;;
6749     esac
6750 elif enabled_any aarch64 ppc64 && ! enabled bigendian; then
6751     case $target_os in
6752         linux)
6753             ;;
6754         *)
6755             disable ffnvcodec cuvid nvdec nvenc
6756             ;;
6757     esac
6758 else
6759     disable ffnvcodec cuvid nvdec nvenc
6760 fi
6761
6762 enabled ffnvcodec && enable cuda
6763
6764 enabled nvenc &&
6765     test_cc -I$source_path <<EOF || disable nvenc
6766 #include <ffnvcodec/nvEncodeAPI.h>
6767 NV_ENCODE_API_FUNCTION_LIST flist;
6768 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6769 int main(void) { return 0; }
6770 EOF
6771
6772 if enabled_any nvdec cuvid; then
6773     check_type "ffnvcodec/dynlink_cuda.h ffnvcodec/dynlink_cuviddec.h" "CUVIDAV1PICPARAMS"
6774 fi
6775
6776 enabled amf &&
6777     check_cpp_condition amf "AMF/core/Version.h" \
6778         "(AMF_VERSION_MAJOR << 48 | AMF_VERSION_MINOR << 32 | AMF_VERSION_RELEASE << 16 | AMF_VERSION_BUILD_NUM) >= 0x0001000400090000"
6779
6780 # Funny iconv installations are not unusual, so check it after all flags have been set
6781 if enabled libc_iconv; then
6782     check_func_headers iconv.h iconv
6783 elif enabled iconv; then
6784     check_func_headers iconv.h iconv || check_lib iconv iconv.h iconv -liconv
6785 fi
6786
6787 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6788
6789 # add some useful compiler flags if supported
6790 check_cflags -Wdeclaration-after-statement
6791 check_cflags -Wall
6792 check_cflags -Wdisabled-optimization
6793 check_cflags -Wpointer-arith
6794 check_cflags -Wredundant-decls
6795 check_cflags -Wwrite-strings
6796 check_cflags -Wtype-limits
6797 check_cflags -Wundef
6798 check_cflags -Wmissing-prototypes
6799 check_cflags -Wno-pointer-to-int-cast
6800 check_cflags -Wstrict-prototypes
6801 check_cflags -Wempty-body
6802
6803 if enabled extra_warnings; then
6804     check_cflags -Wcast-qual
6805     check_cflags -Wextra
6806     check_cflags -Wpedantic
6807 fi
6808
6809 check_disable_warning(){
6810     warning_flag=-W${1#-Wno-}
6811     test_cflags $unknown_warning_flags $warning_flag && add_cflags $1
6812 }
6813
6814 test_cflags -Werror=unused-command-line-argument &&
6815     append unknown_warning_flags "-Werror=unused-command-line-argument"
6816 test_cflags -Werror=unknown-warning-option &&
6817     append unknown_warning_flags "-Werror=unknown-warning-option"
6818
6819 check_disable_warning -Wno-parentheses
6820 check_disable_warning -Wno-switch
6821 check_disable_warning -Wno-format-zero-length
6822 check_disable_warning -Wno-pointer-sign
6823 check_disable_warning -Wno-unused-const-variable
6824 check_disable_warning -Wno-bool-operation
6825 check_disable_warning -Wno-char-subscripts
6826
6827 check_disable_warning_headers(){
6828     warning_flag=-W${1#-Wno-}
6829     test_cflags $warning_flag && add_cflags_headers $1
6830 }
6831
6832 check_disable_warning_headers -Wno-deprecated-declarations
6833 check_disable_warning_headers -Wno-unused-variable
6834
6835 test_cc <<EOF && enable blocks_extension
6836 void (^block)(void);
6837 EOF
6838
6839 # add some linker flags
6840 check_ldflags -Wl,--warn-common
6841 check_ldflags -Wl,-rpath-link=:libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6842 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir && add_ldsoflags -Wl,-rpath,$libdir
6843 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6844
6845 # add some strip flags
6846 check_stripflags -x
6847
6848 enabled neon_clobber_test &&
6849     check_ldflags -Wl,--wrap,avcodec_open2              \
6850                   -Wl,--wrap,avcodec_decode_audio4      \
6851                   -Wl,--wrap,avcodec_decode_video2      \
6852                   -Wl,--wrap,avcodec_decode_subtitle2   \
6853                   -Wl,--wrap,avcodec_encode_audio2      \
6854                   -Wl,--wrap,avcodec_encode_video2      \
6855                   -Wl,--wrap,avcodec_encode_subtitle    \
6856                   -Wl,--wrap,avcodec_send_packet        \
6857                   -Wl,--wrap,avcodec_receive_packet     \
6858                   -Wl,--wrap,avcodec_send_frame         \
6859                   -Wl,--wrap,avcodec_receive_frame      \
6860                   -Wl,--wrap,swr_convert                \
6861                   -Wl,--wrap,avresample_convert ||
6862     disable neon_clobber_test
6863
6864 enabled xmm_clobber_test &&
6865     check_ldflags -Wl,--wrap,avcodec_open2              \
6866                   -Wl,--wrap,avcodec_decode_audio4      \
6867                   -Wl,--wrap,avcodec_decode_video2      \
6868                   -Wl,--wrap,avcodec_decode_subtitle2   \
6869                   -Wl,--wrap,avcodec_encode_audio2      \
6870                   -Wl,--wrap,avcodec_encode_video2      \
6871                   -Wl,--wrap,avcodec_encode_subtitle    \
6872                   -Wl,--wrap,avcodec_send_packet        \
6873                   -Wl,--wrap,avcodec_receive_packet     \
6874                   -Wl,--wrap,avcodec_send_frame         \
6875                   -Wl,--wrap,avcodec_receive_frame      \
6876                   -Wl,--wrap,swr_convert                \
6877                   -Wl,--wrap,avresample_convert         \
6878                   -Wl,--wrap,sws_scale ||
6879     disable xmm_clobber_test
6880
6881 check_ld "cc" proper_dce <<EOF
6882 extern const int array[512];
6883 static inline int func(void) { return array[0]; }
6884 int main(void) { return 0; }
6885 EOF
6886
6887 if enabled proper_dce; then
6888     echo "X { local: *; };" > $TMPV
6889     if test_ldflags -Wl,${version_script},$TMPV; then
6890         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6891         quotes='""'
6892         test_cc <<EOF && enable symver_asm_label
6893 void ff_foo(void) __asm__ ("av_foo@VERSION");
6894 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6895 EOF
6896         test_cc <<EOF && enable symver_gnu_asm
6897 __asm__(".symver ff_foo,av_foo@VERSION");
6898 void ff_foo(void) {}
6899 EOF
6900     fi
6901 fi
6902
6903 if [ -z "$optflags" ]; then
6904     if enabled small; then
6905         optflags=$cflags_size
6906     elif enabled optimizations; then
6907         optflags=$cflags_speed
6908     else
6909         optflags=$cflags_noopt
6910     fi
6911 fi
6912
6913 check_optflags(){
6914     check_cflags "$@"
6915     enabled lto && check_ldflags "$@"
6916 }
6917
6918 check_optflags $optflags
6919 check_optflags -fno-math-errno
6920 check_optflags -fno-signed-zeros
6921
6922 if enabled lto; then
6923     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6924     check_cflags  -flto
6925     check_ldflags -flto $cpuflags
6926     disable inline_asm_direct_symbol_refs
6927 fi
6928
6929 enabled ftrapv && check_cflags -ftrapv
6930
6931 test_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6932 int x;
6933 EOF
6934
6935
6936 if enabled icc; then
6937     # Just warnings, no remarks
6938     check_cflags -w1
6939     # -wd: Disable following warnings
6940     # 144, 167, 556: -Wno-pointer-sign
6941     # 188: enumerated type mixed with another type
6942     # 1292: attribute "foo" ignored
6943     # 1419: external declaration in primary source file
6944     # 10006: ignoring unknown option -fno-signed-zeros
6945     # 10148: ignoring unknown option -Wno-parentheses
6946     # 10156: ignoring option '-W'; no argument required
6947     # 13200: No EMMS instruction before call to function
6948     # 13203: No EMMS instruction before return from function
6949     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6950     # 11030: Warning unknown option --as-needed
6951     # 10156: ignoring option '-export'; no argument required
6952     check_ldflags -wd10156,11030
6953     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6954     enable ebp_available
6955     # The test above does not test linking
6956     enabled lto && disable symver_asm_label
6957     if enabled x86_32; then
6958         icc_version=$($cc -dumpversion)
6959         test ${icc_version%%.*} -ge 11 &&
6960             check_cflags -falign-stack=maintain-16-byte ||
6961             disable aligned_stack
6962     fi
6963 elif enabled gcc; then
6964     check_optflags -fno-tree-vectorize
6965     check_cflags -Werror=format-security
6966     check_cflags -Werror=implicit-function-declaration
6967     check_cflags -Werror=missing-prototypes
6968     check_cflags -Werror=return-type
6969     check_cflags -Werror=vla
6970     check_cflags -Wformat
6971     check_cflags -fdiagnostics-color=auto
6972     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6973     if enabled x86_32; then
6974         case $target_os in
6975         *bsd*)
6976             # BSDs don't guarantee a 16 byte aligned stack, but we can
6977             # request GCC to try to maintain 16 byte alignment throughout
6978             # function calls. Library entry points that might call assembly
6979             # functions align the stack. (The parameter means 2^4 bytes.)
6980             check_cflags -mpreferred-stack-boundary=4
6981             ;;
6982         esac
6983     fi
6984 elif enabled llvm_gcc; then
6985     check_cflags -mllvm -stack-alignment=16
6986 elif enabled clang; then
6987     if enabled x86_32; then
6988         # Clang doesn't support maintaining alignment without assuming the
6989         # same alignment in every function. If 16 byte alignment would be
6990         # enabled, one would also have to either add attribute_align_arg on
6991         # every single entry point into the libraries or enable -mstackrealign
6992         # (doing stack realignment in every single function).
6993         case $target_os in
6994         mingw32|win32|*bsd*)
6995             disable aligned_stack
6996             ;;
6997         *)
6998             check_cflags -mllvm -stack-alignment=16
6999             check_cflags -mstack-alignment=16
7000             ;;
7001         esac
7002     else
7003         check_cflags -mllvm -stack-alignment=16
7004         check_cflags -mstack-alignment=16
7005     fi
7006     check_cflags -Qunused-arguments
7007     check_cflags -Werror=implicit-function-declaration
7008     check_cflags -Werror=missing-prototypes
7009     check_cflags -Werror=return-type
7010 elif enabled cparser; then
7011     add_cflags -Wno-missing-variable-declarations
7012     add_cflags -Wno-empty-statement
7013 elif enabled armcc; then
7014     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
7015     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
7016     # 2523: use of inline assembly is deprecated
7017     add_cflags -W${armcc_opt},--diag_suppress=2523
7018     add_cflags -W${armcc_opt},--diag_suppress=1207
7019     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
7020     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
7021     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
7022     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
7023 elif enabled pathscale; then
7024     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
7025     disable inline_asm
7026 elif enabled_any msvc icl; then
7027     enabled x86_32 && disable aligned_stack
7028     enabled_all x86_32 debug && add_cflags -Oy-
7029     enabled debug && add_ldflags -debug
7030     enable pragma_deprecated
7031     if enabled icl; then
7032         # -Qansi-alias is basically -fstrict-aliasing, but does not work
7033         # (correctly) on icl 13.x.
7034         test_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
7035             add_cflags -Qansi-alias
7036         # Some inline asm is not compilable in debug
7037         if enabled debug; then
7038             disable ebp_available
7039             disable ebx_available
7040         fi
7041     fi
7042     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
7043     check_cpp_condition log2 crtversion.h "_VC_CRT_MAJOR_VERSION >= 12"
7044     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
7045     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
7046     # (as it ends up if the restrict redefine is done before including stdlib.h), while
7047     # MSVC 2013 and newer can handle it fine.
7048     # If this declspec fails, force including stdlib.h before the restrict redefinition
7049     # happens in config.h.
7050     if [ $restrict_keyword != restrict ]; then
7051         test_cc <<EOF || add_cflags -FIstdlib.h
7052 __declspec($restrict_keyword) void *foo(int);
7053 EOF
7054     fi
7055     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
7056     # Issue has been fixed in MSVC v19.00.24218.
7057     test_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
7058         check_cflags -d2SSAOptimizer-
7059     # enable utf-8 source processing on VS2015 U2 and newer
7060     test_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
7061         add_cflags -utf-8
7062 fi
7063
7064 for pfx in "" host_; do
7065     varname=${pfx%_}cc_type
7066     eval "type=\$$varname"
7067     if [ "$type" = "msvc" ]; then
7068         test_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
7069 static inline int foo(int a) { return a; }
7070 EOF
7071     fi
7072 done
7073
7074 case $as_type in
7075     clang)
7076         add_asflags -Qunused-arguments
7077     ;;
7078 esac
7079
7080 case $ld_type in
7081     clang)
7082         check_ldflags -Qunused-arguments
7083     ;;
7084 esac
7085
7086 enable frame_thread_encoder
7087
7088 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
7089
7090 check_deps $CONFIG_LIST       \
7091            $CONFIG_EXTRA      \
7092            $HAVE_LIST         \
7093            $ALL_COMPONENTS    \
7094
7095 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"
7096 enabled avresample && warn "Building with deprecated library libavresample"
7097
7098 case $target_os in
7099 haiku)
7100     disable memalign
7101     disable posix_memalign
7102     ;;
7103 *-dos|freedos|opendos)
7104     if test_cpp_condition sys/version.h "defined(__DJGPP__) && __DJGPP__ == 2 && __DJGPP_MINOR__ == 5"; then
7105         disable memalign
7106     fi
7107     ;;
7108 esac
7109
7110 flatten_extralibs(){
7111     nested_entries=
7112     list_name=$1
7113     eval list=\$${1}
7114     for entry in $list; do
7115         entry_copy=$entry
7116         resolve entry_copy
7117         flat_entries=
7118         for e in $entry_copy; do
7119             case $e in
7120                 *_extralibs) nested_entries="$nested_entries$e ";;
7121                           *) flat_entries="$flat_entries$e ";;
7122             esac
7123         done
7124         eval $entry="\$flat_entries"
7125     done
7126     append $list_name "$nested_entries"
7127
7128     resolve nested_entries
7129     if test -n "$(filter '*_extralibs' $nested_entries)"; then
7130         flatten_extralibs $list_name
7131     fi
7132 }
7133
7134 flatten_extralibs_wrapper(){
7135     list_name=$1
7136     flatten_extralibs $list_name
7137     unique $list_name
7138     resolve $list_name
7139     eval $list_name=\$\(\$ldflags_filter \$$list_name\)
7140     eval printf \''%s'\' \""\$$list_name"\"
7141 }
7142
7143 for linkunit in $LIBRARY_LIST; do
7144     unset current_extralibs
7145     eval components=\$$(toupper ${linkunit})_COMPONENTS_LIST
7146     for comp in ${components}; do
7147         enabled $comp || continue
7148         comp_extralibs="${comp}_extralibs"
7149         append current_extralibs $comp_extralibs
7150     done
7151     eval prepend ${linkunit}_extralibs $current_extralibs
7152 done
7153
7154 for linkunit in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
7155     eval ${linkunit}_extralibs=\$\(flatten_extralibs_wrapper ${linkunit}_extralibs\)
7156 done
7157
7158 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
7159
7160 for thread in $THREADS_LIST; do
7161     if enabled $thread; then
7162         test -n "$thread_type" &&
7163             die "ERROR: Only one thread type must be selected." ||
7164             thread_type="$thread"
7165     fi
7166 done
7167
7168 if disabled stdatomic; then
7169     if enabled atomics_gcc; then
7170         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
7171     elif enabled atomics_win32; then
7172         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
7173     elif enabled atomics_suncc; then
7174         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
7175     elif enabled pthreads; then
7176         add_compat atomics/pthread/stdatomic.o
7177         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
7178     else
7179         enabled threads && die "Threading is enabled, but no atomics are available"
7180         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
7181     fi
7182 fi
7183
7184 # Check if requested libraries were found.
7185 for lib in $AUTODETECT_LIBS; do
7186     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
7187 done
7188
7189 enabled zlib && add_cppflags -DZLIB_CONST
7190
7191 # conditional library dependencies, in any order
7192 enabled afftdn_filter       && prepend avfilter_deps "avcodec"
7193 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
7194 enabled afir_filter         && prepend avfilter_deps "avcodec"
7195 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
7196 enabled aresample_filter    && prepend avfilter_deps "swresample"
7197 enabled atempo_filter       && prepend avfilter_deps "avcodec"
7198 enabled bm3d_filter         && prepend avfilter_deps "avcodec"
7199 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
7200 enabled convolve_filter     && prepend avfilter_deps "avcodec"
7201 enabled deconvolve_filter   && prepend avfilter_deps "avcodec"
7202 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
7203 enabled elbg_filter         && prepend avfilter_deps "avcodec"
7204 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
7205 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
7206 enabled firequalizer_filter && prepend avfilter_deps "avcodec"
7207 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
7208 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
7209 enabled pan_filter          && prepend avfilter_deps "swresample"
7210 enabled pp_filter           && prepend avfilter_deps "postproc"
7211 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
7212 enabled resample_filter && prepend avfilter_deps "avresample"
7213 enabled sab_filter          && prepend avfilter_deps "swscale"
7214 enabled scale_filter    && prepend avfilter_deps "swscale"
7215 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
7216 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
7217 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
7218 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
7219 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
7220 enabled signature_filter    && prepend avfilter_deps "avcodec avformat"
7221 enabled smartblur_filter    && prepend avfilter_deps "swscale"
7222 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
7223 enabled spp_filter          && prepend avfilter_deps "avcodec"
7224 enabled sr_filter           && prepend avfilter_deps "avformat swscale"
7225 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
7226 enabled uspp_filter         && prepend avfilter_deps "avcodec"
7227 enabled zoompan_filter      && prepend avfilter_deps "swscale"
7228
7229 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
7230
7231 #FIXME
7232 enabled_any sdl2_outdev opengl_outdev && enabled sdl2 &&
7233     add_cflags $(filter_out '-Dmain=SDL_main' $sdl2_cflags)
7234
7235 enabled opus_decoder    && prepend avcodec_deps "swresample"
7236
7237 # reorder the items at var $1 to align with the items order at var $2 .
7238 # die if an item at $1 is not at $2 .
7239 reorder_by(){
7240     eval rb_in=\$$1
7241     eval rb_ordered=\$$2
7242
7243     for rb in $rb_in; do
7244         is_in $rb $rb_ordered || die "$rb at \$$1 is not at \$$2"
7245     done
7246
7247     rb_out=
7248     for rb in $rb_ordered; do
7249         is_in $rb $rb_in && rb_out="$rb_out$rb "
7250     done
7251     eval $1=\$rb_out
7252 }
7253
7254 # deps-expand fflib $1:  N x {append all expanded deps; unique}
7255 # within a set of N items, N expansions are enough to expose a cycle.
7256 expand_deps(){
7257     unique ${1}_deps  # required for the early break test.
7258     for dummy in $LIBRARY_LIST; do  # N iteratios
7259         eval deps=\$${1}_deps
7260         append ${1}_deps $(map 'eval echo \$${v}_deps' $deps)
7261         unique ${1}_deps
7262         eval '[ ${#deps} = ${#'${1}_deps'} ]' && break  # doesn't expand anymore
7263     done
7264
7265     eval is_in $1 \$${1}_deps && die "Dependency cycle at ${1}_deps"
7266     reorder_by ${1}_deps LIBRARY_LIST  # linking order is expected later
7267 }
7268
7269 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
7270 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
7271
7272 map 'expand_deps $v' $LIBRARY_LIST
7273
7274 if test "$quiet" != "yes"; then
7275
7276 echo "install prefix            $prefix"
7277 echo "source path               $source_path"
7278 echo "C compiler                $cc"
7279 echo "C library                 $libc_type"
7280 if test "$host_cc" != "$cc"; then
7281     echo "host C compiler           $host_cc"
7282     echo "host C library            $host_libc_type"
7283 fi
7284 echo "ARCH                      $arch ($cpu)"
7285 if test "$build_suffix" != ""; then
7286     echo "build suffix              $build_suffix"
7287 fi
7288 if test "$progs_suffix" != ""; then
7289     echo "progs suffix              $progs_suffix"
7290 fi
7291 if test "$extra_version" != ""; then
7292     echo "version string suffix     $extra_version"
7293 fi
7294 echo "big-endian                ${bigendian-no}"
7295 echo "runtime cpu detection     ${runtime_cpudetect-no}"
7296 if enabled x86; then
7297     echo "standalone assembly       ${x86asm-no}"
7298     echo "x86 assembler             ${x86asmexe}"
7299     echo "MMX enabled               ${mmx-no}"
7300     echo "MMXEXT enabled            ${mmxext-no}"
7301     echo "3DNow! enabled            ${amd3dnow-no}"
7302     echo "3DNow! extended enabled   ${amd3dnowext-no}"
7303     echo "SSE enabled               ${sse-no}"
7304     echo "SSSE3 enabled             ${ssse3-no}"
7305     echo "AESNI enabled             ${aesni-no}"
7306     echo "AVX enabled               ${avx-no}"
7307     echo "AVX2 enabled              ${avx2-no}"
7308     echo "AVX-512 enabled           ${avx512-no}"
7309     echo "XOP enabled               ${xop-no}"
7310     echo "FMA3 enabled              ${fma3-no}"
7311     echo "FMA4 enabled              ${fma4-no}"
7312     echo "i686 features enabled     ${i686-no}"
7313     echo "CMOV is fast              ${fast_cmov-no}"
7314     echo "EBX available             ${ebx_available-no}"
7315     echo "EBP available             ${ebp_available-no}"
7316 fi
7317 if enabled aarch64; then
7318     echo "NEON enabled              ${neon-no}"
7319     echo "VFP enabled               ${vfp-no}"
7320 fi
7321 if enabled arm; then
7322     echo "ARMv5TE enabled           ${armv5te-no}"
7323     echo "ARMv6 enabled             ${armv6-no}"
7324     echo "ARMv6T2 enabled           ${armv6t2-no}"
7325     echo "VFP enabled               ${vfp-no}"
7326     echo "NEON enabled              ${neon-no}"
7327     echo "THUMB enabled             ${thumb-no}"
7328 fi
7329 if enabled mips; then
7330     echo "MIPS FPU enabled          ${mipsfpu-no}"
7331     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
7332     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
7333     echo "MIPS MSA enabled          ${msa-no}"
7334     echo "MIPS MSA2 enabled         ${msa2-no}"
7335     echo "LOONGSON MMI enabled      ${mmi-no}"
7336 fi
7337 if enabled ppc; then
7338     echo "AltiVec enabled           ${altivec-no}"
7339     echo "VSX enabled               ${vsx-no}"
7340     echo "POWER8 enabled            ${power8-no}"
7341     echo "PPC 4xx optimizations     ${ppc4xx-no}"
7342     echo "dcbzl available           ${dcbzl-no}"
7343 fi
7344 echo "debug symbols             ${debug-no}"
7345 echo "strip symbols             ${stripping-no}"
7346 echo "optimize for size         ${small-no}"
7347 echo "optimizations             ${optimizations-no}"
7348 echo "static                    ${static-no}"
7349 echo "shared                    ${shared-no}"
7350 echo "postprocessing support    ${postproc-no}"
7351 echo "network support           ${network-no}"
7352 echo "threading support         ${thread_type-no}"
7353 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
7354 echo "texi2html enabled         ${texi2html-no}"
7355 echo "perl enabled              ${perl-no}"
7356 echo "pod2man enabled           ${pod2man-no}"
7357 echo "makeinfo enabled          ${makeinfo-no}"
7358 echo "makeinfo supports HTML    ${makeinfo_html-no}"
7359 test -n "$random_seed" &&
7360     echo "random seed               ${random_seed}"
7361 echo
7362
7363 echo "External libraries:"
7364 print_enabled '' $EXTERNAL_LIBRARY_LIST $EXTERNAL_AUTODETECT_LIBRARY_LIST | print_in_columns
7365 echo
7366
7367 echo "External libraries providing hardware acceleration:"
7368 print_enabled '' $HWACCEL_LIBRARY_LIST $HWACCEL_AUTODETECT_LIBRARY_LIST | print_in_columns
7369 echo
7370
7371 echo "Libraries:"
7372 print_enabled '' $LIBRARY_LIST | print_in_columns
7373 echo
7374
7375 echo "Programs:"
7376 print_enabled '' $PROGRAM_LIST | print_in_columns
7377 echo
7378
7379 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
7380     echo "Enabled ${type}s:"
7381     eval list=\$$(toupper $type)_LIST
7382     print_enabled '_*' $list | print_in_columns
7383     echo
7384 done
7385
7386 if test -n "$ignore_tests"; then
7387     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
7388     echo "Ignored FATE tests:"
7389     echo $ignore_tests | print_in_columns
7390     echo
7391 fi
7392
7393 echo "License: $license"
7394
7395 fi # test "$quiet" != "yes"
7396
7397 if test -n "$WARN_IF_GETS_DISABLED_LIST"; then
7398     for cfg in $WARN_IF_GETS_DISABLED_LIST; do
7399         if disabled $cfg; then
7400             varname=${cfg}_disable_reason
7401             eval "warn \"Disabled $cfg because \$$varname\""
7402         fi
7403     done
7404 fi
7405
7406 if test -n "$WARNINGS"; then
7407     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
7408     enabled fatal_warnings && exit 1
7409 fi
7410
7411 test -e Makefile || echo "include $source_path/Makefile" > Makefile
7412
7413 esc(){
7414     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
7415 }
7416
7417 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" > ffbuild/config.fate
7418
7419 enabled stripping || strip="echo skipping strip"
7420 enabled stripping || striptype=""
7421
7422 config_files="$TMPH ffbuild/config.mak doc/config.texi"
7423
7424 cat > ffbuild/config.mak <<EOF
7425 # Automatically generated by configure - do not modify!
7426 ifndef FFMPEG_CONFIG_MAK
7427 FFMPEG_CONFIG_MAK=1
7428 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
7429 prefix=$prefix
7430 LIBDIR=\$(DESTDIR)$libdir
7431 SHLIBDIR=\$(DESTDIR)$shlibdir
7432 INCDIR=\$(DESTDIR)$incdir
7433 BINDIR=\$(DESTDIR)$bindir
7434 DATADIR=\$(DESTDIR)$datadir
7435 DOCDIR=\$(DESTDIR)$docdir
7436 MANDIR=\$(DESTDIR)$mandir
7437 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
7438 INSTALL_NAME_DIR=$install_name_dir
7439 SRC_PATH=$source_path
7440 SRC_LINK=$source_link
7441 ifndef MAIN_MAKEFILE
7442 SRC_PATH:=\$(SRC_PATH:.%=..%)
7443 endif
7444 CC_IDENT=$cc_ident
7445 ARCH=$arch
7446 INTRINSICS=$intrinsics
7447 EXTERN_PREFIX=$extern_prefix
7448 CC=$cc
7449 CXX=$cxx
7450 AS=$as
7451 OBJCC=$objcc
7452 LD=$ld
7453 DEPCC=$dep_cc
7454 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
7455 DEPAS=$as
7456 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
7457 X86ASM=$x86asmexe
7458 DEPX86ASM=$x86asmexe
7459 DEPX86ASMFLAGS=\$(X86ASMFLAGS)
7460 AR=$ar
7461 ARFLAGS=$arflags
7462 AR_O=$ar_o
7463 AR_CMD=$ar
7464 NM_CMD=$nm
7465 RANLIB=$ranlib
7466 STRIP=$strip
7467 STRIPTYPE=$striptype
7468 NVCC=$nvcc
7469 CP=cp -p
7470 LN_S=$ln_s
7471 CPPFLAGS=$CPPFLAGS
7472 CFLAGS=$CFLAGS
7473 CXXFLAGS=$CXXFLAGS
7474 OBJCFLAGS=$OBJCFLAGS
7475 ASFLAGS=$ASFLAGS
7476 NVCCFLAGS=$nvccflags
7477 AS_C=$AS_C
7478 AS_O=$AS_O
7479 OBJCC_C=$OBJCC_C
7480 OBJCC_E=$OBJCC_E
7481 OBJCC_O=$OBJCC_O
7482 CC_C=$CC_C
7483 CC_E=$CC_E
7484 CC_O=$CC_O
7485 CXX_C=$CXX_C
7486 CXX_O=$CXX_O
7487 NVCC_C=$NVCC_C
7488 NVCC_O=$NVCC_O
7489 LD_O=$LD_O
7490 X86ASM_O=$X86ASM_O
7491 LD_LIB=$LD_LIB
7492 LD_PATH=$LD_PATH
7493 DLLTOOL=$dlltool
7494 WINDRES=$windres
7495 DEPWINDRES=$dep_cc
7496 DOXYGEN=$doxygen
7497 LDFLAGS=$LDFLAGS
7498 LDEXEFLAGS=$LDEXEFLAGS
7499 LDSOFLAGS=$LDSOFLAGS
7500 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
7501 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
7502 X86ASMFLAGS=$X86ASMFLAGS
7503 MSAFLAGS=$MSAFLAGS
7504 MMIFLAGS=$MMIFLAGS
7505 BUILDSUF=$build_suffix
7506 PROGSSUF=$progs_suffix
7507 FULLNAME=$FULLNAME
7508 LIBPREF=$LIBPREF
7509 LIBSUF=$LIBSUF
7510 LIBNAME=$LIBNAME
7511 SLIBPREF=$SLIBPREF
7512 SLIBSUF=$SLIBSUF
7513 EXESUF=$EXESUF
7514 EXTRA_VERSION=$extra_version
7515 CCDEP=$CCDEP
7516 CXXDEP=$CXXDEP
7517 CCDEP_FLAGS=$CCDEP_FLAGS
7518 ASDEP=$ASDEP
7519 ASDEP_FLAGS=$ASDEP_FLAGS
7520 X86ASMDEP=$X86ASMDEP
7521 X86ASMDEP_FLAGS=$X86ASMDEP_FLAGS
7522 CC_DEPFLAGS=$CC_DEPFLAGS
7523 AS_DEPFLAGS=$AS_DEPFLAGS
7524 X86ASM_DEPFLAGS=$X86ASM_DEPFLAGS
7525 HOSTCC=$host_cc
7526 HOSTLD=$host_ld
7527 HOSTCFLAGS=$host_cflags
7528 HOSTCPPFLAGS=$host_cppflags
7529 HOSTEXESUF=$HOSTEXESUF
7530 HOSTLDFLAGS=$host_ldflags
7531 HOSTEXTRALIBS=$host_extralibs
7532 DEPHOSTCC=$host_cc
7533 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
7534 HOSTCCDEP=$HOSTCCDEP
7535 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
7536 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
7537 HOSTCC_C=$HOSTCC_C
7538 HOSTCC_O=$HOSTCC_O
7539 HOSTLD_O=$HOSTLD_O
7540 TARGET_EXEC=$target_exec $target_exec_args
7541 TARGET_PATH=$target_path
7542 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
7543 CFLAGS-ffplay=${sdl2_cflags}
7544 CFLAGS_HEADERS=$CFLAGS_HEADERS
7545 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
7546 EXTRALIBS=$extralibs
7547 COMPAT_OBJS=$compat_objs
7548 INSTALL=$install
7549 LIBTARGET=${LIBTARGET}
7550 SLIBNAME=${SLIBNAME}
7551 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
7552 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
7553 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
7554 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
7555 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
7556 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
7557 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
7558 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
7559 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
7560 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
7561 NOREDZONE_FLAGS=$noredzone_flags
7562 LIBFUZZER_PATH=$libfuzzer_path
7563 IGNORE_TESTS=$ignore_tests
7564 EOF
7565
7566 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> ffbuild/config.mak' $LIBRARY_LIST
7567
7568 for entry in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
7569     eval echo "EXTRALIBS-${entry}=\$${entry}_extralibs" >> ffbuild/config.mak
7570 done
7571
7572 cat > $TMPH <<EOF
7573 /* Automatically generated by configure - do not modify! */
7574 #ifndef FFMPEG_CONFIG_H
7575 #define FFMPEG_CONFIG_H
7576 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
7577 #define FFMPEG_LICENSE "$(c_escape $license)"
7578 #define CONFIG_THIS_YEAR 2021
7579 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
7580 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
7581 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
7582 #define OS_NAME $target_os
7583 #define av_restrict $restrict_keyword
7584 #define EXTERN_PREFIX "${extern_prefix}"
7585 #define EXTERN_ASM ${extern_prefix}
7586 #define BUILDSUF "$build_suffix"
7587 #define SLIBSUF "$SLIBSUF"
7588 #define HAVE_MMX2 HAVE_MMXEXT
7589 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
7590 EOF
7591
7592 test -n "$assert_level" &&
7593     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
7594
7595 test -n "$malloc_prefix" &&
7596     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
7597
7598 if enabled x86asm; then
7599     append config_files $TMPASM
7600     cat > $TMPASM <<EOF
7601 ; Automatically generated by configure - do not modify!
7602 EOF
7603 fi
7604
7605 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
7606
7607
7608 mkdir -p doc
7609 mkdir -p tests
7610 mkdir -p tests/api
7611 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
7612
7613 print_config ARCH_   "$config_files" $ARCH_LIST
7614 print_config HAVE_   "$config_files" $HAVE_LIST
7615 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
7616                                      $CONFIG_EXTRA      \
7617                                      $ALL_COMPONENTS    \
7618
7619 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
7620 echo "endif # FFMPEG_CONFIG_MAK" >> ffbuild/config.mak
7621
7622 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
7623 cp_if_changed $TMPH config.h
7624 touch ffbuild/.config
7625
7626 enabled x86asm && cp_if_changed $TMPASM config.asm
7627
7628 cat > $TMPH <<EOF
7629 /* Generated by ffmpeg configure */
7630 #ifndef AVUTIL_AVCONFIG_H
7631 #define AVUTIL_AVCONFIG_H
7632 EOF
7633
7634 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
7635
7636 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
7637
7638 cp_if_changed $TMPH libavutil/avconfig.h
7639
7640 # full_filter_name_foo=vf_foo
7641 # full_filter_name_bar=asrc_bar
7642 # ...
7643 eval "$(sed -n "s/^extern AVFilter ff_\([avfsinkrc]\{2,5\}\)_\(.*\);/full_filter_name_\2=\1_\2/p" $source_path/libavfilter/allfilters.c)"
7644
7645 # generate the lists of enabled components
7646 print_enabled_components(){
7647     file=$1
7648     struct_name=$2
7649     name=$3
7650     shift 3
7651     echo "static const $struct_name * const $name[] = {" > $TMPH
7652     for c in $*; do
7653         if enabled $c; then
7654             case $name in
7655                 filter_list)
7656                     eval c=\$full_filter_name_${c%_filter}
7657                 ;;
7658                 indev_list)
7659                     c=${c%_indev}_demuxer
7660                 ;;
7661                 outdev_list)
7662                     c=${c%_outdev}_muxer
7663                 ;;
7664             esac
7665             printf "    &ff_%s,\n" $c >> $TMPH
7666         fi
7667     done
7668     if [ "$name" = "filter_list" ]; then
7669         for c in asrc_abuffer vsrc_buffer asink_abuffer vsink_buffer; do
7670             printf "    &ff_%s,\n" $c >> $TMPH
7671         done
7672     fi
7673     echo "    NULL };" >> $TMPH
7674     cp_if_changed $TMPH $file
7675 }
7676
7677 print_enabled_components libavfilter/filter_list.c AVFilter filter_list $FILTER_LIST
7678 print_enabled_components libavcodec/codec_list.c AVCodec codec_list $CODEC_LIST
7679 print_enabled_components libavcodec/parser_list.c AVCodecParser parser_list $PARSER_LIST
7680 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
7681 print_enabled_components libavformat/demuxer_list.c AVInputFormat demuxer_list $DEMUXER_LIST
7682 print_enabled_components libavformat/muxer_list.c AVOutputFormat muxer_list $MUXER_LIST
7683 print_enabled_components libavdevice/indev_list.c AVInputFormat indev_list $INDEV_LIST
7684 print_enabled_components libavdevice/outdev_list.c AVOutputFormat outdev_list $OUTDEV_LIST
7685 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
7686
7687 # Settings for pkg-config files
7688
7689 cat > $TMPH <<EOF
7690 # Automatically generated by configure - do not modify!
7691 shared=$shared
7692 build_suffix=$build_suffix
7693 prefix=$prefix
7694 libdir=$libdir
7695 incdir=$incdir
7696 rpath=$(enabled rpath && echo "-Wl,-rpath,\${libdir}")
7697 source_path=${source_path}
7698 LIBPREF=${LIBPREF}
7699 LIBSUF=${LIBSUF}
7700 extralibs_avutil="$avutil_extralibs"
7701 extralibs_avcodec="$avcodec_extralibs"
7702 extralibs_avformat="$avformat_extralibs"
7703 extralibs_avdevice="$avdevice_extralibs"
7704 extralibs_avfilter="$avfilter_extralibs"
7705 extralibs_avresample="$avresample_extralibs"
7706 extralibs_postproc="$postproc_extralibs"
7707 extralibs_swscale="$swscale_extralibs"
7708 extralibs_swresample="$swresample_extralibs"
7709 EOF
7710
7711 for lib in $LIBRARY_LIST; do
7712     lib_deps="$(eval echo \$${lib}_deps)"
7713     echo ${lib}_deps=\"$lib_deps\" >> $TMPH
7714 done
7715
7716 cp_if_changed $TMPH ffbuild/config.sh