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

   1 #!/bin/sh
   2 #
   3 # FFmpeg configure script
   4 #
   5 # Copyright (c) 2000-2002 Fabrice Bellard
   6 # Copyright (c) 2005-2008 Diego Biurrun
   7 # Copyright (c) 2005-2008 Mans Rullgard
   8 #
   9
  10 # Prevent locale nonsense from breaking basic text processing.
  11 LC_ALL=C
  12 export LC_ALL
  13
  14 # make sure we are running under a compatible shell
  15 # try to make this part work with most shells
  16
  17 try_exec(){
  18     echo "Trying shell $1"
  19     type "$1" > /dev/null 2>&1 && exec "$@"
  20 }
  21
  22 unset foo
  23 (: ${foo%%bar}) 2> /dev/null
  24 E1="$?"
  25
  26 (: ${foo?}) 2> /dev/null
  27 E2="$?"
  28
  29 if test "$E1" != 0 || test "$E2" = 0; then
  30     echo "Broken shell detected.  Trying alternatives."
  31     export FF_CONF_EXEC
  32     if test "0$FF_CONF_EXEC" -lt 1; then
  33         FF_CONF_EXEC=1
  34         try_exec bash "$0" "$@"
  35     fi
  36     if test "0$FF_CONF_EXEC" -lt 2; then
  37         FF_CONF_EXEC=2
  38         try_exec ksh "$0" "$@"
  39     fi
  40     if test "0$FF_CONF_EXEC" -lt 3; then
  41         FF_CONF_EXEC=3
  42         try_exec /usr/xpg4/bin/sh "$0" "$@"
  43     fi
  44     echo "No compatible shell script interpreter found."
  45     echo "This configure script requires a POSIX-compatible shell"
  46     echo "such as bash or ksh."
  47     echo "THIS IS NOT A BUG IN FFMPEG, DO NOT REPORT IT AS SUCH."
  48     echo "Instead, install a working POSIX-compatible shell."
  49     echo "Disabling this configure test will create a broken FFmpeg."
  50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
  51         echo "This bash version ($BASH_VERSION) is broken on your platform."
  52         echo "Upgrade to a later version if available."
  53     fi
  54     exit 1
  55 fi
  56
  57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
  58
  59 show_help(){
  60     cat <<EOF
  61 Usage: configure [options]
  62 Options: [defaults in brackets after descriptions]
  63
  64 Help options:
  65   --help                   print this message
  66   --quiet                  Suppress showing informative output
  67   --list-decoders          show all available decoders
  68   --list-encoders          show all available encoders
  69   --list-hwaccels          show all available hardware accelerators
  70   --list-demuxers          show all available demuxers
  71   --list-muxers            show all available muxers
  72   --list-parsers           show all available parsers
  73   --list-protocols         show all available protocols
  74   --list-bsfs              show all available bitstream filters
  75   --list-indevs            show all available input devices
  76   --list-outdevs           show all available output devices
  77   --list-filters           show all available filters
  78
  79 Standard options:
  80   --logfile=FILE           log tests and output to FILE [ffbuild/config.log]
  81   --disable-logging        do not log configure debug information
  82   --fatal-warnings         fail if any configure warning is generated
  83   --prefix=PREFIX          install in PREFIX [$prefix_default]
  84   --bindir=DIR             install binaries in DIR [PREFIX/bin]
  85   --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
  86   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/ffmpeg]
  87   --libdir=DIR             install libs in DIR [PREFIX/lib]
  88   --shlibdir=DIR           install shared libs in DIR [LIBDIR]
  89   --incdir=DIR             install includes in DIR [PREFIX/include]
  90   --mandir=DIR             install man page in DIR [PREFIX/share/man]
  91   --pkgconfigdir=DIR       install pkg-config files in DIR [LIBDIR/pkgconfig]
  92   --enable-rpath           use rpath to allow installing libraries in paths
  93                            not part of the dynamic linker search path
  94                            use rpath when linking programs (USE WITH CARE)
  95   --install-name-dir=DIR   Darwin directory name for installed targets
  96
  97 Licensing options:
  98   --enable-gpl             allow use of GPL code, the resulting libs
  99                            and binaries will be under GPL [no]
 100   --enable-version3        upgrade (L)GPL to version 3 [no]
 101   --enable-nonfree         allow use of nonfree code, the resulting libs
 102                            and binaries will be unredistributable [no]
 103
 104 Configuration options:
 105   --disable-static         do not build static libraries [no]
 106   --enable-shared          build shared libraries [no]
 107   --enable-small           optimize for size instead of speed
 108   --disable-runtime-cpudetect disable detecting CPU capabilities at runtime (smaller binary)
 109   --enable-gray            enable full grayscale support (slower color)
 110   --disable-swscale-alpha  disable alpha channel support in swscale
 111   --disable-all            disable building components, libraries and programs
 112   --disable-autodetect     disable automatically detected external libraries [no]
 113
 114 Program options:
 115   --disable-programs       do not build command line programs
 116   --disable-ffmpeg         disable ffmpeg build
 117   --disable-ffplay         disable ffplay build
 118   --disable-ffprobe        disable ffprobe build
 119
 120 Documentation options:
 121   --disable-doc            do not build documentation
 122   --disable-htmlpages      do not build HTML documentation pages
 123   --disable-manpages       do not build man documentation pages
 124   --disable-podpages       do not build POD documentation pages
 125   --disable-txtpages       do not build text documentation pages
 126
 127 Component options:
 128   --disable-avdevice       disable libavdevice build
 129   --disable-avcodec        disable libavcodec build
 130   --disable-avformat       disable libavformat build
 131   --disable-swresample     disable libswresample build
 132   --disable-swscale        disable libswscale build
 133   --disable-postproc       disable libpostproc build
 134   --disable-avfilter       disable libavfilter build
 135   --enable-avresample      enable libavresample build (deprecated) [no]
 136   --disable-pthreads       disable pthreads [autodetect]
 137   --disable-w32threads     disable Win32 threads [autodetect]
 138   --disable-os2threads     disable OS/2 threads [autodetect]
 139   --disable-network        disable network support [no]
 140   --disable-dct            disable DCT code
 141   --disable-dwt            disable DWT code
 142   --disable-error-resilience disable error resilience code
 143   --disable-lsp            disable LSP code
 144   --disable-lzo            disable LZO decoder code
 145   --disable-mdct           disable MDCT code
 146   --disable-rdft           disable RDFT code
 147   --disable-fft            disable FFT code
 148   --disable-faan           disable floating point AAN (I)DCT code
 149   --disable-pixelutils     disable pixel utils in libavutil
 150
 151 Individual component options:
 152   --disable-everything     disable all components listed below
 153   --disable-encoder=NAME   disable encoder NAME
 154   --enable-encoder=NAME    enable encoder NAME
 155   --disable-encoders       disable all encoders
 156   --disable-decoder=NAME   disable decoder NAME
 157   --enable-decoder=NAME    enable decoder NAME
 158   --disable-decoders       disable all decoders
 159   --disable-hwaccel=NAME   disable hwaccel NAME
 160   --enable-hwaccel=NAME    enable hwaccel NAME
 161   --disable-hwaccels       disable all hwaccels
 162   --disable-muxer=NAME     disable muxer NAME
 163   --enable-muxer=NAME      enable muxer NAME
 164   --disable-muxers         disable all muxers
 165   --disable-demuxer=NAME   disable demuxer NAME
 166   --enable-demuxer=NAME    enable demuxer NAME
 167   --disable-demuxers       disable all demuxers
 168   --enable-parser=NAME     enable parser NAME
 169   --disable-parser=NAME    disable parser NAME
 170   --disable-parsers        disable all parsers
 171   --enable-bsf=NAME        enable bitstream filter NAME
 172   --disable-bsf=NAME       disable bitstream filter NAME
 173   --disable-bsfs           disable all bitstream filters
 174   --enable-protocol=NAME   enable protocol NAME
 175   --disable-protocol=NAME  disable protocol NAME
 176   --disable-protocols      disable all protocols
 177   --enable-indev=NAME      enable input device NAME
 178   --disable-indev=NAME     disable input device NAME
 179   --disable-indevs         disable input devices
 180   --enable-outdev=NAME     enable output device NAME
 181   --disable-outdev=NAME    disable output device NAME
 182   --disable-outdevs        disable output devices
 183   --disable-devices        disable all devices
 184   --enable-filter=NAME     enable filter NAME
 185   --disable-filter=NAME    disable filter NAME
 186   --disable-filters        disable all filters
 187
 188 External library support:
 189
 190   Using any of the following switches will allow FFmpeg to link to the
 191   corresponding external library. All the components depending on that library
 192   will become enabled, if all their other dependencies are met and they are not
 193   explicitly disabled. E.g. --enable-libopus will enable linking to
 194   libopus and allow the libopus encoder to be built, unless it is
 195   specifically disabled with --disable-encoder=libopus.
 196
 197   Note that only the system libraries are auto-detected. All the other external
 198   libraries must be explicitly enabled.
 199
 200   Also note that the following help text describes the purpose of the libraries
 201   themselves, not all their features will necessarily be usable by FFmpeg.
 202
 203   --disable-alsa           disable ALSA support [autodetect]
 204   --disable-appkit         disable Apple AppKit framework [autodetect]
 205   --disable-avfoundation   disable Apple AVFoundation framework [autodetect]
 206   --enable-avisynth        enable reading of AviSynth script files [no]
 207   --disable-bzlib          disable bzlib [autodetect]
 208   --disable-coreimage      disable Apple CoreImage framework [autodetect]
 209   --enable-chromaprint     enable audio fingerprinting with chromaprint [no]
 210   --enable-frei0r          enable frei0r video filtering [no]
 211   --enable-gcrypt          enable gcrypt, needed for rtmp(t)e support
 212                            if openssl, librtmp or gmp is not used [no]
 213   --enable-gmp             enable gmp, needed for rtmp(t)e support
 214                            if openssl or librtmp is not used [no]
 215   --enable-gnutls          enable gnutls, needed for https support
 216                            if openssl, libtls or mbedtls is not used [no]
 217   --disable-iconv          disable iconv [autodetect]
 218   --enable-jni             enable JNI support [no]
 219   --enable-ladspa          enable LADSPA audio filtering [no]
 220   --enable-libaom          enable AV1 video encoding/decoding via libaom [no]
 221   --enable-libaribb24      enable ARIB text and caption decoding via libaribb24 [no]
 222   --enable-libass          enable libass subtitles rendering,
 223                            needed for subtitles and ass filter [no]
 224   --enable-libbluray       enable BluRay reading using libbluray [no]
 225   --enable-libbs2b         enable bs2b DSP library [no]
 226   --enable-libcaca         enable textual display using libcaca [no]
 227   --enable-libcelt         enable CELT decoding via libcelt [no]
 228   --enable-libcdio         enable audio CD grabbing with libcdio [no]
 229   --enable-libcodec2       enable codec2 en/decoding using libcodec2 [no]
 230   --enable-libdav1d        enable AV1 decoding via libdav1d [no]
 231   --enable-libdavs2        enable AVS2 decoding via libdavs2 [no]
 232   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 233                            and libraw1394 [no]
 234   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
 235   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
 236   --enable-libfontconfig   enable libfontconfig, useful for drawtext filter [no]
 237   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
 238   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
 239   --enable-libglslang      enable GLSL->SPIRV compilation via libglslang [no]
 240   --enable-libgme          enable Game Music Emu via libgme [no]
 241   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 242   --enable-libiec61883     enable iec61883 via libiec61883 [no]
 243   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 244   --enable-libjack         enable JACK audio sound server [no]
 245   --enable-libklvanc       enable Kernel Labs VANC processing [no]
 246   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
 247   --enable-liblensfun      enable lensfun lens correction [no]
 248   --enable-libmodplug      enable ModPlug via libmodplug [no]
 249   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 250   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 251   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 252   --enable-libopencv       enable video filtering via libopencv [no]
 253   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
 254   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 255   --enable-libopenmpt      enable decoding tracked files via libopenmpt [no]
 256   --enable-libopenvino     enable OpenVINO as a DNN module backend
 257                            for DNN based filters like dnn_processing [no]
 258   --enable-libopus         enable Opus de/encoding via libopus [no]
 259   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 260   --enable-librabbitmq     enable RabbitMQ library [no]
 261   --enable-librav1e        enable AV1 encoding via rav1e [no]
 262   --enable-librsvg         enable SVG rasterization via librsvg [no]
 263   --enable-librubberband   enable rubberband needed for rubberband filter [no]
 264   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 265   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 266   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
 267   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
 268   --enable-libsoxr         enable Include libsoxr resampling [no]
 269   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 270   --enable-libsrt          enable Haivision SRT protocol via libsrt [no]
 271   --enable-libssh          enable SFTP protocol via libssh [no]
 272   --enable-libsvtav1       enable AV1 encoding via SVT [no]
 273   --enable-libtensorflow   enable TensorFlow as a DNN module backend
 274                            for DNN based filters like sr [no]
 275   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
 276   --enable-libtheora       enable Theora encoding via libtheora [no]
 277   --enable-libtls          enable LibreSSL (via libtls), needed for https support
 278                            if openssl, gnutls or mbedtls is not used [no]
 279   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 280   --enable-libuavs3d       enable AVS3 decoding via libuavs3d [no]
 281   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 282   --enable-libvidstab      enable video stabilization using vid.stab [no]
 283   --enable-libvmaf         enable vmaf filter via libvmaf [no]
 284   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 285   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 286                            native implementation exists [no]
 287   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 288   --enable-libwebp         enable WebP encoding via libwebp [no]
 289   --enable-libx264         enable H.264 encoding via x264 [no]
 290   --enable-libx265         enable HEVC encoding via x265 [no]
 291   --enable-libxavs         enable AVS encoding via xavs [no]
 292   --enable-libxavs2        enable AVS2 encoding via xavs2 [no]
 293   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
 294   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
 295   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
 296   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
 297   --enable-libxvid         enable Xvid encoding via xvidcore,
 298                            native MPEG-4/Xvid encoder exists [no]
 299   --enable-libxml2         enable XML parsing using the C library libxml2, needed
 300                            for dash demuxing support [no]
 301   --enable-libzimg         enable z.lib, needed for zscale filter [no]
 302   --enable-libzmq          enable message passing via libzmq [no]
 303   --enable-libzvbi         enable teletext support via libzvbi [no]
 304   --enable-lv2             enable LV2 audio filtering [no]
 305   --disable-lzma           disable lzma [autodetect]
 306   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
 307   --enable-mbedtls         enable mbedTLS, needed for https support
 308                            if openssl, gnutls or libtls is not used [no]
 309   --enable-mediacodec      enable Android MediaCodec support [no]
 310   --enable-mediafoundation enable encoding via MediaFoundation [auto]
 311   --enable-libmysofa       enable libmysofa, needed for sofalizer filter [no]
 312   --enable-openal          enable OpenAL 1.1 capture support [no]
 313   --enable-opencl          enable OpenCL processing [no]
 314   --enable-opengl          enable OpenGL rendering [no]
 315   --enable-openssl         enable openssl, needed for https support
 316                            if gnutls, libtls or mbedtls is not used [no]
 317   --enable-pocketsphinx    enable PocketSphinx, needed for asr filter [no]
 318   --disable-sndio          disable sndio support [autodetect]
 319   --disable-schannel       disable SChannel SSP, needed for TLS support on
 320                            Windows if openssl and gnutls are not used [autodetect]
 321   --disable-sdl2           disable sdl2 [autodetect]
 322   --disable-securetransport disable Secure Transport, needed for TLS support
 323                            on OSX if openssl and gnutls are not used [autodetect]
 324   --enable-vapoursynth     enable VapourSynth demuxer [no]
 325   --enable-vulkan          enable Vulkan code [no]
 326   --disable-xlib           disable xlib [autodetect]
 327   --disable-zlib           disable zlib [autodetect]
 328
 329   The following libraries provide various hardware acceleration features:
 330   --disable-amf            disable AMF video encoding code [autodetect]
 331   --disable-audiotoolbox   disable Apple AudioToolbox code [autodetect]
 332   --enable-cuda-nvcc       enable Nvidia CUDA compiler [no]
 333   --disable-cuda-llvm      disable CUDA compilation using clang [autodetect]
 334   --disable-cuvid          disable Nvidia CUVID support [autodetect]
 335   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
 336   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
 337   --disable-ffnvcodec      disable dynamically linked Nvidia code [autodetect]
 338   --enable-libdrm          enable DRM code (Linux) [no]
 339   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
 340   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
 341   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
 342   --disable-nvdec          disable Nvidia video decoding acceleration (via hwaccel) [autodetect]
 343   --disable-nvenc          disable Nvidia video encoding code [autodetect]
 344   --enable-omx             enable OpenMAX IL code [no]
 345   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
 346   --enable-rkmpp           enable Rockchip Media Process Platform code [no]
 347   --disable-v4l2-m2m       disable V4L2 mem2mem code [autodetect]
 348   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
 349   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
 350   --disable-videotoolbox   disable VideoToolbox code [autodetect]
 351
 352 Toolchain options:
 353   --arch=ARCH              select architecture [$arch]
 354   --cpu=CPU                select the minimum required CPU (affects
 355                            instruction selection, may crash on older CPUs)
 356   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 357   --progs-suffix=SUFFIX    program name suffix []
 358   --enable-cross-compile   assume a cross-compiler is used
 359   --sysroot=PATH           root of cross-build tree
 360   --sysinclude=PATH        location of cross-build system headers
 361   --target-os=OS           compiler targets OS [$target_os]
 362   --target-exec=CMD        command to run executables on target
 363   --target-path=DIR        path to view of build directory on target
 364   --target-samples=DIR     path to samples directory on target
 365   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 366   --toolchain=NAME         set tool defaults according to NAME
 367                            (gcc-asan, clang-asan, gcc-msan, clang-msan,
 368                            gcc-tsan, clang-tsan, gcc-usan, clang-usan,
 369                            valgrind-massif, valgrind-memcheck,
 370                            msvc, icl, gcov, llvm-cov, hardened)
 371   --nm=NM                  use nm tool NM [$nm_default]
 372   --ar=AR                  use archive tool AR [$ar_default]
 373   --as=AS                  use assembler AS [$as_default]
 374   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
 375   --strip=STRIP            use strip tool STRIP [$strip_default]
 376   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 377   --x86asmexe=EXE          use nasm-compatible assembler EXE [$x86asmexe_default]
 378   --cc=CC                  use C compiler CC [$cc_default]
 379   --cxx=CXX                use C compiler CXX [$cxx_default]
 380   --objcc=OCC              use ObjC compiler OCC [$cc_default]
 381   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 382   --nvcc=NVCC              use Nvidia CUDA compiler NVCC or clang [$nvcc_default]
 383   --ld=LD                  use linker LD [$ld_default]
 384   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 385   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 386   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 387   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
 388   --host-cc=HOSTCC         use host C compiler HOSTCC
 389   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 390   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 391   --host-ld=HOSTLD         use host linker HOSTLD
 392   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 393   --host-extralibs=HLIBS   use libs HLIBS when linking for host
 394   --host-os=OS             compiler host OS [$target_os]
 395   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 396   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 397   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
 398   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 399   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 400   --extra-ldsoflags=ELDFLAGS add ELDFLAGS to LDSOFLAGS [$LDSOFLAGS]
 401   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 402   --extra-version=STRING   version string suffix []
 403   --optflags=OPTFLAGS      override optimization-related compiler flags
 404   --nvccflags=NVCCFLAGS    override nvcc flags [$nvccflags_default]
 405   --build-suffix=SUFFIX    library name suffix []
 406   --enable-pic             build position-independent code
 407   --enable-thumb           compile for Thumb instruction set
 408   --enable-lto             use link-time optimization
 409   --env="ENV=override"     override the environment variables
 410
 411 Advanced options (experts only):
 412   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 413   --custom-allocator=NAME  use a supported custom allocator
 414   --disable-symver         disable symbol versioning
 415   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 416   --disable-safe-bitstream-reader
 417                            disable buffer boundary checking in bitreaders
 418                            (faster, but may crash)
 419   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
 420
 421 Optimization options (experts only):
 422   --disable-asm            disable all assembly optimizations
 423   --disable-altivec        disable AltiVec optimizations
 424   --disable-vsx            disable VSX optimizations
 425   --disable-power8         disable POWER8 optimizations
 426   --disable-amd3dnow       disable 3DNow! optimizations
 427   --disable-amd3dnowext    disable 3DNow! extended optimizations
 428   --disable-mmx            disable MMX optimizations
 429   --disable-mmxext         disable MMXEXT optimizations
 430   --disable-sse            disable SSE optimizations
 431   --disable-sse2           disable SSE2 optimizations
 432   --disable-sse3           disable SSE3 optimizations
 433   --disable-ssse3          disable SSSE3 optimizations
 434   --disable-sse4           disable SSE4 optimizations
 435   --disable-sse42          disable SSE4.2 optimizations
 436   --disable-avx            disable AVX optimizations
 437   --disable-xop            disable XOP optimizations
 438   --disable-fma3           disable FMA3 optimizations
 439   --disable-fma4           disable FMA4 optimizations
 440   --disable-avx2           disable AVX2 optimizations
 441   --disable-avx512         disable AVX-512 optimizations
 442   --disable-aesni          disable AESNI optimizations
 443   --disable-armv5te        disable armv5te optimizations
 444   --disable-armv6          disable armv6 optimizations
 445   --disable-armv6t2        disable armv6t2 optimizations
 446   --disable-vfp            disable VFP optimizations
 447   --disable-neon           disable NEON optimizations
 448   --disable-inline-asm     disable use of inline assembly
 449   --disable-x86asm         disable use of standalone x86 assembly
 450   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
 451   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 452   --disable-msa            disable MSA optimizations
 453   --disable-msa2           disable MSA2 optimizations
 454   --disable-mipsfpu        disable floating point MIPS optimizations
 455   --disable-mmi            disable Loongson SIMD optimizations
 456   --disable-fast-unaligned consider unaligned accesses slow
 457
 458 Developer options (useful when working on FFmpeg itself):
 459   --disable-debug          disable debugging symbols
 460   --enable-debug=LEVEL     set the debug level [$debuglevel]
 461   --disable-optimizations  disable compiler optimizations
 462   --enable-extra-warnings  enable more compiler warnings
 463   --disable-stripping      disable stripping of executables and shared libraries
 464   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 465                            2 causes a slowdown at runtime.
 466   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 467   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 468                            leaks and errors, using the specified valgrind binary.
 469                            Cannot be combined with --target-exec
 470   --enable-ftrapv          Trap arithmetic overflows
 471   --samples=PATH           location of test samples for FATE, if not set use
 472                            \$FATE_SAMPLES at make invocation time.
 473   --enable-neon-clobber-test check NEON registers for clobbering (should be
 474                            used only for debugging purposes)
 475   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 476                            should be used only for debugging purposes)
 477   --enable-random          randomly enable/disable components
 478   --disable-random
 479   --enable-random=LIST     randomly enable/disable specific components or
 480   --disable-random=LIST    component groups. LIST is a comma-separated list
 481                            of NAME[:PROB] entries where NAME is a component
 482                            (group) and PROB the probability associated with
 483                            NAME (default 0.5).
 484   --random-seed=VALUE      seed value for --enable/disable-random
 485   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 486                            (only applies to --disable-optimizations builds)
 487   --enable-ossfuzz         Enable building fuzzer tool
 488   --libfuzzer=PATH         path to libfuzzer
 489   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
 490                            in the name) of tests whose result is ignored
 491   --enable-linux-perf      enable Linux Performance Monitor API
 492   --disable-large-tests    disable tests that use a large amount of memory
 493
 494 NOTE: Object files are built at the place where configure is launched.
 495 EOF
 496   exit 0
 497 }
 498
 499 if test -t 1 && which tput >/dev/null 2>&1; then
 500     ncolors=$(tput colors)
 501     if test -n "$ncolors" && test $ncolors -ge 8; then
 502         bold_color=$(tput bold)
 503         warn_color=$(tput setaf 3)
 504         error_color=$(tput setaf 1)
 505         reset_color=$(tput sgr0)
 506     fi
 507     # 72 used instead of 80 since that's the default of pr
 508     ncols=$(tput cols)
 509 fi
 510 : ${ncols:=72}
 511
 512 log(){
 513     echo "$@" >> $logfile
 514 }
 515
 516 log_file(){
 517     log BEGIN "$1"
 518     log_file_i=1
 519     while IFS= read -r log_file_line; do
 520         printf '%5d\t%s\n' "$log_file_i" "$log_file_line"
 521         log_file_i=$(($log_file_i+1))
 522     done < "$1" >> "$logfile"
 523     log END "$1"
 524 }
 525
 526 warn(){
 527     log "WARNING: $*"
 528     WARNINGS="${WARNINGS}WARNING: $*\n"
 529 }
 530
 531 die(){
 532     log "$@"
 533     echo "$error_color$bold_color$@$reset_color"
 534     cat <<EOF
 535
 536 If you think configure made a mistake, make sure you are using the latest
 537 version from Git.  If the latest version fails, report the problem to the
 538 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 539 EOF
 540     if disabled logging; then
 541         cat <<EOF
 542 Rerun configure with logging enabled (do not use --disable-logging), and
 543 include the log this produces with your report.
 544 EOF
 545     else
 546         cat <<EOF
 547 Include the log file "$logfile" produced by configure as this will help
 548 solve the problem.
 549 EOF
 550     fi
 551     exit 1
 552 }
 553
 554 # Avoid locale weirdness, besides we really just want to translate ASCII.
 555 toupper(){
 556     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 557 }
 558
 559 tolower(){
 560     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 561 }
 562
 563 c_escape(){
 564     echo "$*" | sed 's/["\\]/\\\0/g'
 565 }
 566
 567 sh_quote(){
 568     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 569     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 570     echo "$v"
 571 }
 572
 573 cleanws(){
 574     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
 575 }
 576
 577 filter(){
 578     pat=$1
 579     shift
 580     for v; do
 581         eval "case '$v' in $pat) printf '%s ' '$v' ;; esac"
 582     done
 583 }
 584
 585 filter_out(){
 586     pat=$1
 587     shift
 588     for v; do
 589         eval "case '$v' in $pat) ;; *) printf '%s ' '$v' ;; esac"
 590     done
 591 }
 592
 593 map(){
 594     m=$1
 595     shift
 596     for v; do eval $m; done
 597 }
 598
 599 add_suffix(){
 600     suffix=$1
 601     shift
 602     for v; do echo ${v}${suffix}; done
 603 }
 604
 605 remove_suffix(){
 606     suffix=$1
 607     shift
 608     for v; do echo ${v%$suffix}; done
 609 }
 610
 611 set_all(){
 612     value=$1
 613     shift
 614     for var in $*; do
 615         eval $var=$value
 616     done
 617 }
 618
 619 set_weak(){
 620     value=$1
 621     shift
 622     for var; do
 623         eval : \${$var:=$value}
 624     done
 625 }
 626
 627 sanitize_var_name(){
 628     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 629 }
 630
 631 set_sanitized(){
 632     var=$1
 633     shift
 634     eval $(sanitize_var_name "$var")='$*'
 635 }
 636
 637 get_sanitized(){
 638     eval echo \$$(sanitize_var_name "$1")
 639 }
 640
 641 pushvar(){
 642     for pvar in $*; do
 643         eval level=\${${pvar}_level:=0}
 644         eval ${pvar}_${level}="\$$pvar"
 645         eval ${pvar}_level=$(($level+1))
 646     done
 647 }
 648
 649 popvar(){
 650     for pvar in $*; do
 651         eval level=\${${pvar}_level:-0}
 652         test $level = 0 && continue
 653         eval level=$(($level-1))
 654         eval $pvar="\${${pvar}_${level}}"
 655         eval ${pvar}_level=$level
 656         eval unset ${pvar}_${level}
 657     done
 658 }
 659
 660 request(){
 661     for var in $*; do
 662         eval ${var}_requested=yes
 663         eval $var=
 664     done
 665 }
 666
 667 warn_if_gets_disabled(){
 668     for var in $*; do
 669         WARN_IF_GETS_DISABLED_LIST="$WARN_IF_GETS_DISABLED_LIST $var"
 670     done
 671 }
 672
 673 enable(){
 674     set_all yes $*
 675 }
 676
 677 disable(){
 678     set_all no $*
 679 }
 680
 681 disable_with_reason(){
 682     disable $1
 683     eval "${1}_disable_reason=\"$2\""
 684     if requested $1; then
 685         die "ERROR: $1 requested, but $2"
 686     fi
 687 }
 688
 689 enable_weak(){
 690     set_weak yes $*
 691 }
 692
 693 disable_weak(){
 694     set_weak no $*
 695 }
 696
 697 enable_sanitized(){
 698     for var; do
 699         enable $(sanitize_var_name $var)
 700     done
 701 }
 702
 703 disable_sanitized(){
 704     for var; do
 705         disable $(sanitize_var_name $var)
 706     done
 707 }
 708
 709 do_enable_deep(){
 710     for var; do
 711         enabled $var && continue
 712         set -- $var
 713         eval enable_deep \$${var}_select
 714         var=$1
 715         eval enable_deep_weak \$${var}_suggest
 716     done
 717 }
 718
 719 enable_deep(){
 720     do_enable_deep $*
 721     enable $*
 722 }
 723
 724 enable_deep_weak(){
 725     for var; do
 726         disabled $var && continue
 727         set -- $var
 728         do_enable_deep $var
 729         var=$1
 730         enable_weak $var
 731     done
 732 }
 733
 734 requested(){
 735     test "${1#!}" = "$1" && op="=" || op="!="
 736     eval test "x\$${1#!}_requested" $op "xyes"
 737 }
 738
 739 enabled(){
 740     test "${1#!}" = "$1" && op="=" || op="!="
 741     eval test "x\$${1#!}" $op "xyes"
 742 }
 743
 744 disabled(){
 745     test "${1#!}" = "$1" && op="=" || op="!="
 746     eval test "x\$${1#!}" $op "xno"
 747 }
 748
 749 enabled_all(){
 750     for opt; do
 751         enabled $opt || return 1
 752     done
 753 }
 754
 755 disabled_all(){
 756     for opt; do
 757         disabled $opt || return 1
 758     done
 759 }
 760
 761 enabled_any(){
 762     for opt; do
 763         enabled $opt && return 0
 764     done
 765 }
 766
 767 disabled_any(){
 768     for opt; do
 769         disabled $opt && return 0
 770     done
 771     return 1
 772 }
 773
 774 set_default(){
 775     for opt; do
 776         eval : \${$opt:=\$${opt}_default}
 777     done
 778 }
 779
 780 is_in(){
 781     value=$1
 782     shift
 783     for var in $*; do
 784         [ $var = $value ] && return 0
 785     done
 786     return 1
 787 }
 788
 789 # The cfg loop is very hot (several thousands iterations), and in bash also
 790 # potentialy quite slow. Try to abort the iterations early, preferably without
 791 # calling functions. 70%+ of the time cfg is already done or without deps.
 792 check_deps(){
 793     for cfg; do
 794         eval [ x\$${cfg}_checking = xdone ] && continue
 795         eval [ x\$${cfg}_checking = xinprogress ] && die "Circular dependency for $cfg."
 796
 797         eval "
 798         dep_all=\$${cfg}_deps
 799         dep_any=\$${cfg}_deps_any
 800         dep_con=\$${cfg}_conflict
 801         dep_sel=\$${cfg}_select
 802         dep_sgs=\$${cfg}_suggest
 803         dep_ifa=\$${cfg}_if
 804         dep_ifn=\$${cfg}_if_any
 805         "
 806
 807         # most of the time here $cfg has no deps - avoid costly no-op work
 808         if [ "$dep_all$dep_any$dep_con$dep_sel$dep_sgs$dep_ifa$dep_ifn" ]; then
 809             eval ${cfg}_checking=inprogress
 810
 811             set -- $cfg "$dep_all" "$dep_any" "$dep_con" "$dep_sel" "$dep_sgs" "$dep_ifa" "$dep_ifn"
 812             check_deps $dep_all $dep_any $dep_con $dep_sel $dep_sgs $dep_ifa $dep_ifn
 813             cfg=$1; dep_all=$2; dep_any=$3; dep_con=$4; dep_sel=$5 dep_sgs=$6; dep_ifa=$7; dep_ifn=$8
 814
 815             [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 816             [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 817             enabled_all  $dep_all || { disable_with_reason $cfg "not all dependencies are satisfied: $dep_all"; }
 818             enabled_any  $dep_any || { disable_with_reason $cfg "not any dependency is satisfied: $dep_any"; }
 819             disabled_all $dep_con || { disable_with_reason $cfg "some conflicting dependencies are unsatisfied: $dep_con"; }
 820             disabled_any $dep_sel && { disable_with_reason $cfg "some selected dependency is unsatisfied: $dep_sel"; }
 821
 822             enabled $cfg && enable_deep_weak $dep_sel $dep_sgs
 823
 824             for dep in $dep_all $dep_any $dep_sel $dep_sgs; do
 825                 # filter out library deps, these do not belong in extralibs
 826                 is_in $dep $LIBRARY_LIST && continue
 827                 enabled $dep && eval append ${cfg}_extralibs ${dep}_extralibs
 828             done
 829         fi
 830
 831         eval ${cfg}_checking=done
 832     done
 833 }
 834
 835 print_config(){
 836     pfx=$1
 837     files=$2
 838     shift 2
 839     map 'eval echo "$v \${$v:-no}"' "$@" |
 840     awk "BEGIN { split(\"$files\", files) }
 841         {
 842             c = \"$pfx\" toupper(\$1);
 843             v = \$2;
 844             sub(/yes/, 1, v);
 845             sub(/no/,  0, v);
 846             for (f in files) {
 847                 file = files[f];
 848                 if (file ~ /\\.h\$/) {
 849                     printf(\"#define %s %d\\n\", c, v) >>file;
 850                 } else if (file ~ /\\.asm\$/) {
 851                     printf(\"%%define %s %d\\n\", c, v) >>file;
 852                 } else if (file ~ /\\.mak\$/) {
 853                     n = -v ? \"\" : \"!\";
 854                     printf(\"%s%s=yes\\n\", n, c) >>file;
 855                 } else if (file ~ /\\.texi\$/) {
 856                     pre = -v ? \"\" : \"@c \";
 857                     yesno = \$2;
 858                     c2 = tolower(c);
 859                     gsub(/_/, \"-\", c2);
 860                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 861                 }
 862             }
 863         }"
 864 }
 865
 866 print_enabled(){
 867     suf=$1
 868     shift
 869     for v; do
 870         enabled $v && printf "%s\n" ${v%$suf}
 871     done
 872 }
 873
 874 append(){
 875     var=$1
 876     shift
 877     eval "$var=\"\$$var $*\""
 878 }
 879
 880 prepend(){
 881     var=$1
 882     shift
 883     eval "$var=\"$* \$$var\""
 884 }
 885
 886 reverse () {
 887     eval '
 888         reverse_out=
 889         for v in $'$1'; do
 890             reverse_out="$v $reverse_out"
 891         done
 892         '$1'=$reverse_out
 893     '
 894 }
 895
 896 # keeps the last occurence of each non-unique item
 897 unique(){
 898     unique_out=
 899     eval unique_in=\$$1
 900     reverse unique_in
 901     for v in $unique_in; do
 902         # " $unique_out" +space such that every item is surrounded with spaces
 903         case " $unique_out" in *" $v "*) continue; esac  # already in list
 904         unique_out="$unique_out$v "
 905     done
 906     reverse unique_out
 907     eval $1=\$unique_out
 908 }
 909
 910 resolve(){
 911     resolve_out=
 912     eval resolve_in=\$$1
 913     for v in $resolve_in; do
 914         eval 'resolve_out="$resolve_out$'$v' "'
 915     done
 916     eval $1=\$resolve_out
 917 }
 918
 919 add_cppflags(){
 920     append CPPFLAGS "$@"
 921 }
 922
 923 add_cflags(){
 924     append CFLAGS $($cflags_filter "$@")
 925 }
 926
 927 add_cflags_headers(){
 928     append CFLAGS_HEADERS $($cflags_filter "$@")
 929 }
 930
 931 add_cxxflags(){
 932     append CXXFLAGS $($cflags_filter "$@")
 933 }
 934
 935 add_objcflags(){
 936     append OBJCFLAGS $($objcflags_filter "$@")
 937 }
 938
 939 add_asflags(){
 940     append ASFLAGS $($asflags_filter "$@")
 941 }
 942
 943 add_ldflags(){
 944     append LDFLAGS $($ldflags_filter "$@")
 945 }
 946
 947 add_ldexeflags(){
 948     append LDEXEFLAGS $($ldflags_filter "$@")
 949 }
 950
 951 add_ldsoflags(){
 952     append LDSOFLAGS $($ldflags_filter "$@")
 953 }
 954
 955 add_extralibs(){
 956     prepend extralibs $($ldflags_filter "$@")
 957 }
 958
 959 add_stripflags(){
 960     append ASMSTRIPFLAGS "$@"
 961 }
 962
 963 add_host_cppflags(){
 964     append host_cppflags "$@"
 965 }
 966
 967 add_host_cflags(){
 968     append host_cflags $($host_cflags_filter "$@")
 969 }
 970
 971 add_host_ldflags(){
 972     append host_ldflags $($host_ldflags_filter "$@")
 973 }
 974
 975 add_compat(){
 976     append compat_objs $1
 977     shift
 978     map 'add_cppflags -D$v' "$@"
 979 }
 980
 981 test_cmd(){
 982     log "$@"
 983     "$@" >> $logfile 2>&1
 984 }
 985
 986 test_stat(){
 987     log test_stat "$@"
 988     stat "$1" >> $logfile 2>&1
 989 }
 990
 991 cc_e(){
 992     eval printf '%s\\n' $CC_E
 993 }
 994
 995 cc_o(){
 996     eval printf '%s\\n' $CC_O
 997 }
 998
 999 as_o(){
1000     eval printf '%s\\n' $AS_O
1001 }
1002
1003 x86asm_o(){
1004     eval printf '%s\\n' $X86ASM_O
1005 }
1006
1007 ld_o(){
1008     eval printf '%s\\n' $LD_O
1009 }
1010
1011 hostcc_e(){
1012     eval printf '%s\\n' $HOSTCC_E
1013 }
1014
1015 hostcc_o(){
1016     eval printf '%s\\n' $HOSTCC_O
1017 }
1018
1019 nvcc_o(){
1020     eval printf '%s\\n' $NVCC_O
1021 }
1022
1023 test_cc(){
1024     log test_cc "$@"
1025     cat > $TMPC
1026     log_file $TMPC
1027     test_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
1028 }
1029
1030 test_cxx(){
1031     log test_cxx "$@"
1032     cat > $TMPCPP
1033     log_file $TMPCPP
1034     test_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
1035 }
1036
1037 test_objcc(){
1038     log test_objcc "$@"
1039     cat > $TMPM
1040     log_file $TMPM
1041     test_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
1042 }
1043
1044 test_nvcc(){
1045     log test_nvcc "$@"
1046     cat > $TMPCU
1047     log_file $TMPCU
1048     tmpcu_=$TMPCU
1049     tmpo_=$TMPO
1050     [ -x "$(command -v cygpath)" ] && tmpcu_=$(cygpath -m $tmpcu_) && tmpo_=$(cygpath -m $tmpo_)
1051     test_cmd $nvcc $nvccflags "$@" $NVCC_C $(nvcc_o $tmpo_) $tmpcu_
1052 }
1053
1054 check_nvcc() {
1055     log check_nvcc "$@"
1056     name=$1
1057     shift 1
1058     disabled $name && return
1059     disable $name
1060     test_nvcc "$@" <<EOF && enable $name
1061 extern "C" {
1062     __global__ void hello(unsigned char *data) {}
1063 }
1064 EOF
1065 }
1066
1067 test_cpp(){
1068     log test_cpp "$@"
1069     cat > $TMPC
1070     log_file $TMPC
1071     test_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
1072 }
1073
1074 test_as(){
1075     log test_as "$@"
1076     cat > $TMPS
1077     log_file $TMPS
1078     test_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
1079 }
1080
1081 test_x86asm(){
1082     log test_x86asm "$@"
1083     echo "$1" > $TMPASM
1084     log_file $TMPASM
1085     shift
1086     test_cmd $x86asmexe $X86ASMFLAGS -Werror "$@" $(x86asm_o $TMPO) $TMPASM
1087 }
1088
1089 check_cmd(){
1090     log check_cmd "$@"
1091     cmd=$1
1092     disabled $cmd && return
1093     disable $cmd
1094     test_cmd $@ && enable $cmd
1095 }
1096
1097 check_as(){
1098     log check_as "$@"
1099     name=$1
1100     code=$2
1101     shift 2
1102     disable $name
1103     test_as $@ <<EOF && enable $name
1104 $code
1105 EOF
1106 }
1107
1108 check_inline_asm(){
1109     log check_inline_asm "$@"
1110     name="$1"
1111     code="$2"
1112     shift 2
1113     disable $name
1114     test_cc "$@" <<EOF && enable $name
1115 void foo(void){ __asm__ volatile($code); }
1116 EOF
1117 }
1118
1119 check_inline_asm_flags(){
1120     log check_inline_asm_flags "$@"
1121     name="$1"
1122     code="$2"
1123     flags=''
1124     shift 2
1125     while [ "$1" != "" ]; do
1126       append flags $1
1127       shift
1128     done;
1129     disable $name
1130     cat > $TMPC <<EOF
1131 void foo(void){ __asm__ volatile($code); }
1132 EOF
1133     log_file $TMPC
1134     test_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
1135     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
1136 }
1137
1138 check_insn(){
1139     log check_insn "$@"
1140     check_inline_asm ${1}_inline "\"$2\""
1141     check_as ${1}_external "$2"
1142 }
1143
1144 check_x86asm(){
1145     log check_x86asm "$@"
1146     name=$1
1147     shift
1148     disable $name
1149     test_x86asm "$@" && enable $name
1150 }
1151
1152 test_ld(){
1153     log test_ld "$@"
1154     type=$1
1155     shift 1
1156     flags=$(filter_out '-l*|*.so' $@)
1157     libs=$(filter '-l*|*.so' $@)
1158     test_$type $($cflags_filter $flags) || return
1159     flags=$($ldflags_filter $flags)
1160     libs=$($ldflags_filter $libs)
1161     test_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
1162 }
1163
1164 check_ld(){
1165     log check_ld "$@"
1166     type=$1
1167     name=$2
1168     shift 2
1169     disable $name
1170     test_ld $type $@ && enable $name
1171 }
1172
1173 print_include(){
1174     hdr=$1
1175     test "${hdr%.h}" = "${hdr}" &&
1176         echo "#include $hdr"    ||
1177         echo "#include <$hdr>"
1178 }
1179
1180 test_code(){
1181     log test_code "$@"
1182     check=$1
1183     headers=$2
1184     code=$3
1185     shift 3
1186     {
1187         for hdr in $headers; do
1188             print_include $hdr
1189         done
1190         echo "int main(void) { $code; return 0; }"
1191     } | test_$check "$@"
1192 }
1193
1194 check_cppflags(){
1195     log check_cppflags "$@"
1196     test_cpp "$@" <<EOF && append CPPFLAGS "$@"
1197 #include <stdlib.h>
1198 EOF
1199 }
1200
1201 test_cflags(){
1202     log test_cflags "$@"
1203     set -- $($cflags_filter "$@")
1204     test_cc "$@" <<EOF
1205 int x;
1206 EOF
1207 }
1208
1209 check_cflags(){
1210     log check_cflags "$@"
1211     test_cflags "$@" && add_cflags "$@"
1212 }
1213
1214 check_cxxflags(){
1215     log check_cxxflags "$@"
1216     set -- $($cflags_filter "$@")
1217     test_cxx "$@" <<EOF && append CXXFLAGS "$@"
1218 int x;
1219 EOF
1220 }
1221
1222 test_objcflags(){
1223     log test_objcflags "$@"
1224     set -- $($objcflags_filter "$@")
1225     test_objcc "$@" <<EOF
1226 int x;
1227 EOF
1228 }
1229
1230 check_objcflags(){
1231     log check_objcflags "$@"
1232     test_objcflags "$@" && add_objcflags "$@"
1233 }
1234
1235 test_ldflags(){
1236     log test_ldflags "$@"
1237     set -- $($ldflags_filter "$@")
1238     test_ld "cc" "$@" <<EOF
1239 int main(void){ return 0; }
1240 EOF
1241 }
1242
1243 check_ldflags(){
1244     log check_ldflags "$@"
1245     test_ldflags "$@" && add_ldflags "$@"
1246 }
1247
1248 test_stripflags(){
1249     log test_stripflags "$@"
1250     # call test_cc to get a fresh TMPO
1251     test_cc <<EOF
1252 int main(void) { return 0; }
1253 EOF
1254     test_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1255 }
1256
1257 check_stripflags(){
1258     log check_stripflags "$@"
1259     test_stripflags "$@" && add_stripflags "$@"
1260 }
1261
1262 check_headers(){
1263     log check_headers "$@"
1264     headers=$1
1265     shift
1266     disable_sanitized $headers
1267     {
1268         for hdr in $headers; do
1269             print_include $hdr
1270         done
1271         echo "int x;"
1272     } | test_cpp "$@" && enable_sanitized $headers
1273 }
1274
1275 check_header_objcc(){
1276     log check_header_objcc "$@"
1277     rm -f -- "$TMPO"
1278     header=$1
1279     shift
1280     disable_sanitized $header
1281     {
1282        echo "#include <$header>"
1283        echo "int main(void) { return 0; }"
1284     } | test_objcc && test_stat "$TMPO" && enable_sanitized $header
1285 }
1286
1287 check_apple_framework(){
1288     log check_apple_framework "$@"
1289     framework="$1"
1290     name="$(tolower $framework)"
1291     header="${framework}/${framework}.h"
1292     disable $name
1293     check_header_objcc $header &&
1294         enable $name && eval ${name}_extralibs='"-framework $framework"'
1295 }
1296
1297 check_func(){
1298     log check_func "$@"
1299     func=$1
1300     shift
1301     disable $func
1302     test_ld "cc" "$@" <<EOF && enable $func
1303 extern int $func();
1304 int main(void){ $func(); }
1305 EOF
1306 }
1307
1308 check_complexfunc(){
1309     log check_complexfunc "$@"
1310     func=$1
1311     narg=$2
1312     shift 2
1313     test $narg = 2 && args="f, g" || args="f * I"
1314     disable $func
1315     test_ld "cc" "$@" <<EOF && enable $func
1316 #include <complex.h>
1317 #include <math.h>
1318 float foo(complex float f, complex float g) { return $func($args); }
1319 int main(void){ return (int) foo; }
1320 EOF
1321 }
1322
1323 check_mathfunc(){
1324     log check_mathfunc "$@"
1325     func=$1
1326     narg=$2
1327     shift 2
1328     test $narg = 2 && args="f, g" || args="f"
1329     disable $func
1330     test_ld "cc" "$@" <<EOF && enable $func
1331 #include <math.h>
1332 float foo(float f, float g) { return $func($args); }
1333 int main(void){ return (int) foo; }
1334 EOF
1335 }
1336
1337 check_func_headers(){
1338     log check_func_headers "$@"
1339     headers=$1
1340     funcs=$2
1341     shift 2
1342     {
1343         for hdr in $headers; do
1344             print_include $hdr
1345         done
1346         echo "#include <stdint.h>"
1347         for func in $funcs; do
1348             echo "long check_$func(void) { return (long) $func; }"
1349         done
1350         echo "int main(void) { int ret = 0;"
1351         # LTO could optimize out the test functions without this
1352         for func in $funcs; do
1353             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1354         done
1355         echo "return ret; }"
1356     } | test_ld "cc" "$@" && enable $funcs && enable_sanitized $headers
1357 }
1358
1359 check_class_headers_cpp(){
1360     log check_class_headers_cpp "$@"
1361     headers=$1
1362     classes=$2
1363     shift 2
1364     {
1365         for hdr in $headers; do
1366             echo "#include <$hdr>"
1367         done
1368         echo "int main(void) { "
1369         i=1
1370         for class in $classes; do
1371             echo "$class obj$i;"
1372             i=$(expr $i + 1)
1373         done
1374         echo "return 0; }"
1375     } | test_ld "cxx" "$@" && enable $funcs && enable_sanitized $headers
1376 }
1377
1378 test_cpp_condition(){
1379     log test_cpp_condition "$@"
1380     header=$1
1381     condition=$2
1382     shift 2
1383     test_cpp "$@" <<EOF
1384 #include <$header>
1385 #if !($condition)
1386 #error "unsatisfied condition: $condition"
1387 #endif
1388 EOF
1389 }
1390
1391 check_cpp_condition(){
1392     log check_cpp_condition "$@"
1393     name=$1
1394     shift 1
1395     disable $name
1396     test_cpp_condition "$@" && enable $name
1397 }
1398
1399 test_cflags_cc(){
1400     log test_cflags_cc "$@"
1401     flags=$1
1402     header=$2
1403     condition=$3
1404     shift 3
1405     set -- $($cflags_filter "$flags")
1406     test_cc "$@" <<EOF
1407 #include <$header>
1408 #if !($condition)
1409 #error "unsatisfied condition: $condition"
1410 #endif
1411 EOF
1412 }
1413
1414 check_lib(){
1415     log check_lib "$@"
1416     name="$1"
1417     headers="$2"
1418     funcs="$3"
1419     shift 3
1420     disable $name
1421     check_func_headers "$headers" "$funcs" "$@" &&
1422         enable $name && eval ${name}_extralibs="\$@"
1423 }
1424
1425 check_lib_cpp(){
1426     log check_lib_cpp "$@"
1427     name="$1"
1428     headers="$2"
1429     classes="$3"
1430     shift 3
1431     disable $name
1432     check_class_headers_cpp "$headers" "$classes" "$@" &&
1433         enable $name && eval ${name}_extralibs="\$@"
1434 }
1435
1436 test_pkg_config(){
1437     log test_pkg_config "$@"
1438     name="$1"
1439     pkg_version="$2"
1440     pkg="${2%% *}"
1441     headers="$3"
1442     funcs="$4"
1443     shift 4
1444     disable $name
1445     test_cmd $pkg_config --exists --print-errors $pkg_version || return
1446     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1447     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1448     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1449         enable $name &&
1450         set_sanitized "${name}_cflags"    $pkg_cflags &&
1451         set_sanitized "${name}_extralibs" $pkg_libs
1452 }
1453
1454 check_pkg_config(){
1455     log check_pkg_config "$@"
1456     name="$1"
1457     test_pkg_config "$@" &&
1458         eval add_cflags \$${name}_cflags
1459 }
1460
1461 test_exec(){
1462     test_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1463 }
1464
1465 check_exec_crash(){
1466     log check_exec_crash "$@"
1467     code=$(cat)
1468
1469     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1470     # are safe but may not be available everywhere.  Thus we use
1471     # raise(SIGTERM) instead.  The check is run in a subshell so we
1472     # can redirect the "Terminated" message from the shell.  SIGBUS
1473     # is not defined by standard C so it is used conditionally.
1474
1475     (test_exec "$@") >> $logfile 2>&1 <<EOF
1476 #include <signal.h>
1477 static void sighandler(int sig){
1478     raise(SIGTERM);
1479 }
1480 int foo(void){
1481     $code
1482 }
1483 int (*func_ptr)(void) = foo;
1484 int main(void){
1485     signal(SIGILL, sighandler);
1486     signal(SIGFPE, sighandler);
1487     signal(SIGSEGV, sighandler);
1488 #ifdef SIGBUS
1489     signal(SIGBUS, sighandler);
1490 #endif
1491     return func_ptr();
1492 }
1493 EOF
1494 }
1495
1496 check_type(){
1497     log check_type "$@"
1498     headers=$1
1499     type=$2
1500     shift 2
1501     disable_sanitized "$type"
1502     test_code cc "$headers" "$type v" "$@" && enable_sanitized "$type"
1503 }
1504
1505 check_struct(){
1506     log check_struct "$@"
1507     headers=$1
1508     struct=$2
1509     member=$3
1510     shift 3
1511     disable_sanitized "${struct}_${member}"
1512     test_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1513         enable_sanitized "${struct}_${member}"
1514 }
1515
1516 check_builtin(){
1517     log check_builtin "$@"
1518     name=$1
1519     headers=$2
1520     builtin=$3
1521     shift 3
1522     disable "$name"
1523     test_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1524 }
1525
1526 check_compile_assert(){
1527     log check_compile_assert "$@"
1528     name=$1
1529     headers=$2
1530     condition=$3
1531     shift 3
1532     disable "$name"
1533     test_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1534 }
1535
1536 check_cc(){
1537     log check_cc "$@"
1538     name=$1
1539     shift
1540     disable "$name"
1541     test_code cc "$@" && enable "$name"
1542 }
1543
1544 require(){
1545     log require "$@"
1546     name_version="$1"
1547     name="${1%% *}"
1548     shift
1549     check_lib $name "$@" || die "ERROR: $name_version not found"
1550 }
1551
1552 require_cc(){
1553     log require_cc "$@"
1554     name="$1"
1555     check_cc "$@" || die "ERROR: $name failed"
1556 }
1557
1558 require_cpp(){
1559     log require_cpp "$@"
1560     name_version="$1"
1561     name="${1%% *}"
1562     shift
1563     check_lib_cpp "$name" "$@" || die "ERROR: $name_version not found"
1564 }
1565
1566 require_headers(){
1567     log require_headers "$@"
1568     headers="$1"
1569     check_headers "$@" || die "ERROR: $headers not found"
1570 }
1571
1572 require_cpp_condition(){
1573     log require_cpp_condition "$@"
1574     condition="$3"
1575     check_cpp_condition "$@" || die "ERROR: $condition not satisfied"
1576 }
1577
1578 require_pkg_config(){
1579     log require_pkg_config "$@"
1580     pkg_version="$2"
1581     check_pkg_config "$@" || die "ERROR: $pkg_version not found using pkg-config$pkg_config_fail_message"
1582 }
1583
1584 test_host_cc(){
1585     log test_host_cc "$@"
1586     cat > $TMPC
1587     log_file $TMPC
1588     test_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1589 }
1590
1591 test_host_cpp(){
1592     log test_host_cpp "$@"
1593     cat > $TMPC
1594     log_file $TMPC
1595     test_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1596 }
1597
1598 check_host_cppflags(){
1599     log check_host_cppflags "$@"
1600     test_host_cpp "$@" <<EOF && append host_cppflags "$@"
1601 #include <stdlib.h>
1602 EOF
1603 }
1604
1605 check_host_cflags(){
1606     log check_host_cflags "$@"
1607     set -- $($host_cflags_filter "$@")
1608     test_host_cc "$@" <<EOF && append host_cflags "$@"
1609 int x;
1610 EOF
1611 }
1612
1613 test_host_cpp_condition(){
1614     log test_host_cpp_condition "$@"
1615     header=$1
1616     condition=$2
1617     shift 2
1618     test_host_cpp "$@" <<EOF
1619 #include <$header>
1620 #if !($condition)
1621 #error "unsatisfied condition: $condition"
1622 #endif
1623 EOF
1624 }
1625
1626 check_host_cpp_condition(){
1627     log check_host_cpp_condition "$@"
1628     name=$1
1629     shift 1
1630     disable $name
1631     test_host_cpp_condition "$@" && enable $name
1632 }
1633
1634 cp_if_changed(){
1635     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1636     mkdir -p "$(dirname $2)"
1637     cp -f "$1" "$2"
1638 }
1639
1640 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1641 # system-dependent things.
1642
1643 AVCODEC_COMPONENTS="
1644     bsfs
1645     decoders
1646     encoders
1647     hwaccels
1648     parsers
1649 "
1650
1651 AVDEVICE_COMPONENTS="
1652     indevs
1653     outdevs
1654 "
1655
1656 AVFILTER_COMPONENTS="
1657     filters
1658 "
1659
1660 AVFORMAT_COMPONENTS="
1661     demuxers
1662     muxers
1663     protocols
1664 "
1665
1666 COMPONENT_LIST="
1667     $AVCODEC_COMPONENTS
1668     $AVDEVICE_COMPONENTS
1669     $AVFILTER_COMPONENTS
1670     $AVFORMAT_COMPONENTS
1671 "
1672
1673 EXAMPLE_LIST="
1674     avio_list_dir_example
1675     avio_reading_example
1676     decode_audio_example
1677     decode_video_example
1678     demuxing_decoding_example
1679     encode_audio_example
1680     encode_video_example
1681     extract_mvs_example
1682     filter_audio_example
1683     filtering_audio_example
1684     filtering_video_example
1685     http_multiclient_example
1686     hw_decode_example
1687     metadata_example
1688     muxing_example
1689     qsvdec_example
1690     remuxing_example
1691     resampling_audio_example
1692     scaling_video_example
1693     transcode_aac_example
1694     transcoding_example
1695     vaapi_encode_example
1696     vaapi_transcode_example
1697 "
1698
1699 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1700     alsa
1701     appkit
1702     avfoundation
1703     bzlib
1704     coreimage
1705     iconv
1706     libxcb
1707     libxcb_shm
1708     libxcb_shape
1709     libxcb_xfixes
1710     lzma
1711     mediafoundation
1712     schannel
1713     sdl2
1714     securetransport
1715     sndio
1716     xlib
1717     zlib
1718 "
1719
1720 EXTERNAL_LIBRARY_GPL_LIST="
1721     avisynth
1722     frei0r
1723     libcdio
1724     libdavs2
1725     librubberband
1726     libvidstab
1727     libx264
1728     libx265
1729     libxavs
1730     libxavs2
1731     libxvid
1732 "
1733
1734 EXTERNAL_LIBRARY_NONFREE_LIST="
1735     decklink
1736     libfdk_aac
1737     openssl
1738     libtls
1739 "
1740
1741 EXTERNAL_LIBRARY_VERSION3_LIST="
1742     gmp
1743     libaribb24
1744     liblensfun
1745     libopencore_amrnb
1746     libopencore_amrwb
1747     libvo_amrwbenc
1748     mbedtls
1749     rkmpp
1750 "
1751
1752 EXTERNAL_LIBRARY_GPLV3_LIST="
1753     libsmbclient
1754 "
1755
1756 EXTERNAL_LIBRARY_LIST="
1757     $EXTERNAL_LIBRARY_GPL_LIST
1758     $EXTERNAL_LIBRARY_NONFREE_LIST
1759     $EXTERNAL_LIBRARY_VERSION3_LIST
1760     $EXTERNAL_LIBRARY_GPLV3_LIST
1761     chromaprint
1762     gcrypt
1763     gnutls
1764     jni
1765     ladspa
1766     libaom
1767     libass
1768     libbluray
1769     libbs2b
1770     libcaca
1771     libcelt
1772     libcodec2
1773     libdav1d
1774     libdc1394
1775     libdrm
1776     libflite
1777     libfontconfig
1778     libfreetype
1779     libfribidi
1780     libglslang
1781     libgme
1782     libgsm
1783     libiec61883
1784     libilbc
1785     libjack
1786     libklvanc
1787     libkvazaar
1788     libmodplug
1789     libmp3lame
1790     libmysofa
1791     libopencv
1792     libopenh264
1793     libopenjpeg
1794     libopenmpt
1795     libopenvino
1796     libopus
1797     libpulse
1798     librabbitmq
1799     librav1e
1800     librsvg
1801     librtmp
1802     libshine
1803     libsmbclient
1804     libsnappy
1805     libsoxr
1806     libspeex
1807     libsrt
1808     libssh
1809     libsvtav1
1810     libtensorflow
1811     libtesseract
1812     libtheora
1813     libtwolame
1814     libuavs3d
1815     libv4l2
1816     libvmaf
1817     libvorbis
1818     libvpx
1819     libwebp
1820     libxml2
1821     libzimg
1822     libzmq
1823     libzvbi
1824     lv2
1825     mediacodec
1826     openal
1827     opengl
1828     pocketsphinx
1829     vapoursynth
1830 "
1831
1832 HWACCEL_AUTODETECT_LIBRARY_LIST="
1833     amf
1834     audiotoolbox
1835     crystalhd
1836     cuda
1837     cuda_llvm
1838     cuvid
1839     d3d11va
1840     dxva2
1841     ffnvcodec
1842     nvdec
1843     nvenc
1844     vaapi
1845     vdpau
1846     videotoolbox
1847     v4l2_m2m
1848     xvmc
1849 "
1850
1851 # catchall list of things that require external libs to link
1852 EXTRALIBS_LIST="
1853     cpu_init
1854     cws2fws
1855 "
1856
1857 HWACCEL_LIBRARY_NONFREE_LIST="
1858     cuda_nvcc
1859     cuda_sdk
1860     libnpp
1861 "
1862
1863 HWACCEL_LIBRARY_LIST="
1864     $HWACCEL_LIBRARY_NONFREE_LIST
1865     libmfx
1866     mmal
1867     omx
1868     opencl
1869     vulkan
1870 "
1871
1872 DOCUMENT_LIST="
1873     doc
1874     htmlpages
1875     manpages
1876     podpages
1877     txtpages
1878 "
1879
1880 FEATURE_LIST="
1881     ftrapv
1882     gray
1883     hardcoded_tables
1884     omx_rpi
1885     runtime_cpudetect
1886     safe_bitstream_reader
1887     shared
1888     small
1889     static
1890     swscale_alpha
1891 "
1892
1893 # this list should be kept in linking order
1894 LIBRARY_LIST="
1895     avdevice
1896     avfilter
1897     swscale
1898     postproc
1899     avformat
1900     avcodec
1901     swresample
1902     avresample
1903     avutil
1904 "
1905
1906 LICENSE_LIST="
1907     gpl
1908     nonfree
1909     version3
1910 "
1911
1912 PROGRAM_LIST="
1913     ffplay
1914     ffprobe
1915     ffmpeg
1916 "
1917
1918 SUBSYSTEM_LIST="
1919     dct
1920     dwt
1921     error_resilience
1922     faan
1923     fast_unaligned
1924     fft
1925     lsp
1926     lzo
1927     mdct
1928     pixelutils
1929     network
1930     rdft
1931 "
1932
1933 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1934 CONFIG_LIST="
1935     $DOCUMENT_LIST
1936     $EXAMPLE_LIST
1937     $EXTERNAL_LIBRARY_LIST
1938     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1939     $HWACCEL_LIBRARY_LIST
1940     $HWACCEL_AUTODETECT_LIBRARY_LIST
1941     $FEATURE_LIST
1942     $LICENSE_LIST
1943     $LIBRARY_LIST
1944     $PROGRAM_LIST
1945     $SUBSYSTEM_LIST
1946     autodetect
1947     fontconfig
1948     large_tests
1949     linux_perf
1950     memory_poisoning
1951     neon_clobber_test
1952     ossfuzz
1953     pic
1954     thumb
1955     valgrind_backtrace
1956     xmm_clobber_test
1957     $COMPONENT_LIST
1958 "
1959
1960 THREADS_LIST="
1961     pthreads
1962     os2threads
1963     w32threads
1964 "
1965
1966 ATOMICS_LIST="
1967     atomics_gcc
1968     atomics_suncc
1969     atomics_win32
1970 "
1971
1972 AUTODETECT_LIBS="
1973     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1974     $HWACCEL_AUTODETECT_LIBRARY_LIST
1975     $THREADS_LIST
1976 "
1977
1978 ARCH_LIST="
1979     aarch64
1980     alpha
1981     arm
1982     avr32
1983     avr32_ap
1984     avr32_uc
1985     bfin
1986     ia64
1987     m68k
1988     mips
1989     mips64
1990     parisc
1991     ppc
1992     ppc64
1993     s390
1994     sh4
1995     sparc
1996     sparc64
1997     tilegx
1998     tilepro
1999     tomi
2000     x86
2001     x86_32
2002     x86_64
2003 "
2004
2005 ARCH_EXT_LIST_ARM="
2006     armv5te
2007     armv6
2008     armv6t2
2009     armv8
2010     neon
2011     vfp
2012     vfpv3
2013     setend
2014 "
2015
2016 ARCH_EXT_LIST_MIPS="
2017     mipsfpu
2018     mips32r2
2019     mips32r5
2020     mips64r2
2021     mips32r6
2022     mips64r6
2023     mipsdsp
2024     mipsdspr2
2025     msa
2026     msa2
2027 "
2028
2029 ARCH_EXT_LIST_LOONGSON="
2030     loongson2
2031     loongson3
2032     mmi
2033 "
2034
2035 ARCH_EXT_LIST_X86_SIMD="
2036     aesni
2037     amd3dnow
2038     amd3dnowext
2039     avx
2040     avx2
2041     avx512
2042     fma3
2043     fma4
2044     mmx
2045     mmxext
2046     sse
2047     sse2
2048     sse3
2049     sse4
2050     sse42
2051     ssse3
2052     xop
2053 "
2054
2055 ARCH_EXT_LIST_PPC="
2056     altivec
2057     dcbzl
2058     ldbrx
2059     power8
2060     ppc4xx
2061     vsx
2062 "
2063
2064 ARCH_EXT_LIST_X86="
2065     $ARCH_EXT_LIST_X86_SIMD
2066     cpunop
2067     i686
2068 "
2069
2070 ARCH_EXT_LIST="
2071     $ARCH_EXT_LIST_ARM
2072     $ARCH_EXT_LIST_PPC
2073     $ARCH_EXT_LIST_X86
2074     $ARCH_EXT_LIST_MIPS
2075     $ARCH_EXT_LIST_LOONGSON
2076 "
2077
2078 ARCH_FEATURES="
2079     aligned_stack
2080     fast_64bit
2081     fast_clz
2082     fast_cmov
2083     local_aligned
2084     simd_align_16
2085     simd_align_32
2086     simd_align_64
2087 "
2088
2089 BUILTIN_LIST="
2090     atomic_cas_ptr
2091     machine_rw_barrier
2092     MemoryBarrier
2093     mm_empty
2094     rdtsc
2095     sem_timedwait
2096     sync_val_compare_and_swap
2097 "
2098 HAVE_LIST_CMDLINE="
2099     inline_asm
2100     symver
2101     x86asm
2102 "
2103
2104 HAVE_LIST_PUB="
2105     bigendian
2106     fast_unaligned
2107 "
2108
2109 HEADERS_LIST="
2110     arpa_inet_h
2111     asm_types_h
2112     cdio_paranoia_h
2113     cdio_paranoia_paranoia_h
2114     cuda_h
2115     dispatch_dispatch_h
2116     dev_bktr_ioctl_bt848_h
2117     dev_bktr_ioctl_meteor_h
2118     dev_ic_bt8xx_h
2119     dev_video_bktr_ioctl_bt848_h
2120     dev_video_meteor_ioctl_meteor_h
2121     direct_h
2122     dirent_h
2123     dxgidebug_h
2124     dxva_h
2125     ES2_gl_h
2126     gsm_h
2127     io_h
2128     linux_perf_event_h
2129     machine_ioctl_bt848_h
2130     machine_ioctl_meteor_h
2131     malloc_h
2132     opencv2_core_core_c_h
2133     OpenGL_gl3_h
2134     poll_h
2135     sys_param_h
2136     sys_resource_h
2137     sys_select_h
2138     sys_soundcard_h
2139     sys_time_h
2140     sys_un_h
2141     sys_videoio_h
2142     termios_h
2143     udplite_h
2144     unistd_h
2145     valgrind_valgrind_h
2146     windows_h
2147     winsock2_h
2148 "
2149
2150 INTRINSICS_LIST="
2151     intrinsics_neon
2152 "
2153
2154 COMPLEX_FUNCS="
2155     cabs
2156     cexp
2157 "
2158
2159 MATH_FUNCS="
2160     atanf
2161     atan2f
2162     cbrt
2163     cbrtf
2164     copysign
2165     cosf
2166     erf
2167     exp2
2168     exp2f
2169     expf
2170     hypot
2171     isfinite
2172     isinf
2173     isnan
2174     ldexpf
2175     llrint
2176     llrintf
2177     log2
2178     log2f
2179     log10f
2180     lrint
2181     lrintf
2182     powf
2183     rint
2184     round
2185     roundf
2186     sinf
2187     trunc
2188     truncf
2189 "
2190
2191 SYSTEM_FEATURES="
2192     dos_paths
2193     libc_msvcrt
2194     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2195     section_data_rel_ro
2196     threads
2197     uwp
2198     winrt
2199 "
2200
2201 SYSTEM_FUNCS="
2202     access
2203     aligned_malloc
2204     arc4random
2205     clock_gettime
2206     closesocket
2207     CommandLineToArgvW
2208     fcntl
2209     getaddrinfo
2210     gethrtime
2211     getopt
2212     GetModuleHandle
2213     GetProcessAffinityMask
2214     GetProcessMemoryInfo
2215     GetProcessTimes
2216     getrusage
2217     GetStdHandle
2218     GetSystemTimeAsFileTime
2219     gettimeofday
2220     glob
2221     glXGetProcAddress
2222     gmtime_r
2223     inet_aton
2224     isatty
2225     kbhit
2226     localtime_r
2227     lstat
2228     lzo1x_999_compress
2229     mach_absolute_time
2230     MapViewOfFile
2231     memalign
2232     mkstemp
2233     mmap
2234     mprotect
2235     nanosleep
2236     PeekNamedPipe
2237     posix_memalign
2238     pthread_cancel
2239     sched_getaffinity
2240     SecItemImport
2241     SetConsoleTextAttribute
2242     SetConsoleCtrlHandler
2243     SetDllDirectory
2244     setmode
2245     setrlimit
2246     Sleep
2247     strerror_r
2248     sysconf
2249     sysctl
2250     usleep
2251     UTGetOSTypeFromString
2252     VirtualAlloc
2253     wglGetProcAddress
2254 "
2255
2256 SYSTEM_LIBRARIES="
2257     bcrypt
2258     vaapi_drm
2259     vaapi_x11
2260     vdpau_x11
2261 "
2262
2263 TOOLCHAIN_FEATURES="
2264     as_arch_directive
2265     as_dn_directive
2266     as_fpu_directive
2267     as_func
2268     as_object_arch
2269     asm_mod_q
2270     blocks_extension
2271     ebp_available
2272     ebx_available
2273     gnu_as
2274     gnu_windres
2275     ibm_asm
2276     inline_asm_direct_symbol_refs
2277     inline_asm_labels
2278     inline_asm_nonlocal_labels
2279     pragma_deprecated
2280     rsync_contimeout
2281     symver_asm_label
2282     symver_gnu_asm
2283     vfp_args
2284     xform_asm
2285     xmm_clobbers
2286 "
2287
2288 TYPES_LIST="
2289     kCMVideoCodecType_HEVC
2290     kCVPixelFormatType_420YpCbCr10BiPlanarVideoRange
2291     kCVImageBufferTransferFunction_SMPTE_ST_2084_PQ
2292     kCVImageBufferTransferFunction_ITU_R_2100_HLG
2293     kCVImageBufferTransferFunction_Linear
2294     socklen_t
2295     struct_addrinfo
2296     struct_group_source_req
2297     struct_ip_mreq_source
2298     struct_ipv6_mreq
2299     struct_msghdr_msg_flags
2300     struct_pollfd
2301     struct_rusage_ru_maxrss
2302     struct_sctp_event_subscribe
2303     struct_sockaddr_in6
2304     struct_sockaddr_sa_len
2305     struct_sockaddr_storage
2306     struct_stat_st_mtim_tv_nsec
2307     struct_v4l2_frmivalenum_discrete
2308 "
2309
2310 HAVE_LIST="
2311     $ARCH_EXT_LIST
2312     $(add_suffix _external $ARCH_EXT_LIST)
2313     $(add_suffix _inline   $ARCH_EXT_LIST)
2314     $ARCH_FEATURES
2315     $BUILTIN_LIST
2316     $COMPLEX_FUNCS
2317     $HAVE_LIST_CMDLINE
2318     $HAVE_LIST_PUB
2319     $HEADERS_LIST
2320     $INTRINSICS_LIST
2321     $MATH_FUNCS
2322     $SYSTEM_FEATURES
2323     $SYSTEM_FUNCS
2324     $SYSTEM_LIBRARIES
2325     $THREADS_LIST
2326     $TOOLCHAIN_FEATURES
2327     $TYPES_LIST
2328     libdrm_getfb2
2329     makeinfo
2330     makeinfo_html
2331     opencl_d3d11
2332     opencl_drm_arm
2333     opencl_drm_beignet
2334     opencl_dxva2
2335     opencl_vaapi_beignet
2336     opencl_vaapi_intel_media
2337     perl
2338     pod2man
2339     texi2html
2340 "
2341
2342 # options emitted with CONFIG_ prefix but not available on the command line
2343 CONFIG_EXTRA="
2344     aandcttables
2345     ac3dsp
2346     adts_header
2347     atsc_a53
2348     audio_frame_queue
2349     audiodsp
2350     blockdsp
2351     bswapdsp
2352     cabac
2353     cbs
2354     cbs_av1
2355     cbs_h264
2356     cbs_h265
2357     cbs_jpeg
2358     cbs_mpeg2
2359     cbs_vp9
2360     dirac_parse
2361     dnn
2362     dvprofile
2363     exif
2364     faandct
2365     faanidct
2366     fdctdsp
2367     flacdsp
2368     fmtconvert
2369     frame_thread_encoder
2370     g722dsp
2371     golomb
2372     gplv3
2373     h263dsp
2374     h264chroma
2375     h264dsp
2376     h264parse
2377     h264pred
2378     h264qpel
2379     hevcparse
2380     hpeldsp
2381     huffman
2382     huffyuvdsp
2383     huffyuvencdsp
2384     idctdsp
2385     iirfilter
2386     mdct15
2387     intrax8
2388     iso_media
2389     ividsp
2390     jpegtables
2391     lgplv3
2392     libx262
2393     llauddsp
2394     llviddsp
2395     llvidencdsp
2396     lpc
2397     lzf
2398     me_cmp
2399     mpeg_er
2400     mpegaudio
2401     mpegaudiodsp
2402     mpegaudioheader
2403     mpegvideo
2404     mpegvideoenc
2405     mss34dsp
2406     pixblockdsp
2407     qpeldsp
2408     qsv
2409     qsvdec
2410     qsvenc
2411     qsvvpp
2412     rangecoder
2413     riffdec
2414     riffenc
2415     rtpdec
2416     rtpenc_chain
2417     rv34dsp
2418     scene_sad
2419     sinewin
2420     snappy
2421     srtp
2422     startcode
2423     texturedsp
2424     texturedspenc
2425     tpeldsp
2426     vaapi_1
2427     vaapi_encode
2428     vc1dsp
2429     videodsp
2430     vp3dsp
2431     vp56dsp
2432     vp8dsp
2433     wma_freqs
2434     wmv2dsp
2435 "
2436
2437 CMDLINE_SELECT="
2438     $ARCH_EXT_LIST
2439     $CONFIG_LIST
2440     $HAVE_LIST_CMDLINE
2441     $THREADS_LIST
2442     asm
2443     cross_compile
2444     debug
2445     extra_warnings
2446     logging
2447     lto
2448     optimizations
2449     rpath
2450     stripping
2451 "
2452
2453 PATHS_LIST="
2454     bindir
2455     datadir
2456     docdir
2457     incdir
2458     libdir
2459     mandir
2460     pkgconfigdir
2461     prefix
2462     shlibdir
2463     install_name_dir
2464 "
2465
2466 CMDLINE_SET="
2467     $PATHS_LIST
2468     ar
2469     arch
2470     as
2471     assert_level
2472     build_suffix
2473     cc
2474     objcc
2475     cpu
2476     cross_prefix
2477     custom_allocator
2478     cxx
2479     dep_cc
2480     doxygen
2481     env
2482     extra_version
2483     gas
2484     host_cc
2485     host_cflags
2486     host_extralibs
2487     host_ld
2488     host_ldflags
2489     host_os
2490     ignore_tests
2491     install
2492     ld
2493     ln_s
2494     logfile
2495     malloc_prefix
2496     nm
2497     optflags
2498     nvcc
2499     nvccflags
2500     pkg_config
2501     pkg_config_flags
2502     progs_suffix
2503     random_seed
2504     ranlib
2505     samples
2506     strip
2507     sws_max_filter_size
2508     sysinclude
2509     sysroot
2510     target_exec
2511     target_os
2512     target_path
2513     target_samples
2514     tempprefix
2515     toolchain
2516     valgrind
2517     windres
2518     x86asmexe
2519 "
2520
2521 CMDLINE_APPEND="
2522     extra_cflags
2523     extra_cxxflags
2524     extra_objcflags
2525     host_cppflags
2526 "
2527
2528 # code dependency declarations
2529
2530 # architecture extensions
2531
2532 armv5te_deps="arm"
2533 armv6_deps="arm"
2534 armv6t2_deps="arm"
2535 armv8_deps="aarch64"
2536 neon_deps_any="aarch64 arm"
2537 intrinsics_neon_deps="neon"
2538 vfp_deps_any="aarch64 arm"
2539 vfpv3_deps="vfp"
2540 setend_deps="arm"
2541
2542 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2543
2544 altivec_deps="ppc"
2545 dcbzl_deps="ppc"
2546 ldbrx_deps="ppc"
2547 ppc4xx_deps="ppc"
2548 vsx_deps="altivec"
2549 power8_deps="vsx"
2550
2551 loongson2_deps="mips"
2552 loongson3_deps="mips"
2553 mips32r2_deps="mips"
2554 mips32r5_deps="mips"
2555 mips32r6_deps="mips"
2556 mips64r2_deps="mips"
2557 mips64r6_deps="mips"
2558 mipsfpu_deps="mips"
2559 mipsdsp_deps="mips"
2560 mipsdspr2_deps="mips"
2561 mmi_deps_any="loongson2 loongson3"
2562 msa_deps="mipsfpu"
2563 msa2_deps="msa"
2564
2565 cpunop_deps="i686"
2566 x86_64_select="i686"
2567 x86_64_suggest="fast_cmov"
2568
2569 amd3dnow_deps="mmx"
2570 amd3dnowext_deps="amd3dnow"
2571 i686_deps="x86"
2572 mmx_deps="x86"
2573 mmxext_deps="mmx"
2574 sse_deps="mmxext"
2575 sse2_deps="sse"
2576 sse3_deps="sse2"
2577 ssse3_deps="sse3"
2578 sse4_deps="ssse3"
2579 sse42_deps="sse4"
2580 aesni_deps="sse42"
2581 avx_deps="sse42"
2582 xop_deps="avx"
2583 fma3_deps="avx"
2584 fma4_deps="avx"
2585 avx2_deps="avx"
2586 avx512_deps="avx2"
2587
2588 mmx_external_deps="x86asm"
2589 mmx_inline_deps="inline_asm x86"
2590 mmx_suggest="mmx_external mmx_inline"
2591
2592 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2593     eval dep=\$${ext}_deps
2594     eval ${ext}_external_deps='"${dep}_external"'
2595     eval ${ext}_inline_deps='"${dep}_inline"'
2596     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2597 done
2598
2599 aligned_stack_if_any="aarch64 ppc x86"
2600 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2601 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2602 fast_unaligned_if_any="aarch64 ppc x86"
2603 simd_align_16_if_any="altivec neon sse"
2604 simd_align_32_if_any="avx"
2605 simd_align_64_if_any="avx512"
2606
2607 # system capabilities
2608 linux_perf_deps="linux_perf_event_h"
2609 symver_if_any="symver_asm_label symver_gnu_asm"
2610 valgrind_backtrace_conflict="optimizations"
2611 valgrind_backtrace_deps="valgrind_valgrind_h"
2612
2613 # threading support
2614 atomics_gcc_if="sync_val_compare_and_swap"
2615 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2616 atomics_win32_if="MemoryBarrier"
2617 atomics_native_if_any="$ATOMICS_LIST"
2618 w32threads_deps="atomics_native"
2619 threads_if_any="$THREADS_LIST"
2620
2621 # subsystems
2622 cbs_av1_select="cbs"
2623 cbs_h264_select="cbs"
2624 cbs_h265_select="cbs"
2625 cbs_jpeg_select="cbs"
2626 cbs_mpeg2_select="cbs"
2627 cbs_vp9_select="cbs"
2628 dct_select="rdft"
2629 dirac_parse_select="golomb"
2630 dnn_suggest="libtensorflow libopenvino"
2631 dnn_deps="swscale"
2632 error_resilience_select="me_cmp"
2633 faandct_deps="faan"
2634 faandct_select="fdctdsp"
2635 faanidct_deps="faan"
2636 faanidct_select="idctdsp"
2637 h264dsp_select="startcode"
2638 hevcparse_select="atsc_a53 golomb"
2639 frame_thread_encoder_deps="encoders threads"
2640 intrax8_select="blockdsp idctdsp"
2641 mdct_select="fft"
2642 mdct15_select="fft"
2643 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2644 mpeg_er_select="error_resilience"
2645 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2646 mpegaudiodsp_select="dct"
2647 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2648 mpegvideoenc_select="aandcttables me_cmp mpegvideo pixblockdsp qpeldsp"
2649 vc1dsp_select="h264chroma qpeldsp startcode"
2650 rdft_select="fft"
2651
2652 # decoders / encoders
2653 aac_decoder_select="adts_header mdct15 mdct sinewin"
2654 aac_fixed_decoder_select="adts_header mdct sinewin"
2655 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2656 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2657 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2658 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2659 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2660 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2661 acelp_kelvin_decoder_select="audiodsp"
2662 adpcm_g722_decoder_select="g722dsp"
2663 adpcm_g722_encoder_select="g722dsp"
2664 aic_decoder_select="golomb idctdsp"
2665 alac_encoder_select="lpc"
2666 als_decoder_select="bswapdsp"
2667 amrnb_decoder_select="lsp"
2668 amrwb_decoder_select="lsp"
2669 amv_decoder_select="sp5x_decoder exif"
2670 amv_encoder_select="jpegtables mpegvideoenc"
2671 ape_decoder_select="bswapdsp llauddsp"
2672 apng_decoder_deps="zlib"
2673 apng_encoder_deps="zlib"
2674 apng_encoder_select="llvidencdsp"
2675 aptx_decoder_select="audio_frame_queue"
2676 aptx_encoder_select="audio_frame_queue"
2677 aptx_hd_decoder_select="audio_frame_queue"
2678 aptx_hd_encoder_select="audio_frame_queue"
2679 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2680 asv1_encoder_select="aandcttables bswapdsp fdctdsp pixblockdsp"
2681 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2682 asv2_encoder_select="aandcttables bswapdsp fdctdsp pixblockdsp"
2683 atrac1_decoder_select="mdct sinewin"
2684 atrac3_decoder_select="mdct"
2685 atrac3al_decoder_select="mdct"
2686 atrac3p_decoder_select="mdct sinewin"
2687 atrac3pal_decoder_select="mdct sinewin"
2688 atrac9_decoder_select="mdct"
2689 av1_decoder_select="cbs_av1"
2690 avrn_decoder_select="exif jpegtables"
2691 bink_decoder_select="blockdsp hpeldsp"
2692 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2693 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2694 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2695 clearvideo_decoder_select="idctdsp"
2696 cllc_decoder_select="bswapdsp"
2697 comfortnoise_encoder_select="lpc"
2698 cook_decoder_select="audiodsp mdct sinewin"
2699 cscd_decoder_select="lzo"
2700 cscd_decoder_suggest="zlib"
2701 dca_decoder_select="mdct"
2702 dca_encoder_select="mdct"
2703 dds_decoder_select="texturedsp"
2704 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2705 dnxhd_decoder_select="blockdsp idctdsp"
2706 dnxhd_encoder_select="blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2707 dolby_e_decoder_select="mdct"
2708 dvvideo_decoder_select="dvprofile idctdsp"
2709 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2710 dxa_decoder_deps="zlib"
2711 dxv_decoder_select="lzf texturedsp"
2712 eac3_decoder_select="ac3_decoder"
2713 eac3_encoder_select="ac3_encoder"
2714 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2715 eatgq_decoder_select="aandcttables"
2716 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2717 exr_decoder_deps="zlib"
2718 ffv1_decoder_select="rangecoder"
2719 ffv1_encoder_select="rangecoder"
2720 ffvhuff_decoder_select="huffyuv_decoder"
2721 ffvhuff_encoder_select="huffyuv_encoder"
2722 fic_decoder_select="golomb"
2723 flac_decoder_select="flacdsp"
2724 flac_encoder_select="bswapdsp flacdsp lpc"
2725 flashsv2_decoder_deps="zlib"
2726 flashsv2_encoder_deps="zlib"
2727 flashsv_decoder_deps="zlib"
2728 flashsv_encoder_deps="zlib"
2729 flv_decoder_select="h263_decoder"
2730 flv_encoder_select="h263_encoder"
2731 fourxm_decoder_select="blockdsp bswapdsp"
2732 fraps_decoder_select="bswapdsp huffman"
2733 g2m_decoder_deps="zlib"
2734 g2m_decoder_select="blockdsp idctdsp jpegtables"
2735 g729_decoder_select="audiodsp"
2736 h261_decoder_select="mpegvideo"
2737 h261_encoder_select="mpegvideoenc"
2738 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2739 h263_encoder_select="h263dsp mpegvideoenc"
2740 h263i_decoder_select="h263_decoder"
2741 h263p_decoder_select="h263_decoder"
2742 h263p_encoder_select="h263_encoder"
2743 h264_decoder_select="atsc_a53 cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2744 h264_decoder_suggest="error_resilience"
2745 hap_decoder_select="snappy texturedsp"
2746 hap_encoder_deps="libsnappy"
2747 hap_encoder_select="texturedspenc"
2748 hevc_decoder_select="atsc_a53 bswapdsp cabac golomb hevcparse videodsp"
2749 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2750 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2751 hymt_decoder_select="huffyuv_decoder"
2752 iac_decoder_select="imc_decoder"
2753 imc_decoder_select="bswapdsp fft mdct sinewin"
2754 imm4_decoder_select="bswapdsp"
2755 imm5_decoder_select="h264_decoder hevc_decoder"
2756 indeo3_decoder_select="hpeldsp"
2757 indeo4_decoder_select="ividsp"
2758 indeo5_decoder_select="ividsp"
2759 interplay_video_decoder_select="hpeldsp"
2760 jpegls_decoder_select="mjpeg_decoder"
2761 jv_decoder_select="blockdsp"
2762 lagarith_decoder_select="llviddsp"
2763 ljpeg_encoder_select="idctdsp jpegtables mpegvideoenc"
2764 lscr_decoder_deps="zlib"
2765 magicyuv_decoder_select="llviddsp"
2766 magicyuv_encoder_select="llvidencdsp"
2767 mdec_decoder_select="blockdsp bswapdsp idctdsp mpegvideo"
2768 metasound_decoder_select="lsp mdct sinewin"
2769 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2770 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2771 mjpeg_encoder_select="jpegtables mpegvideoenc"
2772 mjpegb_decoder_select="mjpeg_decoder"
2773 mlp_decoder_select="mlp_parser"
2774 mlp_encoder_select="lpc audio_frame_queue"
2775 mobiclip_decoder_select="bswapdsp golomb"
2776 motionpixels_decoder_select="bswapdsp"
2777 mp1_decoder_select="mpegaudio"
2778 mp1float_decoder_select="mpegaudio"
2779 mp2_decoder_select="mpegaudio"
2780 mp2float_decoder_select="mpegaudio"
2781 mp3_decoder_select="mpegaudio"
2782 mp3adu_decoder_select="mpegaudio"
2783 mp3adufloat_decoder_select="mpegaudio"
2784 mp3float_decoder_select="mpegaudio"
2785 mp3on4_decoder_select="mpegaudio"
2786 mp3on4float_decoder_select="mpegaudio"
2787 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2788 mpc8_decoder_select="mpegaudiodsp"
2789 mpegvideo_decoder_select="mpegvideo"
2790 mpeg1video_decoder_select="mpegvideo"
2791 mpeg1video_encoder_select="mpegvideoenc h263dsp"
2792 mpeg2video_decoder_select="mpegvideo"
2793 mpeg2video_encoder_select="mpegvideoenc h263dsp"
2794 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2795 mpeg4_encoder_select="h263_encoder"
2796 msa1_decoder_select="mss34dsp"
2797 mscc_decoder_deps="zlib"
2798 msmpeg4v1_decoder_select="h263_decoder"
2799 msmpeg4v2_decoder_select="h263_decoder"
2800 msmpeg4v2_encoder_select="h263_encoder"
2801 msmpeg4v3_decoder_select="h263_decoder"
2802 msmpeg4v3_encoder_select="h263_encoder"
2803 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2804 mts2_decoder_select="jpegtables mss34dsp"
2805 mv30_decoder_select="aandcttables blockdsp"
2806 mvha_decoder_deps="zlib"
2807 mvha_decoder_select="llviddsp"
2808 mwsc_decoder_deps="zlib"
2809 mxpeg_decoder_select="mjpeg_decoder"
2810 nellymoser_decoder_select="mdct sinewin"
2811 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2812 notchlc_decoder_select="lzf"
2813 nuv_decoder_select="idctdsp lzo"
2814 on2avc_decoder_select="mdct"
2815 opus_decoder_deps="swresample"
2816 opus_decoder_select="mdct15"
2817 opus_encoder_select="audio_frame_queue mdct15"
2818 png_decoder_deps="zlib"
2819 png_encoder_deps="zlib"
2820 png_encoder_select="llvidencdsp"
2821 prores_decoder_select="blockdsp idctdsp"
2822 prores_encoder_select="fdctdsp"
2823 qcelp_decoder_select="lsp"
2824 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2825 ra_144_decoder_select="audiodsp"
2826 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2827 ralf_decoder_select="golomb"
2828 rasc_decoder_deps="zlib"
2829 rawvideo_decoder_select="bswapdsp"
2830 rscc_decoder_deps="zlib"
2831 rtjpeg_decoder_select="me_cmp"
2832 rv10_decoder_select="h263_decoder"
2833 rv10_encoder_select="h263_encoder"
2834 rv20_decoder_select="h263_decoder"
2835 rv20_encoder_select="h263_encoder"
2836 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2837 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2838 screenpresso_decoder_deps="zlib"
2839 shorten_decoder_select="bswapdsp"
2840 sipr_decoder_select="lsp"
2841 smvjpeg_decoder_select="mjpeg_decoder"
2842 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2843 snow_encoder_select="dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2844 sonic_decoder_select="golomb rangecoder"
2845 sonic_encoder_select="golomb rangecoder"
2846 sonic_ls_encoder_select="golomb rangecoder"
2847 sp5x_decoder_select="mjpeg_decoder"
2848 speedhq_decoder_select="mpegvideo"
2849 srgc_decoder_deps="zlib"
2850 svq1_decoder_select="hpeldsp"
2851 svq1_encoder_select="hpeldsp me_cmp mpegvideoenc"
2852 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2853 svq3_decoder_suggest="zlib"
2854 tak_decoder_select="audiodsp"
2855 tdsc_decoder_deps="zlib"
2856 tdsc_decoder_select="mjpeg_decoder"
2857 theora_decoder_select="vp3_decoder"
2858 thp_decoder_select="mjpeg_decoder"
2859 tiff_decoder_select="mjpeg_decoder"
2860 tiff_decoder_suggest="zlib lzma"
2861 tiff_encoder_suggest="zlib"
2862 truehd_decoder_select="mlp_parser"
2863 truehd_encoder_select="lpc audio_frame_queue"
2864 truemotion2_decoder_select="bswapdsp"
2865 truespeech_decoder_select="bswapdsp"
2866 tscc_decoder_deps="zlib"
2867 twinvq_decoder_select="mdct lsp sinewin"
2868 txd_decoder_select="texturedsp"
2869 utvideo_decoder_select="bswapdsp llviddsp"
2870 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2871 vble_decoder_select="llviddsp"
2872 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2873 vc1image_decoder_select="vc1_decoder"
2874 vorbis_decoder_select="mdct"
2875 vorbis_encoder_select="audio_frame_queue mdct"
2876 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2877 vp4_decoder_select="vp3_decoder"
2878 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2879 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2880 vp6a_decoder_select="vp6_decoder"
2881 vp6f_decoder_select="vp6_decoder"
2882 vp7_decoder_select="h264pred videodsp vp8dsp"
2883 vp8_decoder_select="h264pred videodsp vp8dsp"
2884 vp9_decoder_select="videodsp vp9_parser vp9_superframe_split_bsf"
2885 wcmv_decoder_deps="zlib"
2886 webp_decoder_select="vp8_decoder exif"
2887 wmalossless_decoder_select="llauddsp"
2888 wmapro_decoder_select="mdct sinewin wma_freqs"
2889 wmav1_decoder_select="mdct sinewin wma_freqs"
2890 wmav1_encoder_select="mdct sinewin wma_freqs"
2891 wmav2_decoder_select="mdct sinewin wma_freqs"
2892 wmav2_encoder_select="mdct sinewin wma_freqs"
2893 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2894 wmv1_decoder_select="h263_decoder"
2895 wmv1_encoder_select="h263_encoder"
2896 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2897 wmv2_encoder_select="h263_encoder wmv2dsp"
2898 wmv3_decoder_select="vc1_decoder"
2899 wmv3image_decoder_select="wmv3_decoder"
2900 xma1_decoder_select="wmapro_decoder"
2901 xma2_decoder_select="wmapro_decoder"
2902 ylc_decoder_select="bswapdsp"
2903 zerocodec_decoder_deps="zlib"
2904 zlib_decoder_deps="zlib"
2905 zlib_encoder_deps="zlib"
2906 zmbv_decoder_deps="zlib"
2907 zmbv_encoder_deps="zlib"
2908
2909 # hardware accelerators
2910 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2911 cuda_deps="ffnvcodec"
2912 cuvid_deps="ffnvcodec"
2913 d3d11va_deps="dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2914 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32 user32"
2915 ffnvcodec_deps_any="libdl LoadLibrary"
2916 nvdec_deps="ffnvcodec"
2917 vaapi_x11_deps="xlib"
2918 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2919 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2920 xvmc_deps="X11_extensions_XvMClib_h"
2921
2922 av1_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_AV1"
2923 av1_d3d11va_hwaccel_select="av1_decoder"
2924 av1_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_AV1"
2925 av1_d3d11va2_hwaccel_select="av1_decoder"
2926 av1_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_AV1"
2927 av1_dxva2_hwaccel_select="av1_decoder"
2928 av1_nvdec_hwaccel_deps="nvdec CUVIDAV1PICPARAMS"
2929 av1_nvdec_hwaccel_select="av1_decoder"
2930 av1_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferAV1_bit_depth_idx"
2931 av1_vaapi_hwaccel_select="av1_decoder"
2932 h263_vaapi_hwaccel_deps="vaapi"
2933 h263_vaapi_hwaccel_select="h263_decoder"
2934 h263_videotoolbox_hwaccel_deps="videotoolbox"
2935 h263_videotoolbox_hwaccel_select="h263_decoder"
2936 h264_d3d11va_hwaccel_deps="d3d11va"
2937 h264_d3d11va_hwaccel_select="h264_decoder"
2938 h264_d3d11va2_hwaccel_deps="d3d11va"
2939 h264_d3d11va2_hwaccel_select="h264_decoder"
2940 h264_dxva2_hwaccel_deps="dxva2"
2941 h264_dxva2_hwaccel_select="h264_decoder"
2942 h264_nvdec_hwaccel_deps="nvdec"
2943 h264_nvdec_hwaccel_select="h264_decoder"
2944 h264_vaapi_hwaccel_deps="vaapi"
2945 h264_vaapi_hwaccel_select="h264_decoder"
2946 h264_vdpau_hwaccel_deps="vdpau"
2947 h264_vdpau_hwaccel_select="h264_decoder"
2948 h264_videotoolbox_hwaccel_deps="videotoolbox"
2949 h264_videotoolbox_hwaccel_select="h264_decoder"
2950 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2951 hevc_d3d11va_hwaccel_select="hevc_decoder"
2952 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2953 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2954 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2955 hevc_dxva2_hwaccel_select="hevc_decoder"
2956 hevc_nvdec_hwaccel_deps="nvdec"
2957 hevc_nvdec_hwaccel_select="hevc_decoder"
2958 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2959 hevc_vaapi_hwaccel_select="hevc_decoder"
2960 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2961 hevc_vdpau_hwaccel_select="hevc_decoder"
2962 hevc_videotoolbox_hwaccel_deps="videotoolbox"
2963 hevc_videotoolbox_hwaccel_select="hevc_decoder"
2964 mjpeg_nvdec_hwaccel_deps="nvdec"
2965 mjpeg_nvdec_hwaccel_select="mjpeg_decoder"
2966 mjpeg_vaapi_hwaccel_deps="vaapi"
2967 mjpeg_vaapi_hwaccel_select="mjpeg_decoder"
2968 mpeg_xvmc_hwaccel_deps="xvmc"
2969 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2970 mpeg1_nvdec_hwaccel_deps="nvdec"
2971 mpeg1_nvdec_hwaccel_select="mpeg1video_decoder"
2972 mpeg1_vdpau_hwaccel_deps="vdpau"
2973 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2974 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2975 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2976 mpeg1_xvmc_hwaccel_deps="xvmc"
2977 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2978 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2979 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2980 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2981 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2982 mpeg2_dxva2_hwaccel_deps="dxva2"
2983 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2984 mpeg2_nvdec_hwaccel_deps="nvdec"
2985 mpeg2_nvdec_hwaccel_select="mpeg2video_decoder"
2986 mpeg2_vaapi_hwaccel_deps="vaapi"
2987 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2988 mpeg2_vdpau_hwaccel_deps="vdpau"
2989 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2990 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2991 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2992 mpeg2_xvmc_hwaccel_deps="xvmc"
2993 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2994 mpeg4_nvdec_hwaccel_deps="nvdec"
2995 mpeg4_nvdec_hwaccel_select="mpeg4_decoder"
2996 mpeg4_vaapi_hwaccel_deps="vaapi"
2997 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2998 mpeg4_vdpau_hwaccel_deps="vdpau"
2999 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
3000 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
3001 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
3002 vc1_d3d11va_hwaccel_deps="d3d11va"
3003 vc1_d3d11va_hwaccel_select="vc1_decoder"
3004 vc1_d3d11va2_hwaccel_deps="d3d11va"
3005 vc1_d3d11va2_hwaccel_select="vc1_decoder"
3006 vc1_dxva2_hwaccel_deps="dxva2"
3007 vc1_dxva2_hwaccel_select="vc1_decoder"
3008 vc1_nvdec_hwaccel_deps="nvdec"
3009 vc1_nvdec_hwaccel_select="vc1_decoder"
3010 vc1_vaapi_hwaccel_deps="vaapi"
3011 vc1_vaapi_hwaccel_select="vc1_decoder"
3012 vc1_vdpau_hwaccel_deps="vdpau"
3013 vc1_vdpau_hwaccel_select="vc1_decoder"
3014 vp8_nvdec_hwaccel_deps="nvdec"
3015 vp8_nvdec_hwaccel_select="vp8_decoder"
3016 vp8_vaapi_hwaccel_deps="vaapi"
3017 vp8_vaapi_hwaccel_select="vp8_decoder"
3018 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
3019 vp9_d3d11va_hwaccel_select="vp9_decoder"
3020 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
3021 vp9_d3d11va2_hwaccel_select="vp9_decoder"
3022 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
3023 vp9_dxva2_hwaccel_select="vp9_decoder"
3024 vp9_nvdec_hwaccel_deps="nvdec"
3025 vp9_nvdec_hwaccel_select="vp9_decoder"
3026 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
3027 vp9_vaapi_hwaccel_select="vp9_decoder"
3028 vp9_vdpau_hwaccel_deps="vdpau VdpPictureInfoVP9"
3029 vp9_vdpau_hwaccel_select="vp9_decoder"
3030 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
3031 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
3032 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
3033 wmv3_nvdec_hwaccel_select="vc1_nvdec_hwaccel"
3034 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
3035 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
3036
3037 # hardware-accelerated codecs
3038 mediafoundation_deps="mftransform_h MFCreateAlignedMemoryBuffer"
3039 mediafoundation_extralibs="-lmfplat -lmfuuid -lole32 -lstrmiids"
3040 omx_deps="libdl pthreads"
3041 omx_rpi_select="omx"
3042 qsv_deps="libmfx"
3043 qsvdec_select="qsv"
3044 qsvenc_select="qsv"
3045 qsvvpp_select="qsv"
3046 vaapi_encode_deps="vaapi"
3047 v4l2_m2m_deps="linux_videodev2_h sem_timedwait"
3048
3049 hwupload_cuda_filter_deps="ffnvcodec"
3050 scale_npp_filter_deps="ffnvcodec libnpp"
3051 scale_cuda_filter_deps="ffnvcodec"
3052 scale_cuda_filter_deps_any="cuda_nvcc cuda_llvm"
3053 thumbnail_cuda_filter_deps="ffnvcodec"
3054 thumbnail_cuda_filter_deps_any="cuda_nvcc cuda_llvm"
3055 transpose_npp_filter_deps="ffnvcodec libnpp"
3056 overlay_cuda_filter_deps="ffnvcodec"
3057 overlay_cuda_filter_deps_any="cuda_nvcc cuda_llvm"
3058
3059 amf_deps_any="libdl LoadLibrary"
3060 nvenc_deps="ffnvcodec"
3061 nvenc_deps_any="libdl LoadLibrary"
3062 nvenc_encoder_deps="nvenc"
3063
3064 aac_mf_encoder_deps="mediafoundation"
3065 ac3_mf_encoder_deps="mediafoundation"
3066 av1_cuvid_decoder_deps="cuvid CUVIDAV1PICPARAMS"
3067 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
3068 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
3069 h264_amf_encoder_deps="amf"
3070 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
3071 h264_cuvid_decoder_deps="cuvid"
3072 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
3073 h264_mediacodec_decoder_deps="mediacodec"
3074 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
3075 h264_mf_encoder_deps="mediafoundation"
3076 h264_mmal_decoder_deps="mmal"
3077 h264_nvenc_encoder_deps="nvenc"
3078 h264_nvenc_encoder_select="atsc_a53"
3079 h264_omx_encoder_deps="omx"
3080 h264_qsv_decoder_select="h264_mp4toannexb_bsf qsvdec"
3081 h264_qsv_encoder_select="atsc_a53 qsvenc"
3082 h264_rkmpp_decoder_deps="rkmpp"
3083 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
3084 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
3085 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
3086 h264_v4l2m2m_decoder_select="h264_mp4toannexb_bsf"
3087 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
3088 hevc_amf_encoder_deps="amf"
3089 hevc_cuvid_decoder_deps="cuvid"
3090 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
3091 hevc_mediacodec_decoder_deps="mediacodec"
3092 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
3093 hevc_mf_encoder_deps="mediafoundation"
3094 hevc_nvenc_encoder_deps="nvenc"
3095 hevc_nvenc_encoder_select="atsc_a53"
3096 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf qsvdec"
3097 hevc_qsv_encoder_select="hevcparse qsvenc"
3098 hevc_rkmpp_decoder_deps="rkmpp"
3099 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
3100 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
3101 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
3102 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
3103 hevc_v4l2m2m_decoder_select="hevc_mp4toannexb_bsf"
3104 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
3105 mjpeg_cuvid_decoder_deps="cuvid"
3106 mjpeg_qsv_decoder_select="qsvdec"
3107 mjpeg_qsv_encoder_deps="libmfx"
3108 mjpeg_qsv_encoder_select="qsvenc"
3109 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
3110 mjpeg_vaapi_encoder_select="cbs_jpeg jpegtables vaapi_encode"
3111 mp3_mf_encoder_deps="mediafoundation"
3112 mpeg1_cuvid_decoder_deps="cuvid"
3113 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
3114 mpeg2_crystalhd_decoder_select="crystalhd"
3115 mpeg2_cuvid_decoder_deps="cuvid"
3116 mpeg2_mmal_decoder_deps="mmal"
3117 mpeg2_mediacodec_decoder_deps="mediacodec"
3118 mpeg2_qsv_decoder_select="qsvdec"
3119 mpeg2_qsv_encoder_select="qsvenc"
3120 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
3121 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
3122 mpeg4_crystalhd_decoder_select="crystalhd"
3123 mpeg4_cuvid_decoder_deps="cuvid"
3124 mpeg4_mediacodec_decoder_deps="mediacodec"
3125 mpeg4_mmal_decoder_deps="mmal"
3126 mpeg4_omx_encoder_deps="omx"
3127 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
3128 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
3129 msmpeg4_crystalhd_decoder_select="crystalhd"
3130 nvenc_h264_encoder_select="h264_nvenc_encoder"
3131 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
3132 vc1_crystalhd_decoder_select="crystalhd"
3133 vc1_cuvid_decoder_deps="cuvid"
3134 vc1_mmal_decoder_deps="mmal"
3135 vc1_qsv_decoder_select="qsvdec"
3136 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
3137 vp8_cuvid_decoder_deps="cuvid"
3138 vp8_mediacodec_decoder_deps="mediacodec"
3139 vp8_qsv_decoder_select="qsvdec"
3140 vp8_rkmpp_decoder_deps="rkmpp"
3141 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
3142 vp8_vaapi_encoder_select="vaapi_encode"
3143 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
3144 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
3145 vp9_cuvid_decoder_deps="cuvid"
3146 vp9_mediacodec_decoder_deps="mediacodec"
3147 vp9_qsv_decoder_select="qsvdec"
3148 vp9_rkmpp_decoder_deps="rkmpp"
3149 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
3150 vp9_vaapi_encoder_select="vaapi_encode"
3151 vp9_qsv_encoder_deps="libmfx MFX_CODEC_VP9"
3152 vp9_qsv_encoder_select="qsvenc"
3153 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
3154 wmv3_crystalhd_decoder_select="crystalhd"
3155 av1_qsv_decoder_select="qsvdec"
3156
3157 # parsers
3158 aac_parser_select="adts_header"
3159 av1_parser_select="cbs_av1"
3160 h264_parser_select="atsc_a53 golomb h264dsp h264parse"
3161 hevc_parser_select="hevcparse"
3162 mpegaudio_parser_select="mpegaudioheader"
3163 mpegvideo_parser_select="mpegvideo"
3164 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
3165 vc1_parser_select="vc1dsp"
3166
3167 # bitstream_filters
3168 aac_adtstoasc_bsf_select="adts_header"
3169 av1_frame_merge_bsf_select="cbs_av1"
3170 av1_frame_split_bsf_select="cbs_av1"
3171 av1_metadata_bsf_select="cbs_av1"
3172 eac3_core_bsf_select="ac3_parser"
3173 filter_units_bsf_select="cbs"
3174 h264_metadata_bsf_deps="const_nan"
3175 h264_metadata_bsf_select="cbs_h264"
3176 h264_redundant_pps_bsf_select="cbs_h264"
3177 hevc_metadata_bsf_select="cbs_h265"
3178 mjpeg2jpeg_bsf_select="jpegtables"
3179 mpeg2_metadata_bsf_select="cbs_mpeg2"
3180 trace_headers_bsf_select="cbs"
3181 vp9_metadata_bsf_select="cbs_vp9"
3182
3183 # external libraries
3184 aac_at_decoder_deps="audiotoolbox"
3185 aac_at_decoder_select="aac_adtstoasc_bsf"
3186 ac3_at_decoder_deps="audiotoolbox"
3187 ac3_at_decoder_select="ac3_parser"
3188 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
3189 alac_at_decoder_deps="audiotoolbox"
3190 amr_nb_at_decoder_deps="audiotoolbox"
3191 avisynth_deps_any="libdl LoadLibrary"
3192 avisynth_demuxer_deps="avisynth"
3193 avisynth_demuxer_select="riffdec"
3194 eac3_at_decoder_deps="audiotoolbox"
3195 eac3_at_decoder_select="ac3_parser"
3196 gsm_ms_at_decoder_deps="audiotoolbox"
3197 ilbc_at_decoder_deps="audiotoolbox"
3198 mp1_at_decoder_deps="audiotoolbox"
3199 mp2_at_decoder_deps="audiotoolbox"
3200 mp3_at_decoder_deps="audiotoolbox"
3201 mp1_at_decoder_select="mpegaudioheader"
3202 mp2_at_decoder_select="mpegaudioheader"
3203 mp3_at_decoder_select="mpegaudioheader"
3204 pcm_alaw_at_decoder_deps="audiotoolbox"
3205 pcm_mulaw_at_decoder_deps="audiotoolbox"
3206 qdmc_decoder_select="fft"
3207 qdmc_at_decoder_deps="audiotoolbox"
3208 qdm2_at_decoder_deps="audiotoolbox"
3209 aac_at_encoder_deps="audiotoolbox"
3210 aac_at_encoder_select="audio_frame_queue"
3211 alac_at_encoder_deps="audiotoolbox"
3212 alac_at_encoder_select="audio_frame_queue"
3213 ilbc_at_encoder_deps="audiotoolbox"
3214 ilbc_at_encoder_select="audio_frame_queue"
3215 pcm_alaw_at_encoder_deps="audiotoolbox"
3216 pcm_alaw_at_encoder_select="audio_frame_queue"
3217 pcm_mulaw_at_encoder_deps="audiotoolbox"
3218 pcm_mulaw_at_encoder_select="audio_frame_queue"
3219 chromaprint_muxer_deps="chromaprint"
3220 h264_videotoolbox_encoder_deps="pthreads"
3221 h264_videotoolbox_encoder_select="atsc_a53 videotoolbox_encoder"
3222 hevc_videotoolbox_encoder_deps="pthreads"
3223 hevc_videotoolbox_encoder_select="atsc_a53 videotoolbox_encoder"
3224 libaom_av1_decoder_deps="libaom"
3225 libaom_av1_encoder_deps="libaom"
3226 libaom_av1_encoder_select="extract_extradata_bsf"
3227 libaribb24_decoder_deps="libaribb24"
3228 libcelt_decoder_deps="libcelt"
3229 libcodec2_decoder_deps="libcodec2"
3230 libcodec2_encoder_deps="libcodec2"
3231 libdav1d_decoder_deps="libdav1d"
3232 libdav1d_decoder_select="atsc_a53"
3233 libdavs2_decoder_deps="libdavs2"
3234 libfdk_aac_decoder_deps="libfdk_aac"
3235 libfdk_aac_encoder_deps="libfdk_aac"
3236 libfdk_aac_encoder_select="audio_frame_queue"
3237 libgme_demuxer_deps="libgme"
3238 libgsm_decoder_deps="libgsm"
3239 libgsm_encoder_deps="libgsm"
3240 libgsm_ms_decoder_deps="libgsm"
3241 libgsm_ms_encoder_deps="libgsm"
3242 libilbc_decoder_deps="libilbc"
3243 libilbc_encoder_deps="libilbc"
3244 libkvazaar_encoder_deps="libkvazaar"
3245 libmodplug_demuxer_deps="libmodplug"
3246 libmp3lame_encoder_deps="libmp3lame"
3247 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
3248 libopencore_amrnb_decoder_deps="libopencore_amrnb"
3249 libopencore_amrnb_encoder_deps="libopencore_amrnb"
3250 libopencore_amrnb_encoder_select="audio_frame_queue"
3251 libopencore_amrwb_decoder_deps="libopencore_amrwb"
3252 libopenh264_decoder_deps="libopenh264"
3253 libopenh264_decoder_select="h264_mp4toannexb_bsf"
3254 libopenh264_encoder_deps="libopenh264"
3255 libopenjpeg_decoder_deps="libopenjpeg"
3256 libopenjpeg_encoder_deps="libopenjpeg"
3257 libopenmpt_demuxer_deps="libopenmpt"
3258 libopus_decoder_deps="libopus"
3259 libopus_encoder_deps="libopus"
3260 libopus_encoder_select="audio_frame_queue"
3261 librav1e_encoder_deps="librav1e"
3262 librav1e_encoder_select="extract_extradata_bsf"
3263 librsvg_decoder_deps="librsvg"
3264 libshine_encoder_deps="libshine"
3265 libshine_encoder_select="audio_frame_queue"
3266 libspeex_decoder_deps="libspeex"
3267 libspeex_encoder_deps="libspeex"
3268 libspeex_encoder_select="audio_frame_queue"
3269 libsvtav1_encoder_deps="libsvtav1"
3270 libtheora_encoder_deps="libtheora"
3271 libtwolame_encoder_deps="libtwolame"
3272 libuavs3d_decoder_deps="libuavs3d"
3273 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
3274 libvorbis_decoder_deps="libvorbis"
3275 libvorbis_encoder_deps="libvorbis libvorbisenc"
3276 libvorbis_encoder_select="audio_frame_queue"
3277 libvpx_vp8_decoder_deps="libvpx"
3278 libvpx_vp8_encoder_deps="libvpx"
3279 libvpx_vp9_decoder_deps="libvpx"
3280 libvpx_vp9_encoder_deps="libvpx"
3281 libwebp_encoder_deps="libwebp"
3282 libwebp_anim_encoder_deps="libwebp"
3283 libx262_encoder_deps="libx262"
3284 libx264_encoder_deps="libx264"
3285 libx264_encoder_select="atsc_a53"
3286 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
3287 libx264rgb_encoder_select="libx264_encoder"
3288 libx265_encoder_deps="libx265"
3289 libxavs_encoder_deps="libxavs"
3290 libxavs2_encoder_deps="libxavs2"
3291 libxvid_encoder_deps="libxvid"
3292 libzvbi_teletext_decoder_deps="libzvbi"
3293 vapoursynth_demuxer_deps="vapoursynth"
3294 videotoolbox_suggest="coreservices"
3295 videotoolbox_deps="corefoundation coremedia corevideo"
3296 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
3297
3298 # demuxers / muxers
3299 ac3_demuxer_select="ac3_parser"
3300 act_demuxer_select="riffdec"
3301 aiff_muxer_select="iso_media"
3302 asf_demuxer_select="riffdec"
3303 asf_o_demuxer_select="riffdec"
3304 asf_muxer_select="riffenc"
3305 asf_stream_muxer_select="asf_muxer"
3306 av1_demuxer_select="av1_frame_merge_bsf av1_parser"
3307 avi_demuxer_select="iso_media riffdec exif"
3308 avi_muxer_select="riffenc"
3309 caf_demuxer_select="iso_media riffdec"
3310 caf_muxer_select="iso_media"
3311 dash_muxer_select="mp4_muxer"
3312 dash_demuxer_deps="libxml2"
3313 dirac_demuxer_select="dirac_parser"
3314 dts_demuxer_select="dca_parser"
3315 dtshd_demuxer_select="dca_parser"
3316 dv_demuxer_select="dvprofile"
3317 dv_muxer_select="dvprofile"
3318 dxa_demuxer_select="riffdec"
3319 eac3_demuxer_select="ac3_parser"
3320 f4v_muxer_select="mov_muxer"
3321 fifo_muxer_deps="threads"
3322 flac_demuxer_select="flac_parser"
3323 flv_muxer_select="aac_adtstoasc_bsf"
3324 gxf_muxer_select="pcm_rechunk_bsf"
3325 hds_muxer_select="flv_muxer"
3326 hls_muxer_select="mpegts_muxer"
3327 hls_muxer_suggest="gcrypt openssl"
3328 image2_alias_pix_demuxer_select="image2_demuxer"
3329 image2_brender_pix_demuxer_select="image2_demuxer"
3330 ipod_muxer_select="mov_muxer"
3331 ismv_muxer_select="mov_muxer"
3332 ivf_muxer_select="av1_metadata_bsf vp9_superframe_bsf"
3333 latm_muxer_select="aac_adtstoasc_bsf"
3334 matroska_audio_muxer_select="matroska_muxer"
3335 matroska_demuxer_select="iso_media riffdec"
3336 matroska_demuxer_suggest="bzlib lzo zlib"
3337 matroska_muxer_select="iso_media riffenc vp9_superframe_bsf aac_adtstoasc_bsf"
3338 mlp_demuxer_select="mlp_parser"
3339 mmf_muxer_select="riffenc"
3340 mov_demuxer_select="iso_media riffdec"
3341 mov_demuxer_suggest="zlib"
3342 mov_muxer_select="iso_media riffenc rtpenc_chain vp9_superframe_bsf aac_adtstoasc_bsf"
3343 mp3_demuxer_select="mpegaudio_parser"
3344 mp3_muxer_select="mpegaudioheader"
3345 mp4_muxer_select="mov_muxer"
3346 mpegts_demuxer_select="iso_media"
3347 mpegts_muxer_select="ac3_parser adts_muxer latm_muxer h264_mp4toannexb_bsf hevc_mp4toannexb_bsf"
3348 mpegtsraw_demuxer_select="mpegts_demuxer"
3349 mxf_muxer_select="golomb pcm_rechunk_bsf"
3350 mxf_d10_muxer_select="mxf_muxer"
3351 mxf_opatom_muxer_select="mxf_muxer"
3352 nut_muxer_select="riffenc"
3353 nuv_demuxer_select="riffdec"
3354 obu_demuxer_select="av1_frame_merge_bsf av1_parser"
3355 oga_muxer_select="ogg_muxer"
3356 ogg_demuxer_select="dirac_parse"
3357 ogv_muxer_select="ogg_muxer"
3358 opus_muxer_select="ogg_muxer"
3359 psp_muxer_select="mov_muxer"
3360 rtp_demuxer_select="sdp_demuxer"
3361 rtp_muxer_select="golomb jpegtables"
3362 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3363 rtsp_demuxer_select="http_protocol rtpdec"
3364 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3365 sap_demuxer_select="sdp_demuxer"
3366 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3367 sdp_demuxer_select="rtpdec"
3368 smoothstreaming_muxer_select="ismv_muxer"
3369 spdif_demuxer_select="adts_header"
3370 spdif_muxer_select="adts_header"
3371 spx_muxer_select="ogg_muxer"
3372 swf_demuxer_suggest="zlib"
3373 tak_demuxer_select="tak_parser"
3374 truehd_demuxer_select="mlp_parser"
3375 tg2_muxer_select="mov_muxer"
3376 tgp_muxer_select="mov_muxer"
3377 vobsub_demuxer_select="mpegps_demuxer"
3378 w64_demuxer_select="wav_demuxer"
3379 w64_muxer_select="wav_muxer"
3380 wav_demuxer_select="riffdec"
3381 wav_muxer_select="riffenc"
3382 webm_chunk_muxer_select="webm_muxer"
3383 webm_muxer_select="iso_media riffenc"
3384 webm_dash_manifest_demuxer_select="matroska_demuxer"
3385 wtv_demuxer_select="mpegts_demuxer riffdec"
3386 wtv_muxer_select="mpegts_muxer riffenc"
3387 xmv_demuxer_select="riffdec"
3388 xwma_demuxer_select="riffdec"
3389
3390 # indevs / outdevs
3391 android_camera_indev_deps="android camera2ndk mediandk pthreads"
3392 android_camera_indev_extralibs="-landroid -lcamera2ndk -lmediandk"
3393 alsa_indev_deps="alsa"
3394 alsa_outdev_deps="alsa"
3395 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3396 avfoundation_indev_suggest="coregraphics applicationservices"
3397 avfoundation_indev_extralibs="-framework Foundation"
3398 audiotoolbox_outdev_deps="audiotoolbox pthreads"
3399 audiotoolbox_outdev_extralibs="-framework AudioToolbox -framework CoreAudio"
3400 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3401 caca_outdev_deps="libcaca"
3402 decklink_deps_any="libdl LoadLibrary"
3403 decklink_indev_deps="decklink threads"
3404 decklink_indev_extralibs="-lstdc++"
3405 decklink_outdev_deps="decklink threads"
3406 decklink_outdev_suggest="libklvanc"
3407 decklink_outdev_extralibs="-lstdc++"
3408 dshow_indev_deps="IBaseFilter"
3409 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3410 fbdev_indev_deps="linux_fb_h"
3411 fbdev_outdev_deps="linux_fb_h"
3412 gdigrab_indev_deps="CreateDIBSection"
3413 gdigrab_indev_extralibs="-lgdi32"
3414 gdigrab_indev_select="bmp_decoder"
3415 iec61883_indev_deps="libiec61883"
3416 jack_indev_deps="libjack"
3417 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3418 kmsgrab_indev_deps="libdrm"
3419 lavfi_indev_deps="avfilter"
3420 libcdio_indev_deps="libcdio"
3421 libdc1394_indev_deps="libdc1394"
3422 openal_indev_deps="openal"
3423 opengl_outdev_deps="opengl"
3424 opengl_outdev_suggest="sdl2"
3425 oss_indev_deps_any="sys_soundcard_h"
3426 oss_outdev_deps_any="sys_soundcard_h"
3427 pulse_indev_deps="libpulse"
3428 pulse_outdev_deps="libpulse"
3429 sdl2_outdev_deps="sdl2"
3430 sndio_indev_deps="sndio"
3431 sndio_outdev_deps="sndio"
3432 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3433 v4l2_indev_suggest="libv4l2"
3434 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3435 v4l2_outdev_suggest="libv4l2"
3436 vfwcap_indev_deps="vfw32 vfwcap_defines"
3437 xcbgrab_indev_deps="libxcb"
3438 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3439 xv_outdev_deps="xlib"
3440
3441 # protocols
3442 async_protocol_deps="threads"
3443 bluray_protocol_deps="libbluray"
3444 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3445 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl mbedtls"
3446 ffrtmpcrypt_protocol_select="tcp_protocol"
3447 ffrtmphttp_protocol_conflict="librtmp_protocol"
3448 ffrtmphttp_protocol_select="http_protocol"
3449 ftp_protocol_select="tcp_protocol"
3450 gopher_protocol_select="network"
3451 http_protocol_select="tcp_protocol"
3452 http_protocol_suggest="zlib"
3453 httpproxy_protocol_select="tcp_protocol"
3454 httpproxy_protocol_suggest="zlib"
3455 https_protocol_select="tls_protocol"
3456 https_protocol_suggest="zlib"
3457 icecast_protocol_select="http_protocol"
3458 mmsh_protocol_select="http_protocol"
3459 mmst_protocol_select="network"
3460 rtmp_protocol_conflict="librtmp_protocol"
3461 rtmp_protocol_select="tcp_protocol"
3462 rtmp_protocol_suggest="zlib"
3463 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3464 rtmpe_protocol_suggest="zlib"
3465 rtmps_protocol_conflict="librtmp_protocol"
3466 rtmps_protocol_select="tls_protocol"
3467 rtmps_protocol_suggest="zlib"
3468 rtmpt_protocol_select="ffrtmphttp_protocol"
3469 rtmpt_protocol_suggest="zlib"
3470 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3471 rtmpte_protocol_suggest="zlib"
3472 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3473 rtmpts_protocol_suggest="zlib"
3474 rtp_protocol_select="udp_protocol"
3475 schannel_conflict="openssl gnutls libtls mbedtls"
3476 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3477 sctp_protocol_select="network"
3478 securetransport_conflict="openssl gnutls libtls mbedtls"
3479 srtp_protocol_select="rtp_protocol srtp"
3480 tcp_protocol_select="network"
3481 tls_protocol_deps_any="gnutls openssl schannel securetransport libtls mbedtls"
3482 tls_protocol_select="tcp_protocol"
3483 udp_protocol_select="network"
3484 udplite_protocol_select="network"
3485 unix_protocol_deps="sys_un_h"
3486 unix_protocol_select="network"
3487
3488 # external library protocols
3489 libamqp_protocol_deps="librabbitmq"
3490 libamqp_protocol_select="network"
3491 librtmp_protocol_deps="librtmp"
3492 librtmpe_protocol_deps="librtmp"
3493 librtmps_protocol_deps="librtmp"
3494 librtmpt_protocol_deps="librtmp"
3495 librtmpte_protocol_deps="librtmp"
3496 libsmbclient_protocol_deps="libsmbclient gplv3"
3497 libsrt_protocol_deps="libsrt"
3498 libsrt_protocol_select="network"
3499 libssh_protocol_deps="libssh"
3500 libtls_conflict="openssl gnutls mbedtls"
3501 libzmq_protocol_deps="libzmq"
3502 libzmq_protocol_select="network"
3503
3504 # filters
3505 afftdn_filter_deps="avcodec"
3506 afftdn_filter_select="fft"
3507 afftfilt_filter_deps="avcodec"
3508 afftfilt_filter_select="fft"
3509 afir_filter_deps="avcodec"
3510 afir_filter_select="rdft"
3511 amovie_filter_deps="avcodec avformat"
3512 aresample_filter_deps="swresample"
3513 asoftclip_filter_deps="swresample"
3514 asr_filter_deps="pocketsphinx"
3515 ass_filter_deps="libass"
3516 atempo_filter_deps="avcodec"
3517 atempo_filter_select="rdft"
3518 avgblur_opencl_filter_deps="opencl"
3519 avgblur_vulkan_filter_deps="vulkan libglslang"
3520 azmq_filter_deps="libzmq"
3521 blackframe_filter_deps="gpl"
3522 bm3d_filter_deps="avcodec"
3523 bm3d_filter_select="dct"
3524 boxblur_filter_deps="gpl"
3525 boxblur_opencl_filter_deps="opencl gpl"
3526 bs2b_filter_deps="libbs2b"
3527 chromaber_vulkan_filter_deps="vulkan libglslang"
3528 colorkey_opencl_filter_deps="opencl"
3529 colormatrix_filter_deps="gpl"
3530 convolution_opencl_filter_deps="opencl"
3531 convolve_filter_deps="avcodec"
3532 convolve_filter_select="fft"
3533 coreimage_filter_deps="coreimage appkit"
3534 coreimage_filter_extralibs="-framework OpenGL"
3535 coreimagesrc_filter_deps="coreimage appkit"
3536 coreimagesrc_filter_extralibs="-framework OpenGL"
3537 cover_rect_filter_deps="avcodec avformat gpl"
3538 cropdetect_filter_deps="gpl"
3539 deconvolve_filter_deps="avcodec"
3540 deconvolve_filter_select="fft"
3541 deinterlace_qsv_filter_deps="libmfx"
3542 deinterlace_vaapi_filter_deps="vaapi"
3543 delogo_filter_deps="gpl"
3544 denoise_vaapi_filter_deps="vaapi"
3545 derain_filter_select="dnn"
3546 deshake_filter_select="pixelutils"
3547 deshake_opencl_filter_deps="opencl"
3548 dilation_opencl_filter_deps="opencl"
3549 dnn_processing_filter_select="dnn"
3550 drawtext_filter_deps="libfreetype"
3551 drawtext_filter_suggest="libfontconfig libfribidi"
3552 elbg_filter_deps="avcodec"
3553 eq_filter_deps="gpl"
3554 erosion_opencl_filter_deps="opencl"
3555 fftfilt_filter_deps="avcodec"
3556 fftfilt_filter_select="rdft"
3557 fftdnoiz_filter_deps="avcodec"
3558 fftdnoiz_filter_select="fft"
3559 find_rect_filter_deps="avcodec avformat gpl"
3560 firequalizer_filter_deps="avcodec"
3561 firequalizer_filter_select="rdft"
3562 flite_filter_deps="libflite"
3563 framerate_filter_select="scene_sad"
3564 freezedetect_filter_select="scene_sad"
3565 frei0r_filter_deps="frei0r libdl"
3566 frei0r_src_filter_deps="frei0r libdl"
3567 fspp_filter_deps="gpl"
3568 headphone_filter_select="fft"
3569 histeq_filter_deps="gpl"
3570 hqdn3d_filter_deps="gpl"
3571 interlace_filter_deps="gpl"
3572 kerndeint_filter_deps="gpl"
3573 ladspa_filter_deps="ladspa libdl"
3574 lensfun_filter_deps="liblensfun version3"
3575 lv2_filter_deps="lv2"
3576 mcdeint_filter_deps="avcodec gpl"
3577 movie_filter_deps="avcodec avformat"
3578 mpdecimate_filter_deps="gpl"
3579 mpdecimate_filter_select="pixelutils"
3580 minterpolate_filter_select="scene_sad"
3581 mptestsrc_filter_deps="gpl"
3582 negate_filter_deps="lut_filter"
3583 nlmeans_opencl_filter_deps="opencl"
3584 nnedi_filter_deps="gpl"
3585 ocr_filter_deps="libtesseract"
3586 ocv_filter_deps="libopencv"
3587 openclsrc_filter_deps="opencl"
3588 overlay_opencl_filter_deps="opencl"
3589 overlay_qsv_filter_deps="libmfx"
3590 overlay_qsv_filter_select="qsvvpp"
3591 overlay_vulkan_filter_deps="vulkan libglslang"
3592 owdenoise_filter_deps="gpl"
3593 pad_opencl_filter_deps="opencl"
3594 pan_filter_deps="swresample"
3595 perspective_filter_deps="gpl"
3596 phase_filter_deps="gpl"
3597 pp7_filter_deps="gpl"
3598 pp_filter_deps="gpl postproc"
3599 prewitt_opencl_filter_deps="opencl"
3600 procamp_vaapi_filter_deps="vaapi"
3601 program_opencl_filter_deps="opencl"
3602 pullup_filter_deps="gpl"
3603 removelogo_filter_deps="avcodec avformat swscale"
3604 repeatfields_filter_deps="gpl"
3605 resample_filter_deps="avresample"
3606 roberts_opencl_filter_deps="opencl"
3607 rubberband_filter_deps="librubberband"
3608 sab_filter_deps="gpl swscale"
3609 scale2ref_filter_deps="swscale"
3610 scale_filter_deps="swscale"
3611 scale_qsv_filter_deps="libmfx"
3612 scdet_filter_select="scene_sad"
3613 select_filter_select="scene_sad"
3614 sharpness_vaapi_filter_deps="vaapi"
3615 showcqt_filter_deps="avcodec avformat swscale"
3616 showcqt_filter_suggest="libfontconfig libfreetype"
3617 showcqt_filter_select="fft"
3618 showfreqs_filter_deps="avcodec"
3619 showfreqs_filter_select="fft"
3620 showspatial_filter_select="fft"
3621 showspectrum_filter_deps="avcodec"
3622 showspectrum_filter_select="fft"
3623 showspectrumpic_filter_deps="avcodec"
3624 showspectrumpic_filter_select="fft"
3625 signature_filter_deps="gpl avcodec avformat"
3626 sinc_filter_select="rdft"
3627 smartblur_filter_deps="gpl swscale"
3628 sobel_opencl_filter_deps="opencl"
3629 sofalizer_filter_deps="libmysofa avcodec"
3630 sofalizer_filter_select="fft"
3631 spectrumsynth_filter_deps="avcodec"
3632 spectrumsynth_filter_select="fft"
3633 spp_filter_deps="gpl avcodec"
3634 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3635 sr_filter_deps="avformat swscale"
3636 sr_filter_select="dnn"
3637 stereo3d_filter_deps="gpl"
3638 subtitles_filter_deps="avformat avcodec libass"
3639 super2xsai_filter_deps="gpl"
3640 pixfmts_super2xsai_test_deps="super2xsai_filter"
3641 superequalizer_filter_select="rdft"
3642 surround_filter_select="rdft"
3643 tinterlace_filter_deps="gpl"
3644 tinterlace_merge_test_deps="tinterlace_filter"
3645 tinterlace_pad_test_deps="tinterlace_filter"
3646 tonemap_filter_deps="const_nan"
3647 tonemap_vaapi_filter_deps="vaapi VAProcFilterParameterBufferHDRToneMapping"
3648 tonemap_opencl_filter_deps="opencl const_nan"
3649 transpose_opencl_filter_deps="opencl"
3650 transpose_vaapi_filter_deps="vaapi VAProcPipelineCaps_rotation_flags"
3651 unsharp_opencl_filter_deps="opencl"
3652 uspp_filter_deps="gpl avcodec"
3653 vaguedenoiser_filter_deps="gpl"
3654 vidstabdetect_filter_deps="libvidstab"
3655 vidstabtransform_filter_deps="libvidstab"
3656 libvmaf_filter_deps="libvmaf pthreads"
3657 zmq_filter_deps="libzmq"
3658 zoompan_filter_deps="swscale"
3659 zscale_filter_deps="libzimg const_nan"
3660 scale_vaapi_filter_deps="vaapi"
3661 scale_vulkan_filter_deps="vulkan libglslang"
3662 vpp_qsv_filter_deps="libmfx"
3663 vpp_qsv_filter_select="qsvvpp"
3664 xfade_opencl_filter_deps="opencl"
3665 yadif_cuda_filter_deps="ffnvcodec"
3666 yadif_cuda_filter_deps_any="cuda_nvcc cuda_llvm"
3667
3668 # examples
3669 avio_list_dir_deps="avformat avutil"
3670 avio_reading_deps="avformat avcodec avutil"
3671 decode_audio_example_deps="avcodec avutil"
3672 decode_video_example_deps="avcodec avutil"
3673 demuxing_decoding_example_deps="avcodec avformat avutil"
3674 encode_audio_example_deps="avcodec avutil"
3675 encode_video_example_deps="avcodec avutil"
3676 extract_mvs_example_deps="avcodec avformat avutil"
3677 filter_audio_example_deps="avfilter avutil"
3678 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3679 filtering_video_example_deps="avfilter avcodec avformat avutil"
3680 http_multiclient_example_deps="avformat avutil fork"
3681 hw_decode_example_deps="avcodec avformat avutil"
3682 metadata_example_deps="avformat avutil"
3683 muxing_example_deps="avcodec avformat avutil swscale"
3684 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3685 remuxing_example_deps="avcodec avformat avutil"
3686 resampling_audio_example_deps="avutil swresample"
3687 scaling_video_example_deps="avutil swscale"
3688 transcode_aac_example_deps="avcodec avformat swresample"
3689 transcoding_example_deps="avfilter avcodec avformat avutil"
3690 vaapi_encode_example_deps="avcodec avutil h264_vaapi_encoder"
3691 vaapi_transcode_example_deps="avcodec avformat avutil h264_vaapi_encoder"
3692
3693 # EXTRALIBS_LIST
3694 cpu_init_extralibs="pthreads_extralibs"
3695 cws2fws_extralibs="zlib_extralibs"
3696
3697 # libraries, in any order
3698 avcodec_deps="avutil"
3699 avcodec_suggest="libm"
3700 avcodec_select="null_bsf"
3701 avdevice_deps="avformat avcodec avutil"
3702 avdevice_suggest="libm"
3703 avfilter_deps="avutil"
3704 avfilter_suggest="libm"
3705 avformat_deps="avcodec avutil"
3706 avformat_suggest="libm network zlib"
3707 avresample_deps="avutil"
3708 avresample_suggest="libm"
3709 avutil_suggest="clock_gettime ffnvcodec libm libdrm libmfx opencl user32 vaapi vulkan videotoolbox corefoundation corevideo coremedia bcrypt"
3710 postproc_deps="avutil gpl"
3711 postproc_suggest="libm"
3712 swresample_deps="avutil"
3713 swresample_suggest="libm libsoxr"
3714 swscale_deps="avutil"
3715 swscale_suggest="libm"
3716
3717 avcodec_extralibs="pthreads_extralibs iconv_extralibs dxva2_extralibs"
3718 avfilter_extralibs="pthreads_extralibs"
3719 avutil_extralibs="d3d11va_extralibs nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3720
3721 # programs
3722 ffmpeg_deps="avcodec avfilter avformat"
3723 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3724                hflip_filter null_filter
3725                transpose_filter trim_filter vflip_filter"
3726 ffmpeg_suggest="ole32 psapi shell32"
3727 ffplay_deps="avcodec avformat swscale swresample sdl2"
3728 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3729 ffplay_suggest="shell32"
3730 ffprobe_deps="avcodec avformat"
3731 ffprobe_suggest="shell32"
3732
3733 # documentation
3734 podpages_deps="perl"
3735 manpages_deps="perl pod2man"
3736 htmlpages_deps="perl"
3737 htmlpages_deps_any="makeinfo_html texi2html"
3738 txtpages_deps="perl makeinfo"
3739 doc_deps_any="manpages htmlpages podpages txtpages"
3740
3741 # default parameters
3742
3743 logfile="ffbuild/config.log"
3744
3745 # installation paths
3746 prefix_default="/usr/local"
3747 bindir_default='${prefix}/bin'
3748 datadir_default='${prefix}/share/ffmpeg'
3749 docdir_default='${prefix}/share/doc/ffmpeg'
3750 incdir_default='${prefix}/include'
3751 libdir_default='${prefix}/lib'
3752 mandir_default='${prefix}/share/man'
3753
3754 # toolchain
3755 ar_default="ar"
3756 cc_default="gcc"
3757 cxx_default="g++"
3758 host_cc_default="gcc"
3759 doxygen_default="doxygen"
3760 install="install"
3761 ln_s_default="ln -s -f"
3762 nm_default="nm -g"
3763 pkg_config_default=pkg-config
3764 ranlib_default="ranlib"
3765 strip_default="strip"
3766 version_script='--version-script'
3767 objformat="elf32"
3768 x86asmexe_default="nasm"
3769 windres_default="windres"
3770 striptype="direct"
3771
3772 # OS
3773 target_os_default=$(tolower $(uname -s))
3774 host_os=$target_os_default
3775
3776 # machine
3777 if test "$target_os_default" = aix; then
3778     arch_default=$(uname -p)
3779     strip_default="strip -X32_64"
3780     nm_default="nm -g -X32_64"
3781 else
3782     arch_default=$(uname -m)
3783 fi
3784 cpu="generic"
3785 intrinsics="none"
3786
3787 # configurable options
3788 enable $PROGRAM_LIST
3789 enable $DOCUMENT_LIST
3790 enable $EXAMPLE_LIST
3791 enable $(filter_out avresample $LIBRARY_LIST)
3792 enable stripping
3793
3794 enable asm
3795 enable debug
3796 enable doc
3797 enable faan faandct faanidct
3798 enable large_tests
3799 enable optimizations
3800 enable runtime_cpudetect
3801 enable safe_bitstream_reader
3802 enable static
3803 enable swscale_alpha
3804 enable valgrind_backtrace
3805
3806 sws_max_filter_size_default=256
3807 set_default sws_max_filter_size
3808
3809 # internal components are enabled by default
3810 enable $EXTRALIBS_LIST
3811
3812 # Avoid external, non-system, libraries getting enabled by dependency resolution
3813 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3814
3815 # build settings
3816 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3817 LIBPREF="lib"
3818 LIBSUF=".a"
3819 FULLNAME='$(NAME)$(BUILDSUF)'
3820 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3821 SLIBPREF="lib"
3822 SLIBSUF=".so"
3823 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3824 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3825 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3826 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3827 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3828 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3829 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3830
3831 asflags_filter=echo
3832 cflags_filter=echo
3833 ldflags_filter=echo
3834
3835 AS_C='-c'
3836 AS_O='-o $@'
3837 CC_C='-c'
3838 CC_E='-E -o $@'
3839 CC_O='-o $@'
3840 CXX_C='-c'
3841 CXX_O='-o $@'
3842 OBJCC_C='-c'
3843 OBJCC_E='-E -o $@'
3844 OBJCC_O='-o $@'
3845 X86ASM_O='-o $@'
3846 LD_O='-o $@'
3847 LD_LIB='-l%'
3848 LD_PATH='-L'
3849 HOSTCC_C='-c'
3850 HOSTCC_E='-E -o $@'
3851 HOSTCC_O='-o $@'
3852 HOSTLD_O='-o $@'
3853 NVCC_C='-c'
3854 NVCC_O='-o $@'
3855
3856 host_extralibs='-lm'
3857 host_cflags_filter=echo
3858 host_ldflags_filter=echo
3859
3860 target_path='$(CURDIR)'
3861
3862 # since the object filename is not given with the -MM flag, the compiler
3863 # is only able to print the basename, and we must add the path ourselves
3864 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3865 DEPFLAGS='-MM'
3866
3867 mkdir -p ffbuild
3868
3869 # find source path
3870 if test -f configure; then
3871     source_path=.
3872 elif test -f src/configure; then
3873     source_path=src
3874 else
3875     source_path=$(cd $(dirname "$0"); pwd)
3876     case "$source_path" in
3877         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3878     esac
3879     test -e "$source_path/config.h" &&
3880         die "Out of tree builds are impossible with config.h in source dir."
3881 fi
3882
3883 for v in "$@"; do
3884     r=${v#*=}
3885     l=${v%"$r"}
3886     r=$(sh_quote "$r")
3887     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3888 done
3889
3890 find_things_extern(){
3891     thing=$1
3892     pattern=$2
3893     file=$source_path/$3
3894     out=${4:-$thing}
3895     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$out/p" "$file"
3896 }
3897
3898 find_filters_extern(){
3899     file=$source_path/$1
3900     sed -n 's/^extern AVFilter ff_[avfsinkrc]\{2,5\}_\([[:alnum:]_]\{1,\}\);/\1_filter/p' $file
3901 }
3902
3903 FILTER_LIST=$(find_filters_extern libavfilter/allfilters.c)
3904 OUTDEV_LIST=$(find_things_extern muxer AVOutputFormat libavdevice/alldevices.c outdev)
3905 INDEV_LIST=$(find_things_extern demuxer AVInputFormat libavdevice/alldevices.c indev)
3906 MUXER_LIST=$(find_things_extern muxer AVOutputFormat libavformat/allformats.c)
3907 DEMUXER_LIST=$(find_things_extern demuxer AVInputFormat libavformat/allformats.c)
3908 ENCODER_LIST=$(find_things_extern encoder AVCodec libavcodec/allcodecs.c)
3909 DECODER_LIST=$(find_things_extern decoder AVCodec libavcodec/allcodecs.c)
3910 CODEC_LIST="
3911     $ENCODER_LIST
3912     $DECODER_LIST
3913 "
3914 PARSER_LIST=$(find_things_extern parser AVCodecParser libavcodec/parsers.c)
3915 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3916 HWACCEL_LIST=$(find_things_extern hwaccel AVHWAccel libavcodec/hwaccels.h)
3917 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3918
3919 AVCODEC_COMPONENTS_LIST="
3920     $BSF_LIST
3921     $DECODER_LIST
3922     $ENCODER_LIST
3923     $HWACCEL_LIST
3924     $PARSER_LIST
3925 "
3926
3927 AVDEVICE_COMPONENTS_LIST="
3928     $INDEV_LIST
3929     $OUTDEV_LIST
3930 "
3931
3932 AVFILTER_COMPONENTS_LIST="
3933     $FILTER_LIST
3934 "
3935
3936 AVFORMAT_COMPONENTS_LIST="
3937     $DEMUXER_LIST
3938     $MUXER_LIST
3939     $PROTOCOL_LIST
3940 "
3941
3942 ALL_COMPONENTS="
3943     $AVCODEC_COMPONENTS_LIST
3944     $AVDEVICE_COMPONENTS_LIST
3945     $AVFILTER_COMPONENTS_LIST
3946     $AVFORMAT_COMPONENTS_LIST
3947 "
3948
3949 for n in $COMPONENT_LIST; do
3950     v=$(toupper ${n%s})_LIST
3951     eval enable \$$v
3952     eval ${n}_if_any="\$$v"
3953 done
3954
3955 enable $ARCH_EXT_LIST
3956
3957 die_unknown(){
3958     echo "Unknown option \"$1\"."
3959     echo "See $0 --help for available options."
3960     exit 1
3961 }
3962
3963 print_in_columns() {
3964     tr ' ' '\n' | sort | tr '\r\n' '  ' | awk -v col_width=24 -v width="$ncols" '
3965     {
3966         num_cols = width > col_width ? int(width / col_width) : 1;
3967         num_rows = int((NF + num_cols-1) / num_cols);
3968         y = x = 1;
3969         for (y = 1; y <= num_rows; y++) {
3970             i = y;
3971             for (x = 1; x <= num_cols; x++) {
3972                 if (i <= NF) {
3973                   line = sprintf("%s%-" col_width "s", line, $i);
3974                 }
3975                 i = i + num_rows;
3976             }
3977             print line; line = "";
3978         }
3979     }' | sed 's/ *$//'
3980 }
3981
3982 show_list() {
3983     suffix=_$1
3984     shift
3985     echo $* | sed s/$suffix//g | print_in_columns
3986     exit 0
3987 }
3988
3989 rand_list(){
3990     IFS=', '
3991     set -- $*
3992     unset IFS
3993     for thing; do
3994         comp=${thing%:*}
3995         prob=${thing#$comp}
3996         prob=${prob#:}
3997         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3998         echo "prob ${prob:-0.5}"
3999         printf '%s\n' $comp
4000     done
4001 }
4002
4003 do_random(){
4004     action=$1
4005     shift
4006     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
4007     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
4008 }
4009
4010 for opt do
4011     optval="${opt#*=}"
4012     case "$opt" in
4013         --extra-ldflags=*)
4014             add_ldflags $optval
4015         ;;
4016         --extra-ldexeflags=*)
4017             add_ldexeflags $optval
4018         ;;
4019         --extra-ldsoflags=*)
4020             add_ldsoflags $optval
4021         ;;
4022         --extra-ldlibflags=*)
4023             warn "The --extra-ldlibflags option is only provided for compatibility and will be\n"\
4024                  "removed in the future. Use --extra-ldsoflags instead."
4025             add_ldsoflags $optval
4026         ;;
4027         --extra-libs=*)
4028             add_extralibs $optval
4029         ;;
4030         --disable-devices)
4031             disable $INDEV_LIST $OUTDEV_LIST
4032         ;;
4033         --enable-debug=*)
4034             debuglevel="$optval"
4035         ;;
4036         --disable-programs)
4037             disable $PROGRAM_LIST
4038         ;;
4039         --disable-everything)
4040             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
4041         ;;
4042         --disable-all)
4043             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
4044             disable $LIBRARY_LIST $PROGRAM_LIST doc
4045             enable avutil
4046         ;;
4047         --enable-random|--disable-random)
4048             action=${opt%%-random}
4049             do_random ${action#--} $COMPONENT_LIST
4050         ;;
4051         --enable-random=*|--disable-random=*)
4052             action=${opt%%-random=*}
4053             do_random ${action#--} $optval
4054         ;;
4055         --enable-sdl)
4056             enable sdl2
4057         ;;
4058         --enable-*=*|--disable-*=*)
4059             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
4060             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
4061             eval list=\$$(toupper $thing)_LIST
4062             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
4063             list=$(filter "$name" $list)
4064             [ "$list" = "" ] && warn "Option $opt did not match anything"
4065             test $action = enable && warn_if_gets_disabled $list
4066             $action $list
4067         ;;
4068         --enable-yasm|--disable-yasm)
4069             warn "The ${opt} option is only provided for compatibility and will be\n"\
4070                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
4071             test $opt = --enable-yasm && x86asm=yes || x86asm=no
4072         ;;
4073         --yasmexe=*)
4074             warn "The --yasmexe option is only provided for compatibility and will be\n"\
4075                  "removed in the future. Use --x86asmexe instead."
4076             x86asmexe="$optval"
4077         ;;
4078         --enable-?*|--disable-?*)
4079             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
4080             if is_in $option $COMPONENT_LIST; then
4081                 test $action = disable && action=unset
4082                 eval $action \$$(toupper ${option%s})_LIST
4083             elif is_in $option $CMDLINE_SELECT; then
4084                 $action $option
4085             else
4086                 die_unknown $opt
4087             fi
4088         ;;
4089         --list-*)
4090             NAME="${opt#--list-}"
4091             is_in $NAME $COMPONENT_LIST || die_unknown $opt
4092             NAME=${NAME%s}
4093             eval show_list $NAME \$$(toupper $NAME)_LIST
4094         ;;
4095         --help|-h) show_help
4096         ;;
4097         --quiet|-q) quiet=yes
4098         ;;
4099         --fatal-warnings) enable fatal_warnings
4100         ;;
4101         --libfuzzer=*)
4102             libfuzzer_path="$optval"
4103         ;;
4104         *)
4105             optname="${opt%%=*}"
4106             optname="${optname#--}"
4107             optname=$(echo "$optname" | sed 's/-/_/g')
4108             if is_in $optname $CMDLINE_SET; then
4109                 eval $optname='$optval'
4110             elif is_in $optname $CMDLINE_APPEND; then
4111                 append $optname "$optval"
4112             else
4113                 die_unknown $opt
4114             fi
4115         ;;
4116     esac
4117 done
4118
4119 for e in $env; do
4120     eval "export $e"
4121 done
4122
4123 if disabled autodetect; then
4124
4125     # Unless iconv is explicitely disabled by the user, we still want to probe
4126     # for the iconv from the libc.
4127     disabled iconv || enable libc_iconv
4128
4129     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
4130     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
4131 fi
4132 # Mark specifically enabled, but normally autodetected libraries as requested.
4133 for lib in $AUTODETECT_LIBS; do
4134     enabled $lib && request $lib
4135 done
4136 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
4137 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
4138 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
4139
4140 disabled logging && logfile=/dev/null
4141
4142 # command line configuration sanity checks
4143
4144 # we need to build at least one lib type
4145 if ! enabled_any static shared; then
4146     cat <<EOF
4147 At least one library type must be built.
4148 Specify --enable-static to build the static libraries or --enable-shared to
4149 build the shared libraries as well. To only build the shared libraries specify
4150 --disable-static in addition to --enable-shared.
4151 EOF
4152     exit 1
4153 fi
4154
4155 die_license_disabled() {
4156     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
4157 }
4158
4159 die_license_disabled_gpl() {
4160     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
4161 }
4162
4163 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
4164 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
4165
4166 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
4167 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
4168
4169 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4170
4171 if enabled nonfree; then
4172     license="nonfree and unredistributable"
4173 elif enabled gplv3; then
4174     license="GPL version 3 or later"
4175 elif enabled lgplv3; then
4176     license="LGPL version 3 or later"
4177 elif enabled gpl; then
4178     license="GPL version 2 or later"
4179 else
4180     license="LGPL version 2.1 or later"
4181 fi
4182
4183 enabled_all gnutls openssl &&
4184     die "GnuTLS and OpenSSL must not be enabled at the same time."
4185
4186 enabled_all gnutls mbedtls &&
4187     die "GnuTLS and mbedTLS must not be enabled at the same time."
4188
4189 enabled_all openssl mbedtls &&
4190     die "OpenSSL and mbedTLS must not be enabled at the same time."
4191
4192 # Disable all the library-specific components if the library itself
4193 # is disabled, see AVCODEC_LIST and following _LIST variables.
4194
4195 disable_components(){
4196     disabled ${1} && disable $(
4197         eval components="\$$(toupper ${1})_COMPONENTS"
4198         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
4199     )
4200 }
4201
4202 map 'disable_components $v' $LIBRARY_LIST
4203
4204 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
4205 set >> $logfile
4206
4207 test -n "$valgrind" && toolchain="valgrind-memcheck"
4208
4209 enabled ossfuzz && ! echo $CFLAGS | grep -q -- "-fsanitize="  && ! echo $CFLAGS | grep -q -- "-fcoverage-mapping" &&{
4210     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
4211     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
4212 }
4213
4214 case "$toolchain" in
4215     *-asan)
4216         cc_default="${toolchain%-asan}"
4217         add_cflags  -fsanitize=address
4218         add_ldflags -fsanitize=address
4219     ;;
4220     *-msan)
4221         cc_default="${toolchain%-msan}"
4222         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
4223         add_ldflags -fsanitize=memory
4224     ;;
4225     *-tsan)
4226         cc_default="${toolchain%-tsan}"
4227         add_cflags  -fsanitize=thread
4228         add_ldflags -fsanitize=thread
4229         case "$toolchain" in
4230             gcc-tsan)
4231                 add_cflags  -fPIC
4232                 add_ldflags -fPIC
4233                 ;;
4234         esac
4235     ;;
4236     *-usan)
4237         cc_default="${toolchain%-usan}"
4238         add_cflags  -fsanitize=undefined
4239         add_ldflags -fsanitize=undefined
4240     ;;
4241     valgrind-*)
4242         target_exec_default="valgrind"
4243         case "$toolchain" in
4244             valgrind-massif)
4245                 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"
4246                 ;;
4247             valgrind-memcheck)
4248                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
4249                 ;;
4250         esac
4251     ;;
4252     msvc)
4253         # Check whether the current MSVC version needs the C99 converter.
4254         # From MSVC 2013 (compiler major version 18) onwards, it does actually
4255         # support enough of C99 to build ffmpeg. Default to the new
4256         # behaviour if the regexp was unable to match anything, since this
4257         # successfully parses the version number of existing supported
4258         # versions that require the converter (MSVC 2010 and 2012).
4259         cl_major_ver=$(cl.exe 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
4260         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
4261             cc_default="cl.exe"
4262             cxx_default="cl.exe"
4263         else
4264             die "Unsupported MSVC version (2013 or newer required)"
4265         fi
4266         ld_default="$source_path/compat/windows/mslink"
4267         nm_default="dumpbin.exe -symbols"
4268         ar_default="lib.exe"
4269         case "$arch" in
4270         aarch64|arm64)
4271             as_default="armasm64.exe"
4272             ;;
4273         arm*)
4274             as_default="armasm.exe"
4275             ;;
4276         esac
4277         target_os_default="win32"
4278         # Use a relative path for TMPDIR. This makes sure all the
4279         # ffconf temp files are written with a relative path, avoiding
4280         # issues with msys/win32 path conversion for MSVC parameters
4281         # such as -Fo<file> or -out:<file>.
4282         TMPDIR=.
4283     ;;
4284     icl)
4285         cc_default="icl"
4286         ld_default="xilink"
4287         nm_default="dumpbin -symbols"
4288         ar_default="xilib"
4289         target_os_default="win32"
4290         TMPDIR=.
4291     ;;
4292     gcov)
4293         add_cflags  -fprofile-arcs -ftest-coverage
4294         add_ldflags -fprofile-arcs -ftest-coverage
4295     ;;
4296     llvm-cov)
4297         add_cflags -fprofile-arcs -ftest-coverage
4298         add_ldflags --coverage
4299     ;;
4300     hardened)
4301         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
4302         add_cflags   -fno-strict-overflow -fstack-protector-all
4303         add_ldflags  -Wl,-z,relro -Wl,-z,now
4304         add_cflags   -fPIE
4305         add_ldexeflags -fPIE -pie
4306     ;;
4307     ?*)
4308         die "Unknown toolchain $toolchain"
4309     ;;
4310 esac
4311
4312 if test -n "$cross_prefix"; then
4313     test -n "$arch" && test -n "$target_os" ||
4314         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
4315     enable cross_compile
4316 fi
4317
4318 set_default target_os
4319 if test "$target_os" = android; then
4320     cc_default="clang"
4321 fi
4322
4323 ar_default="${cross_prefix}${ar_default}"
4324 cc_default="${cross_prefix}${cc_default}"
4325 cxx_default="${cross_prefix}${cxx_default}"
4326 nm_default="${cross_prefix}${nm_default}"
4327 pkg_config_default="${cross_prefix}${pkg_config_default}"
4328 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
4329     ranlib_default="${cross_prefix}${ranlib_default} -D"
4330 else
4331     ranlib_default="${cross_prefix}${ranlib_default}"
4332 fi
4333 strip_default="${cross_prefix}${strip_default}"
4334 windres_default="${cross_prefix}${windres_default}"
4335
4336 sysinclude_default="${sysroot}/usr/include"
4337
4338 if enabled cuda_sdk; then
4339     warn "Option --enable-cuda-sdk is deprecated. Use --enable-cuda-nvcc instead."
4340     enable cuda_nvcc
4341 fi
4342
4343 if enabled cuda_nvcc; then
4344     nvcc_default="nvcc"
4345     nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
4346 else
4347     nvcc_default="clang"
4348     nvccflags_default="--cuda-gpu-arch=sm_30 -O2"
4349     NVCC_C=""
4350 fi
4351
4352 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
4353     target_exec x86asmexe nvcc
4354 enabled cross_compile || host_cc_default=$cc
4355 set_default host_cc
4356
4357 pkg_config_fail_message=""
4358 if ! $pkg_config --version >/dev/null 2>&1; then
4359     warn "$pkg_config not found, library detection may fail."
4360     pkg_config=false
4361 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
4362     pkg_config_fail_message="
4363 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
4364 fi
4365
4366 if test $doxygen != $doxygen_default && \
4367   ! $doxygen --version >/dev/null 2>&1; then
4368     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
4369 fi
4370
4371 exesuf() {
4372     case $1 in
4373         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
4374     esac
4375 }
4376
4377 EXESUF=$(exesuf $target_os)
4378 HOSTEXESUF=$(exesuf $host_os)
4379
4380 # set temporary file name
4381 : ${TMPDIR:=$TEMPDIR}
4382 : ${TMPDIR:=$TMP}
4383 : ${TMPDIR:=/tmp}
4384
4385 if [ -n "$tempprefix" ] ; then
4386     mktemp(){
4387         tmpname="$tempprefix.${HOSTNAME}.${UID}"
4388         echo "$tmpname"
4389         mkdir "$tmpname"
4390     }
4391 elif ! test_cmd mktemp -u XXXXXX; then
4392     # simple replacement for missing mktemp
4393     # NOT SAFE FOR GENERAL USE
4394     mktemp(){
4395         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
4396         echo "$tmpname"
4397         mkdir "$tmpname"
4398     }
4399 fi
4400
4401 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
4402     die "Unable to create temporary directory in $TMPDIR."
4403
4404 tmpfile(){
4405     tmp="${FFTMPDIR}/test"$2
4406     (set -C; exec > $tmp) 2> /dev/null ||
4407         die "Unable to create temporary file in $FFTMPDIR."
4408     eval $1=$tmp
4409 }
4410
4411 trap 'rm -rf -- "$FFTMPDIR"' EXIT
4412 trap 'exit 2' INT
4413
4414 tmpfile TMPASM .asm
4415 tmpfile TMPC   .c
4416 tmpfile TMPCPP .cpp
4417 tmpfile TMPE   $EXESUF
4418 tmpfile TMPH   .h
4419 tmpfile TMPM   .m
4420 tmpfile TMPCU  .cu
4421 tmpfile TMPO   .o
4422 tmpfile TMPS   .S
4423 tmpfile TMPSH  .sh
4424 tmpfile TMPV   .ver
4425
4426 unset -f mktemp
4427
4428 chmod +x $TMPE
4429
4430 # make sure we can execute files in $TMPDIR
4431 cat > $TMPSH 2>> $logfile <<EOF
4432 #! /bin/sh
4433 EOF
4434 chmod +x $TMPSH >> $logfile 2>&1
4435 if ! $TMPSH >> $logfile 2>&1; then
4436     cat <<EOF
4437 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
4438 variable to another directory and make sure that it is not mounted noexec.
4439 EOF
4440     die "Sanity test failed."
4441 fi
4442
4443 armasm_flags(){
4444     for flag; do
4445         case $flag in
4446             # Filter out MSVC cl.exe options from cflags that shouldn't
4447             # be passed to gas-preprocessor
4448             -M[TD]*)                                            ;;
4449             *)                  echo $flag                      ;;
4450         esac
4451    done
4452 }
4453
4454 cparser_flags(){
4455     for flag; do
4456         case $flag in
4457             -Wno-switch)             echo -Wno-switch-enum ;;
4458             -Wno-format-zero-length) ;;
4459             -Wdisabled-optimization) ;;
4460             -Wno-pointer-sign)       echo -Wno-other ;;
4461             *)                       echo $flag ;;
4462         esac
4463     done
4464 }
4465
4466 msvc_common_flags(){
4467     for flag; do
4468         case $flag in
4469             # In addition to specifying certain flags under the compiler
4470             # specific filters, they must be specified here as well or else the
4471             # generic catch all at the bottom will print the original flag.
4472             -Wall)                ;;
4473             -Wextra)              ;;
4474             -std=c*)              ;;
4475             # Common flags
4476             -fomit-frame-pointer) ;;
4477             -g)                   echo -Z7 ;;
4478             -fno-math-errno)      ;;
4479             -fno-common)          ;;
4480             -fno-signed-zeros)    ;;
4481             -fPIC)                ;;
4482             -mthumb)              ;;
4483             -march=*)             ;;
4484             -lz)                  echo zlib.lib ;;
4485             -lx264)               echo libx264.lib ;;
4486             -lstdc++)             ;;
4487             -l*)                  echo ${flag#-l}.lib ;;
4488             -LARGEADDRESSAWARE)   echo $flag ;;
4489             -L*)                  echo -libpath:${flag#-L} ;;
4490             -Wl,*)                ;;
4491             *)                    echo $flag ;;
4492         esac
4493     done
4494 }
4495
4496 msvc_flags(){
4497     msvc_common_flags "$@"
4498     for flag; do
4499         case $flag in
4500             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4501                                        -wd4554 ;;
4502             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4503                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4504                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4505                                        -wd4307 \
4506                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4507         esac
4508     done
4509 }
4510
4511 icl_flags(){
4512     msvc_common_flags "$@"
4513     for flag; do
4514         case $flag in
4515             # Despite what Intel's documentation says -Wall, which is supported
4516             # on Windows, does enable remarks so disable them here.
4517             -Wall)                echo $flag -Qdiag-disable:remark ;;
4518             -std=c99)             echo -Qstd=c99 ;;
4519             -flto)                echo -ipo ;;
4520         esac
4521     done
4522 }
4523
4524 icc_flags(){
4525     for flag; do
4526         case $flag in
4527             -flto)                echo -ipo ;;
4528             *)                    echo $flag ;;
4529         esac
4530     done
4531 }
4532
4533 suncc_flags(){
4534     for flag; do
4535         case $flag in
4536             -march=*|-mcpu=*)
4537                 case "${flag#*=}" in
4538                     native)                   echo -xtarget=native       ;;
4539                     v9|niagara)               echo -xarch=sparc          ;;
4540                     ultrasparc)               echo -xarch=sparcvis       ;;
4541                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4542                     i586|pentium)             echo -xchip=pentium        ;;
4543                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4544                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4545                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4546                     pentium4*)          echo -xtarget=pentium4           ;;
4547                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4548                     *-sse3)             echo -xarch=sse3                 ;;
4549                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4550                     bonnell)                   echo -xarch=ssse3         ;;
4551                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4552                     westmere)                  echo -xtarget=westmere    ;;
4553                     silvermont)                echo -xarch=sse4_2        ;;
4554                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4555                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4556                                                echo -xarch=avx           ;;
4557                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4558                     btver1)                    echo -xarch=amdsse4a      ;;
4559                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4560                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4561                     k8|opteron|athlon64|athlon-fx)
4562                                                echo -xarch=sse2a         ;;
4563                     athlon*)                   echo -xarch=pentium_proa  ;;
4564                 esac
4565                 ;;
4566             -std=c99)             echo -xc99              ;;
4567             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4568             -fPIC)                echo -KPIC -xcode=pic32 ;;
4569             -W*,*)                echo $flag              ;;
4570             -f*-*|-W*|-mimpure-text)                      ;;
4571             -shared)              echo -G                 ;;
4572             *)                    echo $flag              ;;
4573         esac
4574     done
4575 }
4576
4577 probe_cc(){
4578     pfx=$1
4579     _cc=$2
4580     first=$3
4581
4582     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4583     unset _ld_o _ldflags _ld_lib _ld_path
4584     unset _depflags _DEPCMD _DEPFLAGS
4585     _flags_filter=echo
4586
4587     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4588         true # no-op to avoid reading stdin in following checks
4589     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4590         _type=llvm_gcc
4591         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4592         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4593         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4594         _cflags_speed='-O3'
4595         _cflags_size='-Os'
4596     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4597         _type=gcc
4598         gcc_version=$($_cc --version | head -n1)
4599         gcc_basever=$($_cc -dumpversion)
4600         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4601         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4602         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4603         case $gcc_basever in
4604             2) ;;
4605             2.*) ;;
4606             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4607         esac
4608         if [ "$first" = true ]; then
4609             case $gcc_basever in
4610                 4.2*)
4611                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4612             esac
4613         fi
4614         _cflags_speed='-O3'
4615         _cflags_size='-Os'
4616     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4617         _type=icc
4618         _ident=$($_cc --version | head -n1)
4619         _depflags='-MMD'
4620         _cflags_speed='-O3'
4621         _cflags_size='-Os'
4622         _cflags_noopt='-O1'
4623         _flags_filter=icc_flags
4624     elif $_cc -v 2>&1 | grep -q xlc; then
4625         _type=xlc
4626         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4627         _cflags_speed='-O5'
4628         _cflags_size='-O5 -qcompact'
4629     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4630         test -d "$sysroot" || die "No valid sysroot specified."
4631         _type=armcc
4632         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4633         armcc_conf="$PWD/armcc.conf"
4634         $_cc --arm_linux_configure                 \
4635              --arm_linux_config_file="$armcc_conf" \
4636              --configure_sysroot="$sysroot"        \
4637              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4638              die "Error creating armcc configuration file."
4639         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4640         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4641         as_default="${cross_prefix}gcc"
4642         _depflags='-MMD'
4643         _cflags_speed='-O3'
4644         _cflags_size='-Os'
4645     elif $_cc -v 2>&1 | grep -q clang && ! $_cc -? > /dev/null 2>&1; then
4646         _type=clang
4647         _ident=$($_cc --version 2>/dev/null | head -n1)
4648         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4649         _cflags_speed='-O3'
4650         _cflags_size='-Oz'
4651     elif $_cc -V 2>&1 | grep -q Sun; then
4652         _type=suncc
4653         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4654         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4655         _DEPFLAGS='-xM1 -xc99'
4656         _ldflags='-std=c99'
4657         _cflags_speed='-O5'
4658         _cflags_size='-O5 -xspace'
4659         _flags_filter=suncc_flags
4660     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4661         _type=pathscale
4662         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4663         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4664         _cflags_speed='-O2'
4665         _cflags_size='-Os'
4666         _flags_filter='filter_out -Wdisabled-optimization'
4667     elif $_cc -v 2>&1 | grep -q Open64; then
4668         _type=open64
4669         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4670         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4671         _cflags_speed='-O2'
4672         _cflags_size='-Os'
4673         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4674     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4675         _type=armasm
4676         _ident=$($_cc | head -n1)
4677         # 4509: "This form of conditional instruction is deprecated"
4678         _flags="-nologo -ignore 4509"
4679         _flags_filter=armasm_flags
4680     elif $_cc 2>&1 | grep -q Intel; then
4681         _type=icl
4682         _ident=$($_cc 2>&1 | head -n1)
4683         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4684         # Not only is O3 broken on 13.x+ but it is slower on all previous
4685         # versions (tested) as well.
4686         _cflags_speed="-O2"
4687         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4688         if $_cc 2>&1 | grep -q Linker; then
4689             _ld_o='-out:$@'
4690         else
4691             _ld_o='-Fe$@'
4692         fi
4693         _cc_o='-Fo$@'
4694         _cc_e='-P'
4695         _flags_filter=icl_flags
4696         _ld_lib='lib%.a'
4697         _ld_path='-libpath:'
4698         # -Qdiag-error to make icl error when seeing certain unknown arguments
4699         _flags='-nologo -Qdiag-error:4044,10157'
4700         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4701         # with MSVC which enables it by default.
4702         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4703         disable stripping
4704     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4705         # lld can emulate multiple different linkers; in ms link.exe mode,
4706         # the -? parameter gives the help output which contains an identifyable
4707         # string, while it gives an error in other modes.
4708         _type=lld-link
4709         # The link.exe mode doesn't have a switch for getting the version,
4710         # but we can force it back to gnu mode and get the version from there.
4711         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4712         _ld_o='-out:$@'
4713         _flags_filter=msvc_flags
4714         _ld_lib='lib%.a'
4715         _ld_path='-libpath:'
4716     elif $_cc -nologo- 2>&1 | grep -q Microsoft || { $_cc -v 2>&1 | grep -q clang && $_cc -? > /dev/null 2>&1; }; then
4717         _type=msvc
4718         if $_cc -nologo- 2>&1 | grep -q Microsoft; then
4719             _ident=$($_cc 2>&1 | head -n1 | tr -d '\r')
4720         else
4721             _ident=$($_cc --version 2>/dev/null | head -n1 | tr -d '\r')
4722         fi
4723         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4724         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4725         _cflags_speed="-O2"
4726         _cflags_size="-O1"
4727         _cflags_noopt="-O1"
4728         if $_cc -nologo- 2>&1 | grep -q Linker; then
4729             _ld_o='-out:$@'
4730         else
4731             _ld_o='-Fe$@'
4732         fi
4733         _cc_o='-Fo$@'
4734         _cc_e='-P -Fi$@'
4735         _flags_filter=msvc_flags
4736         _ld_lib='lib%.a'
4737         _ld_path='-libpath:'
4738         _flags='-nologo'
4739         disable stripping
4740     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4741         _type=cparser
4742         _ident=$($_cc --version | head -n1)
4743         _depflags='-MMD'
4744         _cflags_speed='-O4'
4745         _cflags_size='-O2'
4746         _flags_filter=cparser_flags
4747     fi
4748
4749     eval ${pfx}_type=\$_type
4750     eval ${pfx}_ident=\$_ident
4751 }
4752
4753 set_ccvars(){
4754     eval ${1}_C=\${_cc_c-\${${1}_C}}
4755     eval ${1}_E=\${_cc_e-\${${1}_E}}
4756     eval ${1}_O=\${_cc_o-\${${1}_O}}
4757
4758     if [ -n "$_depflags" ]; then
4759         eval ${1}_DEPFLAGS=\$_depflags
4760     else
4761         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4762         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4763         eval DEP${1}FLAGS=\$_flags
4764     fi
4765 }
4766
4767 probe_cc cc "$cc" "true"
4768 cflags_filter=$_flags_filter
4769 cflags_speed=$_cflags_speed
4770 cflags_size=$_cflags_size
4771 cflags_noopt=$_cflags_noopt
4772 add_cflags $_flags $_cflags
4773 cc_ldflags=$_ldflags
4774 set_ccvars CC
4775 set_ccvars CXX
4776
4777 probe_cc hostcc "$host_cc"
4778 host_cflags_filter=$_flags_filter
4779 host_cflags_speed=$_cflags_speed
4780 add_host_cflags  $_flags $_cflags
4781 set_ccvars HOSTCC
4782
4783 test -n "$cc_type" && enable $cc_type ||
4784     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4785
4786 : ${as_default:=$cc}
4787 : ${objcc_default:=$cc}
4788 : ${dep_cc_default:=$cc}
4789 : ${ld_default:=$cc}
4790 : ${host_ld_default:=$host_cc}
4791 set_default ar as objcc dep_cc ld ln_s host_ld windres
4792
4793 probe_cc as "$as"
4794 asflags_filter=$_flags_filter
4795 add_asflags $_flags $_cflags
4796 set_ccvars AS
4797
4798 probe_cc objcc "$objcc"
4799 objcflags_filter=$_flags_filter
4800 add_objcflags $_flags $_cflags
4801 set_ccvars OBJC
4802
4803 probe_cc ld "$ld"
4804 ldflags_filter=$_flags_filter
4805 add_ldflags $_flags $_ldflags
4806 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4807 LD_O=${_ld_o-$LD_O}
4808 LD_LIB=${_ld_lib-$LD_LIB}
4809 LD_PATH=${_ld_path-$LD_PATH}
4810
4811 probe_cc hostld "$host_ld"
4812 host_ldflags_filter=$_flags_filter
4813 add_host_ldflags $_flags $_ldflags
4814 HOSTLD_O=${_ld_o-$HOSTLD_O}
4815
4816 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4817     probe_cc depcc "$dep_cc"
4818     CCDEP=${_DEPCMD:-$DEPCMD}
4819     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4820     DEPCCFLAGS=$_flags
4821 fi
4822
4823 if $ar 2>&1 | grep -q Microsoft; then
4824     arflags="-nologo"
4825     ar_o='-out:$@'
4826 elif $ar 2>&1 | grep -q "\[D\] "; then
4827     arflags="rcD"
4828     ar_o='$@'
4829 else
4830     arflags="rc"
4831     ar_o='$@'
4832 fi
4833
4834 add_cflags $extra_cflags
4835 add_cxxflags $extra_cxxflags
4836 add_objcflags $extra_objcflags
4837 add_asflags $extra_cflags
4838
4839 if test -n "$sysroot"; then
4840     case "$cc_type" in
4841         gcc|llvm_gcc|clang)
4842             add_cppflags --sysroot="$sysroot"
4843             add_ldflags --sysroot="$sysroot"
4844         ;;
4845     esac
4846 fi
4847
4848 if test "$cpu" = host; then
4849     enabled cross_compile &&
4850         warn "--cpu=host makes no sense when cross-compiling."
4851
4852     case "$cc_type" in
4853         gcc|llvm_gcc)
4854             check_native(){
4855                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4856                 sed -n "/cc1.*$1=/{
4857                             s/.*$1=\\([^ ]*\\).*/\\1/
4858                             p
4859                             q
4860                         }" $TMPE
4861             }
4862             cpu=$(check_native -march || check_native -mcpu)
4863         ;;
4864         clang)
4865             check_native(){
4866                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4867                 sed -n "/cc1.*-target-cpu /{
4868                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4869                             p
4870                             q
4871                         }" $TMPE
4872             }
4873             cpu=$(check_native -march)
4874         ;;
4875     esac
4876
4877     test "${cpu:-host}" = host &&
4878         die "--cpu=host not supported with compiler $cc"
4879 fi
4880
4881 # Deal with common $arch aliases
4882 case "$arch" in
4883     aarch64|arm64)
4884         arch="aarch64"
4885     ;;
4886     arm*|iPad*|iPhone*)
4887         arch="arm"
4888     ;;
4889     mips*|IP*)
4890         case "$arch" in
4891         *el)
4892             add_cppflags -EL
4893             add_ldflags -EL
4894         ;;
4895         *eb)
4896             add_cppflags -EB
4897             add_ldflags -EB
4898         ;;
4899         esac
4900         arch="mips"
4901     ;;
4902     parisc*|hppa*)
4903         arch="parisc"
4904     ;;
4905     "Power Macintosh"|ppc*|powerpc*)
4906         arch="ppc"
4907     ;;
4908     s390|s390x)
4909         arch="s390"
4910     ;;
4911     sh4|sh)
4912         arch="sh4"
4913     ;;
4914     sun4*|sparc*)
4915         arch="sparc"
4916     ;;
4917     tilegx|tile-gx)
4918         arch="tilegx"
4919     ;;
4920     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4921         arch="x86"
4922     ;;
4923 esac
4924
4925 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4926 enable $arch
4927
4928 # Add processor-specific flags
4929 if enabled aarch64; then
4930
4931     case $cpu in
4932         armv*)
4933             cpuflags="-march=$cpu"
4934         ;;
4935         *)
4936             cpuflags="-mcpu=$cpu"
4937         ;;
4938     esac
4939
4940 elif enabled alpha; then
4941
4942     cpuflags="-mcpu=$cpu"
4943
4944 elif enabled arm; then
4945
4946     check_arm_arch() {
4947         test_cpp_condition stddef.h \
4948             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4949             $cpuflags
4950     }
4951
4952     probe_arm_arch() {
4953         if   check_arm_arch 4;        then echo armv4
4954         elif check_arm_arch 4T;       then echo armv4t
4955         elif check_arm_arch 5;        then echo armv5
4956         elif check_arm_arch 5E;       then echo armv5e
4957         elif check_arm_arch 5T;       then echo armv5t
4958         elif check_arm_arch 5TE;      then echo armv5te
4959         elif check_arm_arch 5TEJ;     then echo armv5te
4960         elif check_arm_arch 6;        then echo armv6
4961         elif check_arm_arch 6J;       then echo armv6j
4962         elif check_arm_arch 6K;       then echo armv6k
4963         elif check_arm_arch 6Z;       then echo armv6z
4964         elif check_arm_arch 6KZ;      then echo armv6zk
4965         elif check_arm_arch 6ZK;      then echo armv6zk
4966         elif check_arm_arch 6T2;      then echo armv6t2
4967         elif check_arm_arch 7;        then echo armv7
4968         elif check_arm_arch 7A  7_A;  then echo armv7-a
4969         elif check_arm_arch 7S;       then echo armv7-a
4970         elif check_arm_arch 7R  7_R;  then echo armv7-r
4971         elif check_arm_arch 7M  7_M;  then echo armv7-m
4972         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4973         elif check_arm_arch 8A  8_A;  then echo armv8-a
4974         fi
4975     }
4976
4977     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4978
4979     case $cpu in
4980         armv*)
4981             cpuflags="-march=$cpu"
4982             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4983         ;;
4984         *)
4985             cpuflags="-mcpu=$cpu"
4986             case $cpu in
4987                 cortex-a*)                               subarch=armv7a  ;;
4988                 cortex-r*)                               subarch=armv7r  ;;
4989                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4990                 arm11*)                                  subarch=armv6   ;;
4991                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4992                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4993                 *)                             subarch=$(probe_arm_arch) ;;
4994             esac
4995         ;;
4996     esac
4997
4998     case "$subarch" in
4999         armv5t*)    enable fast_clz                ;;
5000         armv[6-8]*)
5001             enable fast_clz
5002             disabled fast_unaligned || enable fast_unaligned
5003             ;;
5004     esac
5005
5006 elif enabled avr32; then
5007
5008     case $cpu in
5009         ap7[02]0[0-2])
5010             subarch="avr32_ap"
5011             cpuflags="-mpart=$cpu"
5012         ;;
5013         ap)
5014             subarch="avr32_ap"
5015             cpuflags="-march=$cpu"
5016         ;;
5017         uc3[ab]*)
5018             subarch="avr32_uc"
5019             cpuflags="-mcpu=$cpu"
5020         ;;
5021         uc)
5022             subarch="avr32_uc"
5023             cpuflags="-march=$cpu"
5024         ;;
5025     esac
5026
5027 elif enabled bfin; then
5028
5029     cpuflags="-mcpu=$cpu"
5030
5031 elif enabled mips; then
5032
5033     if [ "$cpu" != "generic" ]; then
5034         disable mips32r2
5035         disable mips32r5
5036         disable mips64r2
5037         disable mips32r6
5038         disable mips64r6
5039         disable loongson2
5040         disable loongson3
5041         disable mipsdsp
5042         disable mipsdspr2
5043
5044         cpuflags="-march=$cpu"
5045
5046         case $cpu in
5047             # General ISA levels
5048             mips1|mips3)
5049             ;;
5050             mips32r2)
5051                 enable mips32r2
5052             ;;
5053             mips32r5)
5054                 enable mips32r2
5055                 enable mips32r5
5056             ;;
5057             mips64r2|mips64r5)
5058                 enable mips64r2
5059                 enable loongson3
5060             ;;
5061             # Cores from MIPS(MTI)
5062             24kc)
5063                 disable mipsfpu
5064                 enable mips32r2
5065             ;;
5066             24kf*|24kec|34kc|74Kc|1004kc)
5067                 enable mips32r2
5068             ;;
5069             24kef*|34kf*|1004kf*)
5070                 enable mipsdsp
5071                 enable mips32r2
5072             ;;
5073             p5600)
5074                 enable mips32r2
5075                 enable mips32r5
5076                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
5077             ;;
5078             i6400)
5079                 enable mips64r6
5080                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
5081             ;;
5082             p6600)
5083                 enable mips64r6
5084                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
5085             ;;
5086             # Cores from Loongson
5087             loongson2e|loongson2f|loongson3*)
5088                 enable local_aligned
5089                 enable simd_align_16
5090                 enable fast_64bit
5091                 enable fast_clz
5092                 enable fast_cmov
5093                 enable fast_unaligned
5094                 disable aligned_stack
5095                 # When gcc version less than 5.3.0, add -fno-expensive-optimizations flag.
5096                 if test "$cc_type" = "gcc"; then
5097                     case $gcc_basever in
5098                         2|2.*|3.*|4.*|5.0|5.1|5.2)
5099                         expensive_optimization_flag="-fno-expensive-optimizations"
5100                         ;;
5101                         *)
5102                         expensive_optimization_flag=""
5103                         ;;
5104                     esac
5105                 fi
5106
5107                 case $cpu in
5108                     loongson3*)
5109                         enable loongson3
5110                         cpuflags="-march=loongson3a -mhard-float $expensive_optimization_flag"
5111                     ;;
5112                     loongson2e)
5113                         enable loongson2
5114                         cpuflags="-march=loongson2e -mhard-float $expensive_optimization_flag"
5115                     ;;
5116                     loongson2f)
5117                         enable loongson2
5118                         cpuflags="-march=loongson2f -mhard-float $expensive_optimization_flag"
5119                     ;;
5120                 esac
5121             ;;
5122             *)
5123                 warn "unknown MIPS CPU"
5124             ;;
5125         esac
5126
5127     else
5128         disable mipsdsp
5129         disable mipsdspr2
5130         # Disable DSP stuff for generic CPU, it can't be detected at runtime.
5131         warn 'generic cpu selected'
5132     fi
5133
5134 elif enabled ppc; then
5135
5136     disable ldbrx
5137
5138     case $(tolower $cpu) in
5139         601|ppc601|powerpc601)
5140             cpuflags="-mcpu=601"
5141             disable altivec
5142         ;;
5143         603*|ppc603*|powerpc603*)
5144             cpuflags="-mcpu=603"
5145             disable altivec
5146         ;;
5147         604*|ppc604*|powerpc604*)
5148             cpuflags="-mcpu=604"
5149             disable altivec
5150         ;;
5151         g3|75*|ppc75*|powerpc75*)
5152             cpuflags="-mcpu=750"
5153             disable altivec
5154         ;;
5155         g4|745*|ppc745*|powerpc745*)
5156             cpuflags="-mcpu=7450"
5157             disable vsx
5158         ;;
5159         74*|ppc74*|powerpc74*)
5160             cpuflags="-mcpu=7400"
5161             disable vsx
5162         ;;
5163         g5|970|ppc970|powerpc970)
5164             cpuflags="-mcpu=970"
5165             disable vsx
5166         ;;
5167         power[3-6]*)
5168             cpuflags="-mcpu=$cpu"
5169             disable vsx
5170         ;;
5171         power[7-8]*)
5172             cpuflags="-mcpu=$cpu"
5173         ;;
5174         cell)
5175             cpuflags="-mcpu=cell"
5176             enable ldbrx
5177             disable vsx
5178         ;;
5179         e500mc)
5180             cpuflags="-mcpu=e500mc"
5181             disable altivec
5182         ;;
5183         e500v2)
5184             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
5185             disable altivec
5186             disable dcbzl
5187         ;;
5188         e500)
5189             cpuflags="-mcpu=8540 -mhard-float"
5190             disable altivec
5191             disable dcbzl
5192         ;;
5193     esac
5194
5195 elif enabled sparc; then
5196
5197     case $cpu in
5198         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
5199             cpuflags="-mcpu=$cpu"
5200         ;;
5201         ultrasparc*|niagara[234])
5202             cpuflags="-mcpu=$cpu"
5203         ;;
5204     esac
5205
5206 elif enabled x86; then
5207
5208     case $cpu in
5209         i[345]86|pentium)
5210             cpuflags="-march=$cpu"
5211             disable i686
5212             disable mmx
5213         ;;
5214         # targets that do NOT support nopl and conditional mov (cmov)
5215         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
5216             cpuflags="-march=$cpu"
5217             disable i686
5218         ;;
5219         # targets that do support nopl and conditional mov (cmov)
5220         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
5221         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
5222         |amdfam10|barcelona|b[dt]ver*|znver*)
5223             cpuflags="-march=$cpu"
5224             enable i686
5225             enable fast_cmov
5226         ;;
5227         # targets that do support conditional mov but on which it's slow
5228         pentium4|pentium4m|prescott|nocona)
5229             cpuflags="-march=$cpu"
5230             enable i686
5231             disable fast_cmov
5232         ;;
5233     esac
5234
5235 fi
5236
5237 if [ "$cpu" != generic ]; then
5238     add_cflags  $cpuflags
5239     add_asflags $cpuflags
5240     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
5241 fi
5242
5243 # compiler sanity check
5244 test_exec <<EOF
5245 int main(void){ return 0; }
5246 EOF
5247 if test "$?" != 0; then
5248     echo "$cc is unable to create an executable file."
5249     if test -z "$cross_prefix" && ! enabled cross_compile ; then
5250         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
5251         echo "Only do this if you know what cross compiling means."
5252     fi
5253     die "C compiler test failed."
5254 fi
5255
5256 add_cppflags -D_ISOC99_SOURCE
5257 add_cxxflags -D__STDC_CONSTANT_MACROS
5258 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
5259
5260 # some compilers silently accept -std=c11, so we also need to check that the
5261 # version macro is defined properly
5262 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
5263     add_cflags -std=c11 ||
5264     check_cflags -std=c99
5265
5266 check_cppflags -D_FILE_OFFSET_BITS=64
5267 check_cppflags -D_LARGEFILE_SOURCE
5268
5269 add_host_cppflags -D_ISOC99_SOURCE
5270 check_host_cflags -std=c99
5271 check_host_cflags -Wall
5272 check_host_cflags $host_cflags_speed
5273
5274 check_64bit(){
5275     arch32=$1
5276     arch64=$2
5277     expr=${3:-'sizeof(void *) > 4'}
5278     test_code cc "" "int test[2*($expr) - 1]" &&
5279         subarch=$arch64 || subarch=$arch32
5280     enable $subarch
5281 }
5282
5283 case "$arch" in
5284     aarch64|alpha|ia64)
5285         enabled shared && enable_weak pic
5286     ;;
5287     mips)
5288         check_64bit mips mips64 '_MIPS_SIM > 1'
5289         enabled shared && enable_weak pic
5290     ;;
5291     parisc)
5292         check_64bit parisc parisc64
5293         enabled shared && enable_weak pic
5294     ;;
5295     ppc)
5296         check_64bit ppc ppc64
5297         enabled shared && enable_weak pic
5298     ;;
5299     s390)
5300         check_64bit s390 s390x
5301         enabled shared && enable_weak pic
5302     ;;
5303     sparc)
5304         check_64bit sparc sparc64
5305         enabled shared && enable_weak pic
5306     ;;
5307     x86)
5308         check_64bit x86_32 x86_64
5309         # Treat x32 as x64 for now. Note it also needs pic if shared
5310         test "$subarch" = "x86_32" && test_cpp_condition stddef.h 'defined(__x86_64__)' &&
5311             subarch=x86_64 && enable x86_64 && disable x86_32
5312         if enabled x86_64; then
5313             enabled shared && enable_weak pic
5314             objformat=elf64
5315         fi
5316     ;;
5317 esac
5318
5319 # OS specific
5320 case $target_os in
5321     aix)
5322         SHFLAGS=-shared
5323         add_cppflags '-I\$(SRC_PATH)/compat/aix'
5324         enabled shared && add_ldflags -Wl,-brtl
5325         arflags='-Xany -r -c'
5326         striptype=""
5327         ;;
5328     android)
5329         disable symver
5330         enable section_data_rel_ro
5331         add_cflags -fPIE
5332         add_ldexeflags -fPIE -pie
5333         SLIB_INSTALL_NAME='$(SLIBNAME)'
5334         SLIB_INSTALL_LINKS=
5335         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
5336         ;;
5337     haiku)
5338         prefix_default="/boot/common"
5339         network_extralibs="-lnetwork"
5340         host_extralibs=
5341         ;;
5342     sunos)
5343         SHFLAGS='-shared -Wl,-h,$$(@F)'
5344         enabled x86 && append SHFLAGS -mimpure-text
5345         network_extralibs="-lsocket -lnsl"
5346         add_cppflags -D__EXTENSIONS__
5347         # When using suncc to build, the Solaris linker will mark
5348         # an executable with each instruction set encountered by
5349         # the Solaris assembler.  As our libraries contain their own
5350         # guards for processor-specific code, instead suppress
5351         # generation of the HWCAPS ELF section on Solaris x86 only.
5352         enabled_all suncc x86 &&
5353             echo "hwcap_1 = OVERRIDE;" > mapfile &&
5354             add_ldflags -Wl,-M,mapfile
5355         nm_default='nm -P -g'
5356         striptype=""
5357         version_script='-M'
5358         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
5359         ;;
5360     netbsd)
5361         disable symver
5362         oss_indev_extralibs="-lossaudio"
5363         oss_outdev_extralibs="-lossaudio"
5364         enabled gcc || check_ldflags -Wl,-zmuldefs
5365         ;;
5366     openbsd|bitrig)
5367         disable symver
5368         enable section_data_rel_ro
5369         striptype=""
5370         SHFLAGS='-shared'
5371         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
5372         SLIB_INSTALL_LINKS=
5373         oss_indev_extralibs="-lossaudio"
5374         oss_outdev_extralibs="-lossaudio"
5375         ;;
5376     dragonfly)
5377         disable symver
5378         ;;
5379     freebsd)
5380         ;;
5381     bsd/os)
5382         add_extralibs -lpoll -lgnugetopt
5383         strip="strip -d"
5384         ;;
5385     darwin)
5386         enabled ppc && add_asflags -force_cpusubtype_ALL
5387         install_name_dir_default='$(SHLIBDIR)'
5388         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
5389         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
5390         strip="${strip} -x"
5391         add_ldflags -Wl,-dynamic,-search_paths_first
5392         check_cflags -Werror=partial-availability
5393         SLIBSUF=".dylib"
5394         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
5395         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
5396         enabled x86_64 && objformat="macho64" || objformat="macho32"
5397         enabled_any pic shared x86_64 ||
5398             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
5399         check_headers dispatch/dispatch.h &&
5400             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
5401         if test -n "$sysroot"; then
5402             is_in -isysroot $cc $CPPFLAGS $CFLAGS || check_cppflags -isysroot $sysroot
5403             is_in -isysroot $ld $LDFLAGS          || check_ldflags  -isysroot $sysroot
5404         fi
5405         version_script='-exported_symbols_list'
5406         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
5407         # Workaround for Xcode 11 -fstack-check bug
5408         if enabled clang; then
5409             clang_version=$($cc -dumpversion)
5410             test ${clang_version%%.*} -eq 11 && add_cflags -fno-stack-check
5411         fi
5412         ;;
5413     msys*)
5414         die "Native MSYS builds are discouraged, please use the MINGW environment."
5415         ;;
5416     mingw32*|mingw64*)
5417         target_os=mingw32
5418         LIBTARGET=i386
5419         if enabled x86_64; then
5420             LIBTARGET="i386:x86-64"
5421         elif enabled arm; then
5422             LIBTARGET="arm"
5423         elif enabled aarch64; then
5424             LIBTARGET="arm64"
5425         fi
5426         if enabled shared; then
5427             # Cannot build both shared and static libs when using dllimport.
5428             disable static
5429         fi
5430         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5431         enabled x86_32 && check_ldflags -Wl,--large-address-aware
5432         shlibdir_default="$bindir_default"
5433         SLIBPREF=""
5434         SLIBSUF=".dll"
5435         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5436         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5437         if test_cmd lib.exe -list; then
5438             SLIB_EXTRA_CMD=-'lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5439             if enabled x86_64; then
5440                 LIBTARGET=x64
5441             fi
5442         else
5443             SLIB_EXTRA_CMD=-'$(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
5444         fi
5445         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5446         SLIB_INSTALL_LINKS=
5447         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5448         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5449         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" AR="$(AR_CMD)" NM="$(NM_CMD)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5450         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--disable-auto-image-base $$(@:$(SLIBSUF)=.def)'
5451         enabled x86_64 && objformat="win64" || objformat="win32"
5452         dlltool="${cross_prefix}dlltool"
5453         ranlib=:
5454         enable dos_paths
5455         check_ldflags -Wl,--nxcompat,--dynamicbase
5456         # Lets work around some stupidity in binutils.
5457         # ld will strip relocations from executables even though we need them
5458         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
5459         # however ld then forgets what the entry point should be (oops) so we
5460         # have to manually (re)set it.
5461         if enabled x86_32; then
5462             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
5463         elif enabled x86_64; then
5464             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
5465             check_ldflags -Wl,--high-entropy-va # binutils 2.25
5466             # Set image base >4GB for extra entropy with HEASLR
5467             add_ldexeflags -Wl,--image-base,0x140000000
5468             append SHFLAGS -Wl,--image-base,0x180000000
5469         fi
5470         ;;
5471     win32|win64)
5472         disable symver
5473         if enabled shared; then
5474             # Link to the import library instead of the normal static library
5475             # for shared libs.
5476             LD_LIB='%.lib'
5477             # Cannot build both shared and static libs with MSVC or icl.
5478             disable static
5479         fi
5480         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
5481         shlibdir_default="$bindir_default"
5482         SLIBPREF=""
5483         SLIBSUF=".dll"
5484         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5485         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5486         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5487         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5488         SLIB_INSTALL_LINKS=
5489         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5490         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5491         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5492         enabled x86_64 && objformat="win64" || objformat="win32"
5493         ranlib=:
5494         enable dos_paths
5495         ;;
5496     cygwin*)
5497         target_os=cygwin
5498         shlibdir_default="$bindir_default"
5499         SLIBPREF="cyg"
5500         SLIBSUF=".dll"
5501         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5502         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5503         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5504         SLIB_INSTALL_LINKS=
5505         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
5506         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
5507         enabled x86_64 && objformat="win64" || objformat="win32"
5508         enable dos_paths
5509         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5510         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5511         ;;
5512     *-dos|freedos|opendos)
5513         network_extralibs="-lsocket"
5514         objformat="coff"
5515         enable dos_paths
5516         ;;
5517     linux)
5518         enable section_data_rel_ro
5519         enabled_any arm aarch64 && enable_weak linux_perf
5520         ;;
5521     irix*)
5522         target_os=irix
5523         ranlib="echo ignoring ranlib"
5524         ;;
5525     os/2*)
5526         strip="lxlite -CS"
5527         striptype=""
5528         objformat="aout"
5529         add_cppflags -D_GNU_SOURCE
5530         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
5531         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
5532         LIBSUF="_s.a"
5533         SLIBPREF=""
5534         SLIBSUF=".dll"
5535         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5536         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
5537         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
5538             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
5539             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
5540             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
5541             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
5542         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
5543             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
5544         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5545         SLIB_INSTALL_LINKS=
5546         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
5547         enable dos_paths
5548         enable_weak os2threads
5549         ;;
5550     gnu/kfreebsd)
5551         add_cppflags -D_BSD_SOURCE
5552         ;;
5553     gnu)
5554         ;;
5555     qnx)
5556         add_cppflags -D_QNX_SOURCE
5557         network_extralibs="-lsocket"
5558         ;;
5559     symbian)
5560         SLIBSUF=".dll"
5561         enable dos_paths
5562         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
5563         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
5564         add_ldflags -Wl,--target1-abs,--no-undefined \
5565                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
5566                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
5567         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
5568                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
5569                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
5570         ;;
5571     minix)
5572         ;;
5573     none)
5574         ;;
5575     *)
5576         die "Unknown OS '$target_os'."
5577         ;;
5578 esac
5579
5580 # test if creating links works
5581 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5582 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5583 mkdir "$link_dest"
5584 $ln_s "$link_dest" "$link_name"
5585 touch "$link_dest/test_file"
5586 if [ "$source_path" != "." ] && [ "$source_path" != "src" ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5587     # create link to source path
5588     [ -e src ] && rm src
5589     $ln_s "$source_path" src
5590     source_link=src
5591 else
5592     # creating directory links doesn't work
5593     # fall back to using the full source path
5594     source_link="$source_path"
5595 fi
5596 # cleanup
5597 rm -r "$link_dest"
5598 rm -r "$link_name"
5599
5600 # determine libc flavour
5601
5602 probe_libc(){
5603     pfx=$1
5604     pfx_no_=${pfx%_}
5605     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5606     if test_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5607         eval ${pfx}libc_type=uclibc
5608         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5609     elif test_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5610         eval ${pfx}libc_type=glibc
5611         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5612     # MinGW headers can be installed on Cygwin, so check for newlib first.
5613     elif test_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5614         eval ${pfx}libc_type=newlib
5615         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
5616     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5617     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5618         eval ${pfx}libc_type=mingw64
5619         if test_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5620             add_compat msvcrt/snprintf.o
5621             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5622         fi
5623         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5624         eval test \$${pfx_no_}cc_type = "gcc" &&
5625             add_${pfx}cppflags -D__printf__=__gnu_printf__
5626         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5627             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5628         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5629     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5630          test_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5631         eval ${pfx}libc_type=mingw32
5632         test_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5633             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5634             die "ERROR: MinGW32 runtime version must be >= 3.15."
5635         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5636         test_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
5637             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5638         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5639             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5640         eval test \$${pfx_no_}cc_type = "gcc" &&
5641             add_${pfx}cppflags -D__printf__=__gnu_printf__
5642         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5643     elif test_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5644         eval ${pfx}libc_type=msvcrt
5645         if test_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5646             if [ "$pfx" = host_ ]; then
5647                 add_host_cppflags -Dsnprintf=_snprintf
5648             else
5649                 add_compat strtod.o strtod=avpriv_strtod
5650                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5651                                              _snprintf=avpriv_snprintf  \
5652                                              vsnprintf=avpriv_vsnprintf
5653             fi
5654         fi
5655         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5656         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5657         # 0x601 by default unless something else is set by the user.
5658         # This can easily lead to us detecting functions only present
5659         # in such new versions and producing binaries requiring windows 7.0.
5660         # Therefore explicitly set the default to Vista unless the user has
5661         # set something else on the command line.
5662         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5663         # family. For these cases, configure is free to use any functions
5664         # found in the SDK headers by default. (Alternatively, we could force
5665         # _WIN32_WINNT to 0x0602 in that case.)
5666         test_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5667             { test_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0600; }
5668 #ifdef WINAPI_FAMILY
5669 #include <winapifamily.h>
5670 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5671 #error not desktop
5672 #endif
5673 #endif
5674 EOF
5675         if [ "$pfx" = "" ]; then
5676             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5677             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5678         fi
5679     elif test_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5680         eval ${pfx}libc_type=klibc
5681     elif test_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5682         eval ${pfx}libc_type=bionic
5683     elif test_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5684         eval ${pfx}libc_type=solaris
5685         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5686     elif test_${pfx}cpp_condition sys/version.h "defined __DJGPP__"; then
5687         eval ${pfx}libc_type=djgpp
5688         add_cppflags -U__STRICT_ANSI__
5689         add_cflags "-include $source_path/compat/djgpp/math.h"
5690         add_compat djgpp/math.o
5691     fi
5692     test_${pfx}cc <<EOF
5693 #include <time.h>
5694 void *v = localtime_r;
5695 EOF
5696 test "$?" != 0 && test_${pfx}cc -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 <<EOF && add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5697 #include <time.h>
5698 void *v = localtime_r;
5699 EOF
5700
5701     eval test -n "\${${pfx}libc_type}" && enable ${pfx}libc_${libc_type}
5702 }
5703
5704 probe_libc
5705 probe_libc host_
5706
5707 # hacks for compiler/libc/os combinations
5708
5709 case $libc_type in
5710     bionic)
5711         add_compat strtod.o strtod=avpriv_strtod
5712         ;;
5713 esac
5714
5715 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5716     add_cppflags '-I\$(SRC_PATH)/compat/float'
5717
5718 test_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5719
5720 set_default libdir
5721 : ${shlibdir_default:="$libdir"}
5722 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5723
5724 set_default $PATHS_LIST
5725 set_default nm
5726
5727 disabled optimizations || enabled ossfuzz || check_cflags -fomit-frame-pointer
5728
5729 enable_weak_pic() {
5730     disabled pic && return
5731     enable pic
5732     add_cppflags -DPIC
5733     case "$target_os" in
5734     mingw*|cygwin*|win*)
5735         ;;
5736     *)
5737         add_cflags -fPIC
5738         add_asflags -fPIC
5739         ;;
5740     esac
5741 }
5742
5743 enabled pic && enable_weak_pic
5744
5745 test_cc <<EOF || die "Symbol mangling check failed."
5746 int ff_extern;
5747 EOF
5748 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5749 extern_prefix=${sym%%ff_extern*}
5750
5751 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
5752
5753 for restrict_keyword in restrict __restrict__ __restrict ""; do
5754     test_code cc "" "char * $restrict_keyword p" && break
5755 done
5756
5757 check_cc pragma_deprecated "" '_Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"")'
5758
5759 # The global variable ensures the bits appear unchanged in the object file.
5760 test_cc <<EOF || die "endian test failed"
5761 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5762 EOF
5763 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5764
5765 check_cc const_nan math.h "struct { double d; } static const bar[] = { { NAN } }"
5766
5767 if ! enabled ppc64 || enabled bigendian; then
5768     disable vsx
5769 fi
5770
5771 check_gas() {
5772     log "check_gas using '$as' as AS"
5773     # :vararg is used on aarch64, arm and ppc altivec
5774     check_as vararg "
5775 .macro m n, y:vararg=0
5776 \n: .int \y
5777 .endm
5778 m x" || return 1
5779     # .altmacro is only used in arm asm
5780     ! enabled arm || check_as gnu_as ".altmacro"
5781 }
5782
5783 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5784     nogas=:
5785     enabled_any arm aarch64 && nogas=die
5786     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5787     as_noop=-v
5788
5789     case $as_type in
5790         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5791         gcc)  gaspp_as_type=gas ;;
5792         *)    gaspp_as_type=$as_type ;;
5793     esac
5794
5795     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5796
5797     test "${as#*gas-preprocessor.pl}" != "$as" ||
5798     test_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5799         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5800
5801     if ! check_gas ; then
5802         as=${gas:=$as}
5803         check_gas || \
5804             $nogas "GNU assembler not found, install/update gas-preprocessor"
5805     fi
5806
5807     check_as as_func ".func test
5808                       .endfunc"
5809 fi
5810
5811 check_inline_asm inline_asm_labels '"1:\n"'
5812
5813 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5814
5815 if enabled aarch64; then
5816     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5817     # internal assembler in clang 3.3 does not support this instruction
5818     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5819     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5820
5821     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5822
5823 elif enabled alpha; then
5824
5825     check_cflags -mieee
5826
5827 elif enabled arm; then
5828
5829     enabled msvc && check_cpp_condition thumb stddef.h "defined _M_ARMT"
5830     test_cpp_condition stddef.h "defined __thumb__" && test_cc <<EOF && enable_weak thumb
5831 float func(float a, float b){ return a+b; }
5832 EOF
5833     enabled thumb && check_cflags -mthumb || check_cflags -marm
5834
5835     if check_cpp_condition vfp_args stddef.h "defined __ARM_PCS_VFP"; then
5836         :
5837     elif check_cpp_condition vfp_args stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5838         :
5839     elif ! test_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5840         case "${cross_prefix:-$cc}" in
5841             *hardfloat*) enable vfp_args; fpabi=vfp ;;
5842             *) check_ld "cc" vfp_args <<EOF && fpabi=vfp || fpabi=soft ;;
5843 __asm__ (".eabi_attribute 28, 1");
5844 int main(void) { return 0; }
5845 EOF
5846         esac
5847         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5848     fi
5849
5850     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5851     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5852     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5853     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5854     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5855     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5856     enabled setend  && check_insn setend  'setend be'
5857
5858     [ $target_os = linux ] || [ $target_os = android ] ||
5859         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5860             $ARCH_EXT_LIST_ARM
5861
5862     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5863
5864     check_as as_arch_directive ".arch armv7-a"
5865     check_as as_dn_directive   "ra .dn d0.i16"
5866     check_as as_fpu_directive  ".fpu neon"
5867
5868     # llvm's integrated assembler supports .object_arch from llvm 3.5
5869     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
5870         check_as as_object_arch ".object_arch armv4"
5871
5872     # MS armasm fails to assemble our PIC constructs
5873     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5874
5875 elif enabled mips; then
5876
5877     # Check toolchain ISA level
5878     if enabled mips64; then
5879         enabled mips64r6 && check_inline_asm mips64r6 '"dlsa $0, $0, $0, 1"' &&
5880             disable mips64r2
5881
5882         enabled mips64r2 && check_inline_asm mips64r2 '"dext $0, $0, 0, 1"'
5883
5884         disable mips32r6 && disable mips32r5 && disable mips32r2
5885     else
5886         enabled mips32r6 && check_inline_asm mips32r6 '"aui $0, $0, 0"' &&
5887             disable mips32r5 && disable mips32r2
5888
5889         enabled mips32r5 && check_inline_asm mips32r5 '"eretnc"'
5890         enabled mips32r2 && check_inline_asm mips32r2 '"ext $0, $0, 0, 1"'
5891
5892         disable mips64r6 && disable mips64r5 && disable mips64r2
5893     fi
5894
5895     enabled mipsfpu && check_inline_asm mipsfpu '"cvt.d.l $f0, $f2"'
5896     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5897
5898     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5899     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5900
5901     # MSA and MSA2 can be detected at runtime so we supply extra flags here
5902     enabled mipsfpu && enabled msa && check_inline_asm msa '"addvi.b $w0, $w1, 1"' '-mmsa' && append MSAFLAGS '-mmsa'
5903     enabled msa && enabled msa2 && check_inline_asm msa2 '"nxbits.any.b $w0, $w0"' '-mmsa2' && append MSAFLAGS '-mmsa2'
5904
5905     # loongson2 have no switch cflag so we can only probe toolchain ability
5906     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"' && disable loongson3
5907
5908     # loongson3 is paired with MMI
5909     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"' '-mloongson-ext' && append MMIFLAGS '-mloongson-ext'
5910
5911     # MMI can be detected at runtime too
5912     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"' '-mloongson-mmi' && append MMIFLAGS '-mloongson-mmi'
5913
5914     if enabled bigendian && enabled msa; then
5915         disable msa
5916     fi
5917
5918 elif enabled parisc; then
5919
5920     if enabled gcc; then
5921         case $($cc -dumpversion) in
5922             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5923         esac
5924     fi
5925
5926 elif enabled ppc; then
5927
5928     enable local_aligned
5929
5930     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5931     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5932     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5933     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5934
5935     if enabled altivec; then
5936         check_cflags -maltivec -mabi=altivec
5937
5938         # check if our compiler supports Motorola AltiVec C API
5939         check_cc altivec altivec.h "vector signed int v1 = (vector signed int) { 0 };
5940                                     vector signed int v2 = (vector signed int) { 1 };
5941                                     v1 = vec_add(v1, v2);"
5942
5943         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5944     fi
5945
5946     if enabled vsx; then
5947         check_cflags -mvsx &&
5948         check_cc vsx altivec.h "int v[4] = { 0 };
5949                                 vector signed int v1 = vec_vsx_ld(0, v);"
5950     fi
5951
5952     if enabled power8; then
5953         check_cpp_condition power8 "altivec.h" "defined(_ARCH_PWR8)"
5954     fi
5955
5956 elif enabled x86; then
5957
5958     check_builtin rdtsc    intrin.h   "__rdtsc()"
5959     check_builtin mm_empty mmintrin.h "_mm_empty()"
5960
5961     enable local_aligned
5962
5963     # check whether EBP is available on x86
5964     # As 'i' is stored on the stack, this program will crash
5965     # if the base pointer is used to access it because the
5966     # base pointer is cleared in the inline assembly code.
5967     check_exec_crash <<EOF && enable ebp_available
5968 volatile int i=0;
5969 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5970 return i;
5971 EOF
5972
5973     # check whether EBX is available on x86
5974     check_inline_asm ebx_available '""::"b"(0)' &&
5975         check_inline_asm ebx_available '"":::"%ebx"'
5976
5977     # check whether xmm clobbers are supported
5978     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5979
5980     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5981         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5982
5983     # check whether binutils is new enough to compile SSSE3/MMXEXT
5984     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5985     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5986
5987     probe_x86asm(){
5988         x86asmexe_probe=$1
5989         if test_cmd $x86asmexe_probe -v; then
5990             x86asmexe=$x86asmexe_probe
5991             x86asm_type=nasm
5992             x86asm_debug="-g -F dwarf"
5993             X86ASMDEP=
5994             X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
5995         elif test_cmd $x86asmexe_probe --version; then
5996             x86asmexe=$x86asmexe_probe
5997             x86asm_type=yasm
5998             x86asm_debug="-g dwarf2"
5999             X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
6000             X86ASM_DEPFLAGS=
6001         fi
6002         check_x86asm x86asm "movbe ecx, [5]"
6003     }
6004
6005     if ! disabled_any asm mmx x86asm; then
6006         disable x86asm
6007         for program in $x86asmexe nasm yasm; do
6008             probe_x86asm $program && break
6009         done
6010         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
6011         X86ASMFLAGS="-f $objformat"
6012         enabled pic               && append X86ASMFLAGS "-DPIC"
6013         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
6014         case "$objformat" in
6015             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
6016         esac
6017
6018         enabled avx512 && check_x86asm avx512_external "vmovdqa32 [eax]{k1}{z}, zmm0"
6019         enabled avx2   && check_x86asm avx2_external   "vextracti128 xmm0, ymm0, 0"
6020         enabled xop    && check_x86asm xop_external    "vpmacsdd xmm0, xmm1, xmm2, xmm3"
6021         enabled fma4   && check_x86asm fma4_external   "vfmaddps ymm0, ymm1, ymm2, ymm3"
6022         check_x86asm cpunop          "CPU amdnop"
6023     fi
6024
6025     case "$cpu" in
6026         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
6027             disable fast_clz
6028         ;;
6029     esac
6030
6031 fi
6032
6033 check_cc intrinsics_neon arm_neon.h "int16x8_t test = vdupq_n_s16(0)"
6034
6035 check_ldflags -Wl,--as-needed
6036 check_ldflags -Wl,-z,noexecstack
6037
6038 if ! disabled network; then
6039     check_func getaddrinfo $network_extralibs
6040     check_func inet_aton $network_extralibs
6041
6042     check_type netdb.h "struct addrinfo"
6043     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
6044     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
6045     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
6046     check_type poll.h "struct pollfd"
6047     check_type netinet/sctp.h "struct sctp_event_subscribe"
6048     check_struct "sys/socket.h" "struct msghdr" msg_flags
6049     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
6050     check_type netinet/in.h "struct sockaddr_in6"
6051     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
6052     check_type "sys/types.h sys/socket.h" socklen_t
6053
6054     # Prefer arpa/inet.h over winsock2
6055     if check_headers arpa/inet.h ; then
6056         check_func closesocket
6057     elif check_headers winsock2.h ; then
6058         check_func_headers winsock2.h closesocket -lws2 &&
6059             network_extralibs="-lws2" ||
6060         { check_func_headers winsock2.h closesocket -lws2_32 &&
6061             network_extralibs="-lws2_32"; } || disable winsock2_h network
6062         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
6063
6064         check_type ws2tcpip.h socklen_t
6065         check_type ws2tcpip.h "struct addrinfo"
6066         check_type ws2tcpip.h "struct group_source_req"
6067         check_type ws2tcpip.h "struct ip_mreq_source"
6068         check_type ws2tcpip.h "struct ipv6_mreq"
6069         check_type winsock2.h "struct pollfd"
6070         check_struct winsock2.h "struct sockaddr" sa_len
6071         check_type ws2tcpip.h "struct sockaddr_in6"
6072         check_type ws2tcpip.h "struct sockaddr_storage"
6073     else
6074         disable network
6075     fi
6076 fi
6077
6078 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
6079 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
6080 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
6081 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
6082 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
6083 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
6084 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
6085
6086 case "$custom_allocator" in
6087     jemalloc)
6088         # jemalloc by default does not use a prefix
6089         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
6090     ;;
6091     tcmalloc)
6092         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
6093         malloc_prefix=tc_
6094     ;;
6095 esac
6096
6097 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
6098 check_func  ${malloc_prefix}memalign            && enable memalign
6099 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
6100
6101 check_func  access
6102 check_func_headers stdlib.h arc4random
6103 check_lib   clock_gettime time.h clock_gettime || check_lib clock_gettime time.h clock_gettime -lrt
6104 check_func  fcntl
6105 check_func  fork
6106 check_func  gethrtime
6107 check_func  getopt
6108 check_func  getrusage
6109 check_func  gettimeofday
6110 check_func  isatty
6111 check_func  mkstemp
6112 check_func  mmap
6113 check_func  mprotect
6114 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
6115 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
6116 check_func  sched_getaffinity
6117 check_func  setrlimit
6118 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
6119 check_func  strerror_r
6120 check_func  sysconf
6121 check_func  sysctl
6122 check_func  usleep
6123
6124 check_func_headers conio.h kbhit
6125 check_func_headers io.h setmode
6126 check_func_headers lzo/lzo1x.h lzo1x_999_compress
6127 check_func_headers mach/mach_time.h mach_absolute_time
6128 check_func_headers stdlib.h getenv
6129 check_func_headers sys/stat.h lstat
6130
6131 check_func_headers windows.h GetModuleHandle
6132 check_func_headers windows.h GetProcessAffinityMask
6133 check_func_headers windows.h GetProcessTimes
6134 check_func_headers windows.h GetStdHandle
6135 check_func_headers windows.h GetSystemTimeAsFileTime
6136 check_func_headers windows.h LoadLibrary
6137 check_func_headers windows.h MapViewOfFile
6138 check_func_headers windows.h PeekNamedPipe
6139 check_func_headers windows.h SetConsoleTextAttribute
6140 check_func_headers windows.h SetConsoleCtrlHandler
6141 check_func_headers windows.h SetDllDirectory
6142 check_func_headers windows.h Sleep
6143 check_func_headers windows.h VirtualAlloc
6144 check_func_headers glob.h glob
6145 enabled xlib &&
6146     check_lib xlib "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
6147
6148 check_headers direct.h
6149 check_headers dirent.h
6150 check_headers dxgidebug.h
6151 check_headers dxva.h
6152 check_headers dxva2api.h -D_WIN32_WINNT=0x0600
6153 check_headers io.h
6154 check_headers linux/perf_event.h
6155 check_headers libcrystalhd/libcrystalhd_if.h
6156 check_headers malloc.h
6157 check_headers mftransform.h
6158 check_headers net/udplite.h
6159 check_headers poll.h
6160 check_headers sys/param.h
6161 check_headers sys/resource.h
6162 check_headers sys/select.h
6163 check_headers sys/time.h
6164 check_headers sys/un.h
6165 check_headers termios.h
6166 check_headers unistd.h
6167 check_headers valgrind/valgrind.h
6168 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
6169 check_headers windows.h
6170 check_headers X11/extensions/XvMClib.h
6171 check_headers asm/types.h
6172
6173 # it seems there are versions of clang in some distros that try to use the
6174 # gcc headers, which explodes for stdatomic
6175 # so we also check that atomics actually work here
6176 check_builtin stdatomic stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0); foo += bar"
6177
6178 check_lib advapi32 "windows.h"            RegCloseKey          -ladvapi32
6179 check_lib bcrypt   "windows.h bcrypt.h"   BCryptGenRandom      -lbcrypt &&
6180     check_cpp_condition bcrypt bcrypt.h "defined BCRYPT_RNG_ALGORITHM"
6181 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
6182 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
6183 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
6184
6185 check_lib android android/native_window.h ANativeWindow_acquire -landroid
6186 check_lib mediandk "stdint.h media/NdkImage.h" AImage_delete -lmediandk
6187 check_lib camera2ndk "stdbool.h stdint.h camera/NdkCameraManager.h" ACameraManager_create -lcamera2ndk
6188
6189 enabled appkit       && check_apple_framework AppKit
6190 enabled audiotoolbox && check_apple_framework AudioToolbox
6191 enabled avfoundation && check_apple_framework AVFoundation
6192 enabled coreimage    && check_apple_framework CoreImage
6193 enabled videotoolbox && check_apple_framework VideoToolbox
6194
6195 check_apple_framework CoreFoundation
6196 check_apple_framework CoreMedia
6197 check_apple_framework CoreVideo
6198 check_apple_framework CoreAudio
6199
6200 enabled avfoundation && {
6201     disable coregraphics applicationservices
6202     check_lib coregraphics        CoreGraphics/CoreGraphics.h               CGGetActiveDisplayList "-framework CoreGraphics" ||
6203     check_lib applicationservices ApplicationServices/ApplicationServices.h CGGetActiveDisplayList "-framework ApplicationServices"; }
6204
6205 enabled videotoolbox && {
6206     check_lib coreservices CoreServices/CoreServices.h UTGetOSTypeFromString "-framework CoreServices"
6207     check_func_headers CoreMedia/CMFormatDescription.h kCMVideoCodecType_HEVC "-framework CoreMedia"
6208     check_func_headers CoreVideo/CVPixelBuffer.h kCVPixelFormatType_420YpCbCr10BiPlanarVideoRange "-framework CoreVideo"
6209     check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferTransferFunction_SMPTE_ST_2084_PQ "-framework CoreVideo"
6210     check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferTransferFunction_ITU_R_2100_HLG "-framework CoreVideo"
6211     check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferTransferFunction_Linear "-framework CoreVideo"
6212 }
6213
6214 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
6215
6216 check_type "windows.h dxva.h" "DXVA_PicParams_AV1" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
6217 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
6218 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
6219 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
6220 check_type "windows.h d3d11.h" "ID3D11VideoContext"
6221 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
6222 check_func_headers mfapi.h MFCreateAlignedMemoryBuffer -lmfplat
6223
6224 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
6225 check_type "vdpau/vdpau.h" "VdpPictureInfoVP9"
6226
6227 if [ -z "$nvccflags" ]; then
6228     nvccflags=$nvccflags_default
6229 fi
6230
6231 if enabled x86_64 || enabled ppc64 || enabled aarch64; then
6232     nvccflags="$nvccflags -m64"
6233 else
6234     nvccflags="$nvccflags -m32"
6235 fi
6236
6237 if enabled cuda_nvcc; then
6238     nvccflags="$nvccflags -ptx"
6239 else
6240     nvccflags="$nvccflags -S -nocudalib -nocudainc --cuda-device-only -include ${source_link}/compat/cuda/cuda_runtime.h"
6241     check_nvcc cuda_llvm
6242 fi
6243
6244 if ! disabled ffnvcodec; then
6245     ffnv_hdr_list="ffnvcodec/nvEncodeAPI.h ffnvcodec/dynlink_cuda.h ffnvcodec/dynlink_cuviddec.h ffnvcodec/dynlink_nvcuvid.h"
6246     check_pkg_config ffnvcodec "ffnvcodec >= 9.1.23.1" "$ffnv_hdr_list" "" || \
6247       check_pkg_config ffnvcodec "ffnvcodec >= 9.0.18.3 ffnvcodec < 9.1" "$ffnv_hdr_list" "" || \
6248       check_pkg_config ffnvcodec "ffnvcodec >= 8.2.15.10 ffnvcodec < 8.3" "$ffnv_hdr_list" "" || \
6249       check_pkg_config ffnvcodec "ffnvcodec >= 8.1.24.11 ffnvcodec < 8.2" "$ffnv_hdr_list" ""
6250 fi
6251
6252 check_cpp_condition winrt windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)"
6253
6254 if ! disabled w32threads && ! enabled pthreads; then
6255     check_func_headers "windows.h process.h" _beginthreadex &&
6256         check_type "windows.h" CONDITION_VARIABLE &&
6257         check_type "windows.h" INIT_ONCE &&
6258         enable w32threads || disable w32threads
6259     if ! enabled w32threads && enabled winrt; then
6260         check_func_headers "windows.h" CreateThread &&
6261             enable w32threads || disable w32threads
6262     fi
6263 fi
6264
6265 # check for some common methods of building with pthread support
6266 # do this before the optional library checks as some of them require pthreads
6267 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
6268     if check_lib pthreads pthread.h pthread_join   -pthread &&
6269        check_lib pthreads pthread.h pthread_create -pthread; then
6270         add_cflags -pthread
6271     elif check_lib pthreads pthread.h pthread_join   -pthreads &&
6272          check_lib pthreads pthread.h pthread_create -pthreads; then
6273         add_cflags -pthreads
6274     elif check_lib pthreads pthread.h pthread_join   -ldl -pthread &&
6275          check_lib pthreads pthread.h pthread_create -ldl -pthread; then
6276         add_cflags -ldl -pthread
6277     elif check_lib pthreads pthread.h pthread_join   -lpthreadGC2 &&
6278          check_lib pthreads pthread.h pthread_create -lpthreadGC2; then
6279         :
6280     elif check_lib pthreads pthread.h pthread_join   -lpthread &&
6281          check_lib pthreads pthread.h pthread_create -lpthread; then
6282         :
6283     elif check_func pthread_join && check_func pthread_create; then
6284         enable pthreads
6285     fi
6286     check_cc pthreads "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER"
6287
6288     if enabled pthreads; then
6289         check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
6290         check_func pthread_cancel $pthreads_extralibs
6291     fi
6292 fi
6293
6294 enabled  zlib && { check_pkg_config zlib zlib "zlib.h" zlibVersion ||
6295                    check_lib zlib   zlib.h      zlibVersion    -lz; }
6296 enabled bzlib && check_lib bzlib bzlib.h BZ2_bzlibVersion    -lbz2
6297 enabled  lzma && check_lib lzma   lzma.h lzma_version_number -llzma
6298
6299 # On some systems dynamic loading requires no extra linker flags
6300 check_lib libdl dlfcn.h "dlopen dlsym" || check_lib libdl dlfcn.h "dlopen dlsym" -ldl
6301
6302 check_lib libm math.h sin -lm
6303
6304 atan2f_args=2
6305 copysign_args=2
6306 hypot_args=2
6307 ldexpf_args=2
6308 powf_args=2
6309
6310 for func in $MATH_FUNCS; do
6311     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
6312 done
6313
6314 for func in $COMPLEX_FUNCS; do
6315     eval check_complexfunc $func \${${func}_args:-1}
6316 done
6317
6318 # these are off by default, so fail if requested and not available
6319 enabled avisynth          && require_headers "avisynth/avisynth_c.h"
6320 enabled cuda_nvcc         && { check_nvcc cuda_nvcc || die "ERROR: failed checking for nvcc."; }
6321 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
6322 enabled decklink          && { require_headers DeckLinkAPI.h &&
6323                                { test_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a0a0000" || die "ERROR: Decklink API version must be >= 10.10"; } }
6324 enabled frei0r            && require_headers "frei0r.h dlfcn.h"
6325 enabled gmp               && require gmp gmp.h mpz_export -lgmp
6326 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init
6327 enabled jni               && { [ $target_os = "android" ] && check_headers jni.h && enabled pthreads || die "ERROR: jni not found"; }
6328 enabled ladspa            && require_headers "ladspa.h dlfcn.h"
6329 enabled libaom            && require_pkg_config libaom "aom >= 1.0.0" aom/aom_codec.h aom_codec_version
6330 enabled libaribb24        && { check_pkg_config libaribb24 "aribb24 > 1.0.3" "aribb24/aribb24.h" arib_instance_new ||
6331                                { enabled gpl && require_pkg_config libaribb24 aribb24 "aribb24/aribb24.h" arib_instance_new; } ||
6332                                die "ERROR: libaribb24 requires version higher than 1.0.3 or --enable-gpl."; }
6333 enabled lv2               && require_pkg_config lv2 lilv-0 "lilv/lilv.h" lilv_world_new
6334 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
6335 enabled libass            && require_pkg_config libass libass ass/ass.h ass_library_init
6336 enabled libbluray         && require_pkg_config libbluray libbluray libbluray/bluray.h bd_open
6337 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
6338 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
6339                              { check_lib libcelt celt/celt.h celt_decoder_create_custom -lcelt0 ||
6340                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
6341 enabled libcaca           && require_pkg_config libcaca caca caca.h caca_create_canvas
6342 enabled libcodec2         && require libcodec2 codec2/codec2.h codec2_create -lcodec2
6343 enabled libdav1d          && require_pkg_config libdav1d "dav1d >= 0.5.0" "dav1d/dav1d.h" dav1d_version
6344 enabled libdavs2          && require_pkg_config libdavs2 "davs2 >= 1.6.0" davs2.h davs2_decoder_open
6345 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
6346 enabled libdrm            && require_pkg_config libdrm libdrm xf86drm.h drmGetVersion
6347 enabled libfdk_aac        && { check_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
6348                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
6349                                  warn "using libfdk without pkg-config"; } }
6350 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"
6351 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_extralibs
6352 enabled fontconfig        && enable libfontconfig
6353 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
6354 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
6355 enabled libfribidi        && require_pkg_config libfribidi fribidi fribidi.h fribidi_version_info
6356 enabled libglslang        && require_cpp libglslang glslang/SPIRV/GlslangToSpv.h "glslang::TIntermediate*" -lglslang -lMachineIndependent -lOSDependent -lHLSL -lOGLCompiler -lGenericCodeGen -lSPVRemapper -lSPIRV -lSPIRV-Tools-opt -lSPIRV-Tools -lpthread -lstdc++
6357 enabled libgme            && { check_pkg_config libgme libgme gme/gme.h gme_new_emu ||
6358                                require libgme gme/gme.h gme_new_emu -lgme -lstdc++; }
6359 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
6360                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
6361                                done || die "ERROR: libgsm not found"; }
6362 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc $pthreads_extralibs
6363 enabled libklvanc         && require libklvanc libklvanc/vanc.h klvanc_context_create -lklvanc
6364 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
6365 enabled liblensfun        && require_pkg_config liblensfun lensfun lensfun.h lf_db_new
6366 # While it may appear that require is being used as a pkg-config
6367 # fallback for libmfx, it is actually being used to detect a different
6368 # installation route altogether.  If libmfx is installed via the Intel
6369 # Media SDK or Intel Media Server Studio, these don't come with
6370 # pkg-config support.  Instead, users should make sure that the build
6371 # can find the libraries and headers through other means.
6372 enabled libmfx            && { check_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit ||
6373                                { require libmfx "mfx/mfxvideo.h" MFXInit "-llibmfx $advapi32_extralibs" && warn "using libmfx without pkg-config"; } }
6374 if enabled libmfx; then
6375    check_cc MFX_CODEC_VP9 "mfx/mfxvp9.h mfx/mfxstructures.h" "MFX_CODEC_VP9"
6376 fi
6377
6378 enabled libmodplug        && require_pkg_config libmodplug libmodplug libmodplug/modplug.h ModPlug_Load
6379 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame $libm_extralibs
6380 enabled libmysofa         && { check_pkg_config libmysofa libmysofa mysofa.h mysofa_neighborhood_init_withstepdefine ||
6381                                require libmysofa mysofa.h mysofa_neighborhood_init_withstepdefine -lmysofa $zlib_extralibs; }
6382 enabled libnpp            && { check_lib libnpp npp.h nppGetLibVersion -lnppig -lnppicc -lnppc -lnppidei ||
6383                                check_lib libnpp npp.h nppGetLibVersion -lnppi -lnppc -lnppidei ||
6384                                die "ERROR: libnpp not found"; }
6385 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
6386 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
6387 enabled libopencv         && { check_headers opencv2/core/core_c.h &&
6388                                { check_pkg_config libopencv opencv opencv2/core/core_c.h cvCreateImageHeader ||
6389                                  require libopencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
6390                                require_pkg_config libopencv opencv opencv/cxcore.h cvCreateImageHeader; }
6391 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
6392 enabled libopenjpeg       && { check_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version ||
6393                                { require_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } }
6394 enabled libopenmpt        && require_pkg_config libopenmpt "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create -lstdc++ && append libopenmpt_extralibs "-lstdc++"
6395 enabled libopenvino       && require libopenvino c_api/ie_c_api.h ie_c_api_version -linference_engine_c_api
6396 enabled libopus           && {
6397     enabled libopus_decoder && {
6398         require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
6399     }
6400     enabled libopus_encoder && {
6401         require_pkg_config libopus opus opus_multistream.h opus_multistream_surround_encoder_create
6402     }
6403 }
6404 enabled libpulse          && require_pkg_config libpulse libpulse pulse/pulseaudio.h pa_context_new
6405 enabled librabbitmq       && require_pkg_config librabbitmq "librabbitmq >= 0.7.1" amqp.h amqp_new_connection
6406 enabled librav1e          && require_pkg_config librav1e "rav1e >= 0.1.0" rav1e.h rav1e_context_new
6407 enabled librsvg           && require_pkg_config librsvg librsvg-2.0 librsvg-2.0/librsvg/rsvg.h rsvg_handle_render_cairo
6408 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
6409 enabled librubberband     && require_pkg_config librubberband "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new -lstdc++ && append librubberband_extralibs "-lstdc++"
6410 enabled libshine          && require_pkg_config libshine shine shine/layer3.h shine_encode_buffer
6411 enabled libsmbclient      && { check_pkg_config libsmbclient smbclient libsmbclient.h smbc_init ||
6412                                require libsmbclient libsmbclient.h smbc_init -lsmbclient; }
6413 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy -lstdc++
6414 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
6415 enabled libssh            && require_pkg_config libssh libssh libssh/sftp.h sftp_init
6416 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init
6417 enabled libsrt            && require_pkg_config libsrt "srt >= 1.3.0" srt/srt.h srt_socket
6418 enabled libsvtav1         && require_pkg_config libsvtav1 "SvtAv1Enc >= 0.8.4" EbSvtAv1Enc.h svt_av1_enc_init_handle
6419 enabled libtensorflow     && require libtensorflow tensorflow/c/c_api.h TF_Version -ltensorflow
6420 enabled libtesseract      && require_pkg_config libtesseract tesseract tesseract/capi.h TessBaseAPICreate
6421 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
6422 enabled libtls            && require_pkg_config libtls libtls tls.h tls_configure
6423 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
6424                              { check_lib libtwolame twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
6425                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
6426 enabled libuavs3d         && require_pkg_config libuavs3d "uavs3d >= 1.1.41" uavs3d.h uavs3d_decode
6427 enabled libv4l2           && require_pkg_config libv4l2 libv4l2 libv4l2.h v4l2_ioctl
6428 enabled libvidstab        && require_pkg_config libvidstab "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
6429 enabled libvmaf           && require_pkg_config libvmaf "libvmaf >= 1.5.2" libvmaf.h compute_vmaf
6430 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
6431 enabled libvorbis         && require_pkg_config libvorbis vorbis vorbis/codec.h vorbis_info_init &&
6432                              require_pkg_config libvorbisenc vorbisenc vorbis/vorbisenc.h vorbis_encode_init
6433
6434 enabled libvpx            && {
6435     enabled libvpx_vp8_decoder && {
6436         check_pkg_config libvpx_vp8_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
6437             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"
6438     }
6439     enabled libvpx_vp8_encoder && {
6440         check_pkg_config libvpx_vp8_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
6441             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"
6442     }
6443     enabled libvpx_vp9_decoder && {
6444         check_pkg_config libvpx_vp9_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
6445             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"
6446     }
6447     enabled libvpx_vp9_encoder && {
6448         check_pkg_config libvpx_vp9_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
6449             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"
6450     }
6451     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
6452         die "libvpx enabled but no supported decoders found"
6453     fi
6454 }
6455
6456 enabled libwebp           && {
6457     enabled libwebp_encoder      && require_pkg_config libwebp "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
6458     enabled libwebp_anim_encoder && check_pkg_config libwebp_anim_encoder "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit; }
6459 enabled libx264           && { check_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode ||
6460                                { require libx264 "stdint.h x264.h" x264_encoder_encode "-lx264 $pthreads_extralibs $libm_extralibs" &&
6461                                  warn "using libx264 without pkg-config"; } } &&
6462                              require_cpp_condition libx264 x264.h "X264_BUILD >= 118" &&
6463                              check_cpp_condition libx262 x264.h "X264_MPEG2"
6464 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
6465                              require_cpp_condition libx265 x265.h "X265_BUILD >= 70"
6466 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode "-lxavs $pthreads_extralibs $libm_extralibs"
6467 enabled libxavs2          && require_pkg_config libxavs2 "xavs2 >= 1.3.0" "stdint.h xavs2.h" xavs2_api_get
6468 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
6469 enabled libzimg           && require_pkg_config libzimg "zimg >= 2.7.0" zimg.h zimg_get_api_version
6470 enabled libzmq            && require_pkg_config libzmq "libzmq >= 4.2.1" zmq.h zmq_ctx_new
6471 enabled libzvbi           && require_pkg_config libzvbi zvbi-0.2 libzvbi.h vbi_decoder_new &&
6472                              { test_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
6473                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
6474 enabled libxml2           && require_pkg_config libxml2 libxml-2.0 libxml2/libxml/xmlversion.h xmlCheckVersion
6475 enabled mbedtls           && { check_pkg_config mbedtls mbedtls mbedtls/x509_crt.h mbedtls_x509_crt_init ||
6476                                check_pkg_config mbedtls mbedtls mbedtls/ssl.h mbedtls_ssl_init ||
6477                                check_lib mbedtls mbedtls/ssl.h mbedtls_ssl_init -lmbedtls -lmbedx509 -lmbedcrypto ||
6478                                die "ERROR: mbedTLS not found"; }
6479 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
6480 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
6481                                { ! enabled cross_compile &&
6482                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
6483                                  add_ldflags -L/opt/vc/lib/ &&
6484                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
6485                                die "ERROR: mmal not found" &&
6486                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
6487 enabled openal            && { { for al_extralibs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
6488                                check_lib openal 'AL/al.h' alGetError "${al_extralibs}" && break; done } ||
6489                                die "ERROR: openal not found"; } &&
6490                              { test_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
6491                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
6492 enabled opencl            && { check_pkg_config opencl OpenCL CL/cl.h clEnqueueNDRangeKernel ||
6493                                check_lib opencl OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
6494                                check_lib opencl CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
6495                                die "ERROR: opencl not found"; } &&
6496                              { test_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
6497                                test_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
6498                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
6499 enabled opengl            && { check_lib opengl GL/glx.h glXGetProcAddress "-lGL" ||
6500                                check_lib opengl windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
6501                                check_lib opengl OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
6502                                check_lib opengl ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
6503                                die "ERROR: opengl not found."
6504                              }
6505 enabled omx_rpi           && { test_code cc OMX_Core.h OMX_IndexConfigBrcmVideoRequestIFrame ||
6506                                { ! enabled cross_compile &&
6507                                  add_cflags -isystem/opt/vc/include/IL &&
6508                                  test_code cc OMX_Core.h OMX_IndexConfigBrcmVideoRequestIFrame; } ||
6509                                die "ERROR: OpenMAX IL headers from raspberrypi/firmware not found"; } &&
6510                              enable omx
6511 enabled omx               && require_headers OMX_Core.h
6512 enabled openssl           && { check_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
6513                                check_pkg_config openssl openssl openssl/ssl.h SSL_library_init ||
6514                                check_lib openssl openssl/ssl.h OPENSSL_init_ssl -lssl -lcrypto ||
6515                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
6516                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
6517                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
6518                                die "ERROR: openssl not found"; }
6519 enabled pocketsphinx      && require_pkg_config pocketsphinx pocketsphinx pocketsphinx/pocketsphinx.h ps_init
6520 enabled rkmpp             && { require_pkg_config rkmpp rockchip_mpp  rockchip/rk_mpi.h mpp_create &&
6521                                require_pkg_config rockchip_mpp "rockchip_mpp >= 1.3.7" rockchip/rk_mpi.h mpp_create &&
6522                                { enabled libdrm ||
6523                                  die "ERROR: rkmpp requires --enable-libdrm"; }
6524                              }
6525 enabled vapoursynth       && require_pkg_config vapoursynth "vapoursynth-script >= 42" VSScript.h vsscript_init
6526
6527
6528 if enabled gcrypt; then
6529     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
6530     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
6531         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
6532         gcrypt_extralibs=$("${GCRYPT_CONFIG}" --libs)
6533         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_extralibs ||
6534             die "ERROR: gcrypt not found"
6535         add_cflags $gcrypt_cflags
6536     else
6537         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
6538     fi
6539 fi
6540
6541 if enabled sdl2; then
6542     SDL2_CONFIG="${cross_prefix}sdl2-config"
6543     test_pkg_config sdl2 "sdl2 >= 2.0.1 sdl2 < 2.1.0" SDL_events.h SDL_PollEvent
6544     if disabled sdl2 && "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
6545         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
6546         sdl2_extralibs=$("${SDL2_CONFIG}" --libs)
6547         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
6548         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
6549         check_func_headers SDL_events.h SDL_PollEvent $sdl2_extralibs $sdl2_cflags &&
6550             enable sdl2
6551     fi
6552     if test $target_os = "mingw32"; then
6553         sdl2_extralibs=$(filter_out '-mwindows' $sdl2_extralibs)
6554     fi
6555 fi
6556
6557 if enabled decklink; then
6558     case $target_os in
6559         mingw32*|mingw64*|win32|win64)
6560             decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
6561             decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
6562             ;;
6563     esac
6564 fi
6565
6566 enabled securetransport &&
6567     check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
6568     check_lib securetransport "Security/SecureTransport.h Security/Security.h" "SSLCreateContext" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" ||
6569         disable securetransport
6570
6571 enabled securetransport &&
6572     check_func SecItemImport "-Wl,-framework,CoreFoundation -Wl,-framework,Security"
6573
6574 enabled schannel &&
6575     check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
6576     test_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" &&
6577     schannel_extralibs="-lsecur32" ||
6578         disable schannel
6579
6580 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
6581 enabled makeinfo \
6582     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
6583     && enable makeinfo_html || disable makeinfo_html
6584 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
6585 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
6586 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
6587 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
6588
6589 # check V4L2 codecs available in the API
6590 if enabled v4l2_m2m; then
6591     check_headers linux/fb.h
6592     check_headers linux/videodev2.h
6593     test_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6594     check_cc v4l2_m2m linux/videodev2.h "int i = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_VIDEO_M2M | V4L2_BUF_FLAG_LAST;"
6595     check_cc vc1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VC1_ANNEX_G;"
6596     check_cc mpeg1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG1;"
6597     check_cc mpeg2_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG2;"
6598     check_cc mpeg4_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG4;"
6599     check_cc hevc_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_HEVC;"
6600     check_cc h263_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H263;"
6601     check_cc h264_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H264;"
6602     check_cc vp8_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP8;"
6603     check_cc vp9_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP9;"
6604 fi
6605
6606 check_headers sys/videoio.h
6607 test_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6608
6609 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
6610 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
6611 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
6612 # w32api 3.12 had it defined wrong
6613 check_cpp_condition vfwcap_defines vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER"
6614
6615 check_type "dshow.h" IBaseFilter
6616
6617 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
6618 check_headers "dev/bktr/ioctl_meteor.h dev/bktr/ioctl_bt848.h"                   ||
6619     check_headers "machine/ioctl_meteor.h machine/ioctl_bt848.h"                 ||
6620     check_headers "dev/video/meteor/ioctl_meteor.h dev/video/bktr/ioctl_bt848.h" ||
6621     check_headers "dev/ic/bt8xx.h"
6622
6623 if check_struct sys/soundcard.h audio_buf_info bytes; then
6624     enable_sanitized sys/soundcard.h
6625 else
6626     test_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_sanitized sys/soundcard.h
6627     #include <sys/soundcard.h>
6628     audio_buf_info abc;
6629 EOF
6630 fi
6631
6632 enabled alsa && { check_pkg_config alsa alsa "alsa/asoundlib.h" snd_pcm_htimestamp ||
6633                   check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound; }
6634
6635 enabled libjack &&
6636     require_pkg_config libjack jack jack/jack.h jack_port_get_latency_range
6637
6638 enabled sndio && check_lib sndio sndio.h sio_open -lsndio
6639
6640 if enabled libcdio; then
6641     check_pkg_config libcdio libcdio_paranoia "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open ||
6642     check_pkg_config libcdio libcdio_paranoia "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open ||
6643     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6644     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6645     die "ERROR: No usable libcdio/cdparanoia found"
6646 fi
6647
6648 enabled libxcb && check_pkg_config libxcb "xcb >= 1.4" xcb/xcb.h xcb_connect ||
6649     disable libxcb_shm libxcb_shape libxcb_xfixes
6650
6651 if enabled libxcb; then
6652     enabled libxcb_shm    && check_pkg_config libxcb_shm    xcb-shm    xcb/shm.h    xcb_shm_attach
6653     enabled libxcb_shape  && check_pkg_config libxcb_shape  xcb-shape  xcb/shape.h  xcb_shape_get_rectangles
6654     enabled libxcb_xfixes && check_pkg_config libxcb_xfixes xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image
6655 fi
6656
6657 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6658
6659 # d3d11va requires linking directly to dxgi and d3d11 if not building for
6660 # the desktop api partition
6661 test_cpp <<EOF && enable uwp && d3d11va_extralibs="-ldxgi -ld3d11"
6662 #ifdef WINAPI_FAMILY
6663 #include <winapifamily.h>
6664 #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
6665 #error desktop, not uwp
6666 #else
6667 // WINAPI_FAMILY_APP, WINAPI_FAMILY_PHONE_APP => UWP
6668 #endif
6669 #else
6670 #error no family set
6671 #endif
6672 EOF
6673
6674 enabled libdrm &&
6675     check_pkg_config libdrm_getfb2 libdrm "xf86drmMode.h" drmModeGetFB2
6676
6677 enabled vaapi &&
6678     check_pkg_config vaapi "libva >= 0.35.0" "va/va.h" vaInitialize
6679
6680 if enabled vaapi; then
6681     check_pkg_config vaapi_drm "libva-drm" "va/va_drm.h" vaGetDisplayDRM
6682
6683     if enabled xlib; then
6684         check_pkg_config vaapi_x11 "libva-x11" "va/va_x11.h" vaGetDisplay
6685     fi
6686
6687     check_cpp_condition vaapi_1 "va/va.h" "VA_CHECK_VERSION(1, 0, 0)"
6688
6689     check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
6690     check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
6691     check_struct "va/va.h" "VADecPictureParameterBufferAV1" bit_depth_idx
6692     check_type   "va/va.h va/va_vpp.h" "VAProcFilterParameterBufferHDRToneMapping"
6693     check_struct "va/va.h va/va_vpp.h" "VAProcPipelineCaps" rotation_flags
6694     check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
6695     check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
6696     check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
6697     check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
6698 fi
6699
6700 if enabled_all opencl libdrm ; then
6701     check_type "CL/cl_intel.h" "clCreateImageFromFdINTEL_fn" &&
6702         enable opencl_drm_beignet
6703     check_func_headers "CL/cl_ext.h" clImportMemoryARM &&
6704         enable opencl_drm_arm
6705 fi
6706
6707 if enabled_all opencl vaapi ; then
6708     if enabled opencl_drm_beignet ; then
6709         enable opencl_vaapi_beignet
6710     else
6711         check_type "CL/cl.h CL/cl_va_api_media_sharing_intel.h" "clCreateFromVA_APIMediaSurfaceINTEL_fn" &&
6712             enable opencl_vaapi_intel_media
6713     fi
6714 fi
6715
6716 if enabled_all opencl dxva2 ; then
6717     check_type "CL/cl_dx9_media_sharing.h" cl_dx9_surface_info_khr &&
6718         enable opencl_dxva2
6719 fi
6720
6721 if enabled_all opencl d3d11va ; then
6722     check_type "CL/cl_d3d11.h" clGetDeviceIDsFromD3D11KHR_fn &&
6723         enable opencl_d3d11
6724 fi
6725
6726 enabled vdpau &&
6727     check_cpp_condition vdpau vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP"
6728
6729 enabled vdpau &&
6730     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
6731
6732 enabled crystalhd && check_lib crystalhd "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd
6733
6734 enabled vulkan &&
6735     require_pkg_config vulkan "vulkan >= 1.1.97" "vulkan/vulkan.h" vkCreateInstance
6736
6737 if enabled x86; then
6738     case $target_os in
6739         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6740             ;;
6741         *)
6742             disable ffnvcodec cuvid nvdec nvenc
6743             ;;
6744     esac
6745 elif enabled_any aarch64 ppc64 && ! enabled bigendian; then
6746     case $target_os in
6747         linux)
6748             ;;
6749         *)
6750             disable ffnvcodec cuvid nvdec nvenc
6751             ;;
6752     esac
6753 else
6754     disable ffnvcodec cuvid nvdec nvenc
6755 fi
6756
6757 enabled ffnvcodec && enable cuda
6758
6759 enabled nvenc &&
6760     test_cc -I$source_path <<EOF || disable nvenc
6761 #include <ffnvcodec/nvEncodeAPI.h>
6762 NV_ENCODE_API_FUNCTION_LIST flist;
6763 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6764 int main(void) { return 0; }
6765 EOF
6766
6767 if enabled_any nvdec cuvid; then
6768     check_type "ffnvcodec/dynlink_cuda.h ffnvcodec/dynlink_cuviddec.h" "CUVIDAV1PICPARAMS"
6769 fi
6770
6771 enabled amf &&
6772     check_cpp_condition amf "AMF/core/Version.h" \
6773         "(AMF_VERSION_MAJOR << 48 | AMF_VERSION_MINOR << 32 | AMF_VERSION_RELEASE << 16 | AMF_VERSION_BUILD_NUM) >= 0x0001000400090000"
6774
6775 # Funny iconv installations are not unusual, so check it after all flags have been set
6776 if enabled libc_iconv; then
6777     check_func_headers iconv.h iconv
6778 elif enabled iconv; then
6779     check_func_headers iconv.h iconv || check_lib iconv iconv.h iconv -liconv
6780 fi
6781
6782 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6783
6784 # add some useful compiler flags if supported
6785 check_cflags -Wdeclaration-after-statement
6786 check_cflags -Wall
6787 check_cflags -Wdisabled-optimization
6788 check_cflags -Wpointer-arith
6789 check_cflags -Wredundant-decls
6790 check_cflags -Wwrite-strings
6791 check_cflags -Wtype-limits
6792 check_cflags -Wundef
6793 check_cflags -Wmissing-prototypes
6794 check_cflags -Wno-pointer-to-int-cast
6795 check_cflags -Wstrict-prototypes
6796 check_cflags -Wempty-body
6797
6798 if enabled extra_warnings; then
6799     check_cflags -Wcast-qual
6800     check_cflags -Wextra
6801     check_cflags -Wpedantic
6802 fi
6803
6804 check_disable_warning(){
6805     warning_flag=-W${1#-Wno-}
6806     test_cflags $unknown_warning_flags $warning_flag && add_cflags $1
6807 }
6808
6809 test_cflags -Werror=unused-command-line-argument &&
6810     append unknown_warning_flags "-Werror=unused-command-line-argument"
6811 test_cflags -Werror=unknown-warning-option &&
6812     append unknown_warning_flags "-Werror=unknown-warning-option"
6813
6814 check_disable_warning -Wno-parentheses
6815 check_disable_warning -Wno-switch
6816 check_disable_warning -Wno-format-zero-length
6817 check_disable_warning -Wno-pointer-sign
6818 check_disable_warning -Wno-unused-const-variable
6819 check_disable_warning -Wno-bool-operation
6820 check_disable_warning -Wno-char-subscripts
6821
6822 check_disable_warning_headers(){
6823     warning_flag=-W${1#-Wno-}
6824     test_cflags $warning_flag && add_cflags_headers $1
6825 }
6826
6827 check_disable_warning_headers -Wno-deprecated-declarations
6828 check_disable_warning_headers -Wno-unused-variable
6829
6830 test_cc <<EOF && enable blocks_extension
6831 void (^block)(void);
6832 EOF
6833
6834 # add some linker flags
6835 check_ldflags -Wl,--warn-common
6836 check_ldflags -Wl,-rpath-link=:libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6837 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir && add_ldsoflags -Wl,-rpath,$libdir
6838 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6839
6840 # add some strip flags
6841 check_stripflags -x
6842
6843 enabled neon_clobber_test &&
6844     check_ldflags -Wl,--wrap,avcodec_open2              \
6845                   -Wl,--wrap,avcodec_decode_audio4      \
6846                   -Wl,--wrap,avcodec_decode_video2      \
6847                   -Wl,--wrap,avcodec_decode_subtitle2   \
6848                   -Wl,--wrap,avcodec_encode_audio2      \
6849                   -Wl,--wrap,avcodec_encode_video2      \
6850                   -Wl,--wrap,avcodec_encode_subtitle    \
6851                   -Wl,--wrap,avcodec_send_packet        \
6852                   -Wl,--wrap,avcodec_receive_packet     \
6853                   -Wl,--wrap,avcodec_send_frame         \
6854                   -Wl,--wrap,avcodec_receive_frame      \
6855                   -Wl,--wrap,swr_convert                \
6856                   -Wl,--wrap,avresample_convert ||
6857     disable neon_clobber_test
6858
6859 enabled xmm_clobber_test &&
6860     check_ldflags -Wl,--wrap,avcodec_open2              \
6861                   -Wl,--wrap,avcodec_decode_audio4      \
6862                   -Wl,--wrap,avcodec_decode_video2      \
6863                   -Wl,--wrap,avcodec_decode_subtitle2   \
6864                   -Wl,--wrap,avcodec_encode_audio2      \
6865                   -Wl,--wrap,avcodec_encode_video2      \
6866                   -Wl,--wrap,avcodec_encode_subtitle    \
6867                   -Wl,--wrap,avcodec_send_packet        \
6868                   -Wl,--wrap,avcodec_receive_packet     \
6869                   -Wl,--wrap,avcodec_send_frame         \
6870                   -Wl,--wrap,avcodec_receive_frame      \
6871                   -Wl,--wrap,swr_convert                \
6872                   -Wl,--wrap,avresample_convert         \
6873                   -Wl,--wrap,sws_scale ||
6874     disable xmm_clobber_test
6875
6876 check_ld "cc" proper_dce <<EOF
6877 extern const int array[512];
6878 static inline int func(void) { return array[0]; }
6879 int main(void) { return 0; }
6880 EOF
6881
6882 if enabled proper_dce; then
6883     echo "X { local: *; };" > $TMPV
6884     if test_ldflags -Wl,${version_script},$TMPV; then
6885         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6886         quotes='""'
6887         test_cc <<EOF && enable symver_asm_label
6888 void ff_foo(void) __asm__ ("av_foo@VERSION");
6889 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6890 EOF
6891         test_cc <<EOF && enable symver_gnu_asm
6892 __asm__(".symver ff_foo,av_foo@VERSION");
6893 void ff_foo(void) {}
6894 EOF
6895     fi
6896 fi
6897
6898 if [ -z "$optflags" ]; then
6899     if enabled small; then
6900         optflags=$cflags_size
6901     elif enabled optimizations; then
6902         optflags=$cflags_speed
6903     else
6904         optflags=$cflags_noopt
6905     fi
6906 fi
6907
6908 check_optflags(){
6909     check_cflags "$@"
6910     enabled lto && check_ldflags "$@"
6911 }
6912
6913 check_optflags $optflags
6914 check_optflags -fno-math-errno
6915 check_optflags -fno-signed-zeros
6916
6917 if enabled lto; then
6918     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6919     check_cflags  -flto
6920     check_ldflags -flto $cpuflags
6921     disable inline_asm_direct_symbol_refs
6922 fi
6923
6924 enabled ftrapv && check_cflags -ftrapv
6925
6926 test_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6927 int x;
6928 EOF
6929
6930
6931 if enabled icc; then
6932     # Just warnings, no remarks
6933     check_cflags -w1
6934     # -wd: Disable following warnings
6935     # 144, 167, 556: -Wno-pointer-sign
6936     # 188: enumerated type mixed with another type
6937     # 1292: attribute "foo" ignored
6938     # 1419: external declaration in primary source file
6939     # 10006: ignoring unknown option -fno-signed-zeros
6940     # 10148: ignoring unknown option -Wno-parentheses
6941     # 10156: ignoring option '-W'; no argument required
6942     # 13200: No EMMS instruction before call to function
6943     # 13203: No EMMS instruction before return from function
6944     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6945     # 11030: Warning unknown option --as-needed
6946     # 10156: ignoring option '-export'; no argument required
6947     check_ldflags -wd10156,11030
6948     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6949     enable ebp_available
6950     # The test above does not test linking
6951     enabled lto && disable symver_asm_label
6952     if enabled x86_32; then
6953         icc_version=$($cc -dumpversion)
6954         test ${icc_version%%.*} -ge 11 &&
6955             check_cflags -falign-stack=maintain-16-byte ||
6956             disable aligned_stack
6957     fi
6958 elif enabled gcc; then
6959     check_optflags -fno-tree-vectorize
6960     check_cflags -Werror=format-security
6961     check_cflags -Werror=implicit-function-declaration
6962     check_cflags -Werror=missing-prototypes
6963     check_cflags -Werror=return-type
6964     check_cflags -Werror=vla
6965     check_cflags -Wformat
6966     check_cflags -fdiagnostics-color=auto
6967     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6968     if enabled x86_32; then
6969         case $target_os in
6970         *bsd*)
6971             # BSDs don't guarantee a 16 byte aligned stack, but we can
6972             # request GCC to try to maintain 16 byte alignment throughout
6973             # function calls. Library entry points that might call assembly
6974             # functions align the stack. (The parameter means 2^4 bytes.)
6975             check_cflags -mpreferred-stack-boundary=4
6976             ;;
6977         esac
6978     fi
6979 elif enabled llvm_gcc; then
6980     check_cflags -mllvm -stack-alignment=16
6981 elif enabled clang; then
6982     if enabled x86_32; then
6983         # Clang doesn't support maintaining alignment without assuming the
6984         # same alignment in every function. If 16 byte alignment would be
6985         # enabled, one would also have to either add attribute_align_arg on
6986         # every single entry point into the libraries or enable -mstackrealign
6987         # (doing stack realignment in every single function).
6988         case $target_os in
6989         mingw32|win32|*bsd*)
6990             disable aligned_stack
6991             ;;
6992         *)
6993             check_cflags -mllvm -stack-alignment=16
6994             check_cflags -mstack-alignment=16
6995             ;;
6996         esac
6997     else
6998         check_cflags -mllvm -stack-alignment=16
6999         check_cflags -mstack-alignment=16
7000     fi
7001     check_cflags -Qunused-arguments
7002     check_cflags -Werror=implicit-function-declaration
7003     check_cflags -Werror=missing-prototypes
7004     check_cflags -Werror=return-type
7005 elif enabled cparser; then
7006     add_cflags -Wno-missing-variable-declarations
7007     add_cflags -Wno-empty-statement
7008 elif enabled armcc; then
7009     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
7010     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
7011     # 2523: use of inline assembly is deprecated
7012     add_cflags -W${armcc_opt},--diag_suppress=2523
7013     add_cflags -W${armcc_opt},--diag_suppress=1207
7014     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
7015     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
7016     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
7017     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
7018 elif enabled pathscale; then
7019     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
7020     disable inline_asm
7021 elif enabled_any msvc icl; then
7022     enabled x86_32 && disable aligned_stack
7023     enabled_all x86_32 debug && add_cflags -Oy-
7024     enabled debug && add_ldflags -debug
7025     enable pragma_deprecated
7026     if enabled icl; then
7027         # -Qansi-alias is basically -fstrict-aliasing, but does not work
7028         # (correctly) on icl 13.x.
7029         test_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
7030             add_cflags -Qansi-alias
7031         # Some inline asm is not compilable in debug
7032         if enabled debug; then
7033             disable ebp_available
7034             disable ebx_available
7035         fi
7036     fi
7037     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
7038     check_cpp_condition log2 crtversion.h "_VC_CRT_MAJOR_VERSION >= 12"
7039     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
7040     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
7041     # (as it ends up if the restrict redefine is done before including stdlib.h), while
7042     # MSVC 2013 and newer can handle it fine.
7043     # If this declspec fails, force including stdlib.h before the restrict redefinition
7044     # happens in config.h.
7045     if [ $restrict_keyword != restrict ]; then
7046         test_cc <<EOF || add_cflags -FIstdlib.h
7047 __declspec($restrict_keyword) void *foo(int);
7048 EOF
7049     fi
7050     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
7051     # Issue has been fixed in MSVC v19.00.24218.
7052     test_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
7053         check_cflags -d2SSAOptimizer-
7054     # enable utf-8 source processing on VS2015 U2 and newer
7055     test_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
7056         add_cflags -utf-8
7057 fi
7058
7059 for pfx in "" host_; do
7060     varname=${pfx%_}cc_type
7061     eval "type=\$$varname"
7062     if [ "$type" = "msvc" ]; then
7063         test_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
7064 static inline int foo(int a) { return a; }
7065 EOF
7066     fi
7067 done
7068
7069 case $as_type in
7070     clang)
7071         add_asflags -Qunused-arguments
7072     ;;
7073 esac
7074
7075 case $ld_type in
7076     clang)
7077         check_ldflags -Qunused-arguments
7078     ;;
7079 esac
7080
7081 enable frame_thread_encoder
7082
7083 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
7084
7085 check_deps $CONFIG_LIST       \
7086            $CONFIG_EXTRA      \
7087            $HAVE_LIST         \
7088            $ALL_COMPONENTS    \
7089
7090 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"
7091 enabled avresample && warn "Building with deprecated library libavresample"
7092
7093 case $target_os in
7094 haiku)
7095     disable memalign
7096     disable posix_memalign
7097     ;;
7098 *-dos|freedos|opendos)
7099     if test_cpp_condition sys/version.h "defined(__DJGPP__) && __DJGPP__ == 2 && __DJGPP_MINOR__ == 5"; then
7100         disable memalign
7101     fi
7102     ;;
7103 esac
7104
7105 flatten_extralibs(){
7106     nested_entries=
7107     list_name=$1
7108     eval list=\$${1}
7109     for entry in $list; do
7110         entry_copy=$entry
7111         resolve entry_copy
7112         flat_entries=
7113         for e in $entry_copy; do
7114             case $e in
7115                 *_extralibs) nested_entries="$nested_entries$e ";;
7116                           *) flat_entries="$flat_entries$e ";;
7117             esac
7118         done
7119         eval $entry="\$flat_entries"
7120     done
7121     append $list_name "$nested_entries"
7122
7123     resolve nested_entries
7124     if test -n "$(filter '*_extralibs' $nested_entries)"; then
7125         flatten_extralibs $list_name
7126     fi
7127 }
7128
7129 flatten_extralibs_wrapper(){
7130     list_name=$1
7131     flatten_extralibs $list_name
7132     unique $list_name
7133     resolve $list_name
7134     eval $list_name=\$\(\$ldflags_filter \$$list_name\)
7135     eval printf \''%s'\' \""\$$list_name"\"
7136 }
7137
7138 for linkunit in $LIBRARY_LIST; do
7139     unset current_extralibs
7140     eval components=\$$(toupper ${linkunit})_COMPONENTS_LIST
7141     for comp in ${components}; do
7142         enabled $comp || continue
7143         comp_extralibs="${comp}_extralibs"
7144         append current_extralibs $comp_extralibs
7145     done
7146     eval prepend ${linkunit}_extralibs $current_extralibs
7147 done
7148
7149 for linkunit in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
7150     eval ${linkunit}_extralibs=\$\(flatten_extralibs_wrapper ${linkunit}_extralibs\)
7151 done
7152
7153 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
7154
7155 for thread in $THREADS_LIST; do
7156     if enabled $thread; then
7157         test -n "$thread_type" &&
7158             die "ERROR: Only one thread type must be selected." ||
7159             thread_type="$thread"
7160     fi
7161 done
7162
7163 if disabled stdatomic; then
7164     if enabled atomics_gcc; then
7165         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
7166     elif enabled atomics_win32; then
7167         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
7168     elif enabled atomics_suncc; then
7169         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
7170     elif enabled pthreads; then
7171         add_compat atomics/pthread/stdatomic.o
7172         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
7173     else
7174         enabled threads && die "Threading is enabled, but no atomics are available"
7175         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
7176     fi
7177 fi
7178
7179 # Check if requested libraries were found.
7180 for lib in $AUTODETECT_LIBS; do
7181     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
7182 done
7183
7184 enabled zlib && add_cppflags -DZLIB_CONST
7185
7186 # conditional library dependencies, in any order
7187 enabled afftdn_filter       && prepend avfilter_deps "avcodec"
7188 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
7189 enabled afir_filter         && prepend avfilter_deps "avcodec"
7190 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
7191 enabled aresample_filter    && prepend avfilter_deps "swresample"
7192 enabled atempo_filter       && prepend avfilter_deps "avcodec"
7193 enabled bm3d_filter         && prepend avfilter_deps "avcodec"
7194 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
7195 enabled convolve_filter     && prepend avfilter_deps "avcodec"
7196 enabled deconvolve_filter   && prepend avfilter_deps "avcodec"
7197 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
7198 enabled elbg_filter         && prepend avfilter_deps "avcodec"
7199 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
7200 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
7201 enabled firequalizer_filter && prepend avfilter_deps "avcodec"
7202 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
7203 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
7204 enabled pan_filter          && prepend avfilter_deps "swresample"
7205 enabled pp_filter           && prepend avfilter_deps "postproc"
7206 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
7207 enabled resample_filter && prepend avfilter_deps "avresample"
7208 enabled sab_filter          && prepend avfilter_deps "swscale"
7209 enabled scale_filter    && prepend avfilter_deps "swscale"
7210 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
7211 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
7212 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
7213 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
7214 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
7215 enabled signature_filter    && prepend avfilter_deps "avcodec avformat"
7216 enabled smartblur_filter    && prepend avfilter_deps "swscale"
7217 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
7218 enabled spp_filter          && prepend avfilter_deps "avcodec"
7219 enabled sr_filter           && prepend avfilter_deps "avformat swscale"
7220 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
7221 enabled uspp_filter         && prepend avfilter_deps "avcodec"
7222 enabled zoompan_filter      && prepend avfilter_deps "swscale"
7223
7224 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
7225
7226 #FIXME
7227 enabled_any sdl2_outdev opengl_outdev && enabled sdl2 &&
7228     add_cflags $(filter_out '-Dmain=SDL_main' $sdl2_cflags)
7229
7230 enabled opus_decoder    && prepend avcodec_deps "swresample"
7231
7232 # reorder the items at var $1 to align with the items order at var $2 .
7233 # die if an item at $1 is not at $2 .
7234 reorder_by(){
7235     eval rb_in=\$$1
7236     eval rb_ordered=\$$2
7237
7238     for rb in $rb_in; do
7239         is_in $rb $rb_ordered || die "$rb at \$$1 is not at \$$2"
7240     done
7241
7242     rb_out=
7243     for rb in $rb_ordered; do
7244         is_in $rb $rb_in && rb_out="$rb_out$rb "
7245     done
7246     eval $1=\$rb_out
7247 }
7248
7249 # deps-expand fflib $1:  N x {append all expanded deps; unique}
7250 # within a set of N items, N expansions are enough to expose a cycle.
7251 expand_deps(){
7252     unique ${1}_deps  # required for the early break test.
7253     for dummy in $LIBRARY_LIST; do  # N iteratios
7254         eval deps=\$${1}_deps
7255         append ${1}_deps $(map 'eval echo \$${v}_deps' $deps)
7256         unique ${1}_deps
7257         eval '[ ${#deps} = ${#'${1}_deps'} ]' && break  # doesn't expand anymore
7258     done
7259
7260     eval is_in $1 \$${1}_deps && die "Dependency cycle at ${1}_deps"
7261     reorder_by ${1}_deps LIBRARY_LIST  # linking order is expected later
7262 }
7263
7264 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
7265 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
7266
7267 map 'expand_deps $v' $LIBRARY_LIST
7268
7269 if test "$quiet" != "yes"; then
7270
7271 echo "install prefix            $prefix"
7272 echo "source path               $source_path"
7273 echo "C compiler                $cc"
7274 echo "C library                 $libc_type"
7275 if test "$host_cc" != "$cc"; then
7276     echo "host C compiler           $host_cc"
7277     echo "host C library            $host_libc_type"
7278 fi
7279 echo "ARCH                      $arch ($cpu)"
7280 if test "$build_suffix" != ""; then
7281     echo "build suffix              $build_suffix"
7282 fi
7283 if test "$progs_suffix" != ""; then
7284     echo "progs suffix              $progs_suffix"
7285 fi
7286 if test "$extra_version" != ""; then
7287     echo "version string suffix     $extra_version"
7288 fi
7289 echo "big-endian                ${bigendian-no}"
7290 echo "runtime cpu detection     ${runtime_cpudetect-no}"
7291 if enabled x86; then
7292     echo "standalone assembly       ${x86asm-no}"
7293     echo "x86 assembler             ${x86asmexe}"
7294     echo "MMX enabled               ${mmx-no}"
7295     echo "MMXEXT enabled            ${mmxext-no}"
7296     echo "3DNow! enabled            ${amd3dnow-no}"
7297     echo "3DNow! extended enabled   ${amd3dnowext-no}"
7298     echo "SSE enabled               ${sse-no}"
7299     echo "SSSE3 enabled             ${ssse3-no}"
7300     echo "AESNI enabled             ${aesni-no}"
7301     echo "AVX enabled               ${avx-no}"
7302     echo "AVX2 enabled              ${avx2-no}"
7303     echo "AVX-512 enabled           ${avx512-no}"
7304     echo "XOP enabled               ${xop-no}"
7305     echo "FMA3 enabled              ${fma3-no}"
7306     echo "FMA4 enabled              ${fma4-no}"
7307     echo "i686 features enabled     ${i686-no}"
7308     echo "CMOV is fast              ${fast_cmov-no}"
7309     echo "EBX available             ${ebx_available-no}"
7310     echo "EBP available             ${ebp_available-no}"
7311 fi
7312 if enabled aarch64; then
7313     echo "NEON enabled              ${neon-no}"
7314     echo "VFP enabled               ${vfp-no}"
7315 fi
7316 if enabled arm; then
7317     echo "ARMv5TE enabled           ${armv5te-no}"
7318     echo "ARMv6 enabled             ${armv6-no}"
7319     echo "ARMv6T2 enabled           ${armv6t2-no}"
7320     echo "VFP enabled               ${vfp-no}"
7321     echo "NEON enabled              ${neon-no}"
7322     echo "THUMB enabled             ${thumb-no}"
7323 fi
7324 if enabled mips; then
7325     echo "MIPS FPU enabled          ${mipsfpu-no}"
7326     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
7327     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
7328     echo "MIPS MSA enabled          ${msa-no}"
7329     echo "MIPS MSA2 enabled         ${msa2-no}"
7330     echo "LOONGSON MMI enabled      ${mmi-no}"
7331 fi
7332 if enabled ppc; then
7333     echo "AltiVec enabled           ${altivec-no}"
7334     echo "VSX enabled               ${vsx-no}"
7335     echo "POWER8 enabled            ${power8-no}"
7336     echo "PPC 4xx optimizations     ${ppc4xx-no}"
7337     echo "dcbzl available           ${dcbzl-no}"
7338 fi
7339 echo "debug symbols             ${debug-no}"
7340 echo "strip symbols             ${stripping-no}"
7341 echo "optimize for size         ${small-no}"
7342 echo "optimizations             ${optimizations-no}"
7343 echo "static                    ${static-no}"
7344 echo "shared                    ${shared-no}"
7345 echo "postprocessing support    ${postproc-no}"
7346 echo "network support           ${network-no}"
7347 echo "threading support         ${thread_type-no}"
7348 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
7349 echo "texi2html enabled         ${texi2html-no}"
7350 echo "perl enabled              ${perl-no}"
7351 echo "pod2man enabled           ${pod2man-no}"
7352 echo "makeinfo enabled          ${makeinfo-no}"
7353 echo "makeinfo supports HTML    ${makeinfo_html-no}"
7354 test -n "$random_seed" &&
7355     echo "random seed               ${random_seed}"
7356 echo
7357
7358 echo "External libraries:"
7359 print_enabled '' $EXTERNAL_LIBRARY_LIST $EXTERNAL_AUTODETECT_LIBRARY_LIST | print_in_columns
7360 echo
7361
7362 echo "External libraries providing hardware acceleration:"
7363 print_enabled '' $HWACCEL_LIBRARY_LIST $HWACCEL_AUTODETECT_LIBRARY_LIST | print_in_columns
7364 echo
7365
7366 echo "Libraries:"
7367 print_enabled '' $LIBRARY_LIST | print_in_columns
7368 echo
7369
7370 echo "Programs:"
7371 print_enabled '' $PROGRAM_LIST | print_in_columns
7372 echo
7373
7374 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
7375     echo "Enabled ${type}s:"
7376     eval list=\$$(toupper $type)_LIST
7377     print_enabled '_*' $list | print_in_columns
7378     echo
7379 done
7380
7381 if test -n "$ignore_tests"; then
7382     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
7383     echo "Ignored FATE tests:"
7384     echo $ignore_tests | print_in_columns
7385     echo
7386 fi
7387
7388 echo "License: $license"
7389
7390 fi # test "$quiet" != "yes"
7391
7392 if test -n "$WARN_IF_GETS_DISABLED_LIST"; then
7393     for cfg in $WARN_IF_GETS_DISABLED_LIST; do
7394         if disabled $cfg; then
7395             varname=${cfg}_disable_reason
7396             eval "warn \"Disabled $cfg because \$$varname\""
7397         fi
7398     done
7399 fi
7400
7401 if test -n "$WARNINGS"; then
7402     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
7403     enabled fatal_warnings && exit 1
7404 fi
7405
7406 test -e Makefile || echo "include $source_path/Makefile" > Makefile
7407
7408 esc(){
7409     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
7410 }
7411
7412 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" > ffbuild/config.fate
7413
7414 enabled stripping || strip="echo skipping strip"
7415 enabled stripping || striptype=""
7416
7417 config_files="$TMPH ffbuild/config.mak doc/config.texi"
7418
7419 cat > ffbuild/config.mak <<EOF
7420 # Automatically generated by configure - do not modify!
7421 ifndef FFMPEG_CONFIG_MAK
7422 FFMPEG_CONFIG_MAK=1
7423 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
7424 prefix=$prefix
7425 LIBDIR=\$(DESTDIR)$libdir
7426 SHLIBDIR=\$(DESTDIR)$shlibdir
7427 INCDIR=\$(DESTDIR)$incdir
7428 BINDIR=\$(DESTDIR)$bindir
7429 DATADIR=\$(DESTDIR)$datadir
7430 DOCDIR=\$(DESTDIR)$docdir
7431 MANDIR=\$(DESTDIR)$mandir
7432 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
7433 INSTALL_NAME_DIR=$install_name_dir
7434 SRC_PATH=$source_path
7435 SRC_LINK=$source_link
7436 ifndef MAIN_MAKEFILE
7437 SRC_PATH:=\$(SRC_PATH:.%=..%)
7438 endif
7439 CC_IDENT=$cc_ident
7440 ARCH=$arch
7441 INTRINSICS=$intrinsics
7442 EXTERN_PREFIX=$extern_prefix
7443 CC=$cc
7444 CXX=$cxx
7445 AS=$as
7446 OBJCC=$objcc
7447 LD=$ld
7448 DEPCC=$dep_cc
7449 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
7450 DEPAS=$as
7451 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
7452 X86ASM=$x86asmexe
7453 DEPX86ASM=$x86asmexe
7454 DEPX86ASMFLAGS=\$(X86ASMFLAGS)
7455 AR=$ar
7456 ARFLAGS=$arflags
7457 AR_O=$ar_o
7458 AR_CMD=$ar
7459 NM_CMD=$nm
7460 RANLIB=$ranlib
7461 STRIP=$strip
7462 STRIPTYPE=$striptype
7463 NVCC=$nvcc
7464 CP=cp -p
7465 LN_S=$ln_s
7466 CPPFLAGS=$CPPFLAGS
7467 CFLAGS=$CFLAGS
7468 CXXFLAGS=$CXXFLAGS
7469 OBJCFLAGS=$OBJCFLAGS
7470 ASFLAGS=$ASFLAGS
7471 NVCCFLAGS=$nvccflags
7472 AS_C=$AS_C
7473 AS_O=$AS_O
7474 OBJCC_C=$OBJCC_C
7475 OBJCC_E=$OBJCC_E
7476 OBJCC_O=$OBJCC_O
7477 CC_C=$CC_C
7478 CC_E=$CC_E
7479 CC_O=$CC_O
7480 CXX_C=$CXX_C
7481 CXX_O=$CXX_O
7482 NVCC_C=$NVCC_C
7483 NVCC_O=$NVCC_O
7484 LD_O=$LD_O
7485 X86ASM_O=$X86ASM_O
7486 LD_LIB=$LD_LIB
7487 LD_PATH=$LD_PATH
7488 DLLTOOL=$dlltool
7489 WINDRES=$windres
7490 DEPWINDRES=$dep_cc
7491 DOXYGEN=$doxygen
7492 LDFLAGS=$LDFLAGS
7493 LDEXEFLAGS=$LDEXEFLAGS
7494 LDSOFLAGS=$LDSOFLAGS
7495 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
7496 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
7497 X86ASMFLAGS=$X86ASMFLAGS
7498 MSAFLAGS=$MSAFLAGS
7499 MMIFLAGS=$MMIFLAGS
7500 BUILDSUF=$build_suffix
7501 PROGSSUF=$progs_suffix
7502 FULLNAME=$FULLNAME
7503 LIBPREF=$LIBPREF
7504 LIBSUF=$LIBSUF
7505 LIBNAME=$LIBNAME
7506 SLIBPREF=$SLIBPREF
7507 SLIBSUF=$SLIBSUF
7508 EXESUF=$EXESUF
7509 EXTRA_VERSION=$extra_version
7510 CCDEP=$CCDEP
7511 CXXDEP=$CXXDEP
7512 CCDEP_FLAGS=$CCDEP_FLAGS
7513 ASDEP=$ASDEP
7514 ASDEP_FLAGS=$ASDEP_FLAGS
7515 X86ASMDEP=$X86ASMDEP
7516 X86ASMDEP_FLAGS=$X86ASMDEP_FLAGS
7517 CC_DEPFLAGS=$CC_DEPFLAGS
7518 AS_DEPFLAGS=$AS_DEPFLAGS
7519 X86ASM_DEPFLAGS=$X86ASM_DEPFLAGS
7520 HOSTCC=$host_cc
7521 HOSTLD=$host_ld
7522 HOSTCFLAGS=$host_cflags
7523 HOSTCPPFLAGS=$host_cppflags
7524 HOSTEXESUF=$HOSTEXESUF
7525 HOSTLDFLAGS=$host_ldflags
7526 HOSTEXTRALIBS=$host_extralibs
7527 DEPHOSTCC=$host_cc
7528 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
7529 HOSTCCDEP=$HOSTCCDEP
7530 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
7531 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
7532 HOSTCC_C=$HOSTCC_C
7533 HOSTCC_O=$HOSTCC_O
7534 HOSTLD_O=$HOSTLD_O
7535 TARGET_EXEC=$target_exec $target_exec_args
7536 TARGET_PATH=$target_path
7537 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
7538 CFLAGS-ffplay=${sdl2_cflags}
7539 CFLAGS_HEADERS=$CFLAGS_HEADERS
7540 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
7541 EXTRALIBS=$extralibs
7542 COMPAT_OBJS=$compat_objs
7543 INSTALL=$install
7544 LIBTARGET=${LIBTARGET}
7545 SLIBNAME=${SLIBNAME}
7546 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
7547 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
7548 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
7549 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
7550 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
7551 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
7552 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
7553 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
7554 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
7555 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
7556 NOREDZONE_FLAGS=$noredzone_flags
7557 LIBFUZZER_PATH=$libfuzzer_path
7558 IGNORE_TESTS=$ignore_tests
7559 EOF
7560
7561 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> ffbuild/config.mak' $LIBRARY_LIST
7562
7563 for entry in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
7564     eval echo "EXTRALIBS-${entry}=\$${entry}_extralibs" >> ffbuild/config.mak
7565 done
7566
7567 cat > $TMPH <<EOF
7568 /* Automatically generated by configure - do not modify! */
7569 #ifndef FFMPEG_CONFIG_H
7570 #define FFMPEG_CONFIG_H
7571 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
7572 #define FFMPEG_LICENSE "$(c_escape $license)"
7573 #define CONFIG_THIS_YEAR 2020
7574 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
7575 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
7576 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
7577 #define av_restrict $restrict_keyword
7578 #define EXTERN_PREFIX "${extern_prefix}"
7579 #define EXTERN_ASM ${extern_prefix}
7580 #define BUILDSUF "$build_suffix"
7581 #define SLIBSUF "$SLIBSUF"
7582 #define HAVE_MMX2 HAVE_MMXEXT
7583 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
7584 EOF
7585
7586 test -n "$assert_level" &&
7587     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
7588
7589 test -n "$malloc_prefix" &&
7590     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
7591
7592 if enabled x86asm; then
7593     append config_files $TMPASM
7594     cat > $TMPASM <<EOF
7595 ; Automatically generated by configure - do not modify!
7596 EOF
7597 fi
7598
7599 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
7600
7601
7602 mkdir -p doc
7603 mkdir -p tests
7604 mkdir -p tests/api
7605 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
7606
7607 print_config ARCH_   "$config_files" $ARCH_LIST
7608 print_config HAVE_   "$config_files" $HAVE_LIST
7609 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
7610                                      $CONFIG_EXTRA      \
7611                                      $ALL_COMPONENTS    \
7612
7613 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
7614 echo "endif # FFMPEG_CONFIG_MAK" >> ffbuild/config.mak
7615
7616 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
7617 cp_if_changed $TMPH config.h
7618 touch ffbuild/.config
7619
7620 enabled x86asm && cp_if_changed $TMPASM config.asm
7621
7622 cat > $TMPH <<EOF
7623 /* Generated by ffmpeg configure */
7624 #ifndef AVUTIL_AVCONFIG_H
7625 #define AVUTIL_AVCONFIG_H
7626 EOF
7627
7628 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
7629
7630 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
7631
7632 cp_if_changed $TMPH libavutil/avconfig.h
7633
7634 # full_filter_name_foo=vf_foo
7635 # full_filter_name_bar=asrc_bar
7636 # ...
7637 eval "$(sed -n "s/^extern AVFilter ff_\([avfsinkrc]\{2,5\}\)_\(.*\);/full_filter_name_\2=\1_\2/p" $source_path/libavfilter/allfilters.c)"
7638
7639 # generate the lists of enabled components
7640 print_enabled_components(){
7641     file=$1
7642     struct_name=$2
7643     name=$3
7644     shift 3
7645     echo "static const $struct_name * const $name[] = {" > $TMPH
7646     for c in $*; do
7647         if enabled $c; then
7648             case $name in
7649                 filter_list)
7650                     eval c=\$full_filter_name_${c%_filter}
7651                 ;;
7652                 indev_list)
7653                     c=${c%_indev}_demuxer
7654                 ;;
7655                 outdev_list)
7656                     c=${c%_outdev}_muxer
7657                 ;;
7658             esac
7659             printf "    &ff_%s,\n" $c >> $TMPH
7660         fi
7661     done
7662     if [ "$name" = "filter_list" ]; then
7663         for c in asrc_abuffer vsrc_buffer asink_abuffer vsink_buffer; do
7664             printf "    &ff_%s,\n" $c >> $TMPH
7665         done
7666     fi
7667     echo "    NULL };" >> $TMPH
7668     cp_if_changed $TMPH $file
7669 }
7670
7671 print_enabled_components libavfilter/filter_list.c AVFilter filter_list $FILTER_LIST
7672 print_enabled_components libavcodec/codec_list.c AVCodec codec_list $CODEC_LIST
7673 print_enabled_components libavcodec/parser_list.c AVCodecParser parser_list $PARSER_LIST
7674 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
7675 print_enabled_components libavformat/demuxer_list.c AVInputFormat demuxer_list $DEMUXER_LIST
7676 print_enabled_components libavformat/muxer_list.c AVOutputFormat muxer_list $MUXER_LIST
7677 print_enabled_components libavdevice/indev_list.c AVInputFormat indev_list $INDEV_LIST
7678 print_enabled_components libavdevice/outdev_list.c AVOutputFormat outdev_list $OUTDEV_LIST
7679 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
7680
7681 # Settings for pkg-config files
7682
7683 cat > $TMPH <<EOF
7684 # Automatically generated by configure - do not modify!
7685 shared=$shared
7686 build_suffix=$build_suffix
7687 prefix=$prefix
7688 libdir=$libdir
7689 incdir=$incdir
7690 rpath=$(enabled rpath && echo "-Wl,-rpath,\${libdir}")
7691 source_path=${source_path}
7692 LIBPREF=${LIBPREF}
7693 LIBSUF=${LIBSUF}
7694 extralibs_avutil="$avutil_extralibs"
7695 extralibs_avcodec="$avcodec_extralibs"
7696 extralibs_avformat="$avformat_extralibs"
7697 extralibs_avdevice="$avdevice_extralibs"
7698 extralibs_avfilter="$avfilter_extralibs"
7699 extralibs_avresample="$avresample_extralibs"
7700 extralibs_postproc="$postproc_extralibs"
7701 extralibs_swscale="$swscale_extralibs"
7702 extralibs_swresample="$swresample_extralibs"
7703 EOF
7704
7705 for lib in $LIBRARY_LIST; do
7706     lib_deps="$(eval echo \$${lib}_deps)"
7707     echo ${lib}_deps=\"$lib_deps\" >> $TMPH
7708 done
7709
7710 cp_if_changed $TMPH ffbuild/config.sh