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-libwavpack will enable linking to
 194   libwavpack and allow the libwavpack encoder to be built, unless it is
 195   specifically disabled with --disable-encoder=libwavpack.
 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-libv4l2         enable libv4l2/v4l-utils [no]
 281   --enable-libvidstab      enable video stabilization using vid.stab [no]
 282   --enable-libvmaf         enable vmaf filter via libvmaf [no]
 283   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 284   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 285                            native implementation exists [no]
 286   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 287   --enable-libwavpack      enable wavpack encoding via libwavpack [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     libv4l2
1815     libvmaf
1816     libvorbis
1817     libvpx
1818     libwavpack
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 error_resilience_select="me_cmp"
2632 faandct_deps="faan"
2633 faandct_select="fdctdsp"
2634 faanidct_deps="faan"
2635 faanidct_select="idctdsp"
2636 h264dsp_select="startcode"
2637 hevcparse_select="golomb"
2638 frame_thread_encoder_deps="encoders threads"
2639 intrax8_select="blockdsp idctdsp"
2640 mdct_select="fft"
2641 mdct15_select="fft"
2642 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2643 mpeg_er_select="error_resilience"
2644 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2645 mpegaudiodsp_select="dct"
2646 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2647 mpegvideoenc_select="aandcttables me_cmp mpegvideo pixblockdsp qpeldsp"
2648 vc1dsp_select="h264chroma qpeldsp startcode"
2649 rdft_select="fft"
2650
2651 # decoders / encoders
2652 aac_decoder_select="adts_header mdct15 mdct sinewin"
2653 aac_fixed_decoder_select="adts_header mdct sinewin"
2654 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2655 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2656 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2657 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2658 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2659 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2660 acelp_kelvin_decoder_select="audiodsp"
2661 adpcm_g722_decoder_select="g722dsp"
2662 adpcm_g722_encoder_select="g722dsp"
2663 aic_decoder_select="golomb idctdsp"
2664 alac_encoder_select="lpc"
2665 als_decoder_select="bswapdsp"
2666 amrnb_decoder_select="lsp"
2667 amrwb_decoder_select="lsp"
2668 amv_decoder_select="sp5x_decoder exif"
2669 amv_encoder_select="jpegtables mpegvideoenc"
2670 ape_decoder_select="bswapdsp llauddsp"
2671 apng_decoder_deps="zlib"
2672 apng_encoder_deps="zlib"
2673 apng_encoder_select="llvidencdsp"
2674 aptx_decoder_select="audio_frame_queue"
2675 aptx_encoder_select="audio_frame_queue"
2676 aptx_hd_decoder_select="audio_frame_queue"
2677 aptx_hd_encoder_select="audio_frame_queue"
2678 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2679 asv1_encoder_select="aandcttables bswapdsp fdctdsp pixblockdsp"
2680 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2681 asv2_encoder_select="aandcttables bswapdsp fdctdsp pixblockdsp"
2682 atrac1_decoder_select="mdct sinewin"
2683 atrac3_decoder_select="mdct"
2684 atrac3al_decoder_select="mdct"
2685 atrac3p_decoder_select="mdct sinewin"
2686 atrac3pal_decoder_select="mdct sinewin"
2687 atrac9_decoder_select="mdct"
2688 avrn_decoder_select="exif jpegtables"
2689 bink_decoder_select="blockdsp hpeldsp"
2690 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2691 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2692 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2693 clearvideo_decoder_select="idctdsp"
2694 cllc_decoder_select="bswapdsp"
2695 comfortnoise_encoder_select="lpc"
2696 cook_decoder_select="audiodsp mdct sinewin"
2697 cscd_decoder_select="lzo"
2698 cscd_decoder_suggest="zlib"
2699 dca_decoder_select="mdct"
2700 dca_encoder_select="mdct"
2701 dds_decoder_select="texturedsp"
2702 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2703 dnxhd_decoder_select="blockdsp idctdsp"
2704 dnxhd_encoder_select="blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2705 dolby_e_decoder_select="mdct"
2706 dvvideo_decoder_select="dvprofile idctdsp"
2707 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2708 dxa_decoder_deps="zlib"
2709 dxv_decoder_select="lzf texturedsp"
2710 eac3_decoder_select="ac3_decoder"
2711 eac3_encoder_select="ac3_encoder"
2712 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2713 eatgq_decoder_select="aandcttables"
2714 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2715 exr_decoder_deps="zlib"
2716 ffv1_decoder_select="rangecoder"
2717 ffv1_encoder_select="rangecoder"
2718 ffvhuff_decoder_select="huffyuv_decoder"
2719 ffvhuff_encoder_select="huffyuv_encoder"
2720 fic_decoder_select="golomb"
2721 flac_decoder_select="flacdsp"
2722 flac_encoder_select="bswapdsp flacdsp lpc"
2723 flashsv2_decoder_deps="zlib"
2724 flashsv2_encoder_deps="zlib"
2725 flashsv_decoder_deps="zlib"
2726 flashsv_encoder_deps="zlib"
2727 flv_decoder_select="h263_decoder"
2728 flv_encoder_select="h263_encoder"
2729 fourxm_decoder_select="blockdsp bswapdsp"
2730 fraps_decoder_select="bswapdsp huffman"
2731 g2m_decoder_deps="zlib"
2732 g2m_decoder_select="blockdsp idctdsp jpegtables"
2733 g729_decoder_select="audiodsp"
2734 h261_decoder_select="mpegvideo"
2735 h261_encoder_select="mpegvideoenc"
2736 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2737 h263_encoder_select="h263dsp mpegvideoenc"
2738 h263i_decoder_select="h263_decoder"
2739 h263p_decoder_select="h263_decoder"
2740 h263p_encoder_select="h263_encoder"
2741 h264_decoder_select="atsc_a53 cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2742 h264_decoder_suggest="error_resilience"
2743 hap_decoder_select="snappy texturedsp"
2744 hap_encoder_deps="libsnappy"
2745 hap_encoder_select="texturedspenc"
2746 hevc_decoder_select="atsc_a53 bswapdsp cabac golomb hevcparse videodsp"
2747 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2748 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2749 hymt_decoder_select="huffyuv_decoder"
2750 iac_decoder_select="imc_decoder"
2751 imc_decoder_select="bswapdsp fft mdct sinewin"
2752 imm4_decoder_select="bswapdsp"
2753 imm5_decoder_select="h264_decoder hevc_decoder"
2754 indeo3_decoder_select="hpeldsp"
2755 indeo4_decoder_select="ividsp"
2756 indeo5_decoder_select="ividsp"
2757 interplay_video_decoder_select="hpeldsp"
2758 jpegls_decoder_select="mjpeg_decoder"
2759 jv_decoder_select="blockdsp"
2760 lagarith_decoder_select="llviddsp"
2761 ljpeg_encoder_select="idctdsp jpegtables mpegvideoenc"
2762 lscr_decoder_deps="zlib"
2763 magicyuv_decoder_select="llviddsp"
2764 magicyuv_encoder_select="llvidencdsp"
2765 mdec_decoder_select="blockdsp bswapdsp idctdsp mpegvideo"
2766 metasound_decoder_select="lsp mdct sinewin"
2767 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2768 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2769 mjpeg_encoder_select="jpegtables mpegvideoenc"
2770 mjpegb_decoder_select="mjpeg_decoder"
2771 mlp_decoder_select="mlp_parser"
2772 mlp_encoder_select="lpc audio_frame_queue"
2773 mobiclip_decoder_select="bswapdsp golomb"
2774 motionpixels_decoder_select="bswapdsp"
2775 mp1_decoder_select="mpegaudio"
2776 mp1float_decoder_select="mpegaudio"
2777 mp2_decoder_select="mpegaudio"
2778 mp2float_decoder_select="mpegaudio"
2779 mp3_decoder_select="mpegaudio"
2780 mp3adu_decoder_select="mpegaudio"
2781 mp3adufloat_decoder_select="mpegaudio"
2782 mp3float_decoder_select="mpegaudio"
2783 mp3on4_decoder_select="mpegaudio"
2784 mp3on4float_decoder_select="mpegaudio"
2785 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2786 mpc8_decoder_select="mpegaudiodsp"
2787 mpegvideo_decoder_select="mpegvideo"
2788 mpeg1video_decoder_select="mpegvideo"
2789 mpeg1video_encoder_select="mpegvideoenc h263dsp"
2790 mpeg2video_decoder_select="mpegvideo"
2791 mpeg2video_encoder_select="mpegvideoenc h263dsp"
2792 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2793 mpeg4_encoder_select="h263_encoder"
2794 msa1_decoder_select="mss34dsp"
2795 mscc_decoder_deps="zlib"
2796 msmpeg4v1_decoder_select="h263_decoder"
2797 msmpeg4v2_decoder_select="h263_decoder"
2798 msmpeg4v2_encoder_select="h263_encoder"
2799 msmpeg4v3_decoder_select="h263_decoder"
2800 msmpeg4v3_encoder_select="h263_encoder"
2801 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2802 mts2_decoder_select="mss34dsp"
2803 mv30_decoder_select="aandcttables blockdsp"
2804 mvha_decoder_deps="zlib"
2805 mvha_decoder_select="llviddsp"
2806 mwsc_decoder_deps="zlib"
2807 mxpeg_decoder_select="mjpeg_decoder"
2808 nellymoser_decoder_select="mdct sinewin"
2809 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2810 notchlc_decoder_select="lzf"
2811 nuv_decoder_select="idctdsp lzo"
2812 on2avc_decoder_select="mdct"
2813 opus_decoder_deps="swresample"
2814 opus_decoder_select="mdct15"
2815 opus_encoder_select="audio_frame_queue mdct15"
2816 png_decoder_deps="zlib"
2817 png_encoder_deps="zlib"
2818 png_encoder_select="llvidencdsp"
2819 prores_decoder_select="blockdsp idctdsp"
2820 prores_encoder_select="fdctdsp"
2821 qcelp_decoder_select="lsp"
2822 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2823 ra_144_decoder_select="audiodsp"
2824 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2825 ralf_decoder_select="golomb"
2826 rasc_decoder_deps="zlib"
2827 rawvideo_decoder_select="bswapdsp"
2828 rscc_decoder_deps="zlib"
2829 rtjpeg_decoder_select="me_cmp"
2830 rv10_decoder_select="h263_decoder"
2831 rv10_encoder_select="h263_encoder"
2832 rv20_decoder_select="h263_decoder"
2833 rv20_encoder_select="h263_encoder"
2834 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2835 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2836 screenpresso_decoder_deps="zlib"
2837 shorten_decoder_select="bswapdsp"
2838 sipr_decoder_select="lsp"
2839 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2840 snow_encoder_select="dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2841 sonic_decoder_select="golomb rangecoder"
2842 sonic_encoder_select="golomb rangecoder"
2843 sonic_ls_encoder_select="golomb rangecoder"
2844 sp5x_decoder_select="mjpeg_decoder"
2845 speedhq_decoder_select="mpegvideo"
2846 srgc_decoder_deps="zlib"
2847 svq1_decoder_select="hpeldsp"
2848 svq1_encoder_select="hpeldsp me_cmp mpegvideoenc"
2849 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2850 svq3_decoder_suggest="zlib"
2851 tak_decoder_select="audiodsp"
2852 tdsc_decoder_deps="zlib"
2853 tdsc_decoder_select="mjpeg_decoder"
2854 theora_decoder_select="vp3_decoder"
2855 thp_decoder_select="mjpeg_decoder"
2856 tiff_decoder_select="mjpeg_decoder"
2857 tiff_decoder_suggest="zlib lzma"
2858 tiff_encoder_suggest="zlib"
2859 truehd_decoder_select="mlp_parser"
2860 truehd_encoder_select="lpc audio_frame_queue"
2861 truemotion2_decoder_select="bswapdsp"
2862 truespeech_decoder_select="bswapdsp"
2863 tscc_decoder_deps="zlib"
2864 twinvq_decoder_select="mdct lsp sinewin"
2865 txd_decoder_select="texturedsp"
2866 utvideo_decoder_select="bswapdsp llviddsp"
2867 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2868 vble_decoder_select="llviddsp"
2869 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2870 vc1image_decoder_select="vc1_decoder"
2871 vorbis_decoder_select="mdct"
2872 vorbis_encoder_select="audio_frame_queue mdct"
2873 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2874 vp4_decoder_select="vp3_decoder"
2875 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2876 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2877 vp6a_decoder_select="vp6_decoder"
2878 vp6f_decoder_select="vp6_decoder"
2879 vp7_decoder_select="h264pred videodsp vp8dsp"
2880 vp8_decoder_select="h264pred videodsp vp8dsp"
2881 vp9_decoder_select="videodsp vp9_parser vp9_superframe_split_bsf"
2882 wcmv_decoder_deps="zlib"
2883 webp_decoder_select="vp8_decoder exif"
2884 wmalossless_decoder_select="llauddsp"
2885 wmapro_decoder_select="mdct sinewin wma_freqs"
2886 wmav1_decoder_select="mdct sinewin wma_freqs"
2887 wmav1_encoder_select="mdct sinewin wma_freqs"
2888 wmav2_decoder_select="mdct sinewin wma_freqs"
2889 wmav2_encoder_select="mdct sinewin wma_freqs"
2890 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2891 wmv1_decoder_select="h263_decoder"
2892 wmv1_encoder_select="h263_encoder"
2893 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2894 wmv2_encoder_select="h263_encoder wmv2dsp"
2895 wmv3_decoder_select="vc1_decoder"
2896 wmv3image_decoder_select="wmv3_decoder"
2897 xma1_decoder_select="wmapro_decoder"
2898 xma2_decoder_select="wmapro_decoder"
2899 ylc_decoder_select="bswapdsp"
2900 zerocodec_decoder_deps="zlib"
2901 zlib_decoder_deps="zlib"
2902 zlib_encoder_deps="zlib"
2903 zmbv_decoder_deps="zlib"
2904 zmbv_encoder_deps="zlib"
2905
2906 # hardware accelerators
2907 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2908 cuda_deps="ffnvcodec"
2909 cuvid_deps="ffnvcodec"
2910 d3d11va_deps="dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2911 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32 user32"
2912 ffnvcodec_deps_any="libdl LoadLibrary"
2913 nvdec_deps="ffnvcodec"
2914 vaapi_x11_deps="xlib"
2915 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2916 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2917 xvmc_deps="X11_extensions_XvMClib_h"
2918
2919 h263_vaapi_hwaccel_deps="vaapi"
2920 h263_vaapi_hwaccel_select="h263_decoder"
2921 h263_videotoolbox_hwaccel_deps="videotoolbox"
2922 h263_videotoolbox_hwaccel_select="h263_decoder"
2923 h264_d3d11va_hwaccel_deps="d3d11va"
2924 h264_d3d11va_hwaccel_select="h264_decoder"
2925 h264_d3d11va2_hwaccel_deps="d3d11va"
2926 h264_d3d11va2_hwaccel_select="h264_decoder"
2927 h264_dxva2_hwaccel_deps="dxva2"
2928 h264_dxva2_hwaccel_select="h264_decoder"
2929 h264_nvdec_hwaccel_deps="nvdec"
2930 h264_nvdec_hwaccel_select="h264_decoder"
2931 h264_vaapi_hwaccel_deps="vaapi"
2932 h264_vaapi_hwaccel_select="h264_decoder"
2933 h264_vdpau_hwaccel_deps="vdpau"
2934 h264_vdpau_hwaccel_select="h264_decoder"
2935 h264_videotoolbox_hwaccel_deps="videotoolbox"
2936 h264_videotoolbox_hwaccel_select="h264_decoder"
2937 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2938 hevc_d3d11va_hwaccel_select="hevc_decoder"
2939 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2940 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2941 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2942 hevc_dxva2_hwaccel_select="hevc_decoder"
2943 hevc_nvdec_hwaccel_deps="nvdec"
2944 hevc_nvdec_hwaccel_select="hevc_decoder"
2945 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2946 hevc_vaapi_hwaccel_select="hevc_decoder"
2947 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2948 hevc_vdpau_hwaccel_select="hevc_decoder"
2949 hevc_videotoolbox_hwaccel_deps="videotoolbox"
2950 hevc_videotoolbox_hwaccel_select="hevc_decoder"
2951 mjpeg_nvdec_hwaccel_deps="nvdec"
2952 mjpeg_nvdec_hwaccel_select="mjpeg_decoder"
2953 mjpeg_vaapi_hwaccel_deps="vaapi"
2954 mjpeg_vaapi_hwaccel_select="mjpeg_decoder"
2955 mpeg_xvmc_hwaccel_deps="xvmc"
2956 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2957 mpeg1_nvdec_hwaccel_deps="nvdec"
2958 mpeg1_nvdec_hwaccel_select="mpeg1video_decoder"
2959 mpeg1_vdpau_hwaccel_deps="vdpau"
2960 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2961 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2962 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2963 mpeg1_xvmc_hwaccel_deps="xvmc"
2964 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2965 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2966 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2967 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2968 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2969 mpeg2_dxva2_hwaccel_deps="dxva2"
2970 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2971 mpeg2_nvdec_hwaccel_deps="nvdec"
2972 mpeg2_nvdec_hwaccel_select="mpeg2video_decoder"
2973 mpeg2_vaapi_hwaccel_deps="vaapi"
2974 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2975 mpeg2_vdpau_hwaccel_deps="vdpau"
2976 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2977 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2978 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2979 mpeg2_xvmc_hwaccel_deps="xvmc"
2980 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2981 mpeg4_nvdec_hwaccel_deps="nvdec"
2982 mpeg4_nvdec_hwaccel_select="mpeg4_decoder"
2983 mpeg4_vaapi_hwaccel_deps="vaapi"
2984 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2985 mpeg4_vdpau_hwaccel_deps="vdpau"
2986 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2987 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2988 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2989 vc1_d3d11va_hwaccel_deps="d3d11va"
2990 vc1_d3d11va_hwaccel_select="vc1_decoder"
2991 vc1_d3d11va2_hwaccel_deps="d3d11va"
2992 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2993 vc1_dxva2_hwaccel_deps="dxva2"
2994 vc1_dxva2_hwaccel_select="vc1_decoder"
2995 vc1_nvdec_hwaccel_deps="nvdec"
2996 vc1_nvdec_hwaccel_select="vc1_decoder"
2997 vc1_vaapi_hwaccel_deps="vaapi"
2998 vc1_vaapi_hwaccel_select="vc1_decoder"
2999 vc1_vdpau_hwaccel_deps="vdpau"
3000 vc1_vdpau_hwaccel_select="vc1_decoder"
3001 vp8_nvdec_hwaccel_deps="nvdec"
3002 vp8_nvdec_hwaccel_select="vp8_decoder"
3003 vp8_vaapi_hwaccel_deps="vaapi"
3004 vp8_vaapi_hwaccel_select="vp8_decoder"
3005 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
3006 vp9_d3d11va_hwaccel_select="vp9_decoder"
3007 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
3008 vp9_d3d11va2_hwaccel_select="vp9_decoder"
3009 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
3010 vp9_dxva2_hwaccel_select="vp9_decoder"
3011 vp9_nvdec_hwaccel_deps="nvdec"
3012 vp9_nvdec_hwaccel_select="vp9_decoder"
3013 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
3014 vp9_vaapi_hwaccel_select="vp9_decoder"
3015 vp9_vdpau_hwaccel_deps="vdpau VdpPictureInfoVP9"
3016 vp9_vdpau_hwaccel_select="vp9_decoder"
3017 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
3018 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
3019 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
3020 wmv3_nvdec_hwaccel_select="vc1_nvdec_hwaccel"
3021 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
3022 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
3023
3024 # hardware-accelerated codecs
3025 mediafoundation_deps="mftransform_h MFCreateAlignedMemoryBuffer"
3026 mediafoundation_extralibs="-lmfplat -lmfuuid -lole32 -lstrmiids"
3027 omx_deps="libdl pthreads"
3028 omx_rpi_select="omx"
3029 qsv_deps="libmfx"
3030 qsvdec_select="qsv"
3031 qsvenc_select="qsv"
3032 qsvvpp_select="qsv"
3033 vaapi_encode_deps="vaapi"
3034 v4l2_m2m_deps="linux_videodev2_h sem_timedwait"
3035
3036 hwupload_cuda_filter_deps="ffnvcodec"
3037 scale_npp_filter_deps="ffnvcodec libnpp"
3038 scale_cuda_filter_deps="ffnvcodec"
3039 scale_cuda_filter_deps_any="cuda_nvcc cuda_llvm"
3040 thumbnail_cuda_filter_deps="ffnvcodec"
3041 thumbnail_cuda_filter_deps_any="cuda_nvcc cuda_llvm"
3042 transpose_npp_filter_deps="ffnvcodec libnpp"
3043 overlay_cuda_filter_deps="ffnvcodec"
3044 overlay_cuda_filter_deps_any="cuda_nvcc cuda_llvm"
3045
3046 amf_deps_any="libdl LoadLibrary"
3047 nvenc_deps="ffnvcodec"
3048 nvenc_deps_any="libdl LoadLibrary"
3049 nvenc_encoder_deps="nvenc"
3050
3051 aac_mf_encoder_deps="mediafoundation"
3052 ac3_mf_encoder_deps="mediafoundation"
3053 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
3054 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
3055 h264_amf_encoder_deps="amf"
3056 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
3057 h264_cuvid_decoder_deps="cuvid"
3058 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
3059 h264_mediacodec_decoder_deps="mediacodec"
3060 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
3061 h264_mf_encoder_deps="mediafoundation"
3062 h264_mmal_decoder_deps="mmal"
3063 h264_nvenc_encoder_deps="nvenc"
3064 h264_nvenc_encoder_select="atsc_a53"
3065 h264_omx_encoder_deps="omx"
3066 h264_qsv_decoder_select="h264_mp4toannexb_bsf qsvdec"
3067 h264_qsv_encoder_select="atsc_a53 qsvenc"
3068 h264_rkmpp_decoder_deps="rkmpp"
3069 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
3070 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
3071 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
3072 h264_v4l2m2m_decoder_select="h264_mp4toannexb_bsf"
3073 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
3074 hevc_amf_encoder_deps="amf"
3075 hevc_cuvid_decoder_deps="cuvid"
3076 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
3077 hevc_mediacodec_decoder_deps="mediacodec"
3078 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
3079 hevc_mf_encoder_deps="mediafoundation"
3080 hevc_nvenc_encoder_deps="nvenc"
3081 hevc_nvenc_encoder_select="atsc_a53"
3082 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf qsvdec"
3083 hevc_qsv_encoder_select="hevcparse qsvenc"
3084 hevc_rkmpp_decoder_deps="rkmpp"
3085 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
3086 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
3087 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
3088 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
3089 hevc_v4l2m2m_decoder_select="hevc_mp4toannexb_bsf"
3090 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
3091 mjpeg_cuvid_decoder_deps="cuvid"
3092 mjpeg_qsv_decoder_select="qsvdec"
3093 mjpeg_qsv_encoder_deps="libmfx"
3094 mjpeg_qsv_encoder_select="qsvenc"
3095 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
3096 mjpeg_vaapi_encoder_select="cbs_jpeg jpegtables vaapi_encode"
3097 mp3_mf_encoder_deps="mediafoundation"
3098 mpeg1_cuvid_decoder_deps="cuvid"
3099 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
3100 mpeg2_crystalhd_decoder_select="crystalhd"
3101 mpeg2_cuvid_decoder_deps="cuvid"
3102 mpeg2_mmal_decoder_deps="mmal"
3103 mpeg2_mediacodec_decoder_deps="mediacodec"
3104 mpeg2_qsv_decoder_select="qsvdec"
3105 mpeg2_qsv_encoder_select="qsvenc"
3106 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
3107 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
3108 mpeg4_crystalhd_decoder_select="crystalhd"
3109 mpeg4_cuvid_decoder_deps="cuvid"
3110 mpeg4_mediacodec_decoder_deps="mediacodec"
3111 mpeg4_mmal_decoder_deps="mmal"
3112 mpeg4_omx_encoder_deps="omx"
3113 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
3114 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
3115 msmpeg4_crystalhd_decoder_select="crystalhd"
3116 nvenc_h264_encoder_select="h264_nvenc_encoder"
3117 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
3118 vc1_crystalhd_decoder_select="crystalhd"
3119 vc1_cuvid_decoder_deps="cuvid"
3120 vc1_mmal_decoder_deps="mmal"
3121 vc1_qsv_decoder_select="qsvdec"
3122 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
3123 vp8_cuvid_decoder_deps="cuvid"
3124 vp8_mediacodec_decoder_deps="mediacodec"
3125 vp8_qsv_decoder_select="qsvdec"
3126 vp8_rkmpp_decoder_deps="rkmpp"
3127 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
3128 vp8_vaapi_encoder_select="vaapi_encode"
3129 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
3130 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
3131 vp9_cuvid_decoder_deps="cuvid"
3132 vp9_mediacodec_decoder_deps="mediacodec"
3133 vp9_qsv_decoder_select="qsvdec"
3134 vp9_rkmpp_decoder_deps="rkmpp"
3135 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
3136 vp9_vaapi_encoder_select="vaapi_encode"
3137 vp9_qsv_encoder_deps="libmfx MFX_CODEC_VP9"
3138 vp9_qsv_encoder_select="qsvenc"
3139 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
3140 wmv3_crystalhd_decoder_select="crystalhd"
3141
3142 # parsers
3143 aac_parser_select="adts_header"
3144 av1_parser_select="cbs_av1"
3145 h264_parser_select="golomb h264dsp h264parse"
3146 hevc_parser_select="hevcparse"
3147 mpegaudio_parser_select="mpegaudioheader"
3148 mpegvideo_parser_select="mpegvideo"
3149 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
3150 vc1_parser_select="vc1dsp"
3151
3152 # bitstream_filters
3153 aac_adtstoasc_bsf_select="adts_header"
3154 av1_frame_merge_bsf_select="cbs_av1"
3155 av1_frame_split_bsf_select="cbs_av1"
3156 av1_metadata_bsf_select="cbs_av1"
3157 eac3_core_bsf_select="ac3_parser"
3158 filter_units_bsf_select="cbs"
3159 h264_metadata_bsf_deps="const_nan"
3160 h264_metadata_bsf_select="cbs_h264"
3161 h264_redundant_pps_bsf_select="cbs_h264"
3162 hevc_metadata_bsf_select="cbs_h265"
3163 mjpeg2jpeg_bsf_select="jpegtables"
3164 mpeg2_metadata_bsf_select="cbs_mpeg2"
3165 trace_headers_bsf_select="cbs"
3166 vp9_metadata_bsf_select="cbs_vp9"
3167
3168 # external libraries
3169 aac_at_decoder_deps="audiotoolbox"
3170 aac_at_decoder_select="aac_adtstoasc_bsf"
3171 ac3_at_decoder_deps="audiotoolbox"
3172 ac3_at_decoder_select="ac3_parser"
3173 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
3174 alac_at_decoder_deps="audiotoolbox"
3175 amr_nb_at_decoder_deps="audiotoolbox"
3176 avisynth_deps_any="libdl LoadLibrary"
3177 avisynth_demuxer_deps="avisynth"
3178 avisynth_demuxer_select="riffdec"
3179 eac3_at_decoder_deps="audiotoolbox"
3180 eac3_at_decoder_select="ac3_parser"
3181 gsm_ms_at_decoder_deps="audiotoolbox"
3182 ilbc_at_decoder_deps="audiotoolbox"
3183 mp1_at_decoder_deps="audiotoolbox"
3184 mp2_at_decoder_deps="audiotoolbox"
3185 mp3_at_decoder_deps="audiotoolbox"
3186 mp1_at_decoder_select="mpegaudioheader"
3187 mp2_at_decoder_select="mpegaudioheader"
3188 mp3_at_decoder_select="mpegaudioheader"
3189 pcm_alaw_at_decoder_deps="audiotoolbox"
3190 pcm_mulaw_at_decoder_deps="audiotoolbox"
3191 qdmc_decoder_select="fft"
3192 qdmc_at_decoder_deps="audiotoolbox"
3193 qdm2_at_decoder_deps="audiotoolbox"
3194 aac_at_encoder_deps="audiotoolbox"
3195 aac_at_encoder_select="audio_frame_queue"
3196 alac_at_encoder_deps="audiotoolbox"
3197 alac_at_encoder_select="audio_frame_queue"
3198 ilbc_at_encoder_deps="audiotoolbox"
3199 ilbc_at_encoder_select="audio_frame_queue"
3200 pcm_alaw_at_encoder_deps="audiotoolbox"
3201 pcm_alaw_at_encoder_select="audio_frame_queue"
3202 pcm_mulaw_at_encoder_deps="audiotoolbox"
3203 pcm_mulaw_at_encoder_select="audio_frame_queue"
3204 chromaprint_muxer_deps="chromaprint"
3205 h264_videotoolbox_encoder_deps="pthreads"
3206 h264_videotoolbox_encoder_select="atsc_a53 videotoolbox_encoder"
3207 hevc_videotoolbox_encoder_deps="pthreads"
3208 hevc_videotoolbox_encoder_select="atsc_a53 videotoolbox_encoder"
3209 libaom_av1_decoder_deps="libaom"
3210 libaom_av1_encoder_deps="libaom"
3211 libaom_av1_encoder_select="extract_extradata_bsf"
3212 libaribb24_decoder_deps="libaribb24"
3213 libcelt_decoder_deps="libcelt"
3214 libcodec2_decoder_deps="libcodec2"
3215 libcodec2_encoder_deps="libcodec2"
3216 libdav1d_decoder_deps="libdav1d"
3217 libdav1d_decoder_select="atsc_a53"
3218 libdavs2_decoder_deps="libdavs2"
3219 libfdk_aac_decoder_deps="libfdk_aac"
3220 libfdk_aac_encoder_deps="libfdk_aac"
3221 libfdk_aac_encoder_select="audio_frame_queue"
3222 libgme_demuxer_deps="libgme"
3223 libgsm_decoder_deps="libgsm"
3224 libgsm_encoder_deps="libgsm"
3225 libgsm_ms_decoder_deps="libgsm"
3226 libgsm_ms_encoder_deps="libgsm"
3227 libilbc_decoder_deps="libilbc"
3228 libilbc_encoder_deps="libilbc"
3229 libkvazaar_encoder_deps="libkvazaar"
3230 libmodplug_demuxer_deps="libmodplug"
3231 libmp3lame_encoder_deps="libmp3lame"
3232 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
3233 libopencore_amrnb_decoder_deps="libopencore_amrnb"
3234 libopencore_amrnb_encoder_deps="libopencore_amrnb"
3235 libopencore_amrnb_encoder_select="audio_frame_queue"
3236 libopencore_amrwb_decoder_deps="libopencore_amrwb"
3237 libopenh264_decoder_deps="libopenh264"
3238 libopenh264_decoder_select="h264_mp4toannexb_bsf"
3239 libopenh264_encoder_deps="libopenh264"
3240 libopenjpeg_decoder_deps="libopenjpeg"
3241 libopenjpeg_encoder_deps="libopenjpeg"
3242 libopenmpt_demuxer_deps="libopenmpt"
3243 libopus_decoder_deps="libopus"
3244 libopus_encoder_deps="libopus"
3245 libopus_encoder_select="audio_frame_queue"
3246 librav1e_encoder_deps="librav1e"
3247 librav1e_encoder_select="extract_extradata_bsf"
3248 librsvg_decoder_deps="librsvg"
3249 libshine_encoder_deps="libshine"
3250 libshine_encoder_select="audio_frame_queue"
3251 libspeex_decoder_deps="libspeex"
3252 libspeex_encoder_deps="libspeex"
3253 libspeex_encoder_select="audio_frame_queue"
3254 libsvtav1_encoder_deps="libsvtav1"
3255 libtheora_encoder_deps="libtheora"
3256 libtwolame_encoder_deps="libtwolame"
3257 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
3258 libvorbis_decoder_deps="libvorbis"
3259 libvorbis_encoder_deps="libvorbis libvorbisenc"
3260 libvorbis_encoder_select="audio_frame_queue"
3261 libvpx_vp8_decoder_deps="libvpx"
3262 libvpx_vp8_encoder_deps="libvpx"
3263 libvpx_vp9_decoder_deps="libvpx"
3264 libvpx_vp9_encoder_deps="libvpx"
3265 libwavpack_encoder_deps="libwavpack"
3266 libwavpack_encoder_select="audio_frame_queue"
3267 libwebp_encoder_deps="libwebp"
3268 libwebp_anim_encoder_deps="libwebp"
3269 libx262_encoder_deps="libx262"
3270 libx264_encoder_deps="libx264"
3271 libx264_encoder_select="atsc_a53"
3272 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
3273 libx264rgb_encoder_select="libx264_encoder"
3274 libx265_encoder_deps="libx265"
3275 libxavs_encoder_deps="libxavs"
3276 libxavs2_encoder_deps="libxavs2"
3277 libxvid_encoder_deps="libxvid"
3278 libzvbi_teletext_decoder_deps="libzvbi"
3279 vapoursynth_demuxer_deps="vapoursynth"
3280 videotoolbox_suggest="coreservices"
3281 videotoolbox_deps="corefoundation coremedia corevideo"
3282 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
3283
3284 # demuxers / muxers
3285 ac3_demuxer_select="ac3_parser"
3286 act_demuxer_select="riffdec"
3287 aiff_muxer_select="iso_media"
3288 asf_demuxer_select="riffdec"
3289 asf_o_demuxer_select="riffdec"
3290 asf_muxer_select="riffenc"
3291 asf_stream_muxer_select="asf_muxer"
3292 av1_demuxer_select="av1_frame_merge_bsf av1_parser"
3293 avi_demuxer_select="iso_media riffdec exif"
3294 avi_muxer_select="riffenc"
3295 caf_demuxer_select="iso_media riffdec"
3296 caf_muxer_select="iso_media"
3297 dash_muxer_select="mp4_muxer"
3298 dash_demuxer_deps="libxml2"
3299 dirac_demuxer_select="dirac_parser"
3300 dts_demuxer_select="dca_parser"
3301 dtshd_demuxer_select="dca_parser"
3302 dv_demuxer_select="dvprofile"
3303 dv_muxer_select="dvprofile"
3304 dxa_demuxer_select="riffdec"
3305 eac3_demuxer_select="ac3_parser"
3306 f4v_muxer_select="mov_muxer"
3307 fifo_muxer_deps="threads"
3308 flac_demuxer_select="flac_parser"
3309 flv_muxer_select="aac_adtstoasc_bsf"
3310 gxf_muxer_select="pcm_rechunk_bsf"
3311 hds_muxer_select="flv_muxer"
3312 hls_muxer_select="mpegts_muxer"
3313 hls_muxer_suggest="gcrypt openssl"
3314 image2_alias_pix_demuxer_select="image2_demuxer"
3315 image2_brender_pix_demuxer_select="image2_demuxer"
3316 ipod_muxer_select="mov_muxer"
3317 ismv_muxer_select="mov_muxer"
3318 ivf_muxer_select="av1_metadata_bsf vp9_superframe_bsf"
3319 latm_muxer_select="aac_adtstoasc_bsf"
3320 matroska_audio_muxer_select="matroska_muxer"
3321 matroska_demuxer_select="iso_media riffdec"
3322 matroska_demuxer_suggest="bzlib lzo zlib"
3323 matroska_muxer_select="iso_media riffenc vp9_superframe_bsf aac_adtstoasc_bsf"
3324 mlp_demuxer_select="mlp_parser"
3325 mmf_muxer_select="riffenc"
3326 mov_demuxer_select="iso_media riffdec"
3327 mov_demuxer_suggest="zlib"
3328 mov_muxer_select="iso_media riffenc rtpenc_chain vp9_superframe_bsf aac_adtstoasc_bsf"
3329 mp3_demuxer_select="mpegaudio_parser"
3330 mp3_muxer_select="mpegaudioheader"
3331 mp4_muxer_select="mov_muxer"
3332 mpegts_demuxer_select="iso_media"
3333 mpegts_muxer_select="ac3_parser adts_muxer latm_muxer h264_mp4toannexb_bsf hevc_mp4toannexb_bsf"
3334 mpegtsraw_demuxer_select="mpegts_demuxer"
3335 mxf_muxer_select="golomb pcm_rechunk_bsf"
3336 mxf_d10_muxer_select="mxf_muxer"
3337 mxf_opatom_muxer_select="mxf_muxer"
3338 nut_muxer_select="riffenc"
3339 nuv_demuxer_select="riffdec"
3340 obu_demuxer_select="av1_frame_merge_bsf av1_parser"
3341 oga_muxer_select="ogg_muxer"
3342 ogg_demuxer_select="dirac_parse"
3343 ogv_muxer_select="ogg_muxer"
3344 opus_muxer_select="ogg_muxer"
3345 psp_muxer_select="mov_muxer"
3346 rtp_demuxer_select="sdp_demuxer"
3347 rtp_muxer_select="golomb jpegtables"
3348 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3349 rtsp_demuxer_select="http_protocol rtpdec"
3350 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3351 sap_demuxer_select="sdp_demuxer"
3352 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3353 sdp_demuxer_select="rtpdec"
3354 smoothstreaming_muxer_select="ismv_muxer"
3355 spdif_demuxer_select="adts_header"
3356 spdif_muxer_select="adts_header"
3357 spx_muxer_select="ogg_muxer"
3358 swf_demuxer_suggest="zlib"
3359 tak_demuxer_select="tak_parser"
3360 truehd_demuxer_select="mlp_parser"
3361 tg2_muxer_select="mov_muxer"
3362 tgp_muxer_select="mov_muxer"
3363 vobsub_demuxer_select="mpegps_demuxer"
3364 w64_demuxer_select="wav_demuxer"
3365 w64_muxer_select="wav_muxer"
3366 wav_demuxer_select="riffdec"
3367 wav_muxer_select="riffenc"
3368 webm_chunk_muxer_select="webm_muxer"
3369 webm_muxer_select="iso_media riffenc"
3370 webm_dash_manifest_demuxer_select="matroska_demuxer"
3371 wtv_demuxer_select="mpegts_demuxer riffdec"
3372 wtv_muxer_select="mpegts_muxer riffenc"
3373 xmv_demuxer_select="riffdec"
3374 xwma_demuxer_select="riffdec"
3375
3376 # indevs / outdevs
3377 android_camera_indev_deps="android camera2ndk mediandk pthreads"
3378 android_camera_indev_extralibs="-landroid -lcamera2ndk -lmediandk"
3379 alsa_indev_deps="alsa"
3380 alsa_outdev_deps="alsa"
3381 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3382 avfoundation_indev_suggest="coregraphics applicationservices"
3383 avfoundation_indev_extralibs="-framework Foundation"
3384 audiotoolbox_outdev_deps="audiotoolbox pthreads"
3385 audiotoolbox_outdev_extralibs="-framework AudioToolbox -framework CoreAudio"
3386 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3387 caca_outdev_deps="libcaca"
3388 decklink_deps_any="libdl LoadLibrary"
3389 decklink_indev_deps="decklink threads"
3390 decklink_indev_extralibs="-lstdc++"
3391 decklink_outdev_deps="decklink threads"
3392 decklink_outdev_suggest="libklvanc"
3393 decklink_outdev_extralibs="-lstdc++"
3394 dshow_indev_deps="IBaseFilter"
3395 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3396 fbdev_indev_deps="linux_fb_h"
3397 fbdev_outdev_deps="linux_fb_h"
3398 gdigrab_indev_deps="CreateDIBSection"
3399 gdigrab_indev_extralibs="-lgdi32"
3400 gdigrab_indev_select="bmp_decoder"
3401 iec61883_indev_deps="libiec61883"
3402 jack_indev_deps="libjack"
3403 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3404 kmsgrab_indev_deps="libdrm"
3405 lavfi_indev_deps="avfilter"
3406 libcdio_indev_deps="libcdio"
3407 libdc1394_indev_deps="libdc1394"
3408 openal_indev_deps="openal"
3409 opengl_outdev_deps="opengl"
3410 opengl_outdev_suggest="sdl2"
3411 oss_indev_deps_any="sys_soundcard_h"
3412 oss_outdev_deps_any="sys_soundcard_h"
3413 pulse_indev_deps="libpulse"
3414 pulse_outdev_deps="libpulse"
3415 sdl2_outdev_deps="sdl2"
3416 sndio_indev_deps="sndio"
3417 sndio_outdev_deps="sndio"
3418 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3419 v4l2_indev_suggest="libv4l2"
3420 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3421 v4l2_outdev_suggest="libv4l2"
3422 vfwcap_indev_deps="vfw32 vfwcap_defines"
3423 xcbgrab_indev_deps="libxcb"
3424 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3425 xv_outdev_deps="xlib"
3426
3427 # protocols
3428 async_protocol_deps="threads"
3429 bluray_protocol_deps="libbluray"
3430 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3431 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl mbedtls"
3432 ffrtmpcrypt_protocol_select="tcp_protocol"
3433 ffrtmphttp_protocol_conflict="librtmp_protocol"
3434 ffrtmphttp_protocol_select="http_protocol"
3435 ftp_protocol_select="tcp_protocol"
3436 gopher_protocol_select="network"
3437 http_protocol_select="tcp_protocol"
3438 http_protocol_suggest="zlib"
3439 httpproxy_protocol_select="tcp_protocol"
3440 httpproxy_protocol_suggest="zlib"
3441 https_protocol_select="tls_protocol"
3442 https_protocol_suggest="zlib"
3443 icecast_protocol_select="http_protocol"
3444 mmsh_protocol_select="http_protocol"
3445 mmst_protocol_select="network"
3446 rtmp_protocol_conflict="librtmp_protocol"
3447 rtmp_protocol_select="tcp_protocol"
3448 rtmp_protocol_suggest="zlib"
3449 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3450 rtmpe_protocol_suggest="zlib"
3451 rtmps_protocol_conflict="librtmp_protocol"
3452 rtmps_protocol_select="tls_protocol"
3453 rtmps_protocol_suggest="zlib"
3454 rtmpt_protocol_select="ffrtmphttp_protocol"
3455 rtmpt_protocol_suggest="zlib"
3456 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3457 rtmpte_protocol_suggest="zlib"
3458 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3459 rtmpts_protocol_suggest="zlib"
3460 rtp_protocol_select="udp_protocol"
3461 schannel_conflict="openssl gnutls libtls mbedtls"
3462 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3463 sctp_protocol_select="network"
3464 securetransport_conflict="openssl gnutls libtls mbedtls"
3465 srtp_protocol_select="rtp_protocol srtp"
3466 tcp_protocol_select="network"
3467 tls_protocol_deps_any="gnutls openssl schannel securetransport libtls mbedtls"
3468 tls_protocol_select="tcp_protocol"
3469 udp_protocol_select="network"
3470 udplite_protocol_select="network"
3471 unix_protocol_deps="sys_un_h"
3472 unix_protocol_select="network"
3473
3474 # external library protocols
3475 libamqp_protocol_deps="librabbitmq"
3476 libamqp_protocol_select="network"
3477 librtmp_protocol_deps="librtmp"
3478 librtmpe_protocol_deps="librtmp"
3479 librtmps_protocol_deps="librtmp"
3480 librtmpt_protocol_deps="librtmp"
3481 librtmpte_protocol_deps="librtmp"
3482 libsmbclient_protocol_deps="libsmbclient gplv3"
3483 libsrt_protocol_deps="libsrt"
3484 libsrt_protocol_select="network"
3485 libssh_protocol_deps="libssh"
3486 libtls_conflict="openssl gnutls mbedtls"
3487 libzmq_protocol_deps="libzmq"
3488 libzmq_protocol_select="network"
3489
3490 # filters
3491 afftdn_filter_deps="avcodec"
3492 afftdn_filter_select="fft"
3493 afftfilt_filter_deps="avcodec"
3494 afftfilt_filter_select="fft"
3495 afir_filter_deps="avcodec"
3496 afir_filter_select="rdft"
3497 amovie_filter_deps="avcodec avformat"
3498 aresample_filter_deps="swresample"
3499 asr_filter_deps="pocketsphinx"
3500 ass_filter_deps="libass"
3501 atempo_filter_deps="avcodec"
3502 atempo_filter_select="rdft"
3503 avgblur_opencl_filter_deps="opencl"
3504 avgblur_vulkan_filter_deps="vulkan libglslang"
3505 azmq_filter_deps="libzmq"
3506 blackframe_filter_deps="gpl"
3507 bm3d_filter_deps="avcodec"
3508 bm3d_filter_select="dct"
3509 boxblur_filter_deps="gpl"
3510 boxblur_opencl_filter_deps="opencl gpl"
3511 bs2b_filter_deps="libbs2b"
3512 chromaber_vulkan_filter_deps="vulkan libglslang"
3513 colorkey_opencl_filter_deps="opencl"
3514 colormatrix_filter_deps="gpl"
3515 convolution_opencl_filter_deps="opencl"
3516 convolve_filter_deps="avcodec"
3517 convolve_filter_select="fft"
3518 coreimage_filter_deps="coreimage appkit"
3519 coreimage_filter_extralibs="-framework OpenGL"
3520 coreimagesrc_filter_deps="coreimage appkit"
3521 coreimagesrc_filter_extralibs="-framework OpenGL"
3522 cover_rect_filter_deps="avcodec avformat gpl"
3523 cropdetect_filter_deps="gpl"
3524 deconvolve_filter_deps="avcodec"
3525 deconvolve_filter_select="fft"
3526 deinterlace_qsv_filter_deps="libmfx"
3527 deinterlace_vaapi_filter_deps="vaapi"
3528 delogo_filter_deps="gpl"
3529 denoise_vaapi_filter_deps="vaapi"
3530 derain_filter_select="dnn"
3531 deshake_filter_select="pixelutils"
3532 deshake_opencl_filter_deps="opencl"
3533 dilation_opencl_filter_deps="opencl"
3534 dnn_processing_filter_deps="swscale"
3535 dnn_processing_filter_select="dnn"
3536 drawtext_filter_deps="libfreetype"
3537 drawtext_filter_suggest="libfontconfig libfribidi"
3538 elbg_filter_deps="avcodec"
3539 eq_filter_deps="gpl"
3540 erosion_opencl_filter_deps="opencl"
3541 fftfilt_filter_deps="avcodec"
3542 fftfilt_filter_select="rdft"
3543 fftdnoiz_filter_deps="avcodec"
3544 fftdnoiz_filter_select="fft"
3545 find_rect_filter_deps="avcodec avformat gpl"
3546 firequalizer_filter_deps="avcodec"
3547 firequalizer_filter_select="rdft"
3548 flite_filter_deps="libflite"
3549 framerate_filter_select="scene_sad"
3550 freezedetect_filter_select="scene_sad"
3551 frei0r_filter_deps="frei0r libdl"
3552 frei0r_src_filter_deps="frei0r libdl"
3553 fspp_filter_deps="gpl"
3554 headphone_filter_select="fft"
3555 histeq_filter_deps="gpl"
3556 hqdn3d_filter_deps="gpl"
3557 interlace_filter_deps="gpl"
3558 kerndeint_filter_deps="gpl"
3559 ladspa_filter_deps="ladspa libdl"
3560 lensfun_filter_deps="liblensfun version3"
3561 lv2_filter_deps="lv2"
3562 mcdeint_filter_deps="avcodec gpl"
3563 movie_filter_deps="avcodec avformat"
3564 mpdecimate_filter_deps="gpl"
3565 mpdecimate_filter_select="pixelutils"
3566 minterpolate_filter_select="scene_sad"
3567 mptestsrc_filter_deps="gpl"
3568 negate_filter_deps="lut_filter"
3569 nlmeans_opencl_filter_deps="opencl"
3570 nnedi_filter_deps="gpl"
3571 ocr_filter_deps="libtesseract"
3572 ocv_filter_deps="libopencv"
3573 openclsrc_filter_deps="opencl"
3574 overlay_opencl_filter_deps="opencl"
3575 overlay_qsv_filter_deps="libmfx"
3576 overlay_qsv_filter_select="qsvvpp"
3577 overlay_vulkan_filter_deps="vulkan libglslang"
3578 owdenoise_filter_deps="gpl"
3579 pad_opencl_filter_deps="opencl"
3580 pan_filter_deps="swresample"
3581 perspective_filter_deps="gpl"
3582 phase_filter_deps="gpl"
3583 pp7_filter_deps="gpl"
3584 pp_filter_deps="gpl postproc"
3585 prewitt_opencl_filter_deps="opencl"
3586 procamp_vaapi_filter_deps="vaapi"
3587 program_opencl_filter_deps="opencl"
3588 pullup_filter_deps="gpl"
3589 removelogo_filter_deps="avcodec avformat swscale"
3590 repeatfields_filter_deps="gpl"
3591 resample_filter_deps="avresample"
3592 roberts_opencl_filter_deps="opencl"
3593 rubberband_filter_deps="librubberband"
3594 sab_filter_deps="gpl swscale"
3595 scale2ref_filter_deps="swscale"
3596 scale_filter_deps="swscale"
3597 scale_qsv_filter_deps="libmfx"
3598 scdet_filter_select="scene_sad"
3599 select_filter_select="scene_sad"
3600 sharpness_vaapi_filter_deps="vaapi"
3601 showcqt_filter_deps="avcodec avformat swscale"
3602 showcqt_filter_suggest="libfontconfig libfreetype"
3603 showcqt_filter_select="fft"
3604 showfreqs_filter_deps="avcodec"
3605 showfreqs_filter_select="fft"
3606 showspatial_filter_select="fft"
3607 showspectrum_filter_deps="avcodec"
3608 showspectrum_filter_select="fft"
3609 showspectrumpic_filter_deps="avcodec"
3610 showspectrumpic_filter_select="fft"
3611 signature_filter_deps="gpl avcodec avformat"
3612 sinc_filter_select="rdft"
3613 smartblur_filter_deps="gpl swscale"
3614 sobel_opencl_filter_deps="opencl"
3615 sofalizer_filter_deps="libmysofa avcodec"
3616 sofalizer_filter_select="fft"
3617 spectrumsynth_filter_deps="avcodec"
3618 spectrumsynth_filter_select="fft"
3619 spp_filter_deps="gpl avcodec"
3620 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3621 sr_filter_deps="avformat swscale"
3622 sr_filter_select="dnn"
3623 stereo3d_filter_deps="gpl"
3624 subtitles_filter_deps="avformat avcodec libass"
3625 super2xsai_filter_deps="gpl"
3626 pixfmts_super2xsai_test_deps="super2xsai_filter"
3627 superequalizer_filter_select="rdft"
3628 surround_filter_select="rdft"
3629 tinterlace_filter_deps="gpl"
3630 tinterlace_merge_test_deps="tinterlace_filter"
3631 tinterlace_pad_test_deps="tinterlace_filter"
3632 tonemap_filter_deps="const_nan"
3633 tonemap_vaapi_filter_deps="vaapi VAProcFilterParameterBufferHDRToneMapping"
3634 tonemap_opencl_filter_deps="opencl const_nan"
3635 transpose_opencl_filter_deps="opencl"
3636 transpose_vaapi_filter_deps="vaapi VAProcPipelineCaps_rotation_flags"
3637 unsharp_opencl_filter_deps="opencl"
3638 uspp_filter_deps="gpl avcodec"
3639 vaguedenoiser_filter_deps="gpl"
3640 vidstabdetect_filter_deps="libvidstab"
3641 vidstabtransform_filter_deps="libvidstab"
3642 libvmaf_filter_deps="libvmaf pthreads"
3643 zmq_filter_deps="libzmq"
3644 zoompan_filter_deps="swscale"
3645 zscale_filter_deps="libzimg const_nan"
3646 scale_vaapi_filter_deps="vaapi"
3647 scale_vulkan_filter_deps="vulkan libglslang"
3648 vpp_qsv_filter_deps="libmfx"
3649 vpp_qsv_filter_select="qsvvpp"
3650 xfade_opencl_filter_deps="opencl"
3651 yadif_cuda_filter_deps="ffnvcodec"
3652 yadif_cuda_filter_deps_any="cuda_nvcc cuda_llvm"
3653
3654 # examples
3655 avio_list_dir_deps="avformat avutil"
3656 avio_reading_deps="avformat avcodec avutil"
3657 decode_audio_example_deps="avcodec avutil"
3658 decode_video_example_deps="avcodec avutil"
3659 demuxing_decoding_example_deps="avcodec avformat avutil"
3660 encode_audio_example_deps="avcodec avutil"
3661 encode_video_example_deps="avcodec avutil"
3662 extract_mvs_example_deps="avcodec avformat avutil"
3663 filter_audio_example_deps="avfilter avutil"
3664 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3665 filtering_video_example_deps="avfilter avcodec avformat avutil"
3666 http_multiclient_example_deps="avformat avutil fork"
3667 hw_decode_example_deps="avcodec avformat avutil"
3668 metadata_example_deps="avformat avutil"
3669 muxing_example_deps="avcodec avformat avutil swscale"
3670 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3671 remuxing_example_deps="avcodec avformat avutil"
3672 resampling_audio_example_deps="avutil swresample"
3673 scaling_video_example_deps="avutil swscale"
3674 transcode_aac_example_deps="avcodec avformat swresample"
3675 transcoding_example_deps="avfilter avcodec avformat avutil"
3676 vaapi_encode_example_deps="avcodec avutil h264_vaapi_encoder"
3677 vaapi_transcode_example_deps="avcodec avformat avutil h264_vaapi_encoder"
3678
3679 # EXTRALIBS_LIST
3680 cpu_init_extralibs="pthreads_extralibs"
3681 cws2fws_extralibs="zlib_extralibs"
3682
3683 # libraries, in any order
3684 avcodec_deps="avutil"
3685 avcodec_suggest="libm"
3686 avcodec_select="null_bsf"
3687 avdevice_deps="avformat avcodec avutil"
3688 avdevice_suggest="libm"
3689 avfilter_deps="avutil"
3690 avfilter_suggest="libm"
3691 avformat_deps="avcodec avutil"
3692 avformat_suggest="libm network zlib"
3693 avresample_deps="avutil"
3694 avresample_suggest="libm"
3695 avutil_suggest="clock_gettime ffnvcodec libm libdrm libmfx opencl user32 vaapi vulkan videotoolbox corefoundation corevideo coremedia bcrypt"
3696 postproc_deps="avutil gpl"
3697 postproc_suggest="libm"
3698 swresample_deps="avutil"
3699 swresample_suggest="libm libsoxr"
3700 swscale_deps="avutil"
3701 swscale_suggest="libm"
3702
3703 avcodec_extralibs="pthreads_extralibs iconv_extralibs dxva2_extralibs"
3704 avfilter_extralibs="pthreads_extralibs"
3705 avutil_extralibs="d3d11va_extralibs nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3706
3707 # programs
3708 ffmpeg_deps="avcodec avfilter avformat"
3709 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3710                hflip_filter null_filter
3711                transpose_filter trim_filter vflip_filter"
3712 ffmpeg_suggest="ole32 psapi shell32"
3713 ffplay_deps="avcodec avformat swscale swresample sdl2"
3714 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3715 ffplay_suggest="shell32"
3716 ffprobe_deps="avcodec avformat"
3717 ffprobe_suggest="shell32"
3718
3719 # documentation
3720 podpages_deps="perl"
3721 manpages_deps="perl pod2man"
3722 htmlpages_deps="perl"
3723 htmlpages_deps_any="makeinfo_html texi2html"
3724 txtpages_deps="perl makeinfo"
3725 doc_deps_any="manpages htmlpages podpages txtpages"
3726
3727 # default parameters
3728
3729 logfile="ffbuild/config.log"
3730
3731 # installation paths
3732 prefix_default="/usr/local"
3733 bindir_default='${prefix}/bin'
3734 datadir_default='${prefix}/share/ffmpeg'
3735 docdir_default='${prefix}/share/doc/ffmpeg'
3736 incdir_default='${prefix}/include'
3737 libdir_default='${prefix}/lib'
3738 mandir_default='${prefix}/share/man'
3739
3740 # toolchain
3741 ar_default="ar"
3742 cc_default="gcc"
3743 cxx_default="g++"
3744 host_cc_default="gcc"
3745 doxygen_default="doxygen"
3746 install="install"
3747 ln_s_default="ln -s -f"
3748 nm_default="nm -g"
3749 pkg_config_default=pkg-config
3750 ranlib_default="ranlib"
3751 strip_default="strip"
3752 version_script='--version-script'
3753 objformat="elf32"
3754 x86asmexe_default="nasm"
3755 windres_default="windres"
3756 striptype="direct"
3757
3758 # OS
3759 target_os_default=$(tolower $(uname -s))
3760 host_os=$target_os_default
3761
3762 # machine
3763 if test "$target_os_default" = aix; then
3764     arch_default=$(uname -p)
3765     strip_default="strip -X32_64"
3766     nm_default="nm -g -X32_64"
3767 else
3768     arch_default=$(uname -m)
3769 fi
3770 cpu="generic"
3771 intrinsics="none"
3772
3773 # configurable options
3774 enable $PROGRAM_LIST
3775 enable $DOCUMENT_LIST
3776 enable $EXAMPLE_LIST
3777 enable $(filter_out avresample $LIBRARY_LIST)
3778 enable stripping
3779
3780 enable asm
3781 enable debug
3782 enable doc
3783 enable faan faandct faanidct
3784 enable large_tests
3785 enable optimizations
3786 enable runtime_cpudetect
3787 enable safe_bitstream_reader
3788 enable static
3789 enable swscale_alpha
3790 enable valgrind_backtrace
3791
3792 sws_max_filter_size_default=256
3793 set_default sws_max_filter_size
3794
3795 # internal components are enabled by default
3796 enable $EXTRALIBS_LIST
3797
3798 # Avoid external, non-system, libraries getting enabled by dependency resolution
3799 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3800
3801 # build settings
3802 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3803 LIBPREF="lib"
3804 LIBSUF=".a"
3805 FULLNAME='$(NAME)$(BUILDSUF)'
3806 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3807 SLIBPREF="lib"
3808 SLIBSUF=".so"
3809 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3810 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3811 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3812 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3813 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3814 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3815 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3816
3817 asflags_filter=echo
3818 cflags_filter=echo
3819 ldflags_filter=echo
3820
3821 AS_C='-c'
3822 AS_O='-o $@'
3823 CC_C='-c'
3824 CC_E='-E -o $@'
3825 CC_O='-o $@'
3826 CXX_C='-c'
3827 CXX_O='-o $@'
3828 OBJCC_C='-c'
3829 OBJCC_E='-E -o $@'
3830 OBJCC_O='-o $@'
3831 X86ASM_O='-o $@'
3832 LD_O='-o $@'
3833 LD_LIB='-l%'
3834 LD_PATH='-L'
3835 HOSTCC_C='-c'
3836 HOSTCC_E='-E -o $@'
3837 HOSTCC_O='-o $@'
3838 HOSTLD_O='-o $@'
3839 NVCC_C='-c'
3840 NVCC_O='-o $@'
3841
3842 host_extralibs='-lm'
3843 host_cflags_filter=echo
3844 host_ldflags_filter=echo
3845
3846 target_path='$(CURDIR)'
3847
3848 # since the object filename is not given with the -MM flag, the compiler
3849 # is only able to print the basename, and we must add the path ourselves
3850 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3851 DEPFLAGS='-MM'
3852
3853 mkdir -p ffbuild
3854
3855 # find source path
3856 if test -f configure; then
3857     source_path=.
3858 elif test -f src/configure; then
3859     source_path=src
3860 else
3861     source_path=$(cd $(dirname "$0"); pwd)
3862     case "$source_path" in
3863         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3864     esac
3865     test -e "$source_path/config.h" &&
3866         die "Out of tree builds are impossible with config.h in source dir."
3867 fi
3868
3869 for v in "$@"; do
3870     r=${v#*=}
3871     l=${v%"$r"}
3872     r=$(sh_quote "$r")
3873     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3874 done
3875
3876 find_things_extern(){
3877     thing=$1
3878     pattern=$2
3879     file=$source_path/$3
3880     out=${4:-$thing}
3881     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$out/p" "$file"
3882 }
3883
3884 find_filters_extern(){
3885     file=$source_path/$1
3886     sed -n 's/^extern AVFilter ff_[avfsinkrc]\{2,5\}_\([[:alnum:]_]\{1,\}\);/\1_filter/p' $file
3887 }
3888
3889 FILTER_LIST=$(find_filters_extern libavfilter/allfilters.c)
3890 OUTDEV_LIST=$(find_things_extern muxer AVOutputFormat libavdevice/alldevices.c outdev)
3891 INDEV_LIST=$(find_things_extern demuxer AVInputFormat libavdevice/alldevices.c indev)
3892 MUXER_LIST=$(find_things_extern muxer AVOutputFormat libavformat/allformats.c)
3893 DEMUXER_LIST=$(find_things_extern demuxer AVInputFormat libavformat/allformats.c)
3894 ENCODER_LIST=$(find_things_extern encoder AVCodec libavcodec/allcodecs.c)
3895 DECODER_LIST=$(find_things_extern decoder AVCodec libavcodec/allcodecs.c)
3896 CODEC_LIST="
3897     $ENCODER_LIST
3898     $DECODER_LIST
3899 "
3900 PARSER_LIST=$(find_things_extern parser AVCodecParser libavcodec/parsers.c)
3901 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3902 HWACCEL_LIST=$(find_things_extern hwaccel AVHWAccel libavcodec/hwaccels.h)
3903 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3904
3905 AVCODEC_COMPONENTS_LIST="
3906     $BSF_LIST
3907     $DECODER_LIST
3908     $ENCODER_LIST
3909     $HWACCEL_LIST
3910     $PARSER_LIST
3911 "
3912
3913 AVDEVICE_COMPONENTS_LIST="
3914     $INDEV_LIST
3915     $OUTDEV_LIST
3916 "
3917
3918 AVFILTER_COMPONENTS_LIST="
3919     $FILTER_LIST
3920 "
3921
3922 AVFORMAT_COMPONENTS_LIST="
3923     $DEMUXER_LIST
3924     $MUXER_LIST
3925     $PROTOCOL_LIST
3926 "
3927
3928 ALL_COMPONENTS="
3929     $AVCODEC_COMPONENTS_LIST
3930     $AVDEVICE_COMPONENTS_LIST
3931     $AVFILTER_COMPONENTS_LIST
3932     $AVFORMAT_COMPONENTS_LIST
3933 "
3934
3935 for n in $COMPONENT_LIST; do
3936     v=$(toupper ${n%s})_LIST
3937     eval enable \$$v
3938     eval ${n}_if_any="\$$v"
3939 done
3940
3941 enable $ARCH_EXT_LIST
3942
3943 die_unknown(){
3944     echo "Unknown option \"$1\"."
3945     echo "See $0 --help for available options."
3946     exit 1
3947 }
3948
3949 print_in_columns() {
3950     tr ' ' '\n' | sort | tr '\r\n' '  ' | awk -v col_width=24 -v width="$ncols" '
3951     {
3952         num_cols = width > col_width ? int(width / col_width) : 1;
3953         num_rows = int((NF + num_cols-1) / num_cols);
3954         y = x = 1;
3955         for (y = 1; y <= num_rows; y++) {
3956             i = y;
3957             for (x = 1; x <= num_cols; x++) {
3958                 if (i <= NF) {
3959                   line = sprintf("%s%-" col_width "s", line, $i);
3960                 }
3961                 i = i + num_rows;
3962             }
3963             print line; line = "";
3964         }
3965     }' | sed 's/ *$//'
3966 }
3967
3968 show_list() {
3969     suffix=_$1
3970     shift
3971     echo $* | sed s/$suffix//g | print_in_columns
3972     exit 0
3973 }
3974
3975 rand_list(){
3976     IFS=', '
3977     set -- $*
3978     unset IFS
3979     for thing; do
3980         comp=${thing%:*}
3981         prob=${thing#$comp}
3982         prob=${prob#:}
3983         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3984         echo "prob ${prob:-0.5}"
3985         printf '%s\n' $comp
3986     done
3987 }
3988
3989 do_random(){
3990     action=$1
3991     shift
3992     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3993     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3994 }
3995
3996 for opt do
3997     optval="${opt#*=}"
3998     case "$opt" in
3999         --extra-ldflags=*)
4000             add_ldflags $optval
4001         ;;
4002         --extra-ldexeflags=*)
4003             add_ldexeflags $optval
4004         ;;
4005         --extra-ldsoflags=*)
4006             add_ldsoflags $optval
4007         ;;
4008         --extra-ldlibflags=*)
4009             warn "The --extra-ldlibflags option is only provided for compatibility and will be\n"\
4010                  "removed in the future. Use --extra-ldsoflags instead."
4011             add_ldsoflags $optval
4012         ;;
4013         --extra-libs=*)
4014             add_extralibs $optval
4015         ;;
4016         --disable-devices)
4017             disable $INDEV_LIST $OUTDEV_LIST
4018         ;;
4019         --enable-debug=*)
4020             debuglevel="$optval"
4021         ;;
4022         --disable-programs)
4023             disable $PROGRAM_LIST
4024         ;;
4025         --disable-everything)
4026             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
4027         ;;
4028         --disable-all)
4029             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
4030             disable $LIBRARY_LIST $PROGRAM_LIST doc
4031             enable avutil
4032         ;;
4033         --enable-random|--disable-random)
4034             action=${opt%%-random}
4035             do_random ${action#--} $COMPONENT_LIST
4036         ;;
4037         --enable-random=*|--disable-random=*)
4038             action=${opt%%-random=*}
4039             do_random ${action#--} $optval
4040         ;;
4041         --enable-sdl)
4042             enable sdl2
4043         ;;
4044         --enable-*=*|--disable-*=*)
4045             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
4046             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
4047             eval list=\$$(toupper $thing)_LIST
4048             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
4049             list=$(filter "$name" $list)
4050             [ "$list" = "" ] && warn "Option $opt did not match anything"
4051             test $action = enable && warn_if_gets_disabled $list
4052             $action $list
4053         ;;
4054         --enable-yasm|--disable-yasm)
4055             warn "The ${opt} option is only provided for compatibility and will be\n"\
4056                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
4057             test $opt = --enable-yasm && x86asm=yes || x86asm=no
4058         ;;
4059         --yasmexe=*)
4060             warn "The --yasmexe option is only provided for compatibility and will be\n"\
4061                  "removed in the future. Use --x86asmexe instead."
4062             x86asmexe="$optval"
4063         ;;
4064         --enable-?*|--disable-?*)
4065             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
4066             if is_in $option $COMPONENT_LIST; then
4067                 test $action = disable && action=unset
4068                 eval $action \$$(toupper ${option%s})_LIST
4069             elif is_in $option $CMDLINE_SELECT; then
4070                 $action $option
4071             else
4072                 die_unknown $opt
4073             fi
4074         ;;
4075         --list-*)
4076             NAME="${opt#--list-}"
4077             is_in $NAME $COMPONENT_LIST || die_unknown $opt
4078             NAME=${NAME%s}
4079             eval show_list $NAME \$$(toupper $NAME)_LIST
4080         ;;
4081         --help|-h) show_help
4082         ;;
4083         --quiet|-q) quiet=yes
4084         ;;
4085         --fatal-warnings) enable fatal_warnings
4086         ;;
4087         --libfuzzer=*)
4088             libfuzzer_path="$optval"
4089         ;;
4090         *)
4091             optname="${opt%%=*}"
4092             optname="${optname#--}"
4093             optname=$(echo "$optname" | sed 's/-/_/g')
4094             if is_in $optname $CMDLINE_SET; then
4095                 eval $optname='$optval'
4096             elif is_in $optname $CMDLINE_APPEND; then
4097                 append $optname "$optval"
4098             else
4099                 die_unknown $opt
4100             fi
4101         ;;
4102     esac
4103 done
4104
4105 for e in $env; do
4106     eval "export $e"
4107 done
4108
4109 if disabled autodetect; then
4110
4111     # Unless iconv is explicitely disabled by the user, we still want to probe
4112     # for the iconv from the libc.
4113     disabled iconv || enable libc_iconv
4114
4115     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
4116     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
4117 fi
4118 # Mark specifically enabled, but normally autodetected libraries as requested.
4119 for lib in $AUTODETECT_LIBS; do
4120     enabled $lib && request $lib
4121 done
4122 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
4123 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
4124 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
4125
4126 disabled logging && logfile=/dev/null
4127
4128 # command line configuration sanity checks
4129
4130 # we need to build at least one lib type
4131 if ! enabled_any static shared; then
4132     cat <<EOF
4133 At least one library type must be built.
4134 Specify --enable-static to build the static libraries or --enable-shared to
4135 build the shared libraries as well. To only build the shared libraries specify
4136 --disable-static in addition to --enable-shared.
4137 EOF
4138     exit 1
4139 fi
4140
4141 die_license_disabled() {
4142     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
4143 }
4144
4145 die_license_disabled_gpl() {
4146     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
4147 }
4148
4149 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
4150 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
4151
4152 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
4153 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
4154
4155 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4156
4157 if enabled nonfree; then
4158     license="nonfree and unredistributable"
4159 elif enabled gplv3; then
4160     license="GPL version 3 or later"
4161 elif enabled lgplv3; then
4162     license="LGPL version 3 or later"
4163 elif enabled gpl; then
4164     license="GPL version 2 or later"
4165 else
4166     license="LGPL version 2.1 or later"
4167 fi
4168
4169 enabled_all gnutls openssl &&
4170     die "GnuTLS and OpenSSL must not be enabled at the same time."
4171
4172 enabled_all gnutls mbedtls &&
4173     die "GnuTLS and mbedTLS must not be enabled at the same time."
4174
4175 enabled_all openssl mbedtls &&
4176     die "OpenSSL and mbedTLS must not be enabled at the same time."
4177
4178 # Disable all the library-specific components if the library itself
4179 # is disabled, see AVCODEC_LIST and following _LIST variables.
4180
4181 disable_components(){
4182     disabled ${1} && disable $(
4183         eval components="\$$(toupper ${1})_COMPONENTS"
4184         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
4185     )
4186 }
4187
4188 map 'disable_components $v' $LIBRARY_LIST
4189
4190 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
4191 set >> $logfile
4192
4193 test -n "$valgrind" && toolchain="valgrind-memcheck"
4194
4195 enabled ossfuzz && ! echo $CFLAGS | grep -q -- "-fsanitize="  && ! echo $CFLAGS | grep -q -- "-fcoverage-mapping" &&{
4196     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
4197     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
4198 }
4199
4200 case "$toolchain" in
4201     *-asan)
4202         cc_default="${toolchain%-asan}"
4203         add_cflags  -fsanitize=address
4204         add_ldflags -fsanitize=address
4205     ;;
4206     *-msan)
4207         cc_default="${toolchain%-msan}"
4208         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
4209         add_ldflags -fsanitize=memory
4210     ;;
4211     *-tsan)
4212         cc_default="${toolchain%-tsan}"
4213         add_cflags  -fsanitize=thread
4214         add_ldflags -fsanitize=thread
4215         case "$toolchain" in
4216             gcc-tsan)
4217                 add_cflags  -fPIC
4218                 add_ldflags -fPIC
4219                 ;;
4220         esac
4221     ;;
4222     *-usan)
4223         cc_default="${toolchain%-usan}"
4224         add_cflags  -fsanitize=undefined
4225         add_ldflags -fsanitize=undefined
4226     ;;
4227     valgrind-*)
4228         target_exec_default="valgrind"
4229         case "$toolchain" in
4230             valgrind-massif)
4231                 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"
4232                 ;;
4233             valgrind-memcheck)
4234                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
4235                 ;;
4236         esac
4237     ;;
4238     msvc)
4239         # Check whether the current MSVC version needs the C99 converter.
4240         # From MSVC 2013 (compiler major version 18) onwards, it does actually
4241         # support enough of C99 to build ffmpeg. Default to the new
4242         # behaviour if the regexp was unable to match anything, since this
4243         # successfully parses the version number of existing supported
4244         # versions that require the converter (MSVC 2010 and 2012).
4245         cl_major_ver=$(cl.exe 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
4246         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
4247             cc_default="cl.exe"
4248             cxx_default="cl.exe"
4249         else
4250             die "Unsupported MSVC version (2013 or newer required)"
4251         fi
4252         ld_default="$source_path/compat/windows/mslink"
4253         nm_default="dumpbin.exe -symbols"
4254         ar_default="lib.exe"
4255         case "$arch" in
4256         aarch64|arm64)
4257             as_default="armasm64.exe"
4258             ;;
4259         arm*)
4260             as_default="armasm.exe"
4261             ;;
4262         esac
4263         target_os_default="win32"
4264         # Use a relative path for TMPDIR. This makes sure all the
4265         # ffconf temp files are written with a relative path, avoiding
4266         # issues with msys/win32 path conversion for MSVC parameters
4267         # such as -Fo<file> or -out:<file>.
4268         TMPDIR=.
4269     ;;
4270     icl)
4271         cc_default="icl"
4272         ld_default="xilink"
4273         nm_default="dumpbin -symbols"
4274         ar_default="xilib"
4275         target_os_default="win32"
4276         TMPDIR=.
4277     ;;
4278     gcov)
4279         add_cflags  -fprofile-arcs -ftest-coverage
4280         add_ldflags -fprofile-arcs -ftest-coverage
4281     ;;
4282     llvm-cov)
4283         add_cflags -fprofile-arcs -ftest-coverage
4284         add_ldflags --coverage
4285     ;;
4286     hardened)
4287         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
4288         add_cflags   -fno-strict-overflow -fstack-protector-all
4289         add_ldflags  -Wl,-z,relro -Wl,-z,now
4290         add_cflags   -fPIE
4291         add_ldexeflags -fPIE -pie
4292     ;;
4293     ?*)
4294         die "Unknown toolchain $toolchain"
4295     ;;
4296 esac
4297
4298 if test -n "$cross_prefix"; then
4299     test -n "$arch" && test -n "$target_os" ||
4300         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
4301     enable cross_compile
4302 fi
4303
4304 set_default target_os
4305 if test "$target_os" = android; then
4306     cc_default="clang"
4307 fi
4308
4309 ar_default="${cross_prefix}${ar_default}"
4310 cc_default="${cross_prefix}${cc_default}"
4311 cxx_default="${cross_prefix}${cxx_default}"
4312 nm_default="${cross_prefix}${nm_default}"
4313 pkg_config_default="${cross_prefix}${pkg_config_default}"
4314 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
4315     ranlib_default="${cross_prefix}${ranlib_default} -D"
4316 else
4317     ranlib_default="${cross_prefix}${ranlib_default}"
4318 fi
4319 strip_default="${cross_prefix}${strip_default}"
4320 windres_default="${cross_prefix}${windres_default}"
4321
4322 sysinclude_default="${sysroot}/usr/include"
4323
4324 if enabled cuda_sdk; then
4325     warn "Option --enable-cuda-sdk is deprecated. Use --enable-cuda-nvcc instead."
4326     enable cuda_nvcc
4327 fi
4328
4329 if enabled cuda_nvcc; then
4330     nvcc_default="nvcc"
4331     nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
4332 else
4333     nvcc_default="clang"
4334     nvccflags_default="--cuda-gpu-arch=sm_30 -O2"
4335     NVCC_C=""
4336 fi
4337
4338 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
4339     target_exec x86asmexe nvcc
4340 enabled cross_compile || host_cc_default=$cc
4341 set_default host_cc
4342
4343 pkg_config_fail_message=""
4344 if ! $pkg_config --version >/dev/null 2>&1; then
4345     warn "$pkg_config not found, library detection may fail."
4346     pkg_config=false
4347 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
4348     pkg_config_fail_message="
4349 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
4350 fi
4351
4352 if test $doxygen != $doxygen_default && \
4353   ! $doxygen --version >/dev/null 2>&1; then
4354     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
4355 fi
4356
4357 exesuf() {
4358     case $1 in
4359         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
4360     esac
4361 }
4362
4363 EXESUF=$(exesuf $target_os)
4364 HOSTEXESUF=$(exesuf $host_os)
4365
4366 # set temporary file name
4367 : ${TMPDIR:=$TEMPDIR}
4368 : ${TMPDIR:=$TMP}
4369 : ${TMPDIR:=/tmp}
4370
4371 if [ -n "$tempprefix" ] ; then
4372     mktemp(){
4373         tmpname="$tempprefix.${HOSTNAME}.${UID}"
4374         echo "$tmpname"
4375         mkdir "$tmpname"
4376     }
4377 elif ! test_cmd mktemp -u XXXXXX; then
4378     # simple replacement for missing mktemp
4379     # NOT SAFE FOR GENERAL USE
4380     mktemp(){
4381         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
4382         echo "$tmpname"
4383         mkdir "$tmpname"
4384     }
4385 fi
4386
4387 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
4388     die "Unable to create temporary directory in $TMPDIR."
4389
4390 tmpfile(){
4391     tmp="${FFTMPDIR}/test"$2
4392     (set -C; exec > $tmp) 2> /dev/null ||
4393         die "Unable to create temporary file in $FFTMPDIR."
4394     eval $1=$tmp
4395 }
4396
4397 trap 'rm -rf -- "$FFTMPDIR"' EXIT
4398 trap 'exit 2' INT
4399
4400 tmpfile TMPASM .asm
4401 tmpfile TMPC   .c
4402 tmpfile TMPCPP .cpp
4403 tmpfile TMPE   $EXESUF
4404 tmpfile TMPH   .h
4405 tmpfile TMPM   .m
4406 tmpfile TMPCU  .cu
4407 tmpfile TMPO   .o
4408 tmpfile TMPS   .S
4409 tmpfile TMPSH  .sh
4410 tmpfile TMPV   .ver
4411
4412 unset -f mktemp
4413
4414 chmod +x $TMPE
4415
4416 # make sure we can execute files in $TMPDIR
4417 cat > $TMPSH 2>> $logfile <<EOF
4418 #! /bin/sh
4419 EOF
4420 chmod +x $TMPSH >> $logfile 2>&1
4421 if ! $TMPSH >> $logfile 2>&1; then
4422     cat <<EOF
4423 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
4424 variable to another directory and make sure that it is not mounted noexec.
4425 EOF
4426     die "Sanity test failed."
4427 fi
4428
4429 armasm_flags(){
4430     for flag; do
4431         case $flag in
4432             # Filter out MSVC cl.exe options from cflags that shouldn't
4433             # be passed to gas-preprocessor
4434             -M[TD]*)                                            ;;
4435             *)                  echo $flag                      ;;
4436         esac
4437    done
4438 }
4439
4440 cparser_flags(){
4441     for flag; do
4442         case $flag in
4443             -Wno-switch)             echo -Wno-switch-enum ;;
4444             -Wno-format-zero-length) ;;
4445             -Wdisabled-optimization) ;;
4446             -Wno-pointer-sign)       echo -Wno-other ;;
4447             *)                       echo $flag ;;
4448         esac
4449     done
4450 }
4451
4452 msvc_common_flags(){
4453     for flag; do
4454         case $flag in
4455             # In addition to specifying certain flags under the compiler
4456             # specific filters, they must be specified here as well or else the
4457             # generic catch all at the bottom will print the original flag.
4458             -Wall)                ;;
4459             -Wextra)              ;;
4460             -std=c*)              ;;
4461             # Common flags
4462             -fomit-frame-pointer) ;;
4463             -g)                   echo -Z7 ;;
4464             -fno-math-errno)      ;;
4465             -fno-common)          ;;
4466             -fno-signed-zeros)    ;;
4467             -fPIC)                ;;
4468             -mthumb)              ;;
4469             -march=*)             ;;
4470             -lz)                  echo zlib.lib ;;
4471             -lx264)               echo libx264.lib ;;
4472             -lstdc++)             ;;
4473             -l*)                  echo ${flag#-l}.lib ;;
4474             -LARGEADDRESSAWARE)   echo $flag ;;
4475             -L*)                  echo -libpath:${flag#-L} ;;
4476             -Wl,*)                ;;
4477             *)                    echo $flag ;;
4478         esac
4479     done
4480 }
4481
4482 msvc_flags(){
4483     msvc_common_flags "$@"
4484     for flag; do
4485         case $flag in
4486             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4487                                        -wd4554 ;;
4488             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4489                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4490                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4491                                        -wd4307 \
4492                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4493         esac
4494     done
4495 }
4496
4497 icl_flags(){
4498     msvc_common_flags "$@"
4499     for flag; do
4500         case $flag in
4501             # Despite what Intel's documentation says -Wall, which is supported
4502             # on Windows, does enable remarks so disable them here.
4503             -Wall)                echo $flag -Qdiag-disable:remark ;;
4504             -std=c99)             echo -Qstd=c99 ;;
4505             -flto)                echo -ipo ;;
4506         esac
4507     done
4508 }
4509
4510 icc_flags(){
4511     for flag; do
4512         case $flag in
4513             -flto)                echo -ipo ;;
4514             *)                    echo $flag ;;
4515         esac
4516     done
4517 }
4518
4519 suncc_flags(){
4520     for flag; do
4521         case $flag in
4522             -march=*|-mcpu=*)
4523                 case "${flag#*=}" in
4524                     native)                   echo -xtarget=native       ;;
4525                     v9|niagara)               echo -xarch=sparc          ;;
4526                     ultrasparc)               echo -xarch=sparcvis       ;;
4527                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4528                     i586|pentium)             echo -xchip=pentium        ;;
4529                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4530                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4531                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4532                     pentium4*)          echo -xtarget=pentium4           ;;
4533                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4534                     *-sse3)             echo -xarch=sse3                 ;;
4535                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4536                     bonnell)                   echo -xarch=ssse3         ;;
4537                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4538                     westmere)                  echo -xtarget=westmere    ;;
4539                     silvermont)                echo -xarch=sse4_2        ;;
4540                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4541                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4542                                                echo -xarch=avx           ;;
4543                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4544                     btver1)                    echo -xarch=amdsse4a      ;;
4545                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4546                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4547                     k8|opteron|athlon64|athlon-fx)
4548                                                echo -xarch=sse2a         ;;
4549                     athlon*)                   echo -xarch=pentium_proa  ;;
4550                 esac
4551                 ;;
4552             -std=c99)             echo -xc99              ;;
4553             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4554             -fPIC)                echo -KPIC -xcode=pic32 ;;
4555             -W*,*)                echo $flag              ;;
4556             -f*-*|-W*|-mimpure-text)                      ;;
4557             -shared)              echo -G                 ;;
4558             *)                    echo $flag              ;;
4559         esac
4560     done
4561 }
4562
4563 probe_cc(){
4564     pfx=$1
4565     _cc=$2
4566     first=$3
4567
4568     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4569     unset _ld_o _ldflags _ld_lib _ld_path
4570     unset _depflags _DEPCMD _DEPFLAGS
4571     _flags_filter=echo
4572
4573     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4574         true # no-op to avoid reading stdin in following checks
4575     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4576         _type=llvm_gcc
4577         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4578         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4579         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4580         _cflags_speed='-O3'
4581         _cflags_size='-Os'
4582     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4583         _type=gcc
4584         gcc_version=$($_cc --version | head -n1)
4585         gcc_basever=$($_cc -dumpversion)
4586         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4587         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4588         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4589         case $gcc_basever in
4590             2) ;;
4591             2.*) ;;
4592             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4593         esac
4594         if [ "$first" = true ]; then
4595             case $gcc_basever in
4596                 4.2*)
4597                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4598             esac
4599         fi
4600         _cflags_speed='-O3'
4601         _cflags_size='-Os'
4602     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4603         _type=icc
4604         _ident=$($_cc --version | head -n1)
4605         _depflags='-MMD'
4606         _cflags_speed='-O3'
4607         _cflags_size='-Os'
4608         _cflags_noopt='-O1'
4609         _flags_filter=icc_flags
4610     elif $_cc -v 2>&1 | grep -q xlc; then
4611         _type=xlc
4612         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4613         _cflags_speed='-O5'
4614         _cflags_size='-O5 -qcompact'
4615     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4616         test -d "$sysroot" || die "No valid sysroot specified."
4617         _type=armcc
4618         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4619         armcc_conf="$PWD/armcc.conf"
4620         $_cc --arm_linux_configure                 \
4621              --arm_linux_config_file="$armcc_conf" \
4622              --configure_sysroot="$sysroot"        \
4623              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4624              die "Error creating armcc configuration file."
4625         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4626         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4627         as_default="${cross_prefix}gcc"
4628         _depflags='-MMD'
4629         _cflags_speed='-O3'
4630         _cflags_size='-Os'
4631     elif $_cc -v 2>&1 | grep -q clang && ! $_cc -? > /dev/null 2>&1; then
4632         _type=clang
4633         _ident=$($_cc --version 2>/dev/null | head -n1)
4634         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4635         _cflags_speed='-O3'
4636         _cflags_size='-Oz'
4637     elif $_cc -V 2>&1 | grep -q Sun; then
4638         _type=suncc
4639         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4640         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4641         _DEPFLAGS='-xM1 -xc99'
4642         _ldflags='-std=c99'
4643         _cflags_speed='-O5'
4644         _cflags_size='-O5 -xspace'
4645         _flags_filter=suncc_flags
4646     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4647         _type=pathscale
4648         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4649         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4650         _cflags_speed='-O2'
4651         _cflags_size='-Os'
4652         _flags_filter='filter_out -Wdisabled-optimization'
4653     elif $_cc -v 2>&1 | grep -q Open64; then
4654         _type=open64
4655         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4656         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4657         _cflags_speed='-O2'
4658         _cflags_size='-Os'
4659         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4660     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4661         _type=armasm
4662         _ident=$($_cc | head -n1)
4663         # 4509: "This form of conditional instruction is deprecated"
4664         _flags="-nologo -ignore 4509"
4665         _flags_filter=armasm_flags
4666     elif $_cc 2>&1 | grep -q Intel; then
4667         _type=icl
4668         _ident=$($_cc 2>&1 | head -n1)
4669         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4670         # Not only is O3 broken on 13.x+ but it is slower on all previous
4671         # versions (tested) as well.
4672         _cflags_speed="-O2"
4673         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4674         if $_cc 2>&1 | grep -q Linker; then
4675             _ld_o='-out:$@'
4676         else
4677             _ld_o='-Fe$@'
4678         fi
4679         _cc_o='-Fo$@'
4680         _cc_e='-P'
4681         _flags_filter=icl_flags
4682         _ld_lib='lib%.a'
4683         _ld_path='-libpath:'
4684         # -Qdiag-error to make icl error when seeing certain unknown arguments
4685         _flags='-nologo -Qdiag-error:4044,10157'
4686         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4687         # with MSVC which enables it by default.
4688         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4689         disable stripping
4690     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4691         # lld can emulate multiple different linkers; in ms link.exe mode,
4692         # the -? parameter gives the help output which contains an identifyable
4693         # string, while it gives an error in other modes.
4694         _type=lld-link
4695         # The link.exe mode doesn't have a switch for getting the version,
4696         # but we can force it back to gnu mode and get the version from there.
4697         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4698         _ld_o='-out:$@'
4699         _flags_filter=msvc_flags
4700         _ld_lib='lib%.a'
4701         _ld_path='-libpath:'
4702     elif $_cc -nologo- 2>&1 | grep -q Microsoft || { $_cc -v 2>&1 | grep -q clang && $_cc -? > /dev/null 2>&1; }; then
4703         _type=msvc
4704         if $_cc -nologo- 2>&1 | grep -q Microsoft; then
4705             _ident=$($_cc 2>&1 | head -n1 | tr -d '\r')
4706         else
4707             _ident=$($_cc --version 2>/dev/null | head -n1 | tr -d '\r')
4708         fi
4709         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4710         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4711         _cflags_speed="-O2"
4712         _cflags_size="-O1"
4713         _cflags_noopt="-O1"
4714         if $_cc -nologo- 2>&1 | grep -q Linker; then
4715             _ld_o='-out:$@'
4716         else
4717             _ld_o='-Fe$@'
4718         fi
4719         _cc_o='-Fo$@'
4720         _cc_e='-P -Fi$@'
4721         _flags_filter=msvc_flags
4722         _ld_lib='lib%.a'
4723         _ld_path='-libpath:'
4724         _flags='-nologo'
4725         disable stripping
4726     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4727         _type=cparser
4728         _ident=$($_cc --version | head -n1)
4729         _depflags='-MMD'
4730         _cflags_speed='-O4'
4731         _cflags_size='-O2'
4732         _flags_filter=cparser_flags
4733     fi
4734
4735     eval ${pfx}_type=\$_type
4736     eval ${pfx}_ident=\$_ident
4737 }
4738
4739 set_ccvars(){
4740     eval ${1}_C=\${_cc_c-\${${1}_C}}
4741     eval ${1}_E=\${_cc_e-\${${1}_E}}
4742     eval ${1}_O=\${_cc_o-\${${1}_O}}
4743
4744     if [ -n "$_depflags" ]; then
4745         eval ${1}_DEPFLAGS=\$_depflags
4746     else
4747         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4748         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4749         eval DEP${1}FLAGS=\$_flags
4750     fi
4751 }
4752
4753 probe_cc cc "$cc" "true"
4754 cflags_filter=$_flags_filter
4755 cflags_speed=$_cflags_speed
4756 cflags_size=$_cflags_size
4757 cflags_noopt=$_cflags_noopt
4758 add_cflags $_flags $_cflags
4759 cc_ldflags=$_ldflags
4760 set_ccvars CC
4761 set_ccvars CXX
4762
4763 probe_cc hostcc "$host_cc"
4764 host_cflags_filter=$_flags_filter
4765 host_cflags_speed=$_cflags_speed
4766 add_host_cflags  $_flags $_cflags
4767 set_ccvars HOSTCC
4768
4769 test -n "$cc_type" && enable $cc_type ||
4770     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4771
4772 : ${as_default:=$cc}
4773 : ${objcc_default:=$cc}
4774 : ${dep_cc_default:=$cc}
4775 : ${ld_default:=$cc}
4776 : ${host_ld_default:=$host_cc}
4777 set_default ar as objcc dep_cc ld ln_s host_ld windres
4778
4779 probe_cc as "$as"
4780 asflags_filter=$_flags_filter
4781 add_asflags $_flags $_cflags
4782 set_ccvars AS
4783
4784 probe_cc objcc "$objcc"
4785 objcflags_filter=$_flags_filter
4786 add_objcflags $_flags $_cflags
4787 set_ccvars OBJC
4788
4789 probe_cc ld "$ld"
4790 ldflags_filter=$_flags_filter
4791 add_ldflags $_flags $_ldflags
4792 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4793 LD_O=${_ld_o-$LD_O}
4794 LD_LIB=${_ld_lib-$LD_LIB}
4795 LD_PATH=${_ld_path-$LD_PATH}
4796
4797 probe_cc hostld "$host_ld"
4798 host_ldflags_filter=$_flags_filter
4799 add_host_ldflags $_flags $_ldflags
4800 HOSTLD_O=${_ld_o-$HOSTLD_O}
4801
4802 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4803     probe_cc depcc "$dep_cc"
4804     CCDEP=${_DEPCMD:-$DEPCMD}
4805     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4806     DEPCCFLAGS=$_flags
4807 fi
4808
4809 if $ar 2>&1 | grep -q Microsoft; then
4810     arflags="-nologo"
4811     ar_o='-out:$@'
4812 elif $ar 2>&1 | grep -q "\[D\] "; then
4813     arflags="rcD"
4814     ar_o='$@'
4815 else
4816     arflags="rc"
4817     ar_o='$@'
4818 fi
4819
4820 add_cflags $extra_cflags
4821 add_cxxflags $extra_cxxflags
4822 add_objcflags $extra_objcflags
4823 add_asflags $extra_cflags
4824
4825 if test -n "$sysroot"; then
4826     case "$cc_type" in
4827         gcc|llvm_gcc|clang)
4828             add_cppflags --sysroot="$sysroot"
4829             add_ldflags --sysroot="$sysroot"
4830         ;;
4831     esac
4832 fi
4833
4834 if test "$cpu" = host; then
4835     enabled cross_compile &&
4836         warn "--cpu=host makes no sense when cross-compiling."
4837
4838     case "$cc_type" in
4839         gcc|llvm_gcc)
4840             check_native(){
4841                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4842                 sed -n "/cc1.*$1=/{
4843                             s/.*$1=\\([^ ]*\\).*/\\1/
4844                             p
4845                             q
4846                         }" $TMPE
4847             }
4848             cpu=$(check_native -march || check_native -mcpu)
4849         ;;
4850         clang)
4851             check_native(){
4852                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4853                 sed -n "/cc1.*-target-cpu /{
4854                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4855                             p
4856                             q
4857                         }" $TMPE
4858             }
4859             cpu=$(check_native -march)
4860         ;;
4861     esac
4862
4863     test "${cpu:-host}" = host &&
4864         die "--cpu=host not supported with compiler $cc"
4865 fi
4866
4867 # Deal with common $arch aliases
4868 case "$arch" in
4869     aarch64|arm64)
4870         arch="aarch64"
4871     ;;
4872     arm*|iPad*|iPhone*)
4873         arch="arm"
4874     ;;
4875     mips*|IP*)
4876         case "$arch" in
4877         *el)
4878             add_cppflags -EL
4879             add_ldflags -EL
4880         ;;
4881         *eb)
4882             add_cppflags -EB
4883             add_ldflags -EB
4884         ;;
4885         esac
4886         arch="mips"
4887     ;;
4888     parisc*|hppa*)
4889         arch="parisc"
4890     ;;
4891     "Power Macintosh"|ppc*|powerpc*)
4892         arch="ppc"
4893     ;;
4894     s390|s390x)
4895         arch="s390"
4896     ;;
4897     sh4|sh)
4898         arch="sh4"
4899     ;;
4900     sun4*|sparc*)
4901         arch="sparc"
4902     ;;
4903     tilegx|tile-gx)
4904         arch="tilegx"
4905     ;;
4906     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4907         arch="x86"
4908     ;;
4909 esac
4910
4911 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4912 enable $arch
4913
4914 # Add processor-specific flags
4915 if enabled aarch64; then
4916
4917     case $cpu in
4918         armv*)
4919             cpuflags="-march=$cpu"
4920         ;;
4921         *)
4922             cpuflags="-mcpu=$cpu"
4923         ;;
4924     esac
4925
4926 elif enabled alpha; then
4927
4928     cpuflags="-mcpu=$cpu"
4929
4930 elif enabled arm; then
4931
4932     check_arm_arch() {
4933         test_cpp_condition stddef.h \
4934             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4935             $cpuflags
4936     }
4937
4938     probe_arm_arch() {
4939         if   check_arm_arch 4;        then echo armv4
4940         elif check_arm_arch 4T;       then echo armv4t
4941         elif check_arm_arch 5;        then echo armv5
4942         elif check_arm_arch 5E;       then echo armv5e
4943         elif check_arm_arch 5T;       then echo armv5t
4944         elif check_arm_arch 5TE;      then echo armv5te
4945         elif check_arm_arch 5TEJ;     then echo armv5te
4946         elif check_arm_arch 6;        then echo armv6
4947         elif check_arm_arch 6J;       then echo armv6j
4948         elif check_arm_arch 6K;       then echo armv6k
4949         elif check_arm_arch 6Z;       then echo armv6z
4950         elif check_arm_arch 6KZ;      then echo armv6zk
4951         elif check_arm_arch 6ZK;      then echo armv6zk
4952         elif check_arm_arch 6T2;      then echo armv6t2
4953         elif check_arm_arch 7;        then echo armv7
4954         elif check_arm_arch 7A  7_A;  then echo armv7-a
4955         elif check_arm_arch 7S;       then echo armv7-a
4956         elif check_arm_arch 7R  7_R;  then echo armv7-r
4957         elif check_arm_arch 7M  7_M;  then echo armv7-m
4958         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4959         elif check_arm_arch 8A  8_A;  then echo armv8-a
4960         fi
4961     }
4962
4963     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4964
4965     case $cpu in
4966         armv*)
4967             cpuflags="-march=$cpu"
4968             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4969         ;;
4970         *)
4971             cpuflags="-mcpu=$cpu"
4972             case $cpu in
4973                 cortex-a*)                               subarch=armv7a  ;;
4974                 cortex-r*)                               subarch=armv7r  ;;
4975                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4976                 arm11*)                                  subarch=armv6   ;;
4977                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4978                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4979                 *)                             subarch=$(probe_arm_arch) ;;
4980             esac
4981         ;;
4982     esac
4983
4984     case "$subarch" in
4985         armv5t*)    enable fast_clz                ;;
4986         armv[6-8]*)
4987             enable fast_clz
4988             disabled fast_unaligned || enable fast_unaligned
4989             ;;
4990     esac
4991
4992 elif enabled avr32; then
4993
4994     case $cpu in
4995         ap7[02]0[0-2])
4996             subarch="avr32_ap"
4997             cpuflags="-mpart=$cpu"
4998         ;;
4999         ap)
5000             subarch="avr32_ap"
5001             cpuflags="-march=$cpu"
5002         ;;
5003         uc3[ab]*)
5004             subarch="avr32_uc"
5005             cpuflags="-mcpu=$cpu"
5006         ;;
5007         uc)
5008             subarch="avr32_uc"
5009             cpuflags="-march=$cpu"
5010         ;;
5011     esac
5012
5013 elif enabled bfin; then
5014
5015     cpuflags="-mcpu=$cpu"
5016
5017 elif enabled mips; then
5018
5019     if [ "$cpu" != "generic" ]; then
5020         disable mips32r2
5021         disable mips32r5
5022         disable mips64r2
5023         disable mips32r6
5024         disable mips64r6
5025         disable loongson2
5026         disable loongson3
5027         disable mipsdsp
5028         disable mipsdspr2
5029         disable msa
5030         disable mmi
5031
5032         cpuflags="-march=$cpu"
5033
5034         case $cpu in
5035             # General ISA levels
5036             mips1|mips3)
5037             ;;
5038             mips32r2)
5039                 enable msa
5040                 enable mips32r2
5041             ;;
5042             mips32r5)
5043                 enable msa
5044                 enable mips32r2
5045                 enable mips32r5
5046             ;;
5047             mips64r2|mips64r5)
5048                 enable msa
5049                 enable mmi
5050                 enable mips64r2
5051                 enable loongson3
5052             ;;
5053             # Cores from MIPS(MTI)
5054             24kc)
5055                 disable mipsfpu
5056                 enable mips32r2
5057             ;;
5058             24kf*|24kec|34kc|74Kc|1004kc)
5059                 enable mips32r2
5060             ;;
5061             24kef*|34kf*|1004kf*)
5062                 enable mipsdsp
5063                 enable mips32r2
5064             ;;
5065             p5600)
5066                 enable msa
5067                 enable mips32r2
5068                 enable mips32r5
5069                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
5070             ;;
5071             i6400)
5072                 enable mips64r6
5073                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
5074             ;;
5075             p6600)
5076                 enable mips64r6
5077                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
5078             ;;
5079             # Cores from Loongson
5080             loongson2e|loongson2f|loongson3*)
5081                 enable mmi
5082                 enable local_aligned
5083                 enable simd_align_16
5084                 enable fast_64bit
5085                 enable fast_clz
5086                 enable fast_cmov
5087                 enable fast_unaligned
5088                 disable aligned_stack
5089                 # When gcc version less than 5.3.0, add -fno-expensive-optimizations flag.
5090                 if test "$cc_type" = "gcc"; then
5091                     case $gcc_basever in
5092                         2|2.*|3.*|4.*|5.0|5.1|5.2)
5093                         expensive_optimization_flag="-fno-expensive-optimizations"
5094                         ;;
5095                         *)
5096                         expensive_optimization_flag=""
5097                         ;;
5098                     esac
5099                 fi
5100
5101                 case $cpu in
5102                     loongson3*)
5103                         enable loongson3
5104                         enable msa
5105                         cpuflags="-march=loongson3a -mhard-float $expensive_optimization_flag"
5106                     ;;
5107                     loongson2e)
5108                         enable loongson2
5109                         cpuflags="-march=loongson2e -mhard-float $expensive_optimization_flag"
5110                     ;;
5111                     loongson2f)
5112                         enable loongson2
5113                         cpuflags="-march=loongson2f -mhard-float $expensive_optimization_flag"
5114                     ;;
5115                 esac
5116             ;;
5117             *)
5118                 warn "unknown MIPS CPU"
5119             ;;
5120         esac
5121
5122     else
5123         disable mipsdsp
5124         disable mipsdspr2
5125         # Disable DSP stuff for generic CPU, it can't be detected at runtime.
5126         warn 'generic cpu selected'
5127     fi
5128
5129 elif enabled ppc; then
5130
5131     disable ldbrx
5132
5133     case $(tolower $cpu) in
5134         601|ppc601|powerpc601)
5135             cpuflags="-mcpu=601"
5136             disable altivec
5137         ;;
5138         603*|ppc603*|powerpc603*)
5139             cpuflags="-mcpu=603"
5140             disable altivec
5141         ;;
5142         604*|ppc604*|powerpc604*)
5143             cpuflags="-mcpu=604"
5144             disable altivec
5145         ;;
5146         g3|75*|ppc75*|powerpc75*)
5147             cpuflags="-mcpu=750"
5148             disable altivec
5149         ;;
5150         g4|745*|ppc745*|powerpc745*)
5151             cpuflags="-mcpu=7450"
5152             disable vsx
5153         ;;
5154         74*|ppc74*|powerpc74*)
5155             cpuflags="-mcpu=7400"
5156             disable vsx
5157         ;;
5158         g5|970|ppc970|powerpc970)
5159             cpuflags="-mcpu=970"
5160             disable vsx
5161         ;;
5162         power[3-6]*)
5163             cpuflags="-mcpu=$cpu"
5164             disable vsx
5165         ;;
5166         power[7-8]*)
5167             cpuflags="-mcpu=$cpu"
5168         ;;
5169         cell)
5170             cpuflags="-mcpu=cell"
5171             enable ldbrx
5172             disable vsx
5173         ;;
5174         e500mc)
5175             cpuflags="-mcpu=e500mc"
5176             disable altivec
5177         ;;
5178         e500v2)
5179             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
5180             disable altivec
5181             disable dcbzl
5182         ;;
5183         e500)
5184             cpuflags="-mcpu=8540 -mhard-float"
5185             disable altivec
5186             disable dcbzl
5187         ;;
5188     esac
5189
5190 elif enabled sparc; then
5191
5192     case $cpu in
5193         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
5194             cpuflags="-mcpu=$cpu"
5195         ;;
5196         ultrasparc*|niagara[234])
5197             cpuflags="-mcpu=$cpu"
5198         ;;
5199     esac
5200
5201 elif enabled x86; then
5202
5203     case $cpu in
5204         i[345]86|pentium)
5205             cpuflags="-march=$cpu"
5206             disable i686
5207             disable mmx
5208         ;;
5209         # targets that do NOT support nopl and conditional mov (cmov)
5210         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
5211             cpuflags="-march=$cpu"
5212             disable i686
5213         ;;
5214         # targets that do support nopl and conditional mov (cmov)
5215         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
5216         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
5217         |amdfam10|barcelona|b[dt]ver*|znver*)
5218             cpuflags="-march=$cpu"
5219             enable i686
5220             enable fast_cmov
5221         ;;
5222         # targets that do support conditional mov but on which it's slow
5223         pentium4|pentium4m|prescott|nocona)
5224             cpuflags="-march=$cpu"
5225             enable i686
5226             disable fast_cmov
5227         ;;
5228     esac
5229
5230 fi
5231
5232 if [ "$cpu" != generic ]; then
5233     add_cflags  $cpuflags
5234     add_asflags $cpuflags
5235     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
5236 fi
5237
5238 # compiler sanity check
5239 test_exec <<EOF
5240 int main(void){ return 0; }
5241 EOF
5242 if test "$?" != 0; then
5243     echo "$cc is unable to create an executable file."
5244     if test -z "$cross_prefix" && ! enabled cross_compile ; then
5245         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
5246         echo "Only do this if you know what cross compiling means."
5247     fi
5248     die "C compiler test failed."
5249 fi
5250
5251 add_cppflags -D_ISOC99_SOURCE
5252 add_cxxflags -D__STDC_CONSTANT_MACROS
5253 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
5254
5255 # some compilers silently accept -std=c11, so we also need to check that the
5256 # version macro is defined properly
5257 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
5258     add_cflags -std=c11 ||
5259     check_cflags -std=c99
5260
5261 check_cppflags -D_FILE_OFFSET_BITS=64
5262 check_cppflags -D_LARGEFILE_SOURCE
5263
5264 add_host_cppflags -D_ISOC99_SOURCE
5265 check_host_cflags -std=c99
5266 check_host_cflags -Wall
5267 check_host_cflags $host_cflags_speed
5268
5269 check_64bit(){
5270     arch32=$1
5271     arch64=$2
5272     expr=${3:-'sizeof(void *) > 4'}
5273     test_code cc "" "int test[2*($expr) - 1]" &&
5274         subarch=$arch64 || subarch=$arch32
5275     enable $subarch
5276 }
5277
5278 case "$arch" in
5279     aarch64|alpha|ia64)
5280         enabled shared && enable_weak pic
5281     ;;
5282     mips)
5283         check_64bit mips mips64 '_MIPS_SIM > 1'
5284         enabled shared && enable_weak pic
5285     ;;
5286     parisc)
5287         check_64bit parisc parisc64
5288         enabled shared && enable_weak pic
5289     ;;
5290     ppc)
5291         check_64bit ppc ppc64
5292         enabled shared && enable_weak pic
5293     ;;
5294     s390)
5295         check_64bit s390 s390x
5296         enabled shared && enable_weak pic
5297     ;;
5298     sparc)
5299         check_64bit sparc sparc64
5300         enabled shared && enable_weak pic
5301     ;;
5302     x86)
5303         check_64bit x86_32 x86_64
5304         # Treat x32 as x64 for now. Note it also needs pic if shared
5305         test "$subarch" = "x86_32" && test_cpp_condition stddef.h 'defined(__x86_64__)' &&
5306             subarch=x86_64 && enable x86_64 && disable x86_32
5307         if enabled x86_64; then
5308             enabled shared && enable_weak pic
5309             objformat=elf64
5310         fi
5311     ;;
5312 esac
5313
5314 # OS specific
5315 case $target_os in
5316     aix)
5317         SHFLAGS=-shared
5318         add_cppflags '-I\$(SRC_PATH)/compat/aix'
5319         enabled shared && add_ldflags -Wl,-brtl
5320         arflags='-Xany -r -c'
5321         striptype=""
5322         ;;
5323     android)
5324         disable symver
5325         enable section_data_rel_ro
5326         add_cflags -fPIE
5327         add_ldexeflags -fPIE -pie
5328         SLIB_INSTALL_NAME='$(SLIBNAME)'
5329         SLIB_INSTALL_LINKS=
5330         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
5331         ;;
5332     haiku)
5333         prefix_default="/boot/common"
5334         network_extralibs="-lnetwork"
5335         host_extralibs=
5336         ;;
5337     sunos)
5338         SHFLAGS='-shared -Wl,-h,$$(@F)'
5339         enabled x86 && append SHFLAGS -mimpure-text
5340         network_extralibs="-lsocket -lnsl"
5341         add_cppflags -D__EXTENSIONS__
5342         # When using suncc to build, the Solaris linker will mark
5343         # an executable with each instruction set encountered by
5344         # the Solaris assembler.  As our libraries contain their own
5345         # guards for processor-specific code, instead suppress
5346         # generation of the HWCAPS ELF section on Solaris x86 only.
5347         enabled_all suncc x86 &&
5348             echo "hwcap_1 = OVERRIDE;" > mapfile &&
5349             add_ldflags -Wl,-M,mapfile
5350         nm_default='nm -P -g'
5351         striptype=""
5352         version_script='-M'
5353         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
5354         ;;
5355     netbsd)
5356         disable symver
5357         oss_indev_extralibs="-lossaudio"
5358         oss_outdev_extralibs="-lossaudio"
5359         enabled gcc || check_ldflags -Wl,-zmuldefs
5360         ;;
5361     openbsd|bitrig)
5362         disable symver
5363         enable section_data_rel_ro
5364         striptype=""
5365         SHFLAGS='-shared'
5366         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
5367         SLIB_INSTALL_LINKS=
5368         oss_indev_extralibs="-lossaudio"
5369         oss_outdev_extralibs="-lossaudio"
5370         ;;
5371     dragonfly)
5372         disable symver
5373         ;;
5374     freebsd)
5375         ;;
5376     bsd/os)
5377         add_extralibs -lpoll -lgnugetopt
5378         strip="strip -d"
5379         ;;
5380     darwin)
5381         enabled ppc && add_asflags -force_cpusubtype_ALL
5382         install_name_dir_default='$(SHLIBDIR)'
5383         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
5384         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
5385         strip="${strip} -x"
5386         add_ldflags -Wl,-dynamic,-search_paths_first
5387         check_cflags -Werror=partial-availability
5388         SLIBSUF=".dylib"
5389         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
5390         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
5391         enabled x86_64 && objformat="macho64" || objformat="macho32"
5392         enabled_any pic shared x86_64 ||
5393             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
5394         check_headers dispatch/dispatch.h &&
5395             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
5396         if test -n "$sysroot"; then
5397             is_in -isysroot $cc $CPPFLAGS $CFLAGS || check_cppflags -isysroot $sysroot
5398             is_in -isysroot $ld $LDFLAGS          || check_ldflags  -isysroot $sysroot
5399         fi
5400         version_script='-exported_symbols_list'
5401         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
5402         # Workaround for Xcode 11 -fstack-check bug
5403         if enabled clang; then
5404             clang_version=$($cc -dumpversion)
5405             test ${clang_version%%.*} -eq 11 && add_cflags -fno-stack-check
5406         fi
5407         ;;
5408     msys*)
5409         die "Native MSYS builds are discouraged, please use the MINGW environment."
5410         ;;
5411     mingw32*|mingw64*)
5412         target_os=mingw32
5413         LIBTARGET=i386
5414         if enabled x86_64; then
5415             LIBTARGET="i386:x86-64"
5416         elif enabled arm; then
5417             LIBTARGET="arm"
5418         elif enabled aarch64; then
5419             LIBTARGET="arm64"
5420         fi
5421         if enabled shared; then
5422             # Cannot build both shared and static libs when using dllimport.
5423             disable static
5424         fi
5425         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5426         enabled x86_32 && check_ldflags -Wl,--large-address-aware
5427         shlibdir_default="$bindir_default"
5428         SLIBPREF=""
5429         SLIBSUF=".dll"
5430         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5431         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5432         if test_cmd lib.exe -list; then
5433             SLIB_EXTRA_CMD=-'lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5434             if enabled x86_64; then
5435                 LIBTARGET=x64
5436             fi
5437         else
5438             SLIB_EXTRA_CMD=-'$(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
5439         fi
5440         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5441         SLIB_INSTALL_LINKS=
5442         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5443         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5444         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" AR="$(AR_CMD)" NM="$(NM_CMD)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5445         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--disable-auto-image-base $$(@:$(SLIBSUF)=.def)'
5446         enabled x86_64 && objformat="win64" || objformat="win32"
5447         dlltool="${cross_prefix}dlltool"
5448         ranlib=:
5449         enable dos_paths
5450         check_ldflags -Wl,--nxcompat,--dynamicbase
5451         # Lets work around some stupidity in binutils.
5452         # ld will strip relocations from executables even though we need them
5453         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
5454         # however ld then forgets what the entry point should be (oops) so we
5455         # have to manually (re)set it.
5456         if enabled x86_32; then
5457             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
5458         elif enabled x86_64; then
5459             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
5460             check_ldflags -Wl,--high-entropy-va # binutils 2.25
5461             # Set image base >4GB for extra entropy with HEASLR
5462             add_ldexeflags -Wl,--image-base,0x140000000
5463             append SHFLAGS -Wl,--image-base,0x180000000
5464         fi
5465         ;;
5466     win32|win64)
5467         disable symver
5468         if enabled shared; then
5469             # Link to the import library instead of the normal static library
5470             # for shared libs.
5471             LD_LIB='%.lib'
5472             # Cannot build both shared and static libs with MSVC or icl.
5473             disable static
5474         fi
5475         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
5476         shlibdir_default="$bindir_default"
5477         SLIBPREF=""
5478         SLIBSUF=".dll"
5479         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5480         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5481         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5482         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5483         SLIB_INSTALL_LINKS=
5484         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5485         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5486         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5487         enabled x86_64 && objformat="win64" || objformat="win32"
5488         ranlib=:
5489         enable dos_paths
5490         ;;
5491     cygwin*)
5492         target_os=cygwin
5493         shlibdir_default="$bindir_default"
5494         SLIBPREF="cyg"
5495         SLIBSUF=".dll"
5496         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5497         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5498         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5499         SLIB_INSTALL_LINKS=
5500         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
5501         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
5502         enabled x86_64 && objformat="win64" || objformat="win32"
5503         enable dos_paths
5504         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5505         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5506         ;;
5507     *-dos|freedos|opendos)
5508         network_extralibs="-lsocket"
5509         objformat="coff"
5510         enable dos_paths
5511         ;;
5512     linux)
5513         enable section_data_rel_ro
5514         enabled_any arm aarch64 && enable_weak linux_perf
5515         ;;
5516     irix*)
5517         target_os=irix
5518         ranlib="echo ignoring ranlib"
5519         ;;
5520     os/2*)
5521         strip="lxlite -CS"
5522         striptype=""
5523         objformat="aout"
5524         add_cppflags -D_GNU_SOURCE
5525         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
5526         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
5527         LIBSUF="_s.a"
5528         SLIBPREF=""
5529         SLIBSUF=".dll"
5530         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5531         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
5532         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
5533             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
5534             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
5535             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
5536             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
5537         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
5538             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
5539         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5540         SLIB_INSTALL_LINKS=
5541         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
5542         enable dos_paths
5543         enable_weak os2threads
5544         ;;
5545     gnu/kfreebsd)
5546         add_cppflags -D_BSD_SOURCE
5547         ;;
5548     gnu)
5549         ;;
5550     qnx)
5551         add_cppflags -D_QNX_SOURCE
5552         network_extralibs="-lsocket"
5553         ;;
5554     symbian)
5555         SLIBSUF=".dll"
5556         enable dos_paths
5557         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
5558         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
5559         add_ldflags -Wl,--target1-abs,--no-undefined \
5560                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
5561                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
5562         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
5563                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
5564                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
5565         ;;
5566     minix)
5567         ;;
5568     none)
5569         ;;
5570     *)
5571         die "Unknown OS '$target_os'."
5572         ;;
5573 esac
5574
5575 # test if creating links works
5576 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5577 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5578 mkdir "$link_dest"
5579 $ln_s "$link_dest" "$link_name"
5580 touch "$link_dest/test_file"
5581 if [ "$source_path" != "." ] && [ "$source_path" != "src" ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5582     # create link to source path
5583     [ -e src ] && rm src
5584     $ln_s "$source_path" src
5585     source_link=src
5586 else
5587     # creating directory links doesn't work
5588     # fall back to using the full source path
5589     source_link="$source_path"
5590 fi
5591 # cleanup
5592 rm -r "$link_dest"
5593 rm -r "$link_name"
5594
5595 # determine libc flavour
5596
5597 probe_libc(){
5598     pfx=$1
5599     pfx_no_=${pfx%_}
5600     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5601     if test_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5602         eval ${pfx}libc_type=uclibc
5603         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5604     elif test_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5605         eval ${pfx}libc_type=glibc
5606         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5607     # MinGW headers can be installed on Cygwin, so check for newlib first.
5608     elif test_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5609         eval ${pfx}libc_type=newlib
5610         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
5611     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5612     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5613         eval ${pfx}libc_type=mingw64
5614         if test_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5615             add_compat msvcrt/snprintf.o
5616             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5617         fi
5618         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5619         eval test \$${pfx_no_}cc_type = "gcc" &&
5620             add_${pfx}cppflags -D__printf__=__gnu_printf__
5621         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5622             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5623         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5624     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5625          test_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5626         eval ${pfx}libc_type=mingw32
5627         test_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5628             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5629             die "ERROR: MinGW32 runtime version must be >= 3.15."
5630         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5631         test_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
5632             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5633         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5634             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5635         eval test \$${pfx_no_}cc_type = "gcc" &&
5636             add_${pfx}cppflags -D__printf__=__gnu_printf__
5637         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5638     elif test_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5639         eval ${pfx}libc_type=msvcrt
5640         if test_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5641             if [ "$pfx" = host_ ]; then
5642                 add_host_cppflags -Dsnprintf=_snprintf
5643             else
5644                 add_compat strtod.o strtod=avpriv_strtod
5645                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5646                                              _snprintf=avpriv_snprintf  \
5647                                              vsnprintf=avpriv_vsnprintf
5648             fi
5649         fi
5650         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5651         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5652         # 0x601 by default unless something else is set by the user.
5653         # This can easily lead to us detecting functions only present
5654         # in such new versions and producing binaries requiring windows 7.0.
5655         # Therefore explicitly set the default to Vista unless the user has
5656         # set something else on the command line.
5657         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5658         # family. For these cases, configure is free to use any functions
5659         # found in the SDK headers by default. (Alternatively, we could force
5660         # _WIN32_WINNT to 0x0602 in that case.)
5661         test_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5662             { test_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0600; }
5663 #ifdef WINAPI_FAMILY
5664 #include <winapifamily.h>
5665 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5666 #error not desktop
5667 #endif
5668 #endif
5669 EOF
5670         if [ "$pfx" = "" ]; then
5671             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5672             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5673         fi
5674     elif test_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5675         eval ${pfx}libc_type=klibc
5676     elif test_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5677         eval ${pfx}libc_type=bionic
5678     elif test_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5679         eval ${pfx}libc_type=solaris
5680         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5681     elif test_${pfx}cpp_condition sys/version.h "defined __DJGPP__"; then
5682         eval ${pfx}libc_type=djgpp
5683         add_cppflags -U__STRICT_ANSI__
5684         add_cflags "-include $source_path/compat/djgpp/math.h"
5685         add_compat djgpp/math.o
5686     fi
5687     test_${pfx}cc <<EOF
5688 #include <time.h>
5689 void *v = localtime_r;
5690 EOF
5691 test "$?" != 0 && test_${pfx}cc -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 <<EOF && add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5692 #include <time.h>
5693 void *v = localtime_r;
5694 EOF
5695
5696     eval test -n "\${${pfx}libc_type}" && enable ${pfx}libc_${libc_type}
5697 }
5698
5699 probe_libc
5700 probe_libc host_
5701
5702 # hacks for compiler/libc/os combinations
5703
5704 case $libc_type in
5705     bionic)
5706         add_compat strtod.o strtod=avpriv_strtod
5707         ;;
5708 esac
5709
5710 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5711     add_cppflags '-I\$(SRC_PATH)/compat/float'
5712
5713 test_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5714
5715 set_default libdir
5716 : ${shlibdir_default:="$libdir"}
5717 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5718
5719 set_default $PATHS_LIST
5720 set_default nm
5721
5722 disabled optimizations || enabled ossfuzz || check_cflags -fomit-frame-pointer
5723
5724 enable_weak_pic() {
5725     disabled pic && return
5726     enable pic
5727     add_cppflags -DPIC
5728     case "$target_os" in
5729     mingw*|cygwin*|win*)
5730         ;;
5731     *)
5732         add_cflags -fPIC
5733         add_asflags -fPIC
5734         ;;
5735     esac
5736 }
5737
5738 enabled pic && enable_weak_pic
5739
5740 test_cc <<EOF || die "Symbol mangling check failed."
5741 int ff_extern;
5742 EOF
5743 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5744 extern_prefix=${sym%%ff_extern*}
5745
5746 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
5747
5748 for restrict_keyword in restrict __restrict__ __restrict ""; do
5749     test_code cc "" "char * $restrict_keyword p" && break
5750 done
5751
5752 check_cc pragma_deprecated "" '_Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"")'
5753
5754 # The global variable ensures the bits appear unchanged in the object file.
5755 test_cc <<EOF || die "endian test failed"
5756 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5757 EOF
5758 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5759
5760 check_cc const_nan math.h "struct { double d; } static const bar[] = { { NAN } }"
5761
5762 if ! enabled ppc64 || enabled bigendian; then
5763     disable vsx
5764 fi
5765
5766 check_gas() {
5767     log "check_gas using '$as' as AS"
5768     # :vararg is used on aarch64, arm and ppc altivec
5769     check_as vararg "
5770 .macro m n, y:vararg=0
5771 \n: .int \y
5772 .endm
5773 m x" || return 1
5774     # .altmacro is only used in arm asm
5775     ! enabled arm || check_as gnu_as ".altmacro"
5776 }
5777
5778 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5779     nogas=:
5780     enabled_any arm aarch64 && nogas=die
5781     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5782     as_noop=-v
5783
5784     case $as_type in
5785         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5786         gcc)  gaspp_as_type=gas ;;
5787         *)    gaspp_as_type=$as_type ;;
5788     esac
5789
5790     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5791
5792     test "${as#*gas-preprocessor.pl}" != "$as" ||
5793     test_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5794         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5795
5796     if ! check_gas ; then
5797         as=${gas:=$as}
5798         check_gas || \
5799             $nogas "GNU assembler not found, install/update gas-preprocessor"
5800     fi
5801
5802     check_as as_func ".func test
5803                       .endfunc"
5804 fi
5805
5806 check_inline_asm inline_asm_labels '"1:\n"'
5807
5808 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5809
5810 if enabled aarch64; then
5811     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5812     # internal assembler in clang 3.3 does not support this instruction
5813     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5814     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5815
5816     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5817
5818 elif enabled alpha; then
5819
5820     check_cflags -mieee
5821
5822 elif enabled arm; then
5823
5824     enabled msvc && check_cpp_condition thumb stddef.h "defined _M_ARMT"
5825     test_cpp_condition stddef.h "defined __thumb__" && test_cc <<EOF && enable_weak thumb
5826 float func(float a, float b){ return a+b; }
5827 EOF
5828     enabled thumb && check_cflags -mthumb || check_cflags -marm
5829
5830     if check_cpp_condition vfp_args stddef.h "defined __ARM_PCS_VFP"; then
5831         :
5832     elif check_cpp_condition vfp_args stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5833         :
5834     elif ! test_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5835         case "${cross_prefix:-$cc}" in
5836             *hardfloat*) enable vfp_args; fpabi=vfp ;;
5837             *) check_ld "cc" vfp_args <<EOF && fpabi=vfp || fpabi=soft ;;
5838 __asm__ (".eabi_attribute 28, 1");
5839 int main(void) { return 0; }
5840 EOF
5841         esac
5842         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5843     fi
5844
5845     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5846     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5847     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5848     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5849     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5850     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5851     enabled setend  && check_insn setend  'setend be'
5852
5853     [ $target_os = linux ] || [ $target_os = android ] ||
5854         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5855             $ARCH_EXT_LIST_ARM
5856
5857     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5858
5859     check_as as_arch_directive ".arch armv7-a"
5860     check_as as_dn_directive   "ra .dn d0.i16"
5861     check_as as_fpu_directive  ".fpu neon"
5862
5863     # llvm's integrated assembler supports .object_arch from llvm 3.5
5864     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
5865         check_as as_object_arch ".object_arch armv4"
5866
5867     # MS armasm fails to assemble our PIC constructs
5868     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5869
5870 elif enabled mips; then
5871
5872     # Check toolchain ISA level
5873     if enabled mips64; then
5874         enabled mips64r6 && check_inline_asm mips64r6 '"dlsa $0, $0, $0, 1"' &&
5875             disable mips64r2
5876
5877         enabled mips64r2 && check_inline_asm mips64r2 '"dext $0, $0, 0, 1"'
5878
5879         disable mips32r6 && disable mips32r5 && disable mips32r2
5880     else
5881         enabled mips32r6 && check_inline_asm mips32r6 '"aui $0, $0, 0"' &&
5882             disable mips32r5 && disable mips32r2
5883
5884         enabled mips32r5 && check_inline_asm mips32r5 '"eretnc"'
5885         enabled mips32r2 && check_inline_asm mips32r2 '"ext $0, $0, 0, 1"'
5886
5887         disable mips64r6 && disable mips64r5 && disable mips64r2
5888     fi
5889
5890     enabled mipsfpu && check_inline_asm mipsfpu '"cvt.d.l $f0, $f2"'
5891     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5892
5893     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5894     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5895
5896     # MSA and MSA2 can be detected at runtime so we supply extra flags here
5897     enabled mipsfpu && enabled msa && check_inline_asm msa '"addvi.b $w0, $w1, 1"' '-mmsa' && append MSAFLAGS '-mmsa'
5898     enabled msa && enabled msa2 && check_inline_asm msa2 '"nxbits.any.b $w0, $w0"' '-mmsa2' && append MSAFLAGS '-mmsa2'
5899
5900     # loongson2 have no switch cflag so we can only probe toolchain ability
5901     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"' && disable loongson3
5902
5903     # loongson3 is paired with MMI
5904     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"' '-mloongson-ext' && append MMIFLAGS '-mloongson-ext'
5905
5906     # MMI can be detected at runtime too
5907     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"' '-mloongson-mmi' && append MMIFLAGS '-mloongson-mmi'
5908
5909     if enabled bigendian && enabled msa; then
5910         disable msa
5911     fi
5912
5913 elif enabled parisc; then
5914
5915     if enabled gcc; then
5916         case $($cc -dumpversion) in
5917             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5918         esac
5919     fi
5920
5921 elif enabled ppc; then
5922
5923     enable local_aligned
5924
5925     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5926     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5927     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5928     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5929
5930     if enabled altivec; then
5931         check_cflags -maltivec -mabi=altivec
5932
5933         # check if our compiler supports Motorola AltiVec C API
5934         check_cc altivec altivec.h "vector signed int v1 = (vector signed int) { 0 };
5935                                     vector signed int v2 = (vector signed int) { 1 };
5936                                     v1 = vec_add(v1, v2);"
5937
5938         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5939     fi
5940
5941     if enabled vsx; then
5942         check_cflags -mvsx &&
5943         check_cc vsx altivec.h "int v[4] = { 0 };
5944                                 vector signed int v1 = vec_vsx_ld(0, v);"
5945     fi
5946
5947     if enabled power8; then
5948         check_cpp_condition power8 "altivec.h" "defined(_ARCH_PWR8)"
5949     fi
5950
5951 elif enabled x86; then
5952
5953     check_builtin rdtsc    intrin.h   "__rdtsc()"
5954     check_builtin mm_empty mmintrin.h "_mm_empty()"
5955
5956     enable local_aligned
5957
5958     # check whether EBP is available on x86
5959     # As 'i' is stored on the stack, this program will crash
5960     # if the base pointer is used to access it because the
5961     # base pointer is cleared in the inline assembly code.
5962     check_exec_crash <<EOF && enable ebp_available
5963 volatile int i=0;
5964 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5965 return i;
5966 EOF
5967
5968     # check whether EBX is available on x86
5969     check_inline_asm ebx_available '""::"b"(0)' &&
5970         check_inline_asm ebx_available '"":::"%ebx"'
5971
5972     # check whether xmm clobbers are supported
5973     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5974
5975     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5976         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5977
5978     # check whether binutils is new enough to compile SSSE3/MMXEXT
5979     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5980     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5981
5982     probe_x86asm(){
5983         x86asmexe_probe=$1
5984         if test_cmd $x86asmexe_probe -v; then
5985             x86asmexe=$x86asmexe_probe
5986             x86asm_type=nasm
5987             x86asm_debug="-g -F dwarf"
5988             X86ASMDEP=
5989             X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
5990         elif test_cmd $x86asmexe_probe --version; then
5991             x86asmexe=$x86asmexe_probe
5992             x86asm_type=yasm
5993             x86asm_debug="-g dwarf2"
5994             X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
5995             X86ASM_DEPFLAGS=
5996         fi
5997         check_x86asm x86asm "movbe ecx, [5]"
5998     }
5999
6000     if ! disabled_any asm mmx x86asm; then
6001         disable x86asm
6002         for program in $x86asmexe nasm yasm; do
6003             probe_x86asm $program && break
6004         done
6005         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
6006         X86ASMFLAGS="-f $objformat"
6007         enabled pic               && append X86ASMFLAGS "-DPIC"
6008         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
6009         case "$objformat" in
6010             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
6011         esac
6012
6013         enabled avx512 && check_x86asm avx512_external "vmovdqa32 [eax]{k1}{z}, zmm0"
6014         enabled avx2   && check_x86asm avx2_external   "vextracti128 xmm0, ymm0, 0"
6015         enabled xop    && check_x86asm xop_external    "vpmacsdd xmm0, xmm1, xmm2, xmm3"
6016         enabled fma4   && check_x86asm fma4_external   "vfmaddps ymm0, ymm1, ymm2, ymm3"
6017         check_x86asm cpunop          "CPU amdnop"
6018     fi
6019
6020     case "$cpu" in
6021         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
6022             disable fast_clz
6023         ;;
6024     esac
6025
6026 fi
6027
6028 check_cc intrinsics_neon arm_neon.h "int16x8_t test = vdupq_n_s16(0)"
6029
6030 check_ldflags -Wl,--as-needed
6031 check_ldflags -Wl,-z,noexecstack
6032
6033 if ! disabled network; then
6034     check_func getaddrinfo $network_extralibs
6035     check_func inet_aton $network_extralibs
6036
6037     check_type netdb.h "struct addrinfo"
6038     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
6039     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
6040     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
6041     check_type poll.h "struct pollfd"
6042     check_type netinet/sctp.h "struct sctp_event_subscribe"
6043     check_struct "sys/socket.h" "struct msghdr" msg_flags
6044     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
6045     check_type netinet/in.h "struct sockaddr_in6"
6046     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
6047     check_type "sys/types.h sys/socket.h" socklen_t
6048
6049     # Prefer arpa/inet.h over winsock2
6050     if check_headers arpa/inet.h ; then
6051         check_func closesocket
6052     elif check_headers winsock2.h ; then
6053         check_func_headers winsock2.h closesocket -lws2 &&
6054             network_extralibs="-lws2" ||
6055         { check_func_headers winsock2.h closesocket -lws2_32 &&
6056             network_extralibs="-lws2_32"; } || disable winsock2_h network
6057         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
6058
6059         check_type ws2tcpip.h socklen_t
6060         check_type ws2tcpip.h "struct addrinfo"
6061         check_type ws2tcpip.h "struct group_source_req"
6062         check_type ws2tcpip.h "struct ip_mreq_source"
6063         check_type ws2tcpip.h "struct ipv6_mreq"
6064         check_type winsock2.h "struct pollfd"
6065         check_struct winsock2.h "struct sockaddr" sa_len
6066         check_type ws2tcpip.h "struct sockaddr_in6"
6067         check_type ws2tcpip.h "struct sockaddr_storage"
6068     else
6069         disable network
6070     fi
6071 fi
6072
6073 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
6074 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
6075 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
6076 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
6077 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
6078 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
6079 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
6080
6081 case "$custom_allocator" in
6082     jemalloc)
6083         # jemalloc by default does not use a prefix
6084         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
6085     ;;
6086     tcmalloc)
6087         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
6088         malloc_prefix=tc_
6089     ;;
6090 esac
6091
6092 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
6093 check_func  ${malloc_prefix}memalign            && enable memalign
6094 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
6095
6096 check_func  access
6097 check_func_headers stdlib.h arc4random
6098 check_lib   clock_gettime time.h clock_gettime || check_lib clock_gettime time.h clock_gettime -lrt
6099 check_func  fcntl
6100 check_func  fork
6101 check_func  gethrtime
6102 check_func  getopt
6103 check_func  getrusage
6104 check_func  gettimeofday
6105 check_func  isatty
6106 check_func  mkstemp
6107 check_func  mmap
6108 check_func  mprotect
6109 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
6110 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
6111 check_func  sched_getaffinity
6112 check_func  setrlimit
6113 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
6114 check_func  strerror_r
6115 check_func  sysconf
6116 check_func  sysctl
6117 check_func  usleep
6118
6119 check_func_headers conio.h kbhit
6120 check_func_headers io.h setmode
6121 check_func_headers lzo/lzo1x.h lzo1x_999_compress
6122 check_func_headers mach/mach_time.h mach_absolute_time
6123 check_func_headers stdlib.h getenv
6124 check_func_headers sys/stat.h lstat
6125
6126 check_func_headers windows.h GetModuleHandle
6127 check_func_headers windows.h GetProcessAffinityMask
6128 check_func_headers windows.h GetProcessTimes
6129 check_func_headers windows.h GetStdHandle
6130 check_func_headers windows.h GetSystemTimeAsFileTime
6131 check_func_headers windows.h LoadLibrary
6132 check_func_headers windows.h MapViewOfFile
6133 check_func_headers windows.h PeekNamedPipe
6134 check_func_headers windows.h SetConsoleTextAttribute
6135 check_func_headers windows.h SetConsoleCtrlHandler
6136 check_func_headers windows.h SetDllDirectory
6137 check_func_headers windows.h Sleep
6138 check_func_headers windows.h VirtualAlloc
6139 check_func_headers glob.h glob
6140 enabled xlib &&
6141     check_lib xlib "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
6142
6143 check_headers direct.h
6144 check_headers dirent.h
6145 check_headers dxgidebug.h
6146 check_headers dxva.h
6147 check_headers dxva2api.h -D_WIN32_WINNT=0x0600
6148 check_headers io.h
6149 check_headers linux/perf_event.h
6150 check_headers libcrystalhd/libcrystalhd_if.h
6151 check_headers malloc.h
6152 check_headers mftransform.h
6153 check_headers net/udplite.h
6154 check_headers poll.h
6155 check_headers sys/param.h
6156 check_headers sys/resource.h
6157 check_headers sys/select.h
6158 check_headers sys/time.h
6159 check_headers sys/un.h
6160 check_headers termios.h
6161 check_headers unistd.h
6162 check_headers valgrind/valgrind.h
6163 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
6164 check_headers windows.h
6165 check_headers X11/extensions/XvMClib.h
6166 check_headers asm/types.h
6167
6168 # it seems there are versions of clang in some distros that try to use the
6169 # gcc headers, which explodes for stdatomic
6170 # so we also check that atomics actually work here
6171 check_builtin stdatomic stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0); foo += bar"
6172
6173 check_lib advapi32 "windows.h"            RegCloseKey          -ladvapi32
6174 check_lib bcrypt   "windows.h bcrypt.h"   BCryptGenRandom      -lbcrypt &&
6175     check_cpp_condition bcrypt bcrypt.h "defined BCRYPT_RNG_ALGORITHM"
6176 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
6177 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
6178 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
6179
6180 check_lib android android/native_window.h ANativeWindow_acquire -landroid
6181 check_lib mediandk "stdint.h media/NdkImage.h" AImage_delete -lmediandk
6182 check_lib camera2ndk "stdbool.h stdint.h camera/NdkCameraManager.h" ACameraManager_create -lcamera2ndk
6183
6184 enabled appkit       && check_apple_framework AppKit
6185 enabled audiotoolbox && check_apple_framework AudioToolbox
6186 enabled avfoundation && check_apple_framework AVFoundation
6187 enabled coreimage    && check_apple_framework CoreImage
6188 enabled videotoolbox && check_apple_framework VideoToolbox
6189
6190 check_apple_framework CoreFoundation
6191 check_apple_framework CoreMedia
6192 check_apple_framework CoreVideo
6193 check_apple_framework CoreAudio
6194
6195 enabled avfoundation && {
6196     disable coregraphics applicationservices
6197     check_lib coregraphics        CoreGraphics/CoreGraphics.h               CGGetActiveDisplayList "-framework CoreGraphics" ||
6198     check_lib applicationservices ApplicationServices/ApplicationServices.h CGGetActiveDisplayList "-framework ApplicationServices"; }
6199
6200 enabled videotoolbox && {
6201     check_lib coreservices CoreServices/CoreServices.h UTGetOSTypeFromString "-framework CoreServices"
6202     check_func_headers CoreMedia/CMFormatDescription.h kCMVideoCodecType_HEVC "-framework CoreMedia"
6203     check_func_headers CoreVideo/CVPixelBuffer.h kCVPixelFormatType_420YpCbCr10BiPlanarVideoRange "-framework CoreVideo"
6204     check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferTransferFunction_SMPTE_ST_2084_PQ "-framework CoreVideo"
6205     check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferTransferFunction_ITU_R_2100_HLG "-framework CoreVideo"
6206     check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferTransferFunction_Linear "-framework CoreVideo"
6207 }
6208
6209 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
6210
6211 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
6212 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
6213 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
6214 check_type "windows.h d3d11.h" "ID3D11VideoContext"
6215 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
6216 check_func_headers mfapi.h MFCreateAlignedMemoryBuffer -lmfplat
6217
6218 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
6219 check_type "vdpau/vdpau.h" "VdpPictureInfoVP9"
6220
6221 if [ -z "$nvccflags" ]; then
6222     nvccflags=$nvccflags_default
6223 fi
6224
6225 if enabled x86_64 || enabled ppc64 || enabled aarch64; then
6226     nvccflags="$nvccflags -m64"
6227 else
6228     nvccflags="$nvccflags -m32"
6229 fi
6230
6231 if enabled cuda_nvcc; then
6232     nvccflags="$nvccflags -ptx"
6233 else
6234     nvccflags="$nvccflags -S -nocudalib -nocudainc --cuda-device-only -include ${source_link}/compat/cuda/cuda_runtime.h"
6235     check_nvcc cuda_llvm
6236 fi
6237
6238 if ! disabled ffnvcodec; then
6239     ffnv_hdr_list="ffnvcodec/nvEncodeAPI.h ffnvcodec/dynlink_cuda.h ffnvcodec/dynlink_cuviddec.h ffnvcodec/dynlink_nvcuvid.h"
6240     check_pkg_config ffnvcodec "ffnvcodec >= 9.1.23.1" "$ffnv_hdr_list" "" || \
6241       check_pkg_config ffnvcodec "ffnvcodec >= 9.0.18.3 ffnvcodec < 9.1" "$ffnv_hdr_list" "" || \
6242       check_pkg_config ffnvcodec "ffnvcodec >= 8.2.15.10 ffnvcodec < 8.3" "$ffnv_hdr_list" "" || \
6243       check_pkg_config ffnvcodec "ffnvcodec >= 8.1.24.11 ffnvcodec < 8.2" "$ffnv_hdr_list" ""
6244 fi
6245
6246 check_cpp_condition winrt windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)"
6247
6248 if ! disabled w32threads && ! enabled pthreads; then
6249     check_func_headers "windows.h process.h" _beginthreadex &&
6250         check_type "windows.h" CONDITION_VARIABLE &&
6251         check_type "windows.h" INIT_ONCE &&
6252         enable w32threads || disable w32threads
6253     if ! enabled w32threads && enabled winrt; then
6254         check_func_headers "windows.h" CreateThread &&
6255             enable w32threads || disable w32threads
6256     fi
6257 fi
6258
6259 # check for some common methods of building with pthread support
6260 # do this before the optional library checks as some of them require pthreads
6261 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
6262     if check_lib pthreads pthread.h pthread_join   -pthread &&
6263        check_lib pthreads pthread.h pthread_create -pthread; then
6264         add_cflags -pthread
6265     elif check_lib pthreads pthread.h pthread_join   -pthreads &&
6266          check_lib pthreads pthread.h pthread_create -pthreads; then
6267         add_cflags -pthreads
6268     elif check_lib pthreads pthread.h pthread_join   -ldl -pthread &&
6269          check_lib pthreads pthread.h pthread_create -ldl -pthread; then
6270         add_cflags -ldl -pthread
6271     elif check_lib pthreads pthread.h pthread_join   -lpthreadGC2 &&
6272          check_lib pthreads pthread.h pthread_create -lpthreadGC2; then
6273         :
6274     elif check_lib pthreads pthread.h pthread_join   -lpthread &&
6275          check_lib pthreads pthread.h pthread_create -lpthread; then
6276         :
6277     elif check_func pthread_join && check_func pthread_create; then
6278         enable pthreads
6279     fi
6280     check_cc pthreads "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER"
6281
6282     if enabled pthreads; then
6283         check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
6284         check_func pthread_cancel $pthreads_extralibs
6285     fi
6286 fi
6287
6288 enabled  zlib && { check_pkg_config zlib zlib "zlib.h" zlibVersion ||
6289                    check_lib zlib   zlib.h      zlibVersion    -lz; }
6290 enabled bzlib && check_lib bzlib bzlib.h BZ2_bzlibVersion    -lbz2
6291 enabled  lzma && check_lib lzma   lzma.h lzma_version_number -llzma
6292
6293 # On some systems dynamic loading requires no extra linker flags
6294 check_lib libdl dlfcn.h "dlopen dlsym" || check_lib libdl dlfcn.h "dlopen dlsym" -ldl
6295
6296 check_lib libm math.h sin -lm
6297
6298 atan2f_args=2
6299 copysign_args=2
6300 hypot_args=2
6301 ldexpf_args=2
6302 powf_args=2
6303
6304 for func in $MATH_FUNCS; do
6305     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
6306 done
6307
6308 for func in $COMPLEX_FUNCS; do
6309     eval check_complexfunc $func \${${func}_args:-1}
6310 done
6311
6312 # these are off by default, so fail if requested and not available
6313 enabled avisynth          && require_headers "avisynth/avisynth_c.h"
6314 enabled cuda_nvcc         && { check_nvcc cuda_nvcc || die "ERROR: failed checking for nvcc."; }
6315 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
6316 enabled decklink          && { require_headers DeckLinkAPI.h &&
6317                                { test_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a0a0000" || die "ERROR: Decklink API version must be >= 10.10"; } }
6318 enabled frei0r            && require_headers "frei0r.h dlfcn.h"
6319 enabled gmp               && require gmp gmp.h mpz_export -lgmp
6320 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init
6321 enabled jni               && { [ $target_os = "android" ] && check_headers jni.h && enabled pthreads || die "ERROR: jni not found"; }
6322 enabled ladspa            && require_headers "ladspa.h dlfcn.h"
6323 enabled libaom            && require_pkg_config libaom "aom >= 1.0.0" aom/aom_codec.h aom_codec_version
6324 enabled libaribb24        && { check_pkg_config libaribb24 "aribb24 > 1.0.3" "aribb24/aribb24.h" arib_instance_new ||
6325                                { enabled gpl && require_pkg_config libaribb24 aribb24 "aribb24/aribb24.h" arib_instance_new; } ||
6326                                die "ERROR: libaribb24 requires version higher than 1.0.3 or --enable-gpl."; }
6327 enabled lv2               && require_pkg_config lv2 lilv-0 "lilv/lilv.h" lilv_world_new
6328 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
6329 enabled libass            && require_pkg_config libass libass ass/ass.h ass_library_init
6330 enabled libbluray         && require_pkg_config libbluray libbluray libbluray/bluray.h bd_open
6331 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
6332 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
6333                              { check_lib libcelt celt/celt.h celt_decoder_create_custom -lcelt0 ||
6334                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
6335 enabled libcaca           && require_pkg_config libcaca caca caca.h caca_create_canvas
6336 enabled libcodec2         && require libcodec2 codec2/codec2.h codec2_create -lcodec2
6337 enabled libdav1d          && require_pkg_config libdav1d "dav1d >= 0.5.0" "dav1d/dav1d.h" dav1d_version
6338 enabled libdavs2          && require_pkg_config libdavs2 "davs2 >= 1.6.0" davs2.h davs2_decoder_open
6339 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
6340 enabled libdrm            && require_pkg_config libdrm libdrm xf86drm.h drmGetVersion
6341 enabled libfdk_aac        && { check_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
6342                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
6343                                  warn "using libfdk without pkg-config"; } }
6344 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"
6345 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_extralibs
6346 enabled fontconfig        && enable libfontconfig
6347 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
6348 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
6349 enabled libfribidi        && require_pkg_config libfribidi fribidi fribidi.h fribidi_version_info
6350 enabled libglslang        && require_cpp libglslang glslang/SPIRV/GlslangToSpv.h "glslang::TIntermediate*" -lglslang -lMachineIndependent -lOSDependent -lHLSL -lOGLCompiler -lGenericCodeGen -lSPVRemapper -lSPIRV -lSPIRV-Tools-opt -lSPIRV-Tools -lpthread -lstdc++
6351 enabled libgme            && { check_pkg_config libgme libgme gme/gme.h gme_new_emu ||
6352                                require libgme gme/gme.h gme_new_emu -lgme -lstdc++; }
6353 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
6354                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
6355                                done || die "ERROR: libgsm not found"; }
6356 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc $pthreads_extralibs
6357 enabled libklvanc         && require libklvanc libklvanc/vanc.h klvanc_context_create -lklvanc
6358 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
6359 enabled liblensfun        && require_pkg_config liblensfun lensfun lensfun.h lf_db_new
6360 # While it may appear that require is being used as a pkg-config
6361 # fallback for libmfx, it is actually being used to detect a different
6362 # installation route altogether.  If libmfx is installed via the Intel
6363 # Media SDK or Intel Media Server Studio, these don't come with
6364 # pkg-config support.  Instead, users should make sure that the build
6365 # can find the libraries and headers through other means.
6366 enabled libmfx            && { check_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit ||
6367                                { require libmfx "mfx/mfxvideo.h" MFXInit "-llibmfx $advapi32_extralibs" && warn "using libmfx without pkg-config"; } }
6368 if enabled libmfx; then
6369    check_cc MFX_CODEC_VP9 "mfx/mfxvp9.h mfx/mfxstructures.h" "MFX_CODEC_VP9"
6370 fi
6371
6372 enabled libmodplug        && require_pkg_config libmodplug libmodplug libmodplug/modplug.h ModPlug_Load
6373 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame $libm_extralibs
6374 enabled libmysofa         && { check_pkg_config libmysofa libmysofa mysofa.h mysofa_neighborhood_init_withstepdefine ||
6375                                require libmysofa mysofa.h mysofa_neighborhood_init_withstepdefine -lmysofa $zlib_extralibs; }
6376 enabled libnpp            && { check_lib libnpp npp.h nppGetLibVersion -lnppig -lnppicc -lnppc -lnppidei ||
6377                                check_lib libnpp npp.h nppGetLibVersion -lnppi -lnppc -lnppidei ||
6378                                die "ERROR: libnpp not found"; }
6379 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
6380 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
6381 enabled libopencv         && { check_headers opencv2/core/core_c.h &&
6382                                { check_pkg_config libopencv opencv opencv2/core/core_c.h cvCreateImageHeader ||
6383                                  require libopencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
6384                                require_pkg_config libopencv opencv opencv/cxcore.h cvCreateImageHeader; }
6385 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
6386 enabled libopenjpeg       && { check_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version ||
6387                                { require_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } }
6388 enabled libopenmpt        && require_pkg_config libopenmpt "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create -lstdc++ && append libopenmpt_extralibs "-lstdc++"
6389 enabled libopenvino       && require libopenvino c_api/ie_c_api.h ie_c_api_version -linference_engine_c_api
6390 enabled libopus           && {
6391     enabled libopus_decoder && {
6392         require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
6393     }
6394     enabled libopus_encoder && {
6395         require_pkg_config libopus opus opus_multistream.h opus_multistream_surround_encoder_create
6396     }
6397 }
6398 enabled libpulse          && require_pkg_config libpulse libpulse pulse/pulseaudio.h pa_context_new
6399 enabled librabbitmq       && require_pkg_config librabbitmq "librabbitmq >= 0.7.1" amqp.h amqp_new_connection
6400 enabled librav1e          && require_pkg_config librav1e "rav1e >= 0.1.0" rav1e.h rav1e_context_new
6401 enabled librsvg           && require_pkg_config librsvg librsvg-2.0 librsvg-2.0/librsvg/rsvg.h rsvg_handle_render_cairo
6402 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
6403 enabled librubberband     && require_pkg_config librubberband "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new -lstdc++ && append librubberband_extralibs "-lstdc++"
6404 enabled libshine          && require_pkg_config libshine shine shine/layer3.h shine_encode_buffer
6405 enabled libsmbclient      && { check_pkg_config libsmbclient smbclient libsmbclient.h smbc_init ||
6406                                require libsmbclient libsmbclient.h smbc_init -lsmbclient; }
6407 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy -lstdc++
6408 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
6409 enabled libssh            && require_pkg_config libssh libssh libssh/sftp.h sftp_init
6410 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init
6411 enabled libsrt            && require_pkg_config libsrt "srt >= 1.3.0" srt/srt.h srt_socket
6412 enabled libsvtav1         && require_pkg_config libsvtav1 "SvtAv1Enc >= 0.8.4" EbSvtAv1Enc.h svt_av1_enc_init_handle
6413 enabled libtensorflow     && require libtensorflow tensorflow/c/c_api.h TF_Version -ltensorflow
6414 enabled libtesseract      && require_pkg_config libtesseract tesseract tesseract/capi.h TessBaseAPICreate
6415 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
6416 enabled libtls            && require_pkg_config libtls libtls tls.h tls_configure
6417 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
6418                              { check_lib libtwolame twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
6419                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
6420 enabled libv4l2           && require_pkg_config libv4l2 libv4l2 libv4l2.h v4l2_ioctl
6421 enabled libvidstab        && require_pkg_config libvidstab "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
6422 enabled libvmaf           && require_pkg_config libvmaf "libvmaf >= 1.5.2" libvmaf.h compute_vmaf
6423 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
6424 enabled libvorbis         && require_pkg_config libvorbis vorbis vorbis/codec.h vorbis_info_init &&
6425                              require_pkg_config libvorbisenc vorbisenc vorbis/vorbisenc.h vorbis_encode_init
6426
6427 enabled libvpx            && {
6428     enabled libvpx_vp8_decoder && {
6429         check_pkg_config libvpx_vp8_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
6430             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"
6431     }
6432     enabled libvpx_vp8_encoder && {
6433         check_pkg_config libvpx_vp8_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
6434             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"
6435     }
6436     enabled libvpx_vp9_decoder && {
6437         check_pkg_config libvpx_vp9_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
6438             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"
6439     }
6440     enabled libvpx_vp9_encoder && {
6441         check_pkg_config libvpx_vp9_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
6442             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"
6443     }
6444     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
6445         die "libvpx enabled but no supported decoders found"
6446     fi
6447 }
6448
6449 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
6450 enabled libwebp           && {
6451     enabled libwebp_encoder      && require_pkg_config libwebp "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
6452     enabled libwebp_anim_encoder && check_pkg_config libwebp_anim_encoder "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit; }
6453 enabled libx264           && { check_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode ||
6454                                { require libx264 "stdint.h x264.h" x264_encoder_encode "-lx264 $pthreads_extralibs $libm_extralibs" &&
6455                                  warn "using libx264 without pkg-config"; } } &&
6456                              require_cpp_condition libx264 x264.h "X264_BUILD >= 118" &&
6457                              check_cpp_condition libx262 x264.h "X264_MPEG2"
6458 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
6459                              require_cpp_condition libx265 x265.h "X265_BUILD >= 70"
6460 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode "-lxavs $pthreads_extralibs $libm_extralibs"
6461 enabled libxavs2          && require_pkg_config libxavs2 "xavs2 >= 1.3.0" "stdint.h xavs2.h" xavs2_api_get
6462 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
6463 enabled libzimg           && require_pkg_config libzimg "zimg >= 2.7.0" zimg.h zimg_get_api_version
6464 enabled libzmq            && require_pkg_config libzmq "libzmq >= 4.2.1" zmq.h zmq_ctx_new
6465 enabled libzvbi           && require_pkg_config libzvbi zvbi-0.2 libzvbi.h vbi_decoder_new &&
6466                              { test_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
6467                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
6468 enabled libxml2           && require_pkg_config libxml2 libxml-2.0 libxml2/libxml/xmlversion.h xmlCheckVersion
6469 enabled mbedtls           && { check_pkg_config mbedtls mbedtls mbedtls/x509_crt.h mbedtls_x509_crt_init ||
6470                                check_pkg_config mbedtls mbedtls mbedtls/ssl.h mbedtls_ssl_init ||
6471                                check_lib mbedtls mbedtls/ssl.h mbedtls_ssl_init -lmbedtls -lmbedx509 -lmbedcrypto ||
6472                                die "ERROR: mbedTLS not found"; }
6473 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
6474 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
6475                                { ! enabled cross_compile &&
6476                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
6477                                  add_ldflags -L/opt/vc/lib/ &&
6478                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
6479                                die "ERROR: mmal not found" &&
6480                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
6481 enabled openal            && { { for al_extralibs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
6482                                check_lib openal 'AL/al.h' alGetError "${al_extralibs}" && break; done } ||
6483                                die "ERROR: openal not found"; } &&
6484                              { test_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
6485                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
6486 enabled opencl            && { check_pkg_config opencl OpenCL CL/cl.h clEnqueueNDRangeKernel ||
6487                                check_lib opencl OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
6488                                check_lib opencl CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
6489                                die "ERROR: opencl not found"; } &&
6490                              { test_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
6491                                test_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
6492                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
6493 enabled opengl            && { check_lib opengl GL/glx.h glXGetProcAddress "-lGL" ||
6494                                check_lib opengl windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
6495                                check_lib opengl OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
6496                                check_lib opengl ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
6497                                die "ERROR: opengl not found."
6498                              }
6499 enabled omx_rpi           && { test_code cc OMX_Core.h OMX_IndexConfigBrcmVideoRequestIFrame ||
6500                                { ! enabled cross_compile &&
6501                                  add_cflags -isystem/opt/vc/include/IL &&
6502                                  test_code cc OMX_Core.h OMX_IndexConfigBrcmVideoRequestIFrame; } ||
6503                                die "ERROR: OpenMAX IL headers from raspberrypi/firmware not found"; } &&
6504                              enable omx
6505 enabled omx               && require_headers OMX_Core.h
6506 enabled openssl           && { check_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
6507                                check_pkg_config openssl openssl openssl/ssl.h SSL_library_init ||
6508                                check_lib openssl openssl/ssl.h OPENSSL_init_ssl -lssl -lcrypto ||
6509                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
6510                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
6511                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
6512                                die "ERROR: openssl not found"; }
6513 enabled pocketsphinx      && require_pkg_config pocketsphinx pocketsphinx pocketsphinx/pocketsphinx.h ps_init
6514 enabled rkmpp             && { require_pkg_config rkmpp rockchip_mpp  rockchip/rk_mpi.h mpp_create &&
6515                                require_pkg_config rockchip_mpp "rockchip_mpp >= 1.3.7" rockchip/rk_mpi.h mpp_create &&
6516                                { enabled libdrm ||
6517                                  die "ERROR: rkmpp requires --enable-libdrm"; }
6518                              }
6519 enabled vapoursynth       && require_pkg_config vapoursynth "vapoursynth-script >= 42" VSScript.h vsscript_init
6520
6521
6522 if enabled gcrypt; then
6523     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
6524     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
6525         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
6526         gcrypt_extralibs=$("${GCRYPT_CONFIG}" --libs)
6527         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_extralibs ||
6528             die "ERROR: gcrypt not found"
6529         add_cflags $gcrypt_cflags
6530     else
6531         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
6532     fi
6533 fi
6534
6535 if enabled sdl2; then
6536     SDL2_CONFIG="${cross_prefix}sdl2-config"
6537     test_pkg_config sdl2 "sdl2 >= 2.0.1 sdl2 < 2.1.0" SDL_events.h SDL_PollEvent
6538     if disabled sdl2 && "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
6539         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
6540         sdl2_extralibs=$("${SDL2_CONFIG}" --libs)
6541         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
6542         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
6543         check_func_headers SDL_events.h SDL_PollEvent $sdl2_extralibs $sdl2_cflags &&
6544             enable sdl2
6545     fi
6546     if test $target_os = "mingw32"; then
6547         sdl2_extralibs=$(filter_out '-mwindows' $sdl2_extralibs)
6548     fi
6549 fi
6550
6551 if enabled decklink; then
6552     case $target_os in
6553         mingw32*|mingw64*|win32|win64)
6554             decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
6555             decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
6556             ;;
6557     esac
6558 fi
6559
6560 enabled securetransport &&
6561     check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
6562     check_lib securetransport "Security/SecureTransport.h Security/Security.h" "SSLCreateContext" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" ||
6563         disable securetransport
6564
6565 enabled securetransport &&
6566     check_func SecItemImport "-Wl,-framework,CoreFoundation -Wl,-framework,Security"
6567
6568 enabled schannel &&
6569     check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
6570     test_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" &&
6571     schannel_extralibs="-lsecur32" ||
6572         disable schannel
6573
6574 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
6575 enabled makeinfo \
6576     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
6577     && enable makeinfo_html || disable makeinfo_html
6578 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
6579 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
6580 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
6581 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
6582
6583 # check V4L2 codecs available in the API
6584 if enabled v4l2_m2m; then
6585     check_headers linux/fb.h
6586     check_headers linux/videodev2.h
6587     test_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6588     check_cc v4l2_m2m linux/videodev2.h "int i = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_VIDEO_M2M | V4L2_BUF_FLAG_LAST;"
6589     check_cc vc1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VC1_ANNEX_G;"
6590     check_cc mpeg1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG1;"
6591     check_cc mpeg2_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG2;"
6592     check_cc mpeg4_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG4;"
6593     check_cc hevc_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_HEVC;"
6594     check_cc h263_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H263;"
6595     check_cc h264_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H264;"
6596     check_cc vp8_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP8;"
6597     check_cc vp9_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP9;"
6598 fi
6599
6600 check_headers sys/videoio.h
6601 test_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6602
6603 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
6604 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
6605 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
6606 # w32api 3.12 had it defined wrong
6607 check_cpp_condition vfwcap_defines vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER"
6608
6609 check_type "dshow.h" IBaseFilter
6610
6611 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
6612 check_headers "dev/bktr/ioctl_meteor.h dev/bktr/ioctl_bt848.h"                   ||
6613     check_headers "machine/ioctl_meteor.h machine/ioctl_bt848.h"                 ||
6614     check_headers "dev/video/meteor/ioctl_meteor.h dev/video/bktr/ioctl_bt848.h" ||
6615     check_headers "dev/ic/bt8xx.h"
6616
6617 if check_struct sys/soundcard.h audio_buf_info bytes; then
6618     enable_sanitized sys/soundcard.h
6619 else
6620     test_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_sanitized sys/soundcard.h
6621     #include <sys/soundcard.h>
6622     audio_buf_info abc;
6623 EOF
6624 fi
6625
6626 enabled alsa && { check_pkg_config alsa alsa "alsa/asoundlib.h" snd_pcm_htimestamp ||
6627                   check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound; }
6628
6629 enabled libjack &&
6630     require_pkg_config libjack jack jack/jack.h jack_port_get_latency_range
6631
6632 enabled sndio && check_lib sndio sndio.h sio_open -lsndio
6633
6634 if enabled libcdio; then
6635     check_pkg_config libcdio libcdio_paranoia "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open ||
6636     check_pkg_config libcdio libcdio_paranoia "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open ||
6637     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6638     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6639     die "ERROR: No usable libcdio/cdparanoia found"
6640 fi
6641
6642 enabled libxcb && check_pkg_config libxcb "xcb >= 1.4" xcb/xcb.h xcb_connect ||
6643     disable libxcb_shm libxcb_shape libxcb_xfixes
6644
6645 if enabled libxcb; then
6646     enabled libxcb_shm    && check_pkg_config libxcb_shm    xcb-shm    xcb/shm.h    xcb_shm_attach
6647     enabled libxcb_shape  && check_pkg_config libxcb_shape  xcb-shape  xcb/shape.h  xcb_shape_get_rectangles
6648     enabled libxcb_xfixes && check_pkg_config libxcb_xfixes xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image
6649 fi
6650
6651 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6652
6653 # d3d11va requires linking directly to dxgi and d3d11 if not building for
6654 # the desktop api partition
6655 test_cpp <<EOF && enable uwp && d3d11va_extralibs="-ldxgi -ld3d11"
6656 #ifdef WINAPI_FAMILY
6657 #include <winapifamily.h>
6658 #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
6659 #error desktop, not uwp
6660 #else
6661 // WINAPI_FAMILY_APP, WINAPI_FAMILY_PHONE_APP => UWP
6662 #endif
6663 #else
6664 #error no family set
6665 #endif
6666 EOF
6667
6668 enabled libdrm &&
6669     check_pkg_config libdrm_getfb2 libdrm "xf86drmMode.h" drmModeGetFB2
6670
6671 enabled vaapi &&
6672     check_pkg_config vaapi "libva >= 0.35.0" "va/va.h" vaInitialize
6673
6674 if enabled vaapi; then
6675     check_pkg_config vaapi_drm "libva-drm" "va/va_drm.h" vaGetDisplayDRM
6676
6677     if enabled xlib; then
6678         check_pkg_config vaapi_x11 "libva-x11" "va/va_x11.h" vaGetDisplay
6679     fi
6680
6681     check_cpp_condition vaapi_1 "va/va.h" "VA_CHECK_VERSION(1, 0, 0)"
6682
6683     check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
6684     check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
6685     check_type   "va/va.h va/va_vpp.h" "VAProcFilterParameterBufferHDRToneMapping"
6686     check_struct "va/va.h va/va_vpp.h" "VAProcPipelineCaps" rotation_flags
6687     check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
6688     check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
6689     check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
6690     check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
6691 fi
6692
6693 if enabled_all opencl libdrm ; then
6694     check_type "CL/cl_intel.h" "clCreateImageFromFdINTEL_fn" &&
6695         enable opencl_drm_beignet
6696     check_func_headers "CL/cl_ext.h" clImportMemoryARM &&
6697         enable opencl_drm_arm
6698 fi
6699
6700 if enabled_all opencl vaapi ; then
6701     if enabled opencl_drm_beignet ; then
6702         enable opencl_vaapi_beignet
6703     else
6704         check_type "CL/cl.h CL/cl_va_api_media_sharing_intel.h" "clCreateFromVA_APIMediaSurfaceINTEL_fn" &&
6705             enable opencl_vaapi_intel_media
6706     fi
6707 fi
6708
6709 if enabled_all opencl dxva2 ; then
6710     check_type "CL/cl_dx9_media_sharing.h" cl_dx9_surface_info_khr &&
6711         enable opencl_dxva2
6712 fi
6713
6714 if enabled_all opencl d3d11va ; then
6715     check_type "CL/cl_d3d11.h" clGetDeviceIDsFromD3D11KHR_fn &&
6716         enable opencl_d3d11
6717 fi
6718
6719 enabled vdpau &&
6720     check_cpp_condition vdpau vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP"
6721
6722 enabled vdpau &&
6723     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
6724
6725 enabled crystalhd && check_lib crystalhd "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd
6726
6727 enabled vulkan &&
6728     require_pkg_config vulkan "vulkan >= 1.1.97" "vulkan/vulkan.h" vkCreateInstance
6729
6730 if enabled x86; then
6731     case $target_os in
6732         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6733             ;;
6734         *)
6735             disable ffnvcodec cuvid nvdec nvenc
6736             ;;
6737     esac
6738 elif enabled_any aarch64 ppc64 && ! enabled bigendian; then
6739     case $target_os in
6740         linux)
6741             ;;
6742         *)
6743             disable ffnvcodec cuvid nvdec nvenc
6744             ;;
6745     esac
6746 else
6747     disable ffnvcodec cuvid nvdec nvenc
6748 fi
6749
6750 enabled ffnvcodec && enable cuda
6751
6752 enabled nvenc &&
6753     test_cc -I$source_path <<EOF || disable nvenc
6754 #include <ffnvcodec/nvEncodeAPI.h>
6755 NV_ENCODE_API_FUNCTION_LIST flist;
6756 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6757 int main(void) { return 0; }
6758 EOF
6759
6760 enabled amf &&
6761     check_cpp_condition amf "AMF/core/Version.h" \
6762         "(AMF_VERSION_MAJOR << 48 | AMF_VERSION_MINOR << 32 | AMF_VERSION_RELEASE << 16 | AMF_VERSION_BUILD_NUM) >= 0x0001000400090000"
6763
6764 # Funny iconv installations are not unusual, so check it after all flags have been set
6765 if enabled libc_iconv; then
6766     check_func_headers iconv.h iconv
6767 elif enabled iconv; then
6768     check_func_headers iconv.h iconv || check_lib iconv iconv.h iconv -liconv
6769 fi
6770
6771 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6772
6773 # add some useful compiler flags if supported
6774 check_cflags -Wdeclaration-after-statement
6775 check_cflags -Wall
6776 check_cflags -Wdisabled-optimization
6777 check_cflags -Wpointer-arith
6778 check_cflags -Wredundant-decls
6779 check_cflags -Wwrite-strings
6780 check_cflags -Wtype-limits
6781 check_cflags -Wundef
6782 check_cflags -Wmissing-prototypes
6783 check_cflags -Wno-pointer-to-int-cast
6784 check_cflags -Wstrict-prototypes
6785 check_cflags -Wempty-body
6786
6787 if enabled extra_warnings; then
6788     check_cflags -Wcast-qual
6789     check_cflags -Wextra
6790     check_cflags -Wpedantic
6791 fi
6792
6793 check_disable_warning(){
6794     warning_flag=-W${1#-Wno-}
6795     test_cflags $unknown_warning_flags $warning_flag && add_cflags $1
6796 }
6797
6798 test_cflags -Werror=unused-command-line-argument &&
6799     append unknown_warning_flags "-Werror=unused-command-line-argument"
6800 test_cflags -Werror=unknown-warning-option &&
6801     append unknown_warning_flags "-Werror=unknown-warning-option"
6802
6803 check_disable_warning -Wno-parentheses
6804 check_disable_warning -Wno-switch
6805 check_disable_warning -Wno-format-zero-length
6806 check_disable_warning -Wno-pointer-sign
6807 check_disable_warning -Wno-unused-const-variable
6808 check_disable_warning -Wno-bool-operation
6809 check_disable_warning -Wno-char-subscripts
6810
6811 check_disable_warning_headers(){
6812     warning_flag=-W${1#-Wno-}
6813     test_cflags $warning_flag && add_cflags_headers $1
6814 }
6815
6816 check_disable_warning_headers -Wno-deprecated-declarations
6817 check_disable_warning_headers -Wno-unused-variable
6818
6819 test_cc <<EOF && enable blocks_extension
6820 void (^block)(void);
6821 EOF
6822
6823 # add some linker flags
6824 check_ldflags -Wl,--warn-common
6825 check_ldflags -Wl,-rpath-link=:libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6826 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir && add_ldsoflags -Wl,-rpath,$libdir
6827 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6828
6829 # add some strip flags
6830 check_stripflags -x
6831
6832 enabled neon_clobber_test &&
6833     check_ldflags -Wl,--wrap,avcodec_open2              \
6834                   -Wl,--wrap,avcodec_decode_audio4      \
6835                   -Wl,--wrap,avcodec_decode_video2      \
6836                   -Wl,--wrap,avcodec_decode_subtitle2   \
6837                   -Wl,--wrap,avcodec_encode_audio2      \
6838                   -Wl,--wrap,avcodec_encode_video2      \
6839                   -Wl,--wrap,avcodec_encode_subtitle    \
6840                   -Wl,--wrap,avcodec_send_packet        \
6841                   -Wl,--wrap,avcodec_receive_packet     \
6842                   -Wl,--wrap,avcodec_send_frame         \
6843                   -Wl,--wrap,avcodec_receive_frame      \
6844                   -Wl,--wrap,swr_convert                \
6845                   -Wl,--wrap,avresample_convert ||
6846     disable neon_clobber_test
6847
6848 enabled xmm_clobber_test &&
6849     check_ldflags -Wl,--wrap,avcodec_open2              \
6850                   -Wl,--wrap,avcodec_decode_audio4      \
6851                   -Wl,--wrap,avcodec_decode_video2      \
6852                   -Wl,--wrap,avcodec_decode_subtitle2   \
6853                   -Wl,--wrap,avcodec_encode_audio2      \
6854                   -Wl,--wrap,avcodec_encode_video2      \
6855                   -Wl,--wrap,avcodec_encode_subtitle    \
6856                   -Wl,--wrap,avcodec_send_packet        \
6857                   -Wl,--wrap,avcodec_receive_packet     \
6858                   -Wl,--wrap,avcodec_send_frame         \
6859                   -Wl,--wrap,avcodec_receive_frame      \
6860                   -Wl,--wrap,swr_convert                \
6861                   -Wl,--wrap,avresample_convert         \
6862                   -Wl,--wrap,sws_scale ||
6863     disable xmm_clobber_test
6864
6865 check_ld "cc" proper_dce <<EOF
6866 extern const int array[512];
6867 static inline int func(void) { return array[0]; }
6868 int main(void) { return 0; }
6869 EOF
6870
6871 if enabled proper_dce; then
6872     echo "X { local: *; };" > $TMPV
6873     if test_ldflags -Wl,${version_script},$TMPV; then
6874         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6875         quotes='""'
6876         test_cc <<EOF && enable symver_asm_label
6877 void ff_foo(void) __asm__ ("av_foo@VERSION");
6878 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6879 EOF
6880         test_cc <<EOF && enable symver_gnu_asm
6881 __asm__(".symver ff_foo,av_foo@VERSION");
6882 void ff_foo(void) {}
6883 EOF
6884     fi
6885 fi
6886
6887 if [ -z "$optflags" ]; then
6888     if enabled small; then
6889         optflags=$cflags_size
6890     elif enabled optimizations; then
6891         optflags=$cflags_speed
6892     else
6893         optflags=$cflags_noopt
6894     fi
6895 fi
6896
6897 check_optflags(){
6898     check_cflags "$@"
6899     enabled lto && check_ldflags "$@"
6900 }
6901
6902 check_optflags $optflags
6903 check_optflags -fno-math-errno
6904 check_optflags -fno-signed-zeros
6905
6906 if enabled lto; then
6907     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6908     check_cflags  -flto
6909     check_ldflags -flto $cpuflags
6910     disable inline_asm_direct_symbol_refs
6911 fi
6912
6913 enabled ftrapv && check_cflags -ftrapv
6914
6915 test_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6916 int x;
6917 EOF
6918
6919
6920 if enabled icc; then
6921     # Just warnings, no remarks
6922     check_cflags -w1
6923     # -wd: Disable following warnings
6924     # 144, 167, 556: -Wno-pointer-sign
6925     # 188: enumerated type mixed with another type
6926     # 1292: attribute "foo" ignored
6927     # 1419: external declaration in primary source file
6928     # 10006: ignoring unknown option -fno-signed-zeros
6929     # 10148: ignoring unknown option -Wno-parentheses
6930     # 10156: ignoring option '-W'; no argument required
6931     # 13200: No EMMS instruction before call to function
6932     # 13203: No EMMS instruction before return from function
6933     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6934     # 11030: Warning unknown option --as-needed
6935     # 10156: ignoring option '-export'; no argument required
6936     check_ldflags -wd10156,11030
6937     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6938     enable ebp_available
6939     # The test above does not test linking
6940     enabled lto && disable symver_asm_label
6941     if enabled x86_32; then
6942         icc_version=$($cc -dumpversion)
6943         test ${icc_version%%.*} -ge 11 &&
6944             check_cflags -falign-stack=maintain-16-byte ||
6945             disable aligned_stack
6946     fi
6947 elif enabled gcc; then
6948     check_optflags -fno-tree-vectorize
6949     check_cflags -Werror=format-security
6950     check_cflags -Werror=implicit-function-declaration
6951     check_cflags -Werror=missing-prototypes
6952     check_cflags -Werror=return-type
6953     check_cflags -Werror=vla
6954     check_cflags -Wformat
6955     check_cflags -fdiagnostics-color=auto
6956     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6957     if enabled x86_32; then
6958         case $target_os in
6959         *bsd*)
6960             # BSDs don't guarantee a 16 byte aligned stack, but we can
6961             # request GCC to try to maintain 16 byte alignment throughout
6962             # function calls. Library entry points that might call assembly
6963             # functions align the stack. (The parameter means 2^4 bytes.)
6964             check_cflags -mpreferred-stack-boundary=4
6965             ;;
6966         esac
6967     fi
6968 elif enabled llvm_gcc; then
6969     check_cflags -mllvm -stack-alignment=16
6970 elif enabled clang; then
6971     if enabled x86_32; then
6972         # Clang doesn't support maintaining alignment without assuming the
6973         # same alignment in every function. If 16 byte alignment would be
6974         # enabled, one would also have to either add attribute_align_arg on
6975         # every single entry point into the libraries or enable -mstackrealign
6976         # (doing stack realignment in every single function).
6977         case $target_os in
6978         mingw32|win32|*bsd*)
6979             disable aligned_stack
6980             ;;
6981         *)
6982             check_cflags -mllvm -stack-alignment=16
6983             check_cflags -mstack-alignment=16
6984             ;;
6985         esac
6986     else
6987         check_cflags -mllvm -stack-alignment=16
6988         check_cflags -mstack-alignment=16
6989     fi
6990     check_cflags -Qunused-arguments
6991     check_cflags -Werror=implicit-function-declaration
6992     check_cflags -Werror=missing-prototypes
6993     check_cflags -Werror=return-type
6994 elif enabled cparser; then
6995     add_cflags -Wno-missing-variable-declarations
6996     add_cflags -Wno-empty-statement
6997 elif enabled armcc; then
6998     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6999     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
7000     # 2523: use of inline assembly is deprecated
7001     add_cflags -W${armcc_opt},--diag_suppress=2523
7002     add_cflags -W${armcc_opt},--diag_suppress=1207
7003     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
7004     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
7005     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
7006     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
7007 elif enabled pathscale; then
7008     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
7009     disable inline_asm
7010 elif enabled_any msvc icl; then
7011     enabled x86_32 && disable aligned_stack
7012     enabled_all x86_32 debug && add_cflags -Oy-
7013     enabled debug && add_ldflags -debug
7014     enable pragma_deprecated
7015     if enabled icl; then
7016         # -Qansi-alias is basically -fstrict-aliasing, but does not work
7017         # (correctly) on icl 13.x.
7018         test_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
7019             add_cflags -Qansi-alias
7020         # Some inline asm is not compilable in debug
7021         if enabled debug; then
7022             disable ebp_available
7023             disable ebx_available
7024         fi
7025     fi
7026     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
7027     check_cpp_condition log2 crtversion.h "_VC_CRT_MAJOR_VERSION >= 12"
7028     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
7029     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
7030     # (as it ends up if the restrict redefine is done before including stdlib.h), while
7031     # MSVC 2013 and newer can handle it fine.
7032     # If this declspec fails, force including stdlib.h before the restrict redefinition
7033     # happens in config.h.
7034     if [ $restrict_keyword != restrict ]; then
7035         test_cc <<EOF || add_cflags -FIstdlib.h
7036 __declspec($restrict_keyword) void *foo(int);
7037 EOF
7038     fi
7039     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
7040     # Issue has been fixed in MSVC v19.00.24218.
7041     test_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
7042         check_cflags -d2SSAOptimizer-
7043     # enable utf-8 source processing on VS2015 U2 and newer
7044     test_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
7045         add_cflags -utf-8
7046 fi
7047
7048 for pfx in "" host_; do
7049     varname=${pfx%_}cc_type
7050     eval "type=\$$varname"
7051     if [ "$type" = "msvc" ]; then
7052         test_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
7053 static inline int foo(int a) { return a; }
7054 EOF
7055     fi
7056 done
7057
7058 case $as_type in
7059     clang)
7060         add_asflags -Qunused-arguments
7061     ;;
7062 esac
7063
7064 case $ld_type in
7065     clang)
7066         check_ldflags -Qunused-arguments
7067     ;;
7068 esac
7069
7070 enable frame_thread_encoder
7071
7072 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
7073
7074 check_deps $CONFIG_LIST       \
7075            $CONFIG_EXTRA      \
7076            $HAVE_LIST         \
7077            $ALL_COMPONENTS    \
7078
7079 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"
7080 enabled avresample && warn "Building with deprecated library libavresample"
7081
7082 case $target_os in
7083 haiku)
7084     disable memalign
7085     disable posix_memalign
7086     ;;
7087 *-dos|freedos|opendos)
7088     if test_cpp_condition sys/version.h "defined(__DJGPP__) && __DJGPP__ == 2 && __DJGPP_MINOR__ == 5"; then
7089         disable memalign
7090     fi
7091     ;;
7092 esac
7093
7094 flatten_extralibs(){
7095     nested_entries=
7096     list_name=$1
7097     eval list=\$${1}
7098     for entry in $list; do
7099         entry_copy=$entry
7100         resolve entry_copy
7101         flat_entries=
7102         for e in $entry_copy; do
7103             case $e in
7104                 *_extralibs) nested_entries="$nested_entries$e ";;
7105                           *) flat_entries="$flat_entries$e ";;
7106             esac
7107         done
7108         eval $entry="\$flat_entries"
7109     done
7110     append $list_name "$nested_entries"
7111
7112     resolve nested_entries
7113     if test -n "$(filter '*_extralibs' $nested_entries)"; then
7114         flatten_extralibs $list_name
7115     fi
7116 }
7117
7118 flatten_extralibs_wrapper(){
7119     list_name=$1
7120     flatten_extralibs $list_name
7121     unique $list_name
7122     resolve $list_name
7123     eval $list_name=\$\(\$ldflags_filter \$$list_name\)
7124     eval printf \''%s'\' \""\$$list_name"\"
7125 }
7126
7127 for linkunit in $LIBRARY_LIST; do
7128     unset current_extralibs
7129     eval components=\$$(toupper ${linkunit})_COMPONENTS_LIST
7130     for comp in ${components}; do
7131         enabled $comp || continue
7132         comp_extralibs="${comp}_extralibs"
7133         append current_extralibs $comp_extralibs
7134     done
7135     eval prepend ${linkunit}_extralibs $current_extralibs
7136 done
7137
7138 for linkunit in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
7139     eval ${linkunit}_extralibs=\$\(flatten_extralibs_wrapper ${linkunit}_extralibs\)
7140 done
7141
7142 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
7143
7144 for thread in $THREADS_LIST; do
7145     if enabled $thread; then
7146         test -n "$thread_type" &&
7147             die "ERROR: Only one thread type must be selected." ||
7148             thread_type="$thread"
7149     fi
7150 done
7151
7152 if disabled stdatomic; then
7153     if enabled atomics_gcc; then
7154         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
7155     elif enabled atomics_win32; then
7156         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
7157     elif enabled atomics_suncc; then
7158         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
7159     elif enabled pthreads; then
7160         add_compat atomics/pthread/stdatomic.o
7161         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
7162     else
7163         enabled threads && die "Threading is enabled, but no atomics are available"
7164         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
7165     fi
7166 fi
7167
7168 # Check if requested libraries were found.
7169 for lib in $AUTODETECT_LIBS; do
7170     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
7171 done
7172
7173 enabled zlib && add_cppflags -DZLIB_CONST
7174
7175 # conditional library dependencies, in any order
7176 enabled afftdn_filter       && prepend avfilter_deps "avcodec"
7177 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
7178 enabled afir_filter         && prepend avfilter_deps "avcodec"
7179 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
7180 enabled aresample_filter    && prepend avfilter_deps "swresample"
7181 enabled atempo_filter       && prepend avfilter_deps "avcodec"
7182 enabled bm3d_filter         && prepend avfilter_deps "avcodec"
7183 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
7184 enabled convolve_filter     && prepend avfilter_deps "avcodec"
7185 enabled deconvolve_filter   && prepend avfilter_deps "avcodec"
7186 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
7187 enabled elbg_filter         && prepend avfilter_deps "avcodec"
7188 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
7189 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
7190 enabled firequalizer_filter && prepend avfilter_deps "avcodec"
7191 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
7192 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
7193 enabled pan_filter          && prepend avfilter_deps "swresample"
7194 enabled pp_filter           && prepend avfilter_deps "postproc"
7195 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
7196 enabled resample_filter && prepend avfilter_deps "avresample"
7197 enabled sab_filter          && prepend avfilter_deps "swscale"
7198 enabled scale_filter    && prepend avfilter_deps "swscale"
7199 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
7200 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
7201 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
7202 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
7203 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
7204 enabled signature_filter    && prepend avfilter_deps "avcodec avformat"
7205 enabled smartblur_filter    && prepend avfilter_deps "swscale"
7206 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
7207 enabled spp_filter          && prepend avfilter_deps "avcodec"
7208 enabled sr_filter           && prepend avfilter_deps "avformat swscale"
7209 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
7210 enabled uspp_filter         && prepend avfilter_deps "avcodec"
7211 enabled zoompan_filter      && prepend avfilter_deps "swscale"
7212
7213 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
7214
7215 #FIXME
7216 enabled_any sdl2_outdev opengl_outdev && enabled sdl2 &&
7217     add_cflags $(filter_out '-Dmain=SDL_main' $sdl2_cflags)
7218
7219 enabled opus_decoder    && prepend avcodec_deps "swresample"
7220
7221 # reorder the items at var $1 to align with the items order at var $2 .
7222 # die if an item at $1 is not at $2 .
7223 reorder_by(){
7224     eval rb_in=\$$1
7225     eval rb_ordered=\$$2
7226
7227     for rb in $rb_in; do
7228         is_in $rb $rb_ordered || die "$rb at \$$1 is not at \$$2"
7229     done
7230
7231     rb_out=
7232     for rb in $rb_ordered; do
7233         is_in $rb $rb_in && rb_out="$rb_out$rb "
7234     done
7235     eval $1=\$rb_out
7236 }
7237
7238 # deps-expand fflib $1:  N x {append all expanded deps; unique}
7239 # within a set of N items, N expansions are enough to expose a cycle.
7240 expand_deps(){
7241     unique ${1}_deps  # required for the early break test.
7242     for dummy in $LIBRARY_LIST; do  # N iteratios
7243         eval deps=\$${1}_deps
7244         append ${1}_deps $(map 'eval echo \$${v}_deps' $deps)
7245         unique ${1}_deps
7246         eval '[ ${#deps} = ${#'${1}_deps'} ]' && break  # doesn't expand anymore
7247     done
7248
7249     eval is_in $1 \$${1}_deps && die "Dependency cycle at ${1}_deps"
7250     reorder_by ${1}_deps LIBRARY_LIST  # linking order is expected later
7251 }
7252
7253 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
7254 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
7255
7256 map 'expand_deps $v' $LIBRARY_LIST
7257
7258 if test "$quiet" != "yes"; then
7259
7260 echo "install prefix            $prefix"
7261 echo "source path               $source_path"
7262 echo "C compiler                $cc"
7263 echo "C library                 $libc_type"
7264 if test "$host_cc" != "$cc"; then
7265     echo "host C compiler           $host_cc"
7266     echo "host C library            $host_libc_type"
7267 fi
7268 echo "ARCH                      $arch ($cpu)"
7269 if test "$build_suffix" != ""; then
7270     echo "build suffix              $build_suffix"
7271 fi
7272 if test "$progs_suffix" != ""; then
7273     echo "progs suffix              $progs_suffix"
7274 fi
7275 if test "$extra_version" != ""; then
7276     echo "version string suffix     $extra_version"
7277 fi
7278 echo "big-endian                ${bigendian-no}"
7279 echo "runtime cpu detection     ${runtime_cpudetect-no}"
7280 if enabled x86; then
7281     echo "standalone assembly       ${x86asm-no}"
7282     echo "x86 assembler             ${x86asmexe}"
7283     echo "MMX enabled               ${mmx-no}"
7284     echo "MMXEXT enabled            ${mmxext-no}"
7285     echo "3DNow! enabled            ${amd3dnow-no}"
7286     echo "3DNow! extended enabled   ${amd3dnowext-no}"
7287     echo "SSE enabled               ${sse-no}"
7288     echo "SSSE3 enabled             ${ssse3-no}"
7289     echo "AESNI enabled             ${aesni-no}"
7290     echo "AVX enabled               ${avx-no}"
7291     echo "AVX2 enabled              ${avx2-no}"
7292     echo "AVX-512 enabled           ${avx512-no}"
7293     echo "XOP enabled               ${xop-no}"
7294     echo "FMA3 enabled              ${fma3-no}"
7295     echo "FMA4 enabled              ${fma4-no}"
7296     echo "i686 features enabled     ${i686-no}"
7297     echo "CMOV is fast              ${fast_cmov-no}"
7298     echo "EBX available             ${ebx_available-no}"
7299     echo "EBP available             ${ebp_available-no}"
7300 fi
7301 if enabled aarch64; then
7302     echo "NEON enabled              ${neon-no}"
7303     echo "VFP enabled               ${vfp-no}"
7304 fi
7305 if enabled arm; then
7306     echo "ARMv5TE enabled           ${armv5te-no}"
7307     echo "ARMv6 enabled             ${armv6-no}"
7308     echo "ARMv6T2 enabled           ${armv6t2-no}"
7309     echo "VFP enabled               ${vfp-no}"
7310     echo "NEON enabled              ${neon-no}"
7311     echo "THUMB enabled             ${thumb-no}"
7312 fi
7313 if enabled mips; then
7314     echo "MIPS FPU enabled          ${mipsfpu-no}"
7315     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
7316     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
7317     echo "MIPS MSA enabled          ${msa-no}"
7318     echo "MIPS MSA2 enabled         ${msa2-no}"
7319     echo "LOONGSON MMI enabled      ${mmi-no}"
7320 fi
7321 if enabled ppc; then
7322     echo "AltiVec enabled           ${altivec-no}"
7323     echo "VSX enabled               ${vsx-no}"
7324     echo "POWER8 enabled            ${power8-no}"
7325     echo "PPC 4xx optimizations     ${ppc4xx-no}"
7326     echo "dcbzl available           ${dcbzl-no}"
7327 fi
7328 echo "debug symbols             ${debug-no}"
7329 echo "strip symbols             ${stripping-no}"
7330 echo "optimize for size         ${small-no}"
7331 echo "optimizations             ${optimizations-no}"
7332 echo "static                    ${static-no}"
7333 echo "shared                    ${shared-no}"
7334 echo "postprocessing support    ${postproc-no}"
7335 echo "network support           ${network-no}"
7336 echo "threading support         ${thread_type-no}"
7337 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
7338 echo "texi2html enabled         ${texi2html-no}"
7339 echo "perl enabled              ${perl-no}"
7340 echo "pod2man enabled           ${pod2man-no}"
7341 echo "makeinfo enabled          ${makeinfo-no}"
7342 echo "makeinfo supports HTML    ${makeinfo_html-no}"
7343 test -n "$random_seed" &&
7344     echo "random seed               ${random_seed}"
7345 echo
7346
7347 echo "External libraries:"
7348 print_enabled '' $EXTERNAL_LIBRARY_LIST $EXTERNAL_AUTODETECT_LIBRARY_LIST | print_in_columns
7349 echo
7350
7351 echo "External libraries providing hardware acceleration:"
7352 print_enabled '' $HWACCEL_LIBRARY_LIST $HWACCEL_AUTODETECT_LIBRARY_LIST | print_in_columns
7353 echo
7354
7355 echo "Libraries:"
7356 print_enabled '' $LIBRARY_LIST | print_in_columns
7357 echo
7358
7359 echo "Programs:"
7360 print_enabled '' $PROGRAM_LIST | print_in_columns
7361 echo
7362
7363 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
7364     echo "Enabled ${type}s:"
7365     eval list=\$$(toupper $type)_LIST
7366     print_enabled '_*' $list | print_in_columns
7367     echo
7368 done
7369
7370 if test -n "$ignore_tests"; then
7371     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
7372     echo "Ignored FATE tests:"
7373     echo $ignore_tests | print_in_columns
7374     echo
7375 fi
7376
7377 echo "License: $license"
7378
7379 fi # test "$quiet" != "yes"
7380
7381 if test -n "$WARN_IF_GETS_DISABLED_LIST"; then
7382     for cfg in $WARN_IF_GETS_DISABLED_LIST; do
7383         if disabled $cfg; then
7384             varname=${cfg}_disable_reason
7385             eval "warn \"Disabled $cfg because \$$varname\""
7386         fi
7387     done
7388 fi
7389
7390 if test -n "$WARNINGS"; then
7391     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
7392     enabled fatal_warnings && exit 1
7393 fi
7394
7395 test -e Makefile || echo "include $source_path/Makefile" > Makefile
7396
7397 esc(){
7398     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
7399 }
7400
7401 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" > ffbuild/config.fate
7402
7403 enabled stripping || strip="echo skipping strip"
7404 enabled stripping || striptype=""
7405
7406 config_files="$TMPH ffbuild/config.mak doc/config.texi"
7407
7408 cat > ffbuild/config.mak <<EOF
7409 # Automatically generated by configure - do not modify!
7410 ifndef FFMPEG_CONFIG_MAK
7411 FFMPEG_CONFIG_MAK=1
7412 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
7413 prefix=$prefix
7414 LIBDIR=\$(DESTDIR)$libdir
7415 SHLIBDIR=\$(DESTDIR)$shlibdir
7416 INCDIR=\$(DESTDIR)$incdir
7417 BINDIR=\$(DESTDIR)$bindir
7418 DATADIR=\$(DESTDIR)$datadir
7419 DOCDIR=\$(DESTDIR)$docdir
7420 MANDIR=\$(DESTDIR)$mandir
7421 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
7422 INSTALL_NAME_DIR=$install_name_dir
7423 SRC_PATH=$source_path
7424 SRC_LINK=$source_link
7425 ifndef MAIN_MAKEFILE
7426 SRC_PATH:=\$(SRC_PATH:.%=..%)
7427 endif
7428 CC_IDENT=$cc_ident
7429 ARCH=$arch
7430 INTRINSICS=$intrinsics
7431 EXTERN_PREFIX=$extern_prefix
7432 CC=$cc
7433 CXX=$cxx
7434 AS=$as
7435 OBJCC=$objcc
7436 LD=$ld
7437 DEPCC=$dep_cc
7438 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
7439 DEPAS=$as
7440 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
7441 X86ASM=$x86asmexe
7442 DEPX86ASM=$x86asmexe
7443 DEPX86ASMFLAGS=\$(X86ASMFLAGS)
7444 AR=$ar
7445 ARFLAGS=$arflags
7446 AR_O=$ar_o
7447 AR_CMD=$ar
7448 NM_CMD=$nm
7449 RANLIB=$ranlib
7450 STRIP=$strip
7451 STRIPTYPE=$striptype
7452 NVCC=$nvcc
7453 CP=cp -p
7454 LN_S=$ln_s
7455 CPPFLAGS=$CPPFLAGS
7456 CFLAGS=$CFLAGS
7457 CXXFLAGS=$CXXFLAGS
7458 OBJCFLAGS=$OBJCFLAGS
7459 ASFLAGS=$ASFLAGS
7460 NVCCFLAGS=$nvccflags
7461 AS_C=$AS_C
7462 AS_O=$AS_O
7463 OBJCC_C=$OBJCC_C
7464 OBJCC_E=$OBJCC_E
7465 OBJCC_O=$OBJCC_O
7466 CC_C=$CC_C
7467 CC_E=$CC_E
7468 CC_O=$CC_O
7469 CXX_C=$CXX_C
7470 CXX_O=$CXX_O
7471 NVCC_C=$NVCC_C
7472 NVCC_O=$NVCC_O
7473 LD_O=$LD_O
7474 X86ASM_O=$X86ASM_O
7475 LD_LIB=$LD_LIB
7476 LD_PATH=$LD_PATH
7477 DLLTOOL=$dlltool
7478 WINDRES=$windres
7479 DEPWINDRES=$dep_cc
7480 DOXYGEN=$doxygen
7481 LDFLAGS=$LDFLAGS
7482 LDEXEFLAGS=$LDEXEFLAGS
7483 LDSOFLAGS=$LDSOFLAGS
7484 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
7485 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
7486 X86ASMFLAGS=$X86ASMFLAGS
7487 MSAFLAGS=$MSAFLAGS
7488 MMIFLAGS=$MMIFLAGS
7489 BUILDSUF=$build_suffix
7490 PROGSSUF=$progs_suffix
7491 FULLNAME=$FULLNAME
7492 LIBPREF=$LIBPREF
7493 LIBSUF=$LIBSUF
7494 LIBNAME=$LIBNAME
7495 SLIBPREF=$SLIBPREF
7496 SLIBSUF=$SLIBSUF
7497 EXESUF=$EXESUF
7498 EXTRA_VERSION=$extra_version
7499 CCDEP=$CCDEP
7500 CXXDEP=$CXXDEP
7501 CCDEP_FLAGS=$CCDEP_FLAGS
7502 ASDEP=$ASDEP
7503 ASDEP_FLAGS=$ASDEP_FLAGS
7504 X86ASMDEP=$X86ASMDEP
7505 X86ASMDEP_FLAGS=$X86ASMDEP_FLAGS
7506 CC_DEPFLAGS=$CC_DEPFLAGS
7507 AS_DEPFLAGS=$AS_DEPFLAGS
7508 X86ASM_DEPFLAGS=$X86ASM_DEPFLAGS
7509 HOSTCC=$host_cc
7510 HOSTLD=$host_ld
7511 HOSTCFLAGS=$host_cflags
7512 HOSTCPPFLAGS=$host_cppflags
7513 HOSTEXESUF=$HOSTEXESUF
7514 HOSTLDFLAGS=$host_ldflags
7515 HOSTEXTRALIBS=$host_extralibs
7516 DEPHOSTCC=$host_cc
7517 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
7518 HOSTCCDEP=$HOSTCCDEP
7519 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
7520 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
7521 HOSTCC_C=$HOSTCC_C
7522 HOSTCC_O=$HOSTCC_O
7523 HOSTLD_O=$HOSTLD_O
7524 TARGET_EXEC=$target_exec $target_exec_args
7525 TARGET_PATH=$target_path
7526 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
7527 CFLAGS-ffplay=${sdl2_cflags}
7528 CFLAGS_HEADERS=$CFLAGS_HEADERS
7529 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
7530 EXTRALIBS=$extralibs
7531 COMPAT_OBJS=$compat_objs
7532 INSTALL=$install
7533 LIBTARGET=${LIBTARGET}
7534 SLIBNAME=${SLIBNAME}
7535 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
7536 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
7537 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
7538 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
7539 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
7540 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
7541 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
7542 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
7543 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
7544 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
7545 NOREDZONE_FLAGS=$noredzone_flags
7546 LIBFUZZER_PATH=$libfuzzer_path
7547 IGNORE_TESTS=$ignore_tests
7548 EOF
7549
7550 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> ffbuild/config.mak' $LIBRARY_LIST
7551
7552 for entry in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
7553     eval echo "EXTRALIBS-${entry}=\$${entry}_extralibs" >> ffbuild/config.mak
7554 done
7555
7556 cat > $TMPH <<EOF
7557 /* Automatically generated by configure - do not modify! */
7558 #ifndef FFMPEG_CONFIG_H
7559 #define FFMPEG_CONFIG_H
7560 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
7561 #define FFMPEG_LICENSE "$(c_escape $license)"
7562 #define CONFIG_THIS_YEAR 2020
7563 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
7564 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
7565 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
7566 #define av_restrict $restrict_keyword
7567 #define EXTERN_PREFIX "${extern_prefix}"
7568 #define EXTERN_ASM ${extern_prefix}
7569 #define BUILDSUF "$build_suffix"
7570 #define SLIBSUF "$SLIBSUF"
7571 #define HAVE_MMX2 HAVE_MMXEXT
7572 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
7573 EOF
7574
7575 test -n "$assert_level" &&
7576     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
7577
7578 test -n "$malloc_prefix" &&
7579     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
7580
7581 if enabled x86asm; then
7582     append config_files $TMPASM
7583     cat > $TMPASM <<EOF
7584 ; Automatically generated by configure - do not modify!
7585 EOF
7586 fi
7587
7588 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
7589
7590
7591 mkdir -p doc
7592 mkdir -p tests
7593 mkdir -p tests/api
7594 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
7595
7596 print_config ARCH_   "$config_files" $ARCH_LIST
7597 print_config HAVE_   "$config_files" $HAVE_LIST
7598 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
7599                                      $CONFIG_EXTRA      \
7600                                      $ALL_COMPONENTS    \
7601
7602 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
7603 echo "endif # FFMPEG_CONFIG_MAK" >> ffbuild/config.mak
7604
7605 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
7606 cp_if_changed $TMPH config.h
7607 touch ffbuild/.config
7608
7609 enabled x86asm && cp_if_changed $TMPASM config.asm
7610
7611 cat > $TMPH <<EOF
7612 /* Generated by ffmpeg configure */
7613 #ifndef AVUTIL_AVCONFIG_H
7614 #define AVUTIL_AVCONFIG_H
7615 EOF
7616
7617 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
7618
7619 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
7620
7621 cp_if_changed $TMPH libavutil/avconfig.h
7622
7623 # full_filter_name_foo=vf_foo
7624 # full_filter_name_bar=asrc_bar
7625 # ...
7626 eval "$(sed -n "s/^extern AVFilter ff_\([avfsinkrc]\{2,5\}\)_\(.*\);/full_filter_name_\2=\1_\2/p" $source_path/libavfilter/allfilters.c)"
7627
7628 # generate the lists of enabled components
7629 print_enabled_components(){
7630     file=$1
7631     struct_name=$2
7632     name=$3
7633     shift 3
7634     echo "static const $struct_name * const $name[] = {" > $TMPH
7635     for c in $*; do
7636         if enabled $c; then
7637             case $name in
7638                 filter_list)
7639                     eval c=\$full_filter_name_${c%_filter}
7640                 ;;
7641                 indev_list)
7642                     c=${c%_indev}_demuxer
7643                 ;;
7644                 outdev_list)
7645                     c=${c%_outdev}_muxer
7646                 ;;
7647             esac
7648             printf "    &ff_%s,\n" $c >> $TMPH
7649         fi
7650     done
7651     if [ "$name" = "filter_list" ]; then
7652         for c in asrc_abuffer vsrc_buffer asink_abuffer vsink_buffer; do
7653             printf "    &ff_%s,\n" $c >> $TMPH
7654         done
7655     fi
7656     echo "    NULL };" >> $TMPH
7657     cp_if_changed $TMPH $file
7658 }
7659
7660 print_enabled_components libavfilter/filter_list.c AVFilter filter_list $FILTER_LIST
7661 print_enabled_components libavcodec/codec_list.c AVCodec codec_list $CODEC_LIST
7662 print_enabled_components libavcodec/parser_list.c AVCodecParser parser_list $PARSER_LIST
7663 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
7664 print_enabled_components libavformat/demuxer_list.c AVInputFormat demuxer_list $DEMUXER_LIST
7665 print_enabled_components libavformat/muxer_list.c AVOutputFormat muxer_list $MUXER_LIST
7666 print_enabled_components libavdevice/indev_list.c AVInputFormat indev_list $INDEV_LIST
7667 print_enabled_components libavdevice/outdev_list.c AVOutputFormat outdev_list $OUTDEV_LIST
7668 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
7669
7670 # Settings for pkg-config files
7671
7672 cat > $TMPH <<EOF
7673 # Automatically generated by configure - do not modify!
7674 shared=$shared
7675 build_suffix=$build_suffix
7676 prefix=$prefix
7677 libdir=$libdir
7678 incdir=$incdir
7679 rpath=$(enabled rpath && echo "-Wl,-rpath,\${libdir}")
7680 source_path=${source_path}
7681 LIBPREF=${LIBPREF}
7682 LIBSUF=${LIBSUF}
7683 extralibs_avutil="$avutil_extralibs"
7684 extralibs_avcodec="$avcodec_extralibs"
7685 extralibs_avformat="$avformat_extralibs"
7686 extralibs_avdevice="$avdevice_extralibs"
7687 extralibs_avfilter="$avfilter_extralibs"
7688 extralibs_avresample="$avresample_extralibs"
7689 extralibs_postproc="$postproc_extralibs"
7690 extralibs_swscale="$swscale_extralibs"
7691 extralibs_swresample="$swresample_extralibs"
7692 EOF
7693
7694 for lib in $LIBRARY_LIST; do
7695     lib_deps="$(eval echo \$${lib}_deps)"
7696     echo ${lib}_deps=\"$lib_deps\" >> $TMPH
7697 done
7698
7699 cp_if_changed $TMPH ffbuild/config.sh