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