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

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