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

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