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-libopus         enable Opus de/encoding via libopus [no]
 257   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 258   --enable-librabbitmq     enable RabbitMQ library [no]
 259   --enable-librav1e        enable AV1 encoding via rav1e [no]
 260   --enable-librsvg         enable SVG rasterization via librsvg [no]
 261   --enable-librubberband   enable rubberband needed for rubberband filter [no]
 262   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 263   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 264   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
 265   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
 266   --enable-libsoxr         enable Include libsoxr resampling [no]
 267   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 268   --enable-libsrt          enable Haivision SRT protocol via libsrt [no]
 269   --enable-libssh          enable SFTP protocol via libssh [no]
 270   --enable-libtensorflow   enable TensorFlow as a DNN module backend
 271                            for DNN based filters like sr [no]
 272   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
 273   --enable-libtheora       enable Theora encoding via libtheora [no]
 274   --enable-libtls          enable LibreSSL (via libtls), needed for https support
 275                            if openssl, gnutls or mbedtls is not used [no]
 276   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 277   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 278   --enable-libvidstab      enable video stabilization using vid.stab [no]
 279   --enable-libvmaf         enable vmaf filter via libvmaf [no]
 280   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 281   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 282                            native implementation exists [no]
 283   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 284   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 285   --enable-libwebp         enable WebP encoding via libwebp [no]
 286   --enable-libx264         enable H.264 encoding via x264 [no]
 287   --enable-libx265         enable HEVC encoding via x265 [no]
 288   --enable-libxavs         enable AVS encoding via xavs [no]
 289   --enable-libxavs2        enable AVS2 encoding via xavs2 [no]
 290   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
 291   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
 292   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
 293   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
 294   --enable-libxvid         enable Xvid encoding via xvidcore,
 295                            native MPEG-4/Xvid encoder exists [no]
 296   --enable-libxml2         enable XML parsing using the C library libxml2, needed
 297                            for dash demuxing support [no]
 298   --enable-libzimg         enable z.lib, needed for zscale filter [no]
 299   --enable-libzmq          enable message passing via libzmq [no]
 300   --enable-libzvbi         enable teletext support via libzvbi [no]
 301   --enable-lv2             enable LV2 audio filtering [no]
 302   --disable-lzma           disable lzma [autodetect]
 303   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
 304   --enable-mbedtls         enable mbedTLS, needed for https support
 305                            if openssl, gnutls or libtls is not used [no]
 306   --enable-mediacodec      enable Android MediaCodec support [no]
 307   --enable-mediafoundation enable encoding via MediaFoundation [auto]
 308   --enable-libmysofa       enable libmysofa, needed for sofalizer filter [no]
 309   --enable-openal          enable OpenAL 1.1 capture support [no]
 310   --enable-opencl          enable OpenCL processing [no]
 311   --enable-opengl          enable OpenGL rendering [no]
 312   --enable-openssl         enable openssl, needed for https support
 313                            if gnutls, libtls or mbedtls is not used [no]
 314   --enable-pocketsphinx    enable PocketSphinx, needed for asr filter [no]
 315   --disable-sndio          disable sndio support [autodetect]
 316   --disable-schannel       disable SChannel SSP, needed for TLS support on
 317                            Windows if openssl and gnutls are not used [autodetect]
 318   --disable-sdl2           disable sdl2 [autodetect]
 319   --disable-securetransport disable Secure Transport, needed for TLS support
 320                            on OSX if openssl and gnutls are not used [autodetect]
 321   --enable-vapoursynth     enable VapourSynth demuxer [no]
 322   --enable-vulkan          enable Vulkan code [no]
 323   --disable-xlib           disable xlib [autodetect]
 324   --disable-zlib           disable zlib [autodetect]
 325
 326   The following libraries provide various hardware acceleration features:
 327   --disable-amf            disable AMF video encoding code [autodetect]
 328   --disable-audiotoolbox   disable Apple AudioToolbox code [autodetect]
 329   --enable-cuda-nvcc       enable Nvidia CUDA compiler [no]
 330   --disable-cuda-llvm      disable CUDA compilation using clang [autodetect]
 331   --disable-cuvid          disable Nvidia CUVID support [autodetect]
 332   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
 333   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
 334   --disable-ffnvcodec      disable dynamically linked Nvidia code [autodetect]
 335   --enable-libdrm          enable DRM code (Linux) [no]
 336   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
 337   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
 338   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
 339   --disable-nvdec          disable Nvidia video decoding acceleration (via hwaccel) [autodetect]
 340   --disable-nvenc          disable Nvidia video encoding code [autodetect]
 341   --enable-omx             enable OpenMAX IL code [no]
 342   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
 343   --enable-rkmpp           enable Rockchip Media Process Platform code [no]
 344   --disable-v4l2-m2m       disable V4L2 mem2mem code [autodetect]
 345   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
 346   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
 347   --disable-videotoolbox   disable VideoToolbox code [autodetect]
 348
 349 Toolchain options:
 350   --arch=ARCH              select architecture [$arch]
 351   --cpu=CPU                select the minimum required CPU (affects
 352                            instruction selection, may crash on older CPUs)
 353   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 354   --progs-suffix=SUFFIX    program name suffix []
 355   --enable-cross-compile   assume a cross-compiler is used
 356   --sysroot=PATH           root of cross-build tree
 357   --sysinclude=PATH        location of cross-build system headers
 358   --target-os=OS           compiler targets OS [$target_os]
 359   --target-exec=CMD        command to run executables on target
 360   --target-path=DIR        path to view of build directory on target
 361   --target-samples=DIR     path to samples directory on target
 362   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 363   --toolchain=NAME         set tool defaults according to NAME
 364                            (gcc-asan, clang-asan, gcc-msan, clang-msan,
 365                            gcc-tsan, clang-tsan, gcc-usan, clang-usan,
 366                            valgrind-massif, valgrind-memcheck,
 367                            msvc, icl, gcov, llvm-cov, hardened)
 368   --nm=NM                  use nm tool NM [$nm_default]
 369   --ar=AR                  use archive tool AR [$ar_default]
 370   --as=AS                  use assembler AS [$as_default]
 371   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
 372   --strip=STRIP            use strip tool STRIP [$strip_default]
 373   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 374   --x86asmexe=EXE          use nasm-compatible assembler EXE [$x86asmexe_default]
 375   --cc=CC                  use C compiler CC [$cc_default]
 376   --cxx=CXX                use C compiler CXX [$cxx_default]
 377   --objcc=OCC              use ObjC compiler OCC [$cc_default]
 378   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 379   --nvcc=NVCC              use Nvidia CUDA compiler NVCC or clang [$nvcc_default]
 380   --ld=LD                  use linker LD [$ld_default]
 381   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 382   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 383   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 384   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
 385   --host-cc=HOSTCC         use host C compiler HOSTCC
 386   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 387   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 388   --host-ld=HOSTLD         use host linker HOSTLD
 389   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 390   --host-extralibs=HLIBS   use libs HLIBS when linking for host
 391   --host-os=OS             compiler host OS [$target_os]
 392   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 393   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 394   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
 395   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 396   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 397   --extra-ldsoflags=ELDFLAGS add ELDFLAGS to LDSOFLAGS [$LDSOFLAGS]
 398   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 399   --extra-version=STRING   version string suffix []
 400   --optflags=OPTFLAGS      override optimization-related compiler flags
 401   --nvccflags=NVCCFLAGS    override nvcc flags [$nvccflags_default]
 402   --build-suffix=SUFFIX    library name suffix []
 403   --enable-pic             build position-independent code
 404   --enable-thumb           compile for Thumb instruction set
 405   --enable-lto             use link-time optimization
 406   --env="ENV=override"     override the environment variables
 407
 408 Advanced options (experts only):
 409   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 410   --custom-allocator=NAME  use a supported custom allocator
 411   --disable-symver         disable symbol versioning
 412   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 413   --disable-safe-bitstream-reader
 414                            disable buffer boundary checking in bitreaders
 415                            (faster, but may crash)
 416   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
 417
 418 Optimization options (experts only):
 419   --disable-asm            disable all assembly optimizations
 420   --disable-altivec        disable AltiVec optimizations
 421   --disable-vsx            disable VSX optimizations
 422   --disable-power8         disable POWER8 optimizations
 423   --disable-amd3dnow       disable 3DNow! optimizations
 424   --disable-amd3dnowext    disable 3DNow! extended optimizations
 425   --disable-mmx            disable MMX optimizations
 426   --disable-mmxext         disable MMXEXT optimizations
 427   --disable-sse            disable SSE optimizations
 428   --disable-sse2           disable SSE2 optimizations
 429   --disable-sse3           disable SSE3 optimizations
 430   --disable-ssse3          disable SSSE3 optimizations
 431   --disable-sse4           disable SSE4 optimizations
 432   --disable-sse42          disable SSE4.2 optimizations
 433   --disable-avx            disable AVX optimizations
 434   --disable-xop            disable XOP optimizations
 435   --disable-fma3           disable FMA3 optimizations
 436   --disable-fma4           disable FMA4 optimizations
 437   --disable-avx2           disable AVX2 optimizations
 438   --disable-avx512         disable AVX-512 optimizations
 439   --disable-aesni          disable AESNI optimizations
 440   --disable-armv5te        disable armv5te optimizations
 441   --disable-armv6          disable armv6 optimizations
 442   --disable-armv6t2        disable armv6t2 optimizations
 443   --disable-vfp            disable VFP optimizations
 444   --disable-neon           disable NEON optimizations
 445   --disable-inline-asm     disable use of inline assembly
 446   --disable-x86asm         disable use of standalone x86 assembly
 447   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
 448   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 449   --disable-msa            disable MSA optimizations
 450   --disable-msa2           disable MSA2 optimizations
 451   --disable-mipsfpu        disable floating point MIPS optimizations
 452   --disable-mmi            disable Loongson SIMD optimizations
 453   --disable-fast-unaligned consider unaligned accesses slow
 454
 455 Developer options (useful when working on FFmpeg itself):
 456   --disable-debug          disable debugging symbols
 457   --enable-debug=LEVEL     set the debug level [$debuglevel]
 458   --disable-optimizations  disable compiler optimizations
 459   --enable-extra-warnings  enable more compiler warnings
 460   --disable-stripping      disable stripping of executables and shared libraries
 461   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 462                            2 causes a slowdown at runtime.
 463   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 464   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 465                            leaks and errors, using the specified valgrind binary.
 466                            Cannot be combined with --target-exec
 467   --enable-ftrapv          Trap arithmetic overflows
 468   --samples=PATH           location of test samples for FATE, if not set use
 469                            \$FATE_SAMPLES at make invocation time.
 470   --enable-neon-clobber-test check NEON registers for clobbering (should be
 471                            used only for debugging purposes)
 472   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 473                            should be used only for debugging purposes)
 474   --enable-random          randomly enable/disable components
 475   --disable-random
 476   --enable-random=LIST     randomly enable/disable specific components or
 477   --disable-random=LIST    component groups. LIST is a comma-separated list
 478                            of NAME[:PROB] entries where NAME is a component
 479                            (group) and PROB the probability associated with
 480                            NAME (default 0.5).
 481   --random-seed=VALUE      seed value for --enable/disable-random
 482   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 483                            (only applies to --disable-optimizations builds)
 484   --enable-ossfuzz         Enable building fuzzer tool
 485   --libfuzzer=PATH         path to libfuzzer
 486   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
 487                            in the name) of tests whose result is ignored
 488   --enable-linux-perf      enable Linux Performance Monitor API
 489   --disable-large-tests    disable tests that use a large amount of memory
 490
 491 NOTE: Object files are built at the place where configure is launched.
 492 EOF
 493   exit 0
 494 }
 495
 496 if test -t 1 && which tput >/dev/null 2>&1; then
 497     ncolors=$(tput colors)
 498     if test -n "$ncolors" && test $ncolors -ge 8; then
 499         bold_color=$(tput bold)
 500         warn_color=$(tput setaf 3)
 501         error_color=$(tput setaf 1)
 502         reset_color=$(tput sgr0)
 503     fi
 504     # 72 used instead of 80 since that's the default of pr
 505     ncols=$(tput cols)
 506 fi
 507 : ${ncols:=72}
 508
 509 log(){
 510     echo "$@" >> $logfile
 511 }
 512
 513 log_file(){
 514     log BEGIN "$1"
 515     log_file_i=1
 516     while IFS= read -r log_file_line; do
 517         printf '%5d\t%s\n' "$log_file_i" "$log_file_line"
 518         log_file_i=$(($log_file_i+1))
 519     done < "$1" >> "$logfile"
 520     log END "$1"
 521 }
 522
 523 warn(){
 524     log "WARNING: $*"
 525     WARNINGS="${WARNINGS}WARNING: $*\n"
 526 }
 527
 528 die(){
 529     log "$@"
 530     echo "$error_color$bold_color$@$reset_color"
 531     cat <<EOF
 532
 533 If you think configure made a mistake, make sure you are using the latest
 534 version from Git.  If the latest version fails, report the problem to the
 535 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 536 EOF
 537     if disabled logging; then
 538         cat <<EOF
 539 Rerun configure with logging enabled (do not use --disable-logging), and
 540 include the log this produces with your report.
 541 EOF
 542     else
 543         cat <<EOF
 544 Include the log file "$logfile" produced by configure as this will help
 545 solve the problem.
 546 EOF
 547     fi
 548     exit 1
 549 }
 550
 551 # Avoid locale weirdness, besides we really just want to translate ASCII.
 552 toupper(){
 553     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 554 }
 555
 556 tolower(){
 557     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 558 }
 559
 560 c_escape(){
 561     echo "$*" | sed 's/["\\]/\\\0/g'
 562 }
 563
 564 sh_quote(){
 565     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 566     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 567     echo "$v"
 568 }
 569
 570 cleanws(){
 571     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
 572 }
 573
 574 filter(){
 575     pat=$1
 576     shift
 577     for v; do
 578         eval "case '$v' in $pat) printf '%s ' '$v' ;; esac"
 579     done
 580 }
 581
 582 filter_out(){
 583     pat=$1
 584     shift
 585     for v; do
 586         eval "case '$v' in $pat) ;; *) printf '%s ' '$v' ;; esac"
 587     done
 588 }
 589
 590 map(){
 591     m=$1
 592     shift
 593     for v; do eval $m; done
 594 }
 595
 596 add_suffix(){
 597     suffix=$1
 598     shift
 599     for v; do echo ${v}${suffix}; done
 600 }
 601
 602 remove_suffix(){
 603     suffix=$1
 604     shift
 605     for v; do echo ${v%$suffix}; done
 606 }
 607
 608 set_all(){
 609     value=$1
 610     shift
 611     for var in $*; do
 612         eval $var=$value
 613     done
 614 }
 615
 616 set_weak(){
 617     value=$1
 618     shift
 619     for var; do
 620         eval : \${$var:=$value}
 621     done
 622 }
 623
 624 sanitize_var_name(){
 625     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 626 }
 627
 628 set_sanitized(){
 629     var=$1
 630     shift
 631     eval $(sanitize_var_name "$var")='$*'
 632 }
 633
 634 get_sanitized(){
 635     eval echo \$$(sanitize_var_name "$1")
 636 }
 637
 638 pushvar(){
 639     for pvar in $*; do
 640         eval level=\${${pvar}_level:=0}
 641         eval ${pvar}_${level}="\$$pvar"
 642         eval ${pvar}_level=$(($level+1))
 643     done
 644 }
 645
 646 popvar(){
 647     for pvar in $*; do
 648         eval level=\${${pvar}_level:-0}
 649         test $level = 0 && continue
 650         eval level=$(($level-1))
 651         eval $pvar="\${${pvar}_${level}}"
 652         eval ${pvar}_level=$level
 653         eval unset ${pvar}_${level}
 654     done
 655 }
 656
 657 request(){
 658     for var in $*; do
 659         eval ${var}_requested=yes
 660         eval $var=
 661     done
 662 }
 663
 664 warn_if_gets_disabled(){
 665     for var in $*; do
 666         WARN_IF_GETS_DISABLED_LIST="$WARN_IF_GETS_DISABLED_LIST $var"
 667     done
 668 }
 669
 670 enable(){
 671     set_all yes $*
 672 }
 673
 674 disable(){
 675     set_all no $*
 676 }
 677
 678 disable_with_reason(){
 679     disable $1
 680     eval "${1}_disable_reason=\"$2\""
 681     if requested $1; then
 682         die "ERROR: $1 requested, but $2"
 683     fi
 684 }
 685
 686 enable_weak(){
 687     set_weak yes $*
 688 }
 689
 690 disable_weak(){
 691     set_weak no $*
 692 }
 693
 694 enable_sanitized(){
 695     for var; do
 696         enable $(sanitize_var_name $var)
 697     done
 698 }
 699
 700 disable_sanitized(){
 701     for var; do
 702         disable $(sanitize_var_name $var)
 703     done
 704 }
 705
 706 do_enable_deep(){
 707     for var; do
 708         enabled $var && continue
 709         set -- $var
 710         eval enable_deep \$${var}_select
 711         var=$1
 712         eval enable_deep_weak \$${var}_suggest
 713     done
 714 }
 715
 716 enable_deep(){
 717     do_enable_deep $*
 718     enable $*
 719 }
 720
 721 enable_deep_weak(){
 722     for var; do
 723         disabled $var && continue
 724         set -- $var
 725         do_enable_deep $var
 726         var=$1
 727         enable_weak $var
 728     done
 729 }
 730
 731 requested(){
 732     test "${1#!}" = "$1" && op="=" || op="!="
 733     eval test "x\$${1#!}_requested" $op "xyes"
 734 }
 735
 736 enabled(){
 737     test "${1#!}" = "$1" && op="=" || op="!="
 738     eval test "x\$${1#!}" $op "xyes"
 739 }
 740
 741 disabled(){
 742     test "${1#!}" = "$1" && op="=" || op="!="
 743     eval test "x\$${1#!}" $op "xno"
 744 }
 745
 746 enabled_all(){
 747     for opt; do
 748         enabled $opt || return 1
 749     done
 750 }
 751
 752 disabled_all(){
 753     for opt; do
 754         disabled $opt || return 1
 755     done
 756 }
 757
 758 enabled_any(){
 759     for opt; do
 760         enabled $opt && return 0
 761     done
 762 }
 763
 764 disabled_any(){
 765     for opt; do
 766         disabled $opt && return 0
 767     done
 768     return 1
 769 }
 770
 771 set_default(){
 772     for opt; do
 773         eval : \${$opt:=\$${opt}_default}
 774     done
 775 }
 776
 777 is_in(){
 778     value=$1
 779     shift
 780     for var in $*; do
 781         [ $var = $value ] && return 0
 782     done
 783     return 1
 784 }
 785
 786 # The cfg loop is very hot (several thousands iterations), and in bash also
 787 # potentialy quite slow. Try to abort the iterations early, preferably without
 788 # calling functions. 70%+ of the time cfg is already done or without deps.
 789 check_deps(){
 790     for cfg; do
 791         eval [ x\$${cfg}_checking = xdone ] && continue
 792         eval [ x\$${cfg}_checking = xinprogress ] && die "Circular dependency for $cfg."
 793
 794         eval "
 795         dep_all=\$${cfg}_deps
 796         dep_any=\$${cfg}_deps_any
 797         dep_con=\$${cfg}_conflict
 798         dep_sel=\$${cfg}_select
 799         dep_sgs=\$${cfg}_suggest
 800         dep_ifa=\$${cfg}_if
 801         dep_ifn=\$${cfg}_if_any
 802         "
 803
 804         # most of the time here $cfg has no deps - avoid costly no-op work
 805         if [ "$dep_all$dep_any$dep_con$dep_sel$dep_sgs$dep_ifa$dep_ifn" ]; then
 806             eval ${cfg}_checking=inprogress
 807
 808             set -- $cfg "$dep_all" "$dep_any" "$dep_con" "$dep_sel" "$dep_sgs" "$dep_ifa" "$dep_ifn"
 809             check_deps $dep_all $dep_any $dep_con $dep_sel $dep_sgs $dep_ifa $dep_ifn
 810             cfg=$1; dep_all=$2; dep_any=$3; dep_con=$4; dep_sel=$5 dep_sgs=$6; dep_ifa=$7; dep_ifn=$8
 811
 812             [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 813             [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 814             enabled_all  $dep_all || { disable_with_reason $cfg "not all dependencies are satisfied: $dep_all"; }
 815             enabled_any  $dep_any || { disable_with_reason $cfg "not any dependency is satisfied: $dep_any"; }
 816             disabled_all $dep_con || { disable_with_reason $cfg "some conflicting dependencies are unsatisfied: $dep_con"; }
 817             disabled_any $dep_sel && { disable_with_reason $cfg "some selected dependency is unsatisfied: $dep_sel"; }
 818
 819             enabled $cfg && enable_deep_weak $dep_sel $dep_sgs
 820
 821             for dep in $dep_all $dep_any $dep_sel $dep_sgs; do
 822                 # filter out library deps, these do not belong in extralibs
 823                 is_in $dep $LIBRARY_LIST && continue
 824                 enabled $dep && eval append ${cfg}_extralibs ${dep}_extralibs
 825             done
 826         fi
 827
 828         eval ${cfg}_checking=done
 829     done
 830 }
 831
 832 print_config(){
 833     pfx=$1
 834     files=$2
 835     shift 2
 836     map 'eval echo "$v \${$v:-no}"' "$@" |
 837     awk "BEGIN { split(\"$files\", files) }
 838         {
 839             c = \"$pfx\" toupper(\$1);
 840             v = \$2;
 841             sub(/yes/, 1, v);
 842             sub(/no/,  0, v);
 843             for (f in files) {
 844                 file = files[f];
 845                 if (file ~ /\\.h\$/) {
 846                     printf(\"#define %s %d\\n\", c, v) >>file;
 847                 } else if (file ~ /\\.asm\$/) {
 848                     printf(\"%%define %s %d\\n\", c, v) >>file;
 849                 } else if (file ~ /\\.mak\$/) {
 850                     n = -v ? \"\" : \"!\";
 851                     printf(\"%s%s=yes\\n\", n, c) >>file;
 852                 } else if (file ~ /\\.texi\$/) {
 853                     pre = -v ? \"\" : \"@c \";
 854                     yesno = \$2;
 855                     c2 = tolower(c);
 856                     gsub(/_/, \"-\", c2);
 857                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 858                 }
 859             }
 860         }"
 861 }
 862
 863 print_enabled(){
 864     suf=$1
 865     shift
 866     for v; do
 867         enabled $v && printf "%s\n" ${v%$suf}
 868     done
 869 }
 870
 871 append(){
 872     var=$1
 873     shift
 874     eval "$var=\"\$$var $*\""
 875 }
 876
 877 prepend(){
 878     var=$1
 879     shift
 880     eval "$var=\"$* \$$var\""
 881 }
 882
 883 reverse () {
 884     eval '
 885         reverse_out=
 886         for v in $'$1'; do
 887             reverse_out="$v $reverse_out"
 888         done
 889         '$1'=$reverse_out
 890     '
 891 }
 892
 893 # keeps the last occurence of each non-unique item
 894 unique(){
 895     unique_out=
 896     eval unique_in=\$$1
 897     reverse unique_in
 898     for v in $unique_in; do
 899         # " $unique_out" +space such that every item is surrounded with spaces
 900         case " $unique_out" in *" $v "*) continue; esac  # already in list
 901         unique_out="$unique_out$v "
 902     done
 903     reverse unique_out
 904     eval $1=\$unique_out
 905 }
 906
 907 resolve(){
 908     resolve_out=
 909     eval resolve_in=\$$1
 910     for v in $resolve_in; do
 911         eval 'resolve_out="$resolve_out$'$v' "'
 912     done
 913     eval $1=\$resolve_out
 914 }
 915
 916 add_cppflags(){
 917     append CPPFLAGS "$@"
 918 }
 919
 920 add_cflags(){
 921     append CFLAGS $($cflags_filter "$@")
 922 }
 923
 924 add_cflags_headers(){
 925     append CFLAGS_HEADERS $($cflags_filter "$@")
 926 }
 927
 928 add_cxxflags(){
 929     append CXXFLAGS $($cflags_filter "$@")
 930 }
 931
 932 add_objcflags(){
 933     append OBJCFLAGS $($objcflags_filter "$@")
 934 }
 935
 936 add_asflags(){
 937     append ASFLAGS $($asflags_filter "$@")
 938 }
 939
 940 add_ldflags(){
 941     append LDFLAGS $($ldflags_filter "$@")
 942 }
 943
 944 add_ldexeflags(){
 945     append LDEXEFLAGS $($ldflags_filter "$@")
 946 }
 947
 948 add_ldsoflags(){
 949     append LDSOFLAGS $($ldflags_filter "$@")
 950 }
 951
 952 add_extralibs(){
 953     prepend extralibs $($ldflags_filter "$@")
 954 }
 955
 956 add_stripflags(){
 957     append ASMSTRIPFLAGS "$@"
 958 }
 959
 960 add_host_cppflags(){
 961     append host_cppflags "$@"
 962 }
 963
 964 add_host_cflags(){
 965     append host_cflags $($host_cflags_filter "$@")
 966 }
 967
 968 add_host_ldflags(){
 969     append host_ldflags $($host_ldflags_filter "$@")
 970 }
 971
 972 add_compat(){
 973     append compat_objs $1
 974     shift
 975     map 'add_cppflags -D$v' "$@"
 976 }
 977
 978 test_cmd(){
 979     log "$@"
 980     "$@" >> $logfile 2>&1
 981 }
 982
 983 test_stat(){
 984     log test_stat "$@"
 985     stat "$1" >> $logfile 2>&1
 986 }
 987
 988 cc_e(){
 989     eval printf '%s\\n' $CC_E
 990 }
 991
 992 cc_o(){
 993     eval printf '%s\\n' $CC_O
 994 }
 995
 996 as_o(){
 997     eval printf '%s\\n' $AS_O
 998 }
 999
1000 x86asm_o(){
1001     eval printf '%s\\n' $X86ASM_O
1002 }
1003
1004 ld_o(){
1005     eval printf '%s\\n' $LD_O
1006 }
1007
1008 hostcc_e(){
1009     eval printf '%s\\n' $HOSTCC_E
1010 }
1011
1012 hostcc_o(){
1013     eval printf '%s\\n' $HOSTCC_O
1014 }
1015
1016 nvcc_o(){
1017     eval printf '%s\\n' $NVCC_O
1018 }
1019
1020 test_cc(){
1021     log test_cc "$@"
1022     cat > $TMPC
1023     log_file $TMPC
1024     test_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
1025 }
1026
1027 test_cxx(){
1028     log test_cxx "$@"
1029     cat > $TMPCPP
1030     log_file $TMPCPP
1031     test_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
1032 }
1033
1034 test_objcc(){
1035     log test_objcc "$@"
1036     cat > $TMPM
1037     log_file $TMPM
1038     test_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
1039 }
1040
1041 test_nvcc(){
1042     log test_nvcc "$@"
1043     cat > $TMPCU
1044     log_file $TMPCU
1045     tmpcu_=$TMPCU
1046     tmpo_=$TMPO
1047     [ -x "$(command -v cygpath)" ] && tmpcu_=$(cygpath -m $tmpcu_) && tmpo_=$(cygpath -m $tmpo_)
1048     test_cmd $nvcc $nvccflags "$@" $NVCC_C $(nvcc_o $tmpo_) $tmpcu_
1049 }
1050
1051 check_nvcc() {
1052     log check_nvcc "$@"
1053     name=$1
1054     shift 1
1055     disabled $name && return
1056     disable $name
1057     test_nvcc "$@" <<EOF && enable $name
1058 extern "C" {
1059     __global__ void hello(unsigned char *data) {}
1060 }
1061 EOF
1062 }
1063
1064 test_cpp(){
1065     log test_cpp "$@"
1066     cat > $TMPC
1067     log_file $TMPC
1068     test_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
1069 }
1070
1071 test_as(){
1072     log test_as "$@"
1073     cat > $TMPS
1074     log_file $TMPS
1075     test_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
1076 }
1077
1078 test_x86asm(){
1079     log test_x86asm "$@"
1080     echo "$1" > $TMPASM
1081     log_file $TMPASM
1082     shift
1083     test_cmd $x86asmexe $X86ASMFLAGS -Werror "$@" $(x86asm_o $TMPO) $TMPASM
1084 }
1085
1086 check_cmd(){
1087     log check_cmd "$@"
1088     cmd=$1
1089     disabled $cmd && return
1090     disable $cmd
1091     test_cmd $@ && enable $cmd
1092 }
1093
1094 check_as(){
1095     log check_as "$@"
1096     name=$1
1097     code=$2
1098     shift 2
1099     disable $name
1100     test_as $@ <<EOF && enable $name
1101 $code
1102 EOF
1103 }
1104
1105 check_inline_asm(){
1106     log check_inline_asm "$@"
1107     name="$1"
1108     code="$2"
1109     shift 2
1110     disable $name
1111     test_cc "$@" <<EOF && enable $name
1112 void foo(void){ __asm__ volatile($code); }
1113 EOF
1114 }
1115
1116 check_inline_asm_flags(){
1117     log check_inline_asm_flags "$@"
1118     name="$1"
1119     code="$2"
1120     flags=''
1121     shift 2
1122     while [ "$1" != "" ]; do
1123       append flags $1
1124       shift
1125     done;
1126     disable $name
1127     cat > $TMPC <<EOF
1128 void foo(void){ __asm__ volatile($code); }
1129 EOF
1130     log_file $TMPC
1131     test_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
1132     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
1133 }
1134
1135 check_insn(){
1136     log check_insn "$@"
1137     check_inline_asm ${1}_inline "\"$2\""
1138     check_as ${1}_external "$2"
1139 }
1140
1141 check_x86asm(){
1142     log check_x86asm "$@"
1143     name=$1
1144     shift
1145     disable $name
1146     test_x86asm "$@" && enable $name
1147 }
1148
1149 test_ld(){
1150     log test_ld "$@"
1151     type=$1
1152     shift 1
1153     flags=$(filter_out '-l*|*.so' $@)
1154     libs=$(filter '-l*|*.so' $@)
1155     test_$type $($cflags_filter $flags) || return
1156     flags=$($ldflags_filter $flags)
1157     libs=$($ldflags_filter $libs)
1158     test_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
1159 }
1160
1161 check_ld(){
1162     log check_ld "$@"
1163     type=$1
1164     name=$2
1165     shift 2
1166     disable $name
1167     test_ld $type $@ && enable $name
1168 }
1169
1170 print_include(){
1171     hdr=$1
1172     test "${hdr%.h}" = "${hdr}" &&
1173         echo "#include $hdr"    ||
1174         echo "#include <$hdr>"
1175 }
1176
1177 test_code(){
1178     log test_code "$@"
1179     check=$1
1180     headers=$2
1181     code=$3
1182     shift 3
1183     {
1184         for hdr in $headers; do
1185             print_include $hdr
1186         done
1187         echo "int main(void) { $code; return 0; }"
1188     } | test_$check "$@"
1189 }
1190
1191 check_cppflags(){
1192     log check_cppflags "$@"
1193     test_cpp "$@" <<EOF && append CPPFLAGS "$@"
1194 #include <stdlib.h>
1195 EOF
1196 }
1197
1198 test_cflags(){
1199     log test_cflags "$@"
1200     set -- $($cflags_filter "$@")
1201     test_cc "$@" <<EOF
1202 int x;
1203 EOF
1204 }
1205
1206 check_cflags(){
1207     log check_cflags "$@"
1208     test_cflags "$@" && add_cflags "$@"
1209 }
1210
1211 check_cxxflags(){
1212     log check_cxxflags "$@"
1213     set -- $($cflags_filter "$@")
1214     test_cxx "$@" <<EOF && append CXXFLAGS "$@"
1215 int x;
1216 EOF
1217 }
1218
1219 test_objcflags(){
1220     log test_objcflags "$@"
1221     set -- $($objcflags_filter "$@")
1222     test_objcc "$@" <<EOF
1223 int x;
1224 EOF
1225 }
1226
1227 check_objcflags(){
1228     log check_objcflags "$@"
1229     test_objcflags "$@" && add_objcflags "$@"
1230 }
1231
1232 test_ldflags(){
1233     log test_ldflags "$@"
1234     set -- $($ldflags_filter "$@")
1235     test_ld "cc" "$@" <<EOF
1236 int main(void){ return 0; }
1237 EOF
1238 }
1239
1240 check_ldflags(){
1241     log check_ldflags "$@"
1242     test_ldflags "$@" && add_ldflags "$@"
1243 }
1244
1245 test_stripflags(){
1246     log test_stripflags "$@"
1247     # call test_cc to get a fresh TMPO
1248     test_cc <<EOF
1249 int main(void) { return 0; }
1250 EOF
1251     test_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1252 }
1253
1254 check_stripflags(){
1255     log check_stripflags "$@"
1256     test_stripflags "$@" && add_stripflags "$@"
1257 }
1258
1259 check_headers(){
1260     log check_headers "$@"
1261     headers=$1
1262     shift
1263     disable_sanitized $headers
1264     {
1265         for hdr in $headers; do
1266             print_include $hdr
1267         done
1268         echo "int x;"
1269     } | test_cpp "$@" && enable_sanitized $headers
1270 }
1271
1272 check_header_objcc(){
1273     log check_header_objcc "$@"
1274     rm -f -- "$TMPO"
1275     header=$1
1276     shift
1277     disable_sanitized $header
1278     {
1279        echo "#include <$header>"
1280        echo "int main(void) { return 0; }"
1281     } | test_objcc && test_stat "$TMPO" && enable_sanitized $header
1282 }
1283
1284 check_apple_framework(){
1285     log check_apple_framework "$@"
1286     framework="$1"
1287     name="$(tolower $framework)"
1288     header="${framework}/${framework}.h"
1289     disable $name
1290     check_header_objcc $header &&
1291         enable $name && eval ${name}_extralibs='"-framework $framework"'
1292 }
1293
1294 check_func(){
1295     log check_func "$@"
1296     func=$1
1297     shift
1298     disable $func
1299     test_ld "cc" "$@" <<EOF && enable $func
1300 extern int $func();
1301 int main(void){ $func(); }
1302 EOF
1303 }
1304
1305 check_complexfunc(){
1306     log check_complexfunc "$@"
1307     func=$1
1308     narg=$2
1309     shift 2
1310     test $narg = 2 && args="f, g" || args="f * I"
1311     disable $func
1312     test_ld "cc" "$@" <<EOF && enable $func
1313 #include <complex.h>
1314 #include <math.h>
1315 float foo(complex float f, complex float g) { return $func($args); }
1316 int main(void){ return (int) foo; }
1317 EOF
1318 }
1319
1320 check_mathfunc(){
1321     log check_mathfunc "$@"
1322     func=$1
1323     narg=$2
1324     shift 2
1325     test $narg = 2 && args="f, g" || args="f"
1326     disable $func
1327     test_ld "cc" "$@" <<EOF && enable $func
1328 #include <math.h>
1329 float foo(float f, float g) { return $func($args); }
1330 int main(void){ return (int) foo; }
1331 EOF
1332 }
1333
1334 check_func_headers(){
1335     log check_func_headers "$@"
1336     headers=$1
1337     funcs=$2
1338     shift 2
1339     {
1340         for hdr in $headers; do
1341             print_include $hdr
1342         done
1343         echo "#include <stdint.h>"
1344         for func in $funcs; do
1345             echo "long check_$func(void) { return (long) $func; }"
1346         done
1347         echo "int main(void) { int ret = 0;"
1348         # LTO could optimize out the test functions without this
1349         for func in $funcs; do
1350             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1351         done
1352         echo "return ret; }"
1353     } | test_ld "cc" "$@" && enable $funcs && enable_sanitized $headers
1354 }
1355
1356 check_class_headers_cpp(){
1357     log check_class_headers_cpp "$@"
1358     headers=$1
1359     classes=$2
1360     shift 2
1361     {
1362         for hdr in $headers; do
1363             echo "#include <$hdr>"
1364         done
1365         echo "int main(void) { "
1366         i=1
1367         for class in $classes; do
1368             echo "$class obj$i;"
1369             i=$(expr $i + 1)
1370         done
1371         echo "return 0; }"
1372     } | test_ld "cxx" "$@" && enable $funcs && enable_sanitized $headers
1373 }
1374
1375 test_cpp_condition(){
1376     log test_cpp_condition "$@"
1377     header=$1
1378     condition=$2
1379     shift 2
1380     test_cpp "$@" <<EOF
1381 #include <$header>
1382 #if !($condition)
1383 #error "unsatisfied condition: $condition"
1384 #endif
1385 EOF
1386 }
1387
1388 check_cpp_condition(){
1389     log check_cpp_condition "$@"
1390     name=$1
1391     shift 1
1392     disable $name
1393     test_cpp_condition "$@" && enable $name
1394 }
1395
1396 test_cflags_cc(){
1397     log test_cflags_cc "$@"
1398     flags=$1
1399     header=$2
1400     condition=$3
1401     shift 3
1402     set -- $($cflags_filter "$flags")
1403     test_cc "$@" <<EOF
1404 #include <$header>
1405 #if !($condition)
1406 #error "unsatisfied condition: $condition"
1407 #endif
1408 EOF
1409 }
1410
1411 check_lib(){
1412     log check_lib "$@"
1413     name="$1"
1414     headers="$2"
1415     funcs="$3"
1416     shift 3
1417     disable $name
1418     check_func_headers "$headers" "$funcs" "$@" &&
1419         enable $name && eval ${name}_extralibs="\$@"
1420 }
1421
1422 check_lib_cpp(){
1423     log check_lib_cpp "$@"
1424     name="$1"
1425     headers="$2"
1426     classes="$3"
1427     shift 3
1428     disable $name
1429     check_class_headers_cpp "$headers" "$classes" "$@" &&
1430         enable $name && eval ${name}_extralibs="\$@"
1431 }
1432
1433 test_pkg_config(){
1434     log test_pkg_config "$@"
1435     name="$1"
1436     pkg_version="$2"
1437     pkg="${2%% *}"
1438     headers="$3"
1439     funcs="$4"
1440     shift 4
1441     disable $name
1442     test_cmd $pkg_config --exists --print-errors $pkg_version || return
1443     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1444     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1445     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1446         enable $name &&
1447         set_sanitized "${name}_cflags"    $pkg_cflags &&
1448         set_sanitized "${name}_extralibs" $pkg_libs
1449 }
1450
1451 check_pkg_config(){
1452     log check_pkg_config "$@"
1453     name="$1"
1454     test_pkg_config "$@" &&
1455         eval add_cflags \$${name}_cflags
1456 }
1457
1458 test_exec(){
1459     test_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1460 }
1461
1462 check_exec_crash(){
1463     log check_exec_crash "$@"
1464     code=$(cat)
1465
1466     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1467     # are safe but may not be available everywhere.  Thus we use
1468     # raise(SIGTERM) instead.  The check is run in a subshell so we
1469     # can redirect the "Terminated" message from the shell.  SIGBUS
1470     # is not defined by standard C so it is used conditionally.
1471
1472     (test_exec "$@") >> $logfile 2>&1 <<EOF
1473 #include <signal.h>
1474 static void sighandler(int sig){
1475     raise(SIGTERM);
1476 }
1477 int foo(void){
1478     $code
1479 }
1480 int (*func_ptr)(void) = foo;
1481 int main(void){
1482     signal(SIGILL, sighandler);
1483     signal(SIGFPE, sighandler);
1484     signal(SIGSEGV, sighandler);
1485 #ifdef SIGBUS
1486     signal(SIGBUS, sighandler);
1487 #endif
1488     return func_ptr();
1489 }
1490 EOF
1491 }
1492
1493 check_type(){
1494     log check_type "$@"
1495     headers=$1
1496     type=$2
1497     shift 2
1498     disable_sanitized "$type"
1499     test_code cc "$headers" "$type v" "$@" && enable_sanitized "$type"
1500 }
1501
1502 check_struct(){
1503     log check_struct "$@"
1504     headers=$1
1505     struct=$2
1506     member=$3
1507     shift 3
1508     disable_sanitized "${struct}_${member}"
1509     test_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1510         enable_sanitized "${struct}_${member}"
1511 }
1512
1513 check_builtin(){
1514     log check_builtin "$@"
1515     name=$1
1516     headers=$2
1517     builtin=$3
1518     shift 3
1519     disable "$name"
1520     test_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1521 }
1522
1523 check_compile_assert(){
1524     log check_compile_assert "$@"
1525     name=$1
1526     headers=$2
1527     condition=$3
1528     shift 3
1529     disable "$name"
1530     test_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1531 }
1532
1533 check_cc(){
1534     log check_cc "$@"
1535     name=$1
1536     shift
1537     disable "$name"
1538     test_code cc "$@" && enable "$name"
1539 }
1540
1541 require(){
1542     log require "$@"
1543     name_version="$1"
1544     name="${1%% *}"
1545     shift
1546     check_lib $name "$@" || die "ERROR: $name_version not found"
1547 }
1548
1549 require_cc(){
1550     log require_cc "$@"
1551     name="$1"
1552     check_cc "$@" || die "ERROR: $name failed"
1553 }
1554
1555 require_cpp(){
1556     log require_cpp "$@"
1557     name_version="$1"
1558     name="${1%% *}"
1559     shift
1560     check_lib_cpp "$name" "$@" || die "ERROR: $name_version not found"
1561 }
1562
1563 require_headers(){
1564     log require_headers "$@"
1565     headers="$1"
1566     check_headers "$@" || die "ERROR: $headers not found"
1567 }
1568
1569 require_cpp_condition(){
1570     log require_cpp_condition "$@"
1571     condition="$3"
1572     check_cpp_condition "$@" || die "ERROR: $condition not satisfied"
1573 }
1574
1575 require_pkg_config(){
1576     log require_pkg_config "$@"
1577     pkg_version="$2"
1578     check_pkg_config "$@" || die "ERROR: $pkg_version not found using pkg-config$pkg_config_fail_message"
1579 }
1580
1581 test_host_cc(){
1582     log test_host_cc "$@"
1583     cat > $TMPC
1584     log_file $TMPC
1585     test_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1586 }
1587
1588 test_host_cpp(){
1589     log test_host_cpp "$@"
1590     cat > $TMPC
1591     log_file $TMPC
1592     test_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1593 }
1594
1595 check_host_cppflags(){
1596     log check_host_cppflags "$@"
1597     test_host_cpp "$@" <<EOF && append host_cppflags "$@"
1598 #include <stdlib.h>
1599 EOF
1600 }
1601
1602 check_host_cflags(){
1603     log check_host_cflags "$@"
1604     set -- $($host_cflags_filter "$@")
1605     test_host_cc "$@" <<EOF && append host_cflags "$@"
1606 int x;
1607 EOF
1608 }
1609
1610 test_host_cpp_condition(){
1611     log test_host_cpp_condition "$@"
1612     header=$1
1613     condition=$2
1614     shift 2
1615     test_host_cpp "$@" <<EOF
1616 #include <$header>
1617 #if !($condition)
1618 #error "unsatisfied condition: $condition"
1619 #endif
1620 EOF
1621 }
1622
1623 check_host_cpp_condition(){
1624     log check_host_cpp_condition "$@"
1625     name=$1
1626     shift 1
1627     disable $name
1628     test_host_cpp_condition "$@" && enable $name
1629 }
1630
1631 cp_if_changed(){
1632     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1633     mkdir -p "$(dirname $2)"
1634     cp -f "$1" "$2"
1635 }
1636
1637 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1638 # system-dependent things.
1639
1640 AVCODEC_COMPONENTS="
1641     bsfs
1642     decoders
1643     encoders
1644     hwaccels
1645     parsers
1646 "
1647
1648 AVDEVICE_COMPONENTS="
1649     indevs
1650     outdevs
1651 "
1652
1653 AVFILTER_COMPONENTS="
1654     filters
1655 "
1656
1657 AVFORMAT_COMPONENTS="
1658     demuxers
1659     muxers
1660     protocols
1661 "
1662
1663 COMPONENT_LIST="
1664     $AVCODEC_COMPONENTS
1665     $AVDEVICE_COMPONENTS
1666     $AVFILTER_COMPONENTS
1667     $AVFORMAT_COMPONENTS
1668 "
1669
1670 EXAMPLE_LIST="
1671     avio_list_dir_example
1672     avio_reading_example
1673     decode_audio_example
1674     decode_video_example
1675     demuxing_decoding_example
1676     encode_audio_example
1677     encode_video_example
1678     extract_mvs_example
1679     filter_audio_example
1680     filtering_audio_example
1681     filtering_video_example
1682     http_multiclient_example
1683     hw_decode_example
1684     metadata_example
1685     muxing_example
1686     qsvdec_example
1687     remuxing_example
1688     resampling_audio_example
1689     scaling_video_example
1690     transcode_aac_example
1691     transcoding_example
1692     vaapi_encode_example
1693     vaapi_transcode_example
1694 "
1695
1696 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1697     alsa
1698     appkit
1699     avfoundation
1700     bzlib
1701     coreimage
1702     iconv
1703     libxcb
1704     libxcb_shm
1705     libxcb_shape
1706     libxcb_xfixes
1707     lzma
1708     mediafoundation
1709     schannel
1710     sdl2
1711     securetransport
1712     sndio
1713     xlib
1714     zlib
1715 "
1716
1717 EXTERNAL_LIBRARY_GPL_LIST="
1718     avisynth
1719     frei0r
1720     libcdio
1721     libdavs2
1722     librubberband
1723     libvidstab
1724     libx264
1725     libx265
1726     libxavs
1727     libxavs2
1728     libxvid
1729 "
1730
1731 EXTERNAL_LIBRARY_NONFREE_LIST="
1732     decklink
1733     libfdk_aac
1734     openssl
1735     libtls
1736 "
1737
1738 EXTERNAL_LIBRARY_VERSION3_LIST="
1739     gmp
1740     libaribb24
1741     liblensfun
1742     libopencore_amrnb
1743     libopencore_amrwb
1744     libvmaf
1745     libvo_amrwbenc
1746     mbedtls
1747     rkmpp
1748 "
1749
1750 EXTERNAL_LIBRARY_GPLV3_LIST="
1751     libsmbclient
1752 "
1753
1754 EXTERNAL_LIBRARY_LIST="
1755     $EXTERNAL_LIBRARY_GPL_LIST
1756     $EXTERNAL_LIBRARY_NONFREE_LIST
1757     $EXTERNAL_LIBRARY_VERSION3_LIST
1758     $EXTERNAL_LIBRARY_GPLV3_LIST
1759     chromaprint
1760     gcrypt
1761     gnutls
1762     jni
1763     ladspa
1764     libaom
1765     libass
1766     libbluray
1767     libbs2b
1768     libcaca
1769     libcelt
1770     libcodec2
1771     libdav1d
1772     libdc1394
1773     libdrm
1774     libflite
1775     libfontconfig
1776     libfreetype
1777     libfribidi
1778     libglslang
1779     libgme
1780     libgsm
1781     libiec61883
1782     libilbc
1783     libjack
1784     libklvanc
1785     libkvazaar
1786     libmodplug
1787     libmp3lame
1788     libmysofa
1789     libopencv
1790     libopenh264
1791     libopenjpeg
1792     libopenmpt
1793     libopus
1794     libpulse
1795     librabbitmq
1796     librav1e
1797     librsvg
1798     librtmp
1799     libshine
1800     libsmbclient
1801     libsnappy
1802     libsoxr
1803     libspeex
1804     libsrt
1805     libssh
1806     libtensorflow
1807     libtesseract
1808     libtheora
1809     libtwolame
1810     libv4l2
1811     libvorbis
1812     libvpx
1813     libwavpack
1814     libwebp
1815     libxml2
1816     libzimg
1817     libzmq
1818     libzvbi
1819     lv2
1820     mediacodec
1821     openal
1822     opengl
1823     pocketsphinx
1824     vapoursynth
1825 "
1826
1827 HWACCEL_AUTODETECT_LIBRARY_LIST="
1828     amf
1829     audiotoolbox
1830     crystalhd
1831     cuda
1832     cuda_llvm
1833     cuvid
1834     d3d11va
1835     dxva2
1836     ffnvcodec
1837     nvdec
1838     nvenc
1839     vaapi
1840     vdpau
1841     videotoolbox
1842     v4l2_m2m
1843     xvmc
1844 "
1845
1846 # catchall list of things that require external libs to link
1847 EXTRALIBS_LIST="
1848     cpu_init
1849     cws2fws
1850 "
1851
1852 HWACCEL_LIBRARY_NONFREE_LIST="
1853     cuda_nvcc
1854     cuda_sdk
1855     libnpp
1856 "
1857
1858 HWACCEL_LIBRARY_LIST="
1859     $HWACCEL_LIBRARY_NONFREE_LIST
1860     libmfx
1861     mmal
1862     omx
1863     opencl
1864     vulkan
1865 "
1866
1867 DOCUMENT_LIST="
1868     doc
1869     htmlpages
1870     manpages
1871     podpages
1872     txtpages
1873 "
1874
1875 FEATURE_LIST="
1876     ftrapv
1877     gray
1878     hardcoded_tables
1879     omx_rpi
1880     runtime_cpudetect
1881     safe_bitstream_reader
1882     shared
1883     small
1884     static
1885     swscale_alpha
1886 "
1887
1888 # this list should be kept in linking order
1889 LIBRARY_LIST="
1890     avdevice
1891     avfilter
1892     swscale
1893     postproc
1894     avformat
1895     avcodec
1896     swresample
1897     avresample
1898     avutil
1899 "
1900
1901 LICENSE_LIST="
1902     gpl
1903     nonfree
1904     version3
1905 "
1906
1907 PROGRAM_LIST="
1908     ffplay
1909     ffprobe
1910     ffmpeg
1911 "
1912
1913 SUBSYSTEM_LIST="
1914     dct
1915     dwt
1916     error_resilience
1917     faan
1918     fast_unaligned
1919     fft
1920     lsp
1921     lzo
1922     mdct
1923     pixelutils
1924     network
1925     rdft
1926 "
1927
1928 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1929 CONFIG_LIST="
1930     $DOCUMENT_LIST
1931     $EXAMPLE_LIST
1932     $EXTERNAL_LIBRARY_LIST
1933     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1934     $HWACCEL_LIBRARY_LIST
1935     $HWACCEL_AUTODETECT_LIBRARY_LIST
1936     $FEATURE_LIST
1937     $LICENSE_LIST
1938     $LIBRARY_LIST
1939     $PROGRAM_LIST
1940     $SUBSYSTEM_LIST
1941     autodetect
1942     fontconfig
1943     large_tests
1944     linux_perf
1945     memory_poisoning
1946     neon_clobber_test
1947     ossfuzz
1948     pic
1949     thumb
1950     valgrind_backtrace
1951     xmm_clobber_test
1952     $COMPONENT_LIST
1953 "
1954
1955 THREADS_LIST="
1956     pthreads
1957     os2threads
1958     w32threads
1959 "
1960
1961 ATOMICS_LIST="
1962     atomics_gcc
1963     atomics_suncc
1964     atomics_win32
1965 "
1966
1967 AUTODETECT_LIBS="
1968     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1969     $HWACCEL_AUTODETECT_LIBRARY_LIST
1970     $THREADS_LIST
1971 "
1972
1973 ARCH_LIST="
1974     aarch64
1975     alpha
1976     arm
1977     avr32
1978     avr32_ap
1979     avr32_uc
1980     bfin
1981     ia64
1982     m68k
1983     mips
1984     mips64
1985     parisc
1986     ppc
1987     ppc64
1988     s390
1989     sh4
1990     sparc
1991     sparc64
1992     tilegx
1993     tilepro
1994     tomi
1995     x86
1996     x86_32
1997     x86_64
1998 "
1999
2000 ARCH_EXT_LIST_ARM="
2001     armv5te
2002     armv6
2003     armv6t2
2004     armv8
2005     neon
2006     vfp
2007     vfpv3
2008     setend
2009 "
2010
2011 ARCH_EXT_LIST_MIPS="
2012     mipsfpu
2013     mips32r2
2014     mips32r5
2015     mips64r2
2016     mips32r6
2017     mips64r6
2018     mipsdsp
2019     mipsdspr2
2020     msa
2021     msa2
2022 "
2023
2024 ARCH_EXT_LIST_LOONGSON="
2025     loongson2
2026     loongson3
2027     mmi
2028 "
2029
2030 ARCH_EXT_LIST_X86_SIMD="
2031     aesni
2032     amd3dnow
2033     amd3dnowext
2034     avx
2035     avx2
2036     avx512
2037     fma3
2038     fma4
2039     mmx
2040     mmxext
2041     sse
2042     sse2
2043     sse3
2044     sse4
2045     sse42
2046     ssse3
2047     xop
2048 "
2049
2050 ARCH_EXT_LIST_PPC="
2051     altivec
2052     dcbzl
2053     ldbrx
2054     power8
2055     ppc4xx
2056     vsx
2057 "
2058
2059 ARCH_EXT_LIST_X86="
2060     $ARCH_EXT_LIST_X86_SIMD
2061     cpunop
2062     i686
2063 "
2064
2065 ARCH_EXT_LIST="
2066     $ARCH_EXT_LIST_ARM
2067     $ARCH_EXT_LIST_PPC
2068     $ARCH_EXT_LIST_X86
2069     $ARCH_EXT_LIST_MIPS
2070     $ARCH_EXT_LIST_LOONGSON
2071 "
2072
2073 ARCH_FEATURES="
2074     aligned_stack
2075     fast_64bit
2076     fast_clz
2077     fast_cmov
2078     local_aligned
2079     simd_align_16
2080     simd_align_32
2081     simd_align_64
2082 "
2083
2084 BUILTIN_LIST="
2085     atomic_cas_ptr
2086     machine_rw_barrier
2087     MemoryBarrier
2088     mm_empty
2089     rdtsc
2090     sem_timedwait
2091     sync_val_compare_and_swap
2092 "
2093 HAVE_LIST_CMDLINE="
2094     inline_asm
2095     symver
2096     x86asm
2097 "
2098
2099 HAVE_LIST_PUB="
2100     bigendian
2101     fast_unaligned
2102 "
2103
2104 HEADERS_LIST="
2105     arpa_inet_h
2106     asm_types_h
2107     cdio_paranoia_h
2108     cdio_paranoia_paranoia_h
2109     cuda_h
2110     dispatch_dispatch_h
2111     dev_bktr_ioctl_bt848_h
2112     dev_bktr_ioctl_meteor_h
2113     dev_ic_bt8xx_h
2114     dev_video_bktr_ioctl_bt848_h
2115     dev_video_meteor_ioctl_meteor_h
2116     direct_h
2117     dirent_h
2118     dxgidebug_h
2119     dxva_h
2120     ES2_gl_h
2121     gsm_h
2122     io_h
2123     linux_perf_event_h
2124     machine_ioctl_bt848_h
2125     machine_ioctl_meteor_h
2126     malloc_h
2127     opencv2_core_core_c_h
2128     OpenGL_gl3_h
2129     poll_h
2130     sys_param_h
2131     sys_resource_h
2132     sys_select_h
2133     sys_soundcard_h
2134     sys_time_h
2135     sys_un_h
2136     sys_videoio_h
2137     termios_h
2138     udplite_h
2139     unistd_h
2140     valgrind_valgrind_h
2141     windows_h
2142     winsock2_h
2143 "
2144
2145 INTRINSICS_LIST="
2146     intrinsics_neon
2147 "
2148
2149 COMPLEX_FUNCS="
2150     cabs
2151     cexp
2152 "
2153
2154 MATH_FUNCS="
2155     atanf
2156     atan2f
2157     cbrt
2158     cbrtf
2159     copysign
2160     cosf
2161     erf
2162     exp2
2163     exp2f
2164     expf
2165     hypot
2166     isfinite
2167     isinf
2168     isnan
2169     ldexpf
2170     llrint
2171     llrintf
2172     log2
2173     log2f
2174     log10f
2175     lrint
2176     lrintf
2177     powf
2178     rint
2179     round
2180     roundf
2181     sinf
2182     trunc
2183     truncf
2184 "
2185
2186 SYSTEM_FEATURES="
2187     dos_paths
2188     libc_msvcrt
2189     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2190     section_data_rel_ro
2191     threads
2192     uwp
2193     winrt
2194 "
2195
2196 SYSTEM_FUNCS="
2197     access
2198     aligned_malloc
2199     arc4random
2200     clock_gettime
2201     closesocket
2202     CommandLineToArgvW
2203     fcntl
2204     getaddrinfo
2205     gethrtime
2206     getopt
2207     GetModuleHandle
2208     GetProcessAffinityMask
2209     GetProcessMemoryInfo
2210     GetProcessTimes
2211     getrusage
2212     GetStdHandle
2213     GetSystemTimeAsFileTime
2214     gettimeofday
2215     glob
2216     glXGetProcAddress
2217     gmtime_r
2218     inet_aton
2219     isatty
2220     kbhit
2221     localtime_r
2222     lstat
2223     lzo1x_999_compress
2224     mach_absolute_time
2225     MapViewOfFile
2226     memalign
2227     mkstemp
2228     mmap
2229     mprotect
2230     nanosleep
2231     PeekNamedPipe
2232     posix_memalign
2233     pthread_cancel
2234     sched_getaffinity
2235     SecItemImport
2236     SetConsoleTextAttribute
2237     SetConsoleCtrlHandler
2238     SetDllDirectory
2239     setmode
2240     setrlimit
2241     Sleep
2242     strerror_r
2243     sysconf
2244     sysctl
2245     usleep
2246     UTGetOSTypeFromString
2247     VirtualAlloc
2248     wglGetProcAddress
2249 "
2250
2251 SYSTEM_LIBRARIES="
2252     bcrypt
2253     vaapi_drm
2254     vaapi_x11
2255     vdpau_x11
2256 "
2257
2258 TOOLCHAIN_FEATURES="
2259     as_arch_directive
2260     as_dn_directive
2261     as_fpu_directive
2262     as_func
2263     as_object_arch
2264     asm_mod_q
2265     blocks_extension
2266     ebp_available
2267     ebx_available
2268     gnu_as
2269     gnu_windres
2270     ibm_asm
2271     inline_asm_direct_symbol_refs
2272     inline_asm_labels
2273     inline_asm_nonlocal_labels
2274     pragma_deprecated
2275     rsync_contimeout
2276     symver_asm_label
2277     symver_gnu_asm
2278     vfp_args
2279     xform_asm
2280     xmm_clobbers
2281 "
2282
2283 TYPES_LIST="
2284     kCMVideoCodecType_HEVC
2285     kCVPixelFormatType_420YpCbCr10BiPlanarVideoRange
2286     kCVImageBufferTransferFunction_SMPTE_ST_2084_PQ
2287     kCVImageBufferTransferFunction_ITU_R_2100_HLG
2288     kCVImageBufferTransferFunction_Linear
2289     socklen_t
2290     struct_addrinfo
2291     struct_group_source_req
2292     struct_ip_mreq_source
2293     struct_ipv6_mreq
2294     struct_msghdr_msg_flags
2295     struct_pollfd
2296     struct_rusage_ru_maxrss
2297     struct_sctp_event_subscribe
2298     struct_sockaddr_in6
2299     struct_sockaddr_sa_len
2300     struct_sockaddr_storage
2301     struct_stat_st_mtim_tv_nsec
2302     struct_v4l2_frmivalenum_discrete
2303 "
2304
2305 HAVE_LIST="
2306     $ARCH_EXT_LIST
2307     $(add_suffix _external $ARCH_EXT_LIST)
2308     $(add_suffix _inline   $ARCH_EXT_LIST)
2309     $ARCH_FEATURES
2310     $BUILTIN_LIST
2311     $COMPLEX_FUNCS
2312     $HAVE_LIST_CMDLINE
2313     $HAVE_LIST_PUB
2314     $HEADERS_LIST
2315     $INTRINSICS_LIST
2316     $MATH_FUNCS
2317     $SYSTEM_FEATURES
2318     $SYSTEM_FUNCS
2319     $SYSTEM_LIBRARIES
2320     $THREADS_LIST
2321     $TOOLCHAIN_FEATURES
2322     $TYPES_LIST
2323     makeinfo
2324     makeinfo_html
2325     opencl_d3d11
2326     opencl_drm_arm
2327     opencl_drm_beignet
2328     opencl_dxva2
2329     opencl_vaapi_beignet
2330     opencl_vaapi_intel_media
2331     perl
2332     pod2man
2333     texi2html
2334 "
2335
2336 # options emitted with CONFIG_ prefix but not available on the command line
2337 CONFIG_EXTRA="
2338     aandcttables
2339     ac3dsp
2340     adts_header
2341     audio_frame_queue
2342     audiodsp
2343     blockdsp
2344     bswapdsp
2345     cabac
2346     cbs
2347     cbs_av1
2348     cbs_h264
2349     cbs_h265
2350     cbs_jpeg
2351     cbs_mpeg2
2352     cbs_vp9
2353     dirac_parse
2354     dnn
2355     dvprofile
2356     exif
2357     faandct
2358     faanidct
2359     fdctdsp
2360     flacdsp
2361     fmtconvert
2362     frame_thread_encoder
2363     g722dsp
2364     golomb
2365     gplv3
2366     h263dsp
2367     h264chroma
2368     h264dsp
2369     h264parse
2370     h264pred
2371     h264qpel
2372     hevcparse
2373     hpeldsp
2374     huffman
2375     huffyuvdsp
2376     huffyuvencdsp
2377     idctdsp
2378     iirfilter
2379     mdct15
2380     intrax8
2381     iso_media
2382     ividsp
2383     jpegtables
2384     lgplv3
2385     libx262
2386     llauddsp
2387     llviddsp
2388     llvidencdsp
2389     lpc
2390     lzf
2391     me_cmp
2392     mpeg_er
2393     mpegaudio
2394     mpegaudiodsp
2395     mpegaudioheader
2396     mpegvideo
2397     mpegvideoenc
2398     mss34dsp
2399     pixblockdsp
2400     qpeldsp
2401     qsv
2402     qsvdec
2403     qsvenc
2404     qsvvpp
2405     rangecoder
2406     riffdec
2407     riffenc
2408     rtpdec
2409     rtpenc_chain
2410     rv34dsp
2411     scene_sad
2412     sinewin
2413     snappy
2414     srtp
2415     startcode
2416     texturedsp
2417     texturedspenc
2418     tpeldsp
2419     vaapi_1
2420     vaapi_encode
2421     vc1dsp
2422     videodsp
2423     vp3dsp
2424     vp56dsp
2425     vp8dsp
2426     wma_freqs
2427     wmv2dsp
2428 "
2429
2430 CMDLINE_SELECT="
2431     $ARCH_EXT_LIST
2432     $CONFIG_LIST
2433     $HAVE_LIST_CMDLINE
2434     $THREADS_LIST
2435     asm
2436     cross_compile
2437     debug
2438     extra_warnings
2439     logging
2440     lto
2441     optimizations
2442     rpath
2443     stripping
2444 "
2445
2446 PATHS_LIST="
2447     bindir
2448     datadir
2449     docdir
2450     incdir
2451     libdir
2452     mandir
2453     pkgconfigdir
2454     prefix
2455     shlibdir
2456     install_name_dir
2457 "
2458
2459 CMDLINE_SET="
2460     $PATHS_LIST
2461     ar
2462     arch
2463     as
2464     assert_level
2465     build_suffix
2466     cc
2467     objcc
2468     cpu
2469     cross_prefix
2470     custom_allocator
2471     cxx
2472     dep_cc
2473     doxygen
2474     env
2475     extra_version
2476     gas
2477     host_cc
2478     host_cflags
2479     host_extralibs
2480     host_ld
2481     host_ldflags
2482     host_os
2483     ignore_tests
2484     install
2485     ld
2486     ln_s
2487     logfile
2488     malloc_prefix
2489     nm
2490     optflags
2491     nvcc
2492     nvccflags
2493     pkg_config
2494     pkg_config_flags
2495     progs_suffix
2496     random_seed
2497     ranlib
2498     samples
2499     strip
2500     sws_max_filter_size
2501     sysinclude
2502     sysroot
2503     target_exec
2504     target_os
2505     target_path
2506     target_samples
2507     tempprefix
2508     toolchain
2509     valgrind
2510     windres
2511     x86asmexe
2512 "
2513
2514 CMDLINE_APPEND="
2515     extra_cflags
2516     extra_cxxflags
2517     extra_objcflags
2518     host_cppflags
2519 "
2520
2521 # code dependency declarations
2522
2523 # architecture extensions
2524
2525 armv5te_deps="arm"
2526 armv6_deps="arm"
2527 armv6t2_deps="arm"
2528 armv8_deps="aarch64"
2529 neon_deps_any="aarch64 arm"
2530 intrinsics_neon_deps="neon"
2531 vfp_deps_any="aarch64 arm"
2532 vfpv3_deps="vfp"
2533 setend_deps="arm"
2534
2535 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2536
2537 altivec_deps="ppc"
2538 dcbzl_deps="ppc"
2539 ldbrx_deps="ppc"
2540 ppc4xx_deps="ppc"
2541 vsx_deps="altivec"
2542 power8_deps="vsx"
2543
2544 loongson2_deps="mips"
2545 loongson3_deps="mips"
2546 mips32r2_deps="mips"
2547 mips32r5_deps="mips"
2548 mips32r6_deps="mips"
2549 mips64r2_deps="mips"
2550 mips64r6_deps="mips"
2551 mipsfpu_deps="mips"
2552 mipsdsp_deps="mips"
2553 mipsdspr2_deps="mips"
2554 mmi_deps="mips"
2555 msa_deps="mipsfpu"
2556 msa2_deps="msa"
2557
2558 cpunop_deps="i686"
2559 x86_64_select="i686"
2560 x86_64_suggest="fast_cmov"
2561
2562 amd3dnow_deps="mmx"
2563 amd3dnowext_deps="amd3dnow"
2564 i686_deps="x86"
2565 mmx_deps="x86"
2566 mmxext_deps="mmx"
2567 sse_deps="mmxext"
2568 sse2_deps="sse"
2569 sse3_deps="sse2"
2570 ssse3_deps="sse3"
2571 sse4_deps="ssse3"
2572 sse42_deps="sse4"
2573 aesni_deps="sse42"
2574 avx_deps="sse42"
2575 xop_deps="avx"
2576 fma3_deps="avx"
2577 fma4_deps="avx"
2578 avx2_deps="avx"
2579 avx512_deps="avx2"
2580
2581 mmx_external_deps="x86asm"
2582 mmx_inline_deps="inline_asm x86"
2583 mmx_suggest="mmx_external mmx_inline"
2584
2585 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2586     eval dep=\$${ext}_deps
2587     eval ${ext}_external_deps='"${dep}_external"'
2588     eval ${ext}_inline_deps='"${dep}_inline"'
2589     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2590 done
2591
2592 aligned_stack_if_any="aarch64 ppc x86"
2593 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2594 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2595 fast_unaligned_if_any="aarch64 ppc x86"
2596 simd_align_16_if_any="altivec neon sse"
2597 simd_align_32_if_any="avx"
2598 simd_align_64_if_any="avx512"
2599
2600 # system capabilities
2601 linux_perf_deps="linux_perf_event_h"
2602 symver_if_any="symver_asm_label symver_gnu_asm"
2603 valgrind_backtrace_conflict="optimizations"
2604 valgrind_backtrace_deps="valgrind_valgrind_h"
2605
2606 # threading support
2607 atomics_gcc_if="sync_val_compare_and_swap"
2608 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2609 atomics_win32_if="MemoryBarrier"
2610 atomics_native_if_any="$ATOMICS_LIST"
2611 w32threads_deps="atomics_native"
2612 threads_if_any="$THREADS_LIST"
2613
2614 # subsystems
2615 cbs_av1_select="cbs"
2616 cbs_h264_select="cbs"
2617 cbs_h265_select="cbs"
2618 cbs_jpeg_select="cbs"
2619 cbs_mpeg2_select="cbs"
2620 cbs_vp9_select="cbs"
2621 dct_select="rdft"
2622 dirac_parse_select="golomb"
2623 dnn_suggest="libtensorflow"
2624 error_resilience_select="me_cmp"
2625 faandct_deps="faan"
2626 faandct_select="fdctdsp"
2627 faanidct_deps="faan"
2628 faanidct_select="idctdsp"
2629 h264dsp_select="startcode"
2630 hevcparse_select="golomb"
2631 frame_thread_encoder_deps="encoders threads"
2632 intrax8_select="blockdsp idctdsp"
2633 mdct_select="fft"
2634 mdct15_select="fft"
2635 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2636 mpeg_er_select="error_resilience"
2637 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2638 mpegaudiodsp_select="dct"
2639 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2640 mpegvideoenc_select="aandcttables me_cmp mpegvideo pixblockdsp qpeldsp"
2641 vc1dsp_select="h264chroma qpeldsp startcode"
2642 rdft_select="fft"
2643
2644 # decoders / encoders
2645 aac_decoder_select="adts_header mdct15 mdct sinewin"
2646 aac_fixed_decoder_select="adts_header mdct sinewin"
2647 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2648 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2649 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2650 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2651 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2652 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2653 acelp_kelvin_decoder_select="audiodsp"
2654 adpcm_g722_decoder_select="g722dsp"
2655 adpcm_g722_encoder_select="g722dsp"
2656 aic_decoder_select="golomb idctdsp"
2657 alac_encoder_select="lpc"
2658 als_decoder_select="bswapdsp"
2659 amrnb_decoder_select="lsp"
2660 amrwb_decoder_select="lsp"
2661 amv_decoder_select="sp5x_decoder exif"
2662 amv_encoder_select="jpegtables mpegvideoenc"
2663 ape_decoder_select="bswapdsp llauddsp"
2664 apng_decoder_deps="zlib"
2665 apng_encoder_deps="zlib"
2666 apng_encoder_select="llvidencdsp"
2667 aptx_decoder_select="audio_frame_queue"
2668 aptx_encoder_select="audio_frame_queue"
2669 aptx_hd_decoder_select="audio_frame_queue"
2670 aptx_hd_encoder_select="audio_frame_queue"
2671 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2672 asv1_encoder_select="aandcttables bswapdsp fdctdsp pixblockdsp"
2673 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2674 asv2_encoder_select="aandcttables bswapdsp fdctdsp pixblockdsp"
2675 atrac1_decoder_select="mdct sinewin"
2676 atrac3_decoder_select="mdct"
2677 atrac3al_decoder_select="mdct"
2678 atrac3p_decoder_select="mdct sinewin"
2679 atrac3pal_decoder_select="mdct sinewin"
2680 atrac9_decoder_select="mdct"
2681 avrn_decoder_select="exif jpegtables"
2682 bink_decoder_select="blockdsp hpeldsp"
2683 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2684 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2685 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2686 clearvideo_decoder_select="idctdsp"
2687 cllc_decoder_select="bswapdsp"
2688 comfortnoise_encoder_select="lpc"
2689 cook_decoder_select="audiodsp mdct sinewin"
2690 cscd_decoder_select="lzo"
2691 cscd_decoder_suggest="zlib"
2692 dca_decoder_select="mdct"
2693 dca_encoder_select="mdct"
2694 dds_decoder_select="texturedsp"
2695 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2696 dnxhd_decoder_select="blockdsp idctdsp"
2697 dnxhd_encoder_select="blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2698 dolby_e_decoder_select="mdct"
2699 dvvideo_decoder_select="dvprofile idctdsp"
2700 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2701 dxa_decoder_deps="zlib"
2702 dxv_decoder_select="lzf texturedsp"
2703 eac3_decoder_select="ac3_decoder"
2704 eac3_encoder_select="ac3_encoder"
2705 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2706 eatgq_decoder_select="aandcttables"
2707 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2708 exr_decoder_deps="zlib"
2709 ffv1_decoder_select="rangecoder"
2710 ffv1_encoder_select="rangecoder"
2711 ffvhuff_decoder_select="huffyuv_decoder"
2712 ffvhuff_encoder_select="huffyuv_encoder"
2713 fic_decoder_select="golomb"
2714 flac_decoder_select="flacdsp"
2715 flac_encoder_select="bswapdsp flacdsp lpc"
2716 flashsv2_decoder_deps="zlib"
2717 flashsv2_encoder_deps="zlib"
2718 flashsv_decoder_deps="zlib"
2719 flashsv_encoder_deps="zlib"
2720 flv_decoder_select="h263_decoder"
2721 flv_encoder_select="h263_encoder"
2722 fourxm_decoder_select="blockdsp bswapdsp"
2723 fraps_decoder_select="bswapdsp huffman"
2724 g2m_decoder_deps="zlib"
2725 g2m_decoder_select="blockdsp idctdsp jpegtables"
2726 g729_decoder_select="audiodsp"
2727 h261_decoder_select="mpegvideo"
2728 h261_encoder_select="mpegvideoenc"
2729 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2730 h263_encoder_select="h263dsp mpegvideoenc"
2731 h263i_decoder_select="h263_decoder"
2732 h263p_decoder_select="h263_decoder"
2733 h263p_encoder_select="h263_encoder"
2734 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2735 h264_decoder_suggest="error_resilience"
2736 hap_decoder_select="snappy texturedsp"
2737 hap_encoder_deps="libsnappy"
2738 hap_encoder_select="texturedspenc"
2739 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2740 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2741 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2742 hymt_decoder_select="huffyuv_decoder"
2743 iac_decoder_select="imc_decoder"
2744 imc_decoder_select="bswapdsp fft mdct sinewin"
2745 imm4_decoder_select="bswapdsp"
2746 imm5_decoder_select="h264_decoder hevc_decoder"
2747 indeo3_decoder_select="hpeldsp"
2748 indeo4_decoder_select="ividsp"
2749 indeo5_decoder_select="ividsp"
2750 interplay_video_decoder_select="hpeldsp"
2751 jpegls_decoder_select="mjpeg_decoder"
2752 jv_decoder_select="blockdsp"
2753 lagarith_decoder_select="llviddsp"
2754 ljpeg_encoder_select="idctdsp jpegtables mpegvideoenc"
2755 lscr_decoder_deps="zlib"
2756 magicyuv_decoder_select="llviddsp"
2757 magicyuv_encoder_select="llvidencdsp"
2758 mdec_decoder_select="blockdsp bswapdsp idctdsp mpegvideo"
2759 metasound_decoder_select="lsp mdct sinewin"
2760 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2761 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2762 mjpeg_encoder_select="jpegtables mpegvideoenc"
2763 mjpegb_decoder_select="mjpeg_decoder"
2764 mlp_decoder_select="mlp_parser"
2765 mlp_encoder_select="lpc audio_frame_queue"
2766 motionpixels_decoder_select="bswapdsp"
2767 mp1_decoder_select="mpegaudio"
2768 mp1float_decoder_select="mpegaudio"
2769 mp2_decoder_select="mpegaudio"
2770 mp2float_decoder_select="mpegaudio"
2771 mp3_decoder_select="mpegaudio"
2772 mp3adu_decoder_select="mpegaudio"
2773 mp3adufloat_decoder_select="mpegaudio"
2774 mp3float_decoder_select="mpegaudio"
2775 mp3on4_decoder_select="mpegaudio"
2776 mp3on4float_decoder_select="mpegaudio"
2777 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2778 mpc8_decoder_select="mpegaudiodsp"
2779 mpegvideo_decoder_select="mpegvideo"
2780 mpeg1video_decoder_select="mpegvideo"
2781 mpeg1video_encoder_select="mpegvideoenc h263dsp"
2782 mpeg2video_decoder_select="mpegvideo"
2783 mpeg2video_encoder_select="mpegvideoenc h263dsp"
2784 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2785 mpeg4_encoder_select="h263_encoder"
2786 msa1_decoder_select="mss34dsp"
2787 mscc_decoder_deps="zlib"
2788 msmpeg4v1_decoder_select="h263_decoder"
2789 msmpeg4v2_decoder_select="h263_decoder"
2790 msmpeg4v2_encoder_select="h263_encoder"
2791 msmpeg4v3_decoder_select="h263_decoder"
2792 msmpeg4v3_encoder_select="h263_encoder"
2793 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2794 mts2_decoder_select="mss34dsp"
2795 mv30_decoder_select="aandcttables blockdsp"
2796 mvha_decoder_deps="zlib"
2797 mvha_decoder_select="llviddsp"
2798 mwsc_decoder_deps="zlib"
2799 mxpeg_decoder_select="mjpeg_decoder"
2800 nellymoser_decoder_select="mdct sinewin"
2801 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2802 notchlc_decoder_select="lzf"
2803 nuv_decoder_select="idctdsp lzo"
2804 on2avc_decoder_select="mdct"
2805 opus_decoder_deps="swresample"
2806 opus_decoder_select="mdct15"
2807 opus_encoder_select="audio_frame_queue mdct15"
2808 png_decoder_deps="zlib"
2809 png_encoder_deps="zlib"
2810 png_encoder_select="llvidencdsp"
2811 prores_decoder_select="blockdsp idctdsp"
2812 prores_encoder_select="fdctdsp"
2813 qcelp_decoder_select="lsp"
2814 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2815 ra_144_decoder_select="audiodsp"
2816 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2817 ralf_decoder_select="golomb"
2818 rasc_decoder_deps="zlib"
2819 rawvideo_decoder_select="bswapdsp"
2820 rscc_decoder_deps="zlib"
2821 rtjpeg_decoder_select="me_cmp"
2822 rv10_decoder_select="h263_decoder"
2823 rv10_encoder_select="h263_encoder"
2824 rv20_decoder_select="h263_decoder"
2825 rv20_encoder_select="h263_encoder"
2826 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2827 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2828 screenpresso_decoder_deps="zlib"
2829 shorten_decoder_select="bswapdsp"
2830 sipr_decoder_select="lsp"
2831 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2832 snow_encoder_select="dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2833 sonic_decoder_select="golomb rangecoder"
2834 sonic_encoder_select="golomb rangecoder"
2835 sonic_ls_encoder_select="golomb rangecoder"
2836 sp5x_decoder_select="mjpeg_decoder"
2837 speedhq_decoder_select="mpegvideo"
2838 srgc_decoder_deps="zlib"
2839 svq1_decoder_select="hpeldsp"
2840 svq1_encoder_select="hpeldsp me_cmp mpegvideoenc"
2841 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2842 svq3_decoder_suggest="zlib"
2843 tak_decoder_select="audiodsp"
2844 tdsc_decoder_deps="zlib"
2845 tdsc_decoder_select="mjpeg_decoder"
2846 theora_decoder_select="vp3_decoder"
2847 thp_decoder_select="mjpeg_decoder"
2848 tiff_decoder_select="mjpeg_decoder"
2849 tiff_decoder_suggest="zlib lzma"
2850 tiff_encoder_suggest="zlib"
2851 truehd_decoder_select="mlp_parser"
2852 truehd_encoder_select="lpc audio_frame_queue"
2853 truemotion2_decoder_select="bswapdsp"
2854 truespeech_decoder_select="bswapdsp"
2855 tscc_decoder_deps="zlib"
2856 twinvq_decoder_select="mdct lsp sinewin"
2857 txd_decoder_select="texturedsp"
2858 utvideo_decoder_select="bswapdsp llviddsp"
2859 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2860 vble_decoder_select="llviddsp"
2861 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2862 vc1image_decoder_select="vc1_decoder"
2863 vorbis_decoder_select="mdct"
2864 vorbis_encoder_select="audio_frame_queue mdct"
2865 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2866 vp4_decoder_select="vp3_decoder"
2867 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2868 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2869 vp6a_decoder_select="vp6_decoder"
2870 vp6f_decoder_select="vp6_decoder"
2871 vp7_decoder_select="h264pred videodsp vp8dsp"
2872 vp8_decoder_select="h264pred videodsp vp8dsp"
2873 vp9_decoder_select="videodsp vp9_parser vp9_superframe_split_bsf"
2874 wcmv_decoder_deps="zlib"
2875 webp_decoder_select="vp8_decoder exif"
2876 wmalossless_decoder_select="llauddsp"
2877 wmapro_decoder_select="mdct sinewin wma_freqs"
2878 wmav1_decoder_select="mdct sinewin wma_freqs"
2879 wmav1_encoder_select="mdct sinewin wma_freqs"
2880 wmav2_decoder_select="mdct sinewin wma_freqs"
2881 wmav2_encoder_select="mdct sinewin wma_freqs"
2882 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2883 wmv1_decoder_select="h263_decoder"
2884 wmv1_encoder_select="h263_encoder"
2885 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2886 wmv2_encoder_select="h263_encoder wmv2dsp"
2887 wmv3_decoder_select="vc1_decoder"
2888 wmv3image_decoder_select="wmv3_decoder"
2889 xma1_decoder_select="wmapro_decoder"
2890 xma2_decoder_select="wmapro_decoder"
2891 ylc_decoder_select="bswapdsp"
2892 zerocodec_decoder_deps="zlib"
2893 zlib_decoder_deps="zlib"
2894 zlib_encoder_deps="zlib"
2895 zmbv_decoder_deps="zlib"
2896 zmbv_encoder_deps="zlib"
2897
2898 # hardware accelerators
2899 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2900 cuda_deps="ffnvcodec"
2901 cuvid_deps="ffnvcodec"
2902 d3d11va_deps="dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2903 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32 user32"
2904 ffnvcodec_deps_any="libdl LoadLibrary"
2905 nvdec_deps="ffnvcodec"
2906 vaapi_x11_deps="xlib"
2907 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2908 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2909 xvmc_deps="X11_extensions_XvMClib_h"
2910
2911 h263_vaapi_hwaccel_deps="vaapi"
2912 h263_vaapi_hwaccel_select="h263_decoder"
2913 h263_videotoolbox_hwaccel_deps="videotoolbox"
2914 h263_videotoolbox_hwaccel_select="h263_decoder"
2915 h264_d3d11va_hwaccel_deps="d3d11va"
2916 h264_d3d11va_hwaccel_select="h264_decoder"
2917 h264_d3d11va2_hwaccel_deps="d3d11va"
2918 h264_d3d11va2_hwaccel_select="h264_decoder"
2919 h264_dxva2_hwaccel_deps="dxva2"
2920 h264_dxva2_hwaccel_select="h264_decoder"
2921 h264_nvdec_hwaccel_deps="nvdec"
2922 h264_nvdec_hwaccel_select="h264_decoder"
2923 h264_vaapi_hwaccel_deps="vaapi"
2924 h264_vaapi_hwaccel_select="h264_decoder"
2925 h264_vdpau_hwaccel_deps="vdpau"
2926 h264_vdpau_hwaccel_select="h264_decoder"
2927 h264_videotoolbox_hwaccel_deps="videotoolbox"
2928 h264_videotoolbox_hwaccel_select="h264_decoder"
2929 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2930 hevc_d3d11va_hwaccel_select="hevc_decoder"
2931 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2932 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2933 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2934 hevc_dxva2_hwaccel_select="hevc_decoder"
2935 hevc_nvdec_hwaccel_deps="nvdec"
2936 hevc_nvdec_hwaccel_select="hevc_decoder"
2937 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2938 hevc_vaapi_hwaccel_select="hevc_decoder"
2939 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2940 hevc_vdpau_hwaccel_select="hevc_decoder"
2941 hevc_videotoolbox_hwaccel_deps="videotoolbox"
2942 hevc_videotoolbox_hwaccel_select="hevc_decoder"
2943 mjpeg_nvdec_hwaccel_deps="nvdec"
2944 mjpeg_nvdec_hwaccel_select="mjpeg_decoder"
2945 mjpeg_vaapi_hwaccel_deps="vaapi"
2946 mjpeg_vaapi_hwaccel_select="mjpeg_decoder"
2947 mpeg_xvmc_hwaccel_deps="xvmc"
2948 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2949 mpeg1_nvdec_hwaccel_deps="nvdec"
2950 mpeg1_nvdec_hwaccel_select="mpeg1video_decoder"
2951 mpeg1_vdpau_hwaccel_deps="vdpau"
2952 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2953 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2954 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2955 mpeg1_xvmc_hwaccel_deps="xvmc"
2956 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2957 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2958 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2959 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2960 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2961 mpeg2_dxva2_hwaccel_deps="dxva2"
2962 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2963 mpeg2_nvdec_hwaccel_deps="nvdec"
2964 mpeg2_nvdec_hwaccel_select="mpeg2video_decoder"
2965 mpeg2_vaapi_hwaccel_deps="vaapi"
2966 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2967 mpeg2_vdpau_hwaccel_deps="vdpau"
2968 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2969 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2970 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2971 mpeg2_xvmc_hwaccel_deps="xvmc"
2972 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2973 mpeg4_nvdec_hwaccel_deps="nvdec"
2974 mpeg4_nvdec_hwaccel_select="mpeg4_decoder"
2975 mpeg4_vaapi_hwaccel_deps="vaapi"
2976 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2977 mpeg4_vdpau_hwaccel_deps="vdpau"
2978 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2979 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2980 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2981 vc1_d3d11va_hwaccel_deps="d3d11va"
2982 vc1_d3d11va_hwaccel_select="vc1_decoder"
2983 vc1_d3d11va2_hwaccel_deps="d3d11va"
2984 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2985 vc1_dxva2_hwaccel_deps="dxva2"
2986 vc1_dxva2_hwaccel_select="vc1_decoder"
2987 vc1_nvdec_hwaccel_deps="nvdec"
2988 vc1_nvdec_hwaccel_select="vc1_decoder"
2989 vc1_vaapi_hwaccel_deps="vaapi"
2990 vc1_vaapi_hwaccel_select="vc1_decoder"
2991 vc1_vdpau_hwaccel_deps="vdpau"
2992 vc1_vdpau_hwaccel_select="vc1_decoder"
2993 vp8_nvdec_hwaccel_deps="nvdec"
2994 vp8_nvdec_hwaccel_select="vp8_decoder"
2995 vp8_vaapi_hwaccel_deps="vaapi"
2996 vp8_vaapi_hwaccel_select="vp8_decoder"
2997 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2998 vp9_d3d11va_hwaccel_select="vp9_decoder"
2999 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
3000 vp9_d3d11va2_hwaccel_select="vp9_decoder"
3001 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
3002 vp9_dxva2_hwaccel_select="vp9_decoder"
3003 vp9_nvdec_hwaccel_deps="nvdec"
3004 vp9_nvdec_hwaccel_select="vp9_decoder"
3005 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
3006 vp9_vaapi_hwaccel_select="vp9_decoder"
3007 vp9_vdpau_hwaccel_deps="vdpau VdpPictureInfoVP9"
3008 vp9_vdpau_hwaccel_select="vp9_decoder"
3009 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
3010 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
3011 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
3012 wmv3_nvdec_hwaccel_select="vc1_nvdec_hwaccel"
3013 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
3014 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
3015
3016 # hardware-accelerated codecs
3017 mediafoundation_deps="mftransform_h MFCreateAlignedMemoryBuffer"
3018 mediafoundation_extralibs="-lmfplat -lmfuuid -lole32 -lstrmiids"
3019 omx_deps="libdl pthreads"
3020 omx_rpi_select="omx"
3021 qsv_deps="libmfx"
3022 qsvdec_select="qsv"
3023 qsvenc_select="qsv"
3024 qsvvpp_select="qsv"
3025 vaapi_encode_deps="vaapi"
3026 v4l2_m2m_deps="linux_videodev2_h sem_timedwait"
3027
3028 hwupload_cuda_filter_deps="ffnvcodec"
3029 scale_npp_filter_deps="ffnvcodec libnpp"
3030 scale_cuda_filter_deps="ffnvcodec"
3031 scale_cuda_filter_deps_any="cuda_nvcc cuda_llvm"
3032 thumbnail_cuda_filter_deps="ffnvcodec"
3033 thumbnail_cuda_filter_deps_any="cuda_nvcc cuda_llvm"
3034 transpose_npp_filter_deps="ffnvcodec libnpp"
3035 overlay_cuda_filter_deps="ffnvcodec"
3036 overlay_cuda_filter_deps_any="cuda_nvcc cuda_llvm"
3037
3038 amf_deps_any="libdl LoadLibrary"
3039 nvenc_deps="ffnvcodec"
3040 nvenc_deps_any="libdl LoadLibrary"
3041 nvenc_encoder_deps="nvenc"
3042
3043 aac_mf_encoder_deps="mediafoundation"
3044 ac3_mf_encoder_deps="mediafoundation"
3045 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
3046 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
3047 h264_amf_encoder_deps="amf"
3048 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
3049 h264_cuvid_decoder_deps="cuvid"
3050 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
3051 h264_mediacodec_decoder_deps="mediacodec"
3052 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
3053 h264_mf_encoder_deps="mediafoundation"
3054 h264_mmal_decoder_deps="mmal"
3055 h264_nvenc_encoder_deps="nvenc"
3056 h264_omx_encoder_deps="omx"
3057 h264_qsv_decoder_select="h264_mp4toannexb_bsf qsvdec"
3058 h264_qsv_encoder_select="qsvenc"
3059 h264_rkmpp_decoder_deps="rkmpp"
3060 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
3061 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
3062 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
3063 h264_v4l2m2m_decoder_select="h264_mp4toannexb_bsf"
3064 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
3065 hevc_amf_encoder_deps="amf"
3066 hevc_cuvid_decoder_deps="cuvid"
3067 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
3068 hevc_mediacodec_decoder_deps="mediacodec"
3069 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
3070 hevc_mf_encoder_deps="mediafoundation"
3071 hevc_nvenc_encoder_deps="nvenc"
3072 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf qsvdec"
3073 hevc_qsv_encoder_select="hevcparse qsvenc"
3074 hevc_rkmpp_decoder_deps="rkmpp"
3075 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
3076 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
3077 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
3078 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
3079 hevc_v4l2m2m_decoder_select="hevc_mp4toannexb_bsf"
3080 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
3081 mjpeg_cuvid_decoder_deps="cuvid"
3082 mjpeg_qsv_decoder_select="qsvdec"
3083 mjpeg_qsv_encoder_deps="libmfx"
3084 mjpeg_qsv_encoder_select="qsvenc"
3085 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
3086 mjpeg_vaapi_encoder_select="cbs_jpeg jpegtables vaapi_encode"
3087 mp3_mf_encoder_deps="mediafoundation"
3088 mpeg1_cuvid_decoder_deps="cuvid"
3089 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
3090 mpeg2_crystalhd_decoder_select="crystalhd"
3091 mpeg2_cuvid_decoder_deps="cuvid"
3092 mpeg2_mmal_decoder_deps="mmal"
3093 mpeg2_mediacodec_decoder_deps="mediacodec"
3094 mpeg2_qsv_decoder_select="qsvdec"
3095 mpeg2_qsv_encoder_select="qsvenc"
3096 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
3097 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
3098 mpeg4_crystalhd_decoder_select="crystalhd"
3099 mpeg4_cuvid_decoder_deps="cuvid"
3100 mpeg4_mediacodec_decoder_deps="mediacodec"
3101 mpeg4_mmal_decoder_deps="mmal"
3102 mpeg4_omx_encoder_deps="omx"
3103 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
3104 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
3105 msmpeg4_crystalhd_decoder_select="crystalhd"
3106 nvenc_h264_encoder_select="h264_nvenc_encoder"
3107 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
3108 vc1_crystalhd_decoder_select="crystalhd"
3109 vc1_cuvid_decoder_deps="cuvid"
3110 vc1_mmal_decoder_deps="mmal"
3111 vc1_qsv_decoder_select="qsvdec"
3112 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
3113 vp8_cuvid_decoder_deps="cuvid"
3114 vp8_mediacodec_decoder_deps="mediacodec"
3115 vp8_qsv_decoder_select="qsvdec"
3116 vp8_rkmpp_decoder_deps="rkmpp"
3117 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
3118 vp8_vaapi_encoder_select="vaapi_encode"
3119 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
3120 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
3121 vp9_cuvid_decoder_deps="cuvid"
3122 vp9_mediacodec_decoder_deps="mediacodec"
3123 vp9_qsv_decoder_select="qsvdec"
3124 vp9_rkmpp_decoder_deps="rkmpp"
3125 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
3126 vp9_vaapi_encoder_select="vaapi_encode"
3127 vp9_qsv_encoder_deps="libmfx MFX_CODEC_VP9"
3128 vp9_qsv_encoder_select="qsvenc"
3129 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
3130 wmv3_crystalhd_decoder_select="crystalhd"
3131
3132 # parsers
3133 aac_parser_select="adts_header"
3134 av1_parser_select="cbs_av1"
3135 h264_parser_select="golomb h264dsp h264parse"
3136 hevc_parser_select="hevcparse"
3137 mpegaudio_parser_select="mpegaudioheader"
3138 mpegvideo_parser_select="mpegvideo"
3139 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
3140 vc1_parser_select="vc1dsp"
3141
3142 # bitstream_filters
3143 aac_adtstoasc_bsf_select="adts_header"
3144 av1_frame_merge_bsf_select="cbs_av1"
3145 av1_frame_split_bsf_select="cbs_av1"
3146 av1_metadata_bsf_select="cbs_av1"
3147 eac3_core_bsf_select="ac3_parser"
3148 filter_units_bsf_select="cbs"
3149 h264_metadata_bsf_deps="const_nan"
3150 h264_metadata_bsf_select="cbs_h264"
3151 h264_redundant_pps_bsf_select="cbs_h264"
3152 hevc_metadata_bsf_select="cbs_h265"
3153 mjpeg2jpeg_bsf_select="jpegtables"
3154 mpeg2_metadata_bsf_select="cbs_mpeg2"
3155 trace_headers_bsf_select="cbs"
3156 vp9_metadata_bsf_select="cbs_vp9"
3157
3158 # external libraries
3159 aac_at_decoder_deps="audiotoolbox"
3160 aac_at_decoder_select="aac_adtstoasc_bsf"
3161 ac3_at_decoder_deps="audiotoolbox"
3162 ac3_at_decoder_select="ac3_parser"
3163 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
3164 alac_at_decoder_deps="audiotoolbox"
3165 amr_nb_at_decoder_deps="audiotoolbox"
3166 avisynth_deps_any="libdl LoadLibrary"
3167 avisynth_demuxer_deps="avisynth"
3168 avisynth_demuxer_select="riffdec"
3169 eac3_at_decoder_deps="audiotoolbox"
3170 eac3_at_decoder_select="ac3_parser"
3171 gsm_ms_at_decoder_deps="audiotoolbox"
3172 ilbc_at_decoder_deps="audiotoolbox"
3173 mp1_at_decoder_deps="audiotoolbox"
3174 mp2_at_decoder_deps="audiotoolbox"
3175 mp3_at_decoder_deps="audiotoolbox"
3176 mp1_at_decoder_select="mpegaudioheader"
3177 mp2_at_decoder_select="mpegaudioheader"
3178 mp3_at_decoder_select="mpegaudioheader"
3179 pcm_alaw_at_decoder_deps="audiotoolbox"
3180 pcm_mulaw_at_decoder_deps="audiotoolbox"
3181 qdmc_decoder_select="fft"
3182 qdmc_at_decoder_deps="audiotoolbox"
3183 qdm2_at_decoder_deps="audiotoolbox"
3184 aac_at_encoder_deps="audiotoolbox"
3185 aac_at_encoder_select="audio_frame_queue"
3186 alac_at_encoder_deps="audiotoolbox"
3187 alac_at_encoder_select="audio_frame_queue"
3188 ilbc_at_encoder_deps="audiotoolbox"
3189 ilbc_at_encoder_select="audio_frame_queue"
3190 pcm_alaw_at_encoder_deps="audiotoolbox"
3191 pcm_alaw_at_encoder_select="audio_frame_queue"
3192 pcm_mulaw_at_encoder_deps="audiotoolbox"
3193 pcm_mulaw_at_encoder_select="audio_frame_queue"
3194 chromaprint_muxer_deps="chromaprint"
3195 h264_videotoolbox_encoder_deps="pthreads"
3196 h264_videotoolbox_encoder_select="videotoolbox_encoder"
3197 hevc_videotoolbox_encoder_deps="pthreads"
3198 hevc_videotoolbox_encoder_select="videotoolbox_encoder"
3199 libaom_av1_decoder_deps="libaom"
3200 libaom_av1_encoder_deps="libaom"
3201 libaom_av1_encoder_select="extract_extradata_bsf"
3202 libaribb24_decoder_deps="libaribb24"
3203 libcelt_decoder_deps="libcelt"
3204 libcodec2_decoder_deps="libcodec2"
3205 libcodec2_encoder_deps="libcodec2"
3206 libdav1d_decoder_deps="libdav1d"
3207 libdavs2_decoder_deps="libdavs2"
3208 libfdk_aac_decoder_deps="libfdk_aac"
3209 libfdk_aac_encoder_deps="libfdk_aac"
3210 libfdk_aac_encoder_select="audio_frame_queue"
3211 libgme_demuxer_deps="libgme"
3212 libgsm_decoder_deps="libgsm"
3213 libgsm_encoder_deps="libgsm"
3214 libgsm_ms_decoder_deps="libgsm"
3215 libgsm_ms_encoder_deps="libgsm"
3216 libilbc_decoder_deps="libilbc"
3217 libilbc_encoder_deps="libilbc"
3218 libkvazaar_encoder_deps="libkvazaar"
3219 libmodplug_demuxer_deps="libmodplug"
3220 libmp3lame_encoder_deps="libmp3lame"
3221 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
3222 libopencore_amrnb_decoder_deps="libopencore_amrnb"
3223 libopencore_amrnb_encoder_deps="libopencore_amrnb"
3224 libopencore_amrnb_encoder_select="audio_frame_queue"
3225 libopencore_amrwb_decoder_deps="libopencore_amrwb"
3226 libopenh264_decoder_deps="libopenh264"
3227 libopenh264_decoder_select="h264_mp4toannexb_bsf"
3228 libopenh264_encoder_deps="libopenh264"
3229 libopenjpeg_decoder_deps="libopenjpeg"
3230 libopenjpeg_encoder_deps="libopenjpeg"
3231 libopenmpt_demuxer_deps="libopenmpt"
3232 libopus_decoder_deps="libopus"
3233 libopus_encoder_deps="libopus"
3234 libopus_encoder_select="audio_frame_queue"
3235 librav1e_encoder_deps="librav1e"
3236 librav1e_encoder_select="extract_extradata_bsf"
3237 librsvg_decoder_deps="librsvg"
3238 libshine_encoder_deps="libshine"
3239 libshine_encoder_select="audio_frame_queue"
3240 libspeex_decoder_deps="libspeex"
3241 libspeex_encoder_deps="libspeex"
3242 libspeex_encoder_select="audio_frame_queue"
3243 libtheora_encoder_deps="libtheora"
3244 libtwolame_encoder_deps="libtwolame"
3245 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
3246 libvorbis_decoder_deps="libvorbis"
3247 libvorbis_encoder_deps="libvorbis libvorbisenc"
3248 libvorbis_encoder_select="audio_frame_queue"
3249 libvpx_vp8_decoder_deps="libvpx"
3250 libvpx_vp8_encoder_deps="libvpx"
3251 libvpx_vp9_decoder_deps="libvpx"
3252 libvpx_vp9_encoder_deps="libvpx"
3253 libwavpack_encoder_deps="libwavpack"
3254 libwavpack_encoder_select="audio_frame_queue"
3255 libwebp_encoder_deps="libwebp"
3256 libwebp_anim_encoder_deps="libwebp"
3257 libx262_encoder_deps="libx262"
3258 libx264_encoder_deps="libx264"
3259 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
3260 libx264rgb_encoder_select="libx264_encoder"
3261 libx265_encoder_deps="libx265"
3262 libxavs_encoder_deps="libxavs"
3263 libxavs2_encoder_deps="libxavs2"
3264 libxvid_encoder_deps="libxvid"
3265 libzvbi_teletext_decoder_deps="libzvbi"
3266 vapoursynth_demuxer_deps="vapoursynth"
3267 videotoolbox_suggest="coreservices"
3268 videotoolbox_deps="corefoundation coremedia corevideo"
3269 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
3270
3271 # demuxers / muxers
3272 ac3_demuxer_select="ac3_parser"
3273 act_demuxer_select="riffdec"
3274 aiff_muxer_select="iso_media"
3275 asf_demuxer_select="riffdec"
3276 asf_o_demuxer_select="riffdec"
3277 asf_muxer_select="riffenc"
3278 asf_stream_muxer_select="asf_muxer"
3279 av1_demuxer_select="av1_frame_merge_bsf av1_parser"
3280 avi_demuxer_select="iso_media riffdec exif"
3281 avi_muxer_select="riffenc"
3282 caf_demuxer_select="iso_media riffdec"
3283 caf_muxer_select="iso_media"
3284 dash_muxer_select="mp4_muxer"
3285 dash_demuxer_deps="libxml2"
3286 dirac_demuxer_select="dirac_parser"
3287 dts_demuxer_select="dca_parser"
3288 dtshd_demuxer_select="dca_parser"
3289 dv_demuxer_select="dvprofile"
3290 dv_muxer_select="dvprofile"
3291 dxa_demuxer_select="riffdec"
3292 eac3_demuxer_select="ac3_parser"
3293 f4v_muxer_select="mov_muxer"
3294 fifo_muxer_deps="threads"
3295 flac_demuxer_select="flac_parser"
3296 flv_muxer_select="aac_adtstoasc_bsf"
3297 gxf_muxer_select="pcm_rechunk_bsf"
3298 hds_muxer_select="flv_muxer"
3299 hls_muxer_select="mpegts_muxer"
3300 hls_muxer_suggest="gcrypt openssl"
3301 image2_alias_pix_demuxer_select="image2_demuxer"
3302 image2_brender_pix_demuxer_select="image2_demuxer"
3303 ipod_muxer_select="mov_muxer"
3304 ismv_muxer_select="mov_muxer"
3305 ivf_muxer_select="av1_metadata_bsf vp9_superframe_bsf"
3306 latm_muxer_select="aac_adtstoasc_bsf"
3307 matroska_audio_muxer_select="matroska_muxer"
3308 matroska_demuxer_select="iso_media riffdec"
3309 matroska_demuxer_suggest="bzlib lzo zlib"
3310 matroska_muxer_select="iso_media riffenc vp9_superframe_bsf aac_adtstoasc_bsf"
3311 mlp_demuxer_select="mlp_parser"
3312 mmf_muxer_select="riffenc"
3313 mov_demuxer_select="iso_media riffdec"
3314 mov_demuxer_suggest="zlib"
3315 mov_muxer_select="iso_media riffenc rtpenc_chain vp9_superframe_bsf aac_adtstoasc_bsf"
3316 mp3_demuxer_select="mpegaudio_parser"
3317 mp3_muxer_select="mpegaudioheader"
3318 mp4_muxer_select="mov_muxer"
3319 mpegts_demuxer_select="iso_media"
3320 mpegts_muxer_select="adts_muxer latm_muxer h264_mp4toannexb_bsf hevc_mp4toannexb_bsf"
3321 mpegtsraw_demuxer_select="mpegts_demuxer"
3322 mxf_muxer_select="golomb pcm_rechunk_bsf"
3323 mxf_d10_muxer_select="mxf_muxer"
3324 mxf_opatom_muxer_select="mxf_muxer"
3325 nut_muxer_select="riffenc"
3326 nuv_demuxer_select="riffdec"
3327 oga_muxer_select="ogg_muxer"
3328 ogg_demuxer_select="dirac_parse"
3329 ogv_muxer_select="ogg_muxer"
3330 opus_muxer_select="ogg_muxer"
3331 psp_muxer_select="mov_muxer"
3332 rtp_demuxer_select="sdp_demuxer"
3333 rtp_muxer_select="golomb jpegtables"
3334 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3335 rtsp_demuxer_select="http_protocol rtpdec"
3336 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3337 sap_demuxer_select="sdp_demuxer"
3338 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3339 sdp_demuxer_select="rtpdec"
3340 smoothstreaming_muxer_select="ismv_muxer"
3341 spdif_demuxer_select="adts_header"
3342 spdif_muxer_select="adts_header"
3343 spx_muxer_select="ogg_muxer"
3344 swf_demuxer_suggest="zlib"
3345 tak_demuxer_select="tak_parser"
3346 truehd_demuxer_select="mlp_parser"
3347 tg2_muxer_select="mov_muxer"
3348 tgp_muxer_select="mov_muxer"
3349 vobsub_demuxer_select="mpegps_demuxer"
3350 w64_demuxer_select="wav_demuxer"
3351 w64_muxer_select="wav_muxer"
3352 wav_demuxer_select="riffdec"
3353 wav_muxer_select="riffenc"
3354 webm_chunk_muxer_select="webm_muxer"
3355 webm_muxer_select="iso_media riffenc"
3356 webm_dash_manifest_demuxer_select="matroska_demuxer"
3357 wtv_demuxer_select="mpegts_demuxer riffdec"
3358 wtv_muxer_select="mpegts_muxer riffenc"
3359 xmv_demuxer_select="riffdec"
3360 xwma_demuxer_select="riffdec"
3361
3362 # indevs / outdevs
3363 android_camera_indev_deps="android camera2ndk mediandk pthreads"
3364 android_camera_indev_extralibs="-landroid -lcamera2ndk -lmediandk"
3365 alsa_indev_deps="alsa"
3366 alsa_outdev_deps="alsa"
3367 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3368 avfoundation_indev_suggest="coregraphics applicationservices"
3369 avfoundation_indev_extralibs="-framework Foundation"
3370 audiotoolbox_outdev_deps="audiotoolbox pthreads"
3371 audiotoolbox_outdev_extralibs="-framework AudioToolbox -framework CoreAudio"
3372 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3373 caca_outdev_deps="libcaca"
3374 decklink_deps_any="libdl LoadLibrary"
3375 decklink_indev_deps="decklink threads"
3376 decklink_indev_extralibs="-lstdc++"
3377 decklink_outdev_deps="decklink threads"
3378 decklink_outdev_suggest="libklvanc"
3379 decklink_outdev_extralibs="-lstdc++"
3380 dshow_indev_deps="IBaseFilter"
3381 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3382 fbdev_indev_deps="linux_fb_h"
3383 fbdev_outdev_deps="linux_fb_h"
3384 gdigrab_indev_deps="CreateDIBSection"
3385 gdigrab_indev_extralibs="-lgdi32"
3386 gdigrab_indev_select="bmp_decoder"
3387 iec61883_indev_deps="libiec61883"
3388 jack_indev_deps="libjack"
3389 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3390 kmsgrab_indev_deps="libdrm"
3391 lavfi_indev_deps="avfilter"
3392 libcdio_indev_deps="libcdio"
3393 libdc1394_indev_deps="libdc1394"
3394 openal_indev_deps="openal"
3395 opengl_outdev_deps="opengl"
3396 opengl_outdev_suggest="sdl2"
3397 oss_indev_deps_any="sys_soundcard_h"
3398 oss_outdev_deps_any="sys_soundcard_h"
3399 pulse_indev_deps="libpulse"
3400 pulse_outdev_deps="libpulse"
3401 sdl2_outdev_deps="sdl2"
3402 sndio_indev_deps="sndio"
3403 sndio_outdev_deps="sndio"
3404 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3405 v4l2_indev_suggest="libv4l2"
3406 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3407 v4l2_outdev_suggest="libv4l2"
3408 vfwcap_indev_deps="vfw32 vfwcap_defines"
3409 xcbgrab_indev_deps="libxcb"
3410 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3411 xv_outdev_deps="xlib"
3412
3413 # protocols
3414 async_protocol_deps="threads"
3415 bluray_protocol_deps="libbluray"
3416 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3417 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl mbedtls"
3418 ffrtmpcrypt_protocol_select="tcp_protocol"
3419 ffrtmphttp_protocol_conflict="librtmp_protocol"
3420 ffrtmphttp_protocol_select="http_protocol"
3421 ftp_protocol_select="tcp_protocol"
3422 gopher_protocol_select="network"
3423 http_protocol_select="tcp_protocol"
3424 http_protocol_suggest="zlib"
3425 httpproxy_protocol_select="tcp_protocol"
3426 httpproxy_protocol_suggest="zlib"
3427 https_protocol_select="tls_protocol"
3428 https_protocol_suggest="zlib"
3429 icecast_protocol_select="http_protocol"
3430 mmsh_protocol_select="http_protocol"
3431 mmst_protocol_select="network"
3432 rtmp_protocol_conflict="librtmp_protocol"
3433 rtmp_protocol_select="tcp_protocol"
3434 rtmp_protocol_suggest="zlib"
3435 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3436 rtmpe_protocol_suggest="zlib"
3437 rtmps_protocol_conflict="librtmp_protocol"
3438 rtmps_protocol_select="tls_protocol"
3439 rtmps_protocol_suggest="zlib"
3440 rtmpt_protocol_select="ffrtmphttp_protocol"
3441 rtmpt_protocol_suggest="zlib"
3442 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3443 rtmpte_protocol_suggest="zlib"
3444 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3445 rtmpts_protocol_suggest="zlib"
3446 rtp_protocol_select="udp_protocol"
3447 schannel_conflict="openssl gnutls libtls mbedtls"
3448 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3449 sctp_protocol_select="network"
3450 securetransport_conflict="openssl gnutls libtls mbedtls"
3451 srtp_protocol_select="rtp_protocol srtp"
3452 tcp_protocol_select="network"
3453 tls_protocol_deps_any="gnutls openssl schannel securetransport libtls mbedtls"
3454 tls_protocol_select="tcp_protocol"
3455 udp_protocol_select="network"
3456 udplite_protocol_select="network"
3457 unix_protocol_deps="sys_un_h"
3458 unix_protocol_select="network"
3459
3460 # external library protocols
3461 libamqp_protocol_deps="librabbitmq"
3462 libamqp_protocol_select="network"
3463 librtmp_protocol_deps="librtmp"
3464 librtmpe_protocol_deps="librtmp"
3465 librtmps_protocol_deps="librtmp"
3466 librtmpt_protocol_deps="librtmp"
3467 librtmpte_protocol_deps="librtmp"
3468 libsmbclient_protocol_deps="libsmbclient gplv3"
3469 libsrt_protocol_deps="libsrt"
3470 libsrt_protocol_select="network"
3471 libssh_protocol_deps="libssh"
3472 libtls_conflict="openssl gnutls mbedtls"
3473 libzmq_protocol_deps="libzmq"
3474 libzmq_protocol_select="network"
3475
3476 # filters
3477 afftdn_filter_deps="avcodec"
3478 afftdn_filter_select="fft"
3479 afftfilt_filter_deps="avcodec"
3480 afftfilt_filter_select="fft"
3481 afir_filter_deps="avcodec"
3482 afir_filter_select="rdft"
3483 amovie_filter_deps="avcodec avformat"
3484 aresample_filter_deps="swresample"
3485 asr_filter_deps="pocketsphinx"
3486 ass_filter_deps="libass"
3487 atempo_filter_deps="avcodec"
3488 atempo_filter_select="rdft"
3489 avgblur_opencl_filter_deps="opencl"
3490 avgblur_vulkan_filter_deps="vulkan libglslang"
3491 azmq_filter_deps="libzmq"
3492 blackframe_filter_deps="gpl"
3493 bm3d_filter_deps="avcodec"
3494 bm3d_filter_select="dct"
3495 boxblur_filter_deps="gpl"
3496 boxblur_opencl_filter_deps="opencl gpl"
3497 bs2b_filter_deps="libbs2b"
3498 chromaber_vulkan_filter_deps="vulkan libglslang"
3499 colorkey_opencl_filter_deps="opencl"
3500 colormatrix_filter_deps="gpl"
3501 convolution_opencl_filter_deps="opencl"
3502 convolve_filter_deps="avcodec"
3503 convolve_filter_select="fft"
3504 coreimage_filter_deps="coreimage appkit"
3505 coreimage_filter_extralibs="-framework OpenGL"
3506 coreimagesrc_filter_deps="coreimage appkit"
3507 coreimagesrc_filter_extralibs="-framework OpenGL"
3508 cover_rect_filter_deps="avcodec avformat gpl"
3509 cropdetect_filter_deps="gpl"
3510 deconvolve_filter_deps="avcodec"
3511 deconvolve_filter_select="fft"
3512 deinterlace_qsv_filter_deps="libmfx"
3513 deinterlace_vaapi_filter_deps="vaapi"
3514 delogo_filter_deps="gpl"
3515 denoise_vaapi_filter_deps="vaapi"
3516 derain_filter_select="dnn"
3517 deshake_filter_select="pixelutils"
3518 deshake_opencl_filter_deps="opencl"
3519 dilation_opencl_filter_deps="opencl"
3520 dnn_processing_filter_deps="swscale"
3521 dnn_processing_filter_select="dnn"
3522 drawtext_filter_deps="libfreetype"
3523 drawtext_filter_suggest="libfontconfig libfribidi"
3524 elbg_filter_deps="avcodec"
3525 eq_filter_deps="gpl"
3526 erosion_opencl_filter_deps="opencl"
3527 fftfilt_filter_deps="avcodec"
3528 fftfilt_filter_select="rdft"
3529 fftdnoiz_filter_deps="avcodec"
3530 fftdnoiz_filter_select="fft"
3531 find_rect_filter_deps="avcodec avformat gpl"
3532 firequalizer_filter_deps="avcodec"
3533 firequalizer_filter_select="rdft"
3534 flite_filter_deps="libflite"
3535 framerate_filter_select="scene_sad"
3536 freezedetect_filter_select="scene_sad"
3537 frei0r_filter_deps="frei0r libdl"
3538 frei0r_src_filter_deps="frei0r libdl"
3539 fspp_filter_deps="gpl"
3540 headphone_filter_select="fft"
3541 histeq_filter_deps="gpl"
3542 hqdn3d_filter_deps="gpl"
3543 interlace_filter_deps="gpl"
3544 kerndeint_filter_deps="gpl"
3545 ladspa_filter_deps="ladspa libdl"
3546 lensfun_filter_deps="liblensfun version3"
3547 lv2_filter_deps="lv2"
3548 mcdeint_filter_deps="avcodec gpl"
3549 movie_filter_deps="avcodec avformat"
3550 mpdecimate_filter_deps="gpl"
3551 mpdecimate_filter_select="pixelutils"
3552 minterpolate_filter_select="scene_sad"
3553 mptestsrc_filter_deps="gpl"
3554 negate_filter_deps="lut_filter"
3555 nlmeans_opencl_filter_deps="opencl"
3556 nnedi_filter_deps="gpl"
3557 ocr_filter_deps="libtesseract"
3558 ocv_filter_deps="libopencv"
3559 openclsrc_filter_deps="opencl"
3560 overlay_opencl_filter_deps="opencl"
3561 overlay_qsv_filter_deps="libmfx"
3562 overlay_qsv_filter_select="qsvvpp"
3563 overlay_vulkan_filter_deps="vulkan libglslang"
3564 owdenoise_filter_deps="gpl"
3565 pad_opencl_filter_deps="opencl"
3566 pan_filter_deps="swresample"
3567 perspective_filter_deps="gpl"
3568 phase_filter_deps="gpl"
3569 pp7_filter_deps="gpl"
3570 pp_filter_deps="gpl postproc"
3571 prewitt_opencl_filter_deps="opencl"
3572 procamp_vaapi_filter_deps="vaapi"
3573 program_opencl_filter_deps="opencl"
3574 pullup_filter_deps="gpl"
3575 removelogo_filter_deps="avcodec avformat swscale"
3576 repeatfields_filter_deps="gpl"
3577 resample_filter_deps="avresample"
3578 roberts_opencl_filter_deps="opencl"
3579 rubberband_filter_deps="librubberband"
3580 sab_filter_deps="gpl swscale"
3581 scale2ref_filter_deps="swscale"
3582 scale_filter_deps="swscale"
3583 scale_qsv_filter_deps="libmfx"
3584 scdet_filter_select="scene_sad"
3585 select_filter_select="scene_sad"
3586 sharpness_vaapi_filter_deps="vaapi"
3587 showcqt_filter_deps="avcodec avformat swscale"
3588 showcqt_filter_suggest="libfontconfig libfreetype"
3589 showcqt_filter_select="fft"
3590 showfreqs_filter_deps="avcodec"
3591 showfreqs_filter_select="fft"
3592 showspatial_filter_select="fft"
3593 showspectrum_filter_deps="avcodec"
3594 showspectrum_filter_select="fft"
3595 showspectrumpic_filter_deps="avcodec"
3596 showspectrumpic_filter_select="fft"
3597 signature_filter_deps="gpl avcodec avformat"
3598 sinc_filter_select="rdft"
3599 smartblur_filter_deps="gpl swscale"
3600 sobel_opencl_filter_deps="opencl"
3601 sofalizer_filter_deps="libmysofa avcodec"
3602 sofalizer_filter_select="fft"
3603 spectrumsynth_filter_deps="avcodec"
3604 spectrumsynth_filter_select="fft"
3605 spp_filter_deps="gpl avcodec"
3606 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3607 sr_filter_deps="avformat swscale"
3608 sr_filter_select="dnn"
3609 stereo3d_filter_deps="gpl"
3610 subtitles_filter_deps="avformat avcodec libass"
3611 super2xsai_filter_deps="gpl"
3612 pixfmts_super2xsai_test_deps="super2xsai_filter"
3613 superequalizer_filter_select="rdft"
3614 surround_filter_select="rdft"
3615 tinterlace_filter_deps="gpl"
3616 tinterlace_merge_test_deps="tinterlace_filter"
3617 tinterlace_pad_test_deps="tinterlace_filter"
3618 tonemap_filter_deps="const_nan"
3619 tonemap_vaapi_filter_deps="vaapi VAProcFilterParameterBufferHDRToneMapping"
3620 tonemap_opencl_filter_deps="opencl const_nan"
3621 transpose_opencl_filter_deps="opencl"
3622 transpose_vaapi_filter_deps="vaapi VAProcPipelineCaps_rotation_flags"
3623 unsharp_opencl_filter_deps="opencl"
3624 uspp_filter_deps="gpl avcodec"
3625 vaguedenoiser_filter_deps="gpl"
3626 vidstabdetect_filter_deps="libvidstab"
3627 vidstabtransform_filter_deps="libvidstab"
3628 libvmaf_filter_deps="libvmaf pthreads"
3629 zmq_filter_deps="libzmq"
3630 zoompan_filter_deps="swscale"
3631 zscale_filter_deps="libzimg const_nan"
3632 scale_vaapi_filter_deps="vaapi"
3633 scale_vulkan_filter_deps="vulkan libglslang"
3634 vpp_qsv_filter_deps="libmfx"
3635 vpp_qsv_filter_select="qsvvpp"
3636 xfade_opencl_filter_deps="opencl"
3637 yadif_cuda_filter_deps="ffnvcodec"
3638 yadif_cuda_filter_deps_any="cuda_nvcc cuda_llvm"
3639
3640 # examples
3641 avio_list_dir_deps="avformat avutil"
3642 avio_reading_deps="avformat avcodec avutil"
3643 decode_audio_example_deps="avcodec avutil"
3644 decode_video_example_deps="avcodec avutil"
3645 demuxing_decoding_example_deps="avcodec avformat avutil"
3646 encode_audio_example_deps="avcodec avutil"
3647 encode_video_example_deps="avcodec avutil"
3648 extract_mvs_example_deps="avcodec avformat avutil"
3649 filter_audio_example_deps="avfilter avutil"
3650 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3651 filtering_video_example_deps="avfilter avcodec avformat avutil"
3652 http_multiclient_example_deps="avformat avutil fork"
3653 hw_decode_example_deps="avcodec avformat avutil"
3654 metadata_example_deps="avformat avutil"
3655 muxing_example_deps="avcodec avformat avutil swscale"
3656 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3657 remuxing_example_deps="avcodec avformat avutil"
3658 resampling_audio_example_deps="avutil swresample"
3659 scaling_video_example_deps="avutil swscale"
3660 transcode_aac_example_deps="avcodec avformat swresample"
3661 transcoding_example_deps="avfilter avcodec avformat avutil"
3662 vaapi_encode_example_deps="avcodec avutil h264_vaapi_encoder"
3663 vaapi_transcode_example_deps="avcodec avformat avutil h264_vaapi_encoder"
3664
3665 # EXTRALIBS_LIST
3666 cpu_init_extralibs="pthreads_extralibs"
3667 cws2fws_extralibs="zlib_extralibs"
3668
3669 # libraries, in any order
3670 avcodec_deps="avutil"
3671 avcodec_suggest="libm"
3672 avcodec_select="null_bsf"
3673 avdevice_deps="avformat avcodec avutil"
3674 avdevice_suggest="libm"
3675 avfilter_deps="avutil"
3676 avfilter_suggest="libm"
3677 avformat_deps="avcodec avutil"
3678 avformat_suggest="libm network zlib"
3679 avresample_deps="avutil"
3680 avresample_suggest="libm"
3681 avutil_suggest="clock_gettime ffnvcodec libm libdrm libmfx opencl user32 vaapi vulkan videotoolbox corefoundation corevideo coremedia bcrypt"
3682 postproc_deps="avutil gpl"
3683 postproc_suggest="libm"
3684 swresample_deps="avutil"
3685 swresample_suggest="libm libsoxr"
3686 swscale_deps="avutil"
3687 swscale_suggest="libm"
3688
3689 avcodec_extralibs="pthreads_extralibs iconv_extralibs dxva2_extralibs"
3690 avfilter_extralibs="pthreads_extralibs"
3691 avutil_extralibs="d3d11va_extralibs nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3692
3693 # programs
3694 ffmpeg_deps="avcodec avfilter avformat"
3695 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3696                hflip_filter null_filter
3697                transpose_filter trim_filter vflip_filter"
3698 ffmpeg_suggest="ole32 psapi shell32"
3699 ffplay_deps="avcodec avformat swscale swresample sdl2"
3700 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3701 ffplay_suggest="shell32"
3702 ffprobe_deps="avcodec avformat"
3703 ffprobe_suggest="shell32"
3704
3705 # documentation
3706 podpages_deps="perl"
3707 manpages_deps="perl pod2man"
3708 htmlpages_deps="perl"
3709 htmlpages_deps_any="makeinfo_html texi2html"
3710 txtpages_deps="perl makeinfo"
3711 doc_deps_any="manpages htmlpages podpages txtpages"
3712
3713 # default parameters
3714
3715 logfile="ffbuild/config.log"
3716
3717 # installation paths
3718 prefix_default="/usr/local"
3719 bindir_default='${prefix}/bin'
3720 datadir_default='${prefix}/share/ffmpeg'
3721 docdir_default='${prefix}/share/doc/ffmpeg'
3722 incdir_default='${prefix}/include'
3723 libdir_default='${prefix}/lib'
3724 mandir_default='${prefix}/share/man'
3725
3726 # toolchain
3727 ar_default="ar"
3728 cc_default="gcc"
3729 cxx_default="g++"
3730 host_cc_default="gcc"
3731 doxygen_default="doxygen"
3732 install="install"
3733 ln_s_default="ln -s -f"
3734 nm_default="nm -g"
3735 pkg_config_default=pkg-config
3736 ranlib_default="ranlib"
3737 strip_default="strip"
3738 version_script='--version-script'
3739 objformat="elf32"
3740 x86asmexe_default="nasm"
3741 windres_default="windres"
3742 striptype="direct"
3743
3744 # OS
3745 target_os_default=$(tolower $(uname -s))
3746 host_os=$target_os_default
3747
3748 # machine
3749 if test "$target_os_default" = aix; then
3750     arch_default=$(uname -p)
3751     strip_default="strip -X32_64"
3752     nm_default="nm -g -X32_64"
3753 else
3754     arch_default=$(uname -m)
3755 fi
3756 cpu="generic"
3757 intrinsics="none"
3758
3759 # configurable options
3760 enable $PROGRAM_LIST
3761 enable $DOCUMENT_LIST
3762 enable $EXAMPLE_LIST
3763 enable $(filter_out avresample $LIBRARY_LIST)
3764 enable stripping
3765
3766 enable asm
3767 enable debug
3768 enable doc
3769 enable faan faandct faanidct
3770 enable large_tests
3771 enable optimizations
3772 enable runtime_cpudetect
3773 enable safe_bitstream_reader
3774 enable static
3775 enable swscale_alpha
3776 enable valgrind_backtrace
3777
3778 sws_max_filter_size_default=256
3779 set_default sws_max_filter_size
3780
3781 # internal components are enabled by default
3782 enable $EXTRALIBS_LIST
3783
3784 # Avoid external, non-system, libraries getting enabled by dependency resolution
3785 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3786
3787 # build settings
3788 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3789 LIBPREF="lib"
3790 LIBSUF=".a"
3791 FULLNAME='$(NAME)$(BUILDSUF)'
3792 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3793 SLIBPREF="lib"
3794 SLIBSUF=".so"
3795 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3796 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3797 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3798 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3799 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3800 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3801 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3802
3803 asflags_filter=echo
3804 cflags_filter=echo
3805 ldflags_filter=echo
3806
3807 AS_C='-c'
3808 AS_O='-o $@'
3809 CC_C='-c'
3810 CC_E='-E -o $@'
3811 CC_O='-o $@'
3812 CXX_C='-c'
3813 CXX_O='-o $@'
3814 OBJCC_C='-c'
3815 OBJCC_E='-E -o $@'
3816 OBJCC_O='-o $@'
3817 X86ASM_O='-o $@'
3818 LD_O='-o $@'
3819 LD_LIB='-l%'
3820 LD_PATH='-L'
3821 HOSTCC_C='-c'
3822 HOSTCC_E='-E -o $@'
3823 HOSTCC_O='-o $@'
3824 HOSTLD_O='-o $@'
3825 NVCC_C='-c'
3826 NVCC_O='-o $@'
3827
3828 host_extralibs='-lm'
3829 host_cflags_filter=echo
3830 host_ldflags_filter=echo
3831
3832 target_path='$(CURDIR)'
3833
3834 # since the object filename is not given with the -MM flag, the compiler
3835 # is only able to print the basename, and we must add the path ourselves
3836 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3837 DEPFLAGS='-MM'
3838
3839 mkdir -p ffbuild
3840
3841 # find source path
3842 if test -f configure; then
3843     source_path=.
3844 elif test -f src/configure; then
3845     source_path=src
3846 else
3847     source_path=$(cd $(dirname "$0"); pwd)
3848     case "$source_path" in
3849         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3850     esac
3851     test -e "$source_path/config.h" &&
3852         die "Out of tree builds are impossible with config.h in source dir."
3853 fi
3854
3855 for v in "$@"; do
3856     r=${v#*=}
3857     l=${v%"$r"}
3858     r=$(sh_quote "$r")
3859     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3860 done
3861
3862 find_things_extern(){
3863     thing=$1
3864     pattern=$2
3865     file=$source_path/$3
3866     out=${4:-$thing}
3867     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$out/p" "$file"
3868 }
3869
3870 find_filters_extern(){
3871     file=$source_path/$1
3872     sed -n 's/^extern AVFilter ff_[avfsinkrc]\{2,5\}_\([[:alnum:]_]\{1,\}\);/\1_filter/p' $file
3873 }
3874
3875 FILTER_LIST=$(find_filters_extern libavfilter/allfilters.c)
3876 OUTDEV_LIST=$(find_things_extern muxer AVOutputFormat libavdevice/alldevices.c outdev)
3877 INDEV_LIST=$(find_things_extern demuxer AVInputFormat libavdevice/alldevices.c indev)
3878 MUXER_LIST=$(find_things_extern muxer AVOutputFormat libavformat/allformats.c)
3879 DEMUXER_LIST=$(find_things_extern demuxer AVInputFormat libavformat/allformats.c)
3880 ENCODER_LIST=$(find_things_extern encoder AVCodec libavcodec/allcodecs.c)
3881 DECODER_LIST=$(find_things_extern decoder AVCodec libavcodec/allcodecs.c)
3882 CODEC_LIST="
3883     $ENCODER_LIST
3884     $DECODER_LIST
3885 "
3886 PARSER_LIST=$(find_things_extern parser AVCodecParser libavcodec/parsers.c)
3887 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3888 HWACCEL_LIST=$(find_things_extern hwaccel AVHWAccel libavcodec/hwaccels.h)
3889 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3890
3891 AVCODEC_COMPONENTS_LIST="
3892     $BSF_LIST
3893     $DECODER_LIST
3894     $ENCODER_LIST
3895     $HWACCEL_LIST
3896     $PARSER_LIST
3897 "
3898
3899 AVDEVICE_COMPONENTS_LIST="
3900     $INDEV_LIST
3901     $OUTDEV_LIST
3902 "
3903
3904 AVFILTER_COMPONENTS_LIST="
3905     $FILTER_LIST
3906 "
3907
3908 AVFORMAT_COMPONENTS_LIST="
3909     $DEMUXER_LIST
3910     $MUXER_LIST
3911     $PROTOCOL_LIST
3912 "
3913
3914 ALL_COMPONENTS="
3915     $AVCODEC_COMPONENTS_LIST
3916     $AVDEVICE_COMPONENTS_LIST
3917     $AVFILTER_COMPONENTS_LIST
3918     $AVFORMAT_COMPONENTS_LIST
3919 "
3920
3921 for n in $COMPONENT_LIST; do
3922     v=$(toupper ${n%s})_LIST
3923     eval enable \$$v
3924     eval ${n}_if_any="\$$v"
3925 done
3926
3927 enable $ARCH_EXT_LIST
3928
3929 die_unknown(){
3930     echo "Unknown option \"$1\"."
3931     echo "See $0 --help for available options."
3932     exit 1
3933 }
3934
3935 print_in_columns() {
3936     tr ' ' '\n' | sort | tr '\r\n' '  ' | awk -v col_width=24 -v width="$ncols" '
3937     {
3938         num_cols = width > col_width ? int(width / col_width) : 1;
3939         num_rows = int((NF + num_cols-1) / num_cols);
3940         y = x = 1;
3941         for (y = 1; y <= num_rows; y++) {
3942             i = y;
3943             for (x = 1; x <= num_cols; x++) {
3944                 if (i <= NF) {
3945                   line = sprintf("%s%-" col_width "s", line, $i);
3946                 }
3947                 i = i + num_rows;
3948             }
3949             print line; line = "";
3950         }
3951     }' | sed 's/ *$//'
3952 }
3953
3954 show_list() {
3955     suffix=_$1
3956     shift
3957     echo $* | sed s/$suffix//g | print_in_columns
3958     exit 0
3959 }
3960
3961 rand_list(){
3962     IFS=', '
3963     set -- $*
3964     unset IFS
3965     for thing; do
3966         comp=${thing%:*}
3967         prob=${thing#$comp}
3968         prob=${prob#:}
3969         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3970         echo "prob ${prob:-0.5}"
3971         printf '%s\n' $comp
3972     done
3973 }
3974
3975 do_random(){
3976     action=$1
3977     shift
3978     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3979     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3980 }
3981
3982 for opt do
3983     optval="${opt#*=}"
3984     case "$opt" in
3985         --extra-ldflags=*)
3986             add_ldflags $optval
3987         ;;
3988         --extra-ldexeflags=*)
3989             add_ldexeflags $optval
3990         ;;
3991         --extra-ldsoflags=*)
3992             add_ldsoflags $optval
3993         ;;
3994         --extra-ldlibflags=*)
3995             warn "The --extra-ldlibflags option is only provided for compatibility and will be\n"\
3996                  "removed in the future. Use --extra-ldsoflags instead."
3997             add_ldsoflags $optval
3998         ;;
3999         --extra-libs=*)
4000             add_extralibs $optval
4001         ;;
4002         --disable-devices)
4003             disable $INDEV_LIST $OUTDEV_LIST
4004         ;;
4005         --enable-debug=*)
4006             debuglevel="$optval"
4007         ;;
4008         --disable-programs)
4009             disable $PROGRAM_LIST
4010         ;;
4011         --disable-everything)
4012             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
4013         ;;
4014         --disable-all)
4015             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
4016             disable $LIBRARY_LIST $PROGRAM_LIST doc
4017             enable avutil
4018         ;;
4019         --enable-random|--disable-random)
4020             action=${opt%%-random}
4021             do_random ${action#--} $COMPONENT_LIST
4022         ;;
4023         --enable-random=*|--disable-random=*)
4024             action=${opt%%-random=*}
4025             do_random ${action#--} $optval
4026         ;;
4027         --enable-sdl)
4028             enable sdl2
4029         ;;
4030         --enable-*=*|--disable-*=*)
4031             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
4032             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
4033             eval list=\$$(toupper $thing)_LIST
4034             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
4035             list=$(filter "$name" $list)
4036             [ "$list" = "" ] && warn "Option $opt did not match anything"
4037             test $action = enable && warn_if_gets_disabled $list
4038             $action $list
4039         ;;
4040         --enable-yasm|--disable-yasm)
4041             warn "The ${opt} option is only provided for compatibility and will be\n"\
4042                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
4043             test $opt = --enable-yasm && x86asm=yes || x86asm=no
4044         ;;
4045         --yasmexe=*)
4046             warn "The --yasmexe option is only provided for compatibility and will be\n"\
4047                  "removed in the future. Use --x86asmexe instead."
4048             x86asmexe="$optval"
4049         ;;
4050         --enable-?*|--disable-?*)
4051             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
4052             if is_in $option $COMPONENT_LIST; then
4053                 test $action = disable && action=unset
4054                 eval $action \$$(toupper ${option%s})_LIST
4055             elif is_in $option $CMDLINE_SELECT; then
4056                 $action $option
4057             else
4058                 die_unknown $opt
4059             fi
4060         ;;
4061         --list-*)
4062             NAME="${opt#--list-}"
4063             is_in $NAME $COMPONENT_LIST || die_unknown $opt
4064             NAME=${NAME%s}
4065             eval show_list $NAME \$$(toupper $NAME)_LIST
4066         ;;
4067         --help|-h) show_help
4068         ;;
4069         --quiet|-q) quiet=yes
4070         ;;
4071         --fatal-warnings) enable fatal_warnings
4072         ;;
4073         --libfuzzer=*)
4074             libfuzzer_path="$optval"
4075         ;;
4076         *)
4077             optname="${opt%%=*}"
4078             optname="${optname#--}"
4079             optname=$(echo "$optname" | sed 's/-/_/g')
4080             if is_in $optname $CMDLINE_SET; then
4081                 eval $optname='$optval'
4082             elif is_in $optname $CMDLINE_APPEND; then
4083                 append $optname "$optval"
4084             else
4085                 die_unknown $opt
4086             fi
4087         ;;
4088     esac
4089 done
4090
4091 for e in $env; do
4092     eval "export $e"
4093 done
4094
4095 if disabled autodetect; then
4096
4097     # Unless iconv is explicitely disabled by the user, we still want to probe
4098     # for the iconv from the libc.
4099     disabled iconv || enable libc_iconv
4100
4101     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
4102     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
4103 fi
4104 # Mark specifically enabled, but normally autodetected libraries as requested.
4105 for lib in $AUTODETECT_LIBS; do
4106     enabled $lib && request $lib
4107 done
4108 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
4109 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
4110 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
4111
4112 disabled logging && logfile=/dev/null
4113
4114 # command line configuration sanity checks
4115
4116 # we need to build at least one lib type
4117 if ! enabled_any static shared; then
4118     cat <<EOF
4119 At least one library type must be built.
4120 Specify --enable-static to build the static libraries or --enable-shared to
4121 build the shared libraries as well. To only build the shared libraries specify
4122 --disable-static in addition to --enable-shared.
4123 EOF
4124     exit 1
4125 fi
4126
4127 die_license_disabled() {
4128     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
4129 }
4130
4131 die_license_disabled_gpl() {
4132     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
4133 }
4134
4135 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
4136 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
4137
4138 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
4139 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
4140
4141 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4142
4143 if enabled nonfree; then
4144     license="nonfree and unredistributable"
4145 elif enabled gplv3; then
4146     license="GPL version 3 or later"
4147 elif enabled lgplv3; then
4148     license="LGPL version 3 or later"
4149 elif enabled gpl; then
4150     license="GPL version 2 or later"
4151 else
4152     license="LGPL version 2.1 or later"
4153 fi
4154
4155 enabled_all gnutls openssl &&
4156     die "GnuTLS and OpenSSL must not be enabled at the same time."
4157
4158 enabled_all gnutls mbedtls &&
4159     die "GnuTLS and mbedTLS must not be enabled at the same time."
4160
4161 enabled_all openssl mbedtls &&
4162     die "OpenSSL and mbedTLS must not be enabled at the same time."
4163
4164 # Disable all the library-specific components if the library itself
4165 # is disabled, see AVCODEC_LIST and following _LIST variables.
4166
4167 disable_components(){
4168     disabled ${1} && disable $(
4169         eval components="\$$(toupper ${1})_COMPONENTS"
4170         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
4171     )
4172 }
4173
4174 map 'disable_components $v' $LIBRARY_LIST
4175
4176 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
4177 set >> $logfile
4178
4179 test -n "$valgrind" && toolchain="valgrind-memcheck"
4180
4181 enabled ossfuzz && ! echo $CFLAGS | grep -q -- "-fsanitize="  && ! echo $CFLAGS | grep -q -- "-fcoverage-mapping" &&{
4182     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
4183     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
4184 }
4185
4186 case "$toolchain" in
4187     *-asan)
4188         cc_default="${toolchain%-asan}"
4189         add_cflags  -fsanitize=address
4190         add_ldflags -fsanitize=address
4191     ;;
4192     *-msan)
4193         cc_default="${toolchain%-msan}"
4194         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
4195         add_ldflags -fsanitize=memory
4196     ;;
4197     *-tsan)
4198         cc_default="${toolchain%-tsan}"
4199         add_cflags  -fsanitize=thread
4200         add_ldflags -fsanitize=thread
4201         case "$toolchain" in
4202             gcc-tsan)
4203                 add_cflags  -fPIC
4204                 add_ldflags -fPIC
4205                 ;;
4206         esac
4207     ;;
4208     *-usan)
4209         cc_default="${toolchain%-usan}"
4210         add_cflags  -fsanitize=undefined
4211         add_ldflags -fsanitize=undefined
4212     ;;
4213     valgrind-*)
4214         target_exec_default="valgrind"
4215         case "$toolchain" in
4216             valgrind-massif)
4217                 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"
4218                 ;;
4219             valgrind-memcheck)
4220                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
4221                 ;;
4222         esac
4223     ;;
4224     msvc)
4225         # Check whether the current MSVC version needs the C99 converter.
4226         # From MSVC 2013 (compiler major version 18) onwards, it does actually
4227         # support enough of C99 to build ffmpeg. Default to the new
4228         # behaviour if the regexp was unable to match anything, since this
4229         # successfully parses the version number of existing supported
4230         # versions that require the converter (MSVC 2010 and 2012).
4231         cl_major_ver=$(cl.exe 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
4232         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
4233             cc_default="cl.exe"
4234             cxx_default="cl.exe"
4235         else
4236             die "Unsupported MSVC version (2013 or newer required)"
4237         fi
4238         ld_default="$source_path/compat/windows/mslink"
4239         nm_default="dumpbin.exe -symbols"
4240         ar_default="lib.exe"
4241         case "$arch" in
4242         aarch64|arm64)
4243             as_default="armasm64.exe"
4244             ;;
4245         arm*)
4246             as_default="armasm.exe"
4247             ;;
4248         esac
4249         target_os_default="win32"
4250         # Use a relative path for TMPDIR. This makes sure all the
4251         # ffconf temp files are written with a relative path, avoiding
4252         # issues with msys/win32 path conversion for MSVC parameters
4253         # such as -Fo<file> or -out:<file>.
4254         TMPDIR=.
4255     ;;
4256     icl)
4257         cc_default="icl"
4258         ld_default="xilink"
4259         nm_default="dumpbin -symbols"
4260         ar_default="xilib"
4261         target_os_default="win32"
4262         TMPDIR=.
4263     ;;
4264     gcov)
4265         add_cflags  -fprofile-arcs -ftest-coverage
4266         add_ldflags -fprofile-arcs -ftest-coverage
4267     ;;
4268     llvm-cov)
4269         add_cflags -fprofile-arcs -ftest-coverage
4270         add_ldflags --coverage
4271     ;;
4272     hardened)
4273         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
4274         add_cflags   -fno-strict-overflow -fstack-protector-all
4275         add_ldflags  -Wl,-z,relro -Wl,-z,now
4276         add_cflags   -fPIE
4277         add_ldexeflags -fPIE -pie
4278     ;;
4279     ?*)
4280         die "Unknown toolchain $toolchain"
4281     ;;
4282 esac
4283
4284 if test -n "$cross_prefix"; then
4285     test -n "$arch" && test -n "$target_os" ||
4286         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
4287     enable cross_compile
4288 fi
4289
4290 set_default target_os
4291 if test "$target_os" = android; then
4292     cc_default="clang"
4293 fi
4294
4295 ar_default="${cross_prefix}${ar_default}"
4296 cc_default="${cross_prefix}${cc_default}"
4297 cxx_default="${cross_prefix}${cxx_default}"
4298 nm_default="${cross_prefix}${nm_default}"
4299 pkg_config_default="${cross_prefix}${pkg_config_default}"
4300 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
4301     ranlib_default="${cross_prefix}${ranlib_default} -D"
4302 else
4303     ranlib_default="${cross_prefix}${ranlib_default}"
4304 fi
4305 strip_default="${cross_prefix}${strip_default}"
4306 windres_default="${cross_prefix}${windres_default}"
4307
4308 sysinclude_default="${sysroot}/usr/include"
4309
4310 if enabled cuda_sdk; then
4311     warn "Option --enable-cuda-sdk is deprecated. Use --enable-cuda-nvcc instead."
4312     enable cuda_nvcc
4313 fi
4314
4315 if enabled cuda_nvcc; then
4316     nvcc_default="nvcc"
4317     nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
4318 else
4319     nvcc_default="clang"
4320     nvccflags_default="--cuda-gpu-arch=sm_30 -O2"
4321     NVCC_C=""
4322 fi
4323
4324 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
4325     target_exec x86asmexe nvcc
4326 enabled cross_compile || host_cc_default=$cc
4327 set_default host_cc
4328
4329 pkg_config_fail_message=""
4330 if ! $pkg_config --version >/dev/null 2>&1; then
4331     warn "$pkg_config not found, library detection may fail."
4332     pkg_config=false
4333 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
4334     pkg_config_fail_message="
4335 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
4336 fi
4337
4338 if test $doxygen != $doxygen_default && \
4339   ! $doxygen --version >/dev/null 2>&1; then
4340     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
4341 fi
4342
4343 exesuf() {
4344     case $1 in
4345         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
4346     esac
4347 }
4348
4349 EXESUF=$(exesuf $target_os)
4350 HOSTEXESUF=$(exesuf $host_os)
4351
4352 # set temporary file name
4353 : ${TMPDIR:=$TEMPDIR}
4354 : ${TMPDIR:=$TMP}
4355 : ${TMPDIR:=/tmp}
4356
4357 if [ -n "$tempprefix" ] ; then
4358     mktemp(){
4359         tmpname="$tempprefix.${HOSTNAME}.${UID}"
4360         echo "$tmpname"
4361         mkdir "$tmpname"
4362     }
4363 elif ! test_cmd mktemp -u XXXXXX; then
4364     # simple replacement for missing mktemp
4365     # NOT SAFE FOR GENERAL USE
4366     mktemp(){
4367         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
4368         echo "$tmpname"
4369         mkdir "$tmpname"
4370     }
4371 fi
4372
4373 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
4374     die "Unable to create temporary directory in $TMPDIR."
4375
4376 tmpfile(){
4377     tmp="${FFTMPDIR}/test"$2
4378     (set -C; exec > $tmp) 2> /dev/null ||
4379         die "Unable to create temporary file in $FFTMPDIR."
4380     eval $1=$tmp
4381 }
4382
4383 trap 'rm -rf -- "$FFTMPDIR"' EXIT
4384 trap 'exit 2' INT
4385
4386 tmpfile TMPASM .asm
4387 tmpfile TMPC   .c
4388 tmpfile TMPCPP .cpp
4389 tmpfile TMPE   $EXESUF
4390 tmpfile TMPH   .h
4391 tmpfile TMPM   .m
4392 tmpfile TMPCU  .cu
4393 tmpfile TMPO   .o
4394 tmpfile TMPS   .S
4395 tmpfile TMPSH  .sh
4396 tmpfile TMPV   .ver
4397
4398 unset -f mktemp
4399
4400 chmod +x $TMPE
4401
4402 # make sure we can execute files in $TMPDIR
4403 cat > $TMPSH 2>> $logfile <<EOF
4404 #! /bin/sh
4405 EOF
4406 chmod +x $TMPSH >> $logfile 2>&1
4407 if ! $TMPSH >> $logfile 2>&1; then
4408     cat <<EOF
4409 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
4410 variable to another directory and make sure that it is not mounted noexec.
4411 EOF
4412     die "Sanity test failed."
4413 fi
4414
4415 armasm_flags(){
4416     for flag; do
4417         case $flag in
4418             # Filter out MSVC cl.exe options from cflags that shouldn't
4419             # be passed to gas-preprocessor
4420             -M[TD]*)                                            ;;
4421             *)                  echo $flag                      ;;
4422         esac
4423    done
4424 }
4425
4426 cparser_flags(){
4427     for flag; do
4428         case $flag in
4429             -Wno-switch)             echo -Wno-switch-enum ;;
4430             -Wno-format-zero-length) ;;
4431             -Wdisabled-optimization) ;;
4432             -Wno-pointer-sign)       echo -Wno-other ;;
4433             *)                       echo $flag ;;
4434         esac
4435     done
4436 }
4437
4438 msvc_common_flags(){
4439     for flag; do
4440         case $flag in
4441             # In addition to specifying certain flags under the compiler
4442             # specific filters, they must be specified here as well or else the
4443             # generic catch all at the bottom will print the original flag.
4444             -Wall)                ;;
4445             -Wextra)              ;;
4446             -std=c*)              ;;
4447             # Common flags
4448             -fomit-frame-pointer) ;;
4449             -g)                   echo -Z7 ;;
4450             -fno-math-errno)      ;;
4451             -fno-common)          ;;
4452             -fno-signed-zeros)    ;;
4453             -fPIC)                ;;
4454             -mthumb)              ;;
4455             -march=*)             ;;
4456             -lz)                  echo zlib.lib ;;
4457             -lx264)               echo libx264.lib ;;
4458             -lstdc++)             ;;
4459             -l*)                  echo ${flag#-l}.lib ;;
4460             -LARGEADDRESSAWARE)   echo $flag ;;
4461             -L*)                  echo -libpath:${flag#-L} ;;
4462             -Wl,*)                ;;
4463             *)                    echo $flag ;;
4464         esac
4465     done
4466 }
4467
4468 msvc_flags(){
4469     msvc_common_flags "$@"
4470     for flag; do
4471         case $flag in
4472             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4473                                        -wd4554 ;;
4474             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4475                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4476                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4477                                        -wd4307 \
4478                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4479         esac
4480     done
4481 }
4482
4483 icl_flags(){
4484     msvc_common_flags "$@"
4485     for flag; do
4486         case $flag in
4487             # Despite what Intel's documentation says -Wall, which is supported
4488             # on Windows, does enable remarks so disable them here.
4489             -Wall)                echo $flag -Qdiag-disable:remark ;;
4490             -std=c99)             echo -Qstd=c99 ;;
4491             -flto)                echo -ipo ;;
4492         esac
4493     done
4494 }
4495
4496 icc_flags(){
4497     for flag; do
4498         case $flag in
4499             -flto)                echo -ipo ;;
4500             *)                    echo $flag ;;
4501         esac
4502     done
4503 }
4504
4505 suncc_flags(){
4506     for flag; do
4507         case $flag in
4508             -march=*|-mcpu=*)
4509                 case "${flag#*=}" in
4510                     native)                   echo -xtarget=native       ;;
4511                     v9|niagara)               echo -xarch=sparc          ;;
4512                     ultrasparc)               echo -xarch=sparcvis       ;;
4513                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4514                     i586|pentium)             echo -xchip=pentium        ;;
4515                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4516                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4517                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4518                     pentium4*)          echo -xtarget=pentium4           ;;
4519                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4520                     *-sse3)             echo -xarch=sse3                 ;;
4521                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4522                     bonnell)                   echo -xarch=ssse3         ;;
4523                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4524                     westmere)                  echo -xtarget=westmere    ;;
4525                     silvermont)                echo -xarch=sse4_2        ;;
4526                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4527                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4528                                                echo -xarch=avx           ;;
4529                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4530                     btver1)                    echo -xarch=amdsse4a      ;;
4531                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4532                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4533                     k8|opteron|athlon64|athlon-fx)
4534                                                echo -xarch=sse2a         ;;
4535                     athlon*)                   echo -xarch=pentium_proa  ;;
4536                 esac
4537                 ;;
4538             -std=c99)             echo -xc99              ;;
4539             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4540             -fPIC)                echo -KPIC -xcode=pic32 ;;
4541             -W*,*)                echo $flag              ;;
4542             -f*-*|-W*|-mimpure-text)                      ;;
4543             -shared)              echo -G                 ;;
4544             *)                    echo $flag              ;;
4545         esac
4546     done
4547 }
4548
4549 probe_cc(){
4550     pfx=$1
4551     _cc=$2
4552     first=$3
4553
4554     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4555     unset _ld_o _ldflags _ld_lib _ld_path
4556     unset _depflags _DEPCMD _DEPFLAGS
4557     _flags_filter=echo
4558
4559     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4560         true # no-op to avoid reading stdin in following checks
4561     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4562         _type=llvm_gcc
4563         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4564         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4565         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4566         _cflags_speed='-O3'
4567         _cflags_size='-Os'
4568     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4569         _type=gcc
4570         gcc_version=$($_cc --version | head -n1)
4571         gcc_basever=$($_cc -dumpversion)
4572         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4573         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4574         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4575         case $gcc_basever in
4576             2) ;;
4577             2.*) ;;
4578             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4579         esac
4580         if [ "$first" = true ]; then
4581             case $gcc_basever in
4582                 4.2*)
4583                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4584             esac
4585         fi
4586         _cflags_speed='-O3'
4587         _cflags_size='-Os'
4588     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4589         _type=icc
4590         _ident=$($_cc --version | head -n1)
4591         _depflags='-MMD'
4592         _cflags_speed='-O3'
4593         _cflags_size='-Os'
4594         _cflags_noopt='-O1'
4595         _flags_filter=icc_flags
4596     elif $_cc -v 2>&1 | grep -q xlc; then
4597         _type=xlc
4598         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4599         _cflags_speed='-O5'
4600         _cflags_size='-O5 -qcompact'
4601     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4602         test -d "$sysroot" || die "No valid sysroot specified."
4603         _type=armcc
4604         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4605         armcc_conf="$PWD/armcc.conf"
4606         $_cc --arm_linux_configure                 \
4607              --arm_linux_config_file="$armcc_conf" \
4608              --configure_sysroot="$sysroot"        \
4609              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4610              die "Error creating armcc configuration file."
4611         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4612         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4613         as_default="${cross_prefix}gcc"
4614         _depflags='-MMD'
4615         _cflags_speed='-O3'
4616         _cflags_size='-Os'
4617     elif $_cc -v 2>&1 | grep -q clang && ! $_cc -? > /dev/null 2>&1; then
4618         _type=clang
4619         _ident=$($_cc --version 2>/dev/null | head -n1)
4620         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4621         _cflags_speed='-O3'
4622         _cflags_size='-Oz'
4623     elif $_cc -V 2>&1 | grep -q Sun; then
4624         _type=suncc
4625         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4626         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4627         _DEPFLAGS='-xM1 -xc99'
4628         _ldflags='-std=c99'
4629         _cflags_speed='-O5'
4630         _cflags_size='-O5 -xspace'
4631         _flags_filter=suncc_flags
4632     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4633         _type=pathscale
4634         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4635         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4636         _cflags_speed='-O2'
4637         _cflags_size='-Os'
4638         _flags_filter='filter_out -Wdisabled-optimization'
4639     elif $_cc -v 2>&1 | grep -q Open64; then
4640         _type=open64
4641         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4642         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4643         _cflags_speed='-O2'
4644         _cflags_size='-Os'
4645         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4646     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4647         _type=armasm
4648         _ident=$($_cc | head -n1)
4649         # 4509: "This form of conditional instruction is deprecated"
4650         _flags="-nologo -ignore 4509"
4651         _flags_filter=armasm_flags
4652     elif $_cc 2>&1 | grep -q Intel; then
4653         _type=icl
4654         _ident=$($_cc 2>&1 | head -n1)
4655         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4656         # Not only is O3 broken on 13.x+ but it is slower on all previous
4657         # versions (tested) as well.
4658         _cflags_speed="-O2"
4659         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4660         if $_cc 2>&1 | grep -q Linker; then
4661             _ld_o='-out:$@'
4662         else
4663             _ld_o='-Fe$@'
4664         fi
4665         _cc_o='-Fo$@'
4666         _cc_e='-P'
4667         _flags_filter=icl_flags
4668         _ld_lib='lib%.a'
4669         _ld_path='-libpath:'
4670         # -Qdiag-error to make icl error when seeing certain unknown arguments
4671         _flags='-nologo -Qdiag-error:4044,10157'
4672         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4673         # with MSVC which enables it by default.
4674         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4675         disable stripping
4676     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4677         # lld can emulate multiple different linkers; in ms link.exe mode,
4678         # the -? parameter gives the help output which contains an identifyable
4679         # string, while it gives an error in other modes.
4680         _type=lld-link
4681         # The link.exe mode doesn't have a switch for getting the version,
4682         # but we can force it back to gnu mode and get the version from there.
4683         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4684         _ld_o='-out:$@'
4685         _flags_filter=msvc_flags
4686         _ld_lib='lib%.a'
4687         _ld_path='-libpath:'
4688     elif $_cc -nologo- 2>&1 | grep -q Microsoft || { $_cc -v 2>&1 | grep -q clang && $_cc -? > /dev/null 2>&1; }; then
4689         _type=msvc
4690         if $_cc -nologo- 2>&1 | grep -q Microsoft; then
4691             _ident=$($_cc 2>&1 | head -n1 | tr -d '\r')
4692         else
4693             _ident=$($_cc --version 2>/dev/null | head -n1 | tr -d '\r')
4694         fi
4695         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4696         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4697         _cflags_speed="-O2"
4698         _cflags_size="-O1"
4699         _cflags_noopt="-O1"
4700         if $_cc -nologo- 2>&1 | grep -q Linker; then
4701             _ld_o='-out:$@'
4702         else
4703             _ld_o='-Fe$@'
4704         fi
4705         _cc_o='-Fo$@'
4706         _cc_e='-P -Fi$@'
4707         _flags_filter=msvc_flags
4708         _ld_lib='lib%.a'
4709         _ld_path='-libpath:'
4710         _flags='-nologo'
4711         disable stripping
4712     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4713         _type=cparser
4714         _ident=$($_cc --version | head -n1)
4715         _depflags='-MMD'
4716         _cflags_speed='-O4'
4717         _cflags_size='-O2'
4718         _flags_filter=cparser_flags
4719     fi
4720
4721     eval ${pfx}_type=\$_type
4722     eval ${pfx}_ident=\$_ident
4723 }
4724
4725 set_ccvars(){
4726     eval ${1}_C=\${_cc_c-\${${1}_C}}
4727     eval ${1}_E=\${_cc_e-\${${1}_E}}
4728     eval ${1}_O=\${_cc_o-\${${1}_O}}
4729
4730     if [ -n "$_depflags" ]; then
4731         eval ${1}_DEPFLAGS=\$_depflags
4732     else
4733         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4734         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4735         eval DEP${1}FLAGS=\$_flags
4736     fi
4737 }
4738
4739 probe_cc cc "$cc" "true"
4740 cflags_filter=$_flags_filter
4741 cflags_speed=$_cflags_speed
4742 cflags_size=$_cflags_size
4743 cflags_noopt=$_cflags_noopt
4744 add_cflags $_flags $_cflags
4745 cc_ldflags=$_ldflags
4746 set_ccvars CC
4747 set_ccvars CXX
4748
4749 probe_cc hostcc "$host_cc"
4750 host_cflags_filter=$_flags_filter
4751 host_cflags_speed=$_cflags_speed
4752 add_host_cflags  $_flags $_cflags
4753 set_ccvars HOSTCC
4754
4755 test -n "$cc_type" && enable $cc_type ||
4756     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4757
4758 : ${as_default:=$cc}
4759 : ${objcc_default:=$cc}
4760 : ${dep_cc_default:=$cc}
4761 : ${ld_default:=$cc}
4762 : ${host_ld_default:=$host_cc}
4763 set_default ar as objcc dep_cc ld ln_s host_ld windres
4764
4765 probe_cc as "$as"
4766 asflags_filter=$_flags_filter
4767 add_asflags $_flags $_cflags
4768 set_ccvars AS
4769
4770 probe_cc objcc "$objcc"
4771 objcflags_filter=$_flags_filter
4772 add_objcflags $_flags $_cflags
4773 set_ccvars OBJC
4774
4775 probe_cc ld "$ld"
4776 ldflags_filter=$_flags_filter
4777 add_ldflags $_flags $_ldflags
4778 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4779 LD_O=${_ld_o-$LD_O}
4780 LD_LIB=${_ld_lib-$LD_LIB}
4781 LD_PATH=${_ld_path-$LD_PATH}
4782
4783 probe_cc hostld "$host_ld"
4784 host_ldflags_filter=$_flags_filter
4785 add_host_ldflags $_flags $_ldflags
4786 HOSTLD_O=${_ld_o-$HOSTLD_O}
4787
4788 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4789     probe_cc depcc "$dep_cc"
4790     CCDEP=${_DEPCMD:-$DEPCMD}
4791     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4792     DEPCCFLAGS=$_flags
4793 fi
4794
4795 if $ar 2>&1 | grep -q Microsoft; then
4796     arflags="-nologo"
4797     ar_o='-out:$@'
4798 elif $ar 2>&1 | grep -q "\[D\] "; then
4799     arflags="rcD"
4800     ar_o='$@'
4801 else
4802     arflags="rc"
4803     ar_o='$@'
4804 fi
4805
4806 add_cflags $extra_cflags
4807 add_cxxflags $extra_cxxflags
4808 add_objcflags $extra_objcflags
4809 add_asflags $extra_cflags
4810
4811 if test -n "$sysroot"; then
4812     case "$cc_type" in
4813         gcc|llvm_gcc|clang)
4814             add_cppflags --sysroot="$sysroot"
4815             add_ldflags --sysroot="$sysroot"
4816         ;;
4817     esac
4818 fi
4819
4820 if test "$cpu" = host; then
4821     enabled cross_compile &&
4822         warn "--cpu=host makes no sense when cross-compiling."
4823
4824     case "$cc_type" in
4825         gcc|llvm_gcc)
4826             check_native(){
4827                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4828                 sed -n "/cc1.*$1=/{
4829                             s/.*$1=\\([^ ]*\\).*/\\1/
4830                             p
4831                             q
4832                         }" $TMPE
4833             }
4834             cpu=$(check_native -march || check_native -mcpu)
4835         ;;
4836         clang)
4837             check_native(){
4838                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4839                 sed -n "/cc1.*-target-cpu /{
4840                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4841                             p
4842                             q
4843                         }" $TMPE
4844             }
4845             cpu=$(check_native -march)
4846         ;;
4847     esac
4848
4849     test "${cpu:-host}" = host &&
4850         die "--cpu=host not supported with compiler $cc"
4851 fi
4852
4853 # Deal with common $arch aliases
4854 case "$arch" in
4855     aarch64|arm64)
4856         arch="aarch64"
4857     ;;
4858     arm*|iPad*|iPhone*)
4859         arch="arm"
4860     ;;
4861     mips*|IP*)
4862         case "$arch" in
4863         *el)
4864             add_cppflags -EL
4865             add_ldflags -EL
4866         ;;
4867         *eb)
4868             add_cppflags -EB
4869             add_ldflags -EB
4870         ;;
4871         esac
4872         arch="mips"
4873     ;;
4874     parisc*|hppa*)
4875         arch="parisc"
4876     ;;
4877     "Power Macintosh"|ppc*|powerpc*)
4878         arch="ppc"
4879     ;;
4880     s390|s390x)
4881         arch="s390"
4882     ;;
4883     sh4|sh)
4884         arch="sh4"
4885     ;;
4886     sun4*|sparc*)
4887         arch="sparc"
4888     ;;
4889     tilegx|tile-gx)
4890         arch="tilegx"
4891     ;;
4892     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4893         arch="x86"
4894     ;;
4895 esac
4896
4897 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4898 enable $arch
4899
4900 # Add processor-specific flags
4901 if enabled aarch64; then
4902
4903     case $cpu in
4904         armv*)
4905             cpuflags="-march=$cpu"
4906         ;;
4907         *)
4908             cpuflags="-mcpu=$cpu"
4909         ;;
4910     esac
4911
4912 elif enabled alpha; then
4913
4914     cpuflags="-mcpu=$cpu"
4915
4916 elif enabled arm; then
4917
4918     check_arm_arch() {
4919         test_cpp_condition stddef.h \
4920             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4921             $cpuflags
4922     }
4923
4924     probe_arm_arch() {
4925         if   check_arm_arch 4;        then echo armv4
4926         elif check_arm_arch 4T;       then echo armv4t
4927         elif check_arm_arch 5;        then echo armv5
4928         elif check_arm_arch 5E;       then echo armv5e
4929         elif check_arm_arch 5T;       then echo armv5t
4930         elif check_arm_arch 5TE;      then echo armv5te
4931         elif check_arm_arch 5TEJ;     then echo armv5te
4932         elif check_arm_arch 6;        then echo armv6
4933         elif check_arm_arch 6J;       then echo armv6j
4934         elif check_arm_arch 6K;       then echo armv6k
4935         elif check_arm_arch 6Z;       then echo armv6z
4936         elif check_arm_arch 6KZ;      then echo armv6zk
4937         elif check_arm_arch 6ZK;      then echo armv6zk
4938         elif check_arm_arch 6T2;      then echo armv6t2
4939         elif check_arm_arch 7;        then echo armv7
4940         elif check_arm_arch 7A  7_A;  then echo armv7-a
4941         elif check_arm_arch 7S;       then echo armv7-a
4942         elif check_arm_arch 7R  7_R;  then echo armv7-r
4943         elif check_arm_arch 7M  7_M;  then echo armv7-m
4944         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4945         elif check_arm_arch 8A  8_A;  then echo armv8-a
4946         fi
4947     }
4948
4949     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4950
4951     case $cpu in
4952         armv*)
4953             cpuflags="-march=$cpu"
4954             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4955         ;;
4956         *)
4957             cpuflags="-mcpu=$cpu"
4958             case $cpu in
4959                 cortex-a*)                               subarch=armv7a  ;;
4960                 cortex-r*)                               subarch=armv7r  ;;
4961                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4962                 arm11*)                                  subarch=armv6   ;;
4963                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4964                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4965                 *)                             subarch=$(probe_arm_arch) ;;
4966             esac
4967         ;;
4968     esac
4969
4970     case "$subarch" in
4971         armv5t*)    enable fast_clz                ;;
4972         armv[6-8]*)
4973             enable fast_clz
4974             disabled fast_unaligned || enable fast_unaligned
4975             ;;
4976     esac
4977
4978 elif enabled avr32; then
4979
4980     case $cpu in
4981         ap7[02]0[0-2])
4982             subarch="avr32_ap"
4983             cpuflags="-mpart=$cpu"
4984         ;;
4985         ap)
4986             subarch="avr32_ap"
4987             cpuflags="-march=$cpu"
4988         ;;
4989         uc3[ab]*)
4990             subarch="avr32_uc"
4991             cpuflags="-mcpu=$cpu"
4992         ;;
4993         uc)
4994             subarch="avr32_uc"
4995             cpuflags="-march=$cpu"
4996         ;;
4997     esac
4998
4999 elif enabled bfin; then
5000
5001     cpuflags="-mcpu=$cpu"
5002
5003 elif enabled mips; then
5004
5005     cpuflags="-march=$cpu"
5006
5007     if [ "$cpu" != "generic" ]; then
5008         disable mips32r2
5009         disable mips32r5
5010         disable mips64r2
5011         disable mips32r6
5012         disable mips64r6
5013         disable loongson2
5014         disable loongson3
5015
5016         case $cpu in
5017             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
5018                 enable mips32r2
5019                 disable msa
5020             ;;
5021             p5600|i6400|p6600)
5022                 disable mipsdsp
5023                 disable mipsdspr2
5024             ;;
5025             loongson*)
5026                 enable loongson2
5027                 enable loongson3
5028                 enable local_aligned
5029                 enable simd_align_16
5030                 enable fast_64bit
5031                 enable fast_clz
5032                 enable fast_cmov
5033                 enable fast_unaligned
5034                 disable aligned_stack
5035                 disable mipsdsp
5036                 disable mipsdspr2
5037                 # When gcc version less than 5.3.0, add -fno-expensive-optimizations flag.
5038                 if [ $cc == gcc ]; then
5039                     gcc_version=$(gcc -dumpversion)
5040                     if [ "$(echo "$gcc_version 5.3.0" | tr " " "\n" | sort -rV | head -n 1)" == "$gcc_version" ]; then
5041                         expensive_optimization_flag=""
5042                     else
5043                         expensive_optimization_flag="-fno-expensive-optimizations"
5044                     fi
5045                 fi
5046                 case $cpu in
5047                     loongson3*)
5048                         cpuflags="-march=loongson3a -mhard-float $expensive_optimization_flag"
5049                     ;;
5050                     loongson2e)
5051                         cpuflags="-march=loongson2e -mhard-float $expensive_optimization_flag"
5052                     ;;
5053                     loongson2f)
5054                         cpuflags="-march=loongson2f -mhard-float $expensive_optimization_flag"
5055                     ;;
5056                 esac
5057             ;;
5058             *)
5059                 # Unknown CPU. Disable everything.
5060                 warn "unknown CPU. Disabling all MIPS optimizations."
5061                 disable mipsfpu
5062                 disable mipsdsp
5063                 disable mipsdspr2
5064                 disable msa
5065                 disable mmi
5066             ;;
5067         esac
5068
5069         case $cpu in
5070             24kc)
5071                 disable mipsfpu
5072                 disable mipsdsp
5073                 disable mipsdspr2
5074             ;;
5075             24kf*)
5076                 disable mipsdsp
5077                 disable mipsdspr2
5078             ;;
5079             24kec|34kc|1004kc)
5080                 disable mipsfpu
5081                 disable mipsdspr2
5082             ;;
5083             24kef*|34kf*|1004kf*)
5084                 disable mipsdspr2
5085             ;;
5086             74kc)
5087                 disable mipsfpu
5088             ;;
5089             p5600)
5090                 enable mips32r5
5091                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
5092             ;;
5093             i6400)
5094                 enable mips64r6
5095                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
5096             ;;
5097             p6600)
5098                 enable mips64r6
5099                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
5100             ;;
5101         esac
5102     else
5103         # We do not disable anything. Is up to the user to disable the unwanted features.
5104         warn 'generic cpu selected'
5105     fi
5106
5107 elif enabled ppc; then
5108
5109     disable ldbrx
5110
5111     case $(tolower $cpu) in
5112         601|ppc601|powerpc601)
5113             cpuflags="-mcpu=601"
5114             disable altivec
5115         ;;
5116         603*|ppc603*|powerpc603*)
5117             cpuflags="-mcpu=603"
5118             disable altivec
5119         ;;
5120         604*|ppc604*|powerpc604*)
5121             cpuflags="-mcpu=604"
5122             disable altivec
5123         ;;
5124         g3|75*|ppc75*|powerpc75*)
5125             cpuflags="-mcpu=750"
5126             disable altivec
5127         ;;
5128         g4|745*|ppc745*|powerpc745*)
5129             cpuflags="-mcpu=7450"
5130             disable vsx
5131         ;;
5132         74*|ppc74*|powerpc74*)
5133             cpuflags="-mcpu=7400"
5134             disable vsx
5135         ;;
5136         g5|970|ppc970|powerpc970)
5137             cpuflags="-mcpu=970"
5138             disable vsx
5139         ;;
5140         power[3-6]*)
5141             cpuflags="-mcpu=$cpu"
5142             disable vsx
5143         ;;
5144         power[7-8]*)
5145             cpuflags="-mcpu=$cpu"
5146         ;;
5147         cell)
5148             cpuflags="-mcpu=cell"
5149             enable ldbrx
5150             disable vsx
5151         ;;
5152         e500mc)
5153             cpuflags="-mcpu=e500mc"
5154             disable altivec
5155         ;;
5156         e500v2)
5157             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
5158             disable altivec
5159             disable dcbzl
5160         ;;
5161         e500)
5162             cpuflags="-mcpu=8540 -mhard-float"
5163             disable altivec
5164             disable dcbzl
5165         ;;
5166     esac
5167
5168 elif enabled sparc; then
5169
5170     case $cpu in
5171         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
5172             cpuflags="-mcpu=$cpu"
5173         ;;
5174         ultrasparc*|niagara[234])
5175             cpuflags="-mcpu=$cpu"
5176         ;;
5177     esac
5178
5179 elif enabled x86; then
5180
5181     case $cpu in
5182         i[345]86|pentium)
5183             cpuflags="-march=$cpu"
5184             disable i686
5185             disable mmx
5186         ;;
5187         # targets that do NOT support nopl and conditional mov (cmov)
5188         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
5189             cpuflags="-march=$cpu"
5190             disable i686
5191         ;;
5192         # targets that do support nopl and conditional mov (cmov)
5193         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
5194         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
5195         |amdfam10|barcelona|b[dt]ver*|znver*)
5196             cpuflags="-march=$cpu"
5197             enable i686
5198             enable fast_cmov
5199         ;;
5200         # targets that do support conditional mov but on which it's slow
5201         pentium4|pentium4m|prescott|nocona)
5202             cpuflags="-march=$cpu"
5203             enable i686
5204             disable fast_cmov
5205         ;;
5206     esac
5207
5208 fi
5209
5210 if [ "$cpu" != generic ]; then
5211     add_cflags  $cpuflags
5212     add_asflags $cpuflags
5213     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
5214 fi
5215
5216 # compiler sanity check
5217 test_exec <<EOF
5218 int main(void){ return 0; }
5219 EOF
5220 if test "$?" != 0; then
5221     echo "$cc is unable to create an executable file."
5222     if test -z "$cross_prefix" && ! enabled cross_compile ; then
5223         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
5224         echo "Only do this if you know what cross compiling means."
5225     fi
5226     die "C compiler test failed."
5227 fi
5228
5229 add_cppflags -D_ISOC99_SOURCE
5230 add_cxxflags -D__STDC_CONSTANT_MACROS
5231 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
5232
5233 # some compilers silently accept -std=c11, so we also need to check that the
5234 # version macro is defined properly
5235 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
5236     add_cflags -std=c11 ||
5237     check_cflags -std=c99
5238
5239 check_cppflags -D_FILE_OFFSET_BITS=64
5240 check_cppflags -D_LARGEFILE_SOURCE
5241
5242 add_host_cppflags -D_ISOC99_SOURCE
5243 check_host_cflags -std=c99
5244 check_host_cflags -Wall
5245 check_host_cflags $host_cflags_speed
5246
5247 check_64bit(){
5248     arch32=$1
5249     arch64=$2
5250     expr=${3:-'sizeof(void *) > 4'}
5251     test_code cc "" "int test[2*($expr) - 1]" &&
5252         subarch=$arch64 || subarch=$arch32
5253     enable $subarch
5254 }
5255
5256 case "$arch" in
5257     aarch64|alpha|ia64)
5258         enabled shared && enable_weak pic
5259     ;;
5260     mips)
5261         check_64bit mips mips64 '_MIPS_SIM > 1'
5262         enabled shared && enable_weak pic
5263     ;;
5264     parisc)
5265         check_64bit parisc parisc64
5266         enabled shared && enable_weak pic
5267     ;;
5268     ppc)
5269         check_64bit ppc ppc64
5270         enabled shared && enable_weak pic
5271     ;;
5272     s390)
5273         check_64bit s390 s390x
5274         enabled shared && enable_weak pic
5275     ;;
5276     sparc)
5277         check_64bit sparc sparc64
5278         enabled shared && enable_weak pic
5279     ;;
5280     x86)
5281         check_64bit x86_32 x86_64
5282         # Treat x32 as x64 for now. Note it also needs pic if shared
5283         test "$subarch" = "x86_32" && test_cpp_condition stddef.h 'defined(__x86_64__)' &&
5284             subarch=x86_64 && enable x86_64 && disable x86_32
5285         if enabled x86_64; then
5286             enabled shared && enable_weak pic
5287             objformat=elf64
5288         fi
5289     ;;
5290 esac
5291
5292 # OS specific
5293 case $target_os in
5294     aix)
5295         SHFLAGS=-shared
5296         add_cppflags '-I\$(SRC_PATH)/compat/aix'
5297         enabled shared && add_ldflags -Wl,-brtl
5298         arflags='-Xany -r -c'
5299         striptype=""
5300         ;;
5301     android)
5302         disable symver
5303         enable section_data_rel_ro
5304         add_cflags -fPIE
5305         add_ldexeflags -fPIE -pie
5306         SLIB_INSTALL_NAME='$(SLIBNAME)'
5307         SLIB_INSTALL_LINKS=
5308         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
5309         ;;
5310     haiku)
5311         prefix_default="/boot/common"
5312         network_extralibs="-lnetwork"
5313         host_extralibs=
5314         ;;
5315     sunos)
5316         SHFLAGS='-shared -Wl,-h,$$(@F)'
5317         enabled x86 && append SHFLAGS -mimpure-text
5318         network_extralibs="-lsocket -lnsl"
5319         add_cppflags -D__EXTENSIONS__
5320         # When using suncc to build, the Solaris linker will mark
5321         # an executable with each instruction set encountered by
5322         # the Solaris assembler.  As our libraries contain their own
5323         # guards for processor-specific code, instead suppress
5324         # generation of the HWCAPS ELF section on Solaris x86 only.
5325         enabled_all suncc x86 &&
5326             echo "hwcap_1 = OVERRIDE;" > mapfile &&
5327             add_ldflags -Wl,-M,mapfile
5328         nm_default='nm -P -g'
5329         striptype=""
5330         version_script='-M'
5331         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
5332         ;;
5333     netbsd)
5334         disable symver
5335         oss_indev_extralibs="-lossaudio"
5336         oss_outdev_extralibs="-lossaudio"
5337         enabled gcc || check_ldflags -Wl,-zmuldefs
5338         ;;
5339     openbsd|bitrig)
5340         disable symver
5341         enable section_data_rel_ro
5342         striptype=""
5343         SHFLAGS='-shared'
5344         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
5345         SLIB_INSTALL_LINKS=
5346         oss_indev_extralibs="-lossaudio"
5347         oss_outdev_extralibs="-lossaudio"
5348         ;;
5349     dragonfly)
5350         disable symver
5351         ;;
5352     freebsd)
5353         ;;
5354     bsd/os)
5355         add_extralibs -lpoll -lgnugetopt
5356         strip="strip -d"
5357         ;;
5358     darwin)
5359         enabled ppc && add_asflags -force_cpusubtype_ALL
5360         install_name_dir_default='$(SHLIBDIR)'
5361         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
5362         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
5363         strip="${strip} -x"
5364         add_ldflags -Wl,-dynamic,-search_paths_first
5365         check_cflags -Werror=partial-availability
5366         SLIBSUF=".dylib"
5367         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
5368         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
5369         enabled x86_64 && objformat="macho64" || objformat="macho32"
5370         enabled_any pic shared x86_64 ||
5371             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
5372         check_headers dispatch/dispatch.h &&
5373             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
5374         if test -n "$sysroot"; then
5375             is_in -isysroot $cc $CPPFLAGS $CFLAGS || check_cppflags -isysroot $sysroot
5376             is_in -isysroot $ld $LDFLAGS          || check_ldflags  -isysroot $sysroot
5377         fi
5378         version_script='-exported_symbols_list'
5379         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
5380         # Workaround for Xcode 11 -fstack-check bug
5381         if enabled clang; then
5382             clang_version=$($cc -dumpversion)
5383             test ${clang_version%%.*} -eq 11 && add_cflags -fno-stack-check
5384         fi
5385         ;;
5386     msys*)
5387         die "Native MSYS builds are discouraged, please use the MINGW environment."
5388         ;;
5389     mingw32*|mingw64*)
5390         target_os=mingw32
5391         LIBTARGET=i386
5392         if enabled x86_64; then
5393             LIBTARGET="i386:x86-64"
5394         elif enabled arm; then
5395             LIBTARGET="arm"
5396         elif enabled aarch64; then
5397             LIBTARGET="arm64"
5398         fi
5399         if enabled shared; then
5400             # Cannot build both shared and static libs when using dllimport.
5401             disable static
5402         fi
5403         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5404         enabled x86_32 && check_ldflags -Wl,--large-address-aware
5405         shlibdir_default="$bindir_default"
5406         SLIBPREF=""
5407         SLIBSUF=".dll"
5408         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5409         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5410         if test_cmd lib.exe -list; then
5411             SLIB_EXTRA_CMD=-'lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5412             if enabled x86_64; then
5413                 LIBTARGET=x64
5414             fi
5415         else
5416             SLIB_EXTRA_CMD=-'$(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
5417         fi
5418         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5419         SLIB_INSTALL_LINKS=
5420         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5421         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5422         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" AR="$(AR_CMD)" NM="$(NM_CMD)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5423         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--disable-auto-image-base $$(@:$(SLIBSUF)=.def)'
5424         enabled x86_64 && objformat="win64" || objformat="win32"
5425         dlltool="${cross_prefix}dlltool"
5426         ranlib=:
5427         enable dos_paths
5428         check_ldflags -Wl,--nxcompat,--dynamicbase
5429         # Lets work around some stupidity in binutils.
5430         # ld will strip relocations from executables even though we need them
5431         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
5432         # however ld then forgets what the entry point should be (oops) so we
5433         # have to manually (re)set it.
5434         if enabled x86_32; then
5435             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
5436         elif enabled x86_64; then
5437             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
5438             check_ldflags -Wl,--high-entropy-va # binutils 2.25
5439             # Set image base >4GB for extra entropy with HEASLR
5440             add_ldexeflags -Wl,--image-base,0x140000000
5441             append SHFLAGS -Wl,--image-base,0x180000000
5442         fi
5443         ;;
5444     win32|win64)
5445         disable symver
5446         if enabled shared; then
5447             # Link to the import library instead of the normal static library
5448             # for shared libs.
5449             LD_LIB='%.lib'
5450             # Cannot build both shared and static libs with MSVC or icl.
5451             disable static
5452         fi
5453         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
5454         shlibdir_default="$bindir_default"
5455         SLIBPREF=""
5456         SLIBSUF=".dll"
5457         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5458         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5459         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5460         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5461         SLIB_INSTALL_LINKS=
5462         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5463         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5464         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5465         enabled x86_64 && objformat="win64" || objformat="win32"
5466         ranlib=:
5467         enable dos_paths
5468         ;;
5469     cygwin*)
5470         target_os=cygwin
5471         shlibdir_default="$bindir_default"
5472         SLIBPREF="cyg"
5473         SLIBSUF=".dll"
5474         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5475         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5476         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5477         SLIB_INSTALL_LINKS=
5478         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
5479         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
5480         enabled x86_64 && objformat="win64" || objformat="win32"
5481         enable dos_paths
5482         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5483         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5484         ;;
5485     *-dos|freedos|opendos)
5486         network_extralibs="-lsocket"
5487         objformat="coff"
5488         enable dos_paths
5489         ;;
5490     linux)
5491         enable section_data_rel_ro
5492         enabled_any arm aarch64 && enable_weak linux_perf
5493         ;;
5494     irix*)
5495         target_os=irix
5496         ranlib="echo ignoring ranlib"
5497         ;;
5498     os/2*)
5499         strip="lxlite -CS"
5500         striptype=""
5501         objformat="aout"
5502         add_cppflags -D_GNU_SOURCE
5503         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
5504         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
5505         LIBSUF="_s.a"
5506         SLIBPREF=""
5507         SLIBSUF=".dll"
5508         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5509         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
5510         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
5511             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
5512             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
5513             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
5514             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
5515         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
5516             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
5517         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5518         SLIB_INSTALL_LINKS=
5519         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
5520         enable dos_paths
5521         enable_weak os2threads
5522         ;;
5523     gnu/kfreebsd)
5524         add_cppflags -D_BSD_SOURCE
5525         ;;
5526     gnu)
5527         ;;
5528     qnx)
5529         add_cppflags -D_QNX_SOURCE
5530         network_extralibs="-lsocket"
5531         ;;
5532     symbian)
5533         SLIBSUF=".dll"
5534         enable dos_paths
5535         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
5536         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
5537         add_ldflags -Wl,--target1-abs,--no-undefined \
5538                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
5539                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
5540         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
5541                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
5542                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
5543         ;;
5544     minix)
5545         ;;
5546     none)
5547         ;;
5548     *)
5549         die "Unknown OS '$target_os'."
5550         ;;
5551 esac
5552
5553 # test if creating links works
5554 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5555 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5556 mkdir "$link_dest"
5557 $ln_s "$link_dest" "$link_name"
5558 touch "$link_dest/test_file"
5559 if [ "$source_path" != "." ] && [ "$source_path" != "src" ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5560     # create link to source path
5561     [ -e src ] && rm src
5562     $ln_s "$source_path" src
5563     source_link=src
5564 else
5565     # creating directory links doesn't work
5566     # fall back to using the full source path
5567     source_link="$source_path"
5568 fi
5569 # cleanup
5570 rm -r "$link_dest"
5571 rm -r "$link_name"
5572
5573 # determine libc flavour
5574
5575 probe_libc(){
5576     pfx=$1
5577     pfx_no_=${pfx%_}
5578     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5579     if test_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5580         eval ${pfx}libc_type=uclibc
5581         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5582     elif test_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5583         eval ${pfx}libc_type=glibc
5584         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5585     # MinGW headers can be installed on Cygwin, so check for newlib first.
5586     elif test_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5587         eval ${pfx}libc_type=newlib
5588         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
5589     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5590     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5591         eval ${pfx}libc_type=mingw64
5592         if test_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5593             add_compat msvcrt/snprintf.o
5594             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5595         fi
5596         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5597         eval test \$${pfx_no_}cc_type = "gcc" &&
5598             add_${pfx}cppflags -D__printf__=__gnu_printf__
5599         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5600             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5601         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5602     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5603          test_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5604         eval ${pfx}libc_type=mingw32
5605         test_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5606             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5607             die "ERROR: MinGW32 runtime version must be >= 3.15."
5608         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5609         test_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
5610             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5611         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5612             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5613         eval test \$${pfx_no_}cc_type = "gcc" &&
5614             add_${pfx}cppflags -D__printf__=__gnu_printf__
5615         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5616     elif test_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5617         eval ${pfx}libc_type=msvcrt
5618         if test_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5619             if [ "$pfx" = host_ ]; then
5620                 add_host_cppflags -Dsnprintf=_snprintf
5621             else
5622                 add_compat strtod.o strtod=avpriv_strtod
5623                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5624                                              _snprintf=avpriv_snprintf  \
5625                                              vsnprintf=avpriv_vsnprintf
5626             fi
5627         fi
5628         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5629         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5630         # 0x601 by default unless something else is set by the user.
5631         # This can easily lead to us detecting functions only present
5632         # in such new versions and producing binaries requiring windows 7.0.
5633         # Therefore explicitly set the default to Vista unless the user has
5634         # set something else on the command line.
5635         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5636         # family. For these cases, configure is free to use any functions
5637         # found in the SDK headers by default. (Alternatively, we could force
5638         # _WIN32_WINNT to 0x0602 in that case.)
5639         test_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5640             { test_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0600; }
5641 #ifdef WINAPI_FAMILY
5642 #include <winapifamily.h>
5643 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5644 #error not desktop
5645 #endif
5646 #endif
5647 EOF
5648         if [ "$pfx" = "" ]; then
5649             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5650             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5651         fi
5652     elif test_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5653         eval ${pfx}libc_type=klibc
5654     elif test_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5655         eval ${pfx}libc_type=bionic
5656     elif test_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5657         eval ${pfx}libc_type=solaris
5658         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5659     elif test_${pfx}cpp_condition sys/version.h "defined __DJGPP__"; then
5660         eval ${pfx}libc_type=djgpp
5661         add_cppflags -U__STRICT_ANSI__
5662         add_cflags "-include $source_path/compat/djgpp/math.h"
5663         add_compat djgpp/math.o
5664     fi
5665     test_${pfx}cc <<EOF
5666 #include <time.h>
5667 void *v = localtime_r;
5668 EOF
5669 test "$?" != 0 && test_${pfx}cc -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 <<EOF && add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5670 #include <time.h>
5671 void *v = localtime_r;
5672 EOF
5673
5674     eval test -n "\${${pfx}libc_type}" && enable ${pfx}libc_${libc_type}
5675 }
5676
5677 probe_libc
5678 probe_libc host_
5679
5680 # hacks for compiler/libc/os combinations
5681
5682 case $libc_type in
5683     bionic)
5684         add_compat strtod.o strtod=avpriv_strtod
5685         ;;
5686 esac
5687
5688 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5689     add_cppflags '-I\$(SRC_PATH)/compat/float'
5690
5691 test_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5692
5693 set_default libdir
5694 : ${shlibdir_default:="$libdir"}
5695 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5696
5697 set_default $PATHS_LIST
5698 set_default nm
5699
5700 disabled optimizations || enabled ossfuzz || check_cflags -fomit-frame-pointer
5701
5702 enable_weak_pic() {
5703     disabled pic && return
5704     enable pic
5705     add_cppflags -DPIC
5706     case "$target_os" in
5707     mingw*|cygwin*|win*)
5708         ;;
5709     *)
5710         add_cflags -fPIC
5711         add_asflags -fPIC
5712         ;;
5713     esac
5714 }
5715
5716 enabled pic && enable_weak_pic
5717
5718 test_cc <<EOF || die "Symbol mangling check failed."
5719 int ff_extern;
5720 EOF
5721 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5722 extern_prefix=${sym%%ff_extern*}
5723
5724 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
5725
5726 for restrict_keyword in restrict __restrict__ __restrict ""; do
5727     test_code cc "" "char * $restrict_keyword p" && break
5728 done
5729
5730 check_cc pragma_deprecated "" '_Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"")'
5731
5732 # The global variable ensures the bits appear unchanged in the object file.
5733 test_cc <<EOF || die "endian test failed"
5734 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5735 EOF
5736 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5737
5738 check_cc const_nan math.h "struct { double d; } static const bar[] = { { NAN } }"
5739
5740 if ! enabled ppc64 || enabled bigendian; then
5741     disable vsx
5742 fi
5743
5744 check_gas() {
5745     log "check_gas using '$as' as AS"
5746     # :vararg is used on aarch64, arm and ppc altivec
5747     check_as vararg "
5748 .macro m n, y:vararg=0
5749 \n: .int \y
5750 .endm
5751 m x" || return 1
5752     # .altmacro is only used in arm asm
5753     ! enabled arm || check_as gnu_as ".altmacro"
5754 }
5755
5756 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5757     nogas=:
5758     enabled_any arm aarch64 && nogas=die
5759     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5760     as_noop=-v
5761
5762     case $as_type in
5763         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5764         gcc)  gaspp_as_type=gas ;;
5765         *)    gaspp_as_type=$as_type ;;
5766     esac
5767
5768     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5769
5770     test "${as#*gas-preprocessor.pl}" != "$as" ||
5771     test_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5772         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5773
5774     if ! check_gas ; then
5775         as=${gas:=$as}
5776         check_gas || \
5777             $nogas "GNU assembler not found, install/update gas-preprocessor"
5778     fi
5779
5780     check_as as_func ".func test
5781                       .endfunc"
5782 fi
5783
5784 check_inline_asm inline_asm_labels '"1:\n"'
5785
5786 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5787
5788 if enabled aarch64; then
5789     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5790     # internal assembler in clang 3.3 does not support this instruction
5791     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5792     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5793
5794     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5795
5796 elif enabled alpha; then
5797
5798     check_cflags -mieee
5799
5800 elif enabled arm; then
5801
5802     enabled msvc && check_cpp_condition thumb stddef.h "defined _M_ARMT"
5803     test_cpp_condition stddef.h "defined __thumb__" && test_cc <<EOF && enable_weak thumb
5804 float func(float a, float b){ return a+b; }
5805 EOF
5806     enabled thumb && check_cflags -mthumb || check_cflags -marm
5807
5808     if check_cpp_condition vfp_args stddef.h "defined __ARM_PCS_VFP"; then
5809         :
5810     elif check_cpp_condition vfp_args stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5811         :
5812     elif ! test_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5813         case "${cross_prefix:-$cc}" in
5814             *hardfloat*) enable vfp_args; fpabi=vfp ;;
5815             *) check_ld "cc" vfp_args <<EOF && fpabi=vfp || fpabi=soft ;;
5816 __asm__ (".eabi_attribute 28, 1");
5817 int main(void) { return 0; }
5818 EOF
5819         esac
5820         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5821     fi
5822
5823     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5824     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5825     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5826     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5827     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5828     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5829     enabled setend  && check_insn setend  'setend be'
5830
5831     [ $target_os = linux ] || [ $target_os = android ] ||
5832         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5833             $ARCH_EXT_LIST_ARM
5834
5835     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5836
5837     check_as as_arch_directive ".arch armv7-a"
5838     check_as as_dn_directive   "ra .dn d0.i16"
5839     check_as as_fpu_directive  ".fpu neon"
5840
5841     # llvm's integrated assembler supports .object_arch from llvm 3.5
5842     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
5843         check_as as_object_arch ".object_arch armv4"
5844
5845     # MS armasm fails to assemble our PIC constructs
5846     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5847
5848 elif enabled mips; then
5849
5850     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5851     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5852     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5853
5854     # Enable minimum ISA based on selected options
5855     if enabled mips64; then
5856         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5857         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5858         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5859     else
5860         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5861         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5862         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5863         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5864     fi
5865
5866     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5867     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5868     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_headers msa.h || disable msa
5869     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5870     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5871     enabled msa && enabled msa2 && check_inline_asm_flags msa2 '"nxbits.any.b $w0, $w0"' '-mmsa2' && check_headers msa2.h || disable msa2
5872
5873     if enabled bigendian && enabled msa; then
5874         disable msa
5875     fi
5876
5877 elif enabled parisc; then
5878
5879     if enabled gcc; then
5880         case $($cc -dumpversion) in
5881             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5882         esac
5883     fi
5884
5885 elif enabled ppc; then
5886
5887     enable local_aligned
5888
5889     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5890     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5891     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5892     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5893
5894     if enabled altivec; then
5895         check_cflags -maltivec -mabi=altivec
5896
5897         # check if our compiler supports Motorola AltiVec C API
5898         check_cc altivec altivec.h "vector signed int v1 = (vector signed int) { 0 };
5899                                     vector signed int v2 = (vector signed int) { 1 };
5900                                     v1 = vec_add(v1, v2);"
5901
5902         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5903     fi
5904
5905     if enabled vsx; then
5906         check_cflags -mvsx &&
5907         check_cc vsx altivec.h "int v[4] = { 0 };
5908                                 vector signed int v1 = vec_vsx_ld(0, v);"
5909     fi
5910
5911     if enabled power8; then
5912         check_cpp_condition power8 "altivec.h" "defined(_ARCH_PWR8)"
5913     fi
5914
5915 elif enabled x86; then
5916
5917     check_builtin rdtsc    intrin.h   "__rdtsc()"
5918     check_builtin mm_empty mmintrin.h "_mm_empty()"
5919
5920     enable local_aligned
5921
5922     # check whether EBP is available on x86
5923     # As 'i' is stored on the stack, this program will crash
5924     # if the base pointer is used to access it because the
5925     # base pointer is cleared in the inline assembly code.
5926     check_exec_crash <<EOF && enable ebp_available
5927 volatile int i=0;
5928 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5929 return i;
5930 EOF
5931
5932     # check whether EBX is available on x86
5933     check_inline_asm ebx_available '""::"b"(0)' &&
5934         check_inline_asm ebx_available '"":::"%ebx"'
5935
5936     # check whether xmm clobbers are supported
5937     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5938
5939     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5940         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5941
5942     # check whether binutils is new enough to compile SSSE3/MMXEXT
5943     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5944     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5945
5946     probe_x86asm(){
5947         x86asmexe_probe=$1
5948         if test_cmd $x86asmexe_probe -v; then
5949             x86asmexe=$x86asmexe_probe
5950             x86asm_type=nasm
5951             x86asm_debug="-g -F dwarf"
5952             X86ASMDEP=
5953             X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
5954         elif test_cmd $x86asmexe_probe --version; then
5955             x86asmexe=$x86asmexe_probe
5956             x86asm_type=yasm
5957             x86asm_debug="-g dwarf2"
5958             X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
5959             X86ASM_DEPFLAGS=
5960         fi
5961         check_x86asm x86asm "movbe ecx, [5]"
5962     }
5963
5964     if ! disabled_any asm mmx x86asm; then
5965         disable x86asm
5966         for program in $x86asmexe nasm yasm; do
5967             probe_x86asm $program && break
5968         done
5969         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
5970         X86ASMFLAGS="-f $objformat"
5971         enabled pic               && append X86ASMFLAGS "-DPIC"
5972         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
5973         case "$objformat" in
5974             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
5975         esac
5976
5977         enabled avx512 && check_x86asm avx512_external "vmovdqa32 [eax]{k1}{z}, zmm0"
5978         enabled avx2   && check_x86asm avx2_external   "vextracti128 xmm0, ymm0, 0"
5979         enabled xop    && check_x86asm xop_external    "vpmacsdd xmm0, xmm1, xmm2, xmm3"
5980         enabled fma4   && check_x86asm fma4_external   "vfmaddps ymm0, ymm1, ymm2, ymm3"
5981         check_x86asm cpunop          "CPU amdnop"
5982     fi
5983
5984     case "$cpu" in
5985         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5986             disable fast_clz
5987         ;;
5988     esac
5989
5990 fi
5991
5992 check_cc intrinsics_neon arm_neon.h "int16x8_t test = vdupq_n_s16(0)"
5993
5994 check_ldflags -Wl,--as-needed
5995 check_ldflags -Wl,-z,noexecstack
5996
5997 if ! disabled network; then
5998     check_func getaddrinfo $network_extralibs
5999     check_func inet_aton $network_extralibs
6000
6001     check_type netdb.h "struct addrinfo"
6002     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
6003     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
6004     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
6005     check_type poll.h "struct pollfd"
6006     check_type netinet/sctp.h "struct sctp_event_subscribe"
6007     check_struct "sys/socket.h" "struct msghdr" msg_flags
6008     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
6009     check_type netinet/in.h "struct sockaddr_in6"
6010     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
6011     check_type "sys/types.h sys/socket.h" socklen_t
6012
6013     # Prefer arpa/inet.h over winsock2
6014     if check_headers arpa/inet.h ; then
6015         check_func closesocket
6016     elif check_headers winsock2.h ; then
6017         check_func_headers winsock2.h closesocket -lws2 &&
6018             network_extralibs="-lws2" ||
6019         { check_func_headers winsock2.h closesocket -lws2_32 &&
6020             network_extralibs="-lws2_32"; } || disable winsock2_h network
6021         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
6022
6023         check_type ws2tcpip.h socklen_t
6024         check_type ws2tcpip.h "struct addrinfo"
6025         check_type ws2tcpip.h "struct group_source_req"
6026         check_type ws2tcpip.h "struct ip_mreq_source"
6027         check_type ws2tcpip.h "struct ipv6_mreq"
6028         check_type winsock2.h "struct pollfd"
6029         check_struct winsock2.h "struct sockaddr" sa_len
6030         check_type ws2tcpip.h "struct sockaddr_in6"
6031         check_type ws2tcpip.h "struct sockaddr_storage"
6032     else
6033         disable network
6034     fi
6035 fi
6036
6037 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
6038 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
6039 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
6040 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
6041 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
6042 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
6043 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
6044
6045 case "$custom_allocator" in
6046     jemalloc)
6047         # jemalloc by default does not use a prefix
6048         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
6049     ;;
6050     tcmalloc)
6051         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
6052         malloc_prefix=tc_
6053     ;;
6054 esac
6055
6056 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
6057 check_func  ${malloc_prefix}memalign            && enable memalign
6058 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
6059
6060 check_func  access
6061 check_func_headers stdlib.h arc4random
6062 check_lib   clock_gettime time.h clock_gettime || check_lib clock_gettime time.h clock_gettime -lrt
6063 check_func  fcntl
6064 check_func  fork
6065 check_func  gethrtime
6066 check_func  getopt
6067 check_func  getrusage
6068 check_func  gettimeofday
6069 check_func  isatty
6070 check_func  mkstemp
6071 check_func  mmap
6072 check_func  mprotect
6073 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
6074 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
6075 check_func  sched_getaffinity
6076 check_func  setrlimit
6077 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
6078 check_func  strerror_r
6079 check_func  sysconf
6080 check_func  sysctl
6081 check_func  usleep
6082
6083 check_func_headers conio.h kbhit
6084 check_func_headers io.h setmode
6085 check_func_headers lzo/lzo1x.h lzo1x_999_compress
6086 check_func_headers mach/mach_time.h mach_absolute_time
6087 check_func_headers stdlib.h getenv
6088 check_func_headers sys/stat.h lstat
6089
6090 check_func_headers windows.h GetModuleHandle
6091 check_func_headers windows.h GetProcessAffinityMask
6092 check_func_headers windows.h GetProcessTimes
6093 check_func_headers windows.h GetStdHandle
6094 check_func_headers windows.h GetSystemTimeAsFileTime
6095 check_func_headers windows.h LoadLibrary
6096 check_func_headers windows.h MapViewOfFile
6097 check_func_headers windows.h PeekNamedPipe
6098 check_func_headers windows.h SetConsoleTextAttribute
6099 check_func_headers windows.h SetConsoleCtrlHandler
6100 check_func_headers windows.h SetDllDirectory
6101 check_func_headers windows.h Sleep
6102 check_func_headers windows.h VirtualAlloc
6103 check_func_headers glob.h glob
6104 enabled xlib &&
6105     check_lib xlib "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
6106
6107 check_headers direct.h
6108 check_headers dirent.h
6109 check_headers dxgidebug.h
6110 check_headers dxva.h
6111 check_headers dxva2api.h -D_WIN32_WINNT=0x0600
6112 check_headers io.h
6113 check_headers linux/perf_event.h
6114 check_headers libcrystalhd/libcrystalhd_if.h
6115 check_headers malloc.h
6116 check_headers mftransform.h
6117 check_headers net/udplite.h
6118 check_headers poll.h
6119 check_headers sys/param.h
6120 check_headers sys/resource.h
6121 check_headers sys/select.h
6122 check_headers sys/time.h
6123 check_headers sys/un.h
6124 check_headers termios.h
6125 check_headers unistd.h
6126 check_headers valgrind/valgrind.h
6127 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
6128 check_headers windows.h
6129 check_headers X11/extensions/XvMClib.h
6130 check_headers asm/types.h
6131
6132 # it seems there are versions of clang in some distros that try to use the
6133 # gcc headers, which explodes for stdatomic
6134 # so we also check that atomics actually work here
6135 check_builtin stdatomic stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0); foo += bar"
6136
6137 check_lib advapi32 "windows.h"            RegCloseKey          -ladvapi32
6138 check_lib bcrypt   "windows.h bcrypt.h"   BCryptGenRandom      -lbcrypt &&
6139     check_cpp_condition bcrypt bcrypt.h "defined BCRYPT_RNG_ALGORITHM"
6140 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
6141 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
6142 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
6143
6144 check_lib android android/native_window.h ANativeWindow_acquire -landroid
6145 check_lib mediandk "stdint.h media/NdkImage.h" AImage_delete -lmediandk
6146 check_lib camera2ndk "stdbool.h stdint.h camera/NdkCameraManager.h" ACameraManager_create -lcamera2ndk
6147
6148 enabled appkit       && check_apple_framework AppKit
6149 enabled audiotoolbox && check_apple_framework AudioToolbox
6150 enabled avfoundation && check_apple_framework AVFoundation
6151 enabled coreimage    && check_apple_framework CoreImage
6152 enabled videotoolbox && check_apple_framework VideoToolbox
6153
6154 check_apple_framework CoreFoundation
6155 check_apple_framework CoreMedia
6156 check_apple_framework CoreVideo
6157 check_apple_framework CoreAudio
6158
6159 enabled avfoundation && {
6160     disable coregraphics applicationservices
6161     check_lib coregraphics        CoreGraphics/CoreGraphics.h               CGGetActiveDisplayList "-framework CoreGraphics" ||
6162     check_lib applicationservices ApplicationServices/ApplicationServices.h CGGetActiveDisplayList "-framework ApplicationServices"; }
6163
6164 enabled videotoolbox && {
6165     check_lib coreservices CoreServices/CoreServices.h UTGetOSTypeFromString "-framework CoreServices"
6166     check_func_headers CoreMedia/CMFormatDescription.h kCMVideoCodecType_HEVC "-framework CoreMedia"
6167     check_func_headers CoreVideo/CVPixelBuffer.h kCVPixelFormatType_420YpCbCr10BiPlanarVideoRange "-framework CoreVideo"
6168     check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferTransferFunction_SMPTE_ST_2084_PQ "-framework CoreVideo"
6169     check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferTransferFunction_ITU_R_2100_HLG "-framework CoreVideo"
6170     check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferTransferFunction_Linear "-framework CoreVideo"
6171 }
6172
6173 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
6174
6175 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
6176 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
6177 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
6178 check_type "windows.h d3d11.h" "ID3D11VideoContext"
6179 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
6180 check_func_headers mfapi.h MFCreateAlignedMemoryBuffer -lmfplat
6181
6182 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
6183 check_type "vdpau/vdpau.h" "VdpPictureInfoVP9"
6184
6185 if [ -z "$nvccflags" ]; then
6186     nvccflags=$nvccflags_default
6187 fi
6188
6189 if enabled x86_64 || enabled ppc64 || enabled aarch64; then
6190     nvccflags="$nvccflags -m64"
6191 else
6192     nvccflags="$nvccflags -m32"
6193 fi
6194
6195 if enabled cuda_nvcc; then
6196     nvccflags="$nvccflags -ptx"
6197 else
6198     nvccflags="$nvccflags -S -nocudalib -nocudainc --cuda-device-only -include ${source_link}/compat/cuda/cuda_runtime.h"
6199     check_nvcc cuda_llvm
6200 fi
6201
6202 if ! disabled ffnvcodec; then
6203     ffnv_hdr_list="ffnvcodec/nvEncodeAPI.h ffnvcodec/dynlink_cuda.h ffnvcodec/dynlink_cuviddec.h ffnvcodec/dynlink_nvcuvid.h"
6204     check_pkg_config ffnvcodec "ffnvcodec >= 9.1.23.1" "$ffnv_hdr_list" "" || \
6205       check_pkg_config ffnvcodec "ffnvcodec >= 9.0.18.3 ffnvcodec < 9.1" "$ffnv_hdr_list" "" || \
6206       check_pkg_config ffnvcodec "ffnvcodec >= 8.2.15.10 ffnvcodec < 8.3" "$ffnv_hdr_list" "" || \
6207       check_pkg_config ffnvcodec "ffnvcodec >= 8.1.24.11 ffnvcodec < 8.2" "$ffnv_hdr_list" ""
6208 fi
6209
6210 check_cpp_condition winrt windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)"
6211
6212 if ! disabled w32threads && ! enabled pthreads; then
6213     check_func_headers "windows.h process.h" _beginthreadex &&
6214         check_type "windows.h" CONDITION_VARIABLE &&
6215         check_type "windows.h" INIT_ONCE &&
6216         enable w32threads || disable w32threads
6217     if ! enabled w32threads && enabled winrt; then
6218         check_func_headers "windows.h" CreateThread &&
6219             enable w32threads || disable w32threads
6220     fi
6221 fi
6222
6223 # check for some common methods of building with pthread support
6224 # do this before the optional library checks as some of them require pthreads
6225 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
6226     if check_lib pthreads pthread.h pthread_join   -pthread &&
6227        check_lib pthreads pthread.h pthread_create -pthread; then
6228         add_cflags -pthread
6229     elif check_lib pthreads pthread.h pthread_join   -pthreads &&
6230          check_lib pthreads pthread.h pthread_create -pthreads; then
6231         add_cflags -pthreads
6232     elif check_lib pthreads pthread.h pthread_join   -ldl -pthread &&
6233          check_lib pthreads pthread.h pthread_create -ldl -pthread; then
6234         add_cflags -ldl -pthread
6235     elif check_lib pthreads pthread.h pthread_join   -lpthreadGC2 &&
6236          check_lib pthreads pthread.h pthread_create -lpthreadGC2; then
6237         :
6238     elif check_lib pthreads pthread.h pthread_join   -lpthread &&
6239          check_lib pthreads pthread.h pthread_create -lpthread; then
6240         :
6241     elif check_func pthread_join && check_func pthread_create; then
6242         enable pthreads
6243     fi
6244     check_cc pthreads "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER"
6245
6246     if enabled pthreads; then
6247         check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
6248         check_func pthread_cancel $pthreads_extralibs
6249     fi
6250 fi
6251
6252 enabled  zlib && { check_pkg_config zlib zlib "zlib.h" zlibVersion ||
6253                    check_lib zlib   zlib.h      zlibVersion    -lz; }
6254 enabled bzlib && check_lib bzlib bzlib.h BZ2_bzlibVersion    -lbz2
6255 enabled  lzma && check_lib lzma   lzma.h lzma_version_number -llzma
6256
6257 # On some systems dynamic loading requires no extra linker flags
6258 check_lib libdl dlfcn.h "dlopen dlsym" || check_lib libdl dlfcn.h "dlopen dlsym" -ldl
6259
6260 check_lib libm math.h sin -lm
6261
6262 atan2f_args=2
6263 copysign_args=2
6264 hypot_args=2
6265 ldexpf_args=2
6266 powf_args=2
6267
6268 for func in $MATH_FUNCS; do
6269     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
6270 done
6271
6272 for func in $COMPLEX_FUNCS; do
6273     eval check_complexfunc $func \${${func}_args:-1}
6274 done
6275
6276 # these are off by default, so fail if requested and not available
6277 enabled avisynth          && require_headers "avisynth/avisynth_c.h"
6278 enabled cuda_nvcc         && { check_nvcc cuda_nvcc || die "ERROR: failed checking for nvcc."; }
6279 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
6280 enabled decklink          && { require_headers DeckLinkAPI.h &&
6281                                { test_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a090500" || die "ERROR: Decklink API version must be >= 10.9.5."; } }
6282 enabled frei0r            && require_headers "frei0r.h dlfcn.h"
6283 enabled gmp               && require gmp gmp.h mpz_export -lgmp
6284 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init
6285 enabled jni               && { [ $target_os = "android" ] && check_headers jni.h && enabled pthreads || die "ERROR: jni not found"; }
6286 enabled ladspa            && require_headers "ladspa.h dlfcn.h"
6287 enabled libaom            && require_pkg_config libaom "aom >= 1.0.0" aom/aom_codec.h aom_codec_version
6288 enabled libaribb24        && { check_pkg_config libaribb24 "aribb24 > 1.0.3" "aribb24/aribb24.h" arib_instance_new ||
6289                                { enabled gpl && require_pkg_config libaribb24 aribb24 "aribb24/aribb24.h" arib_instance_new; } ||
6290                                die "ERROR: libaribb24 requires version higher than 1.0.3 or --enable-gpl."; }
6291 enabled lv2               && require_pkg_config lv2 lilv-0 "lilv/lilv.h" lilv_world_new
6292 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
6293 enabled libass            && require_pkg_config libass libass ass/ass.h ass_library_init
6294 enabled libbluray         && require_pkg_config libbluray libbluray libbluray/bluray.h bd_open
6295 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
6296 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
6297                              { check_lib libcelt celt/celt.h celt_decoder_create_custom -lcelt0 ||
6298                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
6299 enabled libcaca           && require_pkg_config libcaca caca caca.h caca_create_canvas
6300 enabled libcodec2         && require libcodec2 codec2/codec2.h codec2_create -lcodec2
6301 enabled libdav1d          && require_pkg_config libdav1d "dav1d >= 0.4.0" "dav1d/dav1d.h" dav1d_version
6302 enabled libdavs2          && require_pkg_config libdavs2 "davs2 >= 1.6.0" davs2.h davs2_decoder_open
6303 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
6304 enabled libdrm            && require_pkg_config libdrm libdrm xf86drm.h drmGetVersion
6305 enabled libfdk_aac        && { check_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
6306                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
6307                                  warn "using libfdk without pkg-config"; } }
6308 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"
6309 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_extralibs
6310 enabled fontconfig        && enable libfontconfig
6311 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
6312 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
6313 enabled libfribidi        && require_pkg_config libfribidi fribidi fribidi.h fribidi_version_info
6314 enabled libglslang        && require_cpp libglslang glslang/SPIRV/GlslangToSpv.h "glslang::TIntermediate*" -lglslang -lOSDependent -lHLSL -lOGLCompiler -lSPVRemapper -lSPIRV -lSPIRV-Tools-opt -lSPIRV-Tools -lpthread -lstdc++
6315 enabled libgme            && { check_pkg_config libgme libgme gme/gme.h gme_new_emu ||
6316                                require libgme gme/gme.h gme_new_emu -lgme -lstdc++; }
6317 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
6318                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
6319                                done || die "ERROR: libgsm not found"; }
6320 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc $pthreads_extralibs
6321 enabled libklvanc         && require libklvanc libklvanc/vanc.h klvanc_context_create -lklvanc
6322 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
6323 enabled liblensfun        && require_pkg_config liblensfun lensfun lensfun.h lf_db_new
6324 # While it may appear that require is being used as a pkg-config
6325 # fallback for libmfx, it is actually being used to detect a different
6326 # installation route altogether.  If libmfx is installed via the Intel
6327 # Media SDK or Intel Media Server Studio, these don't come with
6328 # pkg-config support.  Instead, users should make sure that the build
6329 # can find the libraries and headers through other means.
6330 enabled libmfx            && { check_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit ||
6331                                { require libmfx "mfx/mfxvideo.h" MFXInit "-llibmfx $advapi32_extralibs" && warn "using libmfx without pkg-config"; } }
6332 if enabled libmfx; then
6333    check_cc MFX_CODEC_VP9 "mfx/mfxvp9.h mfx/mfxstructures.h" "MFX_CODEC_VP9"
6334 fi
6335
6336 enabled libmodplug        && require_pkg_config libmodplug libmodplug libmodplug/modplug.h ModPlug_Load
6337 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame $libm_extralibs
6338 enabled libmysofa         && { check_pkg_config libmysofa libmysofa mysofa.h mysofa_neighborhood_init_withstepdefine ||
6339                                require libmysofa mysofa.h mysofa_neighborhood_init_withstepdefine -lmysofa $zlib_extralibs; }
6340 enabled libnpp            && { check_lib libnpp npp.h nppGetLibVersion -lnppig -lnppicc -lnppc -lnppidei ||
6341                                check_lib libnpp npp.h nppGetLibVersion -lnppi -lnppc -lnppidei ||
6342                                die "ERROR: libnpp not found"; }
6343 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
6344 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
6345 enabled libopencv         && { check_headers opencv2/core/core_c.h &&
6346                                { check_pkg_config libopencv opencv opencv2/core/core_c.h cvCreateImageHeader ||
6347                                  require libopencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
6348                                require_pkg_config libopencv opencv opencv/cxcore.h cvCreateImageHeader; }
6349 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
6350 enabled libopenjpeg       && { check_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version ||
6351                                { require_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } }
6352 enabled libopenmpt        && require_pkg_config libopenmpt "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create -lstdc++ && append libopenmpt_extralibs "-lstdc++"
6353 enabled libopus           && {
6354     enabled libopus_decoder && {
6355         require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
6356     }
6357     enabled libopus_encoder && {
6358         require_pkg_config libopus opus opus_multistream.h opus_multistream_surround_encoder_create
6359     }
6360 }
6361 enabled libpulse          && require_pkg_config libpulse libpulse pulse/pulseaudio.h pa_context_new
6362 enabled librabbitmq       && require_pkg_config librabbitmq "librabbitmq >= 0.7.1" amqp.h amqp_new_connection
6363 enabled librav1e          && require_pkg_config librav1e "rav1e >= 0.1.0" rav1e.h rav1e_context_new
6364 enabled librsvg           && require_pkg_config librsvg librsvg-2.0 librsvg-2.0/librsvg/rsvg.h rsvg_handle_render_cairo
6365 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
6366 enabled librubberband     && require_pkg_config librubberband "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new -lstdc++ && append librubberband_extralibs "-lstdc++"
6367 enabled libshine          && require_pkg_config libshine shine shine/layer3.h shine_encode_buffer
6368 enabled libsmbclient      && { check_pkg_config libsmbclient smbclient libsmbclient.h smbc_init ||
6369                                require libsmbclient libsmbclient.h smbc_init -lsmbclient; }
6370 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy -lstdc++
6371 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
6372 enabled libssh            && require_pkg_config libssh libssh libssh/sftp.h sftp_init
6373 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init
6374 enabled libsrt            && require_pkg_config libsrt "srt >= 1.3.0" srt/srt.h srt_socket
6375 enabled libtensorflow     && require libtensorflow tensorflow/c/c_api.h TF_Version -ltensorflow
6376 enabled libtesseract      && require_pkg_config libtesseract tesseract tesseract/capi.h TessBaseAPICreate
6377 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
6378 enabled libtls            && require_pkg_config libtls libtls tls.h tls_configure
6379 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
6380                              { check_lib libtwolame twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
6381                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
6382 enabled libv4l2           && require_pkg_config libv4l2 libv4l2 libv4l2.h v4l2_ioctl
6383 enabled libvidstab        && require_pkg_config libvidstab "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
6384 enabled libvmaf           && require_pkg_config libvmaf "libvmaf >= 1.3.9" libvmaf.h compute_vmaf
6385 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
6386 enabled libvorbis         && require_pkg_config libvorbis vorbis vorbis/codec.h vorbis_info_init &&
6387                              require_pkg_config libvorbisenc vorbisenc vorbis/vorbisenc.h vorbis_encode_init
6388
6389 enabled libvpx            && {
6390     enabled libvpx_vp8_decoder && {
6391         check_pkg_config libvpx_vp8_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
6392             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"
6393     }
6394     enabled libvpx_vp8_encoder && {
6395         check_pkg_config libvpx_vp8_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
6396             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"
6397     }
6398     enabled libvpx_vp9_decoder && {
6399         check_pkg_config libvpx_vp9_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
6400             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"
6401     }
6402     enabled libvpx_vp9_encoder && {
6403         check_pkg_config libvpx_vp9_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
6404             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"
6405     }
6406     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
6407         die "libvpx enabled but no supported decoders found"
6408     fi
6409 }
6410
6411 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
6412 enabled libwebp           && {
6413     enabled libwebp_encoder      && require_pkg_config libwebp "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
6414     enabled libwebp_anim_encoder && check_pkg_config libwebp_anim_encoder "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit; }
6415 enabled libx264           && { check_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode ||
6416                                { require libx264 "stdint.h x264.h" x264_encoder_encode "-lx264 $pthreads_extralibs $libm_extralibs" &&
6417                                  warn "using libx264 without pkg-config"; } } &&
6418                              require_cpp_condition libx264 x264.h "X264_BUILD >= 118" &&
6419                              check_cpp_condition libx262 x264.h "X264_MPEG2"
6420 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
6421                              require_cpp_condition libx265 x265.h "X265_BUILD >= 70"
6422 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode "-lxavs $pthreads_extralibs $libm_extralibs"
6423 enabled libxavs2          && require_pkg_config libxavs2 "xavs2 >= 1.3.0" "stdint.h xavs2.h" xavs2_api_get
6424 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
6425 enabled libzimg           && require_pkg_config libzimg "zimg >= 2.7.0" zimg.h zimg_get_api_version
6426 enabled libzmq            && require_pkg_config libzmq "libzmq >= 4.2.1" zmq.h zmq_ctx_new
6427 enabled libzvbi           && require_pkg_config libzvbi zvbi-0.2 libzvbi.h vbi_decoder_new &&
6428                              { test_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
6429                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
6430 enabled libxml2           && require_pkg_config libxml2 libxml-2.0 libxml2/libxml/xmlversion.h xmlCheckVersion
6431 enabled mbedtls           && { check_pkg_config mbedtls mbedtls mbedtls/x509_crt.h mbedtls_x509_crt_init ||
6432                                check_pkg_config mbedtls mbedtls mbedtls/ssl.h mbedtls_ssl_init ||
6433                                check_lib mbedtls mbedtls/ssl.h mbedtls_ssl_init -lmbedtls -lmbedx509 -lmbedcrypto ||
6434                                die "ERROR: mbedTLS not found"; }
6435 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
6436 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
6437                                { ! enabled cross_compile &&
6438                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
6439                                  add_ldflags -L/opt/vc/lib/ &&
6440                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
6441                                die "ERROR: mmal not found" &&
6442                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
6443 enabled openal            && { { for al_extralibs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
6444                                check_lib openal 'AL/al.h' alGetError "${al_extralibs}" && break; done } ||
6445                                die "ERROR: openal not found"; } &&
6446                              { test_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
6447                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
6448 enabled opencl            && { check_pkg_config opencl OpenCL CL/cl.h clEnqueueNDRangeKernel ||
6449                                check_lib opencl OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
6450                                check_lib opencl CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
6451                                die "ERROR: opencl not found"; } &&
6452                              { test_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
6453                                test_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
6454                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
6455 enabled opengl            && { check_lib opengl GL/glx.h glXGetProcAddress "-lGL" ||
6456                                check_lib opengl windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
6457                                check_lib opengl OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
6458                                check_lib opengl ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
6459                                die "ERROR: opengl not found."
6460                              }
6461 enabled omx_rpi           && { test_code cc OMX_Core.h OMX_IndexConfigBrcmVideoRequestIFrame ||
6462                                { ! enabled cross_compile &&
6463                                  add_cflags -isystem/opt/vc/include/IL &&
6464                                  test_code cc OMX_Core.h OMX_IndexConfigBrcmVideoRequestIFrame; } ||
6465                                die "ERROR: OpenMAX IL headers from raspberrypi/firmware not found"; } &&
6466                              enable omx
6467 enabled omx               && require_headers OMX_Core.h
6468 enabled openssl           && { check_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
6469                                check_pkg_config openssl openssl openssl/ssl.h SSL_library_init ||
6470                                check_lib openssl openssl/ssl.h OPENSSL_init_ssl -lssl -lcrypto ||
6471                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
6472                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
6473                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
6474                                die "ERROR: openssl not found"; }
6475 enabled pocketsphinx      && require_pkg_config pocketsphinx pocketsphinx pocketsphinx/pocketsphinx.h ps_init
6476 enabled rkmpp             && { require_pkg_config rkmpp rockchip_mpp  rockchip/rk_mpi.h mpp_create &&
6477                                require_pkg_config rockchip_mpp "rockchip_mpp >= 1.3.7" rockchip/rk_mpi.h mpp_create &&
6478                                { enabled libdrm ||
6479                                  die "ERROR: rkmpp requires --enable-libdrm"; }
6480                              }
6481 enabled vapoursynth       && require_pkg_config vapoursynth "vapoursynth-script >= 42" VSScript.h vsscript_init
6482
6483
6484 if enabled gcrypt; then
6485     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
6486     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
6487         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
6488         gcrypt_extralibs=$("${GCRYPT_CONFIG}" --libs)
6489         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_extralibs ||
6490             die "ERROR: gcrypt not found"
6491         add_cflags $gcrypt_cflags
6492     else
6493         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
6494     fi
6495 fi
6496
6497 if enabled sdl2; then
6498     SDL2_CONFIG="${cross_prefix}sdl2-config"
6499     test_pkg_config sdl2 "sdl2 >= 2.0.1 sdl2 < 2.1.0" SDL_events.h SDL_PollEvent
6500     if disabled sdl2 && "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
6501         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
6502         sdl2_extralibs=$("${SDL2_CONFIG}" --libs)
6503         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
6504         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
6505         check_func_headers SDL_events.h SDL_PollEvent $sdl2_extralibs $sdl2_cflags &&
6506             enable sdl2
6507     fi
6508     if test $target_os = "mingw32"; then
6509         sdl2_extralibs=$(filter_out '-mwindows' $sdl2_extralibs)
6510     fi
6511 fi
6512
6513 if enabled decklink; then
6514     case $target_os in
6515         mingw32*|mingw64*|win32|win64)
6516             decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
6517             decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
6518             ;;
6519     esac
6520 fi
6521
6522 enabled securetransport &&
6523     check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
6524     check_lib securetransport "Security/SecureTransport.h Security/Security.h" "SSLCreateContext" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" ||
6525         disable securetransport
6526
6527 enabled securetransport &&
6528     check_func SecItemImport "-Wl,-framework,CoreFoundation -Wl,-framework,Security"
6529
6530 enabled schannel &&
6531     check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
6532     test_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" &&
6533     schannel_extralibs="-lsecur32" ||
6534         disable schannel
6535
6536 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
6537 enabled makeinfo \
6538     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
6539     && enable makeinfo_html || disable makeinfo_html
6540 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
6541 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
6542 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
6543 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
6544
6545 # check V4L2 codecs available in the API
6546 if enabled v4l2_m2m; then
6547     check_headers linux/fb.h
6548     check_headers linux/videodev2.h
6549     test_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6550     check_cc v4l2_m2m linux/videodev2.h "int i = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_VIDEO_M2M | V4L2_BUF_FLAG_LAST;"
6551     check_cc vc1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VC1_ANNEX_G;"
6552     check_cc mpeg1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG1;"
6553     check_cc mpeg2_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG2;"
6554     check_cc mpeg4_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG4;"
6555     check_cc hevc_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_HEVC;"
6556     check_cc h263_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H263;"
6557     check_cc h264_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H264;"
6558     check_cc vp8_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP8;"
6559     check_cc vp9_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP9;"
6560 fi
6561
6562 check_headers sys/videoio.h
6563 test_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6564
6565 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
6566 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
6567 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
6568 # w32api 3.12 had it defined wrong
6569 check_cpp_condition vfwcap_defines vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER"
6570
6571 check_type "dshow.h" IBaseFilter
6572
6573 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
6574 check_headers "dev/bktr/ioctl_meteor.h dev/bktr/ioctl_bt848.h"                   ||
6575     check_headers "machine/ioctl_meteor.h machine/ioctl_bt848.h"                 ||
6576     check_headers "dev/video/meteor/ioctl_meteor.h dev/video/bktr/ioctl_bt848.h" ||
6577     check_headers "dev/ic/bt8xx.h"
6578
6579 if check_struct sys/soundcard.h audio_buf_info bytes; then
6580     enable_sanitized sys/soundcard.h
6581 else
6582     test_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_sanitized sys/soundcard.h
6583     #include <sys/soundcard.h>
6584     audio_buf_info abc;
6585 EOF
6586 fi
6587
6588 enabled alsa && { check_pkg_config alsa alsa "alsa/asoundlib.h" snd_pcm_htimestamp ||
6589                   check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound; }
6590
6591 enabled libjack &&
6592     require_pkg_config libjack jack jack/jack.h jack_port_get_latency_range
6593
6594 enabled sndio && check_lib sndio sndio.h sio_open -lsndio
6595
6596 if enabled libcdio; then
6597     check_pkg_config libcdio libcdio_paranoia "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open ||
6598     check_pkg_config libcdio libcdio_paranoia "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open ||
6599     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6600     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6601     die "ERROR: No usable libcdio/cdparanoia found"
6602 fi
6603
6604 enabled libxcb && check_pkg_config libxcb "xcb >= 1.4" xcb/xcb.h xcb_connect ||
6605     disable libxcb_shm libxcb_shape libxcb_xfixes
6606
6607 if enabled libxcb; then
6608     enabled libxcb_shm    && check_pkg_config libxcb_shm    xcb-shm    xcb/shm.h    xcb_shm_attach
6609     enabled libxcb_shape  && check_pkg_config libxcb_shape  xcb-shape  xcb/shape.h  xcb_shape_get_rectangles
6610     enabled libxcb_xfixes && check_pkg_config libxcb_xfixes xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image
6611 fi
6612
6613 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6614
6615 # d3d11va requires linking directly to dxgi and d3d11 if not building for
6616 # the desktop api partition
6617 test_cpp <<EOF && enable uwp && d3d11va_extralibs="-ldxgi -ld3d11"
6618 #ifdef WINAPI_FAMILY
6619 #include <winapifamily.h>
6620 #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
6621 #error desktop, not uwp
6622 #else
6623 // WINAPI_FAMILY_APP, WINAPI_FAMILY_PHONE_APP => UWP
6624 #endif
6625 #else
6626 #error no family set
6627 #endif
6628 EOF
6629
6630 enabled vaapi &&
6631     check_pkg_config vaapi "libva >= 0.35.0" "va/va.h" vaInitialize
6632
6633 if enabled vaapi; then
6634     check_pkg_config vaapi_drm "libva-drm" "va/va_drm.h" vaGetDisplayDRM
6635
6636     if enabled xlib; then
6637         check_pkg_config vaapi_x11 "libva-x11" "va/va_x11.h" vaGetDisplay
6638     fi
6639
6640     check_cpp_condition vaapi_1 "va/va.h" "VA_CHECK_VERSION(1, 0, 0)"
6641
6642     check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
6643     check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
6644     check_type   "va/va.h va/va_vpp.h" "VAProcFilterParameterBufferHDRToneMapping"
6645     check_struct "va/va.h va/va_vpp.h" "VAProcPipelineCaps" rotation_flags
6646     check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
6647     check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
6648     check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
6649     check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
6650 fi
6651
6652 if enabled_all opencl libdrm ; then
6653     check_type "CL/cl_intel.h" "clCreateImageFromFdINTEL_fn" &&
6654         enable opencl_drm_beignet
6655     check_func_headers "CL/cl_ext.h" clImportMemoryARM &&
6656         enable opencl_drm_arm
6657 fi
6658
6659 if enabled_all opencl vaapi ; then
6660     if enabled opencl_drm_beignet ; then
6661         enable opencl_vaapi_beignet
6662     else
6663         check_type "CL/cl.h CL/cl_va_api_media_sharing_intel.h" "clCreateFromVA_APIMediaSurfaceINTEL_fn" &&
6664             enable opencl_vaapi_intel_media
6665     fi
6666 fi
6667
6668 if enabled_all opencl dxva2 ; then
6669     check_type "CL/cl_dx9_media_sharing.h" cl_dx9_surface_info_khr &&
6670         enable opencl_dxva2
6671 fi
6672
6673 if enabled_all opencl d3d11va ; then
6674     check_type "CL/cl_d3d11.h" clGetDeviceIDsFromD3D11KHR_fn &&
6675         enable opencl_d3d11
6676 fi
6677
6678 enabled vdpau &&
6679     check_cpp_condition vdpau vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP"
6680
6681 enabled vdpau &&
6682     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
6683
6684 enabled crystalhd && check_lib crystalhd "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd
6685
6686 enabled vulkan &&
6687     require_pkg_config vulkan "vulkan >= 1.1.97" "vulkan/vulkan.h" vkCreateInstance
6688
6689 if enabled x86; then
6690     case $target_os in
6691         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6692             ;;
6693         *)
6694             disable ffnvcodec cuvid nvdec nvenc
6695             ;;
6696     esac
6697 elif enabled_any aarch64 ppc64 && ! enabled bigendian; then
6698     case $target_os in
6699         linux)
6700             ;;
6701         *)
6702             disable ffnvcodec cuvid nvdec nvenc
6703             ;;
6704     esac
6705 else
6706     disable ffnvcodec cuvid nvdec nvenc
6707 fi
6708
6709 enabled ffnvcodec && enable cuda
6710
6711 enabled nvenc &&
6712     test_cc -I$source_path <<EOF || disable nvenc
6713 #include <ffnvcodec/nvEncodeAPI.h>
6714 NV_ENCODE_API_FUNCTION_LIST flist;
6715 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6716 int main(void) { return 0; }
6717 EOF
6718
6719 enabled amf &&
6720     check_cpp_condition amf "AMF/core/Version.h" \
6721         "(AMF_VERSION_MAJOR << 48 | AMF_VERSION_MINOR << 32 | AMF_VERSION_RELEASE << 16 | AMF_VERSION_BUILD_NUM) >= 0x0001000400090000"
6722
6723 # Funny iconv installations are not unusual, so check it after all flags have been set
6724 if enabled libc_iconv; then
6725     check_func_headers iconv.h iconv
6726 elif enabled iconv; then
6727     check_func_headers iconv.h iconv || check_lib iconv iconv.h iconv -liconv
6728 fi
6729
6730 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6731
6732 # add some useful compiler flags if supported
6733 check_cflags -Wdeclaration-after-statement
6734 check_cflags -Wall
6735 check_cflags -Wdisabled-optimization
6736 check_cflags -Wpointer-arith
6737 check_cflags -Wredundant-decls
6738 check_cflags -Wwrite-strings
6739 check_cflags -Wtype-limits
6740 check_cflags -Wundef
6741 check_cflags -Wmissing-prototypes
6742 check_cflags -Wno-pointer-to-int-cast
6743 check_cflags -Wstrict-prototypes
6744 check_cflags -Wempty-body
6745
6746 if enabled extra_warnings; then
6747     check_cflags -Wcast-qual
6748     check_cflags -Wextra
6749     check_cflags -Wpedantic
6750 fi
6751
6752 check_disable_warning(){
6753     warning_flag=-W${1#-Wno-}
6754     test_cflags $unknown_warning_flags $warning_flag && add_cflags $1
6755 }
6756
6757 test_cflags -Werror=unused-command-line-argument &&
6758     append unknown_warning_flags "-Werror=unused-command-line-argument"
6759 test_cflags -Werror=unknown-warning-option &&
6760     append unknown_warning_flags "-Werror=unknown-warning-option"
6761
6762 check_disable_warning -Wno-parentheses
6763 check_disable_warning -Wno-switch
6764 check_disable_warning -Wno-format-zero-length
6765 check_disable_warning -Wno-pointer-sign
6766 check_disable_warning -Wno-unused-const-variable
6767 check_disable_warning -Wno-bool-operation
6768 check_disable_warning -Wno-char-subscripts
6769
6770 check_disable_warning_headers(){
6771     warning_flag=-W${1#-Wno-}
6772     test_cflags $warning_flag && add_cflags_headers $1
6773 }
6774
6775 check_disable_warning_headers -Wno-deprecated-declarations
6776 check_disable_warning_headers -Wno-unused-variable
6777
6778 test_cc <<EOF && enable blocks_extension
6779 void (^block)(void);
6780 EOF
6781
6782 # add some linker flags
6783 check_ldflags -Wl,--warn-common
6784 check_ldflags -Wl,-rpath-link=:libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6785 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir && add_ldsoflags -Wl,-rpath,$libdir
6786 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6787
6788 # add some strip flags
6789 check_stripflags -x
6790
6791 enabled neon_clobber_test &&
6792     check_ldflags -Wl,--wrap,avcodec_open2              \
6793                   -Wl,--wrap,avcodec_decode_audio4      \
6794                   -Wl,--wrap,avcodec_decode_video2      \
6795                   -Wl,--wrap,avcodec_decode_subtitle2   \
6796                   -Wl,--wrap,avcodec_encode_audio2      \
6797                   -Wl,--wrap,avcodec_encode_video2      \
6798                   -Wl,--wrap,avcodec_encode_subtitle    \
6799                   -Wl,--wrap,avcodec_send_packet        \
6800                   -Wl,--wrap,avcodec_receive_packet     \
6801                   -Wl,--wrap,avcodec_send_frame         \
6802                   -Wl,--wrap,avcodec_receive_frame      \
6803                   -Wl,--wrap,swr_convert                \
6804                   -Wl,--wrap,avresample_convert ||
6805     disable neon_clobber_test
6806
6807 enabled xmm_clobber_test &&
6808     check_ldflags -Wl,--wrap,avcodec_open2              \
6809                   -Wl,--wrap,avcodec_decode_audio4      \
6810                   -Wl,--wrap,avcodec_decode_video2      \
6811                   -Wl,--wrap,avcodec_decode_subtitle2   \
6812                   -Wl,--wrap,avcodec_encode_audio2      \
6813                   -Wl,--wrap,avcodec_encode_video2      \
6814                   -Wl,--wrap,avcodec_encode_subtitle    \
6815                   -Wl,--wrap,avcodec_send_packet        \
6816                   -Wl,--wrap,avcodec_receive_packet     \
6817                   -Wl,--wrap,avcodec_send_frame         \
6818                   -Wl,--wrap,avcodec_receive_frame      \
6819                   -Wl,--wrap,swr_convert                \
6820                   -Wl,--wrap,avresample_convert         \
6821                   -Wl,--wrap,sws_scale ||
6822     disable xmm_clobber_test
6823
6824 check_ld "cc" proper_dce <<EOF
6825 extern const int array[512];
6826 static inline int func(void) { return array[0]; }
6827 int main(void) { return 0; }
6828 EOF
6829
6830 if enabled proper_dce; then
6831     echo "X { local: *; };" > $TMPV
6832     if test_ldflags -Wl,${version_script},$TMPV; then
6833         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6834         quotes='""'
6835         test_cc <<EOF && enable symver_asm_label
6836 void ff_foo(void) __asm__ ("av_foo@VERSION");
6837 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6838 EOF
6839         test_cc <<EOF && enable symver_gnu_asm
6840 __asm__(".symver ff_foo,av_foo@VERSION");
6841 void ff_foo(void) {}
6842 EOF
6843     fi
6844 fi
6845
6846 if [ -z "$optflags" ]; then
6847     if enabled small; then
6848         optflags=$cflags_size
6849     elif enabled optimizations; then
6850         optflags=$cflags_speed
6851     else
6852         optflags=$cflags_noopt
6853     fi
6854 fi
6855
6856 check_optflags(){
6857     check_cflags "$@"
6858     enabled lto && check_ldflags "$@"
6859 }
6860
6861 check_optflags $optflags
6862 check_optflags -fno-math-errno
6863 check_optflags -fno-signed-zeros
6864
6865 if enabled lto; then
6866     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6867     check_cflags  -flto
6868     check_ldflags -flto $cpuflags
6869     disable inline_asm_direct_symbol_refs
6870 fi
6871
6872 enabled ftrapv && check_cflags -ftrapv
6873
6874 test_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6875 int x;
6876 EOF
6877
6878
6879 if enabled icc; then
6880     # Just warnings, no remarks
6881     check_cflags -w1
6882     # -wd: Disable following warnings
6883     # 144, 167, 556: -Wno-pointer-sign
6884     # 188: enumerated type mixed with another type
6885     # 1292: attribute "foo" ignored
6886     # 1419: external declaration in primary source file
6887     # 10006: ignoring unknown option -fno-signed-zeros
6888     # 10148: ignoring unknown option -Wno-parentheses
6889     # 10156: ignoring option '-W'; no argument required
6890     # 13200: No EMMS instruction before call to function
6891     # 13203: No EMMS instruction before return from function
6892     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6893     # 11030: Warning unknown option --as-needed
6894     # 10156: ignoring option '-export'; no argument required
6895     check_ldflags -wd10156,11030
6896     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6897     enable ebp_available
6898     # The test above does not test linking
6899     enabled lto && disable symver_asm_label
6900     if enabled x86_32; then
6901         icc_version=$($cc -dumpversion)
6902         test ${icc_version%%.*} -ge 11 &&
6903             check_cflags -falign-stack=maintain-16-byte ||
6904             disable aligned_stack
6905     fi
6906 elif enabled gcc; then
6907     check_optflags -fno-tree-vectorize
6908     check_cflags -Werror=format-security
6909     check_cflags -Werror=implicit-function-declaration
6910     check_cflags -Werror=missing-prototypes
6911     check_cflags -Werror=return-type
6912     check_cflags -Werror=vla
6913     check_cflags -Wformat
6914     check_cflags -fdiagnostics-color=auto
6915     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6916     if enabled x86_32; then
6917         case $target_os in
6918         *bsd*)
6919             # BSDs don't guarantee a 16 byte aligned stack, but we can
6920             # request GCC to try to maintain 16 byte alignment throughout
6921             # function calls. Library entry points that might call assembly
6922             # functions align the stack. (The parameter means 2^4 bytes.)
6923             check_cflags -mpreferred-stack-boundary=4
6924             ;;
6925         esac
6926     fi
6927 elif enabled llvm_gcc; then
6928     check_cflags -mllvm -stack-alignment=16
6929 elif enabled clang; then
6930     if enabled x86_32; then
6931         # Clang doesn't support maintaining alignment without assuming the
6932         # same alignment in every function. If 16 byte alignment would be
6933         # enabled, one would also have to either add attribute_align_arg on
6934         # every single entry point into the libraries or enable -mstackrealign
6935         # (doing stack realignment in every single function).
6936         case $target_os in
6937         mingw32|win32|*bsd*)
6938             disable aligned_stack
6939             ;;
6940         *)
6941             check_cflags -mllvm -stack-alignment=16
6942             check_cflags -mstack-alignment=16
6943             ;;
6944         esac
6945     else
6946         check_cflags -mllvm -stack-alignment=16
6947         check_cflags -mstack-alignment=16
6948     fi
6949     check_cflags -Qunused-arguments
6950     check_cflags -Werror=implicit-function-declaration
6951     check_cflags -Werror=missing-prototypes
6952     check_cflags -Werror=return-type
6953 elif enabled cparser; then
6954     add_cflags -Wno-missing-variable-declarations
6955     add_cflags -Wno-empty-statement
6956 elif enabled armcc; then
6957     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6958     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6959     # 2523: use of inline assembly is deprecated
6960     add_cflags -W${armcc_opt},--diag_suppress=2523
6961     add_cflags -W${armcc_opt},--diag_suppress=1207
6962     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6963     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6964     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6965     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6966 elif enabled pathscale; then
6967     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6968     disable inline_asm
6969 elif enabled_any msvc icl; then
6970     enabled x86_32 && disable aligned_stack
6971     enabled_all x86_32 debug && add_cflags -Oy-
6972     enabled debug && add_ldflags -debug
6973     enable pragma_deprecated
6974     if enabled icl; then
6975         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6976         # (correctly) on icl 13.x.
6977         test_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6978             add_cflags -Qansi-alias
6979         # Some inline asm is not compilable in debug
6980         if enabled debug; then
6981             disable ebp_available
6982             disable ebx_available
6983         fi
6984     fi
6985     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6986     check_cpp_condition log2 crtversion.h "_VC_CRT_MAJOR_VERSION >= 12"
6987     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6988     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6989     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6990     # MSVC 2013 and newer can handle it fine.
6991     # If this declspec fails, force including stdlib.h before the restrict redefinition
6992     # happens in config.h.
6993     if [ $restrict_keyword != restrict ]; then
6994         test_cc <<EOF || add_cflags -FIstdlib.h
6995 __declspec($restrict_keyword) void *foo(int);
6996 EOF
6997     fi
6998     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6999     # Issue has been fixed in MSVC v19.00.24218.
7000     test_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
7001         check_cflags -d2SSAOptimizer-
7002     # enable utf-8 source processing on VS2015 U2 and newer
7003     test_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
7004         add_cflags -utf-8
7005 fi
7006
7007 for pfx in "" host_; do
7008     varname=${pfx%_}cc_type
7009     eval "type=\$$varname"
7010     if [ "$type" = "msvc" ]; then
7011         test_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
7012 static inline int foo(int a) { return a; }
7013 EOF
7014     fi
7015 done
7016
7017 case $as_type in
7018     clang)
7019         add_asflags -Qunused-arguments
7020     ;;
7021 esac
7022
7023 case $ld_type in
7024     clang)
7025         check_ldflags -Qunused-arguments
7026     ;;
7027 esac
7028
7029 enable frame_thread_encoder
7030
7031 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
7032
7033 check_deps $CONFIG_LIST       \
7034            $CONFIG_EXTRA      \
7035            $HAVE_LIST         \
7036            $ALL_COMPONENTS    \
7037
7038 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"
7039 enabled avresample && warn "Building with deprecated library libavresample"
7040
7041 case $target_os in
7042 haiku)
7043     disable memalign
7044     disable posix_memalign
7045     ;;
7046 *-dos|freedos|opendos)
7047     if test_cpp_condition sys/version.h "defined(__DJGPP__) && __DJGPP__ == 2 && __DJGPP_MINOR__ == 5"; then
7048         disable memalign
7049     fi
7050     ;;
7051 esac
7052
7053 flatten_extralibs(){
7054     nested_entries=
7055     list_name=$1
7056     eval list=\$${1}
7057     for entry in $list; do
7058         entry_copy=$entry
7059         resolve entry_copy
7060         flat_entries=
7061         for e in $entry_copy; do
7062             case $e in
7063                 *_extralibs) nested_entries="$nested_entries$e ";;
7064                           *) flat_entries="$flat_entries$e ";;
7065             esac
7066         done
7067         eval $entry="\$flat_entries"
7068     done
7069     append $list_name "$nested_entries"
7070
7071     resolve nested_entries
7072     if test -n "$(filter '*_extralibs' $nested_entries)"; then
7073         flatten_extralibs $list_name
7074     fi
7075 }
7076
7077 flatten_extralibs_wrapper(){
7078     list_name=$1
7079     flatten_extralibs $list_name
7080     unique $list_name
7081     resolve $list_name
7082     eval $list_name=\$\(\$ldflags_filter \$$list_name\)
7083     eval printf \''%s'\' \""\$$list_name"\"
7084 }
7085
7086 for linkunit in $LIBRARY_LIST; do
7087     unset current_extralibs
7088     eval components=\$$(toupper ${linkunit})_COMPONENTS_LIST
7089     for comp in ${components}; do
7090         enabled $comp || continue
7091         comp_extralibs="${comp}_extralibs"
7092         append current_extralibs $comp_extralibs
7093     done
7094     eval prepend ${linkunit}_extralibs $current_extralibs
7095 done
7096
7097 for linkunit in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
7098     eval ${linkunit}_extralibs=\$\(flatten_extralibs_wrapper ${linkunit}_extralibs\)
7099 done
7100
7101 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
7102
7103 for thread in $THREADS_LIST; do
7104     if enabled $thread; then
7105         test -n "$thread_type" &&
7106             die "ERROR: Only one thread type must be selected." ||
7107             thread_type="$thread"
7108     fi
7109 done
7110
7111 if disabled stdatomic; then
7112     if enabled atomics_gcc; then
7113         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
7114     elif enabled atomics_win32; then
7115         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
7116     elif enabled atomics_suncc; then
7117         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
7118     elif enabled pthreads; then
7119         add_compat atomics/pthread/stdatomic.o
7120         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
7121     else
7122         enabled threads && die "Threading is enabled, but no atomics are available"
7123         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
7124     fi
7125 fi
7126
7127 # Check if requested libraries were found.
7128 for lib in $AUTODETECT_LIBS; do
7129     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
7130 done
7131
7132 enabled zlib && add_cppflags -DZLIB_CONST
7133
7134 # conditional library dependencies, in any order
7135 enabled afftdn_filter       && prepend avfilter_deps "avcodec"
7136 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
7137 enabled afir_filter         && prepend avfilter_deps "avcodec"
7138 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
7139 enabled aresample_filter    && prepend avfilter_deps "swresample"
7140 enabled atempo_filter       && prepend avfilter_deps "avcodec"
7141 enabled bm3d_filter         && prepend avfilter_deps "avcodec"
7142 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
7143 enabled convolve_filter     && prepend avfilter_deps "avcodec"
7144 enabled deconvolve_filter   && prepend avfilter_deps "avcodec"
7145 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
7146 enabled elbg_filter         && prepend avfilter_deps "avcodec"
7147 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
7148 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
7149 enabled firequalizer_filter && prepend avfilter_deps "avcodec"
7150 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
7151 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
7152 enabled pan_filter          && prepend avfilter_deps "swresample"
7153 enabled pp_filter           && prepend avfilter_deps "postproc"
7154 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
7155 enabled resample_filter && prepend avfilter_deps "avresample"
7156 enabled sab_filter          && prepend avfilter_deps "swscale"
7157 enabled scale_filter    && prepend avfilter_deps "swscale"
7158 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
7159 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
7160 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
7161 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
7162 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
7163 enabled signature_filter    && prepend avfilter_deps "avcodec avformat"
7164 enabled smartblur_filter    && prepend avfilter_deps "swscale"
7165 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
7166 enabled spp_filter          && prepend avfilter_deps "avcodec"
7167 enabled sr_filter           && prepend avfilter_deps "avformat swscale"
7168 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
7169 enabled uspp_filter         && prepend avfilter_deps "avcodec"
7170 enabled zoompan_filter      && prepend avfilter_deps "swscale"
7171
7172 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
7173
7174 #FIXME
7175 enabled_any sdl2_outdev opengl_outdev && enabled sdl2 &&
7176     add_cflags $(filter_out '-Dmain=SDL_main' $sdl2_cflags)
7177
7178 enabled opus_decoder    && prepend avcodec_deps "swresample"
7179
7180 # reorder the items at var $1 to align with the items order at var $2 .
7181 # die if an item at $1 is not at $2 .
7182 reorder_by(){
7183     eval rb_in=\$$1
7184     eval rb_ordered=\$$2
7185
7186     for rb in $rb_in; do
7187         is_in $rb $rb_ordered || die "$rb at \$$1 is not at \$$2"
7188     done
7189
7190     rb_out=
7191     for rb in $rb_ordered; do
7192         is_in $rb $rb_in && rb_out="$rb_out$rb "
7193     done
7194     eval $1=\$rb_out
7195 }
7196
7197 # deps-expand fflib $1:  N x {append all expanded deps; unique}
7198 # within a set of N items, N expansions are enough to expose a cycle.
7199 expand_deps(){
7200     unique ${1}_deps  # required for the early break test.
7201     for dummy in $LIBRARY_LIST; do  # N iteratios
7202         eval deps=\$${1}_deps
7203         append ${1}_deps $(map 'eval echo \$${v}_deps' $deps)
7204         unique ${1}_deps
7205         eval '[ ${#deps} = ${#'${1}_deps'} ]' && break  # doesn't expand anymore
7206     done
7207
7208     eval is_in $1 \$${1}_deps && die "Dependency cycle at ${1}_deps"
7209     reorder_by ${1}_deps LIBRARY_LIST  # linking order is expected later
7210 }
7211
7212 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
7213 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
7214
7215 map 'expand_deps $v' $LIBRARY_LIST
7216
7217 if test "$quiet" != "yes"; then
7218
7219 echo "install prefix            $prefix"
7220 echo "source path               $source_path"
7221 echo "C compiler                $cc"
7222 echo "C library                 $libc_type"
7223 if test "$host_cc" != "$cc"; then
7224     echo "host C compiler           $host_cc"
7225     echo "host C library            $host_libc_type"
7226 fi
7227 echo "ARCH                      $arch ($cpu)"
7228 if test "$build_suffix" != ""; then
7229     echo "build suffix              $build_suffix"
7230 fi
7231 if test "$progs_suffix" != ""; then
7232     echo "progs suffix              $progs_suffix"
7233 fi
7234 if test "$extra_version" != ""; then
7235     echo "version string suffix     $extra_version"
7236 fi
7237 echo "big-endian                ${bigendian-no}"
7238 echo "runtime cpu detection     ${runtime_cpudetect-no}"
7239 if enabled x86; then
7240     echo "standalone assembly       ${x86asm-no}"
7241     echo "x86 assembler             ${x86asmexe}"
7242     echo "MMX enabled               ${mmx-no}"
7243     echo "MMXEXT enabled            ${mmxext-no}"
7244     echo "3DNow! enabled            ${amd3dnow-no}"
7245     echo "3DNow! extended enabled   ${amd3dnowext-no}"
7246     echo "SSE enabled               ${sse-no}"
7247     echo "SSSE3 enabled             ${ssse3-no}"
7248     echo "AESNI enabled             ${aesni-no}"
7249     echo "AVX enabled               ${avx-no}"
7250     echo "AVX2 enabled              ${avx2-no}"
7251     echo "AVX-512 enabled           ${avx512-no}"
7252     echo "XOP enabled               ${xop-no}"
7253     echo "FMA3 enabled              ${fma3-no}"
7254     echo "FMA4 enabled              ${fma4-no}"
7255     echo "i686 features enabled     ${i686-no}"
7256     echo "CMOV is fast              ${fast_cmov-no}"
7257     echo "EBX available             ${ebx_available-no}"
7258     echo "EBP available             ${ebp_available-no}"
7259 fi
7260 if enabled aarch64; then
7261     echo "NEON enabled              ${neon-no}"
7262     echo "VFP enabled               ${vfp-no}"
7263 fi
7264 if enabled arm; then
7265     echo "ARMv5TE enabled           ${armv5te-no}"
7266     echo "ARMv6 enabled             ${armv6-no}"
7267     echo "ARMv6T2 enabled           ${armv6t2-no}"
7268     echo "VFP enabled               ${vfp-no}"
7269     echo "NEON enabled              ${neon-no}"
7270     echo "THUMB enabled             ${thumb-no}"
7271 fi
7272 if enabled mips; then
7273     echo "MIPS FPU enabled          ${mipsfpu-no}"
7274     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
7275     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
7276     echo "MIPS MSA enabled          ${msa-no}"
7277     echo "MIPS MSA2 enabled         ${msa2-no}"
7278     echo "LOONGSON MMI enabled      ${mmi-no}"
7279 fi
7280 if enabled ppc; then
7281     echo "AltiVec enabled           ${altivec-no}"
7282     echo "VSX enabled               ${vsx-no}"
7283     echo "POWER8 enabled            ${power8-no}"
7284     echo "PPC 4xx optimizations     ${ppc4xx-no}"
7285     echo "dcbzl available           ${dcbzl-no}"
7286 fi
7287 echo "debug symbols             ${debug-no}"
7288 echo "strip symbols             ${stripping-no}"
7289 echo "optimize for size         ${small-no}"
7290 echo "optimizations             ${optimizations-no}"
7291 echo "static                    ${static-no}"
7292 echo "shared                    ${shared-no}"
7293 echo "postprocessing support    ${postproc-no}"
7294 echo "network support           ${network-no}"
7295 echo "threading support         ${thread_type-no}"
7296 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
7297 echo "texi2html enabled         ${texi2html-no}"
7298 echo "perl enabled              ${perl-no}"
7299 echo "pod2man enabled           ${pod2man-no}"
7300 echo "makeinfo enabled          ${makeinfo-no}"
7301 echo "makeinfo supports HTML    ${makeinfo_html-no}"
7302 test -n "$random_seed" &&
7303     echo "random seed               ${random_seed}"
7304 echo
7305
7306 echo "External libraries:"
7307 print_enabled '' $EXTERNAL_LIBRARY_LIST $EXTERNAL_AUTODETECT_LIBRARY_LIST | print_in_columns
7308 echo
7309
7310 echo "External libraries providing hardware acceleration:"
7311 print_enabled '' $HWACCEL_LIBRARY_LIST $HWACCEL_AUTODETECT_LIBRARY_LIST | print_in_columns
7312 echo
7313
7314 echo "Libraries:"
7315 print_enabled '' $LIBRARY_LIST | print_in_columns
7316 echo
7317
7318 echo "Programs:"
7319 print_enabled '' $PROGRAM_LIST | print_in_columns
7320 echo
7321
7322 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
7323     echo "Enabled ${type}s:"
7324     eval list=\$$(toupper $type)_LIST
7325     print_enabled '_*' $list | print_in_columns
7326     echo
7327 done
7328
7329 if test -n "$ignore_tests"; then
7330     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
7331     echo "Ignored FATE tests:"
7332     echo $ignore_tests | print_in_columns
7333     echo
7334 fi
7335
7336 echo "License: $license"
7337
7338 fi # test "$quiet" != "yes"
7339
7340 if test -n "$WARN_IF_GETS_DISABLED_LIST"; then
7341     for cfg in $WARN_IF_GETS_DISABLED_LIST; do
7342         if disabled $cfg; then
7343             varname=${cfg}_disable_reason
7344             eval "warn \"Disabled $cfg because \$$varname\""
7345         fi
7346     done
7347 fi
7348
7349 if test -n "$WARNINGS"; then
7350     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
7351     enabled fatal_warnings && exit 1
7352 fi
7353
7354 test -e Makefile || echo "include $source_path/Makefile" > Makefile
7355
7356 esc(){
7357     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
7358 }
7359
7360 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" > ffbuild/config.fate
7361
7362 enabled stripping || strip="echo skipping strip"
7363 enabled stripping || striptype=""
7364
7365 config_files="$TMPH ffbuild/config.mak doc/config.texi"
7366
7367 cat > ffbuild/config.mak <<EOF
7368 # Automatically generated by configure - do not modify!
7369 ifndef FFMPEG_CONFIG_MAK
7370 FFMPEG_CONFIG_MAK=1
7371 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
7372 prefix=$prefix
7373 LIBDIR=\$(DESTDIR)$libdir
7374 SHLIBDIR=\$(DESTDIR)$shlibdir
7375 INCDIR=\$(DESTDIR)$incdir
7376 BINDIR=\$(DESTDIR)$bindir
7377 DATADIR=\$(DESTDIR)$datadir
7378 DOCDIR=\$(DESTDIR)$docdir
7379 MANDIR=\$(DESTDIR)$mandir
7380 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
7381 INSTALL_NAME_DIR=$install_name_dir
7382 SRC_PATH=$source_path
7383 SRC_LINK=$source_link
7384 ifndef MAIN_MAKEFILE
7385 SRC_PATH:=\$(SRC_PATH:.%=..%)
7386 endif
7387 CC_IDENT=$cc_ident
7388 ARCH=$arch
7389 INTRINSICS=$intrinsics
7390 EXTERN_PREFIX=$extern_prefix
7391 CC=$cc
7392 CXX=$cxx
7393 AS=$as
7394 OBJCC=$objcc
7395 LD=$ld
7396 DEPCC=$dep_cc
7397 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
7398 DEPAS=$as
7399 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
7400 X86ASM=$x86asmexe
7401 DEPX86ASM=$x86asmexe
7402 DEPX86ASMFLAGS=\$(X86ASMFLAGS)
7403 AR=$ar
7404 ARFLAGS=$arflags
7405 AR_O=$ar_o
7406 AR_CMD=$ar
7407 NM_CMD=$nm
7408 RANLIB=$ranlib
7409 STRIP=$strip
7410 STRIPTYPE=$striptype
7411 NVCC=$nvcc
7412 CP=cp -p
7413 LN_S=$ln_s
7414 CPPFLAGS=$CPPFLAGS
7415 CFLAGS=$CFLAGS
7416 CXXFLAGS=$CXXFLAGS
7417 OBJCFLAGS=$OBJCFLAGS
7418 ASFLAGS=$ASFLAGS
7419 NVCCFLAGS=$nvccflags
7420 AS_C=$AS_C
7421 AS_O=$AS_O
7422 OBJCC_C=$OBJCC_C
7423 OBJCC_E=$OBJCC_E
7424 OBJCC_O=$OBJCC_O
7425 CC_C=$CC_C
7426 CC_E=$CC_E
7427 CC_O=$CC_O
7428 CXX_C=$CXX_C
7429 CXX_O=$CXX_O
7430 NVCC_C=$NVCC_C
7431 NVCC_O=$NVCC_O
7432 LD_O=$LD_O
7433 X86ASM_O=$X86ASM_O
7434 LD_LIB=$LD_LIB
7435 LD_PATH=$LD_PATH
7436 DLLTOOL=$dlltool
7437 WINDRES=$windres
7438 DEPWINDRES=$dep_cc
7439 DOXYGEN=$doxygen
7440 LDFLAGS=$LDFLAGS
7441 LDEXEFLAGS=$LDEXEFLAGS
7442 LDSOFLAGS=$LDSOFLAGS
7443 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
7444 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
7445 X86ASMFLAGS=$X86ASMFLAGS
7446 BUILDSUF=$build_suffix
7447 PROGSSUF=$progs_suffix
7448 FULLNAME=$FULLNAME
7449 LIBPREF=$LIBPREF
7450 LIBSUF=$LIBSUF
7451 LIBNAME=$LIBNAME
7452 SLIBPREF=$SLIBPREF
7453 SLIBSUF=$SLIBSUF
7454 EXESUF=$EXESUF
7455 EXTRA_VERSION=$extra_version
7456 CCDEP=$CCDEP
7457 CXXDEP=$CXXDEP
7458 CCDEP_FLAGS=$CCDEP_FLAGS
7459 ASDEP=$ASDEP
7460 ASDEP_FLAGS=$ASDEP_FLAGS
7461 X86ASMDEP=$X86ASMDEP
7462 X86ASMDEP_FLAGS=$X86ASMDEP_FLAGS
7463 CC_DEPFLAGS=$CC_DEPFLAGS
7464 AS_DEPFLAGS=$AS_DEPFLAGS
7465 X86ASM_DEPFLAGS=$X86ASM_DEPFLAGS
7466 HOSTCC=$host_cc
7467 HOSTLD=$host_ld
7468 HOSTCFLAGS=$host_cflags
7469 HOSTCPPFLAGS=$host_cppflags
7470 HOSTEXESUF=$HOSTEXESUF
7471 HOSTLDFLAGS=$host_ldflags
7472 HOSTEXTRALIBS=$host_extralibs
7473 DEPHOSTCC=$host_cc
7474 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
7475 HOSTCCDEP=$HOSTCCDEP
7476 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
7477 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
7478 HOSTCC_C=$HOSTCC_C
7479 HOSTCC_O=$HOSTCC_O
7480 HOSTLD_O=$HOSTLD_O
7481 TARGET_EXEC=$target_exec $target_exec_args
7482 TARGET_PATH=$target_path
7483 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
7484 CFLAGS-ffplay=${sdl2_cflags}
7485 CFLAGS_HEADERS=$CFLAGS_HEADERS
7486 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
7487 EXTRALIBS=$extralibs
7488 COMPAT_OBJS=$compat_objs
7489 INSTALL=$install
7490 LIBTARGET=${LIBTARGET}
7491 SLIBNAME=${SLIBNAME}
7492 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
7493 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
7494 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
7495 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
7496 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
7497 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
7498 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
7499 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
7500 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
7501 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
7502 NOREDZONE_FLAGS=$noredzone_flags
7503 LIBFUZZER_PATH=$libfuzzer_path
7504 IGNORE_TESTS=$ignore_tests
7505 EOF
7506
7507 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> ffbuild/config.mak' $LIBRARY_LIST
7508
7509 for entry in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
7510     eval echo "EXTRALIBS-${entry}=\$${entry}_extralibs" >> ffbuild/config.mak
7511 done
7512
7513 cat > $TMPH <<EOF
7514 /* Automatically generated by configure - do not modify! */
7515 #ifndef FFMPEG_CONFIG_H
7516 #define FFMPEG_CONFIG_H
7517 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
7518 #define FFMPEG_LICENSE "$(c_escape $license)"
7519 #define CONFIG_THIS_YEAR 2020
7520 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
7521 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
7522 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
7523 #define av_restrict $restrict_keyword
7524 #define EXTERN_PREFIX "${extern_prefix}"
7525 #define EXTERN_ASM ${extern_prefix}
7526 #define BUILDSUF "$build_suffix"
7527 #define SLIBSUF "$SLIBSUF"
7528 #define HAVE_MMX2 HAVE_MMXEXT
7529 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
7530 EOF
7531
7532 test -n "$assert_level" &&
7533     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
7534
7535 test -n "$malloc_prefix" &&
7536     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
7537
7538 if enabled x86asm; then
7539     append config_files $TMPASM
7540     cat > $TMPASM <<EOF
7541 ; Automatically generated by configure - do not modify!
7542 EOF
7543 fi
7544
7545 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
7546
7547
7548 mkdir -p doc
7549 mkdir -p tests
7550 mkdir -p tests/api
7551 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
7552
7553 print_config ARCH_   "$config_files" $ARCH_LIST
7554 print_config HAVE_   "$config_files" $HAVE_LIST
7555 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
7556                                      $CONFIG_EXTRA      \
7557                                      $ALL_COMPONENTS    \
7558
7559 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
7560 echo "endif # FFMPEG_CONFIG_MAK" >> ffbuild/config.mak
7561
7562 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
7563 cp_if_changed $TMPH config.h
7564 touch ffbuild/.config
7565
7566 enabled x86asm && cp_if_changed $TMPASM config.asm
7567
7568 cat > $TMPH <<EOF
7569 /* Generated by ffmpeg configure */
7570 #ifndef AVUTIL_AVCONFIG_H
7571 #define AVUTIL_AVCONFIG_H
7572 EOF
7573
7574 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
7575
7576 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
7577
7578 cp_if_changed $TMPH libavutil/avconfig.h
7579
7580 # full_filter_name_foo=vf_foo
7581 # full_filter_name_bar=asrc_bar
7582 # ...
7583 eval "$(sed -n "s/^extern AVFilter ff_\([avfsinkrc]\{2,5\}\)_\(.*\);/full_filter_name_\2=\1_\2/p" $source_path/libavfilter/allfilters.c)"
7584
7585 # generate the lists of enabled components
7586 print_enabled_components(){
7587     file=$1
7588     struct_name=$2
7589     name=$3
7590     shift 3
7591     echo "static const $struct_name * const $name[] = {" > $TMPH
7592     for c in $*; do
7593         if enabled $c; then
7594             case $name in
7595                 filter_list)
7596                     eval c=\$full_filter_name_${c%_filter}
7597                 ;;
7598                 indev_list)
7599                     c=${c%_indev}_demuxer
7600                 ;;
7601                 outdev_list)
7602                     c=${c%_outdev}_muxer
7603                 ;;
7604             esac
7605             printf "    &ff_%s,\n" $c >> $TMPH
7606         fi
7607     done
7608     if [ "$name" = "filter_list" ]; then
7609         for c in asrc_abuffer vsrc_buffer asink_abuffer vsink_buffer; do
7610             printf "    &ff_%s,\n" $c >> $TMPH
7611         done
7612     fi
7613     echo "    NULL };" >> $TMPH
7614     cp_if_changed $TMPH $file
7615 }
7616
7617 print_enabled_components libavfilter/filter_list.c AVFilter filter_list $FILTER_LIST
7618 print_enabled_components libavcodec/codec_list.c AVCodec codec_list $CODEC_LIST
7619 print_enabled_components libavcodec/parser_list.c AVCodecParser parser_list $PARSER_LIST
7620 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
7621 print_enabled_components libavformat/demuxer_list.c AVInputFormat demuxer_list $DEMUXER_LIST
7622 print_enabled_components libavformat/muxer_list.c AVOutputFormat muxer_list $MUXER_LIST
7623 print_enabled_components libavdevice/indev_list.c AVInputFormat indev_list $INDEV_LIST
7624 print_enabled_components libavdevice/outdev_list.c AVOutputFormat outdev_list $OUTDEV_LIST
7625 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
7626
7627 # Settings for pkg-config files
7628
7629 cat > $TMPH <<EOF
7630 # Automatically generated by configure - do not modify!
7631 shared=$shared
7632 build_suffix=$build_suffix
7633 prefix=$prefix
7634 libdir=$libdir
7635 incdir=$incdir
7636 rpath=$(enabled rpath && echo "-Wl,-rpath,\${libdir}")
7637 source_path=${source_path}
7638 LIBPREF=${LIBPREF}
7639 LIBSUF=${LIBSUF}
7640 extralibs_avutil="$avutil_extralibs"
7641 extralibs_avcodec="$avcodec_extralibs"
7642 extralibs_avformat="$avformat_extralibs"
7643 extralibs_avdevice="$avdevice_extralibs"
7644 extralibs_avfilter="$avfilter_extralibs"
7645 extralibs_avresample="$avresample_extralibs"
7646 extralibs_postproc="$postproc_extralibs"
7647 extralibs_swscale="$swscale_extralibs"
7648 extralibs_swresample="$swresample_extralibs"
7649 EOF
7650
7651 for lib in $LIBRARY_LIST; do
7652     lib_deps="$(eval echo \$${lib}_deps)"
7653     echo ${lib}_deps=\"$lib_deps\" >> $TMPH
7654 done
7655
7656 cp_if_changed $TMPH ffbuild/config.sh