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-libgme          enable Game Music Emu via libgme [no]
 240   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 241   --enable-libiec61883     enable iec61883 via libiec61883 [no]
 242   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 243   --enable-libjack         enable JACK audio sound server [no]
 244   --enable-libklvanc       enable Kernel Labs VANC processing [no]
 245   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
 246   --enable-liblensfun      enable lensfun lens correction [no]
 247   --enable-libmodplug      enable ModPlug via libmodplug [no]
 248   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 249   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 250   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 251   --enable-libopencv       enable video filtering via libopencv [no]
 252   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
 253   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 254   --enable-libopenmpt      enable decoding tracked files via libopenmpt [no]
 255   --enable-libopus         enable Opus de/encoding via libopus [no]
 256   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 257   --enable-librsvg         enable SVG rasterization via librsvg [no]
 258   --enable-librubberband   enable rubberband needed for rubberband filter [no]
 259   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 260   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 261   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
 262   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
 263   --enable-libsoxr         enable Include libsoxr resampling [no]
 264   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 265   --enable-libsrt          enable Haivision SRT protocol via libsrt [no]
 266   --enable-libssh          enable SFTP protocol via libssh [no]
 267   --enable-libtensorflow   enable TensorFlow as a DNN module backend
 268                            for DNN based filters like sr [no]
 269   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
 270   --enable-libtheora       enable Theora encoding via libtheora [no]
 271   --enable-libtls          enable LibreSSL (via libtls), needed for https support
 272                            if openssl, gnutls or mbedtls is not used [no]
 273   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 274   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 275   --enable-libvidstab      enable video stabilization using vid.stab [no]
 276   --enable-libvmaf         enable vmaf filter via libvmaf [no]
 277   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 278   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 279                            native implementation exists [no]
 280   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 281   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 282   --enable-libwebp         enable WebP encoding via libwebp [no]
 283   --enable-libx264         enable H.264 encoding via x264 [no]
 284   --enable-libx265         enable HEVC encoding via x265 [no]
 285   --enable-libxavs         enable AVS encoding via xavs [no]
 286   --enable-libxavs2        enable AVS2 encoding via xavs2 [no]
 287   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
 288   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
 289   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
 290   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
 291   --enable-libxvid         enable Xvid encoding via xvidcore,
 292                            native MPEG-4/Xvid encoder exists [no]
 293   --enable-libxml2         enable XML parsing using the C library libxml2, needed
 294                            for dash demuxing support [no]
 295   --enable-libzimg         enable z.lib, needed for zscale filter [no]
 296   --enable-libzmq          enable message passing via libzmq [no]
 297   --enable-libzvbi         enable teletext support via libzvbi [no]
 298   --enable-lv2             enable LV2 audio filtering [no]
 299   --disable-lzma           disable lzma [autodetect]
 300   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
 301   --enable-mbedtls         enable mbedTLS, needed for https support
 302                            if openssl, gnutls or libtls is not used [no]
 303   --enable-mediacodec      enable Android MediaCodec support [no]
 304   --enable-libmysofa       enable libmysofa, needed for sofalizer filter [no]
 305   --enable-openal          enable OpenAL 1.1 capture support [no]
 306   --enable-opencl          enable OpenCL processing [no]
 307   --enable-opengl          enable OpenGL rendering [no]
 308   --enable-openssl         enable openssl, needed for https support
 309                            if gnutls, libtls or mbedtls is not used [no]
 310   --enable-pocketsphinx    enable PocketSphinx, needed for asr filter [no]
 311   --disable-sndio          disable sndio support [autodetect]
 312   --disable-schannel       disable SChannel SSP, needed for TLS support on
 313                            Windows if openssl and gnutls are not used [autodetect]
 314   --disable-sdl2           disable sdl2 [autodetect]
 315   --disable-securetransport disable Secure Transport, needed for TLS support
 316                            on OSX if openssl and gnutls are not used [autodetect]
 317   --enable-vapoursynth     enable VapourSynth demuxer [no]
 318   --disable-xlib           disable xlib [autodetect]
 319   --disable-zlib           disable zlib [autodetect]
 320
 321   The following libraries provide various hardware acceleration features:
 322   --disable-amf            disable AMF video encoding code [autodetect]
 323   --disable-audiotoolbox   disable Apple AudioToolbox code [autodetect]
 324   --enable-cuda-nvcc       enable Nvidia CUDA compiler [no]
 325   --disable-cuda-llvm      disable CUDA compilation using clang [autodetect]
 326   --disable-cuvid          disable Nvidia CUVID support [autodetect]
 327   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
 328   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
 329   --disable-ffnvcodec      disable dynamically linked Nvidia code [autodetect]
 330   --enable-libdrm          enable DRM code (Linux) [no]
 331   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
 332   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
 333   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
 334   --disable-nvdec          disable Nvidia video decoding acceleration (via hwaccel) [autodetect]
 335   --disable-nvenc          disable Nvidia video encoding code [autodetect]
 336   --enable-omx             enable OpenMAX IL code [no]
 337   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
 338   --enable-rkmpp           enable Rockchip Media Process Platform code [no]
 339   --disable-v4l2-m2m       disable V4L2 mem2mem code [autodetect]
 340   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
 341   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
 342   --disable-videotoolbox   disable VideoToolbox code [autodetect]
 343
 344 Toolchain options:
 345   --arch=ARCH              select architecture [$arch]
 346   --cpu=CPU                select the minimum required CPU (affects
 347                            instruction selection, may crash on older CPUs)
 348   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 349   --progs-suffix=SUFFIX    program name suffix []
 350   --enable-cross-compile   assume a cross-compiler is used
 351   --sysroot=PATH           root of cross-build tree
 352   --sysinclude=PATH        location of cross-build system headers
 353   --target-os=OS           compiler targets OS [$target_os]
 354   --target-exec=CMD        command to run executables on target
 355   --target-path=DIR        path to view of build directory on target
 356   --target-samples=DIR     path to samples directory on target
 357   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 358   --toolchain=NAME         set tool defaults according to NAME
 359                            (gcc-asan, clang-asan, gcc-msan, clang-msan,
 360                            gcc-tsan, clang-tsan, gcc-usan, clang-usan,
 361                            valgrind-massif, valgrind-memcheck,
 362                            msvc, icl, gcov, llvm-cov, hardened)
 363   --nm=NM                  use nm tool NM [$nm_default]
 364   --ar=AR                  use archive tool AR [$ar_default]
 365   --as=AS                  use assembler AS [$as_default]
 366   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
 367   --strip=STRIP            use strip tool STRIP [$strip_default]
 368   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 369   --x86asmexe=EXE          use nasm-compatible assembler EXE [$x86asmexe_default]
 370   --cc=CC                  use C compiler CC [$cc_default]
 371   --cxx=CXX                use C compiler CXX [$cxx_default]
 372   --objcc=OCC              use ObjC compiler OCC [$cc_default]
 373   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 374   --nvcc=NVCC              use Nvidia CUDA compiler NVCC or clang [$nvcc_default]
 375   --ld=LD                  use linker LD [$ld_default]
 376   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 377   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 378   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 379   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
 380   --host-cc=HOSTCC         use host C compiler HOSTCC
 381   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 382   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 383   --host-ld=HOSTLD         use host linker HOSTLD
 384   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 385   --host-extralibs=HLIBS   use libs HLIBS when linking for host
 386   --host-os=OS             compiler host OS [$target_os]
 387   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 388   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 389   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
 390   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 391   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 392   --extra-ldsoflags=ELDFLAGS add ELDFLAGS to LDSOFLAGS [$LDSOFLAGS]
 393   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 394   --extra-version=STRING   version string suffix []
 395   --optflags=OPTFLAGS      override optimization-related compiler flags
 396   --nvccflags=NVCCFLAGS    override nvcc flags [$nvccflags_default]
 397   --build-suffix=SUFFIX    library name suffix []
 398   --enable-pic             build position-independent code
 399   --enable-thumb           compile for Thumb instruction set
 400   --enable-lto             use link-time optimization
 401   --env="ENV=override"     override the environment variables
 402
 403 Advanced options (experts only):
 404   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 405   --custom-allocator=NAME  use a supported custom allocator
 406   --disable-symver         disable symbol versioning
 407   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 408   --disable-safe-bitstream-reader
 409                            disable buffer boundary checking in bitreaders
 410                            (faster, but may crash)
 411   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
 412
 413 Optimization options (experts only):
 414   --disable-asm            disable all assembly optimizations
 415   --disable-altivec        disable AltiVec optimizations
 416   --disable-vsx            disable VSX optimizations
 417   --disable-power8         disable POWER8 optimizations
 418   --disable-amd3dnow       disable 3DNow! optimizations
 419   --disable-amd3dnowext    disable 3DNow! extended optimizations
 420   --disable-mmx            disable MMX optimizations
 421   --disable-mmxext         disable MMXEXT optimizations
 422   --disable-sse            disable SSE optimizations
 423   --disable-sse2           disable SSE2 optimizations
 424   --disable-sse3           disable SSE3 optimizations
 425   --disable-ssse3          disable SSSE3 optimizations
 426   --disable-sse4           disable SSE4 optimizations
 427   --disable-sse42          disable SSE4.2 optimizations
 428   --disable-avx            disable AVX optimizations
 429   --disable-xop            disable XOP optimizations
 430   --disable-fma3           disable FMA3 optimizations
 431   --disable-fma4           disable FMA4 optimizations
 432   --disable-avx2           disable AVX2 optimizations
 433   --disable-avx512         disable AVX-512 optimizations
 434   --disable-aesni          disable AESNI optimizations
 435   --disable-armv5te        disable armv5te optimizations
 436   --disable-armv6          disable armv6 optimizations
 437   --disable-armv6t2        disable armv6t2 optimizations
 438   --disable-vfp            disable VFP optimizations
 439   --disable-neon           disable NEON optimizations
 440   --disable-inline-asm     disable use of inline assembly
 441   --disable-x86asm         disable use of standalone x86 assembly
 442   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
 443   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 444   --disable-msa            disable MSA optimizations
 445   --disable-msa2           disable MSA2 optimizations
 446   --disable-mipsfpu        disable floating point MIPS optimizations
 447   --disable-mmi            disable Loongson SIMD optimizations
 448   --disable-fast-unaligned consider unaligned accesses slow
 449
 450 Developer options (useful when working on FFmpeg itself):
 451   --disable-debug          disable debugging symbols
 452   --enable-debug=LEVEL     set the debug level [$debuglevel]
 453   --disable-optimizations  disable compiler optimizations
 454   --enable-extra-warnings  enable more compiler warnings
 455   --disable-stripping      disable stripping of executables and shared libraries
 456   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 457                            2 causes a slowdown at runtime.
 458   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 459   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 460                            leaks and errors, using the specified valgrind binary.
 461                            Cannot be combined with --target-exec
 462   --enable-ftrapv          Trap arithmetic overflows
 463   --samples=PATH           location of test samples for FATE, if not set use
 464                            \$FATE_SAMPLES at make invocation time.
 465   --enable-neon-clobber-test check NEON registers for clobbering (should be
 466                            used only for debugging purposes)
 467   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 468                            should be used only for debugging purposes)
 469   --enable-random          randomly enable/disable components
 470   --disable-random
 471   --enable-random=LIST     randomly enable/disable specific components or
 472   --disable-random=LIST    component groups. LIST is a comma-separated list
 473                            of NAME[:PROB] entries where NAME is a component
 474                            (group) and PROB the probability associated with
 475                            NAME (default 0.5).
 476   --random-seed=VALUE      seed value for --enable/disable-random
 477   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 478                            (only applies to --disable-optimizations builds)
 479   --enable-ossfuzz         Enable building fuzzer tool
 480   --libfuzzer=PATH         path to libfuzzer
 481   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
 482                            in the name) of tests whose result is ignored
 483   --enable-linux-perf      enable Linux Performance Monitor API
 484
 485 NOTE: Object files are built at the place where configure is launched.
 486 EOF
 487   exit 0
 488 }
 489
 490 if test -t 1 && which tput >/dev/null 2>&1; then
 491     ncolors=$(tput colors)
 492     if test -n "$ncolors" && test $ncolors -ge 8; then
 493         bold_color=$(tput bold)
 494         warn_color=$(tput setaf 3)
 495         error_color=$(tput setaf 1)
 496         reset_color=$(tput sgr0)
 497     fi
 498     # 72 used instead of 80 since that's the default of pr
 499     ncols=$(tput cols)
 500 fi
 501 : ${ncols:=72}
 502
 503 log(){
 504     echo "$@" >> $logfile
 505 }
 506
 507 log_file(){
 508     log BEGIN "$1"
 509     log_file_i=1
 510     while IFS= read -r log_file_line; do
 511         printf '%5d\t%s\n' "$log_file_i" "$log_file_line"
 512         log_file_i=$(($log_file_i+1))
 513     done < "$1" >> "$logfile"
 514     log END "$1"
 515 }
 516
 517 warn(){
 518     log "WARNING: $*"
 519     WARNINGS="${WARNINGS}WARNING: $*\n"
 520 }
 521
 522 die(){
 523     log "$@"
 524     echo "$error_color$bold_color$@$reset_color"
 525     cat <<EOF
 526
 527 If you think configure made a mistake, make sure you are using the latest
 528 version from Git.  If the latest version fails, report the problem to the
 529 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 530 EOF
 531     if disabled logging; then
 532         cat <<EOF
 533 Rerun configure with logging enabled (do not use --disable-logging), and
 534 include the log this produces with your report.
 535 EOF
 536     else
 537         cat <<EOF
 538 Include the log file "$logfile" produced by configure as this will help
 539 solve the problem.
 540 EOF
 541     fi
 542     exit 1
 543 }
 544
 545 # Avoid locale weirdness, besides we really just want to translate ASCII.
 546 toupper(){
 547     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 548 }
 549
 550 tolower(){
 551     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 552 }
 553
 554 c_escape(){
 555     echo "$*" | sed 's/["\\]/\\\0/g'
 556 }
 557
 558 sh_quote(){
 559     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 560     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 561     echo "$v"
 562 }
 563
 564 cleanws(){
 565     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
 566 }
 567
 568 filter(){
 569     pat=$1
 570     shift
 571     for v; do
 572         eval "case '$v' in $pat) printf '%s ' '$v' ;; esac"
 573     done
 574 }
 575
 576 filter_out(){
 577     pat=$1
 578     shift
 579     for v; do
 580         eval "case '$v' in $pat) ;; *) printf '%s ' '$v' ;; esac"
 581     done
 582 }
 583
 584 map(){
 585     m=$1
 586     shift
 587     for v; do eval $m; done
 588 }
 589
 590 add_suffix(){
 591     suffix=$1
 592     shift
 593     for v; do echo ${v}${suffix}; done
 594 }
 595
 596 remove_suffix(){
 597     suffix=$1
 598     shift
 599     for v; do echo ${v%$suffix}; done
 600 }
 601
 602 set_all(){
 603     value=$1
 604     shift
 605     for var in $*; do
 606         eval $var=$value
 607     done
 608 }
 609
 610 set_weak(){
 611     value=$1
 612     shift
 613     for var; do
 614         eval : \${$var:=$value}
 615     done
 616 }
 617
 618 sanitize_var_name(){
 619     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 620 }
 621
 622 set_sanitized(){
 623     var=$1
 624     shift
 625     eval $(sanitize_var_name "$var")='$*'
 626 }
 627
 628 get_sanitized(){
 629     eval echo \$$(sanitize_var_name "$1")
 630 }
 631
 632 pushvar(){
 633     for pvar in $*; do
 634         eval level=\${${pvar}_level:=0}
 635         eval ${pvar}_${level}="\$$pvar"
 636         eval ${pvar}_level=$(($level+1))
 637     done
 638 }
 639
 640 popvar(){
 641     for pvar in $*; do
 642         eval level=\${${pvar}_level:-0}
 643         test $level = 0 && continue
 644         eval level=$(($level-1))
 645         eval $pvar="\${${pvar}_${level}}"
 646         eval ${pvar}_level=$level
 647         eval unset ${pvar}_${level}
 648     done
 649 }
 650
 651 request(){
 652     for var in $*; do
 653         eval ${var}_requested=yes
 654         eval $var=
 655     done
 656 }
 657
 658 warn_if_gets_disabled(){
 659     for var in $*; do
 660         WARN_IF_GETS_DISABLED_LIST="$WARN_IF_GETS_DISABLED_LIST $var"
 661     done
 662 }
 663
 664 enable(){
 665     set_all yes $*
 666 }
 667
 668 disable(){
 669     set_all no $*
 670 }
 671
 672 disable_with_reason(){
 673     disable $1
 674     eval "${1}_disable_reason=\"$2\""
 675     if requested $1; then
 676         die "ERROR: $1 requested, but $2"
 677     fi
 678 }
 679
 680 enable_weak(){
 681     set_weak yes $*
 682 }
 683
 684 disable_weak(){
 685     set_weak no $*
 686 }
 687
 688 enable_sanitized(){
 689     for var; do
 690         enable $(sanitize_var_name $var)
 691     done
 692 }
 693
 694 disable_sanitized(){
 695     for var; do
 696         disable $(sanitize_var_name $var)
 697     done
 698 }
 699
 700 do_enable_deep(){
 701     for var; do
 702         enabled $var && continue
 703         set -- $var
 704         eval enable_deep \$${var}_select
 705         var=$1
 706         eval enable_deep_weak \$${var}_suggest
 707     done
 708 }
 709
 710 enable_deep(){
 711     do_enable_deep $*
 712     enable $*
 713 }
 714
 715 enable_deep_weak(){
 716     for var; do
 717         disabled $var && continue
 718         set -- $var
 719         do_enable_deep $var
 720         var=$1
 721         enable_weak $var
 722     done
 723 }
 724
 725 requested(){
 726     test "${1#!}" = "$1" && op="=" || op="!="
 727     eval test "x\$${1#!}_requested" $op "xyes"
 728 }
 729
 730 enabled(){
 731     test "${1#!}" = "$1" && op="=" || op="!="
 732     eval test "x\$${1#!}" $op "xyes"
 733 }
 734
 735 disabled(){
 736     test "${1#!}" = "$1" && op="=" || op="!="
 737     eval test "x\$${1#!}" $op "xno"
 738 }
 739
 740 enabled_all(){
 741     for opt; do
 742         enabled $opt || return 1
 743     done
 744 }
 745
 746 disabled_all(){
 747     for opt; do
 748         disabled $opt || return 1
 749     done
 750 }
 751
 752 enabled_any(){
 753     for opt; do
 754         enabled $opt && return 0
 755     done
 756 }
 757
 758 disabled_any(){
 759     for opt; do
 760         disabled $opt && return 0
 761     done
 762     return 1
 763 }
 764
 765 set_default(){
 766     for opt; do
 767         eval : \${$opt:=\$${opt}_default}
 768     done
 769 }
 770
 771 is_in(){
 772     value=$1
 773     shift
 774     for var in $*; do
 775         [ $var = $value ] && return 0
 776     done
 777     return 1
 778 }
 779
 780 # The cfg loop is very hot (several thousands iterations), and in bash also
 781 # potentialy quite slow. Try to abort the iterations early, preferably without
 782 # calling functions. 70%+ of the time cfg is already done or without deps.
 783 check_deps(){
 784     for cfg; do
 785         eval [ x\$${cfg}_checking = xdone ] && continue
 786         eval [ x\$${cfg}_checking = xinprogress ] && die "Circular dependency for $cfg."
 787
 788         eval "
 789         dep_all=\$${cfg}_deps
 790         dep_any=\$${cfg}_deps_any
 791         dep_con=\$${cfg}_conflict
 792         dep_sel=\$${cfg}_select
 793         dep_sgs=\$${cfg}_suggest
 794         dep_ifa=\$${cfg}_if
 795         dep_ifn=\$${cfg}_if_any
 796         "
 797
 798         # most of the time here $cfg has no deps - avoid costly no-op work
 799         if [ "$dep_all$dep_any$dep_con$dep_sel$dep_sgs$dep_ifa$dep_ifn" ]; then
 800             eval ${cfg}_checking=inprogress
 801
 802             set -- $cfg "$dep_all" "$dep_any" "$dep_con" "$dep_sel" "$dep_sgs" "$dep_ifa" "$dep_ifn"
 803             check_deps $dep_all $dep_any $dep_con $dep_sel $dep_sgs $dep_ifa $dep_ifn
 804             cfg=$1; dep_all=$2; dep_any=$3; dep_con=$4; dep_sel=$5 dep_sgs=$6; dep_ifa=$7; dep_ifn=$8
 805
 806             [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 807             [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 808             enabled_all  $dep_all || { disable_with_reason $cfg "not all dependencies are satisfied: $dep_all"; }
 809             enabled_any  $dep_any || { disable_with_reason $cfg "not any dependency is satisfied: $dep_any"; }
 810             disabled_all $dep_con || { disable_with_reason $cfg "some conflicting dependencies are unsatisfied: $dep_con"; }
 811             disabled_any $dep_sel && { disable_with_reason $cfg "some selected dependency is unsatisfied: $dep_sel"; }
 812
 813             enabled $cfg && enable_deep_weak $dep_sel $dep_sgs
 814
 815             for dep in $dep_all $dep_any $dep_sel $dep_sgs; do
 816                 # filter out library deps, these do not belong in extralibs
 817                 is_in $dep $LIBRARY_LIST && continue
 818                 enabled $dep && eval append ${cfg}_extralibs ${dep}_extralibs
 819             done
 820         fi
 821
 822         eval ${cfg}_checking=done
 823     done
 824 }
 825
 826 print_config(){
 827     pfx=$1
 828     files=$2
 829     shift 2
 830     map 'eval echo "$v \${$v:-no}"' "$@" |
 831     awk "BEGIN { split(\"$files\", files) }
 832         {
 833             c = \"$pfx\" toupper(\$1);
 834             v = \$2;
 835             sub(/yes/, 1, v);
 836             sub(/no/,  0, v);
 837             for (f in files) {
 838                 file = files[f];
 839                 if (file ~ /\\.h\$/) {
 840                     printf(\"#define %s %d\\n\", c, v) >>file;
 841                 } else if (file ~ /\\.asm\$/) {
 842                     printf(\"%%define %s %d\\n\", c, v) >>file;
 843                 } else if (file ~ /\\.mak\$/) {
 844                     n = -v ? \"\" : \"!\";
 845                     printf(\"%s%s=yes\\n\", n, c) >>file;
 846                 } else if (file ~ /\\.texi\$/) {
 847                     pre = -v ? \"\" : \"@c \";
 848                     yesno = \$2;
 849                     c2 = tolower(c);
 850                     gsub(/_/, \"-\", c2);
 851                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 852                 }
 853             }
 854         }"
 855 }
 856
 857 print_enabled(){
 858     suf=$1
 859     shift
 860     for v; do
 861         enabled $v && printf "%s\n" ${v%$suf}
 862     done
 863 }
 864
 865 append(){
 866     var=$1
 867     shift
 868     eval "$var=\"\$$var $*\""
 869 }
 870
 871 prepend(){
 872     var=$1
 873     shift
 874     eval "$var=\"$* \$$var\""
 875 }
 876
 877 reverse () {
 878     eval '
 879         reverse_out=
 880         for v in $'$1'; do
 881             reverse_out="$v $reverse_out"
 882         done
 883         '$1'=$reverse_out
 884     '
 885 }
 886
 887 # keeps the last occurence of each non-unique item
 888 unique(){
 889     unique_out=
 890     eval unique_in=\$$1
 891     reverse unique_in
 892     for v in $unique_in; do
 893         # " $unique_out" +space such that every item is surrounded with spaces
 894         case " $unique_out" in *" $v "*) continue; esac  # already in list
 895         unique_out="$unique_out$v "
 896     done
 897     reverse unique_out
 898     eval $1=\$unique_out
 899 }
 900
 901 resolve(){
 902     resolve_out=
 903     eval resolve_in=\$$1
 904     for v in $resolve_in; do
 905         eval 'resolve_out="$resolve_out$'$v' "'
 906     done
 907     eval $1=\$resolve_out
 908 }
 909
 910 add_cppflags(){
 911     append CPPFLAGS "$@"
 912 }
 913
 914 add_cflags(){
 915     append CFLAGS $($cflags_filter "$@")
 916 }
 917
 918 add_cflags_headers(){
 919     append CFLAGS_HEADERS $($cflags_filter "$@")
 920 }
 921
 922 add_cxxflags(){
 923     append CXXFLAGS $($cflags_filter "$@")
 924 }
 925
 926 add_objcflags(){
 927     append OBJCFLAGS $($objcflags_filter "$@")
 928 }
 929
 930 add_asflags(){
 931     append ASFLAGS $($asflags_filter "$@")
 932 }
 933
 934 add_ldflags(){
 935     append LDFLAGS $($ldflags_filter "$@")
 936 }
 937
 938 add_ldexeflags(){
 939     append LDEXEFLAGS $($ldflags_filter "$@")
 940 }
 941
 942 add_ldsoflags(){
 943     append LDSOFLAGS $($ldflags_filter "$@")
 944 }
 945
 946 add_extralibs(){
 947     prepend extralibs $($ldflags_filter "$@")
 948 }
 949
 950 add_stripflags(){
 951     append ASMSTRIPFLAGS "$@"
 952 }
 953
 954 add_host_cppflags(){
 955     append host_cppflags "$@"
 956 }
 957
 958 add_host_cflags(){
 959     append host_cflags $($host_cflags_filter "$@")
 960 }
 961
 962 add_host_ldflags(){
 963     append host_ldflags $($host_ldflags_filter "$@")
 964 }
 965
 966 add_compat(){
 967     append compat_objs $1
 968     shift
 969     map 'add_cppflags -D$v' "$@"
 970 }
 971
 972 test_cmd(){
 973     log "$@"
 974     "$@" >> $logfile 2>&1
 975 }
 976
 977 test_stat(){
 978     log test_stat "$@"
 979     stat "$1" >> $logfile 2>&1
 980 }
 981
 982 cc_e(){
 983     eval printf '%s\\n' $CC_E
 984 }
 985
 986 cc_o(){
 987     eval printf '%s\\n' $CC_O
 988 }
 989
 990 as_o(){
 991     eval printf '%s\\n' $AS_O
 992 }
 993
 994 x86asm_o(){
 995     eval printf '%s\\n' $X86ASM_O
 996 }
 997
 998 ld_o(){
 999     eval printf '%s\\n' $LD_O
1000 }
1001
1002 hostcc_e(){
1003     eval printf '%s\\n' $HOSTCC_E
1004 }
1005
1006 hostcc_o(){
1007     eval printf '%s\\n' $HOSTCC_O
1008 }
1009
1010 nvcc_o(){
1011     eval printf '%s\\n' $NVCC_O
1012 }
1013
1014 test_cc(){
1015     log test_cc "$@"
1016     cat > $TMPC
1017     log_file $TMPC
1018     test_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
1019 }
1020
1021 test_cxx(){
1022     log test_cxx "$@"
1023     cat > $TMPCPP
1024     log_file $TMPCPP
1025     test_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
1026 }
1027
1028 test_objcc(){
1029     log test_objcc "$@"
1030     cat > $TMPM
1031     log_file $TMPM
1032     test_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
1033 }
1034
1035 test_nvcc(){
1036     log test_nvcc "$@"
1037     cat > $TMPCU
1038     log_file $TMPCU
1039     tmpcu_=$TMPCU
1040     tmpo_=$TMPO
1041     [ -x "$(command -v cygpath)" ] && tmpcu_=$(cygpath -m $tmpcu_) && tmpo_=$(cygpath -m $tmpo_)
1042     test_cmd $nvcc $nvccflags "$@" $NVCC_C $(nvcc_o $tmpo_) $tmpcu_
1043 }
1044
1045 check_nvcc() {
1046     log check_nvcc "$@"
1047     name=$1
1048     shift 1
1049     disabled $name && return
1050     disable $name
1051     test_nvcc "$@" <<EOF && enable $name
1052 extern "C" {
1053     __global__ void hello(unsigned char *data) {}
1054 }
1055 EOF
1056 }
1057
1058 test_cpp(){
1059     log test_cpp "$@"
1060     cat > $TMPC
1061     log_file $TMPC
1062     test_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
1063 }
1064
1065 test_as(){
1066     log test_as "$@"
1067     cat > $TMPS
1068     log_file $TMPS
1069     test_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
1070 }
1071
1072 test_x86asm(){
1073     log test_x86asm "$@"
1074     echo "$1" > $TMPASM
1075     log_file $TMPASM
1076     shift
1077     test_cmd $x86asmexe $X86ASMFLAGS -Werror "$@" $(x86asm_o $TMPO) $TMPASM
1078 }
1079
1080 check_cmd(){
1081     log check_cmd "$@"
1082     cmd=$1
1083     disabled $cmd && return
1084     disable $cmd
1085     test_cmd $@ && enable $cmd
1086 }
1087
1088 check_as(){
1089     log check_as "$@"
1090     name=$1
1091     code=$2
1092     shift 2
1093     disable $name
1094     test_as $@ <<EOF && enable $name
1095 $code
1096 EOF
1097 }
1098
1099 check_inline_asm(){
1100     log check_inline_asm "$@"
1101     name="$1"
1102     code="$2"
1103     shift 2
1104     disable $name
1105     test_cc "$@" <<EOF && enable $name
1106 void foo(void){ __asm__ volatile($code); }
1107 EOF
1108 }
1109
1110 check_inline_asm_flags(){
1111     log check_inline_asm_flags "$@"
1112     name="$1"
1113     code="$2"
1114     flags=''
1115     shift 2
1116     while [ "$1" != "" ]; do
1117       append flags $1
1118       shift
1119     done;
1120     disable $name
1121     cat > $TMPC <<EOF
1122 void foo(void){ __asm__ volatile($code); }
1123 EOF
1124     log_file $TMPC
1125     test_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
1126     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
1127 }
1128
1129 check_insn(){
1130     log check_insn "$@"
1131     check_inline_asm ${1}_inline "\"$2\""
1132     check_as ${1}_external "$2"
1133 }
1134
1135 check_x86asm(){
1136     log check_x86asm "$@"
1137     name=$1
1138     shift
1139     disable $name
1140     test_x86asm "$@" && enable $name
1141 }
1142
1143 test_ld(){
1144     log test_ld "$@"
1145     type=$1
1146     shift 1
1147     flags=$(filter_out '-l*|*.so' $@)
1148     libs=$(filter '-l*|*.so' $@)
1149     test_$type $($cflags_filter $flags) || return
1150     flags=$($ldflags_filter $flags)
1151     libs=$($ldflags_filter $libs)
1152     test_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
1153 }
1154
1155 check_ld(){
1156     log check_ld "$@"
1157     type=$1
1158     name=$2
1159     shift 2
1160     disable $name
1161     test_ld $type $@ && enable $name
1162 }
1163
1164 print_include(){
1165     hdr=$1
1166     test "${hdr%.h}" = "${hdr}" &&
1167         echo "#include $hdr"    ||
1168         echo "#include <$hdr>"
1169 }
1170
1171 test_code(){
1172     log test_code "$@"
1173     check=$1
1174     headers=$2
1175     code=$3
1176     shift 3
1177     {
1178         for hdr in $headers; do
1179             print_include $hdr
1180         done
1181         echo "int main(void) { $code; return 0; }"
1182     } | test_$check "$@"
1183 }
1184
1185 check_cppflags(){
1186     log check_cppflags "$@"
1187     test_cpp "$@" <<EOF && append CPPFLAGS "$@"
1188 #include <stdlib.h>
1189 EOF
1190 }
1191
1192 test_cflags(){
1193     log test_cflags "$@"
1194     set -- $($cflags_filter "$@")
1195     test_cc "$@" <<EOF
1196 int x;
1197 EOF
1198 }
1199
1200 check_cflags(){
1201     log check_cflags "$@"
1202     test_cflags "$@" && add_cflags "$@"
1203 }
1204
1205 check_cxxflags(){
1206     log check_cxxflags "$@"
1207     set -- $($cflags_filter "$@")
1208     test_cxx "$@" <<EOF && append CXXFLAGS "$@"
1209 int x;
1210 EOF
1211 }
1212
1213 test_objcflags(){
1214     log test_objcflags "$@"
1215     set -- $($objcflags_filter "$@")
1216     test_objcc "$@" <<EOF
1217 int x;
1218 EOF
1219 }
1220
1221 check_objcflags(){
1222     log check_objcflags "$@"
1223     test_objcflags "$@" && add_objcflags "$@"
1224 }
1225
1226 test_ldflags(){
1227     log test_ldflags "$@"
1228     set -- $($ldflags_filter "$@")
1229     test_ld "cc" "$@" <<EOF
1230 int main(void){ return 0; }
1231 EOF
1232 }
1233
1234 check_ldflags(){
1235     log check_ldflags "$@"
1236     test_ldflags "$@" && add_ldflags "$@"
1237 }
1238
1239 test_stripflags(){
1240     log test_stripflags "$@"
1241     # call test_cc to get a fresh TMPO
1242     test_cc <<EOF
1243 int main(void) { return 0; }
1244 EOF
1245     test_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1246 }
1247
1248 check_stripflags(){
1249     log check_stripflags "$@"
1250     test_stripflags "$@" && add_stripflags "$@"
1251 }
1252
1253 check_headers(){
1254     log check_headers "$@"
1255     headers=$1
1256     shift
1257     disable_sanitized $headers
1258     {
1259         for hdr in $headers; do
1260             print_include $hdr
1261         done
1262         echo "int x;"
1263     } | test_cpp "$@" && enable_sanitized $headers
1264 }
1265
1266 check_header_objcc(){
1267     log check_header_objcc "$@"
1268     rm -f -- "$TMPO"
1269     header=$1
1270     shift
1271     disable_sanitized $header
1272     {
1273        echo "#include <$header>"
1274        echo "int main(void) { return 0; }"
1275     } | test_objcc && test_stat "$TMPO" && enable_sanitized $header
1276 }
1277
1278 check_apple_framework(){
1279     log check_apple_framework "$@"
1280     framework="$1"
1281     name="$(tolower $framework)"
1282     header="${framework}/${framework}.h"
1283     disable $name
1284     check_header_objcc $header &&
1285         enable $name && eval ${name}_extralibs='"-framework $framework"'
1286 }
1287
1288 check_func(){
1289     log check_func "$@"
1290     func=$1
1291     shift
1292     disable $func
1293     test_ld "cc" "$@" <<EOF && enable $func
1294 extern int $func();
1295 int main(void){ $func(); }
1296 EOF
1297 }
1298
1299 check_complexfunc(){
1300     log check_complexfunc "$@"
1301     func=$1
1302     narg=$2
1303     shift 2
1304     test $narg = 2 && args="f, g" || args="f * I"
1305     disable $func
1306     test_ld "cc" "$@" <<EOF && enable $func
1307 #include <complex.h>
1308 #include <math.h>
1309 float foo(complex float f, complex float g) { return $func($args); }
1310 int main(void){ return (int) foo; }
1311 EOF
1312 }
1313
1314 check_mathfunc(){
1315     log check_mathfunc "$@"
1316     func=$1
1317     narg=$2
1318     shift 2
1319     test $narg = 2 && args="f, g" || args="f"
1320     disable $func
1321     test_ld "cc" "$@" <<EOF && enable $func
1322 #include <math.h>
1323 float foo(float f, float g) { return $func($args); }
1324 int main(void){ return (int) foo; }
1325 EOF
1326 }
1327
1328 check_func_headers(){
1329     log check_func_headers "$@"
1330     headers=$1
1331     funcs=$2
1332     shift 2
1333     {
1334         for hdr in $headers; do
1335             print_include $hdr
1336         done
1337         echo "#include <stdint.h>"
1338         for func in $funcs; do
1339             echo "long check_$func(void) { return (long) $func; }"
1340         done
1341         echo "int main(void) { int ret = 0;"
1342         # LTO could optimize out the test functions without this
1343         for func in $funcs; do
1344             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1345         done
1346         echo "return ret; }"
1347     } | test_ld "cc" "$@" && enable $funcs && enable_sanitized $headers
1348 }
1349
1350 check_class_headers_cpp(){
1351     log check_class_headers_cpp "$@"
1352     headers=$1
1353     classes=$2
1354     shift 2
1355     {
1356         for hdr in $headers; do
1357             echo "#include <$hdr>"
1358         done
1359         echo "int main(void) { "
1360         i=1
1361         for class in $classes; do
1362             echo "$class obj$i;"
1363             i=$(expr $i + 1)
1364         done
1365         echo "return 0; }"
1366     } | test_ld "cxx" "$@" && enable $funcs && enable_sanitized $headers
1367 }
1368
1369 test_cpp_condition(){
1370     log test_cpp_condition "$@"
1371     header=$1
1372     condition=$2
1373     shift 2
1374     test_cpp "$@" <<EOF
1375 #include <$header>
1376 #if !($condition)
1377 #error "unsatisfied condition: $condition"
1378 #endif
1379 EOF
1380 }
1381
1382 check_cpp_condition(){
1383     log check_cpp_condition "$@"
1384     name=$1
1385     shift 1
1386     disable $name
1387     test_cpp_condition "$@" && enable $name
1388 }
1389
1390 test_cflags_cc(){
1391     log test_cflags_cc "$@"
1392     flags=$1
1393     header=$2
1394     condition=$3
1395     shift 3
1396     set -- $($cflags_filter "$flags")
1397     test_cc "$@" <<EOF
1398 #include <$header>
1399 #if !($condition)
1400 #error "unsatisfied condition: $condition"
1401 #endif
1402 EOF
1403 }
1404
1405 check_lib(){
1406     log check_lib "$@"
1407     name="$1"
1408     headers="$2"
1409     funcs="$3"
1410     shift 3
1411     disable $name
1412     check_func_headers "$headers" "$funcs" "$@" &&
1413         enable $name && eval ${name}_extralibs="\$@"
1414 }
1415
1416 check_lib_cpp(){
1417     log check_lib_cpp "$@"
1418     name="$1"
1419     headers="$2"
1420     classes="$3"
1421     shift 3
1422     disable $name
1423     check_class_headers_cpp "$headers" "$classes" "$@" &&
1424         enable $name && eval ${name}_extralibs="\$@"
1425 }
1426
1427 test_pkg_config(){
1428     log test_pkg_config "$@"
1429     name="$1"
1430     pkg_version="$2"
1431     pkg="${2%% *}"
1432     headers="$3"
1433     funcs="$4"
1434     shift 4
1435     disable $name
1436     test_cmd $pkg_config --exists --print-errors $pkg_version || return
1437     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1438     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1439     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1440         enable $name &&
1441         set_sanitized "${name}_cflags"    $pkg_cflags &&
1442         set_sanitized "${name}_extralibs" $pkg_libs
1443 }
1444
1445 check_pkg_config(){
1446     log check_pkg_config "$@"
1447     name="$1"
1448     test_pkg_config "$@" &&
1449         eval add_cflags \$${name}_cflags
1450 }
1451
1452 test_exec(){
1453     test_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1454 }
1455
1456 check_exec_crash(){
1457     log check_exec_crash "$@"
1458     code=$(cat)
1459
1460     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1461     # are safe but may not be available everywhere.  Thus we use
1462     # raise(SIGTERM) instead.  The check is run in a subshell so we
1463     # can redirect the "Terminated" message from the shell.  SIGBUS
1464     # is not defined by standard C so it is used conditionally.
1465
1466     (test_exec "$@") >> $logfile 2>&1 <<EOF
1467 #include <signal.h>
1468 static void sighandler(int sig){
1469     raise(SIGTERM);
1470 }
1471 int foo(void){
1472     $code
1473 }
1474 int (*func_ptr)(void) = foo;
1475 int main(void){
1476     signal(SIGILL, sighandler);
1477     signal(SIGFPE, sighandler);
1478     signal(SIGSEGV, sighandler);
1479 #ifdef SIGBUS
1480     signal(SIGBUS, sighandler);
1481 #endif
1482     return func_ptr();
1483 }
1484 EOF
1485 }
1486
1487 check_type(){
1488     log check_type "$@"
1489     headers=$1
1490     type=$2
1491     shift 2
1492     disable_sanitized "$type"
1493     test_code cc "$headers" "$type v" "$@" && enable_sanitized "$type"
1494 }
1495
1496 check_struct(){
1497     log check_struct "$@"
1498     headers=$1
1499     struct=$2
1500     member=$3
1501     shift 3
1502     disable_sanitized "${struct}_${member}"
1503     test_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1504         enable_sanitized "${struct}_${member}"
1505 }
1506
1507 check_builtin(){
1508     log check_builtin "$@"
1509     name=$1
1510     headers=$2
1511     builtin=$3
1512     shift 3
1513     disable "$name"
1514     test_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1515 }
1516
1517 check_compile_assert(){
1518     log check_compile_assert "$@"
1519     name=$1
1520     headers=$2
1521     condition=$3
1522     shift 3
1523     disable "$name"
1524     test_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1525 }
1526
1527 check_cc(){
1528     log check_cc "$@"
1529     name=$1
1530     shift
1531     disable "$name"
1532     test_code cc "$@" && enable "$name"
1533 }
1534
1535 require(){
1536     log require "$@"
1537     name_version="$1"
1538     name="${1%% *}"
1539     shift
1540     check_lib $name "$@" || die "ERROR: $name_version not found"
1541 }
1542
1543 require_cc(){
1544     log require_cc "$@"
1545     name="$1"
1546     check_cc "$@" || die "ERROR: $name failed"
1547 }
1548
1549 require_cpp(){
1550     name="$1"
1551     headers="$2"
1552     classes="$3"
1553     shift 3
1554     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1555 }
1556
1557 require_headers(){
1558     log require_headers "$@"
1559     headers="$1"
1560     check_headers "$@" || die "ERROR: $headers not found"
1561 }
1562
1563 require_cpp_condition(){
1564     log require_cpp_condition "$@"
1565     condition="$3"
1566     check_cpp_condition "$@" || die "ERROR: $condition not satisfied"
1567 }
1568
1569 require_pkg_config(){
1570     log require_pkg_config "$@"
1571     pkg_version="$2"
1572     check_pkg_config "$@" || die "ERROR: $pkg_version not found using pkg-config$pkg_config_fail_message"
1573 }
1574
1575 test_host_cc(){
1576     log test_host_cc "$@"
1577     cat > $TMPC
1578     log_file $TMPC
1579     test_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1580 }
1581
1582 test_host_cpp(){
1583     log test_host_cpp "$@"
1584     cat > $TMPC
1585     log_file $TMPC
1586     test_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1587 }
1588
1589 check_host_cppflags(){
1590     log check_host_cppflags "$@"
1591     test_host_cpp "$@" <<EOF && append host_cppflags "$@"
1592 #include <stdlib.h>
1593 EOF
1594 }
1595
1596 check_host_cflags(){
1597     log check_host_cflags "$@"
1598     set -- $($host_cflags_filter "$@")
1599     test_host_cc "$@" <<EOF && append host_cflags "$@"
1600 int x;
1601 EOF
1602 }
1603
1604 test_host_cpp_condition(){
1605     log test_host_cpp_condition "$@"
1606     header=$1
1607     condition=$2
1608     shift 2
1609     test_host_cpp "$@" <<EOF
1610 #include <$header>
1611 #if !($condition)
1612 #error "unsatisfied condition: $condition"
1613 #endif
1614 EOF
1615 }
1616
1617 check_host_cpp_condition(){
1618     log check_host_cpp_condition "$@"
1619     name=$1
1620     shift 1
1621     disable $name
1622     test_host_cpp_condition "$@" && enable $name
1623 }
1624
1625 cp_if_changed(){
1626     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1627     mkdir -p "$(dirname $2)"
1628     cp -f "$1" "$2"
1629 }
1630
1631 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1632 # system-dependent things.
1633
1634 AVCODEC_COMPONENTS="
1635     bsfs
1636     decoders
1637     encoders
1638     hwaccels
1639     parsers
1640 "
1641
1642 AVDEVICE_COMPONENTS="
1643     indevs
1644     outdevs
1645 "
1646
1647 AVFILTER_COMPONENTS="
1648     filters
1649 "
1650
1651 AVFORMAT_COMPONENTS="
1652     demuxers
1653     muxers
1654     protocols
1655 "
1656
1657 COMPONENT_LIST="
1658     $AVCODEC_COMPONENTS
1659     $AVDEVICE_COMPONENTS
1660     $AVFILTER_COMPONENTS
1661     $AVFORMAT_COMPONENTS
1662 "
1663
1664 EXAMPLE_LIST="
1665     avio_dir_cmd_example
1666     avio_reading_example
1667     decode_audio_example
1668     decode_video_example
1669     demuxing_decoding_example
1670     encode_audio_example
1671     encode_video_example
1672     extract_mvs_example
1673     filter_audio_example
1674     filtering_audio_example
1675     filtering_video_example
1676     http_multiclient_example
1677     hw_decode_example
1678     metadata_example
1679     muxing_example
1680     qsvdec_example
1681     remuxing_example
1682     resampling_audio_example
1683     scaling_video_example
1684     transcode_aac_example
1685     transcoding_example
1686     vaapi_encode_example
1687     vaapi_transcode_example
1688 "
1689
1690 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1691     alsa
1692     appkit
1693     avfoundation
1694     bzlib
1695     coreimage
1696     iconv
1697     libxcb
1698     libxcb_shm
1699     libxcb_shape
1700     libxcb_xfixes
1701     lzma
1702     schannel
1703     sdl2
1704     securetransport
1705     sndio
1706     xlib
1707     zlib
1708 "
1709
1710 EXTERNAL_LIBRARY_GPL_LIST="
1711     avisynth
1712     frei0r
1713     libcdio
1714     libdavs2
1715     librubberband
1716     libvidstab
1717     libx264
1718     libx265
1719     libxavs
1720     libxavs2
1721     libxvid
1722 "
1723
1724 EXTERNAL_LIBRARY_NONFREE_LIST="
1725     decklink
1726     libfdk_aac
1727     openssl
1728     libtls
1729 "
1730
1731 EXTERNAL_LIBRARY_VERSION3_LIST="
1732     gmp
1733     libaribb24
1734     liblensfun
1735     libopencore_amrnb
1736     libopencore_amrwb
1737     libvmaf
1738     libvo_amrwbenc
1739     mbedtls
1740     rkmpp
1741 "
1742
1743 EXTERNAL_LIBRARY_GPLV3_LIST="
1744     libsmbclient
1745 "
1746
1747 EXTERNAL_LIBRARY_LIST="
1748     $EXTERNAL_LIBRARY_GPL_LIST
1749     $EXTERNAL_LIBRARY_NONFREE_LIST
1750     $EXTERNAL_LIBRARY_VERSION3_LIST
1751     $EXTERNAL_LIBRARY_GPLV3_LIST
1752     chromaprint
1753     gcrypt
1754     gnutls
1755     jni
1756     ladspa
1757     libaom
1758     libass
1759     libbluray
1760     libbs2b
1761     libcaca
1762     libcelt
1763     libcodec2
1764     libdav1d
1765     libdc1394
1766     libdrm
1767     libflite
1768     libfontconfig
1769     libfreetype
1770     libfribidi
1771     libgme
1772     libgsm
1773     libiec61883
1774     libilbc
1775     libjack
1776     libklvanc
1777     libkvazaar
1778     libmodplug
1779     libmp3lame
1780     libmysofa
1781     libopencv
1782     libopenh264
1783     libopenjpeg
1784     libopenmpt
1785     libopus
1786     libpulse
1787     librsvg
1788     librtmp
1789     libshine
1790     libsmbclient
1791     libsnappy
1792     libsoxr
1793     libspeex
1794     libsrt
1795     libssh
1796     libtensorflow
1797     libtesseract
1798     libtheora
1799     libtwolame
1800     libv4l2
1801     libvorbis
1802     libvpx
1803     libwavpack
1804     libwebp
1805     libxml2
1806     libzimg
1807     libzmq
1808     libzvbi
1809     lv2
1810     mediacodec
1811     openal
1812     opengl
1813     pocketsphinx
1814     vapoursynth
1815 "
1816
1817 HWACCEL_AUTODETECT_LIBRARY_LIST="
1818     amf
1819     audiotoolbox
1820     crystalhd
1821     cuda
1822     cuda_llvm
1823     cuvid
1824     d3d11va
1825     dxva2
1826     ffnvcodec
1827     nvdec
1828     nvenc
1829     vaapi
1830     vdpau
1831     videotoolbox
1832     v4l2_m2m
1833     xvmc
1834 "
1835
1836 # catchall list of things that require external libs to link
1837 EXTRALIBS_LIST="
1838     cpu_init
1839     cws2fws
1840 "
1841
1842 HWACCEL_LIBRARY_NONFREE_LIST="
1843     cuda_nvcc
1844     cuda_sdk
1845     libnpp
1846 "
1847
1848 HWACCEL_LIBRARY_LIST="
1849     $HWACCEL_LIBRARY_NONFREE_LIST
1850     libmfx
1851     mmal
1852     omx
1853     opencl
1854 "
1855
1856 DOCUMENT_LIST="
1857     doc
1858     htmlpages
1859     manpages
1860     podpages
1861     txtpages
1862 "
1863
1864 FEATURE_LIST="
1865     ftrapv
1866     gray
1867     hardcoded_tables
1868     omx_rpi
1869     runtime_cpudetect
1870     safe_bitstream_reader
1871     shared
1872     small
1873     static
1874     swscale_alpha
1875 "
1876
1877 # this list should be kept in linking order
1878 LIBRARY_LIST="
1879     avdevice
1880     avfilter
1881     swscale
1882     postproc
1883     avformat
1884     avcodec
1885     swresample
1886     avresample
1887     avutil
1888 "
1889
1890 LICENSE_LIST="
1891     gpl
1892     nonfree
1893     version3
1894 "
1895
1896 PROGRAM_LIST="
1897     ffplay
1898     ffprobe
1899     ffmpeg
1900 "
1901
1902 SUBSYSTEM_LIST="
1903     dct
1904     dwt
1905     error_resilience
1906     faan
1907     fast_unaligned
1908     fft
1909     lsp
1910     lzo
1911     mdct
1912     pixelutils
1913     network
1914     rdft
1915 "
1916
1917 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1918 CONFIG_LIST="
1919     $DOCUMENT_LIST
1920     $EXAMPLE_LIST
1921     $EXTERNAL_LIBRARY_LIST
1922     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1923     $HWACCEL_LIBRARY_LIST
1924     $HWACCEL_AUTODETECT_LIBRARY_LIST
1925     $FEATURE_LIST
1926     $LICENSE_LIST
1927     $LIBRARY_LIST
1928     $PROGRAM_LIST
1929     $SUBSYSTEM_LIST
1930     autodetect
1931     fontconfig
1932     linux_perf
1933     memory_poisoning
1934     neon_clobber_test
1935     ossfuzz
1936     pic
1937     thumb
1938     valgrind_backtrace
1939     xmm_clobber_test
1940     $COMPONENT_LIST
1941 "
1942
1943 THREADS_LIST="
1944     pthreads
1945     os2threads
1946     w32threads
1947 "
1948
1949 ATOMICS_LIST="
1950     atomics_gcc
1951     atomics_suncc
1952     atomics_win32
1953 "
1954
1955 AUTODETECT_LIBS="
1956     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1957     $HWACCEL_AUTODETECT_LIBRARY_LIST
1958     $THREADS_LIST
1959 "
1960
1961 ARCH_LIST="
1962     aarch64
1963     alpha
1964     arm
1965     avr32
1966     avr32_ap
1967     avr32_uc
1968     bfin
1969     ia64
1970     m68k
1971     mips
1972     mips64
1973     parisc
1974     ppc
1975     ppc64
1976     s390
1977     sh4
1978     sparc
1979     sparc64
1980     tilegx
1981     tilepro
1982     tomi
1983     x86
1984     x86_32
1985     x86_64
1986 "
1987
1988 ARCH_EXT_LIST_ARM="
1989     armv5te
1990     armv6
1991     armv6t2
1992     armv8
1993     neon
1994     vfp
1995     vfpv3
1996     setend
1997 "
1998
1999 ARCH_EXT_LIST_MIPS="
2000     mipsfpu
2001     mips32r2
2002     mips32r5
2003     mips64r2
2004     mips32r6
2005     mips64r6
2006     mipsdsp
2007     mipsdspr2
2008     msa
2009     msa2
2010 "
2011
2012 ARCH_EXT_LIST_LOONGSON="
2013     loongson2
2014     loongson3
2015     mmi
2016 "
2017
2018 ARCH_EXT_LIST_X86_SIMD="
2019     aesni
2020     amd3dnow
2021     amd3dnowext
2022     avx
2023     avx2
2024     avx512
2025     fma3
2026     fma4
2027     mmx
2028     mmxext
2029     sse
2030     sse2
2031     sse3
2032     sse4
2033     sse42
2034     ssse3
2035     xop
2036 "
2037
2038 ARCH_EXT_LIST_PPC="
2039     altivec
2040     dcbzl
2041     ldbrx
2042     power8
2043     ppc4xx
2044     vsx
2045 "
2046
2047 ARCH_EXT_LIST_X86="
2048     $ARCH_EXT_LIST_X86_SIMD
2049     cpunop
2050     i686
2051 "
2052
2053 ARCH_EXT_LIST="
2054     $ARCH_EXT_LIST_ARM
2055     $ARCH_EXT_LIST_PPC
2056     $ARCH_EXT_LIST_X86
2057     $ARCH_EXT_LIST_MIPS
2058     $ARCH_EXT_LIST_LOONGSON
2059 "
2060
2061 ARCH_FEATURES="
2062     aligned_stack
2063     fast_64bit
2064     fast_clz
2065     fast_cmov
2066     local_aligned
2067     simd_align_16
2068     simd_align_32
2069     simd_align_64
2070 "
2071
2072 BUILTIN_LIST="
2073     atomic_cas_ptr
2074     machine_rw_barrier
2075     MemoryBarrier
2076     mm_empty
2077     rdtsc
2078     sem_timedwait
2079     sync_val_compare_and_swap
2080 "
2081 HAVE_LIST_CMDLINE="
2082     inline_asm
2083     symver
2084     x86asm
2085 "
2086
2087 HAVE_LIST_PUB="
2088     bigendian
2089     fast_unaligned
2090 "
2091
2092 HEADERS_LIST="
2093     arpa_inet_h
2094     asm_types_h
2095     cdio_paranoia_h
2096     cdio_paranoia_paranoia_h
2097     cuda_h
2098     dispatch_dispatch_h
2099     dev_bktr_ioctl_bt848_h
2100     dev_bktr_ioctl_meteor_h
2101     dev_ic_bt8xx_h
2102     dev_video_bktr_ioctl_bt848_h
2103     dev_video_meteor_ioctl_meteor_h
2104     direct_h
2105     dirent_h
2106     dxgidebug_h
2107     dxva_h
2108     ES2_gl_h
2109     gsm_h
2110     io_h
2111     linux_perf_event_h
2112     machine_ioctl_bt848_h
2113     machine_ioctl_meteor_h
2114     malloc_h
2115     opencv2_core_core_c_h
2116     OpenGL_gl3_h
2117     poll_h
2118     sys_param_h
2119     sys_resource_h
2120     sys_select_h
2121     sys_soundcard_h
2122     sys_time_h
2123     sys_un_h
2124     sys_videoio_h
2125     termios_h
2126     udplite_h
2127     unistd_h
2128     valgrind_valgrind_h
2129     windows_h
2130     winsock2_h
2131 "
2132
2133 INTRINSICS_LIST="
2134     intrinsics_neon
2135 "
2136
2137 COMPLEX_FUNCS="
2138     cabs
2139     cexp
2140 "
2141
2142 MATH_FUNCS="
2143     atanf
2144     atan2f
2145     cbrt
2146     cbrtf
2147     copysign
2148     cosf
2149     erf
2150     exp2
2151     exp2f
2152     expf
2153     hypot
2154     isfinite
2155     isinf
2156     isnan
2157     ldexpf
2158     llrint
2159     llrintf
2160     log2
2161     log2f
2162     log10f
2163     lrint
2164     lrintf
2165     powf
2166     rint
2167     round
2168     roundf
2169     sinf
2170     trunc
2171     truncf
2172 "
2173
2174 SYSTEM_FEATURES="
2175     dos_paths
2176     libc_msvcrt
2177     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2178     section_data_rel_ro
2179     threads
2180     uwp
2181     winrt
2182 "
2183
2184 SYSTEM_FUNCS="
2185     access
2186     aligned_malloc
2187     arc4random
2188     clock_gettime
2189     closesocket
2190     CommandLineToArgvW
2191     fcntl
2192     getaddrinfo
2193     gethrtime
2194     getopt
2195     GetProcessAffinityMask
2196     GetProcessMemoryInfo
2197     GetProcessTimes
2198     getrusage
2199     GetSystemTimeAsFileTime
2200     gettimeofday
2201     glob
2202     glXGetProcAddress
2203     gmtime_r
2204     inet_aton
2205     isatty
2206     kbhit
2207     localtime_r
2208     lstat
2209     lzo1x_999_compress
2210     mach_absolute_time
2211     MapViewOfFile
2212     memalign
2213     mkstemp
2214     mmap
2215     mprotect
2216     nanosleep
2217     PeekNamedPipe
2218     posix_memalign
2219     pthread_cancel
2220     sched_getaffinity
2221     SecItemImport
2222     SetConsoleTextAttribute
2223     SetConsoleCtrlHandler
2224     setmode
2225     setrlimit
2226     Sleep
2227     strerror_r
2228     sysconf
2229     sysctl
2230     usleep
2231     UTGetOSTypeFromString
2232     VirtualAlloc
2233     wglGetProcAddress
2234 "
2235
2236 SYSTEM_LIBRARIES="
2237     bcrypt
2238     vaapi_drm
2239     vaapi_x11
2240     vdpau_x11
2241 "
2242
2243 TOOLCHAIN_FEATURES="
2244     as_arch_directive
2245     as_dn_directive
2246     as_fpu_directive
2247     as_func
2248     as_object_arch
2249     asm_mod_q
2250     blocks_extension
2251     ebp_available
2252     ebx_available
2253     gnu_as
2254     gnu_windres
2255     ibm_asm
2256     inline_asm_direct_symbol_refs
2257     inline_asm_labels
2258     inline_asm_nonlocal_labels
2259     pragma_deprecated
2260     rsync_contimeout
2261     symver_asm_label
2262     symver_gnu_asm
2263     vfp_args
2264     xform_asm
2265     xmm_clobbers
2266 "
2267
2268 TYPES_LIST="
2269     kCMVideoCodecType_HEVC
2270     kCVPixelFormatType_420YpCbCr10BiPlanarVideoRange
2271     kCVImageBufferTransferFunction_SMPTE_ST_2084_PQ
2272     kCVImageBufferTransferFunction_ITU_R_2100_HLG
2273     kCVImageBufferTransferFunction_Linear
2274     socklen_t
2275     struct_addrinfo
2276     struct_group_source_req
2277     struct_ip_mreq_source
2278     struct_ipv6_mreq
2279     struct_msghdr_msg_flags
2280     struct_pollfd
2281     struct_rusage_ru_maxrss
2282     struct_sctp_event_subscribe
2283     struct_sockaddr_in6
2284     struct_sockaddr_sa_len
2285     struct_sockaddr_storage
2286     struct_stat_st_mtim_tv_nsec
2287     struct_v4l2_frmivalenum_discrete
2288 "
2289
2290 HAVE_LIST="
2291     $ARCH_EXT_LIST
2292     $(add_suffix _external $ARCH_EXT_LIST)
2293     $(add_suffix _inline   $ARCH_EXT_LIST)
2294     $ARCH_FEATURES
2295     $BUILTIN_LIST
2296     $COMPLEX_FUNCS
2297     $HAVE_LIST_CMDLINE
2298     $HAVE_LIST_PUB
2299     $HEADERS_LIST
2300     $INTRINSICS_LIST
2301     $MATH_FUNCS
2302     $SYSTEM_FEATURES
2303     $SYSTEM_FUNCS
2304     $SYSTEM_LIBRARIES
2305     $THREADS_LIST
2306     $TOOLCHAIN_FEATURES
2307     $TYPES_LIST
2308     makeinfo
2309     makeinfo_html
2310     opencl_d3d11
2311     opencl_drm_arm
2312     opencl_drm_beignet
2313     opencl_dxva2
2314     opencl_vaapi_beignet
2315     opencl_vaapi_intel_media
2316     perl
2317     pod2man
2318     texi2html
2319 "
2320
2321 # options emitted with CONFIG_ prefix but not available on the command line
2322 CONFIG_EXTRA="
2323     aandcttables
2324     ac3dsp
2325     adts_header
2326     audio_frame_queue
2327     audiodsp
2328     blockdsp
2329     bswapdsp
2330     cabac
2331     cbs
2332     cbs_av1
2333     cbs_h264
2334     cbs_h265
2335     cbs_jpeg
2336     cbs_mpeg2
2337     cbs_vp9
2338     dirac_parse
2339     dnn
2340     dvprofile
2341     exif
2342     faandct
2343     faanidct
2344     fdctdsp
2345     flacdsp
2346     fmtconvert
2347     frame_thread_encoder
2348     g722dsp
2349     golomb
2350     gplv3
2351     h263dsp
2352     h264chroma
2353     h264dsp
2354     h264parse
2355     h264pred
2356     h264qpel
2357     hevcparse
2358     hpeldsp
2359     huffman
2360     huffyuvdsp
2361     huffyuvencdsp
2362     idctdsp
2363     iirfilter
2364     mdct15
2365     intrax8
2366     iso_media
2367     ividsp
2368     jpegtables
2369     lgplv3
2370     libx262
2371     llauddsp
2372     llviddsp
2373     llvidencdsp
2374     lpc
2375     lzf
2376     me_cmp
2377     mpeg_er
2378     mpegaudio
2379     mpegaudiodsp
2380     mpegaudioheader
2381     mpegvideo
2382     mpegvideoenc
2383     mss34dsp
2384     pixblockdsp
2385     qpeldsp
2386     qsv
2387     qsvdec
2388     qsvenc
2389     qsvvpp
2390     rangecoder
2391     riffdec
2392     riffenc
2393     rtpdec
2394     rtpenc_chain
2395     rv34dsp
2396     scene_sad
2397     sinewin
2398     snappy
2399     srtp
2400     startcode
2401     texturedsp
2402     texturedspenc
2403     tpeldsp
2404     vaapi_1
2405     vaapi_encode
2406     vc1dsp
2407     videodsp
2408     vp3dsp
2409     vp56dsp
2410     vp8dsp
2411     wma_freqs
2412     wmv2dsp
2413 "
2414
2415 CMDLINE_SELECT="
2416     $ARCH_EXT_LIST
2417     $CONFIG_LIST
2418     $HAVE_LIST_CMDLINE
2419     $THREADS_LIST
2420     asm
2421     cross_compile
2422     debug
2423     extra_warnings
2424     logging
2425     lto
2426     optimizations
2427     rpath
2428     stripping
2429 "
2430
2431 PATHS_LIST="
2432     bindir
2433     datadir
2434     docdir
2435     incdir
2436     libdir
2437     mandir
2438     pkgconfigdir
2439     prefix
2440     shlibdir
2441     install_name_dir
2442 "
2443
2444 CMDLINE_SET="
2445     $PATHS_LIST
2446     ar
2447     arch
2448     as
2449     assert_level
2450     build_suffix
2451     cc
2452     objcc
2453     cpu
2454     cross_prefix
2455     custom_allocator
2456     cxx
2457     dep_cc
2458     doxygen
2459     env
2460     extra_version
2461     gas
2462     host_cc
2463     host_cflags
2464     host_extralibs
2465     host_ld
2466     host_ldflags
2467     host_os
2468     ignore_tests
2469     install
2470     ld
2471     ln_s
2472     logfile
2473     malloc_prefix
2474     nm
2475     optflags
2476     nvcc
2477     nvccflags
2478     pkg_config
2479     pkg_config_flags
2480     progs_suffix
2481     random_seed
2482     ranlib
2483     samples
2484     strip
2485     sws_max_filter_size
2486     sysinclude
2487     sysroot
2488     target_exec
2489     target_os
2490     target_path
2491     target_samples
2492     tempprefix
2493     toolchain
2494     valgrind
2495     windres
2496     x86asmexe
2497 "
2498
2499 CMDLINE_APPEND="
2500     extra_cflags
2501     extra_cxxflags
2502     extra_objcflags
2503     host_cppflags
2504 "
2505
2506 # code dependency declarations
2507
2508 # architecture extensions
2509
2510 armv5te_deps="arm"
2511 armv6_deps="arm"
2512 armv6t2_deps="arm"
2513 armv8_deps="aarch64"
2514 neon_deps_any="aarch64 arm"
2515 intrinsics_neon_deps="neon"
2516 vfp_deps_any="aarch64 arm"
2517 vfpv3_deps="vfp"
2518 setend_deps="arm"
2519
2520 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2521
2522 altivec_deps="ppc"
2523 dcbzl_deps="ppc"
2524 ldbrx_deps="ppc"
2525 ppc4xx_deps="ppc"
2526 vsx_deps="altivec"
2527 power8_deps="vsx"
2528
2529 loongson2_deps="mips"
2530 loongson3_deps="mips"
2531 mips32r2_deps="mips"
2532 mips32r5_deps="mips"
2533 mips32r6_deps="mips"
2534 mips64r2_deps="mips"
2535 mips64r6_deps="mips"
2536 mipsfpu_deps="mips"
2537 mipsdsp_deps="mips"
2538 mipsdspr2_deps="mips"
2539 mmi_deps="mips"
2540 msa_deps="mipsfpu"
2541 msa2_deps="msa"
2542
2543 cpunop_deps="i686"
2544 x86_64_select="i686"
2545 x86_64_suggest="fast_cmov"
2546
2547 amd3dnow_deps="mmx"
2548 amd3dnowext_deps="amd3dnow"
2549 i686_deps="x86"
2550 mmx_deps="x86"
2551 mmxext_deps="mmx"
2552 sse_deps="mmxext"
2553 sse2_deps="sse"
2554 sse3_deps="sse2"
2555 ssse3_deps="sse3"
2556 sse4_deps="ssse3"
2557 sse42_deps="sse4"
2558 aesni_deps="sse42"
2559 avx_deps="sse42"
2560 xop_deps="avx"
2561 fma3_deps="avx"
2562 fma4_deps="avx"
2563 avx2_deps="avx"
2564 avx512_deps="avx2"
2565
2566 mmx_external_deps="x86asm"
2567 mmx_inline_deps="inline_asm x86"
2568 mmx_suggest="mmx_external mmx_inline"
2569
2570 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2571     eval dep=\$${ext}_deps
2572     eval ${ext}_external_deps='"${dep}_external"'
2573     eval ${ext}_inline_deps='"${dep}_inline"'
2574     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2575 done
2576
2577 aligned_stack_if_any="aarch64 ppc x86"
2578 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2579 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2580 fast_unaligned_if_any="aarch64 ppc x86"
2581 simd_align_16_if_any="altivec neon sse"
2582 simd_align_32_if_any="avx"
2583 simd_align_64_if_any="avx512"
2584
2585 # system capabilities
2586 linux_perf_deps="linux_perf_event_h"
2587 symver_if_any="symver_asm_label symver_gnu_asm"
2588 valgrind_backtrace_conflict="optimizations"
2589 valgrind_backtrace_deps="valgrind_valgrind_h"
2590
2591 # threading support
2592 atomics_gcc_if="sync_val_compare_and_swap"
2593 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2594 atomics_win32_if="MemoryBarrier"
2595 atomics_native_if_any="$ATOMICS_LIST"
2596 w32threads_deps="atomics_native"
2597 threads_if_any="$THREADS_LIST"
2598
2599 # subsystems
2600 cbs_av1_select="cbs"
2601 cbs_h264_select="cbs"
2602 cbs_h265_select="cbs"
2603 cbs_jpeg_select="cbs"
2604 cbs_mpeg2_select="cbs"
2605 cbs_vp9_select="cbs"
2606 dct_select="rdft"
2607 dirac_parse_select="golomb"
2608 dnn_suggest="libtensorflow"
2609 error_resilience_select="me_cmp"
2610 faandct_deps="faan"
2611 faandct_select="fdctdsp"
2612 faanidct_deps="faan"
2613 faanidct_select="idctdsp"
2614 h264dsp_select="startcode"
2615 hevcparse_select="golomb"
2616 frame_thread_encoder_deps="encoders threads"
2617 intrax8_select="blockdsp idctdsp"
2618 mdct_select="fft"
2619 mdct15_select="fft"
2620 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2621 mpeg_er_select="error_resilience"
2622 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2623 mpegaudiodsp_select="dct"
2624 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2625 mpegvideoenc_select="aandcttables me_cmp mpegvideo pixblockdsp qpeldsp"
2626 vc1dsp_select="h264chroma qpeldsp startcode"
2627 rdft_select="fft"
2628
2629 # decoders / encoders
2630 aac_decoder_select="adts_header mdct15 mdct sinewin"
2631 aac_fixed_decoder_select="adts_header mdct sinewin"
2632 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2633 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2634 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2635 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2636 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2637 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2638 adpcm_g722_decoder_select="g722dsp"
2639 adpcm_g722_encoder_select="g722dsp"
2640 aic_decoder_select="golomb idctdsp"
2641 alac_encoder_select="lpc"
2642 als_decoder_select="bswapdsp"
2643 amrnb_decoder_select="lsp"
2644 amrwb_decoder_select="lsp"
2645 amv_decoder_select="sp5x_decoder exif"
2646 amv_encoder_select="jpegtables mpegvideoenc"
2647 ape_decoder_select="bswapdsp llauddsp"
2648 apng_decoder_deps="zlib"
2649 apng_encoder_deps="zlib"
2650 apng_encoder_select="llvidencdsp"
2651 aptx_decoder_select="audio_frame_queue"
2652 aptx_encoder_select="audio_frame_queue"
2653 aptx_hd_decoder_select="audio_frame_queue"
2654 aptx_hd_encoder_select="audio_frame_queue"
2655 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2656 asv1_encoder_select="aandcttables bswapdsp fdctdsp pixblockdsp"
2657 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2658 asv2_encoder_select="aandcttables bswapdsp fdctdsp pixblockdsp"
2659 atrac1_decoder_select="mdct sinewin"
2660 atrac3_decoder_select="mdct"
2661 atrac3p_decoder_select="mdct sinewin"
2662 atrac9_decoder_select="mdct"
2663 avrn_decoder_select="exif jpegtables"
2664 bink_decoder_select="blockdsp hpeldsp"
2665 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2666 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2667 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2668 clearvideo_decoder_select="idctdsp"
2669 cllc_decoder_select="bswapdsp"
2670 comfortnoise_encoder_select="lpc"
2671 cook_decoder_select="audiodsp mdct sinewin"
2672 cscd_decoder_select="lzo"
2673 cscd_decoder_suggest="zlib"
2674 dca_decoder_select="mdct"
2675 dds_decoder_select="texturedsp"
2676 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2677 dnxhd_decoder_select="blockdsp idctdsp"
2678 dnxhd_encoder_select="blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2679 dolby_e_decoder_select="mdct"
2680 dvvideo_decoder_select="dvprofile idctdsp"
2681 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2682 dxa_decoder_deps="zlib"
2683 dxv_decoder_select="lzf texturedsp"
2684 eac3_decoder_select="ac3_decoder"
2685 eac3_encoder_select="ac3_encoder"
2686 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2687 eatgq_decoder_select="aandcttables"
2688 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2689 exr_decoder_deps="zlib"
2690 ffv1_decoder_select="rangecoder"
2691 ffv1_encoder_select="rangecoder"
2692 ffvhuff_decoder_select="huffyuv_decoder"
2693 ffvhuff_encoder_select="huffyuv_encoder"
2694 fic_decoder_select="golomb"
2695 flac_decoder_select="flacdsp"
2696 flac_encoder_select="bswapdsp flacdsp lpc"
2697 flashsv2_decoder_deps="zlib"
2698 flashsv2_encoder_deps="zlib"
2699 flashsv_decoder_deps="zlib"
2700 flashsv_encoder_deps="zlib"
2701 flv_decoder_select="h263_decoder"
2702 flv_encoder_select="h263_encoder"
2703 fourxm_decoder_select="blockdsp bswapdsp"
2704 fraps_decoder_select="bswapdsp huffman"
2705 g2m_decoder_deps="zlib"
2706 g2m_decoder_select="blockdsp idctdsp jpegtables"
2707 g729_decoder_select="audiodsp"
2708 h261_decoder_select="mpegvideo"
2709 h261_encoder_select="mpegvideoenc"
2710 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2711 h263_encoder_select="h263dsp mpegvideoenc"
2712 h263i_decoder_select="h263_decoder"
2713 h263p_decoder_select="h263_decoder"
2714 h263p_encoder_select="h263_encoder"
2715 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2716 h264_decoder_suggest="error_resilience"
2717 hap_decoder_select="snappy texturedsp"
2718 hap_encoder_deps="libsnappy"
2719 hap_encoder_select="texturedspenc"
2720 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2721 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2722 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2723 hymt_decoder_select="huffyuv_decoder"
2724 iac_decoder_select="imc_decoder"
2725 imc_decoder_select="bswapdsp fft mdct sinewin"
2726 imm5_decoder_select="h264_decoder hevc_decoder"
2727 indeo3_decoder_select="hpeldsp"
2728 indeo4_decoder_select="ividsp"
2729 indeo5_decoder_select="ividsp"
2730 interplay_video_decoder_select="hpeldsp"
2731 jpegls_decoder_select="mjpeg_decoder"
2732 jv_decoder_select="blockdsp"
2733 lagarith_decoder_select="llviddsp"
2734 ljpeg_encoder_select="idctdsp jpegtables mpegvideoenc"
2735 lscr_decoder_deps="zlib"
2736 magicyuv_decoder_select="llviddsp"
2737 magicyuv_encoder_select="llvidencdsp"
2738 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2739 metasound_decoder_select="lsp mdct sinewin"
2740 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2741 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2742 mjpeg_encoder_select="jpegtables mpegvideoenc"
2743 mjpegb_decoder_select="mjpeg_decoder"
2744 mlp_decoder_select="mlp_parser"
2745 mlp_encoder_select="lpc audio_frame_queue"
2746 motionpixels_decoder_select="bswapdsp"
2747 mp1_decoder_select="mpegaudio"
2748 mp1float_decoder_select="mpegaudio"
2749 mp2_decoder_select="mpegaudio"
2750 mp2float_decoder_select="mpegaudio"
2751 mp3_decoder_select="mpegaudio"
2752 mp3adu_decoder_select="mpegaudio"
2753 mp3adufloat_decoder_select="mpegaudio"
2754 mp3float_decoder_select="mpegaudio"
2755 mp3on4_decoder_select="mpegaudio"
2756 mp3on4float_decoder_select="mpegaudio"
2757 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2758 mpc8_decoder_select="mpegaudiodsp"
2759 mpegvideo_decoder_select="mpegvideo"
2760 mpeg1video_decoder_select="mpegvideo"
2761 mpeg1video_encoder_select="mpegvideoenc h263dsp"
2762 mpeg2video_decoder_select="mpegvideo"
2763 mpeg2video_encoder_select="mpegvideoenc h263dsp"
2764 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2765 mpeg4_encoder_select="h263_encoder"
2766 msa1_decoder_select="mss34dsp"
2767 mscc_decoder_deps="zlib"
2768 msmpeg4v1_decoder_select="h263_decoder"
2769 msmpeg4v2_decoder_select="h263_decoder"
2770 msmpeg4v2_encoder_select="h263_encoder"
2771 msmpeg4v3_decoder_select="h263_decoder"
2772 msmpeg4v3_encoder_select="h263_encoder"
2773 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2774 mts2_decoder_select="mss34dsp"
2775 mwsc_decoder_deps="zlib"
2776 mxpeg_decoder_select="mjpeg_decoder"
2777 nellymoser_decoder_select="mdct sinewin"
2778 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2779 nuv_decoder_select="idctdsp lzo"
2780 on2avc_decoder_select="mdct"
2781 opus_decoder_deps="swresample"
2782 opus_decoder_select="mdct15"
2783 opus_encoder_select="audio_frame_queue mdct15"
2784 png_decoder_deps="zlib"
2785 png_encoder_deps="zlib"
2786 png_encoder_select="llvidencdsp"
2787 prores_decoder_select="blockdsp idctdsp"
2788 prores_encoder_select="fdctdsp"
2789 qcelp_decoder_select="lsp"
2790 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2791 ra_144_decoder_select="audiodsp"
2792 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2793 ralf_decoder_select="golomb"
2794 rasc_decoder_deps="zlib"
2795 rawvideo_decoder_select="bswapdsp"
2796 rscc_decoder_deps="zlib"
2797 rtjpeg_decoder_select="me_cmp"
2798 rv10_decoder_select="h263_decoder"
2799 rv10_encoder_select="h263_encoder"
2800 rv20_decoder_select="h263_decoder"
2801 rv20_encoder_select="h263_encoder"
2802 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2803 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2804 screenpresso_decoder_deps="zlib"
2805 shorten_decoder_select="bswapdsp"
2806 sipr_decoder_select="lsp"
2807 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2808 snow_encoder_select="dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2809 sonic_decoder_select="golomb rangecoder"
2810 sonic_encoder_select="golomb rangecoder"
2811 sonic_ls_encoder_select="golomb rangecoder"
2812 sp5x_decoder_select="mjpeg_decoder"
2813 speedhq_decoder_select="mpegvideo"
2814 srgc_decoder_deps="zlib"
2815 svq1_decoder_select="hpeldsp"
2816 svq1_encoder_select="hpeldsp me_cmp mpegvideoenc"
2817 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2818 svq3_decoder_suggest="zlib"
2819 tak_decoder_select="audiodsp"
2820 tdsc_decoder_deps="zlib"
2821 tdsc_decoder_select="mjpeg_decoder"
2822 theora_decoder_select="vp3_decoder"
2823 thp_decoder_select="mjpeg_decoder"
2824 tiff_decoder_select="mjpeg_decoder"
2825 tiff_decoder_suggest="zlib lzma"
2826 tiff_encoder_suggest="zlib"
2827 truehd_decoder_select="mlp_parser"
2828 truehd_encoder_select="lpc audio_frame_queue"
2829 truemotion2_decoder_select="bswapdsp"
2830 truespeech_decoder_select="bswapdsp"
2831 tscc_decoder_deps="zlib"
2832 twinvq_decoder_select="mdct lsp sinewin"
2833 txd_decoder_select="texturedsp"
2834 utvideo_decoder_select="bswapdsp llviddsp"
2835 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2836 vble_decoder_select="llviddsp"
2837 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2838 vc1image_decoder_select="vc1_decoder"
2839 vorbis_decoder_select="mdct"
2840 vorbis_encoder_select="audio_frame_queue mdct"
2841 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2842 vp4_decoder_select="vp3_decoder"
2843 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2844 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2845 vp6a_decoder_select="vp6_decoder"
2846 vp6f_decoder_select="vp6_decoder"
2847 vp7_decoder_select="h264pred videodsp vp8dsp"
2848 vp8_decoder_select="h264pred videodsp vp8dsp"
2849 vp9_decoder_select="videodsp vp9_parser vp9_superframe_split_bsf"
2850 wcmv_decoder_deps="zlib"
2851 webp_decoder_select="vp8_decoder exif"
2852 wmalossless_decoder_select="llauddsp"
2853 wmapro_decoder_select="mdct sinewin wma_freqs"
2854 wmav1_decoder_select="mdct sinewin wma_freqs"
2855 wmav1_encoder_select="mdct sinewin wma_freqs"
2856 wmav2_decoder_select="mdct sinewin wma_freqs"
2857 wmav2_encoder_select="mdct sinewin wma_freqs"
2858 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2859 wmv1_decoder_select="h263_decoder"
2860 wmv1_encoder_select="h263_encoder"
2861 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2862 wmv2_encoder_select="h263_encoder wmv2dsp"
2863 wmv3_decoder_select="vc1_decoder"
2864 wmv3image_decoder_select="wmv3_decoder"
2865 xma1_decoder_select="wmapro_decoder"
2866 xma2_decoder_select="wmapro_decoder"
2867 zerocodec_decoder_deps="zlib"
2868 zlib_decoder_deps="zlib"
2869 zlib_encoder_deps="zlib"
2870 zmbv_decoder_deps="zlib"
2871 zmbv_encoder_deps="zlib"
2872
2873 # hardware accelerators
2874 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2875 cuda_deps="ffnvcodec"
2876 cuvid_deps="ffnvcodec"
2877 d3d11va_deps="dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2878 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32 user32"
2879 ffnvcodec_deps_any="libdl LoadLibrary"
2880 nvdec_deps="ffnvcodec"
2881 vaapi_x11_deps="xlib"
2882 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2883 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2884 xvmc_deps="X11_extensions_XvMClib_h"
2885
2886 h263_vaapi_hwaccel_deps="vaapi"
2887 h263_vaapi_hwaccel_select="h263_decoder"
2888 h263_videotoolbox_hwaccel_deps="videotoolbox"
2889 h263_videotoolbox_hwaccel_select="h263_decoder"
2890 h264_d3d11va_hwaccel_deps="d3d11va"
2891 h264_d3d11va_hwaccel_select="h264_decoder"
2892 h264_d3d11va2_hwaccel_deps="d3d11va"
2893 h264_d3d11va2_hwaccel_select="h264_decoder"
2894 h264_dxva2_hwaccel_deps="dxva2"
2895 h264_dxva2_hwaccel_select="h264_decoder"
2896 h264_nvdec_hwaccel_deps="nvdec"
2897 h264_nvdec_hwaccel_select="h264_decoder"
2898 h264_vaapi_hwaccel_deps="vaapi"
2899 h264_vaapi_hwaccel_select="h264_decoder"
2900 h264_vdpau_hwaccel_deps="vdpau"
2901 h264_vdpau_hwaccel_select="h264_decoder"
2902 h264_videotoolbox_hwaccel_deps="videotoolbox"
2903 h264_videotoolbox_hwaccel_select="h264_decoder"
2904 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2905 hevc_d3d11va_hwaccel_select="hevc_decoder"
2906 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2907 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2908 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2909 hevc_dxva2_hwaccel_select="hevc_decoder"
2910 hevc_nvdec_hwaccel_deps="nvdec"
2911 hevc_nvdec_hwaccel_select="hevc_decoder"
2912 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2913 hevc_vaapi_hwaccel_select="hevc_decoder"
2914 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2915 hevc_vdpau_hwaccel_select="hevc_decoder"
2916 hevc_videotoolbox_hwaccel_deps="videotoolbox"
2917 hevc_videotoolbox_hwaccel_select="hevc_decoder"
2918 mjpeg_nvdec_hwaccel_deps="nvdec"
2919 mjpeg_nvdec_hwaccel_select="mjpeg_decoder"
2920 mjpeg_vaapi_hwaccel_deps="vaapi"
2921 mjpeg_vaapi_hwaccel_select="mjpeg_decoder"
2922 mpeg_xvmc_hwaccel_deps="xvmc"
2923 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2924 mpeg1_nvdec_hwaccel_deps="nvdec"
2925 mpeg1_nvdec_hwaccel_select="mpeg1video_decoder"
2926 mpeg1_vdpau_hwaccel_deps="vdpau"
2927 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2928 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2929 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2930 mpeg1_xvmc_hwaccel_deps="xvmc"
2931 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2932 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2933 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2934 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2935 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2936 mpeg2_dxva2_hwaccel_deps="dxva2"
2937 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2938 mpeg2_nvdec_hwaccel_deps="nvdec"
2939 mpeg2_nvdec_hwaccel_select="mpeg2video_decoder"
2940 mpeg2_vaapi_hwaccel_deps="vaapi"
2941 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2942 mpeg2_vdpau_hwaccel_deps="vdpau"
2943 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2944 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2945 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2946 mpeg2_xvmc_hwaccel_deps="xvmc"
2947 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2948 mpeg4_nvdec_hwaccel_deps="nvdec"
2949 mpeg4_nvdec_hwaccel_select="mpeg4_decoder"
2950 mpeg4_vaapi_hwaccel_deps="vaapi"
2951 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2952 mpeg4_vdpau_hwaccel_deps="vdpau"
2953 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2954 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2955 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2956 vc1_d3d11va_hwaccel_deps="d3d11va"
2957 vc1_d3d11va_hwaccel_select="vc1_decoder"
2958 vc1_d3d11va2_hwaccel_deps="d3d11va"
2959 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2960 vc1_dxva2_hwaccel_deps="dxva2"
2961 vc1_dxva2_hwaccel_select="vc1_decoder"
2962 vc1_nvdec_hwaccel_deps="nvdec"
2963 vc1_nvdec_hwaccel_select="vc1_decoder"
2964 vc1_vaapi_hwaccel_deps="vaapi"
2965 vc1_vaapi_hwaccel_select="vc1_decoder"
2966 vc1_vdpau_hwaccel_deps="vdpau"
2967 vc1_vdpau_hwaccel_select="vc1_decoder"
2968 vp8_nvdec_hwaccel_deps="nvdec"
2969 vp8_nvdec_hwaccel_select="vp8_decoder"
2970 vp8_vaapi_hwaccel_deps="vaapi"
2971 vp8_vaapi_hwaccel_select="vp8_decoder"
2972 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2973 vp9_d3d11va_hwaccel_select="vp9_decoder"
2974 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2975 vp9_d3d11va2_hwaccel_select="vp9_decoder"
2976 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2977 vp9_dxva2_hwaccel_select="vp9_decoder"
2978 vp9_nvdec_hwaccel_deps="nvdec"
2979 vp9_nvdec_hwaccel_select="vp9_decoder"
2980 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2981 vp9_vaapi_hwaccel_select="vp9_decoder"
2982 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2983 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2984 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2985 wmv3_nvdec_hwaccel_select="vc1_nvdec_hwaccel"
2986 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2987 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2988
2989 # hardware-accelerated codecs
2990 omx_deps="libdl pthreads"
2991 omx_rpi_select="omx"
2992 qsv_deps="libmfx"
2993 qsvdec_select="qsv"
2994 qsvenc_select="qsv"
2995 qsvvpp_select="qsv"
2996 vaapi_encode_deps="vaapi"
2997 v4l2_m2m_deps="linux_videodev2_h sem_timedwait"
2998
2999 hwupload_cuda_filter_deps="ffnvcodec"
3000 scale_npp_filter_deps="ffnvcodec libnpp"
3001 scale_cuda_filter_deps="ffnvcodec"
3002 scale_cuda_filter_deps_any="cuda_nvcc cuda_llvm"
3003 thumbnail_cuda_filter_deps="ffnvcodec"
3004 thumbnail_cuda_filter_deps_any="cuda_nvcc cuda_llvm"
3005 transpose_npp_filter_deps="ffnvcodec libnpp"
3006
3007 amf_deps_any="libdl LoadLibrary"
3008 nvenc_deps="ffnvcodec"
3009 nvenc_deps_any="libdl LoadLibrary"
3010 nvenc_encoder_deps="nvenc"
3011
3012 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
3013 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
3014 h264_amf_encoder_deps="amf"
3015 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
3016 h264_cuvid_decoder_deps="cuvid"
3017 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
3018 h264_mediacodec_decoder_deps="mediacodec"
3019 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
3020 h264_mmal_decoder_deps="mmal"
3021 h264_nvenc_encoder_deps="nvenc"
3022 h264_omx_encoder_deps="omx"
3023 h264_qsv_decoder_select="h264_mp4toannexb_bsf qsvdec"
3024 h264_qsv_encoder_select="qsvenc"
3025 h264_rkmpp_decoder_deps="rkmpp"
3026 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
3027 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
3028 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
3029 h264_v4l2m2m_decoder_select="h264_mp4toannexb_bsf"
3030 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
3031 hevc_amf_encoder_deps="amf"
3032 hevc_cuvid_decoder_deps="cuvid"
3033 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
3034 hevc_mediacodec_decoder_deps="mediacodec"
3035 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
3036 hevc_nvenc_encoder_deps="nvenc"
3037 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf qsvdec"
3038 hevc_qsv_encoder_select="hevcparse qsvenc"
3039 hevc_rkmpp_decoder_deps="rkmpp"
3040 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
3041 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
3042 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
3043 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
3044 hevc_v4l2m2m_decoder_select="hevc_mp4toannexb_bsf"
3045 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
3046 mjpeg_cuvid_decoder_deps="cuvid"
3047 mjpeg_qsv_decoder_select="qsvdec"
3048 mjpeg_qsv_encoder_deps="libmfx"
3049 mjpeg_qsv_encoder_select="qsvenc"
3050 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
3051 mjpeg_vaapi_encoder_select="cbs_jpeg jpegtables vaapi_encode"
3052 mpeg1_cuvid_decoder_deps="cuvid"
3053 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
3054 mpeg2_crystalhd_decoder_select="crystalhd"
3055 mpeg2_cuvid_decoder_deps="cuvid"
3056 mpeg2_mmal_decoder_deps="mmal"
3057 mpeg2_mediacodec_decoder_deps="mediacodec"
3058 mpeg2_qsv_decoder_select="qsvdec"
3059 mpeg2_qsv_encoder_select="qsvenc"
3060 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
3061 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
3062 mpeg4_crystalhd_decoder_select="crystalhd"
3063 mpeg4_cuvid_decoder_deps="cuvid"
3064 mpeg4_mediacodec_decoder_deps="mediacodec"
3065 mpeg4_mmal_decoder_deps="mmal"
3066 mpeg4_omx_encoder_deps="omx"
3067 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
3068 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
3069 msmpeg4_crystalhd_decoder_select="crystalhd"
3070 nvenc_h264_encoder_select="h264_nvenc_encoder"
3071 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
3072 vc1_crystalhd_decoder_select="crystalhd"
3073 vc1_cuvid_decoder_deps="cuvid"
3074 vc1_mmal_decoder_deps="mmal"
3075 vc1_qsv_decoder_select="qsvdec"
3076 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
3077 vp8_cuvid_decoder_deps="cuvid"
3078 vp8_mediacodec_decoder_deps="mediacodec"
3079 vp8_qsv_decoder_select="qsvdec"
3080 vp8_rkmpp_decoder_deps="rkmpp"
3081 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
3082 vp8_vaapi_encoder_select="vaapi_encode"
3083 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
3084 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
3085 vp9_cuvid_decoder_deps="cuvid"
3086 vp9_mediacodec_decoder_deps="mediacodec"
3087 vp9_qsv_decoder_select="qsvdec"
3088 vp9_rkmpp_decoder_deps="rkmpp"
3089 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
3090 vp9_vaapi_encoder_select="vaapi_encode"
3091 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
3092 wmv3_crystalhd_decoder_select="crystalhd"
3093
3094 # parsers
3095 aac_parser_select="adts_header"
3096 av1_parser_select="cbs_av1"
3097 h264_parser_select="golomb h264dsp h264parse"
3098 hevc_parser_select="hevcparse"
3099 mpegaudio_parser_select="mpegaudioheader"
3100 mpegvideo_parser_select="mpegvideo"
3101 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
3102 vc1_parser_select="vc1dsp"
3103
3104 # bitstream_filters
3105 aac_adtstoasc_bsf_select="adts_header"
3106 av1_frame_split_bsf_select="cbs_av1"
3107 av1_metadata_bsf_select="cbs_av1"
3108 eac3_core_bsf_select="ac3_parser"
3109 filter_units_bsf_select="cbs"
3110 h264_metadata_bsf_deps="const_nan"
3111 h264_metadata_bsf_select="cbs_h264"
3112 h264_redundant_pps_bsf_select="cbs_h264"
3113 hevc_metadata_bsf_select="cbs_h265"
3114 mjpeg2jpeg_bsf_select="jpegtables"
3115 mpeg2_metadata_bsf_select="cbs_mpeg2"
3116 trace_headers_bsf_select="cbs"
3117 vp9_metadata_bsf_select="cbs_vp9"
3118
3119 # external libraries
3120 aac_at_decoder_deps="audiotoolbox"
3121 aac_at_decoder_select="aac_adtstoasc_bsf"
3122 ac3_at_decoder_deps="audiotoolbox"
3123 ac3_at_decoder_select="ac3_parser"
3124 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
3125 alac_at_decoder_deps="audiotoolbox"
3126 amr_nb_at_decoder_deps="audiotoolbox"
3127 avisynth_deps_any="libdl LoadLibrary"
3128 avisynth_demuxer_deps="avisynth"
3129 avisynth_demuxer_select="riffdec"
3130 eac3_at_decoder_deps="audiotoolbox"
3131 eac3_at_decoder_select="ac3_parser"
3132 gsm_ms_at_decoder_deps="audiotoolbox"
3133 ilbc_at_decoder_deps="audiotoolbox"
3134 mp1_at_decoder_deps="audiotoolbox"
3135 mp2_at_decoder_deps="audiotoolbox"
3136 mp3_at_decoder_deps="audiotoolbox"
3137 mp1_at_decoder_select="mpegaudioheader"
3138 mp2_at_decoder_select="mpegaudioheader"
3139 mp3_at_decoder_select="mpegaudioheader"
3140 pcm_alaw_at_decoder_deps="audiotoolbox"
3141 pcm_mulaw_at_decoder_deps="audiotoolbox"
3142 qdmc_at_decoder_deps="audiotoolbox"
3143 qdm2_at_decoder_deps="audiotoolbox"
3144 aac_at_encoder_deps="audiotoolbox"
3145 aac_at_encoder_select="audio_frame_queue"
3146 alac_at_encoder_deps="audiotoolbox"
3147 alac_at_encoder_select="audio_frame_queue"
3148 ilbc_at_encoder_deps="audiotoolbox"
3149 ilbc_at_encoder_select="audio_frame_queue"
3150 pcm_alaw_at_encoder_deps="audiotoolbox"
3151 pcm_alaw_at_encoder_select="audio_frame_queue"
3152 pcm_mulaw_at_encoder_deps="audiotoolbox"
3153 pcm_mulaw_at_encoder_select="audio_frame_queue"
3154 chromaprint_muxer_deps="chromaprint"
3155 h264_videotoolbox_encoder_deps="pthreads"
3156 h264_videotoolbox_encoder_select="videotoolbox_encoder"
3157 hevc_videotoolbox_encoder_deps="pthreads"
3158 hevc_videotoolbox_encoder_select="videotoolbox_encoder"
3159 libaom_av1_decoder_deps="libaom"
3160 libaom_av1_encoder_deps="libaom"
3161 libaom_av1_encoder_select="extract_extradata_bsf"
3162 libaribb24_decoder_deps="libaribb24"
3163 libcelt_decoder_deps="libcelt"
3164 libcodec2_decoder_deps="libcodec2"
3165 libcodec2_encoder_deps="libcodec2"
3166 libdav1d_decoder_deps="libdav1d"
3167 libdavs2_decoder_deps="libdavs2"
3168 libfdk_aac_decoder_deps="libfdk_aac"
3169 libfdk_aac_encoder_deps="libfdk_aac"
3170 libfdk_aac_encoder_select="audio_frame_queue"
3171 libgme_demuxer_deps="libgme"
3172 libgsm_decoder_deps="libgsm"
3173 libgsm_encoder_deps="libgsm"
3174 libgsm_ms_decoder_deps="libgsm"
3175 libgsm_ms_encoder_deps="libgsm"
3176 libilbc_decoder_deps="libilbc"
3177 libilbc_encoder_deps="libilbc"
3178 libkvazaar_encoder_deps="libkvazaar"
3179 libmodplug_demuxer_deps="libmodplug"
3180 libmp3lame_encoder_deps="libmp3lame"
3181 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
3182 libopencore_amrnb_decoder_deps="libopencore_amrnb"
3183 libopencore_amrnb_encoder_deps="libopencore_amrnb"
3184 libopencore_amrnb_encoder_select="audio_frame_queue"
3185 libopencore_amrwb_decoder_deps="libopencore_amrwb"
3186 libopenh264_decoder_deps="libopenh264"
3187 libopenh264_decoder_select="h264_mp4toannexb_bsf"
3188 libopenh264_encoder_deps="libopenh264"
3189 libopenjpeg_decoder_deps="libopenjpeg"
3190 libopenjpeg_encoder_deps="libopenjpeg"
3191 libopenmpt_demuxer_deps="libopenmpt"
3192 libopus_decoder_deps="libopus"
3193 libopus_encoder_deps="libopus"
3194 libopus_encoder_select="audio_frame_queue"
3195 librsvg_decoder_deps="librsvg"
3196 libshine_encoder_deps="libshine"
3197 libshine_encoder_select="audio_frame_queue"
3198 libspeex_decoder_deps="libspeex"
3199 libspeex_encoder_deps="libspeex"
3200 libspeex_encoder_select="audio_frame_queue"
3201 libtheora_encoder_deps="libtheora"
3202 libtwolame_encoder_deps="libtwolame"
3203 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
3204 libvorbis_decoder_deps="libvorbis"
3205 libvorbis_encoder_deps="libvorbis libvorbisenc"
3206 libvorbis_encoder_select="audio_frame_queue"
3207 libvpx_vp8_decoder_deps="libvpx"
3208 libvpx_vp8_encoder_deps="libvpx"
3209 libvpx_vp9_decoder_deps="libvpx"
3210 libvpx_vp9_encoder_deps="libvpx"
3211 libwavpack_encoder_deps="libwavpack"
3212 libwavpack_encoder_select="audio_frame_queue"
3213 libwebp_encoder_deps="libwebp"
3214 libwebp_anim_encoder_deps="libwebp"
3215 libx262_encoder_deps="libx262"
3216 libx264_encoder_deps="libx264"
3217 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
3218 libx264rgb_encoder_select="libx264_encoder"
3219 libx265_encoder_deps="libx265"
3220 libxavs_encoder_deps="libxavs"
3221 libxavs2_encoder_deps="libxavs2"
3222 libxvid_encoder_deps="libxvid"
3223 libzvbi_teletext_decoder_deps="libzvbi"
3224 vapoursynth_demuxer_deps="vapoursynth"
3225 videotoolbox_suggest="coreservices"
3226 videotoolbox_deps="corefoundation coremedia corevideo"
3227 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
3228
3229 # demuxers / muxers
3230 ac3_demuxer_select="ac3_parser"
3231 aiff_muxer_select="iso_media"
3232 asf_demuxer_select="riffdec"
3233 asf_o_demuxer_select="riffdec"
3234 asf_muxer_select="riffenc"
3235 asf_stream_muxer_select="asf_muxer"
3236 avi_demuxer_select="iso_media riffdec exif"
3237 avi_muxer_select="riffenc"
3238 caf_demuxer_select="iso_media riffdec"
3239 caf_muxer_select="iso_media"
3240 dash_muxer_select="mp4_muxer"
3241 dash_demuxer_deps="libxml2"
3242 dirac_demuxer_select="dirac_parser"
3243 dts_demuxer_select="dca_parser"
3244 dtshd_demuxer_select="dca_parser"
3245 dv_demuxer_select="dvprofile"
3246 dv_muxer_select="dvprofile"
3247 dxa_demuxer_select="riffdec"
3248 eac3_demuxer_select="ac3_parser"
3249 f4v_muxer_select="mov_muxer"
3250 fifo_muxer_deps="threads"
3251 flac_demuxer_select="flac_parser"
3252 hds_muxer_select="flv_muxer"
3253 hls_muxer_select="mpegts_muxer"
3254 hls_muxer_suggest="gcrypt openssl"
3255 image2_alias_pix_demuxer_select="image2_demuxer"
3256 image2_brender_pix_demuxer_select="image2_demuxer"
3257 ipod_muxer_select="mov_muxer"
3258 ismv_muxer_select="mov_muxer"
3259 ivf_muxer_select="av1_metadata_bsf vp9_superframe_bsf"
3260 matroska_audio_muxer_select="matroska_muxer"
3261 matroska_demuxer_select="iso_media riffdec"
3262 matroska_demuxer_suggest="bzlib lzo zlib"
3263 matroska_muxer_select="iso_media riffenc"
3264 mmf_muxer_select="riffenc"
3265 mov_demuxer_select="iso_media riffdec"
3266 mov_demuxer_suggest="zlib"
3267 mov_muxer_select="iso_media riffenc rtpenc_chain"
3268 mp3_demuxer_select="mpegaudio_parser"
3269 mp3_muxer_select="mpegaudioheader"
3270 mp4_muxer_select="mov_muxer"
3271 mpegts_demuxer_select="iso_media"
3272 mpegts_muxer_select="adts_muxer latm_muxer"
3273 mpegtsraw_demuxer_select="mpegts_demuxer"
3274 mxf_d10_muxer_select="mxf_muxer"
3275 mxf_opatom_muxer_select="mxf_muxer"
3276 nut_muxer_select="riffenc"
3277 nuv_demuxer_select="riffdec"
3278 oga_muxer_select="ogg_muxer"
3279 ogg_demuxer_select="dirac_parse"
3280 ogv_muxer_select="ogg_muxer"
3281 opus_muxer_select="ogg_muxer"
3282 psp_muxer_select="mov_muxer"
3283 rtp_demuxer_select="sdp_demuxer"
3284 rtp_muxer_select="golomb"
3285 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3286 rtsp_demuxer_select="http_protocol rtpdec"
3287 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3288 sap_demuxer_select="sdp_demuxer"
3289 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3290 sdp_demuxer_select="rtpdec"
3291 smoothstreaming_muxer_select="ismv_muxer"
3292 spdif_demuxer_select="adts_header"
3293 spdif_muxer_select="adts_header"
3294 spx_muxer_select="ogg_muxer"
3295 swf_demuxer_suggest="zlib"
3296 tak_demuxer_select="tak_parser"
3297 tg2_muxer_select="mov_muxer"
3298 tgp_muxer_select="mov_muxer"
3299 vobsub_demuxer_select="mpegps_demuxer"
3300 w64_demuxer_select="wav_demuxer"
3301 w64_muxer_select="wav_muxer"
3302 wav_demuxer_select="riffdec"
3303 wav_muxer_select="riffenc"
3304 webm_muxer_select="iso_media riffenc"
3305 webm_dash_manifest_demuxer_select="matroska_demuxer"
3306 wtv_demuxer_select="mpegts_demuxer riffdec"
3307 wtv_muxer_select="mpegts_muxer riffenc"
3308 xmv_demuxer_select="riffdec"
3309 xwma_demuxer_select="riffdec"
3310
3311 # indevs / outdevs
3312 android_camera_indev_deps="android camera2ndk mediandk pthreads"
3313 android_camera_indev_extralibs="-landroid -lcamera2ndk -lmediandk"
3314 alsa_indev_deps="alsa"
3315 alsa_outdev_deps="alsa"
3316 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3317 avfoundation_indev_suggest="coregraphics applicationservices"
3318 avfoundation_indev_extralibs="-framework Foundation"
3319 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3320 caca_outdev_deps="libcaca"
3321 decklink_deps_any="libdl LoadLibrary"
3322 decklink_indev_deps="decklink threads"
3323 decklink_indev_extralibs="-lstdc++"
3324 decklink_outdev_deps="decklink threads"
3325 decklink_outdev_suggest="libklvanc"
3326 decklink_outdev_extralibs="-lstdc++"
3327 dshow_indev_deps="IBaseFilter"
3328 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3329 fbdev_indev_deps="linux_fb_h"
3330 fbdev_outdev_deps="linux_fb_h"
3331 gdigrab_indev_deps="CreateDIBSection"
3332 gdigrab_indev_extralibs="-lgdi32"
3333 gdigrab_indev_select="bmp_decoder"
3334 iec61883_indev_deps="libiec61883"
3335 jack_indev_deps="libjack"
3336 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3337 kmsgrab_indev_deps="libdrm"
3338 lavfi_indev_deps="avfilter"
3339 libcdio_indev_deps="libcdio"
3340 libdc1394_indev_deps="libdc1394"
3341 openal_indev_deps="openal"
3342 opengl_outdev_deps="opengl"
3343 opengl_outdev_suggest="sdl2"
3344 oss_indev_deps_any="sys_soundcard_h"
3345 oss_outdev_deps_any="sys_soundcard_h"
3346 pulse_indev_deps="libpulse"
3347 pulse_outdev_deps="libpulse"
3348 sdl2_outdev_deps="sdl2"
3349 sndio_indev_deps="sndio"
3350 sndio_outdev_deps="sndio"
3351 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3352 v4l2_indev_suggest="libv4l2"
3353 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3354 v4l2_outdev_suggest="libv4l2"
3355 vfwcap_indev_deps="vfw32 vfwcap_defines"
3356 xcbgrab_indev_deps="libxcb"
3357 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3358 xv_outdev_deps="xlib"
3359
3360 # protocols
3361 async_protocol_deps="threads"
3362 bluray_protocol_deps="libbluray"
3363 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3364 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl mbedtls"
3365 ffrtmpcrypt_protocol_select="tcp_protocol"
3366 ffrtmphttp_protocol_conflict="librtmp_protocol"
3367 ffrtmphttp_protocol_select="http_protocol"
3368 ftp_protocol_select="tcp_protocol"
3369 gopher_protocol_select="network"
3370 http_protocol_select="tcp_protocol"
3371 http_protocol_suggest="zlib"
3372 httpproxy_protocol_select="tcp_protocol"
3373 httpproxy_protocol_suggest="zlib"
3374 https_protocol_select="tls_protocol"
3375 https_protocol_suggest="zlib"
3376 icecast_protocol_select="http_protocol"
3377 mmsh_protocol_select="http_protocol"
3378 mmst_protocol_select="network"
3379 rtmp_protocol_conflict="librtmp_protocol"
3380 rtmp_protocol_select="tcp_protocol"
3381 rtmp_protocol_suggest="zlib"
3382 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3383 rtmpe_protocol_suggest="zlib"
3384 rtmps_protocol_conflict="librtmp_protocol"
3385 rtmps_protocol_select="tls_protocol"
3386 rtmps_protocol_suggest="zlib"
3387 rtmpt_protocol_select="ffrtmphttp_protocol"
3388 rtmpt_protocol_suggest="zlib"
3389 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3390 rtmpte_protocol_suggest="zlib"
3391 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3392 rtmpts_protocol_suggest="zlib"
3393 rtp_protocol_select="udp_protocol"
3394 schannel_conflict="openssl gnutls libtls mbedtls"
3395 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3396 sctp_protocol_select="network"
3397 securetransport_conflict="openssl gnutls libtls mbedtls"
3398 srtp_protocol_select="rtp_protocol srtp"
3399 tcp_protocol_select="network"
3400 tls_protocol_deps_any="gnutls openssl schannel securetransport libtls mbedtls"
3401 tls_protocol_select="tcp_protocol"
3402 udp_protocol_select="network"
3403 udplite_protocol_select="network"
3404 unix_protocol_deps="sys_un_h"
3405 unix_protocol_select="network"
3406
3407 # external library protocols
3408 librtmp_protocol_deps="librtmp"
3409 librtmpe_protocol_deps="librtmp"
3410 librtmps_protocol_deps="librtmp"
3411 librtmpt_protocol_deps="librtmp"
3412 librtmpte_protocol_deps="librtmp"
3413 libsmbclient_protocol_deps="libsmbclient gplv3"
3414 libsrt_protocol_deps="libsrt"
3415 libsrt_protocol_select="network"
3416 libssh_protocol_deps="libssh"
3417 libtls_conflict="openssl gnutls mbedtls"
3418 libzmq_protocol_deps="libzmq"
3419 libzmq_protocol_select="network"
3420
3421 # filters
3422 afftdn_filter_deps="avcodec"
3423 afftdn_filter_select="fft"
3424 afftfilt_filter_deps="avcodec"
3425 afftfilt_filter_select="fft"
3426 afir_filter_deps="avcodec"
3427 afir_filter_select="fft"
3428 amovie_filter_deps="avcodec avformat"
3429 aresample_filter_deps="swresample"
3430 asr_filter_deps="pocketsphinx"
3431 ass_filter_deps="libass"
3432 atempo_filter_deps="avcodec"
3433 atempo_filter_select="rdft"
3434 avgblur_opencl_filter_deps="opencl"
3435 azmq_filter_deps="libzmq"
3436 blackframe_filter_deps="gpl"
3437 bm3d_filter_deps="avcodec"
3438 bm3d_filter_select="dct"
3439 boxblur_filter_deps="gpl"
3440 boxblur_opencl_filter_deps="opencl gpl"
3441 bs2b_filter_deps="libbs2b"
3442 colorkey_opencl_filter_deps="opencl"
3443 colormatrix_filter_deps="gpl"
3444 convolution_opencl_filter_deps="opencl"
3445 convolve_filter_deps="avcodec"
3446 convolve_filter_select="fft"
3447 coreimage_filter_deps="coreimage appkit"
3448 coreimage_filter_extralibs="-framework OpenGL"
3449 coreimagesrc_filter_deps="coreimage appkit"
3450 coreimagesrc_filter_extralibs="-framework OpenGL"
3451 cover_rect_filter_deps="avcodec avformat gpl"
3452 cropdetect_filter_deps="gpl"
3453 deconvolve_filter_deps="avcodec"
3454 deconvolve_filter_select="fft"
3455 deinterlace_qsv_filter_deps="libmfx"
3456 deinterlace_vaapi_filter_deps="vaapi"
3457 delogo_filter_deps="gpl"
3458 denoise_vaapi_filter_deps="vaapi"
3459 derain_filter_select="dnn"
3460 deshake_filter_select="pixelutils"
3461 deshake_opencl_filter_deps="opencl"
3462 dilation_opencl_filter_deps="opencl"
3463 drawtext_filter_deps="libfreetype"
3464 drawtext_filter_suggest="libfontconfig libfribidi"
3465 elbg_filter_deps="avcodec"
3466 eq_filter_deps="gpl"
3467 erosion_opencl_filter_deps="opencl"
3468 fftfilt_filter_deps="avcodec"
3469 fftfilt_filter_select="rdft"
3470 fftdnoiz_filter_deps="avcodec"
3471 fftdnoiz_filter_select="fft"
3472 find_rect_filter_deps="avcodec avformat gpl"
3473 firequalizer_filter_deps="avcodec"
3474 firequalizer_filter_select="rdft"
3475 flite_filter_deps="libflite"
3476 framerate_filter_select="scene_sad"
3477 freezedetect_filter_select="scene_sad"
3478 frei0r_filter_deps="frei0r libdl"
3479 frei0r_src_filter_deps="frei0r libdl"
3480 fspp_filter_deps="gpl"
3481 geq_filter_deps="gpl"
3482 histeq_filter_deps="gpl"
3483 hqdn3d_filter_deps="gpl"
3484 interlace_filter_deps="gpl"
3485 kerndeint_filter_deps="gpl"
3486 ladspa_filter_deps="ladspa libdl"
3487 lensfun_filter_deps="liblensfun version3"
3488 lv2_filter_deps="lv2"
3489 mcdeint_filter_deps="avcodec gpl"
3490 movie_filter_deps="avcodec avformat"
3491 mpdecimate_filter_deps="gpl"
3492 mpdecimate_filter_select="pixelutils"
3493 minterpolate_filter_select="scene_sad"
3494 mptestsrc_filter_deps="gpl"
3495 negate_filter_deps="lut_filter"
3496 nlmeans_opencl_filter_deps="opencl"
3497 nnedi_filter_deps="gpl"
3498 ocr_filter_deps="libtesseract"
3499 ocv_filter_deps="libopencv"
3500 openclsrc_filter_deps="opencl"
3501 overlay_opencl_filter_deps="opencl"
3502 overlay_qsv_filter_deps="libmfx"
3503 overlay_qsv_filter_select="qsvvpp"
3504 owdenoise_filter_deps="gpl"
3505 pan_filter_deps="swresample"
3506 perspective_filter_deps="gpl"
3507 phase_filter_deps="gpl"
3508 pp7_filter_deps="gpl"
3509 pp_filter_deps="gpl postproc"
3510 prewitt_opencl_filter_deps="opencl"
3511 procamp_vaapi_filter_deps="vaapi"
3512 program_opencl_filter_deps="opencl"
3513 pullup_filter_deps="gpl"
3514 removelogo_filter_deps="avcodec avformat swscale"
3515 repeatfields_filter_deps="gpl"
3516 resample_filter_deps="avresample"
3517 roberts_opencl_filter_deps="opencl"
3518 rubberband_filter_deps="librubberband"
3519 sab_filter_deps="gpl swscale"
3520 scale2ref_filter_deps="swscale"
3521 scale_filter_deps="swscale"
3522 scale_qsv_filter_deps="libmfx"
3523 select_filter_select="scene_sad"
3524 sharpness_vaapi_filter_deps="vaapi"
3525 showcqt_filter_deps="avcodec avformat swscale"
3526 showcqt_filter_suggest="libfontconfig libfreetype"
3527 showcqt_filter_select="fft"
3528 showfreqs_filter_deps="avcodec"
3529 showfreqs_filter_select="fft"
3530 showspectrum_filter_deps="avcodec"
3531 showspectrum_filter_select="fft"
3532 showspectrumpic_filter_deps="avcodec"
3533 showspectrumpic_filter_select="fft"
3534 signature_filter_deps="gpl avcodec avformat"
3535 smartblur_filter_deps="gpl swscale"
3536 sobel_opencl_filter_deps="opencl"
3537 sofalizer_filter_deps="libmysofa avcodec"
3538 sofalizer_filter_select="fft"
3539 spectrumsynth_filter_deps="avcodec"
3540 spectrumsynth_filter_select="fft"
3541 spp_filter_deps="gpl avcodec"
3542 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3543 sr_filter_deps="avformat swscale"
3544 sr_filter_select="dnn"
3545 stereo3d_filter_deps="gpl"
3546 subtitles_filter_deps="avformat avcodec libass"
3547 super2xsai_filter_deps="gpl"
3548 pixfmts_super2xsai_test_deps="super2xsai_filter"
3549 tinterlace_filter_deps="gpl"
3550 tinterlace_merge_test_deps="tinterlace_filter"
3551 tinterlace_pad_test_deps="tinterlace_filter"
3552 tonemap_filter_deps="const_nan"
3553 tonemap_opencl_filter_deps="opencl const_nan"
3554 transpose_opencl_filter_deps="opencl"
3555 transpose_vaapi_filter_deps="vaapi VAProcPipelineCaps_rotation_flags"
3556 unsharp_opencl_filter_deps="opencl"
3557 uspp_filter_deps="gpl avcodec"
3558 vaguedenoiser_filter_deps="gpl"
3559 vidstabdetect_filter_deps="libvidstab"
3560 vidstabtransform_filter_deps="libvidstab"
3561 libvmaf_filter_deps="libvmaf pthreads"
3562 zmq_filter_deps="libzmq"
3563 zoompan_filter_deps="swscale"
3564 zscale_filter_deps="libzimg const_nan"
3565 scale_vaapi_filter_deps="vaapi"
3566 vpp_qsv_filter_deps="libmfx"
3567 vpp_qsv_filter_select="qsvvpp"
3568 yadif_cuda_filter_deps="ffnvcodec"
3569 yadif_cuda_filter_deps_any="cuda_nvcc cuda_llvm"
3570
3571 # examples
3572 avio_dir_cmd_deps="avformat avutil"
3573 avio_reading_deps="avformat avcodec avutil"
3574 decode_audio_example_deps="avcodec avutil"
3575 decode_video_example_deps="avcodec avutil"
3576 demuxing_decoding_example_deps="avcodec avformat avutil"
3577 encode_audio_example_deps="avcodec avutil"
3578 encode_video_example_deps="avcodec avutil"
3579 extract_mvs_example_deps="avcodec avformat avutil"
3580 filter_audio_example_deps="avfilter avutil"
3581 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3582 filtering_video_example_deps="avfilter avcodec avformat avutil"
3583 http_multiclient_example_deps="avformat avutil fork"
3584 hw_decode_example_deps="avcodec avformat avutil"
3585 metadata_example_deps="avformat avutil"
3586 muxing_example_deps="avcodec avformat avutil swscale"
3587 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3588 remuxing_example_deps="avcodec avformat avutil"
3589 resampling_audio_example_deps="avutil swresample"
3590 scaling_video_example_deps="avutil swscale"
3591 transcode_aac_example_deps="avcodec avformat swresample"
3592 transcoding_example_deps="avfilter avcodec avformat avutil"
3593 vaapi_encode_example_deps="avcodec avutil h264_vaapi_encoder"
3594 vaapi_transcode_example_deps="avcodec avformat avutil h264_vaapi_encoder"
3595
3596 # EXTRALIBS_LIST
3597 cpu_init_extralibs="pthreads_extralibs"
3598 cws2fws_extralibs="zlib_extralibs"
3599
3600 # libraries, in any order
3601 avcodec_deps="avutil"
3602 avcodec_suggest="libm"
3603 avcodec_select="null_bsf"
3604 avdevice_deps="avformat avcodec avutil"
3605 avdevice_suggest="libm"
3606 avfilter_deps="avutil"
3607 avfilter_suggest="libm"
3608 avformat_deps="avcodec avutil"
3609 avformat_suggest="libm network zlib"
3610 avresample_deps="avutil"
3611 avresample_suggest="libm"
3612 avutil_suggest="clock_gettime ffnvcodec libm libdrm libmfx opencl user32 vaapi videotoolbox corefoundation corevideo coremedia bcrypt"
3613 postproc_deps="avutil gpl"
3614 postproc_suggest="libm"
3615 swresample_deps="avutil"
3616 swresample_suggest="libm libsoxr"
3617 swscale_deps="avutil"
3618 swscale_suggest="libm"
3619
3620 avcodec_extralibs="pthreads_extralibs iconv_extralibs dxva2_extralibs"
3621 avfilter_extralibs="pthreads_extralibs"
3622 avutil_extralibs="d3d11va_extralibs nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3623
3624 # programs
3625 ffmpeg_deps="avcodec avfilter avformat"
3626 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3627                hflip_filter null_filter
3628                transpose_filter trim_filter vflip_filter"
3629 ffmpeg_suggest="ole32 psapi shell32"
3630 ffplay_deps="avcodec avformat swscale swresample sdl2"
3631 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3632 ffplay_suggest="shell32"
3633 ffprobe_deps="avcodec avformat"
3634 ffprobe_suggest="shell32"
3635
3636 # documentation
3637 podpages_deps="perl"
3638 manpages_deps="perl pod2man"
3639 htmlpages_deps="perl"
3640 htmlpages_deps_any="makeinfo_html texi2html"
3641 txtpages_deps="perl makeinfo"
3642 doc_deps_any="manpages htmlpages podpages txtpages"
3643
3644 # default parameters
3645
3646 logfile="ffbuild/config.log"
3647
3648 # installation paths
3649 prefix_default="/usr/local"
3650 bindir_default='${prefix}/bin'
3651 datadir_default='${prefix}/share/ffmpeg'
3652 docdir_default='${prefix}/share/doc/ffmpeg'
3653 incdir_default='${prefix}/include'
3654 libdir_default='${prefix}/lib'
3655 mandir_default='${prefix}/share/man'
3656
3657 # toolchain
3658 ar_default="ar"
3659 cc_default="gcc"
3660 cxx_default="g++"
3661 host_cc_default="gcc"
3662 doxygen_default="doxygen"
3663 install="install"
3664 ln_s_default="ln -s -f"
3665 nm_default="nm -g"
3666 pkg_config_default=pkg-config
3667 ranlib_default="ranlib"
3668 strip_default="strip"
3669 version_script='--version-script'
3670 objformat="elf32"
3671 x86asmexe_default="nasm"
3672 windres_default="windres"
3673 striptype="direct"
3674
3675 # OS
3676 target_os_default=$(tolower $(uname -s))
3677 host_os=$target_os_default
3678
3679 # machine
3680 if test "$target_os_default" = aix; then
3681     arch_default=$(uname -p)
3682     strip_default="strip -X32_64"
3683     nm_default="nm -g -X32_64"
3684 else
3685     arch_default=$(uname -m)
3686 fi
3687 cpu="generic"
3688 intrinsics="none"
3689
3690 # configurable options
3691 enable $PROGRAM_LIST
3692 enable $DOCUMENT_LIST
3693 enable $EXAMPLE_LIST
3694 enable $(filter_out avresample $LIBRARY_LIST)
3695 enable stripping
3696
3697 enable asm
3698 enable debug
3699 enable doc
3700 enable faan faandct faanidct
3701 enable optimizations
3702 enable runtime_cpudetect
3703 enable safe_bitstream_reader
3704 enable static
3705 enable swscale_alpha
3706 enable valgrind_backtrace
3707
3708 sws_max_filter_size_default=256
3709 set_default sws_max_filter_size
3710
3711 # internal components are enabled by default
3712 enable $EXTRALIBS_LIST
3713
3714 # Avoid external, non-system, libraries getting enabled by dependency resolution
3715 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3716
3717 # build settings
3718 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3719 LIBPREF="lib"
3720 LIBSUF=".a"
3721 FULLNAME='$(NAME)$(BUILDSUF)'
3722 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3723 SLIBPREF="lib"
3724 SLIBSUF=".so"
3725 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3726 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3727 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3728 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3729 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3730 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3731 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3732
3733 asflags_filter=echo
3734 cflags_filter=echo
3735 ldflags_filter=echo
3736
3737 AS_C='-c'
3738 AS_O='-o $@'
3739 CC_C='-c'
3740 CC_E='-E -o $@'
3741 CC_O='-o $@'
3742 CXX_C='-c'
3743 CXX_O='-o $@'
3744 OBJCC_C='-c'
3745 OBJCC_E='-E -o $@'
3746 OBJCC_O='-o $@'
3747 X86ASM_O='-o $@'
3748 LD_O='-o $@'
3749 LD_LIB='-l%'
3750 LD_PATH='-L'
3751 HOSTCC_C='-c'
3752 HOSTCC_E='-E -o $@'
3753 HOSTCC_O='-o $@'
3754 HOSTLD_O='-o $@'
3755 NVCC_C='-c'
3756 NVCC_O='-o $@'
3757
3758 host_extralibs='-lm'
3759 host_cflags_filter=echo
3760 host_ldflags_filter=echo
3761
3762 target_path='$(CURDIR)'
3763
3764 # since the object filename is not given with the -MM flag, the compiler
3765 # is only able to print the basename, and we must add the path ourselves
3766 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3767 DEPFLAGS='-MM'
3768
3769 mkdir -p ffbuild
3770
3771 # find source path
3772 if test -f configure; then
3773     source_path=.
3774 elif test -f src/configure; then
3775     source_path=src
3776 else
3777     source_path=$(cd $(dirname "$0"); pwd)
3778     case "$source_path" in
3779         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3780     esac
3781     test -e "$source_path/config.h" &&
3782         die "Out of tree builds are impossible with config.h in source dir."
3783 fi
3784
3785 for v in "$@"; do
3786     r=${v#*=}
3787     l=${v%"$r"}
3788     r=$(sh_quote "$r")
3789     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3790 done
3791
3792 find_things_extern(){
3793     thing=$1
3794     pattern=$2
3795     file=$source_path/$3
3796     out=${4:-$thing}
3797     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$out/p" "$file"
3798 }
3799
3800 find_filters_extern(){
3801     file=$source_path/$1
3802     sed -n 's/^extern AVFilter ff_[avfsinkrc]\{2,5\}_\([[:alnum:]_]\{1,\}\);/\1_filter/p' $file
3803 }
3804
3805 FILTER_LIST=$(find_filters_extern libavfilter/allfilters.c)
3806 OUTDEV_LIST=$(find_things_extern muxer AVOutputFormat libavdevice/alldevices.c outdev)
3807 INDEV_LIST=$(find_things_extern demuxer AVInputFormat libavdevice/alldevices.c indev)
3808 MUXER_LIST=$(find_things_extern muxer AVOutputFormat libavformat/allformats.c)
3809 DEMUXER_LIST=$(find_things_extern demuxer AVInputFormat libavformat/allformats.c)
3810 ENCODER_LIST=$(find_things_extern encoder AVCodec libavcodec/allcodecs.c)
3811 DECODER_LIST=$(find_things_extern decoder AVCodec libavcodec/allcodecs.c)
3812 CODEC_LIST="
3813     $ENCODER_LIST
3814     $DECODER_LIST
3815 "
3816 PARSER_LIST=$(find_things_extern parser AVCodecParser libavcodec/parsers.c)
3817 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3818 HWACCEL_LIST=$(find_things_extern hwaccel AVHWAccel libavcodec/hwaccels.h)
3819 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3820
3821 AVCODEC_COMPONENTS_LIST="
3822     $BSF_LIST
3823     $DECODER_LIST
3824     $ENCODER_LIST
3825     $HWACCEL_LIST
3826     $PARSER_LIST
3827 "
3828
3829 AVDEVICE_COMPONENTS_LIST="
3830     $INDEV_LIST
3831     $OUTDEV_LIST
3832 "
3833
3834 AVFILTER_COMPONENTS_LIST="
3835     $FILTER_LIST
3836 "
3837
3838 AVFORMAT_COMPONENTS_LIST="
3839     $DEMUXER_LIST
3840     $MUXER_LIST
3841     $PROTOCOL_LIST
3842 "
3843
3844 ALL_COMPONENTS="
3845     $AVCODEC_COMPONENTS_LIST
3846     $AVDEVICE_COMPONENTS_LIST
3847     $AVFILTER_COMPONENTS_LIST
3848     $AVFORMAT_COMPONENTS_LIST
3849 "
3850
3851 for n in $COMPONENT_LIST; do
3852     v=$(toupper ${n%s})_LIST
3853     eval enable \$$v
3854     eval ${n}_if_any="\$$v"
3855 done
3856
3857 enable $ARCH_EXT_LIST
3858
3859 die_unknown(){
3860     echo "Unknown option \"$1\"."
3861     echo "See $0 --help for available options."
3862     exit 1
3863 }
3864
3865 print_in_columns() {
3866     tr ' ' '\n' | sort | tr '\r\n' '  ' | awk -v col_width=24 -v width="$ncols" '
3867     {
3868         num_cols = width > col_width ? int(width / col_width) : 1;
3869         num_rows = int((NF + num_cols-1) / num_cols);
3870         y = x = 1;
3871         for (y = 1; y <= num_rows; y++) {
3872             i = y;
3873             for (x = 1; x <= num_cols; x++) {
3874                 if (i <= NF) {
3875                   line = sprintf("%s%-" col_width "s", line, $i);
3876                 }
3877                 i = i + num_rows;
3878             }
3879             print line; line = "";
3880         }
3881     }' | sed 's/ *$//'
3882 }
3883
3884 show_list() {
3885     suffix=_$1
3886     shift
3887     echo $* | sed s/$suffix//g | print_in_columns
3888     exit 0
3889 }
3890
3891 rand_list(){
3892     IFS=', '
3893     set -- $*
3894     unset IFS
3895     for thing; do
3896         comp=${thing%:*}
3897         prob=${thing#$comp}
3898         prob=${prob#:}
3899         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3900         echo "prob ${prob:-0.5}"
3901         printf '%s\n' $comp
3902     done
3903 }
3904
3905 do_random(){
3906     action=$1
3907     shift
3908     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3909     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3910 }
3911
3912 for opt do
3913     optval="${opt#*=}"
3914     case "$opt" in
3915         --extra-ldflags=*)
3916             add_ldflags $optval
3917         ;;
3918         --extra-ldexeflags=*)
3919             add_ldexeflags $optval
3920         ;;
3921         --extra-ldsoflags=*)
3922             add_ldsoflags $optval
3923         ;;
3924         --extra-ldlibflags=*)
3925             warn "The --extra-ldlibflags option is only provided for compatibility and will be\n"\
3926                  "removed in the future. Use --extra-ldsoflags instead."
3927             add_ldsoflags $optval
3928         ;;
3929         --extra-libs=*)
3930             add_extralibs $optval
3931         ;;
3932         --disable-devices)
3933             disable $INDEV_LIST $OUTDEV_LIST
3934         ;;
3935         --enable-debug=*)
3936             debuglevel="$optval"
3937         ;;
3938         --disable-programs)
3939             disable $PROGRAM_LIST
3940         ;;
3941         --disable-everything)
3942             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3943         ;;
3944         --disable-all)
3945             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3946             disable $LIBRARY_LIST $PROGRAM_LIST doc
3947             enable avutil
3948         ;;
3949         --enable-random|--disable-random)
3950             action=${opt%%-random}
3951             do_random ${action#--} $COMPONENT_LIST
3952         ;;
3953         --enable-random=*|--disable-random=*)
3954             action=${opt%%-random=*}
3955             do_random ${action#--} $optval
3956         ;;
3957         --enable-sdl)
3958             enable sdl2
3959         ;;
3960         --enable-*=*|--disable-*=*)
3961             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3962             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3963             eval list=\$$(toupper $thing)_LIST
3964             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3965             list=$(filter "$name" $list)
3966             [ "$list" = "" ] && warn "Option $opt did not match anything"
3967             test $action = enable && warn_if_gets_disabled $list
3968             $action $list
3969         ;;
3970         --enable-yasm|--disable-yasm)
3971             warn "The ${opt} option is only provided for compatibility and will be\n"\
3972                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3973             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3974         ;;
3975         --yasmexe=*)
3976             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3977                  "removed in the future. Use --x86asmexe instead."
3978             x86asmexe="$optval"
3979         ;;
3980         --enable-?*|--disable-?*)
3981             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3982             if is_in $option $COMPONENT_LIST; then
3983                 test $action = disable && action=unset
3984                 eval $action \$$(toupper ${option%s})_LIST
3985             elif is_in $option $CMDLINE_SELECT; then
3986                 $action $option
3987             else
3988                 die_unknown $opt
3989             fi
3990         ;;
3991         --list-*)
3992             NAME="${opt#--list-}"
3993             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3994             NAME=${NAME%s}
3995             eval show_list $NAME \$$(toupper $NAME)_LIST
3996         ;;
3997         --help|-h) show_help
3998         ;;
3999         --quiet|-q) quiet=yes
4000         ;;
4001         --fatal-warnings) enable fatal_warnings
4002         ;;
4003         --libfuzzer=*)
4004             libfuzzer_path="$optval"
4005         ;;
4006         *)
4007             optname="${opt%%=*}"
4008             optname="${optname#--}"
4009             optname=$(echo "$optname" | sed 's/-/_/g')
4010             if is_in $optname $CMDLINE_SET; then
4011                 eval $optname='$optval'
4012             elif is_in $optname $CMDLINE_APPEND; then
4013                 append $optname "$optval"
4014             else
4015                 die_unknown $opt
4016             fi
4017         ;;
4018     esac
4019 done
4020
4021 for e in $env; do
4022     eval "export $e"
4023 done
4024
4025 if disabled autodetect; then
4026
4027     # Unless iconv is explicitely disabled by the user, we still want to probe
4028     # for the iconv from the libc.
4029     disabled iconv || enable libc_iconv
4030
4031     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
4032     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
4033 fi
4034 # Mark specifically enabled, but normally autodetected libraries as requested.
4035 for lib in $AUTODETECT_LIBS; do
4036     enabled $lib && request $lib
4037 done
4038 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
4039 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
4040 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
4041
4042 disabled logging && logfile=/dev/null
4043
4044 # command line configuration sanity checks
4045
4046 # we need to build at least one lib type
4047 if ! enabled_any static shared; then
4048     cat <<EOF
4049 At least one library type must be built.
4050 Specify --enable-static to build the static libraries or --enable-shared to
4051 build the shared libraries as well. To only build the shared libraries specify
4052 --disable-static in addition to --enable-shared.
4053 EOF
4054     exit 1
4055 fi
4056
4057 die_license_disabled() {
4058     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
4059 }
4060
4061 die_license_disabled_gpl() {
4062     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
4063 }
4064
4065 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
4066 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
4067
4068 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
4069 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
4070
4071 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4072
4073 if enabled nonfree; then
4074     license="nonfree and unredistributable"
4075 elif enabled gplv3; then
4076     license="GPL version 3 or later"
4077 elif enabled lgplv3; then
4078     license="LGPL version 3 or later"
4079 elif enabled gpl; then
4080     license="GPL version 2 or later"
4081 else
4082     license="LGPL version 2.1 or later"
4083 fi
4084
4085 enabled_all gnutls openssl &&
4086     die "GnuTLS and OpenSSL must not be enabled at the same time."
4087
4088 enabled_all gnutls mbedtls &&
4089     die "GnuTLS and mbedTLS must not be enabled at the same time."
4090
4091 enabled_all openssl mbedtls &&
4092     die "OpenSSL and mbedTLS must not be enabled at the same time."
4093
4094 # Disable all the library-specific components if the library itself
4095 # is disabled, see AVCODEC_LIST and following _LIST variables.
4096
4097 disable_components(){
4098     disabled ${1} && disable $(
4099         eval components="\$$(toupper ${1})_COMPONENTS"
4100         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
4101     )
4102 }
4103
4104 map 'disable_components $v' $LIBRARY_LIST
4105
4106 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
4107 set >> $logfile
4108
4109 test -n "$valgrind" && toolchain="valgrind-memcheck"
4110
4111 enabled ossfuzz && ! echo $CFLAGS | grep -q -- "-fsanitize="  && ! echo $CFLAGS | grep -q -- "-fcoverage-mapping" &&{
4112     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
4113     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
4114 }
4115
4116 case "$toolchain" in
4117     *-asan)
4118         cc_default="${toolchain%-asan}"
4119         add_cflags  -fsanitize=address
4120         add_ldflags -fsanitize=address
4121     ;;
4122     *-msan)
4123         cc_default="${toolchain%-msan}"
4124         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
4125         add_ldflags -fsanitize=memory
4126     ;;
4127     *-tsan)
4128         cc_default="${toolchain%-tsan}"
4129         add_cflags  -fsanitize=thread
4130         add_ldflags -fsanitize=thread
4131         case "$toolchain" in
4132             gcc-tsan)
4133                 add_cflags  -fPIC
4134                 add_ldflags -fPIC
4135                 ;;
4136         esac
4137     ;;
4138     *-usan)
4139         cc_default="${toolchain%-usan}"
4140         add_cflags  -fsanitize=undefined
4141         add_ldflags -fsanitize=undefined
4142     ;;
4143     valgrind-*)
4144         target_exec_default="valgrind"
4145         case "$toolchain" in
4146             valgrind-massif)
4147                 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"
4148                 ;;
4149             valgrind-memcheck)
4150                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
4151                 ;;
4152         esac
4153     ;;
4154     msvc)
4155         # Check whether the current MSVC version needs the C99 converter.
4156         # From MSVC 2013 (compiler major version 18) onwards, it does actually
4157         # support enough of C99 to build ffmpeg. Default to the new
4158         # behaviour if the regexp was unable to match anything, since this
4159         # successfully parses the version number of existing supported
4160         # versions that require the converter (MSVC 2010 and 2012).
4161         cl_major_ver=$(cl.exe 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
4162         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
4163             cc_default="cl.exe"
4164             cxx_default="cl.exe"
4165         else
4166             die "Unsupported MSVC version (2013 or newer required)"
4167         fi
4168         ld_default="$source_path/compat/windows/mslink"
4169         nm_default="dumpbin.exe -symbols"
4170         ar_default="lib.exe"
4171         case "$arch" in
4172         aarch64|arm64)
4173             as_default="armasm64.exe"
4174             ;;
4175         arm*)
4176             as_default="armasm.exe"
4177             ;;
4178         esac
4179         target_os_default="win32"
4180         # Use a relative path for TMPDIR. This makes sure all the
4181         # ffconf temp files are written with a relative path, avoiding
4182         # issues with msys/win32 path conversion for MSVC parameters
4183         # such as -Fo<file> or -out:<file>.
4184         TMPDIR=.
4185     ;;
4186     icl)
4187         cc_default="icl"
4188         ld_default="xilink"
4189         nm_default="dumpbin -symbols"
4190         ar_default="xilib"
4191         target_os_default="win32"
4192         TMPDIR=.
4193     ;;
4194     gcov)
4195         add_cflags  -fprofile-arcs -ftest-coverage
4196         add_ldflags -fprofile-arcs -ftest-coverage
4197     ;;
4198     llvm-cov)
4199         add_cflags -fprofile-arcs -ftest-coverage
4200         add_ldflags --coverage
4201     ;;
4202     hardened)
4203         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
4204         add_cflags   -fno-strict-overflow -fstack-protector-all
4205         add_ldflags  -Wl,-z,relro -Wl,-z,now
4206         add_cflags   -fPIE
4207         add_ldexeflags -fPIE -pie
4208     ;;
4209     ?*)
4210         die "Unknown toolchain $toolchain"
4211     ;;
4212 esac
4213
4214 if test -n "$cross_prefix"; then
4215     test -n "$arch" && test -n "$target_os" ||
4216         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
4217     enable cross_compile
4218 fi
4219
4220 set_default target_os
4221 if test "$target_os" = android; then
4222     cc_default="clang"
4223 fi
4224
4225 ar_default="${cross_prefix}${ar_default}"
4226 cc_default="${cross_prefix}${cc_default}"
4227 cxx_default="${cross_prefix}${cxx_default}"
4228 nm_default="${cross_prefix}${nm_default}"
4229 pkg_config_default="${cross_prefix}${pkg_config_default}"
4230 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
4231     ranlib_default="${cross_prefix}${ranlib_default} -D"
4232 else
4233     ranlib_default="${cross_prefix}${ranlib_default}"
4234 fi
4235 strip_default="${cross_prefix}${strip_default}"
4236 windres_default="${cross_prefix}${windres_default}"
4237
4238 sysinclude_default="${sysroot}/usr/include"
4239
4240 if enabled cuda_sdk; then
4241     warn "Option --enable-cuda-sdk is deprecated. Use --enable-cuda-nvcc instead."
4242     enable cuda_nvcc
4243 fi
4244
4245 if enabled cuda_nvcc; then
4246     nvcc_default="nvcc"
4247     nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
4248 else
4249     nvcc_default="clang"
4250     nvccflags_default="--cuda-gpu-arch=sm_30 -O2"
4251     NVCC_C=""
4252 fi
4253
4254 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
4255     target_exec x86asmexe nvcc
4256 enabled cross_compile || host_cc_default=$cc
4257 set_default host_cc
4258
4259 pkg_config_fail_message=""
4260 if ! $pkg_config --version >/dev/null 2>&1; then
4261     warn "$pkg_config not found, library detection may fail."
4262     pkg_config=false
4263 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
4264     pkg_config_fail_message="
4265 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
4266 fi
4267
4268 if test $doxygen != $doxygen_default && \
4269   ! $doxygen --version >/dev/null 2>&1; then
4270     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
4271 fi
4272
4273 exesuf() {
4274     case $1 in
4275         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
4276     esac
4277 }
4278
4279 EXESUF=$(exesuf $target_os)
4280 HOSTEXESUF=$(exesuf $host_os)
4281
4282 # set temporary file name
4283 : ${TMPDIR:=$TEMPDIR}
4284 : ${TMPDIR:=$TMP}
4285 : ${TMPDIR:=/tmp}
4286
4287 if [ -n "$tempprefix" ] ; then
4288     mktemp(){
4289         tmpname="$tempprefix.${HOSTNAME}.${UID}"
4290         echo "$tmpname"
4291         mkdir "$tmpname"
4292     }
4293 elif ! test_cmd mktemp -u XXXXXX; then
4294     # simple replacement for missing mktemp
4295     # NOT SAFE FOR GENERAL USE
4296     mktemp(){
4297         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
4298         echo "$tmpname"
4299         mkdir "$tmpname"
4300     }
4301 fi
4302
4303 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
4304     die "Unable to create temporary directory in $TMPDIR."
4305
4306 tmpfile(){
4307     tmp="${FFTMPDIR}/test"$2
4308     (set -C; exec > $tmp) 2> /dev/null ||
4309         die "Unable to create temporary file in $FFTMPDIR."
4310     eval $1=$tmp
4311 }
4312
4313 trap 'rm -rf -- "$FFTMPDIR"' EXIT
4314 trap 'exit 2' INT
4315
4316 tmpfile TMPASM .asm
4317 tmpfile TMPC   .c
4318 tmpfile TMPCPP .cpp
4319 tmpfile TMPE   $EXESUF
4320 tmpfile TMPH   .h
4321 tmpfile TMPM   .m
4322 tmpfile TMPCU  .cu
4323 tmpfile TMPO   .o
4324 tmpfile TMPS   .S
4325 tmpfile TMPSH  .sh
4326 tmpfile TMPV   .ver
4327
4328 unset -f mktemp
4329
4330 chmod +x $TMPE
4331
4332 # make sure we can execute files in $TMPDIR
4333 cat > $TMPSH 2>> $logfile <<EOF
4334 #! /bin/sh
4335 EOF
4336 chmod +x $TMPSH >> $logfile 2>&1
4337 if ! $TMPSH >> $logfile 2>&1; then
4338     cat <<EOF
4339 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
4340 variable to another directory and make sure that it is not mounted noexec.
4341 EOF
4342     die "Sanity test failed."
4343 fi
4344
4345 armasm_flags(){
4346     for flag; do
4347         case $flag in
4348             # Filter out MSVC cl.exe options from cflags that shouldn't
4349             # be passed to gas-preprocessor
4350             -M[TD]*)                                            ;;
4351             *)                  echo $flag                      ;;
4352         esac
4353    done
4354 }
4355
4356 cparser_flags(){
4357     for flag; do
4358         case $flag in
4359             -Wno-switch)             echo -Wno-switch-enum ;;
4360             -Wno-format-zero-length) ;;
4361             -Wdisabled-optimization) ;;
4362             -Wno-pointer-sign)       echo -Wno-other ;;
4363             *)                       echo $flag ;;
4364         esac
4365     done
4366 }
4367
4368 msvc_common_flags(){
4369     for flag; do
4370         case $flag in
4371             # In addition to specifying certain flags under the compiler
4372             # specific filters, they must be specified here as well or else the
4373             # generic catch all at the bottom will print the original flag.
4374             -Wall)                ;;
4375             -Wextra)              ;;
4376             -std=c99)             ;;
4377             # Common flags
4378             -fomit-frame-pointer) ;;
4379             -g)                   echo -Z7 ;;
4380             -fno-math-errno)      ;;
4381             -fno-common)          ;;
4382             -fno-signed-zeros)    ;;
4383             -fPIC)                ;;
4384             -mthumb)              ;;
4385             -march=*)             ;;
4386             -lz)                  echo zlib.lib ;;
4387             -lx264)               echo libx264.lib ;;
4388             -lstdc++)             ;;
4389             -l*)                  echo ${flag#-l}.lib ;;
4390             -LARGEADDRESSAWARE)   echo $flag ;;
4391             -L*)                  echo -libpath:${flag#-L} ;;
4392             *)                    echo $flag ;;
4393         esac
4394     done
4395 }
4396
4397 msvc_flags(){
4398     msvc_common_flags "$@"
4399     for flag; do
4400         case $flag in
4401             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4402                                        -wd4554 ;;
4403             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4404                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4405                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4406                                        -wd4307 \
4407                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4408         esac
4409     done
4410 }
4411
4412 icl_flags(){
4413     msvc_common_flags "$@"
4414     for flag; do
4415         case $flag in
4416             # Despite what Intel's documentation says -Wall, which is supported
4417             # on Windows, does enable remarks so disable them here.
4418             -Wall)                echo $flag -Qdiag-disable:remark ;;
4419             -std=c99)             echo -Qstd=c99 ;;
4420             -flto)                echo -ipo ;;
4421         esac
4422     done
4423 }
4424
4425 icc_flags(){
4426     for flag; do
4427         case $flag in
4428             -flto)                echo -ipo ;;
4429             *)                    echo $flag ;;
4430         esac
4431     done
4432 }
4433
4434 suncc_flags(){
4435     for flag; do
4436         case $flag in
4437             -march=*|-mcpu=*)
4438                 case "${flag#*=}" in
4439                     native)                   echo -xtarget=native       ;;
4440                     v9|niagara)               echo -xarch=sparc          ;;
4441                     ultrasparc)               echo -xarch=sparcvis       ;;
4442                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4443                     i586|pentium)             echo -xchip=pentium        ;;
4444                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4445                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4446                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4447                     pentium4*)          echo -xtarget=pentium4           ;;
4448                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4449                     *-sse3)             echo -xarch=sse3                 ;;
4450                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4451                     bonnell)                   echo -xarch=ssse3         ;;
4452                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4453                     westmere)                  echo -xtarget=westmere    ;;
4454                     silvermont)                echo -xarch=sse4_2        ;;
4455                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4456                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4457                                                echo -xarch=avx           ;;
4458                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4459                     btver1)                    echo -xarch=amdsse4a      ;;
4460                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4461                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4462                     k8|opteron|athlon64|athlon-fx)
4463                                                echo -xarch=sse2a         ;;
4464                     athlon*)                   echo -xarch=pentium_proa  ;;
4465                 esac
4466                 ;;
4467             -std=c99)             echo -xc99              ;;
4468             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4469             -fPIC)                echo -KPIC -xcode=pic32 ;;
4470             -W*,*)                echo $flag              ;;
4471             -f*-*|-W*|-mimpure-text)                      ;;
4472             -shared)              echo -G                 ;;
4473             *)                    echo $flag              ;;
4474         esac
4475     done
4476 }
4477
4478 probe_cc(){
4479     pfx=$1
4480     _cc=$2
4481     first=$3
4482
4483     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4484     unset _ld_o _ldflags _ld_lib _ld_path
4485     unset _depflags _DEPCMD _DEPFLAGS
4486     _flags_filter=echo
4487
4488     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4489         true # no-op to avoid reading stdin in following checks
4490     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4491         _type=llvm_gcc
4492         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4493         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4494         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4495         _cflags_speed='-O3'
4496         _cflags_size='-Os'
4497     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4498         _type=gcc
4499         gcc_version=$($_cc --version | head -n1)
4500         gcc_basever=$($_cc -dumpversion)
4501         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4502         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4503         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4504         case $gcc_basever in
4505             2) ;;
4506             2.*) ;;
4507             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4508         esac
4509         if [ "$first" = true ]; then
4510             case $gcc_basever in
4511                 4.2*)
4512                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4513             esac
4514         fi
4515         _cflags_speed='-O3'
4516         _cflags_size='-Os'
4517     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4518         _type=icc
4519         _ident=$($_cc --version | head -n1)
4520         _depflags='-MMD'
4521         _cflags_speed='-O3'
4522         _cflags_size='-Os'
4523         _cflags_noopt='-O1'
4524         _flags_filter=icc_flags
4525     elif $_cc -v 2>&1 | grep -q xlc; then
4526         _type=xlc
4527         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4528         _cflags_speed='-O5'
4529         _cflags_size='-O5 -qcompact'
4530     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4531         test -d "$sysroot" || die "No valid sysroot specified."
4532         _type=armcc
4533         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4534         armcc_conf="$PWD/armcc.conf"
4535         $_cc --arm_linux_configure                 \
4536              --arm_linux_config_file="$armcc_conf" \
4537              --configure_sysroot="$sysroot"        \
4538              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4539              die "Error creating armcc configuration file."
4540         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4541         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4542         as_default="${cross_prefix}gcc"
4543         _depflags='-MMD'
4544         _cflags_speed='-O3'
4545         _cflags_size='-Os'
4546     elif $_cc -v 2>&1 | grep -q clang && ! $_cc -? > /dev/null 2>&1; then
4547         _type=clang
4548         _ident=$($_cc --version 2>/dev/null | head -n1)
4549         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4550         _cflags_speed='-O3'
4551         _cflags_size='-Oz'
4552     elif $_cc -V 2>&1 | grep -q Sun; then
4553         _type=suncc
4554         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4555         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4556         _DEPFLAGS='-xM1 -xc99'
4557         _ldflags='-std=c99'
4558         _cflags_speed='-O5'
4559         _cflags_size='-O5 -xspace'
4560         _flags_filter=suncc_flags
4561     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4562         _type=pathscale
4563         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4564         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4565         _cflags_speed='-O2'
4566         _cflags_size='-Os'
4567         _flags_filter='filter_out -Wdisabled-optimization'
4568     elif $_cc -v 2>&1 | grep -q Open64; then
4569         _type=open64
4570         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4571         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4572         _cflags_speed='-O2'
4573         _cflags_size='-Os'
4574         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4575     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4576         _type=armasm
4577         _ident=$($_cc | head -n1)
4578         # 4509: "This form of conditional instruction is deprecated"
4579         _flags="-nologo -ignore 4509"
4580         _flags_filter=armasm_flags
4581     elif $_cc 2>&1 | grep -q Intel; then
4582         _type=icl
4583         _ident=$($_cc 2>&1 | head -n1)
4584         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4585         # Not only is O3 broken on 13.x+ but it is slower on all previous
4586         # versions (tested) as well.
4587         _cflags_speed="-O2"
4588         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4589         if $_cc 2>&1 | grep -q Linker; then
4590             _ld_o='-out:$@'
4591         else
4592             _ld_o='-Fe$@'
4593         fi
4594         _cc_o='-Fo$@'
4595         _cc_e='-P'
4596         _flags_filter=icl_flags
4597         _ld_lib='lib%.a'
4598         _ld_path='-libpath:'
4599         # -Qdiag-error to make icl error when seeing certain unknown arguments
4600         _flags='-nologo -Qdiag-error:4044,10157'
4601         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4602         # with MSVC which enables it by default.
4603         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4604         disable stripping
4605     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4606         # lld can emulate multiple different linkers; in ms link.exe mode,
4607         # the -? parameter gives the help output which contains an identifyable
4608         # string, while it gives an error in other modes.
4609         _type=lld-link
4610         # The link.exe mode doesn't have a switch for getting the version,
4611         # but we can force it back to gnu mode and get the version from there.
4612         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4613         _ld_o='-out:$@'
4614         _flags_filter=msvc_flags
4615         _ld_lib='lib%.a'
4616         _ld_path='-libpath:'
4617     elif $_cc -nologo- 2>&1 | grep -q Microsoft || { $_cc -v 2>&1 | grep -q clang && $_cc -? > /dev/null 2>&1; }; then
4618         _type=msvc
4619         _ident=$($_cc 2>&1 | head -n1 | tr -d '\r')
4620         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4621         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4622         _cflags_speed="-O2"
4623         _cflags_size="-O1"
4624         _cflags_noopt="-O1"
4625         if $_cc -nologo- 2>&1 | grep -q Linker; then
4626             _ld_o='-out:$@'
4627         else
4628             _ld_o='-Fe$@'
4629         fi
4630         _cc_o='-Fo$@'
4631         _cc_e='-P -Fi$@'
4632         _flags_filter=msvc_flags
4633         _ld_lib='lib%.a'
4634         _ld_path='-libpath:'
4635         _flags='-nologo'
4636         disable stripping
4637     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4638         _type=cparser
4639         _ident=$($_cc --version | head -n1)
4640         _depflags='-MMD'
4641         _cflags_speed='-O4'
4642         _cflags_size='-O2'
4643         _flags_filter=cparser_flags
4644     fi
4645
4646     eval ${pfx}_type=\$_type
4647     eval ${pfx}_ident=\$_ident
4648 }
4649
4650 set_ccvars(){
4651     eval ${1}_C=\${_cc_c-\${${1}_C}}
4652     eval ${1}_E=\${_cc_e-\${${1}_E}}
4653     eval ${1}_O=\${_cc_o-\${${1}_O}}
4654
4655     if [ -n "$_depflags" ]; then
4656         eval ${1}_DEPFLAGS=\$_depflags
4657     else
4658         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4659         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4660         eval DEP${1}FLAGS=\$_flags
4661     fi
4662 }
4663
4664 probe_cc cc "$cc" "true"
4665 cflags_filter=$_flags_filter
4666 cflags_speed=$_cflags_speed
4667 cflags_size=$_cflags_size
4668 cflags_noopt=$_cflags_noopt
4669 add_cflags $_flags $_cflags
4670 cc_ldflags=$_ldflags
4671 set_ccvars CC
4672 set_ccvars CXX
4673
4674 probe_cc hostcc "$host_cc"
4675 host_cflags_filter=$_flags_filter
4676 host_cflags_speed=$_cflags_speed
4677 add_host_cflags  $_flags $_cflags
4678 set_ccvars HOSTCC
4679
4680 test -n "$cc_type" && enable $cc_type ||
4681     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4682
4683 : ${as_default:=$cc}
4684 : ${objcc_default:=$cc}
4685 : ${dep_cc_default:=$cc}
4686 : ${ld_default:=$cc}
4687 : ${host_ld_default:=$host_cc}
4688 set_default ar as objcc dep_cc ld ln_s host_ld windres
4689
4690 probe_cc as "$as"
4691 asflags_filter=$_flags_filter
4692 add_asflags $_flags $_cflags
4693 set_ccvars AS
4694
4695 probe_cc objcc "$objcc"
4696 objcflags_filter=$_flags_filter
4697 add_objcflags $_flags $_cflags
4698 set_ccvars OBJC
4699
4700 probe_cc ld "$ld"
4701 ldflags_filter=$_flags_filter
4702 add_ldflags $_flags $_ldflags
4703 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4704 LD_O=${_ld_o-$LD_O}
4705 LD_LIB=${_ld_lib-$LD_LIB}
4706 LD_PATH=${_ld_path-$LD_PATH}
4707
4708 probe_cc hostld "$host_ld"
4709 host_ldflags_filter=$_flags_filter
4710 add_host_ldflags $_flags $_ldflags
4711 HOSTLD_O=${_ld_o-$HOSTLD_O}
4712
4713 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4714     probe_cc depcc "$dep_cc"
4715     CCDEP=${_DEPCMD:-$DEPCMD}
4716     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4717     DEPCCFLAGS=$_flags
4718 fi
4719
4720 if $ar 2>&1 | grep -q Microsoft; then
4721     arflags="-nologo"
4722     ar_o='-out:$@'
4723 elif $ar 2>&1 | grep -q "\[D\] "; then
4724     arflags="rcD"
4725     ar_o='$@'
4726 else
4727     arflags="rc"
4728     ar_o='$@'
4729 fi
4730
4731 add_cflags $extra_cflags
4732 add_cxxflags $extra_cxxflags
4733 add_objcflags $extra_objcflags
4734 add_asflags $extra_cflags
4735
4736 if test -n "$sysroot"; then
4737     case "$cc_type" in
4738         gcc|llvm_gcc|clang)
4739             add_cppflags --sysroot="$sysroot"
4740             add_ldflags --sysroot="$sysroot"
4741         ;;
4742     esac
4743 fi
4744
4745 if test "$cpu" = host; then
4746     enabled cross_compile &&
4747         die "--cpu=host makes no sense when cross-compiling."
4748
4749     case "$cc_type" in
4750         gcc|llvm_gcc)
4751             check_native(){
4752                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4753                 sed -n "/cc1.*$1=/{
4754                             s/.*$1=\\([^ ]*\\).*/\\1/
4755                             p
4756                             q
4757                         }" $TMPE
4758             }
4759             cpu=$(check_native -march || check_native -mcpu)
4760         ;;
4761         clang)
4762             check_native(){
4763                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4764                 sed -n "/cc1.*-target-cpu /{
4765                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4766                             p
4767                             q
4768                         }" $TMPE
4769             }
4770             cpu=$(check_native -march)
4771         ;;
4772     esac
4773
4774     test "${cpu:-host}" = host &&
4775         die "--cpu=host not supported with compiler $cc"
4776 fi
4777
4778 # Deal with common $arch aliases
4779 case "$arch" in
4780     aarch64|arm64)
4781         arch="aarch64"
4782     ;;
4783     arm*|iPad*|iPhone*)
4784         arch="arm"
4785     ;;
4786     mips*|IP*)
4787         case "$arch" in
4788         *el)
4789             add_cppflags -EL
4790             add_ldflags -EL
4791         ;;
4792         *eb)
4793             add_cppflags -EB
4794             add_ldflags -EB
4795         ;;
4796         esac
4797         arch="mips"
4798     ;;
4799     parisc*|hppa*)
4800         arch="parisc"
4801     ;;
4802     "Power Macintosh"|ppc*|powerpc*)
4803         arch="ppc"
4804     ;;
4805     s390|s390x)
4806         arch="s390"
4807     ;;
4808     sh4|sh)
4809         arch="sh4"
4810     ;;
4811     sun4*|sparc*)
4812         arch="sparc"
4813     ;;
4814     tilegx|tile-gx)
4815         arch="tilegx"
4816     ;;
4817     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4818         arch="x86"
4819     ;;
4820 esac
4821
4822 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4823 enable $arch
4824
4825 # Add processor-specific flags
4826 if enabled aarch64; then
4827
4828     case $cpu in
4829         armv*)
4830             cpuflags="-march=$cpu"
4831         ;;
4832         *)
4833             cpuflags="-mcpu=$cpu"
4834         ;;
4835     esac
4836
4837 elif enabled alpha; then
4838
4839     cpuflags="-mcpu=$cpu"
4840
4841 elif enabled arm; then
4842
4843     check_arm_arch() {
4844         test_cpp_condition stddef.h \
4845             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4846             $cpuflags
4847     }
4848
4849     probe_arm_arch() {
4850         if   check_arm_arch 4;        then echo armv4
4851         elif check_arm_arch 4T;       then echo armv4t
4852         elif check_arm_arch 5;        then echo armv5
4853         elif check_arm_arch 5E;       then echo armv5e
4854         elif check_arm_arch 5T;       then echo armv5t
4855         elif check_arm_arch 5TE;      then echo armv5te
4856         elif check_arm_arch 5TEJ;     then echo armv5te
4857         elif check_arm_arch 6;        then echo armv6
4858         elif check_arm_arch 6J;       then echo armv6j
4859         elif check_arm_arch 6K;       then echo armv6k
4860         elif check_arm_arch 6Z;       then echo armv6z
4861         elif check_arm_arch 6KZ;      then echo armv6zk
4862         elif check_arm_arch 6ZK;      then echo armv6zk
4863         elif check_arm_arch 6T2;      then echo armv6t2
4864         elif check_arm_arch 7;        then echo armv7
4865         elif check_arm_arch 7A  7_A;  then echo armv7-a
4866         elif check_arm_arch 7S;       then echo armv7-a
4867         elif check_arm_arch 7R  7_R;  then echo armv7-r
4868         elif check_arm_arch 7M  7_M;  then echo armv7-m
4869         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4870         elif check_arm_arch 8A  8_A;  then echo armv8-a
4871         fi
4872     }
4873
4874     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4875
4876     case $cpu in
4877         armv*)
4878             cpuflags="-march=$cpu"
4879             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4880         ;;
4881         *)
4882             cpuflags="-mcpu=$cpu"
4883             case $cpu in
4884                 cortex-a*)                               subarch=armv7a  ;;
4885                 cortex-r*)                               subarch=armv7r  ;;
4886                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4887                 arm11*)                                  subarch=armv6   ;;
4888                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4889                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4890                 *)                             subarch=$(probe_arm_arch) ;;
4891             esac
4892         ;;
4893     esac
4894
4895     case "$subarch" in
4896         armv5t*)    enable fast_clz                ;;
4897         armv[6-8]*)
4898             enable fast_clz
4899             disabled fast_unaligned || enable fast_unaligned
4900             ;;
4901     esac
4902
4903 elif enabled avr32; then
4904
4905     case $cpu in
4906         ap7[02]0[0-2])
4907             subarch="avr32_ap"
4908             cpuflags="-mpart=$cpu"
4909         ;;
4910         ap)
4911             subarch="avr32_ap"
4912             cpuflags="-march=$cpu"
4913         ;;
4914         uc3[ab]*)
4915             subarch="avr32_uc"
4916             cpuflags="-mcpu=$cpu"
4917         ;;
4918         uc)
4919             subarch="avr32_uc"
4920             cpuflags="-march=$cpu"
4921         ;;
4922     esac
4923
4924 elif enabled bfin; then
4925
4926     cpuflags="-mcpu=$cpu"
4927
4928 elif enabled mips; then
4929
4930     cpuflags="-march=$cpu"
4931
4932     if [ "$cpu" != "generic" ]; then
4933         disable mips32r2
4934         disable mips32r5
4935         disable mips64r2
4936         disable mips32r6
4937         disable mips64r6
4938         disable loongson2
4939         disable loongson3
4940
4941         case $cpu in
4942             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4943                 enable mips32r2
4944                 disable msa
4945             ;;
4946             p5600|i6400|p6600)
4947                 disable mipsdsp
4948                 disable mipsdspr2
4949             ;;
4950             loongson*)
4951                 enable loongson2
4952                 enable loongson3
4953                 enable local_aligned
4954                 enable simd_align_16
4955                 enable fast_64bit
4956                 enable fast_clz
4957                 enable fast_cmov
4958                 enable fast_unaligned
4959                 disable aligned_stack
4960                 disable mipsdsp
4961                 disable mipsdspr2
4962                 # When gcc version less than 5.3.0, add -fno-expensive-optimizations flag.
4963                 if [ $cc == gcc ]; then
4964                     gcc_version=$(gcc -dumpversion)
4965                     if [ "$(echo "$gcc_version 5.3.0" | tr " " "\n" | sort -rV | head -n 1)" == "$gcc_version" ]; then
4966                         expensive_optimization_flag=""
4967                     else
4968                         expensive_optimization_flag="-fno-expensive-optimizations"
4969                     fi
4970                 fi
4971                 case $cpu in
4972                     loongson3*)
4973                         cpuflags="-march=loongson3a -mhard-float $expensive_optimization_flag"
4974                     ;;
4975                     loongson2e)
4976                         cpuflags="-march=loongson2e -mhard-float $expensive_optimization_flag"
4977                     ;;
4978                     loongson2f)
4979                         cpuflags="-march=loongson2f -mhard-float $expensive_optimization_flag"
4980                     ;;
4981                 esac
4982             ;;
4983             *)
4984                 # Unknown CPU. Disable everything.
4985                 warn "unknown CPU. Disabling all MIPS optimizations."
4986                 disable mipsfpu
4987                 disable mipsdsp
4988                 disable mipsdspr2
4989                 disable msa
4990                 disable mmi
4991             ;;
4992         esac
4993
4994         case $cpu in
4995             24kc)
4996                 disable mipsfpu
4997                 disable mipsdsp
4998                 disable mipsdspr2
4999             ;;
5000             24kf*)
5001                 disable mipsdsp
5002                 disable mipsdspr2
5003             ;;
5004             24kec|34kc|1004kc)
5005                 disable mipsfpu
5006                 disable mipsdspr2
5007             ;;
5008             24kef*|34kf*|1004kf*)
5009                 disable mipsdspr2
5010             ;;
5011             74kc)
5012                 disable mipsfpu
5013             ;;
5014             p5600)
5015                 enable mips32r5
5016                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
5017             ;;
5018             i6400)
5019                 enable mips64r6
5020                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
5021             ;;
5022             p6600)
5023                 enable mips64r6
5024                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
5025             ;;
5026         esac
5027     else
5028         # We do not disable anything. Is up to the user to disable the unwanted features.
5029         warn 'generic cpu selected'
5030     fi
5031
5032 elif enabled ppc; then
5033
5034     disable ldbrx
5035
5036     case $(tolower $cpu) in
5037         601|ppc601|powerpc601)
5038             cpuflags="-mcpu=601"
5039             disable altivec
5040         ;;
5041         603*|ppc603*|powerpc603*)
5042             cpuflags="-mcpu=603"
5043             disable altivec
5044         ;;
5045         604*|ppc604*|powerpc604*)
5046             cpuflags="-mcpu=604"
5047             disable altivec
5048         ;;
5049         g3|75*|ppc75*|powerpc75*)
5050             cpuflags="-mcpu=750"
5051             disable altivec
5052         ;;
5053         g4|745*|ppc745*|powerpc745*)
5054             cpuflags="-mcpu=7450"
5055             disable vsx
5056         ;;
5057         74*|ppc74*|powerpc74*)
5058             cpuflags="-mcpu=7400"
5059             disable vsx
5060         ;;
5061         g5|970|ppc970|powerpc970)
5062             cpuflags="-mcpu=970"
5063             disable vsx
5064         ;;
5065         power[3-6]*)
5066             cpuflags="-mcpu=$cpu"
5067             disable vsx
5068         ;;
5069         power[7-8]*)
5070             cpuflags="-mcpu=$cpu"
5071         ;;
5072         cell)
5073             cpuflags="-mcpu=cell"
5074             enable ldbrx
5075             disable vsx
5076         ;;
5077         e500mc)
5078             cpuflags="-mcpu=e500mc"
5079             disable altivec
5080         ;;
5081         e500v2)
5082             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
5083             disable altivec
5084             disable dcbzl
5085         ;;
5086         e500)
5087             cpuflags="-mcpu=8540 -mhard-float"
5088             disable altivec
5089             disable dcbzl
5090         ;;
5091     esac
5092
5093 elif enabled sparc; then
5094
5095     case $cpu in
5096         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
5097             cpuflags="-mcpu=$cpu"
5098         ;;
5099         ultrasparc*|niagara[234])
5100             cpuflags="-mcpu=$cpu"
5101         ;;
5102     esac
5103
5104 elif enabled x86; then
5105
5106     case $cpu in
5107         i[345]86|pentium)
5108             cpuflags="-march=$cpu"
5109             disable i686
5110             disable mmx
5111         ;;
5112         # targets that do NOT support nopl and conditional mov (cmov)
5113         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
5114             cpuflags="-march=$cpu"
5115             disable i686
5116         ;;
5117         # targets that do support nopl and conditional mov (cmov)
5118         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
5119         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
5120         |amdfam10|barcelona|b[dt]ver*|znver*)
5121             cpuflags="-march=$cpu"
5122             enable i686
5123             enable fast_cmov
5124         ;;
5125         # targets that do support conditional mov but on which it's slow
5126         pentium4|pentium4m|prescott|nocona)
5127             cpuflags="-march=$cpu"
5128             enable i686
5129             disable fast_cmov
5130         ;;
5131     esac
5132
5133 fi
5134
5135 if [ "$cpu" != generic ]; then
5136     add_cflags  $cpuflags
5137     add_asflags $cpuflags
5138     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
5139 fi
5140
5141 # compiler sanity check
5142 test_exec <<EOF
5143 int main(void){ return 0; }
5144 EOF
5145 if test "$?" != 0; then
5146     echo "$cc is unable to create an executable file."
5147     if test -z "$cross_prefix" && ! enabled cross_compile ; then
5148         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
5149         echo "Only do this if you know what cross compiling means."
5150     fi
5151     die "C compiler test failed."
5152 fi
5153
5154 add_cppflags -D_ISOC99_SOURCE
5155 add_cxxflags -D__STDC_CONSTANT_MACROS
5156 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
5157
5158 # some compilers silently accept -std=c11, so we also need to check that the
5159 # version macro is defined properly
5160 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
5161     add_cflags -std=c11 ||
5162     check_cflags -std=c99
5163
5164 check_cppflags -D_FILE_OFFSET_BITS=64
5165 check_cppflags -D_LARGEFILE_SOURCE
5166
5167 add_host_cppflags -D_ISOC99_SOURCE
5168 check_host_cflags -std=c99
5169 check_host_cflags -Wall
5170 check_host_cflags $host_cflags_speed
5171
5172 check_64bit(){
5173     arch32=$1
5174     arch64=$2
5175     expr=${3:-'sizeof(void *) > 4'}
5176     test_code cc "" "int test[2*($expr) - 1]" &&
5177         subarch=$arch64 || subarch=$arch32
5178     enable $subarch
5179 }
5180
5181 case "$arch" in
5182     aarch64|alpha|ia64)
5183         enabled shared && enable_weak pic
5184     ;;
5185     mips)
5186         check_64bit mips mips64 '_MIPS_SIM > 1'
5187         enabled shared && enable_weak pic
5188     ;;
5189     parisc)
5190         check_64bit parisc parisc64
5191         enabled shared && enable_weak pic
5192     ;;
5193     ppc)
5194         check_64bit ppc ppc64
5195         enabled shared && enable_weak pic
5196     ;;
5197     s390)
5198         check_64bit s390 s390x
5199         enabled shared && enable_weak pic
5200     ;;
5201     sparc)
5202         check_64bit sparc sparc64
5203         enabled shared && enable_weak pic
5204     ;;
5205     x86)
5206         check_64bit x86_32 x86_64
5207         # Treat x32 as x64 for now. Note it also needs pic if shared
5208         test "$subarch" = "x86_32" && test_cpp_condition stddef.h 'defined(__x86_64__)' &&
5209             subarch=x86_64 && enable x86_64 && disable x86_32
5210         if enabled x86_64; then
5211             enabled shared && enable_weak pic
5212             objformat=elf64
5213         fi
5214     ;;
5215 esac
5216
5217 # OS specific
5218 case $target_os in
5219     aix)
5220         SHFLAGS=-shared
5221         add_cppflags '-I\$(SRC_PATH)/compat/aix'
5222         enabled shared && add_ldflags -Wl,-brtl
5223         arflags='-Xany -r -c'
5224         striptype=""
5225         ;;
5226     android)
5227         disable symver
5228         enable section_data_rel_ro
5229         add_cflags -fPIE
5230         add_ldexeflags -fPIE -pie
5231         SLIB_INSTALL_NAME='$(SLIBNAME)'
5232         SLIB_INSTALL_LINKS=
5233         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
5234         ;;
5235     haiku)
5236         prefix_default="/boot/common"
5237         network_extralibs="-lnetwork"
5238         host_extralibs=
5239         ;;
5240     sunos)
5241         SHFLAGS='-shared -Wl,-h,$$(@F)'
5242         enabled x86 && append SHFLAGS -mimpure-text
5243         network_extralibs="-lsocket -lnsl"
5244         add_cppflags -D__EXTENSIONS__
5245         # When using suncc to build, the Solaris linker will mark
5246         # an executable with each instruction set encountered by
5247         # the Solaris assembler.  As our libraries contain their own
5248         # guards for processor-specific code, instead suppress
5249         # generation of the HWCAPS ELF section on Solaris x86 only.
5250         enabled_all suncc x86 &&
5251             echo "hwcap_1 = OVERRIDE;" > mapfile &&
5252             add_ldflags -Wl,-M,mapfile
5253         nm_default='nm -P -g'
5254         striptype=""
5255         version_script='-M'
5256         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
5257         ;;
5258     netbsd)
5259         disable symver
5260         oss_indev_extralibs="-lossaudio"
5261         oss_outdev_extralibs="-lossaudio"
5262         enabled gcc || check_ldflags -Wl,-zmuldefs
5263         ;;
5264     openbsd|bitrig)
5265         disable symver
5266         striptype=""
5267         SHFLAGS='-shared'
5268         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
5269         SLIB_INSTALL_LINKS=
5270         oss_indev_extralibs="-lossaudio"
5271         oss_outdev_extralibs="-lossaudio"
5272         ;;
5273     dragonfly)
5274         disable symver
5275         ;;
5276     freebsd)
5277         ;;
5278     bsd/os)
5279         add_extralibs -lpoll -lgnugetopt
5280         strip="strip -d"
5281         ;;
5282     darwin)
5283         enabled ppc && add_asflags -force_cpusubtype_ALL
5284         install_name_dir_default='$(SHLIBDIR)'
5285         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
5286         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
5287         strip="${strip} -x"
5288         add_ldflags -Wl,-dynamic,-search_paths_first
5289         check_cflags -Werror=partial-availability
5290         SLIBSUF=".dylib"
5291         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
5292         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
5293         enabled x86_64 && objformat="macho64" || objformat="macho32"
5294         enabled_any pic shared x86_64 ||
5295             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
5296         check_headers dispatch/dispatch.h &&
5297             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
5298         if test -n "$sysroot"; then
5299             is_in -isysroot $cc $CPPFLAGS $CFLAGS || check_cppflags -isysroot $sysroot
5300             is_in -isysroot $ld $LDFLAGS          || check_ldflags  -isysroot $sysroot
5301         fi
5302         version_script='-exported_symbols_list'
5303         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
5304         ;;
5305     msys*)
5306         die "Native MSYS builds are discouraged, please use the MINGW environment."
5307         ;;
5308     mingw32*|mingw64*)
5309         target_os=mingw32
5310         LIBTARGET=i386
5311         if enabled x86_64; then
5312             LIBTARGET="i386:x86-64"
5313         elif enabled arm; then
5314             LIBTARGET="arm"
5315         elif enabled aarch64; then
5316             LIBTARGET="arm64"
5317         fi
5318         if enabled shared; then
5319             # Cannot build both shared and static libs when using dllimport.
5320             disable static
5321         fi
5322         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5323         enabled x86_32 && check_ldflags -Wl,--large-address-aware
5324         shlibdir_default="$bindir_default"
5325         SLIBPREF=""
5326         SLIBSUF=".dll"
5327         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5328         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5329         if test_cmd lib.exe -list; then
5330             SLIB_EXTRA_CMD=-'lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5331             if enabled x86_64; then
5332                 LIBTARGET=x64
5333             fi
5334         else
5335             SLIB_EXTRA_CMD=-'$(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
5336         fi
5337         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5338         SLIB_INSTALL_LINKS=
5339         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5340         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5341         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" AR="$(AR_CMD)" NM="$(NM_CMD)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5342         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--disable-auto-image-base $$(@:$(SLIBSUF)=.def)'
5343         enabled x86_64 && objformat="win64" || objformat="win32"
5344         dlltool="${cross_prefix}dlltool"
5345         ranlib=:
5346         enable dos_paths
5347         check_ldflags -Wl,--nxcompat,--dynamicbase
5348         # Lets work around some stupidity in binutils.
5349         # ld will strip relocations from executables even though we need them
5350         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
5351         # however ld then forgets what the entry point should be (oops) so we
5352         # have to manually (re)set it.
5353         if enabled x86_32; then
5354             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
5355         elif enabled x86_64; then
5356             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
5357             check_ldflags -Wl,--high-entropy-va # binutils 2.25
5358             # Set image base >4GB for extra entropy with HEASLR
5359             add_ldexeflags -Wl,--image-base,0x140000000
5360             append SHFLAGS -Wl,--image-base,0x180000000
5361         fi
5362         ;;
5363     win32|win64)
5364         disable symver
5365         if enabled shared; then
5366             # Link to the import library instead of the normal static library
5367             # for shared libs.
5368             LD_LIB='%.lib'
5369             # Cannot build both shared and static libs with MSVC or icl.
5370             disable static
5371         fi
5372         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
5373         shlibdir_default="$bindir_default"
5374         SLIBPREF=""
5375         SLIBSUF=".dll"
5376         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5377         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5378         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5379         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5380         SLIB_INSTALL_LINKS=
5381         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5382         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5383         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5384         enabled x86_64 && objformat="win64" || objformat="win32"
5385         ranlib=:
5386         enable dos_paths
5387         ;;
5388     cygwin*)
5389         target_os=cygwin
5390         shlibdir_default="$bindir_default"
5391         SLIBPREF="cyg"
5392         SLIBSUF=".dll"
5393         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5394         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5395         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5396         SLIB_INSTALL_LINKS=
5397         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
5398         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
5399         enabled x86_64 && objformat="win64" || objformat="win32"
5400         enable dos_paths
5401         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5402         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5403         ;;
5404     *-dos|freedos|opendos)
5405         network_extralibs="-lsocket"
5406         objformat="coff"
5407         enable dos_paths
5408         ;;
5409     linux)
5410         enable section_data_rel_ro
5411         enabled_any arm aarch64 && enable_weak linux_perf
5412         ;;
5413     irix*)
5414         target_os=irix
5415         ranlib="echo ignoring ranlib"
5416         ;;
5417     os/2*)
5418         strip="lxlite -CS"
5419         striptype=""
5420         objformat="aout"
5421         add_cppflags -D_GNU_SOURCE
5422         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
5423         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
5424         LIBSUF="_s.a"
5425         SLIBPREF=""
5426         SLIBSUF=".dll"
5427         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5428         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
5429         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
5430             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
5431             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
5432             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
5433             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
5434         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
5435             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
5436         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5437         SLIB_INSTALL_LINKS=
5438         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
5439         enable dos_paths
5440         enable_weak os2threads
5441         ;;
5442     gnu/kfreebsd)
5443         add_cppflags -D_BSD_SOURCE
5444         ;;
5445     gnu)
5446         ;;
5447     qnx)
5448         add_cppflags -D_QNX_SOURCE
5449         network_extralibs="-lsocket"
5450         ;;
5451     symbian)
5452         SLIBSUF=".dll"
5453         enable dos_paths
5454         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
5455         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
5456         add_ldflags -Wl,--target1-abs,--no-undefined \
5457                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
5458                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
5459         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
5460                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
5461                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
5462         ;;
5463     minix)
5464         ;;
5465     none)
5466         ;;
5467     *)
5468         die "Unknown OS '$target_os'."
5469         ;;
5470 esac
5471
5472 # test if creating links works
5473 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5474 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5475 mkdir "$link_dest"
5476 $ln_s "$link_dest" "$link_name"
5477 touch "$link_dest/test_file"
5478 if [ "$source_path" != "." ] && [ "$source_path" != "src" ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5479     # create link to source path
5480     [ -e src ] && rm src
5481     $ln_s "$source_path" src
5482     source_link=src
5483 else
5484     # creating directory links doesn't work
5485     # fall back to using the full source path
5486     source_link="$source_path"
5487 fi
5488 # cleanup
5489 rm -r "$link_dest"
5490 rm -r "$link_name"
5491
5492 # determine libc flavour
5493
5494 probe_libc(){
5495     pfx=$1
5496     pfx_no_=${pfx%_}
5497     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5498     if test_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5499         eval ${pfx}libc_type=uclibc
5500         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5501     elif test_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5502         eval ${pfx}libc_type=glibc
5503         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5504     # MinGW headers can be installed on Cygwin, so check for newlib first.
5505     elif test_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5506         eval ${pfx}libc_type=newlib
5507         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
5508     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5509     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5510         eval ${pfx}libc_type=mingw64
5511         if test_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5512             add_compat msvcrt/snprintf.o
5513             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5514         fi
5515         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5516         eval test \$${pfx_no_}cc_type = "gcc" &&
5517             add_${pfx}cppflags -D__printf__=__gnu_printf__
5518         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5519             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5520         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5521     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5522          test_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5523         eval ${pfx}libc_type=mingw32
5524         test_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5525             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5526             die "ERROR: MinGW32 runtime version must be >= 3.15."
5527         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5528         test_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
5529             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5530         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5531             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5532         eval test \$${pfx_no_}cc_type = "gcc" &&
5533             add_${pfx}cppflags -D__printf__=__gnu_printf__
5534         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5535     elif test_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5536         eval ${pfx}libc_type=msvcrt
5537         if test_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5538             if [ "$pfx" = host_ ]; then
5539                 add_host_cppflags -Dsnprintf=_snprintf
5540             else
5541                 add_compat strtod.o strtod=avpriv_strtod
5542                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5543                                              _snprintf=avpriv_snprintf  \
5544                                              vsnprintf=avpriv_vsnprintf
5545             fi
5546         fi
5547         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5548         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5549         # 0x601 by default unless something else is set by the user.
5550         # This can easily lead to us detecting functions only present
5551         # in such new versions and producing binaries requiring windows 7.0.
5552         # Therefore explicitly set the default to Vista unless the user has
5553         # set something else on the command line.
5554         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5555         # family. For these cases, configure is free to use any functions
5556         # found in the SDK headers by default. (Alternatively, we could force
5557         # _WIN32_WINNT to 0x0602 in that case.)
5558         test_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5559             { test_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0600; }
5560 #ifdef WINAPI_FAMILY
5561 #include <winapifamily.h>
5562 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5563 #error not desktop
5564 #endif
5565 #endif
5566 EOF
5567         if [ "$pfx" = "" ]; then
5568             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5569             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5570         fi
5571     elif test_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5572         eval ${pfx}libc_type=klibc
5573     elif test_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5574         eval ${pfx}libc_type=bionic
5575     elif test_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5576         eval ${pfx}libc_type=solaris
5577         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5578     elif test_${pfx}cpp_condition sys/version.h "defined __DJGPP__"; then
5579         eval ${pfx}libc_type=djgpp
5580         add_cppflags -U__STRICT_ANSI__
5581         add_cflags "-include $source_path/compat/djgpp/math.h"
5582         add_compat djgpp/math.o
5583     fi
5584     test_${pfx}cc <<EOF
5585 #include <time.h>
5586 void *v = localtime_r;
5587 EOF
5588 test "$?" != 0 && test_${pfx}cc -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 <<EOF && add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5589 #include <time.h>
5590 void *v = localtime_r;
5591 EOF
5592
5593     eval test -n "\${${pfx}libc_type}" && enable ${pfx}libc_${libc_type}
5594 }
5595
5596 probe_libc
5597 probe_libc host_
5598
5599 # hacks for compiler/libc/os combinations
5600
5601 case $libc_type in
5602     bionic)
5603         add_compat strtod.o strtod=avpriv_strtod
5604         ;;
5605 esac
5606
5607 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5608     add_cppflags '-I\$(SRC_PATH)/compat/float'
5609
5610 test_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5611
5612 set_default libdir
5613 : ${shlibdir_default:="$libdir"}
5614 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5615
5616 set_default $PATHS_LIST
5617 set_default nm
5618
5619 disabled optimizations || enabled ossfuzz || check_cflags -fomit-frame-pointer
5620
5621 enable_weak_pic() {
5622     disabled pic && return
5623     enable pic
5624     add_cppflags -DPIC
5625     case "$target_os" in
5626     mingw*|cygwin*|win*)
5627         ;;
5628     *)
5629         add_cflags -fPIC
5630         add_asflags -fPIC
5631         ;;
5632     esac
5633 }
5634
5635 enabled pic && enable_weak_pic
5636
5637 test_cc <<EOF || die "Symbol mangling check failed."
5638 int ff_extern;
5639 EOF
5640 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5641 extern_prefix=${sym%%ff_extern*}
5642
5643 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
5644
5645 for restrict_keyword in restrict __restrict__ __restrict ""; do
5646     test_code cc "" "char * $restrict_keyword p" && break
5647 done
5648
5649 check_cc pragma_deprecated "" '_Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"")'
5650
5651 # The global variable ensures the bits appear unchanged in the object file.
5652 test_cc <<EOF || die "endian test failed"
5653 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5654 EOF
5655 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5656
5657 check_cc const_nan math.h "struct { double d; } static const bar[] = { { NAN } }"
5658
5659 if ! enabled ppc64 || enabled bigendian; then
5660     disable vsx
5661 fi
5662
5663 check_gas() {
5664     log "check_gas using '$as' as AS"
5665     # :vararg is used on aarch64, arm and ppc altivec
5666     check_as vararg "
5667 .macro m n, y:vararg=0
5668 \n: .int \y
5669 .endm
5670 m x" || return 1
5671     # .altmacro is only used in arm asm
5672     ! enabled arm || check_as gnu_as ".altmacro"
5673 }
5674
5675 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5676     nogas=:
5677     enabled_any arm aarch64 && nogas=die
5678     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5679     as_noop=-v
5680
5681     case $as_type in
5682         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5683         gcc)  gaspp_as_type=gas ;;
5684         *)    gaspp_as_type=$as_type ;;
5685     esac
5686
5687     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5688
5689     test "${as#*gas-preprocessor.pl}" != "$as" ||
5690     test_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5691         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5692
5693     if ! check_gas ; then
5694         as=${gas:=$as}
5695         check_gas || \
5696             $nogas "GNU assembler not found, install/update gas-preprocessor"
5697     fi
5698
5699     check_as as_func ".func test
5700                       .endfunc"
5701 fi
5702
5703 check_inline_asm inline_asm_labels '"1:\n"'
5704
5705 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5706
5707 if enabled aarch64; then
5708     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5709     # internal assembler in clang 3.3 does not support this instruction
5710     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5711     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5712
5713     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5714
5715 elif enabled alpha; then
5716
5717     check_cflags -mieee
5718
5719 elif enabled arm; then
5720
5721     enabled msvc && check_cpp_condition thumb stddef.h "defined _M_ARMT"
5722     test_cpp_condition stddef.h "defined __thumb__" && test_cc <<EOF && enable_weak thumb
5723 float func(float a, float b){ return a+b; }
5724 EOF
5725     enabled thumb && check_cflags -mthumb || check_cflags -marm
5726
5727     if check_cpp_condition vfp_args stddef.h "defined __ARM_PCS_VFP"; then
5728         :
5729     elif check_cpp_condition vfp_args stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5730         :
5731     elif ! test_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5732         case "${cross_prefix:-$cc}" in
5733             *hardfloat*) enable vfp_args; fpabi=vfp ;;
5734             *) check_ld "cc" vfp_args <<EOF && fpabi=vfp || fpabi=soft ;;
5735 __asm__ (".eabi_attribute 28, 1");
5736 int main(void) { return 0; }
5737 EOF
5738         esac
5739         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5740     fi
5741
5742     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5743     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5744     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5745     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5746     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5747     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5748     enabled setend  && check_insn setend  'setend be'
5749
5750     [ $target_os = linux ] || [ $target_os = android ] ||
5751         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5752             $ARCH_EXT_LIST_ARM
5753
5754     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5755
5756     check_as as_arch_directive ".arch armv7-a"
5757     check_as as_dn_directive   "ra .dn d0.i16"
5758     check_as as_fpu_directive  ".fpu neon"
5759
5760     # llvm's integrated assembler supports .object_arch from llvm 3.5
5761     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
5762         check_as as_object_arch ".object_arch armv4"
5763
5764     # MS armasm fails to assemble our PIC constructs
5765     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5766
5767 elif enabled mips; then
5768
5769     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5770     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5771     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5772
5773     # Enable minimum ISA based on selected options
5774     if enabled mips64; then
5775         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5776         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5777         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5778     else
5779         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5780         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5781         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5782         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5783     fi
5784
5785     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5786     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5787     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_headers msa.h || disable msa
5788     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5789     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5790     enabled msa && enabled msa2 && check_inline_asm_flags msa2 '"nxbits.any.b $w0, $w0"' '-mmsa2' && check_headers msa2.h || disable msa2
5791
5792     if enabled bigendian && enabled msa; then
5793         disable msa
5794     fi
5795
5796 elif enabled parisc; then
5797
5798     if enabled gcc; then
5799         case $($cc -dumpversion) in
5800             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5801         esac
5802     fi
5803
5804 elif enabled ppc; then
5805
5806     enable local_aligned
5807
5808     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5809     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5810     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5811     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5812
5813     if enabled altivec; then
5814         check_cflags -maltivec -mabi=altivec
5815
5816         # check if our compiler supports Motorola AltiVec C API
5817         check_cc altivec altivec.h "vector signed int v1 = (vector signed int) { 0 };
5818                                     vector signed int v2 = (vector signed int) { 1 };
5819                                     v1 = vec_add(v1, v2);"
5820
5821         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5822     fi
5823
5824     if enabled vsx; then
5825         check_cflags -mvsx &&
5826         check_cc vsx altivec.h "int v[4] = { 0 };
5827                                 vector signed int v1 = vec_vsx_ld(0, v);"
5828     fi
5829
5830     if enabled power8; then
5831         check_cpp_condition power8 "altivec.h" "defined(_ARCH_PWR8)"
5832     fi
5833
5834 elif enabled x86; then
5835
5836     check_builtin rdtsc    intrin.h   "__rdtsc()"
5837     check_builtin mm_empty mmintrin.h "_mm_empty()"
5838
5839     enable local_aligned
5840
5841     # check whether EBP is available on x86
5842     # As 'i' is stored on the stack, this program will crash
5843     # if the base pointer is used to access it because the
5844     # base pointer is cleared in the inline assembly code.
5845     check_exec_crash <<EOF && enable ebp_available
5846 volatile int i=0;
5847 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5848 return i;
5849 EOF
5850
5851     # check whether EBX is available on x86
5852     check_inline_asm ebx_available '""::"b"(0)' &&
5853         check_inline_asm ebx_available '"":::"%ebx"'
5854
5855     # check whether xmm clobbers are supported
5856     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5857
5858     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5859         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5860
5861     # check whether binutils is new enough to compile SSSE3/MMXEXT
5862     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5863     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5864
5865     probe_x86asm(){
5866         x86asmexe_probe=$1
5867         if test_cmd $x86asmexe_probe -v; then
5868             x86asmexe=$x86asmexe_probe
5869             x86asm_type=nasm
5870             x86asm_debug="-g -F dwarf"
5871             X86ASMDEP=
5872             X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
5873         elif test_cmd $x86asmexe_probe --version; then
5874             x86asmexe=$x86asmexe_probe
5875             x86asm_type=yasm
5876             x86asm_debug="-g dwarf2"
5877             X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
5878             X86ASM_DEPFLAGS=
5879         fi
5880         check_x86asm x86asm "movbe ecx, [5]"
5881     }
5882
5883     if ! disabled_any asm mmx x86asm; then
5884         disable x86asm
5885         for program in $x86asmexe nasm yasm; do
5886             probe_x86asm $program && break
5887         done
5888         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
5889         X86ASMFLAGS="-f $objformat"
5890         enabled pic               && append X86ASMFLAGS "-DPIC"
5891         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
5892         case "$objformat" in
5893             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
5894         esac
5895
5896         check_x86asm avx512_external "vmovdqa32 [eax]{k1}{z}, zmm0"
5897         check_x86asm avx2_external   "vextracti128 xmm0, ymm0, 0"
5898         check_x86asm xop_external    "vpmacsdd xmm0, xmm1, xmm2, xmm3"
5899         check_x86asm fma4_external   "vfmaddps ymm0, ymm1, ymm2, ymm3"
5900         check_x86asm cpunop          "CPU amdnop"
5901     fi
5902
5903     case "$cpu" in
5904         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5905             disable fast_clz
5906         ;;
5907     esac
5908
5909 fi
5910
5911 check_cc intrinsics_neon arm_neon.h "int16x8_t test = vdupq_n_s16(0)"
5912
5913 check_ldflags -Wl,--as-needed
5914 check_ldflags -Wl,-z,noexecstack
5915
5916 if ! disabled network; then
5917     check_func getaddrinfo $network_extralibs
5918     check_func inet_aton $network_extralibs
5919
5920     check_type netdb.h "struct addrinfo"
5921     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5922     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5923     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5924     check_type poll.h "struct pollfd"
5925     check_type netinet/sctp.h "struct sctp_event_subscribe"
5926     check_struct "sys/socket.h" "struct msghdr" msg_flags
5927     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5928     check_type netinet/in.h "struct sockaddr_in6"
5929     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5930     check_type "sys/types.h sys/socket.h" socklen_t
5931
5932     # Prefer arpa/inet.h over winsock2
5933     if check_headers arpa/inet.h ; then
5934         check_func closesocket
5935     elif check_headers winsock2.h ; then
5936         check_func_headers winsock2.h closesocket -lws2 &&
5937             network_extralibs="-lws2" ||
5938         { check_func_headers winsock2.h closesocket -lws2_32 &&
5939             network_extralibs="-lws2_32"; } || disable winsock2_h network
5940         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5941
5942         check_type ws2tcpip.h socklen_t
5943         check_type ws2tcpip.h "struct addrinfo"
5944         check_type ws2tcpip.h "struct group_source_req"
5945         check_type ws2tcpip.h "struct ip_mreq_source"
5946         check_type ws2tcpip.h "struct ipv6_mreq"
5947         check_type winsock2.h "struct pollfd"
5948         check_struct winsock2.h "struct sockaddr" sa_len
5949         check_type ws2tcpip.h "struct sockaddr_in6"
5950         check_type ws2tcpip.h "struct sockaddr_storage"
5951     else
5952         disable network
5953     fi
5954 fi
5955
5956 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5957 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5958 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5959 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5960 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5961 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5962 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5963
5964 case "$custom_allocator" in
5965     jemalloc)
5966         # jemalloc by default does not use a prefix
5967         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5968     ;;
5969     tcmalloc)
5970         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
5971         malloc_prefix=tc_
5972     ;;
5973 esac
5974
5975 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5976 check_func  ${malloc_prefix}memalign            && enable memalign
5977 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5978
5979 check_func  access
5980 check_func_headers stdlib.h arc4random
5981 check_lib   clock_gettime time.h clock_gettime || check_lib clock_gettime time.h clock_gettime -lrt
5982 check_func  fcntl
5983 check_func  fork
5984 check_func  gethrtime
5985 check_func  getopt
5986 check_func  getrusage
5987 check_func  gettimeofday
5988 check_func  isatty
5989 check_func  mkstemp
5990 check_func  mmap
5991 check_func  mprotect
5992 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5993 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
5994 check_func  sched_getaffinity
5995 check_func  setrlimit
5996 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5997 check_func  strerror_r
5998 check_func  sysconf
5999 check_func  sysctl
6000 check_func  usleep
6001
6002 check_func_headers conio.h kbhit
6003 check_func_headers io.h setmode
6004 check_func_headers lzo/lzo1x.h lzo1x_999_compress
6005 check_func_headers mach/mach_time.h mach_absolute_time
6006 check_func_headers stdlib.h getenv
6007 check_func_headers sys/stat.h lstat
6008
6009 check_func_headers windows.h GetProcessAffinityMask
6010 check_func_headers windows.h GetProcessTimes
6011 check_func_headers windows.h GetSystemTimeAsFileTime
6012 check_func_headers windows.h LoadLibrary
6013 check_func_headers windows.h MapViewOfFile
6014 check_func_headers windows.h PeekNamedPipe
6015 check_func_headers windows.h SetConsoleTextAttribute
6016 check_func_headers windows.h SetConsoleCtrlHandler
6017 check_func_headers windows.h Sleep
6018 check_func_headers windows.h VirtualAlloc
6019 check_func_headers glob.h glob
6020 enabled xlib &&
6021     check_lib xlib "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
6022
6023 check_headers direct.h
6024 check_headers dirent.h
6025 check_headers dxgidebug.h
6026 check_headers dxva.h
6027 check_headers dxva2api.h -D_WIN32_WINNT=0x0600
6028 check_headers io.h
6029 check_headers linux/perf_event.h
6030 check_headers libcrystalhd/libcrystalhd_if.h
6031 check_headers malloc.h
6032 check_headers net/udplite.h
6033 check_headers poll.h
6034 check_headers sys/param.h
6035 check_headers sys/resource.h
6036 check_headers sys/select.h
6037 check_headers sys/time.h
6038 check_headers sys/un.h
6039 check_headers termios.h
6040 check_headers unistd.h
6041 check_headers valgrind/valgrind.h
6042 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
6043 check_headers windows.h
6044 check_headers X11/extensions/XvMClib.h
6045 check_headers asm/types.h
6046
6047 # it seems there are versions of clang in some distros that try to use the
6048 # gcc headers, which explodes for stdatomic
6049 # so we also check that atomics actually work here
6050 check_builtin stdatomic stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0); foo += bar"
6051
6052 check_lib advapi32 "windows.h"            RegCloseKey          -ladvapi32
6053 check_lib bcrypt   "windows.h bcrypt.h"   BCryptGenRandom      -lbcrypt &&
6054     check_cpp_condition bcrypt bcrypt.h "defined BCRYPT_RNG_ALGORITHM"
6055 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
6056 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
6057 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
6058
6059 check_lib android android/native_window.h ANativeWindow_acquire -landroid
6060 check_lib mediandk "stdint.h media/NdkImage.h" AImage_delete -lmediandk
6061 check_lib camera2ndk "stdbool.h stdint.h camera/NdkCameraManager.h" ACameraManager_create -lcamera2ndk
6062
6063 enabled appkit       && check_apple_framework AppKit
6064 enabled audiotoolbox && check_apple_framework AudioToolbox
6065 enabled avfoundation && check_apple_framework AVFoundation
6066 enabled coreimage    && check_apple_framework CoreImage
6067 enabled videotoolbox && check_apple_framework VideoToolbox
6068
6069 check_apple_framework CoreFoundation
6070 check_apple_framework CoreMedia
6071 check_apple_framework CoreVideo
6072
6073 enabled avfoundation && {
6074     disable coregraphics applicationservices
6075     check_lib coregraphics        CoreGraphics/CoreGraphics.h               CGGetActiveDisplayList "-framework CoreGraphics" ||
6076     check_lib applicationservices ApplicationServices/ApplicationServices.h CGGetActiveDisplayList "-framework ApplicationServices"; }
6077
6078 enabled videotoolbox && {
6079     check_lib coreservices CoreServices/CoreServices.h UTGetOSTypeFromString "-framework CoreServices"
6080     check_func_headers CoreMedia/CMFormatDescription.h kCMVideoCodecType_HEVC "-framework CoreMedia"
6081     check_func_headers CoreVideo/CVPixelBuffer.h kCVPixelFormatType_420YpCbCr10BiPlanarVideoRange "-framework CoreVideo"
6082     check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferTransferFunction_SMPTE_ST_2084_PQ "-framework CoreVideo"
6083     check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferTransferFunction_ITU_R_2100_HLG "-framework CoreVideo"
6084     check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferTransferFunction_Linear "-framework CoreVideo"
6085 }
6086
6087 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
6088
6089 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
6090 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
6091 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
6092 check_type "windows.h d3d11.h" "ID3D11VideoContext"
6093 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
6094
6095 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
6096
6097 if [ -z "$nvccflags" ]; then
6098     nvccflags=$nvccflags_default
6099 fi
6100
6101 if enabled x86_64 || enabled ppc64 || enabled aarch64; then
6102     nvccflags="$nvccflags -m64"
6103 else
6104     nvccflags="$nvccflags -m32"
6105 fi
6106
6107 if enabled cuda_nvcc; then
6108     nvccflags="$nvccflags -ptx"
6109 else
6110     nvccflags="$nvccflags -S -nocudalib -nocudainc --cuda-device-only -include ${source_link}/compat/cuda/cuda_runtime.h"
6111     check_nvcc cuda_llvm
6112 fi
6113
6114 if ! disabled ffnvcodec; then
6115     ffnv_hdr_list="ffnvcodec/nvEncodeAPI.h ffnvcodec/dynlink_cuda.h ffnvcodec/dynlink_cuviddec.h ffnvcodec/dynlink_nvcuvid.h"
6116     check_pkg_config ffnvcodec "ffnvcodec >= 9.0.18.0" "$ffnv_hdr_list" "" || \
6117       check_pkg_config ffnvcodec "ffnvcodec >= 8.2.15.8 ffnvcodec < 8.3" "$ffnv_hdr_list" "" || \
6118       check_pkg_config ffnvcodec "ffnvcodec >= 8.1.24.9 ffnvcodec < 8.2" "$ffnv_hdr_list" "" || \
6119       check_pkg_config ffnvcodec "ffnvcodec >= 8.0.14.9 ffnvcodec < 8.1" "$ffnv_hdr_list" ""
6120 fi
6121
6122 check_cpp_condition winrt windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)"
6123
6124 if ! disabled w32threads && ! enabled pthreads; then
6125     check_func_headers "windows.h process.h" _beginthreadex &&
6126         check_type "windows.h" CONDITION_VARIABLE &&
6127         check_type "windows.h" INIT_ONCE &&
6128         enable w32threads || disable w32threads
6129     if ! enabled w32threads && enabled winrt; then
6130         check_func_headers "windows.h" CreateThread &&
6131             enable w32threads || disable w32threads
6132     fi
6133 fi
6134
6135 # check for some common methods of building with pthread support
6136 # do this before the optional library checks as some of them require pthreads
6137 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
6138     if check_lib pthreads pthread.h pthread_join   -pthread &&
6139        check_lib pthreads pthread.h pthread_create -pthread; then
6140         add_cflags -pthread
6141     elif check_lib pthreads pthread.h pthread_join   -pthreads &&
6142          check_lib pthreads pthread.h pthread_create -pthreads; then
6143         add_cflags -pthreads
6144     elif check_lib pthreads pthread.h pthread_join   -ldl -pthread &&
6145          check_lib pthreads pthread.h pthread_create -ldl -pthread; then
6146         add_cflags -ldl -pthread
6147     elif check_lib pthreads pthread.h pthread_join   -lpthreadGC2 &&
6148          check_lib pthreads pthread.h pthread_create -lpthreadGC2; then
6149         :
6150     elif check_lib pthreads pthread.h pthread_join   -lpthread &&
6151          check_lib pthreads pthread.h pthread_create -lpthread; then
6152         :
6153     elif check_func pthread_join && check_func pthread_create; then
6154         enable pthreads
6155     fi
6156     check_cc pthreads "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER"
6157
6158     if enabled pthreads; then
6159         check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
6160         check_func pthread_cancel $pthreads_extralibs
6161     fi
6162 fi
6163
6164 enabled  zlib && { check_pkg_config zlib zlib "zlib.h" zlibVersion ||
6165                    check_lib zlib   zlib.h      zlibVersion    -lz; }
6166 enabled bzlib && check_lib bzlib bzlib.h BZ2_bzlibVersion    -lbz2
6167 enabled  lzma && check_lib lzma   lzma.h lzma_version_number -llzma
6168
6169 # On some systems dynamic loading requires no extra linker flags
6170 check_lib libdl dlfcn.h "dlopen dlsym" || check_lib libdl dlfcn.h "dlopen dlsym" -ldl
6171
6172 check_lib libm math.h sin -lm
6173
6174 atan2f_args=2
6175 copysign_args=2
6176 hypot_args=2
6177 ldexpf_args=2
6178 powf_args=2
6179
6180 for func in $MATH_FUNCS; do
6181     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
6182 done
6183
6184 for func in $COMPLEX_FUNCS; do
6185     eval check_complexfunc $func \${${func}_args:-1}
6186 done
6187
6188 # these are off by default, so fail if requested and not available
6189 enabled cuda_nvcc         && { check_nvcc cuda_nvcc || die "ERROR: failed checking for nvcc."; }
6190 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
6191 enabled decklink          && { require_headers DeckLinkAPI.h &&
6192                                { test_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a090500" || die "ERROR: Decklink API version must be >= 10.9.5."; } }
6193 enabled frei0r            && require_headers "frei0r.h dlfcn.h"
6194 enabled gmp               && require gmp gmp.h mpz_export -lgmp
6195 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init
6196 enabled jni               && { [ $target_os = "android" ] && check_headers jni.h && enabled pthreads || die "ERROR: jni not found"; }
6197 enabled ladspa            && require_headers "ladspa.h dlfcn.h"
6198 enabled libaom            && require_pkg_config libaom "aom >= 1.0.0" aom/aom_codec.h aom_codec_version
6199 enabled libaribb24        && { check_pkg_config libaribb24 "aribb24 > 1.0.3" "aribb24/aribb24.h" arib_instance_new ||
6200                                { enabled gpl && require_pkg_config libaribb24 aribb24 "aribb24/aribb24.h" arib_instance_new; } ||
6201                                die "ERROR: libaribb24 requires version higher than 1.0.3 or --enable-gpl."; }
6202 enabled lv2               && require_pkg_config lv2 lilv-0 "lilv/lilv.h" lilv_world_new
6203 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
6204 enabled libass            && require_pkg_config libass libass ass/ass.h ass_library_init
6205 enabled libbluray         && require_pkg_config libbluray libbluray libbluray/bluray.h bd_open
6206 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
6207 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
6208                              { check_lib libcelt celt/celt.h celt_decoder_create_custom -lcelt0 ||
6209                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
6210 enabled libcaca           && require_pkg_config libcaca caca caca.h caca_create_canvas
6211 enabled libcodec2         && require libcodec2 codec2/codec2.h codec2_create -lcodec2
6212 enabled libdav1d          && require_pkg_config libdav1d "dav1d >= 0.4.0" "dav1d/dav1d.h" dav1d_version
6213 enabled libdavs2          && require_pkg_config libdavs2 "davs2 >= 1.6.0" davs2.h davs2_decoder_open
6214 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
6215 enabled libdrm            && require_pkg_config libdrm libdrm xf86drm.h drmGetVersion
6216 enabled libfdk_aac        && { check_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
6217                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
6218                                  warn "using libfdk without pkg-config"; } }
6219 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"
6220 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_extralibs
6221 enabled fontconfig        && enable libfontconfig
6222 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
6223 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
6224 enabled libfribidi        && require_pkg_config libfribidi fribidi fribidi.h fribidi_version_info
6225 enabled libgme            && { check_pkg_config libgme libgme gme/gme.h gme_new_emu ||
6226                                require libgme gme/gme.h gme_new_emu -lgme -lstdc++; }
6227 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
6228                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
6229                                done || die "ERROR: libgsm not found"; }
6230 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc $pthreads_extralibs
6231 enabled libklvanc         && require libklvanc libklvanc/vanc.h klvanc_context_create -lklvanc
6232 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
6233 enabled liblensfun        && require_pkg_config liblensfun lensfun lensfun.h lf_db_new
6234 # While it may appear that require is being used as a pkg-config
6235 # fallback for libmfx, it is actually being used to detect a different
6236 # installation route altogether.  If libmfx is installed via the Intel
6237 # Media SDK or Intel Media Server Studio, these don't come with
6238 # pkg-config support.  Instead, users should make sure that the build
6239 # can find the libraries and headers through other means.
6240 enabled libmfx            && { check_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit ||
6241                                { require libmfx "mfx/mfxvideo.h" MFXInit "-llibmfx $advapi32_extralibs" && warn "using libmfx without pkg-config"; } }
6242 enabled libmodplug        && require_pkg_config libmodplug libmodplug libmodplug/modplug.h ModPlug_Load
6243 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame $libm_extralibs
6244 enabled libmysofa         && { check_pkg_config libmysofa libmysofa mysofa.h mysofa_neighborhood_init_withstepdefine ||
6245                                require libmysofa mysofa.h mysofa_neighborhood_init_withstepdefine -lmysofa $zlib_extralibs; }
6246 enabled libnpp            && { check_lib libnpp npp.h nppGetLibVersion -lnppig -lnppicc -lnppc -lnppidei ||
6247                                check_lib libnpp npp.h nppGetLibVersion -lnppi -lnppc -lnppidei ||
6248                                die "ERROR: libnpp not found"; }
6249 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
6250 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
6251 enabled libopencv         && { check_headers opencv2/core/core_c.h &&
6252                                { check_pkg_config libopencv opencv opencv2/core/core_c.h cvCreateImageHeader ||
6253                                  require libopencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
6254                                require_pkg_config libopencv opencv opencv/cxcore.h cvCreateImageHeader; }
6255 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
6256 enabled libopenjpeg       && { check_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version ||
6257                                { require_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } }
6258 enabled libopenmpt        && require_pkg_config libopenmpt "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create -lstdc++ && append libopenmpt_extralibs "-lstdc++"
6259 enabled libopus           && {
6260     enabled libopus_decoder && {
6261         require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
6262     }
6263     enabled libopus_encoder && {
6264         require_pkg_config libopus opus opus_multistream.h opus_multistream_surround_encoder_create
6265     }
6266 }
6267 enabled libpulse          && require_pkg_config libpulse libpulse pulse/pulseaudio.h pa_context_new
6268 enabled librsvg           && require_pkg_config librsvg librsvg-2.0 librsvg-2.0/librsvg/rsvg.h rsvg_handle_render_cairo
6269 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
6270 enabled librubberband     && require_pkg_config librubberband "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new -lstdc++ && append librubberband_extralibs "-lstdc++"
6271 enabled libshine          && require_pkg_config libshine shine shine/layer3.h shine_encode_buffer
6272 enabled libsmbclient      && { check_pkg_config libsmbclient smbclient libsmbclient.h smbc_init ||
6273                                require libsmbclient libsmbclient.h smbc_init -lsmbclient; }
6274 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy -lstdc++
6275 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
6276 enabled libssh            && require_pkg_config libssh libssh libssh/sftp.h sftp_init
6277 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init
6278 enabled libsrt            && require_pkg_config libsrt "srt >= 1.3.0" srt/srt.h srt_socket
6279 enabled libtensorflow     && require libtensorflow tensorflow/c/c_api.h TF_Version -ltensorflow
6280 enabled libtesseract      && require_pkg_config libtesseract tesseract tesseract/capi.h TessBaseAPICreate
6281 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
6282 enabled libtls            && require_pkg_config libtls libtls tls.h tls_configure
6283 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
6284                              { check_lib libtwolame twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
6285                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
6286 enabled libv4l2           && require_pkg_config libv4l2 libv4l2 libv4l2.h v4l2_ioctl
6287 enabled libvidstab        && require_pkg_config libvidstab "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
6288 enabled libvmaf           && require_pkg_config libvmaf "libvmaf >= 1.3.9" libvmaf.h compute_vmaf
6289 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
6290 enabled libvorbis         && require_pkg_config libvorbis vorbis vorbis/codec.h vorbis_info_init &&
6291                              require_pkg_config libvorbisenc vorbisenc vorbis/vorbisenc.h vorbis_encode_init
6292
6293 enabled libvpx            && {
6294     enabled libvpx_vp8_decoder && {
6295         check_pkg_config libvpx_vp8_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
6296             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"
6297     }
6298     enabled libvpx_vp8_encoder && {
6299         check_pkg_config libvpx_vp8_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
6300             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"
6301     }
6302     enabled libvpx_vp9_decoder && {
6303         check_pkg_config libvpx_vp9_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
6304             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"
6305     }
6306     enabled libvpx_vp9_encoder && {
6307         check_pkg_config libvpx_vp9_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
6308             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"
6309     }
6310     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
6311         die "libvpx enabled but no supported decoders found"
6312     fi
6313 }
6314
6315 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
6316 enabled libwebp           && {
6317     enabled libwebp_encoder      && require_pkg_config libwebp "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
6318     enabled libwebp_anim_encoder && check_pkg_config libwebp_anim_encoder "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit; }
6319 enabled libx264           && { check_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode ||
6320                                { require libx264 "stdint.h x264.h" x264_encoder_encode "-lx264 $pthreads_extralibs $libm_extralibs" &&
6321                                  warn "using libx264 without pkg-config"; } } &&
6322                              require_cpp_condition libx264 x264.h "X264_BUILD >= 118" &&
6323                              check_cpp_condition libx262 x264.h "X264_MPEG2"
6324 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
6325                              require_cpp_condition libx265 x265.h "X265_BUILD >= 68"
6326 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode "-lxavs $pthreads_extralibs $libm_extralibs"
6327 enabled libxavs2          && require_pkg_config libxavs2 "xavs2 >= 1.3.0" "stdint.h xavs2.h" xavs2_api_get
6328 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
6329 enabled libzimg           && require_pkg_config libzimg "zimg >= 2.7.0" zimg.h zimg_get_api_version
6330 enabled libzmq            && require_pkg_config libzmq "libzmq >= 4.2.1" zmq.h zmq_ctx_new
6331 enabled libzvbi           && require_pkg_config libzvbi zvbi-0.2 libzvbi.h vbi_decoder_new &&
6332                              { test_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
6333                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
6334 enabled libxml2           && require_pkg_config libxml2 libxml-2.0 libxml2/libxml/xmlversion.h xmlCheckVersion
6335 enabled mbedtls           && { check_pkg_config mbedtls mbedtls mbedtls/x509_crt.h mbedtls_x509_crt_init ||
6336                                check_pkg_config mbedtls mbedtls mbedtls/ssl.h mbedtls_ssl_init ||
6337                                check_lib mbedtls mbedtls/ssl.h mbedtls_ssl_init -lmbedtls -lmbedx509 -lmbedcrypto ||
6338                                die "ERROR: mbedTLS not found"; }
6339 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
6340 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
6341                                { ! enabled cross_compile &&
6342                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
6343                                  add_ldflags -L/opt/vc/lib/ &&
6344                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
6345                                die "ERROR: mmal not found" &&
6346                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
6347 enabled openal            && { { for al_extralibs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
6348                                check_lib openal 'AL/al.h' alGetError "${al_extralibs}" && break; done } ||
6349                                die "ERROR: openal not found"; } &&
6350                              { test_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
6351                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
6352 enabled opencl            && { check_pkg_config opencl OpenCL CL/cl.h clEnqueueNDRangeKernel ||
6353                                check_lib opencl OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
6354                                check_lib opencl CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
6355                                die "ERROR: opencl not found"; } &&
6356                              { test_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
6357                                test_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
6358                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
6359 enabled opengl            && { check_lib opengl GL/glx.h glXGetProcAddress "-lGL" ||
6360                                check_lib opengl windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
6361                                check_lib opengl OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
6362                                check_lib opengl ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
6363                                die "ERROR: opengl not found."
6364                              }
6365 enabled omx_rpi           && { test_code cc OMX_Core.h OMX_IndexConfigBrcmVideoRequestIFrame ||
6366                                { ! enabled cross_compile &&
6367                                  add_cflags -isystem/opt/vc/include/IL &&
6368                                  test_code cc OMX_Core.h OMX_IndexConfigBrcmVideoRequestIFrame; } ||
6369                                die "ERROR: OpenMAX IL headers from raspberrypi/firmware not found"; } &&
6370                              enable omx
6371 enabled omx               && require_headers OMX_Core.h
6372 enabled openssl           && { check_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
6373                                check_pkg_config openssl openssl openssl/ssl.h SSL_library_init ||
6374                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
6375                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
6376                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
6377                                die "ERROR: openssl not found"; }
6378 enabled pocketsphinx      && require_pkg_config pocketsphinx pocketsphinx pocketsphinx/pocketsphinx.h ps_init
6379 enabled rkmpp             && { require_pkg_config rkmpp rockchip_mpp  rockchip/rk_mpi.h mpp_create &&
6380                                require_pkg_config rockchip_mpp "rockchip_mpp >= 1.3.7" rockchip/rk_mpi.h mpp_create &&
6381                                { enabled libdrm ||
6382                                  die "ERROR: rkmpp requires --enable-libdrm"; }
6383                              }
6384 enabled vapoursynth       && require_pkg_config vapoursynth "vapoursynth-script >= 42" VSScript.h vsscript_init
6385
6386
6387 if enabled gcrypt; then
6388     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
6389     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
6390         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
6391         gcrypt_extralibs=$("${GCRYPT_CONFIG}" --libs)
6392         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_extralibs ||
6393             die "ERROR: gcrypt not found"
6394         add_cflags $gcrypt_cflags
6395     else
6396         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
6397     fi
6398 fi
6399
6400 if enabled sdl2; then
6401     SDL2_CONFIG="${cross_prefix}sdl2-config"
6402     test_pkg_config sdl2 "sdl2 >= 2.0.1 sdl2 < 2.1.0" SDL_events.h SDL_PollEvent
6403     if disabled sdl2 && "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
6404         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
6405         sdl2_extralibs=$("${SDL2_CONFIG}" --libs)
6406         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
6407         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
6408         check_func_headers SDL_events.h SDL_PollEvent $sdl2_extralibs $sdl2_cflags &&
6409             enable sdl2
6410     fi
6411     if test $target_os = "mingw32"; then
6412         sdl2_extralibs=$(filter_out '-mwindows' $sdl2_extralibs)
6413     fi
6414 fi
6415
6416 if enabled decklink; then
6417     case $target_os in
6418         mingw32*|mingw64*|win32|win64)
6419             decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
6420             decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
6421             ;;
6422     esac
6423 fi
6424
6425 enabled securetransport &&
6426     check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
6427     check_lib securetransport "Security/SecureTransport.h Security/Security.h" "SSLCreateContext" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" ||
6428         disable securetransport
6429
6430 enabled securetransport &&
6431     check_func SecItemImport "-Wl,-framework,CoreFoundation -Wl,-framework,Security"
6432
6433 enabled schannel &&
6434     check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
6435     test_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" &&
6436     schannel_extralibs="-lsecur32" ||
6437         disable schannel
6438
6439 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
6440 enabled makeinfo \
6441     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
6442     && enable makeinfo_html || disable makeinfo_html
6443 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
6444 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
6445 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
6446 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
6447
6448 # check V4L2 codecs available in the API
6449 check_headers linux/fb.h
6450 check_headers linux/videodev2.h
6451 test_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6452 check_cc v4l2_m2m linux/videodev2.h "int i = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_VIDEO_M2M | V4L2_BUF_FLAG_LAST;"
6453 check_cc vc1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VC1_ANNEX_G;"
6454 check_cc mpeg1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG1;"
6455 check_cc mpeg2_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG2;"
6456 check_cc mpeg4_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG4;"
6457 check_cc hevc_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_HEVC;"
6458 check_cc h263_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H263;"
6459 check_cc h264_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H264;"
6460 check_cc vp8_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP8;"
6461 check_cc vp9_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP9;"
6462
6463 check_headers sys/videoio.h
6464 test_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6465
6466 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
6467 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
6468 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
6469 # w32api 3.12 had it defined wrong
6470 check_cpp_condition vfwcap_defines vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER"
6471
6472 check_type "dshow.h" IBaseFilter
6473
6474 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
6475 check_headers "dev/bktr/ioctl_meteor.h dev/bktr/ioctl_bt848.h"                   ||
6476     check_headers "machine/ioctl_meteor.h machine/ioctl_bt848.h"                 ||
6477     check_headers "dev/video/meteor/ioctl_meteor.h dev/video/bktr/ioctl_bt848.h" ||
6478     check_headers "dev/ic/bt8xx.h"
6479
6480 if check_struct sys/soundcard.h audio_buf_info bytes; then
6481     enable_sanitized sys/soundcard.h
6482 else
6483     test_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_sanitized sys/soundcard.h
6484     #include <sys/soundcard.h>
6485     audio_buf_info abc;
6486 EOF
6487 fi
6488
6489 enabled alsa && check_pkg_config alsa alsa "alsa/asoundlib.h" snd_pcm_htimestamp ||
6490     check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound
6491
6492 enabled libjack &&
6493     require_pkg_config libjack jack jack/jack.h jack_port_get_latency_range
6494
6495 enabled sndio && check_lib sndio sndio.h sio_open -lsndio
6496
6497 if enabled libcdio; then
6498     check_pkg_config libcdio libcdio_paranoia "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open ||
6499     check_pkg_config libcdio libcdio_paranoia "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open ||
6500     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6501     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6502     die "ERROR: No usable libcdio/cdparanoia found"
6503 fi
6504
6505 enabled libxcb && check_pkg_config libxcb "xcb >= 1.4" xcb/xcb.h xcb_connect ||
6506     disable libxcb_shm libxcb_shape libxcb_xfixes
6507
6508 if enabled libxcb; then
6509     enabled libxcb_shm    && check_pkg_config libxcb_shm    xcb-shm    xcb/shm.h    xcb_shm_attach
6510     enabled libxcb_shape  && check_pkg_config libxcb_shape  xcb-shape  xcb/shape.h  xcb_shape_get_rectangles
6511     enabled libxcb_xfixes && check_pkg_config libxcb_xfixes xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image
6512 fi
6513
6514 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6515
6516 # d3d11va requires linking directly to dxgi and d3d11 if not building for
6517 # the desktop api partition
6518 test_cpp <<EOF && enable uwp && d3d11va_extralibs="-ldxgi -ld3d11"
6519 #ifdef WINAPI_FAMILY
6520 #include <winapifamily.h>
6521 #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
6522 #error desktop, not uwp
6523 #else
6524 // WINAPI_FAMILY_APP, WINAPI_FAMILY_PHONE_APP => UWP
6525 #endif
6526 #else
6527 #error no family set
6528 #endif
6529 EOF
6530
6531 enabled vaapi &&
6532     check_pkg_config vaapi "libva >= 0.35.0" "va/va.h" vaInitialize
6533
6534 if enabled vaapi; then
6535     check_pkg_config vaapi_drm "libva-drm" "va/va_drm.h" vaGetDisplayDRM
6536
6537     if enabled xlib; then
6538         check_pkg_config vaapi_x11 "libva-x11" "va/va_x11.h" vaGetDisplay
6539     fi
6540
6541     check_cpp_condition vaapi_1 "va/va.h" "VA_CHECK_VERSION(1, 0, 0)"
6542
6543     check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
6544     check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
6545     check_struct "va/va.h va/va_vpp.h" "VAProcPipelineCaps" rotation_flags
6546     check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
6547     check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
6548     check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
6549     check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
6550 fi
6551
6552 if enabled_all opencl libdrm ; then
6553     check_type "CL/cl_intel.h" "clCreateImageFromFdINTEL_fn" &&
6554         enable opencl_drm_beignet
6555     check_func_headers "CL/cl_ext.h" clImportMemoryARM &&
6556         enable opencl_drm_arm
6557 fi
6558
6559 if enabled_all opencl vaapi ; then
6560     if enabled opencl_drm_beignet ; then
6561         enable opencl_vaapi_beignet
6562     else
6563         check_type "CL/cl.h CL/cl_va_api_media_sharing_intel.h" "clCreateFromVA_APIMediaSurfaceINTEL_fn" &&
6564             enable opencl_vaapi_intel_media
6565     fi
6566 fi
6567
6568 if enabled_all opencl dxva2 ; then
6569     check_type "CL/cl_dx9_media_sharing.h" cl_dx9_surface_info_khr &&
6570         enable opencl_dxva2
6571 fi
6572
6573 if enabled_all opencl d3d11va ; then
6574     check_type "CL/cl_d3d11.h" clGetDeviceIDsFromD3D11KHR_fn &&
6575         enable opencl_d3d11
6576 fi
6577
6578 enabled vdpau &&
6579     check_cpp_condition vdpau vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP"
6580
6581 enabled vdpau &&
6582     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
6583
6584 enabled crystalhd && check_lib crystalhd "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd
6585
6586 if enabled x86; then
6587     case $target_os in
6588         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6589             ;;
6590         *)
6591             disable ffnvcodec cuvid nvdec nvenc
6592             ;;
6593     esac
6594 elif enabled ppc64 && ! enabled bigendian; then
6595     case $target_os in
6596         linux)
6597             ;;
6598         *)
6599             disable ffnvcodec cuvid nvdec nvenc
6600             ;;
6601     esac
6602 else
6603     disable ffnvcodec cuvid nvdec nvenc
6604 fi
6605
6606 enabled ffnvcodec && enable cuda
6607
6608 enabled nvenc &&
6609     test_cc -I$source_path <<EOF || disable nvenc
6610 #include <ffnvcodec/nvEncodeAPI.h>
6611 NV_ENCODE_API_FUNCTION_LIST flist;
6612 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6613 int main(void) { return 0; }
6614 EOF
6615
6616 enabled amf &&
6617     check_cpp_condition amf "AMF/core/Version.h" \
6618         "(AMF_VERSION_MAJOR << 48 | AMF_VERSION_MINOR << 32 | AMF_VERSION_RELEASE << 16 | AMF_VERSION_BUILD_NUM) >= 0x0001000400040001"
6619
6620 # Funny iconv installations are not unusual, so check it after all flags have been set
6621 if enabled libc_iconv; then
6622     check_func_headers iconv.h iconv
6623 elif enabled iconv; then
6624     check_func_headers iconv.h iconv || check_lib iconv iconv.h iconv -liconv
6625 fi
6626
6627 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6628
6629 # add some useful compiler flags if supported
6630 check_cflags -Wdeclaration-after-statement
6631 check_cflags -Wall
6632 check_cflags -Wdisabled-optimization
6633 check_cflags -Wpointer-arith
6634 check_cflags -Wredundant-decls
6635 check_cflags -Wwrite-strings
6636 check_cflags -Wtype-limits
6637 check_cflags -Wundef
6638 check_cflags -Wmissing-prototypes
6639 check_cflags -Wno-pointer-to-int-cast
6640 check_cflags -Wstrict-prototypes
6641 check_cflags -Wempty-body
6642
6643 if enabled extra_warnings; then
6644     check_cflags -Wcast-qual
6645     check_cflags -Wextra
6646     check_cflags -Wpedantic
6647 fi
6648
6649 check_disable_warning(){
6650     warning_flag=-W${1#-Wno-}
6651     test_cflags $unknown_warning_flags $warning_flag && add_cflags $1
6652 }
6653
6654 test_cflags -Werror=unused-command-line-argument &&
6655     append unknown_warning_flags "-Werror=unused-command-line-argument"
6656 test_cflags -Werror=unknown-warning-option &&
6657     append unknown_warning_flags "-Werror=unknown-warning-option"
6658
6659 check_disable_warning -Wno-parentheses
6660 check_disable_warning -Wno-switch
6661 check_disable_warning -Wno-format-zero-length
6662 check_disable_warning -Wno-pointer-sign
6663 check_disable_warning -Wno-unused-const-variable
6664 check_disable_warning -Wno-bool-operation
6665 check_disable_warning -Wno-char-subscripts
6666
6667 check_disable_warning_headers(){
6668     warning_flag=-W${1#-Wno-}
6669     test_cflags $warning_flag && add_cflags_headers $1
6670 }
6671
6672 check_disable_warning_headers -Wno-deprecated-declarations
6673 check_disable_warning_headers -Wno-unused-variable
6674
6675 test_cc <<EOF && enable blocks_extension
6676 void (^block)(void);
6677 EOF
6678
6679 # add some linker flags
6680 check_ldflags -Wl,--warn-common
6681 check_ldflags -Wl,-rpath-link=:libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6682 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir && add_ldsoflags -Wl,-rpath,$libdir
6683 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6684
6685 # add some strip flags
6686 check_stripflags -x
6687
6688 enabled neon_clobber_test &&
6689     check_ldflags -Wl,--wrap,avcodec_open2              \
6690                   -Wl,--wrap,avcodec_decode_audio4      \
6691                   -Wl,--wrap,avcodec_decode_video2      \
6692                   -Wl,--wrap,avcodec_decode_subtitle2   \
6693                   -Wl,--wrap,avcodec_encode_audio2      \
6694                   -Wl,--wrap,avcodec_encode_video2      \
6695                   -Wl,--wrap,avcodec_encode_subtitle    \
6696                   -Wl,--wrap,avcodec_send_packet        \
6697                   -Wl,--wrap,avcodec_receive_packet     \
6698                   -Wl,--wrap,avcodec_send_frame         \
6699                   -Wl,--wrap,avcodec_receive_frame      \
6700                   -Wl,--wrap,swr_convert                \
6701                   -Wl,--wrap,avresample_convert ||
6702     disable neon_clobber_test
6703
6704 enabled xmm_clobber_test &&
6705     check_ldflags -Wl,--wrap,avcodec_open2              \
6706                   -Wl,--wrap,avcodec_decode_audio4      \
6707                   -Wl,--wrap,avcodec_decode_video2      \
6708                   -Wl,--wrap,avcodec_decode_subtitle2   \
6709                   -Wl,--wrap,avcodec_encode_audio2      \
6710                   -Wl,--wrap,avcodec_encode_video2      \
6711                   -Wl,--wrap,avcodec_encode_subtitle    \
6712                   -Wl,--wrap,avcodec_send_packet        \
6713                   -Wl,--wrap,avcodec_receive_packet     \
6714                   -Wl,--wrap,avcodec_send_frame         \
6715                   -Wl,--wrap,avcodec_receive_frame      \
6716                   -Wl,--wrap,swr_convert                \
6717                   -Wl,--wrap,avresample_convert         \
6718                   -Wl,--wrap,sws_scale ||
6719     disable xmm_clobber_test
6720
6721 check_ld "cc" proper_dce <<EOF
6722 extern const int array[512];
6723 static inline int func(void) { return array[0]; }
6724 int main(void) { return 0; }
6725 EOF
6726
6727 if enabled proper_dce; then
6728     echo "X { local: *; };" > $TMPV
6729     if test_ldflags -Wl,${version_script},$TMPV; then
6730         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6731         quotes='""'
6732         test_cc <<EOF && enable symver_asm_label
6733 void ff_foo(void) __asm__ ("av_foo@VERSION");
6734 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6735 EOF
6736         test_cc <<EOF && enable symver_gnu_asm
6737 __asm__(".symver ff_foo,av_foo@VERSION");
6738 void ff_foo(void) {}
6739 EOF
6740     fi
6741 fi
6742
6743 if [ -z "$optflags" ]; then
6744     if enabled small; then
6745         optflags=$cflags_size
6746     elif enabled optimizations; then
6747         optflags=$cflags_speed
6748     else
6749         optflags=$cflags_noopt
6750     fi
6751 fi
6752
6753 check_optflags(){
6754     check_cflags "$@"
6755     enabled lto && check_ldflags "$@"
6756 }
6757
6758 check_optflags $optflags
6759 check_optflags -fno-math-errno
6760 check_optflags -fno-signed-zeros
6761
6762 if enabled lto; then
6763     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6764     check_cflags  -flto
6765     check_ldflags -flto $cpuflags
6766     disable inline_asm_direct_symbol_refs
6767 fi
6768
6769 enabled ftrapv && check_cflags -ftrapv
6770
6771 test_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6772 int x;
6773 EOF
6774
6775
6776 if enabled icc; then
6777     # Just warnings, no remarks
6778     check_cflags -w1
6779     # -wd: Disable following warnings
6780     # 144, 167, 556: -Wno-pointer-sign
6781     # 188: enumerated type mixed with another type
6782     # 1292: attribute "foo" ignored
6783     # 1419: external declaration in primary source file
6784     # 10006: ignoring unknown option -fno-signed-zeros
6785     # 10148: ignoring unknown option -Wno-parentheses
6786     # 10156: ignoring option '-W'; no argument required
6787     # 13200: No EMMS instruction before call to function
6788     # 13203: No EMMS instruction before return from function
6789     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6790     # 11030: Warning unknown option --as-needed
6791     # 10156: ignoring option '-export'; no argument required
6792     check_ldflags -wd10156,11030
6793     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6794     enable ebp_available
6795     # The test above does not test linking
6796     enabled lto && disable symver_asm_label
6797     if enabled x86_32; then
6798         icc_version=$($cc -dumpversion)
6799         test ${icc_version%%.*} -ge 11 &&
6800             check_cflags -falign-stack=maintain-16-byte ||
6801             disable aligned_stack
6802     fi
6803 elif enabled gcc; then
6804     check_optflags -fno-tree-vectorize
6805     check_cflags -Werror=format-security
6806     check_cflags -Werror=implicit-function-declaration
6807     check_cflags -Werror=missing-prototypes
6808     check_cflags -Werror=return-type
6809     check_cflags -Werror=vla
6810     check_cflags -Wformat
6811     check_cflags -fdiagnostics-color=auto
6812     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6813     if enabled x86_32; then
6814         case $target_os in
6815         *bsd*)
6816             # BSDs don't guarantee a 16 byte aligned stack, but we can
6817             # request GCC to try to maintain 16 byte alignment throughout
6818             # function calls. Library entry points that might call assembly
6819             # functions align the stack. (The parameter means 2^4 bytes.)
6820             check_cflags -mpreferred-stack-boundary=4
6821             ;;
6822         esac
6823     fi
6824 elif enabled llvm_gcc; then
6825     check_cflags -mllvm -stack-alignment=16
6826 elif enabled clang; then
6827     if enabled x86_32; then
6828         # Clang doesn't support maintaining alignment without assuming the
6829         # same alignment in every function. If 16 byte alignment would be
6830         # enabled, one would also have to either add attribute_align_arg on
6831         # every single entry point into the libraries or enable -mstackrealign
6832         # (doing stack realignment in every single function).
6833         case $target_os in
6834         mingw32|win32|*bsd*)
6835             disable aligned_stack
6836             ;;
6837         *)
6838             check_cflags -mllvm -stack-alignment=16
6839             check_cflags -mstack-alignment=16
6840             ;;
6841         esac
6842     else
6843         check_cflags -mllvm -stack-alignment=16
6844         check_cflags -mstack-alignment=16
6845     fi
6846     check_cflags -Qunused-arguments
6847     check_cflags -Werror=implicit-function-declaration
6848     check_cflags -Werror=missing-prototypes
6849     check_cflags -Werror=return-type
6850 elif enabled cparser; then
6851     add_cflags -Wno-missing-variable-declarations
6852     add_cflags -Wno-empty-statement
6853 elif enabled armcc; then
6854     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6855     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6856     # 2523: use of inline assembly is deprecated
6857     add_cflags -W${armcc_opt},--diag_suppress=2523
6858     add_cflags -W${armcc_opt},--diag_suppress=1207
6859     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6860     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6861     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6862     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6863 elif enabled pathscale; then
6864     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6865     disable inline_asm
6866 elif enabled_any msvc icl; then
6867     enabled x86_32 && disable aligned_stack
6868     enabled_all x86_32 debug && add_cflags -Oy-
6869     enabled debug && add_ldflags -debug
6870     enable pragma_deprecated
6871     if enabled icl; then
6872         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6873         # (correctly) on icl 13.x.
6874         test_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6875             add_cflags -Qansi-alias
6876         # Some inline asm is not compilable in debug
6877         if enabled debug; then
6878             disable ebp_available
6879             disable ebx_available
6880         fi
6881     fi
6882     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6883     check_cpp_condition log2 crtversion.h "_VC_CRT_MAJOR_VERSION >= 12"
6884     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6885     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6886     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6887     # MSVC 2013 and newer can handle it fine.
6888     # If this declspec fails, force including stdlib.h before the restrict redefinition
6889     # happens in config.h.
6890     if [ $restrict_keyword != restrict ]; then
6891         test_cc <<EOF || add_cflags -FIstdlib.h
6892 __declspec($restrict_keyword) void *foo(int);
6893 EOF
6894     fi
6895     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6896     # Issue has been fixed in MSVC v19.00.24218.
6897     test_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6898         check_cflags -d2SSAOptimizer-
6899     # enable utf-8 source processing on VS2015 U2 and newer
6900     test_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6901         add_cflags -utf-8
6902 fi
6903
6904 for pfx in "" host_; do
6905     varname=${pfx%_}cc_type
6906     eval "type=\$$varname"
6907     if [ "$type" = "msvc" ]; then
6908         test_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6909 static inline int foo(int a) { return a; }
6910 EOF
6911     fi
6912 done
6913
6914 case $as_type in
6915     clang)
6916         add_asflags -Qunused-arguments
6917     ;;
6918 esac
6919
6920 case $ld_type in
6921     clang)
6922         check_ldflags -Qunused-arguments
6923     ;;
6924 esac
6925
6926 enable frame_thread_encoder
6927
6928 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6929
6930 check_deps $CONFIG_LIST       \
6931            $CONFIG_EXTRA      \
6932            $HAVE_LIST         \
6933            $ALL_COMPONENTS    \
6934
6935 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"
6936 enabled avresample && warn "Building with deprecated library libavresample"
6937
6938 case $target_os in
6939 haiku)
6940     disable memalign
6941     disable posix_memalign
6942     ;;
6943 *-dos|freedos|opendos)
6944     if test_cpp_condition sys/version.h "defined(__DJGPP__) && __DJGPP__ == 2 && __DJGPP_MINOR__ == 5"; then
6945         disable memalign
6946     fi
6947     ;;
6948 esac
6949
6950 flatten_extralibs(){
6951     nested_entries=
6952     list_name=$1
6953     eval list=\$${1}
6954     for entry in $list; do
6955         entry_copy=$entry
6956         resolve entry_copy
6957         flat_entries=
6958         for e in $entry_copy; do
6959             case $e in
6960                 *_extralibs) nested_entries="$nested_entries$e ";;
6961                           *) flat_entries="$flat_entries$e ";;
6962             esac
6963         done
6964         eval $entry="\$flat_entries"
6965     done
6966     append $list_name "$nested_entries"
6967
6968     resolve nested_entries
6969     if test -n "$(filter '*_extralibs' $nested_entries)"; then
6970         flatten_extralibs $list_name
6971     fi
6972 }
6973
6974 flatten_extralibs_wrapper(){
6975     list_name=$1
6976     flatten_extralibs $list_name
6977     unique $list_name
6978     resolve $list_name
6979     eval $list_name=\$\(\$ldflags_filter \$$list_name\)
6980     eval printf \''%s'\' \""\$$list_name"\"
6981 }
6982
6983 for linkunit in $LIBRARY_LIST; do
6984     unset current_extralibs
6985     eval components=\$$(toupper ${linkunit})_COMPONENTS_LIST
6986     for comp in ${components}; do
6987         enabled $comp || continue
6988         comp_extralibs="${comp}_extralibs"
6989         append current_extralibs $comp_extralibs
6990     done
6991     eval prepend ${linkunit}_extralibs $current_extralibs
6992 done
6993
6994 for linkunit in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
6995     eval ${linkunit}_extralibs=\$\(flatten_extralibs_wrapper ${linkunit}_extralibs\)
6996 done
6997
6998 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6999
7000 for thread in $THREADS_LIST; do
7001     if enabled $thread; then
7002         test -n "$thread_type" &&
7003             die "ERROR: Only one thread type must be selected." ||
7004             thread_type="$thread"
7005     fi
7006 done
7007
7008 if disabled stdatomic; then
7009     if enabled atomics_gcc; then
7010         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
7011     elif enabled atomics_win32; then
7012         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
7013     elif enabled atomics_suncc; then
7014         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
7015     elif enabled pthreads; then
7016         add_compat atomics/pthread/stdatomic.o
7017         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
7018     else
7019         enabled threads && die "Threading is enabled, but no atomics are available"
7020         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
7021     fi
7022 fi
7023
7024 # Check if requested libraries were found.
7025 for lib in $AUTODETECT_LIBS; do
7026     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
7027 done
7028
7029 enabled zlib && add_cppflags -DZLIB_CONST
7030
7031 # conditional library dependencies, in any order
7032 enabled afftdn_filter       && prepend avfilter_deps "avcodec"
7033 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
7034 enabled afir_filter         && prepend avfilter_deps "avcodec"
7035 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
7036 enabled aresample_filter    && prepend avfilter_deps "swresample"
7037 enabled atempo_filter       && prepend avfilter_deps "avcodec"
7038 enabled bm3d_filter         && prepend avfilter_deps "avcodec"
7039 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
7040 enabled convolve_filter     && prepend avfilter_deps "avcodec"
7041 enabled deconvolve_filter   && prepend avfilter_deps "avcodec"
7042 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
7043 enabled elbg_filter         && prepend avfilter_deps "avcodec"
7044 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
7045 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
7046 enabled firequalizer_filter && prepend avfilter_deps "avcodec"
7047 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
7048 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
7049 enabled pan_filter          && prepend avfilter_deps "swresample"
7050 enabled pp_filter           && prepend avfilter_deps "postproc"
7051 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
7052 enabled resample_filter && prepend avfilter_deps "avresample"
7053 enabled sab_filter          && prepend avfilter_deps "swscale"
7054 enabled scale_filter    && prepend avfilter_deps "swscale"
7055 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
7056 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
7057 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
7058 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
7059 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
7060 enabled signature_filter    && prepend avfilter_deps "avcodec avformat"
7061 enabled smartblur_filter    && prepend avfilter_deps "swscale"
7062 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
7063 enabled spp_filter          && prepend avfilter_deps "avcodec"
7064 enabled sr_filter           && prepend avfilter_deps "avformat swscale"
7065 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
7066 enabled uspp_filter         && prepend avfilter_deps "avcodec"
7067 enabled zoompan_filter      && prepend avfilter_deps "swscale"
7068
7069 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
7070
7071 #FIXME
7072 enabled_any sdl2_outdev opengl_outdev && enabled sdl2 &&
7073     add_cflags $(filter_out '-Dmain=SDL_main' $sdl2_cflags)
7074
7075 enabled opus_decoder    && prepend avcodec_deps "swresample"
7076
7077 # reorder the items at var $1 to align with the items order at var $2 .
7078 # die if an item at $1 is not at $2 .
7079 reorder_by(){
7080     eval rb_in=\$$1
7081     eval rb_ordered=\$$2
7082
7083     for rb in $rb_in; do
7084         is_in $rb $rb_ordered || die "$rb at \$$1 is not at \$$2"
7085     done
7086
7087     rb_out=
7088     for rb in $rb_ordered; do
7089         is_in $rb $rb_in && rb_out="$rb_out$rb "
7090     done
7091     eval $1=\$rb_out
7092 }
7093
7094 # deps-expand fflib $1:  N x {append all expanded deps; unique}
7095 # within a set of N items, N expansions are enough to expose a cycle.
7096 expand_deps(){
7097     unique ${1}_deps  # required for the early break test.
7098     for dummy in $LIBRARY_LIST; do  # N iteratios
7099         eval deps=\$${1}_deps
7100         append ${1}_deps $(map 'eval echo \$${v}_deps' $deps)
7101         unique ${1}_deps
7102         eval '[ ${#deps} = ${#'${1}_deps'} ]' && break  # doesn't expand anymore
7103     done
7104
7105     eval is_in $1 \$${1}_deps && die "Dependency cycle at ${1}_deps"
7106     reorder_by ${1}_deps LIBRARY_LIST  # linking order is expected later
7107 }
7108
7109 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
7110 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
7111
7112 map 'expand_deps $v' $LIBRARY_LIST
7113
7114 if test "$quiet" != "yes"; then
7115
7116 echo "install prefix            $prefix"
7117 echo "source path               $source_path"
7118 echo "C compiler                $cc"
7119 echo "C library                 $libc_type"
7120 if test "$host_cc" != "$cc"; then
7121     echo "host C compiler           $host_cc"
7122     echo "host C library            $host_libc_type"
7123 fi
7124 echo "ARCH                      $arch ($cpu)"
7125 if test "$build_suffix" != ""; then
7126     echo "build suffix              $build_suffix"
7127 fi
7128 if test "$progs_suffix" != ""; then
7129     echo "progs suffix              $progs_suffix"
7130 fi
7131 if test "$extra_version" != ""; then
7132     echo "version string suffix     $extra_version"
7133 fi
7134 echo "big-endian                ${bigendian-no}"
7135 echo "runtime cpu detection     ${runtime_cpudetect-no}"
7136 if enabled x86; then
7137     echo "standalone assembly       ${x86asm-no}"
7138     echo "x86 assembler             ${x86asmexe}"
7139     echo "MMX enabled               ${mmx-no}"
7140     echo "MMXEXT enabled            ${mmxext-no}"
7141     echo "3DNow! enabled            ${amd3dnow-no}"
7142     echo "3DNow! extended enabled   ${amd3dnowext-no}"
7143     echo "SSE enabled               ${sse-no}"
7144     echo "SSSE3 enabled             ${ssse3-no}"
7145     echo "AESNI enabled             ${aesni-no}"
7146     echo "AVX enabled               ${avx-no}"
7147     echo "AVX2 enabled              ${avx2-no}"
7148     echo "AVX-512 enabled           ${avx512-no}"
7149     echo "XOP enabled               ${xop-no}"
7150     echo "FMA3 enabled              ${fma3-no}"
7151     echo "FMA4 enabled              ${fma4-no}"
7152     echo "i686 features enabled     ${i686-no}"
7153     echo "CMOV is fast              ${fast_cmov-no}"
7154     echo "EBX available             ${ebx_available-no}"
7155     echo "EBP available             ${ebp_available-no}"
7156 fi
7157 if enabled aarch64; then
7158     echo "NEON enabled              ${neon-no}"
7159     echo "VFP enabled               ${vfp-no}"
7160 fi
7161 if enabled arm; then
7162     echo "ARMv5TE enabled           ${armv5te-no}"
7163     echo "ARMv6 enabled             ${armv6-no}"
7164     echo "ARMv6T2 enabled           ${armv6t2-no}"
7165     echo "VFP enabled               ${vfp-no}"
7166     echo "NEON enabled              ${neon-no}"
7167     echo "THUMB enabled             ${thumb-no}"
7168 fi
7169 if enabled mips; then
7170     echo "MIPS FPU enabled          ${mipsfpu-no}"
7171     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
7172     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
7173     echo "MIPS MSA enabled          ${msa-no}"
7174     echo "MIPS MSA2 enabled         ${msa2-no}"
7175     echo "LOONGSON MMI enabled      ${mmi-no}"
7176 fi
7177 if enabled ppc; then
7178     echo "AltiVec enabled           ${altivec-no}"
7179     echo "VSX enabled               ${vsx-no}"
7180     echo "POWER8 enabled            ${power8-no}"
7181     echo "PPC 4xx optimizations     ${ppc4xx-no}"
7182     echo "dcbzl available           ${dcbzl-no}"
7183 fi
7184 echo "debug symbols             ${debug-no}"
7185 echo "strip symbols             ${stripping-no}"
7186 echo "optimize for size         ${small-no}"
7187 echo "optimizations             ${optimizations-no}"
7188 echo "static                    ${static-no}"
7189 echo "shared                    ${shared-no}"
7190 echo "postprocessing support    ${postproc-no}"
7191 echo "network support           ${network-no}"
7192 echo "threading support         ${thread_type-no}"
7193 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
7194 echo "texi2html enabled         ${texi2html-no}"
7195 echo "perl enabled              ${perl-no}"
7196 echo "pod2man enabled           ${pod2man-no}"
7197 echo "makeinfo enabled          ${makeinfo-no}"
7198 echo "makeinfo supports HTML    ${makeinfo_html-no}"
7199 test -n "$random_seed" &&
7200     echo "random seed               ${random_seed}"
7201 echo
7202
7203 echo "External libraries:"
7204 print_enabled '' $EXTERNAL_LIBRARY_LIST $EXTERNAL_AUTODETECT_LIBRARY_LIST | print_in_columns
7205 echo
7206
7207 echo "External libraries providing hardware acceleration:"
7208 print_enabled '' $HWACCEL_LIBRARY_LIST $HWACCEL_AUTODETECT_LIBRARY_LIST | print_in_columns
7209 echo
7210
7211 echo "Libraries:"
7212 print_enabled '' $LIBRARY_LIST | print_in_columns
7213 echo
7214
7215 echo "Programs:"
7216 print_enabled '' $PROGRAM_LIST | print_in_columns
7217 echo
7218
7219 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
7220     echo "Enabled ${type}s:"
7221     eval list=\$$(toupper $type)_LIST
7222     print_enabled '_*' $list | print_in_columns
7223     echo
7224 done
7225
7226 if test -n "$ignore_tests"; then
7227     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
7228     echo "Ignored FATE tests:"
7229     echo $ignore_tests | print_in_columns
7230     echo
7231 fi
7232
7233 echo "License: $license"
7234
7235 fi # test "$quiet" != "yes"
7236
7237 if test -n "$WARN_IF_GETS_DISABLED_LIST"; then
7238     for cfg in $WARN_IF_GETS_DISABLED_LIST; do
7239         if disabled $cfg; then
7240             varname=${cfg}_disable_reason
7241             eval "warn \"Disabled $cfg because \$$varname\""
7242         fi
7243     done
7244 fi
7245
7246 if test -n "$WARNINGS"; then
7247     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
7248     enabled fatal_warnings && exit 1
7249 fi
7250
7251 test -e Makefile || echo "include $source_path/Makefile" > Makefile
7252
7253 esc(){
7254     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
7255 }
7256
7257 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" > ffbuild/config.fate
7258
7259 enabled stripping || strip="echo skipping strip"
7260 enabled stripping || striptype=""
7261
7262 config_files="$TMPH ffbuild/config.mak doc/config.texi"
7263
7264 cat > ffbuild/config.mak <<EOF
7265 # Automatically generated by configure - do not modify!
7266 ifndef FFMPEG_CONFIG_MAK
7267 FFMPEG_CONFIG_MAK=1
7268 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
7269 prefix=$prefix
7270 LIBDIR=\$(DESTDIR)$libdir
7271 SHLIBDIR=\$(DESTDIR)$shlibdir
7272 INCDIR=\$(DESTDIR)$incdir
7273 BINDIR=\$(DESTDIR)$bindir
7274 DATADIR=\$(DESTDIR)$datadir
7275 DOCDIR=\$(DESTDIR)$docdir
7276 MANDIR=\$(DESTDIR)$mandir
7277 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
7278 INSTALL_NAME_DIR=$install_name_dir
7279 SRC_PATH=$source_path
7280 SRC_LINK=$source_link
7281 ifndef MAIN_MAKEFILE
7282 SRC_PATH:=\$(SRC_PATH:.%=..%)
7283 endif
7284 CC_IDENT=$cc_ident
7285 ARCH=$arch
7286 INTRINSICS=$intrinsics
7287 EXTERN_PREFIX=$extern_prefix
7288 CC=$cc
7289 CXX=$cxx
7290 AS=$as
7291 OBJCC=$objcc
7292 LD=$ld
7293 DEPCC=$dep_cc
7294 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
7295 DEPAS=$as
7296 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
7297 X86ASM=$x86asmexe
7298 DEPX86ASM=$x86asmexe
7299 DEPX86ASMFLAGS=\$(X86ASMFLAGS)
7300 AR=$ar
7301 ARFLAGS=$arflags
7302 AR_O=$ar_o
7303 AR_CMD=$ar
7304 NM_CMD=$nm
7305 RANLIB=$ranlib
7306 STRIP=$strip
7307 STRIPTYPE=$striptype
7308 NVCC=$nvcc
7309 CP=cp -p
7310 LN_S=$ln_s
7311 CPPFLAGS=$CPPFLAGS
7312 CFLAGS=$CFLAGS
7313 CXXFLAGS=$CXXFLAGS
7314 OBJCFLAGS=$OBJCFLAGS
7315 ASFLAGS=$ASFLAGS
7316 NVCCFLAGS=$nvccflags
7317 AS_C=$AS_C
7318 AS_O=$AS_O
7319 OBJCC_C=$OBJCC_C
7320 OBJCC_E=$OBJCC_E
7321 OBJCC_O=$OBJCC_O
7322 CC_C=$CC_C
7323 CC_E=$CC_E
7324 CC_O=$CC_O
7325 CXX_C=$CXX_C
7326 CXX_O=$CXX_O
7327 NVCC_C=$NVCC_C
7328 NVCC_O=$NVCC_O
7329 LD_O=$LD_O
7330 X86ASM_O=$X86ASM_O
7331 LD_LIB=$LD_LIB
7332 LD_PATH=$LD_PATH
7333 DLLTOOL=$dlltool
7334 WINDRES=$windres
7335 DEPWINDRES=$dep_cc
7336 DOXYGEN=$doxygen
7337 LDFLAGS=$LDFLAGS
7338 LDEXEFLAGS=$LDEXEFLAGS
7339 LDSOFLAGS=$LDSOFLAGS
7340 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
7341 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
7342 X86ASMFLAGS=$X86ASMFLAGS
7343 BUILDSUF=$build_suffix
7344 PROGSSUF=$progs_suffix
7345 FULLNAME=$FULLNAME
7346 LIBPREF=$LIBPREF
7347 LIBSUF=$LIBSUF
7348 LIBNAME=$LIBNAME
7349 SLIBPREF=$SLIBPREF
7350 SLIBSUF=$SLIBSUF
7351 EXESUF=$EXESUF
7352 EXTRA_VERSION=$extra_version
7353 CCDEP=$CCDEP
7354 CXXDEP=$CXXDEP
7355 CCDEP_FLAGS=$CCDEP_FLAGS
7356 ASDEP=$ASDEP
7357 ASDEP_FLAGS=$ASDEP_FLAGS
7358 X86ASMDEP=$X86ASMDEP
7359 X86ASMDEP_FLAGS=$X86ASMDEP_FLAGS
7360 CC_DEPFLAGS=$CC_DEPFLAGS
7361 AS_DEPFLAGS=$AS_DEPFLAGS
7362 X86ASM_DEPFLAGS=$X86ASM_DEPFLAGS
7363 HOSTCC=$host_cc
7364 HOSTLD=$host_ld
7365 HOSTCFLAGS=$host_cflags
7366 HOSTCPPFLAGS=$host_cppflags
7367 HOSTEXESUF=$HOSTEXESUF
7368 HOSTLDFLAGS=$host_ldflags
7369 HOSTEXTRALIBS=$host_extralibs
7370 DEPHOSTCC=$host_cc
7371 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
7372 HOSTCCDEP=$HOSTCCDEP
7373 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
7374 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
7375 HOSTCC_C=$HOSTCC_C
7376 HOSTCC_O=$HOSTCC_O
7377 HOSTLD_O=$HOSTLD_O
7378 TARGET_EXEC=$target_exec $target_exec_args
7379 TARGET_PATH=$target_path
7380 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
7381 CFLAGS-ffplay=${sdl2_cflags}
7382 CFLAGS_HEADERS=$CFLAGS_HEADERS
7383 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
7384 EXTRALIBS=$extralibs
7385 COMPAT_OBJS=$compat_objs
7386 INSTALL=$install
7387 LIBTARGET=${LIBTARGET}
7388 SLIBNAME=${SLIBNAME}
7389 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
7390 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
7391 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
7392 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
7393 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
7394 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
7395 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
7396 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
7397 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
7398 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
7399 NOREDZONE_FLAGS=$noredzone_flags
7400 LIBFUZZER_PATH=$libfuzzer_path
7401 IGNORE_TESTS=$ignore_tests
7402 EOF
7403
7404 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> ffbuild/config.mak' $LIBRARY_LIST
7405
7406 for entry in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
7407     eval echo "EXTRALIBS-${entry}=\$${entry}_extralibs" >> ffbuild/config.mak
7408 done
7409
7410 cat > $TMPH <<EOF
7411 /* Automatically generated by configure - do not modify! */
7412 #ifndef FFMPEG_CONFIG_H
7413 #define FFMPEG_CONFIG_H
7414 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
7415 #define FFMPEG_LICENSE "$(c_escape $license)"
7416 #define CONFIG_THIS_YEAR 2019
7417 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
7418 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
7419 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
7420 #define av_restrict $restrict_keyword
7421 #define EXTERN_PREFIX "${extern_prefix}"
7422 #define EXTERN_ASM ${extern_prefix}
7423 #define BUILDSUF "$build_suffix"
7424 #define SLIBSUF "$SLIBSUF"
7425 #define HAVE_MMX2 HAVE_MMXEXT
7426 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
7427 EOF
7428
7429 test -n "$assert_level" &&
7430     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
7431
7432 test -n "$malloc_prefix" &&
7433     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
7434
7435 if enabled x86asm; then
7436     append config_files $TMPASM
7437     cat > $TMPASM <<EOF
7438 ; Automatically generated by configure - do not modify!
7439 EOF
7440 fi
7441
7442 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
7443
7444
7445 mkdir -p doc
7446 mkdir -p tests
7447 mkdir -p tests/api
7448 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
7449
7450 print_config ARCH_   "$config_files" $ARCH_LIST
7451 print_config HAVE_   "$config_files" $HAVE_LIST
7452 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
7453                                      $CONFIG_EXTRA      \
7454                                      $ALL_COMPONENTS    \
7455
7456 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
7457 echo "endif # FFMPEG_CONFIG_MAK" >> ffbuild/config.mak
7458
7459 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
7460 cp_if_changed $TMPH config.h
7461 touch ffbuild/.config
7462
7463 enabled x86asm && cp_if_changed $TMPASM config.asm
7464
7465 cat > $TMPH <<EOF
7466 /* Generated by ffmpeg configure */
7467 #ifndef AVUTIL_AVCONFIG_H
7468 #define AVUTIL_AVCONFIG_H
7469 EOF
7470
7471 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
7472
7473 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
7474
7475 cp_if_changed $TMPH libavutil/avconfig.h
7476
7477 # full_filter_name_foo=vf_foo
7478 # full_filter_name_bar=asrc_bar
7479 # ...
7480 eval "$(sed -n "s/^extern AVFilter ff_\([avfsinkrc]\{2,5\}\)_\(.*\);/full_filter_name_\2=\1_\2/p" $source_path/libavfilter/allfilters.c)"
7481
7482 # generate the lists of enabled components
7483 print_enabled_components(){
7484     file=$1
7485     struct_name=$2
7486     name=$3
7487     shift 3
7488     echo "static const $struct_name * const $name[] = {" > $TMPH
7489     for c in $*; do
7490         if enabled $c; then
7491             case $name in
7492                 filter_list)
7493                     eval c=\$full_filter_name_${c%_filter}
7494                 ;;
7495                 indev_list)
7496                     c=${c%_indev}_demuxer
7497                 ;;
7498                 outdev_list)
7499                     c=${c%_outdev}_muxer
7500                 ;;
7501             esac
7502             printf "    &ff_%s,\n" $c >> $TMPH
7503         fi
7504     done
7505     if [ "$name" = "filter_list" ]; then
7506         for c in asrc_abuffer vsrc_buffer asink_abuffer vsink_buffer; do
7507             printf "    &ff_%s,\n" $c >> $TMPH
7508         done
7509     fi
7510     echo "    NULL };" >> $TMPH
7511     cp_if_changed $TMPH $file
7512 }
7513
7514 print_enabled_components libavfilter/filter_list.c AVFilter filter_list $FILTER_LIST
7515 print_enabled_components libavcodec/codec_list.c AVCodec codec_list $CODEC_LIST
7516 print_enabled_components libavcodec/parser_list.c AVCodecParser parser_list $PARSER_LIST
7517 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
7518 print_enabled_components libavformat/demuxer_list.c AVInputFormat demuxer_list $DEMUXER_LIST
7519 print_enabled_components libavformat/muxer_list.c AVOutputFormat muxer_list $MUXER_LIST
7520 print_enabled_components libavdevice/indev_list.c AVInputFormat indev_list $INDEV_LIST
7521 print_enabled_components libavdevice/outdev_list.c AVOutputFormat outdev_list $OUTDEV_LIST
7522 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
7523
7524 # Settings for pkg-config files
7525
7526 cat > $TMPH <<EOF
7527 # Automatically generated by configure - do not modify!
7528 shared=$shared
7529 build_suffix=$build_suffix
7530 prefix=$prefix
7531 libdir=$libdir
7532 incdir=$incdir
7533 rpath=$(enabled rpath && echo "-Wl,-rpath,\${libdir}")
7534 source_path=${source_path}
7535 LIBPREF=${LIBPREF}
7536 LIBSUF=${LIBSUF}
7537 extralibs_avutil="$avutil_extralibs"
7538 extralibs_avcodec="$avcodec_extralibs"
7539 extralibs_avformat="$avformat_extralibs"
7540 extralibs_avdevice="$avdevice_extralibs"
7541 extralibs_avfilter="$avfilter_extralibs"
7542 extralibs_avresample="$avresample_extralibs"
7543 extralibs_postproc="$postproc_extralibs"
7544 extralibs_swscale="$swscale_extralibs"
7545 extralibs_swresample="$swresample_extralibs"
7546 EOF
7547
7548 for lib in $LIBRARY_LIST; do
7549     lib_deps="$(eval echo \$${lib}_deps)"
7550     echo ${lib}_deps=\"$lib_deps\" >> $TMPH
7551 done
7552
7553 cp_if_changed $TMPH ffbuild/config.sh