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 indeo3_decoder_select="hpeldsp"
2727 indeo4_decoder_select="ividsp"
2728 indeo5_decoder_select="ividsp"
2729 interplay_video_decoder_select="hpeldsp"
2730 jpegls_decoder_select="mjpeg_decoder"
2731 jv_decoder_select="blockdsp"
2732 lagarith_decoder_select="llviddsp"
2733 ljpeg_encoder_select="idctdsp jpegtables mpegvideoenc"
2734 lscr_decoder_deps="zlib"
2735 magicyuv_decoder_select="llviddsp"
2736 magicyuv_encoder_select="llvidencdsp"
2737 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2738 metasound_decoder_select="lsp mdct sinewin"
2739 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2740 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2741 mjpeg_encoder_select="jpegtables mpegvideoenc"
2742 mjpegb_decoder_select="mjpeg_decoder"
2743 mlp_decoder_select="mlp_parser"
2744 mlp_encoder_select="lpc audio_frame_queue"
2745 motionpixels_decoder_select="bswapdsp"
2746 mp1_decoder_select="mpegaudio"
2747 mp1float_decoder_select="mpegaudio"
2748 mp2_decoder_select="mpegaudio"
2749 mp2float_decoder_select="mpegaudio"
2750 mp3_decoder_select="mpegaudio"
2751 mp3adu_decoder_select="mpegaudio"
2752 mp3adufloat_decoder_select="mpegaudio"
2753 mp3float_decoder_select="mpegaudio"
2754 mp3on4_decoder_select="mpegaudio"
2755 mp3on4float_decoder_select="mpegaudio"
2756 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2757 mpc8_decoder_select="mpegaudiodsp"
2758 mpegvideo_decoder_select="mpegvideo"
2759 mpeg1video_decoder_select="mpegvideo"
2760 mpeg1video_encoder_select="mpegvideoenc h263dsp"
2761 mpeg2video_decoder_select="mpegvideo"
2762 mpeg2video_encoder_select="mpegvideoenc h263dsp"
2763 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2764 mpeg4_encoder_select="h263_encoder"
2765 msa1_decoder_select="mss34dsp"
2766 mscc_decoder_deps="zlib"
2767 msmpeg4v1_decoder_select="h263_decoder"
2768 msmpeg4v2_decoder_select="h263_decoder"
2769 msmpeg4v2_encoder_select="h263_encoder"
2770 msmpeg4v3_decoder_select="h263_decoder"
2771 msmpeg4v3_encoder_select="h263_encoder"
2772 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2773 mts2_decoder_select="mss34dsp"
2774 mwsc_decoder_deps="zlib"
2775 mxpeg_decoder_select="mjpeg_decoder"
2776 nellymoser_decoder_select="mdct sinewin"
2777 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2778 nuv_decoder_select="idctdsp lzo"
2779 on2avc_decoder_select="mdct"
2780 opus_decoder_deps="swresample"
2781 opus_decoder_select="mdct15"
2782 opus_encoder_select="audio_frame_queue mdct15"
2783 png_decoder_deps="zlib"
2784 png_encoder_deps="zlib"
2785 png_encoder_select="llvidencdsp"
2786 prores_decoder_select="blockdsp idctdsp"
2787 prores_encoder_select="fdctdsp"
2788 qcelp_decoder_select="lsp"
2789 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2790 ra_144_decoder_select="audiodsp"
2791 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2792 ralf_decoder_select="golomb"
2793 rasc_decoder_deps="zlib"
2794 rawvideo_decoder_select="bswapdsp"
2795 rscc_decoder_deps="zlib"
2796 rtjpeg_decoder_select="me_cmp"
2797 rv10_decoder_select="h263_decoder"
2798 rv10_encoder_select="h263_encoder"
2799 rv20_decoder_select="h263_decoder"
2800 rv20_encoder_select="h263_encoder"
2801 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2802 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2803 screenpresso_decoder_deps="zlib"
2804 shorten_decoder_select="bswapdsp"
2805 sipr_decoder_select="lsp"
2806 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2807 snow_encoder_select="dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2808 sonic_decoder_select="golomb rangecoder"
2809 sonic_encoder_select="golomb rangecoder"
2810 sonic_ls_encoder_select="golomb rangecoder"
2811 sp5x_decoder_select="mjpeg_decoder"
2812 speedhq_decoder_select="mpegvideo"
2813 srgc_decoder_deps="zlib"
2814 svq1_decoder_select="hpeldsp"
2815 svq1_encoder_select="hpeldsp me_cmp mpegvideoenc"
2816 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2817 svq3_decoder_suggest="zlib"
2818 tak_decoder_select="audiodsp"
2819 tdsc_decoder_deps="zlib"
2820 tdsc_decoder_select="mjpeg_decoder"
2821 theora_decoder_select="vp3_decoder"
2822 thp_decoder_select="mjpeg_decoder"
2823 tiff_decoder_suggest="zlib lzma"
2824 tiff_encoder_suggest="zlib"
2825 truehd_decoder_select="mlp_parser"
2826 truehd_encoder_select="lpc audio_frame_queue"
2827 truemotion2_decoder_select="bswapdsp"
2828 truespeech_decoder_select="bswapdsp"
2829 tscc_decoder_deps="zlib"
2830 twinvq_decoder_select="mdct lsp sinewin"
2831 txd_decoder_select="texturedsp"
2832 utvideo_decoder_select="bswapdsp llviddsp"
2833 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2834 vble_decoder_select="llviddsp"
2835 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2836 vc1image_decoder_select="vc1_decoder"
2837 vorbis_decoder_select="mdct"
2838 vorbis_encoder_select="audio_frame_queue mdct"
2839 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2840 vp4_decoder_select="vp3_decoder"
2841 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2842 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2843 vp6a_decoder_select="vp6_decoder"
2844 vp6f_decoder_select="vp6_decoder"
2845 vp7_decoder_select="h264pred videodsp vp8dsp"
2846 vp8_decoder_select="h264pred videodsp vp8dsp"
2847 vp9_decoder_select="videodsp vp9_parser vp9_superframe_split_bsf"
2848 wcmv_decoder_deps="zlib"
2849 webp_decoder_select="vp8_decoder exif"
2850 wmalossless_decoder_select="llauddsp"
2851 wmapro_decoder_select="mdct sinewin wma_freqs"
2852 wmav1_decoder_select="mdct sinewin wma_freqs"
2853 wmav1_encoder_select="mdct sinewin wma_freqs"
2854 wmav2_decoder_select="mdct sinewin wma_freqs"
2855 wmav2_encoder_select="mdct sinewin wma_freqs"
2856 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2857 wmv1_decoder_select="h263_decoder"
2858 wmv1_encoder_select="h263_encoder"
2859 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2860 wmv2_encoder_select="h263_encoder wmv2dsp"
2861 wmv3_decoder_select="vc1_decoder"
2862 wmv3image_decoder_select="wmv3_decoder"
2863 xma1_decoder_select="wmapro_decoder"
2864 xma2_decoder_select="wmapro_decoder"
2865 zerocodec_decoder_deps="zlib"
2866 zlib_decoder_deps="zlib"
2867 zlib_encoder_deps="zlib"
2868 zmbv_decoder_deps="zlib"
2869 zmbv_encoder_deps="zlib"
2870
2871 # hardware accelerators
2872 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2873 cuda_deps="ffnvcodec"
2874 cuvid_deps="ffnvcodec"
2875 d3d11va_deps="dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2876 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32 user32"
2877 ffnvcodec_deps_any="libdl LoadLibrary"
2878 nvdec_deps="ffnvcodec"
2879 vaapi_x11_deps="xlib"
2880 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2881 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2882 xvmc_deps="X11_extensions_XvMClib_h"
2883
2884 h263_vaapi_hwaccel_deps="vaapi"
2885 h263_vaapi_hwaccel_select="h263_decoder"
2886 h263_videotoolbox_hwaccel_deps="videotoolbox"
2887 h263_videotoolbox_hwaccel_select="h263_decoder"
2888 h264_d3d11va_hwaccel_deps="d3d11va"
2889 h264_d3d11va_hwaccel_select="h264_decoder"
2890 h264_d3d11va2_hwaccel_deps="d3d11va"
2891 h264_d3d11va2_hwaccel_select="h264_decoder"
2892 h264_dxva2_hwaccel_deps="dxva2"
2893 h264_dxva2_hwaccel_select="h264_decoder"
2894 h264_nvdec_hwaccel_deps="nvdec"
2895 h264_nvdec_hwaccel_select="h264_decoder"
2896 h264_vaapi_hwaccel_deps="vaapi"
2897 h264_vaapi_hwaccel_select="h264_decoder"
2898 h264_vdpau_hwaccel_deps="vdpau"
2899 h264_vdpau_hwaccel_select="h264_decoder"
2900 h264_videotoolbox_hwaccel_deps="videotoolbox"
2901 h264_videotoolbox_hwaccel_select="h264_decoder"
2902 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2903 hevc_d3d11va_hwaccel_select="hevc_decoder"
2904 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2905 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2906 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2907 hevc_dxva2_hwaccel_select="hevc_decoder"
2908 hevc_nvdec_hwaccel_deps="nvdec"
2909 hevc_nvdec_hwaccel_select="hevc_decoder"
2910 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2911 hevc_vaapi_hwaccel_select="hevc_decoder"
2912 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2913 hevc_vdpau_hwaccel_select="hevc_decoder"
2914 hevc_videotoolbox_hwaccel_deps="videotoolbox"
2915 hevc_videotoolbox_hwaccel_select="hevc_decoder"
2916 mjpeg_nvdec_hwaccel_deps="nvdec"
2917 mjpeg_nvdec_hwaccel_select="mjpeg_decoder"
2918 mjpeg_vaapi_hwaccel_deps="vaapi"
2919 mjpeg_vaapi_hwaccel_select="mjpeg_decoder"
2920 mpeg_xvmc_hwaccel_deps="xvmc"
2921 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2922 mpeg1_nvdec_hwaccel_deps="nvdec"
2923 mpeg1_nvdec_hwaccel_select="mpeg1video_decoder"
2924 mpeg1_vdpau_hwaccel_deps="vdpau"
2925 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2926 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2927 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2928 mpeg1_xvmc_hwaccel_deps="xvmc"
2929 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2930 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2931 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2932 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2933 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2934 mpeg2_dxva2_hwaccel_deps="dxva2"
2935 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2936 mpeg2_nvdec_hwaccel_deps="nvdec"
2937 mpeg2_nvdec_hwaccel_select="mpeg2video_decoder"
2938 mpeg2_vaapi_hwaccel_deps="vaapi"
2939 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2940 mpeg2_vdpau_hwaccel_deps="vdpau"
2941 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2942 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2943 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2944 mpeg2_xvmc_hwaccel_deps="xvmc"
2945 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2946 mpeg4_nvdec_hwaccel_deps="nvdec"
2947 mpeg4_nvdec_hwaccel_select="mpeg4_decoder"
2948 mpeg4_vaapi_hwaccel_deps="vaapi"
2949 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2950 mpeg4_vdpau_hwaccel_deps="vdpau"
2951 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2952 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2953 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2954 vc1_d3d11va_hwaccel_deps="d3d11va"
2955 vc1_d3d11va_hwaccel_select="vc1_decoder"
2956 vc1_d3d11va2_hwaccel_deps="d3d11va"
2957 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2958 vc1_dxva2_hwaccel_deps="dxva2"
2959 vc1_dxva2_hwaccel_select="vc1_decoder"
2960 vc1_nvdec_hwaccel_deps="nvdec"
2961 vc1_nvdec_hwaccel_select="vc1_decoder"
2962 vc1_vaapi_hwaccel_deps="vaapi"
2963 vc1_vaapi_hwaccel_select="vc1_decoder"
2964 vc1_vdpau_hwaccel_deps="vdpau"
2965 vc1_vdpau_hwaccel_select="vc1_decoder"
2966 vp8_nvdec_hwaccel_deps="nvdec"
2967 vp8_nvdec_hwaccel_select="vp8_decoder"
2968 vp8_vaapi_hwaccel_deps="vaapi"
2969 vp8_vaapi_hwaccel_select="vp8_decoder"
2970 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2971 vp9_d3d11va_hwaccel_select="vp9_decoder"
2972 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2973 vp9_d3d11va2_hwaccel_select="vp9_decoder"
2974 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2975 vp9_dxva2_hwaccel_select="vp9_decoder"
2976 vp9_nvdec_hwaccel_deps="nvdec"
2977 vp9_nvdec_hwaccel_select="vp9_decoder"
2978 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2979 vp9_vaapi_hwaccel_select="vp9_decoder"
2980 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2981 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2982 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2983 wmv3_nvdec_hwaccel_select="vc1_nvdec_hwaccel"
2984 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2985 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2986
2987 # hardware-accelerated codecs
2988 omx_deps="libdl pthreads"
2989 omx_rpi_select="omx"
2990 qsv_deps="libmfx"
2991 qsvdec_select="qsv"
2992 qsvenc_select="qsv"
2993 qsvvpp_select="qsv"
2994 vaapi_encode_deps="vaapi"
2995 v4l2_m2m_deps="linux_videodev2_h sem_timedwait"
2996
2997 hwupload_cuda_filter_deps="ffnvcodec"
2998 scale_npp_filter_deps="ffnvcodec libnpp"
2999 scale_cuda_filter_deps="ffnvcodec"
3000 scale_cuda_filter_deps_any="cuda_nvcc cuda_llvm"
3001 thumbnail_cuda_filter_deps="ffnvcodec"
3002 thumbnail_cuda_filter_deps_any="cuda_nvcc cuda_llvm"
3003 transpose_npp_filter_deps="ffnvcodec libnpp"
3004
3005 amf_deps_any="libdl LoadLibrary"
3006 nvenc_deps="ffnvcodec"
3007 nvenc_deps_any="libdl LoadLibrary"
3008 nvenc_encoder_deps="nvenc"
3009
3010 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
3011 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
3012 h264_amf_encoder_deps="amf"
3013 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
3014 h264_cuvid_decoder_deps="cuvid"
3015 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
3016 h264_mediacodec_decoder_deps="mediacodec"
3017 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
3018 h264_mmal_decoder_deps="mmal"
3019 h264_nvenc_encoder_deps="nvenc"
3020 h264_omx_encoder_deps="omx"
3021 h264_qsv_decoder_select="h264_mp4toannexb_bsf qsvdec"
3022 h264_qsv_encoder_select="qsvenc"
3023 h264_rkmpp_decoder_deps="rkmpp"
3024 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
3025 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
3026 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
3027 h264_v4l2m2m_decoder_select="h264_mp4toannexb_bsf"
3028 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
3029 hevc_amf_encoder_deps="amf"
3030 hevc_cuvid_decoder_deps="cuvid"
3031 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
3032 hevc_mediacodec_decoder_deps="mediacodec"
3033 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
3034 hevc_nvenc_encoder_deps="nvenc"
3035 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf qsvdec"
3036 hevc_qsv_encoder_select="hevcparse qsvenc"
3037 hevc_rkmpp_decoder_deps="rkmpp"
3038 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
3039 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
3040 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
3041 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
3042 hevc_v4l2m2m_decoder_select="hevc_mp4toannexb_bsf"
3043 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
3044 mjpeg_cuvid_decoder_deps="cuvid"
3045 mjpeg_qsv_decoder_select="qsvdec"
3046 mjpeg_qsv_encoder_deps="libmfx"
3047 mjpeg_qsv_encoder_select="qsvenc"
3048 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
3049 mjpeg_vaapi_encoder_select="cbs_jpeg jpegtables vaapi_encode"
3050 mpeg1_cuvid_decoder_deps="cuvid"
3051 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
3052 mpeg2_crystalhd_decoder_select="crystalhd"
3053 mpeg2_cuvid_decoder_deps="cuvid"
3054 mpeg2_mmal_decoder_deps="mmal"
3055 mpeg2_mediacodec_decoder_deps="mediacodec"
3056 mpeg2_qsv_decoder_select="qsvdec"
3057 mpeg2_qsv_encoder_select="qsvenc"
3058 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
3059 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
3060 mpeg4_crystalhd_decoder_select="crystalhd"
3061 mpeg4_cuvid_decoder_deps="cuvid"
3062 mpeg4_mediacodec_decoder_deps="mediacodec"
3063 mpeg4_mmal_decoder_deps="mmal"
3064 mpeg4_omx_encoder_deps="omx"
3065 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
3066 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
3067 msmpeg4_crystalhd_decoder_select="crystalhd"
3068 nvenc_h264_encoder_select="h264_nvenc_encoder"
3069 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
3070 vc1_crystalhd_decoder_select="crystalhd"
3071 vc1_cuvid_decoder_deps="cuvid"
3072 vc1_mmal_decoder_deps="mmal"
3073 vc1_qsv_decoder_select="qsvdec"
3074 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
3075 vp8_cuvid_decoder_deps="cuvid"
3076 vp8_mediacodec_decoder_deps="mediacodec"
3077 vp8_qsv_decoder_select="qsvdec"
3078 vp8_rkmpp_decoder_deps="rkmpp"
3079 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
3080 vp8_vaapi_encoder_select="vaapi_encode"
3081 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
3082 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
3083 vp9_cuvid_decoder_deps="cuvid"
3084 vp9_mediacodec_decoder_deps="mediacodec"
3085 vp9_rkmpp_decoder_deps="rkmpp"
3086 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
3087 vp9_vaapi_encoder_select="vaapi_encode"
3088 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
3089 wmv3_crystalhd_decoder_select="crystalhd"
3090
3091 # parsers
3092 aac_parser_select="adts_header"
3093 av1_parser_select="cbs_av1"
3094 h264_parser_select="golomb h264dsp h264parse"
3095 hevc_parser_select="hevcparse"
3096 mpegaudio_parser_select="mpegaudioheader"
3097 mpegvideo_parser_select="mpegvideo"
3098 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
3099 vc1_parser_select="vc1dsp"
3100
3101 # bitstream_filters
3102 aac_adtstoasc_bsf_select="adts_header"
3103 av1_frame_split_bsf_select="cbs_av1"
3104 av1_metadata_bsf_select="cbs_av1"
3105 eac3_core_bsf_select="ac3_parser"
3106 filter_units_bsf_select="cbs"
3107 h264_metadata_bsf_deps="const_nan"
3108 h264_metadata_bsf_select="cbs_h264"
3109 h264_redundant_pps_bsf_select="cbs_h264"
3110 hevc_metadata_bsf_select="cbs_h265"
3111 mjpeg2jpeg_bsf_select="jpegtables"
3112 mpeg2_metadata_bsf_select="cbs_mpeg2"
3113 trace_headers_bsf_select="cbs"
3114 vp9_metadata_bsf_select="cbs_vp9"
3115
3116 # external libraries
3117 aac_at_decoder_deps="audiotoolbox"
3118 aac_at_decoder_select="aac_adtstoasc_bsf"
3119 ac3_at_decoder_deps="audiotoolbox"
3120 ac3_at_decoder_select="ac3_parser"
3121 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
3122 alac_at_decoder_deps="audiotoolbox"
3123 amr_nb_at_decoder_deps="audiotoolbox"
3124 avisynth_deps_any="libdl LoadLibrary"
3125 avisynth_demuxer_deps="avisynth"
3126 avisynth_demuxer_select="riffdec"
3127 eac3_at_decoder_deps="audiotoolbox"
3128 eac3_at_decoder_select="ac3_parser"
3129 gsm_ms_at_decoder_deps="audiotoolbox"
3130 ilbc_at_decoder_deps="audiotoolbox"
3131 mp1_at_decoder_deps="audiotoolbox"
3132 mp2_at_decoder_deps="audiotoolbox"
3133 mp3_at_decoder_deps="audiotoolbox"
3134 mp1_at_decoder_select="mpegaudioheader"
3135 mp2_at_decoder_select="mpegaudioheader"
3136 mp3_at_decoder_select="mpegaudioheader"
3137 pcm_alaw_at_decoder_deps="audiotoolbox"
3138 pcm_mulaw_at_decoder_deps="audiotoolbox"
3139 qdmc_at_decoder_deps="audiotoolbox"
3140 qdm2_at_decoder_deps="audiotoolbox"
3141 aac_at_encoder_deps="audiotoolbox"
3142 aac_at_encoder_select="audio_frame_queue"
3143 alac_at_encoder_deps="audiotoolbox"
3144 alac_at_encoder_select="audio_frame_queue"
3145 ilbc_at_encoder_deps="audiotoolbox"
3146 ilbc_at_encoder_select="audio_frame_queue"
3147 pcm_alaw_at_encoder_deps="audiotoolbox"
3148 pcm_alaw_at_encoder_select="audio_frame_queue"
3149 pcm_mulaw_at_encoder_deps="audiotoolbox"
3150 pcm_mulaw_at_encoder_select="audio_frame_queue"
3151 chromaprint_muxer_deps="chromaprint"
3152 h264_videotoolbox_encoder_deps="pthreads"
3153 h264_videotoolbox_encoder_select="videotoolbox_encoder"
3154 hevc_videotoolbox_encoder_deps="pthreads"
3155 hevc_videotoolbox_encoder_select="videotoolbox_encoder"
3156 libaom_av1_decoder_deps="libaom"
3157 libaom_av1_encoder_deps="libaom"
3158 libaom_av1_encoder_select="extract_extradata_bsf"
3159 libaribb24_decoder_deps="libaribb24"
3160 libcelt_decoder_deps="libcelt"
3161 libcodec2_decoder_deps="libcodec2"
3162 libcodec2_encoder_deps="libcodec2"
3163 libdav1d_decoder_deps="libdav1d"
3164 libdavs2_decoder_deps="libdavs2"
3165 libfdk_aac_decoder_deps="libfdk_aac"
3166 libfdk_aac_encoder_deps="libfdk_aac"
3167 libfdk_aac_encoder_select="audio_frame_queue"
3168 libgme_demuxer_deps="libgme"
3169 libgsm_decoder_deps="libgsm"
3170 libgsm_encoder_deps="libgsm"
3171 libgsm_ms_decoder_deps="libgsm"
3172 libgsm_ms_encoder_deps="libgsm"
3173 libilbc_decoder_deps="libilbc"
3174 libilbc_encoder_deps="libilbc"
3175 libkvazaar_encoder_deps="libkvazaar"
3176 libmodplug_demuxer_deps="libmodplug"
3177 libmp3lame_encoder_deps="libmp3lame"
3178 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
3179 libopencore_amrnb_decoder_deps="libopencore_amrnb"
3180 libopencore_amrnb_encoder_deps="libopencore_amrnb"
3181 libopencore_amrnb_encoder_select="audio_frame_queue"
3182 libopencore_amrwb_decoder_deps="libopencore_amrwb"
3183 libopenh264_decoder_deps="libopenh264"
3184 libopenh264_decoder_select="h264_mp4toannexb_bsf"
3185 libopenh264_encoder_deps="libopenh264"
3186 libopenjpeg_decoder_deps="libopenjpeg"
3187 libopenjpeg_encoder_deps="libopenjpeg"
3188 libopenmpt_demuxer_deps="libopenmpt"
3189 libopus_decoder_deps="libopus"
3190 libopus_encoder_deps="libopus"
3191 libopus_encoder_select="audio_frame_queue"
3192 librsvg_decoder_deps="librsvg"
3193 libshine_encoder_deps="libshine"
3194 libshine_encoder_select="audio_frame_queue"
3195 libspeex_decoder_deps="libspeex"
3196 libspeex_encoder_deps="libspeex"
3197 libspeex_encoder_select="audio_frame_queue"
3198 libtheora_encoder_deps="libtheora"
3199 libtwolame_encoder_deps="libtwolame"
3200 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
3201 libvorbis_decoder_deps="libvorbis"
3202 libvorbis_encoder_deps="libvorbis libvorbisenc"
3203 libvorbis_encoder_select="audio_frame_queue"
3204 libvpx_vp8_decoder_deps="libvpx"
3205 libvpx_vp8_encoder_deps="libvpx"
3206 libvpx_vp9_decoder_deps="libvpx"
3207 libvpx_vp9_encoder_deps="libvpx"
3208 libwavpack_encoder_deps="libwavpack"
3209 libwavpack_encoder_select="audio_frame_queue"
3210 libwebp_encoder_deps="libwebp"
3211 libwebp_anim_encoder_deps="libwebp"
3212 libx262_encoder_deps="libx262"
3213 libx264_encoder_deps="libx264"
3214 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
3215 libx264rgb_encoder_select="libx264_encoder"
3216 libx265_encoder_deps="libx265"
3217 libxavs_encoder_deps="libxavs"
3218 libxavs2_encoder_deps="libxavs2"
3219 libxvid_encoder_deps="libxvid"
3220 libzvbi_teletext_decoder_deps="libzvbi"
3221 vapoursynth_demuxer_deps="vapoursynth"
3222 videotoolbox_suggest="coreservices"
3223 videotoolbox_deps="corefoundation coremedia corevideo"
3224 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
3225
3226 # demuxers / muxers
3227 ac3_demuxer_select="ac3_parser"
3228 aiff_muxer_select="iso_media"
3229 asf_demuxer_select="riffdec"
3230 asf_o_demuxer_select="riffdec"
3231 asf_muxer_select="riffenc"
3232 asf_stream_muxer_select="asf_muxer"
3233 avi_demuxer_select="iso_media riffdec exif"
3234 avi_muxer_select="riffenc"
3235 caf_demuxer_select="iso_media riffdec"
3236 caf_muxer_select="iso_media"
3237 dash_muxer_select="mp4_muxer"
3238 dash_demuxer_deps="libxml2"
3239 dirac_demuxer_select="dirac_parser"
3240 dts_demuxer_select="dca_parser"
3241 dtshd_demuxer_select="dca_parser"
3242 dv_demuxer_select="dvprofile"
3243 dv_muxer_select="dvprofile"
3244 dxa_demuxer_select="riffdec"
3245 eac3_demuxer_select="ac3_parser"
3246 f4v_muxer_select="mov_muxer"
3247 fifo_muxer_deps="threads"
3248 flac_demuxer_select="flac_parser"
3249 hds_muxer_select="flv_muxer"
3250 hls_muxer_select="mpegts_muxer"
3251 hls_muxer_suggest="gcrypt openssl"
3252 image2_alias_pix_demuxer_select="image2_demuxer"
3253 image2_brender_pix_demuxer_select="image2_demuxer"
3254 ipod_muxer_select="mov_muxer"
3255 ismv_muxer_select="mov_muxer"
3256 ivf_muxer_select="av1_metadata_bsf vp9_superframe_bsf"
3257 matroska_audio_muxer_select="matroska_muxer"
3258 matroska_demuxer_select="iso_media riffdec"
3259 matroska_demuxer_suggest="bzlib lzo zlib"
3260 matroska_muxer_select="iso_media riffenc"
3261 mmf_muxer_select="riffenc"
3262 mov_demuxer_select="iso_media riffdec"
3263 mov_demuxer_suggest="zlib"
3264 mov_muxer_select="iso_media riffenc rtpenc_chain"
3265 mp3_demuxer_select="mpegaudio_parser"
3266 mp3_muxer_select="mpegaudioheader"
3267 mp4_muxer_select="mov_muxer"
3268 mpegts_demuxer_select="iso_media"
3269 mpegts_muxer_select="adts_muxer latm_muxer"
3270 mpegtsraw_demuxer_select="mpegts_demuxer"
3271 mxf_d10_muxer_select="mxf_muxer"
3272 mxf_opatom_muxer_select="mxf_muxer"
3273 nut_muxer_select="riffenc"
3274 nuv_demuxer_select="riffdec"
3275 oga_muxer_select="ogg_muxer"
3276 ogg_demuxer_select="dirac_parse"
3277 ogv_muxer_select="ogg_muxer"
3278 opus_muxer_select="ogg_muxer"
3279 psp_muxer_select="mov_muxer"
3280 rtp_demuxer_select="sdp_demuxer"
3281 rtp_muxer_select="golomb"
3282 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3283 rtsp_demuxer_select="http_protocol rtpdec"
3284 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3285 sap_demuxer_select="sdp_demuxer"
3286 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3287 sdp_demuxer_select="rtpdec"
3288 smoothstreaming_muxer_select="ismv_muxer"
3289 spdif_demuxer_select="adts_header"
3290 spdif_muxer_select="adts_header"
3291 spx_muxer_select="ogg_muxer"
3292 swf_demuxer_suggest="zlib"
3293 tak_demuxer_select="tak_parser"
3294 tg2_muxer_select="mov_muxer"
3295 tgp_muxer_select="mov_muxer"
3296 vobsub_demuxer_select="mpegps_demuxer"
3297 w64_demuxer_select="wav_demuxer"
3298 w64_muxer_select="wav_muxer"
3299 wav_demuxer_select="riffdec"
3300 wav_muxer_select="riffenc"
3301 webm_muxer_select="iso_media riffenc"
3302 webm_dash_manifest_demuxer_select="matroska_demuxer"
3303 wtv_demuxer_select="mpegts_demuxer riffdec"
3304 wtv_muxer_select="mpegts_muxer riffenc"
3305 xmv_demuxer_select="riffdec"
3306 xwma_demuxer_select="riffdec"
3307
3308 # indevs / outdevs
3309 android_camera_indev_deps="android camera2ndk mediandk pthreads"
3310 android_camera_indev_extralibs="-landroid -lcamera2ndk -lmediandk"
3311 alsa_indev_deps="alsa"
3312 alsa_outdev_deps="alsa"
3313 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3314 avfoundation_indev_suggest="coregraphics applicationservices"
3315 avfoundation_indev_extralibs="-framework Foundation"
3316 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3317 caca_outdev_deps="libcaca"
3318 decklink_deps_any="libdl LoadLibrary"
3319 decklink_indev_deps="decklink threads"
3320 decklink_indev_extralibs="-lstdc++"
3321 decklink_outdev_deps="decklink threads"
3322 decklink_outdev_suggest="libklvanc"
3323 decklink_outdev_extralibs="-lstdc++"
3324 dshow_indev_deps="IBaseFilter"
3325 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3326 fbdev_indev_deps="linux_fb_h"
3327 fbdev_outdev_deps="linux_fb_h"
3328 gdigrab_indev_deps="CreateDIBSection"
3329 gdigrab_indev_extralibs="-lgdi32"
3330 gdigrab_indev_select="bmp_decoder"
3331 iec61883_indev_deps="libiec61883"
3332 jack_indev_deps="libjack"
3333 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3334 kmsgrab_indev_deps="libdrm"
3335 lavfi_indev_deps="avfilter"
3336 libcdio_indev_deps="libcdio"
3337 libdc1394_indev_deps="libdc1394"
3338 openal_indev_deps="openal"
3339 opengl_outdev_deps="opengl"
3340 opengl_outdev_suggest="sdl2"
3341 oss_indev_deps_any="sys_soundcard_h"
3342 oss_outdev_deps_any="sys_soundcard_h"
3343 pulse_indev_deps="libpulse"
3344 pulse_outdev_deps="libpulse"
3345 sdl2_outdev_deps="sdl2"
3346 sndio_indev_deps="sndio"
3347 sndio_outdev_deps="sndio"
3348 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3349 v4l2_indev_suggest="libv4l2"
3350 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3351 v4l2_outdev_suggest="libv4l2"
3352 vfwcap_indev_deps="vfw32 vfwcap_defines"
3353 xcbgrab_indev_deps="libxcb"
3354 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3355 xv_outdev_deps="xlib"
3356
3357 # protocols
3358 async_protocol_deps="threads"
3359 bluray_protocol_deps="libbluray"
3360 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3361 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl mbedtls"
3362 ffrtmpcrypt_protocol_select="tcp_protocol"
3363 ffrtmphttp_protocol_conflict="librtmp_protocol"
3364 ffrtmphttp_protocol_select="http_protocol"
3365 ftp_protocol_select="tcp_protocol"
3366 gopher_protocol_select="network"
3367 http_protocol_select="tcp_protocol"
3368 http_protocol_suggest="zlib"
3369 httpproxy_protocol_select="tcp_protocol"
3370 httpproxy_protocol_suggest="zlib"
3371 https_protocol_select="tls_protocol"
3372 https_protocol_suggest="zlib"
3373 icecast_protocol_select="http_protocol"
3374 mmsh_protocol_select="http_protocol"
3375 mmst_protocol_select="network"
3376 rtmp_protocol_conflict="librtmp_protocol"
3377 rtmp_protocol_select="tcp_protocol"
3378 rtmp_protocol_suggest="zlib"
3379 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3380 rtmpe_protocol_suggest="zlib"
3381 rtmps_protocol_conflict="librtmp_protocol"
3382 rtmps_protocol_select="tls_protocol"
3383 rtmps_protocol_suggest="zlib"
3384 rtmpt_protocol_select="ffrtmphttp_protocol"
3385 rtmpt_protocol_suggest="zlib"
3386 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3387 rtmpte_protocol_suggest="zlib"
3388 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3389 rtmpts_protocol_suggest="zlib"
3390 rtp_protocol_select="udp_protocol"
3391 schannel_conflict="openssl gnutls libtls mbedtls"
3392 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3393 sctp_protocol_select="network"
3394 securetransport_conflict="openssl gnutls libtls mbedtls"
3395 srtp_protocol_select="rtp_protocol srtp"
3396 tcp_protocol_select="network"
3397 tls_protocol_deps_any="gnutls openssl schannel securetransport libtls mbedtls"
3398 tls_protocol_select="tcp_protocol"
3399 udp_protocol_select="network"
3400 udplite_protocol_select="network"
3401 unix_protocol_deps="sys_un_h"
3402 unix_protocol_select="network"
3403
3404 # external library protocols
3405 librtmp_protocol_deps="librtmp"
3406 librtmpe_protocol_deps="librtmp"
3407 librtmps_protocol_deps="librtmp"
3408 librtmpt_protocol_deps="librtmp"
3409 librtmpte_protocol_deps="librtmp"
3410 libsmbclient_protocol_deps="libsmbclient gplv3"
3411 libsrt_protocol_deps="libsrt"
3412 libsrt_protocol_select="network"
3413 libssh_protocol_deps="libssh"
3414 libtls_conflict="openssl gnutls mbedtls"
3415
3416 # filters
3417 afftdn_filter_deps="avcodec"
3418 afftdn_filter_select="fft"
3419 afftfilt_filter_deps="avcodec"
3420 afftfilt_filter_select="fft"
3421 afir_filter_deps="avcodec"
3422 afir_filter_select="fft"
3423 amovie_filter_deps="avcodec avformat"
3424 aresample_filter_deps="swresample"
3425 asr_filter_deps="pocketsphinx"
3426 ass_filter_deps="libass"
3427 atempo_filter_deps="avcodec"
3428 atempo_filter_select="rdft"
3429 avgblur_opencl_filter_deps="opencl"
3430 azmq_filter_deps="libzmq"
3431 blackframe_filter_deps="gpl"
3432 bm3d_filter_deps="avcodec"
3433 bm3d_filter_select="dct"
3434 boxblur_filter_deps="gpl"
3435 boxblur_opencl_filter_deps="opencl gpl"
3436 bs2b_filter_deps="libbs2b"
3437 colorkey_opencl_filter_deps="opencl"
3438 colormatrix_filter_deps="gpl"
3439 convolution_opencl_filter_deps="opencl"
3440 convolve_filter_deps="avcodec"
3441 convolve_filter_select="fft"
3442 coreimage_filter_deps="coreimage appkit"
3443 coreimage_filter_extralibs="-framework OpenGL"
3444 coreimagesrc_filter_deps="coreimage appkit"
3445 coreimagesrc_filter_extralibs="-framework OpenGL"
3446 cover_rect_filter_deps="avcodec avformat gpl"
3447 cropdetect_filter_deps="gpl"
3448 deconvolve_filter_deps="avcodec"
3449 deconvolve_filter_select="fft"
3450 deinterlace_qsv_filter_deps="libmfx"
3451 deinterlace_vaapi_filter_deps="vaapi"
3452 delogo_filter_deps="gpl"
3453 denoise_vaapi_filter_deps="vaapi"
3454 derain_filter_select="dnn"
3455 deshake_filter_select="pixelutils"
3456 dilation_opencl_filter_deps="opencl"
3457 drawtext_filter_deps="libfreetype"
3458 drawtext_filter_suggest="libfontconfig libfribidi"
3459 elbg_filter_deps="avcodec"
3460 eq_filter_deps="gpl"
3461 erosion_opencl_filter_deps="opencl"
3462 fftfilt_filter_deps="avcodec"
3463 fftfilt_filter_select="rdft"
3464 fftdnoiz_filter_deps="avcodec"
3465 fftdnoiz_filter_select="fft"
3466 find_rect_filter_deps="avcodec avformat gpl"
3467 firequalizer_filter_deps="avcodec"
3468 firequalizer_filter_select="rdft"
3469 flite_filter_deps="libflite"
3470 framerate_filter_select="scene_sad"
3471 freezedetect_filter_select="scene_sad"
3472 frei0r_filter_deps="frei0r libdl"
3473 frei0r_src_filter_deps="frei0r libdl"
3474 fspp_filter_deps="gpl"
3475 geq_filter_deps="gpl"
3476 histeq_filter_deps="gpl"
3477 hqdn3d_filter_deps="gpl"
3478 interlace_filter_deps="gpl"
3479 kerndeint_filter_deps="gpl"
3480 ladspa_filter_deps="ladspa libdl"
3481 lensfun_filter_deps="liblensfun version3"
3482 lv2_filter_deps="lv2"
3483 mcdeint_filter_deps="avcodec gpl"
3484 movie_filter_deps="avcodec avformat"
3485 mpdecimate_filter_deps="gpl"
3486 mpdecimate_filter_select="pixelutils"
3487 minterpolate_filter_select="scene_sad"
3488 mptestsrc_filter_deps="gpl"
3489 negate_filter_deps="lut_filter"
3490 nlmeans_opencl_filter_deps="opencl"
3491 nnedi_filter_deps="gpl"
3492 ocr_filter_deps="libtesseract"
3493 ocv_filter_deps="libopencv"
3494 openclsrc_filter_deps="opencl"
3495 overlay_opencl_filter_deps="opencl"
3496 overlay_qsv_filter_deps="libmfx"
3497 overlay_qsv_filter_select="qsvvpp"
3498 owdenoise_filter_deps="gpl"
3499 pan_filter_deps="swresample"
3500 perspective_filter_deps="gpl"
3501 phase_filter_deps="gpl"
3502 pp7_filter_deps="gpl"
3503 pp_filter_deps="gpl postproc"
3504 prewitt_opencl_filter_deps="opencl"
3505 procamp_vaapi_filter_deps="vaapi"
3506 program_opencl_filter_deps="opencl"
3507 pullup_filter_deps="gpl"
3508 removelogo_filter_deps="avcodec avformat swscale"
3509 repeatfields_filter_deps="gpl"
3510 resample_filter_deps="avresample"
3511 roberts_opencl_filter_deps="opencl"
3512 rubberband_filter_deps="librubberband"
3513 sab_filter_deps="gpl swscale"
3514 scale2ref_filter_deps="swscale"
3515 scale_filter_deps="swscale"
3516 scale_qsv_filter_deps="libmfx"
3517 select_filter_select="scene_sad"
3518 sharpness_vaapi_filter_deps="vaapi"
3519 showcqt_filter_deps="avcodec avformat swscale"
3520 showcqt_filter_suggest="libfontconfig libfreetype"
3521 showcqt_filter_select="fft"
3522 showfreqs_filter_deps="avcodec"
3523 showfreqs_filter_select="fft"
3524 showspectrum_filter_deps="avcodec"
3525 showspectrum_filter_select="fft"
3526 showspectrumpic_filter_deps="avcodec"
3527 showspectrumpic_filter_select="fft"
3528 signature_filter_deps="gpl avcodec avformat"
3529 smartblur_filter_deps="gpl swscale"
3530 sobel_opencl_filter_deps="opencl"
3531 sofalizer_filter_deps="libmysofa avcodec"
3532 sofalizer_filter_select="fft"
3533 spectrumsynth_filter_deps="avcodec"
3534 spectrumsynth_filter_select="fft"
3535 spp_filter_deps="gpl avcodec"
3536 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3537 sr_filter_deps="avformat swscale"
3538 sr_filter_select="dnn"
3539 stereo3d_filter_deps="gpl"
3540 subtitles_filter_deps="avformat avcodec libass"
3541 super2xsai_filter_deps="gpl"
3542 pixfmts_super2xsai_test_deps="super2xsai_filter"
3543 tinterlace_filter_deps="gpl"
3544 tinterlace_merge_test_deps="tinterlace_filter"
3545 tinterlace_pad_test_deps="tinterlace_filter"
3546 tonemap_filter_deps="const_nan"
3547 tonemap_opencl_filter_deps="opencl const_nan"
3548 transpose_opencl_filter_deps="opencl"
3549 transpose_vaapi_filter_deps="vaapi VAProcPipelineCaps_rotation_flags"
3550 unsharp_opencl_filter_deps="opencl"
3551 uspp_filter_deps="gpl avcodec"
3552 vaguedenoiser_filter_deps="gpl"
3553 vidstabdetect_filter_deps="libvidstab"
3554 vidstabtransform_filter_deps="libvidstab"
3555 libvmaf_filter_deps="libvmaf pthreads"
3556 zmq_filter_deps="libzmq"
3557 zoompan_filter_deps="swscale"
3558 zscale_filter_deps="libzimg const_nan"
3559 scale_vaapi_filter_deps="vaapi"
3560 vpp_qsv_filter_deps="libmfx"
3561 vpp_qsv_filter_select="qsvvpp"
3562 yadif_cuda_filter_deps="ffnvcodec"
3563 yadif_cuda_filter_deps_any="cuda_nvcc cuda_llvm"
3564
3565 # examples
3566 avio_dir_cmd_deps="avformat avutil"
3567 avio_reading_deps="avformat avcodec avutil"
3568 decode_audio_example_deps="avcodec avutil"
3569 decode_video_example_deps="avcodec avutil"
3570 demuxing_decoding_example_deps="avcodec avformat avutil"
3571 encode_audio_example_deps="avcodec avutil"
3572 encode_video_example_deps="avcodec avutil"
3573 extract_mvs_example_deps="avcodec avformat avutil"
3574 filter_audio_example_deps="avfilter avutil"
3575 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3576 filtering_video_example_deps="avfilter avcodec avformat avutil"
3577 http_multiclient_example_deps="avformat avutil fork"
3578 hw_decode_example_deps="avcodec avformat avutil"
3579 metadata_example_deps="avformat avutil"
3580 muxing_example_deps="avcodec avformat avutil swscale"
3581 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3582 remuxing_example_deps="avcodec avformat avutil"
3583 resampling_audio_example_deps="avutil swresample"
3584 scaling_video_example_deps="avutil swscale"
3585 transcode_aac_example_deps="avcodec avformat swresample"
3586 transcoding_example_deps="avfilter avcodec avformat avutil"
3587 vaapi_encode_example_deps="avcodec avutil h264_vaapi_encoder"
3588 vaapi_transcode_example_deps="avcodec avformat avutil h264_vaapi_encoder"
3589
3590 # EXTRALIBS_LIST
3591 cpu_init_extralibs="pthreads_extralibs"
3592 cws2fws_extralibs="zlib_extralibs"
3593
3594 # libraries, in any order
3595 avcodec_deps="avutil"
3596 avcodec_suggest="libm"
3597 avcodec_select="null_bsf"
3598 avdevice_deps="avformat avcodec avutil"
3599 avdevice_suggest="libm"
3600 avfilter_deps="avutil"
3601 avfilter_suggest="libm"
3602 avformat_deps="avcodec avutil"
3603 avformat_suggest="libm network zlib"
3604 avresample_deps="avutil"
3605 avresample_suggest="libm"
3606 avutil_suggest="clock_gettime ffnvcodec libm libdrm libmfx opencl user32 vaapi videotoolbox corefoundation corevideo coremedia bcrypt"
3607 postproc_deps="avutil gpl"
3608 postproc_suggest="libm"
3609 swresample_deps="avutil"
3610 swresample_suggest="libm libsoxr"
3611 swscale_deps="avutil"
3612 swscale_suggest="libm"
3613
3614 avcodec_extralibs="pthreads_extralibs iconv_extralibs dxva2_extralibs"
3615 avfilter_extralibs="pthreads_extralibs"
3616 avutil_extralibs="d3d11va_extralibs nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3617
3618 # programs
3619 ffmpeg_deps="avcodec avfilter avformat"
3620 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3621                hflip_filter null_filter
3622                transpose_filter trim_filter vflip_filter"
3623 ffmpeg_suggest="ole32 psapi shell32"
3624 ffplay_deps="avcodec avformat swscale swresample sdl2"
3625 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3626 ffplay_suggest="shell32"
3627 ffprobe_deps="avcodec avformat"
3628 ffprobe_suggest="shell32"
3629
3630 # documentation
3631 podpages_deps="perl"
3632 manpages_deps="perl pod2man"
3633 htmlpages_deps="perl"
3634 htmlpages_deps_any="makeinfo_html texi2html"
3635 txtpages_deps="perl makeinfo"
3636 doc_deps_any="manpages htmlpages podpages txtpages"
3637
3638 # default parameters
3639
3640 logfile="ffbuild/config.log"
3641
3642 # installation paths
3643 prefix_default="/usr/local"
3644 bindir_default='${prefix}/bin'
3645 datadir_default='${prefix}/share/ffmpeg'
3646 docdir_default='${prefix}/share/doc/ffmpeg'
3647 incdir_default='${prefix}/include'
3648 libdir_default='${prefix}/lib'
3649 mandir_default='${prefix}/share/man'
3650
3651 # toolchain
3652 ar_default="ar"
3653 cc_default="gcc"
3654 cxx_default="g++"
3655 host_cc_default="gcc"
3656 doxygen_default="doxygen"
3657 install="install"
3658 ln_s_default="ln -s -f"
3659 nm_default="nm -g"
3660 pkg_config_default=pkg-config
3661 ranlib_default="ranlib"
3662 strip_default="strip"
3663 version_script='--version-script'
3664 objformat="elf32"
3665 x86asmexe_default="nasm"
3666 windres_default="windres"
3667 striptype="direct"
3668
3669 # OS
3670 target_os_default=$(tolower $(uname -s))
3671 host_os=$target_os_default
3672
3673 # machine
3674 if test "$target_os_default" = aix; then
3675     arch_default=$(uname -p)
3676     strip_default="strip -X32_64"
3677     nm_default="nm -g -X32_64"
3678 else
3679     arch_default=$(uname -m)
3680 fi
3681 cpu="generic"
3682 intrinsics="none"
3683
3684 # configurable options
3685 enable $PROGRAM_LIST
3686 enable $DOCUMENT_LIST
3687 enable $EXAMPLE_LIST
3688 enable $(filter_out avresample $LIBRARY_LIST)
3689 enable stripping
3690
3691 enable asm
3692 enable debug
3693 enable doc
3694 enable faan faandct faanidct
3695 enable optimizations
3696 enable runtime_cpudetect
3697 enable safe_bitstream_reader
3698 enable static
3699 enable swscale_alpha
3700 enable valgrind_backtrace
3701
3702 sws_max_filter_size_default=256
3703 set_default sws_max_filter_size
3704
3705 # internal components are enabled by default
3706 enable $EXTRALIBS_LIST
3707
3708 # Avoid external, non-system, libraries getting enabled by dependency resolution
3709 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3710
3711 # build settings
3712 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3713 LIBPREF="lib"
3714 LIBSUF=".a"
3715 FULLNAME='$(NAME)$(BUILDSUF)'
3716 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3717 SLIBPREF="lib"
3718 SLIBSUF=".so"
3719 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3720 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3721 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3722 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3723 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3724 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3725 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3726
3727 asflags_filter=echo
3728 cflags_filter=echo
3729 ldflags_filter=echo
3730
3731 AS_C='-c'
3732 AS_O='-o $@'
3733 CC_C='-c'
3734 CC_E='-E -o $@'
3735 CC_O='-o $@'
3736 CXX_C='-c'
3737 CXX_O='-o $@'
3738 OBJCC_C='-c'
3739 OBJCC_E='-E -o $@'
3740 OBJCC_O='-o $@'
3741 X86ASM_O='-o $@'
3742 LD_O='-o $@'
3743 LD_LIB='-l%'
3744 LD_PATH='-L'
3745 HOSTCC_C='-c'
3746 HOSTCC_E='-E -o $@'
3747 HOSTCC_O='-o $@'
3748 HOSTLD_O='-o $@'
3749 NVCC_C='-c'
3750 NVCC_O='-o $@'
3751
3752 host_extralibs='-lm'
3753 host_cflags_filter=echo
3754 host_ldflags_filter=echo
3755
3756 target_path='$(CURDIR)'
3757
3758 # since the object filename is not given with the -MM flag, the compiler
3759 # is only able to print the basename, and we must add the path ourselves
3760 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3761 DEPFLAGS='-MM'
3762
3763 mkdir -p ffbuild
3764
3765 # find source path
3766 if test -f configure; then
3767     source_path=.
3768 elif test -f src/configure; then
3769     source_path=src
3770 else
3771     source_path=$(cd $(dirname "$0"); pwd)
3772     case "$source_path" in
3773         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3774     esac
3775     test -e "$source_path/config.h" &&
3776         die "Out of tree builds are impossible with config.h in source dir."
3777 fi
3778
3779 for v in "$@"; do
3780     r=${v#*=}
3781     l=${v%"$r"}
3782     r=$(sh_quote "$r")
3783     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3784 done
3785
3786 find_things_extern(){
3787     thing=$1
3788     pattern=$2
3789     file=$source_path/$3
3790     out=${4:-$thing}
3791     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$out/p" "$file"
3792 }
3793
3794 find_filters_extern(){
3795     file=$source_path/$1
3796     sed -n 's/^extern AVFilter ff_[avfsinkrc]\{2,5\}_\([[:alnum:]_]\{1,\}\);/\1_filter/p' $file
3797 }
3798
3799 FILTER_LIST=$(find_filters_extern libavfilter/allfilters.c)
3800 OUTDEV_LIST=$(find_things_extern muxer AVOutputFormat libavdevice/alldevices.c outdev)
3801 INDEV_LIST=$(find_things_extern demuxer AVInputFormat libavdevice/alldevices.c indev)
3802 MUXER_LIST=$(find_things_extern muxer AVOutputFormat libavformat/allformats.c)
3803 DEMUXER_LIST=$(find_things_extern demuxer AVInputFormat libavformat/allformats.c)
3804 ENCODER_LIST=$(find_things_extern encoder AVCodec libavcodec/allcodecs.c)
3805 DECODER_LIST=$(find_things_extern decoder AVCodec libavcodec/allcodecs.c)
3806 CODEC_LIST="
3807     $ENCODER_LIST
3808     $DECODER_LIST
3809 "
3810 PARSER_LIST=$(find_things_extern parser AVCodecParser libavcodec/parsers.c)
3811 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3812 HWACCEL_LIST=$(find_things_extern hwaccel AVHWAccel libavcodec/hwaccels.h)
3813 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3814
3815 AVCODEC_COMPONENTS_LIST="
3816     $BSF_LIST
3817     $DECODER_LIST
3818     $ENCODER_LIST
3819     $HWACCEL_LIST
3820     $PARSER_LIST
3821 "
3822
3823 AVDEVICE_COMPONENTS_LIST="
3824     $INDEV_LIST
3825     $OUTDEV_LIST
3826 "
3827
3828 AVFILTER_COMPONENTS_LIST="
3829     $FILTER_LIST
3830 "
3831
3832 AVFORMAT_COMPONENTS_LIST="
3833     $DEMUXER_LIST
3834     $MUXER_LIST
3835     $PROTOCOL_LIST
3836 "
3837
3838 ALL_COMPONENTS="
3839     $AVCODEC_COMPONENTS_LIST
3840     $AVDEVICE_COMPONENTS_LIST
3841     $AVFILTER_COMPONENTS_LIST
3842     $AVFORMAT_COMPONENTS_LIST
3843 "
3844
3845 for n in $COMPONENT_LIST; do
3846     v=$(toupper ${n%s})_LIST
3847     eval enable \$$v
3848     eval ${n}_if_any="\$$v"
3849 done
3850
3851 enable $ARCH_EXT_LIST
3852
3853 die_unknown(){
3854     echo "Unknown option \"$1\"."
3855     echo "See $0 --help for available options."
3856     exit 1
3857 }
3858
3859 print_in_columns() {
3860     tr ' ' '\n' | sort | tr '\r\n' '  ' | awk -v col_width=24 -v width="$ncols" '
3861     {
3862         num_cols = width > col_width ? int(width / col_width) : 1;
3863         num_rows = int((NF + num_cols-1) / num_cols);
3864         y = x = 1;
3865         for (y = 1; y <= num_rows; y++) {
3866             i = y;
3867             for (x = 1; x <= num_cols; x++) {
3868                 if (i <= NF) {
3869                   line = sprintf("%s%-" col_width "s", line, $i);
3870                 }
3871                 i = i + num_rows;
3872             }
3873             print line; line = "";
3874         }
3875     }' | sed 's/ *$//'
3876 }
3877
3878 show_list() {
3879     suffix=_$1
3880     shift
3881     echo $* | sed s/$suffix//g | print_in_columns
3882     exit 0
3883 }
3884
3885 rand_list(){
3886     IFS=', '
3887     set -- $*
3888     unset IFS
3889     for thing; do
3890         comp=${thing%:*}
3891         prob=${thing#$comp}
3892         prob=${prob#:}
3893         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3894         echo "prob ${prob:-0.5}"
3895         printf '%s\n' $comp
3896     done
3897 }
3898
3899 do_random(){
3900     action=$1
3901     shift
3902     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3903     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3904 }
3905
3906 for opt do
3907     optval="${opt#*=}"
3908     case "$opt" in
3909         --extra-ldflags=*)
3910             add_ldflags $optval
3911         ;;
3912         --extra-ldexeflags=*)
3913             add_ldexeflags $optval
3914         ;;
3915         --extra-ldsoflags=*)
3916             add_ldsoflags $optval
3917         ;;
3918         --extra-ldlibflags=*)
3919             warn "The --extra-ldlibflags option is only provided for compatibility and will be\n"\
3920                  "removed in the future. Use --extra-ldsoflags instead."
3921             add_ldsoflags $optval
3922         ;;
3923         --extra-libs=*)
3924             add_extralibs $optval
3925         ;;
3926         --disable-devices)
3927             disable $INDEV_LIST $OUTDEV_LIST
3928         ;;
3929         --enable-debug=*)
3930             debuglevel="$optval"
3931         ;;
3932         --disable-programs)
3933             disable $PROGRAM_LIST
3934         ;;
3935         --disable-everything)
3936             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3937         ;;
3938         --disable-all)
3939             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3940             disable $LIBRARY_LIST $PROGRAM_LIST doc
3941             enable avutil
3942         ;;
3943         --enable-random|--disable-random)
3944             action=${opt%%-random}
3945             do_random ${action#--} $COMPONENT_LIST
3946         ;;
3947         --enable-random=*|--disable-random=*)
3948             action=${opt%%-random=*}
3949             do_random ${action#--} $optval
3950         ;;
3951         --enable-sdl)
3952             enable sdl2
3953         ;;
3954         --enable-*=*|--disable-*=*)
3955             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3956             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3957             eval list=\$$(toupper $thing)_LIST
3958             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3959             list=$(filter "$name" $list)
3960             [ "$list" = "" ] && warn "Option $opt did not match anything"
3961             test $action = enable && warn_if_gets_disabled $list
3962             $action $list
3963         ;;
3964         --enable-yasm|--disable-yasm)
3965             warn "The ${opt} option is only provided for compatibility and will be\n"\
3966                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3967             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3968         ;;
3969         --yasmexe=*)
3970             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3971                  "removed in the future. Use --x86asmexe instead."
3972             x86asmexe="$optval"
3973         ;;
3974         --enable-?*|--disable-?*)
3975             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3976             if is_in $option $COMPONENT_LIST; then
3977                 test $action = disable && action=unset
3978                 eval $action \$$(toupper ${option%s})_LIST
3979             elif is_in $option $CMDLINE_SELECT; then
3980                 $action $option
3981             else
3982                 die_unknown $opt
3983             fi
3984         ;;
3985         --list-*)
3986             NAME="${opt#--list-}"
3987             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3988             NAME=${NAME%s}
3989             eval show_list $NAME \$$(toupper $NAME)_LIST
3990         ;;
3991         --help|-h) show_help
3992         ;;
3993         --quiet|-q) quiet=yes
3994         ;;
3995         --fatal-warnings) enable fatal_warnings
3996         ;;
3997         --libfuzzer=*)
3998             libfuzzer_path="$optval"
3999         ;;
4000         *)
4001             optname="${opt%%=*}"
4002             optname="${optname#--}"
4003             optname=$(echo "$optname" | sed 's/-/_/g')
4004             if is_in $optname $CMDLINE_SET; then
4005                 eval $optname='$optval'
4006             elif is_in $optname $CMDLINE_APPEND; then
4007                 append $optname "$optval"
4008             else
4009                 die_unknown $opt
4010             fi
4011         ;;
4012     esac
4013 done
4014
4015 for e in $env; do
4016     eval "export $e"
4017 done
4018
4019 if disabled autodetect; then
4020
4021     # Unless iconv is explicitely disabled by the user, we still want to probe
4022     # for the iconv from the libc.
4023     disabled iconv || enable libc_iconv
4024
4025     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
4026     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
4027 fi
4028 # Mark specifically enabled, but normally autodetected libraries as requested.
4029 for lib in $AUTODETECT_LIBS; do
4030     enabled $lib && request $lib
4031 done
4032 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
4033 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
4034 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
4035
4036 disabled logging && logfile=/dev/null
4037
4038 # command line configuration sanity checks
4039
4040 # we need to build at least one lib type
4041 if ! enabled_any static shared; then
4042     cat <<EOF
4043 At least one library type must be built.
4044 Specify --enable-static to build the static libraries or --enable-shared to
4045 build the shared libraries as well. To only build the shared libraries specify
4046 --disable-static in addition to --enable-shared.
4047 EOF
4048     exit 1
4049 fi
4050
4051 die_license_disabled() {
4052     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
4053 }
4054
4055 die_license_disabled_gpl() {
4056     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
4057 }
4058
4059 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
4060 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
4061
4062 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
4063 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
4064
4065 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4066
4067 if enabled nonfree; then
4068     license="nonfree and unredistributable"
4069 elif enabled gplv3; then
4070     license="GPL version 3 or later"
4071 elif enabled lgplv3; then
4072     license="LGPL version 3 or later"
4073 elif enabled gpl; then
4074     license="GPL version 2 or later"
4075 else
4076     license="LGPL version 2.1 or later"
4077 fi
4078
4079 enabled_all gnutls openssl &&
4080     die "GnuTLS and OpenSSL must not be enabled at the same time."
4081
4082 enabled_all gnutls mbedtls &&
4083     die "GnuTLS and mbedTLS must not be enabled at the same time."
4084
4085 enabled_all openssl mbedtls &&
4086     die "OpenSSL and mbedTLS must not be enabled at the same time."
4087
4088 # Disable all the library-specific components if the library itself
4089 # is disabled, see AVCODEC_LIST and following _LIST variables.
4090
4091 disable_components(){
4092     disabled ${1} && disable $(
4093         eval components="\$$(toupper ${1})_COMPONENTS"
4094         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
4095     )
4096 }
4097
4098 map 'disable_components $v' $LIBRARY_LIST
4099
4100 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
4101 set >> $logfile
4102
4103 test -n "$valgrind" && toolchain="valgrind-memcheck"
4104
4105 enabled ossfuzz && ! echo $CFLAGS | grep -q -- "-fsanitize="  && ! echo $CFLAGS | grep -q -- "-fcoverage-mapping" &&{
4106     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
4107     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
4108 }
4109
4110 case "$toolchain" in
4111     *-asan)
4112         cc_default="${toolchain%-asan}"
4113         add_cflags  -fsanitize=address
4114         add_ldflags -fsanitize=address
4115     ;;
4116     *-msan)
4117         cc_default="${toolchain%-msan}"
4118         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
4119         add_ldflags -fsanitize=memory
4120     ;;
4121     *-tsan)
4122         cc_default="${toolchain%-tsan}"
4123         add_cflags  -fsanitize=thread
4124         add_ldflags -fsanitize=thread
4125         case "$toolchain" in
4126             gcc-tsan)
4127                 add_cflags  -fPIC
4128                 add_ldflags -fPIC
4129                 ;;
4130         esac
4131     ;;
4132     *-usan)
4133         cc_default="${toolchain%-usan}"
4134         add_cflags  -fsanitize=undefined
4135         add_ldflags -fsanitize=undefined
4136     ;;
4137     valgrind-*)
4138         target_exec_default="valgrind"
4139         case "$toolchain" in
4140             valgrind-massif)
4141                 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"
4142                 ;;
4143             valgrind-memcheck)
4144                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
4145                 ;;
4146         esac
4147     ;;
4148     msvc)
4149         # Check whether the current MSVC version needs the C99 converter.
4150         # From MSVC 2013 (compiler major version 18) onwards, it does actually
4151         # support enough of C99 to build ffmpeg. Default to the new
4152         # behaviour if the regexp was unable to match anything, since this
4153         # successfully parses the version number of existing supported
4154         # versions that require the converter (MSVC 2010 and 2012).
4155         cl_major_ver=$(cl.exe 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
4156         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
4157             cc_default="cl.exe"
4158             cxx_default="cl.exe"
4159         else
4160             die "Unsupported MSVC version (2013 or newer required)"
4161         fi
4162         ld_default="$source_path/compat/windows/mslink"
4163         nm_default="dumpbin.exe -symbols"
4164         ar_default="lib.exe"
4165         case "$arch" in
4166         aarch64|arm64)
4167             as_default="armasm64.exe"
4168             ;;
4169         arm*)
4170             as_default="armasm.exe"
4171             ;;
4172         esac
4173         target_os_default="win32"
4174         # Use a relative path for TMPDIR. This makes sure all the
4175         # ffconf temp files are written with a relative path, avoiding
4176         # issues with msys/win32 path conversion for MSVC parameters
4177         # such as -Fo<file> or -out:<file>.
4178         TMPDIR=.
4179     ;;
4180     icl)
4181         cc_default="icl"
4182         ld_default="xilink"
4183         nm_default="dumpbin -symbols"
4184         ar_default="xilib"
4185         target_os_default="win32"
4186         TMPDIR=.
4187     ;;
4188     gcov)
4189         add_cflags  -fprofile-arcs -ftest-coverage
4190         add_ldflags -fprofile-arcs -ftest-coverage
4191     ;;
4192     llvm-cov)
4193         add_cflags -fprofile-arcs -ftest-coverage
4194         add_ldflags --coverage
4195     ;;
4196     hardened)
4197         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
4198         add_cflags   -fno-strict-overflow -fstack-protector-all
4199         add_ldflags  -Wl,-z,relro -Wl,-z,now
4200         add_cflags   -fPIE
4201         add_ldexeflags -fPIE -pie
4202     ;;
4203     ?*)
4204         die "Unknown toolchain $toolchain"
4205     ;;
4206 esac
4207
4208 if test -n "$cross_prefix"; then
4209     test -n "$arch" && test -n "$target_os" ||
4210         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
4211     enable cross_compile
4212 fi
4213
4214 set_default target_os
4215 if test "$target_os" = android; then
4216     cc_default="clang"
4217 fi
4218
4219 ar_default="${cross_prefix}${ar_default}"
4220 cc_default="${cross_prefix}${cc_default}"
4221 cxx_default="${cross_prefix}${cxx_default}"
4222 nm_default="${cross_prefix}${nm_default}"
4223 pkg_config_default="${cross_prefix}${pkg_config_default}"
4224 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
4225     ranlib_default="${cross_prefix}${ranlib_default} -D"
4226 else
4227     ranlib_default="${cross_prefix}${ranlib_default}"
4228 fi
4229 strip_default="${cross_prefix}${strip_default}"
4230 windres_default="${cross_prefix}${windres_default}"
4231
4232 sysinclude_default="${sysroot}/usr/include"
4233
4234 if enabled cuda_sdk; then
4235     warn "Option --enable-cuda-sdk is deprecated. Use --enable-cuda-nvcc instead."
4236     enable cuda_nvcc
4237 fi
4238
4239 if enabled cuda_nvcc; then
4240     nvcc_default="nvcc"
4241     nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
4242 else
4243     nvcc_default="clang"
4244     nvccflags_default="--cuda-gpu-arch=sm_30 -O2"
4245     NVCC_C=""
4246 fi
4247
4248 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
4249     target_exec x86asmexe nvcc
4250 enabled cross_compile || host_cc_default=$cc
4251 set_default host_cc
4252
4253 pkg_config_fail_message=""
4254 if ! $pkg_config --version >/dev/null 2>&1; then
4255     warn "$pkg_config not found, library detection may fail."
4256     pkg_config=false
4257 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
4258     pkg_config_fail_message="
4259 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
4260 fi
4261
4262 if test $doxygen != $doxygen_default && \
4263   ! $doxygen --version >/dev/null 2>&1; then
4264     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
4265 fi
4266
4267 exesuf() {
4268     case $1 in
4269         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
4270     esac
4271 }
4272
4273 EXESUF=$(exesuf $target_os)
4274 HOSTEXESUF=$(exesuf $host_os)
4275
4276 # set temporary file name
4277 : ${TMPDIR:=$TEMPDIR}
4278 : ${TMPDIR:=$TMP}
4279 : ${TMPDIR:=/tmp}
4280
4281 if [ -n "$tempprefix" ] ; then
4282     mktemp(){
4283         tmpname="$tempprefix.${HOSTNAME}.${UID}"
4284         echo "$tmpname"
4285         mkdir "$tmpname"
4286     }
4287 elif ! test_cmd mktemp -u XXXXXX; then
4288     # simple replacement for missing mktemp
4289     # NOT SAFE FOR GENERAL USE
4290     mktemp(){
4291         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
4292         echo "$tmpname"
4293         mkdir "$tmpname"
4294     }
4295 fi
4296
4297 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
4298     die "Unable to create temporary directory in $TMPDIR."
4299
4300 tmpfile(){
4301     tmp="${FFTMPDIR}/test"$2
4302     (set -C; exec > $tmp) 2> /dev/null ||
4303         die "Unable to create temporary file in $FFTMPDIR."
4304     eval $1=$tmp
4305 }
4306
4307 trap 'rm -rf -- "$FFTMPDIR"' EXIT
4308 trap 'exit 2' INT
4309
4310 tmpfile TMPASM .asm
4311 tmpfile TMPC   .c
4312 tmpfile TMPCPP .cpp
4313 tmpfile TMPE   $EXESUF
4314 tmpfile TMPH   .h
4315 tmpfile TMPM   .m
4316 tmpfile TMPCU  .cu
4317 tmpfile TMPO   .o
4318 tmpfile TMPS   .S
4319 tmpfile TMPSH  .sh
4320 tmpfile TMPV   .ver
4321
4322 unset -f mktemp
4323
4324 chmod +x $TMPE
4325
4326 # make sure we can execute files in $TMPDIR
4327 cat > $TMPSH 2>> $logfile <<EOF
4328 #! /bin/sh
4329 EOF
4330 chmod +x $TMPSH >> $logfile 2>&1
4331 if ! $TMPSH >> $logfile 2>&1; then
4332     cat <<EOF
4333 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
4334 variable to another directory and make sure that it is not mounted noexec.
4335 EOF
4336     die "Sanity test failed."
4337 fi
4338
4339 armasm_flags(){
4340     for flag; do
4341         case $flag in
4342             # Filter out MSVC cl.exe options from cflags that shouldn't
4343             # be passed to gas-preprocessor
4344             -M[TD]*)                                            ;;
4345             *)                  echo $flag                      ;;
4346         esac
4347    done
4348 }
4349
4350 cparser_flags(){
4351     for flag; do
4352         case $flag in
4353             -Wno-switch)             echo -Wno-switch-enum ;;
4354             -Wno-format-zero-length) ;;
4355             -Wdisabled-optimization) ;;
4356             -Wno-pointer-sign)       echo -Wno-other ;;
4357             *)                       echo $flag ;;
4358         esac
4359     done
4360 }
4361
4362 msvc_common_flags(){
4363     for flag; do
4364         case $flag in
4365             # In addition to specifying certain flags under the compiler
4366             # specific filters, they must be specified here as well or else the
4367             # generic catch all at the bottom will print the original flag.
4368             -Wall)                ;;
4369             -Wextra)              ;;
4370             -std=c99)             ;;
4371             # Common flags
4372             -fomit-frame-pointer) ;;
4373             -g)                   echo -Z7 ;;
4374             -fno-math-errno)      ;;
4375             -fno-common)          ;;
4376             -fno-signed-zeros)    ;;
4377             -fPIC)                ;;
4378             -mthumb)              ;;
4379             -march=*)             ;;
4380             -lz)                  echo zlib.lib ;;
4381             -lx264)               echo libx264.lib ;;
4382             -lstdc++)             ;;
4383             -l*)                  echo ${flag#-l}.lib ;;
4384             -LARGEADDRESSAWARE)   echo $flag ;;
4385             -L*)                  echo -libpath:${flag#-L} ;;
4386             *)                    echo $flag ;;
4387         esac
4388     done
4389 }
4390
4391 msvc_flags(){
4392     msvc_common_flags "$@"
4393     for flag; do
4394         case $flag in
4395             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4396                                        -wd4554 ;;
4397             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4398                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4399                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4400                                        -wd4307 \
4401                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4402         esac
4403     done
4404 }
4405
4406 icl_flags(){
4407     msvc_common_flags "$@"
4408     for flag; do
4409         case $flag in
4410             # Despite what Intel's documentation says -Wall, which is supported
4411             # on Windows, does enable remarks so disable them here.
4412             -Wall)                echo $flag -Qdiag-disable:remark ;;
4413             -std=c99)             echo -Qstd=c99 ;;
4414             -flto)                echo -ipo ;;
4415         esac
4416     done
4417 }
4418
4419 icc_flags(){
4420     for flag; do
4421         case $flag in
4422             -flto)                echo -ipo ;;
4423             *)                    echo $flag ;;
4424         esac
4425     done
4426 }
4427
4428 suncc_flags(){
4429     for flag; do
4430         case $flag in
4431             -march=*|-mcpu=*)
4432                 case "${flag#*=}" in
4433                     native)                   echo -xtarget=native       ;;
4434                     v9|niagara)               echo -xarch=sparc          ;;
4435                     ultrasparc)               echo -xarch=sparcvis       ;;
4436                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4437                     i586|pentium)             echo -xchip=pentium        ;;
4438                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4439                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4440                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4441                     pentium4*)          echo -xtarget=pentium4           ;;
4442                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4443                     *-sse3)             echo -xarch=sse3                 ;;
4444                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4445                     bonnell)                   echo -xarch=ssse3         ;;
4446                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4447                     westmere)                  echo -xtarget=westmere    ;;
4448                     silvermont)                echo -xarch=sse4_2        ;;
4449                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4450                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4451                                                echo -xarch=avx           ;;
4452                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4453                     btver1)                    echo -xarch=amdsse4a      ;;
4454                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4455                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4456                     k8|opteron|athlon64|athlon-fx)
4457                                                echo -xarch=sse2a         ;;
4458                     athlon*)                   echo -xarch=pentium_proa  ;;
4459                 esac
4460                 ;;
4461             -std=c99)             echo -xc99              ;;
4462             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4463             -fPIC)                echo -KPIC -xcode=pic32 ;;
4464             -W*,*)                echo $flag              ;;
4465             -f*-*|-W*|-mimpure-text)                      ;;
4466             -shared)              echo -G                 ;;
4467             *)                    echo $flag              ;;
4468         esac
4469     done
4470 }
4471
4472 probe_cc(){
4473     pfx=$1
4474     _cc=$2
4475     first=$3
4476
4477     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4478     unset _ld_o _ldflags _ld_lib _ld_path
4479     unset _depflags _DEPCMD _DEPFLAGS
4480     _flags_filter=echo
4481
4482     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4483         true # no-op to avoid reading stdin in following checks
4484     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4485         _type=llvm_gcc
4486         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4487         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4488         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4489         _cflags_speed='-O3'
4490         _cflags_size='-Os'
4491     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4492         _type=gcc
4493         gcc_version=$($_cc --version | head -n1)
4494         gcc_basever=$($_cc -dumpversion)
4495         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4496         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4497         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4498         case $gcc_basever in
4499             2) ;;
4500             2.*) ;;
4501             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4502         esac
4503         if [ "$first" = true ]; then
4504             case $gcc_basever in
4505                 4.2*)
4506                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4507             esac
4508         fi
4509         _cflags_speed='-O3'
4510         _cflags_size='-Os'
4511     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4512         _type=icc
4513         _ident=$($_cc --version | head -n1)
4514         _depflags='-MMD'
4515         _cflags_speed='-O3'
4516         _cflags_size='-Os'
4517         _cflags_noopt='-O1'
4518         _flags_filter=icc_flags
4519     elif $_cc -v 2>&1 | grep -q xlc; then
4520         _type=xlc
4521         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4522         _cflags_speed='-O5'
4523         _cflags_size='-O5 -qcompact'
4524     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4525         test -d "$sysroot" || die "No valid sysroot specified."
4526         _type=armcc
4527         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4528         armcc_conf="$PWD/armcc.conf"
4529         $_cc --arm_linux_configure                 \
4530              --arm_linux_config_file="$armcc_conf" \
4531              --configure_sysroot="$sysroot"        \
4532              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4533              die "Error creating armcc configuration file."
4534         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4535         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4536         as_default="${cross_prefix}gcc"
4537         _depflags='-MMD'
4538         _cflags_speed='-O3'
4539         _cflags_size='-Os'
4540     elif $_cc -v 2>&1 | grep -q clang && ! $_cc -? > /dev/null 2>&1; then
4541         _type=clang
4542         _ident=$($_cc --version 2>/dev/null | head -n1)
4543         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4544         _cflags_speed='-O3'
4545         _cflags_size='-Oz'
4546     elif $_cc -V 2>&1 | grep -q Sun; then
4547         _type=suncc
4548         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4549         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4550         _DEPFLAGS='-xM1 -xc99'
4551         _ldflags='-std=c99'
4552         _cflags_speed='-O5'
4553         _cflags_size='-O5 -xspace'
4554         _flags_filter=suncc_flags
4555     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4556         _type=pathscale
4557         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4558         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4559         _cflags_speed='-O2'
4560         _cflags_size='-Os'
4561         _flags_filter='filter_out -Wdisabled-optimization'
4562     elif $_cc -v 2>&1 | grep -q Open64; then
4563         _type=open64
4564         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4565         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4566         _cflags_speed='-O2'
4567         _cflags_size='-Os'
4568         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4569     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4570         _type=armasm
4571         _ident=$($_cc | head -n1)
4572         # 4509: "This form of conditional instruction is deprecated"
4573         _flags="-nologo -ignore 4509"
4574         _flags_filter=armasm_flags
4575     elif $_cc 2>&1 | grep -q Intel; then
4576         _type=icl
4577         _ident=$($_cc 2>&1 | head -n1)
4578         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4579         # Not only is O3 broken on 13.x+ but it is slower on all previous
4580         # versions (tested) as well.
4581         _cflags_speed="-O2"
4582         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4583         if $_cc 2>&1 | grep -q Linker; then
4584             _ld_o='-out:$@'
4585         else
4586             _ld_o='-Fe$@'
4587         fi
4588         _cc_o='-Fo$@'
4589         _cc_e='-P'
4590         _flags_filter=icl_flags
4591         _ld_lib='lib%.a'
4592         _ld_path='-libpath:'
4593         # -Qdiag-error to make icl error when seeing certain unknown arguments
4594         _flags='-nologo -Qdiag-error:4044,10157'
4595         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4596         # with MSVC which enables it by default.
4597         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4598         disable stripping
4599     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4600         # lld can emulate multiple different linkers; in ms link.exe mode,
4601         # the -? parameter gives the help output which contains an identifyable
4602         # string, while it gives an error in other modes.
4603         _type=lld-link
4604         # The link.exe mode doesn't have a switch for getting the version,
4605         # but we can force it back to gnu mode and get the version from there.
4606         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4607         _ld_o='-out:$@'
4608         _flags_filter=msvc_flags
4609         _ld_lib='lib%.a'
4610         _ld_path='-libpath:'
4611     elif $_cc -nologo- 2>&1 | grep -q Microsoft || { $_cc -v 2>&1 | grep -q clang && $_cc -? > /dev/null 2>&1; }; then
4612         _type=msvc
4613         _ident=$($_cc 2>&1 | head -n1 | tr -d '\r')
4614         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4615         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4616         _cflags_speed="-O2"
4617         _cflags_size="-O1"
4618         _cflags_noopt="-O1"
4619         if $_cc -nologo- 2>&1 | grep -q Linker; then
4620             _ld_o='-out:$@'
4621         else
4622             _ld_o='-Fe$@'
4623         fi
4624         _cc_o='-Fo$@'
4625         _cc_e='-P -Fi$@'
4626         _flags_filter=msvc_flags
4627         _ld_lib='lib%.a'
4628         _ld_path='-libpath:'
4629         _flags='-nologo'
4630         disable stripping
4631     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4632         _type=cparser
4633         _ident=$($_cc --version | head -n1)
4634         _depflags='-MMD'
4635         _cflags_speed='-O4'
4636         _cflags_size='-O2'
4637         _flags_filter=cparser_flags
4638     fi
4639
4640     eval ${pfx}_type=\$_type
4641     eval ${pfx}_ident=\$_ident
4642 }
4643
4644 set_ccvars(){
4645     eval ${1}_C=\${_cc_c-\${${1}_C}}
4646     eval ${1}_E=\${_cc_e-\${${1}_E}}
4647     eval ${1}_O=\${_cc_o-\${${1}_O}}
4648
4649     if [ -n "$_depflags" ]; then
4650         eval ${1}_DEPFLAGS=\$_depflags
4651     else
4652         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4653         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4654         eval DEP${1}FLAGS=\$_flags
4655     fi
4656 }
4657
4658 probe_cc cc "$cc" "true"
4659 cflags_filter=$_flags_filter
4660 cflags_speed=$_cflags_speed
4661 cflags_size=$_cflags_size
4662 cflags_noopt=$_cflags_noopt
4663 add_cflags $_flags $_cflags
4664 cc_ldflags=$_ldflags
4665 set_ccvars CC
4666 set_ccvars CXX
4667
4668 probe_cc hostcc "$host_cc"
4669 host_cflags_filter=$_flags_filter
4670 host_cflags_speed=$_cflags_speed
4671 add_host_cflags  $_flags $_cflags
4672 set_ccvars HOSTCC
4673
4674 test -n "$cc_type" && enable $cc_type ||
4675     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4676
4677 : ${as_default:=$cc}
4678 : ${objcc_default:=$cc}
4679 : ${dep_cc_default:=$cc}
4680 : ${ld_default:=$cc}
4681 : ${host_ld_default:=$host_cc}
4682 set_default ar as objcc dep_cc ld ln_s host_ld windres
4683
4684 probe_cc as "$as"
4685 asflags_filter=$_flags_filter
4686 add_asflags $_flags $_cflags
4687 set_ccvars AS
4688
4689 probe_cc objcc "$objcc"
4690 objcflags_filter=$_flags_filter
4691 add_objcflags $_flags $_cflags
4692 set_ccvars OBJC
4693
4694 probe_cc ld "$ld"
4695 ldflags_filter=$_flags_filter
4696 add_ldflags $_flags $_ldflags
4697 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4698 LD_O=${_ld_o-$LD_O}
4699 LD_LIB=${_ld_lib-$LD_LIB}
4700 LD_PATH=${_ld_path-$LD_PATH}
4701
4702 probe_cc hostld "$host_ld"
4703 host_ldflags_filter=$_flags_filter
4704 add_host_ldflags $_flags $_ldflags
4705 HOSTLD_O=${_ld_o-$HOSTLD_O}
4706
4707 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4708     probe_cc depcc "$dep_cc"
4709     CCDEP=${_DEPCMD:-$DEPCMD}
4710     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4711     DEPCCFLAGS=$_flags
4712 fi
4713
4714 if $ar 2>&1 | grep -q Microsoft; then
4715     arflags="-nologo"
4716     ar_o='-out:$@'
4717 elif $ar 2>&1 | grep -q "\[D\] "; then
4718     arflags="rcD"
4719     ar_o='$@'
4720 else
4721     arflags="rc"
4722     ar_o='$@'
4723 fi
4724
4725 add_cflags $extra_cflags
4726 add_cxxflags $extra_cxxflags
4727 add_objcflags $extra_objcflags
4728 add_asflags $extra_cflags
4729
4730 if test -n "$sysroot"; then
4731     case "$cc_type" in
4732         gcc|llvm_gcc|clang)
4733             add_cppflags --sysroot="$sysroot"
4734             add_ldflags --sysroot="$sysroot"
4735         ;;
4736     esac
4737 fi
4738
4739 if test "$cpu" = host; then
4740     enabled cross_compile &&
4741         die "--cpu=host makes no sense when cross-compiling."
4742
4743     case "$cc_type" in
4744         gcc|llvm_gcc)
4745             check_native(){
4746                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4747                 sed -n "/cc1.*$1=/{
4748                             s/.*$1=\\([^ ]*\\).*/\\1/
4749                             p
4750                             q
4751                         }" $TMPE
4752             }
4753             cpu=$(check_native -march || check_native -mcpu)
4754         ;;
4755         clang)
4756             check_native(){
4757                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4758                 sed -n "/cc1.*-target-cpu /{
4759                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4760                             p
4761                             q
4762                         }" $TMPE
4763             }
4764             cpu=$(check_native -march)
4765         ;;
4766     esac
4767
4768     test "${cpu:-host}" = host &&
4769         die "--cpu=host not supported with compiler $cc"
4770 fi
4771
4772 # Deal with common $arch aliases
4773 case "$arch" in
4774     aarch64|arm64)
4775         arch="aarch64"
4776     ;;
4777     arm*|iPad*|iPhone*)
4778         arch="arm"
4779     ;;
4780     mips*|IP*)
4781         case "$arch" in
4782         *el)
4783             add_cppflags -EL
4784             add_ldflags -EL
4785         ;;
4786         *eb)
4787             add_cppflags -EB
4788             add_ldflags -EB
4789         ;;
4790         esac
4791         arch="mips"
4792     ;;
4793     parisc*|hppa*)
4794         arch="parisc"
4795     ;;
4796     "Power Macintosh"|ppc*|powerpc*)
4797         arch="ppc"
4798     ;;
4799     s390|s390x)
4800         arch="s390"
4801     ;;
4802     sh4|sh)
4803         arch="sh4"
4804     ;;
4805     sun4*|sparc*)
4806         arch="sparc"
4807     ;;
4808     tilegx|tile-gx)
4809         arch="tilegx"
4810     ;;
4811     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4812         arch="x86"
4813     ;;
4814 esac
4815
4816 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4817 enable $arch
4818
4819 # Add processor-specific flags
4820 if enabled aarch64; then
4821
4822     case $cpu in
4823         armv*)
4824             cpuflags="-march=$cpu"
4825         ;;
4826         *)
4827             cpuflags="-mcpu=$cpu"
4828         ;;
4829     esac
4830
4831 elif enabled alpha; then
4832
4833     cpuflags="-mcpu=$cpu"
4834
4835 elif enabled arm; then
4836
4837     check_arm_arch() {
4838         test_cpp_condition stddef.h \
4839             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4840             $cpuflags
4841     }
4842
4843     probe_arm_arch() {
4844         if   check_arm_arch 4;        then echo armv4
4845         elif check_arm_arch 4T;       then echo armv4t
4846         elif check_arm_arch 5;        then echo armv5
4847         elif check_arm_arch 5E;       then echo armv5e
4848         elif check_arm_arch 5T;       then echo armv5t
4849         elif check_arm_arch 5TE;      then echo armv5te
4850         elif check_arm_arch 5TEJ;     then echo armv5te
4851         elif check_arm_arch 6;        then echo armv6
4852         elif check_arm_arch 6J;       then echo armv6j
4853         elif check_arm_arch 6K;       then echo armv6k
4854         elif check_arm_arch 6Z;       then echo armv6z
4855         elif check_arm_arch 6KZ;      then echo armv6zk
4856         elif check_arm_arch 6ZK;      then echo armv6zk
4857         elif check_arm_arch 6T2;      then echo armv6t2
4858         elif check_arm_arch 7;        then echo armv7
4859         elif check_arm_arch 7A  7_A;  then echo armv7-a
4860         elif check_arm_arch 7S;       then echo armv7-a
4861         elif check_arm_arch 7R  7_R;  then echo armv7-r
4862         elif check_arm_arch 7M  7_M;  then echo armv7-m
4863         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4864         elif check_arm_arch 8A  8_A;  then echo armv8-a
4865         fi
4866     }
4867
4868     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4869
4870     case $cpu in
4871         armv*)
4872             cpuflags="-march=$cpu"
4873             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4874         ;;
4875         *)
4876             cpuflags="-mcpu=$cpu"
4877             case $cpu in
4878                 cortex-a*)                               subarch=armv7a  ;;
4879                 cortex-r*)                               subarch=armv7r  ;;
4880                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4881                 arm11*)                                  subarch=armv6   ;;
4882                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4883                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4884                 *)                             subarch=$(probe_arm_arch) ;;
4885             esac
4886         ;;
4887     esac
4888
4889     case "$subarch" in
4890         armv5t*)    enable fast_clz                ;;
4891         armv[6-8]*)
4892             enable fast_clz
4893             disabled fast_unaligned || enable fast_unaligned
4894             ;;
4895     esac
4896
4897 elif enabled avr32; then
4898
4899     case $cpu in
4900         ap7[02]0[0-2])
4901             subarch="avr32_ap"
4902             cpuflags="-mpart=$cpu"
4903         ;;
4904         ap)
4905             subarch="avr32_ap"
4906             cpuflags="-march=$cpu"
4907         ;;
4908         uc3[ab]*)
4909             subarch="avr32_uc"
4910             cpuflags="-mcpu=$cpu"
4911         ;;
4912         uc)
4913             subarch="avr32_uc"
4914             cpuflags="-march=$cpu"
4915         ;;
4916     esac
4917
4918 elif enabled bfin; then
4919
4920     cpuflags="-mcpu=$cpu"
4921
4922 elif enabled mips; then
4923
4924     cpuflags="-march=$cpu"
4925
4926     if [ "$cpu" != "generic" ]; then
4927         disable mips32r2
4928         disable mips32r5
4929         disable mips64r2
4930         disable mips32r6
4931         disable mips64r6
4932         disable loongson2
4933         disable loongson3
4934
4935         case $cpu in
4936             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4937                 enable mips32r2
4938                 disable msa
4939             ;;
4940             p5600|i6400|p6600)
4941                 disable mipsdsp
4942                 disable mipsdspr2
4943             ;;
4944             loongson*)
4945                 enable loongson2
4946                 enable loongson3
4947                 enable local_aligned
4948                 enable simd_align_16
4949                 enable fast_64bit
4950                 enable fast_clz
4951                 enable fast_cmov
4952                 enable fast_unaligned
4953                 disable aligned_stack
4954                 disable mipsdsp
4955                 disable mipsdspr2
4956                 # When gcc version less than 5.3.0, add -fno-expensive-optimizations flag.
4957                 if [ $cc == gcc ]; then
4958                     gcc_version=$(gcc -dumpversion)
4959                     if [ "$(echo "$gcc_version 5.3.0" | tr " " "\n" | sort -rV | head -n 1)" == "$gcc_version" ]; then
4960                         expensive_optimization_flag=""
4961                     else
4962                         expensive_optimization_flag="-fno-expensive-optimizations"
4963                     fi
4964                 fi
4965                 case $cpu in
4966                     loongson3*)
4967                         cpuflags="-march=loongson3a -mhard-float $expensive_optimization_flag"
4968                     ;;
4969                     loongson2e)
4970                         cpuflags="-march=loongson2e -mhard-float $expensive_optimization_flag"
4971                     ;;
4972                     loongson2f)
4973                         cpuflags="-march=loongson2f -mhard-float $expensive_optimization_flag"
4974                     ;;
4975                 esac
4976             ;;
4977             *)
4978                 # Unknown CPU. Disable everything.
4979                 warn "unknown CPU. Disabling all MIPS optimizations."
4980                 disable mipsfpu
4981                 disable mipsdsp
4982                 disable mipsdspr2
4983                 disable msa
4984                 disable mmi
4985             ;;
4986         esac
4987
4988         case $cpu in
4989             24kc)
4990                 disable mipsfpu
4991                 disable mipsdsp
4992                 disable mipsdspr2
4993             ;;
4994             24kf*)
4995                 disable mipsdsp
4996                 disable mipsdspr2
4997             ;;
4998             24kec|34kc|1004kc)
4999                 disable mipsfpu
5000                 disable mipsdspr2
5001             ;;
5002             24kef*|34kf*|1004kf*)
5003                 disable mipsdspr2
5004             ;;
5005             74kc)
5006                 disable mipsfpu
5007             ;;
5008             p5600)
5009                 enable mips32r5
5010                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
5011             ;;
5012             i6400)
5013                 enable mips64r6
5014                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
5015             ;;
5016             p6600)
5017                 enable mips64r6
5018                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
5019             ;;
5020         esac
5021     else
5022         # We do not disable anything. Is up to the user to disable the unwanted features.
5023         warn 'generic cpu selected'
5024     fi
5025
5026 elif enabled ppc; then
5027
5028     disable ldbrx
5029
5030     case $(tolower $cpu) in
5031         601|ppc601|powerpc601)
5032             cpuflags="-mcpu=601"
5033             disable altivec
5034         ;;
5035         603*|ppc603*|powerpc603*)
5036             cpuflags="-mcpu=603"
5037             disable altivec
5038         ;;
5039         604*|ppc604*|powerpc604*)
5040             cpuflags="-mcpu=604"
5041             disable altivec
5042         ;;
5043         g3|75*|ppc75*|powerpc75*)
5044             cpuflags="-mcpu=750"
5045             disable altivec
5046         ;;
5047         g4|745*|ppc745*|powerpc745*)
5048             cpuflags="-mcpu=7450"
5049             disable vsx
5050         ;;
5051         74*|ppc74*|powerpc74*)
5052             cpuflags="-mcpu=7400"
5053             disable vsx
5054         ;;
5055         g5|970|ppc970|powerpc970)
5056             cpuflags="-mcpu=970"
5057             disable vsx
5058         ;;
5059         power[3-6]*)
5060             cpuflags="-mcpu=$cpu"
5061             disable vsx
5062         ;;
5063         power[7-8]*)
5064             cpuflags="-mcpu=$cpu"
5065         ;;
5066         cell)
5067             cpuflags="-mcpu=cell"
5068             enable ldbrx
5069             disable vsx
5070         ;;
5071         e500mc)
5072             cpuflags="-mcpu=e500mc"
5073             disable altivec
5074         ;;
5075         e500v2)
5076             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
5077             disable altivec
5078             disable dcbzl
5079         ;;
5080         e500)
5081             cpuflags="-mcpu=8540 -mhard-float"
5082             disable altivec
5083             disable dcbzl
5084         ;;
5085     esac
5086
5087 elif enabled sparc; then
5088
5089     case $cpu in
5090         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
5091             cpuflags="-mcpu=$cpu"
5092         ;;
5093         ultrasparc*|niagara[234])
5094             cpuflags="-mcpu=$cpu"
5095         ;;
5096     esac
5097
5098 elif enabled x86; then
5099
5100     case $cpu in
5101         i[345]86|pentium)
5102             cpuflags="-march=$cpu"
5103             disable i686
5104             disable mmx
5105         ;;
5106         # targets that do NOT support nopl and conditional mov (cmov)
5107         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
5108             cpuflags="-march=$cpu"
5109             disable i686
5110         ;;
5111         # targets that do support nopl and conditional mov (cmov)
5112         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
5113         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
5114         |amdfam10|barcelona|b[dt]ver*|znver*)
5115             cpuflags="-march=$cpu"
5116             enable i686
5117             enable fast_cmov
5118         ;;
5119         # targets that do support conditional mov but on which it's slow
5120         pentium4|pentium4m|prescott|nocona)
5121             cpuflags="-march=$cpu"
5122             enable i686
5123             disable fast_cmov
5124         ;;
5125     esac
5126
5127 fi
5128
5129 if [ "$cpu" != generic ]; then
5130     add_cflags  $cpuflags
5131     add_asflags $cpuflags
5132     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
5133 fi
5134
5135 # compiler sanity check
5136 test_exec <<EOF
5137 int main(void){ return 0; }
5138 EOF
5139 if test "$?" != 0; then
5140     echo "$cc is unable to create an executable file."
5141     if test -z "$cross_prefix" && ! enabled cross_compile ; then
5142         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
5143         echo "Only do this if you know what cross compiling means."
5144     fi
5145     die "C compiler test failed."
5146 fi
5147
5148 add_cppflags -D_ISOC99_SOURCE
5149 add_cxxflags -D__STDC_CONSTANT_MACROS
5150 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
5151
5152 # some compilers silently accept -std=c11, so we also need to check that the
5153 # version macro is defined properly
5154 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
5155     add_cflags -std=c11 ||
5156     check_cflags -std=c99
5157
5158 check_cppflags -D_FILE_OFFSET_BITS=64
5159 check_cppflags -D_LARGEFILE_SOURCE
5160
5161 add_host_cppflags -D_ISOC99_SOURCE
5162 check_host_cflags -std=c99
5163 check_host_cflags -Wall
5164 check_host_cflags $host_cflags_speed
5165
5166 check_64bit(){
5167     arch32=$1
5168     arch64=$2
5169     expr=${3:-'sizeof(void *) > 4'}
5170     test_code cc "" "int test[2*($expr) - 1]" &&
5171         subarch=$arch64 || subarch=$arch32
5172     enable $subarch
5173 }
5174
5175 case "$arch" in
5176     aarch64|alpha|ia64)
5177         enabled shared && enable_weak pic
5178     ;;
5179     mips)
5180         check_64bit mips mips64 '_MIPS_SIM > 1'
5181         enabled shared && enable_weak pic
5182     ;;
5183     parisc)
5184         check_64bit parisc parisc64
5185         enabled shared && enable_weak pic
5186     ;;
5187     ppc)
5188         check_64bit ppc ppc64
5189         enabled shared && enable_weak pic
5190     ;;
5191     s390)
5192         check_64bit s390 s390x
5193         enabled shared && enable_weak pic
5194     ;;
5195     sparc)
5196         check_64bit sparc sparc64
5197         enabled shared && enable_weak pic
5198     ;;
5199     x86)
5200         check_64bit x86_32 x86_64
5201         # Treat x32 as x64 for now. Note it also needs pic if shared
5202         test "$subarch" = "x86_32" && test_cpp_condition stddef.h 'defined(__x86_64__)' &&
5203             subarch=x86_64 && enable x86_64 && disable x86_32
5204         if enabled x86_64; then
5205             enabled shared && enable_weak pic
5206             objformat=elf64
5207         fi
5208     ;;
5209 esac
5210
5211 # OS specific
5212 case $target_os in
5213     aix)
5214         SHFLAGS=-shared
5215         add_cppflags '-I\$(SRC_PATH)/compat/aix'
5216         enabled shared && add_ldflags -Wl,-brtl
5217         arflags='-Xany -r -c'
5218         striptype=""
5219         ;;
5220     android)
5221         disable symver
5222         enable section_data_rel_ro
5223         add_cflags -fPIE
5224         add_ldexeflags -fPIE -pie
5225         SLIB_INSTALL_NAME='$(SLIBNAME)'
5226         SLIB_INSTALL_LINKS=
5227         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
5228         ;;
5229     haiku)
5230         prefix_default="/boot/common"
5231         network_extralibs="-lnetwork"
5232         host_extralibs=
5233         ;;
5234     sunos)
5235         SHFLAGS='-shared -Wl,-h,$$(@F)'
5236         enabled x86 && append SHFLAGS -mimpure-text
5237         network_extralibs="-lsocket -lnsl"
5238         add_cppflags -D__EXTENSIONS__
5239         # When using suncc to build, the Solaris linker will mark
5240         # an executable with each instruction set encountered by
5241         # the Solaris assembler.  As our libraries contain their own
5242         # guards for processor-specific code, instead suppress
5243         # generation of the HWCAPS ELF section on Solaris x86 only.
5244         enabled_all suncc x86 &&
5245             echo "hwcap_1 = OVERRIDE;" > mapfile &&
5246             add_ldflags -Wl,-M,mapfile
5247         nm_default='nm -P -g'
5248         striptype=""
5249         version_script='-M'
5250         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
5251         ;;
5252     netbsd)
5253         disable symver
5254         oss_indev_extralibs="-lossaudio"
5255         oss_outdev_extralibs="-lossaudio"
5256         enabled gcc || check_ldflags -Wl,-zmuldefs
5257         ;;
5258     openbsd|bitrig)
5259         disable symver
5260         striptype=""
5261         SHFLAGS='-shared'
5262         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
5263         SLIB_INSTALL_LINKS=
5264         oss_indev_extralibs="-lossaudio"
5265         oss_outdev_extralibs="-lossaudio"
5266         ;;
5267     dragonfly)
5268         disable symver
5269         ;;
5270     freebsd)
5271         ;;
5272     bsd/os)
5273         add_extralibs -lpoll -lgnugetopt
5274         strip="strip -d"
5275         ;;
5276     darwin)
5277         enabled ppc && add_asflags -force_cpusubtype_ALL
5278         install_name_dir_default='$(SHLIBDIR)'
5279         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
5280         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
5281         strip="${strip} -x"
5282         add_ldflags -Wl,-dynamic,-search_paths_first
5283         check_cflags -Werror=partial-availability
5284         SLIBSUF=".dylib"
5285         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
5286         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
5287         enabled x86_64 && objformat="macho64" || objformat="macho32"
5288         enabled_any pic shared x86_64 ||
5289             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
5290         check_headers dispatch/dispatch.h &&
5291             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
5292         if test -n "$sysroot"; then
5293             is_in -isysroot $cc $CPPFLAGS $CFLAGS || check_cppflags -isysroot $sysroot
5294             is_in -isysroot $ld $LDFLAGS          || check_ldflags  -isysroot $sysroot
5295         fi
5296         version_script='-exported_symbols_list'
5297         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
5298         ;;
5299     msys*)
5300         die "Native MSYS builds are discouraged, please use the MINGW environment."
5301         ;;
5302     mingw32*|mingw64*)
5303         target_os=mingw32
5304         LIBTARGET=i386
5305         if enabled x86_64; then
5306             LIBTARGET="i386:x86-64"
5307         elif enabled arm; then
5308             LIBTARGET="arm"
5309         elif enabled aarch64; then
5310             LIBTARGET="arm64"
5311         fi
5312         if enabled shared; then
5313             # Cannot build both shared and static libs when using dllimport.
5314             disable static
5315         fi
5316         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5317         enabled x86_32 && check_ldflags -Wl,--large-address-aware
5318         shlibdir_default="$bindir_default"
5319         SLIBPREF=""
5320         SLIBSUF=".dll"
5321         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5322         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5323         if test_cmd lib.exe -list; then
5324             SLIB_EXTRA_CMD=-'lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5325             if enabled x86_64; then
5326                 LIBTARGET=x64
5327             fi
5328         else
5329             SLIB_EXTRA_CMD=-'$(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
5330         fi
5331         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5332         SLIB_INSTALL_LINKS=
5333         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5334         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5335         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" AR="$(AR_CMD)" NM="$(NM_CMD)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5336         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--disable-auto-image-base $$(@:$(SLIBSUF)=.def)'
5337         enabled x86_64 && objformat="win64" || objformat="win32"
5338         dlltool="${cross_prefix}dlltool"
5339         ranlib=:
5340         enable dos_paths
5341         check_ldflags -Wl,--nxcompat,--dynamicbase
5342         # Lets work around some stupidity in binutils.
5343         # ld will strip relocations from executables even though we need them
5344         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
5345         # however ld then forgets what the entry point should be (oops) so we
5346         # have to manually (re)set it.
5347         if enabled x86_32; then
5348             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
5349         elif enabled x86_64; then
5350             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
5351             check_ldflags -Wl,--high-entropy-va # binutils 2.25
5352             # Set image base >4GB for extra entropy with HEASLR
5353             add_ldexeflags -Wl,--image-base,0x140000000
5354             append SHFLAGS -Wl,--image-base,0x180000000
5355         fi
5356         ;;
5357     win32|win64)
5358         disable symver
5359         if enabled shared; then
5360             # Link to the import library instead of the normal static library
5361             # for shared libs.
5362             LD_LIB='%.lib'
5363             # Cannot build both shared and static libs with MSVC or icl.
5364             disable static
5365         fi
5366         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
5367         shlibdir_default="$bindir_default"
5368         SLIBPREF=""
5369         SLIBSUF=".dll"
5370         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5371         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5372         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5373         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5374         SLIB_INSTALL_LINKS=
5375         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5376         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5377         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5378         enabled x86_64 && objformat="win64" || objformat="win32"
5379         ranlib=:
5380         enable dos_paths
5381         ;;
5382     cygwin*)
5383         target_os=cygwin
5384         shlibdir_default="$bindir_default"
5385         SLIBPREF="cyg"
5386         SLIBSUF=".dll"
5387         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5388         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5389         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5390         SLIB_INSTALL_LINKS=
5391         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
5392         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
5393         enabled x86_64 && objformat="win64" || objformat="win32"
5394         enable dos_paths
5395         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5396         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5397         ;;
5398     *-dos|freedos|opendos)
5399         network_extralibs="-lsocket"
5400         objformat="coff"
5401         enable dos_paths
5402         ;;
5403     linux)
5404         enable section_data_rel_ro
5405         enabled_any arm aarch64 && enable_weak linux_perf
5406         ;;
5407     irix*)
5408         target_os=irix
5409         ranlib="echo ignoring ranlib"
5410         ;;
5411     os/2*)
5412         strip="lxlite -CS"
5413         striptype=""
5414         objformat="aout"
5415         add_cppflags -D_GNU_SOURCE
5416         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
5417         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
5418         LIBSUF="_s.a"
5419         SLIBPREF=""
5420         SLIBSUF=".dll"
5421         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5422         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
5423         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
5424             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
5425             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
5426             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
5427             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
5428         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
5429             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
5430         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5431         SLIB_INSTALL_LINKS=
5432         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
5433         enable dos_paths
5434         enable_weak os2threads
5435         ;;
5436     gnu/kfreebsd)
5437         add_cppflags -D_BSD_SOURCE
5438         ;;
5439     gnu)
5440         ;;
5441     qnx)
5442         add_cppflags -D_QNX_SOURCE
5443         network_extralibs="-lsocket"
5444         ;;
5445     symbian)
5446         SLIBSUF=".dll"
5447         enable dos_paths
5448         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
5449         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
5450         add_ldflags -Wl,--target1-abs,--no-undefined \
5451                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
5452                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
5453         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
5454                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
5455                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
5456         ;;
5457     minix)
5458         ;;
5459     none)
5460         ;;
5461     *)
5462         die "Unknown OS '$target_os'."
5463         ;;
5464 esac
5465
5466 # test if creating links works
5467 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5468 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5469 mkdir "$link_dest"
5470 $ln_s "$link_dest" "$link_name"
5471 touch "$link_dest/test_file"
5472 if [ "$source_path" != "." ] && [ "$source_path" != "src" ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5473     # create link to source path
5474     [ -e src ] && rm src
5475     $ln_s "$source_path" src
5476     source_link=src
5477 else
5478     # creating directory links doesn't work
5479     # fall back to using the full source path
5480     source_link="$source_path"
5481 fi
5482 # cleanup
5483 rm -r "$link_dest"
5484 rm -r "$link_name"
5485
5486 # determine libc flavour
5487
5488 probe_libc(){
5489     pfx=$1
5490     pfx_no_=${pfx%_}
5491     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5492     if test_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5493         eval ${pfx}libc_type=uclibc
5494         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5495     elif test_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5496         eval ${pfx}libc_type=glibc
5497         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5498     # MinGW headers can be installed on Cygwin, so check for newlib first.
5499     elif test_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5500         eval ${pfx}libc_type=newlib
5501         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
5502     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5503     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5504         eval ${pfx}libc_type=mingw64
5505         if test_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5506             add_compat msvcrt/snprintf.o
5507             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5508         fi
5509         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5510         eval test \$${pfx_no_}cc_type = "gcc" &&
5511             add_${pfx}cppflags -D__printf__=__gnu_printf__
5512         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5513             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5514         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5515     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5516          test_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5517         eval ${pfx}libc_type=mingw32
5518         test_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5519             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5520             die "ERROR: MinGW32 runtime version must be >= 3.15."
5521         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5522         test_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
5523             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5524         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5525             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5526         eval test \$${pfx_no_}cc_type = "gcc" &&
5527             add_${pfx}cppflags -D__printf__=__gnu_printf__
5528         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5529     elif test_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5530         eval ${pfx}libc_type=msvcrt
5531         if test_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5532             if [ "$pfx" = host_ ]; then
5533                 add_host_cppflags -Dsnprintf=_snprintf
5534             else
5535                 add_compat strtod.o strtod=avpriv_strtod
5536                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5537                                              _snprintf=avpriv_snprintf  \
5538                                              vsnprintf=avpriv_vsnprintf
5539             fi
5540         fi
5541         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5542         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5543         # 0x601 by default unless something else is set by the user.
5544         # This can easily lead to us detecting functions only present
5545         # in such new versions and producing binaries requiring windows 7.0.
5546         # Therefore explicitly set the default to Vista unless the user has
5547         # set something else on the command line.
5548         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5549         # family. For these cases, configure is free to use any functions
5550         # found in the SDK headers by default. (Alternatively, we could force
5551         # _WIN32_WINNT to 0x0602 in that case.)
5552         test_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5553             { test_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0600; }
5554 #ifdef WINAPI_FAMILY
5555 #include <winapifamily.h>
5556 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5557 #error not desktop
5558 #endif
5559 #endif
5560 EOF
5561         if [ "$pfx" = "" ]; then
5562             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5563             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5564         fi
5565     elif test_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5566         eval ${pfx}libc_type=klibc
5567     elif test_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5568         eval ${pfx}libc_type=bionic
5569     elif test_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5570         eval ${pfx}libc_type=solaris
5571         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5572     elif test_${pfx}cpp_condition sys/version.h "defined __DJGPP__"; then
5573         eval ${pfx}libc_type=djgpp
5574         add_cppflags -U__STRICT_ANSI__
5575         add_cflags "-include $source_path/compat/djgpp/math.h"
5576         add_compat djgpp/math.o
5577     fi
5578     test_${pfx}cc <<EOF
5579 #include <time.h>
5580 void *v = localtime_r;
5581 EOF
5582 test "$?" != 0 && test_${pfx}cc -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 <<EOF && add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5583 #include <time.h>
5584 void *v = localtime_r;
5585 EOF
5586
5587     eval test -n "\${${pfx}libc_type}" && enable ${pfx}libc_${libc_type}
5588 }
5589
5590 probe_libc
5591 probe_libc host_
5592
5593 # hacks for compiler/libc/os combinations
5594
5595 case $libc_type in
5596     bionic)
5597         add_compat strtod.o strtod=avpriv_strtod
5598         ;;
5599 esac
5600
5601 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5602     add_cppflags '-I\$(SRC_PATH)/compat/float'
5603
5604 test_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5605
5606 set_default libdir
5607 : ${shlibdir_default:="$libdir"}
5608 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5609
5610 set_default $PATHS_LIST
5611 set_default nm
5612
5613 disabled optimizations || enabled ossfuzz || check_cflags -fomit-frame-pointer
5614
5615 enable_weak_pic() {
5616     disabled pic && return
5617     enable pic
5618     add_cppflags -DPIC
5619     case "$target_os" in
5620     mingw*|cygwin*|win*)
5621         ;;
5622     *)
5623         add_cflags -fPIC
5624         add_asflags -fPIC
5625         ;;
5626     esac
5627 }
5628
5629 enabled pic && enable_weak_pic
5630
5631 test_cc <<EOF || die "Symbol mangling check failed."
5632 int ff_extern;
5633 EOF
5634 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5635 extern_prefix=${sym%%ff_extern*}
5636
5637 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
5638
5639 for restrict_keyword in restrict __restrict__ __restrict ""; do
5640     test_code cc "" "char * $restrict_keyword p" && break
5641 done
5642
5643 check_cc pragma_deprecated "" '_Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"")'
5644
5645 # The global variable ensures the bits appear unchanged in the object file.
5646 test_cc <<EOF || die "endian test failed"
5647 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5648 EOF
5649 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5650
5651 check_cc const_nan math.h "struct { double d; } static const bar[] = { { NAN } }"
5652
5653 if ! enabled ppc64 || enabled bigendian; then
5654     disable vsx
5655 fi
5656
5657 check_gas() {
5658     log "check_gas using '$as' as AS"
5659     # :vararg is used on aarch64, arm and ppc altivec
5660     check_as vararg "
5661 .macro m n, y:vararg=0
5662 \n: .int \y
5663 .endm
5664 m x" || return 1
5665     # .altmacro is only used in arm asm
5666     ! enabled arm || check_as gnu_as ".altmacro"
5667 }
5668
5669 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5670     nogas=:
5671     enabled_any arm aarch64 && nogas=die
5672     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5673     as_noop=-v
5674
5675     case $as_type in
5676         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5677         gcc)  gaspp_as_type=gas ;;
5678         *)    gaspp_as_type=$as_type ;;
5679     esac
5680
5681     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5682
5683     test "${as#*gas-preprocessor.pl}" != "$as" ||
5684     test_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5685         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5686
5687     if ! check_gas ; then
5688         as=${gas:=$as}
5689         check_gas || \
5690             $nogas "GNU assembler not found, install/update gas-preprocessor"
5691     fi
5692
5693     check_as as_func ".func test
5694                       .endfunc"
5695 fi
5696
5697 check_inline_asm inline_asm_labels '"1:\n"'
5698
5699 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5700
5701 if enabled aarch64; then
5702     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5703     # internal assembler in clang 3.3 does not support this instruction
5704     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5705     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5706
5707     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5708
5709 elif enabled alpha; then
5710
5711     check_cflags -mieee
5712
5713 elif enabled arm; then
5714
5715     enabled msvc && check_cpp_condition thumb stddef.h "defined _M_ARMT"
5716     test_cpp_condition stddef.h "defined __thumb__" && test_cc <<EOF && enable_weak thumb
5717 float func(float a, float b){ return a+b; }
5718 EOF
5719     enabled thumb && check_cflags -mthumb || check_cflags -marm
5720
5721     if check_cpp_condition vfp_args stddef.h "defined __ARM_PCS_VFP"; then
5722         :
5723     elif check_cpp_condition vfp_args stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5724         :
5725     elif ! test_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5726         case "${cross_prefix:-$cc}" in
5727             *hardfloat*) enable vfp_args; fpabi=vfp ;;
5728             *) check_ld "cc" vfp_args <<EOF && fpabi=vfp || fpabi=soft ;;
5729 __asm__ (".eabi_attribute 28, 1");
5730 int main(void) { return 0; }
5731 EOF
5732         esac
5733         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5734     fi
5735
5736     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5737     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5738     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5739     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5740     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5741     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5742     enabled setend  && check_insn setend  'setend be'
5743
5744     [ $target_os = linux ] || [ $target_os = android ] ||
5745         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5746             $ARCH_EXT_LIST_ARM
5747
5748     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5749
5750     check_as as_arch_directive ".arch armv7-a"
5751     check_as as_dn_directive   "ra .dn d0.i16"
5752     check_as as_fpu_directive  ".fpu neon"
5753
5754     # llvm's integrated assembler supports .object_arch from llvm 3.5
5755     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
5756         check_as as_object_arch ".object_arch armv4"
5757
5758     # MS armasm fails to assemble our PIC constructs
5759     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5760
5761 elif enabled mips; then
5762
5763     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5764     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5765     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5766
5767     # Enable minimum ISA based on selected options
5768     if enabled mips64; then
5769         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5770         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5771         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5772     else
5773         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5774         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5775         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5776         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5777     fi
5778
5779     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5780     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5781     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_headers msa.h || disable msa
5782     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5783     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5784     enabled msa && enabled msa2 && check_inline_asm_flags msa2 '"nxbits.any.b $w0, $w0"' '-mmsa2' && check_headers msa2.h || disable msa2
5785
5786     if enabled bigendian && enabled msa; then
5787         disable msa
5788     fi
5789
5790 elif enabled parisc; then
5791
5792     if enabled gcc; then
5793         case $($cc -dumpversion) in
5794             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5795         esac
5796     fi
5797
5798 elif enabled ppc; then
5799
5800     enable local_aligned
5801
5802     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5803     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5804     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5805     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5806
5807     if enabled altivec; then
5808         check_cflags -maltivec -mabi=altivec
5809
5810         # check if our compiler supports Motorola AltiVec C API
5811         check_cc altivec altivec.h "vector signed int v1 = (vector signed int) { 0 };
5812                                     vector signed int v2 = (vector signed int) { 1 };
5813                                     v1 = vec_add(v1, v2);"
5814
5815         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5816     fi
5817
5818     if enabled vsx; then
5819         check_cflags -mvsx &&
5820         check_cc vsx altivec.h "int v[4] = { 0 };
5821                                 vector signed int v1 = vec_vsx_ld(0, v);"
5822     fi
5823
5824     if enabled power8; then
5825         check_cpp_condition power8 "altivec.h" "defined(_ARCH_PWR8)"
5826     fi
5827
5828 elif enabled x86; then
5829
5830     check_builtin rdtsc    intrin.h   "__rdtsc()"
5831     check_builtin mm_empty mmintrin.h "_mm_empty()"
5832
5833     enable local_aligned
5834
5835     # check whether EBP is available on x86
5836     # As 'i' is stored on the stack, this program will crash
5837     # if the base pointer is used to access it because the
5838     # base pointer is cleared in the inline assembly code.
5839     check_exec_crash <<EOF && enable ebp_available
5840 volatile int i=0;
5841 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5842 return i;
5843 EOF
5844
5845     # check whether EBX is available on x86
5846     check_inline_asm ebx_available '""::"b"(0)' &&
5847         check_inline_asm ebx_available '"":::"%ebx"'
5848
5849     # check whether xmm clobbers are supported
5850     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5851
5852     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5853         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5854
5855     # check whether binutils is new enough to compile SSSE3/MMXEXT
5856     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5857     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5858
5859     probe_x86asm(){
5860         x86asmexe_probe=$1
5861         if test_cmd $x86asmexe_probe -v; then
5862             x86asmexe=$x86asmexe_probe
5863             x86asm_type=nasm
5864             x86asm_debug="-g -F dwarf"
5865             X86ASMDEP=
5866             X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
5867         elif test_cmd $x86asmexe_probe --version; then
5868             x86asmexe=$x86asmexe_probe
5869             x86asm_type=yasm
5870             x86asm_debug="-g dwarf2"
5871             X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
5872             X86ASM_DEPFLAGS=
5873         fi
5874         check_x86asm x86asm "movbe ecx, [5]"
5875     }
5876
5877     if ! disabled_any asm mmx x86asm; then
5878         disable x86asm
5879         for program in $x86asmexe nasm yasm; do
5880             probe_x86asm $program && break
5881         done
5882         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
5883         X86ASMFLAGS="-f $objformat"
5884         enabled pic               && append X86ASMFLAGS "-DPIC"
5885         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
5886         case "$objformat" in
5887             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
5888         esac
5889
5890         check_x86asm avx512_external "vmovdqa32 [eax]{k1}{z}, zmm0"
5891         check_x86asm avx2_external   "vextracti128 xmm0, ymm0, 0"
5892         check_x86asm xop_external    "vpmacsdd xmm0, xmm1, xmm2, xmm3"
5893         check_x86asm fma4_external   "vfmaddps ymm0, ymm1, ymm2, ymm3"
5894         check_x86asm cpunop          "CPU amdnop"
5895     fi
5896
5897     case "$cpu" in
5898         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5899             disable fast_clz
5900         ;;
5901     esac
5902
5903 fi
5904
5905 check_cc intrinsics_neon arm_neon.h "int16x8_t test = vdupq_n_s16(0)"
5906
5907 check_ldflags -Wl,--as-needed
5908 check_ldflags -Wl,-z,noexecstack
5909
5910 if ! disabled network; then
5911     check_func getaddrinfo $network_extralibs
5912     check_func inet_aton $network_extralibs
5913
5914     check_type netdb.h "struct addrinfo"
5915     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5916     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5917     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5918     check_type poll.h "struct pollfd"
5919     check_type netinet/sctp.h "struct sctp_event_subscribe"
5920     check_struct "sys/socket.h" "struct msghdr" msg_flags
5921     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5922     check_type netinet/in.h "struct sockaddr_in6"
5923     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5924     check_type "sys/types.h sys/socket.h" socklen_t
5925
5926     # Prefer arpa/inet.h over winsock2
5927     if check_headers arpa/inet.h ; then
5928         check_func closesocket
5929     elif check_headers winsock2.h ; then
5930         check_func_headers winsock2.h closesocket -lws2 &&
5931             network_extralibs="-lws2" ||
5932         { check_func_headers winsock2.h closesocket -lws2_32 &&
5933             network_extralibs="-lws2_32"; } || disable winsock2_h network
5934         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5935
5936         check_type ws2tcpip.h socklen_t
5937         check_type ws2tcpip.h "struct addrinfo"
5938         check_type ws2tcpip.h "struct group_source_req"
5939         check_type ws2tcpip.h "struct ip_mreq_source"
5940         check_type ws2tcpip.h "struct ipv6_mreq"
5941         check_type winsock2.h "struct pollfd"
5942         check_struct winsock2.h "struct sockaddr" sa_len
5943         check_type ws2tcpip.h "struct sockaddr_in6"
5944         check_type ws2tcpip.h "struct sockaddr_storage"
5945     else
5946         disable network
5947     fi
5948 fi
5949
5950 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5951 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5952 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5953 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5954 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5955 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5956 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5957
5958 case "$custom_allocator" in
5959     jemalloc)
5960         # jemalloc by default does not use a prefix
5961         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5962     ;;
5963     tcmalloc)
5964         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
5965         malloc_prefix=tc_
5966     ;;
5967 esac
5968
5969 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5970 check_func  ${malloc_prefix}memalign            && enable memalign
5971 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5972
5973 check_func  access
5974 check_func_headers stdlib.h arc4random
5975 check_lib   clock_gettime time.h clock_gettime || check_lib clock_gettime time.h clock_gettime -lrt
5976 check_func  fcntl
5977 check_func  fork
5978 check_func  gethrtime
5979 check_func  getopt
5980 check_func  getrusage
5981 check_func  gettimeofday
5982 check_func  isatty
5983 check_func  mkstemp
5984 check_func  mmap
5985 check_func  mprotect
5986 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5987 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
5988 check_func  sched_getaffinity
5989 check_func  setrlimit
5990 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5991 check_func  strerror_r
5992 check_func  sysconf
5993 check_func  sysctl
5994 check_func  usleep
5995
5996 check_func_headers conio.h kbhit
5997 check_func_headers io.h setmode
5998 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5999 check_func_headers mach/mach_time.h mach_absolute_time
6000 check_func_headers stdlib.h getenv
6001 check_func_headers sys/stat.h lstat
6002
6003 check_func_headers windows.h GetProcessAffinityMask
6004 check_func_headers windows.h GetProcessTimes
6005 check_func_headers windows.h GetSystemTimeAsFileTime
6006 check_func_headers windows.h LoadLibrary
6007 check_func_headers windows.h MapViewOfFile
6008 check_func_headers windows.h PeekNamedPipe
6009 check_func_headers windows.h SetConsoleTextAttribute
6010 check_func_headers windows.h SetConsoleCtrlHandler
6011 check_func_headers windows.h Sleep
6012 check_func_headers windows.h VirtualAlloc
6013 check_func_headers glob.h glob
6014 enabled xlib &&
6015     check_lib xlib "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
6016
6017 check_headers direct.h
6018 check_headers dirent.h
6019 check_headers dxgidebug.h
6020 check_headers dxva.h
6021 check_headers dxva2api.h -D_WIN32_WINNT=0x0600
6022 check_headers io.h
6023 check_headers linux/perf_event.h
6024 check_headers libcrystalhd/libcrystalhd_if.h
6025 check_headers malloc.h
6026 check_headers net/udplite.h
6027 check_headers poll.h
6028 check_headers sys/param.h
6029 check_headers sys/resource.h
6030 check_headers sys/select.h
6031 check_headers sys/time.h
6032 check_headers sys/un.h
6033 check_headers termios.h
6034 check_headers unistd.h
6035 check_headers valgrind/valgrind.h
6036 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
6037 check_headers windows.h
6038 check_headers X11/extensions/XvMClib.h
6039 check_headers asm/types.h
6040
6041 # it seems there are versions of clang in some distros that try to use the
6042 # gcc headers, which explodes for stdatomic
6043 # so we also check that atomics actually work here
6044 check_builtin stdatomic stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0); foo += bar"
6045
6046 check_lib advapi32 "windows.h"            RegCloseKey          -ladvapi32
6047 check_lib bcrypt   "windows.h bcrypt.h"   BCryptGenRandom      -lbcrypt &&
6048     check_cpp_condition bcrypt bcrypt.h "defined BCRYPT_RNG_ALGORITHM"
6049 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
6050 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
6051 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
6052
6053 check_lib android android/native_window.h ANativeWindow_acquire -landroid
6054 check_lib mediandk "stdint.h media/NdkImage.h" AImage_delete -lmediandk
6055 check_lib camera2ndk "stdbool.h stdint.h camera/NdkCameraManager.h" ACameraManager_create -lcamera2ndk
6056
6057 enabled appkit       && check_apple_framework AppKit
6058 enabled audiotoolbox && check_apple_framework AudioToolbox
6059 enabled avfoundation && check_apple_framework AVFoundation
6060 enabled coreimage    && check_apple_framework CoreImage
6061 enabled videotoolbox && check_apple_framework VideoToolbox
6062
6063 check_apple_framework CoreFoundation
6064 check_apple_framework CoreMedia
6065 check_apple_framework CoreVideo
6066
6067 enabled avfoundation && {
6068     disable coregraphics applicationservices
6069     check_lib coregraphics        CoreGraphics/CoreGraphics.h               CGGetActiveDisplayList "-framework CoreGraphics" ||
6070     check_lib applicationservices ApplicationServices/ApplicationServices.h CGGetActiveDisplayList "-framework ApplicationServices"; }
6071
6072 enabled videotoolbox && {
6073     check_lib coreservices CoreServices/CoreServices.h UTGetOSTypeFromString "-framework CoreServices"
6074     check_func_headers CoreMedia/CMFormatDescription.h kCMVideoCodecType_HEVC "-framework CoreMedia"
6075     check_func_headers CoreVideo/CVPixelBuffer.h kCVPixelFormatType_420YpCbCr10BiPlanarVideoRange "-framework CoreVideo"
6076     check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferTransferFunction_SMPTE_ST_2084_PQ "-framework CoreVideo"
6077     check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferTransferFunction_ITU_R_2100_HLG "-framework CoreVideo"
6078     check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferTransferFunction_Linear "-framework CoreVideo"
6079 }
6080
6081 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
6082
6083 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
6084 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
6085 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
6086 check_type "windows.h d3d11.h" "ID3D11VideoContext"
6087 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
6088
6089 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
6090
6091 if [ -z "$nvccflags" ]; then
6092     nvccflags=$nvccflags_default
6093 fi
6094
6095 if enabled x86_64 || enabled ppc64 || enabled aarch64; then
6096     nvccflags="$nvccflags -m64"
6097 else
6098     nvccflags="$nvccflags -m32"
6099 fi
6100
6101 if enabled cuda_nvcc; then
6102     nvccflags="$nvccflags -ptx"
6103 else
6104     nvccflags="$nvccflags -S -nocudalib -nocudainc --cuda-device-only -include ${source_link}/compat/cuda/cuda_runtime.h"
6105     check_nvcc cuda_llvm
6106 fi
6107
6108 if ! disabled ffnvcodec; then
6109     ffnv_hdr_list="ffnvcodec/nvEncodeAPI.h ffnvcodec/dynlink_cuda.h ffnvcodec/dynlink_cuviddec.h ffnvcodec/dynlink_nvcuvid.h"
6110     check_pkg_config ffnvcodec "ffnvcodec >= 9.0.18.0" "$ffnv_hdr_list" "" || \
6111       check_pkg_config ffnvcodec "ffnvcodec >= 8.2.15.8 ffnvcodec < 8.3" "$ffnv_hdr_list" "" || \
6112       check_pkg_config ffnvcodec "ffnvcodec >= 8.1.24.9 ffnvcodec < 8.2" "$ffnv_hdr_list" "" || \
6113       check_pkg_config ffnvcodec "ffnvcodec >= 8.0.14.9 ffnvcodec < 8.1" "$ffnv_hdr_list" ""
6114 fi
6115
6116 check_cpp_condition winrt windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)"
6117
6118 if ! disabled w32threads && ! enabled pthreads; then
6119     check_func_headers "windows.h process.h" _beginthreadex &&
6120         check_type "windows.h" CONDITION_VARIABLE &&
6121         check_type "windows.h" INIT_ONCE &&
6122         enable w32threads || disable w32threads
6123     if ! enabled w32threads && enabled winrt; then
6124         check_func_headers "windows.h" CreateThread &&
6125             enable w32threads || disable w32threads
6126     fi
6127 fi
6128
6129 # check for some common methods of building with pthread support
6130 # do this before the optional library checks as some of them require pthreads
6131 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
6132     if check_lib pthreads pthread.h pthread_join   -pthread &&
6133        check_lib pthreads pthread.h pthread_create -pthread; then
6134         add_cflags -pthread
6135     elif check_lib pthreads pthread.h pthread_join   -pthreads &&
6136          check_lib pthreads pthread.h pthread_create -pthreads; then
6137         add_cflags -pthreads
6138     elif check_lib pthreads pthread.h pthread_join   -ldl -pthread &&
6139          check_lib pthreads pthread.h pthread_create -ldl -pthread; then
6140         add_cflags -ldl -pthread
6141     elif check_lib pthreads pthread.h pthread_join   -lpthreadGC2 &&
6142          check_lib pthreads pthread.h pthread_create -lpthreadGC2; then
6143         :
6144     elif check_lib pthreads pthread.h pthread_join   -lpthread &&
6145          check_lib pthreads pthread.h pthread_create -lpthread; then
6146         :
6147     elif check_func pthread_join && check_func pthread_create; then
6148         enable pthreads
6149     fi
6150     check_cc pthreads "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER"
6151
6152     if enabled pthreads; then
6153         check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
6154         check_func pthread_cancel $pthreads_extralibs
6155     fi
6156 fi
6157
6158 enabled  zlib && { check_pkg_config zlib zlib "zlib.h" zlibVersion ||
6159                    check_lib zlib   zlib.h      zlibVersion    -lz; }
6160 enabled bzlib && check_lib bzlib bzlib.h BZ2_bzlibVersion    -lbz2
6161 enabled  lzma && check_lib lzma   lzma.h lzma_version_number -llzma
6162
6163 # On some systems dynamic loading requires no extra linker flags
6164 check_lib libdl dlfcn.h "dlopen dlsym" || check_lib libdl dlfcn.h "dlopen dlsym" -ldl
6165
6166 check_lib libm math.h sin -lm
6167
6168 atan2f_args=2
6169 copysign_args=2
6170 hypot_args=2
6171 ldexpf_args=2
6172 powf_args=2
6173
6174 for func in $MATH_FUNCS; do
6175     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
6176 done
6177
6178 for func in $COMPLEX_FUNCS; do
6179     eval check_complexfunc $func \${${func}_args:-1}
6180 done
6181
6182 # these are off by default, so fail if requested and not available
6183 enabled cuda_nvcc         && { check_nvcc cuda_nvcc || die "ERROR: failed checking for nvcc."; }
6184 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
6185 enabled decklink          && { require_headers DeckLinkAPI.h &&
6186                                { test_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a090500" || die "ERROR: Decklink API version must be >= 10.9.5."; } }
6187 enabled frei0r            && require_headers "frei0r.h dlfcn.h"
6188 enabled gmp               && require gmp gmp.h mpz_export -lgmp
6189 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init
6190 enabled jni               && { [ $target_os = "android" ] && check_headers jni.h && enabled pthreads || die "ERROR: jni not found"; }
6191 enabled ladspa            && require_headers "ladspa.h dlfcn.h"
6192 enabled libaom            && require_pkg_config libaom "aom >= 1.0.0" aom/aom_codec.h aom_codec_version
6193 enabled libaribb24        && { check_pkg_config libaribb24 "aribb24 > 1.0.3" "aribb24/aribb24.h" arib_instance_new ||
6194                                { enabled gpl && require_pkg_config libaribb24 aribb24 "aribb24/aribb24.h" arib_instance_new; } ||
6195                                die "ERROR: libaribb24 requires version higher than 1.0.3 or --enable-gpl."; }
6196 enabled lv2               && require_pkg_config lv2 lilv-0 "lilv/lilv.h" lilv_world_new
6197 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
6198 enabled libass            && require_pkg_config libass libass ass/ass.h ass_library_init
6199 enabled libbluray         && require_pkg_config libbluray libbluray libbluray/bluray.h bd_open
6200 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
6201 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
6202                              { check_lib libcelt celt/celt.h celt_decoder_create_custom -lcelt0 ||
6203                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
6204 enabled libcaca           && require_pkg_config libcaca caca caca.h caca_create_canvas
6205 enabled libcodec2         && require libcodec2 codec2/codec2.h codec2_create -lcodec2
6206 enabled libdav1d          && require_pkg_config libdav1d "dav1d >= 0.4.0" "dav1d/dav1d.h" dav1d_version
6207 enabled libdavs2          && require_pkg_config libdavs2 "davs2 >= 1.6.0" davs2.h davs2_decoder_open
6208 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
6209 enabled libdrm            && require_pkg_config libdrm libdrm xf86drm.h drmGetVersion
6210 enabled libfdk_aac        && { check_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
6211                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
6212                                  warn "using libfdk without pkg-config"; } }
6213 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"
6214 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_extralibs
6215 enabled fontconfig        && enable libfontconfig
6216 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
6217 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
6218 enabled libfribidi        && require_pkg_config libfribidi fribidi fribidi.h fribidi_version_info
6219 enabled libgme            && { check_pkg_config libgme libgme gme/gme.h gme_new_emu ||
6220                                require libgme gme/gme.h gme_new_emu -lgme -lstdc++; }
6221 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
6222                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
6223                                done || die "ERROR: libgsm not found"; }
6224 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc $pthreads_extralibs
6225 enabled libklvanc         && require libklvanc libklvanc/vanc.h klvanc_context_create -lklvanc
6226 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
6227 enabled liblensfun        && require_pkg_config liblensfun lensfun lensfun.h lf_db_new
6228 # While it may appear that require is being used as a pkg-config
6229 # fallback for libmfx, it is actually being used to detect a different
6230 # installation route altogether.  If libmfx is installed via the Intel
6231 # Media SDK or Intel Media Server Studio, these don't come with
6232 # pkg-config support.  Instead, users should make sure that the build
6233 # can find the libraries and headers through other means.
6234 enabled libmfx            && { check_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit ||
6235                                { require libmfx "mfx/mfxvideo.h" MFXInit "-llibmfx $advapi32_extralibs" && warn "using libmfx without pkg-config"; } }
6236 enabled libmodplug        && require_pkg_config libmodplug libmodplug libmodplug/modplug.h ModPlug_Load
6237 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame $libm_extralibs
6238 enabled libmysofa         && { check_pkg_config libmysofa libmysofa mysofa.h mysofa_load ||
6239                                require libmysofa mysofa.h mysofa_load -lmysofa $zlib_extralibs; }
6240 enabled libnpp            && { check_lib libnpp npp.h nppGetLibVersion -lnppig -lnppicc -lnppc -lnppidei ||
6241                                check_lib libnpp npp.h nppGetLibVersion -lnppi -lnppc -lnppidei ||
6242                                die "ERROR: libnpp not found"; }
6243 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
6244 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
6245 enabled libopencv         && { check_headers opencv2/core/core_c.h &&
6246                                { check_pkg_config libopencv opencv opencv2/core/core_c.h cvCreateImageHeader ||
6247                                  require libopencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
6248                                require_pkg_config libopencv opencv opencv/cxcore.h cvCreateImageHeader; }
6249 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
6250 enabled libopenjpeg       && { check_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version ||
6251                                { require_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } }
6252 enabled libopenmpt        && require_pkg_config libopenmpt "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create -lstdc++ && append libopenmpt_extralibs "-lstdc++"
6253 enabled libopus           && {
6254     enabled libopus_decoder && {
6255         require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
6256     }
6257     enabled libopus_encoder && {
6258         require_pkg_config libopus opus opus_multistream.h opus_multistream_surround_encoder_create
6259     }
6260 }
6261 enabled libpulse          && require_pkg_config libpulse libpulse pulse/pulseaudio.h pa_context_new
6262 enabled librsvg           && require_pkg_config librsvg librsvg-2.0 librsvg-2.0/librsvg/rsvg.h rsvg_handle_render_cairo
6263 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
6264 enabled librubberband     && require_pkg_config librubberband "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new -lstdc++ && append librubberband_extralibs "-lstdc++"
6265 enabled libshine          && require_pkg_config libshine shine shine/layer3.h shine_encode_buffer
6266 enabled libsmbclient      && { check_pkg_config libsmbclient smbclient libsmbclient.h smbc_init ||
6267                                require libsmbclient libsmbclient.h smbc_init -lsmbclient; }
6268 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy -lstdc++
6269 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
6270 enabled libssh            && require_pkg_config libssh libssh libssh/sftp.h sftp_init
6271 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init
6272 enabled libsrt            && require_pkg_config libsrt "srt >= 1.3.0" srt/srt.h srt_socket
6273 enabled libtensorflow     && require libtensorflow tensorflow/c/c_api.h TF_Version -ltensorflow
6274 enabled libtesseract      && require_pkg_config libtesseract tesseract tesseract/capi.h TessBaseAPICreate
6275 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
6276 enabled libtls            && require_pkg_config libtls libtls tls.h tls_configure
6277 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
6278                              { check_lib libtwolame twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
6279                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
6280 enabled libv4l2           && require_pkg_config libv4l2 libv4l2 libv4l2.h v4l2_ioctl
6281 enabled libvidstab        && require_pkg_config libvidstab "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
6282 enabled libvmaf           && require_pkg_config libvmaf "libvmaf >= 1.3.9" libvmaf.h compute_vmaf
6283 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
6284 enabled libvorbis         && require_pkg_config libvorbis vorbis vorbis/codec.h vorbis_info_init &&
6285                              require_pkg_config libvorbisenc vorbisenc vorbis/vorbisenc.h vorbis_encode_init
6286
6287 enabled libvpx            && {
6288     enabled libvpx_vp8_decoder && {
6289         check_pkg_config libvpx_vp8_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
6290             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"
6291     }
6292     enabled libvpx_vp8_encoder && {
6293         check_pkg_config libvpx_vp8_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
6294             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"
6295     }
6296     enabled libvpx_vp9_decoder && {
6297         check_pkg_config libvpx_vp9_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
6298             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"
6299     }
6300     enabled libvpx_vp9_encoder && {
6301         check_pkg_config libvpx_vp9_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
6302             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"
6303     }
6304     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
6305         die "libvpx enabled but no supported decoders found"
6306     fi
6307 }
6308
6309 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
6310 enabled libwebp           && {
6311     enabled libwebp_encoder      && require_pkg_config libwebp "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
6312     enabled libwebp_anim_encoder && check_pkg_config libwebp_anim_encoder "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit; }
6313 enabled libx264           && { check_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode ||
6314                                { require libx264 "stdint.h x264.h" x264_encoder_encode "-lx264 $pthreads_extralibs $libm_extralibs" &&
6315                                  warn "using libx264 without pkg-config"; } } &&
6316                              require_cpp_condition libx264 x264.h "X264_BUILD >= 118" &&
6317                              check_cpp_condition libx262 x264.h "X264_MPEG2"
6318 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
6319                              require_cpp_condition libx265 x265.h "X265_BUILD >= 68"
6320 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode "-lxavs $pthreads_extralibs $libm_extralibs"
6321 enabled libxavs2          && require_pkg_config libxavs2 "xavs2 >= 1.3.0" "stdint.h xavs2.h" xavs2_api_get
6322 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
6323 enabled libzimg           && require_pkg_config libzimg "zimg >= 2.7.0" zimg.h zimg_get_api_version
6324 enabled libzmq            && require_pkg_config libzmq libzmq zmq.h zmq_ctx_new
6325 enabled libzvbi           && require_pkg_config libzvbi zvbi-0.2 libzvbi.h vbi_decoder_new &&
6326                              { test_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
6327                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
6328 enabled libxml2           && require_pkg_config libxml2 libxml-2.0 libxml2/libxml/xmlversion.h xmlCheckVersion
6329 enabled mbedtls           && { check_pkg_config mbedtls mbedtls mbedtls/x509_crt.h mbedtls_x509_crt_init ||
6330                                check_pkg_config mbedtls mbedtls mbedtls/ssl.h mbedtls_ssl_init ||
6331                                check_lib mbedtls mbedtls/ssl.h mbedtls_ssl_init -lmbedtls -lmbedx509 -lmbedcrypto ||
6332                                die "ERROR: mbedTLS not found"; }
6333 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
6334 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
6335                                { ! enabled cross_compile &&
6336                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
6337                                  add_ldflags -L/opt/vc/lib/ &&
6338                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
6339                                die "ERROR: mmal not found" &&
6340                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
6341 enabled openal            && { { for al_extralibs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
6342                                check_lib openal 'AL/al.h' alGetError "${al_extralibs}" && break; done } ||
6343                                die "ERROR: openal not found"; } &&
6344                              { test_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
6345                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
6346 enabled opencl            && { check_pkg_config opencl OpenCL CL/cl.h clEnqueueNDRangeKernel ||
6347                                check_lib opencl OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
6348                                check_lib opencl CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
6349                                die "ERROR: opencl not found"; } &&
6350                              { test_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
6351                                test_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
6352                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
6353 enabled opengl            && { check_lib opengl GL/glx.h glXGetProcAddress "-lGL" ||
6354                                check_lib opengl windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
6355                                check_lib opengl OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
6356                                check_lib opengl ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
6357                                die "ERROR: opengl not found."
6358                              }
6359 enabled omx               && require_headers OMX_Core.h
6360 enabled omx_rpi           && { check_headers OMX_Core.h ||
6361                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_headers OMX_Core.h ; } ||
6362                                die "ERROR: OpenMAX IL headers not found"; } && enable omx
6363 enabled openssl           && { check_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
6364                                check_pkg_config openssl openssl openssl/ssl.h SSL_library_init ||
6365                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
6366                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
6367                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
6368                                die "ERROR: openssl not found"; }
6369 enabled pocketsphinx      && require_pkg_config pocketsphinx pocketsphinx pocketsphinx/pocketsphinx.h ps_init
6370 enabled rkmpp             && { require_pkg_config rkmpp rockchip_mpp  rockchip/rk_mpi.h mpp_create &&
6371                                require_pkg_config rockchip_mpp "rockchip_mpp >= 1.3.7" rockchip/rk_mpi.h mpp_create &&
6372                                { enabled libdrm ||
6373                                  die "ERROR: rkmpp requires --enable-libdrm"; }
6374                              }
6375 enabled vapoursynth       && require_pkg_config vapoursynth "vapoursynth-script >= 42" VSScript.h vsscript_init
6376
6377
6378 if enabled gcrypt; then
6379     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
6380     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
6381         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
6382         gcrypt_extralibs=$("${GCRYPT_CONFIG}" --libs)
6383         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_extralibs ||
6384             die "ERROR: gcrypt not found"
6385         add_cflags $gcrypt_cflags
6386     else
6387         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
6388     fi
6389 fi
6390
6391 if enabled sdl2; then
6392     SDL2_CONFIG="${cross_prefix}sdl2-config"
6393     test_pkg_config sdl2 "sdl2 >= 2.0.1 sdl2 < 2.1.0" SDL_events.h SDL_PollEvent
6394     if disabled sdl2 && "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
6395         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
6396         sdl2_extralibs=$("${SDL2_CONFIG}" --libs)
6397         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
6398         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
6399         check_func_headers SDL_events.h SDL_PollEvent $sdl2_extralibs $sdl2_cflags &&
6400             enable sdl2
6401     fi
6402     if test $target_os = "mingw32"; then
6403         sdl2_extralibs=$(filter_out '-mwindows' $sdl2_extralibs)
6404     fi
6405 fi
6406
6407 if enabled decklink; then
6408     case $target_os in
6409         mingw32*|mingw64*|win32|win64)
6410             decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
6411             decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
6412             ;;
6413     esac
6414 fi
6415
6416 enabled securetransport &&
6417     check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
6418     check_lib securetransport "Security/SecureTransport.h Security/Security.h" "SSLCreateContext" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" ||
6419         disable securetransport
6420
6421 enabled securetransport &&
6422     check_func SecItemImport "-Wl,-framework,CoreFoundation -Wl,-framework,Security"
6423
6424 enabled schannel &&
6425     check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
6426     test_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" &&
6427     schannel_extralibs="-lsecur32" ||
6428         disable schannel
6429
6430 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
6431 enabled makeinfo \
6432     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
6433     && enable makeinfo_html || disable makeinfo_html
6434 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
6435 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
6436 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
6437 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
6438
6439 # check V4L2 codecs available in the API
6440 check_headers linux/fb.h
6441 check_headers linux/videodev2.h
6442 test_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6443 check_cc v4l2_m2m linux/videodev2.h "int i = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_VIDEO_M2M | V4L2_BUF_FLAG_LAST;"
6444 check_cc vc1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VC1_ANNEX_G;"
6445 check_cc mpeg1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG1;"
6446 check_cc mpeg2_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG2;"
6447 check_cc mpeg4_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG4;"
6448 check_cc hevc_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_HEVC;"
6449 check_cc h263_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H263;"
6450 check_cc h264_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H264;"
6451 check_cc vp8_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP8;"
6452 check_cc vp9_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP9;"
6453
6454 check_headers sys/videoio.h
6455 test_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6456
6457 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
6458 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
6459 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
6460 # w32api 3.12 had it defined wrong
6461 check_cpp_condition vfwcap_defines vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER"
6462
6463 check_type "dshow.h" IBaseFilter
6464
6465 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
6466 check_headers "dev/bktr/ioctl_meteor.h dev/bktr/ioctl_bt848.h"                   ||
6467     check_headers "machine/ioctl_meteor.h machine/ioctl_bt848.h"                 ||
6468     check_headers "dev/video/meteor/ioctl_meteor.h dev/video/bktr/ioctl_bt848.h" ||
6469     check_headers "dev/ic/bt8xx.h"
6470
6471 if check_struct sys/soundcard.h audio_buf_info bytes; then
6472     enable_sanitized sys/soundcard.h
6473 else
6474     test_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_sanitized sys/soundcard.h
6475     #include <sys/soundcard.h>
6476     audio_buf_info abc;
6477 EOF
6478 fi
6479
6480 enabled alsa && check_pkg_config alsa alsa "alsa/asoundlib.h" snd_pcm_htimestamp ||
6481     check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound
6482
6483 enabled libjack &&
6484     require_pkg_config libjack jack jack/jack.h jack_port_get_latency_range
6485
6486 enabled sndio && check_lib sndio sndio.h sio_open -lsndio
6487
6488 if enabled libcdio; then
6489     check_pkg_config libcdio libcdio_paranoia "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open ||
6490     check_pkg_config libcdio libcdio_paranoia "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open ||
6491     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6492     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6493     die "ERROR: No usable libcdio/cdparanoia found"
6494 fi
6495
6496 enabled libxcb && check_pkg_config libxcb "xcb >= 1.4" xcb/xcb.h xcb_connect ||
6497     disable libxcb_shm libxcb_shape libxcb_xfixes
6498
6499 if enabled libxcb; then
6500     enabled libxcb_shm    && check_pkg_config libxcb_shm    xcb-shm    xcb/shm.h    xcb_shm_attach
6501     enabled libxcb_shape  && check_pkg_config libxcb_shape  xcb-shape  xcb/shape.h  xcb_shape_get_rectangles
6502     enabled libxcb_xfixes && check_pkg_config libxcb_xfixes xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image
6503 fi
6504
6505 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6506
6507 # d3d11va requires linking directly to dxgi and d3d11 if not building for
6508 # the desktop api partition
6509 test_cpp <<EOF && enable uwp && d3d11va_extralibs="-ldxgi -ld3d11"
6510 #ifdef WINAPI_FAMILY
6511 #include <winapifamily.h>
6512 #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
6513 #error desktop, not uwp
6514 #else
6515 // WINAPI_FAMILY_APP, WINAPI_FAMILY_PHONE_APP => UWP
6516 #endif
6517 #else
6518 #error no family set
6519 #endif
6520 EOF
6521
6522 enabled vaapi &&
6523     check_pkg_config vaapi "libva >= 0.35.0" "va/va.h" vaInitialize
6524
6525 if enabled vaapi; then
6526     check_pkg_config vaapi_drm "libva-drm" "va/va_drm.h" vaGetDisplayDRM
6527
6528     if enabled xlib; then
6529         check_pkg_config vaapi_x11 "libva-x11" "va/va_x11.h" vaGetDisplay
6530     fi
6531
6532     check_cpp_condition vaapi_1 "va/va.h" "VA_CHECK_VERSION(1, 0, 0)"
6533
6534     check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
6535     check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
6536     check_struct "va/va.h va/va_vpp.h" "VAProcPipelineCaps" rotation_flags
6537     check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
6538     check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
6539     check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
6540     check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
6541 fi
6542
6543 if enabled_all opencl libdrm ; then
6544     check_type "CL/cl_intel.h" "clCreateImageFromFdINTEL_fn" &&
6545         enable opencl_drm_beignet
6546     check_func_headers "CL/cl_ext.h" clImportMemoryARM &&
6547         enable opencl_drm_arm
6548 fi
6549
6550 if enabled_all opencl vaapi ; then
6551     if enabled opencl_drm_beignet ; then
6552         enable opencl_vaapi_beignet
6553     else
6554         check_type "CL/cl.h CL/cl_va_api_media_sharing_intel.h" "clCreateFromVA_APIMediaSurfaceINTEL_fn" &&
6555             enable opencl_vaapi_intel_media
6556     fi
6557 fi
6558
6559 if enabled_all opencl dxva2 ; then
6560     check_type "CL/cl_dx9_media_sharing.h" cl_dx9_surface_info_khr &&
6561         enable opencl_dxva2
6562 fi
6563
6564 if enabled_all opencl d3d11va ; then
6565     check_type "CL/cl_d3d11.h" clGetDeviceIDsFromD3D11KHR_fn &&
6566         enable opencl_d3d11
6567 fi
6568
6569 enabled vdpau &&
6570     check_cpp_condition vdpau vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP"
6571
6572 enabled vdpau &&
6573     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
6574
6575 enabled crystalhd && check_lib crystalhd "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd
6576
6577 if enabled x86; then
6578     case $target_os in
6579         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6580             ;;
6581         *)
6582             disable ffnvcodec cuvid nvdec nvenc
6583             ;;
6584     esac
6585 elif enabled ppc64 && ! enabled bigendian; then
6586     case $target_os in
6587         linux)
6588             ;;
6589         *)
6590             disable ffnvcodec cuvid nvdec nvenc
6591             ;;
6592     esac
6593 else
6594     disable ffnvcodec cuvid nvdec nvenc
6595 fi
6596
6597 enabled ffnvcodec && enable cuda
6598
6599 enabled nvenc &&
6600     test_cc -I$source_path <<EOF || disable nvenc
6601 #include <ffnvcodec/nvEncodeAPI.h>
6602 NV_ENCODE_API_FUNCTION_LIST flist;
6603 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6604 int main(void) { return 0; }
6605 EOF
6606
6607 enabled amf &&
6608     check_cpp_condition amf "AMF/core/Version.h" \
6609         "(AMF_VERSION_MAJOR << 48 | AMF_VERSION_MINOR << 32 | AMF_VERSION_RELEASE << 16 | AMF_VERSION_BUILD_NUM) >= 0x0001000400040001"
6610
6611 # Funny iconv installations are not unusual, so check it after all flags have been set
6612 if enabled libc_iconv; then
6613     check_func_headers iconv.h iconv
6614 elif enabled iconv; then
6615     check_func_headers iconv.h iconv || check_lib iconv iconv.h iconv -liconv
6616 fi
6617
6618 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6619
6620 # add some useful compiler flags if supported
6621 check_cflags -Wdeclaration-after-statement
6622 check_cflags -Wall
6623 check_cflags -Wdisabled-optimization
6624 check_cflags -Wpointer-arith
6625 check_cflags -Wredundant-decls
6626 check_cflags -Wwrite-strings
6627 check_cflags -Wtype-limits
6628 check_cflags -Wundef
6629 check_cflags -Wmissing-prototypes
6630 check_cflags -Wno-pointer-to-int-cast
6631 check_cflags -Wstrict-prototypes
6632 check_cflags -Wempty-body
6633
6634 if enabled extra_warnings; then
6635     check_cflags -Wcast-qual
6636     check_cflags -Wextra
6637     check_cflags -Wpedantic
6638 fi
6639
6640 check_disable_warning(){
6641     warning_flag=-W${1#-Wno-}
6642     test_cflags $unknown_warning_flags $warning_flag && add_cflags $1
6643 }
6644
6645 test_cflags -Werror=unused-command-line-argument &&
6646     append unknown_warning_flags "-Werror=unused-command-line-argument"
6647 test_cflags -Werror=unknown-warning-option &&
6648     append unknown_warning_flags "-Werror=unknown-warning-option"
6649
6650 check_disable_warning -Wno-parentheses
6651 check_disable_warning -Wno-switch
6652 check_disable_warning -Wno-format-zero-length
6653 check_disable_warning -Wno-pointer-sign
6654 check_disable_warning -Wno-unused-const-variable
6655 check_disable_warning -Wno-bool-operation
6656 check_disable_warning -Wno-char-subscripts
6657
6658 check_disable_warning_headers(){
6659     warning_flag=-W${1#-Wno-}
6660     test_cflags $warning_flag && add_cflags_headers $1
6661 }
6662
6663 check_disable_warning_headers -Wno-deprecated-declarations
6664 check_disable_warning_headers -Wno-unused-variable
6665
6666 test_cc <<EOF && enable blocks_extension
6667 void (^block)(void);
6668 EOF
6669
6670 # add some linker flags
6671 check_ldflags -Wl,--warn-common
6672 check_ldflags -Wl,-rpath-link=:libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6673 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir && add_ldsoflags -Wl,-rpath,$libdir
6674 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6675
6676 # add some strip flags
6677 check_stripflags -x
6678
6679 enabled neon_clobber_test &&
6680     check_ldflags -Wl,--wrap,avcodec_open2              \
6681                   -Wl,--wrap,avcodec_decode_audio4      \
6682                   -Wl,--wrap,avcodec_decode_video2      \
6683                   -Wl,--wrap,avcodec_decode_subtitle2   \
6684                   -Wl,--wrap,avcodec_encode_audio2      \
6685                   -Wl,--wrap,avcodec_encode_video2      \
6686                   -Wl,--wrap,avcodec_encode_subtitle    \
6687                   -Wl,--wrap,avcodec_send_packet        \
6688                   -Wl,--wrap,avcodec_receive_packet     \
6689                   -Wl,--wrap,avcodec_send_frame         \
6690                   -Wl,--wrap,avcodec_receive_frame      \
6691                   -Wl,--wrap,swr_convert                \
6692                   -Wl,--wrap,avresample_convert ||
6693     disable neon_clobber_test
6694
6695 enabled xmm_clobber_test &&
6696     check_ldflags -Wl,--wrap,avcodec_open2              \
6697                   -Wl,--wrap,avcodec_decode_audio4      \
6698                   -Wl,--wrap,avcodec_decode_video2      \
6699                   -Wl,--wrap,avcodec_decode_subtitle2   \
6700                   -Wl,--wrap,avcodec_encode_audio2      \
6701                   -Wl,--wrap,avcodec_encode_video2      \
6702                   -Wl,--wrap,avcodec_encode_subtitle    \
6703                   -Wl,--wrap,avcodec_send_packet        \
6704                   -Wl,--wrap,avcodec_receive_packet     \
6705                   -Wl,--wrap,avcodec_send_frame         \
6706                   -Wl,--wrap,avcodec_receive_frame      \
6707                   -Wl,--wrap,swr_convert                \
6708                   -Wl,--wrap,avresample_convert         \
6709                   -Wl,--wrap,sws_scale ||
6710     disable xmm_clobber_test
6711
6712 check_ld "cc" proper_dce <<EOF
6713 extern const int array[512];
6714 static inline int func(void) { return array[0]; }
6715 int main(void) { return 0; }
6716 EOF
6717
6718 if enabled proper_dce; then
6719     echo "X { local: *; };" > $TMPV
6720     if test_ldflags -Wl,${version_script},$TMPV; then
6721         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6722         quotes='""'
6723         test_cc <<EOF && enable symver_asm_label
6724 void ff_foo(void) __asm__ ("av_foo@VERSION");
6725 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6726 EOF
6727         test_cc <<EOF && enable symver_gnu_asm
6728 __asm__(".symver ff_foo,av_foo@VERSION");
6729 void ff_foo(void) {}
6730 EOF
6731     fi
6732 fi
6733
6734 if [ -z "$optflags" ]; then
6735     if enabled small; then
6736         optflags=$cflags_size
6737     elif enabled optimizations; then
6738         optflags=$cflags_speed
6739     else
6740         optflags=$cflags_noopt
6741     fi
6742 fi
6743
6744 check_optflags(){
6745     check_cflags "$@"
6746     enabled lto && check_ldflags "$@"
6747 }
6748
6749 check_optflags $optflags
6750 check_optflags -fno-math-errno
6751 check_optflags -fno-signed-zeros
6752
6753 if enabled lto; then
6754     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6755     check_cflags  -flto
6756     check_ldflags -flto $cpuflags
6757     disable inline_asm_direct_symbol_refs
6758 fi
6759
6760 enabled ftrapv && check_cflags -ftrapv
6761
6762 test_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6763 int x;
6764 EOF
6765
6766
6767 if enabled icc; then
6768     # Just warnings, no remarks
6769     check_cflags -w1
6770     # -wd: Disable following warnings
6771     # 144, 167, 556: -Wno-pointer-sign
6772     # 188: enumerated type mixed with another type
6773     # 1292: attribute "foo" ignored
6774     # 1419: external declaration in primary source file
6775     # 10006: ignoring unknown option -fno-signed-zeros
6776     # 10148: ignoring unknown option -Wno-parentheses
6777     # 10156: ignoring option '-W'; no argument required
6778     # 13200: No EMMS instruction before call to function
6779     # 13203: No EMMS instruction before return from function
6780     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6781     # 11030: Warning unknown option --as-needed
6782     # 10156: ignoring option '-export'; no argument required
6783     check_ldflags -wd10156,11030
6784     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6785     enable ebp_available
6786     # The test above does not test linking
6787     enabled lto && disable symver_asm_label
6788     if enabled x86_32; then
6789         icc_version=$($cc -dumpversion)
6790         test ${icc_version%%.*} -ge 11 &&
6791             check_cflags -falign-stack=maintain-16-byte ||
6792             disable aligned_stack
6793     fi
6794 elif enabled gcc; then
6795     check_optflags -fno-tree-vectorize
6796     check_cflags -Werror=format-security
6797     check_cflags -Werror=implicit-function-declaration
6798     check_cflags -Werror=missing-prototypes
6799     check_cflags -Werror=return-type
6800     check_cflags -Werror=vla
6801     check_cflags -Wformat
6802     check_cflags -fdiagnostics-color=auto
6803     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6804     if enabled x86_32; then
6805         case $target_os in
6806         *bsd*)
6807             # BSDs don't guarantee a 16 byte aligned stack, but we can
6808             # request GCC to try to maintain 16 byte alignment throughout
6809             # function calls. Library entry points that might call assembly
6810             # functions align the stack. (The parameter means 2^4 bytes.)
6811             check_cflags -mpreferred-stack-boundary=4
6812             ;;
6813         esac
6814     fi
6815 elif enabled llvm_gcc; then
6816     check_cflags -mllvm -stack-alignment=16
6817 elif enabled clang; then
6818     if enabled x86_32; then
6819         # Clang doesn't support maintaining alignment without assuming the
6820         # same alignment in every function. If 16 byte alignment would be
6821         # enabled, one would also have to either add attribute_align_arg on
6822         # every single entry point into the libraries or enable -mstackrealign
6823         # (doing stack realignment in every single function).
6824         case $target_os in
6825         mingw32|win32|*bsd*)
6826             disable aligned_stack
6827             ;;
6828         *)
6829             check_cflags -mllvm -stack-alignment=16
6830             check_cflags -mstack-alignment=16
6831             ;;
6832         esac
6833     else
6834         check_cflags -mllvm -stack-alignment=16
6835         check_cflags -mstack-alignment=16
6836     fi
6837     check_cflags -Qunused-arguments
6838     check_cflags -Werror=implicit-function-declaration
6839     check_cflags -Werror=missing-prototypes
6840     check_cflags -Werror=return-type
6841 elif enabled cparser; then
6842     add_cflags -Wno-missing-variable-declarations
6843     add_cflags -Wno-empty-statement
6844 elif enabled armcc; then
6845     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6846     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6847     # 2523: use of inline assembly is deprecated
6848     add_cflags -W${armcc_opt},--diag_suppress=2523
6849     add_cflags -W${armcc_opt},--diag_suppress=1207
6850     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6851     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6852     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6853     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6854 elif enabled pathscale; then
6855     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6856     disable inline_asm
6857 elif enabled_any msvc icl; then
6858     enabled x86_32 && disable aligned_stack
6859     enabled_all x86_32 debug && add_cflags -Oy-
6860     enabled debug && add_ldflags -debug
6861     enable pragma_deprecated
6862     if enabled icl; then
6863         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6864         # (correctly) on icl 13.x.
6865         test_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6866             add_cflags -Qansi-alias
6867         # Some inline asm is not compilable in debug
6868         if enabled debug; then
6869             disable ebp_available
6870             disable ebx_available
6871         fi
6872     fi
6873     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6874     check_cpp_condition log2 crtversion.h "_VC_CRT_MAJOR_VERSION >= 12"
6875     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6876     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6877     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6878     # MSVC 2013 and newer can handle it fine.
6879     # If this declspec fails, force including stdlib.h before the restrict redefinition
6880     # happens in config.h.
6881     if [ $restrict_keyword != restrict ]; then
6882         test_cc <<EOF || add_cflags -FIstdlib.h
6883 __declspec($restrict_keyword) void *foo(int);
6884 EOF
6885     fi
6886     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6887     # Issue has been fixed in MSVC v19.00.24218.
6888     test_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6889         check_cflags -d2SSAOptimizer-
6890     # enable utf-8 source processing on VS2015 U2 and newer
6891     test_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6892         add_cflags -utf-8
6893 fi
6894
6895 for pfx in "" host_; do
6896     varname=${pfx%_}cc_type
6897     eval "type=\$$varname"
6898     if [ "$type" = "msvc" ]; then
6899         test_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6900 static inline int foo(int a) { return a; }
6901 EOF
6902     fi
6903 done
6904
6905 case $as_type in
6906     clang)
6907         add_asflags -Qunused-arguments
6908     ;;
6909 esac
6910
6911 case $ld_type in
6912     clang)
6913         check_ldflags -Qunused-arguments
6914     ;;
6915 esac
6916
6917 enable frame_thread_encoder
6918
6919 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6920
6921 check_deps $CONFIG_LIST       \
6922            $CONFIG_EXTRA      \
6923            $HAVE_LIST         \
6924            $ALL_COMPONENTS    \
6925
6926 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"
6927 enabled avresample && warn "Building with deprecated library libavresample"
6928
6929 case $target_os in
6930 haiku)
6931     disable memalign
6932     disable posix_memalign
6933     ;;
6934 *-dos|freedos|opendos)
6935     if test_cpp_condition sys/version.h "defined(__DJGPP__) && __DJGPP__ == 2 && __DJGPP_MINOR__ == 5"; then
6936         disable memalign
6937     fi
6938     ;;
6939 esac
6940
6941 flatten_extralibs(){
6942     nested_entries=
6943     list_name=$1
6944     eval list=\$${1}
6945     for entry in $list; do
6946         entry_copy=$entry
6947         resolve entry_copy
6948         flat_entries=
6949         for e in $entry_copy; do
6950             case $e in
6951                 *_extralibs) nested_entries="$nested_entries$e ";;
6952                           *) flat_entries="$flat_entries$e ";;
6953             esac
6954         done
6955         eval $entry="\$flat_entries"
6956     done
6957     append $list_name "$nested_entries"
6958
6959     resolve nested_entries
6960     if test -n "$(filter '*_extralibs' $nested_entries)"; then
6961         flatten_extralibs $list_name
6962     fi
6963 }
6964
6965 flatten_extralibs_wrapper(){
6966     list_name=$1
6967     flatten_extralibs $list_name
6968     unique $list_name
6969     resolve $list_name
6970     eval $list_name=\$\(\$ldflags_filter \$$list_name\)
6971     eval printf \''%s'\' \""\$$list_name"\"
6972 }
6973
6974 for linkunit in $LIBRARY_LIST; do
6975     unset current_extralibs
6976     eval components=\$$(toupper ${linkunit})_COMPONENTS_LIST
6977     for comp in ${components}; do
6978         enabled $comp || continue
6979         comp_extralibs="${comp}_extralibs"
6980         append current_extralibs $comp_extralibs
6981     done
6982     eval prepend ${linkunit}_extralibs $current_extralibs
6983 done
6984
6985 for linkunit in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
6986     eval ${linkunit}_extralibs=\$\(flatten_extralibs_wrapper ${linkunit}_extralibs\)
6987 done
6988
6989 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6990
6991 for thread in $THREADS_LIST; do
6992     if enabled $thread; then
6993         test -n "$thread_type" &&
6994             die "ERROR: Only one thread type must be selected." ||
6995             thread_type="$thread"
6996     fi
6997 done
6998
6999 if disabled stdatomic; then
7000     if enabled atomics_gcc; then
7001         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
7002     elif enabled atomics_win32; then
7003         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
7004     elif enabled atomics_suncc; then
7005         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
7006     elif enabled pthreads; then
7007         add_compat atomics/pthread/stdatomic.o
7008         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
7009     else
7010         enabled threads && die "Threading is enabled, but no atomics are available"
7011         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
7012     fi
7013 fi
7014
7015 # Check if requested libraries were found.
7016 for lib in $AUTODETECT_LIBS; do
7017     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
7018 done
7019
7020 enabled zlib && add_cppflags -DZLIB_CONST
7021
7022 # conditional library dependencies, in any order
7023 enabled afftdn_filter       && prepend avfilter_deps "avcodec"
7024 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
7025 enabled afir_filter         && prepend avfilter_deps "avcodec"
7026 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
7027 enabled aresample_filter    && prepend avfilter_deps "swresample"
7028 enabled atempo_filter       && prepend avfilter_deps "avcodec"
7029 enabled bm3d_filter         && prepend avfilter_deps "avcodec"
7030 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
7031 enabled convolve_filter     && prepend avfilter_deps "avcodec"
7032 enabled deconvolve_filter   && prepend avfilter_deps "avcodec"
7033 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
7034 enabled elbg_filter         && prepend avfilter_deps "avcodec"
7035 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
7036 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
7037 enabled firequalizer_filter && prepend avfilter_deps "avcodec"
7038 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
7039 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
7040 enabled pan_filter          && prepend avfilter_deps "swresample"
7041 enabled pp_filter           && prepend avfilter_deps "postproc"
7042 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
7043 enabled resample_filter && prepend avfilter_deps "avresample"
7044 enabled sab_filter          && prepend avfilter_deps "swscale"
7045 enabled scale_filter    && prepend avfilter_deps "swscale"
7046 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
7047 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
7048 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
7049 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
7050 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
7051 enabled signature_filter    && prepend avfilter_deps "avcodec avformat"
7052 enabled smartblur_filter    && prepend avfilter_deps "swscale"
7053 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
7054 enabled spp_filter          && prepend avfilter_deps "avcodec"
7055 enabled sr_filter           && prepend avfilter_deps "avformat swscale"
7056 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
7057 enabled uspp_filter         && prepend avfilter_deps "avcodec"
7058 enabled zoompan_filter      && prepend avfilter_deps "swscale"
7059
7060 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
7061
7062 #FIXME
7063 enabled_any sdl2_outdev opengl_outdev && enabled sdl2 &&
7064     add_cflags $(filter_out '-Dmain=SDL_main' $sdl2_cflags)
7065
7066 enabled opus_decoder    && prepend avcodec_deps "swresample"
7067
7068 # reorder the items at var $1 to align with the items order at var $2 .
7069 # die if an item at $1 is not at $2 .
7070 reorder_by(){
7071     eval rb_in=\$$1
7072     eval rb_ordered=\$$2
7073
7074     for rb in $rb_in; do
7075         is_in $rb $rb_ordered || die "$rb at \$$1 is not at \$$2"
7076     done
7077
7078     rb_out=
7079     for rb in $rb_ordered; do
7080         is_in $rb $rb_in && rb_out="$rb_out$rb "
7081     done
7082     eval $1=\$rb_out
7083 }
7084
7085 # deps-expand fflib $1:  N x {append all expanded deps; unique}
7086 # within a set of N items, N expansions are enough to expose a cycle.
7087 expand_deps(){
7088     unique ${1}_deps  # required for the early break test.
7089     for dummy in $LIBRARY_LIST; do  # N iteratios
7090         eval deps=\$${1}_deps
7091         append ${1}_deps $(map 'eval echo \$${v}_deps' $deps)
7092         unique ${1}_deps
7093         eval '[ ${#deps} = ${#'${1}_deps'} ]' && break  # doesn't expand anymore
7094     done
7095
7096     eval is_in $1 \$${1}_deps && die "Dependency cycle at ${1}_deps"
7097     reorder_by ${1}_deps LIBRARY_LIST  # linking order is expected later
7098 }
7099
7100 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
7101 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
7102
7103 map 'expand_deps $v' $LIBRARY_LIST
7104
7105 if test "$quiet" != "yes"; then
7106
7107 echo "install prefix            $prefix"
7108 echo "source path               $source_path"
7109 echo "C compiler                $cc"
7110 echo "C library                 $libc_type"
7111 if test "$host_cc" != "$cc"; then
7112     echo "host C compiler           $host_cc"
7113     echo "host C library            $host_libc_type"
7114 fi
7115 echo "ARCH                      $arch ($cpu)"
7116 if test "$build_suffix" != ""; then
7117     echo "build suffix              $build_suffix"
7118 fi
7119 if test "$progs_suffix" != ""; then
7120     echo "progs suffix              $progs_suffix"
7121 fi
7122 if test "$extra_version" != ""; then
7123     echo "version string suffix     $extra_version"
7124 fi
7125 echo "big-endian                ${bigendian-no}"
7126 echo "runtime cpu detection     ${runtime_cpudetect-no}"
7127 if enabled x86; then
7128     echo "standalone assembly       ${x86asm-no}"
7129     echo "x86 assembler             ${x86asmexe}"
7130     echo "MMX enabled               ${mmx-no}"
7131     echo "MMXEXT enabled            ${mmxext-no}"
7132     echo "3DNow! enabled            ${amd3dnow-no}"
7133     echo "3DNow! extended enabled   ${amd3dnowext-no}"
7134     echo "SSE enabled               ${sse-no}"
7135     echo "SSSE3 enabled             ${ssse3-no}"
7136     echo "AESNI enabled             ${aesni-no}"
7137     echo "AVX enabled               ${avx-no}"
7138     echo "AVX2 enabled              ${avx2-no}"
7139     echo "AVX-512 enabled           ${avx512-no}"
7140     echo "XOP enabled               ${xop-no}"
7141     echo "FMA3 enabled              ${fma3-no}"
7142     echo "FMA4 enabled              ${fma4-no}"
7143     echo "i686 features enabled     ${i686-no}"
7144     echo "CMOV is fast              ${fast_cmov-no}"
7145     echo "EBX available             ${ebx_available-no}"
7146     echo "EBP available             ${ebp_available-no}"
7147 fi
7148 if enabled aarch64; then
7149     echo "NEON enabled              ${neon-no}"
7150     echo "VFP enabled               ${vfp-no}"
7151 fi
7152 if enabled arm; then
7153     echo "ARMv5TE enabled           ${armv5te-no}"
7154     echo "ARMv6 enabled             ${armv6-no}"
7155     echo "ARMv6T2 enabled           ${armv6t2-no}"
7156     echo "VFP enabled               ${vfp-no}"
7157     echo "NEON enabled              ${neon-no}"
7158     echo "THUMB enabled             ${thumb-no}"
7159 fi
7160 if enabled mips; then
7161     echo "MIPS FPU enabled          ${mipsfpu-no}"
7162     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
7163     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
7164     echo "MIPS MSA enabled          ${msa-no}"
7165     echo "MIPS MSA2 enabled         ${msa2-no}"
7166     echo "LOONGSON MMI enabled      ${mmi-no}"
7167 fi
7168 if enabled ppc; then
7169     echo "AltiVec enabled           ${altivec-no}"
7170     echo "VSX enabled               ${vsx-no}"
7171     echo "POWER8 enabled            ${power8-no}"
7172     echo "PPC 4xx optimizations     ${ppc4xx-no}"
7173     echo "dcbzl available           ${dcbzl-no}"
7174 fi
7175 echo "debug symbols             ${debug-no}"
7176 echo "strip symbols             ${stripping-no}"
7177 echo "optimize for size         ${small-no}"
7178 echo "optimizations             ${optimizations-no}"
7179 echo "static                    ${static-no}"
7180 echo "shared                    ${shared-no}"
7181 echo "postprocessing support    ${postproc-no}"
7182 echo "network support           ${network-no}"
7183 echo "threading support         ${thread_type-no}"
7184 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
7185 echo "texi2html enabled         ${texi2html-no}"
7186 echo "perl enabled              ${perl-no}"
7187 echo "pod2man enabled           ${pod2man-no}"
7188 echo "makeinfo enabled          ${makeinfo-no}"
7189 echo "makeinfo supports HTML    ${makeinfo_html-no}"
7190 test -n "$random_seed" &&
7191     echo "random seed               ${random_seed}"
7192 echo
7193
7194 echo "External libraries:"
7195 print_enabled '' $EXTERNAL_LIBRARY_LIST $EXTERNAL_AUTODETECT_LIBRARY_LIST | print_in_columns
7196 echo
7197
7198 echo "External libraries providing hardware acceleration:"
7199 print_enabled '' $HWACCEL_LIBRARY_LIST $HWACCEL_AUTODETECT_LIBRARY_LIST | print_in_columns
7200 echo
7201
7202 echo "Libraries:"
7203 print_enabled '' $LIBRARY_LIST | print_in_columns
7204 echo
7205
7206 echo "Programs:"
7207 print_enabled '' $PROGRAM_LIST | print_in_columns
7208 echo
7209
7210 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
7211     echo "Enabled ${type}s:"
7212     eval list=\$$(toupper $type)_LIST
7213     print_enabled '_*' $list | print_in_columns
7214     echo
7215 done
7216
7217 if test -n "$ignore_tests"; then
7218     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
7219     echo "Ignored FATE tests:"
7220     echo $ignore_tests | print_in_columns
7221     echo
7222 fi
7223
7224 echo "License: $license"
7225
7226 fi # test "$quiet" != "yes"
7227
7228 if test -n "$WARN_IF_GETS_DISABLED_LIST"; then
7229     for cfg in $WARN_IF_GETS_DISABLED_LIST; do
7230         if disabled $cfg; then
7231             varname=${cfg}_disable_reason
7232             eval "warn \"Disabled $cfg because \$$varname\""
7233         fi
7234     done
7235 fi
7236
7237 if test -n "$WARNINGS"; then
7238     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
7239     enabled fatal_warnings && exit 1
7240 fi
7241
7242 test -e Makefile || echo "include $source_path/Makefile" > Makefile
7243
7244 esc(){
7245     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
7246 }
7247
7248 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" > ffbuild/config.fate
7249
7250 enabled stripping || strip="echo skipping strip"
7251 enabled stripping || striptype=""
7252
7253 config_files="$TMPH ffbuild/config.mak doc/config.texi"
7254
7255 cat > ffbuild/config.mak <<EOF
7256 # Automatically generated by configure - do not modify!
7257 ifndef FFMPEG_CONFIG_MAK
7258 FFMPEG_CONFIG_MAK=1
7259 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
7260 prefix=$prefix
7261 LIBDIR=\$(DESTDIR)$libdir
7262 SHLIBDIR=\$(DESTDIR)$shlibdir
7263 INCDIR=\$(DESTDIR)$incdir
7264 BINDIR=\$(DESTDIR)$bindir
7265 DATADIR=\$(DESTDIR)$datadir
7266 DOCDIR=\$(DESTDIR)$docdir
7267 MANDIR=\$(DESTDIR)$mandir
7268 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
7269 INSTALL_NAME_DIR=$install_name_dir
7270 SRC_PATH=$source_path
7271 SRC_LINK=$source_link
7272 ifndef MAIN_MAKEFILE
7273 SRC_PATH:=\$(SRC_PATH:.%=..%)
7274 endif
7275 CC_IDENT=$cc_ident
7276 ARCH=$arch
7277 INTRINSICS=$intrinsics
7278 EXTERN_PREFIX=$extern_prefix
7279 CC=$cc
7280 CXX=$cxx
7281 AS=$as
7282 OBJCC=$objcc
7283 LD=$ld
7284 DEPCC=$dep_cc
7285 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
7286 DEPAS=$as
7287 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
7288 X86ASM=$x86asmexe
7289 DEPX86ASM=$x86asmexe
7290 DEPX86ASMFLAGS=\$(X86ASMFLAGS)
7291 AR=$ar
7292 ARFLAGS=$arflags
7293 AR_O=$ar_o
7294 AR_CMD=$ar
7295 NM_CMD=$nm
7296 RANLIB=$ranlib
7297 STRIP=$strip
7298 STRIPTYPE=$striptype
7299 NVCC=$nvcc
7300 CP=cp -p
7301 LN_S=$ln_s
7302 CPPFLAGS=$CPPFLAGS
7303 CFLAGS=$CFLAGS
7304 CXXFLAGS=$CXXFLAGS
7305 OBJCFLAGS=$OBJCFLAGS
7306 ASFLAGS=$ASFLAGS
7307 NVCCFLAGS=$nvccflags
7308 AS_C=$AS_C
7309 AS_O=$AS_O
7310 OBJCC_C=$OBJCC_C
7311 OBJCC_E=$OBJCC_E
7312 OBJCC_O=$OBJCC_O
7313 CC_C=$CC_C
7314 CC_E=$CC_E
7315 CC_O=$CC_O
7316 CXX_C=$CXX_C
7317 CXX_O=$CXX_O
7318 NVCC_C=$NVCC_C
7319 NVCC_O=$NVCC_O
7320 LD_O=$LD_O
7321 X86ASM_O=$X86ASM_O
7322 LD_LIB=$LD_LIB
7323 LD_PATH=$LD_PATH
7324 DLLTOOL=$dlltool
7325 WINDRES=$windres
7326 DEPWINDRES=$dep_cc
7327 DOXYGEN=$doxygen
7328 LDFLAGS=$LDFLAGS
7329 LDEXEFLAGS=$LDEXEFLAGS
7330 LDSOFLAGS=$LDSOFLAGS
7331 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
7332 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
7333 X86ASMFLAGS=$X86ASMFLAGS
7334 BUILDSUF=$build_suffix
7335 PROGSSUF=$progs_suffix
7336 FULLNAME=$FULLNAME
7337 LIBPREF=$LIBPREF
7338 LIBSUF=$LIBSUF
7339 LIBNAME=$LIBNAME
7340 SLIBPREF=$SLIBPREF
7341 SLIBSUF=$SLIBSUF
7342 EXESUF=$EXESUF
7343 EXTRA_VERSION=$extra_version
7344 CCDEP=$CCDEP
7345 CXXDEP=$CXXDEP
7346 CCDEP_FLAGS=$CCDEP_FLAGS
7347 ASDEP=$ASDEP
7348 ASDEP_FLAGS=$ASDEP_FLAGS
7349 X86ASMDEP=$X86ASMDEP
7350 X86ASMDEP_FLAGS=$X86ASMDEP_FLAGS
7351 CC_DEPFLAGS=$CC_DEPFLAGS
7352 AS_DEPFLAGS=$AS_DEPFLAGS
7353 X86ASM_DEPFLAGS=$X86ASM_DEPFLAGS
7354 HOSTCC=$host_cc
7355 HOSTLD=$host_ld
7356 HOSTCFLAGS=$host_cflags
7357 HOSTCPPFLAGS=$host_cppflags
7358 HOSTEXESUF=$HOSTEXESUF
7359 HOSTLDFLAGS=$host_ldflags
7360 HOSTEXTRALIBS=$host_extralibs
7361 DEPHOSTCC=$host_cc
7362 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
7363 HOSTCCDEP=$HOSTCCDEP
7364 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
7365 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
7366 HOSTCC_C=$HOSTCC_C
7367 HOSTCC_O=$HOSTCC_O
7368 HOSTLD_O=$HOSTLD_O
7369 TARGET_EXEC=$target_exec $target_exec_args
7370 TARGET_PATH=$target_path
7371 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
7372 CFLAGS-ffplay=${sdl2_cflags}
7373 CFLAGS_HEADERS=$CFLAGS_HEADERS
7374 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
7375 EXTRALIBS=$extralibs
7376 COMPAT_OBJS=$compat_objs
7377 INSTALL=$install
7378 LIBTARGET=${LIBTARGET}
7379 SLIBNAME=${SLIBNAME}
7380 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
7381 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
7382 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
7383 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
7384 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
7385 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
7386 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
7387 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
7388 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
7389 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
7390 NOREDZONE_FLAGS=$noredzone_flags
7391 LIBFUZZER_PATH=$libfuzzer_path
7392 IGNORE_TESTS=$ignore_tests
7393 EOF
7394
7395 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> ffbuild/config.mak' $LIBRARY_LIST
7396
7397 for entry in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
7398     eval echo "EXTRALIBS-${entry}=\$${entry}_extralibs" >> ffbuild/config.mak
7399 done
7400
7401 cat > $TMPH <<EOF
7402 /* Automatically generated by configure - do not modify! */
7403 #ifndef FFMPEG_CONFIG_H
7404 #define FFMPEG_CONFIG_H
7405 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
7406 #define FFMPEG_LICENSE "$(c_escape $license)"
7407 #define CONFIG_THIS_YEAR 2019
7408 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
7409 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
7410 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
7411 #define av_restrict $restrict_keyword
7412 #define EXTERN_PREFIX "${extern_prefix}"
7413 #define EXTERN_ASM ${extern_prefix}
7414 #define BUILDSUF "$build_suffix"
7415 #define SLIBSUF "$SLIBSUF"
7416 #define HAVE_MMX2 HAVE_MMXEXT
7417 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
7418 EOF
7419
7420 test -n "$assert_level" &&
7421     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
7422
7423 test -n "$malloc_prefix" &&
7424     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
7425
7426 if enabled x86asm; then
7427     append config_files $TMPASM
7428     cat > $TMPASM <<EOF
7429 ; Automatically generated by configure - do not modify!
7430 EOF
7431 fi
7432
7433 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
7434
7435
7436 mkdir -p doc
7437 mkdir -p tests
7438 mkdir -p tests/api
7439 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
7440
7441 print_config ARCH_   "$config_files" $ARCH_LIST
7442 print_config HAVE_   "$config_files" $HAVE_LIST
7443 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
7444                                      $CONFIG_EXTRA      \
7445                                      $ALL_COMPONENTS    \
7446
7447 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
7448 echo "endif # FFMPEG_CONFIG_MAK" >> ffbuild/config.mak
7449
7450 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
7451 cp_if_changed $TMPH config.h
7452 touch ffbuild/.config
7453
7454 enabled x86asm && cp_if_changed $TMPASM config.asm
7455
7456 cat > $TMPH <<EOF
7457 /* Generated by ffmpeg configure */
7458 #ifndef AVUTIL_AVCONFIG_H
7459 #define AVUTIL_AVCONFIG_H
7460 EOF
7461
7462 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
7463
7464 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
7465
7466 cp_if_changed $TMPH libavutil/avconfig.h
7467
7468 # full_filter_name_foo=vf_foo
7469 # full_filter_name_bar=asrc_bar
7470 # ...
7471 eval "$(sed -n "s/^extern AVFilter ff_\([avfsinkrc]\{2,5\}\)_\(.*\);/full_filter_name_\2=\1_\2/p" $source_path/libavfilter/allfilters.c)"
7472
7473 # generate the lists of enabled components
7474 print_enabled_components(){
7475     file=$1
7476     struct_name=$2
7477     name=$3
7478     shift 3
7479     echo "static const $struct_name * const $name[] = {" > $TMPH
7480     for c in $*; do
7481         if enabled $c; then
7482             case $name in
7483                 filter_list)
7484                     eval c=\$full_filter_name_${c%_filter}
7485                 ;;
7486                 indev_list)
7487                     c=${c%_indev}_demuxer
7488                 ;;
7489                 outdev_list)
7490                     c=${c%_outdev}_muxer
7491                 ;;
7492             esac
7493             printf "    &ff_%s,\n" $c >> $TMPH
7494         fi
7495     done
7496     if [ "$name" = "filter_list" ]; then
7497         for c in asrc_abuffer vsrc_buffer asink_abuffer vsink_buffer; do
7498             printf "    &ff_%s,\n" $c >> $TMPH
7499         done
7500     fi
7501     echo "    NULL };" >> $TMPH
7502     cp_if_changed $TMPH $file
7503 }
7504
7505 print_enabled_components libavfilter/filter_list.c AVFilter filter_list $FILTER_LIST
7506 print_enabled_components libavcodec/codec_list.c AVCodec codec_list $CODEC_LIST
7507 print_enabled_components libavcodec/parser_list.c AVCodecParser parser_list $PARSER_LIST
7508 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
7509 print_enabled_components libavformat/demuxer_list.c AVInputFormat demuxer_list $DEMUXER_LIST
7510 print_enabled_components libavformat/muxer_list.c AVOutputFormat muxer_list $MUXER_LIST
7511 print_enabled_components libavdevice/indev_list.c AVInputFormat indev_list $INDEV_LIST
7512 print_enabled_components libavdevice/outdev_list.c AVOutputFormat outdev_list $OUTDEV_LIST
7513 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
7514
7515 # Settings for pkg-config files
7516
7517 cat > $TMPH <<EOF
7518 # Automatically generated by configure - do not modify!
7519 shared=$shared
7520 build_suffix=$build_suffix
7521 prefix=$prefix
7522 libdir=$libdir
7523 incdir=$incdir
7524 rpath=$(enabled rpath && echo "-Wl,-rpath,\${libdir}")
7525 source_path=${source_path}
7526 LIBPREF=${LIBPREF}
7527 LIBSUF=${LIBSUF}
7528 extralibs_avutil="$avutil_extralibs"
7529 extralibs_avcodec="$avcodec_extralibs"
7530 extralibs_avformat="$avformat_extralibs"
7531 extralibs_avdevice="$avdevice_extralibs"
7532 extralibs_avfilter="$avfilter_extralibs"
7533 extralibs_avresample="$avresample_extralibs"
7534 extralibs_postproc="$postproc_extralibs"
7535 extralibs_swscale="$swscale_extralibs"
7536 extralibs_swresample="$swresample_extralibs"
7537 EOF
7538
7539 for lib in $LIBRARY_LIST; do
7540     lib_deps="$(eval echo \$${lib}_deps)"
7541     echo ${lib}_deps=\"$lib_deps\" >> $TMPH
7542 done
7543
7544 cp_if_changed $TMPH ffbuild/config.sh