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-cuvid          disable Nvidia CUVID support [autodetect]
 326   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
 327   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
 328   --disable-ffnvcodec      disable dynamically linked Nvidia code [autodetect]
 329   --enable-libdrm          enable DRM code (Linux) [no]
 330   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
 331   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
 332   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
 333   --disable-nvdec          disable Nvidia video decoding acceleration (via hwaccel) [autodetect]
 334   --disable-nvenc          disable Nvidia video encoding code [autodetect]
 335   --enable-omx             enable OpenMAX IL code [no]
 336   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
 337   --enable-rkmpp           enable Rockchip Media Process Platform code [no]
 338   --disable-v4l2-m2m       disable V4L2 mem2mem code [autodetect]
 339   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
 340   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
 341   --disable-videotoolbox   disable VideoToolbox code [autodetect]
 342
 343 Toolchain options:
 344   --arch=ARCH              select architecture [$arch]
 345   --cpu=CPU                select the minimum required CPU (affects
 346                            instruction selection, may crash on older CPUs)
 347   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 348   --progs-suffix=SUFFIX    program name suffix []
 349   --enable-cross-compile   assume a cross-compiler is used
 350   --sysroot=PATH           root of cross-build tree
 351   --sysinclude=PATH        location of cross-build system headers
 352   --target-os=OS           compiler targets OS [$target_os]
 353   --target-exec=CMD        command to run executables on target
 354   --target-path=DIR        path to view of build directory on target
 355   --target-samples=DIR     path to samples directory on target
 356   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 357   --toolchain=NAME         set tool defaults according to NAME
 358                            (gcc-asan, clang-asan, gcc-msan, clang-msan,
 359                            gcc-tsan, clang-tsan, gcc-usan, clang-usan,
 360                            valgrind-massif, valgrind-memcheck,
 361                            msvc, icl, gcov, llvm-cov, hardened)
 362   --nm=NM                  use nm tool NM [$nm_default]
 363   --ar=AR                  use archive tool AR [$ar_default]
 364   --as=AS                  use assembler AS [$as_default]
 365   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
 366   --strip=STRIP            use strip tool STRIP [$strip_default]
 367   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 368   --x86asmexe=EXE          use nasm-compatible assembler EXE [$x86asmexe_default]
 369   --cc=CC                  use C compiler CC [$cc_default]
 370   --cxx=CXX                use C compiler CXX [$cxx_default]
 371   --objcc=OCC              use ObjC compiler OCC [$cc_default]
 372   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 373   --nvcc=NVCC              use Nvidia CUDA compiler NVCC [$nvcc_default]
 374   --ld=LD                  use linker LD [$ld_default]
 375   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 376   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 377   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 378   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
 379   --host-cc=HOSTCC         use host C compiler HOSTCC
 380   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 381   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 382   --host-ld=HOSTLD         use host linker HOSTLD
 383   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 384   --host-extralibs=HLIBS   use libs HLIBS when linking for host
 385   --host-os=OS             compiler host OS [$target_os]
 386   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 387   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 388   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
 389   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 390   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 391   --extra-ldsoflags=ELDFLAGS add ELDFLAGS to LDSOFLAGS [$LDSOFLAGS]
 392   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 393   --extra-version=STRING   version string suffix []
 394   --optflags=OPTFLAGS      override optimization-related compiler flags
 395   --nvccflags=NVCCFLAGS    override nvcc flags [$nvccflags_default]
 396   --build-suffix=SUFFIX    library name suffix []
 397   --enable-pic             build position-independent code
 398   --enable-thumb           compile for Thumb instruction set
 399   --enable-lto             use link-time optimization
 400   --env="ENV=override"     override the environment variables
 401
 402 Advanced options (experts only):
 403   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 404   --custom-allocator=NAME  use a supported custom allocator
 405   --disable-symver         disable symbol versioning
 406   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 407   --disable-safe-bitstream-reader
 408                            disable buffer boundary checking in bitreaders
 409                            (faster, but may crash)
 410   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
 411
 412 Optimization options (experts only):
 413   --disable-asm            disable all assembly optimizations
 414   --disable-altivec        disable AltiVec optimizations
 415   --disable-vsx            disable VSX optimizations
 416   --disable-power8         disable POWER8 optimizations
 417   --disable-amd3dnow       disable 3DNow! optimizations
 418   --disable-amd3dnowext    disable 3DNow! extended optimizations
 419   --disable-mmx            disable MMX optimizations
 420   --disable-mmxext         disable MMXEXT optimizations
 421   --disable-sse            disable SSE optimizations
 422   --disable-sse2           disable SSE2 optimizations
 423   --disable-sse3           disable SSE3 optimizations
 424   --disable-ssse3          disable SSSE3 optimizations
 425   --disable-sse4           disable SSE4 optimizations
 426   --disable-sse42          disable SSE4.2 optimizations
 427   --disable-avx            disable AVX optimizations
 428   --disable-xop            disable XOP optimizations
 429   --disable-fma3           disable FMA3 optimizations
 430   --disable-fma4           disable FMA4 optimizations
 431   --disable-avx2           disable AVX2 optimizations
 432   --disable-avx512         disable AVX-512 optimizations
 433   --disable-aesni          disable AESNI optimizations
 434   --disable-armv5te        disable armv5te optimizations
 435   --disable-armv6          disable armv6 optimizations
 436   --disable-armv6t2        disable armv6t2 optimizations
 437   --disable-vfp            disable VFP optimizations
 438   --disable-neon           disable NEON optimizations
 439   --disable-inline-asm     disable use of inline assembly
 440   --disable-x86asm         disable use of standalone x86 assembly
 441   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
 442   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 443   --disable-msa            disable MSA optimizations
 444   --disable-mipsfpu        disable floating point MIPS optimizations
 445   --disable-mmi            disable Loongson SIMD optimizations
 446   --disable-fast-unaligned consider unaligned accesses slow
 447
 448 Developer options (useful when working on FFmpeg itself):
 449   --disable-debug          disable debugging symbols
 450   --enable-debug=LEVEL     set the debug level [$debuglevel]
 451   --disable-optimizations  disable compiler optimizations
 452   --enable-extra-warnings  enable more compiler warnings
 453   --disable-stripping      disable stripping of executables and shared libraries
 454   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 455                            2 causes a slowdown at runtime.
 456   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 457   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 458                            leaks and errors, using the specified valgrind binary.
 459                            Cannot be combined with --target-exec
 460   --enable-ftrapv          Trap arithmetic overflows
 461   --samples=PATH           location of test samples for FATE, if not set use
 462                            \$FATE_SAMPLES at make invocation time.
 463   --enable-neon-clobber-test check NEON registers for clobbering (should be
 464                            used only for debugging purposes)
 465   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 466                            should be used only for debugging purposes)
 467   --enable-random          randomly enable/disable components
 468   --disable-random
 469   --enable-random=LIST     randomly enable/disable specific components or
 470   --disable-random=LIST    component groups. LIST is a comma-separated list
 471                            of NAME[:PROB] entries where NAME is a component
 472                            (group) and PROB the probability associated with
 473                            NAME (default 0.5).
 474   --random-seed=VALUE      seed value for --enable/disable-random
 475   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 476                            (only applies to --disable-optimizations builds)
 477   --enable-ossfuzz         Enable building fuzzer tool
 478   --libfuzzer=PATH         path to libfuzzer
 479   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
 480                            in the name) of tests whose result is ignored
 481   --enable-linux-perf      enable Linux Performance Monitor API
 482
 483 NOTE: Object files are built at the place where configure is launched.
 484 EOF
 485   exit 0
 486 }
 487
 488 if test -t 1 && which tput >/dev/null 2>&1; then
 489     ncolors=$(tput colors)
 490     if test -n "$ncolors" && test $ncolors -ge 8; then
 491         bold_color=$(tput bold)
 492         warn_color=$(tput setaf 3)
 493         error_color=$(tput setaf 1)
 494         reset_color=$(tput sgr0)
 495     fi
 496     # 72 used instead of 80 since that's the default of pr
 497     ncols=$(tput cols)
 498 fi
 499 : ${ncols:=72}
 500
 501 log(){
 502     echo "$@" >> $logfile
 503 }
 504
 505 log_file(){
 506     log BEGIN $1
 507     pr -n -t $1 >> $logfile
 508     log END $1
 509 }
 510
 511 warn(){
 512     log "WARNING: $*"
 513     WARNINGS="${WARNINGS}WARNING: $*\n"
 514 }
 515
 516 die(){
 517     log "$@"
 518     echo "$error_color$bold_color$@$reset_color"
 519     cat <<EOF
 520
 521 If you think configure made a mistake, make sure you are using the latest
 522 version from Git.  If the latest version fails, report the problem to the
 523 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 524 EOF
 525     if disabled logging; then
 526         cat <<EOF
 527 Rerun configure with logging enabled (do not use --disable-logging), and
 528 include the log this produces with your report.
 529 EOF
 530     else
 531         cat <<EOF
 532 Include the log file "$logfile" produced by configure as this will help
 533 solve the problem.
 534 EOF
 535     fi
 536     exit 1
 537 }
 538
 539 # Avoid locale weirdness, besides we really just want to translate ASCII.
 540 toupper(){
 541     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 542 }
 543
 544 tolower(){
 545     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 546 }
 547
 548 c_escape(){
 549     echo "$*" | sed 's/["\\]/\\\0/g'
 550 }
 551
 552 sh_quote(){
 553     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 554     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 555     echo "$v"
 556 }
 557
 558 cleanws(){
 559     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
 560 }
 561
 562 filter(){
 563     pat=$1
 564     shift
 565     for v; do
 566         eval "case '$v' in $pat) printf '%s ' '$v' ;; esac"
 567     done
 568 }
 569
 570 filter_out(){
 571     pat=$1
 572     shift
 573     for v; do
 574         eval "case '$v' in $pat) ;; *) printf '%s ' '$v' ;; esac"
 575     done
 576 }
 577
 578 map(){
 579     m=$1
 580     shift
 581     for v; do eval $m; done
 582 }
 583
 584 add_suffix(){
 585     suffix=$1
 586     shift
 587     for v; do echo ${v}${suffix}; done
 588 }
 589
 590 remove_suffix(){
 591     suffix=$1
 592     shift
 593     for v; do echo ${v%$suffix}; done
 594 }
 595
 596 set_all(){
 597     value=$1
 598     shift
 599     for var in $*; do
 600         eval $var=$value
 601     done
 602 }
 603
 604 set_weak(){
 605     value=$1
 606     shift
 607     for var; do
 608         eval : \${$var:=$value}
 609     done
 610 }
 611
 612 sanitize_var_name(){
 613     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 614 }
 615
 616 set_sanitized(){
 617     var=$1
 618     shift
 619     eval $(sanitize_var_name "$var")='$*'
 620 }
 621
 622 get_sanitized(){
 623     eval echo \$$(sanitize_var_name "$1")
 624 }
 625
 626 pushvar(){
 627     for pvar in $*; do
 628         eval level=\${${pvar}_level:=0}
 629         eval ${pvar}_${level}="\$$pvar"
 630         eval ${pvar}_level=$(($level+1))
 631     done
 632 }
 633
 634 popvar(){
 635     for pvar in $*; do
 636         eval level=\${${pvar}_level:-0}
 637         test $level = 0 && continue
 638         eval level=$(($level-1))
 639         eval $pvar="\${${pvar}_${level}}"
 640         eval ${pvar}_level=$level
 641         eval unset ${pvar}_${level}
 642     done
 643 }
 644
 645 request(){
 646     for var in $*; do
 647         eval ${var}_requested=yes
 648         eval $var=
 649     done
 650 }
 651
 652 warn_if_gets_disabled(){
 653     for var in $*; do
 654         WARN_IF_GETS_DISABLED_LIST="$WARN_IF_GETS_DISABLED_LIST $var"
 655     done
 656 }
 657
 658 enable(){
 659     set_all yes $*
 660 }
 661
 662 disable(){
 663     set_all no $*
 664 }
 665
 666 disable_with_reason(){
 667     disable $1
 668     eval "${1}_disable_reason=\"$2\""
 669     if requested $1; then
 670         die "ERROR: $1 requested, but $2"
 671     fi
 672 }
 673
 674 enable_weak(){
 675     set_weak yes $*
 676 }
 677
 678 disable_weak(){
 679     set_weak no $*
 680 }
 681
 682 enable_sanitized(){
 683     for var; do
 684         enable $(sanitize_var_name $var)
 685     done
 686 }
 687
 688 disable_sanitized(){
 689     for var; do
 690         disable $(sanitize_var_name $var)
 691     done
 692 }
 693
 694 do_enable_deep(){
 695     for var; do
 696         enabled $var && continue
 697         set -- $var
 698         eval enable_deep \$${var}_select
 699         var=$1
 700         eval enable_deep_weak \$${var}_suggest
 701     done
 702 }
 703
 704 enable_deep(){
 705     do_enable_deep $*
 706     enable $*
 707 }
 708
 709 enable_deep_weak(){
 710     for var; do
 711         disabled $var && continue
 712         set -- $var
 713         do_enable_deep $var
 714         var=$1
 715         enable_weak $var
 716     done
 717 }
 718
 719 requested(){
 720     test "${1#!}" = "$1" && op="=" || op="!="
 721     eval test "x\$${1#!}_requested" $op "xyes"
 722 }
 723
 724 enabled(){
 725     test "${1#!}" = "$1" && op="=" || op="!="
 726     eval test "x\$${1#!}" $op "xyes"
 727 }
 728
 729 disabled(){
 730     test "${1#!}" = "$1" && op="=" || op="!="
 731     eval test "x\$${1#!}" $op "xno"
 732 }
 733
 734 enabled_all(){
 735     for opt; do
 736         enabled $opt || return 1
 737     done
 738 }
 739
 740 disabled_all(){
 741     for opt; do
 742         disabled $opt || return 1
 743     done
 744 }
 745
 746 enabled_any(){
 747     for opt; do
 748         enabled $opt && return 0
 749     done
 750 }
 751
 752 disabled_any(){
 753     for opt; do
 754         disabled $opt && return 0
 755     done
 756     return 1
 757 }
 758
 759 set_default(){
 760     for opt; do
 761         eval : \${$opt:=\$${opt}_default}
 762     done
 763 }
 764
 765 is_in(){
 766     value=$1
 767     shift
 768     for var in $*; do
 769         [ $var = $value ] && return 0
 770     done
 771     return 1
 772 }
 773
 774 # The cfg loop is very hot (several thousands iterations), and in bash also
 775 # potentialy quite slow. Try to abort the iterations early, preferably without
 776 # calling functions. 70%+ of the time cfg is already done or without deps.
 777 check_deps(){
 778     for cfg; do
 779         eval [ x\$${cfg}_checking = xdone ] && continue
 780         eval [ x\$${cfg}_checking = xinprogress ] && die "Circular dependency for $cfg."
 781
 782         eval "
 783         dep_all=\$${cfg}_deps
 784         dep_any=\$${cfg}_deps_any
 785         dep_con=\$${cfg}_conflict
 786         dep_sel=\$${cfg}_select
 787         dep_sgs=\$${cfg}_suggest
 788         dep_ifa=\$${cfg}_if
 789         dep_ifn=\$${cfg}_if_any
 790         "
 791
 792         # most of the time here $cfg has no deps - avoid costly no-op work
 793         if [ "$dep_all$dep_any$dep_con$dep_sel$dep_sgs$dep_ifa$dep_ifn" ]; then
 794             eval ${cfg}_checking=inprogress
 795
 796             set -- $cfg "$dep_all" "$dep_any" "$dep_con" "$dep_sel" "$dep_sgs" "$dep_ifa" "$dep_ifn"
 797             check_deps $dep_all $dep_any $dep_con $dep_sel $dep_sgs $dep_ifa $dep_ifn
 798             cfg=$1; dep_all=$2; dep_any=$3; dep_con=$4; dep_sel=$5 dep_sgs=$6; dep_ifa=$7; dep_ifn=$8
 799
 800             [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 801             [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 802             enabled_all  $dep_all || { disable_with_reason $cfg "not all dependencies are satisfied: $dep_all"; }
 803             enabled_any  $dep_any || { disable_with_reason $cfg "not any dependency is satisfied: $dep_any"; }
 804             disabled_all $dep_con || { disable_with_reason $cfg "some conflicting dependencies are unsatisfied: $dep_con"; }
 805             disabled_any $dep_sel && { disable_with_reason $cfg "some selected dependency is unsatisfied: $dep_sel"; }
 806
 807             enabled $cfg && enable_deep_weak $dep_sel $dep_sgs
 808
 809             for dep in $dep_all $dep_any $dep_sel $dep_sgs; do
 810                 # filter out library deps, these do not belong in extralibs
 811                 is_in $dep $LIBRARY_LIST && continue
 812                 enabled $dep && eval append ${cfg}_extralibs ${dep}_extralibs
 813             done
 814         fi
 815
 816         eval ${cfg}_checking=done
 817     done
 818 }
 819
 820 print_config(){
 821     pfx=$1
 822     files=$2
 823     shift 2
 824     map 'eval echo "$v \${$v:-no}"' "$@" |
 825     awk "BEGIN { split(\"$files\", files) }
 826         {
 827             c = \"$pfx\" toupper(\$1);
 828             v = \$2;
 829             sub(/yes/, 1, v);
 830             sub(/no/,  0, v);
 831             for (f in files) {
 832                 file = files[f];
 833                 if (file ~ /\\.h\$/) {
 834                     printf(\"#define %s %d\\n\", c, v) >>file;
 835                 } else if (file ~ /\\.asm\$/) {
 836                     printf(\"%%define %s %d\\n\", c, v) >>file;
 837                 } else if (file ~ /\\.mak\$/) {
 838                     n = -v ? \"\" : \"!\";
 839                     printf(\"%s%s=yes\\n\", n, c) >>file;
 840                 } else if (file ~ /\\.texi\$/) {
 841                     pre = -v ? \"\" : \"@c \";
 842                     yesno = \$2;
 843                     c2 = tolower(c);
 844                     gsub(/_/, \"-\", c2);
 845                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 846                 }
 847             }
 848         }"
 849 }
 850
 851 print_enabled(){
 852     suf=$1
 853     shift
 854     for v; do
 855         enabled $v && printf "%s\n" ${v%$suf}
 856     done
 857 }
 858
 859 append(){
 860     var=$1
 861     shift
 862     eval "$var=\"\$$var $*\""
 863 }
 864
 865 prepend(){
 866     var=$1
 867     shift
 868     eval "$var=\"$* \$$var\""
 869 }
 870
 871 reverse () {
 872     eval '
 873         reverse_out=
 874         for v in $'$1'; do
 875             reverse_out="$v $reverse_out"
 876         done
 877         '$1'=$reverse_out
 878     '
 879 }
 880
 881 # keeps the last occurence of each non-unique item
 882 unique(){
 883     unique_out=
 884     eval unique_in=\$$1
 885     reverse unique_in
 886     for v in $unique_in; do
 887         # " $unique_out" +space such that every item is surrounded with spaces
 888         case " $unique_out" in *" $v "*) continue; esac  # already in list
 889         unique_out="$unique_out$v "
 890     done
 891     reverse unique_out
 892     eval $1=\$unique_out
 893 }
 894
 895 resolve(){
 896     resolve_out=
 897     eval resolve_in=\$$1
 898     for v in $resolve_in; do
 899         eval 'resolve_out="$resolve_out$'$v' "'
 900     done
 901     eval $1=\$resolve_out
 902 }
 903
 904 add_cppflags(){
 905     append CPPFLAGS "$@"
 906 }
 907
 908 add_cflags(){
 909     append CFLAGS $($cflags_filter "$@")
 910 }
 911
 912 add_cflags_headers(){
 913     append CFLAGS_HEADERS $($cflags_filter "$@")
 914 }
 915
 916 add_cxxflags(){
 917     append CXXFLAGS $($cflags_filter "$@")
 918 }
 919
 920 add_objcflags(){
 921     append OBJCFLAGS $($objcflags_filter "$@")
 922 }
 923
 924 add_asflags(){
 925     append ASFLAGS $($asflags_filter "$@")
 926 }
 927
 928 add_ldflags(){
 929     append LDFLAGS $($ldflags_filter "$@")
 930 }
 931
 932 add_ldexeflags(){
 933     append LDEXEFLAGS $($ldflags_filter "$@")
 934 }
 935
 936 add_ldsoflags(){
 937     append LDSOFLAGS $($ldflags_filter "$@")
 938 }
 939
 940 add_extralibs(){
 941     prepend extralibs $($ldflags_filter "$@")
 942 }
 943
 944 add_stripflags(){
 945     append ASMSTRIPFLAGS "$@"
 946 }
 947
 948 add_host_cppflags(){
 949     append host_cppflags "$@"
 950 }
 951
 952 add_host_cflags(){
 953     append host_cflags $($host_cflags_filter "$@")
 954 }
 955
 956 add_host_ldflags(){
 957     append host_ldflags $($host_ldflags_filter "$@")
 958 }
 959
 960 add_compat(){
 961     append compat_objs $1
 962     shift
 963     map 'add_cppflags -D$v' "$@"
 964 }
 965
 966 test_cmd(){
 967     log "$@"
 968     "$@" >> $logfile 2>&1
 969 }
 970
 971 test_stat(){
 972     log test_stat "$@"
 973     stat "$1" >> $logfile 2>&1
 974 }
 975
 976 cc_e(){
 977     eval printf '%s\\n' $CC_E
 978 }
 979
 980 cc_o(){
 981     eval printf '%s\\n' $CC_O
 982 }
 983
 984 as_o(){
 985     eval printf '%s\\n' $AS_O
 986 }
 987
 988 x86asm_o(){
 989     eval printf '%s\\n' $X86ASM_O
 990 }
 991
 992 ld_o(){
 993     eval printf '%s\\n' $LD_O
 994 }
 995
 996 hostcc_e(){
 997     eval printf '%s\\n' $HOSTCC_E
 998 }
 999
1000 hostcc_o(){
1001     eval printf '%s\\n' $HOSTCC_O
1002 }
1003
1004 nvcc_o(){
1005     eval printf '%s\\n' $NVCC_O
1006 }
1007
1008 test_cc(){
1009     log test_cc "$@"
1010     cat > $TMPC
1011     log_file $TMPC
1012     test_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
1013 }
1014
1015 test_cxx(){
1016     log test_cxx "$@"
1017     cat > $TMPCPP
1018     log_file $TMPCPP
1019     test_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
1020 }
1021
1022 test_objcc(){
1023     log test_objcc "$@"
1024     cat > $TMPM
1025     log_file $TMPM
1026     test_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
1027 }
1028
1029 test_nvcc(){
1030     log test_nvcc "$@"
1031     cat > $TMPCU
1032     log_file $TMPCU
1033     tmpcu_=$TMPCU
1034     tmpo_=$TMPO
1035     [ -x "$(command -v cygpath)" ] && tmpcu_=$(cygpath -m $tmpcu_) && tmpo_=$(cygpath -m $tmpo_)
1036     test_cmd $nvcc -ptx $NVCCFLAGS "$@" $NVCC_C $(nvcc_o $tmpo_) $tmpcu_
1037 }
1038
1039 check_nvcc() {
1040     log check_nvcc "$@"
1041     test_nvcc <<EOF
1042 extern "C" {
1043     __global__ void hello(unsigned char *data) {}
1044 }
1045 EOF
1046 }
1047
1048 test_cpp(){
1049     log test_cpp "$@"
1050     cat > $TMPC
1051     log_file $TMPC
1052     test_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
1053 }
1054
1055 test_as(){
1056     log test_as "$@"
1057     cat > $TMPS
1058     log_file $TMPS
1059     test_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
1060 }
1061
1062 test_x86asm(){
1063     log test_x86asm "$@"
1064     echo "$1" > $TMPASM
1065     log_file $TMPASM
1066     shift
1067     test_cmd $x86asmexe $X86ASMFLAGS -Werror "$@" $(x86asm_o $TMPO) $TMPASM
1068 }
1069
1070 check_cmd(){
1071     log check_cmd "$@"
1072     cmd=$1
1073     disabled $cmd && return
1074     disable $cmd
1075     test_cmd $@ && enable $cmd
1076 }
1077
1078 check_as(){
1079     log check_as "$@"
1080     name=$1
1081     code=$2
1082     shift 2
1083     disable $name
1084     test_as $@ <<EOF && enable $name
1085 $code
1086 EOF
1087 }
1088
1089 check_inline_asm(){
1090     log check_inline_asm "$@"
1091     name="$1"
1092     code="$2"
1093     shift 2
1094     disable $name
1095     test_cc "$@" <<EOF && enable $name
1096 void foo(void){ __asm__ volatile($code); }
1097 EOF
1098 }
1099
1100 check_inline_asm_flags(){
1101     log check_inline_asm_flags "$@"
1102     name="$1"
1103     code="$2"
1104     flags=''
1105     shift 2
1106     while [ "$1" != "" ]; do
1107       append flags $1
1108       shift
1109     done;
1110     disable $name
1111     cat > $TMPC <<EOF
1112 void foo(void){ __asm__ volatile($code); }
1113 EOF
1114     log_file $TMPC
1115     test_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
1116     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
1117 }
1118
1119 check_insn(){
1120     log check_insn "$@"
1121     check_inline_asm ${1}_inline "\"$2\""
1122     check_as ${1}_external "$2"
1123 }
1124
1125 check_x86asm(){
1126     log check_x86asm "$@"
1127     name=$1
1128     shift
1129     disable $name
1130     test_x86asm "$@" && enable $name
1131 }
1132
1133 test_ld(){
1134     log test_ld "$@"
1135     type=$1
1136     shift 1
1137     flags=$(filter_out '-l*|*.so' $@)
1138     libs=$(filter '-l*|*.so' $@)
1139     test_$type $($cflags_filter $flags) || return
1140     flags=$($ldflags_filter $flags)
1141     libs=$($ldflags_filter $libs)
1142     test_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
1143 }
1144
1145 check_ld(){
1146     log check_ld "$@"
1147     type=$1
1148     name=$2
1149     shift 2
1150     disable $name
1151     test_ld $type $@ && enable $name
1152 }
1153
1154 print_include(){
1155     hdr=$1
1156     test "${hdr%.h}" = "${hdr}" &&
1157         echo "#include $hdr"    ||
1158         echo "#include <$hdr>"
1159 }
1160
1161 test_code(){
1162     log test_code "$@"
1163     check=$1
1164     headers=$2
1165     code=$3
1166     shift 3
1167     {
1168         for hdr in $headers; do
1169             print_include $hdr
1170         done
1171         echo "int main(void) { $code; return 0; }"
1172     } | test_$check "$@"
1173 }
1174
1175 check_cppflags(){
1176     log check_cppflags "$@"
1177     test_cpp "$@" <<EOF && append CPPFLAGS "$@"
1178 #include <stdlib.h>
1179 EOF
1180 }
1181
1182 test_cflags(){
1183     log test_cflags "$@"
1184     set -- $($cflags_filter "$@")
1185     test_cc "$@" <<EOF
1186 int x;
1187 EOF
1188 }
1189
1190 check_cflags(){
1191     log check_cflags "$@"
1192     test_cflags "$@" && add_cflags "$@"
1193 }
1194
1195 check_cxxflags(){
1196     log check_cxxflags "$@"
1197     set -- $($cflags_filter "$@")
1198     test_cxx "$@" <<EOF && append CXXFLAGS "$@"
1199 int x;
1200 EOF
1201 }
1202
1203 test_objcflags(){
1204     log test_objcflags "$@"
1205     set -- $($objcflags_filter "$@")
1206     test_objcc "$@" <<EOF
1207 int x;
1208 EOF
1209 }
1210
1211 check_objcflags(){
1212     log check_objcflags "$@"
1213     test_objcflags "$@" && add_objcflags "$@"
1214 }
1215
1216 test_ldflags(){
1217     log test_ldflags "$@"
1218     set -- $($ldflags_filter "$@")
1219     test_ld "cc" "$@" <<EOF
1220 int main(void){ return 0; }
1221 EOF
1222 }
1223
1224 check_ldflags(){
1225     log check_ldflags "$@"
1226     test_ldflags "$@" && add_ldflags "$@"
1227 }
1228
1229 test_stripflags(){
1230     log test_stripflags "$@"
1231     # call test_cc to get a fresh TMPO
1232     test_cc <<EOF
1233 int main(void) { return 0; }
1234 EOF
1235     test_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1236 }
1237
1238 check_stripflags(){
1239     log check_stripflags "$@"
1240     test_stripflags "$@" && add_stripflags "$@"
1241 }
1242
1243 check_headers(){
1244     log check_headers "$@"
1245     headers=$1
1246     shift
1247     disable_sanitized $headers
1248     {
1249         for hdr in $headers; do
1250             print_include $hdr
1251         done
1252         echo "int x;"
1253     } | test_cpp "$@" && enable_sanitized $headers
1254 }
1255
1256 check_header_objcc(){
1257     log check_header_objcc "$@"
1258     rm -f -- "$TMPO"
1259     header=$1
1260     shift
1261     disable_sanitized $header
1262     {
1263        echo "#include <$header>"
1264        echo "int main(void) { return 0; }"
1265     } | test_objcc && test_stat "$TMPO" && enable_sanitized $header
1266 }
1267
1268 check_apple_framework(){
1269     log check_apple_framework "$@"
1270     framework="$1"
1271     name="$(tolower $framework)"
1272     header="${framework}/${framework}.h"
1273     disable $name
1274     check_header_objcc $header &&
1275         enable $name && eval ${name}_extralibs='"-framework $framework"'
1276 }
1277
1278 check_func(){
1279     log check_func "$@"
1280     func=$1
1281     shift
1282     disable $func
1283     test_ld "cc" "$@" <<EOF && enable $func
1284 extern int $func();
1285 int main(void){ $func(); }
1286 EOF
1287 }
1288
1289 check_complexfunc(){
1290     log check_complexfunc "$@"
1291     func=$1
1292     narg=$2
1293     shift 2
1294     test $narg = 2 && args="f, g" || args="f * I"
1295     disable $func
1296     test_ld "cc" "$@" <<EOF && enable $func
1297 #include <complex.h>
1298 #include <math.h>
1299 float foo(complex float f, complex float g) { return $func($args); }
1300 int main(void){ return (int) foo; }
1301 EOF
1302 }
1303
1304 check_mathfunc(){
1305     log check_mathfunc "$@"
1306     func=$1
1307     narg=$2
1308     shift 2
1309     test $narg = 2 && args="f, g" || args="f"
1310     disable $func
1311     test_ld "cc" "$@" <<EOF && enable $func
1312 #include <math.h>
1313 float foo(float f, float g) { return $func($args); }
1314 int main(void){ return (int) foo; }
1315 EOF
1316 }
1317
1318 check_func_headers(){
1319     log check_func_headers "$@"
1320     headers=$1
1321     funcs=$2
1322     shift 2
1323     {
1324         for hdr in $headers; do
1325             print_include $hdr
1326         done
1327         echo "#include <stdint.h>"
1328         for func in $funcs; do
1329             echo "long check_$func(void) { return (long) $func; }"
1330         done
1331         echo "int main(void) { int ret = 0;"
1332         # LTO could optimize out the test functions without this
1333         for func in $funcs; do
1334             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1335         done
1336         echo "return ret; }"
1337     } | test_ld "cc" "$@" && enable $funcs && enable_sanitized $headers
1338 }
1339
1340 check_class_headers_cpp(){
1341     log check_class_headers_cpp "$@"
1342     headers=$1
1343     classes=$2
1344     shift 2
1345     {
1346         for hdr in $headers; do
1347             echo "#include <$hdr>"
1348         done
1349         echo "int main(void) { "
1350         i=1
1351         for class in $classes; do
1352             echo "$class obj$i;"
1353             i=$(expr $i + 1)
1354         done
1355         echo "return 0; }"
1356     } | test_ld "cxx" "$@" && enable $funcs && enable_sanitized $headers
1357 }
1358
1359 test_cpp_condition(){
1360     log test_cpp_condition "$@"
1361     header=$1
1362     condition=$2
1363     shift 2
1364     test_cpp "$@" <<EOF
1365 #include <$header>
1366 #if !($condition)
1367 #error "unsatisfied condition: $condition"
1368 #endif
1369 EOF
1370 }
1371
1372 check_cpp_condition(){
1373     log check_cpp_condition "$@"
1374     name=$1
1375     shift 1
1376     disable $name
1377     test_cpp_condition "$@" && enable $name
1378 }
1379
1380 test_cflags_cc(){
1381     log test_cflags_cc "$@"
1382     flags=$1
1383     header=$2
1384     condition=$3
1385     shift 3
1386     set -- $($cflags_filter "$flags")
1387     test_cc "$@" <<EOF
1388 #include <$header>
1389 #if !($condition)
1390 #error "unsatisfied condition: $condition"
1391 #endif
1392 EOF
1393 }
1394
1395 check_lib(){
1396     log check_lib "$@"
1397     name="$1"
1398     headers="$2"
1399     funcs="$3"
1400     shift 3
1401     disable $name
1402     check_func_headers "$headers" "$funcs" "$@" &&
1403         enable $name && eval ${name}_extralibs="\$@"
1404 }
1405
1406 check_lib_cpp(){
1407     log check_lib_cpp "$@"
1408     name="$1"
1409     headers="$2"
1410     classes="$3"
1411     shift 3
1412     disable $name
1413     check_class_headers_cpp "$headers" "$classes" "$@" &&
1414         enable $name && eval ${name}_extralibs="\$@"
1415 }
1416
1417 test_pkg_config(){
1418     log test_pkg_config "$@"
1419     name="$1"
1420     pkg_version="$2"
1421     pkg="${2%% *}"
1422     headers="$3"
1423     funcs="$4"
1424     shift 4
1425     disable $name
1426     test_cmd $pkg_config --exists --print-errors $pkg_version || return
1427     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1428     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1429     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1430         enable $name &&
1431         set_sanitized "${name}_cflags"    $pkg_cflags &&
1432         set_sanitized "${name}_extralibs" $pkg_libs
1433 }
1434
1435 check_pkg_config(){
1436     log check_pkg_config "$@"
1437     name="$1"
1438     test_pkg_config "$@" &&
1439         eval add_cflags \$${name}_cflags
1440 }
1441
1442 test_exec(){
1443     test_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1444 }
1445
1446 check_exec_crash(){
1447     log check_exec_crash "$@"
1448     code=$(cat)
1449
1450     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1451     # are safe but may not be available everywhere.  Thus we use
1452     # raise(SIGTERM) instead.  The check is run in a subshell so we
1453     # can redirect the "Terminated" message from the shell.  SIGBUS
1454     # is not defined by standard C so it is used conditionally.
1455
1456     (test_exec "$@") >> $logfile 2>&1 <<EOF
1457 #include <signal.h>
1458 static void sighandler(int sig){
1459     raise(SIGTERM);
1460 }
1461 int foo(void){
1462     $code
1463 }
1464 int (*func_ptr)(void) = foo;
1465 int main(void){
1466     signal(SIGILL, sighandler);
1467     signal(SIGFPE, sighandler);
1468     signal(SIGSEGV, sighandler);
1469 #ifdef SIGBUS
1470     signal(SIGBUS, sighandler);
1471 #endif
1472     return func_ptr();
1473 }
1474 EOF
1475 }
1476
1477 check_type(){
1478     log check_type "$@"
1479     headers=$1
1480     type=$2
1481     shift 2
1482     disable_sanitized "$type"
1483     test_code cc "$headers" "$type v" "$@" && enable_sanitized "$type"
1484 }
1485
1486 check_struct(){
1487     log check_struct "$@"
1488     headers=$1
1489     struct=$2
1490     member=$3
1491     shift 3
1492     disable_sanitized "${struct}_${member}"
1493     test_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1494         enable_sanitized "${struct}_${member}"
1495 }
1496
1497 check_builtin(){
1498     log check_builtin "$@"
1499     name=$1
1500     headers=$2
1501     builtin=$3
1502     shift 3
1503     disable "$name"
1504     test_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1505 }
1506
1507 check_compile_assert(){
1508     log check_compile_assert "$@"
1509     name=$1
1510     headers=$2
1511     condition=$3
1512     shift 3
1513     disable "$name"
1514     test_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1515 }
1516
1517 check_cc(){
1518     log check_cc "$@"
1519     name=$1
1520     shift
1521     disable "$name"
1522     test_code cc "$@" && enable "$name"
1523 }
1524
1525 require(){
1526     log require "$@"
1527     name_version="$1"
1528     name="${1%% *}"
1529     shift
1530     check_lib $name "$@" || die "ERROR: $name_version not found"
1531 }
1532
1533 require_cc(){
1534     log require_cc "$@"
1535     name="$1"
1536     check_cc "$@" || die "ERROR: $name failed"
1537 }
1538
1539 require_cpp(){
1540     name="$1"
1541     headers="$2"
1542     classes="$3"
1543     shift 3
1544     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1545 }
1546
1547 require_headers(){
1548     log require_headers "$@"
1549     headers="$1"
1550     check_headers "$@" || die "ERROR: $headers not found"
1551 }
1552
1553 require_cpp_condition(){
1554     log require_cpp_condition "$@"
1555     condition="$3"
1556     check_cpp_condition "$@" || die "ERROR: $condition not satisfied"
1557 }
1558
1559 require_pkg_config(){
1560     log require_pkg_config "$@"
1561     pkg_version="$2"
1562     check_pkg_config "$@" || die "ERROR: $pkg_version not found using pkg-config$pkg_config_fail_message"
1563 }
1564
1565 test_host_cc(){
1566     log test_host_cc "$@"
1567     cat > $TMPC
1568     log_file $TMPC
1569     test_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1570 }
1571
1572 test_host_cpp(){
1573     log test_host_cpp "$@"
1574     cat > $TMPC
1575     log_file $TMPC
1576     test_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1577 }
1578
1579 check_host_cppflags(){
1580     log check_host_cppflags "$@"
1581     test_host_cpp "$@" <<EOF && append host_cppflags "$@"
1582 #include <stdlib.h>
1583 EOF
1584 }
1585
1586 check_host_cflags(){
1587     log check_host_cflags "$@"
1588     set -- $($host_cflags_filter "$@")
1589     test_host_cc "$@" <<EOF && append host_cflags "$@"
1590 int x;
1591 EOF
1592 }
1593
1594 test_host_cpp_condition(){
1595     log test_host_cpp_condition "$@"
1596     header=$1
1597     condition=$2
1598     shift 2
1599     test_host_cpp "$@" <<EOF
1600 #include <$header>
1601 #if !($condition)
1602 #error "unsatisfied condition: $condition"
1603 #endif
1604 EOF
1605 }
1606
1607 check_host_cpp_condition(){
1608     log check_host_cpp_condition "$@"
1609     name=$1
1610     shift 1
1611     disable $name
1612     test_host_cpp_condition "$@" && enable $name
1613 }
1614
1615 cp_if_changed(){
1616     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1617     mkdir -p "$(dirname $2)"
1618     cp -f "$1" "$2"
1619 }
1620
1621 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1622 # system-dependent things.
1623
1624 AVCODEC_COMPONENTS="
1625     bsfs
1626     decoders
1627     encoders
1628     hwaccels
1629     parsers
1630 "
1631
1632 AVDEVICE_COMPONENTS="
1633     indevs
1634     outdevs
1635 "
1636
1637 AVFILTER_COMPONENTS="
1638     filters
1639 "
1640
1641 AVFORMAT_COMPONENTS="
1642     demuxers
1643     muxers
1644     protocols
1645 "
1646
1647 COMPONENT_LIST="
1648     $AVCODEC_COMPONENTS
1649     $AVDEVICE_COMPONENTS
1650     $AVFILTER_COMPONENTS
1651     $AVFORMAT_COMPONENTS
1652 "
1653
1654 EXAMPLE_LIST="
1655     avio_dir_cmd_example
1656     avio_reading_example
1657     decode_audio_example
1658     decode_video_example
1659     demuxing_decoding_example
1660     encode_audio_example
1661     encode_video_example
1662     extract_mvs_example
1663     filter_audio_example
1664     filtering_audio_example
1665     filtering_video_example
1666     http_multiclient_example
1667     hw_decode_example
1668     metadata_example
1669     muxing_example
1670     qsvdec_example
1671     remuxing_example
1672     resampling_audio_example
1673     scaling_video_example
1674     transcode_aac_example
1675     transcoding_example
1676     vaapi_encode_example
1677     vaapi_transcode_example
1678 "
1679
1680 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1681     alsa
1682     appkit
1683     avfoundation
1684     bzlib
1685     coreimage
1686     iconv
1687     libxcb
1688     libxcb_shm
1689     libxcb_shape
1690     libxcb_xfixes
1691     lzma
1692     schannel
1693     sdl2
1694     securetransport
1695     sndio
1696     xlib
1697     zlib
1698 "
1699
1700 EXTERNAL_LIBRARY_GPL_LIST="
1701     avisynth
1702     frei0r
1703     libcdio
1704     libdavs2
1705     librubberband
1706     libvidstab
1707     libx264
1708     libx265
1709     libxavs
1710     libxavs2
1711     libxvid
1712 "
1713
1714 EXTERNAL_LIBRARY_NONFREE_LIST="
1715     decklink
1716     libfdk_aac
1717     openssl
1718     libtls
1719 "
1720
1721 EXTERNAL_LIBRARY_VERSION3_LIST="
1722     gmp
1723     libaribb24
1724     liblensfun
1725     libopencore_amrnb
1726     libopencore_amrwb
1727     libvmaf
1728     libvo_amrwbenc
1729     mbedtls
1730     rkmpp
1731 "
1732
1733 EXTERNAL_LIBRARY_GPLV3_LIST="
1734     libsmbclient
1735 "
1736
1737 EXTERNAL_LIBRARY_LIST="
1738     $EXTERNAL_LIBRARY_GPL_LIST
1739     $EXTERNAL_LIBRARY_NONFREE_LIST
1740     $EXTERNAL_LIBRARY_VERSION3_LIST
1741     $EXTERNAL_LIBRARY_GPLV3_LIST
1742     chromaprint
1743     gcrypt
1744     gnutls
1745     jni
1746     ladspa
1747     libaom
1748     libass
1749     libbluray
1750     libbs2b
1751     libcaca
1752     libcelt
1753     libcodec2
1754     libdav1d
1755     libdc1394
1756     libdrm
1757     libflite
1758     libfontconfig
1759     libfreetype
1760     libfribidi
1761     libgme
1762     libgsm
1763     libiec61883
1764     libilbc
1765     libjack
1766     libklvanc
1767     libkvazaar
1768     libmodplug
1769     libmp3lame
1770     libmysofa
1771     libopencv
1772     libopenh264
1773     libopenjpeg
1774     libopenmpt
1775     libopus
1776     libpulse
1777     librsvg
1778     librtmp
1779     libshine
1780     libsmbclient
1781     libsnappy
1782     libsoxr
1783     libspeex
1784     libsrt
1785     libssh
1786     libtensorflow
1787     libtesseract
1788     libtheora
1789     libtwolame
1790     libv4l2
1791     libvorbis
1792     libvpx
1793     libwavpack
1794     libwebp
1795     libxml2
1796     libzimg
1797     libzmq
1798     libzvbi
1799     lv2
1800     mediacodec
1801     openal
1802     opengl
1803     pocketsphinx
1804     vapoursynth
1805 "
1806
1807 HWACCEL_AUTODETECT_LIBRARY_LIST="
1808     amf
1809     audiotoolbox
1810     crystalhd
1811     cuda
1812     cuvid
1813     d3d11va
1814     dxva2
1815     ffnvcodec
1816     nvdec
1817     nvenc
1818     vaapi
1819     vdpau
1820     videotoolbox
1821     v4l2_m2m
1822     xvmc
1823 "
1824
1825 # catchall list of things that require external libs to link
1826 EXTRALIBS_LIST="
1827     cpu_init
1828     cws2fws
1829 "
1830
1831 HWACCEL_LIBRARY_NONFREE_LIST="
1832     cuda_nvcc
1833     cuda_sdk
1834     libnpp
1835 "
1836
1837 HWACCEL_LIBRARY_LIST="
1838     $HWACCEL_LIBRARY_NONFREE_LIST
1839     libmfx
1840     mmal
1841     omx
1842     opencl
1843 "
1844
1845 DOCUMENT_LIST="
1846     doc
1847     htmlpages
1848     manpages
1849     podpages
1850     txtpages
1851 "
1852
1853 FEATURE_LIST="
1854     ftrapv
1855     gray
1856     hardcoded_tables
1857     omx_rpi
1858     runtime_cpudetect
1859     safe_bitstream_reader
1860     shared
1861     small
1862     static
1863     swscale_alpha
1864 "
1865
1866 # this list should be kept in linking order
1867 LIBRARY_LIST="
1868     avdevice
1869     avfilter
1870     swscale
1871     postproc
1872     avformat
1873     avcodec
1874     swresample
1875     avresample
1876     avutil
1877 "
1878
1879 LICENSE_LIST="
1880     gpl
1881     nonfree
1882     version3
1883 "
1884
1885 PROGRAM_LIST="
1886     ffplay
1887     ffprobe
1888     ffmpeg
1889 "
1890
1891 SUBSYSTEM_LIST="
1892     dct
1893     dwt
1894     error_resilience
1895     faan
1896     fast_unaligned
1897     fft
1898     lsp
1899     lzo
1900     mdct
1901     pixelutils
1902     network
1903     rdft
1904 "
1905
1906 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1907 CONFIG_LIST="
1908     $DOCUMENT_LIST
1909     $EXAMPLE_LIST
1910     $EXTERNAL_LIBRARY_LIST
1911     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1912     $HWACCEL_LIBRARY_LIST
1913     $HWACCEL_AUTODETECT_LIBRARY_LIST
1914     $FEATURE_LIST
1915     $LICENSE_LIST
1916     $LIBRARY_LIST
1917     $PROGRAM_LIST
1918     $SUBSYSTEM_LIST
1919     autodetect
1920     fontconfig
1921     linux_perf
1922     memory_poisoning
1923     neon_clobber_test
1924     ossfuzz
1925     pic
1926     thumb
1927     valgrind_backtrace
1928     xmm_clobber_test
1929     $COMPONENT_LIST
1930 "
1931
1932 THREADS_LIST="
1933     pthreads
1934     os2threads
1935     w32threads
1936 "
1937
1938 ATOMICS_LIST="
1939     atomics_gcc
1940     atomics_suncc
1941     atomics_win32
1942 "
1943
1944 AUTODETECT_LIBS="
1945     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1946     $HWACCEL_AUTODETECT_LIBRARY_LIST
1947     $THREADS_LIST
1948 "
1949
1950 ARCH_LIST="
1951     aarch64
1952     alpha
1953     arm
1954     avr32
1955     avr32_ap
1956     avr32_uc
1957     bfin
1958     ia64
1959     m68k
1960     mips
1961     mips64
1962     parisc
1963     ppc
1964     ppc64
1965     s390
1966     sh4
1967     sparc
1968     sparc64
1969     tilegx
1970     tilepro
1971     tomi
1972     x86
1973     x86_32
1974     x86_64
1975 "
1976
1977 ARCH_EXT_LIST_ARM="
1978     armv5te
1979     armv6
1980     armv6t2
1981     armv8
1982     neon
1983     vfp
1984     vfpv3
1985     setend
1986 "
1987
1988 ARCH_EXT_LIST_MIPS="
1989     mipsfpu
1990     mips32r2
1991     mips32r5
1992     mips64r2
1993     mips32r6
1994     mips64r6
1995     mipsdsp
1996     mipsdspr2
1997     msa
1998 "
1999
2000 ARCH_EXT_LIST_LOONGSON="
2001     loongson2
2002     loongson3
2003     mmi
2004 "
2005
2006 ARCH_EXT_LIST_X86_SIMD="
2007     aesni
2008     amd3dnow
2009     amd3dnowext
2010     avx
2011     avx2
2012     avx512
2013     fma3
2014     fma4
2015     mmx
2016     mmxext
2017     sse
2018     sse2
2019     sse3
2020     sse4
2021     sse42
2022     ssse3
2023     xop
2024 "
2025
2026 ARCH_EXT_LIST_PPC="
2027     altivec
2028     dcbzl
2029     ldbrx
2030     power8
2031     ppc4xx
2032     vsx
2033 "
2034
2035 ARCH_EXT_LIST_X86="
2036     $ARCH_EXT_LIST_X86_SIMD
2037     cpunop
2038     i686
2039 "
2040
2041 ARCH_EXT_LIST="
2042     $ARCH_EXT_LIST_ARM
2043     $ARCH_EXT_LIST_PPC
2044     $ARCH_EXT_LIST_X86
2045     $ARCH_EXT_LIST_MIPS
2046     $ARCH_EXT_LIST_LOONGSON
2047 "
2048
2049 ARCH_FEATURES="
2050     aligned_stack
2051     fast_64bit
2052     fast_clz
2053     fast_cmov
2054     local_aligned
2055     simd_align_16
2056     simd_align_32
2057     simd_align_64
2058 "
2059
2060 BUILTIN_LIST="
2061     atomic_cas_ptr
2062     machine_rw_barrier
2063     MemoryBarrier
2064     mm_empty
2065     rdtsc
2066     sem_timedwait
2067     sync_val_compare_and_swap
2068 "
2069 HAVE_LIST_CMDLINE="
2070     inline_asm
2071     symver
2072     x86asm
2073 "
2074
2075 HAVE_LIST_PUB="
2076     bigendian
2077     fast_unaligned
2078 "
2079
2080 HEADERS_LIST="
2081     arpa_inet_h
2082     asm_types_h
2083     cdio_paranoia_h
2084     cdio_paranoia_paranoia_h
2085     cuda_h
2086     dispatch_dispatch_h
2087     dev_bktr_ioctl_bt848_h
2088     dev_bktr_ioctl_meteor_h
2089     dev_ic_bt8xx_h
2090     dev_video_bktr_ioctl_bt848_h
2091     dev_video_meteor_ioctl_meteor_h
2092     direct_h
2093     dirent_h
2094     dxgidebug_h
2095     dxva_h
2096     ES2_gl_h
2097     gsm_h
2098     io_h
2099     linux_perf_event_h
2100     machine_ioctl_bt848_h
2101     machine_ioctl_meteor_h
2102     malloc_h
2103     opencv2_core_core_c_h
2104     OpenGL_gl3_h
2105     poll_h
2106     sys_param_h
2107     sys_resource_h
2108     sys_select_h
2109     sys_soundcard_h
2110     sys_time_h
2111     sys_un_h
2112     sys_videoio_h
2113     termios_h
2114     udplite_h
2115     unistd_h
2116     valgrind_valgrind_h
2117     windows_h
2118     winsock2_h
2119 "
2120
2121 INTRINSICS_LIST="
2122     intrinsics_neon
2123 "
2124
2125 COMPLEX_FUNCS="
2126     cabs
2127     cexp
2128 "
2129
2130 MATH_FUNCS="
2131     atanf
2132     atan2f
2133     cbrt
2134     cbrtf
2135     copysign
2136     cosf
2137     erf
2138     exp2
2139     exp2f
2140     expf
2141     hypot
2142     isfinite
2143     isinf
2144     isnan
2145     ldexpf
2146     llrint
2147     llrintf
2148     log2
2149     log2f
2150     log10f
2151     lrint
2152     lrintf
2153     powf
2154     rint
2155     round
2156     roundf
2157     sinf
2158     trunc
2159     truncf
2160 "
2161
2162 SYSTEM_FEATURES="
2163     dos_paths
2164     libc_msvcrt
2165     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2166     section_data_rel_ro
2167     threads
2168     uwp
2169     winrt
2170 "
2171
2172 SYSTEM_FUNCS="
2173     access
2174     aligned_malloc
2175     arc4random
2176     clock_gettime
2177     closesocket
2178     CommandLineToArgvW
2179     fcntl
2180     getaddrinfo
2181     gethrtime
2182     getopt
2183     GetProcessAffinityMask
2184     GetProcessMemoryInfo
2185     GetProcessTimes
2186     getrusage
2187     GetSystemTimeAsFileTime
2188     gettimeofday
2189     glob
2190     glXGetProcAddress
2191     gmtime_r
2192     inet_aton
2193     isatty
2194     kbhit
2195     localtime_r
2196     lstat
2197     lzo1x_999_compress
2198     mach_absolute_time
2199     MapViewOfFile
2200     memalign
2201     mkstemp
2202     mmap
2203     mprotect
2204     nanosleep
2205     PeekNamedPipe
2206     posix_memalign
2207     pthread_cancel
2208     sched_getaffinity
2209     SecItemImport
2210     SetConsoleTextAttribute
2211     SetConsoleCtrlHandler
2212     setmode
2213     setrlimit
2214     Sleep
2215     strerror_r
2216     sysconf
2217     sysctl
2218     usleep
2219     UTGetOSTypeFromString
2220     VirtualAlloc
2221     wglGetProcAddress
2222 "
2223
2224 SYSTEM_LIBRARIES="
2225     bcrypt
2226     vaapi_drm
2227     vaapi_x11
2228     vdpau_x11
2229 "
2230
2231 TOOLCHAIN_FEATURES="
2232     as_arch_directive
2233     as_dn_directive
2234     as_fpu_directive
2235     as_func
2236     as_object_arch
2237     asm_mod_q
2238     blocks_extension
2239     ebp_available
2240     ebx_available
2241     gnu_as
2242     gnu_windres
2243     ibm_asm
2244     inline_asm_direct_symbol_refs
2245     inline_asm_labels
2246     inline_asm_nonlocal_labels
2247     pragma_deprecated
2248     rsync_contimeout
2249     symver_asm_label
2250     symver_gnu_asm
2251     vfp_args
2252     xform_asm
2253     xmm_clobbers
2254 "
2255
2256 TYPES_LIST="
2257     kCMVideoCodecType_HEVC
2258     kCVPixelFormatType_420YpCbCr10BiPlanarVideoRange
2259     socklen_t
2260     struct_addrinfo
2261     struct_group_source_req
2262     struct_ip_mreq_source
2263     struct_ipv6_mreq
2264     struct_msghdr_msg_flags
2265     struct_pollfd
2266     struct_rusage_ru_maxrss
2267     struct_sctp_event_subscribe
2268     struct_sockaddr_in6
2269     struct_sockaddr_sa_len
2270     struct_sockaddr_storage
2271     struct_stat_st_mtim_tv_nsec
2272     struct_v4l2_frmivalenum_discrete
2273 "
2274
2275 HAVE_LIST="
2276     $ARCH_EXT_LIST
2277     $(add_suffix _external $ARCH_EXT_LIST)
2278     $(add_suffix _inline   $ARCH_EXT_LIST)
2279     $ARCH_FEATURES
2280     $BUILTIN_LIST
2281     $COMPLEX_FUNCS
2282     $HAVE_LIST_CMDLINE
2283     $HAVE_LIST_PUB
2284     $HEADERS_LIST
2285     $INTRINSICS_LIST
2286     $MATH_FUNCS
2287     $SYSTEM_FEATURES
2288     $SYSTEM_FUNCS
2289     $SYSTEM_LIBRARIES
2290     $THREADS_LIST
2291     $TOOLCHAIN_FEATURES
2292     $TYPES_LIST
2293     makeinfo
2294     makeinfo_html
2295     opencl_d3d11
2296     opencl_drm_arm
2297     opencl_drm_beignet
2298     opencl_dxva2
2299     opencl_vaapi_beignet
2300     opencl_vaapi_intel_media
2301     perl
2302     pod2man
2303     texi2html
2304 "
2305
2306 # options emitted with CONFIG_ prefix but not available on the command line
2307 CONFIG_EXTRA="
2308     aandcttables
2309     ac3dsp
2310     adts_header
2311     audio_frame_queue
2312     audiodsp
2313     blockdsp
2314     bswapdsp
2315     cabac
2316     cbs
2317     cbs_av1
2318     cbs_h264
2319     cbs_h265
2320     cbs_jpeg
2321     cbs_mpeg2
2322     cbs_vp9
2323     dirac_parse
2324     dnn
2325     dvprofile
2326     exif
2327     faandct
2328     faanidct
2329     fdctdsp
2330     flacdsp
2331     fmtconvert
2332     frame_thread_encoder
2333     g722dsp
2334     golomb
2335     gplv3
2336     h263dsp
2337     h264chroma
2338     h264dsp
2339     h264parse
2340     h264pred
2341     h264qpel
2342     hevcparse
2343     hpeldsp
2344     huffman
2345     huffyuvdsp
2346     huffyuvencdsp
2347     idctdsp
2348     iirfilter
2349     mdct15
2350     intrax8
2351     iso_media
2352     ividsp
2353     jpegtables
2354     lgplv3
2355     libx262
2356     llauddsp
2357     llviddsp
2358     llvidencdsp
2359     lpc
2360     lzf
2361     me_cmp
2362     mpeg_er
2363     mpegaudio
2364     mpegaudiodsp
2365     mpegaudioheader
2366     mpegvideo
2367     mpegvideoenc
2368     mss34dsp
2369     pixblockdsp
2370     qpeldsp
2371     qsv
2372     qsvdec
2373     qsvenc
2374     qsvvpp
2375     rangecoder
2376     riffdec
2377     riffenc
2378     rtpdec
2379     rtpenc_chain
2380     rv34dsp
2381     scene_sad
2382     sinewin
2383     snappy
2384     srtp
2385     startcode
2386     texturedsp
2387     texturedspenc
2388     tpeldsp
2389     vaapi_1
2390     vaapi_encode
2391     vc1dsp
2392     videodsp
2393     vp3dsp
2394     vp56dsp
2395     vp8dsp
2396     wma_freqs
2397     wmv2dsp
2398 "
2399
2400 CMDLINE_SELECT="
2401     $ARCH_EXT_LIST
2402     $CONFIG_LIST
2403     $HAVE_LIST_CMDLINE
2404     $THREADS_LIST
2405     asm
2406     cross_compile
2407     debug
2408     extra_warnings
2409     logging
2410     lto
2411     optimizations
2412     rpath
2413     stripping
2414 "
2415
2416 PATHS_LIST="
2417     bindir
2418     datadir
2419     docdir
2420     incdir
2421     libdir
2422     mandir
2423     pkgconfigdir
2424     prefix
2425     shlibdir
2426     install_name_dir
2427 "
2428
2429 CMDLINE_SET="
2430     $PATHS_LIST
2431     ar
2432     arch
2433     as
2434     assert_level
2435     build_suffix
2436     cc
2437     objcc
2438     cpu
2439     cross_prefix
2440     custom_allocator
2441     cxx
2442     dep_cc
2443     doxygen
2444     env
2445     extra_version
2446     gas
2447     host_cc
2448     host_cflags
2449     host_extralibs
2450     host_ld
2451     host_ldflags
2452     host_os
2453     ignore_tests
2454     install
2455     ld
2456     ln_s
2457     logfile
2458     malloc_prefix
2459     nm
2460     optflags
2461     nvcc
2462     nvccflags
2463     pkg_config
2464     pkg_config_flags
2465     progs_suffix
2466     random_seed
2467     ranlib
2468     samples
2469     strip
2470     sws_max_filter_size
2471     sysinclude
2472     sysroot
2473     target_exec
2474     target_os
2475     target_path
2476     target_samples
2477     tempprefix
2478     toolchain
2479     valgrind
2480     windres
2481     x86asmexe
2482 "
2483
2484 CMDLINE_APPEND="
2485     extra_cflags
2486     extra_cxxflags
2487     extra_objcflags
2488     host_cppflags
2489 "
2490
2491 # code dependency declarations
2492
2493 # architecture extensions
2494
2495 armv5te_deps="arm"
2496 armv6_deps="arm"
2497 armv6t2_deps="arm"
2498 armv8_deps="aarch64"
2499 neon_deps_any="aarch64 arm"
2500 intrinsics_neon_deps="neon"
2501 vfp_deps_any="aarch64 arm"
2502 vfpv3_deps="vfp"
2503 setend_deps="arm"
2504
2505 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2506
2507 altivec_deps="ppc"
2508 dcbzl_deps="ppc"
2509 ldbrx_deps="ppc"
2510 ppc4xx_deps="ppc"
2511 vsx_deps="altivec"
2512 power8_deps="vsx"
2513
2514 loongson2_deps="mips"
2515 loongson3_deps="mips"
2516 mips32r2_deps="mips"
2517 mips32r5_deps="mips"
2518 mips32r6_deps="mips"
2519 mips64r2_deps="mips"
2520 mips64r6_deps="mips"
2521 mipsfpu_deps="mips"
2522 mipsdsp_deps="mips"
2523 mipsdspr2_deps="mips"
2524 mmi_deps="mips"
2525 msa_deps="mipsfpu"
2526
2527 cpunop_deps="i686"
2528 x86_64_select="i686"
2529 x86_64_suggest="fast_cmov"
2530
2531 amd3dnow_deps="mmx"
2532 amd3dnowext_deps="amd3dnow"
2533 i686_deps="x86"
2534 mmx_deps="x86"
2535 mmxext_deps="mmx"
2536 sse_deps="mmxext"
2537 sse2_deps="sse"
2538 sse3_deps="sse2"
2539 ssse3_deps="sse3"
2540 sse4_deps="ssse3"
2541 sse42_deps="sse4"
2542 aesni_deps="sse42"
2543 avx_deps="sse42"
2544 xop_deps="avx"
2545 fma3_deps="avx"
2546 fma4_deps="avx"
2547 avx2_deps="avx"
2548 avx512_deps="avx2"
2549
2550 mmx_external_deps="x86asm"
2551 mmx_inline_deps="inline_asm x86"
2552 mmx_suggest="mmx_external mmx_inline"
2553
2554 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2555     eval dep=\$${ext}_deps
2556     eval ${ext}_external_deps='"${dep}_external"'
2557     eval ${ext}_inline_deps='"${dep}_inline"'
2558     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2559 done
2560
2561 aligned_stack_if_any="aarch64 ppc x86"
2562 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2563 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2564 fast_unaligned_if_any="aarch64 ppc x86"
2565 simd_align_16_if_any="altivec neon sse"
2566 simd_align_32_if_any="avx"
2567 simd_align_64_if_any="avx512"
2568
2569 # system capabilities
2570 linux_perf_deps="linux_perf_event_h"
2571 symver_if_any="symver_asm_label symver_gnu_asm"
2572 valgrind_backtrace_conflict="optimizations"
2573 valgrind_backtrace_deps="valgrind_valgrind_h"
2574
2575 # threading support
2576 atomics_gcc_if="sync_val_compare_and_swap"
2577 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2578 atomics_win32_if="MemoryBarrier"
2579 atomics_native_if_any="$ATOMICS_LIST"
2580 w32threads_deps="atomics_native"
2581 threads_if_any="$THREADS_LIST"
2582
2583 # subsystems
2584 cbs_av1_select="cbs"
2585 cbs_h264_select="cbs golomb"
2586 cbs_h265_select="cbs golomb"
2587 cbs_jpeg_select="cbs"
2588 cbs_mpeg2_select="cbs"
2589 cbs_vp9_select="cbs"
2590 dct_select="rdft"
2591 dirac_parse_select="golomb"
2592 dnn_suggest="libtensorflow"
2593 error_resilience_select="me_cmp"
2594 faandct_deps="faan"
2595 faandct_select="fdctdsp"
2596 faanidct_deps="faan"
2597 faanidct_select="idctdsp"
2598 h264dsp_select="startcode"
2599 hevcparse_select="golomb"
2600 frame_thread_encoder_deps="encoders threads"
2601 intrax8_select="blockdsp idctdsp"
2602 mdct_select="fft"
2603 mdct15_select="fft"
2604 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2605 mpeg_er_select="error_resilience"
2606 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2607 mpegaudiodsp_select="dct"
2608 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2609 mpegvideoenc_select="aandcttables me_cmp mpegvideo pixblockdsp qpeldsp"
2610 vc1dsp_select="h264chroma qpeldsp startcode"
2611 rdft_select="fft"
2612
2613 # decoders / encoders
2614 aac_decoder_select="adts_header mdct15 mdct sinewin"
2615 aac_fixed_decoder_select="adts_header mdct sinewin"
2616 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2617 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2618 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2619 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2620 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2621 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2622 adpcm_g722_decoder_select="g722dsp"
2623 adpcm_g722_encoder_select="g722dsp"
2624 aic_decoder_select="golomb idctdsp"
2625 alac_encoder_select="lpc"
2626 als_decoder_select="bswapdsp"
2627 amrnb_decoder_select="lsp"
2628 amrwb_decoder_select="lsp"
2629 amv_decoder_select="sp5x_decoder exif"
2630 amv_encoder_select="jpegtables mpegvideoenc"
2631 ape_decoder_select="bswapdsp llauddsp"
2632 apng_decoder_deps="zlib"
2633 apng_encoder_deps="zlib"
2634 apng_encoder_select="llvidencdsp"
2635 aptx_decoder_select="audio_frame_queue"
2636 aptx_encoder_select="audio_frame_queue"
2637 aptx_hd_decoder_select="audio_frame_queue"
2638 aptx_hd_encoder_select="audio_frame_queue"
2639 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2640 asv1_encoder_select="aandcttables bswapdsp fdctdsp pixblockdsp"
2641 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2642 asv2_encoder_select="aandcttables bswapdsp fdctdsp pixblockdsp"
2643 atrac1_decoder_select="mdct sinewin"
2644 atrac3_decoder_select="mdct"
2645 atrac3p_decoder_select="mdct sinewin"
2646 atrac9_decoder_select="mdct"
2647 avrn_decoder_select="exif jpegtables"
2648 bink_decoder_select="blockdsp hpeldsp"
2649 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2650 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2651 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2652 clearvideo_decoder_select="idctdsp"
2653 cllc_decoder_select="bswapdsp"
2654 comfortnoise_encoder_select="lpc"
2655 cook_decoder_select="audiodsp mdct sinewin"
2656 cscd_decoder_select="lzo"
2657 cscd_decoder_suggest="zlib"
2658 dca_decoder_select="mdct"
2659 dds_decoder_select="texturedsp"
2660 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2661 dnxhd_decoder_select="blockdsp idctdsp"
2662 dnxhd_encoder_select="blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2663 dolby_e_decoder_select="mdct"
2664 dvvideo_decoder_select="dvprofile idctdsp"
2665 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2666 dxa_decoder_deps="zlib"
2667 dxv_decoder_select="lzf texturedsp"
2668 eac3_decoder_select="ac3_decoder"
2669 eac3_encoder_select="ac3_encoder"
2670 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2671 eatgq_decoder_select="aandcttables"
2672 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2673 exr_decoder_deps="zlib"
2674 ffv1_decoder_select="rangecoder"
2675 ffv1_encoder_select="rangecoder"
2676 ffvhuff_decoder_select="huffyuv_decoder"
2677 ffvhuff_encoder_select="huffyuv_encoder"
2678 fic_decoder_select="golomb"
2679 flac_decoder_select="flacdsp"
2680 flac_encoder_select="bswapdsp flacdsp lpc"
2681 flashsv2_decoder_deps="zlib"
2682 flashsv2_encoder_deps="zlib"
2683 flashsv_decoder_deps="zlib"
2684 flashsv_encoder_deps="zlib"
2685 flv_decoder_select="h263_decoder"
2686 flv_encoder_select="h263_encoder"
2687 fourxm_decoder_select="blockdsp bswapdsp"
2688 fraps_decoder_select="bswapdsp huffman"
2689 g2m_decoder_deps="zlib"
2690 g2m_decoder_select="blockdsp idctdsp jpegtables"
2691 g729_decoder_select="audiodsp"
2692 h261_decoder_select="mpegvideo"
2693 h261_encoder_select="mpegvideoenc"
2694 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2695 h263_encoder_select="h263dsp mpegvideoenc"
2696 h263i_decoder_select="h263_decoder"
2697 h263p_decoder_select="h263_decoder"
2698 h263p_encoder_select="h263_encoder"
2699 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2700 h264_decoder_suggest="error_resilience"
2701 hap_decoder_select="snappy texturedsp"
2702 hap_encoder_deps="libsnappy"
2703 hap_encoder_select="texturedspenc"
2704 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2705 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2706 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2707 hymt_decoder_select="huffyuv_decoder"
2708 iac_decoder_select="imc_decoder"
2709 imc_decoder_select="bswapdsp fft mdct sinewin"
2710 indeo3_decoder_select="hpeldsp"
2711 indeo4_decoder_select="ividsp"
2712 indeo5_decoder_select="ividsp"
2713 interplay_video_decoder_select="hpeldsp"
2714 jpegls_decoder_select="mjpeg_decoder"
2715 jv_decoder_select="blockdsp"
2716 lagarith_decoder_select="llviddsp"
2717 ljpeg_encoder_select="idctdsp jpegtables mpegvideoenc"
2718 lscr_decoder_deps="zlib"
2719 magicyuv_decoder_select="llviddsp"
2720 magicyuv_encoder_select="llvidencdsp"
2721 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2722 metasound_decoder_select="lsp mdct sinewin"
2723 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2724 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2725 mjpeg_encoder_select="jpegtables mpegvideoenc"
2726 mjpegb_decoder_select="mjpeg_decoder"
2727 mlp_decoder_select="mlp_parser"
2728 mlp_encoder_select="lpc audio_frame_queue"
2729 motionpixels_decoder_select="bswapdsp"
2730 mp1_decoder_select="mpegaudio"
2731 mp1float_decoder_select="mpegaudio"
2732 mp2_decoder_select="mpegaudio"
2733 mp2float_decoder_select="mpegaudio"
2734 mp3_decoder_select="mpegaudio"
2735 mp3adu_decoder_select="mpegaudio"
2736 mp3adufloat_decoder_select="mpegaudio"
2737 mp3float_decoder_select="mpegaudio"
2738 mp3on4_decoder_select="mpegaudio"
2739 mp3on4float_decoder_select="mpegaudio"
2740 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2741 mpc8_decoder_select="mpegaudiodsp"
2742 mpegvideo_decoder_select="mpegvideo"
2743 mpeg1video_decoder_select="mpegvideo"
2744 mpeg1video_encoder_select="mpegvideoenc h263dsp"
2745 mpeg2video_decoder_select="mpegvideo"
2746 mpeg2video_encoder_select="mpegvideoenc h263dsp"
2747 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2748 mpeg4_encoder_select="h263_encoder"
2749 msa1_decoder_select="mss34dsp"
2750 mscc_decoder_deps="zlib"
2751 msmpeg4v1_decoder_select="h263_decoder"
2752 msmpeg4v2_decoder_select="h263_decoder"
2753 msmpeg4v2_encoder_select="h263_encoder"
2754 msmpeg4v3_decoder_select="h263_decoder"
2755 msmpeg4v3_encoder_select="h263_encoder"
2756 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2757 mts2_decoder_select="mss34dsp"
2758 mwsc_decoder_deps="zlib"
2759 mxpeg_decoder_select="mjpeg_decoder"
2760 nellymoser_decoder_select="mdct sinewin"
2761 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2762 nuv_decoder_select="idctdsp lzo"
2763 on2avc_decoder_select="mdct"
2764 opus_decoder_deps="swresample"
2765 opus_decoder_select="mdct15"
2766 opus_encoder_select="audio_frame_queue mdct15"
2767 png_decoder_deps="zlib"
2768 png_encoder_deps="zlib"
2769 png_encoder_select="llvidencdsp"
2770 prores_decoder_select="blockdsp idctdsp"
2771 prores_encoder_select="fdctdsp"
2772 qcelp_decoder_select="lsp"
2773 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2774 ra_144_decoder_select="audiodsp"
2775 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2776 ralf_decoder_select="golomb"
2777 rasc_decoder_deps="zlib"
2778 rawvideo_decoder_select="bswapdsp"
2779 rscc_decoder_deps="zlib"
2780 rtjpeg_decoder_select="me_cmp"
2781 rv10_decoder_select="h263_decoder"
2782 rv10_encoder_select="h263_encoder"
2783 rv20_decoder_select="h263_decoder"
2784 rv20_encoder_select="h263_encoder"
2785 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2786 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2787 screenpresso_decoder_deps="zlib"
2788 shorten_decoder_select="bswapdsp"
2789 sipr_decoder_select="lsp"
2790 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2791 snow_encoder_select="dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2792 sonic_decoder_select="golomb rangecoder"
2793 sonic_encoder_select="golomb rangecoder"
2794 sonic_ls_encoder_select="golomb rangecoder"
2795 sp5x_decoder_select="mjpeg_decoder"
2796 speedhq_decoder_select="mpegvideo"
2797 srgc_decoder_deps="zlib"
2798 svq1_decoder_select="hpeldsp"
2799 svq1_encoder_select="hpeldsp me_cmp mpegvideoenc"
2800 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2801 svq3_decoder_suggest="zlib"
2802 tak_decoder_select="audiodsp"
2803 tdsc_decoder_deps="zlib"
2804 tdsc_decoder_select="mjpeg_decoder"
2805 theora_decoder_select="vp3_decoder"
2806 thp_decoder_select="mjpeg_decoder"
2807 tiff_decoder_suggest="zlib lzma"
2808 tiff_encoder_suggest="zlib"
2809 truehd_decoder_select="mlp_parser"
2810 truehd_encoder_select="lpc audio_frame_queue"
2811 truemotion2_decoder_select="bswapdsp"
2812 truespeech_decoder_select="bswapdsp"
2813 tscc_decoder_deps="zlib"
2814 twinvq_decoder_select="mdct lsp sinewin"
2815 txd_decoder_select="texturedsp"
2816 utvideo_decoder_select="bswapdsp llviddsp"
2817 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2818 vble_decoder_select="llviddsp"
2819 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2820 vc1image_decoder_select="vc1_decoder"
2821 vorbis_decoder_select="mdct"
2822 vorbis_encoder_select="audio_frame_queue mdct"
2823 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2824 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2825 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2826 vp6a_decoder_select="vp6_decoder"
2827 vp6f_decoder_select="vp6_decoder"
2828 vp7_decoder_select="h264pred videodsp vp8dsp"
2829 vp8_decoder_select="h264pred videodsp vp8dsp"
2830 vp9_decoder_select="videodsp vp9_parser vp9_superframe_split_bsf"
2831 wcmv_decoder_deps="zlib"
2832 webp_decoder_select="vp8_decoder exif"
2833 wmalossless_decoder_select="llauddsp"
2834 wmapro_decoder_select="mdct sinewin wma_freqs"
2835 wmav1_decoder_select="mdct sinewin wma_freqs"
2836 wmav1_encoder_select="mdct sinewin wma_freqs"
2837 wmav2_decoder_select="mdct sinewin wma_freqs"
2838 wmav2_encoder_select="mdct sinewin wma_freqs"
2839 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2840 wmv1_decoder_select="h263_decoder"
2841 wmv1_encoder_select="h263_encoder"
2842 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2843 wmv2_encoder_select="h263_encoder wmv2dsp"
2844 wmv3_decoder_select="vc1_decoder"
2845 wmv3image_decoder_select="wmv3_decoder"
2846 xma1_decoder_select="wmapro_decoder"
2847 xma2_decoder_select="wmapro_decoder"
2848 zerocodec_decoder_deps="zlib"
2849 zlib_decoder_deps="zlib"
2850 zlib_encoder_deps="zlib"
2851 zmbv_decoder_deps="zlib"
2852 zmbv_encoder_deps="zlib"
2853
2854 # hardware accelerators
2855 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2856 cuda_deps="ffnvcodec"
2857 cuvid_deps="ffnvcodec"
2858 d3d11va_deps="dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2859 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32 user32"
2860 ffnvcodec_deps_any="libdl LoadLibrary"
2861 nvdec_deps="ffnvcodec"
2862 vaapi_x11_deps="xlib"
2863 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2864 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2865 xvmc_deps="X11_extensions_XvMClib_h"
2866
2867 h263_vaapi_hwaccel_deps="vaapi"
2868 h263_vaapi_hwaccel_select="h263_decoder"
2869 h263_videotoolbox_hwaccel_deps="videotoolbox"
2870 h263_videotoolbox_hwaccel_select="h263_decoder"
2871 h264_d3d11va_hwaccel_deps="d3d11va"
2872 h264_d3d11va_hwaccel_select="h264_decoder"
2873 h264_d3d11va2_hwaccel_deps="d3d11va"
2874 h264_d3d11va2_hwaccel_select="h264_decoder"
2875 h264_dxva2_hwaccel_deps="dxva2"
2876 h264_dxva2_hwaccel_select="h264_decoder"
2877 h264_nvdec_hwaccel_deps="nvdec"
2878 h264_nvdec_hwaccel_select="h264_decoder"
2879 h264_vaapi_hwaccel_deps="vaapi"
2880 h264_vaapi_hwaccel_select="h264_decoder"
2881 h264_vdpau_hwaccel_deps="vdpau"
2882 h264_vdpau_hwaccel_select="h264_decoder"
2883 h264_videotoolbox_hwaccel_deps="videotoolbox"
2884 h264_videotoolbox_hwaccel_select="h264_decoder"
2885 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2886 hevc_d3d11va_hwaccel_select="hevc_decoder"
2887 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2888 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2889 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2890 hevc_dxva2_hwaccel_select="hevc_decoder"
2891 hevc_nvdec_hwaccel_deps="nvdec"
2892 hevc_nvdec_hwaccel_select="hevc_decoder"
2893 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2894 hevc_vaapi_hwaccel_select="hevc_decoder"
2895 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2896 hevc_vdpau_hwaccel_select="hevc_decoder"
2897 hevc_videotoolbox_hwaccel_deps="videotoolbox"
2898 hevc_videotoolbox_hwaccel_select="hevc_decoder"
2899 mjpeg_nvdec_hwaccel_deps="nvdec"
2900 mjpeg_nvdec_hwaccel_select="mjpeg_decoder"
2901 mjpeg_vaapi_hwaccel_deps="vaapi"
2902 mjpeg_vaapi_hwaccel_select="mjpeg_decoder"
2903 mpeg_xvmc_hwaccel_deps="xvmc"
2904 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2905 mpeg1_nvdec_hwaccel_deps="nvdec"
2906 mpeg1_nvdec_hwaccel_select="mpeg1video_decoder"
2907 mpeg1_vdpau_hwaccel_deps="vdpau"
2908 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2909 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2910 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2911 mpeg1_xvmc_hwaccel_deps="xvmc"
2912 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2913 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2914 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2915 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2916 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2917 mpeg2_dxva2_hwaccel_deps="dxva2"
2918 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2919 mpeg2_nvdec_hwaccel_deps="nvdec"
2920 mpeg2_nvdec_hwaccel_select="mpeg2video_decoder"
2921 mpeg2_vaapi_hwaccel_deps="vaapi"
2922 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2923 mpeg2_vdpau_hwaccel_deps="vdpau"
2924 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2925 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2926 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2927 mpeg2_xvmc_hwaccel_deps="xvmc"
2928 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2929 mpeg4_nvdec_hwaccel_deps="nvdec"
2930 mpeg4_nvdec_hwaccel_select="mpeg4_decoder"
2931 mpeg4_vaapi_hwaccel_deps="vaapi"
2932 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2933 mpeg4_vdpau_hwaccel_deps="vdpau"
2934 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2935 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2936 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2937 vc1_d3d11va_hwaccel_deps="d3d11va"
2938 vc1_d3d11va_hwaccel_select="vc1_decoder"
2939 vc1_d3d11va2_hwaccel_deps="d3d11va"
2940 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2941 vc1_dxva2_hwaccel_deps="dxva2"
2942 vc1_dxva2_hwaccel_select="vc1_decoder"
2943 vc1_nvdec_hwaccel_deps="nvdec"
2944 vc1_nvdec_hwaccel_select="vc1_decoder"
2945 vc1_vaapi_hwaccel_deps="vaapi"
2946 vc1_vaapi_hwaccel_select="vc1_decoder"
2947 vc1_vdpau_hwaccel_deps="vdpau"
2948 vc1_vdpau_hwaccel_select="vc1_decoder"
2949 vp8_nvdec_hwaccel_deps="nvdec"
2950 vp8_nvdec_hwaccel_select="vp8_decoder"
2951 vp8_vaapi_hwaccel_deps="vaapi"
2952 vp8_vaapi_hwaccel_select="vp8_decoder"
2953 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2954 vp9_d3d11va_hwaccel_select="vp9_decoder"
2955 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2956 vp9_d3d11va2_hwaccel_select="vp9_decoder"
2957 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2958 vp9_dxva2_hwaccel_select="vp9_decoder"
2959 vp9_nvdec_hwaccel_deps="nvdec"
2960 vp9_nvdec_hwaccel_select="vp9_decoder"
2961 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2962 vp9_vaapi_hwaccel_select="vp9_decoder"
2963 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2964 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2965 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2966 wmv3_nvdec_hwaccel_select="vc1_nvdec_hwaccel"
2967 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2968 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2969
2970 # hardware-accelerated codecs
2971 omx_deps="libdl pthreads"
2972 omx_rpi_select="omx"
2973 qsv_deps="libmfx"
2974 qsvdec_select="qsv"
2975 qsvenc_select="qsv"
2976 qsvvpp_select="qsv"
2977 vaapi_encode_deps="vaapi"
2978 v4l2_m2m_deps="linux_videodev2_h sem_timedwait"
2979
2980 hwupload_cuda_filter_deps="ffnvcodec"
2981 scale_npp_filter_deps="ffnvcodec libnpp"
2982 scale_cuda_filter_deps="ffnvcodec cuda_nvcc"
2983 thumbnail_cuda_filter_deps="ffnvcodec cuda_nvcc"
2984 transpose_npp_filter_deps="ffnvcodec libnpp"
2985
2986 amf_deps_any="libdl LoadLibrary"
2987 nvenc_deps="ffnvcodec"
2988 nvenc_deps_any="libdl LoadLibrary"
2989 nvenc_encoder_deps="nvenc"
2990
2991 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
2992 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
2993 h264_amf_encoder_deps="amf"
2994 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2995 h264_cuvid_decoder_deps="cuvid"
2996 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2997 h264_mediacodec_decoder_deps="mediacodec"
2998 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2999 h264_mmal_decoder_deps="mmal"
3000 h264_nvenc_encoder_deps="nvenc"
3001 h264_omx_encoder_deps="omx"
3002 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec"
3003 h264_qsv_encoder_select="qsvenc"
3004 h264_rkmpp_decoder_deps="rkmpp"
3005 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
3006 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
3007 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
3008 h264_v4l2m2m_decoder_select="h264_mp4toannexb_bsf"
3009 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
3010 hevc_amf_encoder_deps="amf"
3011 hevc_cuvid_decoder_deps="cuvid"
3012 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
3013 hevc_mediacodec_decoder_deps="mediacodec"
3014 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
3015 hevc_nvenc_encoder_deps="nvenc"
3016 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec"
3017 hevc_qsv_encoder_select="hevcparse qsvenc"
3018 hevc_rkmpp_decoder_deps="rkmpp"
3019 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
3020 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
3021 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
3022 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
3023 hevc_v4l2m2m_decoder_select="hevc_mp4toannexb_bsf"
3024 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
3025 mjpeg_cuvid_decoder_deps="cuvid"
3026 mjpeg_qsv_encoder_deps="libmfx"
3027 mjpeg_qsv_encoder_select="qsvenc"
3028 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
3029 mjpeg_vaapi_encoder_select="cbs_jpeg jpegtables vaapi_encode"
3030 mpeg1_cuvid_decoder_deps="cuvid"
3031 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
3032 mpeg2_crystalhd_decoder_select="crystalhd"
3033 mpeg2_cuvid_decoder_deps="cuvid"
3034 mpeg2_mmal_decoder_deps="mmal"
3035 mpeg2_mediacodec_decoder_deps="mediacodec"
3036 mpeg2_qsv_decoder_select="qsvdec mpegvideo_parser"
3037 mpeg2_qsv_encoder_select="qsvenc"
3038 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
3039 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
3040 mpeg4_crystalhd_decoder_select="crystalhd"
3041 mpeg4_cuvid_decoder_deps="cuvid"
3042 mpeg4_mediacodec_decoder_deps="mediacodec"
3043 mpeg4_mmal_decoder_deps="mmal"
3044 mpeg4_omx_encoder_deps="omx"
3045 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
3046 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
3047 msmpeg4_crystalhd_decoder_select="crystalhd"
3048 nvenc_h264_encoder_select="h264_nvenc_encoder"
3049 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
3050 vc1_crystalhd_decoder_select="crystalhd"
3051 vc1_cuvid_decoder_deps="cuvid"
3052 vc1_mmal_decoder_deps="mmal"
3053 vc1_qsv_decoder_select="qsvdec vc1_parser"
3054 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
3055 vp8_cuvid_decoder_deps="cuvid"
3056 vp8_mediacodec_decoder_deps="mediacodec"
3057 vp8_qsv_decoder_select="qsvdec vp8_parser"
3058 vp8_rkmpp_decoder_deps="rkmpp"
3059 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
3060 vp8_vaapi_encoder_select="vaapi_encode"
3061 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
3062 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
3063 vp9_cuvid_decoder_deps="cuvid"
3064 vp9_mediacodec_decoder_deps="mediacodec"
3065 vp9_rkmpp_decoder_deps="rkmpp"
3066 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
3067 vp9_vaapi_encoder_select="vaapi_encode"
3068 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
3069 wmv3_crystalhd_decoder_select="crystalhd"
3070
3071 # parsers
3072 aac_parser_select="adts_header"
3073 av1_parser_select="cbs_av1"
3074 h264_parser_select="golomb h264dsp h264parse"
3075 hevc_parser_select="hevcparse"
3076 mpegaudio_parser_select="mpegaudioheader"
3077 mpegvideo_parser_select="mpegvideo"
3078 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
3079 vc1_parser_select="vc1dsp"
3080
3081 # bitstream_filters
3082 aac_adtstoasc_bsf_select="adts_header"
3083 av1_frame_split_bsf_select="cbs_av1"
3084 av1_metadata_bsf_select="cbs_av1"
3085 eac3_core_bsf_select="ac3_parser"
3086 filter_units_bsf_select="cbs"
3087 h264_metadata_bsf_deps="const_nan"
3088 h264_metadata_bsf_select="cbs_h264"
3089 h264_redundant_pps_bsf_select="cbs_h264"
3090 hevc_metadata_bsf_select="cbs_h265"
3091 mjpeg2jpeg_bsf_select="jpegtables"
3092 mpeg2_metadata_bsf_select="cbs_mpeg2"
3093 trace_headers_bsf_select="cbs"
3094 vp9_metadata_bsf_select="cbs_vp9"
3095
3096 # external libraries
3097 aac_at_decoder_deps="audiotoolbox"
3098 aac_at_decoder_select="aac_adtstoasc_bsf"
3099 ac3_at_decoder_deps="audiotoolbox"
3100 ac3_at_decoder_select="ac3_parser"
3101 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
3102 alac_at_decoder_deps="audiotoolbox"
3103 amr_nb_at_decoder_deps="audiotoolbox"
3104 avisynth_deps_any="libdl LoadLibrary"
3105 avisynth_demuxer_deps="avisynth"
3106 avisynth_demuxer_select="riffdec"
3107 eac3_at_decoder_deps="audiotoolbox"
3108 eac3_at_decoder_select="ac3_parser"
3109 gsm_ms_at_decoder_deps="audiotoolbox"
3110 ilbc_at_decoder_deps="audiotoolbox"
3111 mp1_at_decoder_deps="audiotoolbox"
3112 mp2_at_decoder_deps="audiotoolbox"
3113 mp3_at_decoder_deps="audiotoolbox"
3114 mp1_at_decoder_select="mpegaudioheader"
3115 mp2_at_decoder_select="mpegaudioheader"
3116 mp3_at_decoder_select="mpegaudioheader"
3117 pcm_alaw_at_decoder_deps="audiotoolbox"
3118 pcm_mulaw_at_decoder_deps="audiotoolbox"
3119 qdmc_at_decoder_deps="audiotoolbox"
3120 qdm2_at_decoder_deps="audiotoolbox"
3121 aac_at_encoder_deps="audiotoolbox"
3122 aac_at_encoder_select="audio_frame_queue"
3123 alac_at_encoder_deps="audiotoolbox"
3124 alac_at_encoder_select="audio_frame_queue"
3125 ilbc_at_encoder_deps="audiotoolbox"
3126 ilbc_at_encoder_select="audio_frame_queue"
3127 pcm_alaw_at_encoder_deps="audiotoolbox"
3128 pcm_alaw_at_encoder_select="audio_frame_queue"
3129 pcm_mulaw_at_encoder_deps="audiotoolbox"
3130 pcm_mulaw_at_encoder_select="audio_frame_queue"
3131 chromaprint_muxer_deps="chromaprint"
3132 h264_videotoolbox_encoder_deps="pthreads"
3133 h264_videotoolbox_encoder_select="videotoolbox_encoder"
3134 hevc_videotoolbox_encoder_deps="pthreads"
3135 hevc_videotoolbox_encoder_select="videotoolbox_encoder"
3136 libaom_av1_decoder_deps="libaom"
3137 libaom_av1_encoder_deps="libaom"
3138 libaom_av1_encoder_select="extract_extradata_bsf"
3139 libaribb24_decoder_deps="libaribb24"
3140 libcelt_decoder_deps="libcelt"
3141 libcodec2_decoder_deps="libcodec2"
3142 libcodec2_encoder_deps="libcodec2"
3143 libdav1d_decoder_deps="libdav1d"
3144 libdavs2_decoder_deps="libdavs2"
3145 libfdk_aac_decoder_deps="libfdk_aac"
3146 libfdk_aac_encoder_deps="libfdk_aac"
3147 libfdk_aac_encoder_select="audio_frame_queue"
3148 libgme_demuxer_deps="libgme"
3149 libgsm_decoder_deps="libgsm"
3150 libgsm_encoder_deps="libgsm"
3151 libgsm_ms_decoder_deps="libgsm"
3152 libgsm_ms_encoder_deps="libgsm"
3153 libilbc_decoder_deps="libilbc"
3154 libilbc_encoder_deps="libilbc"
3155 libkvazaar_encoder_deps="libkvazaar"
3156 libmodplug_demuxer_deps="libmodplug"
3157 libmp3lame_encoder_deps="libmp3lame"
3158 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
3159 libopencore_amrnb_decoder_deps="libopencore_amrnb"
3160 libopencore_amrnb_encoder_deps="libopencore_amrnb"
3161 libopencore_amrnb_encoder_select="audio_frame_queue"
3162 libopencore_amrwb_decoder_deps="libopencore_amrwb"
3163 libopenh264_decoder_deps="libopenh264"
3164 libopenh264_decoder_select="h264_mp4toannexb_bsf"
3165 libopenh264_encoder_deps="libopenh264"
3166 libopenjpeg_decoder_deps="libopenjpeg"
3167 libopenjpeg_encoder_deps="libopenjpeg"
3168 libopenmpt_demuxer_deps="libopenmpt"
3169 libopus_decoder_deps="libopus"
3170 libopus_encoder_deps="libopus"
3171 libopus_encoder_select="audio_frame_queue"
3172 librsvg_decoder_deps="librsvg"
3173 libshine_encoder_deps="libshine"
3174 libshine_encoder_select="audio_frame_queue"
3175 libspeex_decoder_deps="libspeex"
3176 libspeex_encoder_deps="libspeex"
3177 libspeex_encoder_select="audio_frame_queue"
3178 libtheora_encoder_deps="libtheora"
3179 libtwolame_encoder_deps="libtwolame"
3180 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
3181 libvorbis_decoder_deps="libvorbis"
3182 libvorbis_encoder_deps="libvorbis libvorbisenc"
3183 libvorbis_encoder_select="audio_frame_queue"
3184 libvpx_vp8_decoder_deps="libvpx"
3185 libvpx_vp8_encoder_deps="libvpx"
3186 libvpx_vp9_decoder_deps="libvpx"
3187 libvpx_vp9_encoder_deps="libvpx"
3188 libwavpack_encoder_deps="libwavpack"
3189 libwavpack_encoder_select="audio_frame_queue"
3190 libwebp_encoder_deps="libwebp"
3191 libwebp_anim_encoder_deps="libwebp"
3192 libx262_encoder_deps="libx262"
3193 libx264_encoder_deps="libx264"
3194 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
3195 libx264rgb_encoder_select="libx264_encoder"
3196 libx265_encoder_deps="libx265"
3197 libxavs_encoder_deps="libxavs"
3198 libxavs2_encoder_deps="libxavs2"
3199 libxvid_encoder_deps="libxvid"
3200 libzvbi_teletext_decoder_deps="libzvbi"
3201 vapoursynth_demuxer_deps="vapoursynth"
3202 videotoolbox_suggest="coreservices"
3203 videotoolbox_deps="corefoundation coremedia corevideo"
3204 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
3205
3206 # demuxers / muxers
3207 ac3_demuxer_select="ac3_parser"
3208 aiff_muxer_select="iso_media"
3209 asf_demuxer_select="riffdec"
3210 asf_o_demuxer_select="riffdec"
3211 asf_muxer_select="riffenc"
3212 asf_stream_muxer_select="asf_muxer"
3213 avi_demuxer_select="iso_media riffdec exif"
3214 avi_muxer_select="riffenc"
3215 caf_demuxer_select="iso_media riffdec"
3216 caf_muxer_select="iso_media"
3217 dash_muxer_select="mp4_muxer"
3218 dash_demuxer_deps="libxml2"
3219 dirac_demuxer_select="dirac_parser"
3220 dts_demuxer_select="dca_parser"
3221 dtshd_demuxer_select="dca_parser"
3222 dv_demuxer_select="dvprofile"
3223 dv_muxer_select="dvprofile"
3224 dxa_demuxer_select="riffdec"
3225 eac3_demuxer_select="ac3_parser"
3226 f4v_muxer_select="mov_muxer"
3227 fifo_muxer_deps="threads"
3228 flac_demuxer_select="flac_parser"
3229 hds_muxer_select="flv_muxer"
3230 hls_muxer_select="mpegts_muxer"
3231 hls_muxer_suggest="gcrypt openssl"
3232 image2_alias_pix_demuxer_select="image2_demuxer"
3233 image2_brender_pix_demuxer_select="image2_demuxer"
3234 ipod_muxer_select="mov_muxer"
3235 ismv_muxer_select="mov_muxer"
3236 ivf_muxer_select="av1_metadata_bsf vp9_superframe_bsf"
3237 matroska_audio_muxer_select="matroska_muxer"
3238 matroska_demuxer_select="iso_media riffdec"
3239 matroska_demuxer_suggest="bzlib lzo zlib"
3240 matroska_muxer_select="iso_media riffenc"
3241 mmf_muxer_select="riffenc"
3242 mov_demuxer_select="iso_media riffdec"
3243 mov_demuxer_suggest="zlib"
3244 mov_muxer_select="iso_media riffenc rtpenc_chain"
3245 mp3_demuxer_select="mpegaudio_parser"
3246 mp3_muxer_select="mpegaudioheader"
3247 mp4_muxer_select="mov_muxer"
3248 mpegts_demuxer_select="iso_media"
3249 mpegts_muxer_select="adts_muxer latm_muxer"
3250 mpegtsraw_demuxer_select="mpegts_demuxer"
3251 mxf_d10_muxer_select="mxf_muxer"
3252 mxf_opatom_muxer_select="mxf_muxer"
3253 nut_muxer_select="riffenc"
3254 nuv_demuxer_select="riffdec"
3255 oga_muxer_select="ogg_muxer"
3256 ogg_demuxer_select="dirac_parse"
3257 ogv_muxer_select="ogg_muxer"
3258 opus_muxer_select="ogg_muxer"
3259 psp_muxer_select="mov_muxer"
3260 rtp_demuxer_select="sdp_demuxer"
3261 rtp_muxer_select="golomb"
3262 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3263 rtsp_demuxer_select="http_protocol rtpdec"
3264 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3265 sap_demuxer_select="sdp_demuxer"
3266 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3267 sdp_demuxer_select="rtpdec"
3268 smoothstreaming_muxer_select="ismv_muxer"
3269 spdif_demuxer_select="adts_header"
3270 spdif_muxer_select="adts_header"
3271 spx_muxer_select="ogg_muxer"
3272 swf_demuxer_suggest="zlib"
3273 tak_demuxer_select="tak_parser"
3274 tg2_muxer_select="mov_muxer"
3275 tgp_muxer_select="mov_muxer"
3276 vobsub_demuxer_select="mpegps_demuxer"
3277 w64_demuxer_select="wav_demuxer"
3278 w64_muxer_select="wav_muxer"
3279 wav_demuxer_select="riffdec"
3280 wav_muxer_select="riffenc"
3281 webm_muxer_select="iso_media riffenc"
3282 webm_dash_manifest_demuxer_select="matroska_demuxer"
3283 wtv_demuxer_select="mpegts_demuxer riffdec"
3284 wtv_muxer_select="mpegts_muxer riffenc"
3285 xmv_demuxer_select="riffdec"
3286 xwma_demuxer_select="riffdec"
3287
3288 # indevs / outdevs
3289 android_camera_indev_deps="android camera2ndk mediandk pthreads"
3290 android_camera_indev_extralibs="-landroid -lcamera2ndk -lmediandk"
3291 alsa_indev_deps="alsa"
3292 alsa_outdev_deps="alsa"
3293 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3294 avfoundation_indev_suggest="coregraphics applicationservices"
3295 avfoundation_indev_extralibs="-framework Foundation"
3296 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3297 caca_outdev_deps="libcaca"
3298 decklink_deps_any="libdl LoadLibrary"
3299 decklink_indev_deps="decklink threads"
3300 decklink_indev_extralibs="-lstdc++"
3301 decklink_outdev_deps="decklink threads"
3302 decklink_outdev_suggest="libklvanc"
3303 decklink_outdev_extralibs="-lstdc++"
3304 dshow_indev_deps="IBaseFilter"
3305 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3306 fbdev_indev_deps="linux_fb_h"
3307 fbdev_outdev_deps="linux_fb_h"
3308 gdigrab_indev_deps="CreateDIBSection"
3309 gdigrab_indev_extralibs="-lgdi32"
3310 gdigrab_indev_select="bmp_decoder"
3311 iec61883_indev_deps="libiec61883"
3312 jack_indev_deps="libjack"
3313 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3314 kmsgrab_indev_deps="libdrm"
3315 lavfi_indev_deps="avfilter"
3316 libcdio_indev_deps="libcdio"
3317 libdc1394_indev_deps="libdc1394"
3318 openal_indev_deps="openal"
3319 opengl_outdev_deps="opengl"
3320 opengl_outdev_suggest="sdl2"
3321 oss_indev_deps_any="sys_soundcard_h"
3322 oss_outdev_deps_any="sys_soundcard_h"
3323 pulse_indev_deps="libpulse"
3324 pulse_outdev_deps="libpulse"
3325 sdl2_outdev_deps="sdl2"
3326 sndio_indev_deps="sndio"
3327 sndio_outdev_deps="sndio"
3328 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3329 v4l2_indev_suggest="libv4l2"
3330 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3331 v4l2_outdev_suggest="libv4l2"
3332 vfwcap_indev_deps="vfw32 vfwcap_defines"
3333 xcbgrab_indev_deps="libxcb"
3334 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3335 xv_outdev_deps="xlib"
3336
3337 # protocols
3338 async_protocol_deps="threads"
3339 bluray_protocol_deps="libbluray"
3340 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3341 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl mbedtls"
3342 ffrtmpcrypt_protocol_select="tcp_protocol"
3343 ffrtmphttp_protocol_conflict="librtmp_protocol"
3344 ffrtmphttp_protocol_select="http_protocol"
3345 ftp_protocol_select="tcp_protocol"
3346 gopher_protocol_select="network"
3347 http_protocol_select="tcp_protocol"
3348 http_protocol_suggest="zlib"
3349 httpproxy_protocol_select="tcp_protocol"
3350 httpproxy_protocol_suggest="zlib"
3351 https_protocol_select="tls_protocol"
3352 https_protocol_suggest="zlib"
3353 icecast_protocol_select="http_protocol"
3354 mmsh_protocol_select="http_protocol"
3355 mmst_protocol_select="network"
3356 rtmp_protocol_conflict="librtmp_protocol"
3357 rtmp_protocol_select="tcp_protocol"
3358 rtmp_protocol_suggest="zlib"
3359 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3360 rtmpe_protocol_suggest="zlib"
3361 rtmps_protocol_conflict="librtmp_protocol"
3362 rtmps_protocol_select="tls_protocol"
3363 rtmps_protocol_suggest="zlib"
3364 rtmpt_protocol_select="ffrtmphttp_protocol"
3365 rtmpt_protocol_suggest="zlib"
3366 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3367 rtmpte_protocol_suggest="zlib"
3368 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3369 rtmpts_protocol_suggest="zlib"
3370 rtp_protocol_select="udp_protocol"
3371 schannel_conflict="openssl gnutls libtls mbedtls"
3372 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3373 sctp_protocol_select="network"
3374 securetransport_conflict="openssl gnutls libtls mbedtls"
3375 srtp_protocol_select="rtp_protocol srtp"
3376 tcp_protocol_select="network"
3377 tls_protocol_deps_any="gnutls openssl schannel securetransport libtls mbedtls"
3378 tls_protocol_select="tcp_protocol"
3379 udp_protocol_select="network"
3380 udplite_protocol_select="network"
3381 unix_protocol_deps="sys_un_h"
3382 unix_protocol_select="network"
3383
3384 # external library protocols
3385 librtmp_protocol_deps="librtmp"
3386 librtmpe_protocol_deps="librtmp"
3387 librtmps_protocol_deps="librtmp"
3388 librtmpt_protocol_deps="librtmp"
3389 librtmpte_protocol_deps="librtmp"
3390 libsmbclient_protocol_deps="libsmbclient gplv3"
3391 libsrt_protocol_deps="libsrt"
3392 libsrt_protocol_select="network"
3393 libssh_protocol_deps="libssh"
3394 libtls_conflict="openssl gnutls mbedtls"
3395
3396 # filters
3397 afftdn_filter_deps="avcodec"
3398 afftdn_filter_select="fft"
3399 afftfilt_filter_deps="avcodec"
3400 afftfilt_filter_select="fft"
3401 afir_filter_deps="avcodec"
3402 afir_filter_select="fft"
3403 amovie_filter_deps="avcodec avformat"
3404 aresample_filter_deps="swresample"
3405 asr_filter_deps="pocketsphinx"
3406 ass_filter_deps="libass"
3407 atempo_filter_deps="avcodec"
3408 atempo_filter_select="rdft"
3409 avgblur_opencl_filter_deps="opencl"
3410 azmq_filter_deps="libzmq"
3411 blackframe_filter_deps="gpl"
3412 bm3d_filter_deps="avcodec"
3413 bm3d_filter_select="dct"
3414 boxblur_filter_deps="gpl"
3415 boxblur_opencl_filter_deps="opencl gpl"
3416 bs2b_filter_deps="libbs2b"
3417 colorkey_opencl_filter_deps="opencl"
3418 colormatrix_filter_deps="gpl"
3419 convolution_opencl_filter_deps="opencl"
3420 convolve_filter_deps="avcodec"
3421 convolve_filter_select="fft"
3422 coreimage_filter_deps="coreimage appkit"
3423 coreimage_filter_extralibs="-framework OpenGL"
3424 coreimagesrc_filter_deps="coreimage appkit"
3425 coreimagesrc_filter_extralibs="-framework OpenGL"
3426 cover_rect_filter_deps="avcodec avformat gpl"
3427 cropdetect_filter_deps="gpl"
3428 deconvolve_filter_deps="avcodec"
3429 deconvolve_filter_select="fft"
3430 deinterlace_qsv_filter_deps="libmfx"
3431 deinterlace_vaapi_filter_deps="vaapi"
3432 delogo_filter_deps="gpl"
3433 denoise_vaapi_filter_deps="vaapi"
3434 deshake_filter_select="pixelutils"
3435 dilation_opencl_filter_deps="opencl"
3436 drawtext_filter_deps="libfreetype"
3437 drawtext_filter_suggest="libfontconfig libfribidi"
3438 elbg_filter_deps="avcodec"
3439 eq_filter_deps="gpl"
3440 erosion_opencl_filter_deps="opencl"
3441 fftfilt_filter_deps="avcodec"
3442 fftfilt_filter_select="rdft"
3443 fftdnoiz_filter_deps="avcodec"
3444 fftdnoiz_filter_select="fft"
3445 find_rect_filter_deps="avcodec avformat gpl"
3446 firequalizer_filter_deps="avcodec"
3447 firequalizer_filter_select="rdft"
3448 flite_filter_deps="libflite"
3449 framerate_filter_select="scene_sad"
3450 freezedetect_filter_select="scene_sad"
3451 frei0r_filter_deps="frei0r libdl"
3452 frei0r_src_filter_deps="frei0r libdl"
3453 fspp_filter_deps="gpl"
3454 geq_filter_deps="gpl"
3455 histeq_filter_deps="gpl"
3456 hqdn3d_filter_deps="gpl"
3457 interlace_filter_deps="gpl"
3458 kerndeint_filter_deps="gpl"
3459 ladspa_filter_deps="ladspa libdl"
3460 lensfun_filter_deps="liblensfun version3"
3461 lv2_filter_deps="lv2"
3462 mcdeint_filter_deps="avcodec gpl"
3463 movie_filter_deps="avcodec avformat"
3464 mpdecimate_filter_deps="gpl"
3465 mpdecimate_filter_select="pixelutils"
3466 minterpolate_filter_select="scene_sad"
3467 mptestsrc_filter_deps="gpl"
3468 negate_filter_deps="lut_filter"
3469 nnedi_filter_deps="gpl"
3470 ocr_filter_deps="libtesseract"
3471 ocv_filter_deps="libopencv"
3472 openclsrc_filter_deps="opencl"
3473 overlay_opencl_filter_deps="opencl"
3474 overlay_qsv_filter_deps="libmfx"
3475 overlay_qsv_filter_select="qsvvpp"
3476 owdenoise_filter_deps="gpl"
3477 pan_filter_deps="swresample"
3478 perspective_filter_deps="gpl"
3479 phase_filter_deps="gpl"
3480 pp7_filter_deps="gpl"
3481 pp_filter_deps="gpl postproc"
3482 prewitt_opencl_filter_deps="opencl"
3483 procamp_vaapi_filter_deps="vaapi"
3484 program_opencl_filter_deps="opencl"
3485 pullup_filter_deps="gpl"
3486 removelogo_filter_deps="avcodec avformat swscale"
3487 repeatfields_filter_deps="gpl"
3488 resample_filter_deps="avresample"
3489 roberts_opencl_filter_deps="opencl"
3490 rubberband_filter_deps="librubberband"
3491 sab_filter_deps="gpl swscale"
3492 scale2ref_filter_deps="swscale"
3493 scale_filter_deps="swscale"
3494 scale_qsv_filter_deps="libmfx"
3495 select_filter_select="scene_sad"
3496 sharpness_vaapi_filter_deps="vaapi"
3497 showcqt_filter_deps="avcodec avformat swscale"
3498 showcqt_filter_suggest="libfontconfig libfreetype"
3499 showcqt_filter_select="fft"
3500 showfreqs_filter_deps="avcodec"
3501 showfreqs_filter_select="fft"
3502 showspectrum_filter_deps="avcodec"
3503 showspectrum_filter_select="fft"
3504 showspectrumpic_filter_deps="avcodec"
3505 showspectrumpic_filter_select="fft"
3506 signature_filter_deps="gpl avcodec avformat"
3507 smartblur_filter_deps="gpl swscale"
3508 sobel_opencl_filter_deps="opencl"
3509 sofalizer_filter_deps="libmysofa avcodec"
3510 sofalizer_filter_select="fft"
3511 spectrumsynth_filter_deps="avcodec"
3512 spectrumsynth_filter_select="fft"
3513 spp_filter_deps="gpl avcodec"
3514 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3515 sr_filter_deps="avformat swscale"
3516 sr_filter_select="dnn"
3517 stereo3d_filter_deps="gpl"
3518 subtitles_filter_deps="avformat avcodec libass"
3519 super2xsai_filter_deps="gpl"
3520 pixfmts_super2xsai_test_deps="super2xsai_filter"
3521 tinterlace_filter_deps="gpl"
3522 tinterlace_merge_test_deps="tinterlace_filter"
3523 tinterlace_pad_test_deps="tinterlace_filter"
3524 tonemap_filter_deps="const_nan"
3525 tonemap_opencl_filter_deps="opencl const_nan"
3526 transpose_opencl_filter_deps="opencl"
3527 transpose_vaapi_filter_deps="vaapi VAProcPipelineCaps_rotation_flags"
3528 unsharp_opencl_filter_deps="opencl"
3529 uspp_filter_deps="gpl avcodec"
3530 vaguedenoiser_filter_deps="gpl"
3531 vidstabdetect_filter_deps="libvidstab"
3532 vidstabtransform_filter_deps="libvidstab"
3533 libvmaf_filter_deps="libvmaf pthreads"
3534 zmq_filter_deps="libzmq"
3535 zoompan_filter_deps="swscale"
3536 zscale_filter_deps="libzimg const_nan"
3537 scale_vaapi_filter_deps="vaapi"
3538 vpp_qsv_filter_deps="libmfx"
3539 vpp_qsv_filter_select="qsvvpp"
3540 yadif_cuda_filter_deps="ffnvcodec cuda_nvcc"
3541
3542 # examples
3543 avio_dir_cmd_deps="avformat avutil"
3544 avio_reading_deps="avformat avcodec avutil"
3545 decode_audio_example_deps="avcodec avutil"
3546 decode_video_example_deps="avcodec avutil"
3547 demuxing_decoding_example_deps="avcodec avformat avutil"
3548 encode_audio_example_deps="avcodec avutil"
3549 encode_video_example_deps="avcodec avutil"
3550 extract_mvs_example_deps="avcodec avformat avutil"
3551 filter_audio_example_deps="avfilter avutil"
3552 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3553 filtering_video_example_deps="avfilter avcodec avformat avutil"
3554 http_multiclient_example_deps="avformat avutil fork"
3555 hw_decode_example_deps="avcodec avformat avutil"
3556 metadata_example_deps="avformat avutil"
3557 muxing_example_deps="avcodec avformat avutil swscale"
3558 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3559 remuxing_example_deps="avcodec avformat avutil"
3560 resampling_audio_example_deps="avutil swresample"
3561 scaling_video_example_deps="avutil swscale"
3562 transcode_aac_example_deps="avcodec avformat swresample"
3563 transcoding_example_deps="avfilter avcodec avformat avutil"
3564 vaapi_encode_example_deps="avcodec avutil h264_vaapi_encoder"
3565 vaapi_transcode_example_deps="avcodec avformat avutil h264_vaapi_encoder"
3566
3567 # EXTRALIBS_LIST
3568 cpu_init_extralibs="pthreads_extralibs"
3569 cws2fws_extralibs="zlib_extralibs"
3570
3571 # libraries, in any order
3572 avcodec_deps="avutil"
3573 avcodec_suggest="libm"
3574 avcodec_select="null_bsf"
3575 avdevice_deps="avformat avcodec avutil"
3576 avdevice_suggest="libm"
3577 avfilter_deps="avutil"
3578 avfilter_suggest="libm"
3579 avformat_deps="avcodec avutil"
3580 avformat_suggest="libm network zlib"
3581 avresample_deps="avutil"
3582 avresample_suggest="libm"
3583 avutil_suggest="clock_gettime ffnvcodec libm libdrm libmfx opencl user32 vaapi videotoolbox corefoundation corevideo coremedia bcrypt"
3584 postproc_deps="avutil gpl"
3585 postproc_suggest="libm"
3586 swresample_deps="avutil"
3587 swresample_suggest="libm libsoxr"
3588 swscale_deps="avutil"
3589 swscale_suggest="libm"
3590
3591 avcodec_extralibs="pthreads_extralibs iconv_extralibs dxva2_extralibs"
3592 avfilter_extralibs="pthreads_extralibs"
3593 avutil_extralibs="d3d11va_extralibs nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3594
3595 # programs
3596 ffmpeg_deps="avcodec avfilter avformat"
3597 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3598                hflip_filter null_filter
3599                transpose_filter trim_filter vflip_filter"
3600 ffmpeg_suggest="ole32 psapi shell32"
3601 ffplay_deps="avcodec avformat swscale swresample sdl2"
3602 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3603 ffplay_suggest="shell32"
3604 ffprobe_deps="avcodec avformat"
3605 ffprobe_suggest="shell32"
3606
3607 # documentation
3608 podpages_deps="perl"
3609 manpages_deps="perl pod2man"
3610 htmlpages_deps="perl"
3611 htmlpages_deps_any="makeinfo_html texi2html"
3612 txtpages_deps="perl makeinfo"
3613 doc_deps_any="manpages htmlpages podpages txtpages"
3614
3615 # default parameters
3616
3617 logfile="ffbuild/config.log"
3618
3619 # installation paths
3620 prefix_default="/usr/local"
3621 bindir_default='${prefix}/bin'
3622 datadir_default='${prefix}/share/ffmpeg'
3623 docdir_default='${prefix}/share/doc/ffmpeg'
3624 incdir_default='${prefix}/include'
3625 libdir_default='${prefix}/lib'
3626 mandir_default='${prefix}/share/man'
3627
3628 # toolchain
3629 ar_default="ar"
3630 cc_default="gcc"
3631 cxx_default="g++"
3632 host_cc_default="gcc"
3633 doxygen_default="doxygen"
3634 install="install"
3635 ln_s_default="ln -s -f"
3636 nm_default="nm -g"
3637 pkg_config_default=pkg-config
3638 ranlib_default="ranlib"
3639 strip_default="strip"
3640 version_script='--version-script'
3641 objformat="elf32"
3642 x86asmexe_default="nasm"
3643 windres_default="windres"
3644 nvcc_default="nvcc"
3645 nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
3646 striptype="direct"
3647
3648 # OS
3649 target_os_default=$(tolower $(uname -s))
3650 host_os=$target_os_default
3651
3652 # machine
3653 if test "$target_os_default" = aix; then
3654     arch_default=$(uname -p)
3655     strip_default="strip -X32_64"
3656     nm_default="nm -g -X32_64"
3657 else
3658     arch_default=$(uname -m)
3659 fi
3660 cpu="generic"
3661 intrinsics="none"
3662
3663 # configurable options
3664 enable $PROGRAM_LIST
3665 enable $DOCUMENT_LIST
3666 enable $EXAMPLE_LIST
3667 enable $(filter_out avresample $LIBRARY_LIST)
3668 enable stripping
3669
3670 enable asm
3671 enable debug
3672 enable doc
3673 enable faan faandct faanidct
3674 enable optimizations
3675 enable runtime_cpudetect
3676 enable safe_bitstream_reader
3677 enable static
3678 enable swscale_alpha
3679 enable valgrind_backtrace
3680
3681 sws_max_filter_size_default=256
3682 set_default sws_max_filter_size
3683
3684 # internal components are enabled by default
3685 enable $EXTRALIBS_LIST
3686
3687 # Avoid external, non-system, libraries getting enabled by dependency resolution
3688 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3689
3690 # build settings
3691 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3692 LIBPREF="lib"
3693 LIBSUF=".a"
3694 FULLNAME='$(NAME)$(BUILDSUF)'
3695 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3696 SLIBPREF="lib"
3697 SLIBSUF=".so"
3698 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3699 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3700 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3701 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3702 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3703 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3704 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3705
3706 asflags_filter=echo
3707 cflags_filter=echo
3708 ldflags_filter=echo
3709
3710 AS_C='-c'
3711 AS_O='-o $@'
3712 CC_C='-c'
3713 CC_E='-E -o $@'
3714 CC_O='-o $@'
3715 CXX_C='-c'
3716 CXX_O='-o $@'
3717 OBJCC_C='-c'
3718 OBJCC_E='-E -o $@'
3719 OBJCC_O='-o $@'
3720 X86ASM_O='-o $@'
3721 LD_O='-o $@'
3722 LD_LIB='-l%'
3723 LD_PATH='-L'
3724 HOSTCC_C='-c'
3725 HOSTCC_E='-E -o $@'
3726 HOSTCC_O='-o $@'
3727 HOSTLD_O='-o $@'
3728 NVCC_C='-c'
3729 NVCC_O='-o $@'
3730
3731 host_extralibs='-lm'
3732 host_cflags_filter=echo
3733 host_ldflags_filter=echo
3734
3735 target_path='$(CURDIR)'
3736
3737 # since the object filename is not given with the -MM flag, the compiler
3738 # is only able to print the basename, and we must add the path ourselves
3739 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3740 DEPFLAGS='-MM'
3741
3742 mkdir -p ffbuild
3743
3744 # find source path
3745 if test -f configure; then
3746     source_path=.
3747 elif test -f src/configure; then
3748     source_path=src
3749 else
3750     source_path=$(cd $(dirname "$0"); pwd)
3751     case "$source_path" in
3752         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3753     esac
3754     test -e "$source_path/config.h" &&
3755         die "Out of tree builds are impossible with config.h in source dir."
3756 fi
3757
3758 for v in "$@"; do
3759     r=${v#*=}
3760     l=${v%"$r"}
3761     r=$(sh_quote "$r")
3762     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3763 done
3764
3765 find_things_extern(){
3766     thing=$1
3767     pattern=$2
3768     file=$source_path/$3
3769     out=${4:-$thing}
3770     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$out/p" "$file"
3771 }
3772
3773 find_filters_extern(){
3774     file=$source_path/$1
3775     sed -n 's/^extern AVFilter ff_[avfsinkrc]\{2,5\}_\([[:alnum:]_]\{1,\}\);/\1_filter/p' $file
3776 }
3777
3778 FILTER_LIST=$(find_filters_extern libavfilter/allfilters.c)
3779 OUTDEV_LIST=$(find_things_extern muxer AVOutputFormat libavdevice/alldevices.c outdev)
3780 INDEV_LIST=$(find_things_extern demuxer AVInputFormat libavdevice/alldevices.c indev)
3781 MUXER_LIST=$(find_things_extern muxer AVOutputFormat libavformat/allformats.c)
3782 DEMUXER_LIST=$(find_things_extern demuxer AVInputFormat libavformat/allformats.c)
3783 ENCODER_LIST=$(find_things_extern encoder AVCodec libavcodec/allcodecs.c)
3784 DECODER_LIST=$(find_things_extern decoder AVCodec libavcodec/allcodecs.c)
3785 CODEC_LIST="
3786     $ENCODER_LIST
3787     $DECODER_LIST
3788 "
3789 PARSER_LIST=$(find_things_extern parser AVCodecParser libavcodec/parsers.c)
3790 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3791 HWACCEL_LIST=$(find_things_extern hwaccel AVHWAccel libavcodec/hwaccels.h)
3792 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3793
3794 AVCODEC_COMPONENTS_LIST="
3795     $BSF_LIST
3796     $DECODER_LIST
3797     $ENCODER_LIST
3798     $HWACCEL_LIST
3799     $PARSER_LIST
3800 "
3801
3802 AVDEVICE_COMPONENTS_LIST="
3803     $INDEV_LIST
3804     $OUTDEV_LIST
3805 "
3806
3807 AVFILTER_COMPONENTS_LIST="
3808     $FILTER_LIST
3809 "
3810
3811 AVFORMAT_COMPONENTS_LIST="
3812     $DEMUXER_LIST
3813     $MUXER_LIST
3814     $PROTOCOL_LIST
3815 "
3816
3817 ALL_COMPONENTS="
3818     $AVCODEC_COMPONENTS_LIST
3819     $AVDEVICE_COMPONENTS_LIST
3820     $AVFILTER_COMPONENTS_LIST
3821     $AVFORMAT_COMPONENTS_LIST
3822 "
3823
3824 for n in $COMPONENT_LIST; do
3825     v=$(toupper ${n%s})_LIST
3826     eval enable \$$v
3827     eval ${n}_if_any="\$$v"
3828 done
3829
3830 enable $ARCH_EXT_LIST
3831
3832 die_unknown(){
3833     echo "Unknown option \"$1\"."
3834     echo "See $0 --help for available options."
3835     exit 1
3836 }
3837
3838 print_in_columns() {
3839     cols=$(expr $ncols / 24)
3840     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3841 }
3842
3843 show_list() {
3844     suffix=_$1
3845     shift
3846     echo $* | sed s/$suffix//g | print_in_columns
3847     exit 0
3848 }
3849
3850 rand_list(){
3851     IFS=', '
3852     set -- $*
3853     unset IFS
3854     for thing; do
3855         comp=${thing%:*}
3856         prob=${thing#$comp}
3857         prob=${prob#:}
3858         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3859         echo "prob ${prob:-0.5}"
3860         printf '%s\n' $comp
3861     done
3862 }
3863
3864 do_random(){
3865     action=$1
3866     shift
3867     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3868     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3869 }
3870
3871 for opt do
3872     optval="${opt#*=}"
3873     case "$opt" in
3874         --extra-ldflags=*)
3875             add_ldflags $optval
3876         ;;
3877         --extra-ldexeflags=*)
3878             add_ldexeflags $optval
3879         ;;
3880         --extra-ldsoflags=*)
3881             add_ldsoflags $optval
3882         ;;
3883         --extra-ldlibflags=*)
3884             warn "The --extra-ldlibflags option is only provided for compatibility and will be\n"\
3885                  "removed in the future. Use --extra-ldsoflags instead."
3886             add_ldsoflags $optval
3887         ;;
3888         --extra-libs=*)
3889             add_extralibs $optval
3890         ;;
3891         --disable-devices)
3892             disable $INDEV_LIST $OUTDEV_LIST
3893         ;;
3894         --enable-debug=*)
3895             debuglevel="$optval"
3896         ;;
3897         --disable-programs)
3898             disable $PROGRAM_LIST
3899         ;;
3900         --disable-everything)
3901             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3902         ;;
3903         --disable-all)
3904             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3905             disable $LIBRARY_LIST $PROGRAM_LIST doc
3906             enable avutil
3907         ;;
3908         --enable-random|--disable-random)
3909             action=${opt%%-random}
3910             do_random ${action#--} $COMPONENT_LIST
3911         ;;
3912         --enable-random=*|--disable-random=*)
3913             action=${opt%%-random=*}
3914             do_random ${action#--} $optval
3915         ;;
3916         --enable-sdl)
3917             enable sdl2
3918         ;;
3919         --enable-*=*|--disable-*=*)
3920             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3921             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3922             eval list=\$$(toupper $thing)_LIST
3923             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3924             list=$(filter "$name" $list)
3925             [ "$list" = "" ] && warn "Option $opt did not match anything"
3926             test $action = enable && warn_if_gets_disabled $list
3927             $action $list
3928         ;;
3929         --enable-yasm|--disable-yasm)
3930             warn "The ${opt} option is only provided for compatibility and will be\n"\
3931                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3932             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3933         ;;
3934         --yasmexe=*)
3935             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3936                  "removed in the future. Use --x86asmexe instead."
3937             x86asmexe="$optval"
3938         ;;
3939         --enable-?*|--disable-?*)
3940             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3941             if is_in $option $COMPONENT_LIST; then
3942                 test $action = disable && action=unset
3943                 eval $action \$$(toupper ${option%s})_LIST
3944             elif is_in $option $CMDLINE_SELECT; then
3945                 $action $option
3946             else
3947                 die_unknown $opt
3948             fi
3949         ;;
3950         --list-*)
3951             NAME="${opt#--list-}"
3952             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3953             NAME=${NAME%s}
3954             eval show_list $NAME \$$(toupper $NAME)_LIST
3955         ;;
3956         --help|-h) show_help
3957         ;;
3958         --quiet|-q) quiet=yes
3959         ;;
3960         --fatal-warnings) enable fatal_warnings
3961         ;;
3962         --libfuzzer=*)
3963             libfuzzer_path="$optval"
3964         ;;
3965         *)
3966             optname="${opt%%=*}"
3967             optname="${optname#--}"
3968             optname=$(echo "$optname" | sed 's/-/_/g')
3969             if is_in $optname $CMDLINE_SET; then
3970                 eval $optname='$optval'
3971             elif is_in $optname $CMDLINE_APPEND; then
3972                 append $optname "$optval"
3973             else
3974                 die_unknown $opt
3975             fi
3976         ;;
3977     esac
3978 done
3979
3980 for e in $env; do
3981     eval "export $e"
3982 done
3983
3984 if disabled autodetect; then
3985
3986     # Unless iconv is explicitely disabled by the user, we still want to probe
3987     # for the iconv from the libc.
3988     disabled iconv || enable libc_iconv
3989
3990     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3991     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3992 fi
3993 # Mark specifically enabled, but normally autodetected libraries as requested.
3994 for lib in $AUTODETECT_LIBS; do
3995     enabled $lib && request $lib
3996 done
3997 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
3998 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3999 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
4000
4001 disabled logging && logfile=/dev/null
4002
4003 # command line configuration sanity checks
4004
4005 # we need to build at least one lib type
4006 if ! enabled_any static shared; then
4007     cat <<EOF
4008 At least one library type must be built.
4009 Specify --enable-static to build the static libraries or --enable-shared to
4010 build the shared libraries as well. To only build the shared libraries specify
4011 --disable-static in addition to --enable-shared.
4012 EOF
4013     exit 1
4014 fi
4015
4016 die_license_disabled() {
4017     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
4018 }
4019
4020 die_license_disabled_gpl() {
4021     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
4022 }
4023
4024 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
4025 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
4026
4027 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
4028 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
4029
4030 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4031
4032 if enabled nonfree; then
4033     license="nonfree and unredistributable"
4034 elif enabled gplv3; then
4035     license="GPL version 3 or later"
4036 elif enabled lgplv3; then
4037     license="LGPL version 3 or later"
4038 elif enabled gpl; then
4039     license="GPL version 2 or later"
4040 else
4041     license="LGPL version 2.1 or later"
4042 fi
4043
4044 enabled_all gnutls openssl &&
4045     die "GnuTLS and OpenSSL must not be enabled at the same time."
4046
4047 enabled_all gnutls mbedtls &&
4048     die "GnuTLS and mbedTLS must not be enabled at the same time."
4049
4050 enabled_all openssl mbedtls &&
4051     die "OpenSSL and mbedTLS must not be enabled at the same time."
4052
4053 # Disable all the library-specific components if the library itself
4054 # is disabled, see AVCODEC_LIST and following _LIST variables.
4055
4056 disable_components(){
4057     disabled ${1} && disable $(
4058         eval components="\$$(toupper ${1})_COMPONENTS"
4059         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
4060     )
4061 }
4062
4063 map 'disable_components $v' $LIBRARY_LIST
4064
4065 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
4066 set >> $logfile
4067
4068 test -n "$valgrind" && toolchain="valgrind-memcheck"
4069
4070 enabled ossfuzz && ! echo $CFLAGS | grep -q -- "-fsanitize="  && ! echo $CFLAGS | grep -q -- "-fcoverage-mapping" &&{
4071     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
4072     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
4073 }
4074
4075 case "$toolchain" in
4076     *-asan)
4077         cc_default="${toolchain%-asan}"
4078         add_cflags  -fsanitize=address
4079         add_ldflags -fsanitize=address
4080     ;;
4081     *-msan)
4082         cc_default="${toolchain%-msan}"
4083         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
4084         add_ldflags -fsanitize=memory
4085     ;;
4086     *-tsan)
4087         cc_default="${toolchain%-tsan}"
4088         add_cflags  -fsanitize=thread
4089         add_ldflags -fsanitize=thread
4090         case "$toolchain" in
4091             gcc-tsan)
4092                 add_cflags  -fPIC
4093                 add_ldflags -fPIC
4094                 ;;
4095         esac
4096     ;;
4097     *-usan)
4098         cc_default="${toolchain%-usan}"
4099         add_cflags  -fsanitize=undefined
4100         add_ldflags -fsanitize=undefined
4101     ;;
4102     valgrind-*)
4103         target_exec_default="valgrind"
4104         case "$toolchain" in
4105             valgrind-massif)
4106                 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"
4107                 ;;
4108             valgrind-memcheck)
4109                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
4110                 ;;
4111         esac
4112     ;;
4113     msvc)
4114         # Check whether the current MSVC version needs the C99 converter.
4115         # From MSVC 2013 (compiler major version 18) onwards, it does actually
4116         # support enough of C99 to build ffmpeg. Default to the new
4117         # behaviour if the regexp was unable to match anything, since this
4118         # successfully parses the version number of existing supported
4119         # versions that require the converter (MSVC 2010 and 2012).
4120         cl_major_ver=$(cl.exe 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
4121         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
4122             cc_default="cl.exe"
4123             cxx_default="cl.exe"
4124         else
4125             die "Unsupported MSVC version (2013 or newer required)"
4126         fi
4127         ld_default="$source_path/compat/windows/mslink"
4128         nm_default="dumpbin.exe -symbols"
4129         ar_default="lib.exe"
4130         case "$arch" in
4131         aarch64|arm64)
4132             as_default="armasm64.exe"
4133             ;;
4134         arm*)
4135             as_default="armasm.exe"
4136             ;;
4137         esac
4138         target_os_default="win32"
4139         # Use a relative path for TMPDIR. This makes sure all the
4140         # ffconf temp files are written with a relative path, avoiding
4141         # issues with msys/win32 path conversion for MSVC parameters
4142         # such as -Fo<file> or -out:<file>.
4143         TMPDIR=.
4144     ;;
4145     icl)
4146         cc_default="icl"
4147         ld_default="xilink"
4148         nm_default="dumpbin -symbols"
4149         ar_default="xilib"
4150         target_os_default="win32"
4151         TMPDIR=.
4152     ;;
4153     gcov)
4154         add_cflags  -fprofile-arcs -ftest-coverage
4155         add_ldflags -fprofile-arcs -ftest-coverage
4156     ;;
4157     llvm-cov)
4158         add_cflags -fprofile-arcs -ftest-coverage
4159         add_ldflags --coverage
4160     ;;
4161     hardened)
4162         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
4163         add_cflags   -fno-strict-overflow -fstack-protector-all
4164         add_ldflags  -Wl,-z,relro -Wl,-z,now
4165         add_cflags   -fPIE
4166         add_ldexeflags -fPIE -pie
4167     ;;
4168     ?*)
4169         die "Unknown toolchain $toolchain"
4170     ;;
4171 esac
4172
4173 if test -n "$cross_prefix"; then
4174     test -n "$arch" && test -n "$target_os" ||
4175         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
4176     enable cross_compile
4177 fi
4178
4179 set_default target_os
4180 if test "$target_os" = android; then
4181     cc_default="clang"
4182 fi
4183
4184 ar_default="${cross_prefix}${ar_default}"
4185 cc_default="${cross_prefix}${cc_default}"
4186 cxx_default="${cross_prefix}${cxx_default}"
4187 nm_default="${cross_prefix}${nm_default}"
4188 pkg_config_default="${cross_prefix}${pkg_config_default}"
4189 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
4190     ranlib_default="${cross_prefix}${ranlib_default} -D"
4191 else
4192     ranlib_default="${cross_prefix}${ranlib_default}"
4193 fi
4194 strip_default="${cross_prefix}${strip_default}"
4195 windres_default="${cross_prefix}${windres_default}"
4196
4197 sysinclude_default="${sysroot}/usr/include"
4198
4199 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
4200     target_exec x86asmexe nvcc
4201 enabled cross_compile || host_cc_default=$cc
4202 set_default host_cc
4203
4204 pkg_config_fail_message=""
4205 if ! $pkg_config --version >/dev/null 2>&1; then
4206     warn "$pkg_config not found, library detection may fail."
4207     pkg_config=false
4208 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
4209     pkg_config_fail_message="
4210 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
4211 fi
4212
4213 if test $doxygen != $doxygen_default && \
4214   ! $doxygen --version >/dev/null 2>&1; then
4215     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
4216 fi
4217
4218 exesuf() {
4219     case $1 in
4220         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
4221     esac
4222 }
4223
4224 EXESUF=$(exesuf $target_os)
4225 HOSTEXESUF=$(exesuf $host_os)
4226
4227 # set temporary file name
4228 : ${TMPDIR:=$TEMPDIR}
4229 : ${TMPDIR:=$TMP}
4230 : ${TMPDIR:=/tmp}
4231
4232 if [ -n "$tempprefix" ] ; then
4233     mktemp(){
4234         tmpname="$tempprefix.${HOSTNAME}.${UID}"
4235         echo "$tmpname"
4236         mkdir "$tmpname"
4237     }
4238 elif ! test_cmd mktemp -u XXXXXX; then
4239     # simple replacement for missing mktemp
4240     # NOT SAFE FOR GENERAL USE
4241     mktemp(){
4242         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
4243         echo "$tmpname"
4244         mkdir "$tmpname"
4245     }
4246 fi
4247
4248 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
4249     die "Unable to create temporary directory in $TMPDIR."
4250
4251 tmpfile(){
4252     tmp="${FFTMPDIR}/test"$2
4253     (set -C; exec > $tmp) 2> /dev/null ||
4254         die "Unable to create temporary file in $FFTMPDIR."
4255     eval $1=$tmp
4256 }
4257
4258 trap 'rm -rf -- "$FFTMPDIR"' EXIT
4259 trap 'exit 2' INT
4260
4261 tmpfile TMPASM .asm
4262 tmpfile TMPC   .c
4263 tmpfile TMPCPP .cpp
4264 tmpfile TMPE   $EXESUF
4265 tmpfile TMPH   .h
4266 tmpfile TMPM   .m
4267 tmpfile TMPCU  .cu
4268 tmpfile TMPO   .o
4269 tmpfile TMPS   .S
4270 tmpfile TMPSH  .sh
4271 tmpfile TMPV   .ver
4272
4273 unset -f mktemp
4274
4275 chmod +x $TMPE
4276
4277 # make sure we can execute files in $TMPDIR
4278 cat > $TMPSH 2>> $logfile <<EOF
4279 #! /bin/sh
4280 EOF
4281 chmod +x $TMPSH >> $logfile 2>&1
4282 if ! $TMPSH >> $logfile 2>&1; then
4283     cat <<EOF
4284 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
4285 variable to another directory and make sure that it is not mounted noexec.
4286 EOF
4287     die "Sanity test failed."
4288 fi
4289
4290 armasm_flags(){
4291     for flag; do
4292         case $flag in
4293             # Filter out MSVC cl.exe options from cflags that shouldn't
4294             # be passed to gas-preprocessor
4295             -M[TD]*)                                            ;;
4296             *)                  echo $flag                      ;;
4297         esac
4298    done
4299 }
4300
4301 cparser_flags(){
4302     for flag; do
4303         case $flag in
4304             -Wno-switch)             echo -Wno-switch-enum ;;
4305             -Wno-format-zero-length) ;;
4306             -Wdisabled-optimization) ;;
4307             -Wno-pointer-sign)       echo -Wno-other ;;
4308             *)                       echo $flag ;;
4309         esac
4310     done
4311 }
4312
4313 msvc_common_flags(){
4314     for flag; do
4315         case $flag in
4316             # In addition to specifying certain flags under the compiler
4317             # specific filters, they must be specified here as well or else the
4318             # generic catch all at the bottom will print the original flag.
4319             -Wall)                ;;
4320             -Wextra)              ;;
4321             -std=c99)             ;;
4322             # Common flags
4323             -fomit-frame-pointer) ;;
4324             -g)                   echo -Z7 ;;
4325             -fno-math-errno)      ;;
4326             -fno-common)          ;;
4327             -fno-signed-zeros)    ;;
4328             -fPIC)                ;;
4329             -mthumb)              ;;
4330             -march=*)             ;;
4331             -lz)                  echo zlib.lib ;;
4332             -lx264)               echo libx264.lib ;;
4333             -lstdc++)             ;;
4334             -l*)                  echo ${flag#-l}.lib ;;
4335             -LARGEADDRESSAWARE)   echo $flag ;;
4336             -L*)                  echo -libpath:${flag#-L} ;;
4337             *)                    echo $flag ;;
4338         esac
4339     done
4340 }
4341
4342 msvc_flags(){
4343     msvc_common_flags "$@"
4344     for flag; do
4345         case $flag in
4346             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4347                                        -wd4554 ;;
4348             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4349                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4350                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4351                                        -wd4307 \
4352                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4353         esac
4354     done
4355 }
4356
4357 icl_flags(){
4358     msvc_common_flags "$@"
4359     for flag; do
4360         case $flag in
4361             # Despite what Intel's documentation says -Wall, which is supported
4362             # on Windows, does enable remarks so disable them here.
4363             -Wall)                echo $flag -Qdiag-disable:remark ;;
4364             -std=c99)             echo -Qstd=c99 ;;
4365             -flto)                echo -ipo ;;
4366         esac
4367     done
4368 }
4369
4370 icc_flags(){
4371     for flag; do
4372         case $flag in
4373             -flto)                echo -ipo ;;
4374             *)                    echo $flag ;;
4375         esac
4376     done
4377 }
4378
4379 suncc_flags(){
4380     for flag; do
4381         case $flag in
4382             -march=*|-mcpu=*)
4383                 case "${flag#*=}" in
4384                     native)                   echo -xtarget=native       ;;
4385                     v9|niagara)               echo -xarch=sparc          ;;
4386                     ultrasparc)               echo -xarch=sparcvis       ;;
4387                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4388                     i586|pentium)             echo -xchip=pentium        ;;
4389                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4390                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4391                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4392                     pentium4*)          echo -xtarget=pentium4           ;;
4393                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4394                     *-sse3)             echo -xarch=sse3                 ;;
4395                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4396                     bonnell)                   echo -xarch=ssse3         ;;
4397                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4398                     westmere)                  echo -xtarget=westmere    ;;
4399                     silvermont)                echo -xarch=sse4_2        ;;
4400                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4401                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4402                                                echo -xarch=avx           ;;
4403                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4404                     btver1)                    echo -xarch=amdsse4a      ;;
4405                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4406                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4407                     k8|opteron|athlon64|athlon-fx)
4408                                                echo -xarch=sse2a         ;;
4409                     athlon*)                   echo -xarch=pentium_proa  ;;
4410                 esac
4411                 ;;
4412             -std=c99)             echo -xc99              ;;
4413             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4414             -fPIC)                echo -KPIC -xcode=pic32 ;;
4415             -W*,*)                echo $flag              ;;
4416             -f*-*|-W*|-mimpure-text)                      ;;
4417             -shared)              echo -G                 ;;
4418             *)                    echo $flag              ;;
4419         esac
4420     done
4421 }
4422
4423 probe_cc(){
4424     pfx=$1
4425     _cc=$2
4426     first=$3
4427
4428     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4429     unset _ld_o _ldflags _ld_lib _ld_path
4430     unset _depflags _DEPCMD _DEPFLAGS
4431     _flags_filter=echo
4432
4433     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4434         true # no-op to avoid reading stdin in following checks
4435     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4436         _type=llvm_gcc
4437         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4438         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4439         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4440         _cflags_speed='-O3'
4441         _cflags_size='-Os'
4442     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4443         _type=gcc
4444         gcc_version=$($_cc --version | head -n1)
4445         gcc_basever=$($_cc -dumpversion)
4446         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4447         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4448         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4449         case $gcc_basever in
4450             2) ;;
4451             2.*) ;;
4452             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4453         esac
4454         if [ "$first" = true ]; then
4455             case $gcc_basever in
4456                 4.2*)
4457                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4458             esac
4459         fi
4460         _cflags_speed='-O3'
4461         _cflags_size='-Os'
4462     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4463         _type=icc
4464         _ident=$($_cc --version | head -n1)
4465         _depflags='-MMD'
4466         _cflags_speed='-O3'
4467         _cflags_size='-Os'
4468         _cflags_noopt='-O1'
4469         _flags_filter=icc_flags
4470     elif $_cc -v 2>&1 | grep -q xlc; then
4471         _type=xlc
4472         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4473         _cflags_speed='-O5'
4474         _cflags_size='-O5 -qcompact'
4475     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4476         test -d "$sysroot" || die "No valid sysroot specified."
4477         _type=armcc
4478         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4479         armcc_conf="$PWD/armcc.conf"
4480         $_cc --arm_linux_configure                 \
4481              --arm_linux_config_file="$armcc_conf" \
4482              --configure_sysroot="$sysroot"        \
4483              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4484              die "Error creating armcc configuration file."
4485         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4486         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4487         as_default="${cross_prefix}gcc"
4488         _depflags='-MMD'
4489         _cflags_speed='-O3'
4490         _cflags_size='-Os'
4491     elif $_cc -v 2>&1 | grep -q clang && ! $_cc -? > /dev/null 2>&1; then
4492         _type=clang
4493         _ident=$($_cc --version 2>/dev/null | head -n1)
4494         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4495         _cflags_speed='-O3'
4496         _cflags_size='-Oz'
4497     elif $_cc -V 2>&1 | grep -q Sun; then
4498         _type=suncc
4499         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4500         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4501         _DEPFLAGS='-xM1 -xc99'
4502         _ldflags='-std=c99'
4503         _cflags_speed='-O5'
4504         _cflags_size='-O5 -xspace'
4505         _flags_filter=suncc_flags
4506     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4507         _type=pathscale
4508         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4509         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4510         _cflags_speed='-O2'
4511         _cflags_size='-Os'
4512         _flags_filter='filter_out -Wdisabled-optimization'
4513     elif $_cc -v 2>&1 | grep -q Open64; then
4514         _type=open64
4515         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4516         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4517         _cflags_speed='-O2'
4518         _cflags_size='-Os'
4519         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4520     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4521         _type=armasm
4522         _ident=$($_cc | head -n1)
4523         # 4509: "This form of conditional instruction is deprecated"
4524         _flags="-nologo -ignore 4509"
4525         _flags_filter=armasm_flags
4526     elif $_cc 2>&1 | grep -q Intel; then
4527         _type=icl
4528         _ident=$($_cc 2>&1 | head -n1)
4529         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4530         # Not only is O3 broken on 13.x+ but it is slower on all previous
4531         # versions (tested) as well.
4532         _cflags_speed="-O2"
4533         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4534         if $_cc 2>&1 | grep -q Linker; then
4535             _ld_o='-out:$@'
4536         else
4537             _ld_o='-Fe$@'
4538         fi
4539         _cc_o='-Fo$@'
4540         _cc_e='-P'
4541         _flags_filter=icl_flags
4542         _ld_lib='lib%.a'
4543         _ld_path='-libpath:'
4544         # -Qdiag-error to make icl error when seeing certain unknown arguments
4545         _flags='-nologo -Qdiag-error:4044,10157'
4546         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4547         # with MSVC which enables it by default.
4548         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4549         disable stripping
4550     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4551         # lld can emulate multiple different linkers; in ms link.exe mode,
4552         # the -? parameter gives the help output which contains an identifyable
4553         # string, while it gives an error in other modes.
4554         _type=lld-link
4555         # The link.exe mode doesn't have a switch for getting the version,
4556         # but we can force it back to gnu mode and get the version from there.
4557         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4558         _ld_o='-out:$@'
4559         _flags_filter=msvc_flags
4560         _ld_lib='lib%.a'
4561         _ld_path='-libpath:'
4562     elif $_cc -nologo- 2>&1 | grep -q Microsoft || { $_cc -v 2>&1 | grep -q clang && $_cc -? > /dev/null 2>&1; }; then
4563         _type=msvc
4564         _ident=$($_cc 2>&1 | head -n1 | tr -d '\r')
4565         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4566         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4567         _cflags_speed="-O2"
4568         _cflags_size="-O1"
4569         _cflags_noopt="-O1"
4570         if $_cc -nologo- 2>&1 | grep -q Linker; then
4571             _ld_o='-out:$@'
4572         else
4573             _ld_o='-Fe$@'
4574         fi
4575         _cc_o='-Fo$@'
4576         _cc_e='-P -Fi$@'
4577         _flags_filter=msvc_flags
4578         _ld_lib='lib%.a'
4579         _ld_path='-libpath:'
4580         _flags='-nologo'
4581         disable stripping
4582     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4583         _type=cparser
4584         _ident=$($_cc --version | head -n1)
4585         _depflags='-MMD'
4586         _cflags_speed='-O4'
4587         _cflags_size='-O2'
4588         _flags_filter=cparser_flags
4589     fi
4590
4591     eval ${pfx}_type=\$_type
4592     eval ${pfx}_ident=\$_ident
4593 }
4594
4595 set_ccvars(){
4596     eval ${1}_C=\${_cc_c-\${${1}_C}}
4597     eval ${1}_E=\${_cc_e-\${${1}_E}}
4598     eval ${1}_O=\${_cc_o-\${${1}_O}}
4599
4600     if [ -n "$_depflags" ]; then
4601         eval ${1}_DEPFLAGS=\$_depflags
4602     else
4603         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4604         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4605         eval DEP${1}FLAGS=\$_flags
4606     fi
4607 }
4608
4609 probe_cc cc "$cc" "true"
4610 cflags_filter=$_flags_filter
4611 cflags_speed=$_cflags_speed
4612 cflags_size=$_cflags_size
4613 cflags_noopt=$_cflags_noopt
4614 add_cflags $_flags $_cflags
4615 cc_ldflags=$_ldflags
4616 set_ccvars CC
4617 set_ccvars CXX
4618
4619 probe_cc hostcc "$host_cc"
4620 host_cflags_filter=$_flags_filter
4621 host_cflags_speed=$_cflags_speed
4622 add_host_cflags  $_flags $_cflags
4623 set_ccvars HOSTCC
4624
4625 test -n "$cc_type" && enable $cc_type ||
4626     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4627
4628 : ${as_default:=$cc}
4629 : ${objcc_default:=$cc}
4630 : ${dep_cc_default:=$cc}
4631 : ${ld_default:=$cc}
4632 : ${host_ld_default:=$host_cc}
4633 set_default ar as objcc dep_cc ld ln_s host_ld windres
4634
4635 probe_cc as "$as"
4636 asflags_filter=$_flags_filter
4637 add_asflags $_flags $_cflags
4638 set_ccvars AS
4639
4640 probe_cc objcc "$objcc"
4641 objcflags_filter=$_flags_filter
4642 add_objcflags $_flags $_cflags
4643 set_ccvars OBJC
4644
4645 probe_cc ld "$ld"
4646 ldflags_filter=$_flags_filter
4647 add_ldflags $_flags $_ldflags
4648 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4649 LD_O=${_ld_o-$LD_O}
4650 LD_LIB=${_ld_lib-$LD_LIB}
4651 LD_PATH=${_ld_path-$LD_PATH}
4652
4653 probe_cc hostld "$host_ld"
4654 host_ldflags_filter=$_flags_filter
4655 add_host_ldflags $_flags $_ldflags
4656 HOSTLD_O=${_ld_o-$HOSTLD_O}
4657
4658 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4659     probe_cc depcc "$dep_cc"
4660     CCDEP=${_DEPCMD:-$DEPCMD}
4661     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4662     DEPCCFLAGS=$_flags
4663 fi
4664
4665 if $ar 2>&1 | grep -q Microsoft; then
4666     arflags="-nologo"
4667     ar_o='-out:$@'
4668 elif $ar 2>&1 | grep -q "\[D\] "; then
4669     arflags="rcD"
4670     ar_o='$@'
4671 else
4672     arflags="rc"
4673     ar_o='$@'
4674 fi
4675
4676 add_cflags $extra_cflags
4677 add_cxxflags $extra_cxxflags
4678 add_objcflags $extra_objcflags
4679 add_asflags $extra_cflags
4680
4681 if test -n "$sysroot"; then
4682     case "$cc_type" in
4683         gcc|llvm_gcc|clang)
4684             add_cppflags --sysroot="$sysroot"
4685             add_ldflags --sysroot="$sysroot"
4686         ;;
4687     esac
4688 fi
4689
4690 if test "$cpu" = host; then
4691     enabled cross_compile &&
4692         die "--cpu=host makes no sense when cross-compiling."
4693
4694     case "$cc_type" in
4695         gcc|llvm_gcc)
4696             check_native(){
4697                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4698                 sed -n "/cc1.*$1=/{
4699                             s/.*$1=\\([^ ]*\\).*/\\1/
4700                             p
4701                             q
4702                         }" $TMPE
4703             }
4704             cpu=$(check_native -march || check_native -mcpu)
4705         ;;
4706         clang)
4707             check_native(){
4708                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4709                 sed -n "/cc1.*-target-cpu /{
4710                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4711                             p
4712                             q
4713                         }" $TMPE
4714             }
4715             cpu=$(check_native -march)
4716         ;;
4717     esac
4718
4719     test "${cpu:-host}" = host &&
4720         die "--cpu=host not supported with compiler $cc"
4721 fi
4722
4723 # Deal with common $arch aliases
4724 case "$arch" in
4725     aarch64|arm64)
4726         arch="aarch64"
4727     ;;
4728     arm*|iPad*|iPhone*)
4729         arch="arm"
4730     ;;
4731     mips*|IP*)
4732         case "$arch" in
4733         *el)
4734             add_cppflags -EL
4735             add_ldflags -EL
4736         ;;
4737         *eb)
4738             add_cppflags -EB
4739             add_ldflags -EB
4740         ;;
4741         esac
4742         arch="mips"
4743     ;;
4744     parisc*|hppa*)
4745         arch="parisc"
4746     ;;
4747     "Power Macintosh"|ppc*|powerpc*)
4748         arch="ppc"
4749     ;;
4750     s390|s390x)
4751         arch="s390"
4752     ;;
4753     sh4|sh)
4754         arch="sh4"
4755     ;;
4756     sun4*|sparc*)
4757         arch="sparc"
4758     ;;
4759     tilegx|tile-gx)
4760         arch="tilegx"
4761     ;;
4762     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4763         arch="x86"
4764     ;;
4765 esac
4766
4767 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4768 enable $arch
4769
4770 # Add processor-specific flags
4771 if enabled aarch64; then
4772
4773     case $cpu in
4774         armv*)
4775             cpuflags="-march=$cpu"
4776         ;;
4777         *)
4778             cpuflags="-mcpu=$cpu"
4779         ;;
4780     esac
4781
4782 elif enabled alpha; then
4783
4784     cpuflags="-mcpu=$cpu"
4785
4786 elif enabled arm; then
4787
4788     check_arm_arch() {
4789         test_cpp_condition stddef.h \
4790             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4791             $cpuflags
4792     }
4793
4794     probe_arm_arch() {
4795         if   check_arm_arch 4;        then echo armv4
4796         elif check_arm_arch 4T;       then echo armv4t
4797         elif check_arm_arch 5;        then echo armv5
4798         elif check_arm_arch 5E;       then echo armv5e
4799         elif check_arm_arch 5T;       then echo armv5t
4800         elif check_arm_arch 5TE;      then echo armv5te
4801         elif check_arm_arch 5TEJ;     then echo armv5te
4802         elif check_arm_arch 6;        then echo armv6
4803         elif check_arm_arch 6J;       then echo armv6j
4804         elif check_arm_arch 6K;       then echo armv6k
4805         elif check_arm_arch 6Z;       then echo armv6z
4806         elif check_arm_arch 6KZ;      then echo armv6zk
4807         elif check_arm_arch 6ZK;      then echo armv6zk
4808         elif check_arm_arch 6T2;      then echo armv6t2
4809         elif check_arm_arch 7;        then echo armv7
4810         elif check_arm_arch 7A  7_A;  then echo armv7-a
4811         elif check_arm_arch 7S;       then echo armv7-a
4812         elif check_arm_arch 7R  7_R;  then echo armv7-r
4813         elif check_arm_arch 7M  7_M;  then echo armv7-m
4814         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4815         elif check_arm_arch 8A  8_A;  then echo armv8-a
4816         fi
4817     }
4818
4819     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4820
4821     case $cpu in
4822         armv*)
4823             cpuflags="-march=$cpu"
4824             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4825         ;;
4826         *)
4827             cpuflags="-mcpu=$cpu"
4828             case $cpu in
4829                 cortex-a*)                               subarch=armv7a  ;;
4830                 cortex-r*)                               subarch=armv7r  ;;
4831                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4832                 arm11*)                                  subarch=armv6   ;;
4833                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4834                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4835                 *)                             subarch=$(probe_arm_arch) ;;
4836             esac
4837         ;;
4838     esac
4839
4840     case "$subarch" in
4841         armv5t*)    enable fast_clz                ;;
4842         armv[6-8]*)
4843             enable fast_clz
4844             disabled fast_unaligned || enable fast_unaligned
4845             ;;
4846     esac
4847
4848 elif enabled avr32; then
4849
4850     case $cpu in
4851         ap7[02]0[0-2])
4852             subarch="avr32_ap"
4853             cpuflags="-mpart=$cpu"
4854         ;;
4855         ap)
4856             subarch="avr32_ap"
4857             cpuflags="-march=$cpu"
4858         ;;
4859         uc3[ab]*)
4860             subarch="avr32_uc"
4861             cpuflags="-mcpu=$cpu"
4862         ;;
4863         uc)
4864             subarch="avr32_uc"
4865             cpuflags="-march=$cpu"
4866         ;;
4867     esac
4868
4869 elif enabled bfin; then
4870
4871     cpuflags="-mcpu=$cpu"
4872
4873 elif enabled mips; then
4874
4875     cpuflags="-march=$cpu"
4876
4877     if [ "$cpu" != "generic" ]; then
4878         disable mips32r2
4879         disable mips32r5
4880         disable mips64r2
4881         disable mips32r6
4882         disable mips64r6
4883         disable loongson2
4884         disable loongson3
4885
4886         case $cpu in
4887             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4888                 enable mips32r2
4889                 disable msa
4890             ;;
4891             p5600|i6400|p6600)
4892                 disable mipsdsp
4893                 disable mipsdspr2
4894             ;;
4895             loongson*)
4896                 enable loongson2
4897                 enable loongson3
4898                 enable local_aligned
4899                 enable simd_align_16
4900                 enable fast_64bit
4901                 enable fast_clz
4902                 enable fast_cmov
4903                 enable fast_unaligned
4904                 disable aligned_stack
4905                 disable mipsdsp
4906                 disable mipsdspr2
4907                 # When gcc version less than 5.3.0, add -fno-expensive-optimizations flag.
4908                 if [ $cc == gcc ]; then
4909                     gcc_version=$(gcc -dumpversion)
4910                     if [ "$(echo "$gcc_version 5.3.0" | tr " " "\n" | sort -rV | head -n 1)" == "$gcc_version" ]; then
4911                         expensive_optimization_flag=""
4912                     else
4913                         expensive_optimization_flag="-fno-expensive-optimizations"
4914                     fi
4915                 fi
4916                 case $cpu in
4917                     loongson3*)
4918                         cpuflags="-march=loongson3a -mhard-float $expensive_optimization_flag"
4919                     ;;
4920                     loongson2e)
4921                         cpuflags="-march=loongson2e -mhard-float $expensive_optimization_flag"
4922                     ;;
4923                     loongson2f)
4924                         cpuflags="-march=loongson2f -mhard-float $expensive_optimization_flag"
4925                     ;;
4926                 esac
4927             ;;
4928             *)
4929                 # Unknown CPU. Disable everything.
4930                 warn "unknown CPU. Disabling all MIPS optimizations."
4931                 disable mipsfpu
4932                 disable mipsdsp
4933                 disable mipsdspr2
4934                 disable msa
4935                 disable mmi
4936             ;;
4937         esac
4938
4939         case $cpu in
4940             24kc)
4941                 disable mipsfpu
4942                 disable mipsdsp
4943                 disable mipsdspr2
4944             ;;
4945             24kf*)
4946                 disable mipsdsp
4947                 disable mipsdspr2
4948             ;;
4949             24kec|34kc|1004kc)
4950                 disable mipsfpu
4951                 disable mipsdspr2
4952             ;;
4953             24kef*|34kf*|1004kf*)
4954                 disable mipsdspr2
4955             ;;
4956             74kc)
4957                 disable mipsfpu
4958             ;;
4959             p5600)
4960                 enable mips32r5
4961                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4962             ;;
4963             i6400)
4964                 enable mips64r6
4965                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4966             ;;
4967             p6600)
4968                 enable mips64r6
4969                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4970             ;;
4971         esac
4972     else
4973         # We do not disable anything. Is up to the user to disable the unwanted features.
4974         warn 'generic cpu selected'
4975     fi
4976
4977 elif enabled ppc; then
4978
4979     disable ldbrx
4980
4981     case $(tolower $cpu) in
4982         601|ppc601|powerpc601)
4983             cpuflags="-mcpu=601"
4984             disable altivec
4985         ;;
4986         603*|ppc603*|powerpc603*)
4987             cpuflags="-mcpu=603"
4988             disable altivec
4989         ;;
4990         604*|ppc604*|powerpc604*)
4991             cpuflags="-mcpu=604"
4992             disable altivec
4993         ;;
4994         g3|75*|ppc75*|powerpc75*)
4995             cpuflags="-mcpu=750"
4996             disable altivec
4997         ;;
4998         g4|745*|ppc745*|powerpc745*)
4999             cpuflags="-mcpu=7450"
5000             disable vsx
5001         ;;
5002         74*|ppc74*|powerpc74*)
5003             cpuflags="-mcpu=7400"
5004             disable vsx
5005         ;;
5006         g5|970|ppc970|powerpc970)
5007             cpuflags="-mcpu=970"
5008             disable vsx
5009         ;;
5010         power[3-6]*)
5011             cpuflags="-mcpu=$cpu"
5012             disable vsx
5013         ;;
5014         power[7-8]*)
5015             cpuflags="-mcpu=$cpu"
5016         ;;
5017         cell)
5018             cpuflags="-mcpu=cell"
5019             enable ldbrx
5020             disable vsx
5021         ;;
5022         e500mc)
5023             cpuflags="-mcpu=e500mc"
5024             disable altivec
5025         ;;
5026         e500v2)
5027             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
5028             disable altivec
5029             disable dcbzl
5030         ;;
5031         e500)
5032             cpuflags="-mcpu=8540 -mhard-float"
5033             disable altivec
5034             disable dcbzl
5035         ;;
5036     esac
5037
5038 elif enabled sparc; then
5039
5040     case $cpu in
5041         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
5042             cpuflags="-mcpu=$cpu"
5043         ;;
5044         ultrasparc*|niagara[234])
5045             cpuflags="-mcpu=$cpu"
5046         ;;
5047     esac
5048
5049 elif enabled x86; then
5050
5051     case $cpu in
5052         i[345]86|pentium)
5053             cpuflags="-march=$cpu"
5054             disable i686
5055             disable mmx
5056         ;;
5057         # targets that do NOT support nopl and conditional mov (cmov)
5058         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
5059             cpuflags="-march=$cpu"
5060             disable i686
5061         ;;
5062         # targets that do support nopl and conditional mov (cmov)
5063         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
5064         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
5065         |amdfam10|barcelona|b[dt]ver*|znver*)
5066             cpuflags="-march=$cpu"
5067             enable i686
5068             enable fast_cmov
5069         ;;
5070         # targets that do support conditional mov but on which it's slow
5071         pentium4|pentium4m|prescott|nocona)
5072             cpuflags="-march=$cpu"
5073             enable i686
5074             disable fast_cmov
5075         ;;
5076     esac
5077
5078 fi
5079
5080 if [ "$cpu" != generic ]; then
5081     add_cflags  $cpuflags
5082     add_asflags $cpuflags
5083     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
5084 fi
5085
5086 # compiler sanity check
5087 test_exec <<EOF
5088 int main(void){ return 0; }
5089 EOF
5090 if test "$?" != 0; then
5091     echo "$cc is unable to create an executable file."
5092     if test -z "$cross_prefix" && ! enabled cross_compile ; then
5093         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
5094         echo "Only do this if you know what cross compiling means."
5095     fi
5096     die "C compiler test failed."
5097 fi
5098
5099 add_cppflags -D_ISOC99_SOURCE
5100 add_cxxflags -D__STDC_CONSTANT_MACROS
5101 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
5102
5103 # some compilers silently accept -std=c11, so we also need to check that the
5104 # version macro is defined properly
5105 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
5106     add_cflags -std=c11 ||
5107     check_cflags -std=c99
5108
5109 check_cppflags -D_FILE_OFFSET_BITS=64
5110 check_cppflags -D_LARGEFILE_SOURCE
5111
5112 add_host_cppflags -D_ISOC99_SOURCE
5113 check_host_cflags -std=c99
5114 check_host_cflags -Wall
5115 check_host_cflags $host_cflags_speed
5116
5117 check_64bit(){
5118     arch32=$1
5119     arch64=$2
5120     expr=${3:-'sizeof(void *) > 4'}
5121     test_code cc "" "int test[2*($expr) - 1]" &&
5122         subarch=$arch64 || subarch=$arch32
5123     enable $subarch
5124 }
5125
5126 case "$arch" in
5127     aarch64|alpha|ia64)
5128         enabled shared && enable_weak pic
5129     ;;
5130     mips)
5131         check_64bit mips mips64 '_MIPS_SIM > 1'
5132         enabled shared && enable_weak pic
5133     ;;
5134     parisc)
5135         check_64bit parisc parisc64
5136         enabled shared && enable_weak pic
5137     ;;
5138     ppc)
5139         check_64bit ppc ppc64
5140         enabled shared && enable_weak pic
5141     ;;
5142     s390)
5143         check_64bit s390 s390x
5144         enabled shared && enable_weak pic
5145     ;;
5146     sparc)
5147         check_64bit sparc sparc64
5148         enabled shared && enable_weak pic
5149     ;;
5150     x86)
5151         check_64bit x86_32 x86_64
5152         # Treat x32 as x64 for now. Note it also needs pic if shared
5153         test "$subarch" = "x86_32" && test_cpp_condition stddef.h 'defined(__x86_64__)' &&
5154             subarch=x86_64 && enable x86_64 && disable x86_32
5155         if enabled x86_64; then
5156             enabled shared && enable_weak pic
5157             objformat=elf64
5158         fi
5159     ;;
5160 esac
5161
5162 # OS specific
5163 case $target_os in
5164     aix)
5165         SHFLAGS=-shared
5166         add_cppflags '-I\$(SRC_PATH)/compat/aix'
5167         enabled shared && add_ldflags -Wl,-brtl
5168         arflags='-Xany -r -c'
5169         striptype=""
5170         ;;
5171     android)
5172         disable symver
5173         enable section_data_rel_ro
5174         add_cflags -fPIE
5175         add_ldexeflags -fPIE -pie
5176         SLIB_INSTALL_NAME='$(SLIBNAME)'
5177         SLIB_INSTALL_LINKS=
5178         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
5179         ;;
5180     haiku)
5181         prefix_default="/boot/common"
5182         network_extralibs="-lnetwork"
5183         host_extralibs=
5184         ;;
5185     sunos)
5186         SHFLAGS='-shared -Wl,-h,$$(@F)'
5187         enabled x86 && append SHFLAGS -mimpure-text
5188         network_extralibs="-lsocket -lnsl"
5189         add_cppflags -D__EXTENSIONS__
5190         # When using suncc to build, the Solaris linker will mark
5191         # an executable with each instruction set encountered by
5192         # the Solaris assembler.  As our libraries contain their own
5193         # guards for processor-specific code, instead suppress
5194         # generation of the HWCAPS ELF section on Solaris x86 only.
5195         enabled_all suncc x86 &&
5196             echo "hwcap_1 = OVERRIDE;" > mapfile &&
5197             add_ldflags -Wl,-M,mapfile
5198         nm_default='nm -P -g'
5199         striptype=""
5200         version_script='-M'
5201         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
5202         ;;
5203     netbsd)
5204         disable symver
5205         oss_indev_extralibs="-lossaudio"
5206         oss_outdev_extralibs="-lossaudio"
5207         enabled gcc || check_ldflags -Wl,-zmuldefs
5208         ;;
5209     openbsd|bitrig)
5210         disable symver
5211         striptype=""
5212         SHFLAGS='-shared'
5213         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
5214         SLIB_INSTALL_LINKS=
5215         oss_indev_extralibs="-lossaudio"
5216         oss_outdev_extralibs="-lossaudio"
5217         ;;
5218     dragonfly)
5219         disable symver
5220         ;;
5221     freebsd)
5222         ;;
5223     bsd/os)
5224         add_extralibs -lpoll -lgnugetopt
5225         strip="strip -d"
5226         ;;
5227     darwin)
5228         enabled ppc && add_asflags -force_cpusubtype_ALL
5229         install_name_dir_default='$(SHLIBDIR)'
5230         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
5231         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
5232         strip="${strip} -x"
5233         add_ldflags -Wl,-dynamic,-search_paths_first
5234         check_cflags -Werror=partial-availability
5235         SLIBSUF=".dylib"
5236         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
5237         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
5238         enabled x86_64 && objformat="macho64" || objformat="macho32"
5239         enabled_any pic shared x86_64 ||
5240             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
5241         check_headers dispatch/dispatch.h &&
5242             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
5243         if test -n "$sysroot"; then
5244             is_in -isysroot $cc $CPPFLAGS $CFLAGS || check_cppflags -isysroot $sysroot
5245             is_in -isysroot $ld $LDFLAGS          || check_ldflags  -isysroot $sysroot
5246         fi
5247         version_script='-exported_symbols_list'
5248         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
5249         ;;
5250     msys*)
5251         die "Native MSYS builds are discouraged, please use the MINGW environment."
5252         ;;
5253     mingw32*|mingw64*)
5254         target_os=mingw32
5255         LIBTARGET=i386
5256         if enabled x86_64; then
5257             LIBTARGET="i386:x86-64"
5258         elif enabled arm; then
5259             LIBTARGET="arm"
5260         elif enabled aarch64; then
5261             LIBTARGET="arm64"
5262         fi
5263         if enabled shared; then
5264             # Cannot build both shared and static libs when using dllimport.
5265             disable static
5266         fi
5267         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5268         enabled x86_32 && check_ldflags -Wl,--large-address-aware
5269         shlibdir_default="$bindir_default"
5270         SLIBPREF=""
5271         SLIBSUF=".dll"
5272         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5273         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5274         if test_cmd lib.exe -list; then
5275             SLIB_EXTRA_CMD=-'lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5276             if enabled x86_64; then
5277                 LIBTARGET=x64
5278             fi
5279         else
5280             SLIB_EXTRA_CMD=-'$(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
5281         fi
5282         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5283         SLIB_INSTALL_LINKS=
5284         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5285         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5286         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" AR="$(AR_CMD)" NM="$(NM_CMD)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5287         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--disable-auto-image-base $$(@:$(SLIBSUF)=.def)'
5288         enabled x86_64 && objformat="win64" || objformat="win32"
5289         dlltool="${cross_prefix}dlltool"
5290         ranlib=:
5291         enable dos_paths
5292         check_ldflags -Wl,--nxcompat,--dynamicbase
5293         # Lets work around some stupidity in binutils.
5294         # ld will strip relocations from executables even though we need them
5295         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
5296         # however ld then forgets what the entry point should be (oops) so we
5297         # have to manually (re)set it.
5298         if enabled x86_32; then
5299             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
5300         elif enabled x86_64; then
5301             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
5302             check_ldflags -Wl,--high-entropy-va # binutils 2.25
5303             # Set image base >4GB for extra entropy with HEASLR
5304             add_ldexeflags -Wl,--image-base,0x140000000
5305             append SHFLAGS -Wl,--image-base,0x180000000
5306         fi
5307         ;;
5308     win32|win64)
5309         disable symver
5310         if enabled shared; then
5311             # Link to the import library instead of the normal static library
5312             # for shared libs.
5313             LD_LIB='%.lib'
5314             # Cannot build both shared and static libs with MSVC or icl.
5315             disable static
5316         fi
5317         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
5318         shlibdir_default="$bindir_default"
5319         SLIBPREF=""
5320         SLIBSUF=".dll"
5321         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5322         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5323         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5324         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5325         SLIB_INSTALL_LINKS=
5326         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5327         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5328         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5329         enabled x86_64 && objformat="win64" || objformat="win32"
5330         ranlib=:
5331         enable dos_paths
5332         ;;
5333     cygwin*)
5334         target_os=cygwin
5335         shlibdir_default="$bindir_default"
5336         SLIBPREF="cyg"
5337         SLIBSUF=".dll"
5338         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5339         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5340         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5341         SLIB_INSTALL_LINKS=
5342         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
5343         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
5344         enabled x86_64 && objformat="win64" || objformat="win32"
5345         enable dos_paths
5346         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5347         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5348         ;;
5349     *-dos|freedos|opendos)
5350         network_extralibs="-lsocket"
5351         objformat="coff"
5352         enable dos_paths
5353         ;;
5354     linux)
5355         enable section_data_rel_ro
5356         enabled_any arm aarch64 && enable_weak linux_perf
5357         ;;
5358     irix*)
5359         target_os=irix
5360         ranlib="echo ignoring ranlib"
5361         ;;
5362     os/2*)
5363         strip="lxlite -CS"
5364         striptype=""
5365         objformat="aout"
5366         add_cppflags -D_GNU_SOURCE
5367         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
5368         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
5369         LIBSUF="_s.a"
5370         SLIBPREF=""
5371         SLIBSUF=".dll"
5372         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5373         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
5374         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
5375             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
5376             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
5377             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
5378             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
5379         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
5380             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
5381         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5382         SLIB_INSTALL_LINKS=
5383         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
5384         enable dos_paths
5385         enable_weak os2threads
5386         ;;
5387     gnu/kfreebsd)
5388         add_cppflags -D_BSD_SOURCE
5389         ;;
5390     gnu)
5391         ;;
5392     qnx)
5393         add_cppflags -D_QNX_SOURCE
5394         network_extralibs="-lsocket"
5395         ;;
5396     symbian)
5397         SLIBSUF=".dll"
5398         enable dos_paths
5399         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
5400         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
5401         add_ldflags -Wl,--target1-abs,--no-undefined \
5402                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
5403                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
5404         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
5405                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
5406                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
5407         ;;
5408     minix)
5409         ;;
5410     none)
5411         ;;
5412     *)
5413         die "Unknown OS '$target_os'."
5414         ;;
5415 esac
5416
5417 # test if creating links works
5418 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5419 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5420 mkdir "$link_dest"
5421 $ln_s "$link_dest" "$link_name"
5422 touch "$link_dest/test_file"
5423 if [ "$source_path" != "." ] && [ "$source_path" != "src" ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5424     # create link to source path
5425     [ -e src ] && rm src
5426     $ln_s "$source_path" src
5427     source_link=src
5428 else
5429     # creating directory links doesn't work
5430     # fall back to using the full source path
5431     source_link="$source_path"
5432 fi
5433 # cleanup
5434 rm -r "$link_dest"
5435 rm -r "$link_name"
5436
5437 # determine libc flavour
5438
5439 probe_libc(){
5440     pfx=$1
5441     pfx_no_=${pfx%_}
5442     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5443     if test_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5444         eval ${pfx}libc_type=uclibc
5445         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5446     elif test_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5447         eval ${pfx}libc_type=glibc
5448         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5449     # MinGW headers can be installed on Cygwin, so check for newlib first.
5450     elif test_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5451         eval ${pfx}libc_type=newlib
5452         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
5453     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5454     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5455         eval ${pfx}libc_type=mingw64
5456         if test_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5457             add_compat msvcrt/snprintf.o
5458             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5459         fi
5460         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5461         eval test \$${pfx_no_}cc_type = "gcc" &&
5462             add_${pfx}cppflags -D__printf__=__gnu_printf__
5463         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5464             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5465         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5466     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5467          test_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5468         eval ${pfx}libc_type=mingw32
5469         test_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5470             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5471             die "ERROR: MinGW32 runtime version must be >= 3.15."
5472         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5473         test_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
5474             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5475         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5476             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5477         eval test \$${pfx_no_}cc_type = "gcc" &&
5478             add_${pfx}cppflags -D__printf__=__gnu_printf__
5479         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5480     elif test_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5481         eval ${pfx}libc_type=msvcrt
5482         if test_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5483             if [ "$pfx" = host_ ]; then
5484                 add_host_cppflags -Dsnprintf=_snprintf
5485             else
5486                 add_compat strtod.o strtod=avpriv_strtod
5487                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5488                                              _snprintf=avpriv_snprintf  \
5489                                              vsnprintf=avpriv_vsnprintf
5490             fi
5491         fi
5492         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5493         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5494         # 0x601 by default unless something else is set by the user.
5495         # This can easily lead to us detecting functions only present
5496         # in such new versions and producing binaries requiring windows 7.0.
5497         # Therefore explicitly set the default to Vista unless the user has
5498         # set something else on the command line.
5499         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5500         # family. For these cases, configure is free to use any functions
5501         # found in the SDK headers by default. (Alternatively, we could force
5502         # _WIN32_WINNT to 0x0602 in that case.)
5503         test_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5504             { test_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0600; }
5505 #ifdef WINAPI_FAMILY
5506 #include <winapifamily.h>
5507 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5508 #error not desktop
5509 #endif
5510 #endif
5511 EOF
5512         if [ "$pfx" = "" ]; then
5513             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5514             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5515         fi
5516     elif test_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5517         eval ${pfx}libc_type=klibc
5518     elif test_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5519         eval ${pfx}libc_type=bionic
5520     elif test_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5521         eval ${pfx}libc_type=solaris
5522         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5523     elif test_${pfx}cpp_condition sys/version.h "defined __DJGPP__"; then
5524         eval ${pfx}libc_type=djgpp
5525         add_cppflags -U__STRICT_ANSI__
5526         add_cflags "-include $source_path/compat/djgpp/math.h"
5527         add_compat djgpp/math.o
5528     fi
5529     test_${pfx}cc <<EOF
5530 #include <time.h>
5531 void *v = localtime_r;
5532 EOF
5533 test "$?" != 0 && test_${pfx}cc -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 <<EOF && add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5534 #include <time.h>
5535 void *v = localtime_r;
5536 EOF
5537
5538     eval test -n "\${${pfx}libc_type}" && enable ${pfx}libc_${libc_type}
5539 }
5540
5541 probe_libc
5542 probe_libc host_
5543
5544 # hacks for compiler/libc/os combinations
5545
5546 case $libc_type in
5547     bionic)
5548         add_compat strtod.o strtod=avpriv_strtod
5549         ;;
5550 esac
5551
5552 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5553     add_cppflags '-I\$(SRC_PATH)/compat/float'
5554
5555 test_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5556
5557 set_default libdir
5558 : ${shlibdir_default:="$libdir"}
5559 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5560
5561 set_default $PATHS_LIST
5562 set_default nm
5563
5564 disabled optimizations || enabled ossfuzz || check_cflags -fomit-frame-pointer
5565
5566 enable_weak_pic() {
5567     disabled pic && return
5568     enable pic
5569     add_cppflags -DPIC
5570     case "$target_os" in
5571     mingw*|cygwin*|win*)
5572         ;;
5573     *)
5574         add_cflags -fPIC
5575         add_asflags -fPIC
5576         ;;
5577     esac
5578 }
5579
5580 enabled pic && enable_weak_pic
5581
5582 test_cc <<EOF || die "Symbol mangling check failed."
5583 int ff_extern;
5584 EOF
5585 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5586 extern_prefix=${sym%%ff_extern*}
5587
5588 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
5589
5590 for restrict_keyword in restrict __restrict__ __restrict ""; do
5591     test_code cc "" "char * $restrict_keyword p" && break
5592 done
5593
5594 check_cc pragma_deprecated "" '_Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"")'
5595
5596 # The global variable ensures the bits appear unchanged in the object file.
5597 test_cc <<EOF || die "endian test failed"
5598 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5599 EOF
5600 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5601
5602 check_cc const_nan math.h "struct { double d; } static const bar[] = { { NAN } }"
5603
5604 if ! enabled ppc64 || enabled bigendian; then
5605     disable vsx
5606 fi
5607
5608 check_gas() {
5609     log "check_gas using '$as' as AS"
5610     # :vararg is used on aarch64, arm and ppc altivec
5611     check_as vararg "
5612 .macro m n, y:vararg=0
5613 \n: .int \y
5614 .endm
5615 m x" || return 1
5616     # .altmacro is only used in arm asm
5617     ! enabled arm || check_as gnu_as ".altmacro"
5618 }
5619
5620 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5621     nogas=:
5622     enabled_any arm aarch64 && nogas=die
5623     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5624     as_noop=-v
5625
5626     case $as_type in
5627         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5628         gcc)  gaspp_as_type=gas ;;
5629         *)    gaspp_as_type=$as_type ;;
5630     esac
5631
5632     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5633
5634     test "${as#*gas-preprocessor.pl}" != "$as" ||
5635     test_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5636         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5637
5638     if ! check_gas ; then
5639         as=${gas:=$as}
5640         check_gas || \
5641             $nogas "GNU assembler not found, install/update gas-preprocessor"
5642     fi
5643
5644     check_as as_func ".func test
5645                       .endfunc"
5646 fi
5647
5648 check_inline_asm inline_asm_labels '"1:\n"'
5649
5650 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5651
5652 if enabled aarch64; then
5653     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5654     # internal assembler in clang 3.3 does not support this instruction
5655     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5656     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5657
5658     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5659
5660 elif enabled alpha; then
5661
5662     check_cflags -mieee
5663
5664 elif enabled arm; then
5665
5666     enabled msvc && check_cpp_condition thumb stddef.h "defined _M_ARMT"
5667     test_cpp_condition stddef.h "defined __thumb__" && test_cc <<EOF && enable_weak thumb
5668 float func(float a, float b){ return a+b; }
5669 EOF
5670     enabled thumb && check_cflags -mthumb || check_cflags -marm
5671
5672     if check_cpp_condition vfp_args stddef.h "defined __ARM_PCS_VFP"; then
5673         :
5674     elif check_cpp_condition vfp_args stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5675         :
5676     elif ! test_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5677         case "${cross_prefix:-$cc}" in
5678             *hardfloat*) enable vfp_args; fpabi=vfp ;;
5679             *) check_ld "cc" vfp_args <<EOF && fpabi=vfp || fpabi=soft ;;
5680 __asm__ (".eabi_attribute 28, 1");
5681 int main(void) { return 0; }
5682 EOF
5683         esac
5684         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5685     fi
5686
5687     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5688     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5689     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5690     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5691     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5692     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5693     enabled setend  && check_insn setend  'setend be'
5694
5695     [ $target_os = linux ] || [ $target_os = android ] ||
5696         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5697             $ARCH_EXT_LIST_ARM
5698
5699     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5700
5701     check_as as_arch_directive ".arch armv7-a"
5702     check_as as_dn_directive   "ra .dn d0.i16"
5703     check_as as_fpu_directive  ".fpu neon"
5704
5705     # llvm's integrated assembler supports .object_arch from llvm 3.5
5706     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
5707         check_as as_object_arch ".object_arch armv4"
5708
5709     # MS armasm fails to assemble our PIC constructs
5710     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5711
5712 elif enabled mips; then
5713
5714     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5715     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5716     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5717
5718     # Enable minimum ISA based on selected options
5719     if enabled mips64; then
5720         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5721         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5722         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5723     else
5724         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5725         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5726         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5727         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5728     fi
5729
5730     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5731     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5732     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_headers msa.h || disable msa
5733     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5734     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5735
5736     if enabled bigendian && enabled msa; then
5737         disable msa
5738     fi
5739
5740 elif enabled parisc; then
5741
5742     if enabled gcc; then
5743         case $($cc -dumpversion) in
5744             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5745         esac
5746     fi
5747
5748 elif enabled ppc; then
5749
5750     enable local_aligned
5751
5752     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5753     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5754     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5755     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5756
5757     if enabled altivec; then
5758         check_cflags -maltivec -mabi=altivec
5759
5760         # check if our compiler supports Motorola AltiVec C API
5761         check_cc altivec altivec.h "vector signed int v1 = (vector signed int) { 0 };
5762                                     vector signed int v2 = (vector signed int) { 1 };
5763                                     v1 = vec_add(v1, v2);"
5764
5765         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5766     fi
5767
5768     if enabled vsx; then
5769         check_cflags -mvsx &&
5770         check_cc vsx altivec.h "int v[4] = { 0 };
5771                                 vector signed int v1 = vec_vsx_ld(0, v);"
5772     fi
5773
5774     if enabled power8; then
5775         check_cpp_condition power8 "altivec.h" "defined(_ARCH_PWR8)"
5776     fi
5777
5778 elif enabled x86; then
5779
5780     check_builtin rdtsc    intrin.h   "__rdtsc()"
5781     check_builtin mm_empty mmintrin.h "_mm_empty()"
5782
5783     enable local_aligned
5784
5785     # check whether EBP is available on x86
5786     # As 'i' is stored on the stack, this program will crash
5787     # if the base pointer is used to access it because the
5788     # base pointer is cleared in the inline assembly code.
5789     check_exec_crash <<EOF && enable ebp_available
5790 volatile int i=0;
5791 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5792 return i;
5793 EOF
5794
5795     # check whether EBX is available on x86
5796     check_inline_asm ebx_available '""::"b"(0)' &&
5797         check_inline_asm ebx_available '"":::"%ebx"'
5798
5799     # check whether xmm clobbers are supported
5800     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5801
5802     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5803         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5804
5805     # check whether binutils is new enough to compile SSSE3/MMXEXT
5806     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5807     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5808
5809     probe_x86asm(){
5810         x86asmexe_probe=$1
5811         if test_cmd $x86asmexe_probe -v; then
5812             x86asmexe=$x86asmexe_probe
5813             x86asm_type=nasm
5814             x86asm_debug="-g -F dwarf"
5815             X86ASMDEP=
5816             X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
5817         elif test_cmd $x86asmexe_probe --version; then
5818             x86asmexe=$x86asmexe_probe
5819             x86asm_type=yasm
5820             x86asm_debug="-g dwarf2"
5821             X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
5822             X86ASM_DEPFLAGS=
5823         fi
5824         check_x86asm x86asm "movbe ecx, [5]"
5825     }
5826
5827     if ! disabled_any asm mmx x86asm; then
5828         disable x86asm
5829         for program in $x86asmexe nasm yasm; do
5830             probe_x86asm $program && break
5831         done
5832         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
5833         X86ASMFLAGS="-f $objformat"
5834         enabled pic               && append X86ASMFLAGS "-DPIC"
5835         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
5836         case "$objformat" in
5837             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
5838         esac
5839
5840         check_x86asm avx512_external "vmovdqa32 [eax]{k1}{z}, zmm0"
5841         check_x86asm avx2_external   "vextracti128 xmm0, ymm0, 0"
5842         check_x86asm xop_external    "vpmacsdd xmm0, xmm1, xmm2, xmm3"
5843         check_x86asm fma4_external   "vfmaddps ymm0, ymm1, ymm2, ymm3"
5844         check_x86asm cpunop          "CPU amdnop"
5845     fi
5846
5847     case "$cpu" in
5848         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5849             disable fast_clz
5850         ;;
5851     esac
5852
5853 fi
5854
5855 check_cc intrinsics_neon arm_neon.h "int16x8_t test = vdupq_n_s16(0)"
5856
5857 check_ldflags -Wl,--as-needed
5858 check_ldflags -Wl,-z,noexecstack
5859
5860 if ! disabled network; then
5861     check_func getaddrinfo $network_extralibs
5862     check_func inet_aton $network_extralibs
5863
5864     check_type netdb.h "struct addrinfo"
5865     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5866     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5867     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5868     check_type poll.h "struct pollfd"
5869     check_type netinet/sctp.h "struct sctp_event_subscribe"
5870     check_struct "sys/socket.h" "struct msghdr" msg_flags
5871     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5872     check_type netinet/in.h "struct sockaddr_in6"
5873     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5874     check_type "sys/types.h sys/socket.h" socklen_t
5875
5876     # Prefer arpa/inet.h over winsock2
5877     if check_headers arpa/inet.h ; then
5878         check_func closesocket
5879     elif check_headers winsock2.h ; then
5880         check_func_headers winsock2.h closesocket -lws2 &&
5881             network_extralibs="-lws2" ||
5882         { check_func_headers winsock2.h closesocket -lws2_32 &&
5883             network_extralibs="-lws2_32"; } || disable winsock2_h network
5884         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5885
5886         check_type ws2tcpip.h socklen_t
5887         check_type ws2tcpip.h "struct addrinfo"
5888         check_type ws2tcpip.h "struct group_source_req"
5889         check_type ws2tcpip.h "struct ip_mreq_source"
5890         check_type ws2tcpip.h "struct ipv6_mreq"
5891         check_type winsock2.h "struct pollfd"
5892         check_struct winsock2.h "struct sockaddr" sa_len
5893         check_type ws2tcpip.h "struct sockaddr_in6"
5894         check_type ws2tcpip.h "struct sockaddr_storage"
5895     else
5896         disable network
5897     fi
5898 fi
5899
5900 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5901 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5902 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5903 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5904 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5905 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5906 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5907
5908 case "$custom_allocator" in
5909     jemalloc)
5910         # jemalloc by default does not use a prefix
5911         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5912     ;;
5913     tcmalloc)
5914         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
5915         malloc_prefix=tc_
5916     ;;
5917 esac
5918
5919 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5920 check_func  ${malloc_prefix}memalign            && enable memalign
5921 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5922
5923 check_func  access
5924 check_func_headers stdlib.h arc4random
5925 check_lib   clock_gettime time.h clock_gettime || check_lib clock_gettime time.h clock_gettime -lrt
5926 check_func  fcntl
5927 check_func  fork
5928 check_func  gethrtime
5929 check_func  getopt
5930 check_func  getrusage
5931 check_func  gettimeofday
5932 check_func  isatty
5933 check_func  mkstemp
5934 check_func  mmap
5935 check_func  mprotect
5936 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5937 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
5938 check_func  sched_getaffinity
5939 check_func  setrlimit
5940 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5941 check_func  strerror_r
5942 check_func  sysconf
5943 check_func  sysctl
5944 check_func  usleep
5945
5946 check_func_headers conio.h kbhit
5947 check_func_headers io.h setmode
5948 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5949 check_func_headers mach/mach_time.h mach_absolute_time
5950 check_func_headers stdlib.h getenv
5951 check_func_headers sys/stat.h lstat
5952
5953 check_func_headers windows.h GetProcessAffinityMask
5954 check_func_headers windows.h GetProcessTimes
5955 check_func_headers windows.h GetSystemTimeAsFileTime
5956 check_func_headers windows.h LoadLibrary
5957 check_func_headers windows.h MapViewOfFile
5958 check_func_headers windows.h PeekNamedPipe
5959 check_func_headers windows.h SetConsoleTextAttribute
5960 check_func_headers windows.h SetConsoleCtrlHandler
5961 check_func_headers windows.h Sleep
5962 check_func_headers windows.h VirtualAlloc
5963 check_func_headers glob.h glob
5964 enabled xlib &&
5965     check_lib xlib "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5966
5967 check_headers direct.h
5968 check_headers dirent.h
5969 check_headers dxgidebug.h
5970 check_headers dxva.h
5971 check_headers dxva2api.h -D_WIN32_WINNT=0x0600
5972 check_headers io.h
5973 check_headers linux/perf_event.h
5974 check_headers libcrystalhd/libcrystalhd_if.h
5975 check_headers malloc.h
5976 check_headers net/udplite.h
5977 check_headers poll.h
5978 check_headers sys/param.h
5979 check_headers sys/resource.h
5980 check_headers sys/select.h
5981 check_headers sys/time.h
5982 check_headers sys/un.h
5983 check_headers termios.h
5984 check_headers unistd.h
5985 check_headers valgrind/valgrind.h
5986 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5987 check_headers windows.h
5988 check_headers X11/extensions/XvMClib.h
5989 check_headers asm/types.h
5990
5991 # it seems there are versions of clang in some distros that try to use the
5992 # gcc headers, which explodes for stdatomic
5993 # so we also check that atomics actually work here
5994 check_builtin stdatomic stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0); foo += bar"
5995
5996 check_lib advapi32 "windows.h"            RegCloseKey          -ladvapi32
5997 check_lib bcrypt   "windows.h bcrypt.h"   BCryptGenRandom      -lbcrypt &&
5998     check_cpp_condition bcrypt bcrypt.h "defined BCRYPT_RNG_ALGORITHM"
5999 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
6000 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
6001 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
6002
6003 check_lib android android/native_window.h ANativeWindow_acquire -landroid
6004 check_lib mediandk "stdint.h media/NdkImage.h" AImage_delete -lmediandk
6005 check_lib camera2ndk "stdbool.h stdint.h camera/NdkCameraManager.h" ACameraManager_create -lcamera2ndk
6006
6007 enabled appkit       && check_apple_framework AppKit
6008 enabled audiotoolbox && check_apple_framework AudioToolbox
6009 enabled avfoundation && check_apple_framework AVFoundation
6010 enabled coreimage    && check_apple_framework CoreImage
6011 enabled videotoolbox && check_apple_framework VideoToolbox
6012
6013 check_apple_framework CoreFoundation
6014 check_apple_framework CoreMedia
6015 check_apple_framework CoreVideo
6016
6017 enabled avfoundation && {
6018     disable coregraphics applicationservices
6019     check_lib coregraphics        CoreGraphics/CoreGraphics.h               CGGetActiveDisplayList "-framework CoreGraphics" ||
6020     check_lib applicationservices ApplicationServices/ApplicationServices.h CGGetActiveDisplayList "-framework ApplicationServices"; }
6021
6022 enabled videotoolbox && {
6023     check_lib coreservices CoreServices/CoreServices.h UTGetOSTypeFromString "-framework CoreServices"
6024     check_func_headers CoreMedia/CMFormatDescription.h kCMVideoCodecType_HEVC "-framework CoreMedia"
6025     check_func_headers CoreVideo/CVPixelBuffer.h kCVPixelFormatType_420YpCbCr10BiPlanarVideoRange "-framework CoreVideo"
6026 }
6027
6028 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
6029
6030 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
6031 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
6032 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
6033 check_type "windows.h d3d11.h" "ID3D11VideoContext"
6034 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
6035
6036 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
6037
6038 if enabled cuda_sdk; then
6039     warn "Option --enable-cuda-sdk is deprecated. Use --enable-cuda-nvcc instead."
6040     enable cuda_nvcc
6041 fi
6042
6043 if ! disabled ffnvcodec; then
6044     ffnv_hdr_list="ffnvcodec/nvEncodeAPI.h ffnvcodec/dynlink_cuda.h ffnvcodec/dynlink_cuviddec.h ffnvcodec/dynlink_nvcuvid.h"
6045     check_pkg_config ffnvcodec "ffnvcodec >= 9.0.18.0" "$ffnv_hdr_list" "" || \
6046       check_pkg_config ffnvcodec "ffnvcodec >= 8.2.15.8 ffnvcodec < 8.3" "$ffnv_hdr_list" "" || \
6047       check_pkg_config ffnvcodec "ffnvcodec >= 8.1.24.9 ffnvcodec < 8.2" "$ffnv_hdr_list" "" || \
6048       check_pkg_config ffnvcodec "ffnvcodec >= 8.0.14.9 ffnvcodec < 8.1" "$ffnv_hdr_list" ""
6049 fi
6050
6051 check_cpp_condition winrt windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)"
6052
6053 if ! disabled w32threads && ! enabled pthreads; then
6054     check_func_headers "windows.h process.h" _beginthreadex &&
6055         check_type "windows.h" CONDITION_VARIABLE &&
6056         check_type "windows.h" INIT_ONCE &&
6057         enable w32threads || disable w32threads
6058     if ! enabled w32threads && enabled winrt; then
6059         check_func_headers "windows.h" CreateThread &&
6060             enable w32threads || disable w32threads
6061     fi
6062 fi
6063
6064 # check for some common methods of building with pthread support
6065 # do this before the optional library checks as some of them require pthreads
6066 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
6067     if check_lib pthreads pthread.h pthread_join   -pthread &&
6068        check_lib pthreads pthread.h pthread_create -pthread; then
6069         add_cflags -pthread
6070     elif check_lib pthreads pthread.h pthread_join   -pthreads &&
6071          check_lib pthreads pthread.h pthread_create -pthreads; then
6072         add_cflags -pthreads
6073     elif check_lib pthreads pthread.h pthread_join   -ldl -pthread &&
6074          check_lib pthreads pthread.h pthread_create -ldl -pthread; then
6075         add_cflags -ldl -pthread
6076     elif check_lib pthreads pthread.h pthread_join   -lpthreadGC2 &&
6077          check_lib pthreads pthread.h pthread_create -lpthreadGC2; then
6078         :
6079     elif check_lib pthreads pthread.h pthread_join   -lpthread &&
6080          check_lib pthreads pthread.h pthread_create -lpthread; then
6081         :
6082     elif check_func pthread_join && check_func pthread_create; then
6083         enable pthreads
6084     fi
6085     check_cc pthreads "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER"
6086
6087     if enabled pthreads; then
6088         check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
6089         check_func pthread_cancel $pthreads_extralibs
6090     fi
6091 fi
6092
6093 enabled  zlib && { check_pkg_config zlib zlib "zlib.h" zlibVersion ||
6094                    check_lib zlib   zlib.h      zlibVersion    -lz; }
6095 enabled bzlib && check_lib bzlib bzlib.h BZ2_bzlibVersion    -lbz2
6096 enabled  lzma && check_lib lzma   lzma.h lzma_version_number -llzma
6097
6098 # On some systems dynamic loading requires no extra linker flags
6099 check_lib libdl dlfcn.h "dlopen dlsym" || check_lib libdl dlfcn.h "dlopen dlsym" -ldl
6100
6101 check_lib libm math.h sin -lm
6102
6103 atan2f_args=2
6104 copysign_args=2
6105 hypot_args=2
6106 ldexpf_args=2
6107 powf_args=2
6108
6109 for func in $MATH_FUNCS; do
6110     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
6111 done
6112
6113 for func in $COMPLEX_FUNCS; do
6114     eval check_complexfunc $func \${${func}_args:-1}
6115 done
6116
6117 # these are off by default, so fail if requested and not available
6118 enabled cuda_nvcc         && { check_nvcc || die "ERROR: failed checking for nvcc."; }
6119 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
6120 enabled decklink          && { require_headers DeckLinkAPI.h &&
6121                                { test_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a090500" || die "ERROR: Decklink API version must be >= 10.9.5."; } }
6122 enabled frei0r            && require_headers "frei0r.h dlfcn.h"
6123 enabled gmp               && require gmp gmp.h mpz_export -lgmp
6124 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init
6125 enabled jni               && { [ $target_os = "android" ] && check_headers jni.h && enabled pthreads || die "ERROR: jni not found"; }
6126 enabled ladspa            && require_headers "ladspa.h dlfcn.h"
6127 enabled libaom            && require_pkg_config libaom "aom >= 1.0.0" aom/aom_codec.h aom_codec_version
6128 enabled libaribb24        && { check_pkg_config libaribb24 "aribb24 > 1.0.3" "aribb24/aribb24.h" arib_instance_new ||
6129                                { enabled gpl && require_pkg_config libaribb24 aribb24 "aribb24/aribb24.h" arib_instance_new; } ||
6130                                die "ERROR: libaribb24 requires version higher than 1.0.3 or --enable-gpl."; }
6131 enabled lv2               && require_pkg_config lv2 lilv-0 "lilv/lilv.h" lilv_world_new
6132 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
6133 enabled libass            && require_pkg_config libass libass ass/ass.h ass_library_init
6134 enabled libbluray         && require_pkg_config libbluray libbluray libbluray/bluray.h bd_open
6135 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
6136 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
6137                              { check_lib libcelt celt/celt.h celt_decoder_create_custom -lcelt0 ||
6138                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
6139 enabled libcaca           && require_pkg_config libcaca caca caca.h caca_create_canvas
6140 enabled libcodec2         && require libcodec2 codec2/codec2.h codec2_create -lcodec2
6141 enabled libdav1d          && require_pkg_config libdav1d "dav1d >= 0.2.1" "dav1d/dav1d.h" dav1d_version
6142 enabled libdavs2          && require_pkg_config libdavs2 "davs2 >= 1.6.0" davs2.h davs2_decoder_open
6143 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
6144 enabled libdrm            && require_pkg_config libdrm libdrm xf86drm.h drmGetVersion
6145 enabled libfdk_aac        && { check_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
6146                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
6147                                  warn "using libfdk without pkg-config"; } }
6148 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"
6149 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_extralibs
6150 enabled fontconfig        && enable libfontconfig
6151 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
6152 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
6153 enabled libfribidi        && require_pkg_config libfribidi fribidi fribidi.h fribidi_version_info
6154 enabled libgme            && { check_pkg_config libgme libgme gme/gme.h gme_new_emu ||
6155                                require libgme gme/gme.h gme_new_emu -lgme -lstdc++; }
6156 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
6157                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
6158                                done || die "ERROR: libgsm not found"; }
6159 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc $pthreads_extralibs
6160 enabled libklvanc         && require libklvanc libklvanc/vanc.h klvanc_context_create -lklvanc
6161 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
6162 enabled liblensfun        && require_pkg_config liblensfun lensfun lensfun.h lf_db_new
6163 # While it may appear that require is being used as a pkg-config
6164 # fallback for libmfx, it is actually being used to detect a different
6165 # installation route altogether.  If libmfx is installed via the Intel
6166 # Media SDK or Intel Media Server Studio, these don't come with
6167 # pkg-config support.  Instead, users should make sure that the build
6168 # can find the libraries and headers through other means.
6169 enabled libmfx            && { check_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit ||
6170                                { require libmfx "mfx/mfxvideo.h" MFXInit "-llibmfx $advapi32_extralibs" && warn "using libmfx without pkg-config"; } }
6171 enabled libmodplug        && require_pkg_config libmodplug libmodplug libmodplug/modplug.h ModPlug_Load
6172 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame $libm_extralibs
6173 enabled libmysofa         && { check_pkg_config libmysofa libmysofa mysofa.h mysofa_load ||
6174                                require libmysofa mysofa.h mysofa_load -lmysofa $zlib_extralibs; }
6175 enabled libnpp            && { check_lib libnpp npp.h nppGetLibVersion -lnppig -lnppicc -lnppc -lnppidei ||
6176                                check_lib libnpp npp.h nppGetLibVersion -lnppi -lnppc -lnppidei ||
6177                                die "ERROR: libnpp not found"; }
6178 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
6179 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
6180 enabled libopencv         && { check_headers opencv2/core/core_c.h &&
6181                                { check_pkg_config libopencv opencv opencv2/core/core_c.h cvCreateImageHeader ||
6182                                  require libopencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
6183                                require_pkg_config libopencv opencv opencv/cxcore.h cvCreateImageHeader; }
6184 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
6185 enabled libopenjpeg       && { check_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version ||
6186                                { require_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } }
6187 enabled libopenmpt        && require_pkg_config libopenmpt "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create -lstdc++ && append libopenmpt_extralibs "-lstdc++"
6188 enabled libopus           && {
6189     enabled libopus_decoder && {
6190         require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
6191     }
6192     enabled libopus_encoder && {
6193         require_pkg_config libopus opus opus_multistream.h opus_multistream_surround_encoder_create
6194     }
6195 }
6196 enabled libpulse          && require_pkg_config libpulse libpulse pulse/pulseaudio.h pa_context_new
6197 enabled librsvg           && require_pkg_config librsvg librsvg-2.0 librsvg-2.0/librsvg/rsvg.h rsvg_handle_render_cairo
6198 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
6199 enabled librubberband     && require_pkg_config librubberband "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new -lstdc++ && append librubberband_extralibs "-lstdc++"
6200 enabled libshine          && require_pkg_config libshine shine shine/layer3.h shine_encode_buffer
6201 enabled libsmbclient      && { check_pkg_config libsmbclient smbclient libsmbclient.h smbc_init ||
6202                                require libsmbclient libsmbclient.h smbc_init -lsmbclient; }
6203 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy -lstdc++
6204 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
6205 enabled libssh            && require_pkg_config libssh libssh libssh/sftp.h sftp_init
6206 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init
6207 enabled libsrt            && require_pkg_config libsrt "srt >= 1.3.0" srt/srt.h srt_socket
6208 enabled libtensorflow     && require libtensorflow tensorflow/c/c_api.h TF_Version -ltensorflow
6209 enabled libtesseract      && require_pkg_config libtesseract tesseract tesseract/capi.h TessBaseAPICreate
6210 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
6211 enabled libtls            && require_pkg_config libtls libtls tls.h tls_configure
6212 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
6213                              { check_lib libtwolame twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
6214                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
6215 enabled libv4l2           && require_pkg_config libv4l2 libv4l2 libv4l2.h v4l2_ioctl
6216 enabled libvidstab        && require_pkg_config libvidstab "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
6217 enabled libvmaf           && require_pkg_config libvmaf "libvmaf >= 1.3.9" libvmaf.h compute_vmaf
6218 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
6219 enabled libvorbis         && require_pkg_config libvorbis vorbis vorbis/codec.h vorbis_info_init &&
6220                              require_pkg_config libvorbisenc vorbisenc vorbis/vorbisenc.h vorbis_encode_init
6221
6222 enabled libvpx            && {
6223     enabled libvpx_vp8_decoder && {
6224         check_pkg_config libvpx_vp8_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
6225             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"
6226     }
6227     enabled libvpx_vp8_encoder && {
6228         check_pkg_config libvpx_vp8_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
6229             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"
6230     }
6231     enabled libvpx_vp9_decoder && {
6232         check_pkg_config libvpx_vp9_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
6233             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"
6234     }
6235     enabled libvpx_vp9_encoder && {
6236         check_pkg_config libvpx_vp9_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
6237             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"
6238     }
6239     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
6240         die "libvpx enabled but no supported decoders found"
6241     fi
6242 }
6243
6244 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
6245 enabled libwebp           && {
6246     enabled libwebp_encoder      && require_pkg_config libwebp "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
6247     enabled libwebp_anim_encoder && check_pkg_config libwebp_anim_encoder "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit; }
6248 enabled libx264           && { check_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode ||
6249                                { require libx264 "stdint.h x264.h" x264_encoder_encode "-lx264 $pthreads_extralibs $libm_extralibs" &&
6250                                  warn "using libx264 without pkg-config"; } } &&
6251                              require_cpp_condition libx264 x264.h "X264_BUILD >= 118" &&
6252                              check_cpp_condition libx262 x264.h "X264_MPEG2"
6253 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
6254                              require_cpp_condition libx265 x265.h "X265_BUILD >= 68"
6255 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode "-lxavs $pthreads_extralibs $libm_extralibs"
6256 enabled libxavs2          && require_pkg_config libxavs2 "xavs2 >= 1.3.0" "stdint.h xavs2.h" xavs2_api_get
6257 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
6258 enabled libzimg           && require_pkg_config libzimg "zimg >= 2.7.0" zimg.h zimg_get_api_version
6259 enabled libzmq            && require_pkg_config libzmq libzmq zmq.h zmq_ctx_new
6260 enabled libzvbi           && require_pkg_config libzvbi zvbi-0.2 libzvbi.h vbi_decoder_new &&
6261                              { test_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
6262                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
6263 enabled libxml2           && require_pkg_config libxml2 libxml-2.0 libxml2/libxml/xmlversion.h xmlCheckVersion
6264 enabled mbedtls           && { check_pkg_config mbedtls mbedtls mbedtls/x509_crt.h mbedtls_x509_crt_init ||
6265                                check_pkg_config mbedtls mbedtls mbedtls/ssl.h mbedtls_ssl_init ||
6266                                check_lib mbedtls mbedtls/ssl.h mbedtls_ssl_init -lmbedtls -lmbedx509 -lmbedcrypto ||
6267                                die "ERROR: mbedTLS not found"; }
6268 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
6269 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
6270                                { ! enabled cross_compile &&
6271                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
6272                                  add_ldflags -L/opt/vc/lib/ &&
6273                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
6274                                die "ERROR: mmal not found" &&
6275                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
6276 enabled openal            && { { for al_extralibs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
6277                                check_lib openal 'AL/al.h' alGetError "${al_extralibs}" && break; done } ||
6278                                die "ERROR: openal not found"; } &&
6279                              { test_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
6280                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
6281 enabled opencl            && { check_pkg_config opencl OpenCL CL/cl.h clEnqueueNDRangeKernel ||
6282                                check_lib opencl OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
6283                                check_lib opencl CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
6284                                die "ERROR: opencl not found"; } &&
6285                              { test_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
6286                                test_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
6287                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
6288 enabled opengl            && { check_lib opengl GL/glx.h glXGetProcAddress "-lGL" ||
6289                                check_lib opengl windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
6290                                check_lib opengl OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
6291                                check_lib opengl ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
6292                                die "ERROR: opengl not found."
6293                              }
6294 enabled omx               && require_headers OMX_Core.h
6295 enabled omx_rpi           && { check_headers OMX_Core.h ||
6296                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_headers OMX_Core.h ; } ||
6297                                die "ERROR: OpenMAX IL headers not found"; } && enable omx
6298 enabled openssl           && { check_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
6299                                check_pkg_config openssl openssl openssl/ssl.h SSL_library_init ||
6300                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
6301                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
6302                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
6303                                die "ERROR: openssl not found"; }
6304 enabled pocketsphinx      && require_pkg_config pocketsphinx pocketsphinx pocketsphinx/pocketsphinx.h ps_init
6305 enabled rkmpp             && { require_pkg_config rkmpp rockchip_mpp  rockchip/rk_mpi.h mpp_create &&
6306                                require_pkg_config rockchip_mpp "rockchip_mpp >= 1.3.7" rockchip/rk_mpi.h mpp_create &&
6307                                { enabled libdrm ||
6308                                  die "ERROR: rkmpp requires --enable-libdrm"; }
6309                              }
6310 enabled vapoursynth       && require_pkg_config vapoursynth "vapoursynth-script >= 42" VSScript.h vsscript_init
6311
6312
6313 if enabled gcrypt; then
6314     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
6315     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
6316         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
6317         gcrypt_extralibs=$("${GCRYPT_CONFIG}" --libs)
6318         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_extralibs ||
6319             die "ERROR: gcrypt not found"
6320         add_cflags $gcrypt_cflags
6321     else
6322         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
6323     fi
6324 fi
6325
6326 if enabled sdl2; then
6327     SDL2_CONFIG="${cross_prefix}sdl2-config"
6328     test_pkg_config sdl2 "sdl2 >= 2.0.1 sdl2 < 2.1.0" SDL_events.h SDL_PollEvent
6329     if disabled sdl2 && "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
6330         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
6331         sdl2_extralibs=$("${SDL2_CONFIG}" --libs)
6332         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
6333         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
6334         check_func_headers SDL_events.h SDL_PollEvent $sdl2_extralibs $sdl2_cflags &&
6335             enable sdl2
6336     fi
6337     if test $target_os = "mingw32"; then
6338         sdl2_extralibs=$(filter_out '-mwindows' $sdl2_extralibs)
6339     fi
6340 fi
6341
6342 if enabled decklink; then
6343     case $target_os in
6344         mingw32*|mingw64*|win32|win64)
6345             decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
6346             decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
6347             ;;
6348     esac
6349 fi
6350
6351 enabled securetransport &&
6352     check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
6353     check_lib securetransport "Security/SecureTransport.h Security/Security.h" "SSLCreateContext" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" ||
6354         disable securetransport
6355
6356 enabled securetransport &&
6357     check_func SecItemImport "-Wl,-framework,CoreFoundation -Wl,-framework,Security"
6358
6359 enabled schannel &&
6360     check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
6361     test_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" &&
6362     schannel_extralibs="-lsecur32" ||
6363         disable schannel
6364
6365 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
6366 enabled makeinfo \
6367     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
6368     && enable makeinfo_html || disable makeinfo_html
6369 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
6370 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
6371 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
6372 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
6373
6374 # check V4L2 codecs available in the API
6375 check_headers linux/fb.h
6376 check_headers linux/videodev2.h
6377 test_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6378 check_cc v4l2_m2m linux/videodev2.h "int i = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_VIDEO_M2M | V4L2_BUF_FLAG_LAST;"
6379 check_cc vc1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VC1_ANNEX_G;"
6380 check_cc mpeg1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG1;"
6381 check_cc mpeg2_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG2;"
6382 check_cc mpeg4_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG4;"
6383 check_cc hevc_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_HEVC;"
6384 check_cc h263_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H263;"
6385 check_cc h264_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H264;"
6386 check_cc vp8_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP8;"
6387 check_cc vp9_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP9;"
6388
6389 check_headers sys/videoio.h
6390 test_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6391
6392 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
6393 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
6394 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
6395 # w32api 3.12 had it defined wrong
6396 check_cpp_condition vfwcap_defines vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER"
6397
6398 check_type "dshow.h" IBaseFilter
6399
6400 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
6401 check_headers "dev/bktr/ioctl_meteor.h dev/bktr/ioctl_bt848.h"                   ||
6402     check_headers "machine/ioctl_meteor.h machine/ioctl_bt848.h"                 ||
6403     check_headers "dev/video/meteor/ioctl_meteor.h dev/video/bktr/ioctl_bt848.h" ||
6404     check_headers "dev/ic/bt8xx.h"
6405
6406 if check_struct sys/soundcard.h audio_buf_info bytes; then
6407     enable_sanitized sys/soundcard.h
6408 else
6409     test_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_sanitized sys/soundcard.h
6410     #include <sys/soundcard.h>
6411     audio_buf_info abc;
6412 EOF
6413 fi
6414
6415 enabled alsa && check_pkg_config alsa alsa "alsa/asoundlib.h" snd_pcm_htimestamp ||
6416     check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound
6417
6418 enabled libjack &&
6419     require_pkg_config libjack jack jack/jack.h jack_port_get_latency_range
6420
6421 enabled sndio && check_lib sndio sndio.h sio_open -lsndio
6422
6423 if enabled libcdio; then
6424     check_pkg_config libcdio libcdio_paranoia "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open ||
6425     check_pkg_config libcdio libcdio_paranoia "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open ||
6426     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6427     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6428     die "ERROR: No usable libcdio/cdparanoia found"
6429 fi
6430
6431 enabled libxcb && check_pkg_config libxcb "xcb >= 1.4" xcb/xcb.h xcb_connect ||
6432     disable libxcb_shm libxcb_shape libxcb_xfixes
6433
6434 if enabled libxcb; then
6435     enabled libxcb_shm    && check_pkg_config libxcb_shm    xcb-shm    xcb/shm.h    xcb_shm_attach
6436     enabled libxcb_shape  && check_pkg_config libxcb_shape  xcb-shape  xcb/shape.h  xcb_shape_get_rectangles
6437     enabled libxcb_xfixes && check_pkg_config libxcb_xfixes xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image
6438 fi
6439
6440 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6441
6442 # d3d11va requires linking directly to dxgi and d3d11 if not building for
6443 # the desktop api partition
6444 test_cpp <<EOF && enable uwp && d3d11va_extralibs="-ldxgi -ld3d11"
6445 #ifdef WINAPI_FAMILY
6446 #include <winapifamily.h>
6447 #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
6448 #error desktop, not uwp
6449 #else
6450 // WINAPI_FAMILY_APP, WINAPI_FAMILY_PHONE_APP => UWP
6451 #endif
6452 #else
6453 #error no family set
6454 #endif
6455 EOF
6456
6457 enabled vaapi &&
6458     check_pkg_config vaapi "libva >= 0.35.0" "va/va.h" vaInitialize
6459
6460 if enabled vaapi; then
6461     check_pkg_config vaapi_drm "libva-drm" "va/va_drm.h" vaGetDisplayDRM
6462
6463     if enabled xlib; then
6464         check_pkg_config vaapi_x11 "libva-x11" "va/va_x11.h" vaGetDisplay
6465     fi
6466
6467     check_cpp_condition vaapi_1 "va/va.h" "VA_CHECK_VERSION(1, 0, 0)"
6468
6469     check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
6470     check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
6471     check_struct "va/va.h va/va_vpp.h" "VAProcPipelineCaps" rotation_flags
6472     check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
6473     check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
6474     check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
6475     check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
6476 fi
6477
6478 if enabled_all opencl libdrm ; then
6479     check_type "CL/cl_intel.h" "clCreateImageFromFdINTEL_fn" &&
6480         enable opencl_drm_beignet
6481     check_func_headers "CL/cl_ext.h" clImportMemoryARM &&
6482         enable opencl_drm_arm
6483 fi
6484
6485 if enabled_all opencl vaapi ; then
6486     if enabled opencl_drm_beignet ; then
6487         enable opencl_vaapi_beignet
6488     else
6489         check_type "CL/cl.h CL/cl_va_api_media_sharing_intel.h" "clCreateFromVA_APIMediaSurfaceINTEL_fn" &&
6490             enable opencl_vaapi_intel_media
6491     fi
6492 fi
6493
6494 if enabled_all opencl dxva2 ; then
6495     check_type "CL/cl_dx9_media_sharing.h" cl_dx9_surface_info_khr &&
6496         enable opencl_dxva2
6497 fi
6498
6499 if enabled_all opencl d3d11va ; then
6500     check_type "CL/cl_d3d11.h" clGetDeviceIDsFromD3D11KHR_fn &&
6501         enable opencl_d3d11
6502 fi
6503
6504 enabled vdpau &&
6505     check_cpp_condition vdpau vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP"
6506
6507 enabled vdpau &&
6508     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
6509
6510 enabled crystalhd && check_lib crystalhd "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd
6511
6512 if enabled x86; then
6513     case $target_os in
6514         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6515             ;;
6516         *)
6517             disable ffnvcodec cuvid nvdec nvenc
6518             ;;
6519     esac
6520 elif enabled ppc64 && ! enabled bigendian; then
6521     case $target_os in
6522         linux)
6523             ;;
6524         *)
6525             disable ffnvcodec cuvid nvdec nvenc
6526             ;;
6527     esac
6528 else
6529     disable ffnvcodec cuvid nvdec nvenc
6530 fi
6531
6532 enabled ffnvcodec && enable cuda
6533
6534 enabled nvenc &&
6535     test_cc -I$source_path <<EOF || disable nvenc
6536 #include <ffnvcodec/nvEncodeAPI.h>
6537 NV_ENCODE_API_FUNCTION_LIST flist;
6538 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6539 int main(void) { return 0; }
6540 EOF
6541
6542 enabled amf &&
6543     check_cpp_condition amf "AMF/core/Version.h" \
6544         "(AMF_VERSION_MAJOR << 48 | AMF_VERSION_MINOR << 32 | AMF_VERSION_RELEASE << 16 | AMF_VERSION_BUILD_NUM) >= 0x0001000400040001"
6545
6546 # Funny iconv installations are not unusual, so check it after all flags have been set
6547 if enabled libc_iconv; then
6548     check_func_headers iconv.h iconv
6549 elif enabled iconv; then
6550     check_func_headers iconv.h iconv || check_lib iconv iconv.h iconv -liconv
6551 fi
6552
6553 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6554
6555 # add some useful compiler flags if supported
6556 check_cflags -Wdeclaration-after-statement
6557 check_cflags -Wall
6558 check_cflags -Wdisabled-optimization
6559 check_cflags -Wpointer-arith
6560 check_cflags -Wredundant-decls
6561 check_cflags -Wwrite-strings
6562 check_cflags -Wtype-limits
6563 check_cflags -Wundef
6564 check_cflags -Wmissing-prototypes
6565 check_cflags -Wno-pointer-to-int-cast
6566 check_cflags -Wstrict-prototypes
6567 check_cflags -Wempty-body
6568
6569 if enabled extra_warnings; then
6570     check_cflags -Wcast-qual
6571     check_cflags -Wextra
6572     check_cflags -Wpedantic
6573 fi
6574
6575 check_disable_warning(){
6576     warning_flag=-W${1#-Wno-}
6577     test_cflags $unknown_warning_flags $warning_flag && add_cflags $1
6578 }
6579
6580 test_cflags -Werror=unused-command-line-argument &&
6581     append unknown_warning_flags "-Werror=unused-command-line-argument"
6582 test_cflags -Werror=unknown-warning-option &&
6583     append unknown_warning_flags "-Werror=unknown-warning-option"
6584
6585 check_disable_warning -Wno-parentheses
6586 check_disable_warning -Wno-switch
6587 check_disable_warning -Wno-format-zero-length
6588 check_disable_warning -Wno-pointer-sign
6589 check_disable_warning -Wno-unused-const-variable
6590 check_disable_warning -Wno-bool-operation
6591 check_disable_warning -Wno-char-subscripts
6592
6593 check_disable_warning_headers(){
6594     warning_flag=-W${1#-Wno-}
6595     test_cflags $warning_flag && add_cflags_headers $1
6596 }
6597
6598 check_disable_warning_headers -Wno-deprecated-declarations
6599 check_disable_warning_headers -Wno-unused-variable
6600
6601 test_cc <<EOF && enable blocks_extension
6602 void (^block)(void);
6603 EOF
6604
6605 # add some linker flags
6606 check_ldflags -Wl,--warn-common
6607 check_ldflags -Wl,-rpath-link=:libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6608 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir && add_ldsoflags -Wl,-rpath,$libdir
6609 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6610
6611 # add some strip flags
6612 check_stripflags -x
6613
6614 enabled neon_clobber_test &&
6615     check_ldflags -Wl,--wrap,avcodec_open2              \
6616                   -Wl,--wrap,avcodec_decode_audio4      \
6617                   -Wl,--wrap,avcodec_decode_video2      \
6618                   -Wl,--wrap,avcodec_decode_subtitle2   \
6619                   -Wl,--wrap,avcodec_encode_audio2      \
6620                   -Wl,--wrap,avcodec_encode_video2      \
6621                   -Wl,--wrap,avcodec_encode_subtitle    \
6622                   -Wl,--wrap,avcodec_send_packet        \
6623                   -Wl,--wrap,avcodec_receive_packet     \
6624                   -Wl,--wrap,avcodec_send_frame         \
6625                   -Wl,--wrap,avcodec_receive_frame      \
6626                   -Wl,--wrap,swr_convert                \
6627                   -Wl,--wrap,avresample_convert ||
6628     disable neon_clobber_test
6629
6630 enabled xmm_clobber_test &&
6631     check_ldflags -Wl,--wrap,avcodec_open2              \
6632                   -Wl,--wrap,avcodec_decode_audio4      \
6633                   -Wl,--wrap,avcodec_decode_video2      \
6634                   -Wl,--wrap,avcodec_decode_subtitle2   \
6635                   -Wl,--wrap,avcodec_encode_audio2      \
6636                   -Wl,--wrap,avcodec_encode_video2      \
6637                   -Wl,--wrap,avcodec_encode_subtitle    \
6638                   -Wl,--wrap,avcodec_send_packet        \
6639                   -Wl,--wrap,avcodec_receive_packet     \
6640                   -Wl,--wrap,avcodec_send_frame         \
6641                   -Wl,--wrap,avcodec_receive_frame      \
6642                   -Wl,--wrap,swr_convert                \
6643                   -Wl,--wrap,avresample_convert         \
6644                   -Wl,--wrap,sws_scale ||
6645     disable xmm_clobber_test
6646
6647 check_ld "cc" proper_dce <<EOF
6648 extern const int array[512];
6649 static inline int func(void) { return array[0]; }
6650 int main(void) { return 0; }
6651 EOF
6652
6653 if enabled proper_dce; then
6654     echo "X { local: *; };" > $TMPV
6655     if test_ldflags -Wl,${version_script},$TMPV; then
6656         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6657         quotes='""'
6658         test_cc <<EOF && enable symver_asm_label
6659 void ff_foo(void) __asm__ ("av_foo@VERSION");
6660 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6661 EOF
6662         test_cc <<EOF && enable symver_gnu_asm
6663 __asm__(".symver ff_foo,av_foo@VERSION");
6664 void ff_foo(void) {}
6665 EOF
6666     fi
6667 fi
6668
6669 if [ -z "$optflags" ]; then
6670     if enabled small; then
6671         optflags=$cflags_size
6672     elif enabled optimizations; then
6673         optflags=$cflags_speed
6674     else
6675         optflags=$cflags_noopt
6676     fi
6677 fi
6678
6679 if [ -z "$nvccflags" ]; then
6680     nvccflags=$nvccflags_default
6681 fi
6682
6683 if enabled x86_64 || enabled ppc64 || enabled aarch64; then
6684     nvccflags="$nvccflags -m64"
6685 else
6686     nvccflags="$nvccflags -m32"
6687 fi
6688
6689 check_optflags(){
6690     check_cflags "$@"
6691     enabled lto && check_ldflags "$@"
6692 }
6693
6694 check_optflags $optflags
6695 check_optflags -fno-math-errno
6696 check_optflags -fno-signed-zeros
6697
6698 if enabled lto; then
6699     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6700     check_cflags  -flto
6701     check_ldflags -flto $cpuflags
6702     disable inline_asm_direct_symbol_refs
6703 fi
6704
6705 enabled ftrapv && check_cflags -ftrapv
6706
6707 test_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6708 int x;
6709 EOF
6710
6711
6712 if enabled icc; then
6713     # Just warnings, no remarks
6714     check_cflags -w1
6715     # -wd: Disable following warnings
6716     # 144, 167, 556: -Wno-pointer-sign
6717     # 188: enumerated type mixed with another type
6718     # 1292: attribute "foo" ignored
6719     # 1419: external declaration in primary source file
6720     # 10006: ignoring unknown option -fno-signed-zeros
6721     # 10148: ignoring unknown option -Wno-parentheses
6722     # 10156: ignoring option '-W'; no argument required
6723     # 13200: No EMMS instruction before call to function
6724     # 13203: No EMMS instruction before return from function
6725     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6726     # 11030: Warning unknown option --as-needed
6727     # 10156: ignoring option '-export'; no argument required
6728     check_ldflags -wd10156,11030
6729     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6730     enable ebp_available
6731     # The test above does not test linking
6732     enabled lto && disable symver_asm_label
6733     if enabled x86_32; then
6734         icc_version=$($cc -dumpversion)
6735         test ${icc_version%%.*} -ge 11 &&
6736             check_cflags -falign-stack=maintain-16-byte ||
6737             disable aligned_stack
6738     fi
6739 elif enabled gcc; then
6740     check_optflags -fno-tree-vectorize
6741     check_cflags -Werror=format-security
6742     check_cflags -Werror=implicit-function-declaration
6743     check_cflags -Werror=missing-prototypes
6744     check_cflags -Werror=return-type
6745     check_cflags -Werror=vla
6746     check_cflags -Wformat
6747     check_cflags -fdiagnostics-color=auto
6748     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6749     if enabled x86_32; then
6750         case $target_os in
6751         *bsd*)
6752             # BSDs don't guarantee a 16 byte aligned stack, but we can
6753             # request GCC to try to maintain 16 byte alignment throughout
6754             # function calls. Library entry points that might call assembly
6755             # functions align the stack. (The parameter means 2^4 bytes.)
6756             check_cflags -mpreferred-stack-boundary=4
6757             ;;
6758         esac
6759     fi
6760 elif enabled llvm_gcc; then
6761     check_cflags -mllvm -stack-alignment=16
6762 elif enabled clang; then
6763     if enabled x86_32; then
6764         # Clang doesn't support maintaining alignment without assuming the
6765         # same alignment in every function. If 16 byte alignment would be
6766         # enabled, one would also have to either add attribute_align_arg on
6767         # every single entry point into the libraries or enable -mstackrealign
6768         # (doing stack realignment in every single function).
6769         case $target_os in
6770         mingw32|win32|*bsd*)
6771             disable aligned_stack
6772             ;;
6773         *)
6774             check_cflags -mllvm -stack-alignment=16
6775             check_cflags -mstack-alignment=16
6776             ;;
6777         esac
6778     else
6779         check_cflags -mllvm -stack-alignment=16
6780         check_cflags -mstack-alignment=16
6781     fi
6782     check_cflags -Qunused-arguments
6783     check_cflags -Werror=implicit-function-declaration
6784     check_cflags -Werror=missing-prototypes
6785     check_cflags -Werror=return-type
6786 elif enabled cparser; then
6787     add_cflags -Wno-missing-variable-declarations
6788     add_cflags -Wno-empty-statement
6789 elif enabled armcc; then
6790     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6791     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6792     # 2523: use of inline assembly is deprecated
6793     add_cflags -W${armcc_opt},--diag_suppress=2523
6794     add_cflags -W${armcc_opt},--diag_suppress=1207
6795     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6796     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6797     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6798     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6799 elif enabled pathscale; then
6800     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6801     disable inline_asm
6802 elif enabled_any msvc icl; then
6803     enabled x86_32 && disable aligned_stack
6804     enabled_all x86_32 debug && add_cflags -Oy-
6805     enabled debug && add_ldflags -debug
6806     enable pragma_deprecated
6807     if enabled icl; then
6808         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6809         # (correctly) on icl 13.x.
6810         test_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6811             add_cflags -Qansi-alias
6812         # Some inline asm is not compilable in debug
6813         if enabled debug; then
6814             disable ebp_available
6815             disable ebx_available
6816         fi
6817     fi
6818     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6819     check_cpp_condition log2 crtversion.h "_VC_CRT_MAJOR_VERSION >= 12"
6820     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6821     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6822     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6823     # MSVC 2013 and newer can handle it fine.
6824     # If this declspec fails, force including stdlib.h before the restrict redefinition
6825     # happens in config.h.
6826     if [ $restrict_keyword != restrict ]; then
6827         test_cc <<EOF || add_cflags -FIstdlib.h
6828 __declspec($restrict_keyword) void *foo(int);
6829 EOF
6830     fi
6831     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6832     # Issue has been fixed in MSVC v19.00.24218.
6833     test_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6834         check_cflags -d2SSAOptimizer-
6835     # enable utf-8 source processing on VS2015 U2 and newer
6836     test_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6837         add_cflags -utf-8
6838 fi
6839
6840 for pfx in "" host_; do
6841     varname=${pfx%_}cc_type
6842     eval "type=\$$varname"
6843     if [ "$type" = "msvc" ]; then
6844         test_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6845 static inline int foo(int a) { return a; }
6846 EOF
6847     fi
6848 done
6849
6850 case $as_type in
6851     clang)
6852         add_asflags -Qunused-arguments
6853     ;;
6854 esac
6855
6856 case $ld_type in
6857     clang)
6858         check_ldflags -Qunused-arguments
6859     ;;
6860 esac
6861
6862 enable frame_thread_encoder
6863
6864 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6865
6866 check_deps $CONFIG_LIST       \
6867            $CONFIG_EXTRA      \
6868            $HAVE_LIST         \
6869            $ALL_COMPONENTS    \
6870
6871 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"
6872 enabled avresample && warn "Building with deprecated library libavresample"
6873
6874 case $target_os in
6875 haiku)
6876     disable memalign
6877     disable posix_memalign
6878     ;;
6879 *-dos|freedos|opendos)
6880     if test_cpp_condition sys/version.h "defined(__DJGPP__) && __DJGPP__ == 2 && __DJGPP_MINOR__ == 5"; then
6881         disable memalign
6882     fi
6883     ;;
6884 esac
6885
6886 flatten_extralibs(){
6887     nested_entries=
6888     list_name=$1
6889     eval list=\$${1}
6890     for entry in $list; do
6891         entry_copy=$entry
6892         resolve entry_copy
6893         flat_entries=
6894         for e in $entry_copy; do
6895             case $e in
6896                 *_extralibs) nested_entries="$nested_entries$e ";;
6897                           *) flat_entries="$flat_entries$e ";;
6898             esac
6899         done
6900         eval $entry="\$flat_entries"
6901     done
6902     append $list_name "$nested_entries"
6903
6904     resolve nested_entries
6905     if test -n "$(filter '*_extralibs' $nested_entries)"; then
6906         flatten_extralibs $list_name
6907     fi
6908 }
6909
6910 flatten_extralibs_wrapper(){
6911     list_name=$1
6912     flatten_extralibs $list_name
6913     unique $list_name
6914     resolve $list_name
6915     eval $list_name=\$\(\$ldflags_filter \$$list_name\)
6916     eval printf \''%s'\' \""\$$list_name"\"
6917 }
6918
6919 for linkunit in $LIBRARY_LIST; do
6920     unset current_extralibs
6921     eval components=\$$(toupper ${linkunit})_COMPONENTS_LIST
6922     for comp in ${components}; do
6923         enabled $comp || continue
6924         comp_extralibs="${comp}_extralibs"
6925         append current_extralibs $comp_extralibs
6926     done
6927     eval prepend ${linkunit}_extralibs $current_extralibs
6928 done
6929
6930 for linkunit in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
6931     eval ${linkunit}_extralibs=\$\(flatten_extralibs_wrapper ${linkunit}_extralibs\)
6932 done
6933
6934 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6935
6936 for thread in $THREADS_LIST; do
6937     if enabled $thread; then
6938         test -n "$thread_type" &&
6939             die "ERROR: Only one thread type must be selected." ||
6940             thread_type="$thread"
6941     fi
6942 done
6943
6944 if disabled stdatomic; then
6945     if enabled atomics_gcc; then
6946         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
6947     elif enabled atomics_win32; then
6948         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
6949     elif enabled atomics_suncc; then
6950         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
6951     elif enabled pthreads; then
6952         add_compat atomics/pthread/stdatomic.o
6953         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
6954     else
6955         enabled threads && die "Threading is enabled, but no atomics are available"
6956         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
6957     fi
6958 fi
6959
6960 # Check if requested libraries were found.
6961 for lib in $AUTODETECT_LIBS; do
6962     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
6963 done
6964
6965 enabled zlib && add_cppflags -DZLIB_CONST
6966
6967 # conditional library dependencies, in any order
6968 enabled afftdn_filter       && prepend avfilter_deps "avcodec"
6969 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6970 enabled afir_filter         && prepend avfilter_deps "avcodec"
6971 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6972 enabled aresample_filter    && prepend avfilter_deps "swresample"
6973 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6974 enabled bm3d_filter         && prepend avfilter_deps "avcodec"
6975 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6976 enabled convolve_filter     && prepend avfilter_deps "avcodec"
6977 enabled deconvolve_filter   && prepend avfilter_deps "avcodec"
6978 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6979 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6980 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6981 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6982 enabled firequalizer_filter && prepend avfilter_deps "avcodec"
6983 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6984 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6985 enabled pan_filter          && prepend avfilter_deps "swresample"
6986 enabled pp_filter           && prepend avfilter_deps "postproc"
6987 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6988 enabled resample_filter && prepend avfilter_deps "avresample"
6989 enabled sab_filter          && prepend avfilter_deps "swscale"
6990 enabled scale_filter    && prepend avfilter_deps "swscale"
6991 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6992 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6993 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6994 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6995 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6996 enabled signature_filter    && prepend avfilter_deps "avcodec avformat"
6997 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6998 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6999 enabled spp_filter          && prepend avfilter_deps "avcodec"
7000 enabled sr_filter           && prepend avfilter_deps "avformat swscale"
7001 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
7002 enabled uspp_filter         && prepend avfilter_deps "avcodec"
7003 enabled zoompan_filter      && prepend avfilter_deps "swscale"
7004
7005 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
7006
7007 #FIXME
7008 enabled_any sdl2_outdev opengl_outdev && enabled sdl2 &&
7009     add_cflags $(filter_out '-Dmain=SDL_main' $sdl2_cflags)
7010
7011 enabled opus_decoder    && prepend avcodec_deps "swresample"
7012
7013 # reorder the items at var $1 to align with the items order at var $2 .
7014 # die if an item at $1 is not at $2 .
7015 reorder_by(){
7016     eval rb_in=\$$1
7017     eval rb_ordered=\$$2
7018
7019     for rb in $rb_in; do
7020         is_in $rb $rb_ordered || die "$rb at \$$1 is not at \$$2"
7021     done
7022
7023     rb_out=
7024     for rb in $rb_ordered; do
7025         is_in $rb $rb_in && rb_out="$rb_out$rb "
7026     done
7027     eval $1=\$rb_out
7028 }
7029
7030 # deps-expand fflib $1:  N x {append all expanded deps; unique}
7031 # within a set of N items, N expansions are enough to expose a cycle.
7032 expand_deps(){
7033     unique ${1}_deps  # required for the early break test.
7034     for dummy in $LIBRARY_LIST; do  # N iteratios
7035         eval deps=\$${1}_deps
7036         append ${1}_deps $(map 'eval echo \$${v}_deps' $deps)
7037         unique ${1}_deps
7038         eval '[ ${#deps} = ${#'${1}_deps'} ]' && break  # doesn't expand anymore
7039     done
7040
7041     eval is_in $1 \$${1}_deps && die "Dependency cycle at ${1}_deps"
7042     reorder_by ${1}_deps LIBRARY_LIST  # linking order is expected later
7043 }
7044
7045 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
7046 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
7047
7048 map 'expand_deps $v' $LIBRARY_LIST
7049
7050 if test "$quiet" != "yes"; then
7051
7052 echo "install prefix            $prefix"
7053 echo "source path               $source_path"
7054 echo "C compiler                $cc"
7055 echo "C library                 $libc_type"
7056 if test "$host_cc" != "$cc"; then
7057     echo "host C compiler           $host_cc"
7058     echo "host C library            $host_libc_type"
7059 fi
7060 echo "ARCH                      $arch ($cpu)"
7061 if test "$build_suffix" != ""; then
7062     echo "build suffix              $build_suffix"
7063 fi
7064 if test "$progs_suffix" != ""; then
7065     echo "progs suffix              $progs_suffix"
7066 fi
7067 if test "$extra_version" != ""; then
7068     echo "version string suffix     $extra_version"
7069 fi
7070 echo "big-endian                ${bigendian-no}"
7071 echo "runtime cpu detection     ${runtime_cpudetect-no}"
7072 if enabled x86; then
7073     echo "standalone assembly       ${x86asm-no}"
7074     echo "x86 assembler             ${x86asmexe}"
7075     echo "MMX enabled               ${mmx-no}"
7076     echo "MMXEXT enabled            ${mmxext-no}"
7077     echo "3DNow! enabled            ${amd3dnow-no}"
7078     echo "3DNow! extended enabled   ${amd3dnowext-no}"
7079     echo "SSE enabled               ${sse-no}"
7080     echo "SSSE3 enabled             ${ssse3-no}"
7081     echo "AESNI enabled             ${aesni-no}"
7082     echo "AVX enabled               ${avx-no}"
7083     echo "AVX2 enabled              ${avx2-no}"
7084     echo "AVX-512 enabled           ${avx512-no}"
7085     echo "XOP enabled               ${xop-no}"
7086     echo "FMA3 enabled              ${fma3-no}"
7087     echo "FMA4 enabled              ${fma4-no}"
7088     echo "i686 features enabled     ${i686-no}"
7089     echo "CMOV is fast              ${fast_cmov-no}"
7090     echo "EBX available             ${ebx_available-no}"
7091     echo "EBP available             ${ebp_available-no}"
7092 fi
7093 if enabled aarch64; then
7094     echo "NEON enabled              ${neon-no}"
7095     echo "VFP enabled               ${vfp-no}"
7096 fi
7097 if enabled arm; then
7098     echo "ARMv5TE enabled           ${armv5te-no}"
7099     echo "ARMv6 enabled             ${armv6-no}"
7100     echo "ARMv6T2 enabled           ${armv6t2-no}"
7101     echo "VFP enabled               ${vfp-no}"
7102     echo "NEON enabled              ${neon-no}"
7103     echo "THUMB enabled             ${thumb-no}"
7104 fi
7105 if enabled mips; then
7106     echo "MIPS FPU enabled          ${mipsfpu-no}"
7107     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
7108     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
7109     echo "MIPS MSA enabled          ${msa-no}"
7110     echo "LOONGSON MMI enabled      ${mmi-no}"
7111 fi
7112 if enabled ppc; then
7113     echo "AltiVec enabled           ${altivec-no}"
7114     echo "VSX enabled               ${vsx-no}"
7115     echo "POWER8 enabled            ${power8-no}"
7116     echo "PPC 4xx optimizations     ${ppc4xx-no}"
7117     echo "dcbzl available           ${dcbzl-no}"
7118 fi
7119 echo "debug symbols             ${debug-no}"
7120 echo "strip symbols             ${stripping-no}"
7121 echo "optimize for size         ${small-no}"
7122 echo "optimizations             ${optimizations-no}"
7123 echo "static                    ${static-no}"
7124 echo "shared                    ${shared-no}"
7125 echo "postprocessing support    ${postproc-no}"
7126 echo "network support           ${network-no}"
7127 echo "threading support         ${thread_type-no}"
7128 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
7129 echo "texi2html enabled         ${texi2html-no}"
7130 echo "perl enabled              ${perl-no}"
7131 echo "pod2man enabled           ${pod2man-no}"
7132 echo "makeinfo enabled          ${makeinfo-no}"
7133 echo "makeinfo supports HTML    ${makeinfo_html-no}"
7134 test -n "$random_seed" &&
7135     echo "random seed               ${random_seed}"
7136 echo
7137
7138 echo "External libraries:"
7139 print_enabled '' $EXTERNAL_LIBRARY_LIST $EXTERNAL_AUTODETECT_LIBRARY_LIST | print_in_columns
7140 echo
7141
7142 echo "External libraries providing hardware acceleration:"
7143 print_enabled '' $HWACCEL_LIBRARY_LIST $HWACCEL_AUTODETECT_LIBRARY_LIST | print_in_columns
7144 echo
7145
7146 echo "Libraries:"
7147 print_enabled '' $LIBRARY_LIST | print_in_columns
7148 echo
7149
7150 echo "Programs:"
7151 print_enabled '' $PROGRAM_LIST | print_in_columns
7152 echo
7153
7154 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
7155     echo "Enabled ${type}s:"
7156     eval list=\$$(toupper $type)_LIST
7157     print_enabled '_*' $list | print_in_columns
7158     echo
7159 done
7160
7161 if test -n "$ignore_tests"; then
7162     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
7163     echo "Ignored FATE tests:"
7164     echo $ignore_tests | print_in_columns
7165     echo
7166 fi
7167
7168 echo "License: $license"
7169
7170 fi # test "$quiet" != "yes"
7171
7172 if test -n "$WARN_IF_GETS_DISABLED_LIST"; then
7173     for cfg in $WARN_IF_GETS_DISABLED_LIST; do
7174         if disabled $cfg; then
7175             varname=${cfg}_disable_reason
7176             eval "warn \"Disabled $cfg because \$$varname\""
7177         fi
7178     done
7179 fi
7180
7181 if test -n "$WARNINGS"; then
7182     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
7183     enabled fatal_warnings && exit 1
7184 fi
7185
7186 test -e Makefile || echo "include $source_path/Makefile" > Makefile
7187
7188 esc(){
7189     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
7190 }
7191
7192 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" > ffbuild/config.fate
7193
7194 enabled stripping || strip="echo skipping strip"
7195 enabled stripping || striptype=""
7196
7197 config_files="$TMPH ffbuild/config.mak doc/config.texi"
7198
7199 cat > ffbuild/config.mak <<EOF
7200 # Automatically generated by configure - do not modify!
7201 ifndef FFMPEG_CONFIG_MAK
7202 FFMPEG_CONFIG_MAK=1
7203 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
7204 prefix=$prefix
7205 LIBDIR=\$(DESTDIR)$libdir
7206 SHLIBDIR=\$(DESTDIR)$shlibdir
7207 INCDIR=\$(DESTDIR)$incdir
7208 BINDIR=\$(DESTDIR)$bindir
7209 DATADIR=\$(DESTDIR)$datadir
7210 DOCDIR=\$(DESTDIR)$docdir
7211 MANDIR=\$(DESTDIR)$mandir
7212 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
7213 INSTALL_NAME_DIR=$install_name_dir
7214 SRC_PATH=$source_path
7215 SRC_LINK=$source_link
7216 ifndef MAIN_MAKEFILE
7217 SRC_PATH:=\$(SRC_PATH:.%=..%)
7218 endif
7219 CC_IDENT=$cc_ident
7220 ARCH=$arch
7221 INTRINSICS=$intrinsics
7222 EXTERN_PREFIX=$extern_prefix
7223 CC=$cc
7224 CXX=$cxx
7225 AS=$as
7226 OBJCC=$objcc
7227 LD=$ld
7228 DEPCC=$dep_cc
7229 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
7230 DEPAS=$as
7231 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
7232 X86ASM=$x86asmexe
7233 DEPX86ASM=$x86asmexe
7234 DEPX86ASMFLAGS=\$(X86ASMFLAGS)
7235 AR=$ar
7236 ARFLAGS=$arflags
7237 AR_O=$ar_o
7238 AR_CMD=$ar
7239 NM_CMD=$nm
7240 RANLIB=$ranlib
7241 STRIP=$strip
7242 STRIPTYPE=$striptype
7243 NVCC=$nvcc
7244 CP=cp -p
7245 LN_S=$ln_s
7246 CPPFLAGS=$CPPFLAGS
7247 CFLAGS=$CFLAGS
7248 CXXFLAGS=$CXXFLAGS
7249 OBJCFLAGS=$OBJCFLAGS
7250 ASFLAGS=$ASFLAGS
7251 NVCCFLAGS=$nvccflags
7252 AS_C=$AS_C
7253 AS_O=$AS_O
7254 OBJCC_C=$OBJCC_C
7255 OBJCC_E=$OBJCC_E
7256 OBJCC_O=$OBJCC_O
7257 CC_C=$CC_C
7258 CC_E=$CC_E
7259 CC_O=$CC_O
7260 CXX_C=$CXX_C
7261 CXX_O=$CXX_O
7262 NVCC_C=$NVCC_C
7263 NVCC_O=$NVCC_O
7264 LD_O=$LD_O
7265 X86ASM_O=$X86ASM_O
7266 LD_LIB=$LD_LIB
7267 LD_PATH=$LD_PATH
7268 DLLTOOL=$dlltool
7269 WINDRES=$windres
7270 DEPWINDRES=$dep_cc
7271 DOXYGEN=$doxygen
7272 LDFLAGS=$LDFLAGS
7273 LDEXEFLAGS=$LDEXEFLAGS
7274 LDSOFLAGS=$LDSOFLAGS
7275 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
7276 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
7277 X86ASMFLAGS=$X86ASMFLAGS
7278 BUILDSUF=$build_suffix
7279 PROGSSUF=$progs_suffix
7280 FULLNAME=$FULLNAME
7281 LIBPREF=$LIBPREF
7282 LIBSUF=$LIBSUF
7283 LIBNAME=$LIBNAME
7284 SLIBPREF=$SLIBPREF
7285 SLIBSUF=$SLIBSUF
7286 EXESUF=$EXESUF
7287 EXTRA_VERSION=$extra_version
7288 CCDEP=$CCDEP
7289 CXXDEP=$CXXDEP
7290 CCDEP_FLAGS=$CCDEP_FLAGS
7291 ASDEP=$ASDEP
7292 ASDEP_FLAGS=$ASDEP_FLAGS
7293 X86ASMDEP=$X86ASMDEP
7294 X86ASMDEP_FLAGS=$X86ASMDEP_FLAGS
7295 CC_DEPFLAGS=$CC_DEPFLAGS
7296 AS_DEPFLAGS=$AS_DEPFLAGS
7297 X86ASM_DEPFLAGS=$X86ASM_DEPFLAGS
7298 HOSTCC=$host_cc
7299 HOSTLD=$host_ld
7300 HOSTCFLAGS=$host_cflags
7301 HOSTCPPFLAGS=$host_cppflags
7302 HOSTEXESUF=$HOSTEXESUF
7303 HOSTLDFLAGS=$host_ldflags
7304 HOSTEXTRALIBS=$host_extralibs
7305 DEPHOSTCC=$host_cc
7306 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
7307 HOSTCCDEP=$HOSTCCDEP
7308 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
7309 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
7310 HOSTCC_C=$HOSTCC_C
7311 HOSTCC_O=$HOSTCC_O
7312 HOSTLD_O=$HOSTLD_O
7313 TARGET_EXEC=$target_exec $target_exec_args
7314 TARGET_PATH=$target_path
7315 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
7316 CFLAGS-ffplay=${sdl2_cflags}
7317 CFLAGS_HEADERS=$CFLAGS_HEADERS
7318 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
7319 EXTRALIBS=$extralibs
7320 COMPAT_OBJS=$compat_objs
7321 INSTALL=$install
7322 LIBTARGET=${LIBTARGET}
7323 SLIBNAME=${SLIBNAME}
7324 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
7325 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
7326 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
7327 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
7328 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
7329 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
7330 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
7331 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
7332 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
7333 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
7334 NOREDZONE_FLAGS=$noredzone_flags
7335 LIBFUZZER_PATH=$libfuzzer_path
7336 IGNORE_TESTS=$ignore_tests
7337 EOF
7338
7339 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> ffbuild/config.mak' $LIBRARY_LIST
7340
7341 for entry in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
7342     eval echo "EXTRALIBS-${entry}=\$${entry}_extralibs" >> ffbuild/config.mak
7343 done
7344
7345 cat > $TMPH <<EOF
7346 /* Automatically generated by configure - do not modify! */
7347 #ifndef FFMPEG_CONFIG_H
7348 #define FFMPEG_CONFIG_H
7349 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
7350 #define FFMPEG_LICENSE "$(c_escape $license)"
7351 #define CONFIG_THIS_YEAR 2019
7352 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
7353 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
7354 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
7355 #define av_restrict $restrict_keyword
7356 #define EXTERN_PREFIX "${extern_prefix}"
7357 #define EXTERN_ASM ${extern_prefix}
7358 #define BUILDSUF "$build_suffix"
7359 #define SLIBSUF "$SLIBSUF"
7360 #define HAVE_MMX2 HAVE_MMXEXT
7361 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
7362 EOF
7363
7364 test -n "$assert_level" &&
7365     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
7366
7367 test -n "$malloc_prefix" &&
7368     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
7369
7370 if enabled x86asm; then
7371     append config_files $TMPASM
7372     cat > $TMPASM <<EOF
7373 ; Automatically generated by configure - do not modify!
7374 EOF
7375 fi
7376
7377 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
7378
7379
7380 mkdir -p doc
7381 mkdir -p tests
7382 mkdir -p tests/api
7383 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
7384
7385 print_config ARCH_   "$config_files" $ARCH_LIST
7386 print_config HAVE_   "$config_files" $HAVE_LIST
7387 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
7388                                      $CONFIG_EXTRA      \
7389                                      $ALL_COMPONENTS    \
7390
7391 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
7392 echo "endif # FFMPEG_CONFIG_MAK" >> ffbuild/config.mak
7393
7394 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
7395 cp_if_changed $TMPH config.h
7396 touch ffbuild/.config
7397
7398 enabled x86asm && cp_if_changed $TMPASM config.asm
7399
7400 cat > $TMPH <<EOF
7401 /* Generated by ffmpeg configure */
7402 #ifndef AVUTIL_AVCONFIG_H
7403 #define AVUTIL_AVCONFIG_H
7404 EOF
7405
7406 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
7407
7408 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
7409
7410 cp_if_changed $TMPH libavutil/avconfig.h
7411
7412 # full_filter_name_foo=vf_foo
7413 # full_filter_name_bar=asrc_bar
7414 # ...
7415 eval "$(sed -n "s/^extern AVFilter ff_\([avfsinkrc]\{2,5\}\)_\(.*\);/full_filter_name_\2=\1_\2/p" $source_path/libavfilter/allfilters.c)"
7416
7417 # generate the lists of enabled components
7418 print_enabled_components(){
7419     file=$1
7420     struct_name=$2
7421     name=$3
7422     shift 3
7423     echo "static const $struct_name * const $name[] = {" > $TMPH
7424     for c in $*; do
7425         if enabled $c; then
7426             case $name in
7427                 filter_list)
7428                     eval c=\$full_filter_name_${c%_filter}
7429                 ;;
7430                 indev_list)
7431                     c=${c%_indev}_demuxer
7432                 ;;
7433                 outdev_list)
7434                     c=${c%_outdev}_muxer
7435                 ;;
7436             esac
7437             printf "    &ff_%s,\n" $c >> $TMPH
7438         fi
7439     done
7440     if [ "$name" = "filter_list" ]; then
7441         for c in asrc_abuffer vsrc_buffer asink_abuffer vsink_buffer; do
7442             printf "    &ff_%s,\n" $c >> $TMPH
7443         done
7444     fi
7445     echo "    NULL };" >> $TMPH
7446     cp_if_changed $TMPH $file
7447 }
7448
7449 print_enabled_components libavfilter/filter_list.c AVFilter filter_list $FILTER_LIST
7450 print_enabled_components libavcodec/codec_list.c AVCodec codec_list $CODEC_LIST
7451 print_enabled_components libavcodec/parser_list.c AVCodecParser parser_list $PARSER_LIST
7452 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
7453 print_enabled_components libavformat/demuxer_list.c AVInputFormat demuxer_list $DEMUXER_LIST
7454 print_enabled_components libavformat/muxer_list.c AVOutputFormat muxer_list $MUXER_LIST
7455 print_enabled_components libavdevice/indev_list.c AVInputFormat indev_list $INDEV_LIST
7456 print_enabled_components libavdevice/outdev_list.c AVOutputFormat outdev_list $OUTDEV_LIST
7457 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
7458
7459 # Settings for pkg-config files
7460
7461 cat > $TMPH <<EOF
7462 # Automatically generated by configure - do not modify!
7463 shared=$shared
7464 build_suffix=$build_suffix
7465 prefix=$prefix
7466 libdir=$libdir
7467 incdir=$incdir
7468 rpath=$(enabled rpath && echo "-Wl,-rpath,\${libdir}")
7469 source_path=${source_path}
7470 LIBPREF=${LIBPREF}
7471 LIBSUF=${LIBSUF}
7472 extralibs_avutil="$avutil_extralibs"
7473 extralibs_avcodec="$avcodec_extralibs"
7474 extralibs_avformat="$avformat_extralibs"
7475 extralibs_avdevice="$avdevice_extralibs"
7476 extralibs_avfilter="$avfilter_extralibs"
7477 extralibs_avresample="$avresample_extralibs"
7478 extralibs_postproc="$postproc_extralibs"
7479 extralibs_swscale="$swscale_extralibs"
7480 extralibs_swresample="$swresample_extralibs"
7481 EOF
7482
7483 for lib in $LIBRARY_LIST; do
7484     lib_deps="$(eval echo \$${lib}_deps)"
7485     echo ${lib}_deps=\"$lib_deps\" >> $TMPH
7486 done
7487
7488 cp_if_changed $TMPH ffbuild/config.sh