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

   1 #!/bin/sh
   2 #
   3 # FFmpeg configure script
   4 #
   5 # Copyright (c) 2000-2002 Fabrice Bellard
   6 # Copyright (c) 2005-2008 Diego Biurrun
   7 # Copyright (c) 2005-2008 Mans Rullgard
   8 #
   9
  10 # Prevent locale nonsense from breaking basic text processing.
  11 LC_ALL=C
  12 export LC_ALL
  13
  14 # make sure we are running under a compatible shell
  15 # try to make this part work with most shells
  16
  17 try_exec(){
  18     echo "Trying shell $1"
  19     type "$1" > /dev/null 2>&1 && exec "$@"
  20 }
  21
  22 unset foo
  23 (: ${foo%%bar}) 2> /dev/null
  24 E1="$?"
  25
  26 (: ${foo?}) 2> /dev/null
  27 E2="$?"
  28
  29 if test "$E1" != 0 || test "$E2" = 0; then
  30     echo "Broken shell detected.  Trying alternatives."
  31     export FF_CONF_EXEC
  32     if test "0$FF_CONF_EXEC" -lt 1; then
  33         FF_CONF_EXEC=1
  34         try_exec bash "$0" "$@"
  35     fi
  36     if test "0$FF_CONF_EXEC" -lt 2; then
  37         FF_CONF_EXEC=2
  38         try_exec ksh "$0" "$@"
  39     fi
  40     if test "0$FF_CONF_EXEC" -lt 3; then
  41         FF_CONF_EXEC=3
  42         try_exec /usr/xpg4/bin/sh "$0" "$@"
  43     fi
  44     echo "No compatible shell script interpreter found."
  45     echo "This configure script requires a POSIX-compatible shell"
  46     echo "such as bash or ksh."
  47     echo "THIS IS NOT A BUG IN FFMPEG, DO NOT REPORT IT AS SUCH."
  48     echo "Instead, install a working POSIX-compatible shell."
  49     echo "Disabling this configure test will create a broken FFmpeg."
  50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
  51         echo "This bash version ($BASH_VERSION) is broken on your platform."
  52         echo "Upgrade to a later version if available."
  53     fi
  54     exit 1
  55 fi
  56
  57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
  58
  59 show_help(){
  60     cat <<EOF
  61 Usage: configure [options]
  62 Options: [defaults in brackets after descriptions]
  63
  64 Help options:
  65   --help                   print this message
  66   --quiet                  Suppress showing informative output
  67   --list-decoders          show all available decoders
  68   --list-encoders          show all available encoders
  69   --list-hwaccels          show all available hardware accelerators
  70   --list-demuxers          show all available demuxers
  71   --list-muxers            show all available muxers
  72   --list-parsers           show all available parsers
  73   --list-protocols         show all available protocols
  74   --list-bsfs              show all available bitstream filters
  75   --list-indevs            show all available input devices
  76   --list-outdevs           show all available output devices
  77   --list-filters           show all available filters
  78
  79 Standard options:
  80   --logfile=FILE           log tests and output to FILE [ffbuild/config.log]
  81   --disable-logging        do not log configure debug information
  82   --fatal-warnings         fail if any configure warning is generated
  83   --prefix=PREFIX          install in PREFIX [$prefix_default]
  84   --bindir=DIR             install binaries in DIR [PREFIX/bin]
  85   --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
  86   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/ffmpeg]
  87   --libdir=DIR             install libs in DIR [PREFIX/lib]
  88   --shlibdir=DIR           install shared libs in DIR [LIBDIR]
  89   --incdir=DIR             install includes in DIR [PREFIX/include]
  90   --mandir=DIR             install man page in DIR [PREFIX/share/man]
  91   --pkgconfigdir=DIR       install pkg-config files in DIR [LIBDIR/pkgconfig]
  92   --enable-rpath           use rpath to allow installing libraries in paths
  93                            not part of the dynamic linker search path
  94                            use rpath when linking programs (USE WITH CARE)
  95   --install-name-dir=DIR   Darwin directory name for installed targets
  96
  97 Licensing options:
  98   --enable-gpl             allow use of GPL code, the resulting libs
  99                            and binaries will be under GPL [no]
 100   --enable-version3        upgrade (L)GPL to version 3 [no]
 101   --enable-nonfree         allow use of nonfree code, the resulting libs
 102                            and binaries will be unredistributable [no]
 103
 104 Configuration options:
 105   --disable-static         do not build static libraries [no]
 106   --enable-shared          build shared libraries [no]
 107   --enable-small           optimize for size instead of speed
 108   --disable-runtime-cpudetect disable detecting CPU capabilities at runtime (smaller binary)
 109   --enable-gray            enable full grayscale support (slower color)
 110   --disable-swscale-alpha  disable alpha channel support in swscale
 111   --disable-all            disable building components, libraries and programs
 112   --disable-autodetect     disable automatically detected external libraries [no]
 113
 114 Program options:
 115   --disable-programs       do not build command line programs
 116   --disable-ffmpeg         disable ffmpeg build
 117   --disable-ffplay         disable ffplay build
 118   --disable-ffprobe        disable ffprobe build
 119
 120 Documentation options:
 121   --disable-doc            do not build documentation
 122   --disable-htmlpages      do not build HTML documentation pages
 123   --disable-manpages       do not build man documentation pages
 124   --disable-podpages       do not build POD documentation pages
 125   --disable-txtpages       do not build text documentation pages
 126
 127 Component options:
 128   --disable-avdevice       disable libavdevice build
 129   --disable-avcodec        disable libavcodec build
 130   --disable-avformat       disable libavformat build
 131   --disable-swresample     disable libswresample build
 132   --disable-swscale        disable libswscale build
 133   --disable-postproc       disable libpostproc build
 134   --disable-avfilter       disable libavfilter build
 135   --enable-avresample      enable libavresample build (deprecated) [no]
 136   --disable-pthreads       disable pthreads [autodetect]
 137   --disable-w32threads     disable Win32 threads [autodetect]
 138   --disable-os2threads     disable OS/2 threads [autodetect]
 139   --disable-network        disable network support [no]
 140   --disable-dct            disable DCT code
 141   --disable-dwt            disable DWT code
 142   --disable-error-resilience disable error resilience code
 143   --disable-lsp            disable LSP code
 144   --disable-lzo            disable LZO decoder code
 145   --disable-mdct           disable MDCT code
 146   --disable-rdft           disable RDFT code
 147   --disable-fft            disable FFT code
 148   --disable-faan           disable floating point AAN (I)DCT code
 149   --disable-pixelutils     disable pixel utils in libavutil
 150
 151 Individual component options:
 152   --disable-everything     disable all components listed below
 153   --disable-encoder=NAME   disable encoder NAME
 154   --enable-encoder=NAME    enable encoder NAME
 155   --disable-encoders       disable all encoders
 156   --disable-decoder=NAME   disable decoder NAME
 157   --enable-decoder=NAME    enable decoder NAME
 158   --disable-decoders       disable all decoders
 159   --disable-hwaccel=NAME   disable hwaccel NAME
 160   --enable-hwaccel=NAME    enable hwaccel NAME
 161   --disable-hwaccels       disable all hwaccels
 162   --disable-muxer=NAME     disable muxer NAME
 163   --enable-muxer=NAME      enable muxer NAME
 164   --disable-muxers         disable all muxers
 165   --disable-demuxer=NAME   disable demuxer NAME
 166   --enable-demuxer=NAME    enable demuxer NAME
 167   --disable-demuxers       disable all demuxers
 168   --enable-parser=NAME     enable parser NAME
 169   --disable-parser=NAME    disable parser NAME
 170   --disable-parsers        disable all parsers
 171   --enable-bsf=NAME        enable bitstream filter NAME
 172   --disable-bsf=NAME       disable bitstream filter NAME
 173   --disable-bsfs           disable all bitstream filters
 174   --enable-protocol=NAME   enable protocol NAME
 175   --disable-protocol=NAME  disable protocol NAME
 176   --disable-protocols      disable all protocols
 177   --enable-indev=NAME      enable input device NAME
 178   --disable-indev=NAME     disable input device NAME
 179   --disable-indevs         disable input devices
 180   --enable-outdev=NAME     enable output device NAME
 181   --disable-outdev=NAME    disable output device NAME
 182   --disable-outdevs        disable output devices
 183   --disable-devices        disable all devices
 184   --enable-filter=NAME     enable filter NAME
 185   --disable-filter=NAME    disable filter NAME
 186   --disable-filters        disable all filters
 187
 188 External library support:
 189
 190   Using any of the following switches will allow FFmpeg to link to the
 191   corresponding external library. All the components depending on that library
 192   will become enabled, if all their other dependencies are met and they are not
 193   explicitly disabled. E.g. --enable-libwavpack will enable linking to
 194   libwavpack and allow the libwavpack encoder to be built, unless it is
 195   specifically disabled with --disable-encoder=libwavpack.
 196
 197   Note that only the system libraries are auto-detected. All the other external
 198   libraries must be explicitly enabled.
 199
 200   Also note that the following help text describes the purpose of the libraries
 201   themselves, not all their features will necessarily be usable by FFmpeg.
 202
 203   --disable-alsa           disable ALSA support [autodetect]
 204   --disable-appkit         disable Apple AppKit framework [autodetect]
 205   --disable-avfoundation   disable Apple AVFoundation framework [autodetect]
 206   --enable-avisynth        enable reading of AviSynth script files [no]
 207   --disable-bzlib          disable bzlib [autodetect]
 208   --disable-coreimage      disable Apple CoreImage framework [autodetect]
 209   --enable-chromaprint     enable audio fingerprinting with chromaprint [no]
 210   --enable-frei0r          enable frei0r video filtering [no]
 211   --enable-gcrypt          enable gcrypt, needed for rtmp(t)e support
 212                            if openssl, librtmp or gmp is not used [no]
 213   --enable-gmp             enable gmp, needed for rtmp(t)e support
 214                            if openssl or librtmp is not used [no]
 215   --enable-gnutls          enable gnutls, needed for https support
 216                            if openssl, libtls or mbedtls is not used [no]
 217   --disable-iconv          disable iconv [autodetect]
 218   --enable-jni             enable JNI support [no]
 219   --enable-ladspa          enable LADSPA audio filtering [no]
 220   --enable-libaom          enable AV1 video encoding/decoding via libaom [no]
 221   --enable-libaribb24      enable ARIB text and caption decoding via libaribb24 [no]
 222   --enable-libass          enable libass subtitles rendering,
 223                            needed for subtitles and ass filter [no]
 224   --enable-libbluray       enable BluRay reading using libbluray [no]
 225   --enable-libbs2b         enable bs2b DSP library [no]
 226   --enable-libcaca         enable textual display using libcaca [no]
 227   --enable-libcelt         enable CELT decoding via libcelt [no]
 228   --enable-libcdio         enable audio CD grabbing with libcdio [no]
 229   --enable-libcodec2       enable codec2 en/decoding using libcodec2 [no]
 230   --enable-libdav1d        enable AV1 decoding via libdav1d [no]
 231   --enable-libdavs2        enable AVS2 decoding via libdavs2 [no]
 232   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 233                            and libraw1394 [no]
 234   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
 235   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
 236   --enable-libfontconfig   enable libfontconfig, useful for drawtext filter [no]
 237   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
 238   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
 239   --enable-libgme          enable Game Music Emu via libgme [no]
 240   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 241   --enable-libiec61883     enable iec61883 via libiec61883 [no]
 242   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 243   --enable-libjack         enable JACK audio sound server [no]
 244   --enable-libklvanc       enable Kernel Labs VANC processing [no]
 245   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
 246   --enable-liblensfun      enable lensfun lens correction [no]
 247   --enable-libmodplug      enable ModPlug via libmodplug [no]
 248   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 249   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 250   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 251   --enable-libopencv       enable video filtering via libopencv [no]
 252   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
 253   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 254   --enable-libopenmpt      enable decoding tracked files via libopenmpt [no]
 255   --enable-libopus         enable Opus de/encoding via libopus [no]
 256   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 257   --enable-librsvg         enable SVG rasterization via librsvg [no]
 258   --enable-librubberband   enable rubberband needed for rubberband filter [no]
 259   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 260   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 261   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
 262   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
 263   --enable-libsoxr         enable Include libsoxr resampling [no]
 264   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 265   --enable-libsrt          enable Haivision SRT protocol via libsrt [no]
 266   --enable-libssh          enable SFTP protocol via libssh [no]
 267   --enable-libtensorflow   enable TensorFlow as a DNN module backend
 268                            for DNN based filters like sr [no]
 269   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
 270   --enable-libtheora       enable Theora encoding via libtheora [no]
 271   --enable-libtls          enable LibreSSL (via libtls), needed for https support
 272                            if openssl, gnutls or mbedtls is not used [no]
 273   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 274   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 275   --enable-libvidstab      enable video stabilization using vid.stab [no]
 276   --enable-libvmaf         enable vmaf filter via libvmaf [no]
 277   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 278   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 279                            native implementation exists [no]
 280   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 281   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 282   --enable-libwebp         enable WebP encoding via libwebp [no]
 283   --enable-libx264         enable H.264 encoding via x264 [no]
 284   --enable-libx265         enable HEVC encoding via x265 [no]
 285   --enable-libxavs         enable AVS encoding via xavs [no]
 286   --enable-libxavs2        enable AVS2 encoding via xavs2 [no]
 287   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
 288   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
 289   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
 290   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
 291   --enable-libxvid         enable Xvid encoding via xvidcore,
 292                            native MPEG-4/Xvid encoder exists [no]
 293   --enable-libxml2         enable XML parsing using the C library libxml2, needed
 294                            for dash demuxing support [no]
 295   --enable-libzimg         enable z.lib, needed for zscale filter [no]
 296   --enable-libzmq          enable message passing via libzmq [no]
 297   --enable-libzvbi         enable teletext support via libzvbi [no]
 298   --enable-lv2             enable LV2 audio filtering [no]
 299   --disable-lzma           disable lzma [autodetect]
 300   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
 301   --enable-mbedtls         enable mbedTLS, needed for https support
 302                            if openssl, gnutls or libtls is not used [no]
 303   --enable-mediacodec      enable Android MediaCodec support [no]
 304   --enable-libmysofa       enable libmysofa, needed for sofalizer filter [no]
 305   --enable-openal          enable OpenAL 1.1 capture support [no]
 306   --enable-opencl          enable OpenCL processing [no]
 307   --enable-opengl          enable OpenGL rendering [no]
 308   --enable-openssl         enable openssl, needed for https support
 309                            if gnutls, libtls or mbedtls is not used [no]
 310   --enable-pocketsphinx    enable PocketSphinx, needed for asr filter [no]
 311   --disable-sndio          disable sndio support [autodetect]
 312   --disable-schannel       disable SChannel SSP, needed for TLS support on
 313                            Windows if openssl and gnutls are not used [autodetect]
 314   --disable-sdl2           disable sdl2 [autodetect]
 315   --disable-securetransport disable Secure Transport, needed for TLS support
 316                            on OSX if openssl and gnutls are not used [autodetect]
 317   --enable-vapoursynth     enable VapourSynth demuxer [no]
 318   --disable-xlib           disable xlib [autodetect]
 319   --disable-zlib           disable zlib [autodetect]
 320
 321   The following libraries provide various hardware acceleration features:
 322   --disable-amf            disable AMF video encoding code [autodetect]
 323   --disable-audiotoolbox   disable Apple AudioToolbox code [autodetect]
 324   --enable-cuda-nvcc       enable Nvidia CUDA compiler [no]
 325   --disable-cuda-llvm      disable CUDA compilation using clang [autodetect]
 326   --disable-cuvid          disable Nvidia CUVID support [autodetect]
 327   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
 328   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
 329   --disable-ffnvcodec      disable dynamically linked Nvidia code [autodetect]
 330   --enable-libdrm          enable DRM code (Linux) [no]
 331   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
 332   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
 333   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
 334   --disable-nvdec          disable Nvidia video decoding acceleration (via hwaccel) [autodetect]
 335   --disable-nvenc          disable Nvidia video encoding code [autodetect]
 336   --enable-omx             enable OpenMAX IL code [no]
 337   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
 338   --enable-rkmpp           enable Rockchip Media Process Platform code [no]
 339   --disable-v4l2-m2m       disable V4L2 mem2mem code [autodetect]
 340   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
 341   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
 342   --disable-videotoolbox   disable VideoToolbox code [autodetect]
 343
 344 Toolchain options:
 345   --arch=ARCH              select architecture [$arch]
 346   --cpu=CPU                select the minimum required CPU (affects
 347                            instruction selection, may crash on older CPUs)
 348   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 349   --progs-suffix=SUFFIX    program name suffix []
 350   --enable-cross-compile   assume a cross-compiler is used
 351   --sysroot=PATH           root of cross-build tree
 352   --sysinclude=PATH        location of cross-build system headers
 353   --target-os=OS           compiler targets OS [$target_os]
 354   --target-exec=CMD        command to run executables on target
 355   --target-path=DIR        path to view of build directory on target
 356   --target-samples=DIR     path to samples directory on target
 357   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 358   --toolchain=NAME         set tool defaults according to NAME
 359                            (gcc-asan, clang-asan, gcc-msan, clang-msan,
 360                            gcc-tsan, clang-tsan, gcc-usan, clang-usan,
 361                            valgrind-massif, valgrind-memcheck,
 362                            msvc, icl, gcov, llvm-cov, hardened)
 363   --nm=NM                  use nm tool NM [$nm_default]
 364   --ar=AR                  use archive tool AR [$ar_default]
 365   --as=AS                  use assembler AS [$as_default]
 366   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
 367   --strip=STRIP            use strip tool STRIP [$strip_default]
 368   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 369   --x86asmexe=EXE          use nasm-compatible assembler EXE [$x86asmexe_default]
 370   --cc=CC                  use C compiler CC [$cc_default]
 371   --cxx=CXX                use C compiler CXX [$cxx_default]
 372   --objcc=OCC              use ObjC compiler OCC [$cc_default]
 373   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 374   --nvcc=NVCC              use Nvidia CUDA compiler NVCC or clang [$nvcc_default]
 375   --ld=LD                  use linker LD [$ld_default]
 376   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 377   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 378   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 379   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
 380   --host-cc=HOSTCC         use host C compiler HOSTCC
 381   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 382   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 383   --host-ld=HOSTLD         use host linker HOSTLD
 384   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 385   --host-extralibs=HLIBS   use libs HLIBS when linking for host
 386   --host-os=OS             compiler host OS [$target_os]
 387   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 388   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 389   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
 390   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 391   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 392   --extra-ldsoflags=ELDFLAGS add ELDFLAGS to LDSOFLAGS [$LDSOFLAGS]
 393   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 394   --extra-version=STRING   version string suffix []
 395   --optflags=OPTFLAGS      override optimization-related compiler flags
 396   --nvccflags=NVCCFLAGS    override nvcc flags [$nvccflags_default]
 397   --build-suffix=SUFFIX    library name suffix []
 398   --enable-pic             build position-independent code
 399   --enable-thumb           compile for Thumb instruction set
 400   --enable-lto             use link-time optimization
 401   --env="ENV=override"     override the environment variables
 402
 403 Advanced options (experts only):
 404   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 405   --custom-allocator=NAME  use a supported custom allocator
 406   --disable-symver         disable symbol versioning
 407   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 408   --disable-safe-bitstream-reader
 409                            disable buffer boundary checking in bitreaders
 410                            (faster, but may crash)
 411   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
 412
 413 Optimization options (experts only):
 414   --disable-asm            disable all assembly optimizations
 415   --disable-altivec        disable AltiVec optimizations
 416   --disable-vsx            disable VSX optimizations
 417   --disable-power8         disable POWER8 optimizations
 418   --disable-amd3dnow       disable 3DNow! optimizations
 419   --disable-amd3dnowext    disable 3DNow! extended optimizations
 420   --disable-mmx            disable MMX optimizations
 421   --disable-mmxext         disable MMXEXT optimizations
 422   --disable-sse            disable SSE optimizations
 423   --disable-sse2           disable SSE2 optimizations
 424   --disable-sse3           disable SSE3 optimizations
 425   --disable-ssse3          disable SSSE3 optimizations
 426   --disable-sse4           disable SSE4 optimizations
 427   --disable-sse42          disable SSE4.2 optimizations
 428   --disable-avx            disable AVX optimizations
 429   --disable-xop            disable XOP optimizations
 430   --disable-fma3           disable FMA3 optimizations
 431   --disable-fma4           disable FMA4 optimizations
 432   --disable-avx2           disable AVX2 optimizations
 433   --disable-avx512         disable AVX-512 optimizations
 434   --disable-aesni          disable AESNI optimizations
 435   --disable-armv5te        disable armv5te optimizations
 436   --disable-armv6          disable armv6 optimizations
 437   --disable-armv6t2        disable armv6t2 optimizations
 438   --disable-vfp            disable VFP optimizations
 439   --disable-neon           disable NEON optimizations
 440   --disable-inline-asm     disable use of inline assembly
 441   --disable-x86asm         disable use of standalone x86 assembly
 442   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
 443   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 444   --disable-msa            disable MSA optimizations
 445   --disable-msa2           disable MSA2 optimizations
 446   --disable-mipsfpu        disable floating point MIPS optimizations
 447   --disable-mmi            disable Loongson SIMD optimizations
 448   --disable-fast-unaligned consider unaligned accesses slow
 449
 450 Developer options (useful when working on FFmpeg itself):
 451   --disable-debug          disable debugging symbols
 452   --enable-debug=LEVEL     set the debug level [$debuglevel]
 453   --disable-optimizations  disable compiler optimizations
 454   --enable-extra-warnings  enable more compiler warnings
 455   --disable-stripping      disable stripping of executables and shared libraries
 456   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 457                            2 causes a slowdown at runtime.
 458   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 459   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 460                            leaks and errors, using the specified valgrind binary.
 461                            Cannot be combined with --target-exec
 462   --enable-ftrapv          Trap arithmetic overflows
 463   --samples=PATH           location of test samples for FATE, if not set use
 464                            \$FATE_SAMPLES at make invocation time.
 465   --enable-neon-clobber-test check NEON registers for clobbering (should be
 466                            used only for debugging purposes)
 467   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 468                            should be used only for debugging purposes)
 469   --enable-random          randomly enable/disable components
 470   --disable-random
 471   --enable-random=LIST     randomly enable/disable specific components or
 472   --disable-random=LIST    component groups. LIST is a comma-separated list
 473                            of NAME[:PROB] entries where NAME is a component
 474                            (group) and PROB the probability associated with
 475                            NAME (default 0.5).
 476   --random-seed=VALUE      seed value for --enable/disable-random
 477   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 478                            (only applies to --disable-optimizations builds)
 479   --enable-ossfuzz         Enable building fuzzer tool
 480   --libfuzzer=PATH         path to libfuzzer
 481   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
 482                            in the name) of tests whose result is ignored
 483   --enable-linux-perf      enable Linux Performance Monitor API
 484
 485 NOTE: Object files are built at the place where configure is launched.
 486 EOF
 487   exit 0
 488 }
 489
 490 if test -t 1 && which tput >/dev/null 2>&1; then
 491     ncolors=$(tput colors)
 492     if test -n "$ncolors" && test $ncolors -ge 8; then
 493         bold_color=$(tput bold)
 494         warn_color=$(tput setaf 3)
 495         error_color=$(tput setaf 1)
 496         reset_color=$(tput sgr0)
 497     fi
 498     # 72 used instead of 80 since that's the default of pr
 499     ncols=$(tput cols)
 500 fi
 501 : ${ncols:=72}
 502
 503 log(){
 504     echo "$@" >> $logfile
 505 }
 506
 507 log_file(){
 508     log BEGIN "$1"
 509     log_file_i=1
 510     while IFS= read -r log_file_line; do
 511         printf '%5d\t%s\n' "$log_file_i" "$log_file_line"
 512         log_file_i=$(($log_file_i+1))
 513     done < "$1" >> "$logfile"
 514     log END "$1"
 515 }
 516
 517 warn(){
 518     log "WARNING: $*"
 519     WARNINGS="${WARNINGS}WARNING: $*\n"
 520 }
 521
 522 die(){
 523     log "$@"
 524     echo "$error_color$bold_color$@$reset_color"
 525     cat <<EOF
 526
 527 If you think configure made a mistake, make sure you are using the latest
 528 version from Git.  If the latest version fails, report the problem to the
 529 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 530 EOF
 531     if disabled logging; then
 532         cat <<EOF
 533 Rerun configure with logging enabled (do not use --disable-logging), and
 534 include the log this produces with your report.
 535 EOF
 536     else
 537         cat <<EOF
 538 Include the log file "$logfile" produced by configure as this will help
 539 solve the problem.
 540 EOF
 541     fi
 542     exit 1
 543 }
 544
 545 # Avoid locale weirdness, besides we really just want to translate ASCII.
 546 toupper(){
 547     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 548 }
 549
 550 tolower(){
 551     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 552 }
 553
 554 c_escape(){
 555     echo "$*" | sed 's/["\\]/\\\0/g'
 556 }
 557
 558 sh_quote(){
 559     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 560     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 561     echo "$v"
 562 }
 563
 564 cleanws(){
 565     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
 566 }
 567
 568 filter(){
 569     pat=$1
 570     shift
 571     for v; do
 572         eval "case '$v' in $pat) printf '%s ' '$v' ;; esac"
 573     done
 574 }
 575
 576 filter_out(){
 577     pat=$1
 578     shift
 579     for v; do
 580         eval "case '$v' in $pat) ;; *) printf '%s ' '$v' ;; esac"
 581     done
 582 }
 583
 584 map(){
 585     m=$1
 586     shift
 587     for v; do eval $m; done
 588 }
 589
 590 add_suffix(){
 591     suffix=$1
 592     shift
 593     for v; do echo ${v}${suffix}; done
 594 }
 595
 596 remove_suffix(){
 597     suffix=$1
 598     shift
 599     for v; do echo ${v%$suffix}; done
 600 }
 601
 602 set_all(){
 603     value=$1
 604     shift
 605     for var in $*; do
 606         eval $var=$value
 607     done
 608 }
 609
 610 set_weak(){
 611     value=$1
 612     shift
 613     for var; do
 614         eval : \${$var:=$value}
 615     done
 616 }
 617
 618 sanitize_var_name(){
 619     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 620 }
 621
 622 set_sanitized(){
 623     var=$1
 624     shift
 625     eval $(sanitize_var_name "$var")='$*'
 626 }
 627
 628 get_sanitized(){
 629     eval echo \$$(sanitize_var_name "$1")
 630 }
 631
 632 pushvar(){
 633     for pvar in $*; do
 634         eval level=\${${pvar}_level:=0}
 635         eval ${pvar}_${level}="\$$pvar"
 636         eval ${pvar}_level=$(($level+1))
 637     done
 638 }
 639
 640 popvar(){
 641     for pvar in $*; do
 642         eval level=\${${pvar}_level:-0}
 643         test $level = 0 && continue
 644         eval level=$(($level-1))
 645         eval $pvar="\${${pvar}_${level}}"
 646         eval ${pvar}_level=$level
 647         eval unset ${pvar}_${level}
 648     done
 649 }
 650
 651 request(){
 652     for var in $*; do
 653         eval ${var}_requested=yes
 654         eval $var=
 655     done
 656 }
 657
 658 warn_if_gets_disabled(){
 659     for var in $*; do
 660         WARN_IF_GETS_DISABLED_LIST="$WARN_IF_GETS_DISABLED_LIST $var"
 661     done
 662 }
 663
 664 enable(){
 665     set_all yes $*
 666 }
 667
 668 disable(){
 669     set_all no $*
 670 }
 671
 672 disable_with_reason(){
 673     disable $1
 674     eval "${1}_disable_reason=\"$2\""
 675     if requested $1; then
 676         die "ERROR: $1 requested, but $2"
 677     fi
 678 }
 679
 680 enable_weak(){
 681     set_weak yes $*
 682 }
 683
 684 disable_weak(){
 685     set_weak no $*
 686 }
 687
 688 enable_sanitized(){
 689     for var; do
 690         enable $(sanitize_var_name $var)
 691     done
 692 }
 693
 694 disable_sanitized(){
 695     for var; do
 696         disable $(sanitize_var_name $var)
 697     done
 698 }
 699
 700 do_enable_deep(){
 701     for var; do
 702         enabled $var && continue
 703         set -- $var
 704         eval enable_deep \$${var}_select
 705         var=$1
 706         eval enable_deep_weak \$${var}_suggest
 707     done
 708 }
 709
 710 enable_deep(){
 711     do_enable_deep $*
 712     enable $*
 713 }
 714
 715 enable_deep_weak(){
 716     for var; do
 717         disabled $var && continue
 718         set -- $var
 719         do_enable_deep $var
 720         var=$1
 721         enable_weak $var
 722     done
 723 }
 724
 725 requested(){
 726     test "${1#!}" = "$1" && op="=" || op="!="
 727     eval test "x\$${1#!}_requested" $op "xyes"
 728 }
 729
 730 enabled(){
 731     test "${1#!}" = "$1" && op="=" || op="!="
 732     eval test "x\$${1#!}" $op "xyes"
 733 }
 734
 735 disabled(){
 736     test "${1#!}" = "$1" && op="=" || op="!="
 737     eval test "x\$${1#!}" $op "xno"
 738 }
 739
 740 enabled_all(){
 741     for opt; do
 742         enabled $opt || return 1
 743     done
 744 }
 745
 746 disabled_all(){
 747     for opt; do
 748         disabled $opt || return 1
 749     done
 750 }
 751
 752 enabled_any(){
 753     for opt; do
 754         enabled $opt && return 0
 755     done
 756 }
 757
 758 disabled_any(){
 759     for opt; do
 760         disabled $opt && return 0
 761     done
 762     return 1
 763 }
 764
 765 set_default(){
 766     for opt; do
 767         eval : \${$opt:=\$${opt}_default}
 768     done
 769 }
 770
 771 is_in(){
 772     value=$1
 773     shift
 774     for var in $*; do
 775         [ $var = $value ] && return 0
 776     done
 777     return 1
 778 }
 779
 780 # The cfg loop is very hot (several thousands iterations), and in bash also
 781 # potentialy quite slow. Try to abort the iterations early, preferably without
 782 # calling functions. 70%+ of the time cfg is already done or without deps.
 783 check_deps(){
 784     for cfg; do
 785         eval [ x\$${cfg}_checking = xdone ] && continue
 786         eval [ x\$${cfg}_checking = xinprogress ] && die "Circular dependency for $cfg."
 787
 788         eval "
 789         dep_all=\$${cfg}_deps
 790         dep_any=\$${cfg}_deps_any
 791         dep_con=\$${cfg}_conflict
 792         dep_sel=\$${cfg}_select
 793         dep_sgs=\$${cfg}_suggest
 794         dep_ifa=\$${cfg}_if
 795         dep_ifn=\$${cfg}_if_any
 796         "
 797
 798         # most of the time here $cfg has no deps - avoid costly no-op work
 799         if [ "$dep_all$dep_any$dep_con$dep_sel$dep_sgs$dep_ifa$dep_ifn" ]; then
 800             eval ${cfg}_checking=inprogress
 801
 802             set -- $cfg "$dep_all" "$dep_any" "$dep_con" "$dep_sel" "$dep_sgs" "$dep_ifa" "$dep_ifn"
 803             check_deps $dep_all $dep_any $dep_con $dep_sel $dep_sgs $dep_ifa $dep_ifn
 804             cfg=$1; dep_all=$2; dep_any=$3; dep_con=$4; dep_sel=$5 dep_sgs=$6; dep_ifa=$7; dep_ifn=$8
 805
 806             [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 807             [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 808             enabled_all  $dep_all || { disable_with_reason $cfg "not all dependencies are satisfied: $dep_all"; }
 809             enabled_any  $dep_any || { disable_with_reason $cfg "not any dependency is satisfied: $dep_any"; }
 810             disabled_all $dep_con || { disable_with_reason $cfg "some conflicting dependencies are unsatisfied: $dep_con"; }
 811             disabled_any $dep_sel && { disable_with_reason $cfg "some selected dependency is unsatisfied: $dep_sel"; }
 812
 813             enabled $cfg && enable_deep_weak $dep_sel $dep_sgs
 814
 815             for dep in $dep_all $dep_any $dep_sel $dep_sgs; do
 816                 # filter out library deps, these do not belong in extralibs
 817                 is_in $dep $LIBRARY_LIST && continue
 818                 enabled $dep && eval append ${cfg}_extralibs ${dep}_extralibs
 819             done
 820         fi
 821
 822         eval ${cfg}_checking=done
 823     done
 824 }
 825
 826 print_config(){
 827     pfx=$1
 828     files=$2
 829     shift 2
 830     map 'eval echo "$v \${$v:-no}"' "$@" |
 831     awk "BEGIN { split(\"$files\", files) }
 832         {
 833             c = \"$pfx\" toupper(\$1);
 834             v = \$2;
 835             sub(/yes/, 1, v);
 836             sub(/no/,  0, v);
 837             for (f in files) {
 838                 file = files[f];
 839                 if (file ~ /\\.h\$/) {
 840                     printf(\"#define %s %d\\n\", c, v) >>file;
 841                 } else if (file ~ /\\.asm\$/) {
 842                     printf(\"%%define %s %d\\n\", c, v) >>file;
 843                 } else if (file ~ /\\.mak\$/) {
 844                     n = -v ? \"\" : \"!\";
 845                     printf(\"%s%s=yes\\n\", n, c) >>file;
 846                 } else if (file ~ /\\.texi\$/) {
 847                     pre = -v ? \"\" : \"@c \";
 848                     yesno = \$2;
 849                     c2 = tolower(c);
 850                     gsub(/_/, \"-\", c2);
 851                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 852                 }
 853             }
 854         }"
 855 }
 856
 857 print_enabled(){
 858     suf=$1
 859     shift
 860     for v; do
 861         enabled $v && printf "%s\n" ${v%$suf}
 862     done
 863 }
 864
 865 append(){
 866     var=$1
 867     shift
 868     eval "$var=\"\$$var $*\""
 869 }
 870
 871 prepend(){
 872     var=$1
 873     shift
 874     eval "$var=\"$* \$$var\""
 875 }
 876
 877 reverse () {
 878     eval '
 879         reverse_out=
 880         for v in $'$1'; do
 881             reverse_out="$v $reverse_out"
 882         done
 883         '$1'=$reverse_out
 884     '
 885 }
 886
 887 # keeps the last occurence of each non-unique item
 888 unique(){
 889     unique_out=
 890     eval unique_in=\$$1
 891     reverse unique_in
 892     for v in $unique_in; do
 893         # " $unique_out" +space such that every item is surrounded with spaces
 894         case " $unique_out" in *" $v "*) continue; esac  # already in list
 895         unique_out="$unique_out$v "
 896     done
 897     reverse unique_out
 898     eval $1=\$unique_out
 899 }
 900
 901 resolve(){
 902     resolve_out=
 903     eval resolve_in=\$$1
 904     for v in $resolve_in; do
 905         eval 'resolve_out="$resolve_out$'$v' "'
 906     done
 907     eval $1=\$resolve_out
 908 }
 909
 910 add_cppflags(){
 911     append CPPFLAGS "$@"
 912 }
 913
 914 add_cflags(){
 915     append CFLAGS $($cflags_filter "$@")
 916 }
 917
 918 add_cflags_headers(){
 919     append CFLAGS_HEADERS $($cflags_filter "$@")
 920 }
 921
 922 add_cxxflags(){
 923     append CXXFLAGS $($cflags_filter "$@")
 924 }
 925
 926 add_objcflags(){
 927     append OBJCFLAGS $($objcflags_filter "$@")
 928 }
 929
 930 add_asflags(){
 931     append ASFLAGS $($asflags_filter "$@")
 932 }
 933
 934 add_ldflags(){
 935     append LDFLAGS $($ldflags_filter "$@")
 936 }
 937
 938 add_ldexeflags(){
 939     append LDEXEFLAGS $($ldflags_filter "$@")
 940 }
 941
 942 add_ldsoflags(){
 943     append LDSOFLAGS $($ldflags_filter "$@")
 944 }
 945
 946 add_extralibs(){
 947     prepend extralibs $($ldflags_filter "$@")
 948 }
 949
 950 add_stripflags(){
 951     append ASMSTRIPFLAGS "$@"
 952 }
 953
 954 add_host_cppflags(){
 955     append host_cppflags "$@"
 956 }
 957
 958 add_host_cflags(){
 959     append host_cflags $($host_cflags_filter "$@")
 960 }
 961
 962 add_host_ldflags(){
 963     append host_ldflags $($host_ldflags_filter "$@")
 964 }
 965
 966 add_compat(){
 967     append compat_objs $1
 968     shift
 969     map 'add_cppflags -D$v' "$@"
 970 }
 971
 972 test_cmd(){
 973     log "$@"
 974     "$@" >> $logfile 2>&1
 975 }
 976
 977 test_stat(){
 978     log test_stat "$@"
 979     stat "$1" >> $logfile 2>&1
 980 }
 981
 982 cc_e(){
 983     eval printf '%s\\n' $CC_E
 984 }
 985
 986 cc_o(){
 987     eval printf '%s\\n' $CC_O
 988 }
 989
 990 as_o(){
 991     eval printf '%s\\n' $AS_O
 992 }
 993
 994 x86asm_o(){
 995     eval printf '%s\\n' $X86ASM_O
 996 }
 997
 998 ld_o(){
 999     eval printf '%s\\n' $LD_O
1000 }
1001
1002 hostcc_e(){
1003     eval printf '%s\\n' $HOSTCC_E
1004 }
1005
1006 hostcc_o(){
1007     eval printf '%s\\n' $HOSTCC_O
1008 }
1009
1010 nvcc_o(){
1011     eval printf '%s\\n' $NVCC_O
1012 }
1013
1014 test_cc(){
1015     log test_cc "$@"
1016     cat > $TMPC
1017     log_file $TMPC
1018     test_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
1019 }
1020
1021 test_cxx(){
1022     log test_cxx "$@"
1023     cat > $TMPCPP
1024     log_file $TMPCPP
1025     test_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
1026 }
1027
1028 test_objcc(){
1029     log test_objcc "$@"
1030     cat > $TMPM
1031     log_file $TMPM
1032     test_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
1033 }
1034
1035 test_nvcc(){
1036     log test_nvcc "$@"
1037     cat > $TMPCU
1038     log_file $TMPCU
1039     tmpcu_=$TMPCU
1040     tmpo_=$TMPO
1041     [ -x "$(command -v cygpath)" ] && tmpcu_=$(cygpath -m $tmpcu_) && tmpo_=$(cygpath -m $tmpo_)
1042     test_cmd $nvcc $nvccflags "$@" $NVCC_C $(nvcc_o $tmpo_) $tmpcu_
1043 }
1044
1045 check_nvcc() {
1046     log check_nvcc "$@"
1047     name=$1
1048     shift 1
1049     disabled $name && return
1050     disable $name
1051     test_nvcc "$@" <<EOF && enable $name
1052 extern "C" {
1053     __global__ void hello(unsigned char *data) {}
1054 }
1055 EOF
1056 }
1057
1058 test_cpp(){
1059     log test_cpp "$@"
1060     cat > $TMPC
1061     log_file $TMPC
1062     test_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
1063 }
1064
1065 test_as(){
1066     log test_as "$@"
1067     cat > $TMPS
1068     log_file $TMPS
1069     test_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
1070 }
1071
1072 test_x86asm(){
1073     log test_x86asm "$@"
1074     echo "$1" > $TMPASM
1075     log_file $TMPASM
1076     shift
1077     test_cmd $x86asmexe $X86ASMFLAGS -Werror "$@" $(x86asm_o $TMPO) $TMPASM
1078 }
1079
1080 check_cmd(){
1081     log check_cmd "$@"
1082     cmd=$1
1083     disabled $cmd && return
1084     disable $cmd
1085     test_cmd $@ && enable $cmd
1086 }
1087
1088 check_as(){
1089     log check_as "$@"
1090     name=$1
1091     code=$2
1092     shift 2
1093     disable $name
1094     test_as $@ <<EOF && enable $name
1095 $code
1096 EOF
1097 }
1098
1099 check_inline_asm(){
1100     log check_inline_asm "$@"
1101     name="$1"
1102     code="$2"
1103     shift 2
1104     disable $name
1105     test_cc "$@" <<EOF && enable $name
1106 void foo(void){ __asm__ volatile($code); }
1107 EOF
1108 }
1109
1110 check_inline_asm_flags(){
1111     log check_inline_asm_flags "$@"
1112     name="$1"
1113     code="$2"
1114     flags=''
1115     shift 2
1116     while [ "$1" != "" ]; do
1117       append flags $1
1118       shift
1119     done;
1120     disable $name
1121     cat > $TMPC <<EOF
1122 void foo(void){ __asm__ volatile($code); }
1123 EOF
1124     log_file $TMPC
1125     test_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
1126     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
1127 }
1128
1129 check_insn(){
1130     log check_insn "$@"
1131     check_inline_asm ${1}_inline "\"$2\""
1132     check_as ${1}_external "$2"
1133 }
1134
1135 check_x86asm(){
1136     log check_x86asm "$@"
1137     name=$1
1138     shift
1139     disable $name
1140     test_x86asm "$@" && enable $name
1141 }
1142
1143 test_ld(){
1144     log test_ld "$@"
1145     type=$1
1146     shift 1
1147     flags=$(filter_out '-l*|*.so' $@)
1148     libs=$(filter '-l*|*.so' $@)
1149     test_$type $($cflags_filter $flags) || return
1150     flags=$($ldflags_filter $flags)
1151     libs=$($ldflags_filter $libs)
1152     test_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
1153 }
1154
1155 check_ld(){
1156     log check_ld "$@"
1157     type=$1
1158     name=$2
1159     shift 2
1160     disable $name
1161     test_ld $type $@ && enable $name
1162 }
1163
1164 print_include(){
1165     hdr=$1
1166     test "${hdr%.h}" = "${hdr}" &&
1167         echo "#include $hdr"    ||
1168         echo "#include <$hdr>"
1169 }
1170
1171 test_code(){
1172     log test_code "$@"
1173     check=$1
1174     headers=$2
1175     code=$3
1176     shift 3
1177     {
1178         for hdr in $headers; do
1179             print_include $hdr
1180         done
1181         echo "int main(void) { $code; return 0; }"
1182     } | test_$check "$@"
1183 }
1184
1185 check_cppflags(){
1186     log check_cppflags "$@"
1187     test_cpp "$@" <<EOF && append CPPFLAGS "$@"
1188 #include <stdlib.h>
1189 EOF
1190 }
1191
1192 test_cflags(){
1193     log test_cflags "$@"
1194     set -- $($cflags_filter "$@")
1195     test_cc "$@" <<EOF
1196 int x;
1197 EOF
1198 }
1199
1200 check_cflags(){
1201     log check_cflags "$@"
1202     test_cflags "$@" && add_cflags "$@"
1203 }
1204
1205 check_cxxflags(){
1206     log check_cxxflags "$@"
1207     set -- $($cflags_filter "$@")
1208     test_cxx "$@" <<EOF && append CXXFLAGS "$@"
1209 int x;
1210 EOF
1211 }
1212
1213 test_objcflags(){
1214     log test_objcflags "$@"
1215     set -- $($objcflags_filter "$@")
1216     test_objcc "$@" <<EOF
1217 int x;
1218 EOF
1219 }
1220
1221 check_objcflags(){
1222     log check_objcflags "$@"
1223     test_objcflags "$@" && add_objcflags "$@"
1224 }
1225
1226 test_ldflags(){
1227     log test_ldflags "$@"
1228     set -- $($ldflags_filter "$@")
1229     test_ld "cc" "$@" <<EOF
1230 int main(void){ return 0; }
1231 EOF
1232 }
1233
1234 check_ldflags(){
1235     log check_ldflags "$@"
1236     test_ldflags "$@" && add_ldflags "$@"
1237 }
1238
1239 test_stripflags(){
1240     log test_stripflags "$@"
1241     # call test_cc to get a fresh TMPO
1242     test_cc <<EOF
1243 int main(void) { return 0; }
1244 EOF
1245     test_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1246 }
1247
1248 check_stripflags(){
1249     log check_stripflags "$@"
1250     test_stripflags "$@" && add_stripflags "$@"
1251 }
1252
1253 check_headers(){
1254     log check_headers "$@"
1255     headers=$1
1256     shift
1257     disable_sanitized $headers
1258     {
1259         for hdr in $headers; do
1260             print_include $hdr
1261         done
1262         echo "int x;"
1263     } | test_cpp "$@" && enable_sanitized $headers
1264 }
1265
1266 check_header_objcc(){
1267     log check_header_objcc "$@"
1268     rm -f -- "$TMPO"
1269     header=$1
1270     shift
1271     disable_sanitized $header
1272     {
1273        echo "#include <$header>"
1274        echo "int main(void) { return 0; }"
1275     } | test_objcc && test_stat "$TMPO" && enable_sanitized $header
1276 }
1277
1278 check_apple_framework(){
1279     log check_apple_framework "$@"
1280     framework="$1"
1281     name="$(tolower $framework)"
1282     header="${framework}/${framework}.h"
1283     disable $name
1284     check_header_objcc $header &&
1285         enable $name && eval ${name}_extralibs='"-framework $framework"'
1286 }
1287
1288 check_func(){
1289     log check_func "$@"
1290     func=$1
1291     shift
1292     disable $func
1293     test_ld "cc" "$@" <<EOF && enable $func
1294 extern int $func();
1295 int main(void){ $func(); }
1296 EOF
1297 }
1298
1299 check_complexfunc(){
1300     log check_complexfunc "$@"
1301     func=$1
1302     narg=$2
1303     shift 2
1304     test $narg = 2 && args="f, g" || args="f * I"
1305     disable $func
1306     test_ld "cc" "$@" <<EOF && enable $func
1307 #include <complex.h>
1308 #include <math.h>
1309 float foo(complex float f, complex float g) { return $func($args); }
1310 int main(void){ return (int) foo; }
1311 EOF
1312 }
1313
1314 check_mathfunc(){
1315     log check_mathfunc "$@"
1316     func=$1
1317     narg=$2
1318     shift 2
1319     test $narg = 2 && args="f, g" || args="f"
1320     disable $func
1321     test_ld "cc" "$@" <<EOF && enable $func
1322 #include <math.h>
1323 float foo(float f, float g) { return $func($args); }
1324 int main(void){ return (int) foo; }
1325 EOF
1326 }
1327
1328 check_func_headers(){
1329     log check_func_headers "$@"
1330     headers=$1
1331     funcs=$2
1332     shift 2
1333     {
1334         for hdr in $headers; do
1335             print_include $hdr
1336         done
1337         echo "#include <stdint.h>"
1338         for func in $funcs; do
1339             echo "long check_$func(void) { return (long) $func; }"
1340         done
1341         echo "int main(void) { int ret = 0;"
1342         # LTO could optimize out the test functions without this
1343         for func in $funcs; do
1344             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1345         done
1346         echo "return ret; }"
1347     } | test_ld "cc" "$@" && enable $funcs && enable_sanitized $headers
1348 }
1349
1350 check_class_headers_cpp(){
1351     log check_class_headers_cpp "$@"
1352     headers=$1
1353     classes=$2
1354     shift 2
1355     {
1356         for hdr in $headers; do
1357             echo "#include <$hdr>"
1358         done
1359         echo "int main(void) { "
1360         i=1
1361         for class in $classes; do
1362             echo "$class obj$i;"
1363             i=$(expr $i + 1)
1364         done
1365         echo "return 0; }"
1366     } | test_ld "cxx" "$@" && enable $funcs && enable_sanitized $headers
1367 }
1368
1369 test_cpp_condition(){
1370     log test_cpp_condition "$@"
1371     header=$1
1372     condition=$2
1373     shift 2
1374     test_cpp "$@" <<EOF
1375 #include <$header>
1376 #if !($condition)
1377 #error "unsatisfied condition: $condition"
1378 #endif
1379 EOF
1380 }
1381
1382 check_cpp_condition(){
1383     log check_cpp_condition "$@"
1384     name=$1
1385     shift 1
1386     disable $name
1387     test_cpp_condition "$@" && enable $name
1388 }
1389
1390 test_cflags_cc(){
1391     log test_cflags_cc "$@"
1392     flags=$1
1393     header=$2
1394     condition=$3
1395     shift 3
1396     set -- $($cflags_filter "$flags")
1397     test_cc "$@" <<EOF
1398 #include <$header>
1399 #if !($condition)
1400 #error "unsatisfied condition: $condition"
1401 #endif
1402 EOF
1403 }
1404
1405 check_lib(){
1406     log check_lib "$@"
1407     name="$1"
1408     headers="$2"
1409     funcs="$3"
1410     shift 3
1411     disable $name
1412     check_func_headers "$headers" "$funcs" "$@" &&
1413         enable $name && eval ${name}_extralibs="\$@"
1414 }
1415
1416 check_lib_cpp(){
1417     log check_lib_cpp "$@"
1418     name="$1"
1419     headers="$2"
1420     classes="$3"
1421     shift 3
1422     disable $name
1423     check_class_headers_cpp "$headers" "$classes" "$@" &&
1424         enable $name && eval ${name}_extralibs="\$@"
1425 }
1426
1427 test_pkg_config(){
1428     log test_pkg_config "$@"
1429     name="$1"
1430     pkg_version="$2"
1431     pkg="${2%% *}"
1432     headers="$3"
1433     funcs="$4"
1434     shift 4
1435     disable $name
1436     test_cmd $pkg_config --exists --print-errors $pkg_version || return
1437     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1438     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1439     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1440         enable $name &&
1441         set_sanitized "${name}_cflags"    $pkg_cflags &&
1442         set_sanitized "${name}_extralibs" $pkg_libs
1443 }
1444
1445 check_pkg_config(){
1446     log check_pkg_config "$@"
1447     name="$1"
1448     test_pkg_config "$@" &&
1449         eval add_cflags \$${name}_cflags
1450 }
1451
1452 test_exec(){
1453     test_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1454 }
1455
1456 check_exec_crash(){
1457     log check_exec_crash "$@"
1458     code=$(cat)
1459
1460     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1461     # are safe but may not be available everywhere.  Thus we use
1462     # raise(SIGTERM) instead.  The check is run in a subshell so we
1463     # can redirect the "Terminated" message from the shell.  SIGBUS
1464     # is not defined by standard C so it is used conditionally.
1465
1466     (test_exec "$@") >> $logfile 2>&1 <<EOF
1467 #include <signal.h>
1468 static void sighandler(int sig){
1469     raise(SIGTERM);
1470 }
1471 int foo(void){
1472     $code
1473 }
1474 int (*func_ptr)(void) = foo;
1475 int main(void){
1476     signal(SIGILL, sighandler);
1477     signal(SIGFPE, sighandler);
1478     signal(SIGSEGV, sighandler);
1479 #ifdef SIGBUS
1480     signal(SIGBUS, sighandler);
1481 #endif
1482     return func_ptr();
1483 }
1484 EOF
1485 }
1486
1487 check_type(){
1488     log check_type "$@"
1489     headers=$1
1490     type=$2
1491     shift 2
1492     disable_sanitized "$type"
1493     test_code cc "$headers" "$type v" "$@" && enable_sanitized "$type"
1494 }
1495
1496 check_struct(){
1497     log check_struct "$@"
1498     headers=$1
1499     struct=$2
1500     member=$3
1501     shift 3
1502     disable_sanitized "${struct}_${member}"
1503     test_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1504         enable_sanitized "${struct}_${member}"
1505 }
1506
1507 check_builtin(){
1508     log check_builtin "$@"
1509     name=$1
1510     headers=$2
1511     builtin=$3
1512     shift 3
1513     disable "$name"
1514     test_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1515 }
1516
1517 check_compile_assert(){
1518     log check_compile_assert "$@"
1519     name=$1
1520     headers=$2
1521     condition=$3
1522     shift 3
1523     disable "$name"
1524     test_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1525 }
1526
1527 check_cc(){
1528     log check_cc "$@"
1529     name=$1
1530     shift
1531     disable "$name"
1532     test_code cc "$@" && enable "$name"
1533 }
1534
1535 require(){
1536     log require "$@"
1537     name_version="$1"
1538     name="${1%% *}"
1539     shift
1540     check_lib $name "$@" || die "ERROR: $name_version not found"
1541 }
1542
1543 require_cc(){
1544     log require_cc "$@"
1545     name="$1"
1546     check_cc "$@" || die "ERROR: $name failed"
1547 }
1548
1549 require_cpp(){
1550     name="$1"
1551     headers="$2"
1552     classes="$3"
1553     shift 3
1554     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1555 }
1556
1557 require_headers(){
1558     log require_headers "$@"
1559     headers="$1"
1560     check_headers "$@" || die "ERROR: $headers not found"
1561 }
1562
1563 require_cpp_condition(){
1564     log require_cpp_condition "$@"
1565     condition="$3"
1566     check_cpp_condition "$@" || die "ERROR: $condition not satisfied"
1567 }
1568
1569 require_pkg_config(){
1570     log require_pkg_config "$@"
1571     pkg_version="$2"
1572     check_pkg_config "$@" || die "ERROR: $pkg_version not found using pkg-config$pkg_config_fail_message"
1573 }
1574
1575 test_host_cc(){
1576     log test_host_cc "$@"
1577     cat > $TMPC
1578     log_file $TMPC
1579     test_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1580 }
1581
1582 test_host_cpp(){
1583     log test_host_cpp "$@"
1584     cat > $TMPC
1585     log_file $TMPC
1586     test_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1587 }
1588
1589 check_host_cppflags(){
1590     log check_host_cppflags "$@"
1591     test_host_cpp "$@" <<EOF && append host_cppflags "$@"
1592 #include <stdlib.h>
1593 EOF
1594 }
1595
1596 check_host_cflags(){
1597     log check_host_cflags "$@"
1598     set -- $($host_cflags_filter "$@")
1599     test_host_cc "$@" <<EOF && append host_cflags "$@"
1600 int x;
1601 EOF
1602 }
1603
1604 test_host_cpp_condition(){
1605     log test_host_cpp_condition "$@"
1606     header=$1
1607     condition=$2
1608     shift 2
1609     test_host_cpp "$@" <<EOF
1610 #include <$header>
1611 #if !($condition)
1612 #error "unsatisfied condition: $condition"
1613 #endif
1614 EOF
1615 }
1616
1617 check_host_cpp_condition(){
1618     log check_host_cpp_condition "$@"
1619     name=$1
1620     shift 1
1621     disable $name
1622     test_host_cpp_condition "$@" && enable $name
1623 }
1624
1625 cp_if_changed(){
1626     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1627     mkdir -p "$(dirname $2)"
1628     cp -f "$1" "$2"
1629 }
1630
1631 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1632 # system-dependent things.
1633
1634 AVCODEC_COMPONENTS="
1635     bsfs
1636     decoders
1637     encoders
1638     hwaccels
1639     parsers
1640 "
1641
1642 AVDEVICE_COMPONENTS="
1643     indevs
1644     outdevs
1645 "
1646
1647 AVFILTER_COMPONENTS="
1648     filters
1649 "
1650
1651 AVFORMAT_COMPONENTS="
1652     demuxers
1653     muxers
1654     protocols
1655 "
1656
1657 COMPONENT_LIST="
1658     $AVCODEC_COMPONENTS
1659     $AVDEVICE_COMPONENTS
1660     $AVFILTER_COMPONENTS
1661     $AVFORMAT_COMPONENTS
1662 "
1663
1664 EXAMPLE_LIST="
1665     avio_dir_cmd_example
1666     avio_reading_example
1667     decode_audio_example
1668     decode_video_example
1669     demuxing_decoding_example
1670     encode_audio_example
1671     encode_video_example
1672     extract_mvs_example
1673     filter_audio_example
1674     filtering_audio_example
1675     filtering_video_example
1676     http_multiclient_example
1677     hw_decode_example
1678     metadata_example
1679     muxing_example
1680     qsvdec_example
1681     remuxing_example
1682     resampling_audio_example
1683     scaling_video_example
1684     transcode_aac_example
1685     transcoding_example
1686     vaapi_encode_example
1687     vaapi_transcode_example
1688 "
1689
1690 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1691     alsa
1692     appkit
1693     avfoundation
1694     bzlib
1695     coreimage
1696     iconv
1697     libxcb
1698     libxcb_shm
1699     libxcb_shape
1700     libxcb_xfixes
1701     lzma
1702     schannel
1703     sdl2
1704     securetransport
1705     sndio
1706     xlib
1707     zlib
1708 "
1709
1710 EXTERNAL_LIBRARY_GPL_LIST="
1711     avisynth
1712     frei0r
1713     libcdio
1714     libdavs2
1715     librubberband
1716     libvidstab
1717     libx264
1718     libx265
1719     libxavs
1720     libxavs2
1721     libxvid
1722 "
1723
1724 EXTERNAL_LIBRARY_NONFREE_LIST="
1725     decklink
1726     libfdk_aac
1727     openssl
1728     libtls
1729 "
1730
1731 EXTERNAL_LIBRARY_VERSION3_LIST="
1732     gmp
1733     libaribb24
1734     liblensfun
1735     libopencore_amrnb
1736     libopencore_amrwb
1737     libvmaf
1738     libvo_amrwbenc
1739     mbedtls
1740     rkmpp
1741 "
1742
1743 EXTERNAL_LIBRARY_GPLV3_LIST="
1744     libsmbclient
1745 "
1746
1747 EXTERNAL_LIBRARY_LIST="
1748     $EXTERNAL_LIBRARY_GPL_LIST
1749     $EXTERNAL_LIBRARY_NONFREE_LIST
1750     $EXTERNAL_LIBRARY_VERSION3_LIST
1751     $EXTERNAL_LIBRARY_GPLV3_LIST
1752     chromaprint
1753     gcrypt
1754     gnutls
1755     jni
1756     ladspa
1757     libaom
1758     libass
1759     libbluray
1760     libbs2b
1761     libcaca
1762     libcelt
1763     libcodec2
1764     libdav1d
1765     libdc1394
1766     libdrm
1767     libflite
1768     libfontconfig
1769     libfreetype
1770     libfribidi
1771     libgme
1772     libgsm
1773     libiec61883
1774     libilbc
1775     libjack
1776     libklvanc
1777     libkvazaar
1778     libmodplug
1779     libmp3lame
1780     libmysofa
1781     libopencv
1782     libopenh264
1783     libopenjpeg
1784     libopenmpt
1785     libopus
1786     libpulse
1787     librsvg
1788     librtmp
1789     libshine
1790     libsmbclient
1791     libsnappy
1792     libsoxr
1793     libspeex
1794     libsrt
1795     libssh
1796     libtensorflow
1797     libtesseract
1798     libtheora
1799     libtwolame
1800     libv4l2
1801     libvorbis
1802     libvpx
1803     libwavpack
1804     libwebp
1805     libxml2
1806     libzimg
1807     libzmq
1808     libzvbi
1809     lv2
1810     mediacodec
1811     openal
1812     opengl
1813     pocketsphinx
1814     vapoursynth
1815 "
1816
1817 HWACCEL_AUTODETECT_LIBRARY_LIST="
1818     amf
1819     audiotoolbox
1820     crystalhd
1821     cuda
1822     cuda_llvm
1823     cuvid
1824     d3d11va
1825     dxva2
1826     ffnvcodec
1827     nvdec
1828     nvenc
1829     vaapi
1830     vdpau
1831     videotoolbox
1832     v4l2_m2m
1833     xvmc
1834 "
1835
1836 # catchall list of things that require external libs to link
1837 EXTRALIBS_LIST="
1838     cpu_init
1839     cws2fws
1840 "
1841
1842 HWACCEL_LIBRARY_NONFREE_LIST="
1843     cuda_nvcc
1844     cuda_sdk
1845     libnpp
1846 "
1847
1848 HWACCEL_LIBRARY_LIST="
1849     $HWACCEL_LIBRARY_NONFREE_LIST
1850     libmfx
1851     mmal
1852     omx
1853     opencl
1854 "
1855
1856 DOCUMENT_LIST="
1857     doc
1858     htmlpages
1859     manpages
1860     podpages
1861     txtpages
1862 "
1863
1864 FEATURE_LIST="
1865     ftrapv
1866     gray
1867     hardcoded_tables
1868     omx_rpi
1869     runtime_cpudetect
1870     safe_bitstream_reader
1871     shared
1872     small
1873     static
1874     swscale_alpha
1875 "
1876
1877 # this list should be kept in linking order
1878 LIBRARY_LIST="
1879     avdevice
1880     avfilter
1881     swscale
1882     postproc
1883     avformat
1884     avcodec
1885     swresample
1886     avresample
1887     avutil
1888 "
1889
1890 LICENSE_LIST="
1891     gpl
1892     nonfree
1893     version3
1894 "
1895
1896 PROGRAM_LIST="
1897     ffplay
1898     ffprobe
1899     ffmpeg
1900 "
1901
1902 SUBSYSTEM_LIST="
1903     dct
1904     dwt
1905     error_resilience
1906     faan
1907     fast_unaligned
1908     fft
1909     lsp
1910     lzo
1911     mdct
1912     pixelutils
1913     network
1914     rdft
1915 "
1916
1917 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1918 CONFIG_LIST="
1919     $DOCUMENT_LIST
1920     $EXAMPLE_LIST
1921     $EXTERNAL_LIBRARY_LIST
1922     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1923     $HWACCEL_LIBRARY_LIST
1924     $HWACCEL_AUTODETECT_LIBRARY_LIST
1925     $FEATURE_LIST
1926     $LICENSE_LIST
1927     $LIBRARY_LIST
1928     $PROGRAM_LIST
1929     $SUBSYSTEM_LIST
1930     autodetect
1931     fontconfig
1932     linux_perf
1933     memory_poisoning
1934     neon_clobber_test
1935     ossfuzz
1936     pic
1937     thumb
1938     valgrind_backtrace
1939     xmm_clobber_test
1940     $COMPONENT_LIST
1941 "
1942
1943 THREADS_LIST="
1944     pthreads
1945     os2threads
1946     w32threads
1947 "
1948
1949 ATOMICS_LIST="
1950     atomics_gcc
1951     atomics_suncc
1952     atomics_win32
1953 "
1954
1955 AUTODETECT_LIBS="
1956     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1957     $HWACCEL_AUTODETECT_LIBRARY_LIST
1958     $THREADS_LIST
1959 "
1960
1961 ARCH_LIST="
1962     aarch64
1963     alpha
1964     arm
1965     avr32
1966     avr32_ap
1967     avr32_uc
1968     bfin
1969     ia64
1970     m68k
1971     mips
1972     mips64
1973     parisc
1974     ppc
1975     ppc64
1976     s390
1977     sh4
1978     sparc
1979     sparc64
1980     tilegx
1981     tilepro
1982     tomi
1983     x86
1984     x86_32
1985     x86_64
1986 "
1987
1988 ARCH_EXT_LIST_ARM="
1989     armv5te
1990     armv6
1991     armv6t2
1992     armv8
1993     neon
1994     vfp
1995     vfpv3
1996     setend
1997 "
1998
1999 ARCH_EXT_LIST_MIPS="
2000     mipsfpu
2001     mips32r2
2002     mips32r5
2003     mips64r2
2004     mips32r6
2005     mips64r6
2006     mipsdsp
2007     mipsdspr2
2008     msa
2009     msa2
2010 "
2011
2012 ARCH_EXT_LIST_LOONGSON="
2013     loongson2
2014     loongson3
2015     mmi
2016 "
2017
2018 ARCH_EXT_LIST_X86_SIMD="
2019     aesni
2020     amd3dnow
2021     amd3dnowext
2022     avx
2023     avx2
2024     avx512
2025     fma3
2026     fma4
2027     mmx
2028     mmxext
2029     sse
2030     sse2
2031     sse3
2032     sse4
2033     sse42
2034     ssse3
2035     xop
2036 "
2037
2038 ARCH_EXT_LIST_PPC="
2039     altivec
2040     dcbzl
2041     ldbrx
2042     power8
2043     ppc4xx
2044     vsx
2045 "
2046
2047 ARCH_EXT_LIST_X86="
2048     $ARCH_EXT_LIST_X86_SIMD
2049     cpunop
2050     i686
2051 "
2052
2053 ARCH_EXT_LIST="
2054     $ARCH_EXT_LIST_ARM
2055     $ARCH_EXT_LIST_PPC
2056     $ARCH_EXT_LIST_X86
2057     $ARCH_EXT_LIST_MIPS
2058     $ARCH_EXT_LIST_LOONGSON
2059 "
2060
2061 ARCH_FEATURES="
2062     aligned_stack
2063     fast_64bit
2064     fast_clz
2065     fast_cmov
2066     local_aligned
2067     simd_align_16
2068     simd_align_32
2069     simd_align_64
2070 "
2071
2072 BUILTIN_LIST="
2073     atomic_cas_ptr
2074     machine_rw_barrier
2075     MemoryBarrier
2076     mm_empty
2077     rdtsc
2078     sem_timedwait
2079     sync_val_compare_and_swap
2080 "
2081 HAVE_LIST_CMDLINE="
2082     inline_asm
2083     symver
2084     x86asm
2085 "
2086
2087 HAVE_LIST_PUB="
2088     bigendian
2089     fast_unaligned
2090 "
2091
2092 HEADERS_LIST="
2093     arpa_inet_h
2094     asm_types_h
2095     cdio_paranoia_h
2096     cdio_paranoia_paranoia_h
2097     cuda_h
2098     dispatch_dispatch_h
2099     dev_bktr_ioctl_bt848_h
2100     dev_bktr_ioctl_meteor_h
2101     dev_ic_bt8xx_h
2102     dev_video_bktr_ioctl_bt848_h
2103     dev_video_meteor_ioctl_meteor_h
2104     direct_h
2105     dirent_h
2106     dxgidebug_h
2107     dxva_h
2108     ES2_gl_h
2109     gsm_h
2110     io_h
2111     linux_perf_event_h
2112     machine_ioctl_bt848_h
2113     machine_ioctl_meteor_h
2114     malloc_h
2115     opencv2_core_core_c_h
2116     OpenGL_gl3_h
2117     poll_h
2118     sys_param_h
2119     sys_resource_h
2120     sys_select_h
2121     sys_soundcard_h
2122     sys_time_h
2123     sys_un_h
2124     sys_videoio_h
2125     termios_h
2126     udplite_h
2127     unistd_h
2128     valgrind_valgrind_h
2129     windows_h
2130     winsock2_h
2131 "
2132
2133 INTRINSICS_LIST="
2134     intrinsics_neon
2135 "
2136
2137 COMPLEX_FUNCS="
2138     cabs
2139     cexp
2140 "
2141
2142 MATH_FUNCS="
2143     atanf
2144     atan2f
2145     cbrt
2146     cbrtf
2147     copysign
2148     cosf
2149     erf
2150     exp2
2151     exp2f
2152     expf
2153     hypot
2154     isfinite
2155     isinf
2156     isnan
2157     ldexpf
2158     llrint
2159     llrintf
2160     log2
2161     log2f
2162     log10f
2163     lrint
2164     lrintf
2165     powf
2166     rint
2167     round
2168     roundf
2169     sinf
2170     trunc
2171     truncf
2172 "
2173
2174 SYSTEM_FEATURES="
2175     dos_paths
2176     libc_msvcrt
2177     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2178     section_data_rel_ro
2179     threads
2180     uwp
2181     winrt
2182 "
2183
2184 SYSTEM_FUNCS="
2185     access
2186     aligned_malloc
2187     arc4random
2188     clock_gettime
2189     closesocket
2190     CommandLineToArgvW
2191     fcntl
2192     getaddrinfo
2193     gethrtime
2194     getopt
2195     GetProcessAffinityMask
2196     GetProcessMemoryInfo
2197     GetProcessTimes
2198     getrusage
2199     GetSystemTimeAsFileTime
2200     gettimeofday
2201     glob
2202     glXGetProcAddress
2203     gmtime_r
2204     inet_aton
2205     isatty
2206     kbhit
2207     localtime_r
2208     lstat
2209     lzo1x_999_compress
2210     mach_absolute_time
2211     MapViewOfFile
2212     memalign
2213     mkstemp
2214     mmap
2215     mprotect
2216     nanosleep
2217     PeekNamedPipe
2218     posix_memalign
2219     pthread_cancel
2220     sched_getaffinity
2221     SecItemImport
2222     SetConsoleTextAttribute
2223     SetConsoleCtrlHandler
2224     setmode
2225     setrlimit
2226     Sleep
2227     strerror_r
2228     sysconf
2229     sysctl
2230     usleep
2231     UTGetOSTypeFromString
2232     VirtualAlloc
2233     wglGetProcAddress
2234 "
2235
2236 SYSTEM_LIBRARIES="
2237     bcrypt
2238     vaapi_drm
2239     vaapi_x11
2240     vdpau_x11
2241 "
2242
2243 TOOLCHAIN_FEATURES="
2244     as_arch_directive
2245     as_dn_directive
2246     as_fpu_directive
2247     as_func
2248     as_object_arch
2249     asm_mod_q
2250     blocks_extension
2251     ebp_available
2252     ebx_available
2253     gnu_as
2254     gnu_windres
2255     ibm_asm
2256     inline_asm_direct_symbol_refs
2257     inline_asm_labels
2258     inline_asm_nonlocal_labels
2259     pragma_deprecated
2260     rsync_contimeout
2261     symver_asm_label
2262     symver_gnu_asm
2263     vfp_args
2264     xform_asm
2265     xmm_clobbers
2266 "
2267
2268 TYPES_LIST="
2269     kCMVideoCodecType_HEVC
2270     kCVPixelFormatType_420YpCbCr10BiPlanarVideoRange
2271     kCVImageBufferTransferFunction_SMPTE_ST_2084_PQ
2272     kCVImageBufferTransferFunction_ITU_R_2100_HLG
2273     kCVImageBufferTransferFunction_Linear
2274     socklen_t
2275     struct_addrinfo
2276     struct_group_source_req
2277     struct_ip_mreq_source
2278     struct_ipv6_mreq
2279     struct_msghdr_msg_flags
2280     struct_pollfd
2281     struct_rusage_ru_maxrss
2282     struct_sctp_event_subscribe
2283     struct_sockaddr_in6
2284     struct_sockaddr_sa_len
2285     struct_sockaddr_storage
2286     struct_stat_st_mtim_tv_nsec
2287     struct_v4l2_frmivalenum_discrete
2288 "
2289
2290 HAVE_LIST="
2291     $ARCH_EXT_LIST
2292     $(add_suffix _external $ARCH_EXT_LIST)
2293     $(add_suffix _inline   $ARCH_EXT_LIST)
2294     $ARCH_FEATURES
2295     $BUILTIN_LIST
2296     $COMPLEX_FUNCS
2297     $HAVE_LIST_CMDLINE
2298     $HAVE_LIST_PUB
2299     $HEADERS_LIST
2300     $INTRINSICS_LIST
2301     $MATH_FUNCS
2302     $SYSTEM_FEATURES
2303     $SYSTEM_FUNCS
2304     $SYSTEM_LIBRARIES
2305     $THREADS_LIST
2306     $TOOLCHAIN_FEATURES
2307     $TYPES_LIST
2308     makeinfo
2309     makeinfo_html
2310     opencl_d3d11
2311     opencl_drm_arm
2312     opencl_drm_beignet
2313     opencl_dxva2
2314     opencl_vaapi_beignet
2315     opencl_vaapi_intel_media
2316     perl
2317     pod2man
2318     texi2html
2319 "
2320
2321 # options emitted with CONFIG_ prefix but not available on the command line
2322 CONFIG_EXTRA="
2323     aandcttables
2324     ac3dsp
2325     adts_header
2326     audio_frame_queue
2327     audiodsp
2328     blockdsp
2329     bswapdsp
2330     cabac
2331     cbs
2332     cbs_av1
2333     cbs_h264
2334     cbs_h265
2335     cbs_jpeg
2336     cbs_mpeg2
2337     cbs_vp9
2338     dirac_parse
2339     dnn
2340     dvprofile
2341     exif
2342     faandct
2343     faanidct
2344     fdctdsp
2345     flacdsp
2346     fmtconvert
2347     frame_thread_encoder
2348     g722dsp
2349     golomb
2350     gplv3
2351     h263dsp
2352     h264chroma
2353     h264dsp
2354     h264parse
2355     h264pred
2356     h264qpel
2357     hevcparse
2358     hpeldsp
2359     huffman
2360     huffyuvdsp
2361     huffyuvencdsp
2362     idctdsp
2363     iirfilter
2364     mdct15
2365     intrax8
2366     iso_media
2367     ividsp
2368     jpegtables
2369     lgplv3
2370     libx262
2371     llauddsp
2372     llviddsp
2373     llvidencdsp
2374     lpc
2375     lzf
2376     me_cmp
2377     mpeg_er
2378     mpegaudio
2379     mpegaudiodsp
2380     mpegaudioheader
2381     mpegvideo
2382     mpegvideoenc
2383     mss34dsp
2384     pixblockdsp
2385     qpeldsp
2386     qsv
2387     qsvdec
2388     qsvenc
2389     qsvvpp
2390     rangecoder
2391     riffdec
2392     riffenc
2393     rtpdec
2394     rtpenc_chain
2395     rv34dsp
2396     scene_sad
2397     sinewin
2398     snappy
2399     srtp
2400     startcode
2401     texturedsp
2402     texturedspenc
2403     tpeldsp
2404     vaapi_1
2405     vaapi_encode
2406     vc1dsp
2407     videodsp
2408     vp3dsp
2409     vp56dsp
2410     vp8dsp
2411     wma_freqs
2412     wmv2dsp
2413 "
2414
2415 CMDLINE_SELECT="
2416     $ARCH_EXT_LIST
2417     $CONFIG_LIST
2418     $HAVE_LIST_CMDLINE
2419     $THREADS_LIST
2420     asm
2421     cross_compile
2422     debug
2423     extra_warnings
2424     logging
2425     lto
2426     optimizations
2427     rpath
2428     stripping
2429 "
2430
2431 PATHS_LIST="
2432     bindir
2433     datadir
2434     docdir
2435     incdir
2436     libdir
2437     mandir
2438     pkgconfigdir
2439     prefix
2440     shlibdir
2441     install_name_dir
2442 "
2443
2444 CMDLINE_SET="
2445     $PATHS_LIST
2446     ar
2447     arch
2448     as
2449     assert_level
2450     build_suffix
2451     cc
2452     objcc
2453     cpu
2454     cross_prefix
2455     custom_allocator
2456     cxx
2457     dep_cc
2458     doxygen
2459     env
2460     extra_version
2461     gas
2462     host_cc
2463     host_cflags
2464     host_extralibs
2465     host_ld
2466     host_ldflags
2467     host_os
2468     ignore_tests
2469     install
2470     ld
2471     ln_s
2472     logfile
2473     malloc_prefix
2474     nm
2475     optflags
2476     nvcc
2477     nvccflags
2478     pkg_config
2479     pkg_config_flags
2480     progs_suffix
2481     random_seed
2482     ranlib
2483     samples
2484     strip
2485     sws_max_filter_size
2486     sysinclude
2487     sysroot
2488     target_exec
2489     target_os
2490     target_path
2491     target_samples
2492     tempprefix
2493     toolchain
2494     valgrind
2495     windres
2496     x86asmexe
2497 "
2498
2499 CMDLINE_APPEND="
2500     extra_cflags
2501     extra_cxxflags
2502     extra_objcflags
2503     host_cppflags
2504 "
2505
2506 # code dependency declarations
2507
2508 # architecture extensions
2509
2510 armv5te_deps="arm"
2511 armv6_deps="arm"
2512 armv6t2_deps="arm"
2513 armv8_deps="aarch64"
2514 neon_deps_any="aarch64 arm"
2515 intrinsics_neon_deps="neon"
2516 vfp_deps_any="aarch64 arm"
2517 vfpv3_deps="vfp"
2518 setend_deps="arm"
2519
2520 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2521
2522 altivec_deps="ppc"
2523 dcbzl_deps="ppc"
2524 ldbrx_deps="ppc"
2525 ppc4xx_deps="ppc"
2526 vsx_deps="altivec"
2527 power8_deps="vsx"
2528
2529 loongson2_deps="mips"
2530 loongson3_deps="mips"
2531 mips32r2_deps="mips"
2532 mips32r5_deps="mips"
2533 mips32r6_deps="mips"
2534 mips64r2_deps="mips"
2535 mips64r6_deps="mips"
2536 mipsfpu_deps="mips"
2537 mipsdsp_deps="mips"
2538 mipsdspr2_deps="mips"
2539 mmi_deps="mips"
2540 msa_deps="mipsfpu"
2541 msa2_deps="msa"
2542
2543 cpunop_deps="i686"
2544 x86_64_select="i686"
2545 x86_64_suggest="fast_cmov"
2546
2547 amd3dnow_deps="mmx"
2548 amd3dnowext_deps="amd3dnow"
2549 i686_deps="x86"
2550 mmx_deps="x86"
2551 mmxext_deps="mmx"
2552 sse_deps="mmxext"
2553 sse2_deps="sse"
2554 sse3_deps="sse2"
2555 ssse3_deps="sse3"
2556 sse4_deps="ssse3"
2557 sse42_deps="sse4"
2558 aesni_deps="sse42"
2559 avx_deps="sse42"
2560 xop_deps="avx"
2561 fma3_deps="avx"
2562 fma4_deps="avx"
2563 avx2_deps="avx"
2564 avx512_deps="avx2"
2565
2566 mmx_external_deps="x86asm"
2567 mmx_inline_deps="inline_asm x86"
2568 mmx_suggest="mmx_external mmx_inline"
2569
2570 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2571     eval dep=\$${ext}_deps
2572     eval ${ext}_external_deps='"${dep}_external"'
2573     eval ${ext}_inline_deps='"${dep}_inline"'
2574     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2575 done
2576
2577 aligned_stack_if_any="aarch64 ppc x86"
2578 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2579 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2580 fast_unaligned_if_any="aarch64 ppc x86"
2581 simd_align_16_if_any="altivec neon sse"
2582 simd_align_32_if_any="avx"
2583 simd_align_64_if_any="avx512"
2584
2585 # system capabilities
2586 linux_perf_deps="linux_perf_event_h"
2587 symver_if_any="symver_asm_label symver_gnu_asm"
2588 valgrind_backtrace_conflict="optimizations"
2589 valgrind_backtrace_deps="valgrind_valgrind_h"
2590
2591 # threading support
2592 atomics_gcc_if="sync_val_compare_and_swap"
2593 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2594 atomics_win32_if="MemoryBarrier"
2595 atomics_native_if_any="$ATOMICS_LIST"
2596 w32threads_deps="atomics_native"
2597 threads_if_any="$THREADS_LIST"
2598
2599 # subsystems
2600 cbs_av1_select="cbs"
2601 cbs_h264_select="cbs"
2602 cbs_h265_select="cbs"
2603 cbs_jpeg_select="cbs"
2604 cbs_mpeg2_select="cbs"
2605 cbs_vp9_select="cbs"
2606 dct_select="rdft"
2607 dirac_parse_select="golomb"
2608 dnn_suggest="libtensorflow"
2609 error_resilience_select="me_cmp"
2610 faandct_deps="faan"
2611 faandct_select="fdctdsp"
2612 faanidct_deps="faan"
2613 faanidct_select="idctdsp"
2614 h264dsp_select="startcode"
2615 hevcparse_select="golomb"
2616 frame_thread_encoder_deps="encoders threads"
2617 intrax8_select="blockdsp idctdsp"
2618 mdct_select="fft"
2619 mdct15_select="fft"
2620 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2621 mpeg_er_select="error_resilience"
2622 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2623 mpegaudiodsp_select="dct"
2624 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2625 mpegvideoenc_select="aandcttables me_cmp mpegvideo pixblockdsp qpeldsp"
2626 vc1dsp_select="h264chroma qpeldsp startcode"
2627 rdft_select="fft"
2628
2629 # decoders / encoders
2630 aac_decoder_select="adts_header mdct15 mdct sinewin"
2631 aac_fixed_decoder_select="adts_header mdct sinewin"
2632 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2633 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2634 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2635 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2636 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2637 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2638 acelp_kelvin_decoder_select="audiodsp"
2639 adpcm_g722_decoder_select="g722dsp"
2640 adpcm_g722_encoder_select="g722dsp"
2641 aic_decoder_select="golomb idctdsp"
2642 alac_encoder_select="lpc"
2643 als_decoder_select="bswapdsp"
2644 amrnb_decoder_select="lsp"
2645 amrwb_decoder_select="lsp"
2646 amv_decoder_select="sp5x_decoder exif"
2647 amv_encoder_select="jpegtables mpegvideoenc"
2648 ape_decoder_select="bswapdsp llauddsp"
2649 apng_decoder_deps="zlib"
2650 apng_encoder_deps="zlib"
2651 apng_encoder_select="llvidencdsp"
2652 aptx_decoder_select="audio_frame_queue"
2653 aptx_encoder_select="audio_frame_queue"
2654 aptx_hd_decoder_select="audio_frame_queue"
2655 aptx_hd_encoder_select="audio_frame_queue"
2656 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2657 asv1_encoder_select="aandcttables bswapdsp fdctdsp pixblockdsp"
2658 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2659 asv2_encoder_select="aandcttables bswapdsp fdctdsp pixblockdsp"
2660 atrac1_decoder_select="mdct sinewin"
2661 atrac3_decoder_select="mdct"
2662 atrac3al_decoder_select="mdct"
2663 atrac3p_decoder_select="mdct sinewin"
2664 atrac3pal_decoder_select="mdct sinewin"
2665 atrac9_decoder_select="mdct"
2666 avrn_decoder_select="exif jpegtables"
2667 bink_decoder_select="blockdsp hpeldsp"
2668 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2669 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2670 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2671 clearvideo_decoder_select="idctdsp"
2672 cllc_decoder_select="bswapdsp"
2673 comfortnoise_encoder_select="lpc"
2674 cook_decoder_select="audiodsp mdct sinewin"
2675 cscd_decoder_select="lzo"
2676 cscd_decoder_suggest="zlib"
2677 dca_decoder_select="mdct"
2678 dca_encoder_select="mdct"
2679 dds_decoder_select="texturedsp"
2680 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2681 dnxhd_decoder_select="blockdsp idctdsp"
2682 dnxhd_encoder_select="blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2683 dolby_e_decoder_select="mdct"
2684 dvvideo_decoder_select="dvprofile idctdsp"
2685 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2686 dxa_decoder_deps="zlib"
2687 dxv_decoder_select="lzf texturedsp"
2688 eac3_decoder_select="ac3_decoder"
2689 eac3_encoder_select="ac3_encoder"
2690 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2691 eatgq_decoder_select="aandcttables"
2692 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2693 exr_decoder_deps="zlib"
2694 ffv1_decoder_select="rangecoder"
2695 ffv1_encoder_select="rangecoder"
2696 ffvhuff_decoder_select="huffyuv_decoder"
2697 ffvhuff_encoder_select="huffyuv_encoder"
2698 fic_decoder_select="golomb"
2699 flac_decoder_select="flacdsp"
2700 flac_encoder_select="bswapdsp flacdsp lpc"
2701 flashsv2_decoder_deps="zlib"
2702 flashsv2_encoder_deps="zlib"
2703 flashsv_decoder_deps="zlib"
2704 flashsv_encoder_deps="zlib"
2705 flv_decoder_select="h263_decoder"
2706 flv_encoder_select="h263_encoder"
2707 fourxm_decoder_select="blockdsp bswapdsp"
2708 fraps_decoder_select="bswapdsp huffman"
2709 g2m_decoder_deps="zlib"
2710 g2m_decoder_select="blockdsp idctdsp jpegtables"
2711 g729_decoder_select="audiodsp"
2712 h261_decoder_select="mpegvideo"
2713 h261_encoder_select="mpegvideoenc"
2714 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2715 h263_encoder_select="h263dsp mpegvideoenc"
2716 h263i_decoder_select="h263_decoder"
2717 h263p_decoder_select="h263_decoder"
2718 h263p_encoder_select="h263_encoder"
2719 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2720 h264_decoder_suggest="error_resilience"
2721 hap_decoder_select="snappy texturedsp"
2722 hap_encoder_deps="libsnappy"
2723 hap_encoder_select="texturedspenc"
2724 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2725 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2726 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2727 hymt_decoder_select="huffyuv_decoder"
2728 iac_decoder_select="imc_decoder"
2729 imc_decoder_select="bswapdsp fft mdct sinewin"
2730 imm4_decoder_select="bswapdsp"
2731 imm5_decoder_select="h264_decoder hevc_decoder"
2732 indeo3_decoder_select="hpeldsp"
2733 indeo4_decoder_select="ividsp"
2734 indeo5_decoder_select="ividsp"
2735 interplay_video_decoder_select="hpeldsp"
2736 jpegls_decoder_select="mjpeg_decoder"
2737 jv_decoder_select="blockdsp"
2738 lagarith_decoder_select="llviddsp"
2739 ljpeg_encoder_select="idctdsp jpegtables mpegvideoenc"
2740 lscr_decoder_deps="zlib"
2741 magicyuv_decoder_select="llviddsp"
2742 magicyuv_encoder_select="llvidencdsp"
2743 mdec_decoder_select="blockdsp bswapdsp idctdsp mpegvideo"
2744 metasound_decoder_select="lsp mdct sinewin"
2745 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2746 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2747 mjpeg_encoder_select="jpegtables mpegvideoenc"
2748 mjpegb_decoder_select="mjpeg_decoder"
2749 mlp_decoder_select="mlp_parser"
2750 mlp_encoder_select="lpc audio_frame_queue"
2751 motionpixels_decoder_select="bswapdsp"
2752 mp1_decoder_select="mpegaudio"
2753 mp1float_decoder_select="mpegaudio"
2754 mp2_decoder_select="mpegaudio"
2755 mp2float_decoder_select="mpegaudio"
2756 mp3_decoder_select="mpegaudio"
2757 mp3adu_decoder_select="mpegaudio"
2758 mp3adufloat_decoder_select="mpegaudio"
2759 mp3float_decoder_select="mpegaudio"
2760 mp3on4_decoder_select="mpegaudio"
2761 mp3on4float_decoder_select="mpegaudio"
2762 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2763 mpc8_decoder_select="mpegaudiodsp"
2764 mpegvideo_decoder_select="mpegvideo"
2765 mpeg1video_decoder_select="mpegvideo"
2766 mpeg1video_encoder_select="mpegvideoenc h263dsp"
2767 mpeg2video_decoder_select="mpegvideo"
2768 mpeg2video_encoder_select="mpegvideoenc h263dsp"
2769 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2770 mpeg4_encoder_select="h263_encoder"
2771 msa1_decoder_select="mss34dsp"
2772 mscc_decoder_deps="zlib"
2773 msmpeg4v1_decoder_select="h263_decoder"
2774 msmpeg4v2_decoder_select="h263_decoder"
2775 msmpeg4v2_encoder_select="h263_encoder"
2776 msmpeg4v3_decoder_select="h263_decoder"
2777 msmpeg4v3_encoder_select="h263_encoder"
2778 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2779 mts2_decoder_select="mss34dsp"
2780 mwsc_decoder_deps="zlib"
2781 mxpeg_decoder_select="mjpeg_decoder"
2782 nellymoser_decoder_select="mdct sinewin"
2783 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2784 nuv_decoder_select="idctdsp lzo"
2785 on2avc_decoder_select="mdct"
2786 opus_decoder_deps="swresample"
2787 opus_decoder_select="mdct15"
2788 opus_encoder_select="audio_frame_queue mdct15"
2789 png_decoder_deps="zlib"
2790 png_encoder_deps="zlib"
2791 png_encoder_select="llvidencdsp"
2792 prores_decoder_select="blockdsp idctdsp"
2793 prores_encoder_select="fdctdsp"
2794 qcelp_decoder_select="lsp"
2795 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2796 ra_144_decoder_select="audiodsp"
2797 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2798 ralf_decoder_select="golomb"
2799 rasc_decoder_deps="zlib"
2800 rawvideo_decoder_select="bswapdsp"
2801 rscc_decoder_deps="zlib"
2802 rtjpeg_decoder_select="me_cmp"
2803 rv10_decoder_select="h263_decoder"
2804 rv10_encoder_select="h263_encoder"
2805 rv20_decoder_select="h263_decoder"
2806 rv20_encoder_select="h263_encoder"
2807 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2808 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2809 screenpresso_decoder_deps="zlib"
2810 shorten_decoder_select="bswapdsp"
2811 sipr_decoder_select="lsp"
2812 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2813 snow_encoder_select="dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2814 sonic_decoder_select="golomb rangecoder"
2815 sonic_encoder_select="golomb rangecoder"
2816 sonic_ls_encoder_select="golomb rangecoder"
2817 sp5x_decoder_select="mjpeg_decoder"
2818 speedhq_decoder_select="mpegvideo"
2819 srgc_decoder_deps="zlib"
2820 svq1_decoder_select="hpeldsp"
2821 svq1_encoder_select="hpeldsp me_cmp mpegvideoenc"
2822 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2823 svq3_decoder_suggest="zlib"
2824 tak_decoder_select="audiodsp"
2825 tdsc_decoder_deps="zlib"
2826 tdsc_decoder_select="mjpeg_decoder"
2827 theora_decoder_select="vp3_decoder"
2828 thp_decoder_select="mjpeg_decoder"
2829 tiff_decoder_select="mjpeg_decoder"
2830 tiff_decoder_suggest="zlib lzma"
2831 tiff_encoder_suggest="zlib"
2832 truehd_decoder_select="mlp_parser"
2833 truehd_encoder_select="lpc audio_frame_queue"
2834 truemotion2_decoder_select="bswapdsp"
2835 truespeech_decoder_select="bswapdsp"
2836 tscc_decoder_deps="zlib"
2837 twinvq_decoder_select="mdct lsp sinewin"
2838 txd_decoder_select="texturedsp"
2839 utvideo_decoder_select="bswapdsp llviddsp"
2840 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2841 vble_decoder_select="llviddsp"
2842 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2843 vc1image_decoder_select="vc1_decoder"
2844 vorbis_decoder_select="mdct"
2845 vorbis_encoder_select="audio_frame_queue mdct"
2846 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2847 vp4_decoder_select="vp3_decoder"
2848 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2849 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2850 vp6a_decoder_select="vp6_decoder"
2851 vp6f_decoder_select="vp6_decoder"
2852 vp7_decoder_select="h264pred videodsp vp8dsp"
2853 vp8_decoder_select="h264pred videodsp vp8dsp"
2854 vp9_decoder_select="videodsp vp9_parser vp9_superframe_split_bsf"
2855 wcmv_decoder_deps="zlib"
2856 webp_decoder_select="vp8_decoder exif"
2857 wmalossless_decoder_select="llauddsp"
2858 wmapro_decoder_select="mdct sinewin wma_freqs"
2859 wmav1_decoder_select="mdct sinewin wma_freqs"
2860 wmav1_encoder_select="mdct sinewin wma_freqs"
2861 wmav2_decoder_select="mdct sinewin wma_freqs"
2862 wmav2_encoder_select="mdct sinewin wma_freqs"
2863 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2864 wmv1_decoder_select="h263_decoder"
2865 wmv1_encoder_select="h263_encoder"
2866 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2867 wmv2_encoder_select="h263_encoder wmv2dsp"
2868 wmv3_decoder_select="vc1_decoder"
2869 wmv3image_decoder_select="wmv3_decoder"
2870 xma1_decoder_select="wmapro_decoder"
2871 xma2_decoder_select="wmapro_decoder"
2872 ylc_decoder_select="bswapdsp"
2873 zerocodec_decoder_deps="zlib"
2874 zlib_decoder_deps="zlib"
2875 zlib_encoder_deps="zlib"
2876 zmbv_decoder_deps="zlib"
2877 zmbv_encoder_deps="zlib"
2878
2879 # hardware accelerators
2880 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2881 cuda_deps="ffnvcodec"
2882 cuvid_deps="ffnvcodec"
2883 d3d11va_deps="dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2884 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32 user32"
2885 ffnvcodec_deps_any="libdl LoadLibrary"
2886 nvdec_deps="ffnvcodec"
2887 vaapi_x11_deps="xlib"
2888 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2889 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2890 xvmc_deps="X11_extensions_XvMClib_h"
2891
2892 h263_vaapi_hwaccel_deps="vaapi"
2893 h263_vaapi_hwaccel_select="h263_decoder"
2894 h263_videotoolbox_hwaccel_deps="videotoolbox"
2895 h263_videotoolbox_hwaccel_select="h263_decoder"
2896 h264_d3d11va_hwaccel_deps="d3d11va"
2897 h264_d3d11va_hwaccel_select="h264_decoder"
2898 h264_d3d11va2_hwaccel_deps="d3d11va"
2899 h264_d3d11va2_hwaccel_select="h264_decoder"
2900 h264_dxva2_hwaccel_deps="dxva2"
2901 h264_dxva2_hwaccel_select="h264_decoder"
2902 h264_nvdec_hwaccel_deps="nvdec"
2903 h264_nvdec_hwaccel_select="h264_decoder"
2904 h264_vaapi_hwaccel_deps="vaapi"
2905 h264_vaapi_hwaccel_select="h264_decoder"
2906 h264_vdpau_hwaccel_deps="vdpau"
2907 h264_vdpau_hwaccel_select="h264_decoder"
2908 h264_videotoolbox_hwaccel_deps="videotoolbox"
2909 h264_videotoolbox_hwaccel_select="h264_decoder"
2910 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2911 hevc_d3d11va_hwaccel_select="hevc_decoder"
2912 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2913 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2914 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2915 hevc_dxva2_hwaccel_select="hevc_decoder"
2916 hevc_nvdec_hwaccel_deps="nvdec"
2917 hevc_nvdec_hwaccel_select="hevc_decoder"
2918 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2919 hevc_vaapi_hwaccel_select="hevc_decoder"
2920 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2921 hevc_vdpau_hwaccel_select="hevc_decoder"
2922 hevc_videotoolbox_hwaccel_deps="videotoolbox"
2923 hevc_videotoolbox_hwaccel_select="hevc_decoder"
2924 mjpeg_nvdec_hwaccel_deps="nvdec"
2925 mjpeg_nvdec_hwaccel_select="mjpeg_decoder"
2926 mjpeg_vaapi_hwaccel_deps="vaapi"
2927 mjpeg_vaapi_hwaccel_select="mjpeg_decoder"
2928 mpeg_xvmc_hwaccel_deps="xvmc"
2929 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2930 mpeg1_nvdec_hwaccel_deps="nvdec"
2931 mpeg1_nvdec_hwaccel_select="mpeg1video_decoder"
2932 mpeg1_vdpau_hwaccel_deps="vdpau"
2933 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2934 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2935 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2936 mpeg1_xvmc_hwaccel_deps="xvmc"
2937 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2938 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2939 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2940 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2941 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2942 mpeg2_dxva2_hwaccel_deps="dxva2"
2943 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2944 mpeg2_nvdec_hwaccel_deps="nvdec"
2945 mpeg2_nvdec_hwaccel_select="mpeg2video_decoder"
2946 mpeg2_vaapi_hwaccel_deps="vaapi"
2947 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2948 mpeg2_vdpau_hwaccel_deps="vdpau"
2949 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2950 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2951 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2952 mpeg2_xvmc_hwaccel_deps="xvmc"
2953 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2954 mpeg4_nvdec_hwaccel_deps="nvdec"
2955 mpeg4_nvdec_hwaccel_select="mpeg4_decoder"
2956 mpeg4_vaapi_hwaccel_deps="vaapi"
2957 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2958 mpeg4_vdpau_hwaccel_deps="vdpau"
2959 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2960 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2961 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2962 vc1_d3d11va_hwaccel_deps="d3d11va"
2963 vc1_d3d11va_hwaccel_select="vc1_decoder"
2964 vc1_d3d11va2_hwaccel_deps="d3d11va"
2965 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2966 vc1_dxva2_hwaccel_deps="dxva2"
2967 vc1_dxva2_hwaccel_select="vc1_decoder"
2968 vc1_nvdec_hwaccel_deps="nvdec"
2969 vc1_nvdec_hwaccel_select="vc1_decoder"
2970 vc1_vaapi_hwaccel_deps="vaapi"
2971 vc1_vaapi_hwaccel_select="vc1_decoder"
2972 vc1_vdpau_hwaccel_deps="vdpau"
2973 vc1_vdpau_hwaccel_select="vc1_decoder"
2974 vp8_nvdec_hwaccel_deps="nvdec"
2975 vp8_nvdec_hwaccel_select="vp8_decoder"
2976 vp8_vaapi_hwaccel_deps="vaapi"
2977 vp8_vaapi_hwaccel_select="vp8_decoder"
2978 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2979 vp9_d3d11va_hwaccel_select="vp9_decoder"
2980 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2981 vp9_d3d11va2_hwaccel_select="vp9_decoder"
2982 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2983 vp9_dxva2_hwaccel_select="vp9_decoder"
2984 vp9_nvdec_hwaccel_deps="nvdec"
2985 vp9_nvdec_hwaccel_select="vp9_decoder"
2986 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2987 vp9_vaapi_hwaccel_select="vp9_decoder"
2988 vp9_vdpau_hwaccel_deps="vdpau VdpPictureInfoVP9"
2989 vp9_vdpau_hwaccel_select="vp9_decoder"
2990 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2991 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2992 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2993 wmv3_nvdec_hwaccel_select="vc1_nvdec_hwaccel"
2994 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2995 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2996
2997 # hardware-accelerated codecs
2998 omx_deps="libdl pthreads"
2999 omx_rpi_select="omx"
3000 qsv_deps="libmfx"
3001 qsvdec_select="qsv"
3002 qsvenc_select="qsv"
3003 qsvvpp_select="qsv"
3004 vaapi_encode_deps="vaapi"
3005 v4l2_m2m_deps="linux_videodev2_h sem_timedwait"
3006
3007 hwupload_cuda_filter_deps="ffnvcodec"
3008 scale_npp_filter_deps="ffnvcodec libnpp"
3009 scale_cuda_filter_deps="ffnvcodec"
3010 scale_cuda_filter_deps_any="cuda_nvcc cuda_llvm"
3011 thumbnail_cuda_filter_deps="ffnvcodec"
3012 thumbnail_cuda_filter_deps_any="cuda_nvcc cuda_llvm"
3013 transpose_npp_filter_deps="ffnvcodec libnpp"
3014
3015 amf_deps_any="libdl LoadLibrary"
3016 nvenc_deps="ffnvcodec"
3017 nvenc_deps_any="libdl LoadLibrary"
3018 nvenc_encoder_deps="nvenc"
3019
3020 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
3021 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
3022 h264_amf_encoder_deps="amf"
3023 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
3024 h264_cuvid_decoder_deps="cuvid"
3025 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
3026 h264_mediacodec_decoder_deps="mediacodec"
3027 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
3028 h264_mmal_decoder_deps="mmal"
3029 h264_nvenc_encoder_deps="nvenc"
3030 h264_omx_encoder_deps="omx"
3031 h264_qsv_decoder_select="h264_mp4toannexb_bsf qsvdec"
3032 h264_qsv_encoder_select="qsvenc"
3033 h264_rkmpp_decoder_deps="rkmpp"
3034 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
3035 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
3036 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
3037 h264_v4l2m2m_decoder_select="h264_mp4toannexb_bsf"
3038 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
3039 hevc_amf_encoder_deps="amf"
3040 hevc_cuvid_decoder_deps="cuvid"
3041 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
3042 hevc_mediacodec_decoder_deps="mediacodec"
3043 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
3044 hevc_nvenc_encoder_deps="nvenc"
3045 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf qsvdec"
3046 hevc_qsv_encoder_select="hevcparse qsvenc"
3047 hevc_rkmpp_decoder_deps="rkmpp"
3048 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
3049 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
3050 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
3051 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
3052 hevc_v4l2m2m_decoder_select="hevc_mp4toannexb_bsf"
3053 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
3054 mjpeg_cuvid_decoder_deps="cuvid"
3055 mjpeg_qsv_decoder_select="qsvdec"
3056 mjpeg_qsv_encoder_deps="libmfx"
3057 mjpeg_qsv_encoder_select="qsvenc"
3058 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
3059 mjpeg_vaapi_encoder_select="cbs_jpeg jpegtables vaapi_encode"
3060 mpeg1_cuvid_decoder_deps="cuvid"
3061 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
3062 mpeg2_crystalhd_decoder_select="crystalhd"
3063 mpeg2_cuvid_decoder_deps="cuvid"
3064 mpeg2_mmal_decoder_deps="mmal"
3065 mpeg2_mediacodec_decoder_deps="mediacodec"
3066 mpeg2_qsv_decoder_select="qsvdec"
3067 mpeg2_qsv_encoder_select="qsvenc"
3068 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
3069 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
3070 mpeg4_crystalhd_decoder_select="crystalhd"
3071 mpeg4_cuvid_decoder_deps="cuvid"
3072 mpeg4_mediacodec_decoder_deps="mediacodec"
3073 mpeg4_mmal_decoder_deps="mmal"
3074 mpeg4_omx_encoder_deps="omx"
3075 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
3076 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
3077 msmpeg4_crystalhd_decoder_select="crystalhd"
3078 nvenc_h264_encoder_select="h264_nvenc_encoder"
3079 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
3080 vc1_crystalhd_decoder_select="crystalhd"
3081 vc1_cuvid_decoder_deps="cuvid"
3082 vc1_mmal_decoder_deps="mmal"
3083 vc1_qsv_decoder_select="qsvdec"
3084 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
3085 vp8_cuvid_decoder_deps="cuvid"
3086 vp8_mediacodec_decoder_deps="mediacodec"
3087 vp8_qsv_decoder_select="qsvdec"
3088 vp8_rkmpp_decoder_deps="rkmpp"
3089 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
3090 vp8_vaapi_encoder_select="vaapi_encode"
3091 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
3092 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
3093 vp9_cuvid_decoder_deps="cuvid"
3094 vp9_mediacodec_decoder_deps="mediacodec"
3095 vp9_qsv_decoder_select="qsvdec"
3096 vp9_rkmpp_decoder_deps="rkmpp"
3097 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
3098 vp9_vaapi_encoder_select="vaapi_encode"
3099 vp9_qsv_encoder_deps="libmfx MFX_CODEC_VP9"
3100 vp9_qsv_encoder_select="qsvenc"
3101 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
3102 wmv3_crystalhd_decoder_select="crystalhd"
3103
3104 # parsers
3105 aac_parser_select="adts_header"
3106 av1_parser_select="cbs_av1"
3107 h264_parser_select="golomb h264dsp h264parse"
3108 hevc_parser_select="hevcparse"
3109 mpegaudio_parser_select="mpegaudioheader"
3110 mpegvideo_parser_select="mpegvideo"
3111 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
3112 vc1_parser_select="vc1dsp"
3113
3114 # bitstream_filters
3115 aac_adtstoasc_bsf_select="adts_header"
3116 av1_frame_split_bsf_select="cbs_av1"
3117 av1_metadata_bsf_select="cbs_av1"
3118 eac3_core_bsf_select="ac3_parser"
3119 filter_units_bsf_select="cbs"
3120 h264_metadata_bsf_deps="const_nan"
3121 h264_metadata_bsf_select="cbs_h264"
3122 h264_redundant_pps_bsf_select="cbs_h264"
3123 hevc_metadata_bsf_select="cbs_h265"
3124 mjpeg2jpeg_bsf_select="jpegtables"
3125 mpeg2_metadata_bsf_select="cbs_mpeg2"
3126 trace_headers_bsf_select="cbs"
3127 vp9_metadata_bsf_select="cbs_vp9"
3128
3129 # external libraries
3130 aac_at_decoder_deps="audiotoolbox"
3131 aac_at_decoder_select="aac_adtstoasc_bsf"
3132 ac3_at_decoder_deps="audiotoolbox"
3133 ac3_at_decoder_select="ac3_parser"
3134 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
3135 alac_at_decoder_deps="audiotoolbox"
3136 amr_nb_at_decoder_deps="audiotoolbox"
3137 avisynth_deps_any="libdl LoadLibrary"
3138 avisynth_demuxer_deps="avisynth"
3139 avisynth_demuxer_select="riffdec"
3140 eac3_at_decoder_deps="audiotoolbox"
3141 eac3_at_decoder_select="ac3_parser"
3142 gsm_ms_at_decoder_deps="audiotoolbox"
3143 ilbc_at_decoder_deps="audiotoolbox"
3144 mp1_at_decoder_deps="audiotoolbox"
3145 mp2_at_decoder_deps="audiotoolbox"
3146 mp3_at_decoder_deps="audiotoolbox"
3147 mp1_at_decoder_select="mpegaudioheader"
3148 mp2_at_decoder_select="mpegaudioheader"
3149 mp3_at_decoder_select="mpegaudioheader"
3150 pcm_alaw_at_decoder_deps="audiotoolbox"
3151 pcm_mulaw_at_decoder_deps="audiotoolbox"
3152 qdmc_decoder_select="fft"
3153 qdmc_at_decoder_deps="audiotoolbox"
3154 qdm2_at_decoder_deps="audiotoolbox"
3155 aac_at_encoder_deps="audiotoolbox"
3156 aac_at_encoder_select="audio_frame_queue"
3157 alac_at_encoder_deps="audiotoolbox"
3158 alac_at_encoder_select="audio_frame_queue"
3159 ilbc_at_encoder_deps="audiotoolbox"
3160 ilbc_at_encoder_select="audio_frame_queue"
3161 pcm_alaw_at_encoder_deps="audiotoolbox"
3162 pcm_alaw_at_encoder_select="audio_frame_queue"
3163 pcm_mulaw_at_encoder_deps="audiotoolbox"
3164 pcm_mulaw_at_encoder_select="audio_frame_queue"
3165 chromaprint_muxer_deps="chromaprint"
3166 h264_videotoolbox_encoder_deps="pthreads"
3167 h264_videotoolbox_encoder_select="videotoolbox_encoder"
3168 hevc_videotoolbox_encoder_deps="pthreads"
3169 hevc_videotoolbox_encoder_select="videotoolbox_encoder"
3170 libaom_av1_decoder_deps="libaom"
3171 libaom_av1_encoder_deps="libaom"
3172 libaom_av1_encoder_select="extract_extradata_bsf"
3173 libaribb24_decoder_deps="libaribb24"
3174 libcelt_decoder_deps="libcelt"
3175 libcodec2_decoder_deps="libcodec2"
3176 libcodec2_encoder_deps="libcodec2"
3177 libdav1d_decoder_deps="libdav1d"
3178 libdavs2_decoder_deps="libdavs2"
3179 libfdk_aac_decoder_deps="libfdk_aac"
3180 libfdk_aac_encoder_deps="libfdk_aac"
3181 libfdk_aac_encoder_select="audio_frame_queue"
3182 libgme_demuxer_deps="libgme"
3183 libgsm_decoder_deps="libgsm"
3184 libgsm_encoder_deps="libgsm"
3185 libgsm_ms_decoder_deps="libgsm"
3186 libgsm_ms_encoder_deps="libgsm"
3187 libilbc_decoder_deps="libilbc"
3188 libilbc_encoder_deps="libilbc"
3189 libkvazaar_encoder_deps="libkvazaar"
3190 libmodplug_demuxer_deps="libmodplug"
3191 libmp3lame_encoder_deps="libmp3lame"
3192 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
3193 libopencore_amrnb_decoder_deps="libopencore_amrnb"
3194 libopencore_amrnb_encoder_deps="libopencore_amrnb"
3195 libopencore_amrnb_encoder_select="audio_frame_queue"
3196 libopencore_amrwb_decoder_deps="libopencore_amrwb"
3197 libopenh264_decoder_deps="libopenh264"
3198 libopenh264_decoder_select="h264_mp4toannexb_bsf"
3199 libopenh264_encoder_deps="libopenh264"
3200 libopenjpeg_decoder_deps="libopenjpeg"
3201 libopenjpeg_encoder_deps="libopenjpeg"
3202 libopenmpt_demuxer_deps="libopenmpt"
3203 libopus_decoder_deps="libopus"
3204 libopus_encoder_deps="libopus"
3205 libopus_encoder_select="audio_frame_queue"
3206 librsvg_decoder_deps="librsvg"
3207 libshine_encoder_deps="libshine"
3208 libshine_encoder_select="audio_frame_queue"
3209 libspeex_decoder_deps="libspeex"
3210 libspeex_encoder_deps="libspeex"
3211 libspeex_encoder_select="audio_frame_queue"
3212 libtheora_encoder_deps="libtheora"
3213 libtwolame_encoder_deps="libtwolame"
3214 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
3215 libvorbis_decoder_deps="libvorbis"
3216 libvorbis_encoder_deps="libvorbis libvorbisenc"
3217 libvorbis_encoder_select="audio_frame_queue"
3218 libvpx_vp8_decoder_deps="libvpx"
3219 libvpx_vp8_encoder_deps="libvpx"
3220 libvpx_vp9_decoder_deps="libvpx"
3221 libvpx_vp9_encoder_deps="libvpx"
3222 libwavpack_encoder_deps="libwavpack"
3223 libwavpack_encoder_select="audio_frame_queue"
3224 libwebp_encoder_deps="libwebp"
3225 libwebp_anim_encoder_deps="libwebp"
3226 libx262_encoder_deps="libx262"
3227 libx264_encoder_deps="libx264"
3228 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
3229 libx264rgb_encoder_select="libx264_encoder"
3230 libx265_encoder_deps="libx265"
3231 libxavs_encoder_deps="libxavs"
3232 libxavs2_encoder_deps="libxavs2"
3233 libxvid_encoder_deps="libxvid"
3234 libzvbi_teletext_decoder_deps="libzvbi"
3235 vapoursynth_demuxer_deps="vapoursynth"
3236 videotoolbox_suggest="coreservices"
3237 videotoolbox_deps="corefoundation coremedia corevideo"
3238 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
3239
3240 # demuxers / muxers
3241 ac3_demuxer_select="ac3_parser"
3242 act_demuxer_select="riffdec"
3243 aiff_muxer_select="iso_media"
3244 asf_demuxer_select="riffdec"
3245 asf_o_demuxer_select="riffdec"
3246 asf_muxer_select="riffenc"
3247 asf_stream_muxer_select="asf_muxer"
3248 avi_demuxer_select="iso_media riffdec exif"
3249 avi_muxer_select="riffenc"
3250 caf_demuxer_select="iso_media riffdec"
3251 caf_muxer_select="iso_media"
3252 dash_muxer_select="mp4_muxer"
3253 dash_demuxer_deps="libxml2"
3254 dirac_demuxer_select="dirac_parser"
3255 dts_demuxer_select="dca_parser"
3256 dtshd_demuxer_select="dca_parser"
3257 dv_demuxer_select="dvprofile"
3258 dv_muxer_select="dvprofile"
3259 dxa_demuxer_select="riffdec"
3260 eac3_demuxer_select="ac3_parser"
3261 f4v_muxer_select="mov_muxer"
3262 fifo_muxer_deps="threads"
3263 flac_demuxer_select="flac_parser"
3264 hds_muxer_select="flv_muxer"
3265 hls_muxer_select="mpegts_muxer"
3266 hls_muxer_suggest="gcrypt openssl"
3267 image2_alias_pix_demuxer_select="image2_demuxer"
3268 image2_brender_pix_demuxer_select="image2_demuxer"
3269 ipod_muxer_select="mov_muxer"
3270 ismv_muxer_select="mov_muxer"
3271 ivf_muxer_select="av1_metadata_bsf vp9_superframe_bsf"
3272 matroska_audio_muxer_select="matroska_muxer"
3273 matroska_demuxer_select="iso_media riffdec"
3274 matroska_demuxer_suggest="bzlib lzo zlib"
3275 matroska_muxer_select="iso_media riffenc"
3276 mmf_muxer_select="riffenc"
3277 mov_demuxer_select="iso_media riffdec"
3278 mov_demuxer_suggest="zlib"
3279 mov_muxer_select="iso_media riffenc rtpenc_chain"
3280 mp3_demuxer_select="mpegaudio_parser"
3281 mp3_muxer_select="mpegaudioheader"
3282 mp4_muxer_select="mov_muxer"
3283 mpegts_demuxer_select="iso_media"
3284 mpegts_muxer_select="adts_muxer latm_muxer"
3285 mpegtsraw_demuxer_select="mpegts_demuxer"
3286 mxf_muxer_select="golomb"
3287 mxf_d10_muxer_select="mxf_muxer"
3288 mxf_opatom_muxer_select="mxf_muxer"
3289 nut_muxer_select="riffenc"
3290 nuv_demuxer_select="riffdec"
3291 oga_muxer_select="ogg_muxer"
3292 ogg_demuxer_select="dirac_parse"
3293 ogv_muxer_select="ogg_muxer"
3294 opus_muxer_select="ogg_muxer"
3295 psp_muxer_select="mov_muxer"
3296 rtp_demuxer_select="sdp_demuxer"
3297 rtp_muxer_select="golomb jpegtables"
3298 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3299 rtsp_demuxer_select="http_protocol rtpdec"
3300 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3301 sap_demuxer_select="sdp_demuxer"
3302 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3303 sdp_demuxer_select="rtpdec"
3304 smoothstreaming_muxer_select="ismv_muxer"
3305 spdif_demuxer_select="adts_header"
3306 spdif_muxer_select="adts_header"
3307 spx_muxer_select="ogg_muxer"
3308 swf_demuxer_suggest="zlib"
3309 tak_demuxer_select="tak_parser"
3310 tg2_muxer_select="mov_muxer"
3311 tgp_muxer_select="mov_muxer"
3312 vobsub_demuxer_select="mpegps_demuxer"
3313 w64_demuxer_select="wav_demuxer"
3314 w64_muxer_select="wav_muxer"
3315 wav_demuxer_select="riffdec"
3316 wav_muxer_select="riffenc"
3317 webm_muxer_select="iso_media riffenc"
3318 webm_dash_manifest_demuxer_select="matroska_demuxer"
3319 wtv_demuxer_select="mpegts_demuxer riffdec"
3320 wtv_muxer_select="mpegts_muxer riffenc"
3321 xmv_demuxer_select="riffdec"
3322 xwma_demuxer_select="riffdec"
3323
3324 # indevs / outdevs
3325 android_camera_indev_deps="android camera2ndk mediandk pthreads"
3326 android_camera_indev_extralibs="-landroid -lcamera2ndk -lmediandk"
3327 alsa_indev_deps="alsa"
3328 alsa_outdev_deps="alsa"
3329 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3330 avfoundation_indev_suggest="coregraphics applicationservices"
3331 avfoundation_indev_extralibs="-framework Foundation"
3332 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3333 caca_outdev_deps="libcaca"
3334 decklink_deps_any="libdl LoadLibrary"
3335 decklink_indev_deps="decklink threads"
3336 decklink_indev_extralibs="-lstdc++"
3337 decklink_outdev_deps="decklink threads"
3338 decklink_outdev_suggest="libklvanc"
3339 decklink_outdev_extralibs="-lstdc++"
3340 dshow_indev_deps="IBaseFilter"
3341 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3342 fbdev_indev_deps="linux_fb_h"
3343 fbdev_outdev_deps="linux_fb_h"
3344 gdigrab_indev_deps="CreateDIBSection"
3345 gdigrab_indev_extralibs="-lgdi32"
3346 gdigrab_indev_select="bmp_decoder"
3347 iec61883_indev_deps="libiec61883"
3348 jack_indev_deps="libjack"
3349 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3350 kmsgrab_indev_deps="libdrm"
3351 lavfi_indev_deps="avfilter"
3352 libcdio_indev_deps="libcdio"
3353 libdc1394_indev_deps="libdc1394"
3354 openal_indev_deps="openal"
3355 opengl_outdev_deps="opengl"
3356 opengl_outdev_suggest="sdl2"
3357 oss_indev_deps_any="sys_soundcard_h"
3358 oss_outdev_deps_any="sys_soundcard_h"
3359 pulse_indev_deps="libpulse"
3360 pulse_outdev_deps="libpulse"
3361 sdl2_outdev_deps="sdl2"
3362 sndio_indev_deps="sndio"
3363 sndio_outdev_deps="sndio"
3364 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3365 v4l2_indev_suggest="libv4l2"
3366 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3367 v4l2_outdev_suggest="libv4l2"
3368 vfwcap_indev_deps="vfw32 vfwcap_defines"
3369 xcbgrab_indev_deps="libxcb"
3370 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3371 xv_outdev_deps="xlib"
3372
3373 # protocols
3374 async_protocol_deps="threads"
3375 bluray_protocol_deps="libbluray"
3376 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3377 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl mbedtls"
3378 ffrtmpcrypt_protocol_select="tcp_protocol"
3379 ffrtmphttp_protocol_conflict="librtmp_protocol"
3380 ffrtmphttp_protocol_select="http_protocol"
3381 ftp_protocol_select="tcp_protocol"
3382 gopher_protocol_select="network"
3383 http_protocol_select="tcp_protocol"
3384 http_protocol_suggest="zlib"
3385 httpproxy_protocol_select="tcp_protocol"
3386 httpproxy_protocol_suggest="zlib"
3387 https_protocol_select="tls_protocol"
3388 https_protocol_suggest="zlib"
3389 icecast_protocol_select="http_protocol"
3390 mmsh_protocol_select="http_protocol"
3391 mmst_protocol_select="network"
3392 rtmp_protocol_conflict="librtmp_protocol"
3393 rtmp_protocol_select="tcp_protocol"
3394 rtmp_protocol_suggest="zlib"
3395 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3396 rtmpe_protocol_suggest="zlib"
3397 rtmps_protocol_conflict="librtmp_protocol"
3398 rtmps_protocol_select="tls_protocol"
3399 rtmps_protocol_suggest="zlib"
3400 rtmpt_protocol_select="ffrtmphttp_protocol"
3401 rtmpt_protocol_suggest="zlib"
3402 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3403 rtmpte_protocol_suggest="zlib"
3404 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3405 rtmpts_protocol_suggest="zlib"
3406 rtp_protocol_select="udp_protocol"
3407 schannel_conflict="openssl gnutls libtls mbedtls"
3408 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3409 sctp_protocol_select="network"
3410 securetransport_conflict="openssl gnutls libtls mbedtls"
3411 srtp_protocol_select="rtp_protocol srtp"
3412 tcp_protocol_select="network"
3413 tls_protocol_deps_any="gnutls openssl schannel securetransport libtls mbedtls"
3414 tls_protocol_select="tcp_protocol"
3415 udp_protocol_select="network"
3416 udplite_protocol_select="network"
3417 unix_protocol_deps="sys_un_h"
3418 unix_protocol_select="network"
3419
3420 # external library protocols
3421 librtmp_protocol_deps="librtmp"
3422 librtmpe_protocol_deps="librtmp"
3423 librtmps_protocol_deps="librtmp"
3424 librtmpt_protocol_deps="librtmp"
3425 librtmpte_protocol_deps="librtmp"
3426 libsmbclient_protocol_deps="libsmbclient gplv3"
3427 libsrt_protocol_deps="libsrt"
3428 libsrt_protocol_select="network"
3429 libssh_protocol_deps="libssh"
3430 libtls_conflict="openssl gnutls mbedtls"
3431 libzmq_protocol_deps="libzmq"
3432 libzmq_protocol_select="network"
3433
3434 # filters
3435 afftdn_filter_deps="avcodec"
3436 afftdn_filter_select="fft"
3437 afftfilt_filter_deps="avcodec"
3438 afftfilt_filter_select="fft"
3439 afir_filter_deps="avcodec"
3440 afir_filter_select="fft"
3441 amovie_filter_deps="avcodec avformat"
3442 aresample_filter_deps="swresample"
3443 asr_filter_deps="pocketsphinx"
3444 ass_filter_deps="libass"
3445 atempo_filter_deps="avcodec"
3446 atempo_filter_select="rdft"
3447 avgblur_opencl_filter_deps="opencl"
3448 azmq_filter_deps="libzmq"
3449 blackframe_filter_deps="gpl"
3450 bm3d_filter_deps="avcodec"
3451 bm3d_filter_select="dct"
3452 boxblur_filter_deps="gpl"
3453 boxblur_opencl_filter_deps="opencl gpl"
3454 bs2b_filter_deps="libbs2b"
3455 colorkey_opencl_filter_deps="opencl"
3456 colormatrix_filter_deps="gpl"
3457 convolution_opencl_filter_deps="opencl"
3458 convolve_filter_deps="avcodec"
3459 convolve_filter_select="fft"
3460 coreimage_filter_deps="coreimage appkit"
3461 coreimage_filter_extralibs="-framework OpenGL"
3462 coreimagesrc_filter_deps="coreimage appkit"
3463 coreimagesrc_filter_extralibs="-framework OpenGL"
3464 cover_rect_filter_deps="avcodec avformat gpl"
3465 cropdetect_filter_deps="gpl"
3466 deconvolve_filter_deps="avcodec"
3467 deconvolve_filter_select="fft"
3468 deinterlace_qsv_filter_deps="libmfx"
3469 deinterlace_vaapi_filter_deps="vaapi"
3470 delogo_filter_deps="gpl"
3471 denoise_vaapi_filter_deps="vaapi"
3472 derain_filter_select="dnn"
3473 deshake_filter_select="pixelutils"
3474 deshake_opencl_filter_deps="opencl"
3475 dilation_opencl_filter_deps="opencl"
3476 drawtext_filter_deps="libfreetype"
3477 drawtext_filter_suggest="libfontconfig libfribidi"
3478 elbg_filter_deps="avcodec"
3479 eq_filter_deps="gpl"
3480 erosion_opencl_filter_deps="opencl"
3481 fftfilt_filter_deps="avcodec"
3482 fftfilt_filter_select="rdft"
3483 fftdnoiz_filter_deps="avcodec"
3484 fftdnoiz_filter_select="fft"
3485 find_rect_filter_deps="avcodec avformat gpl"
3486 firequalizer_filter_deps="avcodec"
3487 firequalizer_filter_select="rdft"
3488 flite_filter_deps="libflite"
3489 framerate_filter_select="scene_sad"
3490 freezedetect_filter_select="scene_sad"
3491 frei0r_filter_deps="frei0r libdl"
3492 frei0r_src_filter_deps="frei0r libdl"
3493 fspp_filter_deps="gpl"
3494 geq_filter_deps="gpl"
3495 histeq_filter_deps="gpl"
3496 hqdn3d_filter_deps="gpl"
3497 interlace_filter_deps="gpl"
3498 kerndeint_filter_deps="gpl"
3499 ladspa_filter_deps="ladspa libdl"
3500 lensfun_filter_deps="liblensfun version3"
3501 lv2_filter_deps="lv2"
3502 mcdeint_filter_deps="avcodec gpl"
3503 movie_filter_deps="avcodec avformat"
3504 mpdecimate_filter_deps="gpl"
3505 mpdecimate_filter_select="pixelutils"
3506 minterpolate_filter_select="scene_sad"
3507 mptestsrc_filter_deps="gpl"
3508 negate_filter_deps="lut_filter"
3509 nlmeans_opencl_filter_deps="opencl"
3510 nnedi_filter_deps="gpl"
3511 ocr_filter_deps="libtesseract"
3512 ocv_filter_deps="libopencv"
3513 openclsrc_filter_deps="opencl"
3514 overlay_opencl_filter_deps="opencl"
3515 overlay_qsv_filter_deps="libmfx"
3516 overlay_qsv_filter_select="qsvvpp"
3517 owdenoise_filter_deps="gpl"
3518 pan_filter_deps="swresample"
3519 perspective_filter_deps="gpl"
3520 phase_filter_deps="gpl"
3521 pp7_filter_deps="gpl"
3522 pp_filter_deps="gpl postproc"
3523 prewitt_opencl_filter_deps="opencl"
3524 procamp_vaapi_filter_deps="vaapi"
3525 program_opencl_filter_deps="opencl"
3526 pullup_filter_deps="gpl"
3527 removelogo_filter_deps="avcodec avformat swscale"
3528 repeatfields_filter_deps="gpl"
3529 resample_filter_deps="avresample"
3530 roberts_opencl_filter_deps="opencl"
3531 rubberband_filter_deps="librubberband"
3532 sab_filter_deps="gpl swscale"
3533 scale2ref_filter_deps="swscale"
3534 scale_filter_deps="swscale"
3535 scale_qsv_filter_deps="libmfx"
3536 select_filter_select="scene_sad"
3537 sharpness_vaapi_filter_deps="vaapi"
3538 showcqt_filter_deps="avcodec avformat swscale"
3539 showcqt_filter_suggest="libfontconfig libfreetype"
3540 showcqt_filter_select="fft"
3541 showfreqs_filter_deps="avcodec"
3542 showfreqs_filter_select="fft"
3543 showspectrum_filter_deps="avcodec"
3544 showspectrum_filter_select="fft"
3545 showspectrumpic_filter_deps="avcodec"
3546 showspectrumpic_filter_select="fft"
3547 signature_filter_deps="gpl avcodec avformat"
3548 smartblur_filter_deps="gpl swscale"
3549 sobel_opencl_filter_deps="opencl"
3550 sofalizer_filter_deps="libmysofa avcodec"
3551 sofalizer_filter_select="fft"
3552 spectrumsynth_filter_deps="avcodec"
3553 spectrumsynth_filter_select="fft"
3554 spp_filter_deps="gpl avcodec"
3555 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3556 sr_filter_deps="avformat swscale"
3557 sr_filter_select="dnn"
3558 stereo3d_filter_deps="gpl"
3559 subtitles_filter_deps="avformat avcodec libass"
3560 super2xsai_filter_deps="gpl"
3561 pixfmts_super2xsai_test_deps="super2xsai_filter"
3562 tinterlace_filter_deps="gpl"
3563 tinterlace_merge_test_deps="tinterlace_filter"
3564 tinterlace_pad_test_deps="tinterlace_filter"
3565 tonemap_filter_deps="const_nan"
3566 tonemap_opencl_filter_deps="opencl const_nan"
3567 transpose_opencl_filter_deps="opencl"
3568 transpose_vaapi_filter_deps="vaapi VAProcPipelineCaps_rotation_flags"
3569 unsharp_opencl_filter_deps="opencl"
3570 uspp_filter_deps="gpl avcodec"
3571 vaguedenoiser_filter_deps="gpl"
3572 vidstabdetect_filter_deps="libvidstab"
3573 vidstabtransform_filter_deps="libvidstab"
3574 libvmaf_filter_deps="libvmaf pthreads"
3575 zmq_filter_deps="libzmq"
3576 zoompan_filter_deps="swscale"
3577 zscale_filter_deps="libzimg const_nan"
3578 scale_vaapi_filter_deps="vaapi"
3579 vpp_qsv_filter_deps="libmfx"
3580 vpp_qsv_filter_select="qsvvpp"
3581 yadif_cuda_filter_deps="ffnvcodec"
3582 yadif_cuda_filter_deps_any="cuda_nvcc cuda_llvm"
3583
3584 # examples
3585 avio_dir_cmd_deps="avformat avutil"
3586 avio_reading_deps="avformat avcodec avutil"
3587 decode_audio_example_deps="avcodec avutil"
3588 decode_video_example_deps="avcodec avutil"
3589 demuxing_decoding_example_deps="avcodec avformat avutil"
3590 encode_audio_example_deps="avcodec avutil"
3591 encode_video_example_deps="avcodec avutil"
3592 extract_mvs_example_deps="avcodec avformat avutil"
3593 filter_audio_example_deps="avfilter avutil"
3594 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3595 filtering_video_example_deps="avfilter avcodec avformat avutil"
3596 http_multiclient_example_deps="avformat avutil fork"
3597 hw_decode_example_deps="avcodec avformat avutil"
3598 metadata_example_deps="avformat avutil"
3599 muxing_example_deps="avcodec avformat avutil swscale"
3600 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3601 remuxing_example_deps="avcodec avformat avutil"
3602 resampling_audio_example_deps="avutil swresample"
3603 scaling_video_example_deps="avutil swscale"
3604 transcode_aac_example_deps="avcodec avformat swresample"
3605 transcoding_example_deps="avfilter avcodec avformat avutil"
3606 vaapi_encode_example_deps="avcodec avutil h264_vaapi_encoder"
3607 vaapi_transcode_example_deps="avcodec avformat avutil h264_vaapi_encoder"
3608
3609 # EXTRALIBS_LIST
3610 cpu_init_extralibs="pthreads_extralibs"
3611 cws2fws_extralibs="zlib_extralibs"
3612
3613 # libraries, in any order
3614 avcodec_deps="avutil"
3615 avcodec_suggest="libm"
3616 avcodec_select="null_bsf"
3617 avdevice_deps="avformat avcodec avutil"
3618 avdevice_suggest="libm"
3619 avfilter_deps="avutil"
3620 avfilter_suggest="libm"
3621 avformat_deps="avcodec avutil"
3622 avformat_suggest="libm network zlib"
3623 avresample_deps="avutil"
3624 avresample_suggest="libm"
3625 avutil_suggest="clock_gettime ffnvcodec libm libdrm libmfx opencl user32 vaapi videotoolbox corefoundation corevideo coremedia bcrypt"
3626 postproc_deps="avutil gpl"
3627 postproc_suggest="libm"
3628 swresample_deps="avutil"
3629 swresample_suggest="libm libsoxr"
3630 swscale_deps="avutil"
3631 swscale_suggest="libm"
3632
3633 avcodec_extralibs="pthreads_extralibs iconv_extralibs dxva2_extralibs"
3634 avfilter_extralibs="pthreads_extralibs"
3635 avutil_extralibs="d3d11va_extralibs nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3636
3637 # programs
3638 ffmpeg_deps="avcodec avfilter avformat"
3639 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3640                hflip_filter null_filter
3641                transpose_filter trim_filter vflip_filter"
3642 ffmpeg_suggest="ole32 psapi shell32"
3643 ffplay_deps="avcodec avformat swscale swresample sdl2"
3644 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3645 ffplay_suggest="shell32"
3646 ffprobe_deps="avcodec avformat"
3647 ffprobe_suggest="shell32"
3648
3649 # documentation
3650 podpages_deps="perl"
3651 manpages_deps="perl pod2man"
3652 htmlpages_deps="perl"
3653 htmlpages_deps_any="makeinfo_html texi2html"
3654 txtpages_deps="perl makeinfo"
3655 doc_deps_any="manpages htmlpages podpages txtpages"
3656
3657 # default parameters
3658
3659 logfile="ffbuild/config.log"
3660
3661 # installation paths
3662 prefix_default="/usr/local"
3663 bindir_default='${prefix}/bin'
3664 datadir_default='${prefix}/share/ffmpeg'
3665 docdir_default='${prefix}/share/doc/ffmpeg'
3666 incdir_default='${prefix}/include'
3667 libdir_default='${prefix}/lib'
3668 mandir_default='${prefix}/share/man'
3669
3670 # toolchain
3671 ar_default="ar"
3672 cc_default="gcc"
3673 cxx_default="g++"
3674 host_cc_default="gcc"
3675 doxygen_default="doxygen"
3676 install="install"
3677 ln_s_default="ln -s -f"
3678 nm_default="nm -g"
3679 pkg_config_default=pkg-config
3680 ranlib_default="ranlib"
3681 strip_default="strip"
3682 version_script='--version-script'
3683 objformat="elf32"
3684 x86asmexe_default="nasm"
3685 windres_default="windres"
3686 striptype="direct"
3687
3688 # OS
3689 target_os_default=$(tolower $(uname -s))
3690 host_os=$target_os_default
3691
3692 # machine
3693 if test "$target_os_default" = aix; then
3694     arch_default=$(uname -p)
3695     strip_default="strip -X32_64"
3696     nm_default="nm -g -X32_64"
3697 else
3698     arch_default=$(uname -m)
3699 fi
3700 cpu="generic"
3701 intrinsics="none"
3702
3703 # configurable options
3704 enable $PROGRAM_LIST
3705 enable $DOCUMENT_LIST
3706 enable $EXAMPLE_LIST
3707 enable $(filter_out avresample $LIBRARY_LIST)
3708 enable stripping
3709
3710 enable asm
3711 enable debug
3712 enable doc
3713 enable faan faandct faanidct
3714 enable optimizations
3715 enable runtime_cpudetect
3716 enable safe_bitstream_reader
3717 enable static
3718 enable swscale_alpha
3719 enable valgrind_backtrace
3720
3721 sws_max_filter_size_default=256
3722 set_default sws_max_filter_size
3723
3724 # internal components are enabled by default
3725 enable $EXTRALIBS_LIST
3726
3727 # Avoid external, non-system, libraries getting enabled by dependency resolution
3728 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3729
3730 # build settings
3731 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3732 LIBPREF="lib"
3733 LIBSUF=".a"
3734 FULLNAME='$(NAME)$(BUILDSUF)'
3735 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3736 SLIBPREF="lib"
3737 SLIBSUF=".so"
3738 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3739 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3740 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3741 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3742 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3743 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3744 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3745
3746 asflags_filter=echo
3747 cflags_filter=echo
3748 ldflags_filter=echo
3749
3750 AS_C='-c'
3751 AS_O='-o $@'
3752 CC_C='-c'
3753 CC_E='-E -o $@'
3754 CC_O='-o $@'
3755 CXX_C='-c'
3756 CXX_O='-o $@'
3757 OBJCC_C='-c'
3758 OBJCC_E='-E -o $@'
3759 OBJCC_O='-o $@'
3760 X86ASM_O='-o $@'
3761 LD_O='-o $@'
3762 LD_LIB='-l%'
3763 LD_PATH='-L'
3764 HOSTCC_C='-c'
3765 HOSTCC_E='-E -o $@'
3766 HOSTCC_O='-o $@'
3767 HOSTLD_O='-o $@'
3768 NVCC_C='-c'
3769 NVCC_O='-o $@'
3770
3771 host_extralibs='-lm'
3772 host_cflags_filter=echo
3773 host_ldflags_filter=echo
3774
3775 target_path='$(CURDIR)'
3776
3777 # since the object filename is not given with the -MM flag, the compiler
3778 # is only able to print the basename, and we must add the path ourselves
3779 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3780 DEPFLAGS='-MM'
3781
3782 mkdir -p ffbuild
3783
3784 # find source path
3785 if test -f configure; then
3786     source_path=.
3787 elif test -f src/configure; then
3788     source_path=src
3789 else
3790     source_path=$(cd $(dirname "$0"); pwd)
3791     case "$source_path" in
3792         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3793     esac
3794     test -e "$source_path/config.h" &&
3795         die "Out of tree builds are impossible with config.h in source dir."
3796 fi
3797
3798 for v in "$@"; do
3799     r=${v#*=}
3800     l=${v%"$r"}
3801     r=$(sh_quote "$r")
3802     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3803 done
3804
3805 find_things_extern(){
3806     thing=$1
3807     pattern=$2
3808     file=$source_path/$3
3809     out=${4:-$thing}
3810     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$out/p" "$file"
3811 }
3812
3813 find_filters_extern(){
3814     file=$source_path/$1
3815     sed -n 's/^extern AVFilter ff_[avfsinkrc]\{2,5\}_\([[:alnum:]_]\{1,\}\);/\1_filter/p' $file
3816 }
3817
3818 FILTER_LIST=$(find_filters_extern libavfilter/allfilters.c)
3819 OUTDEV_LIST=$(find_things_extern muxer AVOutputFormat libavdevice/alldevices.c outdev)
3820 INDEV_LIST=$(find_things_extern demuxer AVInputFormat libavdevice/alldevices.c indev)
3821 MUXER_LIST=$(find_things_extern muxer AVOutputFormat libavformat/allformats.c)
3822 DEMUXER_LIST=$(find_things_extern demuxer AVInputFormat libavformat/allformats.c)
3823 ENCODER_LIST=$(find_things_extern encoder AVCodec libavcodec/allcodecs.c)
3824 DECODER_LIST=$(find_things_extern decoder AVCodec libavcodec/allcodecs.c)
3825 CODEC_LIST="
3826     $ENCODER_LIST
3827     $DECODER_LIST
3828 "
3829 PARSER_LIST=$(find_things_extern parser AVCodecParser libavcodec/parsers.c)
3830 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3831 HWACCEL_LIST=$(find_things_extern hwaccel AVHWAccel libavcodec/hwaccels.h)
3832 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3833
3834 AVCODEC_COMPONENTS_LIST="
3835     $BSF_LIST
3836     $DECODER_LIST
3837     $ENCODER_LIST
3838     $HWACCEL_LIST
3839     $PARSER_LIST
3840 "
3841
3842 AVDEVICE_COMPONENTS_LIST="
3843     $INDEV_LIST
3844     $OUTDEV_LIST
3845 "
3846
3847 AVFILTER_COMPONENTS_LIST="
3848     $FILTER_LIST
3849 "
3850
3851 AVFORMAT_COMPONENTS_LIST="
3852     $DEMUXER_LIST
3853     $MUXER_LIST
3854     $PROTOCOL_LIST
3855 "
3856
3857 ALL_COMPONENTS="
3858     $AVCODEC_COMPONENTS_LIST
3859     $AVDEVICE_COMPONENTS_LIST
3860     $AVFILTER_COMPONENTS_LIST
3861     $AVFORMAT_COMPONENTS_LIST
3862 "
3863
3864 for n in $COMPONENT_LIST; do
3865     v=$(toupper ${n%s})_LIST
3866     eval enable \$$v
3867     eval ${n}_if_any="\$$v"
3868 done
3869
3870 enable $ARCH_EXT_LIST
3871
3872 die_unknown(){
3873     echo "Unknown option \"$1\"."
3874     echo "See $0 --help for available options."
3875     exit 1
3876 }
3877
3878 print_in_columns() {
3879     tr ' ' '\n' | sort | tr '\r\n' '  ' | awk -v col_width=24 -v width="$ncols" '
3880     {
3881         num_cols = width > col_width ? int(width / col_width) : 1;
3882         num_rows = int((NF + num_cols-1) / num_cols);
3883         y = x = 1;
3884         for (y = 1; y <= num_rows; y++) {
3885             i = y;
3886             for (x = 1; x <= num_cols; x++) {
3887                 if (i <= NF) {
3888                   line = sprintf("%s%-" col_width "s", line, $i);
3889                 }
3890                 i = i + num_rows;
3891             }
3892             print line; line = "";
3893         }
3894     }' | sed 's/ *$//'
3895 }
3896
3897 show_list() {
3898     suffix=_$1
3899     shift
3900     echo $* | sed s/$suffix//g | print_in_columns
3901     exit 0
3902 }
3903
3904 rand_list(){
3905     IFS=', '
3906     set -- $*
3907     unset IFS
3908     for thing; do
3909         comp=${thing%:*}
3910         prob=${thing#$comp}
3911         prob=${prob#:}
3912         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3913         echo "prob ${prob:-0.5}"
3914         printf '%s\n' $comp
3915     done
3916 }
3917
3918 do_random(){
3919     action=$1
3920     shift
3921     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3922     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3923 }
3924
3925 for opt do
3926     optval="${opt#*=}"
3927     case "$opt" in
3928         --extra-ldflags=*)
3929             add_ldflags $optval
3930         ;;
3931         --extra-ldexeflags=*)
3932             add_ldexeflags $optval
3933         ;;
3934         --extra-ldsoflags=*)
3935             add_ldsoflags $optval
3936         ;;
3937         --extra-ldlibflags=*)
3938             warn "The --extra-ldlibflags option is only provided for compatibility and will be\n"\
3939                  "removed in the future. Use --extra-ldsoflags instead."
3940             add_ldsoflags $optval
3941         ;;
3942         --extra-libs=*)
3943             add_extralibs $optval
3944         ;;
3945         --disable-devices)
3946             disable $INDEV_LIST $OUTDEV_LIST
3947         ;;
3948         --enable-debug=*)
3949             debuglevel="$optval"
3950         ;;
3951         --disable-programs)
3952             disable $PROGRAM_LIST
3953         ;;
3954         --disable-everything)
3955             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3956         ;;
3957         --disable-all)
3958             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3959             disable $LIBRARY_LIST $PROGRAM_LIST doc
3960             enable avutil
3961         ;;
3962         --enable-random|--disable-random)
3963             action=${opt%%-random}
3964             do_random ${action#--} $COMPONENT_LIST
3965         ;;
3966         --enable-random=*|--disable-random=*)
3967             action=${opt%%-random=*}
3968             do_random ${action#--} $optval
3969         ;;
3970         --enable-sdl)
3971             enable sdl2
3972         ;;
3973         --enable-*=*|--disable-*=*)
3974             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3975             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3976             eval list=\$$(toupper $thing)_LIST
3977             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3978             list=$(filter "$name" $list)
3979             [ "$list" = "" ] && warn "Option $opt did not match anything"
3980             test $action = enable && warn_if_gets_disabled $list
3981             $action $list
3982         ;;
3983         --enable-yasm|--disable-yasm)
3984             warn "The ${opt} option is only provided for compatibility and will be\n"\
3985                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3986             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3987         ;;
3988         --yasmexe=*)
3989             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3990                  "removed in the future. Use --x86asmexe instead."
3991             x86asmexe="$optval"
3992         ;;
3993         --enable-?*|--disable-?*)
3994             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3995             if is_in $option $COMPONENT_LIST; then
3996                 test $action = disable && action=unset
3997                 eval $action \$$(toupper ${option%s})_LIST
3998             elif is_in $option $CMDLINE_SELECT; then
3999                 $action $option
4000             else
4001                 die_unknown $opt
4002             fi
4003         ;;
4004         --list-*)
4005             NAME="${opt#--list-}"
4006             is_in $NAME $COMPONENT_LIST || die_unknown $opt
4007             NAME=${NAME%s}
4008             eval show_list $NAME \$$(toupper $NAME)_LIST
4009         ;;
4010         --help|-h) show_help
4011         ;;
4012         --quiet|-q) quiet=yes
4013         ;;
4014         --fatal-warnings) enable fatal_warnings
4015         ;;
4016         --libfuzzer=*)
4017             libfuzzer_path="$optval"
4018         ;;
4019         *)
4020             optname="${opt%%=*}"
4021             optname="${optname#--}"
4022             optname=$(echo "$optname" | sed 's/-/_/g')
4023             if is_in $optname $CMDLINE_SET; then
4024                 eval $optname='$optval'
4025             elif is_in $optname $CMDLINE_APPEND; then
4026                 append $optname "$optval"
4027             else
4028                 die_unknown $opt
4029             fi
4030         ;;
4031     esac
4032 done
4033
4034 for e in $env; do
4035     eval "export $e"
4036 done
4037
4038 if disabled autodetect; then
4039
4040     # Unless iconv is explicitely disabled by the user, we still want to probe
4041     # for the iconv from the libc.
4042     disabled iconv || enable libc_iconv
4043
4044     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
4045     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
4046 fi
4047 # Mark specifically enabled, but normally autodetected libraries as requested.
4048 for lib in $AUTODETECT_LIBS; do
4049     enabled $lib && request $lib
4050 done
4051 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
4052 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
4053 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
4054
4055 disabled logging && logfile=/dev/null
4056
4057 # command line configuration sanity checks
4058
4059 # we need to build at least one lib type
4060 if ! enabled_any static shared; then
4061     cat <<EOF
4062 At least one library type must be built.
4063 Specify --enable-static to build the static libraries or --enable-shared to
4064 build the shared libraries as well. To only build the shared libraries specify
4065 --disable-static in addition to --enable-shared.
4066 EOF
4067     exit 1
4068 fi
4069
4070 die_license_disabled() {
4071     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
4072 }
4073
4074 die_license_disabled_gpl() {
4075     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
4076 }
4077
4078 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
4079 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
4080
4081 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
4082 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
4083
4084 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4085
4086 if enabled nonfree; then
4087     license="nonfree and unredistributable"
4088 elif enabled gplv3; then
4089     license="GPL version 3 or later"
4090 elif enabled lgplv3; then
4091     license="LGPL version 3 or later"
4092 elif enabled gpl; then
4093     license="GPL version 2 or later"
4094 else
4095     license="LGPL version 2.1 or later"
4096 fi
4097
4098 enabled_all gnutls openssl &&
4099     die "GnuTLS and OpenSSL must not be enabled at the same time."
4100
4101 enabled_all gnutls mbedtls &&
4102     die "GnuTLS and mbedTLS must not be enabled at the same time."
4103
4104 enabled_all openssl mbedtls &&
4105     die "OpenSSL and mbedTLS must not be enabled at the same time."
4106
4107 # Disable all the library-specific components if the library itself
4108 # is disabled, see AVCODEC_LIST and following _LIST variables.
4109
4110 disable_components(){
4111     disabled ${1} && disable $(
4112         eval components="\$$(toupper ${1})_COMPONENTS"
4113         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
4114     )
4115 }
4116
4117 map 'disable_components $v' $LIBRARY_LIST
4118
4119 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
4120 set >> $logfile
4121
4122 test -n "$valgrind" && toolchain="valgrind-memcheck"
4123
4124 enabled ossfuzz && ! echo $CFLAGS | grep -q -- "-fsanitize="  && ! echo $CFLAGS | grep -q -- "-fcoverage-mapping" &&{
4125     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
4126     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
4127 }
4128
4129 case "$toolchain" in
4130     *-asan)
4131         cc_default="${toolchain%-asan}"
4132         add_cflags  -fsanitize=address
4133         add_ldflags -fsanitize=address
4134     ;;
4135     *-msan)
4136         cc_default="${toolchain%-msan}"
4137         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
4138         add_ldflags -fsanitize=memory
4139     ;;
4140     *-tsan)
4141         cc_default="${toolchain%-tsan}"
4142         add_cflags  -fsanitize=thread
4143         add_ldflags -fsanitize=thread
4144         case "$toolchain" in
4145             gcc-tsan)
4146                 add_cflags  -fPIC
4147                 add_ldflags -fPIC
4148                 ;;
4149         esac
4150     ;;
4151     *-usan)
4152         cc_default="${toolchain%-usan}"
4153         add_cflags  -fsanitize=undefined
4154         add_ldflags -fsanitize=undefined
4155     ;;
4156     valgrind-*)
4157         target_exec_default="valgrind"
4158         case "$toolchain" in
4159             valgrind-massif)
4160                 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"
4161                 ;;
4162             valgrind-memcheck)
4163                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
4164                 ;;
4165         esac
4166     ;;
4167     msvc)
4168         # Check whether the current MSVC version needs the C99 converter.
4169         # From MSVC 2013 (compiler major version 18) onwards, it does actually
4170         # support enough of C99 to build ffmpeg. Default to the new
4171         # behaviour if the regexp was unable to match anything, since this
4172         # successfully parses the version number of existing supported
4173         # versions that require the converter (MSVC 2010 and 2012).
4174         cl_major_ver=$(cl.exe 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
4175         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
4176             cc_default="cl.exe"
4177             cxx_default="cl.exe"
4178         else
4179             die "Unsupported MSVC version (2013 or newer required)"
4180         fi
4181         ld_default="$source_path/compat/windows/mslink"
4182         nm_default="dumpbin.exe -symbols"
4183         ar_default="lib.exe"
4184         case "$arch" in
4185         aarch64|arm64)
4186             as_default="armasm64.exe"
4187             ;;
4188         arm*)
4189             as_default="armasm.exe"
4190             ;;
4191         esac
4192         target_os_default="win32"
4193         # Use a relative path for TMPDIR. This makes sure all the
4194         # ffconf temp files are written with a relative path, avoiding
4195         # issues with msys/win32 path conversion for MSVC parameters
4196         # such as -Fo<file> or -out:<file>.
4197         TMPDIR=.
4198     ;;
4199     icl)
4200         cc_default="icl"
4201         ld_default="xilink"
4202         nm_default="dumpbin -symbols"
4203         ar_default="xilib"
4204         target_os_default="win32"
4205         TMPDIR=.
4206     ;;
4207     gcov)
4208         add_cflags  -fprofile-arcs -ftest-coverage
4209         add_ldflags -fprofile-arcs -ftest-coverage
4210     ;;
4211     llvm-cov)
4212         add_cflags -fprofile-arcs -ftest-coverage
4213         add_ldflags --coverage
4214     ;;
4215     hardened)
4216         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
4217         add_cflags   -fno-strict-overflow -fstack-protector-all
4218         add_ldflags  -Wl,-z,relro -Wl,-z,now
4219         add_cflags   -fPIE
4220         add_ldexeflags -fPIE -pie
4221     ;;
4222     ?*)
4223         die "Unknown toolchain $toolchain"
4224     ;;
4225 esac
4226
4227 if test -n "$cross_prefix"; then
4228     test -n "$arch" && test -n "$target_os" ||
4229         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
4230     enable cross_compile
4231 fi
4232
4233 set_default target_os
4234 if test "$target_os" = android; then
4235     cc_default="clang"
4236 fi
4237
4238 ar_default="${cross_prefix}${ar_default}"
4239 cc_default="${cross_prefix}${cc_default}"
4240 cxx_default="${cross_prefix}${cxx_default}"
4241 nm_default="${cross_prefix}${nm_default}"
4242 pkg_config_default="${cross_prefix}${pkg_config_default}"
4243 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
4244     ranlib_default="${cross_prefix}${ranlib_default} -D"
4245 else
4246     ranlib_default="${cross_prefix}${ranlib_default}"
4247 fi
4248 strip_default="${cross_prefix}${strip_default}"
4249 windres_default="${cross_prefix}${windres_default}"
4250
4251 sysinclude_default="${sysroot}/usr/include"
4252
4253 if enabled cuda_sdk; then
4254     warn "Option --enable-cuda-sdk is deprecated. Use --enable-cuda-nvcc instead."
4255     enable cuda_nvcc
4256 fi
4257
4258 if enabled cuda_nvcc; then
4259     nvcc_default="nvcc"
4260     nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
4261 else
4262     nvcc_default="clang"
4263     nvccflags_default="--cuda-gpu-arch=sm_30 -O2"
4264     NVCC_C=""
4265 fi
4266
4267 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
4268     target_exec x86asmexe nvcc
4269 enabled cross_compile || host_cc_default=$cc
4270 set_default host_cc
4271
4272 pkg_config_fail_message=""
4273 if ! $pkg_config --version >/dev/null 2>&1; then
4274     warn "$pkg_config not found, library detection may fail."
4275     pkg_config=false
4276 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
4277     pkg_config_fail_message="
4278 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
4279 fi
4280
4281 if test $doxygen != $doxygen_default && \
4282   ! $doxygen --version >/dev/null 2>&1; then
4283     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
4284 fi
4285
4286 exesuf() {
4287     case $1 in
4288         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
4289     esac
4290 }
4291
4292 EXESUF=$(exesuf $target_os)
4293 HOSTEXESUF=$(exesuf $host_os)
4294
4295 # set temporary file name
4296 : ${TMPDIR:=$TEMPDIR}
4297 : ${TMPDIR:=$TMP}
4298 : ${TMPDIR:=/tmp}
4299
4300 if [ -n "$tempprefix" ] ; then
4301     mktemp(){
4302         tmpname="$tempprefix.${HOSTNAME}.${UID}"
4303         echo "$tmpname"
4304         mkdir "$tmpname"
4305     }
4306 elif ! test_cmd mktemp -u XXXXXX; then
4307     # simple replacement for missing mktemp
4308     # NOT SAFE FOR GENERAL USE
4309     mktemp(){
4310         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
4311         echo "$tmpname"
4312         mkdir "$tmpname"
4313     }
4314 fi
4315
4316 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
4317     die "Unable to create temporary directory in $TMPDIR."
4318
4319 tmpfile(){
4320     tmp="${FFTMPDIR}/test"$2
4321     (set -C; exec > $tmp) 2> /dev/null ||
4322         die "Unable to create temporary file in $FFTMPDIR."
4323     eval $1=$tmp
4324 }
4325
4326 trap 'rm -rf -- "$FFTMPDIR"' EXIT
4327 trap 'exit 2' INT
4328
4329 tmpfile TMPASM .asm
4330 tmpfile TMPC   .c
4331 tmpfile TMPCPP .cpp
4332 tmpfile TMPE   $EXESUF
4333 tmpfile TMPH   .h
4334 tmpfile TMPM   .m
4335 tmpfile TMPCU  .cu
4336 tmpfile TMPO   .o
4337 tmpfile TMPS   .S
4338 tmpfile TMPSH  .sh
4339 tmpfile TMPV   .ver
4340
4341 unset -f mktemp
4342
4343 chmod +x $TMPE
4344
4345 # make sure we can execute files in $TMPDIR
4346 cat > $TMPSH 2>> $logfile <<EOF
4347 #! /bin/sh
4348 EOF
4349 chmod +x $TMPSH >> $logfile 2>&1
4350 if ! $TMPSH >> $logfile 2>&1; then
4351     cat <<EOF
4352 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
4353 variable to another directory and make sure that it is not mounted noexec.
4354 EOF
4355     die "Sanity test failed."
4356 fi
4357
4358 armasm_flags(){
4359     for flag; do
4360         case $flag in
4361             # Filter out MSVC cl.exe options from cflags that shouldn't
4362             # be passed to gas-preprocessor
4363             -M[TD]*)                                            ;;
4364             *)                  echo $flag                      ;;
4365         esac
4366    done
4367 }
4368
4369 cparser_flags(){
4370     for flag; do
4371         case $flag in
4372             -Wno-switch)             echo -Wno-switch-enum ;;
4373             -Wno-format-zero-length) ;;
4374             -Wdisabled-optimization) ;;
4375             -Wno-pointer-sign)       echo -Wno-other ;;
4376             *)                       echo $flag ;;
4377         esac
4378     done
4379 }
4380
4381 msvc_common_flags(){
4382     for flag; do
4383         case $flag in
4384             # In addition to specifying certain flags under the compiler
4385             # specific filters, they must be specified here as well or else the
4386             # generic catch all at the bottom will print the original flag.
4387             -Wall)                ;;
4388             -Wextra)              ;;
4389             -std=c99)             ;;
4390             # Common flags
4391             -fomit-frame-pointer) ;;
4392             -g)                   echo -Z7 ;;
4393             -fno-math-errno)      ;;
4394             -fno-common)          ;;
4395             -fno-signed-zeros)    ;;
4396             -fPIC)                ;;
4397             -mthumb)              ;;
4398             -march=*)             ;;
4399             -lz)                  echo zlib.lib ;;
4400             -lx264)               echo libx264.lib ;;
4401             -lstdc++)             ;;
4402             -l*)                  echo ${flag#-l}.lib ;;
4403             -LARGEADDRESSAWARE)   echo $flag ;;
4404             -L*)                  echo -libpath:${flag#-L} ;;
4405             *)                    echo $flag ;;
4406         esac
4407     done
4408 }
4409
4410 msvc_flags(){
4411     msvc_common_flags "$@"
4412     for flag; do
4413         case $flag in
4414             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4415                                        -wd4554 ;;
4416             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4417                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4418                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4419                                        -wd4307 \
4420                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4421         esac
4422     done
4423 }
4424
4425 icl_flags(){
4426     msvc_common_flags "$@"
4427     for flag; do
4428         case $flag in
4429             # Despite what Intel's documentation says -Wall, which is supported
4430             # on Windows, does enable remarks so disable them here.
4431             -Wall)                echo $flag -Qdiag-disable:remark ;;
4432             -std=c99)             echo -Qstd=c99 ;;
4433             -flto)                echo -ipo ;;
4434         esac
4435     done
4436 }
4437
4438 icc_flags(){
4439     for flag; do
4440         case $flag in
4441             -flto)                echo -ipo ;;
4442             *)                    echo $flag ;;
4443         esac
4444     done
4445 }
4446
4447 suncc_flags(){
4448     for flag; do
4449         case $flag in
4450             -march=*|-mcpu=*)
4451                 case "${flag#*=}" in
4452                     native)                   echo -xtarget=native       ;;
4453                     v9|niagara)               echo -xarch=sparc          ;;
4454                     ultrasparc)               echo -xarch=sparcvis       ;;
4455                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4456                     i586|pentium)             echo -xchip=pentium        ;;
4457                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4458                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4459                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4460                     pentium4*)          echo -xtarget=pentium4           ;;
4461                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4462                     *-sse3)             echo -xarch=sse3                 ;;
4463                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4464                     bonnell)                   echo -xarch=ssse3         ;;
4465                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4466                     westmere)                  echo -xtarget=westmere    ;;
4467                     silvermont)                echo -xarch=sse4_2        ;;
4468                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4469                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4470                                                echo -xarch=avx           ;;
4471                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4472                     btver1)                    echo -xarch=amdsse4a      ;;
4473                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4474                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4475                     k8|opteron|athlon64|athlon-fx)
4476                                                echo -xarch=sse2a         ;;
4477                     athlon*)                   echo -xarch=pentium_proa  ;;
4478                 esac
4479                 ;;
4480             -std=c99)             echo -xc99              ;;
4481             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4482             -fPIC)                echo -KPIC -xcode=pic32 ;;
4483             -W*,*)                echo $flag              ;;
4484             -f*-*|-W*|-mimpure-text)                      ;;
4485             -shared)              echo -G                 ;;
4486             *)                    echo $flag              ;;
4487         esac
4488     done
4489 }
4490
4491 probe_cc(){
4492     pfx=$1
4493     _cc=$2
4494     first=$3
4495
4496     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4497     unset _ld_o _ldflags _ld_lib _ld_path
4498     unset _depflags _DEPCMD _DEPFLAGS
4499     _flags_filter=echo
4500
4501     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4502         true # no-op to avoid reading stdin in following checks
4503     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4504         _type=llvm_gcc
4505         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4506         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4507         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4508         _cflags_speed='-O3'
4509         _cflags_size='-Os'
4510     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4511         _type=gcc
4512         gcc_version=$($_cc --version | head -n1)
4513         gcc_basever=$($_cc -dumpversion)
4514         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4515         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4516         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4517         case $gcc_basever in
4518             2) ;;
4519             2.*) ;;
4520             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4521         esac
4522         if [ "$first" = true ]; then
4523             case $gcc_basever in
4524                 4.2*)
4525                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4526             esac
4527         fi
4528         _cflags_speed='-O3'
4529         _cflags_size='-Os'
4530     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4531         _type=icc
4532         _ident=$($_cc --version | head -n1)
4533         _depflags='-MMD'
4534         _cflags_speed='-O3'
4535         _cflags_size='-Os'
4536         _cflags_noopt='-O1'
4537         _flags_filter=icc_flags
4538     elif $_cc -v 2>&1 | grep -q xlc; then
4539         _type=xlc
4540         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4541         _cflags_speed='-O5'
4542         _cflags_size='-O5 -qcompact'
4543     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4544         test -d "$sysroot" || die "No valid sysroot specified."
4545         _type=armcc
4546         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4547         armcc_conf="$PWD/armcc.conf"
4548         $_cc --arm_linux_configure                 \
4549              --arm_linux_config_file="$armcc_conf" \
4550              --configure_sysroot="$sysroot"        \
4551              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4552              die "Error creating armcc configuration file."
4553         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4554         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4555         as_default="${cross_prefix}gcc"
4556         _depflags='-MMD'
4557         _cflags_speed='-O3'
4558         _cflags_size='-Os'
4559     elif $_cc -v 2>&1 | grep -q clang && ! $_cc -? > /dev/null 2>&1; then
4560         _type=clang
4561         _ident=$($_cc --version 2>/dev/null | head -n1)
4562         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4563         _cflags_speed='-O3'
4564         _cflags_size='-Oz'
4565     elif $_cc -V 2>&1 | grep -q Sun; then
4566         _type=suncc
4567         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4568         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4569         _DEPFLAGS='-xM1 -xc99'
4570         _ldflags='-std=c99'
4571         _cflags_speed='-O5'
4572         _cflags_size='-O5 -xspace'
4573         _flags_filter=suncc_flags
4574     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4575         _type=pathscale
4576         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4577         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4578         _cflags_speed='-O2'
4579         _cflags_size='-Os'
4580         _flags_filter='filter_out -Wdisabled-optimization'
4581     elif $_cc -v 2>&1 | grep -q Open64; then
4582         _type=open64
4583         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4584         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4585         _cflags_speed='-O2'
4586         _cflags_size='-Os'
4587         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4588     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4589         _type=armasm
4590         _ident=$($_cc | head -n1)
4591         # 4509: "This form of conditional instruction is deprecated"
4592         _flags="-nologo -ignore 4509"
4593         _flags_filter=armasm_flags
4594     elif $_cc 2>&1 | grep -q Intel; then
4595         _type=icl
4596         _ident=$($_cc 2>&1 | head -n1)
4597         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4598         # Not only is O3 broken on 13.x+ but it is slower on all previous
4599         # versions (tested) as well.
4600         _cflags_speed="-O2"
4601         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4602         if $_cc 2>&1 | grep -q Linker; then
4603             _ld_o='-out:$@'
4604         else
4605             _ld_o='-Fe$@'
4606         fi
4607         _cc_o='-Fo$@'
4608         _cc_e='-P'
4609         _flags_filter=icl_flags
4610         _ld_lib='lib%.a'
4611         _ld_path='-libpath:'
4612         # -Qdiag-error to make icl error when seeing certain unknown arguments
4613         _flags='-nologo -Qdiag-error:4044,10157'
4614         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4615         # with MSVC which enables it by default.
4616         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4617         disable stripping
4618     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4619         # lld can emulate multiple different linkers; in ms link.exe mode,
4620         # the -? parameter gives the help output which contains an identifyable
4621         # string, while it gives an error in other modes.
4622         _type=lld-link
4623         # The link.exe mode doesn't have a switch for getting the version,
4624         # but we can force it back to gnu mode and get the version from there.
4625         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4626         _ld_o='-out:$@'
4627         _flags_filter=msvc_flags
4628         _ld_lib='lib%.a'
4629         _ld_path='-libpath:'
4630     elif $_cc -nologo- 2>&1 | grep -q Microsoft || { $_cc -v 2>&1 | grep -q clang && $_cc -? > /dev/null 2>&1; }; then
4631         _type=msvc
4632         _ident=$($_cc 2>&1 | head -n1 | tr -d '\r')
4633         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4634         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4635         _cflags_speed="-O2"
4636         _cflags_size="-O1"
4637         _cflags_noopt="-O1"
4638         if $_cc -nologo- 2>&1 | grep -q Linker; then
4639             _ld_o='-out:$@'
4640         else
4641             _ld_o='-Fe$@'
4642         fi
4643         _cc_o='-Fo$@'
4644         _cc_e='-P -Fi$@'
4645         _flags_filter=msvc_flags
4646         _ld_lib='lib%.a'
4647         _ld_path='-libpath:'
4648         _flags='-nologo'
4649         disable stripping
4650     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4651         _type=cparser
4652         _ident=$($_cc --version | head -n1)
4653         _depflags='-MMD'
4654         _cflags_speed='-O4'
4655         _cflags_size='-O2'
4656         _flags_filter=cparser_flags
4657     fi
4658
4659     eval ${pfx}_type=\$_type
4660     eval ${pfx}_ident=\$_ident
4661 }
4662
4663 set_ccvars(){
4664     eval ${1}_C=\${_cc_c-\${${1}_C}}
4665     eval ${1}_E=\${_cc_e-\${${1}_E}}
4666     eval ${1}_O=\${_cc_o-\${${1}_O}}
4667
4668     if [ -n "$_depflags" ]; then
4669         eval ${1}_DEPFLAGS=\$_depflags
4670     else
4671         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4672         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4673         eval DEP${1}FLAGS=\$_flags
4674     fi
4675 }
4676
4677 probe_cc cc "$cc" "true"
4678 cflags_filter=$_flags_filter
4679 cflags_speed=$_cflags_speed
4680 cflags_size=$_cflags_size
4681 cflags_noopt=$_cflags_noopt
4682 add_cflags $_flags $_cflags
4683 cc_ldflags=$_ldflags
4684 set_ccvars CC
4685 set_ccvars CXX
4686
4687 probe_cc hostcc "$host_cc"
4688 host_cflags_filter=$_flags_filter
4689 host_cflags_speed=$_cflags_speed
4690 add_host_cflags  $_flags $_cflags
4691 set_ccvars HOSTCC
4692
4693 test -n "$cc_type" && enable $cc_type ||
4694     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4695
4696 : ${as_default:=$cc}
4697 : ${objcc_default:=$cc}
4698 : ${dep_cc_default:=$cc}
4699 : ${ld_default:=$cc}
4700 : ${host_ld_default:=$host_cc}
4701 set_default ar as objcc dep_cc ld ln_s host_ld windres
4702
4703 probe_cc as "$as"
4704 asflags_filter=$_flags_filter
4705 add_asflags $_flags $_cflags
4706 set_ccvars AS
4707
4708 probe_cc objcc "$objcc"
4709 objcflags_filter=$_flags_filter
4710 add_objcflags $_flags $_cflags
4711 set_ccvars OBJC
4712
4713 probe_cc ld "$ld"
4714 ldflags_filter=$_flags_filter
4715 add_ldflags $_flags $_ldflags
4716 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4717 LD_O=${_ld_o-$LD_O}
4718 LD_LIB=${_ld_lib-$LD_LIB}
4719 LD_PATH=${_ld_path-$LD_PATH}
4720
4721 probe_cc hostld "$host_ld"
4722 host_ldflags_filter=$_flags_filter
4723 add_host_ldflags $_flags $_ldflags
4724 HOSTLD_O=${_ld_o-$HOSTLD_O}
4725
4726 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4727     probe_cc depcc "$dep_cc"
4728     CCDEP=${_DEPCMD:-$DEPCMD}
4729     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4730     DEPCCFLAGS=$_flags
4731 fi
4732
4733 if $ar 2>&1 | grep -q Microsoft; then
4734     arflags="-nologo"
4735     ar_o='-out:$@'
4736 elif $ar 2>&1 | grep -q "\[D\] "; then
4737     arflags="rcD"
4738     ar_o='$@'
4739 else
4740     arflags="rc"
4741     ar_o='$@'
4742 fi
4743
4744 add_cflags $extra_cflags
4745 add_cxxflags $extra_cxxflags
4746 add_objcflags $extra_objcflags
4747 add_asflags $extra_cflags
4748
4749 if test -n "$sysroot"; then
4750     case "$cc_type" in
4751         gcc|llvm_gcc|clang)
4752             add_cppflags --sysroot="$sysroot"
4753             add_ldflags --sysroot="$sysroot"
4754         ;;
4755     esac
4756 fi
4757
4758 if test "$cpu" = host; then
4759     enabled cross_compile &&
4760         die "--cpu=host makes no sense when cross-compiling."
4761
4762     case "$cc_type" in
4763         gcc|llvm_gcc)
4764             check_native(){
4765                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4766                 sed -n "/cc1.*$1=/{
4767                             s/.*$1=\\([^ ]*\\).*/\\1/
4768                             p
4769                             q
4770                         }" $TMPE
4771             }
4772             cpu=$(check_native -march || check_native -mcpu)
4773         ;;
4774         clang)
4775             check_native(){
4776                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4777                 sed -n "/cc1.*-target-cpu /{
4778                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4779                             p
4780                             q
4781                         }" $TMPE
4782             }
4783             cpu=$(check_native -march)
4784         ;;
4785     esac
4786
4787     test "${cpu:-host}" = host &&
4788         die "--cpu=host not supported with compiler $cc"
4789 fi
4790
4791 # Deal with common $arch aliases
4792 case "$arch" in
4793     aarch64|arm64)
4794         arch="aarch64"
4795     ;;
4796     arm*|iPad*|iPhone*)
4797         arch="arm"
4798     ;;
4799     mips*|IP*)
4800         case "$arch" in
4801         *el)
4802             add_cppflags -EL
4803             add_ldflags -EL
4804         ;;
4805         *eb)
4806             add_cppflags -EB
4807             add_ldflags -EB
4808         ;;
4809         esac
4810         arch="mips"
4811     ;;
4812     parisc*|hppa*)
4813         arch="parisc"
4814     ;;
4815     "Power Macintosh"|ppc*|powerpc*)
4816         arch="ppc"
4817     ;;
4818     s390|s390x)
4819         arch="s390"
4820     ;;
4821     sh4|sh)
4822         arch="sh4"
4823     ;;
4824     sun4*|sparc*)
4825         arch="sparc"
4826     ;;
4827     tilegx|tile-gx)
4828         arch="tilegx"
4829     ;;
4830     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4831         arch="x86"
4832     ;;
4833 esac
4834
4835 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4836 enable $arch
4837
4838 # Add processor-specific flags
4839 if enabled aarch64; then
4840
4841     case $cpu in
4842         armv*)
4843             cpuflags="-march=$cpu"
4844         ;;
4845         *)
4846             cpuflags="-mcpu=$cpu"
4847         ;;
4848     esac
4849
4850 elif enabled alpha; then
4851
4852     cpuflags="-mcpu=$cpu"
4853
4854 elif enabled arm; then
4855
4856     check_arm_arch() {
4857         test_cpp_condition stddef.h \
4858             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4859             $cpuflags
4860     }
4861
4862     probe_arm_arch() {
4863         if   check_arm_arch 4;        then echo armv4
4864         elif check_arm_arch 4T;       then echo armv4t
4865         elif check_arm_arch 5;        then echo armv5
4866         elif check_arm_arch 5E;       then echo armv5e
4867         elif check_arm_arch 5T;       then echo armv5t
4868         elif check_arm_arch 5TE;      then echo armv5te
4869         elif check_arm_arch 5TEJ;     then echo armv5te
4870         elif check_arm_arch 6;        then echo armv6
4871         elif check_arm_arch 6J;       then echo armv6j
4872         elif check_arm_arch 6K;       then echo armv6k
4873         elif check_arm_arch 6Z;       then echo armv6z
4874         elif check_arm_arch 6KZ;      then echo armv6zk
4875         elif check_arm_arch 6ZK;      then echo armv6zk
4876         elif check_arm_arch 6T2;      then echo armv6t2
4877         elif check_arm_arch 7;        then echo armv7
4878         elif check_arm_arch 7A  7_A;  then echo armv7-a
4879         elif check_arm_arch 7S;       then echo armv7-a
4880         elif check_arm_arch 7R  7_R;  then echo armv7-r
4881         elif check_arm_arch 7M  7_M;  then echo armv7-m
4882         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4883         elif check_arm_arch 8A  8_A;  then echo armv8-a
4884         fi
4885     }
4886
4887     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4888
4889     case $cpu in
4890         armv*)
4891             cpuflags="-march=$cpu"
4892             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4893         ;;
4894         *)
4895             cpuflags="-mcpu=$cpu"
4896             case $cpu in
4897                 cortex-a*)                               subarch=armv7a  ;;
4898                 cortex-r*)                               subarch=armv7r  ;;
4899                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4900                 arm11*)                                  subarch=armv6   ;;
4901                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4902                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4903                 *)                             subarch=$(probe_arm_arch) ;;
4904             esac
4905         ;;
4906     esac
4907
4908     case "$subarch" in
4909         armv5t*)    enable fast_clz                ;;
4910         armv[6-8]*)
4911             enable fast_clz
4912             disabled fast_unaligned || enable fast_unaligned
4913             ;;
4914     esac
4915
4916 elif enabled avr32; then
4917
4918     case $cpu in
4919         ap7[02]0[0-2])
4920             subarch="avr32_ap"
4921             cpuflags="-mpart=$cpu"
4922         ;;
4923         ap)
4924             subarch="avr32_ap"
4925             cpuflags="-march=$cpu"
4926         ;;
4927         uc3[ab]*)
4928             subarch="avr32_uc"
4929             cpuflags="-mcpu=$cpu"
4930         ;;
4931         uc)
4932             subarch="avr32_uc"
4933             cpuflags="-march=$cpu"
4934         ;;
4935     esac
4936
4937 elif enabled bfin; then
4938
4939     cpuflags="-mcpu=$cpu"
4940
4941 elif enabled mips; then
4942
4943     cpuflags="-march=$cpu"
4944
4945     if [ "$cpu" != "generic" ]; then
4946         disable mips32r2
4947         disable mips32r5
4948         disable mips64r2
4949         disable mips32r6
4950         disable mips64r6
4951         disable loongson2
4952         disable loongson3
4953
4954         case $cpu in
4955             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4956                 enable mips32r2
4957                 disable msa
4958             ;;
4959             p5600|i6400|p6600)
4960                 disable mipsdsp
4961                 disable mipsdspr2
4962             ;;
4963             loongson*)
4964                 enable loongson2
4965                 enable loongson3
4966                 enable local_aligned
4967                 enable simd_align_16
4968                 enable fast_64bit
4969                 enable fast_clz
4970                 enable fast_cmov
4971                 enable fast_unaligned
4972                 disable aligned_stack
4973                 disable mipsdsp
4974                 disable mipsdspr2
4975                 # When gcc version less than 5.3.0, add -fno-expensive-optimizations flag.
4976                 if [ $cc == gcc ]; then
4977                     gcc_version=$(gcc -dumpversion)
4978                     if [ "$(echo "$gcc_version 5.3.0" | tr " " "\n" | sort -rV | head -n 1)" == "$gcc_version" ]; then
4979                         expensive_optimization_flag=""
4980                     else
4981                         expensive_optimization_flag="-fno-expensive-optimizations"
4982                     fi
4983                 fi
4984                 case $cpu in
4985                     loongson3*)
4986                         cpuflags="-march=loongson3a -mhard-float $expensive_optimization_flag"
4987                     ;;
4988                     loongson2e)
4989                         cpuflags="-march=loongson2e -mhard-float $expensive_optimization_flag"
4990                     ;;
4991                     loongson2f)
4992                         cpuflags="-march=loongson2f -mhard-float $expensive_optimization_flag"
4993                     ;;
4994                 esac
4995             ;;
4996             *)
4997                 # Unknown CPU. Disable everything.
4998                 warn "unknown CPU. Disabling all MIPS optimizations."
4999                 disable mipsfpu
5000                 disable mipsdsp
5001                 disable mipsdspr2
5002                 disable msa
5003                 disable mmi
5004             ;;
5005         esac
5006
5007         case $cpu in
5008             24kc)
5009                 disable mipsfpu
5010                 disable mipsdsp
5011                 disable mipsdspr2
5012             ;;
5013             24kf*)
5014                 disable mipsdsp
5015                 disable mipsdspr2
5016             ;;
5017             24kec|34kc|1004kc)
5018                 disable mipsfpu
5019                 disable mipsdspr2
5020             ;;
5021             24kef*|34kf*|1004kf*)
5022                 disable mipsdspr2
5023             ;;
5024             74kc)
5025                 disable mipsfpu
5026             ;;
5027             p5600)
5028                 enable mips32r5
5029                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
5030             ;;
5031             i6400)
5032                 enable mips64r6
5033                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
5034             ;;
5035             p6600)
5036                 enable mips64r6
5037                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
5038             ;;
5039         esac
5040     else
5041         # We do not disable anything. Is up to the user to disable the unwanted features.
5042         warn 'generic cpu selected'
5043     fi
5044
5045 elif enabled ppc; then
5046
5047     disable ldbrx
5048
5049     case $(tolower $cpu) in
5050         601|ppc601|powerpc601)
5051             cpuflags="-mcpu=601"
5052             disable altivec
5053         ;;
5054         603*|ppc603*|powerpc603*)
5055             cpuflags="-mcpu=603"
5056             disable altivec
5057         ;;
5058         604*|ppc604*|powerpc604*)
5059             cpuflags="-mcpu=604"
5060             disable altivec
5061         ;;
5062         g3|75*|ppc75*|powerpc75*)
5063             cpuflags="-mcpu=750"
5064             disable altivec
5065         ;;
5066         g4|745*|ppc745*|powerpc745*)
5067             cpuflags="-mcpu=7450"
5068             disable vsx
5069         ;;
5070         74*|ppc74*|powerpc74*)
5071             cpuflags="-mcpu=7400"
5072             disable vsx
5073         ;;
5074         g5|970|ppc970|powerpc970)
5075             cpuflags="-mcpu=970"
5076             disable vsx
5077         ;;
5078         power[3-6]*)
5079             cpuflags="-mcpu=$cpu"
5080             disable vsx
5081         ;;
5082         power[7-8]*)
5083             cpuflags="-mcpu=$cpu"
5084         ;;
5085         cell)
5086             cpuflags="-mcpu=cell"
5087             enable ldbrx
5088             disable vsx
5089         ;;
5090         e500mc)
5091             cpuflags="-mcpu=e500mc"
5092             disable altivec
5093         ;;
5094         e500v2)
5095             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
5096             disable altivec
5097             disable dcbzl
5098         ;;
5099         e500)
5100             cpuflags="-mcpu=8540 -mhard-float"
5101             disable altivec
5102             disable dcbzl
5103         ;;
5104     esac
5105
5106 elif enabled sparc; then
5107
5108     case $cpu in
5109         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
5110             cpuflags="-mcpu=$cpu"
5111         ;;
5112         ultrasparc*|niagara[234])
5113             cpuflags="-mcpu=$cpu"
5114         ;;
5115     esac
5116
5117 elif enabled x86; then
5118
5119     case $cpu in
5120         i[345]86|pentium)
5121             cpuflags="-march=$cpu"
5122             disable i686
5123             disable mmx
5124         ;;
5125         # targets that do NOT support nopl and conditional mov (cmov)
5126         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
5127             cpuflags="-march=$cpu"
5128             disable i686
5129         ;;
5130         # targets that do support nopl and conditional mov (cmov)
5131         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
5132         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
5133         |amdfam10|barcelona|b[dt]ver*|znver*)
5134             cpuflags="-march=$cpu"
5135             enable i686
5136             enable fast_cmov
5137         ;;
5138         # targets that do support conditional mov but on which it's slow
5139         pentium4|pentium4m|prescott|nocona)
5140             cpuflags="-march=$cpu"
5141             enable i686
5142             disable fast_cmov
5143         ;;
5144     esac
5145
5146 fi
5147
5148 if [ "$cpu" != generic ]; then
5149     add_cflags  $cpuflags
5150     add_asflags $cpuflags
5151     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
5152 fi
5153
5154 # compiler sanity check
5155 test_exec <<EOF
5156 int main(void){ return 0; }
5157 EOF
5158 if test "$?" != 0; then
5159     echo "$cc is unable to create an executable file."
5160     if test -z "$cross_prefix" && ! enabled cross_compile ; then
5161         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
5162         echo "Only do this if you know what cross compiling means."
5163     fi
5164     die "C compiler test failed."
5165 fi
5166
5167 add_cppflags -D_ISOC99_SOURCE
5168 add_cxxflags -D__STDC_CONSTANT_MACROS
5169 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
5170
5171 # some compilers silently accept -std=c11, so we also need to check that the
5172 # version macro is defined properly
5173 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
5174     add_cflags -std=c11 ||
5175     check_cflags -std=c99
5176
5177 check_cppflags -D_FILE_OFFSET_BITS=64
5178 check_cppflags -D_LARGEFILE_SOURCE
5179
5180 add_host_cppflags -D_ISOC99_SOURCE
5181 check_host_cflags -std=c99
5182 check_host_cflags -Wall
5183 check_host_cflags $host_cflags_speed
5184
5185 check_64bit(){
5186     arch32=$1
5187     arch64=$2
5188     expr=${3:-'sizeof(void *) > 4'}
5189     test_code cc "" "int test[2*($expr) - 1]" &&
5190         subarch=$arch64 || subarch=$arch32
5191     enable $subarch
5192 }
5193
5194 case "$arch" in
5195     aarch64|alpha|ia64)
5196         enabled shared && enable_weak pic
5197     ;;
5198     mips)
5199         check_64bit mips mips64 '_MIPS_SIM > 1'
5200         enabled shared && enable_weak pic
5201     ;;
5202     parisc)
5203         check_64bit parisc parisc64
5204         enabled shared && enable_weak pic
5205     ;;
5206     ppc)
5207         check_64bit ppc ppc64
5208         enabled shared && enable_weak pic
5209     ;;
5210     s390)
5211         check_64bit s390 s390x
5212         enabled shared && enable_weak pic
5213     ;;
5214     sparc)
5215         check_64bit sparc sparc64
5216         enabled shared && enable_weak pic
5217     ;;
5218     x86)
5219         check_64bit x86_32 x86_64
5220         # Treat x32 as x64 for now. Note it also needs pic if shared
5221         test "$subarch" = "x86_32" && test_cpp_condition stddef.h 'defined(__x86_64__)' &&
5222             subarch=x86_64 && enable x86_64 && disable x86_32
5223         if enabled x86_64; then
5224             enabled shared && enable_weak pic
5225             objformat=elf64
5226         fi
5227     ;;
5228 esac
5229
5230 # OS specific
5231 case $target_os in
5232     aix)
5233         SHFLAGS=-shared
5234         add_cppflags '-I\$(SRC_PATH)/compat/aix'
5235         enabled shared && add_ldflags -Wl,-brtl
5236         arflags='-Xany -r -c'
5237         striptype=""
5238         ;;
5239     android)
5240         disable symver
5241         enable section_data_rel_ro
5242         add_cflags -fPIE
5243         add_ldexeflags -fPIE -pie
5244         SLIB_INSTALL_NAME='$(SLIBNAME)'
5245         SLIB_INSTALL_LINKS=
5246         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
5247         ;;
5248     haiku)
5249         prefix_default="/boot/common"
5250         network_extralibs="-lnetwork"
5251         host_extralibs=
5252         ;;
5253     sunos)
5254         SHFLAGS='-shared -Wl,-h,$$(@F)'
5255         enabled x86 && append SHFLAGS -mimpure-text
5256         network_extralibs="-lsocket -lnsl"
5257         add_cppflags -D__EXTENSIONS__
5258         # When using suncc to build, the Solaris linker will mark
5259         # an executable with each instruction set encountered by
5260         # the Solaris assembler.  As our libraries contain their own
5261         # guards for processor-specific code, instead suppress
5262         # generation of the HWCAPS ELF section on Solaris x86 only.
5263         enabled_all suncc x86 &&
5264             echo "hwcap_1 = OVERRIDE;" > mapfile &&
5265             add_ldflags -Wl,-M,mapfile
5266         nm_default='nm -P -g'
5267         striptype=""
5268         version_script='-M'
5269         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
5270         ;;
5271     netbsd)
5272         disable symver
5273         oss_indev_extralibs="-lossaudio"
5274         oss_outdev_extralibs="-lossaudio"
5275         enabled gcc || check_ldflags -Wl,-zmuldefs
5276         ;;
5277     openbsd|bitrig)
5278         disable symver
5279         striptype=""
5280         SHFLAGS='-shared'
5281         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
5282         SLIB_INSTALL_LINKS=
5283         oss_indev_extralibs="-lossaudio"
5284         oss_outdev_extralibs="-lossaudio"
5285         ;;
5286     dragonfly)
5287         disable symver
5288         ;;
5289     freebsd)
5290         ;;
5291     bsd/os)
5292         add_extralibs -lpoll -lgnugetopt
5293         strip="strip -d"
5294         ;;
5295     darwin)
5296         enabled ppc && add_asflags -force_cpusubtype_ALL
5297         install_name_dir_default='$(SHLIBDIR)'
5298         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
5299         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
5300         strip="${strip} -x"
5301         add_ldflags -Wl,-dynamic,-search_paths_first
5302         check_cflags -Werror=partial-availability
5303         SLIBSUF=".dylib"
5304         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
5305         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
5306         enabled x86_64 && objformat="macho64" || objformat="macho32"
5307         enabled_any pic shared x86_64 ||
5308             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
5309         check_headers dispatch/dispatch.h &&
5310             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
5311         if test -n "$sysroot"; then
5312             is_in -isysroot $cc $CPPFLAGS $CFLAGS || check_cppflags -isysroot $sysroot
5313             is_in -isysroot $ld $LDFLAGS          || check_ldflags  -isysroot $sysroot
5314         fi
5315         version_script='-exported_symbols_list'
5316         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
5317         ;;
5318     msys*)
5319         die "Native MSYS builds are discouraged, please use the MINGW environment."
5320         ;;
5321     mingw32*|mingw64*)
5322         target_os=mingw32
5323         LIBTARGET=i386
5324         if enabled x86_64; then
5325             LIBTARGET="i386:x86-64"
5326         elif enabled arm; then
5327             LIBTARGET="arm"
5328         elif enabled aarch64; then
5329             LIBTARGET="arm64"
5330         fi
5331         if enabled shared; then
5332             # Cannot build both shared and static libs when using dllimport.
5333             disable static
5334         fi
5335         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5336         enabled x86_32 && check_ldflags -Wl,--large-address-aware
5337         shlibdir_default="$bindir_default"
5338         SLIBPREF=""
5339         SLIBSUF=".dll"
5340         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5341         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5342         if test_cmd lib.exe -list; then
5343             SLIB_EXTRA_CMD=-'lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5344             if enabled x86_64; then
5345                 LIBTARGET=x64
5346             fi
5347         else
5348             SLIB_EXTRA_CMD=-'$(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
5349         fi
5350         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5351         SLIB_INSTALL_LINKS=
5352         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5353         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5354         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" AR="$(AR_CMD)" NM="$(NM_CMD)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5355         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--disable-auto-image-base $$(@:$(SLIBSUF)=.def)'
5356         enabled x86_64 && objformat="win64" || objformat="win32"
5357         dlltool="${cross_prefix}dlltool"
5358         ranlib=:
5359         enable dos_paths
5360         check_ldflags -Wl,--nxcompat,--dynamicbase
5361         # Lets work around some stupidity in binutils.
5362         # ld will strip relocations from executables even though we need them
5363         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
5364         # however ld then forgets what the entry point should be (oops) so we
5365         # have to manually (re)set it.
5366         if enabled x86_32; then
5367             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
5368         elif enabled x86_64; then
5369             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
5370             check_ldflags -Wl,--high-entropy-va # binutils 2.25
5371             # Set image base >4GB for extra entropy with HEASLR
5372             add_ldexeflags -Wl,--image-base,0x140000000
5373             append SHFLAGS -Wl,--image-base,0x180000000
5374         fi
5375         ;;
5376     win32|win64)
5377         disable symver
5378         if enabled shared; then
5379             # Link to the import library instead of the normal static library
5380             # for shared libs.
5381             LD_LIB='%.lib'
5382             # Cannot build both shared and static libs with MSVC or icl.
5383             disable static
5384         fi
5385         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
5386         shlibdir_default="$bindir_default"
5387         SLIBPREF=""
5388         SLIBSUF=".dll"
5389         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5390         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5391         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5392         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5393         SLIB_INSTALL_LINKS=
5394         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5395         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5396         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5397         enabled x86_64 && objformat="win64" || objformat="win32"
5398         ranlib=:
5399         enable dos_paths
5400         ;;
5401     cygwin*)
5402         target_os=cygwin
5403         shlibdir_default="$bindir_default"
5404         SLIBPREF="cyg"
5405         SLIBSUF=".dll"
5406         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5407         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5408         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5409         SLIB_INSTALL_LINKS=
5410         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
5411         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
5412         enabled x86_64 && objformat="win64" || objformat="win32"
5413         enable dos_paths
5414         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5415         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5416         ;;
5417     *-dos|freedos|opendos)
5418         network_extralibs="-lsocket"
5419         objformat="coff"
5420         enable dos_paths
5421         ;;
5422     linux)
5423         enable section_data_rel_ro
5424         enabled_any arm aarch64 && enable_weak linux_perf
5425         ;;
5426     irix*)
5427         target_os=irix
5428         ranlib="echo ignoring ranlib"
5429         ;;
5430     os/2*)
5431         strip="lxlite -CS"
5432         striptype=""
5433         objformat="aout"
5434         add_cppflags -D_GNU_SOURCE
5435         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
5436         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
5437         LIBSUF="_s.a"
5438         SLIBPREF=""
5439         SLIBSUF=".dll"
5440         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5441         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
5442         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
5443             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
5444             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
5445             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
5446             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
5447         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
5448             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
5449         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5450         SLIB_INSTALL_LINKS=
5451         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
5452         enable dos_paths
5453         enable_weak os2threads
5454         ;;
5455     gnu/kfreebsd)
5456         add_cppflags -D_BSD_SOURCE
5457         ;;
5458     gnu)
5459         ;;
5460     qnx)
5461         add_cppflags -D_QNX_SOURCE
5462         network_extralibs="-lsocket"
5463         ;;
5464     symbian)
5465         SLIBSUF=".dll"
5466         enable dos_paths
5467         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
5468         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
5469         add_ldflags -Wl,--target1-abs,--no-undefined \
5470                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
5471                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
5472         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
5473                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
5474                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
5475         ;;
5476     minix)
5477         ;;
5478     none)
5479         ;;
5480     *)
5481         die "Unknown OS '$target_os'."
5482         ;;
5483 esac
5484
5485 # test if creating links works
5486 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5487 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5488 mkdir "$link_dest"
5489 $ln_s "$link_dest" "$link_name"
5490 touch "$link_dest/test_file"
5491 if [ "$source_path" != "." ] && [ "$source_path" != "src" ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5492     # create link to source path
5493     [ -e src ] && rm src
5494     $ln_s "$source_path" src
5495     source_link=src
5496 else
5497     # creating directory links doesn't work
5498     # fall back to using the full source path
5499     source_link="$source_path"
5500 fi
5501 # cleanup
5502 rm -r "$link_dest"
5503 rm -r "$link_name"
5504
5505 # determine libc flavour
5506
5507 probe_libc(){
5508     pfx=$1
5509     pfx_no_=${pfx%_}
5510     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5511     if test_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5512         eval ${pfx}libc_type=uclibc
5513         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5514     elif test_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5515         eval ${pfx}libc_type=glibc
5516         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5517     # MinGW headers can be installed on Cygwin, so check for newlib first.
5518     elif test_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5519         eval ${pfx}libc_type=newlib
5520         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
5521     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5522     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5523         eval ${pfx}libc_type=mingw64
5524         if test_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5525             add_compat msvcrt/snprintf.o
5526             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5527         fi
5528         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5529         eval test \$${pfx_no_}cc_type = "gcc" &&
5530             add_${pfx}cppflags -D__printf__=__gnu_printf__
5531         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5532             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5533         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5534     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5535          test_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5536         eval ${pfx}libc_type=mingw32
5537         test_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5538             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5539             die "ERROR: MinGW32 runtime version must be >= 3.15."
5540         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5541         test_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
5542             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5543         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5544             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5545         eval test \$${pfx_no_}cc_type = "gcc" &&
5546             add_${pfx}cppflags -D__printf__=__gnu_printf__
5547         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5548     elif test_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5549         eval ${pfx}libc_type=msvcrt
5550         if test_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5551             if [ "$pfx" = host_ ]; then
5552                 add_host_cppflags -Dsnprintf=_snprintf
5553             else
5554                 add_compat strtod.o strtod=avpriv_strtod
5555                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5556                                              _snprintf=avpriv_snprintf  \
5557                                              vsnprintf=avpriv_vsnprintf
5558             fi
5559         fi
5560         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5561         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5562         # 0x601 by default unless something else is set by the user.
5563         # This can easily lead to us detecting functions only present
5564         # in such new versions and producing binaries requiring windows 7.0.
5565         # Therefore explicitly set the default to Vista unless the user has
5566         # set something else on the command line.
5567         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5568         # family. For these cases, configure is free to use any functions
5569         # found in the SDK headers by default. (Alternatively, we could force
5570         # _WIN32_WINNT to 0x0602 in that case.)
5571         test_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5572             { test_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0600; }
5573 #ifdef WINAPI_FAMILY
5574 #include <winapifamily.h>
5575 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5576 #error not desktop
5577 #endif
5578 #endif
5579 EOF
5580         if [ "$pfx" = "" ]; then
5581             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5582             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5583         fi
5584     elif test_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5585         eval ${pfx}libc_type=klibc
5586     elif test_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5587         eval ${pfx}libc_type=bionic
5588     elif test_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5589         eval ${pfx}libc_type=solaris
5590         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5591     elif test_${pfx}cpp_condition sys/version.h "defined __DJGPP__"; then
5592         eval ${pfx}libc_type=djgpp
5593         add_cppflags -U__STRICT_ANSI__
5594         add_cflags "-include $source_path/compat/djgpp/math.h"
5595         add_compat djgpp/math.o
5596     fi
5597     test_${pfx}cc <<EOF
5598 #include <time.h>
5599 void *v = localtime_r;
5600 EOF
5601 test "$?" != 0 && test_${pfx}cc -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 <<EOF && add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5602 #include <time.h>
5603 void *v = localtime_r;
5604 EOF
5605
5606     eval test -n "\${${pfx}libc_type}" && enable ${pfx}libc_${libc_type}
5607 }
5608
5609 probe_libc
5610 probe_libc host_
5611
5612 # hacks for compiler/libc/os combinations
5613
5614 case $libc_type in
5615     bionic)
5616         add_compat strtod.o strtod=avpriv_strtod
5617         ;;
5618 esac
5619
5620 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5621     add_cppflags '-I\$(SRC_PATH)/compat/float'
5622
5623 test_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5624
5625 set_default libdir
5626 : ${shlibdir_default:="$libdir"}
5627 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5628
5629 set_default $PATHS_LIST
5630 set_default nm
5631
5632 disabled optimizations || enabled ossfuzz || check_cflags -fomit-frame-pointer
5633
5634 enable_weak_pic() {
5635     disabled pic && return
5636     enable pic
5637     add_cppflags -DPIC
5638     case "$target_os" in
5639     mingw*|cygwin*|win*)
5640         ;;
5641     *)
5642         add_cflags -fPIC
5643         add_asflags -fPIC
5644         ;;
5645     esac
5646 }
5647
5648 enabled pic && enable_weak_pic
5649
5650 test_cc <<EOF || die "Symbol mangling check failed."
5651 int ff_extern;
5652 EOF
5653 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5654 extern_prefix=${sym%%ff_extern*}
5655
5656 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
5657
5658 for restrict_keyword in restrict __restrict__ __restrict ""; do
5659     test_code cc "" "char * $restrict_keyword p" && break
5660 done
5661
5662 check_cc pragma_deprecated "" '_Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"")'
5663
5664 # The global variable ensures the bits appear unchanged in the object file.
5665 test_cc <<EOF || die "endian test failed"
5666 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5667 EOF
5668 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5669
5670 check_cc const_nan math.h "struct { double d; } static const bar[] = { { NAN } }"
5671
5672 if ! enabled ppc64 || enabled bigendian; then
5673     disable vsx
5674 fi
5675
5676 check_gas() {
5677     log "check_gas using '$as' as AS"
5678     # :vararg is used on aarch64, arm and ppc altivec
5679     check_as vararg "
5680 .macro m n, y:vararg=0
5681 \n: .int \y
5682 .endm
5683 m x" || return 1
5684     # .altmacro is only used in arm asm
5685     ! enabled arm || check_as gnu_as ".altmacro"
5686 }
5687
5688 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5689     nogas=:
5690     enabled_any arm aarch64 && nogas=die
5691     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5692     as_noop=-v
5693
5694     case $as_type in
5695         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5696         gcc)  gaspp_as_type=gas ;;
5697         *)    gaspp_as_type=$as_type ;;
5698     esac
5699
5700     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5701
5702     test "${as#*gas-preprocessor.pl}" != "$as" ||
5703     test_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5704         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5705
5706     if ! check_gas ; then
5707         as=${gas:=$as}
5708         check_gas || \
5709             $nogas "GNU assembler not found, install/update gas-preprocessor"
5710     fi
5711
5712     check_as as_func ".func test
5713                       .endfunc"
5714 fi
5715
5716 check_inline_asm inline_asm_labels '"1:\n"'
5717
5718 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5719
5720 if enabled aarch64; then
5721     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5722     # internal assembler in clang 3.3 does not support this instruction
5723     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5724     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5725
5726     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5727
5728 elif enabled alpha; then
5729
5730     check_cflags -mieee
5731
5732 elif enabled arm; then
5733
5734     enabled msvc && check_cpp_condition thumb stddef.h "defined _M_ARMT"
5735     test_cpp_condition stddef.h "defined __thumb__" && test_cc <<EOF && enable_weak thumb
5736 float func(float a, float b){ return a+b; }
5737 EOF
5738     enabled thumb && check_cflags -mthumb || check_cflags -marm
5739
5740     if check_cpp_condition vfp_args stddef.h "defined __ARM_PCS_VFP"; then
5741         :
5742     elif check_cpp_condition vfp_args stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5743         :
5744     elif ! test_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5745         case "${cross_prefix:-$cc}" in
5746             *hardfloat*) enable vfp_args; fpabi=vfp ;;
5747             *) check_ld "cc" vfp_args <<EOF && fpabi=vfp || fpabi=soft ;;
5748 __asm__ (".eabi_attribute 28, 1");
5749 int main(void) { return 0; }
5750 EOF
5751         esac
5752         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5753     fi
5754
5755     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5756     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5757     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5758     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5759     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5760     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5761     enabled setend  && check_insn setend  'setend be'
5762
5763     [ $target_os = linux ] || [ $target_os = android ] ||
5764         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5765             $ARCH_EXT_LIST_ARM
5766
5767     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5768
5769     check_as as_arch_directive ".arch armv7-a"
5770     check_as as_dn_directive   "ra .dn d0.i16"
5771     check_as as_fpu_directive  ".fpu neon"
5772
5773     # llvm's integrated assembler supports .object_arch from llvm 3.5
5774     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
5775         check_as as_object_arch ".object_arch armv4"
5776
5777     # MS armasm fails to assemble our PIC constructs
5778     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5779
5780 elif enabled mips; then
5781
5782     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5783     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5784     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5785
5786     # Enable minimum ISA based on selected options
5787     if enabled mips64; then
5788         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5789         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5790         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5791     else
5792         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5793         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5794         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5795         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5796     fi
5797
5798     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5799     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5800     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_headers msa.h || disable msa
5801     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5802     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5803     enabled msa && enabled msa2 && check_inline_asm_flags msa2 '"nxbits.any.b $w0, $w0"' '-mmsa2' && check_headers msa2.h || disable msa2
5804
5805     if enabled bigendian && enabled msa; then
5806         disable msa
5807     fi
5808
5809 elif enabled parisc; then
5810
5811     if enabled gcc; then
5812         case $($cc -dumpversion) in
5813             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5814         esac
5815     fi
5816
5817 elif enabled ppc; then
5818
5819     enable local_aligned
5820
5821     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5822     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5823     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5824     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5825
5826     if enabled altivec; then
5827         check_cflags -maltivec -mabi=altivec
5828
5829         # check if our compiler supports Motorola AltiVec C API
5830         check_cc altivec altivec.h "vector signed int v1 = (vector signed int) { 0 };
5831                                     vector signed int v2 = (vector signed int) { 1 };
5832                                     v1 = vec_add(v1, v2);"
5833
5834         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5835     fi
5836
5837     if enabled vsx; then
5838         check_cflags -mvsx &&
5839         check_cc vsx altivec.h "int v[4] = { 0 };
5840                                 vector signed int v1 = vec_vsx_ld(0, v);"
5841     fi
5842
5843     if enabled power8; then
5844         check_cpp_condition power8 "altivec.h" "defined(_ARCH_PWR8)"
5845     fi
5846
5847 elif enabled x86; then
5848
5849     check_builtin rdtsc    intrin.h   "__rdtsc()"
5850     check_builtin mm_empty mmintrin.h "_mm_empty()"
5851
5852     enable local_aligned
5853
5854     # check whether EBP is available on x86
5855     # As 'i' is stored on the stack, this program will crash
5856     # if the base pointer is used to access it because the
5857     # base pointer is cleared in the inline assembly code.
5858     check_exec_crash <<EOF && enable ebp_available
5859 volatile int i=0;
5860 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5861 return i;
5862 EOF
5863
5864     # check whether EBX is available on x86
5865     check_inline_asm ebx_available '""::"b"(0)' &&
5866         check_inline_asm ebx_available '"":::"%ebx"'
5867
5868     # check whether xmm clobbers are supported
5869     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5870
5871     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5872         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5873
5874     # check whether binutils is new enough to compile SSSE3/MMXEXT
5875     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5876     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5877
5878     probe_x86asm(){
5879         x86asmexe_probe=$1
5880         if test_cmd $x86asmexe_probe -v; then
5881             x86asmexe=$x86asmexe_probe
5882             x86asm_type=nasm
5883             x86asm_debug="-g -F dwarf"
5884             X86ASMDEP=
5885             X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
5886         elif test_cmd $x86asmexe_probe --version; then
5887             x86asmexe=$x86asmexe_probe
5888             x86asm_type=yasm
5889             x86asm_debug="-g dwarf2"
5890             X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
5891             X86ASM_DEPFLAGS=
5892         fi
5893         check_x86asm x86asm "movbe ecx, [5]"
5894     }
5895
5896     if ! disabled_any asm mmx x86asm; then
5897         disable x86asm
5898         for program in $x86asmexe nasm yasm; do
5899             probe_x86asm $program && break
5900         done
5901         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
5902         X86ASMFLAGS="-f $objformat"
5903         enabled pic               && append X86ASMFLAGS "-DPIC"
5904         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
5905         case "$objformat" in
5906             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
5907         esac
5908
5909         check_x86asm avx512_external "vmovdqa32 [eax]{k1}{z}, zmm0"
5910         check_x86asm avx2_external   "vextracti128 xmm0, ymm0, 0"
5911         check_x86asm xop_external    "vpmacsdd xmm0, xmm1, xmm2, xmm3"
5912         check_x86asm fma4_external   "vfmaddps ymm0, ymm1, ymm2, ymm3"
5913         check_x86asm cpunop          "CPU amdnop"
5914     fi
5915
5916     case "$cpu" in
5917         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5918             disable fast_clz
5919         ;;
5920     esac
5921
5922 fi
5923
5924 check_cc intrinsics_neon arm_neon.h "int16x8_t test = vdupq_n_s16(0)"
5925
5926 check_ldflags -Wl,--as-needed
5927 check_ldflags -Wl,-z,noexecstack
5928
5929 if ! disabled network; then
5930     check_func getaddrinfo $network_extralibs
5931     check_func inet_aton $network_extralibs
5932
5933     check_type netdb.h "struct addrinfo"
5934     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5935     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5936     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5937     check_type poll.h "struct pollfd"
5938     check_type netinet/sctp.h "struct sctp_event_subscribe"
5939     check_struct "sys/socket.h" "struct msghdr" msg_flags
5940     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5941     check_type netinet/in.h "struct sockaddr_in6"
5942     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5943     check_type "sys/types.h sys/socket.h" socklen_t
5944
5945     # Prefer arpa/inet.h over winsock2
5946     if check_headers arpa/inet.h ; then
5947         check_func closesocket
5948     elif check_headers winsock2.h ; then
5949         check_func_headers winsock2.h closesocket -lws2 &&
5950             network_extralibs="-lws2" ||
5951         { check_func_headers winsock2.h closesocket -lws2_32 &&
5952             network_extralibs="-lws2_32"; } || disable winsock2_h network
5953         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5954
5955         check_type ws2tcpip.h socklen_t
5956         check_type ws2tcpip.h "struct addrinfo"
5957         check_type ws2tcpip.h "struct group_source_req"
5958         check_type ws2tcpip.h "struct ip_mreq_source"
5959         check_type ws2tcpip.h "struct ipv6_mreq"
5960         check_type winsock2.h "struct pollfd"
5961         check_struct winsock2.h "struct sockaddr" sa_len
5962         check_type ws2tcpip.h "struct sockaddr_in6"
5963         check_type ws2tcpip.h "struct sockaddr_storage"
5964     else
5965         disable network
5966     fi
5967 fi
5968
5969 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5970 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5971 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5972 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5973 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5974 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5975 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5976
5977 case "$custom_allocator" in
5978     jemalloc)
5979         # jemalloc by default does not use a prefix
5980         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5981     ;;
5982     tcmalloc)
5983         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
5984         malloc_prefix=tc_
5985     ;;
5986 esac
5987
5988 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5989 check_func  ${malloc_prefix}memalign            && enable memalign
5990 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5991
5992 check_func  access
5993 check_func_headers stdlib.h arc4random
5994 check_lib   clock_gettime time.h clock_gettime || check_lib clock_gettime time.h clock_gettime -lrt
5995 check_func  fcntl
5996 check_func  fork
5997 check_func  gethrtime
5998 check_func  getopt
5999 check_func  getrusage
6000 check_func  gettimeofday
6001 check_func  isatty
6002 check_func  mkstemp
6003 check_func  mmap
6004 check_func  mprotect
6005 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
6006 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
6007 check_func  sched_getaffinity
6008 check_func  setrlimit
6009 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
6010 check_func  strerror_r
6011 check_func  sysconf
6012 check_func  sysctl
6013 check_func  usleep
6014
6015 check_func_headers conio.h kbhit
6016 check_func_headers io.h setmode
6017 check_func_headers lzo/lzo1x.h lzo1x_999_compress
6018 check_func_headers mach/mach_time.h mach_absolute_time
6019 check_func_headers stdlib.h getenv
6020 check_func_headers sys/stat.h lstat
6021
6022 check_func_headers windows.h GetProcessAffinityMask
6023 check_func_headers windows.h GetProcessTimes
6024 check_func_headers windows.h GetSystemTimeAsFileTime
6025 check_func_headers windows.h LoadLibrary
6026 check_func_headers windows.h MapViewOfFile
6027 check_func_headers windows.h PeekNamedPipe
6028 check_func_headers windows.h SetConsoleTextAttribute
6029 check_func_headers windows.h SetConsoleCtrlHandler
6030 check_func_headers windows.h Sleep
6031 check_func_headers windows.h VirtualAlloc
6032 check_func_headers glob.h glob
6033 enabled xlib &&
6034     check_lib xlib "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
6035
6036 check_headers direct.h
6037 check_headers dirent.h
6038 check_headers dxgidebug.h
6039 check_headers dxva.h
6040 check_headers dxva2api.h -D_WIN32_WINNT=0x0600
6041 check_headers io.h
6042 check_headers linux/perf_event.h
6043 check_headers libcrystalhd/libcrystalhd_if.h
6044 check_headers malloc.h
6045 check_headers net/udplite.h
6046 check_headers poll.h
6047 check_headers sys/param.h
6048 check_headers sys/resource.h
6049 check_headers sys/select.h
6050 check_headers sys/time.h
6051 check_headers sys/un.h
6052 check_headers termios.h
6053 check_headers unistd.h
6054 check_headers valgrind/valgrind.h
6055 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
6056 check_headers windows.h
6057 check_headers X11/extensions/XvMClib.h
6058 check_headers asm/types.h
6059
6060 # it seems there are versions of clang in some distros that try to use the
6061 # gcc headers, which explodes for stdatomic
6062 # so we also check that atomics actually work here
6063 check_builtin stdatomic stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0); foo += bar"
6064
6065 check_lib advapi32 "windows.h"            RegCloseKey          -ladvapi32
6066 check_lib bcrypt   "windows.h bcrypt.h"   BCryptGenRandom      -lbcrypt &&
6067     check_cpp_condition bcrypt bcrypt.h "defined BCRYPT_RNG_ALGORITHM"
6068 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
6069 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
6070 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
6071
6072 check_lib android android/native_window.h ANativeWindow_acquire -landroid
6073 check_lib mediandk "stdint.h media/NdkImage.h" AImage_delete -lmediandk
6074 check_lib camera2ndk "stdbool.h stdint.h camera/NdkCameraManager.h" ACameraManager_create -lcamera2ndk
6075
6076 enabled appkit       && check_apple_framework AppKit
6077 enabled audiotoolbox && check_apple_framework AudioToolbox
6078 enabled avfoundation && check_apple_framework AVFoundation
6079 enabled coreimage    && check_apple_framework CoreImage
6080 enabled videotoolbox && check_apple_framework VideoToolbox
6081
6082 check_apple_framework CoreFoundation
6083 check_apple_framework CoreMedia
6084 check_apple_framework CoreVideo
6085
6086 enabled avfoundation && {
6087     disable coregraphics applicationservices
6088     check_lib coregraphics        CoreGraphics/CoreGraphics.h               CGGetActiveDisplayList "-framework CoreGraphics" ||
6089     check_lib applicationservices ApplicationServices/ApplicationServices.h CGGetActiveDisplayList "-framework ApplicationServices"; }
6090
6091 enabled videotoolbox && {
6092     check_lib coreservices CoreServices/CoreServices.h UTGetOSTypeFromString "-framework CoreServices"
6093     check_func_headers CoreMedia/CMFormatDescription.h kCMVideoCodecType_HEVC "-framework CoreMedia"
6094     check_func_headers CoreVideo/CVPixelBuffer.h kCVPixelFormatType_420YpCbCr10BiPlanarVideoRange "-framework CoreVideo"
6095     check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferTransferFunction_SMPTE_ST_2084_PQ "-framework CoreVideo"
6096     check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferTransferFunction_ITU_R_2100_HLG "-framework CoreVideo"
6097     check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferTransferFunction_Linear "-framework CoreVideo"
6098 }
6099
6100 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
6101
6102 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
6103 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
6104 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
6105 check_type "windows.h d3d11.h" "ID3D11VideoContext"
6106 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
6107
6108 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
6109 check_type "vdpau/vdpau.h" "VdpPictureInfoVP9"
6110
6111 if [ -z "$nvccflags" ]; then
6112     nvccflags=$nvccflags_default
6113 fi
6114
6115 if enabled x86_64 || enabled ppc64 || enabled aarch64; then
6116     nvccflags="$nvccflags -m64"
6117 else
6118     nvccflags="$nvccflags -m32"
6119 fi
6120
6121 if enabled cuda_nvcc; then
6122     nvccflags="$nvccflags -ptx"
6123 else
6124     nvccflags="$nvccflags -S -nocudalib -nocudainc --cuda-device-only -include ${source_link}/compat/cuda/cuda_runtime.h"
6125     check_nvcc cuda_llvm
6126 fi
6127
6128 if ! disabled ffnvcodec; then
6129     ffnv_hdr_list="ffnvcodec/nvEncodeAPI.h ffnvcodec/dynlink_cuda.h ffnvcodec/dynlink_cuviddec.h ffnvcodec/dynlink_nvcuvid.h"
6130     check_pkg_config ffnvcodec "ffnvcodec >= 9.0.18.0" "$ffnv_hdr_list" "" || \
6131       check_pkg_config ffnvcodec "ffnvcodec >= 8.2.15.8 ffnvcodec < 8.3" "$ffnv_hdr_list" "" || \
6132       check_pkg_config ffnvcodec "ffnvcodec >= 8.1.24.9 ffnvcodec < 8.2" "$ffnv_hdr_list" "" || \
6133       check_pkg_config ffnvcodec "ffnvcodec >= 8.0.14.9 ffnvcodec < 8.1" "$ffnv_hdr_list" ""
6134 fi
6135
6136 check_cpp_condition winrt windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)"
6137
6138 if ! disabled w32threads && ! enabled pthreads; then
6139     check_func_headers "windows.h process.h" _beginthreadex &&
6140         check_type "windows.h" CONDITION_VARIABLE &&
6141         check_type "windows.h" INIT_ONCE &&
6142         enable w32threads || disable w32threads
6143     if ! enabled w32threads && enabled winrt; then
6144         check_func_headers "windows.h" CreateThread &&
6145             enable w32threads || disable w32threads
6146     fi
6147 fi
6148
6149 # check for some common methods of building with pthread support
6150 # do this before the optional library checks as some of them require pthreads
6151 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
6152     if check_lib pthreads pthread.h pthread_join   -pthread &&
6153        check_lib pthreads pthread.h pthread_create -pthread; then
6154         add_cflags -pthread
6155     elif check_lib pthreads pthread.h pthread_join   -pthreads &&
6156          check_lib pthreads pthread.h pthread_create -pthreads; then
6157         add_cflags -pthreads
6158     elif check_lib pthreads pthread.h pthread_join   -ldl -pthread &&
6159          check_lib pthreads pthread.h pthread_create -ldl -pthread; then
6160         add_cflags -ldl -pthread
6161     elif check_lib pthreads pthread.h pthread_join   -lpthreadGC2 &&
6162          check_lib pthreads pthread.h pthread_create -lpthreadGC2; then
6163         :
6164     elif check_lib pthreads pthread.h pthread_join   -lpthread &&
6165          check_lib pthreads pthread.h pthread_create -lpthread; then
6166         :
6167     elif check_func pthread_join && check_func pthread_create; then
6168         enable pthreads
6169     fi
6170     check_cc pthreads "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER"
6171
6172     if enabled pthreads; then
6173         check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
6174         check_func pthread_cancel $pthreads_extralibs
6175     fi
6176 fi
6177
6178 enabled  zlib && { check_pkg_config zlib zlib "zlib.h" zlibVersion ||
6179                    check_lib zlib   zlib.h      zlibVersion    -lz; }
6180 enabled bzlib && check_lib bzlib bzlib.h BZ2_bzlibVersion    -lbz2
6181 enabled  lzma && check_lib lzma   lzma.h lzma_version_number -llzma
6182
6183 # On some systems dynamic loading requires no extra linker flags
6184 check_lib libdl dlfcn.h "dlopen dlsym" || check_lib libdl dlfcn.h "dlopen dlsym" -ldl
6185
6186 check_lib libm math.h sin -lm
6187
6188 atan2f_args=2
6189 copysign_args=2
6190 hypot_args=2
6191 ldexpf_args=2
6192 powf_args=2
6193
6194 for func in $MATH_FUNCS; do
6195     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
6196 done
6197
6198 for func in $COMPLEX_FUNCS; do
6199     eval check_complexfunc $func \${${func}_args:-1}
6200 done
6201
6202 # these are off by default, so fail if requested and not available
6203 enabled cuda_nvcc         && { check_nvcc cuda_nvcc || die "ERROR: failed checking for nvcc."; }
6204 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
6205 enabled decklink          && { require_headers DeckLinkAPI.h &&
6206                                { test_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a090500" || die "ERROR: Decklink API version must be >= 10.9.5."; } }
6207 enabled frei0r            && require_headers "frei0r.h dlfcn.h"
6208 enabled gmp               && require gmp gmp.h mpz_export -lgmp
6209 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init
6210 enabled jni               && { [ $target_os = "android" ] && check_headers jni.h && enabled pthreads || die "ERROR: jni not found"; }
6211 enabled ladspa            && require_headers "ladspa.h dlfcn.h"
6212 enabled libaom            && require_pkg_config libaom "aom >= 1.0.0" aom/aom_codec.h aom_codec_version
6213 enabled libaribb24        && { check_pkg_config libaribb24 "aribb24 > 1.0.3" "aribb24/aribb24.h" arib_instance_new ||
6214                                { enabled gpl && require_pkg_config libaribb24 aribb24 "aribb24/aribb24.h" arib_instance_new; } ||
6215                                die "ERROR: libaribb24 requires version higher than 1.0.3 or --enable-gpl."; }
6216 enabled lv2               && require_pkg_config lv2 lilv-0 "lilv/lilv.h" lilv_world_new
6217 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
6218 enabled libass            && require_pkg_config libass libass ass/ass.h ass_library_init
6219 enabled libbluray         && require_pkg_config libbluray libbluray libbluray/bluray.h bd_open
6220 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
6221 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
6222                              { check_lib libcelt celt/celt.h celt_decoder_create_custom -lcelt0 ||
6223                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
6224 enabled libcaca           && require_pkg_config libcaca caca caca.h caca_create_canvas
6225 enabled libcodec2         && require libcodec2 codec2/codec2.h codec2_create -lcodec2
6226 enabled libdav1d          && require_pkg_config libdav1d "dav1d >= 0.4.0" "dav1d/dav1d.h" dav1d_version
6227 enabled libdavs2          && require_pkg_config libdavs2 "davs2 >= 1.6.0" davs2.h davs2_decoder_open
6228 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
6229 enabled libdrm            && require_pkg_config libdrm libdrm xf86drm.h drmGetVersion
6230 enabled libfdk_aac        && { check_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
6231                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
6232                                  warn "using libfdk without pkg-config"; } }
6233 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"
6234 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_extralibs
6235 enabled fontconfig        && enable libfontconfig
6236 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
6237 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
6238 enabled libfribidi        && require_pkg_config libfribidi fribidi fribidi.h fribidi_version_info
6239 enabled libgme            && { check_pkg_config libgme libgme gme/gme.h gme_new_emu ||
6240                                require libgme gme/gme.h gme_new_emu -lgme -lstdc++; }
6241 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
6242                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
6243                                done || die "ERROR: libgsm not found"; }
6244 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc $pthreads_extralibs
6245 enabled libklvanc         && require libklvanc libklvanc/vanc.h klvanc_context_create -lklvanc
6246 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
6247 enabled liblensfun        && require_pkg_config liblensfun lensfun lensfun.h lf_db_new
6248 # While it may appear that require is being used as a pkg-config
6249 # fallback for libmfx, it is actually being used to detect a different
6250 # installation route altogether.  If libmfx is installed via the Intel
6251 # Media SDK or Intel Media Server Studio, these don't come with
6252 # pkg-config support.  Instead, users should make sure that the build
6253 # can find the libraries and headers through other means.
6254 enabled libmfx            && { check_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit ||
6255                                { require libmfx "mfx/mfxvideo.h" MFXInit "-llibmfx $advapi32_extralibs" && warn "using libmfx without pkg-config"; } }
6256 if enabled libmfx; then
6257    check_cc MFX_CODEC_VP9 "mfx/mfxvp9.h mfx/mfxstructures.h" "MFX_CODEC_VP9"
6258 fi
6259
6260 enabled libmodplug        && require_pkg_config libmodplug libmodplug libmodplug/modplug.h ModPlug_Load
6261 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame $libm_extralibs
6262 enabled libmysofa         && { check_pkg_config libmysofa libmysofa mysofa.h mysofa_neighborhood_init_withstepdefine ||
6263                                require libmysofa mysofa.h mysofa_neighborhood_init_withstepdefine -lmysofa $zlib_extralibs; }
6264 enabled libnpp            && { check_lib libnpp npp.h nppGetLibVersion -lnppig -lnppicc -lnppc -lnppidei ||
6265                                check_lib libnpp npp.h nppGetLibVersion -lnppi -lnppc -lnppidei ||
6266                                die "ERROR: libnpp not found"; }
6267 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
6268 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
6269 enabled libopencv         && { check_headers opencv2/core/core_c.h &&
6270                                { check_pkg_config libopencv opencv opencv2/core/core_c.h cvCreateImageHeader ||
6271                                  require libopencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
6272                                require_pkg_config libopencv opencv opencv/cxcore.h cvCreateImageHeader; }
6273 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
6274 enabled libopenjpeg       && { check_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version ||
6275                                { require_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } }
6276 enabled libopenmpt        && require_pkg_config libopenmpt "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create -lstdc++ && append libopenmpt_extralibs "-lstdc++"
6277 enabled libopus           && {
6278     enabled libopus_decoder && {
6279         require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
6280     }
6281     enabled libopus_encoder && {
6282         require_pkg_config libopus opus opus_multistream.h opus_multistream_surround_encoder_create
6283     }
6284 }
6285 enabled libpulse          && require_pkg_config libpulse libpulse pulse/pulseaudio.h pa_context_new
6286 enabled librsvg           && require_pkg_config librsvg librsvg-2.0 librsvg-2.0/librsvg/rsvg.h rsvg_handle_render_cairo
6287 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
6288 enabled librubberband     && require_pkg_config librubberband "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new -lstdc++ && append librubberband_extralibs "-lstdc++"
6289 enabled libshine          && require_pkg_config libshine shine shine/layer3.h shine_encode_buffer
6290 enabled libsmbclient      && { check_pkg_config libsmbclient smbclient libsmbclient.h smbc_init ||
6291                                require libsmbclient libsmbclient.h smbc_init -lsmbclient; }
6292 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy -lstdc++
6293 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
6294 enabled libssh            && require_pkg_config libssh libssh libssh/sftp.h sftp_init
6295 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init
6296 enabled libsrt            && require_pkg_config libsrt "srt >= 1.3.0" srt/srt.h srt_socket
6297 enabled libtensorflow     && require libtensorflow tensorflow/c/c_api.h TF_Version -ltensorflow
6298 enabled libtesseract      && require_pkg_config libtesseract tesseract tesseract/capi.h TessBaseAPICreate
6299 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
6300 enabled libtls            && require_pkg_config libtls libtls tls.h tls_configure
6301 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
6302                              { check_lib libtwolame twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
6303                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
6304 enabled libv4l2           && require_pkg_config libv4l2 libv4l2 libv4l2.h v4l2_ioctl
6305 enabled libvidstab        && require_pkg_config libvidstab "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
6306 enabled libvmaf           && require_pkg_config libvmaf "libvmaf >= 1.3.9" libvmaf.h compute_vmaf
6307 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
6308 enabled libvorbis         && require_pkg_config libvorbis vorbis vorbis/codec.h vorbis_info_init &&
6309                              require_pkg_config libvorbisenc vorbisenc vorbis/vorbisenc.h vorbis_encode_init
6310
6311 enabled libvpx            && {
6312     enabled libvpx_vp8_decoder && {
6313         check_pkg_config libvpx_vp8_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
6314             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"
6315     }
6316     enabled libvpx_vp8_encoder && {
6317         check_pkg_config libvpx_vp8_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
6318             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"
6319     }
6320     enabled libvpx_vp9_decoder && {
6321         check_pkg_config libvpx_vp9_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
6322             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"
6323     }
6324     enabled libvpx_vp9_encoder && {
6325         check_pkg_config libvpx_vp9_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
6326             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"
6327     }
6328     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
6329         die "libvpx enabled but no supported decoders found"
6330     fi
6331 }
6332
6333 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
6334 enabled libwebp           && {
6335     enabled libwebp_encoder      && require_pkg_config libwebp "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
6336     enabled libwebp_anim_encoder && check_pkg_config libwebp_anim_encoder "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit; }
6337 enabled libx264           && { check_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode ||
6338                                { require libx264 "stdint.h x264.h" x264_encoder_encode "-lx264 $pthreads_extralibs $libm_extralibs" &&
6339                                  warn "using libx264 without pkg-config"; } } &&
6340                              require_cpp_condition libx264 x264.h "X264_BUILD >= 118" &&
6341                              check_cpp_condition libx262 x264.h "X264_MPEG2"
6342 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
6343                              require_cpp_condition libx265 x265.h "X265_BUILD >= 68"
6344 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode "-lxavs $pthreads_extralibs $libm_extralibs"
6345 enabled libxavs2          && require_pkg_config libxavs2 "xavs2 >= 1.3.0" "stdint.h xavs2.h" xavs2_api_get
6346 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
6347 enabled libzimg           && require_pkg_config libzimg "zimg >= 2.7.0" zimg.h zimg_get_api_version
6348 enabled libzmq            && require_pkg_config libzmq "libzmq >= 4.2.1" zmq.h zmq_ctx_new
6349 enabled libzvbi           && require_pkg_config libzvbi zvbi-0.2 libzvbi.h vbi_decoder_new &&
6350                              { test_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
6351                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
6352 enabled libxml2           && require_pkg_config libxml2 libxml-2.0 libxml2/libxml/xmlversion.h xmlCheckVersion
6353 enabled mbedtls           && { check_pkg_config mbedtls mbedtls mbedtls/x509_crt.h mbedtls_x509_crt_init ||
6354                                check_pkg_config mbedtls mbedtls mbedtls/ssl.h mbedtls_ssl_init ||
6355                                check_lib mbedtls mbedtls/ssl.h mbedtls_ssl_init -lmbedtls -lmbedx509 -lmbedcrypto ||
6356                                die "ERROR: mbedTLS not found"; }
6357 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
6358 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
6359                                { ! enabled cross_compile &&
6360                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
6361                                  add_ldflags -L/opt/vc/lib/ &&
6362                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
6363                                die "ERROR: mmal not found" &&
6364                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
6365 enabled openal            && { { for al_extralibs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
6366                                check_lib openal 'AL/al.h' alGetError "${al_extralibs}" && break; done } ||
6367                                die "ERROR: openal not found"; } &&
6368                              { test_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
6369                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
6370 enabled opencl            && { check_pkg_config opencl OpenCL CL/cl.h clEnqueueNDRangeKernel ||
6371                                check_lib opencl OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
6372                                check_lib opencl CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
6373                                die "ERROR: opencl not found"; } &&
6374                              { test_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
6375                                test_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
6376                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
6377 enabled opengl            && { check_lib opengl GL/glx.h glXGetProcAddress "-lGL" ||
6378                                check_lib opengl windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
6379                                check_lib opengl OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
6380                                check_lib opengl ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
6381                                die "ERROR: opengl not found."
6382                              }
6383 enabled omx_rpi           && { test_code cc OMX_Core.h OMX_IndexConfigBrcmVideoRequestIFrame ||
6384                                { ! enabled cross_compile &&
6385                                  add_cflags -isystem/opt/vc/include/IL &&
6386                                  test_code cc OMX_Core.h OMX_IndexConfigBrcmVideoRequestIFrame; } ||
6387                                die "ERROR: OpenMAX IL headers from raspberrypi/firmware not found"; } &&
6388                              enable omx
6389 enabled omx               && require_headers OMX_Core.h
6390 enabled openssl           && { check_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
6391                                check_pkg_config openssl openssl openssl/ssl.h SSL_library_init ||
6392                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
6393                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
6394                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
6395                                die "ERROR: openssl not found"; }
6396 enabled pocketsphinx      && require_pkg_config pocketsphinx pocketsphinx pocketsphinx/pocketsphinx.h ps_init
6397 enabled rkmpp             && { require_pkg_config rkmpp rockchip_mpp  rockchip/rk_mpi.h mpp_create &&
6398                                require_pkg_config rockchip_mpp "rockchip_mpp >= 1.3.7" rockchip/rk_mpi.h mpp_create &&
6399                                { enabled libdrm ||
6400                                  die "ERROR: rkmpp requires --enable-libdrm"; }
6401                              }
6402 enabled vapoursynth       && require_pkg_config vapoursynth "vapoursynth-script >= 42" VSScript.h vsscript_init
6403
6404
6405 if enabled gcrypt; then
6406     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
6407     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
6408         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
6409         gcrypt_extralibs=$("${GCRYPT_CONFIG}" --libs)
6410         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_extralibs ||
6411             die "ERROR: gcrypt not found"
6412         add_cflags $gcrypt_cflags
6413     else
6414         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
6415     fi
6416 fi
6417
6418 if enabled sdl2; then
6419     SDL2_CONFIG="${cross_prefix}sdl2-config"
6420     test_pkg_config sdl2 "sdl2 >= 2.0.1 sdl2 < 2.1.0" SDL_events.h SDL_PollEvent
6421     if disabled sdl2 && "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
6422         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
6423         sdl2_extralibs=$("${SDL2_CONFIG}" --libs)
6424         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
6425         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
6426         check_func_headers SDL_events.h SDL_PollEvent $sdl2_extralibs $sdl2_cflags &&
6427             enable sdl2
6428     fi
6429     if test $target_os = "mingw32"; then
6430         sdl2_extralibs=$(filter_out '-mwindows' $sdl2_extralibs)
6431     fi
6432 fi
6433
6434 if enabled decklink; then
6435     case $target_os in
6436         mingw32*|mingw64*|win32|win64)
6437             decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
6438             decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
6439             ;;
6440     esac
6441 fi
6442
6443 enabled securetransport &&
6444     check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
6445     check_lib securetransport "Security/SecureTransport.h Security/Security.h" "SSLCreateContext" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" ||
6446         disable securetransport
6447
6448 enabled securetransport &&
6449     check_func SecItemImport "-Wl,-framework,CoreFoundation -Wl,-framework,Security"
6450
6451 enabled schannel &&
6452     check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
6453     test_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" &&
6454     schannel_extralibs="-lsecur32" ||
6455         disable schannel
6456
6457 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
6458 enabled makeinfo \
6459     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
6460     && enable makeinfo_html || disable makeinfo_html
6461 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
6462 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
6463 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
6464 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
6465
6466 # check V4L2 codecs available in the API
6467 if enabled v4l2_m2m; then
6468     check_headers linux/fb.h
6469     check_headers linux/videodev2.h
6470     test_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6471     check_cc v4l2_m2m linux/videodev2.h "int i = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_VIDEO_M2M | V4L2_BUF_FLAG_LAST;"
6472     check_cc vc1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VC1_ANNEX_G;"
6473     check_cc mpeg1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG1;"
6474     check_cc mpeg2_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG2;"
6475     check_cc mpeg4_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG4;"
6476     check_cc hevc_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_HEVC;"
6477     check_cc h263_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H263;"
6478     check_cc h264_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H264;"
6479     check_cc vp8_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP8;"
6480     check_cc vp9_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP9;"
6481 fi
6482
6483 check_headers sys/videoio.h
6484 test_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6485
6486 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
6487 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
6488 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
6489 # w32api 3.12 had it defined wrong
6490 check_cpp_condition vfwcap_defines vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER"
6491
6492 check_type "dshow.h" IBaseFilter
6493
6494 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
6495 check_headers "dev/bktr/ioctl_meteor.h dev/bktr/ioctl_bt848.h"                   ||
6496     check_headers "machine/ioctl_meteor.h machine/ioctl_bt848.h"                 ||
6497     check_headers "dev/video/meteor/ioctl_meteor.h dev/video/bktr/ioctl_bt848.h" ||
6498     check_headers "dev/ic/bt8xx.h"
6499
6500 if check_struct sys/soundcard.h audio_buf_info bytes; then
6501     enable_sanitized sys/soundcard.h
6502 else
6503     test_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_sanitized sys/soundcard.h
6504     #include <sys/soundcard.h>
6505     audio_buf_info abc;
6506 EOF
6507 fi
6508
6509 enabled alsa && { check_pkg_config alsa alsa "alsa/asoundlib.h" snd_pcm_htimestamp ||
6510                   check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound; }
6511
6512 enabled libjack &&
6513     require_pkg_config libjack jack jack/jack.h jack_port_get_latency_range
6514
6515 enabled sndio && check_lib sndio sndio.h sio_open -lsndio
6516
6517 if enabled libcdio; then
6518     check_pkg_config libcdio libcdio_paranoia "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open ||
6519     check_pkg_config libcdio libcdio_paranoia "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open ||
6520     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6521     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6522     die "ERROR: No usable libcdio/cdparanoia found"
6523 fi
6524
6525 enabled libxcb && check_pkg_config libxcb "xcb >= 1.4" xcb/xcb.h xcb_connect ||
6526     disable libxcb_shm libxcb_shape libxcb_xfixes
6527
6528 if enabled libxcb; then
6529     enabled libxcb_shm    && check_pkg_config libxcb_shm    xcb-shm    xcb/shm.h    xcb_shm_attach
6530     enabled libxcb_shape  && check_pkg_config libxcb_shape  xcb-shape  xcb/shape.h  xcb_shape_get_rectangles
6531     enabled libxcb_xfixes && check_pkg_config libxcb_xfixes xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image
6532 fi
6533
6534 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6535
6536 # d3d11va requires linking directly to dxgi and d3d11 if not building for
6537 # the desktop api partition
6538 test_cpp <<EOF && enable uwp && d3d11va_extralibs="-ldxgi -ld3d11"
6539 #ifdef WINAPI_FAMILY
6540 #include <winapifamily.h>
6541 #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
6542 #error desktop, not uwp
6543 #else
6544 // WINAPI_FAMILY_APP, WINAPI_FAMILY_PHONE_APP => UWP
6545 #endif
6546 #else
6547 #error no family set
6548 #endif
6549 EOF
6550
6551 enabled vaapi &&
6552     check_pkg_config vaapi "libva >= 0.35.0" "va/va.h" vaInitialize
6553
6554 if enabled vaapi; then
6555     check_pkg_config vaapi_drm "libva-drm" "va/va_drm.h" vaGetDisplayDRM
6556
6557     if enabled xlib; then
6558         check_pkg_config vaapi_x11 "libva-x11" "va/va_x11.h" vaGetDisplay
6559     fi
6560
6561     check_cpp_condition vaapi_1 "va/va.h" "VA_CHECK_VERSION(1, 0, 0)"
6562
6563     check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
6564     check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
6565     check_struct "va/va.h va/va_vpp.h" "VAProcPipelineCaps" rotation_flags
6566     check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
6567     check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
6568     check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
6569     check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
6570 fi
6571
6572 if enabled_all opencl libdrm ; then
6573     check_type "CL/cl_intel.h" "clCreateImageFromFdINTEL_fn" &&
6574         enable opencl_drm_beignet
6575     check_func_headers "CL/cl_ext.h" clImportMemoryARM &&
6576         enable opencl_drm_arm
6577 fi
6578
6579 if enabled_all opencl vaapi ; then
6580     if enabled opencl_drm_beignet ; then
6581         enable opencl_vaapi_beignet
6582     else
6583         check_type "CL/cl.h CL/cl_va_api_media_sharing_intel.h" "clCreateFromVA_APIMediaSurfaceINTEL_fn" &&
6584             enable opencl_vaapi_intel_media
6585     fi
6586 fi
6587
6588 if enabled_all opencl dxva2 ; then
6589     check_type "CL/cl_dx9_media_sharing.h" cl_dx9_surface_info_khr &&
6590         enable opencl_dxva2
6591 fi
6592
6593 if enabled_all opencl d3d11va ; then
6594     check_type "CL/cl_d3d11.h" clGetDeviceIDsFromD3D11KHR_fn &&
6595         enable opencl_d3d11
6596 fi
6597
6598 enabled vdpau &&
6599     check_cpp_condition vdpau vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP"
6600
6601 enabled vdpau &&
6602     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
6603
6604 enabled crystalhd && check_lib crystalhd "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd
6605
6606 if enabled x86; then
6607     case $target_os in
6608         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6609             ;;
6610         *)
6611             disable ffnvcodec cuvid nvdec nvenc
6612             ;;
6613     esac
6614 elif enabled ppc64 && ! enabled bigendian; then
6615     case $target_os in
6616         linux)
6617             ;;
6618         *)
6619             disable ffnvcodec cuvid nvdec nvenc
6620             ;;
6621     esac
6622 else
6623     disable ffnvcodec cuvid nvdec nvenc
6624 fi
6625
6626 enabled ffnvcodec && enable cuda
6627
6628 enabled nvenc &&
6629     test_cc -I$source_path <<EOF || disable nvenc
6630 #include <ffnvcodec/nvEncodeAPI.h>
6631 NV_ENCODE_API_FUNCTION_LIST flist;
6632 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6633 int main(void) { return 0; }
6634 EOF
6635
6636 enabled amf &&
6637     check_cpp_condition amf "AMF/core/Version.h" \
6638         "(AMF_VERSION_MAJOR << 48 | AMF_VERSION_MINOR << 32 | AMF_VERSION_RELEASE << 16 | AMF_VERSION_BUILD_NUM) >= 0x0001000400090000"
6639
6640 # Funny iconv installations are not unusual, so check it after all flags have been set
6641 if enabled libc_iconv; then
6642     check_func_headers iconv.h iconv
6643 elif enabled iconv; then
6644     check_func_headers iconv.h iconv || check_lib iconv iconv.h iconv -liconv
6645 fi
6646
6647 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6648
6649 # add some useful compiler flags if supported
6650 check_cflags -Wdeclaration-after-statement
6651 check_cflags -Wall
6652 check_cflags -Wdisabled-optimization
6653 check_cflags -Wpointer-arith
6654 check_cflags -Wredundant-decls
6655 check_cflags -Wwrite-strings
6656 check_cflags -Wtype-limits
6657 check_cflags -Wundef
6658 check_cflags -Wmissing-prototypes
6659 check_cflags -Wno-pointer-to-int-cast
6660 check_cflags -Wstrict-prototypes
6661 check_cflags -Wempty-body
6662
6663 if enabled extra_warnings; then
6664     check_cflags -Wcast-qual
6665     check_cflags -Wextra
6666     check_cflags -Wpedantic
6667 fi
6668
6669 check_disable_warning(){
6670     warning_flag=-W${1#-Wno-}
6671     test_cflags $unknown_warning_flags $warning_flag && add_cflags $1
6672 }
6673
6674 test_cflags -Werror=unused-command-line-argument &&
6675     append unknown_warning_flags "-Werror=unused-command-line-argument"
6676 test_cflags -Werror=unknown-warning-option &&
6677     append unknown_warning_flags "-Werror=unknown-warning-option"
6678
6679 check_disable_warning -Wno-parentheses
6680 check_disable_warning -Wno-switch
6681 check_disable_warning -Wno-format-zero-length
6682 check_disable_warning -Wno-pointer-sign
6683 check_disable_warning -Wno-unused-const-variable
6684 check_disable_warning -Wno-bool-operation
6685 check_disable_warning -Wno-char-subscripts
6686
6687 check_disable_warning_headers(){
6688     warning_flag=-W${1#-Wno-}
6689     test_cflags $warning_flag && add_cflags_headers $1
6690 }
6691
6692 check_disable_warning_headers -Wno-deprecated-declarations
6693 check_disable_warning_headers -Wno-unused-variable
6694
6695 test_cc <<EOF && enable blocks_extension
6696 void (^block)(void);
6697 EOF
6698
6699 # add some linker flags
6700 check_ldflags -Wl,--warn-common
6701 check_ldflags -Wl,-rpath-link=:libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6702 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir && add_ldsoflags -Wl,-rpath,$libdir
6703 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6704
6705 # add some strip flags
6706 check_stripflags -x
6707
6708 enabled neon_clobber_test &&
6709     check_ldflags -Wl,--wrap,avcodec_open2              \
6710                   -Wl,--wrap,avcodec_decode_audio4      \
6711                   -Wl,--wrap,avcodec_decode_video2      \
6712                   -Wl,--wrap,avcodec_decode_subtitle2   \
6713                   -Wl,--wrap,avcodec_encode_audio2      \
6714                   -Wl,--wrap,avcodec_encode_video2      \
6715                   -Wl,--wrap,avcodec_encode_subtitle    \
6716                   -Wl,--wrap,avcodec_send_packet        \
6717                   -Wl,--wrap,avcodec_receive_packet     \
6718                   -Wl,--wrap,avcodec_send_frame         \
6719                   -Wl,--wrap,avcodec_receive_frame      \
6720                   -Wl,--wrap,swr_convert                \
6721                   -Wl,--wrap,avresample_convert ||
6722     disable neon_clobber_test
6723
6724 enabled xmm_clobber_test &&
6725     check_ldflags -Wl,--wrap,avcodec_open2              \
6726                   -Wl,--wrap,avcodec_decode_audio4      \
6727                   -Wl,--wrap,avcodec_decode_video2      \
6728                   -Wl,--wrap,avcodec_decode_subtitle2   \
6729                   -Wl,--wrap,avcodec_encode_audio2      \
6730                   -Wl,--wrap,avcodec_encode_video2      \
6731                   -Wl,--wrap,avcodec_encode_subtitle    \
6732                   -Wl,--wrap,avcodec_send_packet        \
6733                   -Wl,--wrap,avcodec_receive_packet     \
6734                   -Wl,--wrap,avcodec_send_frame         \
6735                   -Wl,--wrap,avcodec_receive_frame      \
6736                   -Wl,--wrap,swr_convert                \
6737                   -Wl,--wrap,avresample_convert         \
6738                   -Wl,--wrap,sws_scale ||
6739     disable xmm_clobber_test
6740
6741 check_ld "cc" proper_dce <<EOF
6742 extern const int array[512];
6743 static inline int func(void) { return array[0]; }
6744 int main(void) { return 0; }
6745 EOF
6746
6747 if enabled proper_dce; then
6748     echo "X { local: *; };" > $TMPV
6749     if test_ldflags -Wl,${version_script},$TMPV; then
6750         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6751         quotes='""'
6752         test_cc <<EOF && enable symver_asm_label
6753 void ff_foo(void) __asm__ ("av_foo@VERSION");
6754 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6755 EOF
6756         test_cc <<EOF && enable symver_gnu_asm
6757 __asm__(".symver ff_foo,av_foo@VERSION");
6758 void ff_foo(void) {}
6759 EOF
6760     fi
6761 fi
6762
6763 if [ -z "$optflags" ]; then
6764     if enabled small; then
6765         optflags=$cflags_size
6766     elif enabled optimizations; then
6767         optflags=$cflags_speed
6768     else
6769         optflags=$cflags_noopt
6770     fi
6771 fi
6772
6773 check_optflags(){
6774     check_cflags "$@"
6775     enabled lto && check_ldflags "$@"
6776 }
6777
6778 check_optflags $optflags
6779 check_optflags -fno-math-errno
6780 check_optflags -fno-signed-zeros
6781
6782 if enabled lto; then
6783     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6784     check_cflags  -flto
6785     check_ldflags -flto $cpuflags
6786     disable inline_asm_direct_symbol_refs
6787 fi
6788
6789 enabled ftrapv && check_cflags -ftrapv
6790
6791 test_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6792 int x;
6793 EOF
6794
6795
6796 if enabled icc; then
6797     # Just warnings, no remarks
6798     check_cflags -w1
6799     # -wd: Disable following warnings
6800     # 144, 167, 556: -Wno-pointer-sign
6801     # 188: enumerated type mixed with another type
6802     # 1292: attribute "foo" ignored
6803     # 1419: external declaration in primary source file
6804     # 10006: ignoring unknown option -fno-signed-zeros
6805     # 10148: ignoring unknown option -Wno-parentheses
6806     # 10156: ignoring option '-W'; no argument required
6807     # 13200: No EMMS instruction before call to function
6808     # 13203: No EMMS instruction before return from function
6809     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6810     # 11030: Warning unknown option --as-needed
6811     # 10156: ignoring option '-export'; no argument required
6812     check_ldflags -wd10156,11030
6813     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6814     enable ebp_available
6815     # The test above does not test linking
6816     enabled lto && disable symver_asm_label
6817     if enabled x86_32; then
6818         icc_version=$($cc -dumpversion)
6819         test ${icc_version%%.*} -ge 11 &&
6820             check_cflags -falign-stack=maintain-16-byte ||
6821             disable aligned_stack
6822     fi
6823 elif enabled gcc; then
6824     check_optflags -fno-tree-vectorize
6825     check_cflags -Werror=format-security
6826     check_cflags -Werror=implicit-function-declaration
6827     check_cflags -Werror=missing-prototypes
6828     check_cflags -Werror=return-type
6829     check_cflags -Werror=vla
6830     check_cflags -Wformat
6831     check_cflags -fdiagnostics-color=auto
6832     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6833     if enabled x86_32; then
6834         case $target_os in
6835         *bsd*)
6836             # BSDs don't guarantee a 16 byte aligned stack, but we can
6837             # request GCC to try to maintain 16 byte alignment throughout
6838             # function calls. Library entry points that might call assembly
6839             # functions align the stack. (The parameter means 2^4 bytes.)
6840             check_cflags -mpreferred-stack-boundary=4
6841             ;;
6842         esac
6843     fi
6844 elif enabled llvm_gcc; then
6845     check_cflags -mllvm -stack-alignment=16
6846 elif enabled clang; then
6847     if enabled x86_32; then
6848         # Clang doesn't support maintaining alignment without assuming the
6849         # same alignment in every function. If 16 byte alignment would be
6850         # enabled, one would also have to either add attribute_align_arg on
6851         # every single entry point into the libraries or enable -mstackrealign
6852         # (doing stack realignment in every single function).
6853         case $target_os in
6854         mingw32|win32|*bsd*)
6855             disable aligned_stack
6856             ;;
6857         *)
6858             check_cflags -mllvm -stack-alignment=16
6859             check_cflags -mstack-alignment=16
6860             ;;
6861         esac
6862     else
6863         check_cflags -mllvm -stack-alignment=16
6864         check_cflags -mstack-alignment=16
6865     fi
6866     check_cflags -Qunused-arguments
6867     check_cflags -Werror=implicit-function-declaration
6868     check_cflags -Werror=missing-prototypes
6869     check_cflags -Werror=return-type
6870 elif enabled cparser; then
6871     add_cflags -Wno-missing-variable-declarations
6872     add_cflags -Wno-empty-statement
6873 elif enabled armcc; then
6874     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6875     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6876     # 2523: use of inline assembly is deprecated
6877     add_cflags -W${armcc_opt},--diag_suppress=2523
6878     add_cflags -W${armcc_opt},--diag_suppress=1207
6879     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6880     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6881     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6882     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6883 elif enabled pathscale; then
6884     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6885     disable inline_asm
6886 elif enabled_any msvc icl; then
6887     enabled x86_32 && disable aligned_stack
6888     enabled_all x86_32 debug && add_cflags -Oy-
6889     enabled debug && add_ldflags -debug
6890     enable pragma_deprecated
6891     if enabled icl; then
6892         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6893         # (correctly) on icl 13.x.
6894         test_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6895             add_cflags -Qansi-alias
6896         # Some inline asm is not compilable in debug
6897         if enabled debug; then
6898             disable ebp_available
6899             disable ebx_available
6900         fi
6901     fi
6902     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6903     check_cpp_condition log2 crtversion.h "_VC_CRT_MAJOR_VERSION >= 12"
6904     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6905     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6906     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6907     # MSVC 2013 and newer can handle it fine.
6908     # If this declspec fails, force including stdlib.h before the restrict redefinition
6909     # happens in config.h.
6910     if [ $restrict_keyword != restrict ]; then
6911         test_cc <<EOF || add_cflags -FIstdlib.h
6912 __declspec($restrict_keyword) void *foo(int);
6913 EOF
6914     fi
6915     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6916     # Issue has been fixed in MSVC v19.00.24218.
6917     test_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6918         check_cflags -d2SSAOptimizer-
6919     # enable utf-8 source processing on VS2015 U2 and newer
6920     test_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6921         add_cflags -utf-8
6922 fi
6923
6924 for pfx in "" host_; do
6925     varname=${pfx%_}cc_type
6926     eval "type=\$$varname"
6927     if [ "$type" = "msvc" ]; then
6928         test_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6929 static inline int foo(int a) { return a; }
6930 EOF
6931     fi
6932 done
6933
6934 case $as_type in
6935     clang)
6936         add_asflags -Qunused-arguments
6937     ;;
6938 esac
6939
6940 case $ld_type in
6941     clang)
6942         check_ldflags -Qunused-arguments
6943     ;;
6944 esac
6945
6946 enable frame_thread_encoder
6947
6948 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6949
6950 check_deps $CONFIG_LIST       \
6951            $CONFIG_EXTRA      \
6952            $HAVE_LIST         \
6953            $ALL_COMPONENTS    \
6954
6955 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"
6956 enabled avresample && warn "Building with deprecated library libavresample"
6957
6958 case $target_os in
6959 haiku)
6960     disable memalign
6961     disable posix_memalign
6962     ;;
6963 *-dos|freedos|opendos)
6964     if test_cpp_condition sys/version.h "defined(__DJGPP__) && __DJGPP__ == 2 && __DJGPP_MINOR__ == 5"; then
6965         disable memalign
6966     fi
6967     ;;
6968 esac
6969
6970 flatten_extralibs(){
6971     nested_entries=
6972     list_name=$1
6973     eval list=\$${1}
6974     for entry in $list; do
6975         entry_copy=$entry
6976         resolve entry_copy
6977         flat_entries=
6978         for e in $entry_copy; do
6979             case $e in
6980                 *_extralibs) nested_entries="$nested_entries$e ";;
6981                           *) flat_entries="$flat_entries$e ";;
6982             esac
6983         done
6984         eval $entry="\$flat_entries"
6985     done
6986     append $list_name "$nested_entries"
6987
6988     resolve nested_entries
6989     if test -n "$(filter '*_extralibs' $nested_entries)"; then
6990         flatten_extralibs $list_name
6991     fi
6992 }
6993
6994 flatten_extralibs_wrapper(){
6995     list_name=$1
6996     flatten_extralibs $list_name
6997     unique $list_name
6998     resolve $list_name
6999     eval $list_name=\$\(\$ldflags_filter \$$list_name\)
7000     eval printf \''%s'\' \""\$$list_name"\"
7001 }
7002
7003 for linkunit in $LIBRARY_LIST; do
7004     unset current_extralibs
7005     eval components=\$$(toupper ${linkunit})_COMPONENTS_LIST
7006     for comp in ${components}; do
7007         enabled $comp || continue
7008         comp_extralibs="${comp}_extralibs"
7009         append current_extralibs $comp_extralibs
7010     done
7011     eval prepend ${linkunit}_extralibs $current_extralibs
7012 done
7013
7014 for linkunit in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
7015     eval ${linkunit}_extralibs=\$\(flatten_extralibs_wrapper ${linkunit}_extralibs\)
7016 done
7017
7018 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
7019
7020 for thread in $THREADS_LIST; do
7021     if enabled $thread; then
7022         test -n "$thread_type" &&
7023             die "ERROR: Only one thread type must be selected." ||
7024             thread_type="$thread"
7025     fi
7026 done
7027
7028 if disabled stdatomic; then
7029     if enabled atomics_gcc; then
7030         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
7031     elif enabled atomics_win32; then
7032         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
7033     elif enabled atomics_suncc; then
7034         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
7035     elif enabled pthreads; then
7036         add_compat atomics/pthread/stdatomic.o
7037         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
7038     else
7039         enabled threads && die "Threading is enabled, but no atomics are available"
7040         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
7041     fi
7042 fi
7043
7044 # Check if requested libraries were found.
7045 for lib in $AUTODETECT_LIBS; do
7046     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
7047 done
7048
7049 enabled zlib && add_cppflags -DZLIB_CONST
7050
7051 # conditional library dependencies, in any order
7052 enabled afftdn_filter       && prepend avfilter_deps "avcodec"
7053 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
7054 enabled afir_filter         && prepend avfilter_deps "avcodec"
7055 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
7056 enabled aresample_filter    && prepend avfilter_deps "swresample"
7057 enabled atempo_filter       && prepend avfilter_deps "avcodec"
7058 enabled bm3d_filter         && prepend avfilter_deps "avcodec"
7059 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
7060 enabled convolve_filter     && prepend avfilter_deps "avcodec"
7061 enabled deconvolve_filter   && prepend avfilter_deps "avcodec"
7062 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
7063 enabled elbg_filter         && prepend avfilter_deps "avcodec"
7064 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
7065 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
7066 enabled firequalizer_filter && prepend avfilter_deps "avcodec"
7067 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
7068 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
7069 enabled pan_filter          && prepend avfilter_deps "swresample"
7070 enabled pp_filter           && prepend avfilter_deps "postproc"
7071 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
7072 enabled resample_filter && prepend avfilter_deps "avresample"
7073 enabled sab_filter          && prepend avfilter_deps "swscale"
7074 enabled scale_filter    && prepend avfilter_deps "swscale"
7075 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
7076 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
7077 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
7078 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
7079 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
7080 enabled signature_filter    && prepend avfilter_deps "avcodec avformat"
7081 enabled smartblur_filter    && prepend avfilter_deps "swscale"
7082 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
7083 enabled spp_filter          && prepend avfilter_deps "avcodec"
7084 enabled sr_filter           && prepend avfilter_deps "avformat swscale"
7085 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
7086 enabled uspp_filter         && prepend avfilter_deps "avcodec"
7087 enabled zoompan_filter      && prepend avfilter_deps "swscale"
7088
7089 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
7090
7091 #FIXME
7092 enabled_any sdl2_outdev opengl_outdev && enabled sdl2 &&
7093     add_cflags $(filter_out '-Dmain=SDL_main' $sdl2_cflags)
7094
7095 enabled opus_decoder    && prepend avcodec_deps "swresample"
7096
7097 # reorder the items at var $1 to align with the items order at var $2 .
7098 # die if an item at $1 is not at $2 .
7099 reorder_by(){
7100     eval rb_in=\$$1
7101     eval rb_ordered=\$$2
7102
7103     for rb in $rb_in; do
7104         is_in $rb $rb_ordered || die "$rb at \$$1 is not at \$$2"
7105     done
7106
7107     rb_out=
7108     for rb in $rb_ordered; do
7109         is_in $rb $rb_in && rb_out="$rb_out$rb "
7110     done
7111     eval $1=\$rb_out
7112 }
7113
7114 # deps-expand fflib $1:  N x {append all expanded deps; unique}
7115 # within a set of N items, N expansions are enough to expose a cycle.
7116 expand_deps(){
7117     unique ${1}_deps  # required for the early break test.
7118     for dummy in $LIBRARY_LIST; do  # N iteratios
7119         eval deps=\$${1}_deps
7120         append ${1}_deps $(map 'eval echo \$${v}_deps' $deps)
7121         unique ${1}_deps
7122         eval '[ ${#deps} = ${#'${1}_deps'} ]' && break  # doesn't expand anymore
7123     done
7124
7125     eval is_in $1 \$${1}_deps && die "Dependency cycle at ${1}_deps"
7126     reorder_by ${1}_deps LIBRARY_LIST  # linking order is expected later
7127 }
7128
7129 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
7130 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
7131
7132 map 'expand_deps $v' $LIBRARY_LIST
7133
7134 if test "$quiet" != "yes"; then
7135
7136 echo "install prefix            $prefix"
7137 echo "source path               $source_path"
7138 echo "C compiler                $cc"
7139 echo "C library                 $libc_type"
7140 if test "$host_cc" != "$cc"; then
7141     echo "host C compiler           $host_cc"
7142     echo "host C library            $host_libc_type"
7143 fi
7144 echo "ARCH                      $arch ($cpu)"
7145 if test "$build_suffix" != ""; then
7146     echo "build suffix              $build_suffix"
7147 fi
7148 if test "$progs_suffix" != ""; then
7149     echo "progs suffix              $progs_suffix"
7150 fi
7151 if test "$extra_version" != ""; then
7152     echo "version string suffix     $extra_version"
7153 fi
7154 echo "big-endian                ${bigendian-no}"
7155 echo "runtime cpu detection     ${runtime_cpudetect-no}"
7156 if enabled x86; then
7157     echo "standalone assembly       ${x86asm-no}"
7158     echo "x86 assembler             ${x86asmexe}"
7159     echo "MMX enabled               ${mmx-no}"
7160     echo "MMXEXT enabled            ${mmxext-no}"
7161     echo "3DNow! enabled            ${amd3dnow-no}"
7162     echo "3DNow! extended enabled   ${amd3dnowext-no}"
7163     echo "SSE enabled               ${sse-no}"
7164     echo "SSSE3 enabled             ${ssse3-no}"
7165     echo "AESNI enabled             ${aesni-no}"
7166     echo "AVX enabled               ${avx-no}"
7167     echo "AVX2 enabled              ${avx2-no}"
7168     echo "AVX-512 enabled           ${avx512-no}"
7169     echo "XOP enabled               ${xop-no}"
7170     echo "FMA3 enabled              ${fma3-no}"
7171     echo "FMA4 enabled              ${fma4-no}"
7172     echo "i686 features enabled     ${i686-no}"
7173     echo "CMOV is fast              ${fast_cmov-no}"
7174     echo "EBX available             ${ebx_available-no}"
7175     echo "EBP available             ${ebp_available-no}"
7176 fi
7177 if enabled aarch64; then
7178     echo "NEON enabled              ${neon-no}"
7179     echo "VFP enabled               ${vfp-no}"
7180 fi
7181 if enabled arm; then
7182     echo "ARMv5TE enabled           ${armv5te-no}"
7183     echo "ARMv6 enabled             ${armv6-no}"
7184     echo "ARMv6T2 enabled           ${armv6t2-no}"
7185     echo "VFP enabled               ${vfp-no}"
7186     echo "NEON enabled              ${neon-no}"
7187     echo "THUMB enabled             ${thumb-no}"
7188 fi
7189 if enabled mips; then
7190     echo "MIPS FPU enabled          ${mipsfpu-no}"
7191     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
7192     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
7193     echo "MIPS MSA enabled          ${msa-no}"
7194     echo "MIPS MSA2 enabled         ${msa2-no}"
7195     echo "LOONGSON MMI enabled      ${mmi-no}"
7196 fi
7197 if enabled ppc; then
7198     echo "AltiVec enabled           ${altivec-no}"
7199     echo "VSX enabled               ${vsx-no}"
7200     echo "POWER8 enabled            ${power8-no}"
7201     echo "PPC 4xx optimizations     ${ppc4xx-no}"
7202     echo "dcbzl available           ${dcbzl-no}"
7203 fi
7204 echo "debug symbols             ${debug-no}"
7205 echo "strip symbols             ${stripping-no}"
7206 echo "optimize for size         ${small-no}"
7207 echo "optimizations             ${optimizations-no}"
7208 echo "static                    ${static-no}"
7209 echo "shared                    ${shared-no}"
7210 echo "postprocessing support    ${postproc-no}"
7211 echo "network support           ${network-no}"
7212 echo "threading support         ${thread_type-no}"
7213 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
7214 echo "texi2html enabled         ${texi2html-no}"
7215 echo "perl enabled              ${perl-no}"
7216 echo "pod2man enabled           ${pod2man-no}"
7217 echo "makeinfo enabled          ${makeinfo-no}"
7218 echo "makeinfo supports HTML    ${makeinfo_html-no}"
7219 test -n "$random_seed" &&
7220     echo "random seed               ${random_seed}"
7221 echo
7222
7223 echo "External libraries:"
7224 print_enabled '' $EXTERNAL_LIBRARY_LIST $EXTERNAL_AUTODETECT_LIBRARY_LIST | print_in_columns
7225 echo
7226
7227 echo "External libraries providing hardware acceleration:"
7228 print_enabled '' $HWACCEL_LIBRARY_LIST $HWACCEL_AUTODETECT_LIBRARY_LIST | print_in_columns
7229 echo
7230
7231 echo "Libraries:"
7232 print_enabled '' $LIBRARY_LIST | print_in_columns
7233 echo
7234
7235 echo "Programs:"
7236 print_enabled '' $PROGRAM_LIST | print_in_columns
7237 echo
7238
7239 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
7240     echo "Enabled ${type}s:"
7241     eval list=\$$(toupper $type)_LIST
7242     print_enabled '_*' $list | print_in_columns
7243     echo
7244 done
7245
7246 if test -n "$ignore_tests"; then
7247     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
7248     echo "Ignored FATE tests:"
7249     echo $ignore_tests | print_in_columns
7250     echo
7251 fi
7252
7253 echo "License: $license"
7254
7255 fi # test "$quiet" != "yes"
7256
7257 if test -n "$WARN_IF_GETS_DISABLED_LIST"; then
7258     for cfg in $WARN_IF_GETS_DISABLED_LIST; do
7259         if disabled $cfg; then
7260             varname=${cfg}_disable_reason
7261             eval "warn \"Disabled $cfg because \$$varname\""
7262         fi
7263     done
7264 fi
7265
7266 if test -n "$WARNINGS"; then
7267     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
7268     enabled fatal_warnings && exit 1
7269 fi
7270
7271 test -e Makefile || echo "include $source_path/Makefile" > Makefile
7272
7273 esc(){
7274     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
7275 }
7276
7277 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" > ffbuild/config.fate
7278
7279 enabled stripping || strip="echo skipping strip"
7280 enabled stripping || striptype=""
7281
7282 config_files="$TMPH ffbuild/config.mak doc/config.texi"
7283
7284 cat > ffbuild/config.mak <<EOF
7285 # Automatically generated by configure - do not modify!
7286 ifndef FFMPEG_CONFIG_MAK
7287 FFMPEG_CONFIG_MAK=1
7288 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
7289 prefix=$prefix
7290 LIBDIR=\$(DESTDIR)$libdir
7291 SHLIBDIR=\$(DESTDIR)$shlibdir
7292 INCDIR=\$(DESTDIR)$incdir
7293 BINDIR=\$(DESTDIR)$bindir
7294 DATADIR=\$(DESTDIR)$datadir
7295 DOCDIR=\$(DESTDIR)$docdir
7296 MANDIR=\$(DESTDIR)$mandir
7297 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
7298 INSTALL_NAME_DIR=$install_name_dir
7299 SRC_PATH=$source_path
7300 SRC_LINK=$source_link
7301 ifndef MAIN_MAKEFILE
7302 SRC_PATH:=\$(SRC_PATH:.%=..%)
7303 endif
7304 CC_IDENT=$cc_ident
7305 ARCH=$arch
7306 INTRINSICS=$intrinsics
7307 EXTERN_PREFIX=$extern_prefix
7308 CC=$cc
7309 CXX=$cxx
7310 AS=$as
7311 OBJCC=$objcc
7312 LD=$ld
7313 DEPCC=$dep_cc
7314 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
7315 DEPAS=$as
7316 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
7317 X86ASM=$x86asmexe
7318 DEPX86ASM=$x86asmexe
7319 DEPX86ASMFLAGS=\$(X86ASMFLAGS)
7320 AR=$ar
7321 ARFLAGS=$arflags
7322 AR_O=$ar_o
7323 AR_CMD=$ar
7324 NM_CMD=$nm
7325 RANLIB=$ranlib
7326 STRIP=$strip
7327 STRIPTYPE=$striptype
7328 NVCC=$nvcc
7329 CP=cp -p
7330 LN_S=$ln_s
7331 CPPFLAGS=$CPPFLAGS
7332 CFLAGS=$CFLAGS
7333 CXXFLAGS=$CXXFLAGS
7334 OBJCFLAGS=$OBJCFLAGS
7335 ASFLAGS=$ASFLAGS
7336 NVCCFLAGS=$nvccflags
7337 AS_C=$AS_C
7338 AS_O=$AS_O
7339 OBJCC_C=$OBJCC_C
7340 OBJCC_E=$OBJCC_E
7341 OBJCC_O=$OBJCC_O
7342 CC_C=$CC_C
7343 CC_E=$CC_E
7344 CC_O=$CC_O
7345 CXX_C=$CXX_C
7346 CXX_O=$CXX_O
7347 NVCC_C=$NVCC_C
7348 NVCC_O=$NVCC_O
7349 LD_O=$LD_O
7350 X86ASM_O=$X86ASM_O
7351 LD_LIB=$LD_LIB
7352 LD_PATH=$LD_PATH
7353 DLLTOOL=$dlltool
7354 WINDRES=$windres
7355 DEPWINDRES=$dep_cc
7356 DOXYGEN=$doxygen
7357 LDFLAGS=$LDFLAGS
7358 LDEXEFLAGS=$LDEXEFLAGS
7359 LDSOFLAGS=$LDSOFLAGS
7360 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
7361 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
7362 X86ASMFLAGS=$X86ASMFLAGS
7363 BUILDSUF=$build_suffix
7364 PROGSSUF=$progs_suffix
7365 FULLNAME=$FULLNAME
7366 LIBPREF=$LIBPREF
7367 LIBSUF=$LIBSUF
7368 LIBNAME=$LIBNAME
7369 SLIBPREF=$SLIBPREF
7370 SLIBSUF=$SLIBSUF
7371 EXESUF=$EXESUF
7372 EXTRA_VERSION=$extra_version
7373 CCDEP=$CCDEP
7374 CXXDEP=$CXXDEP
7375 CCDEP_FLAGS=$CCDEP_FLAGS
7376 ASDEP=$ASDEP
7377 ASDEP_FLAGS=$ASDEP_FLAGS
7378 X86ASMDEP=$X86ASMDEP
7379 X86ASMDEP_FLAGS=$X86ASMDEP_FLAGS
7380 CC_DEPFLAGS=$CC_DEPFLAGS
7381 AS_DEPFLAGS=$AS_DEPFLAGS
7382 X86ASM_DEPFLAGS=$X86ASM_DEPFLAGS
7383 HOSTCC=$host_cc
7384 HOSTLD=$host_ld
7385 HOSTCFLAGS=$host_cflags
7386 HOSTCPPFLAGS=$host_cppflags
7387 HOSTEXESUF=$HOSTEXESUF
7388 HOSTLDFLAGS=$host_ldflags
7389 HOSTEXTRALIBS=$host_extralibs
7390 DEPHOSTCC=$host_cc
7391 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
7392 HOSTCCDEP=$HOSTCCDEP
7393 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
7394 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
7395 HOSTCC_C=$HOSTCC_C
7396 HOSTCC_O=$HOSTCC_O
7397 HOSTLD_O=$HOSTLD_O
7398 TARGET_EXEC=$target_exec $target_exec_args
7399 TARGET_PATH=$target_path
7400 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
7401 CFLAGS-ffplay=${sdl2_cflags}
7402 CFLAGS_HEADERS=$CFLAGS_HEADERS
7403 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
7404 EXTRALIBS=$extralibs
7405 COMPAT_OBJS=$compat_objs
7406 INSTALL=$install
7407 LIBTARGET=${LIBTARGET}
7408 SLIBNAME=${SLIBNAME}
7409 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
7410 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
7411 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
7412 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
7413 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
7414 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
7415 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
7416 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
7417 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
7418 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
7419 NOREDZONE_FLAGS=$noredzone_flags
7420 LIBFUZZER_PATH=$libfuzzer_path
7421 IGNORE_TESTS=$ignore_tests
7422 EOF
7423
7424 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> ffbuild/config.mak' $LIBRARY_LIST
7425
7426 for entry in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
7427     eval echo "EXTRALIBS-${entry}=\$${entry}_extralibs" >> ffbuild/config.mak
7428 done
7429
7430 cat > $TMPH <<EOF
7431 /* Automatically generated by configure - do not modify! */
7432 #ifndef FFMPEG_CONFIG_H
7433 #define FFMPEG_CONFIG_H
7434 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
7435 #define FFMPEG_LICENSE "$(c_escape $license)"
7436 #define CONFIG_THIS_YEAR 2019
7437 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
7438 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
7439 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
7440 #define av_restrict $restrict_keyword
7441 #define EXTERN_PREFIX "${extern_prefix}"
7442 #define EXTERN_ASM ${extern_prefix}
7443 #define BUILDSUF "$build_suffix"
7444 #define SLIBSUF "$SLIBSUF"
7445 #define HAVE_MMX2 HAVE_MMXEXT
7446 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
7447 EOF
7448
7449 test -n "$assert_level" &&
7450     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
7451
7452 test -n "$malloc_prefix" &&
7453     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
7454
7455 if enabled x86asm; then
7456     append config_files $TMPASM
7457     cat > $TMPASM <<EOF
7458 ; Automatically generated by configure - do not modify!
7459 EOF
7460 fi
7461
7462 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
7463
7464
7465 mkdir -p doc
7466 mkdir -p tests
7467 mkdir -p tests/api
7468 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
7469
7470 print_config ARCH_   "$config_files" $ARCH_LIST
7471 print_config HAVE_   "$config_files" $HAVE_LIST
7472 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
7473                                      $CONFIG_EXTRA      \
7474                                      $ALL_COMPONENTS    \
7475
7476 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
7477 echo "endif # FFMPEG_CONFIG_MAK" >> ffbuild/config.mak
7478
7479 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
7480 cp_if_changed $TMPH config.h
7481 touch ffbuild/.config
7482
7483 enabled x86asm && cp_if_changed $TMPASM config.asm
7484
7485 cat > $TMPH <<EOF
7486 /* Generated by ffmpeg configure */
7487 #ifndef AVUTIL_AVCONFIG_H
7488 #define AVUTIL_AVCONFIG_H
7489 EOF
7490
7491 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
7492
7493 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
7494
7495 cp_if_changed $TMPH libavutil/avconfig.h
7496
7497 # full_filter_name_foo=vf_foo
7498 # full_filter_name_bar=asrc_bar
7499 # ...
7500 eval "$(sed -n "s/^extern AVFilter ff_\([avfsinkrc]\{2,5\}\)_\(.*\);/full_filter_name_\2=\1_\2/p" $source_path/libavfilter/allfilters.c)"
7501
7502 # generate the lists of enabled components
7503 print_enabled_components(){
7504     file=$1
7505     struct_name=$2
7506     name=$3
7507     shift 3
7508     echo "static const $struct_name * const $name[] = {" > $TMPH
7509     for c in $*; do
7510         if enabled $c; then
7511             case $name in
7512                 filter_list)
7513                     eval c=\$full_filter_name_${c%_filter}
7514                 ;;
7515                 indev_list)
7516                     c=${c%_indev}_demuxer
7517                 ;;
7518                 outdev_list)
7519                     c=${c%_outdev}_muxer
7520                 ;;
7521             esac
7522             printf "    &ff_%s,\n" $c >> $TMPH
7523         fi
7524     done
7525     if [ "$name" = "filter_list" ]; then
7526         for c in asrc_abuffer vsrc_buffer asink_abuffer vsink_buffer; do
7527             printf "    &ff_%s,\n" $c >> $TMPH
7528         done
7529     fi
7530     echo "    NULL };" >> $TMPH
7531     cp_if_changed $TMPH $file
7532 }
7533
7534 print_enabled_components libavfilter/filter_list.c AVFilter filter_list $FILTER_LIST
7535 print_enabled_components libavcodec/codec_list.c AVCodec codec_list $CODEC_LIST
7536 print_enabled_components libavcodec/parser_list.c AVCodecParser parser_list $PARSER_LIST
7537 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
7538 print_enabled_components libavformat/demuxer_list.c AVInputFormat demuxer_list $DEMUXER_LIST
7539 print_enabled_components libavformat/muxer_list.c AVOutputFormat muxer_list $MUXER_LIST
7540 print_enabled_components libavdevice/indev_list.c AVInputFormat indev_list $INDEV_LIST
7541 print_enabled_components libavdevice/outdev_list.c AVOutputFormat outdev_list $OUTDEV_LIST
7542 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
7543
7544 # Settings for pkg-config files
7545
7546 cat > $TMPH <<EOF
7547 # Automatically generated by configure - do not modify!
7548 shared=$shared
7549 build_suffix=$build_suffix
7550 prefix=$prefix
7551 libdir=$libdir
7552 incdir=$incdir
7553 rpath=$(enabled rpath && echo "-Wl,-rpath,\${libdir}")
7554 source_path=${source_path}
7555 LIBPREF=${LIBPREF}
7556 LIBSUF=${LIBSUF}
7557 extralibs_avutil="$avutil_extralibs"
7558 extralibs_avcodec="$avcodec_extralibs"
7559 extralibs_avformat="$avformat_extralibs"
7560 extralibs_avdevice="$avdevice_extralibs"
7561 extralibs_avfilter="$avfilter_extralibs"
7562 extralibs_avresample="$avresample_extralibs"
7563 extralibs_postproc="$postproc_extralibs"
7564 extralibs_swscale="$swscale_extralibs"
7565 extralibs_swresample="$swresample_extralibs"
7566 EOF
7567
7568 for lib in $LIBRARY_LIST; do
7569     lib_deps="$(eval echo \$${lib}_deps)"
7570     echo ${lib}_deps=\"$lib_deps\" >> $TMPH
7571 done
7572
7573 cp_if_changed $TMPH ffbuild/config.sh