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-librav1e        enable AV1 encoding via rav1e [no]
 258   --enable-librsvg         enable SVG rasterization via librsvg [no]
 259   --enable-librubberband   enable rubberband needed for rubberband filter [no]
 260   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 261   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 262   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
 263   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
 264   --enable-libsoxr         enable Include libsoxr resampling [no]
 265   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 266   --enable-libsrt          enable Haivision SRT protocol via libsrt [no]
 267   --enable-libssh          enable SFTP protocol via libssh [no]
 268   --enable-libtensorflow   enable TensorFlow as a DNN module backend
 269                            for DNN based filters like sr [no]
 270   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
 271   --enable-libtheora       enable Theora encoding via libtheora [no]
 272   --enable-libtls          enable LibreSSL (via libtls), needed for https support
 273                            if openssl, gnutls or mbedtls is not used [no]
 274   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 275   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 276   --enable-libvidstab      enable video stabilization using vid.stab [no]
 277   --enable-libvmaf         enable vmaf filter via libvmaf [no]
 278   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 279   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 280                            native implementation exists [no]
 281   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 282   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 283   --enable-libwebp         enable WebP encoding via libwebp [no]
 284   --enable-libx264         enable H.264 encoding via x264 [no]
 285   --enable-libx265         enable HEVC encoding via x265 [no]
 286   --enable-libxavs         enable AVS encoding via xavs [no]
 287   --enable-libxavs2        enable AVS2 encoding via xavs2 [no]
 288   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
 289   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
 290   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
 291   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
 292   --enable-libxvid         enable Xvid encoding via xvidcore,
 293                            native MPEG-4/Xvid encoder exists [no]
 294   --enable-libxml2         enable XML parsing using the C library libxml2, needed
 295                            for dash demuxing support [no]
 296   --enable-libzimg         enable z.lib, needed for zscale filter [no]
 297   --enable-libzmq          enable message passing via libzmq [no]
 298   --enable-libzvbi         enable teletext support via libzvbi [no]
 299   --enable-lv2             enable LV2 audio filtering [no]
 300   --disable-lzma           disable lzma [autodetect]
 301   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
 302   --enable-mbedtls         enable mbedTLS, needed for https support
 303                            if openssl, gnutls or libtls is not used [no]
 304   --enable-mediacodec      enable Android MediaCodec support [no]
 305   --enable-libmysofa       enable libmysofa, needed for sofalizer filter [no]
 306   --enable-openal          enable OpenAL 1.1 capture support [no]
 307   --enable-opencl          enable OpenCL processing [no]
 308   --enable-opengl          enable OpenGL rendering [no]
 309   --enable-openssl         enable openssl, needed for https support
 310                            if gnutls, libtls or mbedtls is not used [no]
 311   --enable-pocketsphinx    enable PocketSphinx, needed for asr filter [no]
 312   --disable-sndio          disable sndio support [autodetect]
 313   --disable-schannel       disable SChannel SSP, needed for TLS support on
 314                            Windows if openssl and gnutls are not used [autodetect]
 315   --disable-sdl2           disable sdl2 [autodetect]
 316   --disable-securetransport disable Secure Transport, needed for TLS support
 317                            on OSX if openssl and gnutls are not used [autodetect]
 318   --enable-vapoursynth     enable VapourSynth demuxer [no]
 319   --disable-xlib           disable xlib [autodetect]
 320   --disable-zlib           disable zlib [autodetect]
 321
 322   The following libraries provide various hardware acceleration features:
 323   --disable-amf            disable AMF video encoding code [autodetect]
 324   --disable-audiotoolbox   disable Apple AudioToolbox code [autodetect]
 325   --enable-cuda-nvcc       enable Nvidia CUDA compiler [no]
 326   --disable-cuda-llvm      disable CUDA compilation using clang [autodetect]
 327   --disable-cuvid          disable Nvidia CUVID support [autodetect]
 328   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
 329   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
 330   --disable-ffnvcodec      disable dynamically linked Nvidia code [autodetect]
 331   --enable-libdrm          enable DRM code (Linux) [no]
 332   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
 333   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
 334   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
 335   --disable-nvdec          disable Nvidia video decoding acceleration (via hwaccel) [autodetect]
 336   --disable-nvenc          disable Nvidia video encoding code [autodetect]
 337   --enable-omx             enable OpenMAX IL code [no]
 338   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
 339   --enable-rkmpp           enable Rockchip Media Process Platform code [no]
 340   --disable-v4l2-m2m       disable V4L2 mem2mem code [autodetect]
 341   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
 342   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
 343   --disable-videotoolbox   disable VideoToolbox code [autodetect]
 344
 345 Toolchain options:
 346   --arch=ARCH              select architecture [$arch]
 347   --cpu=CPU                select the minimum required CPU (affects
 348                            instruction selection, may crash on older CPUs)
 349   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 350   --progs-suffix=SUFFIX    program name suffix []
 351   --enable-cross-compile   assume a cross-compiler is used
 352   --sysroot=PATH           root of cross-build tree
 353   --sysinclude=PATH        location of cross-build system headers
 354   --target-os=OS           compiler targets OS [$target_os]
 355   --target-exec=CMD        command to run executables on target
 356   --target-path=DIR        path to view of build directory on target
 357   --target-samples=DIR     path to samples directory on target
 358   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 359   --toolchain=NAME         set tool defaults according to NAME
 360                            (gcc-asan, clang-asan, gcc-msan, clang-msan,
 361                            gcc-tsan, clang-tsan, gcc-usan, clang-usan,
 362                            valgrind-massif, valgrind-memcheck,
 363                            msvc, icl, gcov, llvm-cov, hardened)
 364   --nm=NM                  use nm tool NM [$nm_default]
 365   --ar=AR                  use archive tool AR [$ar_default]
 366   --as=AS                  use assembler AS [$as_default]
 367   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
 368   --strip=STRIP            use strip tool STRIP [$strip_default]
 369   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 370   --x86asmexe=EXE          use nasm-compatible assembler EXE [$x86asmexe_default]
 371   --cc=CC                  use C compiler CC [$cc_default]
 372   --cxx=CXX                use C compiler CXX [$cxx_default]
 373   --objcc=OCC              use ObjC compiler OCC [$cc_default]
 374   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 375   --nvcc=NVCC              use Nvidia CUDA compiler NVCC or clang [$nvcc_default]
 376   --ld=LD                  use linker LD [$ld_default]
 377   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 378   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 379   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 380   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
 381   --host-cc=HOSTCC         use host C compiler HOSTCC
 382   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 383   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 384   --host-ld=HOSTLD         use host linker HOSTLD
 385   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 386   --host-extralibs=HLIBS   use libs HLIBS when linking for host
 387   --host-os=OS             compiler host OS [$target_os]
 388   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 389   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 390   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
 391   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 392   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 393   --extra-ldsoflags=ELDFLAGS add ELDFLAGS to LDSOFLAGS [$LDSOFLAGS]
 394   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 395   --extra-version=STRING   version string suffix []
 396   --optflags=OPTFLAGS      override optimization-related compiler flags
 397   --nvccflags=NVCCFLAGS    override nvcc flags [$nvccflags_default]
 398   --build-suffix=SUFFIX    library name suffix []
 399   --enable-pic             build position-independent code
 400   --enable-thumb           compile for Thumb instruction set
 401   --enable-lto             use link-time optimization
 402   --env="ENV=override"     override the environment variables
 403
 404 Advanced options (experts only):
 405   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 406   --custom-allocator=NAME  use a supported custom allocator
 407   --disable-symver         disable symbol versioning
 408   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 409   --disable-safe-bitstream-reader
 410                            disable buffer boundary checking in bitreaders
 411                            (faster, but may crash)
 412   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
 413
 414 Optimization options (experts only):
 415   --disable-asm            disable all assembly optimizations
 416   --disable-altivec        disable AltiVec optimizations
 417   --disable-vsx            disable VSX optimizations
 418   --disable-power8         disable POWER8 optimizations
 419   --disable-amd3dnow       disable 3DNow! optimizations
 420   --disable-amd3dnowext    disable 3DNow! extended optimizations
 421   --disable-mmx            disable MMX optimizations
 422   --disable-mmxext         disable MMXEXT optimizations
 423   --disable-sse            disable SSE optimizations
 424   --disable-sse2           disable SSE2 optimizations
 425   --disable-sse3           disable SSE3 optimizations
 426   --disable-ssse3          disable SSSE3 optimizations
 427   --disable-sse4           disable SSE4 optimizations
 428   --disable-sse42          disable SSE4.2 optimizations
 429   --disable-avx            disable AVX optimizations
 430   --disable-xop            disable XOP optimizations
 431   --disable-fma3           disable FMA3 optimizations
 432   --disable-fma4           disable FMA4 optimizations
 433   --disable-avx2           disable AVX2 optimizations
 434   --disable-avx512         disable AVX-512 optimizations
 435   --disable-aesni          disable AESNI optimizations
 436   --disable-armv5te        disable armv5te optimizations
 437   --disable-armv6          disable armv6 optimizations
 438   --disable-armv6t2        disable armv6t2 optimizations
 439   --disable-vfp            disable VFP optimizations
 440   --disable-neon           disable NEON optimizations
 441   --disable-inline-asm     disable use of inline assembly
 442   --disable-x86asm         disable use of standalone x86 assembly
 443   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
 444   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 445   --disable-msa            disable MSA optimizations
 446   --disable-msa2           disable MSA2 optimizations
 447   --disable-mipsfpu        disable floating point MIPS optimizations
 448   --disable-mmi            disable Loongson SIMD optimizations
 449   --disable-fast-unaligned consider unaligned accesses slow
 450
 451 Developer options (useful when working on FFmpeg itself):
 452   --disable-debug          disable debugging symbols
 453   --enable-debug=LEVEL     set the debug level [$debuglevel]
 454   --disable-optimizations  disable compiler optimizations
 455   --enable-extra-warnings  enable more compiler warnings
 456   --disable-stripping      disable stripping of executables and shared libraries
 457   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 458                            2 causes a slowdown at runtime.
 459   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 460   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 461                            leaks and errors, using the specified valgrind binary.
 462                            Cannot be combined with --target-exec
 463   --enable-ftrapv          Trap arithmetic overflows
 464   --samples=PATH           location of test samples for FATE, if not set use
 465                            \$FATE_SAMPLES at make invocation time.
 466   --enable-neon-clobber-test check NEON registers for clobbering (should be
 467                            used only for debugging purposes)
 468   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 469                            should be used only for debugging purposes)
 470   --enable-random          randomly enable/disable components
 471   --disable-random
 472   --enable-random=LIST     randomly enable/disable specific components or
 473   --disable-random=LIST    component groups. LIST is a comma-separated list
 474                            of NAME[:PROB] entries where NAME is a component
 475                            (group) and PROB the probability associated with
 476                            NAME (default 0.5).
 477   --random-seed=VALUE      seed value for --enable/disable-random
 478   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 479                            (only applies to --disable-optimizations builds)
 480   --enable-ossfuzz         Enable building fuzzer tool
 481   --libfuzzer=PATH         path to libfuzzer
 482   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
 483                            in the name) of tests whose result is ignored
 484   --enable-linux-perf      enable Linux Performance Monitor API
 485
 486 NOTE: Object files are built at the place where configure is launched.
 487 EOF
 488   exit 0
 489 }
 490
 491 if test -t 1 && which tput >/dev/null 2>&1; then
 492     ncolors=$(tput colors)
 493     if test -n "$ncolors" && test $ncolors -ge 8; then
 494         bold_color=$(tput bold)
 495         warn_color=$(tput setaf 3)
 496         error_color=$(tput setaf 1)
 497         reset_color=$(tput sgr0)
 498     fi
 499     # 72 used instead of 80 since that's the default of pr
 500     ncols=$(tput cols)
 501 fi
 502 : ${ncols:=72}
 503
 504 log(){
 505     echo "$@" >> $logfile
 506 }
 507
 508 log_file(){
 509     log BEGIN "$1"
 510     log_file_i=1
 511     while IFS= read -r log_file_line; do
 512         printf '%5d\t%s\n' "$log_file_i" "$log_file_line"
 513         log_file_i=$(($log_file_i+1))
 514     done < "$1" >> "$logfile"
 515     log END "$1"
 516 }
 517
 518 warn(){
 519     log "WARNING: $*"
 520     WARNINGS="${WARNINGS}WARNING: $*\n"
 521 }
 522
 523 die(){
 524     log "$@"
 525     echo "$error_color$bold_color$@$reset_color"
 526     cat <<EOF
 527
 528 If you think configure made a mistake, make sure you are using the latest
 529 version from Git.  If the latest version fails, report the problem to the
 530 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 531 EOF
 532     if disabled logging; then
 533         cat <<EOF
 534 Rerun configure with logging enabled (do not use --disable-logging), and
 535 include the log this produces with your report.
 536 EOF
 537     else
 538         cat <<EOF
 539 Include the log file "$logfile" produced by configure as this will help
 540 solve the problem.
 541 EOF
 542     fi
 543     exit 1
 544 }
 545
 546 # Avoid locale weirdness, besides we really just want to translate ASCII.
 547 toupper(){
 548     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 549 }
 550
 551 tolower(){
 552     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 553 }
 554
 555 c_escape(){
 556     echo "$*" | sed 's/["\\]/\\\0/g'
 557 }
 558
 559 sh_quote(){
 560     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 561     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 562     echo "$v"
 563 }
 564
 565 cleanws(){
 566     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
 567 }
 568
 569 filter(){
 570     pat=$1
 571     shift
 572     for v; do
 573         eval "case '$v' in $pat) printf '%s ' '$v' ;; esac"
 574     done
 575 }
 576
 577 filter_out(){
 578     pat=$1
 579     shift
 580     for v; do
 581         eval "case '$v' in $pat) ;; *) printf '%s ' '$v' ;; esac"
 582     done
 583 }
 584
 585 map(){
 586     m=$1
 587     shift
 588     for v; do eval $m; done
 589 }
 590
 591 add_suffix(){
 592     suffix=$1
 593     shift
 594     for v; do echo ${v}${suffix}; done
 595 }
 596
 597 remove_suffix(){
 598     suffix=$1
 599     shift
 600     for v; do echo ${v%$suffix}; done
 601 }
 602
 603 set_all(){
 604     value=$1
 605     shift
 606     for var in $*; do
 607         eval $var=$value
 608     done
 609 }
 610
 611 set_weak(){
 612     value=$1
 613     shift
 614     for var; do
 615         eval : \${$var:=$value}
 616     done
 617 }
 618
 619 sanitize_var_name(){
 620     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 621 }
 622
 623 set_sanitized(){
 624     var=$1
 625     shift
 626     eval $(sanitize_var_name "$var")='$*'
 627 }
 628
 629 get_sanitized(){
 630     eval echo \$$(sanitize_var_name "$1")
 631 }
 632
 633 pushvar(){
 634     for pvar in $*; do
 635         eval level=\${${pvar}_level:=0}
 636         eval ${pvar}_${level}="\$$pvar"
 637         eval ${pvar}_level=$(($level+1))
 638     done
 639 }
 640
 641 popvar(){
 642     for pvar in $*; do
 643         eval level=\${${pvar}_level:-0}
 644         test $level = 0 && continue
 645         eval level=$(($level-1))
 646         eval $pvar="\${${pvar}_${level}}"
 647         eval ${pvar}_level=$level
 648         eval unset ${pvar}_${level}
 649     done
 650 }
 651
 652 request(){
 653     for var in $*; do
 654         eval ${var}_requested=yes
 655         eval $var=
 656     done
 657 }
 658
 659 warn_if_gets_disabled(){
 660     for var in $*; do
 661         WARN_IF_GETS_DISABLED_LIST="$WARN_IF_GETS_DISABLED_LIST $var"
 662     done
 663 }
 664
 665 enable(){
 666     set_all yes $*
 667 }
 668
 669 disable(){
 670     set_all no $*
 671 }
 672
 673 disable_with_reason(){
 674     disable $1
 675     eval "${1}_disable_reason=\"$2\""
 676     if requested $1; then
 677         die "ERROR: $1 requested, but $2"
 678     fi
 679 }
 680
 681 enable_weak(){
 682     set_weak yes $*
 683 }
 684
 685 disable_weak(){
 686     set_weak no $*
 687 }
 688
 689 enable_sanitized(){
 690     for var; do
 691         enable $(sanitize_var_name $var)
 692     done
 693 }
 694
 695 disable_sanitized(){
 696     for var; do
 697         disable $(sanitize_var_name $var)
 698     done
 699 }
 700
 701 do_enable_deep(){
 702     for var; do
 703         enabled $var && continue
 704         set -- $var
 705         eval enable_deep \$${var}_select
 706         var=$1
 707         eval enable_deep_weak \$${var}_suggest
 708     done
 709 }
 710
 711 enable_deep(){
 712     do_enable_deep $*
 713     enable $*
 714 }
 715
 716 enable_deep_weak(){
 717     for var; do
 718         disabled $var && continue
 719         set -- $var
 720         do_enable_deep $var
 721         var=$1
 722         enable_weak $var
 723     done
 724 }
 725
 726 requested(){
 727     test "${1#!}" = "$1" && op="=" || op="!="
 728     eval test "x\$${1#!}_requested" $op "xyes"
 729 }
 730
 731 enabled(){
 732     test "${1#!}" = "$1" && op="=" || op="!="
 733     eval test "x\$${1#!}" $op "xyes"
 734 }
 735
 736 disabled(){
 737     test "${1#!}" = "$1" && op="=" || op="!="
 738     eval test "x\$${1#!}" $op "xno"
 739 }
 740
 741 enabled_all(){
 742     for opt; do
 743         enabled $opt || return 1
 744     done
 745 }
 746
 747 disabled_all(){
 748     for opt; do
 749         disabled $opt || return 1
 750     done
 751 }
 752
 753 enabled_any(){
 754     for opt; do
 755         enabled $opt && return 0
 756     done
 757 }
 758
 759 disabled_any(){
 760     for opt; do
 761         disabled $opt && return 0
 762     done
 763     return 1
 764 }
 765
 766 set_default(){
 767     for opt; do
 768         eval : \${$opt:=\$${opt}_default}
 769     done
 770 }
 771
 772 is_in(){
 773     value=$1
 774     shift
 775     for var in $*; do
 776         [ $var = $value ] && return 0
 777     done
 778     return 1
 779 }
 780
 781 # The cfg loop is very hot (several thousands iterations), and in bash also
 782 # potentialy quite slow. Try to abort the iterations early, preferably without
 783 # calling functions. 70%+ of the time cfg is already done or without deps.
 784 check_deps(){
 785     for cfg; do
 786         eval [ x\$${cfg}_checking = xdone ] && continue
 787         eval [ x\$${cfg}_checking = xinprogress ] && die "Circular dependency for $cfg."
 788
 789         eval "
 790         dep_all=\$${cfg}_deps
 791         dep_any=\$${cfg}_deps_any
 792         dep_con=\$${cfg}_conflict
 793         dep_sel=\$${cfg}_select
 794         dep_sgs=\$${cfg}_suggest
 795         dep_ifa=\$${cfg}_if
 796         dep_ifn=\$${cfg}_if_any
 797         "
 798
 799         # most of the time here $cfg has no deps - avoid costly no-op work
 800         if [ "$dep_all$dep_any$dep_con$dep_sel$dep_sgs$dep_ifa$dep_ifn" ]; then
 801             eval ${cfg}_checking=inprogress
 802
 803             set -- $cfg "$dep_all" "$dep_any" "$dep_con" "$dep_sel" "$dep_sgs" "$dep_ifa" "$dep_ifn"
 804             check_deps $dep_all $dep_any $dep_con $dep_sel $dep_sgs $dep_ifa $dep_ifn
 805             cfg=$1; dep_all=$2; dep_any=$3; dep_con=$4; dep_sel=$5 dep_sgs=$6; dep_ifa=$7; dep_ifn=$8
 806
 807             [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 808             [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 809             enabled_all  $dep_all || { disable_with_reason $cfg "not all dependencies are satisfied: $dep_all"; }
 810             enabled_any  $dep_any || { disable_with_reason $cfg "not any dependency is satisfied: $dep_any"; }
 811             disabled_all $dep_con || { disable_with_reason $cfg "some conflicting dependencies are unsatisfied: $dep_con"; }
 812             disabled_any $dep_sel && { disable_with_reason $cfg "some selected dependency is unsatisfied: $dep_sel"; }
 813
 814             enabled $cfg && enable_deep_weak $dep_sel $dep_sgs
 815
 816             for dep in $dep_all $dep_any $dep_sel $dep_sgs; do
 817                 # filter out library deps, these do not belong in extralibs
 818                 is_in $dep $LIBRARY_LIST && continue
 819                 enabled $dep && eval append ${cfg}_extralibs ${dep}_extralibs
 820             done
 821         fi
 822
 823         eval ${cfg}_checking=done
 824     done
 825 }
 826
 827 print_config(){
 828     pfx=$1
 829     files=$2
 830     shift 2
 831     map 'eval echo "$v \${$v:-no}"' "$@" |
 832     awk "BEGIN { split(\"$files\", files) }
 833         {
 834             c = \"$pfx\" toupper(\$1);
 835             v = \$2;
 836             sub(/yes/, 1, v);
 837             sub(/no/,  0, v);
 838             for (f in files) {
 839                 file = files[f];
 840                 if (file ~ /\\.h\$/) {
 841                     printf(\"#define %s %d\\n\", c, v) >>file;
 842                 } else if (file ~ /\\.asm\$/) {
 843                     printf(\"%%define %s %d\\n\", c, v) >>file;
 844                 } else if (file ~ /\\.mak\$/) {
 845                     n = -v ? \"\" : \"!\";
 846                     printf(\"%s%s=yes\\n\", n, c) >>file;
 847                 } else if (file ~ /\\.texi\$/) {
 848                     pre = -v ? \"\" : \"@c \";
 849                     yesno = \$2;
 850                     c2 = tolower(c);
 851                     gsub(/_/, \"-\", c2);
 852                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 853                 }
 854             }
 855         }"
 856 }
 857
 858 print_enabled(){
 859     suf=$1
 860     shift
 861     for v; do
 862         enabled $v && printf "%s\n" ${v%$suf}
 863     done
 864 }
 865
 866 append(){
 867     var=$1
 868     shift
 869     eval "$var=\"\$$var $*\""
 870 }
 871
 872 prepend(){
 873     var=$1
 874     shift
 875     eval "$var=\"$* \$$var\""
 876 }
 877
 878 reverse () {
 879     eval '
 880         reverse_out=
 881         for v in $'$1'; do
 882             reverse_out="$v $reverse_out"
 883         done
 884         '$1'=$reverse_out
 885     '
 886 }
 887
 888 # keeps the last occurence of each non-unique item
 889 unique(){
 890     unique_out=
 891     eval unique_in=\$$1
 892     reverse unique_in
 893     for v in $unique_in; do
 894         # " $unique_out" +space such that every item is surrounded with spaces
 895         case " $unique_out" in *" $v "*) continue; esac  # already in list
 896         unique_out="$unique_out$v "
 897     done
 898     reverse unique_out
 899     eval $1=\$unique_out
 900 }
 901
 902 resolve(){
 903     resolve_out=
 904     eval resolve_in=\$$1
 905     for v in $resolve_in; do
 906         eval 'resolve_out="$resolve_out$'$v' "'
 907     done
 908     eval $1=\$resolve_out
 909 }
 910
 911 add_cppflags(){
 912     append CPPFLAGS "$@"
 913 }
 914
 915 add_cflags(){
 916     append CFLAGS $($cflags_filter "$@")
 917 }
 918
 919 add_cflags_headers(){
 920     append CFLAGS_HEADERS $($cflags_filter "$@")
 921 }
 922
 923 add_cxxflags(){
 924     append CXXFLAGS $($cflags_filter "$@")
 925 }
 926
 927 add_objcflags(){
 928     append OBJCFLAGS $($objcflags_filter "$@")
 929 }
 930
 931 add_asflags(){
 932     append ASFLAGS $($asflags_filter "$@")
 933 }
 934
 935 add_ldflags(){
 936     append LDFLAGS $($ldflags_filter "$@")
 937 }
 938
 939 add_ldexeflags(){
 940     append LDEXEFLAGS $($ldflags_filter "$@")
 941 }
 942
 943 add_ldsoflags(){
 944     append LDSOFLAGS $($ldflags_filter "$@")
 945 }
 946
 947 add_extralibs(){
 948     prepend extralibs $($ldflags_filter "$@")
 949 }
 950
 951 add_stripflags(){
 952     append ASMSTRIPFLAGS "$@"
 953 }
 954
 955 add_host_cppflags(){
 956     append host_cppflags "$@"
 957 }
 958
 959 add_host_cflags(){
 960     append host_cflags $($host_cflags_filter "$@")
 961 }
 962
 963 add_host_ldflags(){
 964     append host_ldflags $($host_ldflags_filter "$@")
 965 }
 966
 967 add_compat(){
 968     append compat_objs $1
 969     shift
 970     map 'add_cppflags -D$v' "$@"
 971 }
 972
 973 test_cmd(){
 974     log "$@"
 975     "$@" >> $logfile 2>&1
 976 }
 977
 978 test_stat(){
 979     log test_stat "$@"
 980     stat "$1" >> $logfile 2>&1
 981 }
 982
 983 cc_e(){
 984     eval printf '%s\\n' $CC_E
 985 }
 986
 987 cc_o(){
 988     eval printf '%s\\n' $CC_O
 989 }
 990
 991 as_o(){
 992     eval printf '%s\\n' $AS_O
 993 }
 994
 995 x86asm_o(){
 996     eval printf '%s\\n' $X86ASM_O
 997 }
 998
 999 ld_o(){
1000     eval printf '%s\\n' $LD_O
1001 }
1002
1003 hostcc_e(){
1004     eval printf '%s\\n' $HOSTCC_E
1005 }
1006
1007 hostcc_o(){
1008     eval printf '%s\\n' $HOSTCC_O
1009 }
1010
1011 nvcc_o(){
1012     eval printf '%s\\n' $NVCC_O
1013 }
1014
1015 test_cc(){
1016     log test_cc "$@"
1017     cat > $TMPC
1018     log_file $TMPC
1019     test_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
1020 }
1021
1022 test_cxx(){
1023     log test_cxx "$@"
1024     cat > $TMPCPP
1025     log_file $TMPCPP
1026     test_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
1027 }
1028
1029 test_objcc(){
1030     log test_objcc "$@"
1031     cat > $TMPM
1032     log_file $TMPM
1033     test_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
1034 }
1035
1036 test_nvcc(){
1037     log test_nvcc "$@"
1038     cat > $TMPCU
1039     log_file $TMPCU
1040     tmpcu_=$TMPCU
1041     tmpo_=$TMPO
1042     [ -x "$(command -v cygpath)" ] && tmpcu_=$(cygpath -m $tmpcu_) && tmpo_=$(cygpath -m $tmpo_)
1043     test_cmd $nvcc $nvccflags "$@" $NVCC_C $(nvcc_o $tmpo_) $tmpcu_
1044 }
1045
1046 check_nvcc() {
1047     log check_nvcc "$@"
1048     name=$1
1049     shift 1
1050     disabled $name && return
1051     disable $name
1052     test_nvcc "$@" <<EOF && enable $name
1053 extern "C" {
1054     __global__ void hello(unsigned char *data) {}
1055 }
1056 EOF
1057 }
1058
1059 test_cpp(){
1060     log test_cpp "$@"
1061     cat > $TMPC
1062     log_file $TMPC
1063     test_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
1064 }
1065
1066 test_as(){
1067     log test_as "$@"
1068     cat > $TMPS
1069     log_file $TMPS
1070     test_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
1071 }
1072
1073 test_x86asm(){
1074     log test_x86asm "$@"
1075     echo "$1" > $TMPASM
1076     log_file $TMPASM
1077     shift
1078     test_cmd $x86asmexe $X86ASMFLAGS -Werror "$@" $(x86asm_o $TMPO) $TMPASM
1079 }
1080
1081 check_cmd(){
1082     log check_cmd "$@"
1083     cmd=$1
1084     disabled $cmd && return
1085     disable $cmd
1086     test_cmd $@ && enable $cmd
1087 }
1088
1089 check_as(){
1090     log check_as "$@"
1091     name=$1
1092     code=$2
1093     shift 2
1094     disable $name
1095     test_as $@ <<EOF && enable $name
1096 $code
1097 EOF
1098 }
1099
1100 check_inline_asm(){
1101     log check_inline_asm "$@"
1102     name="$1"
1103     code="$2"
1104     shift 2
1105     disable $name
1106     test_cc "$@" <<EOF && enable $name
1107 void foo(void){ __asm__ volatile($code); }
1108 EOF
1109 }
1110
1111 check_inline_asm_flags(){
1112     log check_inline_asm_flags "$@"
1113     name="$1"
1114     code="$2"
1115     flags=''
1116     shift 2
1117     while [ "$1" != "" ]; do
1118       append flags $1
1119       shift
1120     done;
1121     disable $name
1122     cat > $TMPC <<EOF
1123 void foo(void){ __asm__ volatile($code); }
1124 EOF
1125     log_file $TMPC
1126     test_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
1127     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
1128 }
1129
1130 check_insn(){
1131     log check_insn "$@"
1132     check_inline_asm ${1}_inline "\"$2\""
1133     check_as ${1}_external "$2"
1134 }
1135
1136 check_x86asm(){
1137     log check_x86asm "$@"
1138     name=$1
1139     shift
1140     disable $name
1141     test_x86asm "$@" && enable $name
1142 }
1143
1144 test_ld(){
1145     log test_ld "$@"
1146     type=$1
1147     shift 1
1148     flags=$(filter_out '-l*|*.so' $@)
1149     libs=$(filter '-l*|*.so' $@)
1150     test_$type $($cflags_filter $flags) || return
1151     flags=$($ldflags_filter $flags)
1152     libs=$($ldflags_filter $libs)
1153     test_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
1154 }
1155
1156 check_ld(){
1157     log check_ld "$@"
1158     type=$1
1159     name=$2
1160     shift 2
1161     disable $name
1162     test_ld $type $@ && enable $name
1163 }
1164
1165 print_include(){
1166     hdr=$1
1167     test "${hdr%.h}" = "${hdr}" &&
1168         echo "#include $hdr"    ||
1169         echo "#include <$hdr>"
1170 }
1171
1172 test_code(){
1173     log test_code "$@"
1174     check=$1
1175     headers=$2
1176     code=$3
1177     shift 3
1178     {
1179         for hdr in $headers; do
1180             print_include $hdr
1181         done
1182         echo "int main(void) { $code; return 0; }"
1183     } | test_$check "$@"
1184 }
1185
1186 check_cppflags(){
1187     log check_cppflags "$@"
1188     test_cpp "$@" <<EOF && append CPPFLAGS "$@"
1189 #include <stdlib.h>
1190 EOF
1191 }
1192
1193 test_cflags(){
1194     log test_cflags "$@"
1195     set -- $($cflags_filter "$@")
1196     test_cc "$@" <<EOF
1197 int x;
1198 EOF
1199 }
1200
1201 check_cflags(){
1202     log check_cflags "$@"
1203     test_cflags "$@" && add_cflags "$@"
1204 }
1205
1206 check_cxxflags(){
1207     log check_cxxflags "$@"
1208     set -- $($cflags_filter "$@")
1209     test_cxx "$@" <<EOF && append CXXFLAGS "$@"
1210 int x;
1211 EOF
1212 }
1213
1214 test_objcflags(){
1215     log test_objcflags "$@"
1216     set -- $($objcflags_filter "$@")
1217     test_objcc "$@" <<EOF
1218 int x;
1219 EOF
1220 }
1221
1222 check_objcflags(){
1223     log check_objcflags "$@"
1224     test_objcflags "$@" && add_objcflags "$@"
1225 }
1226
1227 test_ldflags(){
1228     log test_ldflags "$@"
1229     set -- $($ldflags_filter "$@")
1230     test_ld "cc" "$@" <<EOF
1231 int main(void){ return 0; }
1232 EOF
1233 }
1234
1235 check_ldflags(){
1236     log check_ldflags "$@"
1237     test_ldflags "$@" && add_ldflags "$@"
1238 }
1239
1240 test_stripflags(){
1241     log test_stripflags "$@"
1242     # call test_cc to get a fresh TMPO
1243     test_cc <<EOF
1244 int main(void) { return 0; }
1245 EOF
1246     test_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1247 }
1248
1249 check_stripflags(){
1250     log check_stripflags "$@"
1251     test_stripflags "$@" && add_stripflags "$@"
1252 }
1253
1254 check_headers(){
1255     log check_headers "$@"
1256     headers=$1
1257     shift
1258     disable_sanitized $headers
1259     {
1260         for hdr in $headers; do
1261             print_include $hdr
1262         done
1263         echo "int x;"
1264     } | test_cpp "$@" && enable_sanitized $headers
1265 }
1266
1267 check_header_objcc(){
1268     log check_header_objcc "$@"
1269     rm -f -- "$TMPO"
1270     header=$1
1271     shift
1272     disable_sanitized $header
1273     {
1274        echo "#include <$header>"
1275        echo "int main(void) { return 0; }"
1276     } | test_objcc && test_stat "$TMPO" && enable_sanitized $header
1277 }
1278
1279 check_apple_framework(){
1280     log check_apple_framework "$@"
1281     framework="$1"
1282     name="$(tolower $framework)"
1283     header="${framework}/${framework}.h"
1284     disable $name
1285     check_header_objcc $header &&
1286         enable $name && eval ${name}_extralibs='"-framework $framework"'
1287 }
1288
1289 check_func(){
1290     log check_func "$@"
1291     func=$1
1292     shift
1293     disable $func
1294     test_ld "cc" "$@" <<EOF && enable $func
1295 extern int $func();
1296 int main(void){ $func(); }
1297 EOF
1298 }
1299
1300 check_complexfunc(){
1301     log check_complexfunc "$@"
1302     func=$1
1303     narg=$2
1304     shift 2
1305     test $narg = 2 && args="f, g" || args="f * I"
1306     disable $func
1307     test_ld "cc" "$@" <<EOF && enable $func
1308 #include <complex.h>
1309 #include <math.h>
1310 float foo(complex float f, complex float g) { return $func($args); }
1311 int main(void){ return (int) foo; }
1312 EOF
1313 }
1314
1315 check_mathfunc(){
1316     log check_mathfunc "$@"
1317     func=$1
1318     narg=$2
1319     shift 2
1320     test $narg = 2 && args="f, g" || args="f"
1321     disable $func
1322     test_ld "cc" "$@" <<EOF && enable $func
1323 #include <math.h>
1324 float foo(float f, float g) { return $func($args); }
1325 int main(void){ return (int) foo; }
1326 EOF
1327 }
1328
1329 check_func_headers(){
1330     log check_func_headers "$@"
1331     headers=$1
1332     funcs=$2
1333     shift 2
1334     {
1335         for hdr in $headers; do
1336             print_include $hdr
1337         done
1338         echo "#include <stdint.h>"
1339         for func in $funcs; do
1340             echo "long check_$func(void) { return (long) $func; }"
1341         done
1342         echo "int main(void) { int ret = 0;"
1343         # LTO could optimize out the test functions without this
1344         for func in $funcs; do
1345             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1346         done
1347         echo "return ret; }"
1348     } | test_ld "cc" "$@" && enable $funcs && enable_sanitized $headers
1349 }
1350
1351 check_class_headers_cpp(){
1352     log check_class_headers_cpp "$@"
1353     headers=$1
1354     classes=$2
1355     shift 2
1356     {
1357         for hdr in $headers; do
1358             echo "#include <$hdr>"
1359         done
1360         echo "int main(void) { "
1361         i=1
1362         for class in $classes; do
1363             echo "$class obj$i;"
1364             i=$(expr $i + 1)
1365         done
1366         echo "return 0; }"
1367     } | test_ld "cxx" "$@" && enable $funcs && enable_sanitized $headers
1368 }
1369
1370 test_cpp_condition(){
1371     log test_cpp_condition "$@"
1372     header=$1
1373     condition=$2
1374     shift 2
1375     test_cpp "$@" <<EOF
1376 #include <$header>
1377 #if !($condition)
1378 #error "unsatisfied condition: $condition"
1379 #endif
1380 EOF
1381 }
1382
1383 check_cpp_condition(){
1384     log check_cpp_condition "$@"
1385     name=$1
1386     shift 1
1387     disable $name
1388     test_cpp_condition "$@" && enable $name
1389 }
1390
1391 test_cflags_cc(){
1392     log test_cflags_cc "$@"
1393     flags=$1
1394     header=$2
1395     condition=$3
1396     shift 3
1397     set -- $($cflags_filter "$flags")
1398     test_cc "$@" <<EOF
1399 #include <$header>
1400 #if !($condition)
1401 #error "unsatisfied condition: $condition"
1402 #endif
1403 EOF
1404 }
1405
1406 check_lib(){
1407     log check_lib "$@"
1408     name="$1"
1409     headers="$2"
1410     funcs="$3"
1411     shift 3
1412     disable $name
1413     check_func_headers "$headers" "$funcs" "$@" &&
1414         enable $name && eval ${name}_extralibs="\$@"
1415 }
1416
1417 check_lib_cpp(){
1418     log check_lib_cpp "$@"
1419     name="$1"
1420     headers="$2"
1421     classes="$3"
1422     shift 3
1423     disable $name
1424     check_class_headers_cpp "$headers" "$classes" "$@" &&
1425         enable $name && eval ${name}_extralibs="\$@"
1426 }
1427
1428 test_pkg_config(){
1429     log test_pkg_config "$@"
1430     name="$1"
1431     pkg_version="$2"
1432     pkg="${2%% *}"
1433     headers="$3"
1434     funcs="$4"
1435     shift 4
1436     disable $name
1437     test_cmd $pkg_config --exists --print-errors $pkg_version || return
1438     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1439     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1440     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1441         enable $name &&
1442         set_sanitized "${name}_cflags"    $pkg_cflags &&
1443         set_sanitized "${name}_extralibs" $pkg_libs
1444 }
1445
1446 check_pkg_config(){
1447     log check_pkg_config "$@"
1448     name="$1"
1449     test_pkg_config "$@" &&
1450         eval add_cflags \$${name}_cflags
1451 }
1452
1453 test_exec(){
1454     test_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1455 }
1456
1457 check_exec_crash(){
1458     log check_exec_crash "$@"
1459     code=$(cat)
1460
1461     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1462     # are safe but may not be available everywhere.  Thus we use
1463     # raise(SIGTERM) instead.  The check is run in a subshell so we
1464     # can redirect the "Terminated" message from the shell.  SIGBUS
1465     # is not defined by standard C so it is used conditionally.
1466
1467     (test_exec "$@") >> $logfile 2>&1 <<EOF
1468 #include <signal.h>
1469 static void sighandler(int sig){
1470     raise(SIGTERM);
1471 }
1472 int foo(void){
1473     $code
1474 }
1475 int (*func_ptr)(void) = foo;
1476 int main(void){
1477     signal(SIGILL, sighandler);
1478     signal(SIGFPE, sighandler);
1479     signal(SIGSEGV, sighandler);
1480 #ifdef SIGBUS
1481     signal(SIGBUS, sighandler);
1482 #endif
1483     return func_ptr();
1484 }
1485 EOF
1486 }
1487
1488 check_type(){
1489     log check_type "$@"
1490     headers=$1
1491     type=$2
1492     shift 2
1493     disable_sanitized "$type"
1494     test_code cc "$headers" "$type v" "$@" && enable_sanitized "$type"
1495 }
1496
1497 check_struct(){
1498     log check_struct "$@"
1499     headers=$1
1500     struct=$2
1501     member=$3
1502     shift 3
1503     disable_sanitized "${struct}_${member}"
1504     test_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1505         enable_sanitized "${struct}_${member}"
1506 }
1507
1508 check_builtin(){
1509     log check_builtin "$@"
1510     name=$1
1511     headers=$2
1512     builtin=$3
1513     shift 3
1514     disable "$name"
1515     test_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1516 }
1517
1518 check_compile_assert(){
1519     log check_compile_assert "$@"
1520     name=$1
1521     headers=$2
1522     condition=$3
1523     shift 3
1524     disable "$name"
1525     test_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1526 }
1527
1528 check_cc(){
1529     log check_cc "$@"
1530     name=$1
1531     shift
1532     disable "$name"
1533     test_code cc "$@" && enable "$name"
1534 }
1535
1536 require(){
1537     log require "$@"
1538     name_version="$1"
1539     name="${1%% *}"
1540     shift
1541     check_lib $name "$@" || die "ERROR: $name_version not found"
1542 }
1543
1544 require_cc(){
1545     log require_cc "$@"
1546     name="$1"
1547     check_cc "$@" || die "ERROR: $name failed"
1548 }
1549
1550 require_cpp(){
1551     name="$1"
1552     headers="$2"
1553     classes="$3"
1554     shift 3
1555     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1556 }
1557
1558 require_headers(){
1559     log require_headers "$@"
1560     headers="$1"
1561     check_headers "$@" || die "ERROR: $headers not found"
1562 }
1563
1564 require_cpp_condition(){
1565     log require_cpp_condition "$@"
1566     condition="$3"
1567     check_cpp_condition "$@" || die "ERROR: $condition not satisfied"
1568 }
1569
1570 require_pkg_config(){
1571     log require_pkg_config "$@"
1572     pkg_version="$2"
1573     check_pkg_config "$@" || die "ERROR: $pkg_version not found using pkg-config$pkg_config_fail_message"
1574 }
1575
1576 test_host_cc(){
1577     log test_host_cc "$@"
1578     cat > $TMPC
1579     log_file $TMPC
1580     test_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1581 }
1582
1583 test_host_cpp(){
1584     log test_host_cpp "$@"
1585     cat > $TMPC
1586     log_file $TMPC
1587     test_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1588 }
1589
1590 check_host_cppflags(){
1591     log check_host_cppflags "$@"
1592     test_host_cpp "$@" <<EOF && append host_cppflags "$@"
1593 #include <stdlib.h>
1594 EOF
1595 }
1596
1597 check_host_cflags(){
1598     log check_host_cflags "$@"
1599     set -- $($host_cflags_filter "$@")
1600     test_host_cc "$@" <<EOF && append host_cflags "$@"
1601 int x;
1602 EOF
1603 }
1604
1605 test_host_cpp_condition(){
1606     log test_host_cpp_condition "$@"
1607     header=$1
1608     condition=$2
1609     shift 2
1610     test_host_cpp "$@" <<EOF
1611 #include <$header>
1612 #if !($condition)
1613 #error "unsatisfied condition: $condition"
1614 #endif
1615 EOF
1616 }
1617
1618 check_host_cpp_condition(){
1619     log check_host_cpp_condition "$@"
1620     name=$1
1621     shift 1
1622     disable $name
1623     test_host_cpp_condition "$@" && enable $name
1624 }
1625
1626 cp_if_changed(){
1627     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1628     mkdir -p "$(dirname $2)"
1629     cp -f "$1" "$2"
1630 }
1631
1632 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1633 # system-dependent things.
1634
1635 AVCODEC_COMPONENTS="
1636     bsfs
1637     decoders
1638     encoders
1639     hwaccels
1640     parsers
1641 "
1642
1643 AVDEVICE_COMPONENTS="
1644     indevs
1645     outdevs
1646 "
1647
1648 AVFILTER_COMPONENTS="
1649     filters
1650 "
1651
1652 AVFORMAT_COMPONENTS="
1653     demuxers
1654     muxers
1655     protocols
1656 "
1657
1658 COMPONENT_LIST="
1659     $AVCODEC_COMPONENTS
1660     $AVDEVICE_COMPONENTS
1661     $AVFILTER_COMPONENTS
1662     $AVFORMAT_COMPONENTS
1663 "
1664
1665 EXAMPLE_LIST="
1666     avio_dir_cmd_example
1667     avio_reading_example
1668     decode_audio_example
1669     decode_video_example
1670     demuxing_decoding_example
1671     encode_audio_example
1672     encode_video_example
1673     extract_mvs_example
1674     filter_audio_example
1675     filtering_audio_example
1676     filtering_video_example
1677     http_multiclient_example
1678     hw_decode_example
1679     metadata_example
1680     muxing_example
1681     qsvdec_example
1682     remuxing_example
1683     resampling_audio_example
1684     scaling_video_example
1685     transcode_aac_example
1686     transcoding_example
1687     vaapi_encode_example
1688     vaapi_transcode_example
1689 "
1690
1691 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1692     alsa
1693     appkit
1694     avfoundation
1695     bzlib
1696     coreimage
1697     iconv
1698     libxcb
1699     libxcb_shm
1700     libxcb_shape
1701     libxcb_xfixes
1702     lzma
1703     schannel
1704     sdl2
1705     securetransport
1706     sndio
1707     xlib
1708     zlib
1709 "
1710
1711 EXTERNAL_LIBRARY_GPL_LIST="
1712     avisynth
1713     frei0r
1714     libcdio
1715     libdavs2
1716     librubberband
1717     libvidstab
1718     libx264
1719     libx265
1720     libxavs
1721     libxavs2
1722     libxvid
1723 "
1724
1725 EXTERNAL_LIBRARY_NONFREE_LIST="
1726     decklink
1727     libfdk_aac
1728     openssl
1729     libtls
1730 "
1731
1732 EXTERNAL_LIBRARY_VERSION3_LIST="
1733     gmp
1734     libaribb24
1735     liblensfun
1736     libopencore_amrnb
1737     libopencore_amrwb
1738     libvmaf
1739     libvo_amrwbenc
1740     mbedtls
1741     rkmpp
1742 "
1743
1744 EXTERNAL_LIBRARY_GPLV3_LIST="
1745     libsmbclient
1746 "
1747
1748 EXTERNAL_LIBRARY_LIST="
1749     $EXTERNAL_LIBRARY_GPL_LIST
1750     $EXTERNAL_LIBRARY_NONFREE_LIST
1751     $EXTERNAL_LIBRARY_VERSION3_LIST
1752     $EXTERNAL_LIBRARY_GPLV3_LIST
1753     chromaprint
1754     gcrypt
1755     gnutls
1756     jni
1757     ladspa
1758     libaom
1759     libass
1760     libbluray
1761     libbs2b
1762     libcaca
1763     libcelt
1764     libcodec2
1765     libdav1d
1766     libdc1394
1767     libdrm
1768     libflite
1769     libfontconfig
1770     libfreetype
1771     libfribidi
1772     libgme
1773     libgsm
1774     libiec61883
1775     libilbc
1776     libjack
1777     libklvanc
1778     libkvazaar
1779     libmodplug
1780     libmp3lame
1781     libmysofa
1782     libopencv
1783     libopenh264
1784     libopenjpeg
1785     libopenmpt
1786     libopus
1787     libpulse
1788     librav1e
1789     librsvg
1790     librtmp
1791     libshine
1792     libsmbclient
1793     libsnappy
1794     libsoxr
1795     libspeex
1796     libsrt
1797     libssh
1798     libtensorflow
1799     libtesseract
1800     libtheora
1801     libtwolame
1802     libv4l2
1803     libvorbis
1804     libvpx
1805     libwavpack
1806     libwebp
1807     libxml2
1808     libzimg
1809     libzmq
1810     libzvbi
1811     lv2
1812     mediacodec
1813     openal
1814     opengl
1815     pocketsphinx
1816     vapoursynth
1817 "
1818
1819 HWACCEL_AUTODETECT_LIBRARY_LIST="
1820     amf
1821     audiotoolbox
1822     crystalhd
1823     cuda
1824     cuda_llvm
1825     cuvid
1826     d3d11va
1827     dxva2
1828     ffnvcodec
1829     nvdec
1830     nvenc
1831     vaapi
1832     vdpau
1833     videotoolbox
1834     v4l2_m2m
1835     xvmc
1836 "
1837
1838 # catchall list of things that require external libs to link
1839 EXTRALIBS_LIST="
1840     cpu_init
1841     cws2fws
1842 "
1843
1844 HWACCEL_LIBRARY_NONFREE_LIST="
1845     cuda_nvcc
1846     cuda_sdk
1847     libnpp
1848 "
1849
1850 HWACCEL_LIBRARY_LIST="
1851     $HWACCEL_LIBRARY_NONFREE_LIST
1852     libmfx
1853     mmal
1854     omx
1855     opencl
1856 "
1857
1858 DOCUMENT_LIST="
1859     doc
1860     htmlpages
1861     manpages
1862     podpages
1863     txtpages
1864 "
1865
1866 FEATURE_LIST="
1867     ftrapv
1868     gray
1869     hardcoded_tables
1870     omx_rpi
1871     runtime_cpudetect
1872     safe_bitstream_reader
1873     shared
1874     small
1875     static
1876     swscale_alpha
1877 "
1878
1879 # this list should be kept in linking order
1880 LIBRARY_LIST="
1881     avdevice
1882     avfilter
1883     swscale
1884     postproc
1885     avformat
1886     avcodec
1887     swresample
1888     avresample
1889     avutil
1890 "
1891
1892 LICENSE_LIST="
1893     gpl
1894     nonfree
1895     version3
1896 "
1897
1898 PROGRAM_LIST="
1899     ffplay
1900     ffprobe
1901     ffmpeg
1902 "
1903
1904 SUBSYSTEM_LIST="
1905     dct
1906     dwt
1907     error_resilience
1908     faan
1909     fast_unaligned
1910     fft
1911     lsp
1912     lzo
1913     mdct
1914     pixelutils
1915     network
1916     rdft
1917 "
1918
1919 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1920 CONFIG_LIST="
1921     $DOCUMENT_LIST
1922     $EXAMPLE_LIST
1923     $EXTERNAL_LIBRARY_LIST
1924     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1925     $HWACCEL_LIBRARY_LIST
1926     $HWACCEL_AUTODETECT_LIBRARY_LIST
1927     $FEATURE_LIST
1928     $LICENSE_LIST
1929     $LIBRARY_LIST
1930     $PROGRAM_LIST
1931     $SUBSYSTEM_LIST
1932     autodetect
1933     fontconfig
1934     linux_perf
1935     memory_poisoning
1936     neon_clobber_test
1937     ossfuzz
1938     pic
1939     thumb
1940     valgrind_backtrace
1941     xmm_clobber_test
1942     $COMPONENT_LIST
1943 "
1944
1945 THREADS_LIST="
1946     pthreads
1947     os2threads
1948     w32threads
1949 "
1950
1951 ATOMICS_LIST="
1952     atomics_gcc
1953     atomics_suncc
1954     atomics_win32
1955 "
1956
1957 AUTODETECT_LIBS="
1958     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1959     $HWACCEL_AUTODETECT_LIBRARY_LIST
1960     $THREADS_LIST
1961 "
1962
1963 ARCH_LIST="
1964     aarch64
1965     alpha
1966     arm
1967     avr32
1968     avr32_ap
1969     avr32_uc
1970     bfin
1971     ia64
1972     m68k
1973     mips
1974     mips64
1975     parisc
1976     ppc
1977     ppc64
1978     s390
1979     sh4
1980     sparc
1981     sparc64
1982     tilegx
1983     tilepro
1984     tomi
1985     x86
1986     x86_32
1987     x86_64
1988 "
1989
1990 ARCH_EXT_LIST_ARM="
1991     armv5te
1992     armv6
1993     armv6t2
1994     armv8
1995     neon
1996     vfp
1997     vfpv3
1998     setend
1999 "
2000
2001 ARCH_EXT_LIST_MIPS="
2002     mipsfpu
2003     mips32r2
2004     mips32r5
2005     mips64r2
2006     mips32r6
2007     mips64r6
2008     mipsdsp
2009     mipsdspr2
2010     msa
2011     msa2
2012 "
2013
2014 ARCH_EXT_LIST_LOONGSON="
2015     loongson2
2016     loongson3
2017     mmi
2018 "
2019
2020 ARCH_EXT_LIST_X86_SIMD="
2021     aesni
2022     amd3dnow
2023     amd3dnowext
2024     avx
2025     avx2
2026     avx512
2027     fma3
2028     fma4
2029     mmx
2030     mmxext
2031     sse
2032     sse2
2033     sse3
2034     sse4
2035     sse42
2036     ssse3
2037     xop
2038 "
2039
2040 ARCH_EXT_LIST_PPC="
2041     altivec
2042     dcbzl
2043     ldbrx
2044     power8
2045     ppc4xx
2046     vsx
2047 "
2048
2049 ARCH_EXT_LIST_X86="
2050     $ARCH_EXT_LIST_X86_SIMD
2051     cpunop
2052     i686
2053 "
2054
2055 ARCH_EXT_LIST="
2056     $ARCH_EXT_LIST_ARM
2057     $ARCH_EXT_LIST_PPC
2058     $ARCH_EXT_LIST_X86
2059     $ARCH_EXT_LIST_MIPS
2060     $ARCH_EXT_LIST_LOONGSON
2061 "
2062
2063 ARCH_FEATURES="
2064     aligned_stack
2065     fast_64bit
2066     fast_clz
2067     fast_cmov
2068     local_aligned
2069     simd_align_16
2070     simd_align_32
2071     simd_align_64
2072 "
2073
2074 BUILTIN_LIST="
2075     atomic_cas_ptr
2076     machine_rw_barrier
2077     MemoryBarrier
2078     mm_empty
2079     rdtsc
2080     sem_timedwait
2081     sync_val_compare_and_swap
2082 "
2083 HAVE_LIST_CMDLINE="
2084     inline_asm
2085     symver
2086     x86asm
2087 "
2088
2089 HAVE_LIST_PUB="
2090     bigendian
2091     fast_unaligned
2092 "
2093
2094 HEADERS_LIST="
2095     arpa_inet_h
2096     asm_types_h
2097     cdio_paranoia_h
2098     cdio_paranoia_paranoia_h
2099     cuda_h
2100     dispatch_dispatch_h
2101     dev_bktr_ioctl_bt848_h
2102     dev_bktr_ioctl_meteor_h
2103     dev_ic_bt8xx_h
2104     dev_video_bktr_ioctl_bt848_h
2105     dev_video_meteor_ioctl_meteor_h
2106     direct_h
2107     dirent_h
2108     dxgidebug_h
2109     dxva_h
2110     ES2_gl_h
2111     gsm_h
2112     io_h
2113     linux_perf_event_h
2114     machine_ioctl_bt848_h
2115     machine_ioctl_meteor_h
2116     malloc_h
2117     opencv2_core_core_c_h
2118     OpenGL_gl3_h
2119     poll_h
2120     sys_param_h
2121     sys_resource_h
2122     sys_select_h
2123     sys_soundcard_h
2124     sys_time_h
2125     sys_un_h
2126     sys_videoio_h
2127     termios_h
2128     udplite_h
2129     unistd_h
2130     valgrind_valgrind_h
2131     windows_h
2132     winsock2_h
2133 "
2134
2135 INTRINSICS_LIST="
2136     intrinsics_neon
2137 "
2138
2139 COMPLEX_FUNCS="
2140     cabs
2141     cexp
2142 "
2143
2144 MATH_FUNCS="
2145     atanf
2146     atan2f
2147     cbrt
2148     cbrtf
2149     copysign
2150     cosf
2151     erf
2152     exp2
2153     exp2f
2154     expf
2155     hypot
2156     isfinite
2157     isinf
2158     isnan
2159     ldexpf
2160     llrint
2161     llrintf
2162     log2
2163     log2f
2164     log10f
2165     lrint
2166     lrintf
2167     powf
2168     rint
2169     round
2170     roundf
2171     sinf
2172     trunc
2173     truncf
2174 "
2175
2176 SYSTEM_FEATURES="
2177     dos_paths
2178     libc_msvcrt
2179     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2180     section_data_rel_ro
2181     threads
2182     uwp
2183     winrt
2184 "
2185
2186 SYSTEM_FUNCS="
2187     access
2188     aligned_malloc
2189     arc4random
2190     clock_gettime
2191     closesocket
2192     CommandLineToArgvW
2193     fcntl
2194     getaddrinfo
2195     gethrtime
2196     getopt
2197     GetProcessAffinityMask
2198     GetProcessMemoryInfo
2199     GetProcessTimes
2200     getrusage
2201     GetSystemTimeAsFileTime
2202     gettimeofday
2203     glob
2204     glXGetProcAddress
2205     gmtime_r
2206     inet_aton
2207     isatty
2208     kbhit
2209     localtime_r
2210     lstat
2211     lzo1x_999_compress
2212     mach_absolute_time
2213     MapViewOfFile
2214     memalign
2215     mkstemp
2216     mmap
2217     mprotect
2218     nanosleep
2219     PeekNamedPipe
2220     posix_memalign
2221     pthread_cancel
2222     sched_getaffinity
2223     SecItemImport
2224     SetConsoleTextAttribute
2225     SetConsoleCtrlHandler
2226     setmode
2227     setrlimit
2228     Sleep
2229     strerror_r
2230     sysconf
2231     sysctl
2232     usleep
2233     UTGetOSTypeFromString
2234     VirtualAlloc
2235     wglGetProcAddress
2236 "
2237
2238 SYSTEM_LIBRARIES="
2239     bcrypt
2240     vaapi_drm
2241     vaapi_x11
2242     vdpau_x11
2243 "
2244
2245 TOOLCHAIN_FEATURES="
2246     as_arch_directive
2247     as_dn_directive
2248     as_fpu_directive
2249     as_func
2250     as_object_arch
2251     asm_mod_q
2252     blocks_extension
2253     ebp_available
2254     ebx_available
2255     gnu_as
2256     gnu_windres
2257     ibm_asm
2258     inline_asm_direct_symbol_refs
2259     inline_asm_labels
2260     inline_asm_nonlocal_labels
2261     pragma_deprecated
2262     rsync_contimeout
2263     symver_asm_label
2264     symver_gnu_asm
2265     vfp_args
2266     xform_asm
2267     xmm_clobbers
2268 "
2269
2270 TYPES_LIST="
2271     kCMVideoCodecType_HEVC
2272     kCVPixelFormatType_420YpCbCr10BiPlanarVideoRange
2273     kCVImageBufferTransferFunction_SMPTE_ST_2084_PQ
2274     kCVImageBufferTransferFunction_ITU_R_2100_HLG
2275     kCVImageBufferTransferFunction_Linear
2276     socklen_t
2277     struct_addrinfo
2278     struct_group_source_req
2279     struct_ip_mreq_source
2280     struct_ipv6_mreq
2281     struct_msghdr_msg_flags
2282     struct_pollfd
2283     struct_rusage_ru_maxrss
2284     struct_sctp_event_subscribe
2285     struct_sockaddr_in6
2286     struct_sockaddr_sa_len
2287     struct_sockaddr_storage
2288     struct_stat_st_mtim_tv_nsec
2289     struct_v4l2_frmivalenum_discrete
2290 "
2291
2292 HAVE_LIST="
2293     $ARCH_EXT_LIST
2294     $(add_suffix _external $ARCH_EXT_LIST)
2295     $(add_suffix _inline   $ARCH_EXT_LIST)
2296     $ARCH_FEATURES
2297     $BUILTIN_LIST
2298     $COMPLEX_FUNCS
2299     $HAVE_LIST_CMDLINE
2300     $HAVE_LIST_PUB
2301     $HEADERS_LIST
2302     $INTRINSICS_LIST
2303     $MATH_FUNCS
2304     $SYSTEM_FEATURES
2305     $SYSTEM_FUNCS
2306     $SYSTEM_LIBRARIES
2307     $THREADS_LIST
2308     $TOOLCHAIN_FEATURES
2309     $TYPES_LIST
2310     makeinfo
2311     makeinfo_html
2312     opencl_d3d11
2313     opencl_drm_arm
2314     opencl_drm_beignet
2315     opencl_dxva2
2316     opencl_vaapi_beignet
2317     opencl_vaapi_intel_media
2318     perl
2319     pod2man
2320     texi2html
2321 "
2322
2323 # options emitted with CONFIG_ prefix but not available on the command line
2324 CONFIG_EXTRA="
2325     aandcttables
2326     ac3dsp
2327     adts_header
2328     audio_frame_queue
2329     audiodsp
2330     blockdsp
2331     bswapdsp
2332     cabac
2333     cbs
2334     cbs_av1
2335     cbs_h264
2336     cbs_h265
2337     cbs_jpeg
2338     cbs_mpeg2
2339     cbs_vp9
2340     dirac_parse
2341     dnn
2342     dvprofile
2343     exif
2344     faandct
2345     faanidct
2346     fdctdsp
2347     flacdsp
2348     fmtconvert
2349     frame_thread_encoder
2350     g722dsp
2351     golomb
2352     gplv3
2353     h263dsp
2354     h264chroma
2355     h264dsp
2356     h264parse
2357     h264pred
2358     h264qpel
2359     hevcparse
2360     hpeldsp
2361     huffman
2362     huffyuvdsp
2363     huffyuvencdsp
2364     idctdsp
2365     iirfilter
2366     mdct15
2367     intrax8
2368     iso_media
2369     ividsp
2370     jpegtables
2371     lgplv3
2372     libx262
2373     llauddsp
2374     llviddsp
2375     llvidencdsp
2376     lpc
2377     lzf
2378     me_cmp
2379     mpeg_er
2380     mpegaudio
2381     mpegaudiodsp
2382     mpegaudioheader
2383     mpegvideo
2384     mpegvideoenc
2385     mss34dsp
2386     pixblockdsp
2387     qpeldsp
2388     qsv
2389     qsvdec
2390     qsvenc
2391     qsvvpp
2392     rangecoder
2393     riffdec
2394     riffenc
2395     rtpdec
2396     rtpenc_chain
2397     rv34dsp
2398     scene_sad
2399     sinewin
2400     snappy
2401     srtp
2402     startcode
2403     texturedsp
2404     texturedspenc
2405     tpeldsp
2406     vaapi_1
2407     vaapi_encode
2408     vc1dsp
2409     videodsp
2410     vp3dsp
2411     vp56dsp
2412     vp8dsp
2413     wma_freqs
2414     wmv2dsp
2415 "
2416
2417 CMDLINE_SELECT="
2418     $ARCH_EXT_LIST
2419     $CONFIG_LIST
2420     $HAVE_LIST_CMDLINE
2421     $THREADS_LIST
2422     asm
2423     cross_compile
2424     debug
2425     extra_warnings
2426     logging
2427     lto
2428     optimizations
2429     rpath
2430     stripping
2431 "
2432
2433 PATHS_LIST="
2434     bindir
2435     datadir
2436     docdir
2437     incdir
2438     libdir
2439     mandir
2440     pkgconfigdir
2441     prefix
2442     shlibdir
2443     install_name_dir
2444 "
2445
2446 CMDLINE_SET="
2447     $PATHS_LIST
2448     ar
2449     arch
2450     as
2451     assert_level
2452     build_suffix
2453     cc
2454     objcc
2455     cpu
2456     cross_prefix
2457     custom_allocator
2458     cxx
2459     dep_cc
2460     doxygen
2461     env
2462     extra_version
2463     gas
2464     host_cc
2465     host_cflags
2466     host_extralibs
2467     host_ld
2468     host_ldflags
2469     host_os
2470     ignore_tests
2471     install
2472     ld
2473     ln_s
2474     logfile
2475     malloc_prefix
2476     nm
2477     optflags
2478     nvcc
2479     nvccflags
2480     pkg_config
2481     pkg_config_flags
2482     progs_suffix
2483     random_seed
2484     ranlib
2485     samples
2486     strip
2487     sws_max_filter_size
2488     sysinclude
2489     sysroot
2490     target_exec
2491     target_os
2492     target_path
2493     target_samples
2494     tempprefix
2495     toolchain
2496     valgrind
2497     windres
2498     x86asmexe
2499 "
2500
2501 CMDLINE_APPEND="
2502     extra_cflags
2503     extra_cxxflags
2504     extra_objcflags
2505     host_cppflags
2506 "
2507
2508 # code dependency declarations
2509
2510 # architecture extensions
2511
2512 armv5te_deps="arm"
2513 armv6_deps="arm"
2514 armv6t2_deps="arm"
2515 armv8_deps="aarch64"
2516 neon_deps_any="aarch64 arm"
2517 intrinsics_neon_deps="neon"
2518 vfp_deps_any="aarch64 arm"
2519 vfpv3_deps="vfp"
2520 setend_deps="arm"
2521
2522 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2523
2524 altivec_deps="ppc"
2525 dcbzl_deps="ppc"
2526 ldbrx_deps="ppc"
2527 ppc4xx_deps="ppc"
2528 vsx_deps="altivec"
2529 power8_deps="vsx"
2530
2531 loongson2_deps="mips"
2532 loongson3_deps="mips"
2533 mips32r2_deps="mips"
2534 mips32r5_deps="mips"
2535 mips32r6_deps="mips"
2536 mips64r2_deps="mips"
2537 mips64r6_deps="mips"
2538 mipsfpu_deps="mips"
2539 mipsdsp_deps="mips"
2540 mipsdspr2_deps="mips"
2541 mmi_deps="mips"
2542 msa_deps="mipsfpu"
2543 msa2_deps="msa"
2544
2545 cpunop_deps="i686"
2546 x86_64_select="i686"
2547 x86_64_suggest="fast_cmov"
2548
2549 amd3dnow_deps="mmx"
2550 amd3dnowext_deps="amd3dnow"
2551 i686_deps="x86"
2552 mmx_deps="x86"
2553 mmxext_deps="mmx"
2554 sse_deps="mmxext"
2555 sse2_deps="sse"
2556 sse3_deps="sse2"
2557 ssse3_deps="sse3"
2558 sse4_deps="ssse3"
2559 sse42_deps="sse4"
2560 aesni_deps="sse42"
2561 avx_deps="sse42"
2562 xop_deps="avx"
2563 fma3_deps="avx"
2564 fma4_deps="avx"
2565 avx2_deps="avx"
2566 avx512_deps="avx2"
2567
2568 mmx_external_deps="x86asm"
2569 mmx_inline_deps="inline_asm x86"
2570 mmx_suggest="mmx_external mmx_inline"
2571
2572 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2573     eval dep=\$${ext}_deps
2574     eval ${ext}_external_deps='"${dep}_external"'
2575     eval ${ext}_inline_deps='"${dep}_inline"'
2576     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2577 done
2578
2579 aligned_stack_if_any="aarch64 ppc x86"
2580 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2581 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2582 fast_unaligned_if_any="aarch64 ppc x86"
2583 simd_align_16_if_any="altivec neon sse"
2584 simd_align_32_if_any="avx"
2585 simd_align_64_if_any="avx512"
2586
2587 # system capabilities
2588 linux_perf_deps="linux_perf_event_h"
2589 symver_if_any="symver_asm_label symver_gnu_asm"
2590 valgrind_backtrace_conflict="optimizations"
2591 valgrind_backtrace_deps="valgrind_valgrind_h"
2592
2593 # threading support
2594 atomics_gcc_if="sync_val_compare_and_swap"
2595 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2596 atomics_win32_if="MemoryBarrier"
2597 atomics_native_if_any="$ATOMICS_LIST"
2598 w32threads_deps="atomics_native"
2599 threads_if_any="$THREADS_LIST"
2600
2601 # subsystems
2602 cbs_av1_select="cbs"
2603 cbs_h264_select="cbs"
2604 cbs_h265_select="cbs"
2605 cbs_jpeg_select="cbs"
2606 cbs_mpeg2_select="cbs"
2607 cbs_vp9_select="cbs"
2608 dct_select="rdft"
2609 dirac_parse_select="golomb"
2610 dnn_suggest="libtensorflow"
2611 error_resilience_select="me_cmp"
2612 faandct_deps="faan"
2613 faandct_select="fdctdsp"
2614 faanidct_deps="faan"
2615 faanidct_select="idctdsp"
2616 h264dsp_select="startcode"
2617 hevcparse_select="golomb"
2618 frame_thread_encoder_deps="encoders threads"
2619 intrax8_select="blockdsp idctdsp"
2620 mdct_select="fft"
2621 mdct15_select="fft"
2622 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2623 mpeg_er_select="error_resilience"
2624 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2625 mpegaudiodsp_select="dct"
2626 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2627 mpegvideoenc_select="aandcttables me_cmp mpegvideo pixblockdsp qpeldsp"
2628 vc1dsp_select="h264chroma qpeldsp startcode"
2629 rdft_select="fft"
2630
2631 # decoders / encoders
2632 aac_decoder_select="adts_header mdct15 mdct sinewin"
2633 aac_fixed_decoder_select="adts_header mdct sinewin"
2634 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2635 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2636 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2637 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2638 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2639 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2640 acelp_kelvin_decoder_select="audiodsp"
2641 adpcm_g722_decoder_select="g722dsp"
2642 adpcm_g722_encoder_select="g722dsp"
2643 aic_decoder_select="golomb idctdsp"
2644 alac_encoder_select="lpc"
2645 als_decoder_select="bswapdsp"
2646 amrnb_decoder_select="lsp"
2647 amrwb_decoder_select="lsp"
2648 amv_decoder_select="sp5x_decoder exif"
2649 amv_encoder_select="jpegtables mpegvideoenc"
2650 ape_decoder_select="bswapdsp llauddsp"
2651 apng_decoder_deps="zlib"
2652 apng_encoder_deps="zlib"
2653 apng_encoder_select="llvidencdsp"
2654 aptx_decoder_select="audio_frame_queue"
2655 aptx_encoder_select="audio_frame_queue"
2656 aptx_hd_decoder_select="audio_frame_queue"
2657 aptx_hd_encoder_select="audio_frame_queue"
2658 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2659 asv1_encoder_select="aandcttables bswapdsp fdctdsp pixblockdsp"
2660 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2661 asv2_encoder_select="aandcttables bswapdsp fdctdsp pixblockdsp"
2662 atrac1_decoder_select="mdct sinewin"
2663 atrac3_decoder_select="mdct"
2664 atrac3al_decoder_select="mdct"
2665 atrac3p_decoder_select="mdct sinewin"
2666 atrac3pal_decoder_select="mdct sinewin"
2667 atrac9_decoder_select="mdct"
2668 avrn_decoder_select="exif jpegtables"
2669 bink_decoder_select="blockdsp hpeldsp"
2670 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2671 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2672 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2673 clearvideo_decoder_select="idctdsp"
2674 cllc_decoder_select="bswapdsp"
2675 comfortnoise_encoder_select="lpc"
2676 cook_decoder_select="audiodsp mdct sinewin"
2677 cscd_decoder_select="lzo"
2678 cscd_decoder_suggest="zlib"
2679 dca_decoder_select="mdct"
2680 dca_encoder_select="mdct"
2681 dds_decoder_select="texturedsp"
2682 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2683 dnxhd_decoder_select="blockdsp idctdsp"
2684 dnxhd_encoder_select="blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2685 dolby_e_decoder_select="mdct"
2686 dvvideo_decoder_select="dvprofile idctdsp"
2687 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2688 dxa_decoder_deps="zlib"
2689 dxv_decoder_select="lzf texturedsp"
2690 eac3_decoder_select="ac3_decoder"
2691 eac3_encoder_select="ac3_encoder"
2692 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2693 eatgq_decoder_select="aandcttables"
2694 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2695 exr_decoder_deps="zlib"
2696 ffv1_decoder_select="rangecoder"
2697 ffv1_encoder_select="rangecoder"
2698 ffvhuff_decoder_select="huffyuv_decoder"
2699 ffvhuff_encoder_select="huffyuv_encoder"
2700 fic_decoder_select="golomb"
2701 flac_decoder_select="flacdsp"
2702 flac_encoder_select="bswapdsp flacdsp lpc"
2703 flashsv2_decoder_deps="zlib"
2704 flashsv2_encoder_deps="zlib"
2705 flashsv_decoder_deps="zlib"
2706 flashsv_encoder_deps="zlib"
2707 flv_decoder_select="h263_decoder"
2708 flv_encoder_select="h263_encoder"
2709 fourxm_decoder_select="blockdsp bswapdsp"
2710 fraps_decoder_select="bswapdsp huffman"
2711 g2m_decoder_deps="zlib"
2712 g2m_decoder_select="blockdsp idctdsp jpegtables"
2713 g729_decoder_select="audiodsp"
2714 h261_decoder_select="mpegvideo"
2715 h261_encoder_select="mpegvideoenc"
2716 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2717 h263_encoder_select="h263dsp mpegvideoenc"
2718 h263i_decoder_select="h263_decoder"
2719 h263p_decoder_select="h263_decoder"
2720 h263p_encoder_select="h263_encoder"
2721 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2722 h264_decoder_suggest="error_resilience"
2723 hap_decoder_select="snappy texturedsp"
2724 hap_encoder_deps="libsnappy"
2725 hap_encoder_select="texturedspenc"
2726 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2727 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2728 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2729 hymt_decoder_select="huffyuv_decoder"
2730 iac_decoder_select="imc_decoder"
2731 imc_decoder_select="bswapdsp fft mdct sinewin"
2732 imm4_decoder_select="bswapdsp"
2733 imm5_decoder_select="h264_decoder hevc_decoder"
2734 indeo3_decoder_select="hpeldsp"
2735 indeo4_decoder_select="ividsp"
2736 indeo5_decoder_select="ividsp"
2737 interplay_video_decoder_select="hpeldsp"
2738 jpegls_decoder_select="mjpeg_decoder"
2739 jv_decoder_select="blockdsp"
2740 lagarith_decoder_select="llviddsp"
2741 ljpeg_encoder_select="idctdsp jpegtables mpegvideoenc"
2742 lscr_decoder_deps="zlib"
2743 magicyuv_decoder_select="llviddsp"
2744 magicyuv_encoder_select="llvidencdsp"
2745 mdec_decoder_select="blockdsp bswapdsp idctdsp mpegvideo"
2746 metasound_decoder_select="lsp mdct sinewin"
2747 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2748 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2749 mjpeg_encoder_select="jpegtables mpegvideoenc"
2750 mjpegb_decoder_select="mjpeg_decoder"
2751 mlp_decoder_select="mlp_parser"
2752 mlp_encoder_select="lpc audio_frame_queue"
2753 motionpixels_decoder_select="bswapdsp"
2754 mp1_decoder_select="mpegaudio"
2755 mp1float_decoder_select="mpegaudio"
2756 mp2_decoder_select="mpegaudio"
2757 mp2float_decoder_select="mpegaudio"
2758 mp3_decoder_select="mpegaudio"
2759 mp3adu_decoder_select="mpegaudio"
2760 mp3adufloat_decoder_select="mpegaudio"
2761 mp3float_decoder_select="mpegaudio"
2762 mp3on4_decoder_select="mpegaudio"
2763 mp3on4float_decoder_select="mpegaudio"
2764 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2765 mpc8_decoder_select="mpegaudiodsp"
2766 mpegvideo_decoder_select="mpegvideo"
2767 mpeg1video_decoder_select="mpegvideo"
2768 mpeg1video_encoder_select="mpegvideoenc h263dsp"
2769 mpeg2video_decoder_select="mpegvideo"
2770 mpeg2video_encoder_select="mpegvideoenc h263dsp"
2771 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2772 mpeg4_encoder_select="h263_encoder"
2773 msa1_decoder_select="mss34dsp"
2774 mscc_decoder_deps="zlib"
2775 msmpeg4v1_decoder_select="h263_decoder"
2776 msmpeg4v2_decoder_select="h263_decoder"
2777 msmpeg4v2_encoder_select="h263_encoder"
2778 msmpeg4v3_decoder_select="h263_decoder"
2779 msmpeg4v3_encoder_select="h263_encoder"
2780 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2781 mts2_decoder_select="mss34dsp"
2782 mwsc_decoder_deps="zlib"
2783 mxpeg_decoder_select="mjpeg_decoder"
2784 nellymoser_decoder_select="mdct sinewin"
2785 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2786 nuv_decoder_select="idctdsp lzo"
2787 on2avc_decoder_select="mdct"
2788 opus_decoder_deps="swresample"
2789 opus_decoder_select="mdct15"
2790 opus_encoder_select="audio_frame_queue mdct15"
2791 png_decoder_deps="zlib"
2792 png_encoder_deps="zlib"
2793 png_encoder_select="llvidencdsp"
2794 prores_decoder_select="blockdsp idctdsp"
2795 prores_encoder_select="fdctdsp"
2796 qcelp_decoder_select="lsp"
2797 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2798 ra_144_decoder_select="audiodsp"
2799 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2800 ralf_decoder_select="golomb"
2801 rasc_decoder_deps="zlib"
2802 rawvideo_decoder_select="bswapdsp"
2803 rscc_decoder_deps="zlib"
2804 rtjpeg_decoder_select="me_cmp"
2805 rv10_decoder_select="h263_decoder"
2806 rv10_encoder_select="h263_encoder"
2807 rv20_decoder_select="h263_decoder"
2808 rv20_encoder_select="h263_encoder"
2809 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2810 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2811 screenpresso_decoder_deps="zlib"
2812 shorten_decoder_select="bswapdsp"
2813 sipr_decoder_select="lsp"
2814 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2815 snow_encoder_select="dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2816 sonic_decoder_select="golomb rangecoder"
2817 sonic_encoder_select="golomb rangecoder"
2818 sonic_ls_encoder_select="golomb rangecoder"
2819 sp5x_decoder_select="mjpeg_decoder"
2820 speedhq_decoder_select="mpegvideo"
2821 srgc_decoder_deps="zlib"
2822 svq1_decoder_select="hpeldsp"
2823 svq1_encoder_select="hpeldsp me_cmp mpegvideoenc"
2824 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2825 svq3_decoder_suggest="zlib"
2826 tak_decoder_select="audiodsp"
2827 tdsc_decoder_deps="zlib"
2828 tdsc_decoder_select="mjpeg_decoder"
2829 theora_decoder_select="vp3_decoder"
2830 thp_decoder_select="mjpeg_decoder"
2831 tiff_decoder_select="mjpeg_decoder"
2832 tiff_decoder_suggest="zlib lzma"
2833 tiff_encoder_suggest="zlib"
2834 truehd_decoder_select="mlp_parser"
2835 truehd_encoder_select="lpc audio_frame_queue"
2836 truemotion2_decoder_select="bswapdsp"
2837 truespeech_decoder_select="bswapdsp"
2838 tscc_decoder_deps="zlib"
2839 twinvq_decoder_select="mdct lsp sinewin"
2840 txd_decoder_select="texturedsp"
2841 utvideo_decoder_select="bswapdsp llviddsp"
2842 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2843 vble_decoder_select="llviddsp"
2844 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2845 vc1image_decoder_select="vc1_decoder"
2846 vorbis_decoder_select="mdct"
2847 vorbis_encoder_select="audio_frame_queue mdct"
2848 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2849 vp4_decoder_select="vp3_decoder"
2850 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2851 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2852 vp6a_decoder_select="vp6_decoder"
2853 vp6f_decoder_select="vp6_decoder"
2854 vp7_decoder_select="h264pred videodsp vp8dsp"
2855 vp8_decoder_select="h264pred videodsp vp8dsp"
2856 vp9_decoder_select="videodsp vp9_parser vp9_superframe_split_bsf"
2857 wcmv_decoder_deps="zlib"
2858 webp_decoder_select="vp8_decoder exif"
2859 wmalossless_decoder_select="llauddsp"
2860 wmapro_decoder_select="mdct sinewin wma_freqs"
2861 wmav1_decoder_select="mdct sinewin wma_freqs"
2862 wmav1_encoder_select="mdct sinewin wma_freqs"
2863 wmav2_decoder_select="mdct sinewin wma_freqs"
2864 wmav2_encoder_select="mdct sinewin wma_freqs"
2865 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2866 wmv1_decoder_select="h263_decoder"
2867 wmv1_encoder_select="h263_encoder"
2868 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2869 wmv2_encoder_select="h263_encoder wmv2dsp"
2870 wmv3_decoder_select="vc1_decoder"
2871 wmv3image_decoder_select="wmv3_decoder"
2872 xma1_decoder_select="wmapro_decoder"
2873 xma2_decoder_select="wmapro_decoder"
2874 ylc_decoder_select="bswapdsp"
2875 zerocodec_decoder_deps="zlib"
2876 zlib_decoder_deps="zlib"
2877 zlib_encoder_deps="zlib"
2878 zmbv_decoder_deps="zlib"
2879 zmbv_encoder_deps="zlib"
2880
2881 # hardware accelerators
2882 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2883 cuda_deps="ffnvcodec"
2884 cuvid_deps="ffnvcodec"
2885 d3d11va_deps="dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2886 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32 user32"
2887 ffnvcodec_deps_any="libdl LoadLibrary"
2888 nvdec_deps="ffnvcodec"
2889 vaapi_x11_deps="xlib"
2890 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2891 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2892 xvmc_deps="X11_extensions_XvMClib_h"
2893
2894 h263_vaapi_hwaccel_deps="vaapi"
2895 h263_vaapi_hwaccel_select="h263_decoder"
2896 h263_videotoolbox_hwaccel_deps="videotoolbox"
2897 h263_videotoolbox_hwaccel_select="h263_decoder"
2898 h264_d3d11va_hwaccel_deps="d3d11va"
2899 h264_d3d11va_hwaccel_select="h264_decoder"
2900 h264_d3d11va2_hwaccel_deps="d3d11va"
2901 h264_d3d11va2_hwaccel_select="h264_decoder"
2902 h264_dxva2_hwaccel_deps="dxva2"
2903 h264_dxva2_hwaccel_select="h264_decoder"
2904 h264_nvdec_hwaccel_deps="nvdec"
2905 h264_nvdec_hwaccel_select="h264_decoder"
2906 h264_vaapi_hwaccel_deps="vaapi"
2907 h264_vaapi_hwaccel_select="h264_decoder"
2908 h264_vdpau_hwaccel_deps="vdpau"
2909 h264_vdpau_hwaccel_select="h264_decoder"
2910 h264_videotoolbox_hwaccel_deps="videotoolbox"
2911 h264_videotoolbox_hwaccel_select="h264_decoder"
2912 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2913 hevc_d3d11va_hwaccel_select="hevc_decoder"
2914 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2915 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2916 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2917 hevc_dxva2_hwaccel_select="hevc_decoder"
2918 hevc_nvdec_hwaccel_deps="nvdec"
2919 hevc_nvdec_hwaccel_select="hevc_decoder"
2920 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2921 hevc_vaapi_hwaccel_select="hevc_decoder"
2922 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2923 hevc_vdpau_hwaccel_select="hevc_decoder"
2924 hevc_videotoolbox_hwaccel_deps="videotoolbox"
2925 hevc_videotoolbox_hwaccel_select="hevc_decoder"
2926 mjpeg_nvdec_hwaccel_deps="nvdec"
2927 mjpeg_nvdec_hwaccel_select="mjpeg_decoder"
2928 mjpeg_vaapi_hwaccel_deps="vaapi"
2929 mjpeg_vaapi_hwaccel_select="mjpeg_decoder"
2930 mpeg_xvmc_hwaccel_deps="xvmc"
2931 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2932 mpeg1_nvdec_hwaccel_deps="nvdec"
2933 mpeg1_nvdec_hwaccel_select="mpeg1video_decoder"
2934 mpeg1_vdpau_hwaccel_deps="vdpau"
2935 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2936 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2937 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2938 mpeg1_xvmc_hwaccel_deps="xvmc"
2939 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2940 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2941 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2942 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2943 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2944 mpeg2_dxva2_hwaccel_deps="dxva2"
2945 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2946 mpeg2_nvdec_hwaccel_deps="nvdec"
2947 mpeg2_nvdec_hwaccel_select="mpeg2video_decoder"
2948 mpeg2_vaapi_hwaccel_deps="vaapi"
2949 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2950 mpeg2_vdpau_hwaccel_deps="vdpau"
2951 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2952 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2953 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2954 mpeg2_xvmc_hwaccel_deps="xvmc"
2955 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2956 mpeg4_nvdec_hwaccel_deps="nvdec"
2957 mpeg4_nvdec_hwaccel_select="mpeg4_decoder"
2958 mpeg4_vaapi_hwaccel_deps="vaapi"
2959 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2960 mpeg4_vdpau_hwaccel_deps="vdpau"
2961 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2962 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2963 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2964 vc1_d3d11va_hwaccel_deps="d3d11va"
2965 vc1_d3d11va_hwaccel_select="vc1_decoder"
2966 vc1_d3d11va2_hwaccel_deps="d3d11va"
2967 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2968 vc1_dxva2_hwaccel_deps="dxva2"
2969 vc1_dxva2_hwaccel_select="vc1_decoder"
2970 vc1_nvdec_hwaccel_deps="nvdec"
2971 vc1_nvdec_hwaccel_select="vc1_decoder"
2972 vc1_vaapi_hwaccel_deps="vaapi"
2973 vc1_vaapi_hwaccel_select="vc1_decoder"
2974 vc1_vdpau_hwaccel_deps="vdpau"
2975 vc1_vdpau_hwaccel_select="vc1_decoder"
2976 vp8_nvdec_hwaccel_deps="nvdec"
2977 vp8_nvdec_hwaccel_select="vp8_decoder"
2978 vp8_vaapi_hwaccel_deps="vaapi"
2979 vp8_vaapi_hwaccel_select="vp8_decoder"
2980 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2981 vp9_d3d11va_hwaccel_select="vp9_decoder"
2982 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2983 vp9_d3d11va2_hwaccel_select="vp9_decoder"
2984 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2985 vp9_dxva2_hwaccel_select="vp9_decoder"
2986 vp9_nvdec_hwaccel_deps="nvdec"
2987 vp9_nvdec_hwaccel_select="vp9_decoder"
2988 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2989 vp9_vaapi_hwaccel_select="vp9_decoder"
2990 vp9_vdpau_hwaccel_deps="vdpau VdpPictureInfoVP9"
2991 vp9_vdpau_hwaccel_select="vp9_decoder"
2992 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2993 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2994 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2995 wmv3_nvdec_hwaccel_select="vc1_nvdec_hwaccel"
2996 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2997 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2998
2999 # hardware-accelerated codecs
3000 omx_deps="libdl pthreads"
3001 omx_rpi_select="omx"
3002 qsv_deps="libmfx"
3003 qsvdec_select="qsv"
3004 qsvenc_select="qsv"
3005 qsvvpp_select="qsv"
3006 vaapi_encode_deps="vaapi"
3007 v4l2_m2m_deps="linux_videodev2_h sem_timedwait"
3008
3009 hwupload_cuda_filter_deps="ffnvcodec"
3010 scale_npp_filter_deps="ffnvcodec libnpp"
3011 scale_cuda_filter_deps="ffnvcodec"
3012 scale_cuda_filter_deps_any="cuda_nvcc cuda_llvm"
3013 thumbnail_cuda_filter_deps="ffnvcodec"
3014 thumbnail_cuda_filter_deps_any="cuda_nvcc cuda_llvm"
3015 transpose_npp_filter_deps="ffnvcodec libnpp"
3016
3017 amf_deps_any="libdl LoadLibrary"
3018 nvenc_deps="ffnvcodec"
3019 nvenc_deps_any="libdl LoadLibrary"
3020 nvenc_encoder_deps="nvenc"
3021
3022 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
3023 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
3024 h264_amf_encoder_deps="amf"
3025 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
3026 h264_cuvid_decoder_deps="cuvid"
3027 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
3028 h264_mediacodec_decoder_deps="mediacodec"
3029 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
3030 h264_mmal_decoder_deps="mmal"
3031 h264_nvenc_encoder_deps="nvenc"
3032 h264_omx_encoder_deps="omx"
3033 h264_qsv_decoder_select="h264_mp4toannexb_bsf qsvdec"
3034 h264_qsv_encoder_select="qsvenc"
3035 h264_rkmpp_decoder_deps="rkmpp"
3036 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
3037 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
3038 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
3039 h264_v4l2m2m_decoder_select="h264_mp4toannexb_bsf"
3040 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
3041 hevc_amf_encoder_deps="amf"
3042 hevc_cuvid_decoder_deps="cuvid"
3043 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
3044 hevc_mediacodec_decoder_deps="mediacodec"
3045 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
3046 hevc_nvenc_encoder_deps="nvenc"
3047 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf qsvdec"
3048 hevc_qsv_encoder_select="hevcparse qsvenc"
3049 hevc_rkmpp_decoder_deps="rkmpp"
3050 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
3051 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
3052 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
3053 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
3054 hevc_v4l2m2m_decoder_select="hevc_mp4toannexb_bsf"
3055 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
3056 mjpeg_cuvid_decoder_deps="cuvid"
3057 mjpeg_qsv_decoder_select="qsvdec"
3058 mjpeg_qsv_encoder_deps="libmfx"
3059 mjpeg_qsv_encoder_select="qsvenc"
3060 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
3061 mjpeg_vaapi_encoder_select="cbs_jpeg jpegtables vaapi_encode"
3062 mpeg1_cuvid_decoder_deps="cuvid"
3063 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
3064 mpeg2_crystalhd_decoder_select="crystalhd"
3065 mpeg2_cuvid_decoder_deps="cuvid"
3066 mpeg2_mmal_decoder_deps="mmal"
3067 mpeg2_mediacodec_decoder_deps="mediacodec"
3068 mpeg2_qsv_decoder_select="qsvdec"
3069 mpeg2_qsv_encoder_select="qsvenc"
3070 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
3071 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
3072 mpeg4_crystalhd_decoder_select="crystalhd"
3073 mpeg4_cuvid_decoder_deps="cuvid"
3074 mpeg4_mediacodec_decoder_deps="mediacodec"
3075 mpeg4_mmal_decoder_deps="mmal"
3076 mpeg4_omx_encoder_deps="omx"
3077 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
3078 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
3079 msmpeg4_crystalhd_decoder_select="crystalhd"
3080 nvenc_h264_encoder_select="h264_nvenc_encoder"
3081 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
3082 vc1_crystalhd_decoder_select="crystalhd"
3083 vc1_cuvid_decoder_deps="cuvid"
3084 vc1_mmal_decoder_deps="mmal"
3085 vc1_qsv_decoder_select="qsvdec"
3086 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
3087 vp8_cuvid_decoder_deps="cuvid"
3088 vp8_mediacodec_decoder_deps="mediacodec"
3089 vp8_qsv_decoder_select="qsvdec"
3090 vp8_rkmpp_decoder_deps="rkmpp"
3091 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
3092 vp8_vaapi_encoder_select="vaapi_encode"
3093 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
3094 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
3095 vp9_cuvid_decoder_deps="cuvid"
3096 vp9_mediacodec_decoder_deps="mediacodec"
3097 vp9_qsv_decoder_select="qsvdec"
3098 vp9_rkmpp_decoder_deps="rkmpp"
3099 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
3100 vp9_vaapi_encoder_select="vaapi_encode"
3101 vp9_qsv_encoder_deps="libmfx MFX_CODEC_VP9"
3102 vp9_qsv_encoder_select="qsvenc"
3103 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
3104 wmv3_crystalhd_decoder_select="crystalhd"
3105
3106 # parsers
3107 aac_parser_select="adts_header"
3108 av1_parser_select="cbs_av1"
3109 h264_parser_select="golomb h264dsp h264parse"
3110 hevc_parser_select="hevcparse"
3111 mpegaudio_parser_select="mpegaudioheader"
3112 mpegvideo_parser_select="mpegvideo"
3113 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
3114 vc1_parser_select="vc1dsp"
3115
3116 # bitstream_filters
3117 aac_adtstoasc_bsf_select="adts_header"
3118 av1_frame_split_bsf_select="cbs_av1"
3119 av1_metadata_bsf_select="cbs_av1"
3120 eac3_core_bsf_select="ac3_parser"
3121 filter_units_bsf_select="cbs"
3122 h264_metadata_bsf_deps="const_nan"
3123 h264_metadata_bsf_select="cbs_h264"
3124 h264_redundant_pps_bsf_select="cbs_h264"
3125 hevc_metadata_bsf_select="cbs_h265"
3126 mjpeg2jpeg_bsf_select="jpegtables"
3127 mpeg2_metadata_bsf_select="cbs_mpeg2"
3128 trace_headers_bsf_select="cbs"
3129 vp9_metadata_bsf_select="cbs_vp9"
3130
3131 # external libraries
3132 aac_at_decoder_deps="audiotoolbox"
3133 aac_at_decoder_select="aac_adtstoasc_bsf"
3134 ac3_at_decoder_deps="audiotoolbox"
3135 ac3_at_decoder_select="ac3_parser"
3136 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
3137 alac_at_decoder_deps="audiotoolbox"
3138 amr_nb_at_decoder_deps="audiotoolbox"
3139 avisynth_deps_any="libdl LoadLibrary"
3140 avisynth_demuxer_deps="avisynth"
3141 avisynth_demuxer_select="riffdec"
3142 eac3_at_decoder_deps="audiotoolbox"
3143 eac3_at_decoder_select="ac3_parser"
3144 gsm_ms_at_decoder_deps="audiotoolbox"
3145 ilbc_at_decoder_deps="audiotoolbox"
3146 mp1_at_decoder_deps="audiotoolbox"
3147 mp2_at_decoder_deps="audiotoolbox"
3148 mp3_at_decoder_deps="audiotoolbox"
3149 mp1_at_decoder_select="mpegaudioheader"
3150 mp2_at_decoder_select="mpegaudioheader"
3151 mp3_at_decoder_select="mpegaudioheader"
3152 pcm_alaw_at_decoder_deps="audiotoolbox"
3153 pcm_mulaw_at_decoder_deps="audiotoolbox"
3154 qdmc_decoder_select="fft"
3155 qdmc_at_decoder_deps="audiotoolbox"
3156 qdm2_at_decoder_deps="audiotoolbox"
3157 aac_at_encoder_deps="audiotoolbox"
3158 aac_at_encoder_select="audio_frame_queue"
3159 alac_at_encoder_deps="audiotoolbox"
3160 alac_at_encoder_select="audio_frame_queue"
3161 ilbc_at_encoder_deps="audiotoolbox"
3162 ilbc_at_encoder_select="audio_frame_queue"
3163 pcm_alaw_at_encoder_deps="audiotoolbox"
3164 pcm_alaw_at_encoder_select="audio_frame_queue"
3165 pcm_mulaw_at_encoder_deps="audiotoolbox"
3166 pcm_mulaw_at_encoder_select="audio_frame_queue"
3167 chromaprint_muxer_deps="chromaprint"
3168 h264_videotoolbox_encoder_deps="pthreads"
3169 h264_videotoolbox_encoder_select="videotoolbox_encoder"
3170 hevc_videotoolbox_encoder_deps="pthreads"
3171 hevc_videotoolbox_encoder_select="videotoolbox_encoder"
3172 libaom_av1_decoder_deps="libaom"
3173 libaom_av1_encoder_deps="libaom"
3174 libaom_av1_encoder_select="extract_extradata_bsf"
3175 libaribb24_decoder_deps="libaribb24"
3176 libcelt_decoder_deps="libcelt"
3177 libcodec2_decoder_deps="libcodec2"
3178 libcodec2_encoder_deps="libcodec2"
3179 libdav1d_decoder_deps="libdav1d"
3180 libdavs2_decoder_deps="libdavs2"
3181 libfdk_aac_decoder_deps="libfdk_aac"
3182 libfdk_aac_encoder_deps="libfdk_aac"
3183 libfdk_aac_encoder_select="audio_frame_queue"
3184 libgme_demuxer_deps="libgme"
3185 libgsm_decoder_deps="libgsm"
3186 libgsm_encoder_deps="libgsm"
3187 libgsm_ms_decoder_deps="libgsm"
3188 libgsm_ms_encoder_deps="libgsm"
3189 libilbc_decoder_deps="libilbc"
3190 libilbc_encoder_deps="libilbc"
3191 libkvazaar_encoder_deps="libkvazaar"
3192 libmodplug_demuxer_deps="libmodplug"
3193 libmp3lame_encoder_deps="libmp3lame"
3194 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
3195 libopencore_amrnb_decoder_deps="libopencore_amrnb"
3196 libopencore_amrnb_encoder_deps="libopencore_amrnb"
3197 libopencore_amrnb_encoder_select="audio_frame_queue"
3198 libopencore_amrwb_decoder_deps="libopencore_amrwb"
3199 libopenh264_decoder_deps="libopenh264"
3200 libopenh264_decoder_select="h264_mp4toannexb_bsf"
3201 libopenh264_encoder_deps="libopenh264"
3202 libopenjpeg_decoder_deps="libopenjpeg"
3203 libopenjpeg_encoder_deps="libopenjpeg"
3204 libopenmpt_demuxer_deps="libopenmpt"
3205 libopus_decoder_deps="libopus"
3206 libopus_encoder_deps="libopus"
3207 libopus_encoder_select="audio_frame_queue"
3208 librav1e_encoder_deps="librav1e"
3209 librav1e_encoder_select="extract_extradata_bsf"
3210 librsvg_decoder_deps="librsvg"
3211 libshine_encoder_deps="libshine"
3212 libshine_encoder_select="audio_frame_queue"
3213 libspeex_decoder_deps="libspeex"
3214 libspeex_encoder_deps="libspeex"
3215 libspeex_encoder_select="audio_frame_queue"
3216 libtheora_encoder_deps="libtheora"
3217 libtwolame_encoder_deps="libtwolame"
3218 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
3219 libvorbis_decoder_deps="libvorbis"
3220 libvorbis_encoder_deps="libvorbis libvorbisenc"
3221 libvorbis_encoder_select="audio_frame_queue"
3222 libvpx_vp8_decoder_deps="libvpx"
3223 libvpx_vp8_encoder_deps="libvpx"
3224 libvpx_vp9_decoder_deps="libvpx"
3225 libvpx_vp9_encoder_deps="libvpx"
3226 libwavpack_encoder_deps="libwavpack"
3227 libwavpack_encoder_select="audio_frame_queue"
3228 libwebp_encoder_deps="libwebp"
3229 libwebp_anim_encoder_deps="libwebp"
3230 libx262_encoder_deps="libx262"
3231 libx264_encoder_deps="libx264"
3232 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
3233 libx264rgb_encoder_select="libx264_encoder"
3234 libx265_encoder_deps="libx265"
3235 libxavs_encoder_deps="libxavs"
3236 libxavs2_encoder_deps="libxavs2"
3237 libxvid_encoder_deps="libxvid"
3238 libzvbi_teletext_decoder_deps="libzvbi"
3239 vapoursynth_demuxer_deps="vapoursynth"
3240 videotoolbox_suggest="coreservices"
3241 videotoolbox_deps="corefoundation coremedia corevideo"
3242 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
3243
3244 # demuxers / muxers
3245 ac3_demuxer_select="ac3_parser"
3246 act_demuxer_select="riffdec"
3247 aiff_muxer_select="iso_media"
3248 asf_demuxer_select="riffdec"
3249 asf_o_demuxer_select="riffdec"
3250 asf_muxer_select="riffenc"
3251 asf_stream_muxer_select="asf_muxer"
3252 avi_demuxer_select="iso_media riffdec exif"
3253 avi_muxer_select="riffenc"
3254 caf_demuxer_select="iso_media riffdec"
3255 caf_muxer_select="iso_media"
3256 dash_muxer_select="mp4_muxer"
3257 dash_demuxer_deps="libxml2"
3258 dirac_demuxer_select="dirac_parser"
3259 dts_demuxer_select="dca_parser"
3260 dtshd_demuxer_select="dca_parser"
3261 dv_demuxer_select="dvprofile"
3262 dv_muxer_select="dvprofile"
3263 dxa_demuxer_select="riffdec"
3264 eac3_demuxer_select="ac3_parser"
3265 f4v_muxer_select="mov_muxer"
3266 fifo_muxer_deps="threads"
3267 flac_demuxer_select="flac_parser"
3268 hds_muxer_select="flv_muxer"
3269 hls_muxer_select="mpegts_muxer"
3270 hls_muxer_suggest="gcrypt openssl"
3271 image2_alias_pix_demuxer_select="image2_demuxer"
3272 image2_brender_pix_demuxer_select="image2_demuxer"
3273 ipod_muxer_select="mov_muxer"
3274 ismv_muxer_select="mov_muxer"
3275 ivf_muxer_select="av1_metadata_bsf vp9_superframe_bsf"
3276 matroska_audio_muxer_select="matroska_muxer"
3277 matroska_demuxer_select="iso_media riffdec"
3278 matroska_demuxer_suggest="bzlib lzo zlib"
3279 matroska_muxer_select="iso_media riffenc"
3280 mmf_muxer_select="riffenc"
3281 mov_demuxer_select="iso_media riffdec"
3282 mov_demuxer_suggest="zlib"
3283 mov_muxer_select="iso_media riffenc rtpenc_chain"
3284 mp3_demuxer_select="mpegaudio_parser"
3285 mp3_muxer_select="mpegaudioheader"
3286 mp4_muxer_select="mov_muxer"
3287 mpegts_demuxer_select="iso_media"
3288 mpegts_muxer_select="adts_muxer latm_muxer"
3289 mpegtsraw_demuxer_select="mpegts_demuxer"
3290 mxf_muxer_select="golomb"
3291 mxf_d10_muxer_select="mxf_muxer"
3292 mxf_opatom_muxer_select="mxf_muxer"
3293 nut_muxer_select="riffenc"
3294 nuv_demuxer_select="riffdec"
3295 oga_muxer_select="ogg_muxer"
3296 ogg_demuxer_select="dirac_parse"
3297 ogv_muxer_select="ogg_muxer"
3298 opus_muxer_select="ogg_muxer"
3299 psp_muxer_select="mov_muxer"
3300 rtp_demuxer_select="sdp_demuxer"
3301 rtp_muxer_select="golomb jpegtables"
3302 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3303 rtsp_demuxer_select="http_protocol rtpdec"
3304 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3305 sap_demuxer_select="sdp_demuxer"
3306 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3307 sdp_demuxer_select="rtpdec"
3308 smoothstreaming_muxer_select="ismv_muxer"
3309 spdif_demuxer_select="adts_header"
3310 spdif_muxer_select="adts_header"
3311 spx_muxer_select="ogg_muxer"
3312 swf_demuxer_suggest="zlib"
3313 tak_demuxer_select="tak_parser"
3314 tg2_muxer_select="mov_muxer"
3315 tgp_muxer_select="mov_muxer"
3316 vobsub_demuxer_select="mpegps_demuxer"
3317 w64_demuxer_select="wav_demuxer"
3318 w64_muxer_select="wav_muxer"
3319 wav_demuxer_select="riffdec"
3320 wav_muxer_select="riffenc"
3321 webm_muxer_select="iso_media riffenc"
3322 webm_dash_manifest_demuxer_select="matroska_demuxer"
3323 wtv_demuxer_select="mpegts_demuxer riffdec"
3324 wtv_muxer_select="mpegts_muxer riffenc"
3325 xmv_demuxer_select="riffdec"
3326 xwma_demuxer_select="riffdec"
3327
3328 # indevs / outdevs
3329 android_camera_indev_deps="android camera2ndk mediandk pthreads"
3330 android_camera_indev_extralibs="-landroid -lcamera2ndk -lmediandk"
3331 alsa_indev_deps="alsa"
3332 alsa_outdev_deps="alsa"
3333 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3334 avfoundation_indev_suggest="coregraphics applicationservices"
3335 avfoundation_indev_extralibs="-framework Foundation"
3336 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3337 caca_outdev_deps="libcaca"
3338 decklink_deps_any="libdl LoadLibrary"
3339 decklink_indev_deps="decklink threads"
3340 decklink_indev_extralibs="-lstdc++"
3341 decklink_outdev_deps="decklink threads"
3342 decklink_outdev_suggest="libklvanc"
3343 decklink_outdev_extralibs="-lstdc++"
3344 dshow_indev_deps="IBaseFilter"
3345 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3346 fbdev_indev_deps="linux_fb_h"
3347 fbdev_outdev_deps="linux_fb_h"
3348 gdigrab_indev_deps="CreateDIBSection"
3349 gdigrab_indev_extralibs="-lgdi32"
3350 gdigrab_indev_select="bmp_decoder"
3351 iec61883_indev_deps="libiec61883"
3352 jack_indev_deps="libjack"
3353 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3354 kmsgrab_indev_deps="libdrm"
3355 lavfi_indev_deps="avfilter"
3356 libcdio_indev_deps="libcdio"
3357 libdc1394_indev_deps="libdc1394"
3358 openal_indev_deps="openal"
3359 opengl_outdev_deps="opengl"
3360 opengl_outdev_suggest="sdl2"
3361 oss_indev_deps_any="sys_soundcard_h"
3362 oss_outdev_deps_any="sys_soundcard_h"
3363 pulse_indev_deps="libpulse"
3364 pulse_outdev_deps="libpulse"
3365 sdl2_outdev_deps="sdl2"
3366 sndio_indev_deps="sndio"
3367 sndio_outdev_deps="sndio"
3368 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3369 v4l2_indev_suggest="libv4l2"
3370 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3371 v4l2_outdev_suggest="libv4l2"
3372 vfwcap_indev_deps="vfw32 vfwcap_defines"
3373 xcbgrab_indev_deps="libxcb"
3374 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3375 xv_outdev_deps="xlib"
3376
3377 # protocols
3378 async_protocol_deps="threads"
3379 bluray_protocol_deps="libbluray"
3380 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3381 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl mbedtls"
3382 ffrtmpcrypt_protocol_select="tcp_protocol"
3383 ffrtmphttp_protocol_conflict="librtmp_protocol"
3384 ffrtmphttp_protocol_select="http_protocol"
3385 ftp_protocol_select="tcp_protocol"
3386 gopher_protocol_select="network"
3387 http_protocol_select="tcp_protocol"
3388 http_protocol_suggest="zlib"
3389 httpproxy_protocol_select="tcp_protocol"
3390 httpproxy_protocol_suggest="zlib"
3391 https_protocol_select="tls_protocol"
3392 https_protocol_suggest="zlib"
3393 icecast_protocol_select="http_protocol"
3394 mmsh_protocol_select="http_protocol"
3395 mmst_protocol_select="network"
3396 rtmp_protocol_conflict="librtmp_protocol"
3397 rtmp_protocol_select="tcp_protocol"
3398 rtmp_protocol_suggest="zlib"
3399 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3400 rtmpe_protocol_suggest="zlib"
3401 rtmps_protocol_conflict="librtmp_protocol"
3402 rtmps_protocol_select="tls_protocol"
3403 rtmps_protocol_suggest="zlib"
3404 rtmpt_protocol_select="ffrtmphttp_protocol"
3405 rtmpt_protocol_suggest="zlib"
3406 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3407 rtmpte_protocol_suggest="zlib"
3408 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3409 rtmpts_protocol_suggest="zlib"
3410 rtp_protocol_select="udp_protocol"
3411 schannel_conflict="openssl gnutls libtls mbedtls"
3412 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3413 sctp_protocol_select="network"
3414 securetransport_conflict="openssl gnutls libtls mbedtls"
3415 srtp_protocol_select="rtp_protocol srtp"
3416 tcp_protocol_select="network"
3417 tls_protocol_deps_any="gnutls openssl schannel securetransport libtls mbedtls"
3418 tls_protocol_select="tcp_protocol"
3419 udp_protocol_select="network"
3420 udplite_protocol_select="network"
3421 unix_protocol_deps="sys_un_h"
3422 unix_protocol_select="network"
3423
3424 # external library protocols
3425 librtmp_protocol_deps="librtmp"
3426 librtmpe_protocol_deps="librtmp"
3427 librtmps_protocol_deps="librtmp"
3428 librtmpt_protocol_deps="librtmp"
3429 librtmpte_protocol_deps="librtmp"
3430 libsmbclient_protocol_deps="libsmbclient gplv3"
3431 libsrt_protocol_deps="libsrt"
3432 libsrt_protocol_select="network"
3433 libssh_protocol_deps="libssh"
3434 libtls_conflict="openssl gnutls mbedtls"
3435 libzmq_protocol_deps="libzmq"
3436 libzmq_protocol_select="network"
3437
3438 # filters
3439 afftdn_filter_deps="avcodec"
3440 afftdn_filter_select="fft"
3441 afftfilt_filter_deps="avcodec"
3442 afftfilt_filter_select="fft"
3443 afir_filter_deps="avcodec"
3444 afir_filter_select="rdft"
3445 amovie_filter_deps="avcodec avformat"
3446 aresample_filter_deps="swresample"
3447 asr_filter_deps="pocketsphinx"
3448 ass_filter_deps="libass"
3449 atempo_filter_deps="avcodec"
3450 atempo_filter_select="rdft"
3451 avgblur_opencl_filter_deps="opencl"
3452 azmq_filter_deps="libzmq"
3453 blackframe_filter_deps="gpl"
3454 bm3d_filter_deps="avcodec"
3455 bm3d_filter_select="dct"
3456 boxblur_filter_deps="gpl"
3457 boxblur_opencl_filter_deps="opencl gpl"
3458 bs2b_filter_deps="libbs2b"
3459 colorkey_opencl_filter_deps="opencl"
3460 colormatrix_filter_deps="gpl"
3461 convolution_opencl_filter_deps="opencl"
3462 convolve_filter_deps="avcodec"
3463 convolve_filter_select="fft"
3464 coreimage_filter_deps="coreimage appkit"
3465 coreimage_filter_extralibs="-framework OpenGL"
3466 coreimagesrc_filter_deps="coreimage appkit"
3467 coreimagesrc_filter_extralibs="-framework OpenGL"
3468 cover_rect_filter_deps="avcodec avformat gpl"
3469 cropdetect_filter_deps="gpl"
3470 deconvolve_filter_deps="avcodec"
3471 deconvolve_filter_select="fft"
3472 deinterlace_qsv_filter_deps="libmfx"
3473 deinterlace_vaapi_filter_deps="vaapi"
3474 delogo_filter_deps="gpl"
3475 denoise_vaapi_filter_deps="vaapi"
3476 derain_filter_select="dnn"
3477 deshake_filter_select="pixelutils"
3478 deshake_opencl_filter_deps="opencl"
3479 dilation_opencl_filter_deps="opencl"
3480 dnn_processing_filter_select="dnn"
3481 drawtext_filter_deps="libfreetype"
3482 drawtext_filter_suggest="libfontconfig libfribidi"
3483 elbg_filter_deps="avcodec"
3484 eq_filter_deps="gpl"
3485 erosion_opencl_filter_deps="opencl"
3486 fftfilt_filter_deps="avcodec"
3487 fftfilt_filter_select="rdft"
3488 fftdnoiz_filter_deps="avcodec"
3489 fftdnoiz_filter_select="fft"
3490 find_rect_filter_deps="avcodec avformat gpl"
3491 firequalizer_filter_deps="avcodec"
3492 firequalizer_filter_select="rdft"
3493 flite_filter_deps="libflite"
3494 framerate_filter_select="scene_sad"
3495 freezedetect_filter_select="scene_sad"
3496 frei0r_filter_deps="frei0r libdl"
3497 frei0r_src_filter_deps="frei0r libdl"
3498 fspp_filter_deps="gpl"
3499 geq_filter_deps="gpl"
3500 histeq_filter_deps="gpl"
3501 hqdn3d_filter_deps="gpl"
3502 interlace_filter_deps="gpl"
3503 kerndeint_filter_deps="gpl"
3504 ladspa_filter_deps="ladspa libdl"
3505 lensfun_filter_deps="liblensfun version3"
3506 lv2_filter_deps="lv2"
3507 mcdeint_filter_deps="avcodec gpl"
3508 movie_filter_deps="avcodec avformat"
3509 mpdecimate_filter_deps="gpl"
3510 mpdecimate_filter_select="pixelutils"
3511 minterpolate_filter_select="scene_sad"
3512 mptestsrc_filter_deps="gpl"
3513 negate_filter_deps="lut_filter"
3514 nlmeans_opencl_filter_deps="opencl"
3515 nnedi_filter_deps="gpl"
3516 ocr_filter_deps="libtesseract"
3517 ocv_filter_deps="libopencv"
3518 openclsrc_filter_deps="opencl"
3519 overlay_opencl_filter_deps="opencl"
3520 overlay_qsv_filter_deps="libmfx"
3521 overlay_qsv_filter_select="qsvvpp"
3522 owdenoise_filter_deps="gpl"
3523 pan_filter_deps="swresample"
3524 perspective_filter_deps="gpl"
3525 phase_filter_deps="gpl"
3526 pp7_filter_deps="gpl"
3527 pp_filter_deps="gpl postproc"
3528 prewitt_opencl_filter_deps="opencl"
3529 procamp_vaapi_filter_deps="vaapi"
3530 program_opencl_filter_deps="opencl"
3531 pullup_filter_deps="gpl"
3532 removelogo_filter_deps="avcodec avformat swscale"
3533 repeatfields_filter_deps="gpl"
3534 resample_filter_deps="avresample"
3535 roberts_opencl_filter_deps="opencl"
3536 rubberband_filter_deps="librubberband"
3537 sab_filter_deps="gpl swscale"
3538 scale2ref_filter_deps="swscale"
3539 scale_filter_deps="swscale"
3540 scale_qsv_filter_deps="libmfx"
3541 select_filter_select="scene_sad"
3542 sharpness_vaapi_filter_deps="vaapi"
3543 showcqt_filter_deps="avcodec avformat swscale"
3544 showcqt_filter_suggest="libfontconfig libfreetype"
3545 showcqt_filter_select="fft"
3546 showfreqs_filter_deps="avcodec"
3547 showfreqs_filter_select="fft"
3548 showspectrum_filter_deps="avcodec"
3549 showspectrum_filter_select="fft"
3550 showspectrumpic_filter_deps="avcodec"
3551 showspectrumpic_filter_select="fft"
3552 signature_filter_deps="gpl avcodec avformat"
3553 sinc_filter_select="rdft"
3554 smartblur_filter_deps="gpl swscale"
3555 sobel_opencl_filter_deps="opencl"
3556 sofalizer_filter_deps="libmysofa avcodec"
3557 sofalizer_filter_select="fft"
3558 spectrumsynth_filter_deps="avcodec"
3559 spectrumsynth_filter_select="fft"
3560 spp_filter_deps="gpl avcodec"
3561 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3562 sr_filter_deps="avformat swscale"
3563 sr_filter_select="dnn"
3564 stereo3d_filter_deps="gpl"
3565 subtitles_filter_deps="avformat avcodec libass"
3566 super2xsai_filter_deps="gpl"
3567 pixfmts_super2xsai_test_deps="super2xsai_filter"
3568 superequalizer_filter_select="rdft"
3569 surround_filter_select="rdft"
3570 tinterlace_filter_deps="gpl"
3571 tinterlace_merge_test_deps="tinterlace_filter"
3572 tinterlace_pad_test_deps="tinterlace_filter"
3573 tonemap_filter_deps="const_nan"
3574 tonemap_opencl_filter_deps="opencl const_nan"
3575 transpose_opencl_filter_deps="opencl"
3576 transpose_vaapi_filter_deps="vaapi VAProcPipelineCaps_rotation_flags"
3577 unsharp_opencl_filter_deps="opencl"
3578 uspp_filter_deps="gpl avcodec"
3579 vaguedenoiser_filter_deps="gpl"
3580 vidstabdetect_filter_deps="libvidstab"
3581 vidstabtransform_filter_deps="libvidstab"
3582 libvmaf_filter_deps="libvmaf pthreads"
3583 zmq_filter_deps="libzmq"
3584 zoompan_filter_deps="swscale"
3585 zscale_filter_deps="libzimg const_nan"
3586 scale_vaapi_filter_deps="vaapi"
3587 vpp_qsv_filter_deps="libmfx"
3588 vpp_qsv_filter_select="qsvvpp"
3589 yadif_cuda_filter_deps="ffnvcodec"
3590 yadif_cuda_filter_deps_any="cuda_nvcc cuda_llvm"
3591
3592 # examples
3593 avio_dir_cmd_deps="avformat avutil"
3594 avio_reading_deps="avformat avcodec avutil"
3595 decode_audio_example_deps="avcodec avutil"
3596 decode_video_example_deps="avcodec avutil"
3597 demuxing_decoding_example_deps="avcodec avformat avutil"
3598 encode_audio_example_deps="avcodec avutil"
3599 encode_video_example_deps="avcodec avutil"
3600 extract_mvs_example_deps="avcodec avformat avutil"
3601 filter_audio_example_deps="avfilter avutil"
3602 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3603 filtering_video_example_deps="avfilter avcodec avformat avutil"
3604 http_multiclient_example_deps="avformat avutil fork"
3605 hw_decode_example_deps="avcodec avformat avutil"
3606 metadata_example_deps="avformat avutil"
3607 muxing_example_deps="avcodec avformat avutil swscale"
3608 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3609 remuxing_example_deps="avcodec avformat avutil"
3610 resampling_audio_example_deps="avutil swresample"
3611 scaling_video_example_deps="avutil swscale"
3612 transcode_aac_example_deps="avcodec avformat swresample"
3613 transcoding_example_deps="avfilter avcodec avformat avutil"
3614 vaapi_encode_example_deps="avcodec avutil h264_vaapi_encoder"
3615 vaapi_transcode_example_deps="avcodec avformat avutil h264_vaapi_encoder"
3616
3617 # EXTRALIBS_LIST
3618 cpu_init_extralibs="pthreads_extralibs"
3619 cws2fws_extralibs="zlib_extralibs"
3620
3621 # libraries, in any order
3622 avcodec_deps="avutil"
3623 avcodec_suggest="libm"
3624 avcodec_select="null_bsf"
3625 avdevice_deps="avformat avcodec avutil"
3626 avdevice_suggest="libm"
3627 avfilter_deps="avutil"
3628 avfilter_suggest="libm"
3629 avformat_deps="avcodec avutil"
3630 avformat_suggest="libm network zlib"
3631 avresample_deps="avutil"
3632 avresample_suggest="libm"
3633 avutil_suggest="clock_gettime ffnvcodec libm libdrm libmfx opencl user32 vaapi videotoolbox corefoundation corevideo coremedia bcrypt"
3634 postproc_deps="avutil gpl"
3635 postproc_suggest="libm"
3636 swresample_deps="avutil"
3637 swresample_suggest="libm libsoxr"
3638 swscale_deps="avutil"
3639 swscale_suggest="libm"
3640
3641 avcodec_extralibs="pthreads_extralibs iconv_extralibs dxva2_extralibs"
3642 avfilter_extralibs="pthreads_extralibs"
3643 avutil_extralibs="d3d11va_extralibs nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3644
3645 # programs
3646 ffmpeg_deps="avcodec avfilter avformat"
3647 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3648                hflip_filter null_filter
3649                transpose_filter trim_filter vflip_filter"
3650 ffmpeg_suggest="ole32 psapi shell32"
3651 ffplay_deps="avcodec avformat swscale swresample sdl2"
3652 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3653 ffplay_suggest="shell32"
3654 ffprobe_deps="avcodec avformat"
3655 ffprobe_suggest="shell32"
3656
3657 # documentation
3658 podpages_deps="perl"
3659 manpages_deps="perl pod2man"
3660 htmlpages_deps="perl"
3661 htmlpages_deps_any="makeinfo_html texi2html"
3662 txtpages_deps="perl makeinfo"
3663 doc_deps_any="manpages htmlpages podpages txtpages"
3664
3665 # default parameters
3666
3667 logfile="ffbuild/config.log"
3668
3669 # installation paths
3670 prefix_default="/usr/local"
3671 bindir_default='${prefix}/bin'
3672 datadir_default='${prefix}/share/ffmpeg'
3673 docdir_default='${prefix}/share/doc/ffmpeg'
3674 incdir_default='${prefix}/include'
3675 libdir_default='${prefix}/lib'
3676 mandir_default='${prefix}/share/man'
3677
3678 # toolchain
3679 ar_default="ar"
3680 cc_default="gcc"
3681 cxx_default="g++"
3682 host_cc_default="gcc"
3683 doxygen_default="doxygen"
3684 install="install"
3685 ln_s_default="ln -s -f"
3686 nm_default="nm -g"
3687 pkg_config_default=pkg-config
3688 ranlib_default="ranlib"
3689 strip_default="strip"
3690 version_script='--version-script'
3691 objformat="elf32"
3692 x86asmexe_default="nasm"
3693 windres_default="windres"
3694 striptype="direct"
3695
3696 # OS
3697 target_os_default=$(tolower $(uname -s))
3698 host_os=$target_os_default
3699
3700 # machine
3701 if test "$target_os_default" = aix; then
3702     arch_default=$(uname -p)
3703     strip_default="strip -X32_64"
3704     nm_default="nm -g -X32_64"
3705 else
3706     arch_default=$(uname -m)
3707 fi
3708 cpu="generic"
3709 intrinsics="none"
3710
3711 # configurable options
3712 enable $PROGRAM_LIST
3713 enable $DOCUMENT_LIST
3714 enable $EXAMPLE_LIST
3715 enable $(filter_out avresample $LIBRARY_LIST)
3716 enable stripping
3717
3718 enable asm
3719 enable debug
3720 enable doc
3721 enable faan faandct faanidct
3722 enable optimizations
3723 enable runtime_cpudetect
3724 enable safe_bitstream_reader
3725 enable static
3726 enable swscale_alpha
3727 enable valgrind_backtrace
3728
3729 sws_max_filter_size_default=256
3730 set_default sws_max_filter_size
3731
3732 # internal components are enabled by default
3733 enable $EXTRALIBS_LIST
3734
3735 # Avoid external, non-system, libraries getting enabled by dependency resolution
3736 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3737
3738 # build settings
3739 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3740 LIBPREF="lib"
3741 LIBSUF=".a"
3742 FULLNAME='$(NAME)$(BUILDSUF)'
3743 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3744 SLIBPREF="lib"
3745 SLIBSUF=".so"
3746 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3747 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3748 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3749 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3750 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3751 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3752 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3753
3754 asflags_filter=echo
3755 cflags_filter=echo
3756 ldflags_filter=echo
3757
3758 AS_C='-c'
3759 AS_O='-o $@'
3760 CC_C='-c'
3761 CC_E='-E -o $@'
3762 CC_O='-o $@'
3763 CXX_C='-c'
3764 CXX_O='-o $@'
3765 OBJCC_C='-c'
3766 OBJCC_E='-E -o $@'
3767 OBJCC_O='-o $@'
3768 X86ASM_O='-o $@'
3769 LD_O='-o $@'
3770 LD_LIB='-l%'
3771 LD_PATH='-L'
3772 HOSTCC_C='-c'
3773 HOSTCC_E='-E -o $@'
3774 HOSTCC_O='-o $@'
3775 HOSTLD_O='-o $@'
3776 NVCC_C='-c'
3777 NVCC_O='-o $@'
3778
3779 host_extralibs='-lm'
3780 host_cflags_filter=echo
3781 host_ldflags_filter=echo
3782
3783 target_path='$(CURDIR)'
3784
3785 # since the object filename is not given with the -MM flag, the compiler
3786 # is only able to print the basename, and we must add the path ourselves
3787 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3788 DEPFLAGS='-MM'
3789
3790 mkdir -p ffbuild
3791
3792 # find source path
3793 if test -f configure; then
3794     source_path=.
3795 elif test -f src/configure; then
3796     source_path=src
3797 else
3798     source_path=$(cd $(dirname "$0"); pwd)
3799     case "$source_path" in
3800         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3801     esac
3802     test -e "$source_path/config.h" &&
3803         die "Out of tree builds are impossible with config.h in source dir."
3804 fi
3805
3806 for v in "$@"; do
3807     r=${v#*=}
3808     l=${v%"$r"}
3809     r=$(sh_quote "$r")
3810     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3811 done
3812
3813 find_things_extern(){
3814     thing=$1
3815     pattern=$2
3816     file=$source_path/$3
3817     out=${4:-$thing}
3818     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$out/p" "$file"
3819 }
3820
3821 find_filters_extern(){
3822     file=$source_path/$1
3823     sed -n 's/^extern AVFilter ff_[avfsinkrc]\{2,5\}_\([[:alnum:]_]\{1,\}\);/\1_filter/p' $file
3824 }
3825
3826 FILTER_LIST=$(find_filters_extern libavfilter/allfilters.c)
3827 OUTDEV_LIST=$(find_things_extern muxer AVOutputFormat libavdevice/alldevices.c outdev)
3828 INDEV_LIST=$(find_things_extern demuxer AVInputFormat libavdevice/alldevices.c indev)
3829 MUXER_LIST=$(find_things_extern muxer AVOutputFormat libavformat/allformats.c)
3830 DEMUXER_LIST=$(find_things_extern demuxer AVInputFormat libavformat/allformats.c)
3831 ENCODER_LIST=$(find_things_extern encoder AVCodec libavcodec/allcodecs.c)
3832 DECODER_LIST=$(find_things_extern decoder AVCodec libavcodec/allcodecs.c)
3833 CODEC_LIST="
3834     $ENCODER_LIST
3835     $DECODER_LIST
3836 "
3837 PARSER_LIST=$(find_things_extern parser AVCodecParser libavcodec/parsers.c)
3838 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3839 HWACCEL_LIST=$(find_things_extern hwaccel AVHWAccel libavcodec/hwaccels.h)
3840 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3841
3842 AVCODEC_COMPONENTS_LIST="
3843     $BSF_LIST
3844     $DECODER_LIST
3845     $ENCODER_LIST
3846     $HWACCEL_LIST
3847     $PARSER_LIST
3848 "
3849
3850 AVDEVICE_COMPONENTS_LIST="
3851     $INDEV_LIST
3852     $OUTDEV_LIST
3853 "
3854
3855 AVFILTER_COMPONENTS_LIST="
3856     $FILTER_LIST
3857 "
3858
3859 AVFORMAT_COMPONENTS_LIST="
3860     $DEMUXER_LIST
3861     $MUXER_LIST
3862     $PROTOCOL_LIST
3863 "
3864
3865 ALL_COMPONENTS="
3866     $AVCODEC_COMPONENTS_LIST
3867     $AVDEVICE_COMPONENTS_LIST
3868     $AVFILTER_COMPONENTS_LIST
3869     $AVFORMAT_COMPONENTS_LIST
3870 "
3871
3872 for n in $COMPONENT_LIST; do
3873     v=$(toupper ${n%s})_LIST
3874     eval enable \$$v
3875     eval ${n}_if_any="\$$v"
3876 done
3877
3878 enable $ARCH_EXT_LIST
3879
3880 die_unknown(){
3881     echo "Unknown option \"$1\"."
3882     echo "See $0 --help for available options."
3883     exit 1
3884 }
3885
3886 print_in_columns() {
3887     tr ' ' '\n' | sort | tr '\r\n' '  ' | awk -v col_width=24 -v width="$ncols" '
3888     {
3889         num_cols = width > col_width ? int(width / col_width) : 1;
3890         num_rows = int((NF + num_cols-1) / num_cols);
3891         y = x = 1;
3892         for (y = 1; y <= num_rows; y++) {
3893             i = y;
3894             for (x = 1; x <= num_cols; x++) {
3895                 if (i <= NF) {
3896                   line = sprintf("%s%-" col_width "s", line, $i);
3897                 }
3898                 i = i + num_rows;
3899             }
3900             print line; line = "";
3901         }
3902     }' | sed 's/ *$//'
3903 }
3904
3905 show_list() {
3906     suffix=_$1
3907     shift
3908     echo $* | sed s/$suffix//g | print_in_columns
3909     exit 0
3910 }
3911
3912 rand_list(){
3913     IFS=', '
3914     set -- $*
3915     unset IFS
3916     for thing; do
3917         comp=${thing%:*}
3918         prob=${thing#$comp}
3919         prob=${prob#:}
3920         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3921         echo "prob ${prob:-0.5}"
3922         printf '%s\n' $comp
3923     done
3924 }
3925
3926 do_random(){
3927     action=$1
3928     shift
3929     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3930     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3931 }
3932
3933 for opt do
3934     optval="${opt#*=}"
3935     case "$opt" in
3936         --extra-ldflags=*)
3937             add_ldflags $optval
3938         ;;
3939         --extra-ldexeflags=*)
3940             add_ldexeflags $optval
3941         ;;
3942         --extra-ldsoflags=*)
3943             add_ldsoflags $optval
3944         ;;
3945         --extra-ldlibflags=*)
3946             warn "The --extra-ldlibflags option is only provided for compatibility and will be\n"\
3947                  "removed in the future. Use --extra-ldsoflags instead."
3948             add_ldsoflags $optval
3949         ;;
3950         --extra-libs=*)
3951             add_extralibs $optval
3952         ;;
3953         --disable-devices)
3954             disable $INDEV_LIST $OUTDEV_LIST
3955         ;;
3956         --enable-debug=*)
3957             debuglevel="$optval"
3958         ;;
3959         --disable-programs)
3960             disable $PROGRAM_LIST
3961         ;;
3962         --disable-everything)
3963             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3964         ;;
3965         --disable-all)
3966             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3967             disable $LIBRARY_LIST $PROGRAM_LIST doc
3968             enable avutil
3969         ;;
3970         --enable-random|--disable-random)
3971             action=${opt%%-random}
3972             do_random ${action#--} $COMPONENT_LIST
3973         ;;
3974         --enable-random=*|--disable-random=*)
3975             action=${opt%%-random=*}
3976             do_random ${action#--} $optval
3977         ;;
3978         --enable-sdl)
3979             enable sdl2
3980         ;;
3981         --enable-*=*|--disable-*=*)
3982             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3983             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3984             eval list=\$$(toupper $thing)_LIST
3985             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3986             list=$(filter "$name" $list)
3987             [ "$list" = "" ] && warn "Option $opt did not match anything"
3988             test $action = enable && warn_if_gets_disabled $list
3989             $action $list
3990         ;;
3991         --enable-yasm|--disable-yasm)
3992             warn "The ${opt} option is only provided for compatibility and will be\n"\
3993                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3994             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3995         ;;
3996         --yasmexe=*)
3997             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3998                  "removed in the future. Use --x86asmexe instead."
3999             x86asmexe="$optval"
4000         ;;
4001         --enable-?*|--disable-?*)
4002             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
4003             if is_in $option $COMPONENT_LIST; then
4004                 test $action = disable && action=unset
4005                 eval $action \$$(toupper ${option%s})_LIST
4006             elif is_in $option $CMDLINE_SELECT; then
4007                 $action $option
4008             else
4009                 die_unknown $opt
4010             fi
4011         ;;
4012         --list-*)
4013             NAME="${opt#--list-}"
4014             is_in $NAME $COMPONENT_LIST || die_unknown $opt
4015             NAME=${NAME%s}
4016             eval show_list $NAME \$$(toupper $NAME)_LIST
4017         ;;
4018         --help|-h) show_help
4019         ;;
4020         --quiet|-q) quiet=yes
4021         ;;
4022         --fatal-warnings) enable fatal_warnings
4023         ;;
4024         --libfuzzer=*)
4025             libfuzzer_path="$optval"
4026         ;;
4027         *)
4028             optname="${opt%%=*}"
4029             optname="${optname#--}"
4030             optname=$(echo "$optname" | sed 's/-/_/g')
4031             if is_in $optname $CMDLINE_SET; then
4032                 eval $optname='$optval'
4033             elif is_in $optname $CMDLINE_APPEND; then
4034                 append $optname "$optval"
4035             else
4036                 die_unknown $opt
4037             fi
4038         ;;
4039     esac
4040 done
4041
4042 for e in $env; do
4043     eval "export $e"
4044 done
4045
4046 if disabled autodetect; then
4047
4048     # Unless iconv is explicitely disabled by the user, we still want to probe
4049     # for the iconv from the libc.
4050     disabled iconv || enable libc_iconv
4051
4052     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
4053     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
4054 fi
4055 # Mark specifically enabled, but normally autodetected libraries as requested.
4056 for lib in $AUTODETECT_LIBS; do
4057     enabled $lib && request $lib
4058 done
4059 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
4060 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
4061 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
4062
4063 disabled logging && logfile=/dev/null
4064
4065 # command line configuration sanity checks
4066
4067 # we need to build at least one lib type
4068 if ! enabled_any static shared; then
4069     cat <<EOF
4070 At least one library type must be built.
4071 Specify --enable-static to build the static libraries or --enable-shared to
4072 build the shared libraries as well. To only build the shared libraries specify
4073 --disable-static in addition to --enable-shared.
4074 EOF
4075     exit 1
4076 fi
4077
4078 die_license_disabled() {
4079     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
4080 }
4081
4082 die_license_disabled_gpl() {
4083     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
4084 }
4085
4086 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
4087 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
4088
4089 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
4090 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
4091
4092 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4093
4094 if enabled nonfree; then
4095     license="nonfree and unredistributable"
4096 elif enabled gplv3; then
4097     license="GPL version 3 or later"
4098 elif enabled lgplv3; then
4099     license="LGPL version 3 or later"
4100 elif enabled gpl; then
4101     license="GPL version 2 or later"
4102 else
4103     license="LGPL version 2.1 or later"
4104 fi
4105
4106 enabled_all gnutls openssl &&
4107     die "GnuTLS and OpenSSL must not be enabled at the same time."
4108
4109 enabled_all gnutls mbedtls &&
4110     die "GnuTLS and mbedTLS must not be enabled at the same time."
4111
4112 enabled_all openssl mbedtls &&
4113     die "OpenSSL and mbedTLS must not be enabled at the same time."
4114
4115 # Disable all the library-specific components if the library itself
4116 # is disabled, see AVCODEC_LIST and following _LIST variables.
4117
4118 disable_components(){
4119     disabled ${1} && disable $(
4120         eval components="\$$(toupper ${1})_COMPONENTS"
4121         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
4122     )
4123 }
4124
4125 map 'disable_components $v' $LIBRARY_LIST
4126
4127 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
4128 set >> $logfile
4129
4130 test -n "$valgrind" && toolchain="valgrind-memcheck"
4131
4132 enabled ossfuzz && ! echo $CFLAGS | grep -q -- "-fsanitize="  && ! echo $CFLAGS | grep -q -- "-fcoverage-mapping" &&{
4133     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
4134     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
4135 }
4136
4137 case "$toolchain" in
4138     *-asan)
4139         cc_default="${toolchain%-asan}"
4140         add_cflags  -fsanitize=address
4141         add_ldflags -fsanitize=address
4142     ;;
4143     *-msan)
4144         cc_default="${toolchain%-msan}"
4145         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
4146         add_ldflags -fsanitize=memory
4147     ;;
4148     *-tsan)
4149         cc_default="${toolchain%-tsan}"
4150         add_cflags  -fsanitize=thread
4151         add_ldflags -fsanitize=thread
4152         case "$toolchain" in
4153             gcc-tsan)
4154                 add_cflags  -fPIC
4155                 add_ldflags -fPIC
4156                 ;;
4157         esac
4158     ;;
4159     *-usan)
4160         cc_default="${toolchain%-usan}"
4161         add_cflags  -fsanitize=undefined
4162         add_ldflags -fsanitize=undefined
4163     ;;
4164     valgrind-*)
4165         target_exec_default="valgrind"
4166         case "$toolchain" in
4167             valgrind-massif)
4168                 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"
4169                 ;;
4170             valgrind-memcheck)
4171                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
4172                 ;;
4173         esac
4174     ;;
4175     msvc)
4176         # Check whether the current MSVC version needs the C99 converter.
4177         # From MSVC 2013 (compiler major version 18) onwards, it does actually
4178         # support enough of C99 to build ffmpeg. Default to the new
4179         # behaviour if the regexp was unable to match anything, since this
4180         # successfully parses the version number of existing supported
4181         # versions that require the converter (MSVC 2010 and 2012).
4182         cl_major_ver=$(cl.exe 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
4183         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
4184             cc_default="cl.exe"
4185             cxx_default="cl.exe"
4186         else
4187             die "Unsupported MSVC version (2013 or newer required)"
4188         fi
4189         ld_default="$source_path/compat/windows/mslink"
4190         nm_default="dumpbin.exe -symbols"
4191         ar_default="lib.exe"
4192         case "$arch" in
4193         aarch64|arm64)
4194             as_default="armasm64.exe"
4195             ;;
4196         arm*)
4197             as_default="armasm.exe"
4198             ;;
4199         esac
4200         target_os_default="win32"
4201         # Use a relative path for TMPDIR. This makes sure all the
4202         # ffconf temp files are written with a relative path, avoiding
4203         # issues with msys/win32 path conversion for MSVC parameters
4204         # such as -Fo<file> or -out:<file>.
4205         TMPDIR=.
4206     ;;
4207     icl)
4208         cc_default="icl"
4209         ld_default="xilink"
4210         nm_default="dumpbin -symbols"
4211         ar_default="xilib"
4212         target_os_default="win32"
4213         TMPDIR=.
4214     ;;
4215     gcov)
4216         add_cflags  -fprofile-arcs -ftest-coverage
4217         add_ldflags -fprofile-arcs -ftest-coverage
4218     ;;
4219     llvm-cov)
4220         add_cflags -fprofile-arcs -ftest-coverage
4221         add_ldflags --coverage
4222     ;;
4223     hardened)
4224         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
4225         add_cflags   -fno-strict-overflow -fstack-protector-all
4226         add_ldflags  -Wl,-z,relro -Wl,-z,now
4227         add_cflags   -fPIE
4228         add_ldexeflags -fPIE -pie
4229     ;;
4230     ?*)
4231         die "Unknown toolchain $toolchain"
4232     ;;
4233 esac
4234
4235 if test -n "$cross_prefix"; then
4236     test -n "$arch" && test -n "$target_os" ||
4237         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
4238     enable cross_compile
4239 fi
4240
4241 set_default target_os
4242 if test "$target_os" = android; then
4243     cc_default="clang"
4244 fi
4245
4246 ar_default="${cross_prefix}${ar_default}"
4247 cc_default="${cross_prefix}${cc_default}"
4248 cxx_default="${cross_prefix}${cxx_default}"
4249 nm_default="${cross_prefix}${nm_default}"
4250 pkg_config_default="${cross_prefix}${pkg_config_default}"
4251 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
4252     ranlib_default="${cross_prefix}${ranlib_default} -D"
4253 else
4254     ranlib_default="${cross_prefix}${ranlib_default}"
4255 fi
4256 strip_default="${cross_prefix}${strip_default}"
4257 windres_default="${cross_prefix}${windres_default}"
4258
4259 sysinclude_default="${sysroot}/usr/include"
4260
4261 if enabled cuda_sdk; then
4262     warn "Option --enable-cuda-sdk is deprecated. Use --enable-cuda-nvcc instead."
4263     enable cuda_nvcc
4264 fi
4265
4266 if enabled cuda_nvcc; then
4267     nvcc_default="nvcc"
4268     nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
4269 else
4270     nvcc_default="clang"
4271     nvccflags_default="--cuda-gpu-arch=sm_30 -O2"
4272     NVCC_C=""
4273 fi
4274
4275 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
4276     target_exec x86asmexe nvcc
4277 enabled cross_compile || host_cc_default=$cc
4278 set_default host_cc
4279
4280 pkg_config_fail_message=""
4281 if ! $pkg_config --version >/dev/null 2>&1; then
4282     warn "$pkg_config not found, library detection may fail."
4283     pkg_config=false
4284 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
4285     pkg_config_fail_message="
4286 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
4287 fi
4288
4289 if test $doxygen != $doxygen_default && \
4290   ! $doxygen --version >/dev/null 2>&1; then
4291     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
4292 fi
4293
4294 exesuf() {
4295     case $1 in
4296         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
4297     esac
4298 }
4299
4300 EXESUF=$(exesuf $target_os)
4301 HOSTEXESUF=$(exesuf $host_os)
4302
4303 # set temporary file name
4304 : ${TMPDIR:=$TEMPDIR}
4305 : ${TMPDIR:=$TMP}
4306 : ${TMPDIR:=/tmp}
4307
4308 if [ -n "$tempprefix" ] ; then
4309     mktemp(){
4310         tmpname="$tempprefix.${HOSTNAME}.${UID}"
4311         echo "$tmpname"
4312         mkdir "$tmpname"
4313     }
4314 elif ! test_cmd mktemp -u XXXXXX; then
4315     # simple replacement for missing mktemp
4316     # NOT SAFE FOR GENERAL USE
4317     mktemp(){
4318         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
4319         echo "$tmpname"
4320         mkdir "$tmpname"
4321     }
4322 fi
4323
4324 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
4325     die "Unable to create temporary directory in $TMPDIR."
4326
4327 tmpfile(){
4328     tmp="${FFTMPDIR}/test"$2
4329     (set -C; exec > $tmp) 2> /dev/null ||
4330         die "Unable to create temporary file in $FFTMPDIR."
4331     eval $1=$tmp
4332 }
4333
4334 trap 'rm -rf -- "$FFTMPDIR"' EXIT
4335 trap 'exit 2' INT
4336
4337 tmpfile TMPASM .asm
4338 tmpfile TMPC   .c
4339 tmpfile TMPCPP .cpp
4340 tmpfile TMPE   $EXESUF
4341 tmpfile TMPH   .h
4342 tmpfile TMPM   .m
4343 tmpfile TMPCU  .cu
4344 tmpfile TMPO   .o
4345 tmpfile TMPS   .S
4346 tmpfile TMPSH  .sh
4347 tmpfile TMPV   .ver
4348
4349 unset -f mktemp
4350
4351 chmod +x $TMPE
4352
4353 # make sure we can execute files in $TMPDIR
4354 cat > $TMPSH 2>> $logfile <<EOF
4355 #! /bin/sh
4356 EOF
4357 chmod +x $TMPSH >> $logfile 2>&1
4358 if ! $TMPSH >> $logfile 2>&1; then
4359     cat <<EOF
4360 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
4361 variable to another directory and make sure that it is not mounted noexec.
4362 EOF
4363     die "Sanity test failed."
4364 fi
4365
4366 armasm_flags(){
4367     for flag; do
4368         case $flag in
4369             # Filter out MSVC cl.exe options from cflags that shouldn't
4370             # be passed to gas-preprocessor
4371             -M[TD]*)                                            ;;
4372             *)                  echo $flag                      ;;
4373         esac
4374    done
4375 }
4376
4377 cparser_flags(){
4378     for flag; do
4379         case $flag in
4380             -Wno-switch)             echo -Wno-switch-enum ;;
4381             -Wno-format-zero-length) ;;
4382             -Wdisabled-optimization) ;;
4383             -Wno-pointer-sign)       echo -Wno-other ;;
4384             *)                       echo $flag ;;
4385         esac
4386     done
4387 }
4388
4389 msvc_common_flags(){
4390     for flag; do
4391         case $flag in
4392             # In addition to specifying certain flags under the compiler
4393             # specific filters, they must be specified here as well or else the
4394             # generic catch all at the bottom will print the original flag.
4395             -Wall)                ;;
4396             -Wextra)              ;;
4397             -std=c99)             ;;
4398             # Common flags
4399             -fomit-frame-pointer) ;;
4400             -g)                   echo -Z7 ;;
4401             -fno-math-errno)      ;;
4402             -fno-common)          ;;
4403             -fno-signed-zeros)    ;;
4404             -fPIC)                ;;
4405             -mthumb)              ;;
4406             -march=*)             ;;
4407             -lz)                  echo zlib.lib ;;
4408             -lx264)               echo libx264.lib ;;
4409             -lstdc++)             ;;
4410             -l*)                  echo ${flag#-l}.lib ;;
4411             -LARGEADDRESSAWARE)   echo $flag ;;
4412             -L*)                  echo -libpath:${flag#-L} ;;
4413             *)                    echo $flag ;;
4414         esac
4415     done
4416 }
4417
4418 msvc_flags(){
4419     msvc_common_flags "$@"
4420     for flag; do
4421         case $flag in
4422             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4423                                        -wd4554 ;;
4424             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4425                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4426                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4427                                        -wd4307 \
4428                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4429         esac
4430     done
4431 }
4432
4433 icl_flags(){
4434     msvc_common_flags "$@"
4435     for flag; do
4436         case $flag in
4437             # Despite what Intel's documentation says -Wall, which is supported
4438             # on Windows, does enable remarks so disable them here.
4439             -Wall)                echo $flag -Qdiag-disable:remark ;;
4440             -std=c99)             echo -Qstd=c99 ;;
4441             -flto)                echo -ipo ;;
4442         esac
4443     done
4444 }
4445
4446 icc_flags(){
4447     for flag; do
4448         case $flag in
4449             -flto)                echo -ipo ;;
4450             *)                    echo $flag ;;
4451         esac
4452     done
4453 }
4454
4455 suncc_flags(){
4456     for flag; do
4457         case $flag in
4458             -march=*|-mcpu=*)
4459                 case "${flag#*=}" in
4460                     native)                   echo -xtarget=native       ;;
4461                     v9|niagara)               echo -xarch=sparc          ;;
4462                     ultrasparc)               echo -xarch=sparcvis       ;;
4463                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4464                     i586|pentium)             echo -xchip=pentium        ;;
4465                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4466                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4467                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4468                     pentium4*)          echo -xtarget=pentium4           ;;
4469                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4470                     *-sse3)             echo -xarch=sse3                 ;;
4471                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4472                     bonnell)                   echo -xarch=ssse3         ;;
4473                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4474                     westmere)                  echo -xtarget=westmere    ;;
4475                     silvermont)                echo -xarch=sse4_2        ;;
4476                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4477                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4478                                                echo -xarch=avx           ;;
4479                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4480                     btver1)                    echo -xarch=amdsse4a      ;;
4481                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4482                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4483                     k8|opteron|athlon64|athlon-fx)
4484                                                echo -xarch=sse2a         ;;
4485                     athlon*)                   echo -xarch=pentium_proa  ;;
4486                 esac
4487                 ;;
4488             -std=c99)             echo -xc99              ;;
4489             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4490             -fPIC)                echo -KPIC -xcode=pic32 ;;
4491             -W*,*)                echo $flag              ;;
4492             -f*-*|-W*|-mimpure-text)                      ;;
4493             -shared)              echo -G                 ;;
4494             *)                    echo $flag              ;;
4495         esac
4496     done
4497 }
4498
4499 probe_cc(){
4500     pfx=$1
4501     _cc=$2
4502     first=$3
4503
4504     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4505     unset _ld_o _ldflags _ld_lib _ld_path
4506     unset _depflags _DEPCMD _DEPFLAGS
4507     _flags_filter=echo
4508
4509     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4510         true # no-op to avoid reading stdin in following checks
4511     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4512         _type=llvm_gcc
4513         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4514         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4515         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4516         _cflags_speed='-O3'
4517         _cflags_size='-Os'
4518     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4519         _type=gcc
4520         gcc_version=$($_cc --version | head -n1)
4521         gcc_basever=$($_cc -dumpversion)
4522         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4523         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4524         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4525         case $gcc_basever in
4526             2) ;;
4527             2.*) ;;
4528             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4529         esac
4530         if [ "$first" = true ]; then
4531             case $gcc_basever in
4532                 4.2*)
4533                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4534             esac
4535         fi
4536         _cflags_speed='-O3'
4537         _cflags_size='-Os'
4538     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4539         _type=icc
4540         _ident=$($_cc --version | head -n1)
4541         _depflags='-MMD'
4542         _cflags_speed='-O3'
4543         _cflags_size='-Os'
4544         _cflags_noopt='-O1'
4545         _flags_filter=icc_flags
4546     elif $_cc -v 2>&1 | grep -q xlc; then
4547         _type=xlc
4548         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4549         _cflags_speed='-O5'
4550         _cflags_size='-O5 -qcompact'
4551     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4552         test -d "$sysroot" || die "No valid sysroot specified."
4553         _type=armcc
4554         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4555         armcc_conf="$PWD/armcc.conf"
4556         $_cc --arm_linux_configure                 \
4557              --arm_linux_config_file="$armcc_conf" \
4558              --configure_sysroot="$sysroot"        \
4559              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4560              die "Error creating armcc configuration file."
4561         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4562         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4563         as_default="${cross_prefix}gcc"
4564         _depflags='-MMD'
4565         _cflags_speed='-O3'
4566         _cflags_size='-Os'
4567     elif $_cc -v 2>&1 | grep -q clang && ! $_cc -? > /dev/null 2>&1; then
4568         _type=clang
4569         _ident=$($_cc --version 2>/dev/null | head -n1)
4570         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4571         _cflags_speed='-O3'
4572         _cflags_size='-Oz'
4573     elif $_cc -V 2>&1 | grep -q Sun; then
4574         _type=suncc
4575         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4576         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4577         _DEPFLAGS='-xM1 -xc99'
4578         _ldflags='-std=c99'
4579         _cflags_speed='-O5'
4580         _cflags_size='-O5 -xspace'
4581         _flags_filter=suncc_flags
4582     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4583         _type=pathscale
4584         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4585         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4586         _cflags_speed='-O2'
4587         _cflags_size='-Os'
4588         _flags_filter='filter_out -Wdisabled-optimization'
4589     elif $_cc -v 2>&1 | grep -q Open64; then
4590         _type=open64
4591         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4592         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4593         _cflags_speed='-O2'
4594         _cflags_size='-Os'
4595         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4596     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4597         _type=armasm
4598         _ident=$($_cc | head -n1)
4599         # 4509: "This form of conditional instruction is deprecated"
4600         _flags="-nologo -ignore 4509"
4601         _flags_filter=armasm_flags
4602     elif $_cc 2>&1 | grep -q Intel; then
4603         _type=icl
4604         _ident=$($_cc 2>&1 | head -n1)
4605         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4606         # Not only is O3 broken on 13.x+ but it is slower on all previous
4607         # versions (tested) as well.
4608         _cflags_speed="-O2"
4609         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4610         if $_cc 2>&1 | grep -q Linker; then
4611             _ld_o='-out:$@'
4612         else
4613             _ld_o='-Fe$@'
4614         fi
4615         _cc_o='-Fo$@'
4616         _cc_e='-P'
4617         _flags_filter=icl_flags
4618         _ld_lib='lib%.a'
4619         _ld_path='-libpath:'
4620         # -Qdiag-error to make icl error when seeing certain unknown arguments
4621         _flags='-nologo -Qdiag-error:4044,10157'
4622         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4623         # with MSVC which enables it by default.
4624         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4625         disable stripping
4626     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4627         # lld can emulate multiple different linkers; in ms link.exe mode,
4628         # the -? parameter gives the help output which contains an identifyable
4629         # string, while it gives an error in other modes.
4630         _type=lld-link
4631         # The link.exe mode doesn't have a switch for getting the version,
4632         # but we can force it back to gnu mode and get the version from there.
4633         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4634         _ld_o='-out:$@'
4635         _flags_filter=msvc_flags
4636         _ld_lib='lib%.a'
4637         _ld_path='-libpath:'
4638     elif $_cc -nologo- 2>&1 | grep -q Microsoft || { $_cc -v 2>&1 | grep -q clang && $_cc -? > /dev/null 2>&1; }; then
4639         _type=msvc
4640         _ident=$($_cc 2>&1 | head -n1 | tr -d '\r')
4641         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4642         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4643         _cflags_speed="-O2"
4644         _cflags_size="-O1"
4645         _cflags_noopt="-O1"
4646         if $_cc -nologo- 2>&1 | grep -q Linker; then
4647             _ld_o='-out:$@'
4648         else
4649             _ld_o='-Fe$@'
4650         fi
4651         _cc_o='-Fo$@'
4652         _cc_e='-P -Fi$@'
4653         _flags_filter=msvc_flags
4654         _ld_lib='lib%.a'
4655         _ld_path='-libpath:'
4656         _flags='-nologo'
4657         disable stripping
4658     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4659         _type=cparser
4660         _ident=$($_cc --version | head -n1)
4661         _depflags='-MMD'
4662         _cflags_speed='-O4'
4663         _cflags_size='-O2'
4664         _flags_filter=cparser_flags
4665     fi
4666
4667     eval ${pfx}_type=\$_type
4668     eval ${pfx}_ident=\$_ident
4669 }
4670
4671 set_ccvars(){
4672     eval ${1}_C=\${_cc_c-\${${1}_C}}
4673     eval ${1}_E=\${_cc_e-\${${1}_E}}
4674     eval ${1}_O=\${_cc_o-\${${1}_O}}
4675
4676     if [ -n "$_depflags" ]; then
4677         eval ${1}_DEPFLAGS=\$_depflags
4678     else
4679         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4680         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4681         eval DEP${1}FLAGS=\$_flags
4682     fi
4683 }
4684
4685 probe_cc cc "$cc" "true"
4686 cflags_filter=$_flags_filter
4687 cflags_speed=$_cflags_speed
4688 cflags_size=$_cflags_size
4689 cflags_noopt=$_cflags_noopt
4690 add_cflags $_flags $_cflags
4691 cc_ldflags=$_ldflags
4692 set_ccvars CC
4693 set_ccvars CXX
4694
4695 probe_cc hostcc "$host_cc"
4696 host_cflags_filter=$_flags_filter
4697 host_cflags_speed=$_cflags_speed
4698 add_host_cflags  $_flags $_cflags
4699 set_ccvars HOSTCC
4700
4701 test -n "$cc_type" && enable $cc_type ||
4702     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4703
4704 : ${as_default:=$cc}
4705 : ${objcc_default:=$cc}
4706 : ${dep_cc_default:=$cc}
4707 : ${ld_default:=$cc}
4708 : ${host_ld_default:=$host_cc}
4709 set_default ar as objcc dep_cc ld ln_s host_ld windres
4710
4711 probe_cc as "$as"
4712 asflags_filter=$_flags_filter
4713 add_asflags $_flags $_cflags
4714 set_ccvars AS
4715
4716 probe_cc objcc "$objcc"
4717 objcflags_filter=$_flags_filter
4718 add_objcflags $_flags $_cflags
4719 set_ccvars OBJC
4720
4721 probe_cc ld "$ld"
4722 ldflags_filter=$_flags_filter
4723 add_ldflags $_flags $_ldflags
4724 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4725 LD_O=${_ld_o-$LD_O}
4726 LD_LIB=${_ld_lib-$LD_LIB}
4727 LD_PATH=${_ld_path-$LD_PATH}
4728
4729 probe_cc hostld "$host_ld"
4730 host_ldflags_filter=$_flags_filter
4731 add_host_ldflags $_flags $_ldflags
4732 HOSTLD_O=${_ld_o-$HOSTLD_O}
4733
4734 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4735     probe_cc depcc "$dep_cc"
4736     CCDEP=${_DEPCMD:-$DEPCMD}
4737     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4738     DEPCCFLAGS=$_flags
4739 fi
4740
4741 if $ar 2>&1 | grep -q Microsoft; then
4742     arflags="-nologo"
4743     ar_o='-out:$@'
4744 elif $ar 2>&1 | grep -q "\[D\] "; then
4745     arflags="rcD"
4746     ar_o='$@'
4747 else
4748     arflags="rc"
4749     ar_o='$@'
4750 fi
4751
4752 add_cflags $extra_cflags
4753 add_cxxflags $extra_cxxflags
4754 add_objcflags $extra_objcflags
4755 add_asflags $extra_cflags
4756
4757 if test -n "$sysroot"; then
4758     case "$cc_type" in
4759         gcc|llvm_gcc|clang)
4760             add_cppflags --sysroot="$sysroot"
4761             add_ldflags --sysroot="$sysroot"
4762         ;;
4763     esac
4764 fi
4765
4766 if test "$cpu" = host; then
4767     enabled cross_compile &&
4768         die "--cpu=host makes no sense when cross-compiling."
4769
4770     case "$cc_type" in
4771         gcc|llvm_gcc)
4772             check_native(){
4773                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4774                 sed -n "/cc1.*$1=/{
4775                             s/.*$1=\\([^ ]*\\).*/\\1/
4776                             p
4777                             q
4778                         }" $TMPE
4779             }
4780             cpu=$(check_native -march || check_native -mcpu)
4781         ;;
4782         clang)
4783             check_native(){
4784                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4785                 sed -n "/cc1.*-target-cpu /{
4786                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4787                             p
4788                             q
4789                         }" $TMPE
4790             }
4791             cpu=$(check_native -march)
4792         ;;
4793     esac
4794
4795     test "${cpu:-host}" = host &&
4796         die "--cpu=host not supported with compiler $cc"
4797 fi
4798
4799 # Deal with common $arch aliases
4800 case "$arch" in
4801     aarch64|arm64)
4802         arch="aarch64"
4803     ;;
4804     arm*|iPad*|iPhone*)
4805         arch="arm"
4806     ;;
4807     mips*|IP*)
4808         case "$arch" in
4809         *el)
4810             add_cppflags -EL
4811             add_ldflags -EL
4812         ;;
4813         *eb)
4814             add_cppflags -EB
4815             add_ldflags -EB
4816         ;;
4817         esac
4818         arch="mips"
4819     ;;
4820     parisc*|hppa*)
4821         arch="parisc"
4822     ;;
4823     "Power Macintosh"|ppc*|powerpc*)
4824         arch="ppc"
4825     ;;
4826     s390|s390x)
4827         arch="s390"
4828     ;;
4829     sh4|sh)
4830         arch="sh4"
4831     ;;
4832     sun4*|sparc*)
4833         arch="sparc"
4834     ;;
4835     tilegx|tile-gx)
4836         arch="tilegx"
4837     ;;
4838     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4839         arch="x86"
4840     ;;
4841 esac
4842
4843 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4844 enable $arch
4845
4846 # Add processor-specific flags
4847 if enabled aarch64; then
4848
4849     case $cpu in
4850         armv*)
4851             cpuflags="-march=$cpu"
4852         ;;
4853         *)
4854             cpuflags="-mcpu=$cpu"
4855         ;;
4856     esac
4857
4858 elif enabled alpha; then
4859
4860     cpuflags="-mcpu=$cpu"
4861
4862 elif enabled arm; then
4863
4864     check_arm_arch() {
4865         test_cpp_condition stddef.h \
4866             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4867             $cpuflags
4868     }
4869
4870     probe_arm_arch() {
4871         if   check_arm_arch 4;        then echo armv4
4872         elif check_arm_arch 4T;       then echo armv4t
4873         elif check_arm_arch 5;        then echo armv5
4874         elif check_arm_arch 5E;       then echo armv5e
4875         elif check_arm_arch 5T;       then echo armv5t
4876         elif check_arm_arch 5TE;      then echo armv5te
4877         elif check_arm_arch 5TEJ;     then echo armv5te
4878         elif check_arm_arch 6;        then echo armv6
4879         elif check_arm_arch 6J;       then echo armv6j
4880         elif check_arm_arch 6K;       then echo armv6k
4881         elif check_arm_arch 6Z;       then echo armv6z
4882         elif check_arm_arch 6KZ;      then echo armv6zk
4883         elif check_arm_arch 6ZK;      then echo armv6zk
4884         elif check_arm_arch 6T2;      then echo armv6t2
4885         elif check_arm_arch 7;        then echo armv7
4886         elif check_arm_arch 7A  7_A;  then echo armv7-a
4887         elif check_arm_arch 7S;       then echo armv7-a
4888         elif check_arm_arch 7R  7_R;  then echo armv7-r
4889         elif check_arm_arch 7M  7_M;  then echo armv7-m
4890         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4891         elif check_arm_arch 8A  8_A;  then echo armv8-a
4892         fi
4893     }
4894
4895     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4896
4897     case $cpu in
4898         armv*)
4899             cpuflags="-march=$cpu"
4900             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4901         ;;
4902         *)
4903             cpuflags="-mcpu=$cpu"
4904             case $cpu in
4905                 cortex-a*)                               subarch=armv7a  ;;
4906                 cortex-r*)                               subarch=armv7r  ;;
4907                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4908                 arm11*)                                  subarch=armv6   ;;
4909                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4910                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4911                 *)                             subarch=$(probe_arm_arch) ;;
4912             esac
4913         ;;
4914     esac
4915
4916     case "$subarch" in
4917         armv5t*)    enable fast_clz                ;;
4918         armv[6-8]*)
4919             enable fast_clz
4920             disabled fast_unaligned || enable fast_unaligned
4921             ;;
4922     esac
4923
4924 elif enabled avr32; then
4925
4926     case $cpu in
4927         ap7[02]0[0-2])
4928             subarch="avr32_ap"
4929             cpuflags="-mpart=$cpu"
4930         ;;
4931         ap)
4932             subarch="avr32_ap"
4933             cpuflags="-march=$cpu"
4934         ;;
4935         uc3[ab]*)
4936             subarch="avr32_uc"
4937             cpuflags="-mcpu=$cpu"
4938         ;;
4939         uc)
4940             subarch="avr32_uc"
4941             cpuflags="-march=$cpu"
4942         ;;
4943     esac
4944
4945 elif enabled bfin; then
4946
4947     cpuflags="-mcpu=$cpu"
4948
4949 elif enabled mips; then
4950
4951     cpuflags="-march=$cpu"
4952
4953     if [ "$cpu" != "generic" ]; then
4954         disable mips32r2
4955         disable mips32r5
4956         disable mips64r2
4957         disable mips32r6
4958         disable mips64r6
4959         disable loongson2
4960         disable loongson3
4961
4962         case $cpu in
4963             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4964                 enable mips32r2
4965                 disable msa
4966             ;;
4967             p5600|i6400|p6600)
4968                 disable mipsdsp
4969                 disable mipsdspr2
4970             ;;
4971             loongson*)
4972                 enable loongson2
4973                 enable loongson3
4974                 enable local_aligned
4975                 enable simd_align_16
4976                 enable fast_64bit
4977                 enable fast_clz
4978                 enable fast_cmov
4979                 enable fast_unaligned
4980                 disable aligned_stack
4981                 disable mipsdsp
4982                 disable mipsdspr2
4983                 # When gcc version less than 5.3.0, add -fno-expensive-optimizations flag.
4984                 if [ $cc == gcc ]; then
4985                     gcc_version=$(gcc -dumpversion)
4986                     if [ "$(echo "$gcc_version 5.3.0" | tr " " "\n" | sort -rV | head -n 1)" == "$gcc_version" ]; then
4987                         expensive_optimization_flag=""
4988                     else
4989                         expensive_optimization_flag="-fno-expensive-optimizations"
4990                     fi
4991                 fi
4992                 case $cpu in
4993                     loongson3*)
4994                         cpuflags="-march=loongson3a -mhard-float $expensive_optimization_flag"
4995                     ;;
4996                     loongson2e)
4997                         cpuflags="-march=loongson2e -mhard-float $expensive_optimization_flag"
4998                     ;;
4999                     loongson2f)
5000                         cpuflags="-march=loongson2f -mhard-float $expensive_optimization_flag"
5001                     ;;
5002                 esac
5003             ;;
5004             *)
5005                 # Unknown CPU. Disable everything.
5006                 warn "unknown CPU. Disabling all MIPS optimizations."
5007                 disable mipsfpu
5008                 disable mipsdsp
5009                 disable mipsdspr2
5010                 disable msa
5011                 disable mmi
5012             ;;
5013         esac
5014
5015         case $cpu in
5016             24kc)
5017                 disable mipsfpu
5018                 disable mipsdsp
5019                 disable mipsdspr2
5020             ;;
5021             24kf*)
5022                 disable mipsdsp
5023                 disable mipsdspr2
5024             ;;
5025             24kec|34kc|1004kc)
5026                 disable mipsfpu
5027                 disable mipsdspr2
5028             ;;
5029             24kef*|34kf*|1004kf*)
5030                 disable mipsdspr2
5031             ;;
5032             74kc)
5033                 disable mipsfpu
5034             ;;
5035             p5600)
5036                 enable mips32r5
5037                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
5038             ;;
5039             i6400)
5040                 enable mips64r6
5041                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
5042             ;;
5043             p6600)
5044                 enable mips64r6
5045                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
5046             ;;
5047         esac
5048     else
5049         # We do not disable anything. Is up to the user to disable the unwanted features.
5050         warn 'generic cpu selected'
5051     fi
5052
5053 elif enabled ppc; then
5054
5055     disable ldbrx
5056
5057     case $(tolower $cpu) in
5058         601|ppc601|powerpc601)
5059             cpuflags="-mcpu=601"
5060             disable altivec
5061         ;;
5062         603*|ppc603*|powerpc603*)
5063             cpuflags="-mcpu=603"
5064             disable altivec
5065         ;;
5066         604*|ppc604*|powerpc604*)
5067             cpuflags="-mcpu=604"
5068             disable altivec
5069         ;;
5070         g3|75*|ppc75*|powerpc75*)
5071             cpuflags="-mcpu=750"
5072             disable altivec
5073         ;;
5074         g4|745*|ppc745*|powerpc745*)
5075             cpuflags="-mcpu=7450"
5076             disable vsx
5077         ;;
5078         74*|ppc74*|powerpc74*)
5079             cpuflags="-mcpu=7400"
5080             disable vsx
5081         ;;
5082         g5|970|ppc970|powerpc970)
5083             cpuflags="-mcpu=970"
5084             disable vsx
5085         ;;
5086         power[3-6]*)
5087             cpuflags="-mcpu=$cpu"
5088             disable vsx
5089         ;;
5090         power[7-8]*)
5091             cpuflags="-mcpu=$cpu"
5092         ;;
5093         cell)
5094             cpuflags="-mcpu=cell"
5095             enable ldbrx
5096             disable vsx
5097         ;;
5098         e500mc)
5099             cpuflags="-mcpu=e500mc"
5100             disable altivec
5101         ;;
5102         e500v2)
5103             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
5104             disable altivec
5105             disable dcbzl
5106         ;;
5107         e500)
5108             cpuflags="-mcpu=8540 -mhard-float"
5109             disable altivec
5110             disable dcbzl
5111         ;;
5112     esac
5113
5114 elif enabled sparc; then
5115
5116     case $cpu in
5117         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
5118             cpuflags="-mcpu=$cpu"
5119         ;;
5120         ultrasparc*|niagara[234])
5121             cpuflags="-mcpu=$cpu"
5122         ;;
5123     esac
5124
5125 elif enabled x86; then
5126
5127     case $cpu in
5128         i[345]86|pentium)
5129             cpuflags="-march=$cpu"
5130             disable i686
5131             disable mmx
5132         ;;
5133         # targets that do NOT support nopl and conditional mov (cmov)
5134         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
5135             cpuflags="-march=$cpu"
5136             disable i686
5137         ;;
5138         # targets that do support nopl and conditional mov (cmov)
5139         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
5140         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
5141         |amdfam10|barcelona|b[dt]ver*|znver*)
5142             cpuflags="-march=$cpu"
5143             enable i686
5144             enable fast_cmov
5145         ;;
5146         # targets that do support conditional mov but on which it's slow
5147         pentium4|pentium4m|prescott|nocona)
5148             cpuflags="-march=$cpu"
5149             enable i686
5150             disable fast_cmov
5151         ;;
5152     esac
5153
5154 fi
5155
5156 if [ "$cpu" != generic ]; then
5157     add_cflags  $cpuflags
5158     add_asflags $cpuflags
5159     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
5160 fi
5161
5162 # compiler sanity check
5163 test_exec <<EOF
5164 int main(void){ return 0; }
5165 EOF
5166 if test "$?" != 0; then
5167     echo "$cc is unable to create an executable file."
5168     if test -z "$cross_prefix" && ! enabled cross_compile ; then
5169         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
5170         echo "Only do this if you know what cross compiling means."
5171     fi
5172     die "C compiler test failed."
5173 fi
5174
5175 add_cppflags -D_ISOC99_SOURCE
5176 add_cxxflags -D__STDC_CONSTANT_MACROS
5177 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
5178
5179 # some compilers silently accept -std=c11, so we also need to check that the
5180 # version macro is defined properly
5181 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
5182     add_cflags -std=c11 ||
5183     check_cflags -std=c99
5184
5185 check_cppflags -D_FILE_OFFSET_BITS=64
5186 check_cppflags -D_LARGEFILE_SOURCE
5187
5188 add_host_cppflags -D_ISOC99_SOURCE
5189 check_host_cflags -std=c99
5190 check_host_cflags -Wall
5191 check_host_cflags $host_cflags_speed
5192
5193 check_64bit(){
5194     arch32=$1
5195     arch64=$2
5196     expr=${3:-'sizeof(void *) > 4'}
5197     test_code cc "" "int test[2*($expr) - 1]" &&
5198         subarch=$arch64 || subarch=$arch32
5199     enable $subarch
5200 }
5201
5202 case "$arch" in
5203     aarch64|alpha|ia64)
5204         enabled shared && enable_weak pic
5205     ;;
5206     mips)
5207         check_64bit mips mips64 '_MIPS_SIM > 1'
5208         enabled shared && enable_weak pic
5209     ;;
5210     parisc)
5211         check_64bit parisc parisc64
5212         enabled shared && enable_weak pic
5213     ;;
5214     ppc)
5215         check_64bit ppc ppc64
5216         enabled shared && enable_weak pic
5217     ;;
5218     s390)
5219         check_64bit s390 s390x
5220         enabled shared && enable_weak pic
5221     ;;
5222     sparc)
5223         check_64bit sparc sparc64
5224         enabled shared && enable_weak pic
5225     ;;
5226     x86)
5227         check_64bit x86_32 x86_64
5228         # Treat x32 as x64 for now. Note it also needs pic if shared
5229         test "$subarch" = "x86_32" && test_cpp_condition stddef.h 'defined(__x86_64__)' &&
5230             subarch=x86_64 && enable x86_64 && disable x86_32
5231         if enabled x86_64; then
5232             enabled shared && enable_weak pic
5233             objformat=elf64
5234         fi
5235     ;;
5236 esac
5237
5238 # OS specific
5239 case $target_os in
5240     aix)
5241         SHFLAGS=-shared
5242         add_cppflags '-I\$(SRC_PATH)/compat/aix'
5243         enabled shared && add_ldflags -Wl,-brtl
5244         arflags='-Xany -r -c'
5245         striptype=""
5246         ;;
5247     android)
5248         disable symver
5249         enable section_data_rel_ro
5250         add_cflags -fPIE
5251         add_ldexeflags -fPIE -pie
5252         SLIB_INSTALL_NAME='$(SLIBNAME)'
5253         SLIB_INSTALL_LINKS=
5254         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
5255         ;;
5256     haiku)
5257         prefix_default="/boot/common"
5258         network_extralibs="-lnetwork"
5259         host_extralibs=
5260         ;;
5261     sunos)
5262         SHFLAGS='-shared -Wl,-h,$$(@F)'
5263         enabled x86 && append SHFLAGS -mimpure-text
5264         network_extralibs="-lsocket -lnsl"
5265         add_cppflags -D__EXTENSIONS__
5266         # When using suncc to build, the Solaris linker will mark
5267         # an executable with each instruction set encountered by
5268         # the Solaris assembler.  As our libraries contain their own
5269         # guards for processor-specific code, instead suppress
5270         # generation of the HWCAPS ELF section on Solaris x86 only.
5271         enabled_all suncc x86 &&
5272             echo "hwcap_1 = OVERRIDE;" > mapfile &&
5273             add_ldflags -Wl,-M,mapfile
5274         nm_default='nm -P -g'
5275         striptype=""
5276         version_script='-M'
5277         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
5278         ;;
5279     netbsd)
5280         disable symver
5281         oss_indev_extralibs="-lossaudio"
5282         oss_outdev_extralibs="-lossaudio"
5283         enabled gcc || check_ldflags -Wl,-zmuldefs
5284         ;;
5285     openbsd|bitrig)
5286         disable symver
5287         striptype=""
5288         SHFLAGS='-shared'
5289         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
5290         SLIB_INSTALL_LINKS=
5291         oss_indev_extralibs="-lossaudio"
5292         oss_outdev_extralibs="-lossaudio"
5293         ;;
5294     dragonfly)
5295         disable symver
5296         ;;
5297     freebsd)
5298         ;;
5299     bsd/os)
5300         add_extralibs -lpoll -lgnugetopt
5301         strip="strip -d"
5302         ;;
5303     darwin)
5304         enabled ppc && add_asflags -force_cpusubtype_ALL
5305         install_name_dir_default='$(SHLIBDIR)'
5306         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
5307         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
5308         strip="${strip} -x"
5309         add_ldflags -Wl,-dynamic,-search_paths_first
5310         check_cflags -Werror=partial-availability
5311         SLIBSUF=".dylib"
5312         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
5313         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
5314         enabled x86_64 && objformat="macho64" || objformat="macho32"
5315         enabled_any pic shared x86_64 ||
5316             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
5317         check_headers dispatch/dispatch.h &&
5318             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
5319         if test -n "$sysroot"; then
5320             is_in -isysroot $cc $CPPFLAGS $CFLAGS || check_cppflags -isysroot $sysroot
5321             is_in -isysroot $ld $LDFLAGS          || check_ldflags  -isysroot $sysroot
5322         fi
5323         version_script='-exported_symbols_list'
5324         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
5325         ;;
5326     msys*)
5327         die "Native MSYS builds are discouraged, please use the MINGW environment."
5328         ;;
5329     mingw32*|mingw64*)
5330         target_os=mingw32
5331         LIBTARGET=i386
5332         if enabled x86_64; then
5333             LIBTARGET="i386:x86-64"
5334         elif enabled arm; then
5335             LIBTARGET="arm"
5336         elif enabled aarch64; then
5337             LIBTARGET="arm64"
5338         fi
5339         if enabled shared; then
5340             # Cannot build both shared and static libs when using dllimport.
5341             disable static
5342         fi
5343         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5344         enabled x86_32 && check_ldflags -Wl,--large-address-aware
5345         shlibdir_default="$bindir_default"
5346         SLIBPREF=""
5347         SLIBSUF=".dll"
5348         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5349         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5350         if test_cmd lib.exe -list; then
5351             SLIB_EXTRA_CMD=-'lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5352             if enabled x86_64; then
5353                 LIBTARGET=x64
5354             fi
5355         else
5356             SLIB_EXTRA_CMD=-'$(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
5357         fi
5358         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5359         SLIB_INSTALL_LINKS=
5360         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5361         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5362         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" AR="$(AR_CMD)" NM="$(NM_CMD)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5363         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--disable-auto-image-base $$(@:$(SLIBSUF)=.def)'
5364         enabled x86_64 && objformat="win64" || objformat="win32"
5365         dlltool="${cross_prefix}dlltool"
5366         ranlib=:
5367         enable dos_paths
5368         check_ldflags -Wl,--nxcompat,--dynamicbase
5369         # Lets work around some stupidity in binutils.
5370         # ld will strip relocations from executables even though we need them
5371         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
5372         # however ld then forgets what the entry point should be (oops) so we
5373         # have to manually (re)set it.
5374         if enabled x86_32; then
5375             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
5376         elif enabled x86_64; then
5377             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
5378             check_ldflags -Wl,--high-entropy-va # binutils 2.25
5379             # Set image base >4GB for extra entropy with HEASLR
5380             add_ldexeflags -Wl,--image-base,0x140000000
5381             append SHFLAGS -Wl,--image-base,0x180000000
5382         fi
5383         ;;
5384     win32|win64)
5385         disable symver
5386         if enabled shared; then
5387             # Link to the import library instead of the normal static library
5388             # for shared libs.
5389             LD_LIB='%.lib'
5390             # Cannot build both shared and static libs with MSVC or icl.
5391             disable static
5392         fi
5393         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
5394         shlibdir_default="$bindir_default"
5395         SLIBPREF=""
5396         SLIBSUF=".dll"
5397         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5398         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5399         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5400         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5401         SLIB_INSTALL_LINKS=
5402         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5403         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5404         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5405         enabled x86_64 && objformat="win64" || objformat="win32"
5406         ranlib=:
5407         enable dos_paths
5408         ;;
5409     cygwin*)
5410         target_os=cygwin
5411         shlibdir_default="$bindir_default"
5412         SLIBPREF="cyg"
5413         SLIBSUF=".dll"
5414         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5415         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5416         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5417         SLIB_INSTALL_LINKS=
5418         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
5419         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
5420         enabled x86_64 && objformat="win64" || objformat="win32"
5421         enable dos_paths
5422         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5423         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5424         ;;
5425     *-dos|freedos|opendos)
5426         network_extralibs="-lsocket"
5427         objformat="coff"
5428         enable dos_paths
5429         ;;
5430     linux)
5431         enable section_data_rel_ro
5432         enabled_any arm aarch64 && enable_weak linux_perf
5433         ;;
5434     irix*)
5435         target_os=irix
5436         ranlib="echo ignoring ranlib"
5437         ;;
5438     os/2*)
5439         strip="lxlite -CS"
5440         striptype=""
5441         objformat="aout"
5442         add_cppflags -D_GNU_SOURCE
5443         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
5444         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
5445         LIBSUF="_s.a"
5446         SLIBPREF=""
5447         SLIBSUF=".dll"
5448         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5449         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
5450         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
5451             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
5452             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
5453             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
5454             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
5455         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
5456             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
5457         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5458         SLIB_INSTALL_LINKS=
5459         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
5460         enable dos_paths
5461         enable_weak os2threads
5462         ;;
5463     gnu/kfreebsd)
5464         add_cppflags -D_BSD_SOURCE
5465         ;;
5466     gnu)
5467         ;;
5468     qnx)
5469         add_cppflags -D_QNX_SOURCE
5470         network_extralibs="-lsocket"
5471         ;;
5472     symbian)
5473         SLIBSUF=".dll"
5474         enable dos_paths
5475         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
5476         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
5477         add_ldflags -Wl,--target1-abs,--no-undefined \
5478                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
5479                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
5480         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
5481                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
5482                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
5483         ;;
5484     minix)
5485         ;;
5486     none)
5487         ;;
5488     *)
5489         die "Unknown OS '$target_os'."
5490         ;;
5491 esac
5492
5493 # test if creating links works
5494 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5495 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5496 mkdir "$link_dest"
5497 $ln_s "$link_dest" "$link_name"
5498 touch "$link_dest/test_file"
5499 if [ "$source_path" != "." ] && [ "$source_path" != "src" ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5500     # create link to source path
5501     [ -e src ] && rm src
5502     $ln_s "$source_path" src
5503     source_link=src
5504 else
5505     # creating directory links doesn't work
5506     # fall back to using the full source path
5507     source_link="$source_path"
5508 fi
5509 # cleanup
5510 rm -r "$link_dest"
5511 rm -r "$link_name"
5512
5513 # determine libc flavour
5514
5515 probe_libc(){
5516     pfx=$1
5517     pfx_no_=${pfx%_}
5518     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5519     if test_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5520         eval ${pfx}libc_type=uclibc
5521         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5522     elif test_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5523         eval ${pfx}libc_type=glibc
5524         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5525     # MinGW headers can be installed on Cygwin, so check for newlib first.
5526     elif test_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5527         eval ${pfx}libc_type=newlib
5528         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
5529     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5530     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5531         eval ${pfx}libc_type=mingw64
5532         if test_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5533             add_compat msvcrt/snprintf.o
5534             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5535         fi
5536         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5537         eval test \$${pfx_no_}cc_type = "gcc" &&
5538             add_${pfx}cppflags -D__printf__=__gnu_printf__
5539         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5540             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5541         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5542     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5543          test_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5544         eval ${pfx}libc_type=mingw32
5545         test_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5546             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5547             die "ERROR: MinGW32 runtime version must be >= 3.15."
5548         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5549         test_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
5550             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5551         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5552             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5553         eval test \$${pfx_no_}cc_type = "gcc" &&
5554             add_${pfx}cppflags -D__printf__=__gnu_printf__
5555         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5556     elif test_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5557         eval ${pfx}libc_type=msvcrt
5558         if test_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5559             if [ "$pfx" = host_ ]; then
5560                 add_host_cppflags -Dsnprintf=_snprintf
5561             else
5562                 add_compat strtod.o strtod=avpriv_strtod
5563                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5564                                              _snprintf=avpriv_snprintf  \
5565                                              vsnprintf=avpriv_vsnprintf
5566             fi
5567         fi
5568         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5569         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5570         # 0x601 by default unless something else is set by the user.
5571         # This can easily lead to us detecting functions only present
5572         # in such new versions and producing binaries requiring windows 7.0.
5573         # Therefore explicitly set the default to Vista unless the user has
5574         # set something else on the command line.
5575         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5576         # family. For these cases, configure is free to use any functions
5577         # found in the SDK headers by default. (Alternatively, we could force
5578         # _WIN32_WINNT to 0x0602 in that case.)
5579         test_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5580             { test_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0600; }
5581 #ifdef WINAPI_FAMILY
5582 #include <winapifamily.h>
5583 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5584 #error not desktop
5585 #endif
5586 #endif
5587 EOF
5588         if [ "$pfx" = "" ]; then
5589             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5590             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5591         fi
5592     elif test_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5593         eval ${pfx}libc_type=klibc
5594     elif test_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5595         eval ${pfx}libc_type=bionic
5596     elif test_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5597         eval ${pfx}libc_type=solaris
5598         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5599     elif test_${pfx}cpp_condition sys/version.h "defined __DJGPP__"; then
5600         eval ${pfx}libc_type=djgpp
5601         add_cppflags -U__STRICT_ANSI__
5602         add_cflags "-include $source_path/compat/djgpp/math.h"
5603         add_compat djgpp/math.o
5604     fi
5605     test_${pfx}cc <<EOF
5606 #include <time.h>
5607 void *v = localtime_r;
5608 EOF
5609 test "$?" != 0 && test_${pfx}cc -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 <<EOF && add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5610 #include <time.h>
5611 void *v = localtime_r;
5612 EOF
5613
5614     eval test -n "\${${pfx}libc_type}" && enable ${pfx}libc_${libc_type}
5615 }
5616
5617 probe_libc
5618 probe_libc host_
5619
5620 # hacks for compiler/libc/os combinations
5621
5622 case $libc_type in
5623     bionic)
5624         add_compat strtod.o strtod=avpriv_strtod
5625         ;;
5626 esac
5627
5628 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5629     add_cppflags '-I\$(SRC_PATH)/compat/float'
5630
5631 test_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5632
5633 set_default libdir
5634 : ${shlibdir_default:="$libdir"}
5635 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5636
5637 set_default $PATHS_LIST
5638 set_default nm
5639
5640 disabled optimizations || enabled ossfuzz || check_cflags -fomit-frame-pointer
5641
5642 enable_weak_pic() {
5643     disabled pic && return
5644     enable pic
5645     add_cppflags -DPIC
5646     case "$target_os" in
5647     mingw*|cygwin*|win*)
5648         ;;
5649     *)
5650         add_cflags -fPIC
5651         add_asflags -fPIC
5652         ;;
5653     esac
5654 }
5655
5656 enabled pic && enable_weak_pic
5657
5658 test_cc <<EOF || die "Symbol mangling check failed."
5659 int ff_extern;
5660 EOF
5661 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5662 extern_prefix=${sym%%ff_extern*}
5663
5664 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
5665
5666 for restrict_keyword in restrict __restrict__ __restrict ""; do
5667     test_code cc "" "char * $restrict_keyword p" && break
5668 done
5669
5670 check_cc pragma_deprecated "" '_Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"")'
5671
5672 # The global variable ensures the bits appear unchanged in the object file.
5673 test_cc <<EOF || die "endian test failed"
5674 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5675 EOF
5676 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5677
5678 check_cc const_nan math.h "struct { double d; } static const bar[] = { { NAN } }"
5679
5680 if ! enabled ppc64 || enabled bigendian; then
5681     disable vsx
5682 fi
5683
5684 check_gas() {
5685     log "check_gas using '$as' as AS"
5686     # :vararg is used on aarch64, arm and ppc altivec
5687     check_as vararg "
5688 .macro m n, y:vararg=0
5689 \n: .int \y
5690 .endm
5691 m x" || return 1
5692     # .altmacro is only used in arm asm
5693     ! enabled arm || check_as gnu_as ".altmacro"
5694 }
5695
5696 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5697     nogas=:
5698     enabled_any arm aarch64 && nogas=die
5699     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5700     as_noop=-v
5701
5702     case $as_type in
5703         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5704         gcc)  gaspp_as_type=gas ;;
5705         *)    gaspp_as_type=$as_type ;;
5706     esac
5707
5708     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5709
5710     test "${as#*gas-preprocessor.pl}" != "$as" ||
5711     test_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5712         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5713
5714     if ! check_gas ; then
5715         as=${gas:=$as}
5716         check_gas || \
5717             $nogas "GNU assembler not found, install/update gas-preprocessor"
5718     fi
5719
5720     check_as as_func ".func test
5721                       .endfunc"
5722 fi
5723
5724 check_inline_asm inline_asm_labels '"1:\n"'
5725
5726 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5727
5728 if enabled aarch64; then
5729     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5730     # internal assembler in clang 3.3 does not support this instruction
5731     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5732     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5733
5734     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5735
5736 elif enabled alpha; then
5737
5738     check_cflags -mieee
5739
5740 elif enabled arm; then
5741
5742     enabled msvc && check_cpp_condition thumb stddef.h "defined _M_ARMT"
5743     test_cpp_condition stddef.h "defined __thumb__" && test_cc <<EOF && enable_weak thumb
5744 float func(float a, float b){ return a+b; }
5745 EOF
5746     enabled thumb && check_cflags -mthumb || check_cflags -marm
5747
5748     if check_cpp_condition vfp_args stddef.h "defined __ARM_PCS_VFP"; then
5749         :
5750     elif check_cpp_condition vfp_args stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5751         :
5752     elif ! test_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5753         case "${cross_prefix:-$cc}" in
5754             *hardfloat*) enable vfp_args; fpabi=vfp ;;
5755             *) check_ld "cc" vfp_args <<EOF && fpabi=vfp || fpabi=soft ;;
5756 __asm__ (".eabi_attribute 28, 1");
5757 int main(void) { return 0; }
5758 EOF
5759         esac
5760         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5761     fi
5762
5763     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5764     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5765     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5766     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5767     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5768     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5769     enabled setend  && check_insn setend  'setend be'
5770
5771     [ $target_os = linux ] || [ $target_os = android ] ||
5772         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5773             $ARCH_EXT_LIST_ARM
5774
5775     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5776
5777     check_as as_arch_directive ".arch armv7-a"
5778     check_as as_dn_directive   "ra .dn d0.i16"
5779     check_as as_fpu_directive  ".fpu neon"
5780
5781     # llvm's integrated assembler supports .object_arch from llvm 3.5
5782     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
5783         check_as as_object_arch ".object_arch armv4"
5784
5785     # MS armasm fails to assemble our PIC constructs
5786     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5787
5788 elif enabled mips; then
5789
5790     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5791     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5792     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5793
5794     # Enable minimum ISA based on selected options
5795     if enabled mips64; then
5796         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5797         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5798         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5799     else
5800         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5801         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5802         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5803         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5804     fi
5805
5806     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5807     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5808     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_headers msa.h || disable msa
5809     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5810     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5811     enabled msa && enabled msa2 && check_inline_asm_flags msa2 '"nxbits.any.b $w0, $w0"' '-mmsa2' && check_headers msa2.h || disable msa2
5812
5813     if enabled bigendian && enabled msa; then
5814         disable msa
5815     fi
5816
5817 elif enabled parisc; then
5818
5819     if enabled gcc; then
5820         case $($cc -dumpversion) in
5821             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5822         esac
5823     fi
5824
5825 elif enabled ppc; then
5826
5827     enable local_aligned
5828
5829     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5830     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5831     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5832     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5833
5834     if enabled altivec; then
5835         check_cflags -maltivec -mabi=altivec
5836
5837         # check if our compiler supports Motorola AltiVec C API
5838         check_cc altivec altivec.h "vector signed int v1 = (vector signed int) { 0 };
5839                                     vector signed int v2 = (vector signed int) { 1 };
5840                                     v1 = vec_add(v1, v2);"
5841
5842         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5843     fi
5844
5845     if enabled vsx; then
5846         check_cflags -mvsx &&
5847         check_cc vsx altivec.h "int v[4] = { 0 };
5848                                 vector signed int v1 = vec_vsx_ld(0, v);"
5849     fi
5850
5851     if enabled power8; then
5852         check_cpp_condition power8 "altivec.h" "defined(_ARCH_PWR8)"
5853     fi
5854
5855 elif enabled x86; then
5856
5857     check_builtin rdtsc    intrin.h   "__rdtsc()"
5858     check_builtin mm_empty mmintrin.h "_mm_empty()"
5859
5860     enable local_aligned
5861
5862     # check whether EBP is available on x86
5863     # As 'i' is stored on the stack, this program will crash
5864     # if the base pointer is used to access it because the
5865     # base pointer is cleared in the inline assembly code.
5866     check_exec_crash <<EOF && enable ebp_available
5867 volatile int i=0;
5868 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5869 return i;
5870 EOF
5871
5872     # check whether EBX is available on x86
5873     check_inline_asm ebx_available '""::"b"(0)' &&
5874         check_inline_asm ebx_available '"":::"%ebx"'
5875
5876     # check whether xmm clobbers are supported
5877     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5878
5879     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5880         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5881
5882     # check whether binutils is new enough to compile SSSE3/MMXEXT
5883     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5884     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5885
5886     probe_x86asm(){
5887         x86asmexe_probe=$1
5888         if test_cmd $x86asmexe_probe -v; then
5889             x86asmexe=$x86asmexe_probe
5890             x86asm_type=nasm
5891             x86asm_debug="-g -F dwarf"
5892             X86ASMDEP=
5893             X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
5894         elif test_cmd $x86asmexe_probe --version; then
5895             x86asmexe=$x86asmexe_probe
5896             x86asm_type=yasm
5897             x86asm_debug="-g dwarf2"
5898             X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
5899             X86ASM_DEPFLAGS=
5900         fi
5901         check_x86asm x86asm "movbe ecx, [5]"
5902     }
5903
5904     if ! disabled_any asm mmx x86asm; then
5905         disable x86asm
5906         for program in $x86asmexe nasm yasm; do
5907             probe_x86asm $program && break
5908         done
5909         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
5910         X86ASMFLAGS="-f $objformat"
5911         enabled pic               && append X86ASMFLAGS "-DPIC"
5912         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
5913         case "$objformat" in
5914             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
5915         esac
5916
5917         check_x86asm avx512_external "vmovdqa32 [eax]{k1}{z}, zmm0"
5918         check_x86asm avx2_external   "vextracti128 xmm0, ymm0, 0"
5919         check_x86asm xop_external    "vpmacsdd xmm0, xmm1, xmm2, xmm3"
5920         check_x86asm fma4_external   "vfmaddps ymm0, ymm1, ymm2, ymm3"
5921         check_x86asm cpunop          "CPU amdnop"
5922     fi
5923
5924     case "$cpu" in
5925         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5926             disable fast_clz
5927         ;;
5928     esac
5929
5930 fi
5931
5932 check_cc intrinsics_neon arm_neon.h "int16x8_t test = vdupq_n_s16(0)"
5933
5934 check_ldflags -Wl,--as-needed
5935 check_ldflags -Wl,-z,noexecstack
5936
5937 if ! disabled network; then
5938     check_func getaddrinfo $network_extralibs
5939     check_func inet_aton $network_extralibs
5940
5941     check_type netdb.h "struct addrinfo"
5942     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5943     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5944     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5945     check_type poll.h "struct pollfd"
5946     check_type netinet/sctp.h "struct sctp_event_subscribe"
5947     check_struct "sys/socket.h" "struct msghdr" msg_flags
5948     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5949     check_type netinet/in.h "struct sockaddr_in6"
5950     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5951     check_type "sys/types.h sys/socket.h" socklen_t
5952
5953     # Prefer arpa/inet.h over winsock2
5954     if check_headers arpa/inet.h ; then
5955         check_func closesocket
5956     elif check_headers winsock2.h ; then
5957         check_func_headers winsock2.h closesocket -lws2 &&
5958             network_extralibs="-lws2" ||
5959         { check_func_headers winsock2.h closesocket -lws2_32 &&
5960             network_extralibs="-lws2_32"; } || disable winsock2_h network
5961         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5962
5963         check_type ws2tcpip.h socklen_t
5964         check_type ws2tcpip.h "struct addrinfo"
5965         check_type ws2tcpip.h "struct group_source_req"
5966         check_type ws2tcpip.h "struct ip_mreq_source"
5967         check_type ws2tcpip.h "struct ipv6_mreq"
5968         check_type winsock2.h "struct pollfd"
5969         check_struct winsock2.h "struct sockaddr" sa_len
5970         check_type ws2tcpip.h "struct sockaddr_in6"
5971         check_type ws2tcpip.h "struct sockaddr_storage"
5972     else
5973         disable network
5974     fi
5975 fi
5976
5977 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5978 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5979 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5980 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5981 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5982 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5983 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5984
5985 case "$custom_allocator" in
5986     jemalloc)
5987         # jemalloc by default does not use a prefix
5988         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5989     ;;
5990     tcmalloc)
5991         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
5992         malloc_prefix=tc_
5993     ;;
5994 esac
5995
5996 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5997 check_func  ${malloc_prefix}memalign            && enable memalign
5998 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5999
6000 check_func  access
6001 check_func_headers stdlib.h arc4random
6002 check_lib   clock_gettime time.h clock_gettime || check_lib clock_gettime time.h clock_gettime -lrt
6003 check_func  fcntl
6004 check_func  fork
6005 check_func  gethrtime
6006 check_func  getopt
6007 check_func  getrusage
6008 check_func  gettimeofday
6009 check_func  isatty
6010 check_func  mkstemp
6011 check_func  mmap
6012 check_func  mprotect
6013 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
6014 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
6015 check_func  sched_getaffinity
6016 check_func  setrlimit
6017 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
6018 check_func  strerror_r
6019 check_func  sysconf
6020 check_func  sysctl
6021 check_func  usleep
6022
6023 check_func_headers conio.h kbhit
6024 check_func_headers io.h setmode
6025 check_func_headers lzo/lzo1x.h lzo1x_999_compress
6026 check_func_headers mach/mach_time.h mach_absolute_time
6027 check_func_headers stdlib.h getenv
6028 check_func_headers sys/stat.h lstat
6029
6030 check_func_headers windows.h GetProcessAffinityMask
6031 check_func_headers windows.h GetProcessTimes
6032 check_func_headers windows.h GetSystemTimeAsFileTime
6033 check_func_headers windows.h LoadLibrary
6034 check_func_headers windows.h MapViewOfFile
6035 check_func_headers windows.h PeekNamedPipe
6036 check_func_headers windows.h SetConsoleTextAttribute
6037 check_func_headers windows.h SetConsoleCtrlHandler
6038 check_func_headers windows.h Sleep
6039 check_func_headers windows.h VirtualAlloc
6040 check_func_headers glob.h glob
6041 enabled xlib &&
6042     check_lib xlib "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
6043
6044 check_headers direct.h
6045 check_headers dirent.h
6046 check_headers dxgidebug.h
6047 check_headers dxva.h
6048 check_headers dxva2api.h -D_WIN32_WINNT=0x0600
6049 check_headers io.h
6050 check_headers linux/perf_event.h
6051 check_headers libcrystalhd/libcrystalhd_if.h
6052 check_headers malloc.h
6053 check_headers net/udplite.h
6054 check_headers poll.h
6055 check_headers sys/param.h
6056 check_headers sys/resource.h
6057 check_headers sys/select.h
6058 check_headers sys/time.h
6059 check_headers sys/un.h
6060 check_headers termios.h
6061 check_headers unistd.h
6062 check_headers valgrind/valgrind.h
6063 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
6064 check_headers windows.h
6065 check_headers X11/extensions/XvMClib.h
6066 check_headers asm/types.h
6067
6068 # it seems there are versions of clang in some distros that try to use the
6069 # gcc headers, which explodes for stdatomic
6070 # so we also check that atomics actually work here
6071 check_builtin stdatomic stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0); foo += bar"
6072
6073 check_lib advapi32 "windows.h"            RegCloseKey          -ladvapi32
6074 check_lib bcrypt   "windows.h bcrypt.h"   BCryptGenRandom      -lbcrypt &&
6075     check_cpp_condition bcrypt bcrypt.h "defined BCRYPT_RNG_ALGORITHM"
6076 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
6077 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
6078 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
6079
6080 check_lib android android/native_window.h ANativeWindow_acquire -landroid
6081 check_lib mediandk "stdint.h media/NdkImage.h" AImage_delete -lmediandk
6082 check_lib camera2ndk "stdbool.h stdint.h camera/NdkCameraManager.h" ACameraManager_create -lcamera2ndk
6083
6084 enabled appkit       && check_apple_framework AppKit
6085 enabled audiotoolbox && check_apple_framework AudioToolbox
6086 enabled avfoundation && check_apple_framework AVFoundation
6087 enabled coreimage    && check_apple_framework CoreImage
6088 enabled videotoolbox && check_apple_framework VideoToolbox
6089
6090 check_apple_framework CoreFoundation
6091 check_apple_framework CoreMedia
6092 check_apple_framework CoreVideo
6093
6094 enabled avfoundation && {
6095     disable coregraphics applicationservices
6096     check_lib coregraphics        CoreGraphics/CoreGraphics.h               CGGetActiveDisplayList "-framework CoreGraphics" ||
6097     check_lib applicationservices ApplicationServices/ApplicationServices.h CGGetActiveDisplayList "-framework ApplicationServices"; }
6098
6099 enabled videotoolbox && {
6100     check_lib coreservices CoreServices/CoreServices.h UTGetOSTypeFromString "-framework CoreServices"
6101     check_func_headers CoreMedia/CMFormatDescription.h kCMVideoCodecType_HEVC "-framework CoreMedia"
6102     check_func_headers CoreVideo/CVPixelBuffer.h kCVPixelFormatType_420YpCbCr10BiPlanarVideoRange "-framework CoreVideo"
6103     check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferTransferFunction_SMPTE_ST_2084_PQ "-framework CoreVideo"
6104     check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferTransferFunction_ITU_R_2100_HLG "-framework CoreVideo"
6105     check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferTransferFunction_Linear "-framework CoreVideo"
6106 }
6107
6108 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
6109
6110 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
6111 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
6112 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
6113 check_type "windows.h d3d11.h" "ID3D11VideoContext"
6114 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
6115
6116 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
6117 check_type "vdpau/vdpau.h" "VdpPictureInfoVP9"
6118
6119 if [ -z "$nvccflags" ]; then
6120     nvccflags=$nvccflags_default
6121 fi
6122
6123 if enabled x86_64 || enabled ppc64 || enabled aarch64; then
6124     nvccflags="$nvccflags -m64"
6125 else
6126     nvccflags="$nvccflags -m32"
6127 fi
6128
6129 if enabled cuda_nvcc; then
6130     nvccflags="$nvccflags -ptx"
6131 else
6132     nvccflags="$nvccflags -S -nocudalib -nocudainc --cuda-device-only -include ${source_link}/compat/cuda/cuda_runtime.h"
6133     check_nvcc cuda_llvm
6134 fi
6135
6136 if ! disabled ffnvcodec; then
6137     ffnv_hdr_list="ffnvcodec/nvEncodeAPI.h ffnvcodec/dynlink_cuda.h ffnvcodec/dynlink_cuviddec.h ffnvcodec/dynlink_nvcuvid.h"
6138     check_pkg_config ffnvcodec "ffnvcodec >= 9.0.18.0" "$ffnv_hdr_list" "" || \
6139       check_pkg_config ffnvcodec "ffnvcodec >= 8.2.15.8 ffnvcodec < 8.3" "$ffnv_hdr_list" "" || \
6140       check_pkg_config ffnvcodec "ffnvcodec >= 8.1.24.9 ffnvcodec < 8.2" "$ffnv_hdr_list" "" || \
6141       check_pkg_config ffnvcodec "ffnvcodec >= 8.0.14.9 ffnvcodec < 8.1" "$ffnv_hdr_list" ""
6142 fi
6143
6144 check_cpp_condition winrt windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)"
6145
6146 if ! disabled w32threads && ! enabled pthreads; then
6147     check_func_headers "windows.h process.h" _beginthreadex &&
6148         check_type "windows.h" CONDITION_VARIABLE &&
6149         check_type "windows.h" INIT_ONCE &&
6150         enable w32threads || disable w32threads
6151     if ! enabled w32threads && enabled winrt; then
6152         check_func_headers "windows.h" CreateThread &&
6153             enable w32threads || disable w32threads
6154     fi
6155 fi
6156
6157 # check for some common methods of building with pthread support
6158 # do this before the optional library checks as some of them require pthreads
6159 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
6160     if check_lib pthreads pthread.h pthread_join   -pthread &&
6161        check_lib pthreads pthread.h pthread_create -pthread; then
6162         add_cflags -pthread
6163     elif check_lib pthreads pthread.h pthread_join   -pthreads &&
6164          check_lib pthreads pthread.h pthread_create -pthreads; then
6165         add_cflags -pthreads
6166     elif check_lib pthreads pthread.h pthread_join   -ldl -pthread &&
6167          check_lib pthreads pthread.h pthread_create -ldl -pthread; then
6168         add_cflags -ldl -pthread
6169     elif check_lib pthreads pthread.h pthread_join   -lpthreadGC2 &&
6170          check_lib pthreads pthread.h pthread_create -lpthreadGC2; then
6171         :
6172     elif check_lib pthreads pthread.h pthread_join   -lpthread &&
6173          check_lib pthreads pthread.h pthread_create -lpthread; then
6174         :
6175     elif check_func pthread_join && check_func pthread_create; then
6176         enable pthreads
6177     fi
6178     check_cc pthreads "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER"
6179
6180     if enabled pthreads; then
6181         check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
6182         check_func pthread_cancel $pthreads_extralibs
6183     fi
6184 fi
6185
6186 enabled  zlib && { check_pkg_config zlib zlib "zlib.h" zlibVersion ||
6187                    check_lib zlib   zlib.h      zlibVersion    -lz; }
6188 enabled bzlib && check_lib bzlib bzlib.h BZ2_bzlibVersion    -lbz2
6189 enabled  lzma && check_lib lzma   lzma.h lzma_version_number -llzma
6190
6191 # On some systems dynamic loading requires no extra linker flags
6192 check_lib libdl dlfcn.h "dlopen dlsym" || check_lib libdl dlfcn.h "dlopen dlsym" -ldl
6193
6194 check_lib libm math.h sin -lm
6195
6196 atan2f_args=2
6197 copysign_args=2
6198 hypot_args=2
6199 ldexpf_args=2
6200 powf_args=2
6201
6202 for func in $MATH_FUNCS; do
6203     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
6204 done
6205
6206 for func in $COMPLEX_FUNCS; do
6207     eval check_complexfunc $func \${${func}_args:-1}
6208 done
6209
6210 # these are off by default, so fail if requested and not available
6211 enabled cuda_nvcc         && { check_nvcc cuda_nvcc || die "ERROR: failed checking for nvcc."; }
6212 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
6213 enabled decklink          && { require_headers DeckLinkAPI.h &&
6214                                { test_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a090500" || die "ERROR: Decklink API version must be >= 10.9.5."; } }
6215 enabled frei0r            && require_headers "frei0r.h dlfcn.h"
6216 enabled gmp               && require gmp gmp.h mpz_export -lgmp
6217 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init
6218 enabled jni               && { [ $target_os = "android" ] && check_headers jni.h && enabled pthreads || die "ERROR: jni not found"; }
6219 enabled ladspa            && require_headers "ladspa.h dlfcn.h"
6220 enabled libaom            && require_pkg_config libaom "aom >= 1.0.0" aom/aom_codec.h aom_codec_version
6221 enabled libaribb24        && { check_pkg_config libaribb24 "aribb24 > 1.0.3" "aribb24/aribb24.h" arib_instance_new ||
6222                                { enabled gpl && require_pkg_config libaribb24 aribb24 "aribb24/aribb24.h" arib_instance_new; } ||
6223                                die "ERROR: libaribb24 requires version higher than 1.0.3 or --enable-gpl."; }
6224 enabled lv2               && require_pkg_config lv2 lilv-0 "lilv/lilv.h" lilv_world_new
6225 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
6226 enabled libass            && require_pkg_config libass libass ass/ass.h ass_library_init
6227 enabled libbluray         && require_pkg_config libbluray libbluray libbluray/bluray.h bd_open
6228 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
6229 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
6230                              { check_lib libcelt celt/celt.h celt_decoder_create_custom -lcelt0 ||
6231                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
6232 enabled libcaca           && require_pkg_config libcaca caca caca.h caca_create_canvas
6233 enabled libcodec2         && require libcodec2 codec2/codec2.h codec2_create -lcodec2
6234 enabled libdav1d          && require_pkg_config libdav1d "dav1d >= 0.4.0" "dav1d/dav1d.h" dav1d_version
6235 enabled libdavs2          && require_pkg_config libdavs2 "davs2 >= 1.6.0" davs2.h davs2_decoder_open
6236 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
6237 enabled libdrm            && require_pkg_config libdrm libdrm xf86drm.h drmGetVersion
6238 enabled libfdk_aac        && { check_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
6239                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
6240                                  warn "using libfdk without pkg-config"; } }
6241 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"
6242 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_extralibs
6243 enabled fontconfig        && enable libfontconfig
6244 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
6245 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
6246 enabled libfribidi        && require_pkg_config libfribidi fribidi fribidi.h fribidi_version_info
6247 enabled libgme            && { check_pkg_config libgme libgme gme/gme.h gme_new_emu ||
6248                                require libgme gme/gme.h gme_new_emu -lgme -lstdc++; }
6249 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
6250                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
6251                                done || die "ERROR: libgsm not found"; }
6252 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc $pthreads_extralibs
6253 enabled libklvanc         && require libklvanc libklvanc/vanc.h klvanc_context_create -lklvanc
6254 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
6255 enabled liblensfun        && require_pkg_config liblensfun lensfun lensfun.h lf_db_new
6256 # While it may appear that require is being used as a pkg-config
6257 # fallback for libmfx, it is actually being used to detect a different
6258 # installation route altogether.  If libmfx is installed via the Intel
6259 # Media SDK or Intel Media Server Studio, these don't come with
6260 # pkg-config support.  Instead, users should make sure that the build
6261 # can find the libraries and headers through other means.
6262 enabled libmfx            && { check_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit ||
6263                                { require libmfx "mfx/mfxvideo.h" MFXInit "-llibmfx $advapi32_extralibs" && warn "using libmfx without pkg-config"; } }
6264 if enabled libmfx; then
6265    check_cc MFX_CODEC_VP9 "mfx/mfxvp9.h mfx/mfxstructures.h" "MFX_CODEC_VP9"
6266 fi
6267
6268 enabled libmodplug        && require_pkg_config libmodplug libmodplug libmodplug/modplug.h ModPlug_Load
6269 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame $libm_extralibs
6270 enabled libmysofa         && { check_pkg_config libmysofa libmysofa mysofa.h mysofa_neighborhood_init_withstepdefine ||
6271                                require libmysofa mysofa.h mysofa_neighborhood_init_withstepdefine -lmysofa $zlib_extralibs; }
6272 enabled libnpp            && { check_lib libnpp npp.h nppGetLibVersion -lnppig -lnppicc -lnppc -lnppidei ||
6273                                check_lib libnpp npp.h nppGetLibVersion -lnppi -lnppc -lnppidei ||
6274                                die "ERROR: libnpp not found"; }
6275 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
6276 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
6277 enabled libopencv         && { check_headers opencv2/core/core_c.h &&
6278                                { check_pkg_config libopencv opencv opencv2/core/core_c.h cvCreateImageHeader ||
6279                                  require libopencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
6280                                require_pkg_config libopencv opencv opencv/cxcore.h cvCreateImageHeader; }
6281 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
6282 enabled libopenjpeg       && { check_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version ||
6283                                { require_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } }
6284 enabled libopenmpt        && require_pkg_config libopenmpt "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create -lstdc++ && append libopenmpt_extralibs "-lstdc++"
6285 enabled libopus           && {
6286     enabled libopus_decoder && {
6287         require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
6288     }
6289     enabled libopus_encoder && {
6290         require_pkg_config libopus opus opus_multistream.h opus_multistream_surround_encoder_create
6291     }
6292 }
6293 enabled libpulse          && require_pkg_config libpulse libpulse pulse/pulseaudio.h pa_context_new
6294 enabled librav1e          && require_pkg_config librav1e "rav1e >= 0.1.0" rav1e.h rav1e_context_new
6295 enabled librsvg           && require_pkg_config librsvg librsvg-2.0 librsvg-2.0/librsvg/rsvg.h rsvg_handle_render_cairo
6296 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
6297 enabled librubberband     && require_pkg_config librubberband "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new -lstdc++ && append librubberband_extralibs "-lstdc++"
6298 enabled libshine          && require_pkg_config libshine shine shine/layer3.h shine_encode_buffer
6299 enabled libsmbclient      && { check_pkg_config libsmbclient smbclient libsmbclient.h smbc_init ||
6300                                require libsmbclient libsmbclient.h smbc_init -lsmbclient; }
6301 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy -lstdc++
6302 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
6303 enabled libssh            && require_pkg_config libssh libssh libssh/sftp.h sftp_init
6304 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init
6305 enabled libsrt            && require_pkg_config libsrt "srt >= 1.3.0" srt/srt.h srt_socket
6306 enabled libtensorflow     && require libtensorflow tensorflow/c/c_api.h TF_Version -ltensorflow
6307 enabled libtesseract      && require_pkg_config libtesseract tesseract tesseract/capi.h TessBaseAPICreate
6308 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
6309 enabled libtls            && require_pkg_config libtls libtls tls.h tls_configure
6310 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
6311                              { check_lib libtwolame twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
6312                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
6313 enabled libv4l2           && require_pkg_config libv4l2 libv4l2 libv4l2.h v4l2_ioctl
6314 enabled libvidstab        && require_pkg_config libvidstab "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
6315 enabled libvmaf           && require_pkg_config libvmaf "libvmaf >= 1.3.9" libvmaf.h compute_vmaf
6316 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
6317 enabled libvorbis         && require_pkg_config libvorbis vorbis vorbis/codec.h vorbis_info_init &&
6318                              require_pkg_config libvorbisenc vorbisenc vorbis/vorbisenc.h vorbis_encode_init
6319
6320 enabled libvpx            && {
6321     enabled libvpx_vp8_decoder && {
6322         check_pkg_config libvpx_vp8_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
6323             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"
6324     }
6325     enabled libvpx_vp8_encoder && {
6326         check_pkg_config libvpx_vp8_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
6327             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"
6328     }
6329     enabled libvpx_vp9_decoder && {
6330         check_pkg_config libvpx_vp9_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
6331             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"
6332     }
6333     enabled libvpx_vp9_encoder && {
6334         check_pkg_config libvpx_vp9_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
6335             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"
6336     }
6337     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
6338         die "libvpx enabled but no supported decoders found"
6339     fi
6340 }
6341
6342 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
6343 enabled libwebp           && {
6344     enabled libwebp_encoder      && require_pkg_config libwebp "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
6345     enabled libwebp_anim_encoder && check_pkg_config libwebp_anim_encoder "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit; }
6346 enabled libx264           && { check_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode ||
6347                                { require libx264 "stdint.h x264.h" x264_encoder_encode "-lx264 $pthreads_extralibs $libm_extralibs" &&
6348                                  warn "using libx264 without pkg-config"; } } &&
6349                              require_cpp_condition libx264 x264.h "X264_BUILD >= 118" &&
6350                              check_cpp_condition libx262 x264.h "X264_MPEG2"
6351 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
6352                              require_cpp_condition libx265 x265.h "X265_BUILD >= 68"
6353 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode "-lxavs $pthreads_extralibs $libm_extralibs"
6354 enabled libxavs2          && require_pkg_config libxavs2 "xavs2 >= 1.3.0" "stdint.h xavs2.h" xavs2_api_get
6355 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
6356 enabled libzimg           && require_pkg_config libzimg "zimg >= 2.7.0" zimg.h zimg_get_api_version
6357 enabled libzmq            && require_pkg_config libzmq "libzmq >= 4.2.1" zmq.h zmq_ctx_new
6358 enabled libzvbi           && require_pkg_config libzvbi zvbi-0.2 libzvbi.h vbi_decoder_new &&
6359                              { test_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
6360                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
6361 enabled libxml2           && require_pkg_config libxml2 libxml-2.0 libxml2/libxml/xmlversion.h xmlCheckVersion
6362 enabled mbedtls           && { check_pkg_config mbedtls mbedtls mbedtls/x509_crt.h mbedtls_x509_crt_init ||
6363                                check_pkg_config mbedtls mbedtls mbedtls/ssl.h mbedtls_ssl_init ||
6364                                check_lib mbedtls mbedtls/ssl.h mbedtls_ssl_init -lmbedtls -lmbedx509 -lmbedcrypto ||
6365                                die "ERROR: mbedTLS not found"; }
6366 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
6367 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
6368                                { ! enabled cross_compile &&
6369                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
6370                                  add_ldflags -L/opt/vc/lib/ &&
6371                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
6372                                die "ERROR: mmal not found" &&
6373                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
6374 enabled openal            && { { for al_extralibs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
6375                                check_lib openal 'AL/al.h' alGetError "${al_extralibs}" && break; done } ||
6376                                die "ERROR: openal not found"; } &&
6377                              { test_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
6378                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
6379 enabled opencl            && { check_pkg_config opencl OpenCL CL/cl.h clEnqueueNDRangeKernel ||
6380                                check_lib opencl OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
6381                                check_lib opencl CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
6382                                die "ERROR: opencl not found"; } &&
6383                              { test_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
6384                                test_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
6385                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
6386 enabled opengl            && { check_lib opengl GL/glx.h glXGetProcAddress "-lGL" ||
6387                                check_lib opengl windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
6388                                check_lib opengl OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
6389                                check_lib opengl ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
6390                                die "ERROR: opengl not found."
6391                              }
6392 enabled omx_rpi           && { test_code cc OMX_Core.h OMX_IndexConfigBrcmVideoRequestIFrame ||
6393                                { ! enabled cross_compile &&
6394                                  add_cflags -isystem/opt/vc/include/IL &&
6395                                  test_code cc OMX_Core.h OMX_IndexConfigBrcmVideoRequestIFrame; } ||
6396                                die "ERROR: OpenMAX IL headers from raspberrypi/firmware not found"; } &&
6397                              enable omx
6398 enabled omx               && require_headers OMX_Core.h
6399 enabled openssl           && { check_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
6400                                check_pkg_config openssl openssl openssl/ssl.h SSL_library_init ||
6401                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
6402                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
6403                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
6404                                die "ERROR: openssl not found"; }
6405 enabled pocketsphinx      && require_pkg_config pocketsphinx pocketsphinx pocketsphinx/pocketsphinx.h ps_init
6406 enabled rkmpp             && { require_pkg_config rkmpp rockchip_mpp  rockchip/rk_mpi.h mpp_create &&
6407                                require_pkg_config rockchip_mpp "rockchip_mpp >= 1.3.7" rockchip/rk_mpi.h mpp_create &&
6408                                { enabled libdrm ||
6409                                  die "ERROR: rkmpp requires --enable-libdrm"; }
6410                              }
6411 enabled vapoursynth       && require_pkg_config vapoursynth "vapoursynth-script >= 42" VSScript.h vsscript_init
6412
6413
6414 if enabled gcrypt; then
6415     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
6416     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
6417         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
6418         gcrypt_extralibs=$("${GCRYPT_CONFIG}" --libs)
6419         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_extralibs ||
6420             die "ERROR: gcrypt not found"
6421         add_cflags $gcrypt_cflags
6422     else
6423         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
6424     fi
6425 fi
6426
6427 if enabled sdl2; then
6428     SDL2_CONFIG="${cross_prefix}sdl2-config"
6429     test_pkg_config sdl2 "sdl2 >= 2.0.1 sdl2 < 2.1.0" SDL_events.h SDL_PollEvent
6430     if disabled sdl2 && "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
6431         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
6432         sdl2_extralibs=$("${SDL2_CONFIG}" --libs)
6433         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
6434         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
6435         check_func_headers SDL_events.h SDL_PollEvent $sdl2_extralibs $sdl2_cflags &&
6436             enable sdl2
6437     fi
6438     if test $target_os = "mingw32"; then
6439         sdl2_extralibs=$(filter_out '-mwindows' $sdl2_extralibs)
6440     fi
6441 fi
6442
6443 if enabled decklink; then
6444     case $target_os in
6445         mingw32*|mingw64*|win32|win64)
6446             decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
6447             decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
6448             ;;
6449     esac
6450 fi
6451
6452 enabled securetransport &&
6453     check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
6454     check_lib securetransport "Security/SecureTransport.h Security/Security.h" "SSLCreateContext" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" ||
6455         disable securetransport
6456
6457 enabled securetransport &&
6458     check_func SecItemImport "-Wl,-framework,CoreFoundation -Wl,-framework,Security"
6459
6460 enabled schannel &&
6461     check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
6462     test_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" &&
6463     schannel_extralibs="-lsecur32" ||
6464         disable schannel
6465
6466 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
6467 enabled makeinfo \
6468     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
6469     && enable makeinfo_html || disable makeinfo_html
6470 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
6471 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
6472 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
6473 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
6474
6475 # check V4L2 codecs available in the API
6476 if enabled v4l2_m2m; then
6477     check_headers linux/fb.h
6478     check_headers linux/videodev2.h
6479     test_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6480     check_cc v4l2_m2m linux/videodev2.h "int i = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_VIDEO_M2M | V4L2_BUF_FLAG_LAST;"
6481     check_cc vc1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VC1_ANNEX_G;"
6482     check_cc mpeg1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG1;"
6483     check_cc mpeg2_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG2;"
6484     check_cc mpeg4_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG4;"
6485     check_cc hevc_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_HEVC;"
6486     check_cc h263_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H263;"
6487     check_cc h264_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H264;"
6488     check_cc vp8_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP8;"
6489     check_cc vp9_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP9;"
6490 fi
6491
6492 check_headers sys/videoio.h
6493 test_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6494
6495 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
6496 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
6497 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
6498 # w32api 3.12 had it defined wrong
6499 check_cpp_condition vfwcap_defines vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER"
6500
6501 check_type "dshow.h" IBaseFilter
6502
6503 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
6504 check_headers "dev/bktr/ioctl_meteor.h dev/bktr/ioctl_bt848.h"                   ||
6505     check_headers "machine/ioctl_meteor.h machine/ioctl_bt848.h"                 ||
6506     check_headers "dev/video/meteor/ioctl_meteor.h dev/video/bktr/ioctl_bt848.h" ||
6507     check_headers "dev/ic/bt8xx.h"
6508
6509 if check_struct sys/soundcard.h audio_buf_info bytes; then
6510     enable_sanitized sys/soundcard.h
6511 else
6512     test_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_sanitized sys/soundcard.h
6513     #include <sys/soundcard.h>
6514     audio_buf_info abc;
6515 EOF
6516 fi
6517
6518 enabled alsa && { check_pkg_config alsa alsa "alsa/asoundlib.h" snd_pcm_htimestamp ||
6519                   check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound; }
6520
6521 enabled libjack &&
6522     require_pkg_config libjack jack jack/jack.h jack_port_get_latency_range
6523
6524 enabled sndio && check_lib sndio sndio.h sio_open -lsndio
6525
6526 if enabled libcdio; then
6527     check_pkg_config libcdio libcdio_paranoia "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open ||
6528     check_pkg_config libcdio libcdio_paranoia "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open ||
6529     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6530     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6531     die "ERROR: No usable libcdio/cdparanoia found"
6532 fi
6533
6534 enabled libxcb && check_pkg_config libxcb "xcb >= 1.4" xcb/xcb.h xcb_connect ||
6535     disable libxcb_shm libxcb_shape libxcb_xfixes
6536
6537 if enabled libxcb; then
6538     enabled libxcb_shm    && check_pkg_config libxcb_shm    xcb-shm    xcb/shm.h    xcb_shm_attach
6539     enabled libxcb_shape  && check_pkg_config libxcb_shape  xcb-shape  xcb/shape.h  xcb_shape_get_rectangles
6540     enabled libxcb_xfixes && check_pkg_config libxcb_xfixes xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image
6541 fi
6542
6543 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6544
6545 # d3d11va requires linking directly to dxgi and d3d11 if not building for
6546 # the desktop api partition
6547 test_cpp <<EOF && enable uwp && d3d11va_extralibs="-ldxgi -ld3d11"
6548 #ifdef WINAPI_FAMILY
6549 #include <winapifamily.h>
6550 #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
6551 #error desktop, not uwp
6552 #else
6553 // WINAPI_FAMILY_APP, WINAPI_FAMILY_PHONE_APP => UWP
6554 #endif
6555 #else
6556 #error no family set
6557 #endif
6558 EOF
6559
6560 enabled vaapi &&
6561     check_pkg_config vaapi "libva >= 0.35.0" "va/va.h" vaInitialize
6562
6563 if enabled vaapi; then
6564     check_pkg_config vaapi_drm "libva-drm" "va/va_drm.h" vaGetDisplayDRM
6565
6566     if enabled xlib; then
6567         check_pkg_config vaapi_x11 "libva-x11" "va/va_x11.h" vaGetDisplay
6568     fi
6569
6570     check_cpp_condition vaapi_1 "va/va.h" "VA_CHECK_VERSION(1, 0, 0)"
6571
6572     check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
6573     check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
6574     check_struct "va/va.h va/va_vpp.h" "VAProcPipelineCaps" rotation_flags
6575     check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
6576     check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
6577     check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
6578     check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
6579 fi
6580
6581 if enabled_all opencl libdrm ; then
6582     check_type "CL/cl_intel.h" "clCreateImageFromFdINTEL_fn" &&
6583         enable opencl_drm_beignet
6584     check_func_headers "CL/cl_ext.h" clImportMemoryARM &&
6585         enable opencl_drm_arm
6586 fi
6587
6588 if enabled_all opencl vaapi ; then
6589     if enabled opencl_drm_beignet ; then
6590         enable opencl_vaapi_beignet
6591     else
6592         check_type "CL/cl.h CL/cl_va_api_media_sharing_intel.h" "clCreateFromVA_APIMediaSurfaceINTEL_fn" &&
6593             enable opencl_vaapi_intel_media
6594     fi
6595 fi
6596
6597 if enabled_all opencl dxva2 ; then
6598     check_type "CL/cl_dx9_media_sharing.h" cl_dx9_surface_info_khr &&
6599         enable opencl_dxva2
6600 fi
6601
6602 if enabled_all opencl d3d11va ; then
6603     check_type "CL/cl_d3d11.h" clGetDeviceIDsFromD3D11KHR_fn &&
6604         enable opencl_d3d11
6605 fi
6606
6607 enabled vdpau &&
6608     check_cpp_condition vdpau vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP"
6609
6610 enabled vdpau &&
6611     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
6612
6613 enabled crystalhd && check_lib crystalhd "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd
6614
6615 if enabled x86; then
6616     case $target_os in
6617         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6618             ;;
6619         *)
6620             disable ffnvcodec cuvid nvdec nvenc
6621             ;;
6622     esac
6623 elif enabled ppc64 && ! enabled bigendian; then
6624     case $target_os in
6625         linux)
6626             ;;
6627         *)
6628             disable ffnvcodec cuvid nvdec nvenc
6629             ;;
6630     esac
6631 else
6632     disable ffnvcodec cuvid nvdec nvenc
6633 fi
6634
6635 enabled ffnvcodec && enable cuda
6636
6637 enabled nvenc &&
6638     test_cc -I$source_path <<EOF || disable nvenc
6639 #include <ffnvcodec/nvEncodeAPI.h>
6640 NV_ENCODE_API_FUNCTION_LIST flist;
6641 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6642 int main(void) { return 0; }
6643 EOF
6644
6645 enabled amf &&
6646     check_cpp_condition amf "AMF/core/Version.h" \
6647         "(AMF_VERSION_MAJOR << 48 | AMF_VERSION_MINOR << 32 | AMF_VERSION_RELEASE << 16 | AMF_VERSION_BUILD_NUM) >= 0x0001000400090000"
6648
6649 # Funny iconv installations are not unusual, so check it after all flags have been set
6650 if enabled libc_iconv; then
6651     check_func_headers iconv.h iconv
6652 elif enabled iconv; then
6653     check_func_headers iconv.h iconv || check_lib iconv iconv.h iconv -liconv
6654 fi
6655
6656 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6657
6658 # add some useful compiler flags if supported
6659 check_cflags -Wdeclaration-after-statement
6660 check_cflags -Wall
6661 check_cflags -Wdisabled-optimization
6662 check_cflags -Wpointer-arith
6663 check_cflags -Wredundant-decls
6664 check_cflags -Wwrite-strings
6665 check_cflags -Wtype-limits
6666 check_cflags -Wundef
6667 check_cflags -Wmissing-prototypes
6668 check_cflags -Wno-pointer-to-int-cast
6669 check_cflags -Wstrict-prototypes
6670 check_cflags -Wempty-body
6671
6672 if enabled extra_warnings; then
6673     check_cflags -Wcast-qual
6674     check_cflags -Wextra
6675     check_cflags -Wpedantic
6676 fi
6677
6678 check_disable_warning(){
6679     warning_flag=-W${1#-Wno-}
6680     test_cflags $unknown_warning_flags $warning_flag && add_cflags $1
6681 }
6682
6683 test_cflags -Werror=unused-command-line-argument &&
6684     append unknown_warning_flags "-Werror=unused-command-line-argument"
6685 test_cflags -Werror=unknown-warning-option &&
6686     append unknown_warning_flags "-Werror=unknown-warning-option"
6687
6688 check_disable_warning -Wno-parentheses
6689 check_disable_warning -Wno-switch
6690 check_disable_warning -Wno-format-zero-length
6691 check_disable_warning -Wno-pointer-sign
6692 check_disable_warning -Wno-unused-const-variable
6693 check_disable_warning -Wno-bool-operation
6694 check_disable_warning -Wno-char-subscripts
6695
6696 check_disable_warning_headers(){
6697     warning_flag=-W${1#-Wno-}
6698     test_cflags $warning_flag && add_cflags_headers $1
6699 }
6700
6701 check_disable_warning_headers -Wno-deprecated-declarations
6702 check_disable_warning_headers -Wno-unused-variable
6703
6704 test_cc <<EOF && enable blocks_extension
6705 void (^block)(void);
6706 EOF
6707
6708 # add some linker flags
6709 check_ldflags -Wl,--warn-common
6710 check_ldflags -Wl,-rpath-link=:libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6711 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir && add_ldsoflags -Wl,-rpath,$libdir
6712 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6713
6714 # add some strip flags
6715 check_stripflags -x
6716
6717 enabled neon_clobber_test &&
6718     check_ldflags -Wl,--wrap,avcodec_open2              \
6719                   -Wl,--wrap,avcodec_decode_audio4      \
6720                   -Wl,--wrap,avcodec_decode_video2      \
6721                   -Wl,--wrap,avcodec_decode_subtitle2   \
6722                   -Wl,--wrap,avcodec_encode_audio2      \
6723                   -Wl,--wrap,avcodec_encode_video2      \
6724                   -Wl,--wrap,avcodec_encode_subtitle    \
6725                   -Wl,--wrap,avcodec_send_packet        \
6726                   -Wl,--wrap,avcodec_receive_packet     \
6727                   -Wl,--wrap,avcodec_send_frame         \
6728                   -Wl,--wrap,avcodec_receive_frame      \
6729                   -Wl,--wrap,swr_convert                \
6730                   -Wl,--wrap,avresample_convert ||
6731     disable neon_clobber_test
6732
6733 enabled xmm_clobber_test &&
6734     check_ldflags -Wl,--wrap,avcodec_open2              \
6735                   -Wl,--wrap,avcodec_decode_audio4      \
6736                   -Wl,--wrap,avcodec_decode_video2      \
6737                   -Wl,--wrap,avcodec_decode_subtitle2   \
6738                   -Wl,--wrap,avcodec_encode_audio2      \
6739                   -Wl,--wrap,avcodec_encode_video2      \
6740                   -Wl,--wrap,avcodec_encode_subtitle    \
6741                   -Wl,--wrap,avcodec_send_packet        \
6742                   -Wl,--wrap,avcodec_receive_packet     \
6743                   -Wl,--wrap,avcodec_send_frame         \
6744                   -Wl,--wrap,avcodec_receive_frame      \
6745                   -Wl,--wrap,swr_convert                \
6746                   -Wl,--wrap,avresample_convert         \
6747                   -Wl,--wrap,sws_scale ||
6748     disable xmm_clobber_test
6749
6750 check_ld "cc" proper_dce <<EOF
6751 extern const int array[512];
6752 static inline int func(void) { return array[0]; }
6753 int main(void) { return 0; }
6754 EOF
6755
6756 if enabled proper_dce; then
6757     echo "X { local: *; };" > $TMPV
6758     if test_ldflags -Wl,${version_script},$TMPV; then
6759         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6760         quotes='""'
6761         test_cc <<EOF && enable symver_asm_label
6762 void ff_foo(void) __asm__ ("av_foo@VERSION");
6763 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6764 EOF
6765         test_cc <<EOF && enable symver_gnu_asm
6766 __asm__(".symver ff_foo,av_foo@VERSION");
6767 void ff_foo(void) {}
6768 EOF
6769     fi
6770 fi
6771
6772 if [ -z "$optflags" ]; then
6773     if enabled small; then
6774         optflags=$cflags_size
6775     elif enabled optimizations; then
6776         optflags=$cflags_speed
6777     else
6778         optflags=$cflags_noopt
6779     fi
6780 fi
6781
6782 check_optflags(){
6783     check_cflags "$@"
6784     enabled lto && check_ldflags "$@"
6785 }
6786
6787 check_optflags $optflags
6788 check_optflags -fno-math-errno
6789 check_optflags -fno-signed-zeros
6790
6791 if enabled lto; then
6792     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6793     check_cflags  -flto
6794     check_ldflags -flto $cpuflags
6795     disable inline_asm_direct_symbol_refs
6796 fi
6797
6798 enabled ftrapv && check_cflags -ftrapv
6799
6800 test_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6801 int x;
6802 EOF
6803
6804
6805 if enabled icc; then
6806     # Just warnings, no remarks
6807     check_cflags -w1
6808     # -wd: Disable following warnings
6809     # 144, 167, 556: -Wno-pointer-sign
6810     # 188: enumerated type mixed with another type
6811     # 1292: attribute "foo" ignored
6812     # 1419: external declaration in primary source file
6813     # 10006: ignoring unknown option -fno-signed-zeros
6814     # 10148: ignoring unknown option -Wno-parentheses
6815     # 10156: ignoring option '-W'; no argument required
6816     # 13200: No EMMS instruction before call to function
6817     # 13203: No EMMS instruction before return from function
6818     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6819     # 11030: Warning unknown option --as-needed
6820     # 10156: ignoring option '-export'; no argument required
6821     check_ldflags -wd10156,11030
6822     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6823     enable ebp_available
6824     # The test above does not test linking
6825     enabled lto && disable symver_asm_label
6826     if enabled x86_32; then
6827         icc_version=$($cc -dumpversion)
6828         test ${icc_version%%.*} -ge 11 &&
6829             check_cflags -falign-stack=maintain-16-byte ||
6830             disable aligned_stack
6831     fi
6832 elif enabled gcc; then
6833     check_optflags -fno-tree-vectorize
6834     check_cflags -Werror=format-security
6835     check_cflags -Werror=implicit-function-declaration
6836     check_cflags -Werror=missing-prototypes
6837     check_cflags -Werror=return-type
6838     check_cflags -Werror=vla
6839     check_cflags -Wformat
6840     check_cflags -fdiagnostics-color=auto
6841     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6842     if enabled x86_32; then
6843         case $target_os in
6844         *bsd*)
6845             # BSDs don't guarantee a 16 byte aligned stack, but we can
6846             # request GCC to try to maintain 16 byte alignment throughout
6847             # function calls. Library entry points that might call assembly
6848             # functions align the stack. (The parameter means 2^4 bytes.)
6849             check_cflags -mpreferred-stack-boundary=4
6850             ;;
6851         esac
6852     fi
6853 elif enabled llvm_gcc; then
6854     check_cflags -mllvm -stack-alignment=16
6855 elif enabled clang; then
6856     if enabled x86_32; then
6857         # Clang doesn't support maintaining alignment without assuming the
6858         # same alignment in every function. If 16 byte alignment would be
6859         # enabled, one would also have to either add attribute_align_arg on
6860         # every single entry point into the libraries or enable -mstackrealign
6861         # (doing stack realignment in every single function).
6862         case $target_os in
6863         mingw32|win32|*bsd*)
6864             disable aligned_stack
6865             ;;
6866         *)
6867             check_cflags -mllvm -stack-alignment=16
6868             check_cflags -mstack-alignment=16
6869             ;;
6870         esac
6871     else
6872         check_cflags -mllvm -stack-alignment=16
6873         check_cflags -mstack-alignment=16
6874     fi
6875     check_cflags -Qunused-arguments
6876     check_cflags -Werror=implicit-function-declaration
6877     check_cflags -Werror=missing-prototypes
6878     check_cflags -Werror=return-type
6879 elif enabled cparser; then
6880     add_cflags -Wno-missing-variable-declarations
6881     add_cflags -Wno-empty-statement
6882 elif enabled armcc; then
6883     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6884     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6885     # 2523: use of inline assembly is deprecated
6886     add_cflags -W${armcc_opt},--diag_suppress=2523
6887     add_cflags -W${armcc_opt},--diag_suppress=1207
6888     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6889     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6890     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6891     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6892 elif enabled pathscale; then
6893     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6894     disable inline_asm
6895 elif enabled_any msvc icl; then
6896     enabled x86_32 && disable aligned_stack
6897     enabled_all x86_32 debug && add_cflags -Oy-
6898     enabled debug && add_ldflags -debug
6899     enable pragma_deprecated
6900     if enabled icl; then
6901         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6902         # (correctly) on icl 13.x.
6903         test_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6904             add_cflags -Qansi-alias
6905         # Some inline asm is not compilable in debug
6906         if enabled debug; then
6907             disable ebp_available
6908             disable ebx_available
6909         fi
6910     fi
6911     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6912     check_cpp_condition log2 crtversion.h "_VC_CRT_MAJOR_VERSION >= 12"
6913     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6914     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6915     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6916     # MSVC 2013 and newer can handle it fine.
6917     # If this declspec fails, force including stdlib.h before the restrict redefinition
6918     # happens in config.h.
6919     if [ $restrict_keyword != restrict ]; then
6920         test_cc <<EOF || add_cflags -FIstdlib.h
6921 __declspec($restrict_keyword) void *foo(int);
6922 EOF
6923     fi
6924     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6925     # Issue has been fixed in MSVC v19.00.24218.
6926     test_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6927         check_cflags -d2SSAOptimizer-
6928     # enable utf-8 source processing on VS2015 U2 and newer
6929     test_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6930         add_cflags -utf-8
6931 fi
6932
6933 for pfx in "" host_; do
6934     varname=${pfx%_}cc_type
6935     eval "type=\$$varname"
6936     if [ "$type" = "msvc" ]; then
6937         test_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6938 static inline int foo(int a) { return a; }
6939 EOF
6940     fi
6941 done
6942
6943 case $as_type in
6944     clang)
6945         add_asflags -Qunused-arguments
6946     ;;
6947 esac
6948
6949 case $ld_type in
6950     clang)
6951         check_ldflags -Qunused-arguments
6952     ;;
6953 esac
6954
6955 enable frame_thread_encoder
6956
6957 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6958
6959 check_deps $CONFIG_LIST       \
6960            $CONFIG_EXTRA      \
6961            $HAVE_LIST         \
6962            $ALL_COMPONENTS    \
6963
6964 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"
6965 enabled avresample && warn "Building with deprecated library libavresample"
6966
6967 case $target_os in
6968 haiku)
6969     disable memalign
6970     disable posix_memalign
6971     ;;
6972 *-dos|freedos|opendos)
6973     if test_cpp_condition sys/version.h "defined(__DJGPP__) && __DJGPP__ == 2 && __DJGPP_MINOR__ == 5"; then
6974         disable memalign
6975     fi
6976     ;;
6977 esac
6978
6979 flatten_extralibs(){
6980     nested_entries=
6981     list_name=$1
6982     eval list=\$${1}
6983     for entry in $list; do
6984         entry_copy=$entry
6985         resolve entry_copy
6986         flat_entries=
6987         for e in $entry_copy; do
6988             case $e in
6989                 *_extralibs) nested_entries="$nested_entries$e ";;
6990                           *) flat_entries="$flat_entries$e ";;
6991             esac
6992         done
6993         eval $entry="\$flat_entries"
6994     done
6995     append $list_name "$nested_entries"
6996
6997     resolve nested_entries
6998     if test -n "$(filter '*_extralibs' $nested_entries)"; then
6999         flatten_extralibs $list_name
7000     fi
7001 }
7002
7003 flatten_extralibs_wrapper(){
7004     list_name=$1
7005     flatten_extralibs $list_name
7006     unique $list_name
7007     resolve $list_name
7008     eval $list_name=\$\(\$ldflags_filter \$$list_name\)
7009     eval printf \''%s'\' \""\$$list_name"\"
7010 }
7011
7012 for linkunit in $LIBRARY_LIST; do
7013     unset current_extralibs
7014     eval components=\$$(toupper ${linkunit})_COMPONENTS_LIST
7015     for comp in ${components}; do
7016         enabled $comp || continue
7017         comp_extralibs="${comp}_extralibs"
7018         append current_extralibs $comp_extralibs
7019     done
7020     eval prepend ${linkunit}_extralibs $current_extralibs
7021 done
7022
7023 for linkunit in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
7024     eval ${linkunit}_extralibs=\$\(flatten_extralibs_wrapper ${linkunit}_extralibs\)
7025 done
7026
7027 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
7028
7029 for thread in $THREADS_LIST; do
7030     if enabled $thread; then
7031         test -n "$thread_type" &&
7032             die "ERROR: Only one thread type must be selected." ||
7033             thread_type="$thread"
7034     fi
7035 done
7036
7037 if disabled stdatomic; then
7038     if enabled atomics_gcc; then
7039         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
7040     elif enabled atomics_win32; then
7041         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
7042     elif enabled atomics_suncc; then
7043         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
7044     elif enabled pthreads; then
7045         add_compat atomics/pthread/stdatomic.o
7046         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
7047     else
7048         enabled threads && die "Threading is enabled, but no atomics are available"
7049         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
7050     fi
7051 fi
7052
7053 # Check if requested libraries were found.
7054 for lib in $AUTODETECT_LIBS; do
7055     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
7056 done
7057
7058 enabled zlib && add_cppflags -DZLIB_CONST
7059
7060 # conditional library dependencies, in any order
7061 enabled afftdn_filter       && prepend avfilter_deps "avcodec"
7062 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
7063 enabled afir_filter         && prepend avfilter_deps "avcodec"
7064 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
7065 enabled aresample_filter    && prepend avfilter_deps "swresample"
7066 enabled atempo_filter       && prepend avfilter_deps "avcodec"
7067 enabled bm3d_filter         && prepend avfilter_deps "avcodec"
7068 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
7069 enabled convolve_filter     && prepend avfilter_deps "avcodec"
7070 enabled deconvolve_filter   && prepend avfilter_deps "avcodec"
7071 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
7072 enabled elbg_filter         && prepend avfilter_deps "avcodec"
7073 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
7074 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
7075 enabled firequalizer_filter && prepend avfilter_deps "avcodec"
7076 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
7077 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
7078 enabled pan_filter          && prepend avfilter_deps "swresample"
7079 enabled pp_filter           && prepend avfilter_deps "postproc"
7080 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
7081 enabled resample_filter && prepend avfilter_deps "avresample"
7082 enabled sab_filter          && prepend avfilter_deps "swscale"
7083 enabled scale_filter    && prepend avfilter_deps "swscale"
7084 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
7085 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
7086 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
7087 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
7088 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
7089 enabled signature_filter    && prepend avfilter_deps "avcodec avformat"
7090 enabled smartblur_filter    && prepend avfilter_deps "swscale"
7091 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
7092 enabled spp_filter          && prepend avfilter_deps "avcodec"
7093 enabled sr_filter           && prepend avfilter_deps "avformat swscale"
7094 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
7095 enabled uspp_filter         && prepend avfilter_deps "avcodec"
7096 enabled zoompan_filter      && prepend avfilter_deps "swscale"
7097
7098 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
7099
7100 #FIXME
7101 enabled_any sdl2_outdev opengl_outdev && enabled sdl2 &&
7102     add_cflags $(filter_out '-Dmain=SDL_main' $sdl2_cflags)
7103
7104 enabled opus_decoder    && prepend avcodec_deps "swresample"
7105
7106 # reorder the items at var $1 to align with the items order at var $2 .
7107 # die if an item at $1 is not at $2 .
7108 reorder_by(){
7109     eval rb_in=\$$1
7110     eval rb_ordered=\$$2
7111
7112     for rb in $rb_in; do
7113         is_in $rb $rb_ordered || die "$rb at \$$1 is not at \$$2"
7114     done
7115
7116     rb_out=
7117     for rb in $rb_ordered; do
7118         is_in $rb $rb_in && rb_out="$rb_out$rb "
7119     done
7120     eval $1=\$rb_out
7121 }
7122
7123 # deps-expand fflib $1:  N x {append all expanded deps; unique}
7124 # within a set of N items, N expansions are enough to expose a cycle.
7125 expand_deps(){
7126     unique ${1}_deps  # required for the early break test.
7127     for dummy in $LIBRARY_LIST; do  # N iteratios
7128         eval deps=\$${1}_deps
7129         append ${1}_deps $(map 'eval echo \$${v}_deps' $deps)
7130         unique ${1}_deps
7131         eval '[ ${#deps} = ${#'${1}_deps'} ]' && break  # doesn't expand anymore
7132     done
7133
7134     eval is_in $1 \$${1}_deps && die "Dependency cycle at ${1}_deps"
7135     reorder_by ${1}_deps LIBRARY_LIST  # linking order is expected later
7136 }
7137
7138 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
7139 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
7140
7141 map 'expand_deps $v' $LIBRARY_LIST
7142
7143 if test "$quiet" != "yes"; then
7144
7145 echo "install prefix            $prefix"
7146 echo "source path               $source_path"
7147 echo "C compiler                $cc"
7148 echo "C library                 $libc_type"
7149 if test "$host_cc" != "$cc"; then
7150     echo "host C compiler           $host_cc"
7151     echo "host C library            $host_libc_type"
7152 fi
7153 echo "ARCH                      $arch ($cpu)"
7154 if test "$build_suffix" != ""; then
7155     echo "build suffix              $build_suffix"
7156 fi
7157 if test "$progs_suffix" != ""; then
7158     echo "progs suffix              $progs_suffix"
7159 fi
7160 if test "$extra_version" != ""; then
7161     echo "version string suffix     $extra_version"
7162 fi
7163 echo "big-endian                ${bigendian-no}"
7164 echo "runtime cpu detection     ${runtime_cpudetect-no}"
7165 if enabled x86; then
7166     echo "standalone assembly       ${x86asm-no}"
7167     echo "x86 assembler             ${x86asmexe}"
7168     echo "MMX enabled               ${mmx-no}"
7169     echo "MMXEXT enabled            ${mmxext-no}"
7170     echo "3DNow! enabled            ${amd3dnow-no}"
7171     echo "3DNow! extended enabled   ${amd3dnowext-no}"
7172     echo "SSE enabled               ${sse-no}"
7173     echo "SSSE3 enabled             ${ssse3-no}"
7174     echo "AESNI enabled             ${aesni-no}"
7175     echo "AVX enabled               ${avx-no}"
7176     echo "AVX2 enabled              ${avx2-no}"
7177     echo "AVX-512 enabled           ${avx512-no}"
7178     echo "XOP enabled               ${xop-no}"
7179     echo "FMA3 enabled              ${fma3-no}"
7180     echo "FMA4 enabled              ${fma4-no}"
7181     echo "i686 features enabled     ${i686-no}"
7182     echo "CMOV is fast              ${fast_cmov-no}"
7183     echo "EBX available             ${ebx_available-no}"
7184     echo "EBP available             ${ebp_available-no}"
7185 fi
7186 if enabled aarch64; then
7187     echo "NEON enabled              ${neon-no}"
7188     echo "VFP enabled               ${vfp-no}"
7189 fi
7190 if enabled arm; then
7191     echo "ARMv5TE enabled           ${armv5te-no}"
7192     echo "ARMv6 enabled             ${armv6-no}"
7193     echo "ARMv6T2 enabled           ${armv6t2-no}"
7194     echo "VFP enabled               ${vfp-no}"
7195     echo "NEON enabled              ${neon-no}"
7196     echo "THUMB enabled             ${thumb-no}"
7197 fi
7198 if enabled mips; then
7199     echo "MIPS FPU enabled          ${mipsfpu-no}"
7200     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
7201     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
7202     echo "MIPS MSA enabled          ${msa-no}"
7203     echo "MIPS MSA2 enabled         ${msa2-no}"
7204     echo "LOONGSON MMI enabled      ${mmi-no}"
7205 fi
7206 if enabled ppc; then
7207     echo "AltiVec enabled           ${altivec-no}"
7208     echo "VSX enabled               ${vsx-no}"
7209     echo "POWER8 enabled            ${power8-no}"
7210     echo "PPC 4xx optimizations     ${ppc4xx-no}"
7211     echo "dcbzl available           ${dcbzl-no}"
7212 fi
7213 echo "debug symbols             ${debug-no}"
7214 echo "strip symbols             ${stripping-no}"
7215 echo "optimize for size         ${small-no}"
7216 echo "optimizations             ${optimizations-no}"
7217 echo "static                    ${static-no}"
7218 echo "shared                    ${shared-no}"
7219 echo "postprocessing support    ${postproc-no}"
7220 echo "network support           ${network-no}"
7221 echo "threading support         ${thread_type-no}"
7222 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
7223 echo "texi2html enabled         ${texi2html-no}"
7224 echo "perl enabled              ${perl-no}"
7225 echo "pod2man enabled           ${pod2man-no}"
7226 echo "makeinfo enabled          ${makeinfo-no}"
7227 echo "makeinfo supports HTML    ${makeinfo_html-no}"
7228 test -n "$random_seed" &&
7229     echo "random seed               ${random_seed}"
7230 echo
7231
7232 echo "External libraries:"
7233 print_enabled '' $EXTERNAL_LIBRARY_LIST $EXTERNAL_AUTODETECT_LIBRARY_LIST | print_in_columns
7234 echo
7235
7236 echo "External libraries providing hardware acceleration:"
7237 print_enabled '' $HWACCEL_LIBRARY_LIST $HWACCEL_AUTODETECT_LIBRARY_LIST | print_in_columns
7238 echo
7239
7240 echo "Libraries:"
7241 print_enabled '' $LIBRARY_LIST | print_in_columns
7242 echo
7243
7244 echo "Programs:"
7245 print_enabled '' $PROGRAM_LIST | print_in_columns
7246 echo
7247
7248 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
7249     echo "Enabled ${type}s:"
7250     eval list=\$$(toupper $type)_LIST
7251     print_enabled '_*' $list | print_in_columns
7252     echo
7253 done
7254
7255 if test -n "$ignore_tests"; then
7256     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
7257     echo "Ignored FATE tests:"
7258     echo $ignore_tests | print_in_columns
7259     echo
7260 fi
7261
7262 echo "License: $license"
7263
7264 fi # test "$quiet" != "yes"
7265
7266 if test -n "$WARN_IF_GETS_DISABLED_LIST"; then
7267     for cfg in $WARN_IF_GETS_DISABLED_LIST; do
7268         if disabled $cfg; then
7269             varname=${cfg}_disable_reason
7270             eval "warn \"Disabled $cfg because \$$varname\""
7271         fi
7272     done
7273 fi
7274
7275 if test -n "$WARNINGS"; then
7276     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
7277     enabled fatal_warnings && exit 1
7278 fi
7279
7280 test -e Makefile || echo "include $source_path/Makefile" > Makefile
7281
7282 esc(){
7283     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
7284 }
7285
7286 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" > ffbuild/config.fate
7287
7288 enabled stripping || strip="echo skipping strip"
7289 enabled stripping || striptype=""
7290
7291 config_files="$TMPH ffbuild/config.mak doc/config.texi"
7292
7293 cat > ffbuild/config.mak <<EOF
7294 # Automatically generated by configure - do not modify!
7295 ifndef FFMPEG_CONFIG_MAK
7296 FFMPEG_CONFIG_MAK=1
7297 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
7298 prefix=$prefix
7299 LIBDIR=\$(DESTDIR)$libdir
7300 SHLIBDIR=\$(DESTDIR)$shlibdir
7301 INCDIR=\$(DESTDIR)$incdir
7302 BINDIR=\$(DESTDIR)$bindir
7303 DATADIR=\$(DESTDIR)$datadir
7304 DOCDIR=\$(DESTDIR)$docdir
7305 MANDIR=\$(DESTDIR)$mandir
7306 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
7307 INSTALL_NAME_DIR=$install_name_dir
7308 SRC_PATH=$source_path
7309 SRC_LINK=$source_link
7310 ifndef MAIN_MAKEFILE
7311 SRC_PATH:=\$(SRC_PATH:.%=..%)
7312 endif
7313 CC_IDENT=$cc_ident
7314 ARCH=$arch
7315 INTRINSICS=$intrinsics
7316 EXTERN_PREFIX=$extern_prefix
7317 CC=$cc
7318 CXX=$cxx
7319 AS=$as
7320 OBJCC=$objcc
7321 LD=$ld
7322 DEPCC=$dep_cc
7323 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
7324 DEPAS=$as
7325 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
7326 X86ASM=$x86asmexe
7327 DEPX86ASM=$x86asmexe
7328 DEPX86ASMFLAGS=\$(X86ASMFLAGS)
7329 AR=$ar
7330 ARFLAGS=$arflags
7331 AR_O=$ar_o
7332 AR_CMD=$ar
7333 NM_CMD=$nm
7334 RANLIB=$ranlib
7335 STRIP=$strip
7336 STRIPTYPE=$striptype
7337 NVCC=$nvcc
7338 CP=cp -p
7339 LN_S=$ln_s
7340 CPPFLAGS=$CPPFLAGS
7341 CFLAGS=$CFLAGS
7342 CXXFLAGS=$CXXFLAGS
7343 OBJCFLAGS=$OBJCFLAGS
7344 ASFLAGS=$ASFLAGS
7345 NVCCFLAGS=$nvccflags
7346 AS_C=$AS_C
7347 AS_O=$AS_O
7348 OBJCC_C=$OBJCC_C
7349 OBJCC_E=$OBJCC_E
7350 OBJCC_O=$OBJCC_O
7351 CC_C=$CC_C
7352 CC_E=$CC_E
7353 CC_O=$CC_O
7354 CXX_C=$CXX_C
7355 CXX_O=$CXX_O
7356 NVCC_C=$NVCC_C
7357 NVCC_O=$NVCC_O
7358 LD_O=$LD_O
7359 X86ASM_O=$X86ASM_O
7360 LD_LIB=$LD_LIB
7361 LD_PATH=$LD_PATH
7362 DLLTOOL=$dlltool
7363 WINDRES=$windres
7364 DEPWINDRES=$dep_cc
7365 DOXYGEN=$doxygen
7366 LDFLAGS=$LDFLAGS
7367 LDEXEFLAGS=$LDEXEFLAGS
7368 LDSOFLAGS=$LDSOFLAGS
7369 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
7370 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
7371 X86ASMFLAGS=$X86ASMFLAGS
7372 BUILDSUF=$build_suffix
7373 PROGSSUF=$progs_suffix
7374 FULLNAME=$FULLNAME
7375 LIBPREF=$LIBPREF
7376 LIBSUF=$LIBSUF
7377 LIBNAME=$LIBNAME
7378 SLIBPREF=$SLIBPREF
7379 SLIBSUF=$SLIBSUF
7380 EXESUF=$EXESUF
7381 EXTRA_VERSION=$extra_version
7382 CCDEP=$CCDEP
7383 CXXDEP=$CXXDEP
7384 CCDEP_FLAGS=$CCDEP_FLAGS
7385 ASDEP=$ASDEP
7386 ASDEP_FLAGS=$ASDEP_FLAGS
7387 X86ASMDEP=$X86ASMDEP
7388 X86ASMDEP_FLAGS=$X86ASMDEP_FLAGS
7389 CC_DEPFLAGS=$CC_DEPFLAGS
7390 AS_DEPFLAGS=$AS_DEPFLAGS
7391 X86ASM_DEPFLAGS=$X86ASM_DEPFLAGS
7392 HOSTCC=$host_cc
7393 HOSTLD=$host_ld
7394 HOSTCFLAGS=$host_cflags
7395 HOSTCPPFLAGS=$host_cppflags
7396 HOSTEXESUF=$HOSTEXESUF
7397 HOSTLDFLAGS=$host_ldflags
7398 HOSTEXTRALIBS=$host_extralibs
7399 DEPHOSTCC=$host_cc
7400 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
7401 HOSTCCDEP=$HOSTCCDEP
7402 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
7403 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
7404 HOSTCC_C=$HOSTCC_C
7405 HOSTCC_O=$HOSTCC_O
7406 HOSTLD_O=$HOSTLD_O
7407 TARGET_EXEC=$target_exec $target_exec_args
7408 TARGET_PATH=$target_path
7409 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
7410 CFLAGS-ffplay=${sdl2_cflags}
7411 CFLAGS_HEADERS=$CFLAGS_HEADERS
7412 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
7413 EXTRALIBS=$extralibs
7414 COMPAT_OBJS=$compat_objs
7415 INSTALL=$install
7416 LIBTARGET=${LIBTARGET}
7417 SLIBNAME=${SLIBNAME}
7418 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
7419 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
7420 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
7421 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
7422 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
7423 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
7424 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
7425 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
7426 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
7427 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
7428 NOREDZONE_FLAGS=$noredzone_flags
7429 LIBFUZZER_PATH=$libfuzzer_path
7430 IGNORE_TESTS=$ignore_tests
7431 EOF
7432
7433 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> ffbuild/config.mak' $LIBRARY_LIST
7434
7435 for entry in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
7436     eval echo "EXTRALIBS-${entry}=\$${entry}_extralibs" >> ffbuild/config.mak
7437 done
7438
7439 cat > $TMPH <<EOF
7440 /* Automatically generated by configure - do not modify! */
7441 #ifndef FFMPEG_CONFIG_H
7442 #define FFMPEG_CONFIG_H
7443 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
7444 #define FFMPEG_LICENSE "$(c_escape $license)"
7445 #define CONFIG_THIS_YEAR 2019
7446 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
7447 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
7448 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
7449 #define av_restrict $restrict_keyword
7450 #define EXTERN_PREFIX "${extern_prefix}"
7451 #define EXTERN_ASM ${extern_prefix}
7452 #define BUILDSUF "$build_suffix"
7453 #define SLIBSUF "$SLIBSUF"
7454 #define HAVE_MMX2 HAVE_MMXEXT
7455 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
7456 EOF
7457
7458 test -n "$assert_level" &&
7459     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
7460
7461 test -n "$malloc_prefix" &&
7462     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
7463
7464 if enabled x86asm; then
7465     append config_files $TMPASM
7466     cat > $TMPASM <<EOF
7467 ; Automatically generated by configure - do not modify!
7468 EOF
7469 fi
7470
7471 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
7472
7473
7474 mkdir -p doc
7475 mkdir -p tests
7476 mkdir -p tests/api
7477 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
7478
7479 print_config ARCH_   "$config_files" $ARCH_LIST
7480 print_config HAVE_   "$config_files" $HAVE_LIST
7481 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
7482                                      $CONFIG_EXTRA      \
7483                                      $ALL_COMPONENTS    \
7484
7485 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
7486 echo "endif # FFMPEG_CONFIG_MAK" >> ffbuild/config.mak
7487
7488 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
7489 cp_if_changed $TMPH config.h
7490 touch ffbuild/.config
7491
7492 enabled x86asm && cp_if_changed $TMPASM config.asm
7493
7494 cat > $TMPH <<EOF
7495 /* Generated by ffmpeg configure */
7496 #ifndef AVUTIL_AVCONFIG_H
7497 #define AVUTIL_AVCONFIG_H
7498 EOF
7499
7500 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
7501
7502 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
7503
7504 cp_if_changed $TMPH libavutil/avconfig.h
7505
7506 # full_filter_name_foo=vf_foo
7507 # full_filter_name_bar=asrc_bar
7508 # ...
7509 eval "$(sed -n "s/^extern AVFilter ff_\([avfsinkrc]\{2,5\}\)_\(.*\);/full_filter_name_\2=\1_\2/p" $source_path/libavfilter/allfilters.c)"
7510
7511 # generate the lists of enabled components
7512 print_enabled_components(){
7513     file=$1
7514     struct_name=$2
7515     name=$3
7516     shift 3
7517     echo "static const $struct_name * const $name[] = {" > $TMPH
7518     for c in $*; do
7519         if enabled $c; then
7520             case $name in
7521                 filter_list)
7522                     eval c=\$full_filter_name_${c%_filter}
7523                 ;;
7524                 indev_list)
7525                     c=${c%_indev}_demuxer
7526                 ;;
7527                 outdev_list)
7528                     c=${c%_outdev}_muxer
7529                 ;;
7530             esac
7531             printf "    &ff_%s,\n" $c >> $TMPH
7532         fi
7533     done
7534     if [ "$name" = "filter_list" ]; then
7535         for c in asrc_abuffer vsrc_buffer asink_abuffer vsink_buffer; do
7536             printf "    &ff_%s,\n" $c >> $TMPH
7537         done
7538     fi
7539     echo "    NULL };" >> $TMPH
7540     cp_if_changed $TMPH $file
7541 }
7542
7543 print_enabled_components libavfilter/filter_list.c AVFilter filter_list $FILTER_LIST
7544 print_enabled_components libavcodec/codec_list.c AVCodec codec_list $CODEC_LIST
7545 print_enabled_components libavcodec/parser_list.c AVCodecParser parser_list $PARSER_LIST
7546 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
7547 print_enabled_components libavformat/demuxer_list.c AVInputFormat demuxer_list $DEMUXER_LIST
7548 print_enabled_components libavformat/muxer_list.c AVOutputFormat muxer_list $MUXER_LIST
7549 print_enabled_components libavdevice/indev_list.c AVInputFormat indev_list $INDEV_LIST
7550 print_enabled_components libavdevice/outdev_list.c AVOutputFormat outdev_list $OUTDEV_LIST
7551 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
7552
7553 # Settings for pkg-config files
7554
7555 cat > $TMPH <<EOF
7556 # Automatically generated by configure - do not modify!
7557 shared=$shared
7558 build_suffix=$build_suffix
7559 prefix=$prefix
7560 libdir=$libdir
7561 incdir=$incdir
7562 rpath=$(enabled rpath && echo "-Wl,-rpath,\${libdir}")
7563 source_path=${source_path}
7564 LIBPREF=${LIBPREF}
7565 LIBSUF=${LIBSUF}
7566 extralibs_avutil="$avutil_extralibs"
7567 extralibs_avcodec="$avcodec_extralibs"
7568 extralibs_avformat="$avformat_extralibs"
7569 extralibs_avdevice="$avdevice_extralibs"
7570 extralibs_avfilter="$avfilter_extralibs"
7571 extralibs_avresample="$avresample_extralibs"
7572 extralibs_postproc="$postproc_extralibs"
7573 extralibs_swscale="$swscale_extralibs"
7574 extralibs_swresample="$swresample_extralibs"
7575 EOF
7576
7577 for lib in $LIBRARY_LIST; do
7578     lib_deps="$(eval echo \$${lib}_deps)"
7579     echo ${lib}_deps=\"$lib_deps\" >> $TMPH
7580 done
7581
7582 cp_if_changed $TMPH ffbuild/config.sh