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

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