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

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