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

   1 #!/bin/sh
   2 #
   3 # FFmpeg configure script
   4 #
   5 # Copyright (c) 2000-2002 Fabrice Bellard
   6 # Copyright (c) 2005-2008 Diego Biurrun
   7 # Copyright (c) 2005-2008 Mans Rullgard
   8 #
   9
  10 # Prevent locale nonsense from breaking basic text processing.
  11 LC_ALL=C
  12 export LC_ALL
  13
  14 # make sure we are running under a compatible shell
  15 # try to make this part work with most shells
  16
  17 try_exec(){
  18     echo "Trying shell $1"
  19     type "$1" > /dev/null 2>&1 && exec "$@"
  20 }
  21
  22 unset foo
  23 (: ${foo%%bar}) 2> /dev/null
  24 E1="$?"
  25
  26 (: ${foo?}) 2> /dev/null
  27 E2="$?"
  28
  29 if test "$E1" != 0 || test "$E2" = 0; then
  30     echo "Broken shell detected.  Trying alternatives."
  31     export FF_CONF_EXEC
  32     if test "0$FF_CONF_EXEC" -lt 1; then
  33         FF_CONF_EXEC=1
  34         try_exec bash "$0" "$@"
  35     fi
  36     if test "0$FF_CONF_EXEC" -lt 2; then
  37         FF_CONF_EXEC=2
  38         try_exec ksh "$0" "$@"
  39     fi
  40     if test "0$FF_CONF_EXEC" -lt 3; then
  41         FF_CONF_EXEC=3
  42         try_exec /usr/xpg4/bin/sh "$0" "$@"
  43     fi
  44     echo "No compatible shell script interpreter found."
  45     echo "This configure script requires a POSIX-compatible shell"
  46     echo "such as bash or ksh."
  47     echo "THIS IS NOT A BUG IN FFMPEG, DO NOT REPORT IT AS SUCH."
  48     echo "Instead, install a working POSIX-compatible shell."
  49     echo "Disabling this configure test will create a broken FFmpeg."
  50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
  51         echo "This bash version ($BASH_VERSION) is broken on your platform."
  52         echo "Upgrade to a later version if available."
  53     fi
  54     exit 1
  55 fi
  56
  57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
  58
  59 show_help(){
  60     cat <<EOF
  61 Usage: configure [options]
  62 Options: [defaults in brackets after descriptions]
  63
  64 Help options:
  65   --help                   print this message
  66   --quiet                  Suppress showing informative output
  67   --list-decoders          show all available decoders
  68   --list-encoders          show all available encoders
  69   --list-hwaccels          show all available hardware accelerators
  70   --list-demuxers          show all available demuxers
  71   --list-muxers            show all available muxers
  72   --list-parsers           show all available parsers
  73   --list-protocols         show all available protocols
  74   --list-bsfs              show all available bitstream filters
  75   --list-indevs            show all available input devices
  76   --list-outdevs           show all available output devices
  77   --list-filters           show all available filters
  78
  79 Standard options:
  80   --logfile=FILE           log tests and output to FILE [ffbuild/config.log]
  81   --disable-logging        do not log configure debug information
  82   --fatal-warnings         fail if any configure warning is generated
  83   --prefix=PREFIX          install in PREFIX [$prefix_default]
  84   --bindir=DIR             install binaries in DIR [PREFIX/bin]
  85   --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
  86   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/ffmpeg]
  87   --libdir=DIR             install libs in DIR [PREFIX/lib]
  88   --shlibdir=DIR           install shared libs in DIR [LIBDIR]
  89   --incdir=DIR             install includes in DIR [PREFIX/include]
  90   --mandir=DIR             install man page in DIR [PREFIX/share/man]
  91   --pkgconfigdir=DIR       install pkg-config files in DIR [LIBDIR/pkgconfig]
  92   --enable-rpath           use rpath to allow installing libraries in paths
  93                            not part of the dynamic linker search path
  94                            use rpath when linking programs (USE WITH CARE)
  95   --install-name-dir=DIR   Darwin directory name for installed targets
  96
  97 Licensing options:
  98   --enable-gpl             allow use of GPL code, the resulting libs
  99                            and binaries will be under GPL [no]
 100   --enable-version3        upgrade (L)GPL to version 3 [no]
 101   --enable-nonfree         allow use of nonfree code, the resulting libs
 102                            and binaries will be unredistributable [no]
 103
 104 Configuration options:
 105   --disable-static         do not build static libraries [no]
 106   --enable-shared          build shared libraries [no]
 107   --enable-small           optimize for size instead of speed
 108   --disable-runtime-cpudetect disable detecting CPU capabilities at runtime (smaller binary)
 109   --enable-gray            enable full grayscale support (slower color)
 110   --disable-swscale-alpha  disable alpha channel support in swscale
 111   --disable-all            disable building components, libraries and programs
 112   --disable-autodetect     disable automatically detected external libraries [no]
 113
 114 Program options:
 115   --disable-programs       do not build command line programs
 116   --disable-ffmpeg         disable ffmpeg build
 117   --disable-ffplay         disable ffplay build
 118   --disable-ffprobe        disable ffprobe build
 119
 120 Documentation options:
 121   --disable-doc            do not build documentation
 122   --disable-htmlpages      do not build HTML documentation pages
 123   --disable-manpages       do not build man documentation pages
 124   --disable-podpages       do not build POD documentation pages
 125   --disable-txtpages       do not build text documentation pages
 126
 127 Component options:
 128   --disable-avdevice       disable libavdevice build
 129   --disable-avcodec        disable libavcodec build
 130   --disable-avformat       disable libavformat build
 131   --disable-swresample     disable libswresample build
 132   --disable-swscale        disable libswscale build
 133   --disable-postproc       disable libpostproc build
 134   --disable-avfilter       disable libavfilter build
 135   --enable-avresample      enable libavresample build (deprecated) [no]
 136   --disable-pthreads       disable pthreads [autodetect]
 137   --disable-w32threads     disable Win32 threads [autodetect]
 138   --disable-os2threads     disable OS/2 threads [autodetect]
 139   --disable-network        disable network support [no]
 140   --disable-dct            disable DCT code
 141   --disable-dwt            disable DWT code
 142   --disable-error-resilience disable error resilience code
 143   --disable-lsp            disable LSP code
 144   --disable-lzo            disable LZO decoder code
 145   --disable-mdct           disable MDCT code
 146   --disable-rdft           disable RDFT code
 147   --disable-fft            disable FFT code
 148   --disable-faan           disable floating point AAN (I)DCT code
 149   --disable-pixelutils     disable pixel utils in libavutil
 150
 151 Individual component options:
 152   --disable-everything     disable all components listed below
 153   --disable-encoder=NAME   disable encoder NAME
 154   --enable-encoder=NAME    enable encoder NAME
 155   --disable-encoders       disable all encoders
 156   --disable-decoder=NAME   disable decoder NAME
 157   --enable-decoder=NAME    enable decoder NAME
 158   --disable-decoders       disable all decoders
 159   --disable-hwaccel=NAME   disable hwaccel NAME
 160   --enable-hwaccel=NAME    enable hwaccel NAME
 161   --disable-hwaccels       disable all hwaccels
 162   --disable-muxer=NAME     disable muxer NAME
 163   --enable-muxer=NAME      enable muxer NAME
 164   --disable-muxers         disable all muxers
 165   --disable-demuxer=NAME   disable demuxer NAME
 166   --enable-demuxer=NAME    enable demuxer NAME
 167   --disable-demuxers       disable all demuxers
 168   --enable-parser=NAME     enable parser NAME
 169   --disable-parser=NAME    disable parser NAME
 170   --disable-parsers        disable all parsers
 171   --enable-bsf=NAME        enable bitstream filter NAME
 172   --disable-bsf=NAME       disable bitstream filter NAME
 173   --disable-bsfs           disable all bitstream filters
 174   --enable-protocol=NAME   enable protocol NAME
 175   --disable-protocol=NAME  disable protocol NAME
 176   --disable-protocols      disable all protocols
 177   --enable-indev=NAME      enable input device NAME
 178   --disable-indev=NAME     disable input device NAME
 179   --disable-indevs         disable input devices
 180   --enable-outdev=NAME     enable output device NAME
 181   --disable-outdev=NAME    disable output device NAME
 182   --disable-outdevs        disable output devices
 183   --disable-devices        disable all devices
 184   --enable-filter=NAME     enable filter NAME
 185   --disable-filter=NAME    disable filter NAME
 186   --disable-filters        disable all filters
 187
 188 External library support:
 189
 190   Using any of the following switches will allow FFmpeg to link to the
 191   corresponding external library. All the components depending on that library
 192   will become enabled, if all their other dependencies are met and they are not
 193   explicitly disabled. E.g. --enable-libwavpack will enable linking to
 194   libwavpack and allow the libwavpack encoder to be built, unless it is
 195   specifically disabled with --disable-encoder=libwavpack.
 196
 197   Note that only the system libraries are auto-detected. All the other external
 198   libraries must be explicitly enabled.
 199
 200   Also note that the following help text describes the purpose of the libraries
 201   themselves, not all their features will necessarily be usable by FFmpeg.
 202
 203   --disable-alsa           disable ALSA support [autodetect]
 204   --disable-appkit         disable Apple AppKit framework [autodetect]
 205   --disable-avfoundation   disable Apple AVFoundation framework [autodetect]
 206   --enable-avisynth        enable reading of AviSynth script files [no]
 207   --disable-bzlib          disable bzlib [autodetect]
 208   --disable-coreimage      disable Apple CoreImage framework [autodetect]
 209   --enable-chromaprint     enable audio fingerprinting with chromaprint [no]
 210   --enable-frei0r          enable frei0r video filtering [no]
 211   --enable-gcrypt          enable gcrypt, needed for rtmp(t)e support
 212                            if openssl, librtmp or gmp is not used [no]
 213   --enable-gmp             enable gmp, needed for rtmp(t)e support
 214                            if openssl or librtmp is not used [no]
 215   --enable-gnutls          enable gnutls, needed for https support
 216                            if openssl, libtls or mbedtls is not used [no]
 217   --disable-iconv          disable iconv [autodetect]
 218   --enable-jni             enable JNI support [no]
 219   --enable-ladspa          enable LADSPA audio filtering [no]
 220   --enable-libaom          enable AV1 video encoding/decoding via libaom [no]
 221   --enable-libaribb24      enable ARIB text and caption decoding via libaribb24 [no]
 222   --enable-libass          enable libass subtitles rendering,
 223                            needed for subtitles and ass filter [no]
 224   --enable-libbluray       enable BluRay reading using libbluray [no]
 225   --enable-libbs2b         enable bs2b DSP library [no]
 226   --enable-libcaca         enable textual display using libcaca [no]
 227   --enable-libcelt         enable CELT decoding via libcelt [no]
 228   --enable-libcdio         enable audio CD grabbing with libcdio [no]
 229   --enable-libcodec2       enable codec2 en/decoding using libcodec2 [no]
 230   --enable-libdav1d        enable AV1 decoding via libdav1d [no]
 231   --enable-libdavs2        enable AVS2 decoding via libdavs2 [no]
 232   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 233                            and libraw1394 [no]
 234   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
 235   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
 236   --enable-libfontconfig   enable libfontconfig, useful for drawtext filter [no]
 237   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
 238   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
 239   --enable-libgme          enable Game Music Emu via libgme [no]
 240   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 241   --enable-libiec61883     enable iec61883 via libiec61883 [no]
 242   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 243   --enable-libjack         enable JACK audio sound server [no]
 244   --enable-libklvanc       enable Kernel Labs VANC processing [no]
 245   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
 246   --enable-liblensfun      enable lensfun lens correction [no]
 247   --enable-libmodplug      enable ModPlug via libmodplug [no]
 248   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 249   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 250   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 251   --enable-libopencv       enable video filtering via libopencv [no]
 252   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
 253   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 254   --enable-libopenmpt      enable decoding tracked files via libopenmpt [no]
 255   --enable-libopus         enable Opus de/encoding via libopus [no]
 256   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 257   --enable-librav1e        enable AV1 encoding via rav1e [no]
 258   --enable-librsvg         enable SVG rasterization via librsvg [no]
 259   --enable-librubberband   enable rubberband needed for rubberband filter [no]
 260   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 261   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 262   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
 263   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
 264   --enable-libsoxr         enable Include libsoxr resampling [no]
 265   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 266   --enable-libsrt          enable Haivision SRT protocol via libsrt [no]
 267   --enable-libssh          enable SFTP protocol via libssh [no]
 268   --enable-libtensorflow   enable TensorFlow as a DNN module backend
 269                            for DNN based filters like sr [no]
 270   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
 271   --enable-libtheora       enable Theora encoding via libtheora [no]
 272   --enable-libtls          enable LibreSSL (via libtls), needed for https support
 273                            if openssl, gnutls or mbedtls is not used [no]
 274   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 275   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 276   --enable-libvidstab      enable video stabilization using vid.stab [no]
 277   --enable-libvmaf         enable vmaf filter via libvmaf [no]
 278   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 279   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 280                            native implementation exists [no]
 281   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 282   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 283   --enable-libwebp         enable WebP encoding via libwebp [no]
 284   --enable-libx264         enable H.264 encoding via x264 [no]
 285   --enable-libx265         enable HEVC encoding via x265 [no]
 286   --enable-libxavs         enable AVS encoding via xavs [no]
 287   --enable-libxavs2        enable AVS2 encoding via xavs2 [no]
 288   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
 289   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
 290   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
 291   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
 292   --enable-libxvid         enable Xvid encoding via xvidcore,
 293                            native MPEG-4/Xvid encoder exists [no]
 294   --enable-libxml2         enable XML parsing using the C library libxml2, needed
 295                            for dash demuxing support [no]
 296   --enable-libzimg         enable z.lib, needed for zscale filter [no]
 297   --enable-libzmq          enable message passing via libzmq [no]
 298   --enable-libzvbi         enable teletext support via libzvbi [no]
 299   --enable-lv2             enable LV2 audio filtering [no]
 300   --disable-lzma           disable lzma [autodetect]
 301   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
 302   --enable-mbedtls         enable mbedTLS, needed for https support
 303                            if openssl, gnutls or libtls is not used [no]
 304   --enable-mediacodec      enable Android MediaCodec support [no]
 305   --enable-libmysofa       enable libmysofa, needed for sofalizer filter [no]
 306   --enable-openal          enable OpenAL 1.1 capture support [no]
 307   --enable-opencl          enable OpenCL processing [no]
 308   --enable-opengl          enable OpenGL rendering [no]
 309   --enable-openssl         enable openssl, needed for https support
 310                            if gnutls, libtls or mbedtls is not used [no]
 311   --enable-pocketsphinx    enable PocketSphinx, needed for asr filter [no]
 312   --disable-sndio          disable sndio support [autodetect]
 313   --disable-schannel       disable SChannel SSP, needed for TLS support on
 314                            Windows if openssl and gnutls are not used [autodetect]
 315   --disable-sdl2           disable sdl2 [autodetect]
 316   --disable-securetransport disable Secure Transport, needed for TLS support
 317                            on OSX if openssl and gnutls are not used [autodetect]
 318   --enable-vapoursynth     enable VapourSynth demuxer [no]
 319   --disable-xlib           disable xlib [autodetect]
 320   --disable-zlib           disable zlib [autodetect]
 321
 322   The following libraries provide various hardware acceleration features:
 323   --disable-amf            disable AMF video encoding code [autodetect]
 324   --disable-audiotoolbox   disable Apple AudioToolbox code [autodetect]
 325   --enable-cuda-nvcc       enable Nvidia CUDA compiler [no]
 326   --disable-cuda-llvm      disable CUDA compilation using clang [autodetect]
 327   --disable-cuvid          disable Nvidia CUVID support [autodetect]
 328   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
 329   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
 330   --disable-ffnvcodec      disable dynamically linked Nvidia code [autodetect]
 331   --enable-libdrm          enable DRM code (Linux) [no]
 332   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
 333   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
 334   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
 335   --disable-nvdec          disable Nvidia video decoding acceleration (via hwaccel) [autodetect]
 336   --disable-nvenc          disable Nvidia video encoding code [autodetect]
 337   --enable-omx             enable OpenMAX IL code [no]
 338   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
 339   --enable-rkmpp           enable Rockchip Media Process Platform code [no]
 340   --disable-v4l2-m2m       disable V4L2 mem2mem code [autodetect]
 341   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
 342   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
 343   --disable-videotoolbox   disable VideoToolbox code [autodetect]
 344
 345 Toolchain options:
 346   --arch=ARCH              select architecture [$arch]
 347   --cpu=CPU                select the minimum required CPU (affects
 348                            instruction selection, may crash on older CPUs)
 349   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 350   --progs-suffix=SUFFIX    program name suffix []
 351   --enable-cross-compile   assume a cross-compiler is used
 352   --sysroot=PATH           root of cross-build tree
 353   --sysinclude=PATH        location of cross-build system headers
 354   --target-os=OS           compiler targets OS [$target_os]
 355   --target-exec=CMD        command to run executables on target
 356   --target-path=DIR        path to view of build directory on target
 357   --target-samples=DIR     path to samples directory on target
 358   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 359   --toolchain=NAME         set tool defaults according to NAME
 360                            (gcc-asan, clang-asan, gcc-msan, clang-msan,
 361                            gcc-tsan, clang-tsan, gcc-usan, clang-usan,
 362                            valgrind-massif, valgrind-memcheck,
 363                            msvc, icl, gcov, llvm-cov, hardened)
 364   --nm=NM                  use nm tool NM [$nm_default]
 365   --ar=AR                  use archive tool AR [$ar_default]
 366   --as=AS                  use assembler AS [$as_default]
 367   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
 368   --strip=STRIP            use strip tool STRIP [$strip_default]
 369   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 370   --x86asmexe=EXE          use nasm-compatible assembler EXE [$x86asmexe_default]
 371   --cc=CC                  use C compiler CC [$cc_default]
 372   --cxx=CXX                use C compiler CXX [$cxx_default]
 373   --objcc=OCC              use ObjC compiler OCC [$cc_default]
 374   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 375   --nvcc=NVCC              use Nvidia CUDA compiler NVCC or clang [$nvcc_default]
 376   --ld=LD                  use linker LD [$ld_default]
 377   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 378   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 379   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 380   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
 381   --host-cc=HOSTCC         use host C compiler HOSTCC
 382   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 383   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 384   --host-ld=HOSTLD         use host linker HOSTLD
 385   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 386   --host-extralibs=HLIBS   use libs HLIBS when linking for host
 387   --host-os=OS             compiler host OS [$target_os]
 388   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 389   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 390   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
 391   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 392   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 393   --extra-ldsoflags=ELDFLAGS add ELDFLAGS to LDSOFLAGS [$LDSOFLAGS]
 394   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 395   --extra-version=STRING   version string suffix []
 396   --optflags=OPTFLAGS      override optimization-related compiler flags
 397   --nvccflags=NVCCFLAGS    override nvcc flags [$nvccflags_default]
 398   --build-suffix=SUFFIX    library name suffix []
 399   --enable-pic             build position-independent code
 400   --enable-thumb           compile for Thumb instruction set
 401   --enable-lto             use link-time optimization
 402   --env="ENV=override"     override the environment variables
 403
 404 Advanced options (experts only):
 405   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 406   --custom-allocator=NAME  use a supported custom allocator
 407   --disable-symver         disable symbol versioning
 408   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 409   --disable-safe-bitstream-reader
 410                            disable buffer boundary checking in bitreaders
 411                            (faster, but may crash)
 412   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
 413
 414 Optimization options (experts only):
 415   --disable-asm            disable all assembly optimizations
 416   --disable-altivec        disable AltiVec optimizations
 417   --disable-vsx            disable VSX optimizations
 418   --disable-power8         disable POWER8 optimizations
 419   --disable-amd3dnow       disable 3DNow! optimizations
 420   --disable-amd3dnowext    disable 3DNow! extended optimizations
 421   --disable-mmx            disable MMX optimizations
 422   --disable-mmxext         disable MMXEXT optimizations
 423   --disable-sse            disable SSE optimizations
 424   --disable-sse2           disable SSE2 optimizations
 425   --disable-sse3           disable SSE3 optimizations
 426   --disable-ssse3          disable SSSE3 optimizations
 427   --disable-sse4           disable SSE4 optimizations
 428   --disable-sse42          disable SSE4.2 optimizations
 429   --disable-avx            disable AVX optimizations
 430   --disable-xop            disable XOP optimizations
 431   --disable-fma3           disable FMA3 optimizations
 432   --disable-fma4           disable FMA4 optimizations
 433   --disable-avx2           disable AVX2 optimizations
 434   --disable-avx512         disable AVX-512 optimizations
 435   --disable-aesni          disable AESNI optimizations
 436   --disable-armv5te        disable armv5te optimizations
 437   --disable-armv6          disable armv6 optimizations
 438   --disable-armv6t2        disable armv6t2 optimizations
 439   --disable-vfp            disable VFP optimizations
 440   --disable-neon           disable NEON optimizations
 441   --disable-inline-asm     disable use of inline assembly
 442   --disable-x86asm         disable use of standalone x86 assembly
 443   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
 444   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 445   --disable-msa            disable MSA optimizations
 446   --disable-msa2           disable MSA2 optimizations
 447   --disable-mipsfpu        disable floating point MIPS optimizations
 448   --disable-mmi            disable Loongson SIMD optimizations
 449   --disable-fast-unaligned consider unaligned accesses slow
 450
 451 Developer options (useful when working on FFmpeg itself):
 452   --disable-debug          disable debugging symbols
 453   --enable-debug=LEVEL     set the debug level [$debuglevel]
 454   --disable-optimizations  disable compiler optimizations
 455   --enable-extra-warnings  enable more compiler warnings
 456   --disable-stripping      disable stripping of executables and shared libraries
 457   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 458                            2 causes a slowdown at runtime.
 459   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 460   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 461                            leaks and errors, using the specified valgrind binary.
 462                            Cannot be combined with --target-exec
 463   --enable-ftrapv          Trap arithmetic overflows
 464   --samples=PATH           location of test samples for FATE, if not set use
 465                            \$FATE_SAMPLES at make invocation time.
 466   --enable-neon-clobber-test check NEON registers for clobbering (should be
 467                            used only for debugging purposes)
 468   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 469                            should be used only for debugging purposes)
 470   --enable-random          randomly enable/disable components
 471   --disable-random
 472   --enable-random=LIST     randomly enable/disable specific components or
 473   --disable-random=LIST    component groups. LIST is a comma-separated list
 474                            of NAME[:PROB] entries where NAME is a component
 475                            (group) and PROB the probability associated with
 476                            NAME (default 0.5).
 477   --random-seed=VALUE      seed value for --enable/disable-random
 478   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 479                            (only applies to --disable-optimizations builds)
 480   --enable-ossfuzz         Enable building fuzzer tool
 481   --libfuzzer=PATH         path to libfuzzer
 482   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
 483                            in the name) of tests whose result is ignored
 484   --enable-linux-perf      enable Linux Performance Monitor API
 485   --disable-large-tests    disable tests that use a large amount of memory
 486
 487 NOTE: Object files are built at the place where configure is launched.
 488 EOF
 489   exit 0
 490 }
 491
 492 if test -t 1 && which tput >/dev/null 2>&1; then
 493     ncolors=$(tput colors)
 494     if test -n "$ncolors" && test $ncolors -ge 8; then
 495         bold_color=$(tput bold)
 496         warn_color=$(tput setaf 3)
 497         error_color=$(tput setaf 1)
 498         reset_color=$(tput sgr0)
 499     fi
 500     # 72 used instead of 80 since that's the default of pr
 501     ncols=$(tput cols)
 502 fi
 503 : ${ncols:=72}
 504
 505 log(){
 506     echo "$@" >> $logfile
 507 }
 508
 509 log_file(){
 510     log BEGIN "$1"
 511     log_file_i=1
 512     while IFS= read -r log_file_line; do
 513         printf '%5d\t%s\n' "$log_file_i" "$log_file_line"
 514         log_file_i=$(($log_file_i+1))
 515     done < "$1" >> "$logfile"
 516     log END "$1"
 517 }
 518
 519 warn(){
 520     log "WARNING: $*"
 521     WARNINGS="${WARNINGS}WARNING: $*\n"
 522 }
 523
 524 die(){
 525     log "$@"
 526     echo "$error_color$bold_color$@$reset_color"
 527     cat <<EOF
 528
 529 If you think configure made a mistake, make sure you are using the latest
 530 version from Git.  If the latest version fails, report the problem to the
 531 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 532 EOF
 533     if disabled logging; then
 534         cat <<EOF
 535 Rerun configure with logging enabled (do not use --disable-logging), and
 536 include the log this produces with your report.
 537 EOF
 538     else
 539         cat <<EOF
 540 Include the log file "$logfile" produced by configure as this will help
 541 solve the problem.
 542 EOF
 543     fi
 544     exit 1
 545 }
 546
 547 # Avoid locale weirdness, besides we really just want to translate ASCII.
 548 toupper(){
 549     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 550 }
 551
 552 tolower(){
 553     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 554 }
 555
 556 c_escape(){
 557     echo "$*" | sed 's/["\\]/\\\0/g'
 558 }
 559
 560 sh_quote(){
 561     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 562     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 563     echo "$v"
 564 }
 565
 566 cleanws(){
 567     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
 568 }
 569
 570 filter(){
 571     pat=$1
 572     shift
 573     for v; do
 574         eval "case '$v' in $pat) printf '%s ' '$v' ;; esac"
 575     done
 576 }
 577
 578 filter_out(){
 579     pat=$1
 580     shift
 581     for v; do
 582         eval "case '$v' in $pat) ;; *) printf '%s ' '$v' ;; esac"
 583     done
 584 }
 585
 586 map(){
 587     m=$1
 588     shift
 589     for v; do eval $m; done
 590 }
 591
 592 add_suffix(){
 593     suffix=$1
 594     shift
 595     for v; do echo ${v}${suffix}; done
 596 }
 597
 598 remove_suffix(){
 599     suffix=$1
 600     shift
 601     for v; do echo ${v%$suffix}; done
 602 }
 603
 604 set_all(){
 605     value=$1
 606     shift
 607     for var in $*; do
 608         eval $var=$value
 609     done
 610 }
 611
 612 set_weak(){
 613     value=$1
 614     shift
 615     for var; do
 616         eval : \${$var:=$value}
 617     done
 618 }
 619
 620 sanitize_var_name(){
 621     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 622 }
 623
 624 set_sanitized(){
 625     var=$1
 626     shift
 627     eval $(sanitize_var_name "$var")='$*'
 628 }
 629
 630 get_sanitized(){
 631     eval echo \$$(sanitize_var_name "$1")
 632 }
 633
 634 pushvar(){
 635     for pvar in $*; do
 636         eval level=\${${pvar}_level:=0}
 637         eval ${pvar}_${level}="\$$pvar"
 638         eval ${pvar}_level=$(($level+1))
 639     done
 640 }
 641
 642 popvar(){
 643     for pvar in $*; do
 644         eval level=\${${pvar}_level:-0}
 645         test $level = 0 && continue
 646         eval level=$(($level-1))
 647         eval $pvar="\${${pvar}_${level}}"
 648         eval ${pvar}_level=$level
 649         eval unset ${pvar}_${level}
 650     done
 651 }
 652
 653 request(){
 654     for var in $*; do
 655         eval ${var}_requested=yes
 656         eval $var=
 657     done
 658 }
 659
 660 warn_if_gets_disabled(){
 661     for var in $*; do
 662         WARN_IF_GETS_DISABLED_LIST="$WARN_IF_GETS_DISABLED_LIST $var"
 663     done
 664 }
 665
 666 enable(){
 667     set_all yes $*
 668 }
 669
 670 disable(){
 671     set_all no $*
 672 }
 673
 674 disable_with_reason(){
 675     disable $1
 676     eval "${1}_disable_reason=\"$2\""
 677     if requested $1; then
 678         die "ERROR: $1 requested, but $2"
 679     fi
 680 }
 681
 682 enable_weak(){
 683     set_weak yes $*
 684 }
 685
 686 disable_weak(){
 687     set_weak no $*
 688 }
 689
 690 enable_sanitized(){
 691     for var; do
 692         enable $(sanitize_var_name $var)
 693     done
 694 }
 695
 696 disable_sanitized(){
 697     for var; do
 698         disable $(sanitize_var_name $var)
 699     done
 700 }
 701
 702 do_enable_deep(){
 703     for var; do
 704         enabled $var && continue
 705         set -- $var
 706         eval enable_deep \$${var}_select
 707         var=$1
 708         eval enable_deep_weak \$${var}_suggest
 709     done
 710 }
 711
 712 enable_deep(){
 713     do_enable_deep $*
 714     enable $*
 715 }
 716
 717 enable_deep_weak(){
 718     for var; do
 719         disabled $var && continue
 720         set -- $var
 721         do_enable_deep $var
 722         var=$1
 723         enable_weak $var
 724     done
 725 }
 726
 727 requested(){
 728     test "${1#!}" = "$1" && op="=" || op="!="
 729     eval test "x\$${1#!}_requested" $op "xyes"
 730 }
 731
 732 enabled(){
 733     test "${1#!}" = "$1" && op="=" || op="!="
 734     eval test "x\$${1#!}" $op "xyes"
 735 }
 736
 737 disabled(){
 738     test "${1#!}" = "$1" && op="=" || op="!="
 739     eval test "x\$${1#!}" $op "xno"
 740 }
 741
 742 enabled_all(){
 743     for opt; do
 744         enabled $opt || return 1
 745     done
 746 }
 747
 748 disabled_all(){
 749     for opt; do
 750         disabled $opt || return 1
 751     done
 752 }
 753
 754 enabled_any(){
 755     for opt; do
 756         enabled $opt && return 0
 757     done
 758 }
 759
 760 disabled_any(){
 761     for opt; do
 762         disabled $opt && return 0
 763     done
 764     return 1
 765 }
 766
 767 set_default(){
 768     for opt; do
 769         eval : \${$opt:=\$${opt}_default}
 770     done
 771 }
 772
 773 is_in(){
 774     value=$1
 775     shift
 776     for var in $*; do
 777         [ $var = $value ] && return 0
 778     done
 779     return 1
 780 }
 781
 782 # The cfg loop is very hot (several thousands iterations), and in bash also
 783 # potentialy quite slow. Try to abort the iterations early, preferably without
 784 # calling functions. 70%+ of the time cfg is already done or without deps.
 785 check_deps(){
 786     for cfg; do
 787         eval [ x\$${cfg}_checking = xdone ] && continue
 788         eval [ x\$${cfg}_checking = xinprogress ] && die "Circular dependency for $cfg."
 789
 790         eval "
 791         dep_all=\$${cfg}_deps
 792         dep_any=\$${cfg}_deps_any
 793         dep_con=\$${cfg}_conflict
 794         dep_sel=\$${cfg}_select
 795         dep_sgs=\$${cfg}_suggest
 796         dep_ifa=\$${cfg}_if
 797         dep_ifn=\$${cfg}_if_any
 798         "
 799
 800         # most of the time here $cfg has no deps - avoid costly no-op work
 801         if [ "$dep_all$dep_any$dep_con$dep_sel$dep_sgs$dep_ifa$dep_ifn" ]; then
 802             eval ${cfg}_checking=inprogress
 803
 804             set -- $cfg "$dep_all" "$dep_any" "$dep_con" "$dep_sel" "$dep_sgs" "$dep_ifa" "$dep_ifn"
 805             check_deps $dep_all $dep_any $dep_con $dep_sel $dep_sgs $dep_ifa $dep_ifn
 806             cfg=$1; dep_all=$2; dep_any=$3; dep_con=$4; dep_sel=$5 dep_sgs=$6; dep_ifa=$7; dep_ifn=$8
 807
 808             [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 809             [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 810             enabled_all  $dep_all || { disable_with_reason $cfg "not all dependencies are satisfied: $dep_all"; }
 811             enabled_any  $dep_any || { disable_with_reason $cfg "not any dependency is satisfied: $dep_any"; }
 812             disabled_all $dep_con || { disable_with_reason $cfg "some conflicting dependencies are unsatisfied: $dep_con"; }
 813             disabled_any $dep_sel && { disable_with_reason $cfg "some selected dependency is unsatisfied: $dep_sel"; }
 814
 815             enabled $cfg && enable_deep_weak $dep_sel $dep_sgs
 816
 817             for dep in $dep_all $dep_any $dep_sel $dep_sgs; do
 818                 # filter out library deps, these do not belong in extralibs
 819                 is_in $dep $LIBRARY_LIST && continue
 820                 enabled $dep && eval append ${cfg}_extralibs ${dep}_extralibs
 821             done
 822         fi
 823
 824         eval ${cfg}_checking=done
 825     done
 826 }
 827
 828 print_config(){
 829     pfx=$1
 830     files=$2
 831     shift 2
 832     map 'eval echo "$v \${$v:-no}"' "$@" |
 833     awk "BEGIN { split(\"$files\", files) }
 834         {
 835             c = \"$pfx\" toupper(\$1);
 836             v = \$2;
 837             sub(/yes/, 1, v);
 838             sub(/no/,  0, v);
 839             for (f in files) {
 840                 file = files[f];
 841                 if (file ~ /\\.h\$/) {
 842                     printf(\"#define %s %d\\n\", c, v) >>file;
 843                 } else if (file ~ /\\.asm\$/) {
 844                     printf(\"%%define %s %d\\n\", c, v) >>file;
 845                 } else if (file ~ /\\.mak\$/) {
 846                     n = -v ? \"\" : \"!\";
 847                     printf(\"%s%s=yes\\n\", n, c) >>file;
 848                 } else if (file ~ /\\.texi\$/) {
 849                     pre = -v ? \"\" : \"@c \";
 850                     yesno = \$2;
 851                     c2 = tolower(c);
 852                     gsub(/_/, \"-\", c2);
 853                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 854                 }
 855             }
 856         }"
 857 }
 858
 859 print_enabled(){
 860     suf=$1
 861     shift
 862     for v; do
 863         enabled $v && printf "%s\n" ${v%$suf}
 864     done
 865 }
 866
 867 append(){
 868     var=$1
 869     shift
 870     eval "$var=\"\$$var $*\""
 871 }
 872
 873 prepend(){
 874     var=$1
 875     shift
 876     eval "$var=\"$* \$$var\""
 877 }
 878
 879 reverse () {
 880     eval '
 881         reverse_out=
 882         for v in $'$1'; do
 883             reverse_out="$v $reverse_out"
 884         done
 885         '$1'=$reverse_out
 886     '
 887 }
 888
 889 # keeps the last occurence of each non-unique item
 890 unique(){
 891     unique_out=
 892     eval unique_in=\$$1
 893     reverse unique_in
 894     for v in $unique_in; do
 895         # " $unique_out" +space such that every item is surrounded with spaces
 896         case " $unique_out" in *" $v "*) continue; esac  # already in list
 897         unique_out="$unique_out$v "
 898     done
 899     reverse unique_out
 900     eval $1=\$unique_out
 901 }
 902
 903 resolve(){
 904     resolve_out=
 905     eval resolve_in=\$$1
 906     for v in $resolve_in; do
 907         eval 'resolve_out="$resolve_out$'$v' "'
 908     done
 909     eval $1=\$resolve_out
 910 }
 911
 912 add_cppflags(){
 913     append CPPFLAGS "$@"
 914 }
 915
 916 add_cflags(){
 917     append CFLAGS $($cflags_filter "$@")
 918 }
 919
 920 add_cflags_headers(){
 921     append CFLAGS_HEADERS $($cflags_filter "$@")
 922 }
 923
 924 add_cxxflags(){
 925     append CXXFLAGS $($cflags_filter "$@")
 926 }
 927
 928 add_objcflags(){
 929     append OBJCFLAGS $($objcflags_filter "$@")
 930 }
 931
 932 add_asflags(){
 933     append ASFLAGS $($asflags_filter "$@")
 934 }
 935
 936 add_ldflags(){
 937     append LDFLAGS $($ldflags_filter "$@")
 938 }
 939
 940 add_ldexeflags(){
 941     append LDEXEFLAGS $($ldflags_filter "$@")
 942 }
 943
 944 add_ldsoflags(){
 945     append LDSOFLAGS $($ldflags_filter "$@")
 946 }
 947
 948 add_extralibs(){
 949     prepend extralibs $($ldflags_filter "$@")
 950 }
 951
 952 add_stripflags(){
 953     append ASMSTRIPFLAGS "$@"
 954 }
 955
 956 add_host_cppflags(){
 957     append host_cppflags "$@"
 958 }
 959
 960 add_host_cflags(){
 961     append host_cflags $($host_cflags_filter "$@")
 962 }
 963
 964 add_host_ldflags(){
 965     append host_ldflags $($host_ldflags_filter "$@")
 966 }
 967
 968 add_compat(){
 969     append compat_objs $1
 970     shift
 971     map 'add_cppflags -D$v' "$@"
 972 }
 973
 974 test_cmd(){
 975     log "$@"
 976     "$@" >> $logfile 2>&1
 977 }
 978
 979 test_stat(){
 980     log test_stat "$@"
 981     stat "$1" >> $logfile 2>&1
 982 }
 983
 984 cc_e(){
 985     eval printf '%s\\n' $CC_E
 986 }
 987
 988 cc_o(){
 989     eval printf '%s\\n' $CC_O
 990 }
 991
 992 as_o(){
 993     eval printf '%s\\n' $AS_O
 994 }
 995
 996 x86asm_o(){
 997     eval printf '%s\\n' $X86ASM_O
 998 }
 999
1000 ld_o(){
1001     eval printf '%s\\n' $LD_O
1002 }
1003
1004 hostcc_e(){
1005     eval printf '%s\\n' $HOSTCC_E
1006 }
1007
1008 hostcc_o(){
1009     eval printf '%s\\n' $HOSTCC_O
1010 }
1011
1012 nvcc_o(){
1013     eval printf '%s\\n' $NVCC_O
1014 }
1015
1016 test_cc(){
1017     log test_cc "$@"
1018     cat > $TMPC
1019     log_file $TMPC
1020     test_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
1021 }
1022
1023 test_cxx(){
1024     log test_cxx "$@"
1025     cat > $TMPCPP
1026     log_file $TMPCPP
1027     test_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
1028 }
1029
1030 test_objcc(){
1031     log test_objcc "$@"
1032     cat > $TMPM
1033     log_file $TMPM
1034     test_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
1035 }
1036
1037 test_nvcc(){
1038     log test_nvcc "$@"
1039     cat > $TMPCU
1040     log_file $TMPCU
1041     tmpcu_=$TMPCU
1042     tmpo_=$TMPO
1043     [ -x "$(command -v cygpath)" ] && tmpcu_=$(cygpath -m $tmpcu_) && tmpo_=$(cygpath -m $tmpo_)
1044     test_cmd $nvcc $nvccflags "$@" $NVCC_C $(nvcc_o $tmpo_) $tmpcu_
1045 }
1046
1047 check_nvcc() {
1048     log check_nvcc "$@"
1049     name=$1
1050     shift 1
1051     disabled $name && return
1052     disable $name
1053     test_nvcc "$@" <<EOF && enable $name
1054 extern "C" {
1055     __global__ void hello(unsigned char *data) {}
1056 }
1057 EOF
1058 }
1059
1060 test_cpp(){
1061     log test_cpp "$@"
1062     cat > $TMPC
1063     log_file $TMPC
1064     test_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
1065 }
1066
1067 test_as(){
1068     log test_as "$@"
1069     cat > $TMPS
1070     log_file $TMPS
1071     test_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
1072 }
1073
1074 test_x86asm(){
1075     log test_x86asm "$@"
1076     echo "$1" > $TMPASM
1077     log_file $TMPASM
1078     shift
1079     test_cmd $x86asmexe $X86ASMFLAGS -Werror "$@" $(x86asm_o $TMPO) $TMPASM
1080 }
1081
1082 check_cmd(){
1083     log check_cmd "$@"
1084     cmd=$1
1085     disabled $cmd && return
1086     disable $cmd
1087     test_cmd $@ && enable $cmd
1088 }
1089
1090 check_as(){
1091     log check_as "$@"
1092     name=$1
1093     code=$2
1094     shift 2
1095     disable $name
1096     test_as $@ <<EOF && enable $name
1097 $code
1098 EOF
1099 }
1100
1101 check_inline_asm(){
1102     log check_inline_asm "$@"
1103     name="$1"
1104     code="$2"
1105     shift 2
1106     disable $name
1107     test_cc "$@" <<EOF && enable $name
1108 void foo(void){ __asm__ volatile($code); }
1109 EOF
1110 }
1111
1112 check_inline_asm_flags(){
1113     log check_inline_asm_flags "$@"
1114     name="$1"
1115     code="$2"
1116     flags=''
1117     shift 2
1118     while [ "$1" != "" ]; do
1119       append flags $1
1120       shift
1121     done;
1122     disable $name
1123     cat > $TMPC <<EOF
1124 void foo(void){ __asm__ volatile($code); }
1125 EOF
1126     log_file $TMPC
1127     test_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
1128     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
1129 }
1130
1131 check_insn(){
1132     log check_insn "$@"
1133     check_inline_asm ${1}_inline "\"$2\""
1134     check_as ${1}_external "$2"
1135 }
1136
1137 check_x86asm(){
1138     log check_x86asm "$@"
1139     name=$1
1140     shift
1141     disable $name
1142     test_x86asm "$@" && enable $name
1143 }
1144
1145 test_ld(){
1146     log test_ld "$@"
1147     type=$1
1148     shift 1
1149     flags=$(filter_out '-l*|*.so' $@)
1150     libs=$(filter '-l*|*.so' $@)
1151     test_$type $($cflags_filter $flags) || return
1152     flags=$($ldflags_filter $flags)
1153     libs=$($ldflags_filter $libs)
1154     test_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
1155 }
1156
1157 check_ld(){
1158     log check_ld "$@"
1159     type=$1
1160     name=$2
1161     shift 2
1162     disable $name
1163     test_ld $type $@ && enable $name
1164 }
1165
1166 print_include(){
1167     hdr=$1
1168     test "${hdr%.h}" = "${hdr}" &&
1169         echo "#include $hdr"    ||
1170         echo "#include <$hdr>"
1171 }
1172
1173 test_code(){
1174     log test_code "$@"
1175     check=$1
1176     headers=$2
1177     code=$3
1178     shift 3
1179     {
1180         for hdr in $headers; do
1181             print_include $hdr
1182         done
1183         echo "int main(void) { $code; return 0; }"
1184     } | test_$check "$@"
1185 }
1186
1187 check_cppflags(){
1188     log check_cppflags "$@"
1189     test_cpp "$@" <<EOF && append CPPFLAGS "$@"
1190 #include <stdlib.h>
1191 EOF
1192 }
1193
1194 test_cflags(){
1195     log test_cflags "$@"
1196     set -- $($cflags_filter "$@")
1197     test_cc "$@" <<EOF
1198 int x;
1199 EOF
1200 }
1201
1202 check_cflags(){
1203     log check_cflags "$@"
1204     test_cflags "$@" && add_cflags "$@"
1205 }
1206
1207 check_cxxflags(){
1208     log check_cxxflags "$@"
1209     set -- $($cflags_filter "$@")
1210     test_cxx "$@" <<EOF && append CXXFLAGS "$@"
1211 int x;
1212 EOF
1213 }
1214
1215 test_objcflags(){
1216     log test_objcflags "$@"
1217     set -- $($objcflags_filter "$@")
1218     test_objcc "$@" <<EOF
1219 int x;
1220 EOF
1221 }
1222
1223 check_objcflags(){
1224     log check_objcflags "$@"
1225     test_objcflags "$@" && add_objcflags "$@"
1226 }
1227
1228 test_ldflags(){
1229     log test_ldflags "$@"
1230     set -- $($ldflags_filter "$@")
1231     test_ld "cc" "$@" <<EOF
1232 int main(void){ return 0; }
1233 EOF
1234 }
1235
1236 check_ldflags(){
1237     log check_ldflags "$@"
1238     test_ldflags "$@" && add_ldflags "$@"
1239 }
1240
1241 test_stripflags(){
1242     log test_stripflags "$@"
1243     # call test_cc to get a fresh TMPO
1244     test_cc <<EOF
1245 int main(void) { return 0; }
1246 EOF
1247     test_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1248 }
1249
1250 check_stripflags(){
1251     log check_stripflags "$@"
1252     test_stripflags "$@" && add_stripflags "$@"
1253 }
1254
1255 check_headers(){
1256     log check_headers "$@"
1257     headers=$1
1258     shift
1259     disable_sanitized $headers
1260     {
1261         for hdr in $headers; do
1262             print_include $hdr
1263         done
1264         echo "int x;"
1265     } | test_cpp "$@" && enable_sanitized $headers
1266 }
1267
1268 check_header_objcc(){
1269     log check_header_objcc "$@"
1270     rm -f -- "$TMPO"
1271     header=$1
1272     shift
1273     disable_sanitized $header
1274     {
1275        echo "#include <$header>"
1276        echo "int main(void) { return 0; }"
1277     } | test_objcc && test_stat "$TMPO" && enable_sanitized $header
1278 }
1279
1280 check_apple_framework(){
1281     log check_apple_framework "$@"
1282     framework="$1"
1283     name="$(tolower $framework)"
1284     header="${framework}/${framework}.h"
1285     disable $name
1286     check_header_objcc $header &&
1287         enable $name && eval ${name}_extralibs='"-framework $framework"'
1288 }
1289
1290 check_func(){
1291     log check_func "$@"
1292     func=$1
1293     shift
1294     disable $func
1295     test_ld "cc" "$@" <<EOF && enable $func
1296 extern int $func();
1297 int main(void){ $func(); }
1298 EOF
1299 }
1300
1301 check_complexfunc(){
1302     log check_complexfunc "$@"
1303     func=$1
1304     narg=$2
1305     shift 2
1306     test $narg = 2 && args="f, g" || args="f * I"
1307     disable $func
1308     test_ld "cc" "$@" <<EOF && enable $func
1309 #include <complex.h>
1310 #include <math.h>
1311 float foo(complex float f, complex float g) { return $func($args); }
1312 int main(void){ return (int) foo; }
1313 EOF
1314 }
1315
1316 check_mathfunc(){
1317     log check_mathfunc "$@"
1318     func=$1
1319     narg=$2
1320     shift 2
1321     test $narg = 2 && args="f, g" || args="f"
1322     disable $func
1323     test_ld "cc" "$@" <<EOF && enable $func
1324 #include <math.h>
1325 float foo(float f, float g) { return $func($args); }
1326 int main(void){ return (int) foo; }
1327 EOF
1328 }
1329
1330 check_func_headers(){
1331     log check_func_headers "$@"
1332     headers=$1
1333     funcs=$2
1334     shift 2
1335     {
1336         for hdr in $headers; do
1337             print_include $hdr
1338         done
1339         echo "#include <stdint.h>"
1340         for func in $funcs; do
1341             echo "long check_$func(void) { return (long) $func; }"
1342         done
1343         echo "int main(void) { int ret = 0;"
1344         # LTO could optimize out the test functions without this
1345         for func in $funcs; do
1346             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1347         done
1348         echo "return ret; }"
1349     } | test_ld "cc" "$@" && enable $funcs && enable_sanitized $headers
1350 }
1351
1352 check_class_headers_cpp(){
1353     log check_class_headers_cpp "$@"
1354     headers=$1
1355     classes=$2
1356     shift 2
1357     {
1358         for hdr in $headers; do
1359             echo "#include <$hdr>"
1360         done
1361         echo "int main(void) { "
1362         i=1
1363         for class in $classes; do
1364             echo "$class obj$i;"
1365             i=$(expr $i + 1)
1366         done
1367         echo "return 0; }"
1368     } | test_ld "cxx" "$@" && enable $funcs && enable_sanitized $headers
1369 }
1370
1371 test_cpp_condition(){
1372     log test_cpp_condition "$@"
1373     header=$1
1374     condition=$2
1375     shift 2
1376     test_cpp "$@" <<EOF
1377 #include <$header>
1378 #if !($condition)
1379 #error "unsatisfied condition: $condition"
1380 #endif
1381 EOF
1382 }
1383
1384 check_cpp_condition(){
1385     log check_cpp_condition "$@"
1386     name=$1
1387     shift 1
1388     disable $name
1389     test_cpp_condition "$@" && enable $name
1390 }
1391
1392 test_cflags_cc(){
1393     log test_cflags_cc "$@"
1394     flags=$1
1395     header=$2
1396     condition=$3
1397     shift 3
1398     set -- $($cflags_filter "$flags")
1399     test_cc "$@" <<EOF
1400 #include <$header>
1401 #if !($condition)
1402 #error "unsatisfied condition: $condition"
1403 #endif
1404 EOF
1405 }
1406
1407 check_lib(){
1408     log check_lib "$@"
1409     name="$1"
1410     headers="$2"
1411     funcs="$3"
1412     shift 3
1413     disable $name
1414     check_func_headers "$headers" "$funcs" "$@" &&
1415         enable $name && eval ${name}_extralibs="\$@"
1416 }
1417
1418 check_lib_cpp(){
1419     log check_lib_cpp "$@"
1420     name="$1"
1421     headers="$2"
1422     classes="$3"
1423     shift 3
1424     disable $name
1425     check_class_headers_cpp "$headers" "$classes" "$@" &&
1426         enable $name && eval ${name}_extralibs="\$@"
1427 }
1428
1429 test_pkg_config(){
1430     log test_pkg_config "$@"
1431     name="$1"
1432     pkg_version="$2"
1433     pkg="${2%% *}"
1434     headers="$3"
1435     funcs="$4"
1436     shift 4
1437     disable $name
1438     test_cmd $pkg_config --exists --print-errors $pkg_version || return
1439     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1440     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1441     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1442         enable $name &&
1443         set_sanitized "${name}_cflags"    $pkg_cflags &&
1444         set_sanitized "${name}_extralibs" $pkg_libs
1445 }
1446
1447 check_pkg_config(){
1448     log check_pkg_config "$@"
1449     name="$1"
1450     test_pkg_config "$@" &&
1451         eval add_cflags \$${name}_cflags
1452 }
1453
1454 test_exec(){
1455     test_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1456 }
1457
1458 check_exec_crash(){
1459     log check_exec_crash "$@"
1460     code=$(cat)
1461
1462     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1463     # are safe but may not be available everywhere.  Thus we use
1464     # raise(SIGTERM) instead.  The check is run in a subshell so we
1465     # can redirect the "Terminated" message from the shell.  SIGBUS
1466     # is not defined by standard C so it is used conditionally.
1467
1468     (test_exec "$@") >> $logfile 2>&1 <<EOF
1469 #include <signal.h>
1470 static void sighandler(int sig){
1471     raise(SIGTERM);
1472 }
1473 int foo(void){
1474     $code
1475 }
1476 int (*func_ptr)(void) = foo;
1477 int main(void){
1478     signal(SIGILL, sighandler);
1479     signal(SIGFPE, sighandler);
1480     signal(SIGSEGV, sighandler);
1481 #ifdef SIGBUS
1482     signal(SIGBUS, sighandler);
1483 #endif
1484     return func_ptr();
1485 }
1486 EOF
1487 }
1488
1489 check_type(){
1490     log check_type "$@"
1491     headers=$1
1492     type=$2
1493     shift 2
1494     disable_sanitized "$type"
1495     test_code cc "$headers" "$type v" "$@" && enable_sanitized "$type"
1496 }
1497
1498 check_struct(){
1499     log check_struct "$@"
1500     headers=$1
1501     struct=$2
1502     member=$3
1503     shift 3
1504     disable_sanitized "${struct}_${member}"
1505     test_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1506         enable_sanitized "${struct}_${member}"
1507 }
1508
1509 check_builtin(){
1510     log check_builtin "$@"
1511     name=$1
1512     headers=$2
1513     builtin=$3
1514     shift 3
1515     disable "$name"
1516     test_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1517 }
1518
1519 check_compile_assert(){
1520     log check_compile_assert "$@"
1521     name=$1
1522     headers=$2
1523     condition=$3
1524     shift 3
1525     disable "$name"
1526     test_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1527 }
1528
1529 check_cc(){
1530     log check_cc "$@"
1531     name=$1
1532     shift
1533     disable "$name"
1534     test_code cc "$@" && enable "$name"
1535 }
1536
1537 require(){
1538     log require "$@"
1539     name_version="$1"
1540     name="${1%% *}"
1541     shift
1542     check_lib $name "$@" || die "ERROR: $name_version not found"
1543 }
1544
1545 require_cc(){
1546     log require_cc "$@"
1547     name="$1"
1548     check_cc "$@" || die "ERROR: $name failed"
1549 }
1550
1551 require_cpp(){
1552     name="$1"
1553     headers="$2"
1554     classes="$3"
1555     shift 3
1556     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1557 }
1558
1559 require_headers(){
1560     log require_headers "$@"
1561     headers="$1"
1562     check_headers "$@" || die "ERROR: $headers not found"
1563 }
1564
1565 require_cpp_condition(){
1566     log require_cpp_condition "$@"
1567     condition="$3"
1568     check_cpp_condition "$@" || die "ERROR: $condition not satisfied"
1569 }
1570
1571 require_pkg_config(){
1572     log require_pkg_config "$@"
1573     pkg_version="$2"
1574     check_pkg_config "$@" || die "ERROR: $pkg_version not found using pkg-config$pkg_config_fail_message"
1575 }
1576
1577 test_host_cc(){
1578     log test_host_cc "$@"
1579     cat > $TMPC
1580     log_file $TMPC
1581     test_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1582 }
1583
1584 test_host_cpp(){
1585     log test_host_cpp "$@"
1586     cat > $TMPC
1587     log_file $TMPC
1588     test_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1589 }
1590
1591 check_host_cppflags(){
1592     log check_host_cppflags "$@"
1593     test_host_cpp "$@" <<EOF && append host_cppflags "$@"
1594 #include <stdlib.h>
1595 EOF
1596 }
1597
1598 check_host_cflags(){
1599     log check_host_cflags "$@"
1600     set -- $($host_cflags_filter "$@")
1601     test_host_cc "$@" <<EOF && append host_cflags "$@"
1602 int x;
1603 EOF
1604 }
1605
1606 test_host_cpp_condition(){
1607     log test_host_cpp_condition "$@"
1608     header=$1
1609     condition=$2
1610     shift 2
1611     test_host_cpp "$@" <<EOF
1612 #include <$header>
1613 #if !($condition)
1614 #error "unsatisfied condition: $condition"
1615 #endif
1616 EOF
1617 }
1618
1619 check_host_cpp_condition(){
1620     log check_host_cpp_condition "$@"
1621     name=$1
1622     shift 1
1623     disable $name
1624     test_host_cpp_condition "$@" && enable $name
1625 }
1626
1627 cp_if_changed(){
1628     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1629     mkdir -p "$(dirname $2)"
1630     cp -f "$1" "$2"
1631 }
1632
1633 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1634 # system-dependent things.
1635
1636 AVCODEC_COMPONENTS="
1637     bsfs
1638     decoders
1639     encoders
1640     hwaccels
1641     parsers
1642 "
1643
1644 AVDEVICE_COMPONENTS="
1645     indevs
1646     outdevs
1647 "
1648
1649 AVFILTER_COMPONENTS="
1650     filters
1651 "
1652
1653 AVFORMAT_COMPONENTS="
1654     demuxers
1655     muxers
1656     protocols
1657 "
1658
1659 COMPONENT_LIST="
1660     $AVCODEC_COMPONENTS
1661     $AVDEVICE_COMPONENTS
1662     $AVFILTER_COMPONENTS
1663     $AVFORMAT_COMPONENTS
1664 "
1665
1666 EXAMPLE_LIST="
1667     avio_dir_cmd_example
1668     avio_reading_example
1669     decode_audio_example
1670     decode_video_example
1671     demuxing_decoding_example
1672     encode_audio_example
1673     encode_video_example
1674     extract_mvs_example
1675     filter_audio_example
1676     filtering_audio_example
1677     filtering_video_example
1678     http_multiclient_example
1679     hw_decode_example
1680     metadata_example
1681     muxing_example
1682     qsvdec_example
1683     remuxing_example
1684     resampling_audio_example
1685     scaling_video_example
1686     transcode_aac_example
1687     transcoding_example
1688     vaapi_encode_example
1689     vaapi_transcode_example
1690 "
1691
1692 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1693     alsa
1694     appkit
1695     avfoundation
1696     bzlib
1697     coreimage
1698     iconv
1699     libxcb
1700     libxcb_shm
1701     libxcb_shape
1702     libxcb_xfixes
1703     lzma
1704     schannel
1705     sdl2
1706     securetransport
1707     sndio
1708     xlib
1709     zlib
1710 "
1711
1712 EXTERNAL_LIBRARY_GPL_LIST="
1713     avisynth
1714     frei0r
1715     libcdio
1716     libdavs2
1717     librubberband
1718     libvidstab
1719     libx264
1720     libx265
1721     libxavs
1722     libxavs2
1723     libxvid
1724 "
1725
1726 EXTERNAL_LIBRARY_NONFREE_LIST="
1727     decklink
1728     libfdk_aac
1729     openssl
1730     libtls
1731 "
1732
1733 EXTERNAL_LIBRARY_VERSION3_LIST="
1734     gmp
1735     libaribb24
1736     liblensfun
1737     libopencore_amrnb
1738     libopencore_amrwb
1739     libvmaf
1740     libvo_amrwbenc
1741     mbedtls
1742     rkmpp
1743 "
1744
1745 EXTERNAL_LIBRARY_GPLV3_LIST="
1746     libsmbclient
1747 "
1748
1749 EXTERNAL_LIBRARY_LIST="
1750     $EXTERNAL_LIBRARY_GPL_LIST
1751     $EXTERNAL_LIBRARY_NONFREE_LIST
1752     $EXTERNAL_LIBRARY_VERSION3_LIST
1753     $EXTERNAL_LIBRARY_GPLV3_LIST
1754     chromaprint
1755     gcrypt
1756     gnutls
1757     jni
1758     ladspa
1759     libaom
1760     libass
1761     libbluray
1762     libbs2b
1763     libcaca
1764     libcelt
1765     libcodec2
1766     libdav1d
1767     libdc1394
1768     libdrm
1769     libflite
1770     libfontconfig
1771     libfreetype
1772     libfribidi
1773     libgme
1774     libgsm
1775     libiec61883
1776     libilbc
1777     libjack
1778     libklvanc
1779     libkvazaar
1780     libmodplug
1781     libmp3lame
1782     libmysofa
1783     libopencv
1784     libopenh264
1785     libopenjpeg
1786     libopenmpt
1787     libopus
1788     libpulse
1789     librav1e
1790     librsvg
1791     librtmp
1792     libshine
1793     libsmbclient
1794     libsnappy
1795     libsoxr
1796     libspeex
1797     libsrt
1798     libssh
1799     libtensorflow
1800     libtesseract
1801     libtheora
1802     libtwolame
1803     libv4l2
1804     libvorbis
1805     libvpx
1806     libwavpack
1807     libwebp
1808     libxml2
1809     libzimg
1810     libzmq
1811     libzvbi
1812     lv2
1813     mediacodec
1814     openal
1815     opengl
1816     pocketsphinx
1817     vapoursynth
1818 "
1819
1820 HWACCEL_AUTODETECT_LIBRARY_LIST="
1821     amf
1822     audiotoolbox
1823     crystalhd
1824     cuda
1825     cuda_llvm
1826     cuvid
1827     d3d11va
1828     dxva2
1829     ffnvcodec
1830     nvdec
1831     nvenc
1832     vaapi
1833     vdpau
1834     videotoolbox
1835     v4l2_m2m
1836     xvmc
1837 "
1838
1839 # catchall list of things that require external libs to link
1840 EXTRALIBS_LIST="
1841     cpu_init
1842     cws2fws
1843 "
1844
1845 HWACCEL_LIBRARY_NONFREE_LIST="
1846     cuda_nvcc
1847     cuda_sdk
1848     libnpp
1849 "
1850
1851 HWACCEL_LIBRARY_LIST="
1852     $HWACCEL_LIBRARY_NONFREE_LIST
1853     libmfx
1854     mmal
1855     omx
1856     opencl
1857 "
1858
1859 DOCUMENT_LIST="
1860     doc
1861     htmlpages
1862     manpages
1863     podpages
1864     txtpages
1865 "
1866
1867 FEATURE_LIST="
1868     ftrapv
1869     gray
1870     hardcoded_tables
1871     omx_rpi
1872     runtime_cpudetect
1873     safe_bitstream_reader
1874     shared
1875     small
1876     static
1877     swscale_alpha
1878 "
1879
1880 # this list should be kept in linking order
1881 LIBRARY_LIST="
1882     avdevice
1883     avfilter
1884     swscale
1885     postproc
1886     avformat
1887     avcodec
1888     swresample
1889     avresample
1890     avutil
1891 "
1892
1893 LICENSE_LIST="
1894     gpl
1895     nonfree
1896     version3
1897 "
1898
1899 PROGRAM_LIST="
1900     ffplay
1901     ffprobe
1902     ffmpeg
1903 "
1904
1905 SUBSYSTEM_LIST="
1906     dct
1907     dwt
1908     error_resilience
1909     faan
1910     fast_unaligned
1911     fft
1912     lsp
1913     lzo
1914     mdct
1915     pixelutils
1916     network
1917     rdft
1918 "
1919
1920 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1921 CONFIG_LIST="
1922     $DOCUMENT_LIST
1923     $EXAMPLE_LIST
1924     $EXTERNAL_LIBRARY_LIST
1925     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1926     $HWACCEL_LIBRARY_LIST
1927     $HWACCEL_AUTODETECT_LIBRARY_LIST
1928     $FEATURE_LIST
1929     $LICENSE_LIST
1930     $LIBRARY_LIST
1931     $PROGRAM_LIST
1932     $SUBSYSTEM_LIST
1933     autodetect
1934     fontconfig
1935     large_tests
1936     linux_perf
1937     memory_poisoning
1938     neon_clobber_test
1939     ossfuzz
1940     pic
1941     thumb
1942     valgrind_backtrace
1943     xmm_clobber_test
1944     $COMPONENT_LIST
1945 "
1946
1947 THREADS_LIST="
1948     pthreads
1949     os2threads
1950     w32threads
1951 "
1952
1953 ATOMICS_LIST="
1954     atomics_gcc
1955     atomics_suncc
1956     atomics_win32
1957 "
1958
1959 AUTODETECT_LIBS="
1960     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1961     $HWACCEL_AUTODETECT_LIBRARY_LIST
1962     $THREADS_LIST
1963 "
1964
1965 ARCH_LIST="
1966     aarch64
1967     alpha
1968     arm
1969     avr32
1970     avr32_ap
1971     avr32_uc
1972     bfin
1973     ia64
1974     m68k
1975     mips
1976     mips64
1977     parisc
1978     ppc
1979     ppc64
1980     s390
1981     sh4
1982     sparc
1983     sparc64
1984     tilegx
1985     tilepro
1986     tomi
1987     x86
1988     x86_32
1989     x86_64
1990 "
1991
1992 ARCH_EXT_LIST_ARM="
1993     armv5te
1994     armv6
1995     armv6t2
1996     armv8
1997     neon
1998     vfp
1999     vfpv3
2000     setend
2001 "
2002
2003 ARCH_EXT_LIST_MIPS="
2004     mipsfpu
2005     mips32r2
2006     mips32r5
2007     mips64r2
2008     mips32r6
2009     mips64r6
2010     mipsdsp
2011     mipsdspr2
2012     msa
2013     msa2
2014 "
2015
2016 ARCH_EXT_LIST_LOONGSON="
2017     loongson2
2018     loongson3
2019     mmi
2020 "
2021
2022 ARCH_EXT_LIST_X86_SIMD="
2023     aesni
2024     amd3dnow
2025     amd3dnowext
2026     avx
2027     avx2
2028     avx512
2029     fma3
2030     fma4
2031     mmx
2032     mmxext
2033     sse
2034     sse2
2035     sse3
2036     sse4
2037     sse42
2038     ssse3
2039     xop
2040 "
2041
2042 ARCH_EXT_LIST_PPC="
2043     altivec
2044     dcbzl
2045     ldbrx
2046     power8
2047     ppc4xx
2048     vsx
2049 "
2050
2051 ARCH_EXT_LIST_X86="
2052     $ARCH_EXT_LIST_X86_SIMD
2053     cpunop
2054     i686
2055 "
2056
2057 ARCH_EXT_LIST="
2058     $ARCH_EXT_LIST_ARM
2059     $ARCH_EXT_LIST_PPC
2060     $ARCH_EXT_LIST_X86
2061     $ARCH_EXT_LIST_MIPS
2062     $ARCH_EXT_LIST_LOONGSON
2063 "
2064
2065 ARCH_FEATURES="
2066     aligned_stack
2067     fast_64bit
2068     fast_clz
2069     fast_cmov
2070     local_aligned
2071     simd_align_16
2072     simd_align_32
2073     simd_align_64
2074 "
2075
2076 BUILTIN_LIST="
2077     atomic_cas_ptr
2078     machine_rw_barrier
2079     MemoryBarrier
2080     mm_empty
2081     rdtsc
2082     sem_timedwait
2083     sync_val_compare_and_swap
2084 "
2085 HAVE_LIST_CMDLINE="
2086     inline_asm
2087     symver
2088     x86asm
2089 "
2090
2091 HAVE_LIST_PUB="
2092     bigendian
2093     fast_unaligned
2094 "
2095
2096 HEADERS_LIST="
2097     arpa_inet_h
2098     asm_types_h
2099     cdio_paranoia_h
2100     cdio_paranoia_paranoia_h
2101     cuda_h
2102     dispatch_dispatch_h
2103     dev_bktr_ioctl_bt848_h
2104     dev_bktr_ioctl_meteor_h
2105     dev_ic_bt8xx_h
2106     dev_video_bktr_ioctl_bt848_h
2107     dev_video_meteor_ioctl_meteor_h
2108     direct_h
2109     dirent_h
2110     dxgidebug_h
2111     dxva_h
2112     ES2_gl_h
2113     gsm_h
2114     io_h
2115     linux_perf_event_h
2116     machine_ioctl_bt848_h
2117     machine_ioctl_meteor_h
2118     malloc_h
2119     opencv2_core_core_c_h
2120     OpenGL_gl3_h
2121     poll_h
2122     sys_param_h
2123     sys_resource_h
2124     sys_select_h
2125     sys_soundcard_h
2126     sys_time_h
2127     sys_un_h
2128     sys_videoio_h
2129     termios_h
2130     udplite_h
2131     unistd_h
2132     valgrind_valgrind_h
2133     windows_h
2134     winsock2_h
2135 "
2136
2137 INTRINSICS_LIST="
2138     intrinsics_neon
2139 "
2140
2141 COMPLEX_FUNCS="
2142     cabs
2143     cexp
2144 "
2145
2146 MATH_FUNCS="
2147     atanf
2148     atan2f
2149     cbrt
2150     cbrtf
2151     copysign
2152     cosf
2153     erf
2154     exp2
2155     exp2f
2156     expf
2157     hypot
2158     isfinite
2159     isinf
2160     isnan
2161     ldexpf
2162     llrint
2163     llrintf
2164     log2
2165     log2f
2166     log10f
2167     lrint
2168     lrintf
2169     powf
2170     rint
2171     round
2172     roundf
2173     sinf
2174     trunc
2175     truncf
2176 "
2177
2178 SYSTEM_FEATURES="
2179     dos_paths
2180     libc_msvcrt
2181     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2182     section_data_rel_ro
2183     threads
2184     uwp
2185     winrt
2186 "
2187
2188 SYSTEM_FUNCS="
2189     access
2190     aligned_malloc
2191     arc4random
2192     clock_gettime
2193     closesocket
2194     CommandLineToArgvW
2195     fcntl
2196     getaddrinfo
2197     gethrtime
2198     getopt
2199     GetModuleHandle
2200     GetProcessAffinityMask
2201     GetProcessMemoryInfo
2202     GetProcessTimes
2203     getrusage
2204     GetSystemTimeAsFileTime
2205     gettimeofday
2206     glob
2207     glXGetProcAddress
2208     gmtime_r
2209     inet_aton
2210     isatty
2211     kbhit
2212     localtime_r
2213     lstat
2214     lzo1x_999_compress
2215     mach_absolute_time
2216     MapViewOfFile
2217     memalign
2218     mkstemp
2219     mmap
2220     mprotect
2221     nanosleep
2222     PeekNamedPipe
2223     posix_memalign
2224     pthread_cancel
2225     sched_getaffinity
2226     SecItemImport
2227     SetConsoleTextAttribute
2228     SetConsoleCtrlHandler
2229     SetDllDirectory
2230     setmode
2231     setrlimit
2232     Sleep
2233     strerror_r
2234     sysconf
2235     sysctl
2236     usleep
2237     UTGetOSTypeFromString
2238     VirtualAlloc
2239     wglGetProcAddress
2240 "
2241
2242 SYSTEM_LIBRARIES="
2243     bcrypt
2244     vaapi_drm
2245     vaapi_x11
2246     vdpau_x11
2247 "
2248
2249 TOOLCHAIN_FEATURES="
2250     as_arch_directive
2251     as_dn_directive
2252     as_fpu_directive
2253     as_func
2254     as_object_arch
2255     asm_mod_q
2256     blocks_extension
2257     ebp_available
2258     ebx_available
2259     gnu_as
2260     gnu_windres
2261     ibm_asm
2262     inline_asm_direct_symbol_refs
2263     inline_asm_labels
2264     inline_asm_nonlocal_labels
2265     pragma_deprecated
2266     rsync_contimeout
2267     symver_asm_label
2268     symver_gnu_asm
2269     vfp_args
2270     xform_asm
2271     xmm_clobbers
2272 "
2273
2274 TYPES_LIST="
2275     kCMVideoCodecType_HEVC
2276     kCVPixelFormatType_420YpCbCr10BiPlanarVideoRange
2277     kCVImageBufferTransferFunction_SMPTE_ST_2084_PQ
2278     kCVImageBufferTransferFunction_ITU_R_2100_HLG
2279     kCVImageBufferTransferFunction_Linear
2280     socklen_t
2281     struct_addrinfo
2282     struct_group_source_req
2283     struct_ip_mreq_source
2284     struct_ipv6_mreq
2285     struct_msghdr_msg_flags
2286     struct_pollfd
2287     struct_rusage_ru_maxrss
2288     struct_sctp_event_subscribe
2289     struct_sockaddr_in6
2290     struct_sockaddr_sa_len
2291     struct_sockaddr_storage
2292     struct_stat_st_mtim_tv_nsec
2293     struct_v4l2_frmivalenum_discrete
2294 "
2295
2296 HAVE_LIST="
2297     $ARCH_EXT_LIST
2298     $(add_suffix _external $ARCH_EXT_LIST)
2299     $(add_suffix _inline   $ARCH_EXT_LIST)
2300     $ARCH_FEATURES
2301     $BUILTIN_LIST
2302     $COMPLEX_FUNCS
2303     $HAVE_LIST_CMDLINE
2304     $HAVE_LIST_PUB
2305     $HEADERS_LIST
2306     $INTRINSICS_LIST
2307     $MATH_FUNCS
2308     $SYSTEM_FEATURES
2309     $SYSTEM_FUNCS
2310     $SYSTEM_LIBRARIES
2311     $THREADS_LIST
2312     $TOOLCHAIN_FEATURES
2313     $TYPES_LIST
2314     makeinfo
2315     makeinfo_html
2316     opencl_d3d11
2317     opencl_drm_arm
2318     opencl_drm_beignet
2319     opencl_dxva2
2320     opencl_vaapi_beignet
2321     opencl_vaapi_intel_media
2322     perl
2323     pod2man
2324     texi2html
2325 "
2326
2327 # options emitted with CONFIG_ prefix but not available on the command line
2328 CONFIG_EXTRA="
2329     aandcttables
2330     ac3dsp
2331     adts_header
2332     audio_frame_queue
2333     audiodsp
2334     blockdsp
2335     bswapdsp
2336     cabac
2337     cbs
2338     cbs_av1
2339     cbs_h264
2340     cbs_h265
2341     cbs_jpeg
2342     cbs_mpeg2
2343     cbs_vp9
2344     dirac_parse
2345     dnn
2346     dvprofile
2347     exif
2348     faandct
2349     faanidct
2350     fdctdsp
2351     flacdsp
2352     fmtconvert
2353     frame_thread_encoder
2354     g722dsp
2355     golomb
2356     gplv3
2357     h263dsp
2358     h264chroma
2359     h264dsp
2360     h264parse
2361     h264pred
2362     h264qpel
2363     hevcparse
2364     hpeldsp
2365     huffman
2366     huffyuvdsp
2367     huffyuvencdsp
2368     idctdsp
2369     iirfilter
2370     mdct15
2371     intrax8
2372     iso_media
2373     ividsp
2374     jpegtables
2375     lgplv3
2376     libx262
2377     llauddsp
2378     llviddsp
2379     llvidencdsp
2380     lpc
2381     lzf
2382     me_cmp
2383     mpeg_er
2384     mpegaudio
2385     mpegaudiodsp
2386     mpegaudioheader
2387     mpegvideo
2388     mpegvideoenc
2389     mss34dsp
2390     pixblockdsp
2391     qpeldsp
2392     qsv
2393     qsvdec
2394     qsvenc
2395     qsvvpp
2396     rangecoder
2397     riffdec
2398     riffenc
2399     rtpdec
2400     rtpenc_chain
2401     rv34dsp
2402     scene_sad
2403     sinewin
2404     snappy
2405     srtp
2406     startcode
2407     texturedsp
2408     texturedspenc
2409     tpeldsp
2410     vaapi_1
2411     vaapi_encode
2412     vc1dsp
2413     videodsp
2414     vp3dsp
2415     vp56dsp
2416     vp8dsp
2417     wma_freqs
2418     wmv2dsp
2419 "
2420
2421 CMDLINE_SELECT="
2422     $ARCH_EXT_LIST
2423     $CONFIG_LIST
2424     $HAVE_LIST_CMDLINE
2425     $THREADS_LIST
2426     asm
2427     cross_compile
2428     debug
2429     extra_warnings
2430     logging
2431     lto
2432     optimizations
2433     rpath
2434     stripping
2435 "
2436
2437 PATHS_LIST="
2438     bindir
2439     datadir
2440     docdir
2441     incdir
2442     libdir
2443     mandir
2444     pkgconfigdir
2445     prefix
2446     shlibdir
2447     install_name_dir
2448 "
2449
2450 CMDLINE_SET="
2451     $PATHS_LIST
2452     ar
2453     arch
2454     as
2455     assert_level
2456     build_suffix
2457     cc
2458     objcc
2459     cpu
2460     cross_prefix
2461     custom_allocator
2462     cxx
2463     dep_cc
2464     doxygen
2465     env
2466     extra_version
2467     gas
2468     host_cc
2469     host_cflags
2470     host_extralibs
2471     host_ld
2472     host_ldflags
2473     host_os
2474     ignore_tests
2475     install
2476     ld
2477     ln_s
2478     logfile
2479     malloc_prefix
2480     nm
2481     optflags
2482     nvcc
2483     nvccflags
2484     pkg_config
2485     pkg_config_flags
2486     progs_suffix
2487     random_seed
2488     ranlib
2489     samples
2490     strip
2491     sws_max_filter_size
2492     sysinclude
2493     sysroot
2494     target_exec
2495     target_os
2496     target_path
2497     target_samples
2498     tempprefix
2499     toolchain
2500     valgrind
2501     windres
2502     x86asmexe
2503 "
2504
2505 CMDLINE_APPEND="
2506     extra_cflags
2507     extra_cxxflags
2508     extra_objcflags
2509     host_cppflags
2510 "
2511
2512 # code dependency declarations
2513
2514 # architecture extensions
2515
2516 armv5te_deps="arm"
2517 armv6_deps="arm"
2518 armv6t2_deps="arm"
2519 armv8_deps="aarch64"
2520 neon_deps_any="aarch64 arm"
2521 intrinsics_neon_deps="neon"
2522 vfp_deps_any="aarch64 arm"
2523 vfpv3_deps="vfp"
2524 setend_deps="arm"
2525
2526 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2527
2528 altivec_deps="ppc"
2529 dcbzl_deps="ppc"
2530 ldbrx_deps="ppc"
2531 ppc4xx_deps="ppc"
2532 vsx_deps="altivec"
2533 power8_deps="vsx"
2534
2535 loongson2_deps="mips"
2536 loongson3_deps="mips"
2537 mips32r2_deps="mips"
2538 mips32r5_deps="mips"
2539 mips32r6_deps="mips"
2540 mips64r2_deps="mips"
2541 mips64r6_deps="mips"
2542 mipsfpu_deps="mips"
2543 mipsdsp_deps="mips"
2544 mipsdspr2_deps="mips"
2545 mmi_deps="mips"
2546 msa_deps="mipsfpu"
2547 msa2_deps="msa"
2548
2549 cpunop_deps="i686"
2550 x86_64_select="i686"
2551 x86_64_suggest="fast_cmov"
2552
2553 amd3dnow_deps="mmx"
2554 amd3dnowext_deps="amd3dnow"
2555 i686_deps="x86"
2556 mmx_deps="x86"
2557 mmxext_deps="mmx"
2558 sse_deps="mmxext"
2559 sse2_deps="sse"
2560 sse3_deps="sse2"
2561 ssse3_deps="sse3"
2562 sse4_deps="ssse3"
2563 sse42_deps="sse4"
2564 aesni_deps="sse42"
2565 avx_deps="sse42"
2566 xop_deps="avx"
2567 fma3_deps="avx"
2568 fma4_deps="avx"
2569 avx2_deps="avx"
2570 avx512_deps="avx2"
2571
2572 mmx_external_deps="x86asm"
2573 mmx_inline_deps="inline_asm x86"
2574 mmx_suggest="mmx_external mmx_inline"
2575
2576 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2577     eval dep=\$${ext}_deps
2578     eval ${ext}_external_deps='"${dep}_external"'
2579     eval ${ext}_inline_deps='"${dep}_inline"'
2580     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2581 done
2582
2583 aligned_stack_if_any="aarch64 ppc x86"
2584 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2585 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2586 fast_unaligned_if_any="aarch64 ppc x86"
2587 simd_align_16_if_any="altivec neon sse"
2588 simd_align_32_if_any="avx"
2589 simd_align_64_if_any="avx512"
2590
2591 # system capabilities
2592 linux_perf_deps="linux_perf_event_h"
2593 symver_if_any="symver_asm_label symver_gnu_asm"
2594 valgrind_backtrace_conflict="optimizations"
2595 valgrind_backtrace_deps="valgrind_valgrind_h"
2596
2597 # threading support
2598 atomics_gcc_if="sync_val_compare_and_swap"
2599 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2600 atomics_win32_if="MemoryBarrier"
2601 atomics_native_if_any="$ATOMICS_LIST"
2602 w32threads_deps="atomics_native"
2603 threads_if_any="$THREADS_LIST"
2604
2605 # subsystems
2606 cbs_av1_select="cbs"
2607 cbs_h264_select="cbs"
2608 cbs_h265_select="cbs"
2609 cbs_jpeg_select="cbs"
2610 cbs_mpeg2_select="cbs"
2611 cbs_vp9_select="cbs"
2612 dct_select="rdft"
2613 dirac_parse_select="golomb"
2614 dnn_suggest="libtensorflow"
2615 error_resilience_select="me_cmp"
2616 faandct_deps="faan"
2617 faandct_select="fdctdsp"
2618 faanidct_deps="faan"
2619 faanidct_select="idctdsp"
2620 h264dsp_select="startcode"
2621 hevcparse_select="golomb"
2622 frame_thread_encoder_deps="encoders threads"
2623 intrax8_select="blockdsp idctdsp"
2624 mdct_select="fft"
2625 mdct15_select="fft"
2626 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2627 mpeg_er_select="error_resilience"
2628 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2629 mpegaudiodsp_select="dct"
2630 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2631 mpegvideoenc_select="aandcttables me_cmp mpegvideo pixblockdsp qpeldsp"
2632 vc1dsp_select="h264chroma qpeldsp startcode"
2633 rdft_select="fft"
2634
2635 # decoders / encoders
2636 aac_decoder_select="adts_header mdct15 mdct sinewin"
2637 aac_fixed_decoder_select="adts_header mdct sinewin"
2638 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2639 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2640 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2641 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2642 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2643 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2644 acelp_kelvin_decoder_select="audiodsp"
2645 adpcm_g722_decoder_select="g722dsp"
2646 adpcm_g722_encoder_select="g722dsp"
2647 aic_decoder_select="golomb idctdsp"
2648 alac_encoder_select="lpc"
2649 als_decoder_select="bswapdsp"
2650 amrnb_decoder_select="lsp"
2651 amrwb_decoder_select="lsp"
2652 amv_decoder_select="sp5x_decoder exif"
2653 amv_encoder_select="jpegtables mpegvideoenc"
2654 ape_decoder_select="bswapdsp llauddsp"
2655 apng_decoder_deps="zlib"
2656 apng_encoder_deps="zlib"
2657 apng_encoder_select="llvidencdsp"
2658 aptx_decoder_select="audio_frame_queue"
2659 aptx_encoder_select="audio_frame_queue"
2660 aptx_hd_decoder_select="audio_frame_queue"
2661 aptx_hd_encoder_select="audio_frame_queue"
2662 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2663 asv1_encoder_select="aandcttables bswapdsp fdctdsp pixblockdsp"
2664 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2665 asv2_encoder_select="aandcttables bswapdsp fdctdsp pixblockdsp"
2666 atrac1_decoder_select="mdct sinewin"
2667 atrac3_decoder_select="mdct"
2668 atrac3al_decoder_select="mdct"
2669 atrac3p_decoder_select="mdct sinewin"
2670 atrac3pal_decoder_select="mdct sinewin"
2671 atrac9_decoder_select="mdct"
2672 avrn_decoder_select="exif jpegtables"
2673 bink_decoder_select="blockdsp hpeldsp"
2674 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2675 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2676 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2677 clearvideo_decoder_select="idctdsp"
2678 cllc_decoder_select="bswapdsp"
2679 comfortnoise_encoder_select="lpc"
2680 cook_decoder_select="audiodsp mdct sinewin"
2681 cscd_decoder_select="lzo"
2682 cscd_decoder_suggest="zlib"
2683 dca_decoder_select="mdct"
2684 dca_encoder_select="mdct"
2685 dds_decoder_select="texturedsp"
2686 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2687 dnxhd_decoder_select="blockdsp idctdsp"
2688 dnxhd_encoder_select="blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2689 dolby_e_decoder_select="mdct"
2690 dvvideo_decoder_select="dvprofile idctdsp"
2691 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2692 dxa_decoder_deps="zlib"
2693 dxv_decoder_select="lzf texturedsp"
2694 eac3_decoder_select="ac3_decoder"
2695 eac3_encoder_select="ac3_encoder"
2696 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2697 eatgq_decoder_select="aandcttables"
2698 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2699 exr_decoder_deps="zlib"
2700 ffv1_decoder_select="rangecoder"
2701 ffv1_encoder_select="rangecoder"
2702 ffvhuff_decoder_select="huffyuv_decoder"
2703 ffvhuff_encoder_select="huffyuv_encoder"
2704 fic_decoder_select="golomb"
2705 flac_decoder_select="flacdsp"
2706 flac_encoder_select="bswapdsp flacdsp lpc"
2707 flashsv2_decoder_deps="zlib"
2708 flashsv2_encoder_deps="zlib"
2709 flashsv_decoder_deps="zlib"
2710 flashsv_encoder_deps="zlib"
2711 flv_decoder_select="h263_decoder"
2712 flv_encoder_select="h263_encoder"
2713 fourxm_decoder_select="blockdsp bswapdsp"
2714 fraps_decoder_select="bswapdsp huffman"
2715 g2m_decoder_deps="zlib"
2716 g2m_decoder_select="blockdsp idctdsp jpegtables"
2717 g729_decoder_select="audiodsp"
2718 h261_decoder_select="mpegvideo"
2719 h261_encoder_select="mpegvideoenc"
2720 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2721 h263_encoder_select="h263dsp mpegvideoenc"
2722 h263i_decoder_select="h263_decoder"
2723 h263p_decoder_select="h263_decoder"
2724 h263p_encoder_select="h263_encoder"
2725 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2726 h264_decoder_suggest="error_resilience"
2727 hap_decoder_select="snappy texturedsp"
2728 hap_encoder_deps="libsnappy"
2729 hap_encoder_select="texturedspenc"
2730 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2731 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2732 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2733 hymt_decoder_select="huffyuv_decoder"
2734 iac_decoder_select="imc_decoder"
2735 imc_decoder_select="bswapdsp fft mdct sinewin"
2736 imm4_decoder_select="bswapdsp"
2737 imm5_decoder_select="h264_decoder hevc_decoder"
2738 indeo3_decoder_select="hpeldsp"
2739 indeo4_decoder_select="ividsp"
2740 indeo5_decoder_select="ividsp"
2741 interplay_video_decoder_select="hpeldsp"
2742 jpegls_decoder_select="mjpeg_decoder"
2743 jv_decoder_select="blockdsp"
2744 lagarith_decoder_select="llviddsp"
2745 ljpeg_encoder_select="idctdsp jpegtables mpegvideoenc"
2746 lscr_decoder_deps="zlib"
2747 magicyuv_decoder_select="llviddsp"
2748 magicyuv_encoder_select="llvidencdsp"
2749 mdec_decoder_select="blockdsp bswapdsp idctdsp mpegvideo"
2750 metasound_decoder_select="lsp mdct sinewin"
2751 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2752 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2753 mjpeg_encoder_select="jpegtables mpegvideoenc"
2754 mjpegb_decoder_select="mjpeg_decoder"
2755 mlp_decoder_select="mlp_parser"
2756 mlp_encoder_select="lpc audio_frame_queue"
2757 motionpixels_decoder_select="bswapdsp"
2758 mp1_decoder_select="mpegaudio"
2759 mp1float_decoder_select="mpegaudio"
2760 mp2_decoder_select="mpegaudio"
2761 mp2float_decoder_select="mpegaudio"
2762 mp3_decoder_select="mpegaudio"
2763 mp3adu_decoder_select="mpegaudio"
2764 mp3adufloat_decoder_select="mpegaudio"
2765 mp3float_decoder_select="mpegaudio"
2766 mp3on4_decoder_select="mpegaudio"
2767 mp3on4float_decoder_select="mpegaudio"
2768 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2769 mpc8_decoder_select="mpegaudiodsp"
2770 mpegvideo_decoder_select="mpegvideo"
2771 mpeg1video_decoder_select="mpegvideo"
2772 mpeg1video_encoder_select="mpegvideoenc h263dsp"
2773 mpeg2video_decoder_select="mpegvideo"
2774 mpeg2video_encoder_select="mpegvideoenc h263dsp"
2775 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2776 mpeg4_encoder_select="h263_encoder"
2777 msa1_decoder_select="mss34dsp"
2778 mscc_decoder_deps="zlib"
2779 msmpeg4v1_decoder_select="h263_decoder"
2780 msmpeg4v2_decoder_select="h263_decoder"
2781 msmpeg4v2_encoder_select="h263_encoder"
2782 msmpeg4v3_decoder_select="h263_decoder"
2783 msmpeg4v3_encoder_select="h263_encoder"
2784 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2785 mts2_decoder_select="mss34dsp"
2786 mvha_decoder_deps="zlib"
2787 mwsc_decoder_deps="zlib"
2788 mxpeg_decoder_select="mjpeg_decoder"
2789 nellymoser_decoder_select="mdct sinewin"
2790 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2791 nuv_decoder_select="idctdsp lzo"
2792 on2avc_decoder_select="mdct"
2793 opus_decoder_deps="swresample"
2794 opus_decoder_select="mdct15"
2795 opus_encoder_select="audio_frame_queue mdct15"
2796 png_decoder_deps="zlib"
2797 png_encoder_deps="zlib"
2798 png_encoder_select="llvidencdsp"
2799 prores_decoder_select="blockdsp idctdsp"
2800 prores_encoder_select="fdctdsp"
2801 qcelp_decoder_select="lsp"
2802 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2803 ra_144_decoder_select="audiodsp"
2804 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2805 ralf_decoder_select="golomb"
2806 rasc_decoder_deps="zlib"
2807 rawvideo_decoder_select="bswapdsp"
2808 rscc_decoder_deps="zlib"
2809 rtjpeg_decoder_select="me_cmp"
2810 rv10_decoder_select="h263_decoder"
2811 rv10_encoder_select="h263_encoder"
2812 rv20_decoder_select="h263_decoder"
2813 rv20_encoder_select="h263_encoder"
2814 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2815 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2816 screenpresso_decoder_deps="zlib"
2817 shorten_decoder_select="bswapdsp"
2818 sipr_decoder_select="lsp"
2819 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2820 snow_encoder_select="dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2821 sonic_decoder_select="golomb rangecoder"
2822 sonic_encoder_select="golomb rangecoder"
2823 sonic_ls_encoder_select="golomb rangecoder"
2824 sp5x_decoder_select="mjpeg_decoder"
2825 speedhq_decoder_select="mpegvideo"
2826 srgc_decoder_deps="zlib"
2827 svq1_decoder_select="hpeldsp"
2828 svq1_encoder_select="hpeldsp me_cmp mpegvideoenc"
2829 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2830 svq3_decoder_suggest="zlib"
2831 tak_decoder_select="audiodsp"
2832 tdsc_decoder_deps="zlib"
2833 tdsc_decoder_select="mjpeg_decoder"
2834 theora_decoder_select="vp3_decoder"
2835 thp_decoder_select="mjpeg_decoder"
2836 tiff_decoder_select="mjpeg_decoder"
2837 tiff_decoder_suggest="zlib lzma"
2838 tiff_encoder_suggest="zlib"
2839 truehd_decoder_select="mlp_parser"
2840 truehd_encoder_select="lpc audio_frame_queue"
2841 truemotion2_decoder_select="bswapdsp"
2842 truespeech_decoder_select="bswapdsp"
2843 tscc_decoder_deps="zlib"
2844 twinvq_decoder_select="mdct lsp sinewin"
2845 txd_decoder_select="texturedsp"
2846 utvideo_decoder_select="bswapdsp llviddsp"
2847 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2848 vble_decoder_select="llviddsp"
2849 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2850 vc1image_decoder_select="vc1_decoder"
2851 vorbis_decoder_select="mdct"
2852 vorbis_encoder_select="audio_frame_queue mdct"
2853 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2854 vp4_decoder_select="vp3_decoder"
2855 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2856 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2857 vp6a_decoder_select="vp6_decoder"
2858 vp6f_decoder_select="vp6_decoder"
2859 vp7_decoder_select="h264pred videodsp vp8dsp"
2860 vp8_decoder_select="h264pred videodsp vp8dsp"
2861 vp9_decoder_select="videodsp vp9_parser vp9_superframe_split_bsf"
2862 wcmv_decoder_deps="zlib"
2863 webp_decoder_select="vp8_decoder exif"
2864 wmalossless_decoder_select="llauddsp"
2865 wmapro_decoder_select="mdct sinewin wma_freqs"
2866 wmav1_decoder_select="mdct sinewin wma_freqs"
2867 wmav1_encoder_select="mdct sinewin wma_freqs"
2868 wmav2_decoder_select="mdct sinewin wma_freqs"
2869 wmav2_encoder_select="mdct sinewin wma_freqs"
2870 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2871 wmv1_decoder_select="h263_decoder"
2872 wmv1_encoder_select="h263_encoder"
2873 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2874 wmv2_encoder_select="h263_encoder wmv2dsp"
2875 wmv3_decoder_select="vc1_decoder"
2876 wmv3image_decoder_select="wmv3_decoder"
2877 xma1_decoder_select="wmapro_decoder"
2878 xma2_decoder_select="wmapro_decoder"
2879 ylc_decoder_select="bswapdsp"
2880 zerocodec_decoder_deps="zlib"
2881 zlib_decoder_deps="zlib"
2882 zlib_encoder_deps="zlib"
2883 zmbv_decoder_deps="zlib"
2884 zmbv_encoder_deps="zlib"
2885
2886 # hardware accelerators
2887 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2888 cuda_deps="ffnvcodec"
2889 cuvid_deps="ffnvcodec"
2890 d3d11va_deps="dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2891 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32 user32"
2892 ffnvcodec_deps_any="libdl LoadLibrary"
2893 nvdec_deps="ffnvcodec"
2894 vaapi_x11_deps="xlib"
2895 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2896 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2897 xvmc_deps="X11_extensions_XvMClib_h"
2898
2899 h263_vaapi_hwaccel_deps="vaapi"
2900 h263_vaapi_hwaccel_select="h263_decoder"
2901 h263_videotoolbox_hwaccel_deps="videotoolbox"
2902 h263_videotoolbox_hwaccel_select="h263_decoder"
2903 h264_d3d11va_hwaccel_deps="d3d11va"
2904 h264_d3d11va_hwaccel_select="h264_decoder"
2905 h264_d3d11va2_hwaccel_deps="d3d11va"
2906 h264_d3d11va2_hwaccel_select="h264_decoder"
2907 h264_dxva2_hwaccel_deps="dxva2"
2908 h264_dxva2_hwaccel_select="h264_decoder"
2909 h264_nvdec_hwaccel_deps="nvdec"
2910 h264_nvdec_hwaccel_select="h264_decoder"
2911 h264_vaapi_hwaccel_deps="vaapi"
2912 h264_vaapi_hwaccel_select="h264_decoder"
2913 h264_vdpau_hwaccel_deps="vdpau"
2914 h264_vdpau_hwaccel_select="h264_decoder"
2915 h264_videotoolbox_hwaccel_deps="videotoolbox"
2916 h264_videotoolbox_hwaccel_select="h264_decoder"
2917 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2918 hevc_d3d11va_hwaccel_select="hevc_decoder"
2919 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2920 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2921 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2922 hevc_dxva2_hwaccel_select="hevc_decoder"
2923 hevc_nvdec_hwaccel_deps="nvdec"
2924 hevc_nvdec_hwaccel_select="hevc_decoder"
2925 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2926 hevc_vaapi_hwaccel_select="hevc_decoder"
2927 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2928 hevc_vdpau_hwaccel_select="hevc_decoder"
2929 hevc_videotoolbox_hwaccel_deps="videotoolbox"
2930 hevc_videotoolbox_hwaccel_select="hevc_decoder"
2931 mjpeg_nvdec_hwaccel_deps="nvdec"
2932 mjpeg_nvdec_hwaccel_select="mjpeg_decoder"
2933 mjpeg_vaapi_hwaccel_deps="vaapi"
2934 mjpeg_vaapi_hwaccel_select="mjpeg_decoder"
2935 mpeg_xvmc_hwaccel_deps="xvmc"
2936 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2937 mpeg1_nvdec_hwaccel_deps="nvdec"
2938 mpeg1_nvdec_hwaccel_select="mpeg1video_decoder"
2939 mpeg1_vdpau_hwaccel_deps="vdpau"
2940 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2941 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2942 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2943 mpeg1_xvmc_hwaccel_deps="xvmc"
2944 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2945 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2946 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2947 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2948 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2949 mpeg2_dxva2_hwaccel_deps="dxva2"
2950 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2951 mpeg2_nvdec_hwaccel_deps="nvdec"
2952 mpeg2_nvdec_hwaccel_select="mpeg2video_decoder"
2953 mpeg2_vaapi_hwaccel_deps="vaapi"
2954 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2955 mpeg2_vdpau_hwaccel_deps="vdpau"
2956 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2957 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2958 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2959 mpeg2_xvmc_hwaccel_deps="xvmc"
2960 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2961 mpeg4_nvdec_hwaccel_deps="nvdec"
2962 mpeg4_nvdec_hwaccel_select="mpeg4_decoder"
2963 mpeg4_vaapi_hwaccel_deps="vaapi"
2964 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2965 mpeg4_vdpau_hwaccel_deps="vdpau"
2966 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2967 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2968 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2969 vc1_d3d11va_hwaccel_deps="d3d11va"
2970 vc1_d3d11va_hwaccel_select="vc1_decoder"
2971 vc1_d3d11va2_hwaccel_deps="d3d11va"
2972 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2973 vc1_dxva2_hwaccel_deps="dxva2"
2974 vc1_dxva2_hwaccel_select="vc1_decoder"
2975 vc1_nvdec_hwaccel_deps="nvdec"
2976 vc1_nvdec_hwaccel_select="vc1_decoder"
2977 vc1_vaapi_hwaccel_deps="vaapi"
2978 vc1_vaapi_hwaccel_select="vc1_decoder"
2979 vc1_vdpau_hwaccel_deps="vdpau"
2980 vc1_vdpau_hwaccel_select="vc1_decoder"
2981 vp8_nvdec_hwaccel_deps="nvdec"
2982 vp8_nvdec_hwaccel_select="vp8_decoder"
2983 vp8_vaapi_hwaccel_deps="vaapi"
2984 vp8_vaapi_hwaccel_select="vp8_decoder"
2985 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2986 vp9_d3d11va_hwaccel_select="vp9_decoder"
2987 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2988 vp9_d3d11va2_hwaccel_select="vp9_decoder"
2989 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2990 vp9_dxva2_hwaccel_select="vp9_decoder"
2991 vp9_nvdec_hwaccel_deps="nvdec"
2992 vp9_nvdec_hwaccel_select="vp9_decoder"
2993 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2994 vp9_vaapi_hwaccel_select="vp9_decoder"
2995 vp9_vdpau_hwaccel_deps="vdpau VdpPictureInfoVP9"
2996 vp9_vdpau_hwaccel_select="vp9_decoder"
2997 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2998 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2999 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
3000 wmv3_nvdec_hwaccel_select="vc1_nvdec_hwaccel"
3001 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
3002 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
3003
3004 # hardware-accelerated codecs
3005 omx_deps="libdl pthreads"
3006 omx_rpi_select="omx"
3007 qsv_deps="libmfx"
3008 qsvdec_select="qsv"
3009 qsvenc_select="qsv"
3010 qsvvpp_select="qsv"
3011 vaapi_encode_deps="vaapi"
3012 v4l2_m2m_deps="linux_videodev2_h sem_timedwait"
3013
3014 hwupload_cuda_filter_deps="ffnvcodec"
3015 scale_npp_filter_deps="ffnvcodec libnpp"
3016 scale_cuda_filter_deps="ffnvcodec"
3017 scale_cuda_filter_deps_any="cuda_nvcc cuda_llvm"
3018 thumbnail_cuda_filter_deps="ffnvcodec"
3019 thumbnail_cuda_filter_deps_any="cuda_nvcc cuda_llvm"
3020 transpose_npp_filter_deps="ffnvcodec libnpp"
3021
3022 amf_deps_any="libdl LoadLibrary"
3023 nvenc_deps="ffnvcodec"
3024 nvenc_deps_any="libdl LoadLibrary"
3025 nvenc_encoder_deps="nvenc"
3026
3027 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
3028 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
3029 h264_amf_encoder_deps="amf"
3030 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
3031 h264_cuvid_decoder_deps="cuvid"
3032 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
3033 h264_mediacodec_decoder_deps="mediacodec"
3034 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
3035 h264_mmal_decoder_deps="mmal"
3036 h264_nvenc_encoder_deps="nvenc"
3037 h264_omx_encoder_deps="omx"
3038 h264_qsv_decoder_select="h264_mp4toannexb_bsf qsvdec"
3039 h264_qsv_encoder_select="qsvenc"
3040 h264_rkmpp_decoder_deps="rkmpp"
3041 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
3042 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
3043 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
3044 h264_v4l2m2m_decoder_select="h264_mp4toannexb_bsf"
3045 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
3046 hevc_amf_encoder_deps="amf"
3047 hevc_cuvid_decoder_deps="cuvid"
3048 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
3049 hevc_mediacodec_decoder_deps="mediacodec"
3050 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
3051 hevc_nvenc_encoder_deps="nvenc"
3052 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf qsvdec"
3053 hevc_qsv_encoder_select="hevcparse qsvenc"
3054 hevc_rkmpp_decoder_deps="rkmpp"
3055 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
3056 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
3057 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
3058 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
3059 hevc_v4l2m2m_decoder_select="hevc_mp4toannexb_bsf"
3060 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
3061 mjpeg_cuvid_decoder_deps="cuvid"
3062 mjpeg_qsv_decoder_select="qsvdec"
3063 mjpeg_qsv_encoder_deps="libmfx"
3064 mjpeg_qsv_encoder_select="qsvenc"
3065 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
3066 mjpeg_vaapi_encoder_select="cbs_jpeg jpegtables vaapi_encode"
3067 mpeg1_cuvid_decoder_deps="cuvid"
3068 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
3069 mpeg2_crystalhd_decoder_select="crystalhd"
3070 mpeg2_cuvid_decoder_deps="cuvid"
3071 mpeg2_mmal_decoder_deps="mmal"
3072 mpeg2_mediacodec_decoder_deps="mediacodec"
3073 mpeg2_qsv_decoder_select="qsvdec"
3074 mpeg2_qsv_encoder_select="qsvenc"
3075 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
3076 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
3077 mpeg4_crystalhd_decoder_select="crystalhd"
3078 mpeg4_cuvid_decoder_deps="cuvid"
3079 mpeg4_mediacodec_decoder_deps="mediacodec"
3080 mpeg4_mmal_decoder_deps="mmal"
3081 mpeg4_omx_encoder_deps="omx"
3082 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
3083 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
3084 msmpeg4_crystalhd_decoder_select="crystalhd"
3085 nvenc_h264_encoder_select="h264_nvenc_encoder"
3086 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
3087 vc1_crystalhd_decoder_select="crystalhd"
3088 vc1_cuvid_decoder_deps="cuvid"
3089 vc1_mmal_decoder_deps="mmal"
3090 vc1_qsv_decoder_select="qsvdec"
3091 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
3092 vp8_cuvid_decoder_deps="cuvid"
3093 vp8_mediacodec_decoder_deps="mediacodec"
3094 vp8_qsv_decoder_select="qsvdec"
3095 vp8_rkmpp_decoder_deps="rkmpp"
3096 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
3097 vp8_vaapi_encoder_select="vaapi_encode"
3098 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
3099 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
3100 vp9_cuvid_decoder_deps="cuvid"
3101 vp9_mediacodec_decoder_deps="mediacodec"
3102 vp9_qsv_decoder_select="qsvdec"
3103 vp9_rkmpp_decoder_deps="rkmpp"
3104 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
3105 vp9_vaapi_encoder_select="vaapi_encode"
3106 vp9_qsv_encoder_deps="libmfx MFX_CODEC_VP9"
3107 vp9_qsv_encoder_select="qsvenc"
3108 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
3109 wmv3_crystalhd_decoder_select="crystalhd"
3110
3111 # parsers
3112 aac_parser_select="adts_header"
3113 av1_parser_select="cbs_av1"
3114 h264_parser_select="golomb h264dsp h264parse"
3115 hevc_parser_select="hevcparse"
3116 mpegaudio_parser_select="mpegaudioheader"
3117 mpegvideo_parser_select="mpegvideo"
3118 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
3119 vc1_parser_select="vc1dsp"
3120
3121 # bitstream_filters
3122 aac_adtstoasc_bsf_select="adts_header"
3123 av1_frame_merge_bsf_select="cbs_av1"
3124 av1_frame_split_bsf_select="cbs_av1"
3125 av1_metadata_bsf_select="cbs_av1"
3126 eac3_core_bsf_select="ac3_parser"
3127 filter_units_bsf_select="cbs"
3128 h264_metadata_bsf_deps="const_nan"
3129 h264_metadata_bsf_select="cbs_h264"
3130 h264_redundant_pps_bsf_select="cbs_h264"
3131 hevc_metadata_bsf_select="cbs_h265"
3132 mjpeg2jpeg_bsf_select="jpegtables"
3133 mpeg2_metadata_bsf_select="cbs_mpeg2"
3134 trace_headers_bsf_select="cbs"
3135 vp9_metadata_bsf_select="cbs_vp9"
3136
3137 # external libraries
3138 aac_at_decoder_deps="audiotoolbox"
3139 aac_at_decoder_select="aac_adtstoasc_bsf"
3140 ac3_at_decoder_deps="audiotoolbox"
3141 ac3_at_decoder_select="ac3_parser"
3142 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
3143 alac_at_decoder_deps="audiotoolbox"
3144 amr_nb_at_decoder_deps="audiotoolbox"
3145 avisynth_deps_any="libdl LoadLibrary"
3146 avisynth_demuxer_deps="avisynth"
3147 avisynth_demuxer_select="riffdec"
3148 eac3_at_decoder_deps="audiotoolbox"
3149 eac3_at_decoder_select="ac3_parser"
3150 gsm_ms_at_decoder_deps="audiotoolbox"
3151 ilbc_at_decoder_deps="audiotoolbox"
3152 mp1_at_decoder_deps="audiotoolbox"
3153 mp2_at_decoder_deps="audiotoolbox"
3154 mp3_at_decoder_deps="audiotoolbox"
3155 mp1_at_decoder_select="mpegaudioheader"
3156 mp2_at_decoder_select="mpegaudioheader"
3157 mp3_at_decoder_select="mpegaudioheader"
3158 pcm_alaw_at_decoder_deps="audiotoolbox"
3159 pcm_mulaw_at_decoder_deps="audiotoolbox"
3160 qdmc_decoder_select="fft"
3161 qdmc_at_decoder_deps="audiotoolbox"
3162 qdm2_at_decoder_deps="audiotoolbox"
3163 aac_at_encoder_deps="audiotoolbox"
3164 aac_at_encoder_select="audio_frame_queue"
3165 alac_at_encoder_deps="audiotoolbox"
3166 alac_at_encoder_select="audio_frame_queue"
3167 ilbc_at_encoder_deps="audiotoolbox"
3168 ilbc_at_encoder_select="audio_frame_queue"
3169 pcm_alaw_at_encoder_deps="audiotoolbox"
3170 pcm_alaw_at_encoder_select="audio_frame_queue"
3171 pcm_mulaw_at_encoder_deps="audiotoolbox"
3172 pcm_mulaw_at_encoder_select="audio_frame_queue"
3173 chromaprint_muxer_deps="chromaprint"
3174 h264_videotoolbox_encoder_deps="pthreads"
3175 h264_videotoolbox_encoder_select="videotoolbox_encoder"
3176 hevc_videotoolbox_encoder_deps="pthreads"
3177 hevc_videotoolbox_encoder_select="videotoolbox_encoder"
3178 libaom_av1_decoder_deps="libaom"
3179 libaom_av1_encoder_deps="libaom"
3180 libaom_av1_encoder_select="extract_extradata_bsf"
3181 libaribb24_decoder_deps="libaribb24"
3182 libcelt_decoder_deps="libcelt"
3183 libcodec2_decoder_deps="libcodec2"
3184 libcodec2_encoder_deps="libcodec2"
3185 libdav1d_decoder_deps="libdav1d"
3186 libdavs2_decoder_deps="libdavs2"
3187 libfdk_aac_decoder_deps="libfdk_aac"
3188 libfdk_aac_encoder_deps="libfdk_aac"
3189 libfdk_aac_encoder_select="audio_frame_queue"
3190 libgme_demuxer_deps="libgme"
3191 libgsm_decoder_deps="libgsm"
3192 libgsm_encoder_deps="libgsm"
3193 libgsm_ms_decoder_deps="libgsm"
3194 libgsm_ms_encoder_deps="libgsm"
3195 libilbc_decoder_deps="libilbc"
3196 libilbc_encoder_deps="libilbc"
3197 libkvazaar_encoder_deps="libkvazaar"
3198 libmodplug_demuxer_deps="libmodplug"
3199 libmp3lame_encoder_deps="libmp3lame"
3200 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
3201 libopencore_amrnb_decoder_deps="libopencore_amrnb"
3202 libopencore_amrnb_encoder_deps="libopencore_amrnb"
3203 libopencore_amrnb_encoder_select="audio_frame_queue"
3204 libopencore_amrwb_decoder_deps="libopencore_amrwb"
3205 libopenh264_decoder_deps="libopenh264"
3206 libopenh264_decoder_select="h264_mp4toannexb_bsf"
3207 libopenh264_encoder_deps="libopenh264"
3208 libopenjpeg_decoder_deps="libopenjpeg"
3209 libopenjpeg_encoder_deps="libopenjpeg"
3210 libopenmpt_demuxer_deps="libopenmpt"
3211 libopus_decoder_deps="libopus"
3212 libopus_encoder_deps="libopus"
3213 libopus_encoder_select="audio_frame_queue"
3214 librav1e_encoder_deps="librav1e"
3215 librav1e_encoder_select="extract_extradata_bsf"
3216 librsvg_decoder_deps="librsvg"
3217 libshine_encoder_deps="libshine"
3218 libshine_encoder_select="audio_frame_queue"
3219 libspeex_decoder_deps="libspeex"
3220 libspeex_encoder_deps="libspeex"
3221 libspeex_encoder_select="audio_frame_queue"
3222 libtheora_encoder_deps="libtheora"
3223 libtwolame_encoder_deps="libtwolame"
3224 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
3225 libvorbis_decoder_deps="libvorbis"
3226 libvorbis_encoder_deps="libvorbis libvorbisenc"
3227 libvorbis_encoder_select="audio_frame_queue"
3228 libvpx_vp8_decoder_deps="libvpx"
3229 libvpx_vp8_encoder_deps="libvpx"
3230 libvpx_vp9_decoder_deps="libvpx"
3231 libvpx_vp9_encoder_deps="libvpx"
3232 libwavpack_encoder_deps="libwavpack"
3233 libwavpack_encoder_select="audio_frame_queue"
3234 libwebp_encoder_deps="libwebp"
3235 libwebp_anim_encoder_deps="libwebp"
3236 libx262_encoder_deps="libx262"
3237 libx264_encoder_deps="libx264"
3238 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
3239 libx264rgb_encoder_select="libx264_encoder"
3240 libx265_encoder_deps="libx265"
3241 libxavs_encoder_deps="libxavs"
3242 libxavs2_encoder_deps="libxavs2"
3243 libxvid_encoder_deps="libxvid"
3244 libzvbi_teletext_decoder_deps="libzvbi"
3245 vapoursynth_demuxer_deps="vapoursynth"
3246 videotoolbox_suggest="coreservices"
3247 videotoolbox_deps="corefoundation coremedia corevideo"
3248 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
3249
3250 # demuxers / muxers
3251 ac3_demuxer_select="ac3_parser"
3252 act_demuxer_select="riffdec"
3253 aiff_muxer_select="iso_media"
3254 asf_demuxer_select="riffdec"
3255 asf_o_demuxer_select="riffdec"
3256 asf_muxer_select="riffenc"
3257 asf_stream_muxer_select="asf_muxer"
3258 av1_demuxer_select="av1_frame_merge_bsf av1_parser"
3259 avi_demuxer_select="iso_media riffdec exif"
3260 avi_muxer_select="riffenc"
3261 caf_demuxer_select="iso_media riffdec"
3262 caf_muxer_select="iso_media"
3263 dash_muxer_select="mp4_muxer"
3264 dash_demuxer_deps="libxml2"
3265 dirac_demuxer_select="dirac_parser"
3266 dts_demuxer_select="dca_parser"
3267 dtshd_demuxer_select="dca_parser"
3268 dv_demuxer_select="dvprofile"
3269 dv_muxer_select="dvprofile"
3270 dxa_demuxer_select="riffdec"
3271 eac3_demuxer_select="ac3_parser"
3272 f4v_muxer_select="mov_muxer"
3273 fifo_muxer_deps="threads"
3274 flac_demuxer_select="flac_parser"
3275 hds_muxer_select="flv_muxer"
3276 hls_muxer_select="mpegts_muxer"
3277 hls_muxer_suggest="gcrypt openssl"
3278 image2_alias_pix_demuxer_select="image2_demuxer"
3279 image2_brender_pix_demuxer_select="image2_demuxer"
3280 ipod_muxer_select="mov_muxer"
3281 ismv_muxer_select="mov_muxer"
3282 ivf_muxer_select="av1_metadata_bsf vp9_superframe_bsf"
3283 matroska_audio_muxer_select="matroska_muxer"
3284 matroska_demuxer_select="iso_media riffdec"
3285 matroska_demuxer_suggest="bzlib lzo zlib"
3286 matroska_muxer_select="iso_media riffenc"
3287 mmf_muxer_select="riffenc"
3288 mov_demuxer_select="iso_media riffdec"
3289 mov_demuxer_suggest="zlib"
3290 mov_muxer_select="iso_media riffenc rtpenc_chain"
3291 mp3_demuxer_select="mpegaudio_parser"
3292 mp3_muxer_select="mpegaudioheader"
3293 mp4_muxer_select="mov_muxer"
3294 mpegts_demuxer_select="iso_media"
3295 mpegts_muxer_select="adts_muxer latm_muxer"
3296 mpegtsraw_demuxer_select="mpegts_demuxer"
3297 mxf_muxer_select="golomb"
3298 mxf_d10_muxer_select="mxf_muxer"
3299 mxf_opatom_muxer_select="mxf_muxer"
3300 nut_muxer_select="riffenc"
3301 nuv_demuxer_select="riffdec"
3302 oga_muxer_select="ogg_muxer"
3303 ogg_demuxer_select="dirac_parse"
3304 ogv_muxer_select="ogg_muxer"
3305 opus_muxer_select="ogg_muxer"
3306 psp_muxer_select="mov_muxer"
3307 rtp_demuxer_select="sdp_demuxer"
3308 rtp_muxer_select="golomb jpegtables"
3309 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3310 rtsp_demuxer_select="http_protocol rtpdec"
3311 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3312 sap_demuxer_select="sdp_demuxer"
3313 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3314 sdp_demuxer_select="rtpdec"
3315 smoothstreaming_muxer_select="ismv_muxer"
3316 spdif_demuxer_select="adts_header"
3317 spdif_muxer_select="adts_header"
3318 spx_muxer_select="ogg_muxer"
3319 swf_demuxer_suggest="zlib"
3320 tak_demuxer_select="tak_parser"
3321 tg2_muxer_select="mov_muxer"
3322 tgp_muxer_select="mov_muxer"
3323 vobsub_demuxer_select="mpegps_demuxer"
3324 w64_demuxer_select="wav_demuxer"
3325 w64_muxer_select="wav_muxer"
3326 wav_demuxer_select="riffdec"
3327 wav_muxer_select="riffenc"
3328 webm_muxer_select="iso_media riffenc"
3329 webm_dash_manifest_demuxer_select="matroska_demuxer"
3330 wtv_demuxer_select="mpegts_demuxer riffdec"
3331 wtv_muxer_select="mpegts_muxer riffenc"
3332 xmv_demuxer_select="riffdec"
3333 xwma_demuxer_select="riffdec"
3334
3335 # indevs / outdevs
3336 android_camera_indev_deps="android camera2ndk mediandk pthreads"
3337 android_camera_indev_extralibs="-landroid -lcamera2ndk -lmediandk"
3338 alsa_indev_deps="alsa"
3339 alsa_outdev_deps="alsa"
3340 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3341 avfoundation_indev_suggest="coregraphics applicationservices"
3342 avfoundation_indev_extralibs="-framework Foundation"
3343 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3344 caca_outdev_deps="libcaca"
3345 decklink_deps_any="libdl LoadLibrary"
3346 decklink_indev_deps="decklink threads"
3347 decklink_indev_extralibs="-lstdc++"
3348 decklink_outdev_deps="decklink threads"
3349 decklink_outdev_suggest="libklvanc"
3350 decklink_outdev_extralibs="-lstdc++"
3351 dshow_indev_deps="IBaseFilter"
3352 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3353 fbdev_indev_deps="linux_fb_h"
3354 fbdev_outdev_deps="linux_fb_h"
3355 gdigrab_indev_deps="CreateDIBSection"
3356 gdigrab_indev_extralibs="-lgdi32"
3357 gdigrab_indev_select="bmp_decoder"
3358 iec61883_indev_deps="libiec61883"
3359 jack_indev_deps="libjack"
3360 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3361 kmsgrab_indev_deps="libdrm"
3362 lavfi_indev_deps="avfilter"
3363 libcdio_indev_deps="libcdio"
3364 libdc1394_indev_deps="libdc1394"
3365 openal_indev_deps="openal"
3366 opengl_outdev_deps="opengl"
3367 opengl_outdev_suggest="sdl2"
3368 oss_indev_deps_any="sys_soundcard_h"
3369 oss_outdev_deps_any="sys_soundcard_h"
3370 pulse_indev_deps="libpulse"
3371 pulse_outdev_deps="libpulse"
3372 sdl2_outdev_deps="sdl2"
3373 sndio_indev_deps="sndio"
3374 sndio_outdev_deps="sndio"
3375 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3376 v4l2_indev_suggest="libv4l2"
3377 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3378 v4l2_outdev_suggest="libv4l2"
3379 vfwcap_indev_deps="vfw32 vfwcap_defines"
3380 xcbgrab_indev_deps="libxcb"
3381 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3382 xv_outdev_deps="xlib"
3383
3384 # protocols
3385 async_protocol_deps="threads"
3386 bluray_protocol_deps="libbluray"
3387 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3388 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl mbedtls"
3389 ffrtmpcrypt_protocol_select="tcp_protocol"
3390 ffrtmphttp_protocol_conflict="librtmp_protocol"
3391 ffrtmphttp_protocol_select="http_protocol"
3392 ftp_protocol_select="tcp_protocol"
3393 gopher_protocol_select="network"
3394 http_protocol_select="tcp_protocol"
3395 http_protocol_suggest="zlib"
3396 httpproxy_protocol_select="tcp_protocol"
3397 httpproxy_protocol_suggest="zlib"
3398 https_protocol_select="tls_protocol"
3399 https_protocol_suggest="zlib"
3400 icecast_protocol_select="http_protocol"
3401 mmsh_protocol_select="http_protocol"
3402 mmst_protocol_select="network"
3403 rtmp_protocol_conflict="librtmp_protocol"
3404 rtmp_protocol_select="tcp_protocol"
3405 rtmp_protocol_suggest="zlib"
3406 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3407 rtmpe_protocol_suggest="zlib"
3408 rtmps_protocol_conflict="librtmp_protocol"
3409 rtmps_protocol_select="tls_protocol"
3410 rtmps_protocol_suggest="zlib"
3411 rtmpt_protocol_select="ffrtmphttp_protocol"
3412 rtmpt_protocol_suggest="zlib"
3413 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3414 rtmpte_protocol_suggest="zlib"
3415 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3416 rtmpts_protocol_suggest="zlib"
3417 rtp_protocol_select="udp_protocol"
3418 schannel_conflict="openssl gnutls libtls mbedtls"
3419 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3420 sctp_protocol_select="network"
3421 securetransport_conflict="openssl gnutls libtls mbedtls"
3422 srtp_protocol_select="rtp_protocol srtp"
3423 tcp_protocol_select="network"
3424 tls_protocol_deps_any="gnutls openssl schannel securetransport libtls mbedtls"
3425 tls_protocol_select="tcp_protocol"
3426 udp_protocol_select="network"
3427 udplite_protocol_select="network"
3428 unix_protocol_deps="sys_un_h"
3429 unix_protocol_select="network"
3430
3431 # external library protocols
3432 librtmp_protocol_deps="librtmp"
3433 librtmpe_protocol_deps="librtmp"
3434 librtmps_protocol_deps="librtmp"
3435 librtmpt_protocol_deps="librtmp"
3436 librtmpte_protocol_deps="librtmp"
3437 libsmbclient_protocol_deps="libsmbclient gplv3"
3438 libsrt_protocol_deps="libsrt"
3439 libsrt_protocol_select="network"
3440 libssh_protocol_deps="libssh"
3441 libtls_conflict="openssl gnutls mbedtls"
3442 libzmq_protocol_deps="libzmq"
3443 libzmq_protocol_select="network"
3444
3445 # filters
3446 afftdn_filter_deps="avcodec"
3447 afftdn_filter_select="fft"
3448 afftfilt_filter_deps="avcodec"
3449 afftfilt_filter_select="fft"
3450 afir_filter_deps="avcodec"
3451 afir_filter_select="rdft"
3452 amovie_filter_deps="avcodec avformat"
3453 aresample_filter_deps="swresample"
3454 asr_filter_deps="pocketsphinx"
3455 ass_filter_deps="libass"
3456 atempo_filter_deps="avcodec"
3457 atempo_filter_select="rdft"
3458 avgblur_opencl_filter_deps="opencl"
3459 azmq_filter_deps="libzmq"
3460 blackframe_filter_deps="gpl"
3461 bm3d_filter_deps="avcodec"
3462 bm3d_filter_select="dct"
3463 boxblur_filter_deps="gpl"
3464 boxblur_opencl_filter_deps="opencl gpl"
3465 bs2b_filter_deps="libbs2b"
3466 colorkey_opencl_filter_deps="opencl"
3467 colormatrix_filter_deps="gpl"
3468 convolution_opencl_filter_deps="opencl"
3469 convolve_filter_deps="avcodec"
3470 convolve_filter_select="fft"
3471 coreimage_filter_deps="coreimage appkit"
3472 coreimage_filter_extralibs="-framework OpenGL"
3473 coreimagesrc_filter_deps="coreimage appkit"
3474 coreimagesrc_filter_extralibs="-framework OpenGL"
3475 cover_rect_filter_deps="avcodec avformat gpl"
3476 cropdetect_filter_deps="gpl"
3477 deconvolve_filter_deps="avcodec"
3478 deconvolve_filter_select="fft"
3479 deinterlace_qsv_filter_deps="libmfx"
3480 deinterlace_vaapi_filter_deps="vaapi"
3481 delogo_filter_deps="gpl"
3482 denoise_vaapi_filter_deps="vaapi"
3483 derain_filter_select="dnn"
3484 deshake_filter_select="pixelutils"
3485 deshake_opencl_filter_deps="opencl"
3486 dilation_opencl_filter_deps="opencl"
3487 dnn_processing_filter_select="dnn"
3488 drawtext_filter_deps="libfreetype"
3489 drawtext_filter_suggest="libfontconfig libfribidi"
3490 elbg_filter_deps="avcodec"
3491 eq_filter_deps="gpl"
3492 erosion_opencl_filter_deps="opencl"
3493 fftfilt_filter_deps="avcodec"
3494 fftfilt_filter_select="rdft"
3495 fftdnoiz_filter_deps="avcodec"
3496 fftdnoiz_filter_select="fft"
3497 find_rect_filter_deps="avcodec avformat gpl"
3498 firequalizer_filter_deps="avcodec"
3499 firequalizer_filter_select="rdft"
3500 flite_filter_deps="libflite"
3501 framerate_filter_select="scene_sad"
3502 freezedetect_filter_select="scene_sad"
3503 frei0r_filter_deps="frei0r libdl"
3504 frei0r_src_filter_deps="frei0r libdl"
3505 fspp_filter_deps="gpl"
3506 headphone_filter_select="fft"
3507 histeq_filter_deps="gpl"
3508 hqdn3d_filter_deps="gpl"
3509 interlace_filter_deps="gpl"
3510 kerndeint_filter_deps="gpl"
3511 ladspa_filter_deps="ladspa libdl"
3512 lensfun_filter_deps="liblensfun version3"
3513 lv2_filter_deps="lv2"
3514 mcdeint_filter_deps="avcodec gpl"
3515 movie_filter_deps="avcodec avformat"
3516 mpdecimate_filter_deps="gpl"
3517 mpdecimate_filter_select="pixelutils"
3518 minterpolate_filter_select="scene_sad"
3519 mptestsrc_filter_deps="gpl"
3520 negate_filter_deps="lut_filter"
3521 nlmeans_opencl_filter_deps="opencl"
3522 nnedi_filter_deps="gpl"
3523 ocr_filter_deps="libtesseract"
3524 ocv_filter_deps="libopencv"
3525 openclsrc_filter_deps="opencl"
3526 overlay_opencl_filter_deps="opencl"
3527 overlay_qsv_filter_deps="libmfx"
3528 overlay_qsv_filter_select="qsvvpp"
3529 owdenoise_filter_deps="gpl"
3530 pan_filter_deps="swresample"
3531 perspective_filter_deps="gpl"
3532 phase_filter_deps="gpl"
3533 pp7_filter_deps="gpl"
3534 pp_filter_deps="gpl postproc"
3535 prewitt_opencl_filter_deps="opencl"
3536 procamp_vaapi_filter_deps="vaapi"
3537 program_opencl_filter_deps="opencl"
3538 pullup_filter_deps="gpl"
3539 removelogo_filter_deps="avcodec avformat swscale"
3540 repeatfields_filter_deps="gpl"
3541 resample_filter_deps="avresample"
3542 roberts_opencl_filter_deps="opencl"
3543 rubberband_filter_deps="librubberband"
3544 sab_filter_deps="gpl swscale"
3545 scale2ref_filter_deps="swscale"
3546 scale_filter_deps="swscale"
3547 scale_qsv_filter_deps="libmfx"
3548 select_filter_select="scene_sad"
3549 sharpness_vaapi_filter_deps="vaapi"
3550 showcqt_filter_deps="avcodec avformat swscale"
3551 showcqt_filter_suggest="libfontconfig libfreetype"
3552 showcqt_filter_select="fft"
3553 showfreqs_filter_deps="avcodec"
3554 showfreqs_filter_select="fft"
3555 showspatial_filter_select="fft"
3556 showspectrum_filter_deps="avcodec"
3557 showspectrum_filter_select="fft"
3558 showspectrumpic_filter_deps="avcodec"
3559 showspectrumpic_filter_select="fft"
3560 signature_filter_deps="gpl avcodec avformat"
3561 sinc_filter_select="rdft"
3562 smartblur_filter_deps="gpl swscale"
3563 sobel_opencl_filter_deps="opencl"
3564 sofalizer_filter_deps="libmysofa avcodec"
3565 sofalizer_filter_select="fft"
3566 spectrumsynth_filter_deps="avcodec"
3567 spectrumsynth_filter_select="fft"
3568 spp_filter_deps="gpl avcodec"
3569 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3570 sr_filter_deps="avformat swscale"
3571 sr_filter_select="dnn"
3572 stereo3d_filter_deps="gpl"
3573 subtitles_filter_deps="avformat avcodec libass"
3574 super2xsai_filter_deps="gpl"
3575 pixfmts_super2xsai_test_deps="super2xsai_filter"
3576 superequalizer_filter_select="rdft"
3577 surround_filter_select="rdft"
3578 tinterlace_filter_deps="gpl"
3579 tinterlace_merge_test_deps="tinterlace_filter"
3580 tinterlace_pad_test_deps="tinterlace_filter"
3581 tonemap_filter_deps="const_nan"
3582 tonemap_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer_output_hdr_metadata"
3583 tonemap_opencl_filter_deps="opencl const_nan"
3584 transpose_opencl_filter_deps="opencl"
3585 transpose_vaapi_filter_deps="vaapi VAProcPipelineCaps_rotation_flags"
3586 unsharp_opencl_filter_deps="opencl"
3587 uspp_filter_deps="gpl avcodec"
3588 vaguedenoiser_filter_deps="gpl"
3589 vidstabdetect_filter_deps="libvidstab"
3590 vidstabtransform_filter_deps="libvidstab"
3591 libvmaf_filter_deps="libvmaf pthreads"
3592 zmq_filter_deps="libzmq"
3593 zoompan_filter_deps="swscale"
3594 zscale_filter_deps="libzimg const_nan"
3595 scale_vaapi_filter_deps="vaapi"
3596 vpp_qsv_filter_deps="libmfx"
3597 vpp_qsv_filter_select="qsvvpp"
3598 yadif_cuda_filter_deps="ffnvcodec"
3599 yadif_cuda_filter_deps_any="cuda_nvcc cuda_llvm"
3600
3601 # examples
3602 avio_dir_cmd_deps="avformat avutil"
3603 avio_reading_deps="avformat avcodec avutil"
3604 decode_audio_example_deps="avcodec avutil"
3605 decode_video_example_deps="avcodec avutil"
3606 demuxing_decoding_example_deps="avcodec avformat avutil"
3607 encode_audio_example_deps="avcodec avutil"
3608 encode_video_example_deps="avcodec avutil"
3609 extract_mvs_example_deps="avcodec avformat avutil"
3610 filter_audio_example_deps="avfilter avutil"
3611 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3612 filtering_video_example_deps="avfilter avcodec avformat avutil"
3613 http_multiclient_example_deps="avformat avutil fork"
3614 hw_decode_example_deps="avcodec avformat avutil"
3615 metadata_example_deps="avformat avutil"
3616 muxing_example_deps="avcodec avformat avutil swscale"
3617 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3618 remuxing_example_deps="avcodec avformat avutil"
3619 resampling_audio_example_deps="avutil swresample"
3620 scaling_video_example_deps="avutil swscale"
3621 transcode_aac_example_deps="avcodec avformat swresample"
3622 transcoding_example_deps="avfilter avcodec avformat avutil"
3623 vaapi_encode_example_deps="avcodec avutil h264_vaapi_encoder"
3624 vaapi_transcode_example_deps="avcodec avformat avutil h264_vaapi_encoder"
3625
3626 # EXTRALIBS_LIST
3627 cpu_init_extralibs="pthreads_extralibs"
3628 cws2fws_extralibs="zlib_extralibs"
3629
3630 # libraries, in any order
3631 avcodec_deps="avutil"
3632 avcodec_suggest="libm"
3633 avcodec_select="null_bsf"
3634 avdevice_deps="avformat avcodec avutil"
3635 avdevice_suggest="libm"
3636 avfilter_deps="avutil"
3637 avfilter_suggest="libm"
3638 avformat_deps="avcodec avutil"
3639 avformat_suggest="libm network zlib"
3640 avresample_deps="avutil"
3641 avresample_suggest="libm"
3642 avutil_suggest="clock_gettime ffnvcodec libm libdrm libmfx opencl user32 vaapi videotoolbox corefoundation corevideo coremedia bcrypt"
3643 postproc_deps="avutil gpl"
3644 postproc_suggest="libm"
3645 swresample_deps="avutil"
3646 swresample_suggest="libm libsoxr"
3647 swscale_deps="avutil"
3648 swscale_suggest="libm"
3649
3650 avcodec_extralibs="pthreads_extralibs iconv_extralibs dxva2_extralibs"
3651 avfilter_extralibs="pthreads_extralibs"
3652 avutil_extralibs="d3d11va_extralibs nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3653
3654 # programs
3655 ffmpeg_deps="avcodec avfilter avformat"
3656 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3657                hflip_filter null_filter
3658                transpose_filter trim_filter vflip_filter"
3659 ffmpeg_suggest="ole32 psapi shell32"
3660 ffplay_deps="avcodec avformat swscale swresample sdl2"
3661 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3662 ffplay_suggest="shell32"
3663 ffprobe_deps="avcodec avformat"
3664 ffprobe_suggest="shell32"
3665
3666 # documentation
3667 podpages_deps="perl"
3668 manpages_deps="perl pod2man"
3669 htmlpages_deps="perl"
3670 htmlpages_deps_any="makeinfo_html texi2html"
3671 txtpages_deps="perl makeinfo"
3672 doc_deps_any="manpages htmlpages podpages txtpages"
3673
3674 # default parameters
3675
3676 logfile="ffbuild/config.log"
3677
3678 # installation paths
3679 prefix_default="/usr/local"
3680 bindir_default='${prefix}/bin'
3681 datadir_default='${prefix}/share/ffmpeg'
3682 docdir_default='${prefix}/share/doc/ffmpeg'
3683 incdir_default='${prefix}/include'
3684 libdir_default='${prefix}/lib'
3685 mandir_default='${prefix}/share/man'
3686
3687 # toolchain
3688 ar_default="ar"
3689 cc_default="gcc"
3690 cxx_default="g++"
3691 host_cc_default="gcc"
3692 doxygen_default="doxygen"
3693 install="install"
3694 ln_s_default="ln -s -f"
3695 nm_default="nm -g"
3696 pkg_config_default=pkg-config
3697 ranlib_default="ranlib"
3698 strip_default="strip"
3699 version_script='--version-script'
3700 objformat="elf32"
3701 x86asmexe_default="nasm"
3702 windres_default="windres"
3703 striptype="direct"
3704
3705 # OS
3706 target_os_default=$(tolower $(uname -s))
3707 host_os=$target_os_default
3708
3709 # machine
3710 if test "$target_os_default" = aix; then
3711     arch_default=$(uname -p)
3712     strip_default="strip -X32_64"
3713     nm_default="nm -g -X32_64"
3714 else
3715     arch_default=$(uname -m)
3716 fi
3717 cpu="generic"
3718 intrinsics="none"
3719
3720 # configurable options
3721 enable $PROGRAM_LIST
3722 enable $DOCUMENT_LIST
3723 enable $EXAMPLE_LIST
3724 enable $(filter_out avresample $LIBRARY_LIST)
3725 enable stripping
3726
3727 enable asm
3728 enable debug
3729 enable doc
3730 enable faan faandct faanidct
3731 enable large_tests
3732 enable optimizations
3733 enable runtime_cpudetect
3734 enable safe_bitstream_reader
3735 enable static
3736 enable swscale_alpha
3737 enable valgrind_backtrace
3738
3739 sws_max_filter_size_default=256
3740 set_default sws_max_filter_size
3741
3742 # internal components are enabled by default
3743 enable $EXTRALIBS_LIST
3744
3745 # Avoid external, non-system, libraries getting enabled by dependency resolution
3746 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3747
3748 # build settings
3749 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3750 LIBPREF="lib"
3751 LIBSUF=".a"
3752 FULLNAME='$(NAME)$(BUILDSUF)'
3753 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3754 SLIBPREF="lib"
3755 SLIBSUF=".so"
3756 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3757 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3758 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3759 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3760 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3761 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3762 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3763
3764 asflags_filter=echo
3765 cflags_filter=echo
3766 ldflags_filter=echo
3767
3768 AS_C='-c'
3769 AS_O='-o $@'
3770 CC_C='-c'
3771 CC_E='-E -o $@'
3772 CC_O='-o $@'
3773 CXX_C='-c'
3774 CXX_O='-o $@'
3775 OBJCC_C='-c'
3776 OBJCC_E='-E -o $@'
3777 OBJCC_O='-o $@'
3778 X86ASM_O='-o $@'
3779 LD_O='-o $@'
3780 LD_LIB='-l%'
3781 LD_PATH='-L'
3782 HOSTCC_C='-c'
3783 HOSTCC_E='-E -o $@'
3784 HOSTCC_O='-o $@'
3785 HOSTLD_O='-o $@'
3786 NVCC_C='-c'
3787 NVCC_O='-o $@'
3788
3789 host_extralibs='-lm'
3790 host_cflags_filter=echo
3791 host_ldflags_filter=echo
3792
3793 target_path='$(CURDIR)'
3794
3795 # since the object filename is not given with the -MM flag, the compiler
3796 # is only able to print the basename, and we must add the path ourselves
3797 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3798 DEPFLAGS='-MM'
3799
3800 mkdir -p ffbuild
3801
3802 # find source path
3803 if test -f configure; then
3804     source_path=.
3805 elif test -f src/configure; then
3806     source_path=src
3807 else
3808     source_path=$(cd $(dirname "$0"); pwd)
3809     case "$source_path" in
3810         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3811     esac
3812     test -e "$source_path/config.h" &&
3813         die "Out of tree builds are impossible with config.h in source dir."
3814 fi
3815
3816 for v in "$@"; do
3817     r=${v#*=}
3818     l=${v%"$r"}
3819     r=$(sh_quote "$r")
3820     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3821 done
3822
3823 find_things_extern(){
3824     thing=$1
3825     pattern=$2
3826     file=$source_path/$3
3827     out=${4:-$thing}
3828     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$out/p" "$file"
3829 }
3830
3831 find_filters_extern(){
3832     file=$source_path/$1
3833     sed -n 's/^extern AVFilter ff_[avfsinkrc]\{2,5\}_\([[:alnum:]_]\{1,\}\);/\1_filter/p' $file
3834 }
3835
3836 FILTER_LIST=$(find_filters_extern libavfilter/allfilters.c)
3837 OUTDEV_LIST=$(find_things_extern muxer AVOutputFormat libavdevice/alldevices.c outdev)
3838 INDEV_LIST=$(find_things_extern demuxer AVInputFormat libavdevice/alldevices.c indev)
3839 MUXER_LIST=$(find_things_extern muxer AVOutputFormat libavformat/allformats.c)
3840 DEMUXER_LIST=$(find_things_extern demuxer AVInputFormat libavformat/allformats.c)
3841 ENCODER_LIST=$(find_things_extern encoder AVCodec libavcodec/allcodecs.c)
3842 DECODER_LIST=$(find_things_extern decoder AVCodec libavcodec/allcodecs.c)
3843 CODEC_LIST="
3844     $ENCODER_LIST
3845     $DECODER_LIST
3846 "
3847 PARSER_LIST=$(find_things_extern parser AVCodecParser libavcodec/parsers.c)
3848 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3849 HWACCEL_LIST=$(find_things_extern hwaccel AVHWAccel libavcodec/hwaccels.h)
3850 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3851
3852 AVCODEC_COMPONENTS_LIST="
3853     $BSF_LIST
3854     $DECODER_LIST
3855     $ENCODER_LIST
3856     $HWACCEL_LIST
3857     $PARSER_LIST
3858 "
3859
3860 AVDEVICE_COMPONENTS_LIST="
3861     $INDEV_LIST
3862     $OUTDEV_LIST
3863 "
3864
3865 AVFILTER_COMPONENTS_LIST="
3866     $FILTER_LIST
3867 "
3868
3869 AVFORMAT_COMPONENTS_LIST="
3870     $DEMUXER_LIST
3871     $MUXER_LIST
3872     $PROTOCOL_LIST
3873 "
3874
3875 ALL_COMPONENTS="
3876     $AVCODEC_COMPONENTS_LIST
3877     $AVDEVICE_COMPONENTS_LIST
3878     $AVFILTER_COMPONENTS_LIST
3879     $AVFORMAT_COMPONENTS_LIST
3880 "
3881
3882 for n in $COMPONENT_LIST; do
3883     v=$(toupper ${n%s})_LIST
3884     eval enable \$$v
3885     eval ${n}_if_any="\$$v"
3886 done
3887
3888 enable $ARCH_EXT_LIST
3889
3890 die_unknown(){
3891     echo "Unknown option \"$1\"."
3892     echo "See $0 --help for available options."
3893     exit 1
3894 }
3895
3896 print_in_columns() {
3897     tr ' ' '\n' | sort | tr '\r\n' '  ' | awk -v col_width=24 -v width="$ncols" '
3898     {
3899         num_cols = width > col_width ? int(width / col_width) : 1;
3900         num_rows = int((NF + num_cols-1) / num_cols);
3901         y = x = 1;
3902         for (y = 1; y <= num_rows; y++) {
3903             i = y;
3904             for (x = 1; x <= num_cols; x++) {
3905                 if (i <= NF) {
3906                   line = sprintf("%s%-" col_width "s", line, $i);
3907                 }
3908                 i = i + num_rows;
3909             }
3910             print line; line = "";
3911         }
3912     }' | sed 's/ *$//'
3913 }
3914
3915 show_list() {
3916     suffix=_$1
3917     shift
3918     echo $* | sed s/$suffix//g | print_in_columns
3919     exit 0
3920 }
3921
3922 rand_list(){
3923     IFS=', '
3924     set -- $*
3925     unset IFS
3926     for thing; do
3927         comp=${thing%:*}
3928         prob=${thing#$comp}
3929         prob=${prob#:}
3930         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3931         echo "prob ${prob:-0.5}"
3932         printf '%s\n' $comp
3933     done
3934 }
3935
3936 do_random(){
3937     action=$1
3938     shift
3939     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3940     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3941 }
3942
3943 for opt do
3944     optval="${opt#*=}"
3945     case "$opt" in
3946         --extra-ldflags=*)
3947             add_ldflags $optval
3948         ;;
3949         --extra-ldexeflags=*)
3950             add_ldexeflags $optval
3951         ;;
3952         --extra-ldsoflags=*)
3953             add_ldsoflags $optval
3954         ;;
3955         --extra-ldlibflags=*)
3956             warn "The --extra-ldlibflags option is only provided for compatibility and will be\n"\
3957                  "removed in the future. Use --extra-ldsoflags instead."
3958             add_ldsoflags $optval
3959         ;;
3960         --extra-libs=*)
3961             add_extralibs $optval
3962         ;;
3963         --disable-devices)
3964             disable $INDEV_LIST $OUTDEV_LIST
3965         ;;
3966         --enable-debug=*)
3967             debuglevel="$optval"
3968         ;;
3969         --disable-programs)
3970             disable $PROGRAM_LIST
3971         ;;
3972         --disable-everything)
3973             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3974         ;;
3975         --disable-all)
3976             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3977             disable $LIBRARY_LIST $PROGRAM_LIST doc
3978             enable avutil
3979         ;;
3980         --enable-random|--disable-random)
3981             action=${opt%%-random}
3982             do_random ${action#--} $COMPONENT_LIST
3983         ;;
3984         --enable-random=*|--disable-random=*)
3985             action=${opt%%-random=*}
3986             do_random ${action#--} $optval
3987         ;;
3988         --enable-sdl)
3989             enable sdl2
3990         ;;
3991         --enable-*=*|--disable-*=*)
3992             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3993             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3994             eval list=\$$(toupper $thing)_LIST
3995             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3996             list=$(filter "$name" $list)
3997             [ "$list" = "" ] && warn "Option $opt did not match anything"
3998             test $action = enable && warn_if_gets_disabled $list
3999             $action $list
4000         ;;
4001         --enable-yasm|--disable-yasm)
4002             warn "The ${opt} option is only provided for compatibility and will be\n"\
4003                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
4004             test $opt = --enable-yasm && x86asm=yes || x86asm=no
4005         ;;
4006         --yasmexe=*)
4007             warn "The --yasmexe option is only provided for compatibility and will be\n"\
4008                  "removed in the future. Use --x86asmexe instead."
4009             x86asmexe="$optval"
4010         ;;
4011         --enable-?*|--disable-?*)
4012             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
4013             if is_in $option $COMPONENT_LIST; then
4014                 test $action = disable && action=unset
4015                 eval $action \$$(toupper ${option%s})_LIST
4016             elif is_in $option $CMDLINE_SELECT; then
4017                 $action $option
4018             else
4019                 die_unknown $opt
4020             fi
4021         ;;
4022         --list-*)
4023             NAME="${opt#--list-}"
4024             is_in $NAME $COMPONENT_LIST || die_unknown $opt
4025             NAME=${NAME%s}
4026             eval show_list $NAME \$$(toupper $NAME)_LIST
4027         ;;
4028         --help|-h) show_help
4029         ;;
4030         --quiet|-q) quiet=yes
4031         ;;
4032         --fatal-warnings) enable fatal_warnings
4033         ;;
4034         --libfuzzer=*)
4035             libfuzzer_path="$optval"
4036         ;;
4037         *)
4038             optname="${opt%%=*}"
4039             optname="${optname#--}"
4040             optname=$(echo "$optname" | sed 's/-/_/g')
4041             if is_in $optname $CMDLINE_SET; then
4042                 eval $optname='$optval'
4043             elif is_in $optname $CMDLINE_APPEND; then
4044                 append $optname "$optval"
4045             else
4046                 die_unknown $opt
4047             fi
4048         ;;
4049     esac
4050 done
4051
4052 for e in $env; do
4053     eval "export $e"
4054 done
4055
4056 if disabled autodetect; then
4057
4058     # Unless iconv is explicitely disabled by the user, we still want to probe
4059     # for the iconv from the libc.
4060     disabled iconv || enable libc_iconv
4061
4062     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
4063     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
4064 fi
4065 # Mark specifically enabled, but normally autodetected libraries as requested.
4066 for lib in $AUTODETECT_LIBS; do
4067     enabled $lib && request $lib
4068 done
4069 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
4070 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
4071 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
4072
4073 disabled logging && logfile=/dev/null
4074
4075 # command line configuration sanity checks
4076
4077 # we need to build at least one lib type
4078 if ! enabled_any static shared; then
4079     cat <<EOF
4080 At least one library type must be built.
4081 Specify --enable-static to build the static libraries or --enable-shared to
4082 build the shared libraries as well. To only build the shared libraries specify
4083 --disable-static in addition to --enable-shared.
4084 EOF
4085     exit 1
4086 fi
4087
4088 die_license_disabled() {
4089     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
4090 }
4091
4092 die_license_disabled_gpl() {
4093     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
4094 }
4095
4096 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
4097 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
4098
4099 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
4100 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
4101
4102 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4103
4104 if enabled nonfree; then
4105     license="nonfree and unredistributable"
4106 elif enabled gplv3; then
4107     license="GPL version 3 or later"
4108 elif enabled lgplv3; then
4109     license="LGPL version 3 or later"
4110 elif enabled gpl; then
4111     license="GPL version 2 or later"
4112 else
4113     license="LGPL version 2.1 or later"
4114 fi
4115
4116 enabled_all gnutls openssl &&
4117     die "GnuTLS and OpenSSL must not be enabled at the same time."
4118
4119 enabled_all gnutls mbedtls &&
4120     die "GnuTLS and mbedTLS must not be enabled at the same time."
4121
4122 enabled_all openssl mbedtls &&
4123     die "OpenSSL and mbedTLS must not be enabled at the same time."
4124
4125 # Disable all the library-specific components if the library itself
4126 # is disabled, see AVCODEC_LIST and following _LIST variables.
4127
4128 disable_components(){
4129     disabled ${1} && disable $(
4130         eval components="\$$(toupper ${1})_COMPONENTS"
4131         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
4132     )
4133 }
4134
4135 map 'disable_components $v' $LIBRARY_LIST
4136
4137 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
4138 set >> $logfile
4139
4140 test -n "$valgrind" && toolchain="valgrind-memcheck"
4141
4142 enabled ossfuzz && ! echo $CFLAGS | grep -q -- "-fsanitize="  && ! echo $CFLAGS | grep -q -- "-fcoverage-mapping" &&{
4143     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
4144     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
4145 }
4146
4147 case "$toolchain" in
4148     *-asan)
4149         cc_default="${toolchain%-asan}"
4150         add_cflags  -fsanitize=address
4151         add_ldflags -fsanitize=address
4152     ;;
4153     *-msan)
4154         cc_default="${toolchain%-msan}"
4155         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
4156         add_ldflags -fsanitize=memory
4157     ;;
4158     *-tsan)
4159         cc_default="${toolchain%-tsan}"
4160         add_cflags  -fsanitize=thread
4161         add_ldflags -fsanitize=thread
4162         case "$toolchain" in
4163             gcc-tsan)
4164                 add_cflags  -fPIC
4165                 add_ldflags -fPIC
4166                 ;;
4167         esac
4168     ;;
4169     *-usan)
4170         cc_default="${toolchain%-usan}"
4171         add_cflags  -fsanitize=undefined
4172         add_ldflags -fsanitize=undefined
4173     ;;
4174     valgrind-*)
4175         target_exec_default="valgrind"
4176         case "$toolchain" in
4177             valgrind-massif)
4178                 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"
4179                 ;;
4180             valgrind-memcheck)
4181                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
4182                 ;;
4183         esac
4184     ;;
4185     msvc)
4186         # Check whether the current MSVC version needs the C99 converter.
4187         # From MSVC 2013 (compiler major version 18) onwards, it does actually
4188         # support enough of C99 to build ffmpeg. Default to the new
4189         # behaviour if the regexp was unable to match anything, since this
4190         # successfully parses the version number of existing supported
4191         # versions that require the converter (MSVC 2010 and 2012).
4192         cl_major_ver=$(cl.exe 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
4193         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
4194             cc_default="cl.exe"
4195             cxx_default="cl.exe"
4196         else
4197             die "Unsupported MSVC version (2013 or newer required)"
4198         fi
4199         ld_default="$source_path/compat/windows/mslink"
4200         nm_default="dumpbin.exe -symbols"
4201         ar_default="lib.exe"
4202         case "$arch" in
4203         aarch64|arm64)
4204             as_default="armasm64.exe"
4205             ;;
4206         arm*)
4207             as_default="armasm.exe"
4208             ;;
4209         esac
4210         target_os_default="win32"
4211         # Use a relative path for TMPDIR. This makes sure all the
4212         # ffconf temp files are written with a relative path, avoiding
4213         # issues with msys/win32 path conversion for MSVC parameters
4214         # such as -Fo<file> or -out:<file>.
4215         TMPDIR=.
4216     ;;
4217     icl)
4218         cc_default="icl"
4219         ld_default="xilink"
4220         nm_default="dumpbin -symbols"
4221         ar_default="xilib"
4222         target_os_default="win32"
4223         TMPDIR=.
4224     ;;
4225     gcov)
4226         add_cflags  -fprofile-arcs -ftest-coverage
4227         add_ldflags -fprofile-arcs -ftest-coverage
4228     ;;
4229     llvm-cov)
4230         add_cflags -fprofile-arcs -ftest-coverage
4231         add_ldflags --coverage
4232     ;;
4233     hardened)
4234         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
4235         add_cflags   -fno-strict-overflow -fstack-protector-all
4236         add_ldflags  -Wl,-z,relro -Wl,-z,now
4237         add_cflags   -fPIE
4238         add_ldexeflags -fPIE -pie
4239     ;;
4240     ?*)
4241         die "Unknown toolchain $toolchain"
4242     ;;
4243 esac
4244
4245 if test -n "$cross_prefix"; then
4246     test -n "$arch" && test -n "$target_os" ||
4247         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
4248     enable cross_compile
4249 fi
4250
4251 set_default target_os
4252 if test "$target_os" = android; then
4253     cc_default="clang"
4254 fi
4255
4256 ar_default="${cross_prefix}${ar_default}"
4257 cc_default="${cross_prefix}${cc_default}"
4258 cxx_default="${cross_prefix}${cxx_default}"
4259 nm_default="${cross_prefix}${nm_default}"
4260 pkg_config_default="${cross_prefix}${pkg_config_default}"
4261 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
4262     ranlib_default="${cross_prefix}${ranlib_default} -D"
4263 else
4264     ranlib_default="${cross_prefix}${ranlib_default}"
4265 fi
4266 strip_default="${cross_prefix}${strip_default}"
4267 windres_default="${cross_prefix}${windres_default}"
4268
4269 sysinclude_default="${sysroot}/usr/include"
4270
4271 if enabled cuda_sdk; then
4272     warn "Option --enable-cuda-sdk is deprecated. Use --enable-cuda-nvcc instead."
4273     enable cuda_nvcc
4274 fi
4275
4276 if enabled cuda_nvcc; then
4277     nvcc_default="nvcc"
4278     nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
4279 else
4280     nvcc_default="clang"
4281     nvccflags_default="--cuda-gpu-arch=sm_30 -O2"
4282     NVCC_C=""
4283 fi
4284
4285 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
4286     target_exec x86asmexe nvcc
4287 enabled cross_compile || host_cc_default=$cc
4288 set_default host_cc
4289
4290 pkg_config_fail_message=""
4291 if ! $pkg_config --version >/dev/null 2>&1; then
4292     warn "$pkg_config not found, library detection may fail."
4293     pkg_config=false
4294 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
4295     pkg_config_fail_message="
4296 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
4297 fi
4298
4299 if test $doxygen != $doxygen_default && \
4300   ! $doxygen --version >/dev/null 2>&1; then
4301     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
4302 fi
4303
4304 exesuf() {
4305     case $1 in
4306         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
4307     esac
4308 }
4309
4310 EXESUF=$(exesuf $target_os)
4311 HOSTEXESUF=$(exesuf $host_os)
4312
4313 # set temporary file name
4314 : ${TMPDIR:=$TEMPDIR}
4315 : ${TMPDIR:=$TMP}
4316 : ${TMPDIR:=/tmp}
4317
4318 if [ -n "$tempprefix" ] ; then
4319     mktemp(){
4320         tmpname="$tempprefix.${HOSTNAME}.${UID}"
4321         echo "$tmpname"
4322         mkdir "$tmpname"
4323     }
4324 elif ! test_cmd mktemp -u XXXXXX; then
4325     # simple replacement for missing mktemp
4326     # NOT SAFE FOR GENERAL USE
4327     mktemp(){
4328         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
4329         echo "$tmpname"
4330         mkdir "$tmpname"
4331     }
4332 fi
4333
4334 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
4335     die "Unable to create temporary directory in $TMPDIR."
4336
4337 tmpfile(){
4338     tmp="${FFTMPDIR}/test"$2
4339     (set -C; exec > $tmp) 2> /dev/null ||
4340         die "Unable to create temporary file in $FFTMPDIR."
4341     eval $1=$tmp
4342 }
4343
4344 trap 'rm -rf -- "$FFTMPDIR"' EXIT
4345 trap 'exit 2' INT
4346
4347 tmpfile TMPASM .asm
4348 tmpfile TMPC   .c
4349 tmpfile TMPCPP .cpp
4350 tmpfile TMPE   $EXESUF
4351 tmpfile TMPH   .h
4352 tmpfile TMPM   .m
4353 tmpfile TMPCU  .cu
4354 tmpfile TMPO   .o
4355 tmpfile TMPS   .S
4356 tmpfile TMPSH  .sh
4357 tmpfile TMPV   .ver
4358
4359 unset -f mktemp
4360
4361 chmod +x $TMPE
4362
4363 # make sure we can execute files in $TMPDIR
4364 cat > $TMPSH 2>> $logfile <<EOF
4365 #! /bin/sh
4366 EOF
4367 chmod +x $TMPSH >> $logfile 2>&1
4368 if ! $TMPSH >> $logfile 2>&1; then
4369     cat <<EOF
4370 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
4371 variable to another directory and make sure that it is not mounted noexec.
4372 EOF
4373     die "Sanity test failed."
4374 fi
4375
4376 armasm_flags(){
4377     for flag; do
4378         case $flag in
4379             # Filter out MSVC cl.exe options from cflags that shouldn't
4380             # be passed to gas-preprocessor
4381             -M[TD]*)                                            ;;
4382             *)                  echo $flag                      ;;
4383         esac
4384    done
4385 }
4386
4387 cparser_flags(){
4388     for flag; do
4389         case $flag in
4390             -Wno-switch)             echo -Wno-switch-enum ;;
4391             -Wno-format-zero-length) ;;
4392             -Wdisabled-optimization) ;;
4393             -Wno-pointer-sign)       echo -Wno-other ;;
4394             *)                       echo $flag ;;
4395         esac
4396     done
4397 }
4398
4399 msvc_common_flags(){
4400     for flag; do
4401         case $flag in
4402             # In addition to specifying certain flags under the compiler
4403             # specific filters, they must be specified here as well or else the
4404             # generic catch all at the bottom will print the original flag.
4405             -Wall)                ;;
4406             -Wextra)              ;;
4407             -std=c99)             ;;
4408             # Common flags
4409             -fomit-frame-pointer) ;;
4410             -g)                   echo -Z7 ;;
4411             -fno-math-errno)      ;;
4412             -fno-common)          ;;
4413             -fno-signed-zeros)    ;;
4414             -fPIC)                ;;
4415             -mthumb)              ;;
4416             -march=*)             ;;
4417             -lz)                  echo zlib.lib ;;
4418             -lx264)               echo libx264.lib ;;
4419             -lstdc++)             ;;
4420             -l*)                  echo ${flag#-l}.lib ;;
4421             -LARGEADDRESSAWARE)   echo $flag ;;
4422             -L*)                  echo -libpath:${flag#-L} ;;
4423             *)                    echo $flag ;;
4424         esac
4425     done
4426 }
4427
4428 msvc_flags(){
4429     msvc_common_flags "$@"
4430     for flag; do
4431         case $flag in
4432             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4433                                        -wd4554 ;;
4434             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4435                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4436                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4437                                        -wd4307 \
4438                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4439         esac
4440     done
4441 }
4442
4443 icl_flags(){
4444     msvc_common_flags "$@"
4445     for flag; do
4446         case $flag in
4447             # Despite what Intel's documentation says -Wall, which is supported
4448             # on Windows, does enable remarks so disable them here.
4449             -Wall)                echo $flag -Qdiag-disable:remark ;;
4450             -std=c99)             echo -Qstd=c99 ;;
4451             -flto)                echo -ipo ;;
4452         esac
4453     done
4454 }
4455
4456 icc_flags(){
4457     for flag; do
4458         case $flag in
4459             -flto)                echo -ipo ;;
4460             *)                    echo $flag ;;
4461         esac
4462     done
4463 }
4464
4465 suncc_flags(){
4466     for flag; do
4467         case $flag in
4468             -march=*|-mcpu=*)
4469                 case "${flag#*=}" in
4470                     native)                   echo -xtarget=native       ;;
4471                     v9|niagara)               echo -xarch=sparc          ;;
4472                     ultrasparc)               echo -xarch=sparcvis       ;;
4473                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4474                     i586|pentium)             echo -xchip=pentium        ;;
4475                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4476                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4477                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4478                     pentium4*)          echo -xtarget=pentium4           ;;
4479                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4480                     *-sse3)             echo -xarch=sse3                 ;;
4481                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4482                     bonnell)                   echo -xarch=ssse3         ;;
4483                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4484                     westmere)                  echo -xtarget=westmere    ;;
4485                     silvermont)                echo -xarch=sse4_2        ;;
4486                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4487                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4488                                                echo -xarch=avx           ;;
4489                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4490                     btver1)                    echo -xarch=amdsse4a      ;;
4491                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4492                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4493                     k8|opteron|athlon64|athlon-fx)
4494                                                echo -xarch=sse2a         ;;
4495                     athlon*)                   echo -xarch=pentium_proa  ;;
4496                 esac
4497                 ;;
4498             -std=c99)             echo -xc99              ;;
4499             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4500             -fPIC)                echo -KPIC -xcode=pic32 ;;
4501             -W*,*)                echo $flag              ;;
4502             -f*-*|-W*|-mimpure-text)                      ;;
4503             -shared)              echo -G                 ;;
4504             *)                    echo $flag              ;;
4505         esac
4506     done
4507 }
4508
4509 probe_cc(){
4510     pfx=$1
4511     _cc=$2
4512     first=$3
4513
4514     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4515     unset _ld_o _ldflags _ld_lib _ld_path
4516     unset _depflags _DEPCMD _DEPFLAGS
4517     _flags_filter=echo
4518
4519     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4520         true # no-op to avoid reading stdin in following checks
4521     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4522         _type=llvm_gcc
4523         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4524         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4525         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4526         _cflags_speed='-O3'
4527         _cflags_size='-Os'
4528     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4529         _type=gcc
4530         gcc_version=$($_cc --version | head -n1)
4531         gcc_basever=$($_cc -dumpversion)
4532         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4533         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4534         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4535         case $gcc_basever in
4536             2) ;;
4537             2.*) ;;
4538             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4539         esac
4540         if [ "$first" = true ]; then
4541             case $gcc_basever in
4542                 4.2*)
4543                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4544             esac
4545         fi
4546         _cflags_speed='-O3'
4547         _cflags_size='-Os'
4548     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4549         _type=icc
4550         _ident=$($_cc --version | head -n1)
4551         _depflags='-MMD'
4552         _cflags_speed='-O3'
4553         _cflags_size='-Os'
4554         _cflags_noopt='-O1'
4555         _flags_filter=icc_flags
4556     elif $_cc -v 2>&1 | grep -q xlc; then
4557         _type=xlc
4558         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4559         _cflags_speed='-O5'
4560         _cflags_size='-O5 -qcompact'
4561     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4562         test -d "$sysroot" || die "No valid sysroot specified."
4563         _type=armcc
4564         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4565         armcc_conf="$PWD/armcc.conf"
4566         $_cc --arm_linux_configure                 \
4567              --arm_linux_config_file="$armcc_conf" \
4568              --configure_sysroot="$sysroot"        \
4569              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4570              die "Error creating armcc configuration file."
4571         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4572         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4573         as_default="${cross_prefix}gcc"
4574         _depflags='-MMD'
4575         _cflags_speed='-O3'
4576         _cflags_size='-Os'
4577     elif $_cc -v 2>&1 | grep -q clang && ! $_cc -? > /dev/null 2>&1; then
4578         _type=clang
4579         _ident=$($_cc --version 2>/dev/null | head -n1)
4580         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4581         _cflags_speed='-O3'
4582         _cflags_size='-Oz'
4583     elif $_cc -V 2>&1 | grep -q Sun; then
4584         _type=suncc
4585         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4586         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4587         _DEPFLAGS='-xM1 -xc99'
4588         _ldflags='-std=c99'
4589         _cflags_speed='-O5'
4590         _cflags_size='-O5 -xspace'
4591         _flags_filter=suncc_flags
4592     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4593         _type=pathscale
4594         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4595         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4596         _cflags_speed='-O2'
4597         _cflags_size='-Os'
4598         _flags_filter='filter_out -Wdisabled-optimization'
4599     elif $_cc -v 2>&1 | grep -q Open64; then
4600         _type=open64
4601         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4602         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4603         _cflags_speed='-O2'
4604         _cflags_size='-Os'
4605         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4606     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4607         _type=armasm
4608         _ident=$($_cc | head -n1)
4609         # 4509: "This form of conditional instruction is deprecated"
4610         _flags="-nologo -ignore 4509"
4611         _flags_filter=armasm_flags
4612     elif $_cc 2>&1 | grep -q Intel; then
4613         _type=icl
4614         _ident=$($_cc 2>&1 | head -n1)
4615         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4616         # Not only is O3 broken on 13.x+ but it is slower on all previous
4617         # versions (tested) as well.
4618         _cflags_speed="-O2"
4619         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4620         if $_cc 2>&1 | grep -q Linker; then
4621             _ld_o='-out:$@'
4622         else
4623             _ld_o='-Fe$@'
4624         fi
4625         _cc_o='-Fo$@'
4626         _cc_e='-P'
4627         _flags_filter=icl_flags
4628         _ld_lib='lib%.a'
4629         _ld_path='-libpath:'
4630         # -Qdiag-error to make icl error when seeing certain unknown arguments
4631         _flags='-nologo -Qdiag-error:4044,10157'
4632         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4633         # with MSVC which enables it by default.
4634         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4635         disable stripping
4636     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4637         # lld can emulate multiple different linkers; in ms link.exe mode,
4638         # the -? parameter gives the help output which contains an identifyable
4639         # string, while it gives an error in other modes.
4640         _type=lld-link
4641         # The link.exe mode doesn't have a switch for getting the version,
4642         # but we can force it back to gnu mode and get the version from there.
4643         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4644         _ld_o='-out:$@'
4645         _flags_filter=msvc_flags
4646         _ld_lib='lib%.a'
4647         _ld_path='-libpath:'
4648     elif $_cc -nologo- 2>&1 | grep -q Microsoft || { $_cc -v 2>&1 | grep -q clang && $_cc -? > /dev/null 2>&1; }; then
4649         _type=msvc
4650         _ident=$($_cc 2>&1 | head -n1 | tr -d '\r')
4651         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4652         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4653         _cflags_speed="-O2"
4654         _cflags_size="-O1"
4655         _cflags_noopt="-O1"
4656         if $_cc -nologo- 2>&1 | grep -q Linker; then
4657             _ld_o='-out:$@'
4658         else
4659             _ld_o='-Fe$@'
4660         fi
4661         _cc_o='-Fo$@'
4662         _cc_e='-P -Fi$@'
4663         _flags_filter=msvc_flags
4664         _ld_lib='lib%.a'
4665         _ld_path='-libpath:'
4666         _flags='-nologo'
4667         disable stripping
4668     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4669         _type=cparser
4670         _ident=$($_cc --version | head -n1)
4671         _depflags='-MMD'
4672         _cflags_speed='-O4'
4673         _cflags_size='-O2'
4674         _flags_filter=cparser_flags
4675     fi
4676
4677     eval ${pfx}_type=\$_type
4678     eval ${pfx}_ident=\$_ident
4679 }
4680
4681 set_ccvars(){
4682     eval ${1}_C=\${_cc_c-\${${1}_C}}
4683     eval ${1}_E=\${_cc_e-\${${1}_E}}
4684     eval ${1}_O=\${_cc_o-\${${1}_O}}
4685
4686     if [ -n "$_depflags" ]; then
4687         eval ${1}_DEPFLAGS=\$_depflags
4688     else
4689         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4690         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4691         eval DEP${1}FLAGS=\$_flags
4692     fi
4693 }
4694
4695 probe_cc cc "$cc" "true"
4696 cflags_filter=$_flags_filter
4697 cflags_speed=$_cflags_speed
4698 cflags_size=$_cflags_size
4699 cflags_noopt=$_cflags_noopt
4700 add_cflags $_flags $_cflags
4701 cc_ldflags=$_ldflags
4702 set_ccvars CC
4703 set_ccvars CXX
4704
4705 probe_cc hostcc "$host_cc"
4706 host_cflags_filter=$_flags_filter
4707 host_cflags_speed=$_cflags_speed
4708 add_host_cflags  $_flags $_cflags
4709 set_ccvars HOSTCC
4710
4711 test -n "$cc_type" && enable $cc_type ||
4712     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4713
4714 : ${as_default:=$cc}
4715 : ${objcc_default:=$cc}
4716 : ${dep_cc_default:=$cc}
4717 : ${ld_default:=$cc}
4718 : ${host_ld_default:=$host_cc}
4719 set_default ar as objcc dep_cc ld ln_s host_ld windres
4720
4721 probe_cc as "$as"
4722 asflags_filter=$_flags_filter
4723 add_asflags $_flags $_cflags
4724 set_ccvars AS
4725
4726 probe_cc objcc "$objcc"
4727 objcflags_filter=$_flags_filter
4728 add_objcflags $_flags $_cflags
4729 set_ccvars OBJC
4730
4731 probe_cc ld "$ld"
4732 ldflags_filter=$_flags_filter
4733 add_ldflags $_flags $_ldflags
4734 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4735 LD_O=${_ld_o-$LD_O}
4736 LD_LIB=${_ld_lib-$LD_LIB}
4737 LD_PATH=${_ld_path-$LD_PATH}
4738
4739 probe_cc hostld "$host_ld"
4740 host_ldflags_filter=$_flags_filter
4741 add_host_ldflags $_flags $_ldflags
4742 HOSTLD_O=${_ld_o-$HOSTLD_O}
4743
4744 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4745     probe_cc depcc "$dep_cc"
4746     CCDEP=${_DEPCMD:-$DEPCMD}
4747     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4748     DEPCCFLAGS=$_flags
4749 fi
4750
4751 if $ar 2>&1 | grep -q Microsoft; then
4752     arflags="-nologo"
4753     ar_o='-out:$@'
4754 elif $ar 2>&1 | grep -q "\[D\] "; then
4755     arflags="rcD"
4756     ar_o='$@'
4757 else
4758     arflags="rc"
4759     ar_o='$@'
4760 fi
4761
4762 add_cflags $extra_cflags
4763 add_cxxflags $extra_cxxflags
4764 add_objcflags $extra_objcflags
4765 add_asflags $extra_cflags
4766
4767 if test -n "$sysroot"; then
4768     case "$cc_type" in
4769         gcc|llvm_gcc|clang)
4770             add_cppflags --sysroot="$sysroot"
4771             add_ldflags --sysroot="$sysroot"
4772         ;;
4773     esac
4774 fi
4775
4776 if test "$cpu" = host; then
4777     enabled cross_compile &&
4778         die "--cpu=host makes no sense when cross-compiling."
4779
4780     case "$cc_type" in
4781         gcc|llvm_gcc)
4782             check_native(){
4783                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4784                 sed -n "/cc1.*$1=/{
4785                             s/.*$1=\\([^ ]*\\).*/\\1/
4786                             p
4787                             q
4788                         }" $TMPE
4789             }
4790             cpu=$(check_native -march || check_native -mcpu)
4791         ;;
4792         clang)
4793             check_native(){
4794                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4795                 sed -n "/cc1.*-target-cpu /{
4796                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4797                             p
4798                             q
4799                         }" $TMPE
4800             }
4801             cpu=$(check_native -march)
4802         ;;
4803     esac
4804
4805     test "${cpu:-host}" = host &&
4806         die "--cpu=host not supported with compiler $cc"
4807 fi
4808
4809 # Deal with common $arch aliases
4810 case "$arch" in
4811     aarch64|arm64)
4812         arch="aarch64"
4813     ;;
4814     arm*|iPad*|iPhone*)
4815         arch="arm"
4816     ;;
4817     mips*|IP*)
4818         case "$arch" in
4819         *el)
4820             add_cppflags -EL
4821             add_ldflags -EL
4822         ;;
4823         *eb)
4824             add_cppflags -EB
4825             add_ldflags -EB
4826         ;;
4827         esac
4828         arch="mips"
4829     ;;
4830     parisc*|hppa*)
4831         arch="parisc"
4832     ;;
4833     "Power Macintosh"|ppc*|powerpc*)
4834         arch="ppc"
4835     ;;
4836     s390|s390x)
4837         arch="s390"
4838     ;;
4839     sh4|sh)
4840         arch="sh4"
4841     ;;
4842     sun4*|sparc*)
4843         arch="sparc"
4844     ;;
4845     tilegx|tile-gx)
4846         arch="tilegx"
4847     ;;
4848     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4849         arch="x86"
4850     ;;
4851 esac
4852
4853 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4854 enable $arch
4855
4856 # Add processor-specific flags
4857 if enabled aarch64; then
4858
4859     case $cpu in
4860         armv*)
4861             cpuflags="-march=$cpu"
4862         ;;
4863         *)
4864             cpuflags="-mcpu=$cpu"
4865         ;;
4866     esac
4867
4868 elif enabled alpha; then
4869
4870     cpuflags="-mcpu=$cpu"
4871
4872 elif enabled arm; then
4873
4874     check_arm_arch() {
4875         test_cpp_condition stddef.h \
4876             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4877             $cpuflags
4878     }
4879
4880     probe_arm_arch() {
4881         if   check_arm_arch 4;        then echo armv4
4882         elif check_arm_arch 4T;       then echo armv4t
4883         elif check_arm_arch 5;        then echo armv5
4884         elif check_arm_arch 5E;       then echo armv5e
4885         elif check_arm_arch 5T;       then echo armv5t
4886         elif check_arm_arch 5TE;      then echo armv5te
4887         elif check_arm_arch 5TEJ;     then echo armv5te
4888         elif check_arm_arch 6;        then echo armv6
4889         elif check_arm_arch 6J;       then echo armv6j
4890         elif check_arm_arch 6K;       then echo armv6k
4891         elif check_arm_arch 6Z;       then echo armv6z
4892         elif check_arm_arch 6KZ;      then echo armv6zk
4893         elif check_arm_arch 6ZK;      then echo armv6zk
4894         elif check_arm_arch 6T2;      then echo armv6t2
4895         elif check_arm_arch 7;        then echo armv7
4896         elif check_arm_arch 7A  7_A;  then echo armv7-a
4897         elif check_arm_arch 7S;       then echo armv7-a
4898         elif check_arm_arch 7R  7_R;  then echo armv7-r
4899         elif check_arm_arch 7M  7_M;  then echo armv7-m
4900         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4901         elif check_arm_arch 8A  8_A;  then echo armv8-a
4902         fi
4903     }
4904
4905     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4906
4907     case $cpu in
4908         armv*)
4909             cpuflags="-march=$cpu"
4910             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4911         ;;
4912         *)
4913             cpuflags="-mcpu=$cpu"
4914             case $cpu in
4915                 cortex-a*)                               subarch=armv7a  ;;
4916                 cortex-r*)                               subarch=armv7r  ;;
4917                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4918                 arm11*)                                  subarch=armv6   ;;
4919                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4920                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4921                 *)                             subarch=$(probe_arm_arch) ;;
4922             esac
4923         ;;
4924     esac
4925
4926     case "$subarch" in
4927         armv5t*)    enable fast_clz                ;;
4928         armv[6-8]*)
4929             enable fast_clz
4930             disabled fast_unaligned || enable fast_unaligned
4931             ;;
4932     esac
4933
4934 elif enabled avr32; then
4935
4936     case $cpu in
4937         ap7[02]0[0-2])
4938             subarch="avr32_ap"
4939             cpuflags="-mpart=$cpu"
4940         ;;
4941         ap)
4942             subarch="avr32_ap"
4943             cpuflags="-march=$cpu"
4944         ;;
4945         uc3[ab]*)
4946             subarch="avr32_uc"
4947             cpuflags="-mcpu=$cpu"
4948         ;;
4949         uc)
4950             subarch="avr32_uc"
4951             cpuflags="-march=$cpu"
4952         ;;
4953     esac
4954
4955 elif enabled bfin; then
4956
4957     cpuflags="-mcpu=$cpu"
4958
4959 elif enabled mips; then
4960
4961     cpuflags="-march=$cpu"
4962
4963     if [ "$cpu" != "generic" ]; then
4964         disable mips32r2
4965         disable mips32r5
4966         disable mips64r2
4967         disable mips32r6
4968         disable mips64r6
4969         disable loongson2
4970         disable loongson3
4971
4972         case $cpu in
4973             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4974                 enable mips32r2
4975                 disable msa
4976             ;;
4977             p5600|i6400|p6600)
4978                 disable mipsdsp
4979                 disable mipsdspr2
4980             ;;
4981             loongson*)
4982                 enable loongson2
4983                 enable loongson3
4984                 enable local_aligned
4985                 enable simd_align_16
4986                 enable fast_64bit
4987                 enable fast_clz
4988                 enable fast_cmov
4989                 enable fast_unaligned
4990                 disable aligned_stack
4991                 disable mipsdsp
4992                 disable mipsdspr2
4993                 # When gcc version less than 5.3.0, add -fno-expensive-optimizations flag.
4994                 if [ $cc == gcc ]; then
4995                     gcc_version=$(gcc -dumpversion)
4996                     if [ "$(echo "$gcc_version 5.3.0" | tr " " "\n" | sort -rV | head -n 1)" == "$gcc_version" ]; then
4997                         expensive_optimization_flag=""
4998                     else
4999                         expensive_optimization_flag="-fno-expensive-optimizations"
5000                     fi
5001                 fi
5002                 case $cpu in
5003                     loongson3*)
5004                         cpuflags="-march=loongson3a -mhard-float $expensive_optimization_flag"
5005                     ;;
5006                     loongson2e)
5007                         cpuflags="-march=loongson2e -mhard-float $expensive_optimization_flag"
5008                     ;;
5009                     loongson2f)
5010                         cpuflags="-march=loongson2f -mhard-float $expensive_optimization_flag"
5011                     ;;
5012                 esac
5013             ;;
5014             *)
5015                 # Unknown CPU. Disable everything.
5016                 warn "unknown CPU. Disabling all MIPS optimizations."
5017                 disable mipsfpu
5018                 disable mipsdsp
5019                 disable mipsdspr2
5020                 disable msa
5021                 disable mmi
5022             ;;
5023         esac
5024
5025         case $cpu in
5026             24kc)
5027                 disable mipsfpu
5028                 disable mipsdsp
5029                 disable mipsdspr2
5030             ;;
5031             24kf*)
5032                 disable mipsdsp
5033                 disable mipsdspr2
5034             ;;
5035             24kec|34kc|1004kc)
5036                 disable mipsfpu
5037                 disable mipsdspr2
5038             ;;
5039             24kef*|34kf*|1004kf*)
5040                 disable mipsdspr2
5041             ;;
5042             74kc)
5043                 disable mipsfpu
5044             ;;
5045             p5600)
5046                 enable mips32r5
5047                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
5048             ;;
5049             i6400)
5050                 enable mips64r6
5051                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
5052             ;;
5053             p6600)
5054                 enable mips64r6
5055                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
5056             ;;
5057         esac
5058     else
5059         # We do not disable anything. Is up to the user to disable the unwanted features.
5060         warn 'generic cpu selected'
5061     fi
5062
5063 elif enabled ppc; then
5064
5065     disable ldbrx
5066
5067     case $(tolower $cpu) in
5068         601|ppc601|powerpc601)
5069             cpuflags="-mcpu=601"
5070             disable altivec
5071         ;;
5072         603*|ppc603*|powerpc603*)
5073             cpuflags="-mcpu=603"
5074             disable altivec
5075         ;;
5076         604*|ppc604*|powerpc604*)
5077             cpuflags="-mcpu=604"
5078             disable altivec
5079         ;;
5080         g3|75*|ppc75*|powerpc75*)
5081             cpuflags="-mcpu=750"
5082             disable altivec
5083         ;;
5084         g4|745*|ppc745*|powerpc745*)
5085             cpuflags="-mcpu=7450"
5086             disable vsx
5087         ;;
5088         74*|ppc74*|powerpc74*)
5089             cpuflags="-mcpu=7400"
5090             disable vsx
5091         ;;
5092         g5|970|ppc970|powerpc970)
5093             cpuflags="-mcpu=970"
5094             disable vsx
5095         ;;
5096         power[3-6]*)
5097             cpuflags="-mcpu=$cpu"
5098             disable vsx
5099         ;;
5100         power[7-8]*)
5101             cpuflags="-mcpu=$cpu"
5102         ;;
5103         cell)
5104             cpuflags="-mcpu=cell"
5105             enable ldbrx
5106             disable vsx
5107         ;;
5108         e500mc)
5109             cpuflags="-mcpu=e500mc"
5110             disable altivec
5111         ;;
5112         e500v2)
5113             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
5114             disable altivec
5115             disable dcbzl
5116         ;;
5117         e500)
5118             cpuflags="-mcpu=8540 -mhard-float"
5119             disable altivec
5120             disable dcbzl
5121         ;;
5122     esac
5123
5124 elif enabled sparc; then
5125
5126     case $cpu in
5127         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
5128             cpuflags="-mcpu=$cpu"
5129         ;;
5130         ultrasparc*|niagara[234])
5131             cpuflags="-mcpu=$cpu"
5132         ;;
5133     esac
5134
5135 elif enabled x86; then
5136
5137     case $cpu in
5138         i[345]86|pentium)
5139             cpuflags="-march=$cpu"
5140             disable i686
5141             disable mmx
5142         ;;
5143         # targets that do NOT support nopl and conditional mov (cmov)
5144         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
5145             cpuflags="-march=$cpu"
5146             disable i686
5147         ;;
5148         # targets that do support nopl and conditional mov (cmov)
5149         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
5150         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
5151         |amdfam10|barcelona|b[dt]ver*|znver*)
5152             cpuflags="-march=$cpu"
5153             enable i686
5154             enable fast_cmov
5155         ;;
5156         # targets that do support conditional mov but on which it's slow
5157         pentium4|pentium4m|prescott|nocona)
5158             cpuflags="-march=$cpu"
5159             enable i686
5160             disable fast_cmov
5161         ;;
5162     esac
5163
5164 fi
5165
5166 if [ "$cpu" != generic ]; then
5167     add_cflags  $cpuflags
5168     add_asflags $cpuflags
5169     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
5170 fi
5171
5172 # compiler sanity check
5173 test_exec <<EOF
5174 int main(void){ return 0; }
5175 EOF
5176 if test "$?" != 0; then
5177     echo "$cc is unable to create an executable file."
5178     if test -z "$cross_prefix" && ! enabled cross_compile ; then
5179         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
5180         echo "Only do this if you know what cross compiling means."
5181     fi
5182     die "C compiler test failed."
5183 fi
5184
5185 add_cppflags -D_ISOC99_SOURCE
5186 add_cxxflags -D__STDC_CONSTANT_MACROS
5187 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
5188
5189 # some compilers silently accept -std=c11, so we also need to check that the
5190 # version macro is defined properly
5191 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
5192     add_cflags -std=c11 ||
5193     check_cflags -std=c99
5194
5195 check_cppflags -D_FILE_OFFSET_BITS=64
5196 check_cppflags -D_LARGEFILE_SOURCE
5197
5198 add_host_cppflags -D_ISOC99_SOURCE
5199 check_host_cflags -std=c99
5200 check_host_cflags -Wall
5201 check_host_cflags $host_cflags_speed
5202
5203 check_64bit(){
5204     arch32=$1
5205     arch64=$2
5206     expr=${3:-'sizeof(void *) > 4'}
5207     test_code cc "" "int test[2*($expr) - 1]" &&
5208         subarch=$arch64 || subarch=$arch32
5209     enable $subarch
5210 }
5211
5212 case "$arch" in
5213     aarch64|alpha|ia64)
5214         enabled shared && enable_weak pic
5215     ;;
5216     mips)
5217         check_64bit mips mips64 '_MIPS_SIM > 1'
5218         enabled shared && enable_weak pic
5219     ;;
5220     parisc)
5221         check_64bit parisc parisc64
5222         enabled shared && enable_weak pic
5223     ;;
5224     ppc)
5225         check_64bit ppc ppc64
5226         enabled shared && enable_weak pic
5227     ;;
5228     s390)
5229         check_64bit s390 s390x
5230         enabled shared && enable_weak pic
5231     ;;
5232     sparc)
5233         check_64bit sparc sparc64
5234         enabled shared && enable_weak pic
5235     ;;
5236     x86)
5237         check_64bit x86_32 x86_64
5238         # Treat x32 as x64 for now. Note it also needs pic if shared
5239         test "$subarch" = "x86_32" && test_cpp_condition stddef.h 'defined(__x86_64__)' &&
5240             subarch=x86_64 && enable x86_64 && disable x86_32
5241         if enabled x86_64; then
5242             enabled shared && enable_weak pic
5243             objformat=elf64
5244         fi
5245     ;;
5246 esac
5247
5248 # OS specific
5249 case $target_os in
5250     aix)
5251         SHFLAGS=-shared
5252         add_cppflags '-I\$(SRC_PATH)/compat/aix'
5253         enabled shared && add_ldflags -Wl,-brtl
5254         arflags='-Xany -r -c'
5255         striptype=""
5256         ;;
5257     android)
5258         disable symver
5259         enable section_data_rel_ro
5260         add_cflags -fPIE
5261         add_ldexeflags -fPIE -pie
5262         SLIB_INSTALL_NAME='$(SLIBNAME)'
5263         SLIB_INSTALL_LINKS=
5264         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
5265         ;;
5266     haiku)
5267         prefix_default="/boot/common"
5268         network_extralibs="-lnetwork"
5269         host_extralibs=
5270         ;;
5271     sunos)
5272         SHFLAGS='-shared -Wl,-h,$$(@F)'
5273         enabled x86 && append SHFLAGS -mimpure-text
5274         network_extralibs="-lsocket -lnsl"
5275         add_cppflags -D__EXTENSIONS__
5276         # When using suncc to build, the Solaris linker will mark
5277         # an executable with each instruction set encountered by
5278         # the Solaris assembler.  As our libraries contain their own
5279         # guards for processor-specific code, instead suppress
5280         # generation of the HWCAPS ELF section on Solaris x86 only.
5281         enabled_all suncc x86 &&
5282             echo "hwcap_1 = OVERRIDE;" > mapfile &&
5283             add_ldflags -Wl,-M,mapfile
5284         nm_default='nm -P -g'
5285         striptype=""
5286         version_script='-M'
5287         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
5288         ;;
5289     netbsd)
5290         disable symver
5291         oss_indev_extralibs="-lossaudio"
5292         oss_outdev_extralibs="-lossaudio"
5293         enabled gcc || check_ldflags -Wl,-zmuldefs
5294         ;;
5295     openbsd|bitrig)
5296         disable symver
5297         striptype=""
5298         SHFLAGS='-shared'
5299         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
5300         SLIB_INSTALL_LINKS=
5301         oss_indev_extralibs="-lossaudio"
5302         oss_outdev_extralibs="-lossaudio"
5303         ;;
5304     dragonfly)
5305         disable symver
5306         ;;
5307     freebsd)
5308         ;;
5309     bsd/os)
5310         add_extralibs -lpoll -lgnugetopt
5311         strip="strip -d"
5312         ;;
5313     darwin)
5314         enabled ppc && add_asflags -force_cpusubtype_ALL
5315         install_name_dir_default='$(SHLIBDIR)'
5316         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
5317         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
5318         strip="${strip} -x"
5319         add_ldflags -Wl,-dynamic,-search_paths_first
5320         check_cflags -Werror=partial-availability
5321         SLIBSUF=".dylib"
5322         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
5323         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
5324         enabled x86_64 && objformat="macho64" || objformat="macho32"
5325         enabled_any pic shared x86_64 ||
5326             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
5327         check_headers dispatch/dispatch.h &&
5328             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
5329         if test -n "$sysroot"; then
5330             is_in -isysroot $cc $CPPFLAGS $CFLAGS || check_cppflags -isysroot $sysroot
5331             is_in -isysroot $ld $LDFLAGS          || check_ldflags  -isysroot $sysroot
5332         fi
5333         version_script='-exported_symbols_list'
5334         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
5335         ;;
5336     msys*)
5337         die "Native MSYS builds are discouraged, please use the MINGW environment."
5338         ;;
5339     mingw32*|mingw64*)
5340         target_os=mingw32
5341         LIBTARGET=i386
5342         if enabled x86_64; then
5343             LIBTARGET="i386:x86-64"
5344         elif enabled arm; then
5345             LIBTARGET="arm"
5346         elif enabled aarch64; then
5347             LIBTARGET="arm64"
5348         fi
5349         if enabled shared; then
5350             # Cannot build both shared and static libs when using dllimport.
5351             disable static
5352         fi
5353         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5354         enabled x86_32 && check_ldflags -Wl,--large-address-aware
5355         shlibdir_default="$bindir_default"
5356         SLIBPREF=""
5357         SLIBSUF=".dll"
5358         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5359         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5360         if test_cmd lib.exe -list; then
5361             SLIB_EXTRA_CMD=-'lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5362             if enabled x86_64; then
5363                 LIBTARGET=x64
5364             fi
5365         else
5366             SLIB_EXTRA_CMD=-'$(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
5367         fi
5368         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5369         SLIB_INSTALL_LINKS=
5370         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5371         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5372         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" AR="$(AR_CMD)" NM="$(NM_CMD)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5373         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--disable-auto-image-base $$(@:$(SLIBSUF)=.def)'
5374         enabled x86_64 && objformat="win64" || objformat="win32"
5375         dlltool="${cross_prefix}dlltool"
5376         ranlib=:
5377         enable dos_paths
5378         check_ldflags -Wl,--nxcompat,--dynamicbase
5379         # Lets work around some stupidity in binutils.
5380         # ld will strip relocations from executables even though we need them
5381         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
5382         # however ld then forgets what the entry point should be (oops) so we
5383         # have to manually (re)set it.
5384         if enabled x86_32; then
5385             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
5386         elif enabled x86_64; then
5387             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
5388             check_ldflags -Wl,--high-entropy-va # binutils 2.25
5389             # Set image base >4GB for extra entropy with HEASLR
5390             add_ldexeflags -Wl,--image-base,0x140000000
5391             append SHFLAGS -Wl,--image-base,0x180000000
5392         fi
5393         ;;
5394     win32|win64)
5395         disable symver
5396         if enabled shared; then
5397             # Link to the import library instead of the normal static library
5398             # for shared libs.
5399             LD_LIB='%.lib'
5400             # Cannot build both shared and static libs with MSVC or icl.
5401             disable static
5402         fi
5403         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
5404         shlibdir_default="$bindir_default"
5405         SLIBPREF=""
5406         SLIBSUF=".dll"
5407         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5408         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5409         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5410         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5411         SLIB_INSTALL_LINKS=
5412         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5413         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5414         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5415         enabled x86_64 && objformat="win64" || objformat="win32"
5416         ranlib=:
5417         enable dos_paths
5418         ;;
5419     cygwin*)
5420         target_os=cygwin
5421         shlibdir_default="$bindir_default"
5422         SLIBPREF="cyg"
5423         SLIBSUF=".dll"
5424         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5425         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5426         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5427         SLIB_INSTALL_LINKS=
5428         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
5429         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
5430         enabled x86_64 && objformat="win64" || objformat="win32"
5431         enable dos_paths
5432         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5433         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5434         ;;
5435     *-dos|freedos|opendos)
5436         network_extralibs="-lsocket"
5437         objformat="coff"
5438         enable dos_paths
5439         ;;
5440     linux)
5441         enable section_data_rel_ro
5442         enabled_any arm aarch64 && enable_weak linux_perf
5443         ;;
5444     irix*)
5445         target_os=irix
5446         ranlib="echo ignoring ranlib"
5447         ;;
5448     os/2*)
5449         strip="lxlite -CS"
5450         striptype=""
5451         objformat="aout"
5452         add_cppflags -D_GNU_SOURCE
5453         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
5454         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
5455         LIBSUF="_s.a"
5456         SLIBPREF=""
5457         SLIBSUF=".dll"
5458         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5459         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
5460         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
5461             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
5462             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
5463             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
5464             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
5465         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
5466             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
5467         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5468         SLIB_INSTALL_LINKS=
5469         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
5470         enable dos_paths
5471         enable_weak os2threads
5472         ;;
5473     gnu/kfreebsd)
5474         add_cppflags -D_BSD_SOURCE
5475         ;;
5476     gnu)
5477         ;;
5478     qnx)
5479         add_cppflags -D_QNX_SOURCE
5480         network_extralibs="-lsocket"
5481         ;;
5482     symbian)
5483         SLIBSUF=".dll"
5484         enable dos_paths
5485         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
5486         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
5487         add_ldflags -Wl,--target1-abs,--no-undefined \
5488                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
5489                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
5490         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
5491                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
5492                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
5493         ;;
5494     minix)
5495         ;;
5496     none)
5497         ;;
5498     *)
5499         die "Unknown OS '$target_os'."
5500         ;;
5501 esac
5502
5503 # test if creating links works
5504 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5505 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5506 mkdir "$link_dest"
5507 $ln_s "$link_dest" "$link_name"
5508 touch "$link_dest/test_file"
5509 if [ "$source_path" != "." ] && [ "$source_path" != "src" ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5510     # create link to source path
5511     [ -e src ] && rm src
5512     $ln_s "$source_path" src
5513     source_link=src
5514 else
5515     # creating directory links doesn't work
5516     # fall back to using the full source path
5517     source_link="$source_path"
5518 fi
5519 # cleanup
5520 rm -r "$link_dest"
5521 rm -r "$link_name"
5522
5523 # determine libc flavour
5524
5525 probe_libc(){
5526     pfx=$1
5527     pfx_no_=${pfx%_}
5528     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5529     if test_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5530         eval ${pfx}libc_type=uclibc
5531         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5532     elif test_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5533         eval ${pfx}libc_type=glibc
5534         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5535     # MinGW headers can be installed on Cygwin, so check for newlib first.
5536     elif test_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5537         eval ${pfx}libc_type=newlib
5538         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
5539     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5540     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5541         eval ${pfx}libc_type=mingw64
5542         if test_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5543             add_compat msvcrt/snprintf.o
5544             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5545         fi
5546         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5547         eval test \$${pfx_no_}cc_type = "gcc" &&
5548             add_${pfx}cppflags -D__printf__=__gnu_printf__
5549         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5550             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5551         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5552     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5553          test_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5554         eval ${pfx}libc_type=mingw32
5555         test_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5556             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5557             die "ERROR: MinGW32 runtime version must be >= 3.15."
5558         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5559         test_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
5560             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5561         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5562             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5563         eval test \$${pfx_no_}cc_type = "gcc" &&
5564             add_${pfx}cppflags -D__printf__=__gnu_printf__
5565         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5566     elif test_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5567         eval ${pfx}libc_type=msvcrt
5568         if test_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5569             if [ "$pfx" = host_ ]; then
5570                 add_host_cppflags -Dsnprintf=_snprintf
5571             else
5572                 add_compat strtod.o strtod=avpriv_strtod
5573                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5574                                              _snprintf=avpriv_snprintf  \
5575                                              vsnprintf=avpriv_vsnprintf
5576             fi
5577         fi
5578         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5579         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5580         # 0x601 by default unless something else is set by the user.
5581         # This can easily lead to us detecting functions only present
5582         # in such new versions and producing binaries requiring windows 7.0.
5583         # Therefore explicitly set the default to Vista unless the user has
5584         # set something else on the command line.
5585         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5586         # family. For these cases, configure is free to use any functions
5587         # found in the SDK headers by default. (Alternatively, we could force
5588         # _WIN32_WINNT to 0x0602 in that case.)
5589         test_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5590             { test_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0600; }
5591 #ifdef WINAPI_FAMILY
5592 #include <winapifamily.h>
5593 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5594 #error not desktop
5595 #endif
5596 #endif
5597 EOF
5598         if [ "$pfx" = "" ]; then
5599             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5600             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5601         fi
5602     elif test_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5603         eval ${pfx}libc_type=klibc
5604     elif test_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5605         eval ${pfx}libc_type=bionic
5606     elif test_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5607         eval ${pfx}libc_type=solaris
5608         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5609     elif test_${pfx}cpp_condition sys/version.h "defined __DJGPP__"; then
5610         eval ${pfx}libc_type=djgpp
5611         add_cppflags -U__STRICT_ANSI__
5612         add_cflags "-include $source_path/compat/djgpp/math.h"
5613         add_compat djgpp/math.o
5614     fi
5615     test_${pfx}cc <<EOF
5616 #include <time.h>
5617 void *v = localtime_r;
5618 EOF
5619 test "$?" != 0 && test_${pfx}cc -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 <<EOF && add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5620 #include <time.h>
5621 void *v = localtime_r;
5622 EOF
5623
5624     eval test -n "\${${pfx}libc_type}" && enable ${pfx}libc_${libc_type}
5625 }
5626
5627 probe_libc
5628 probe_libc host_
5629
5630 # hacks for compiler/libc/os combinations
5631
5632 case $libc_type in
5633     bionic)
5634         add_compat strtod.o strtod=avpriv_strtod
5635         ;;
5636 esac
5637
5638 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5639     add_cppflags '-I\$(SRC_PATH)/compat/float'
5640
5641 test_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5642
5643 set_default libdir
5644 : ${shlibdir_default:="$libdir"}
5645 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5646
5647 set_default $PATHS_LIST
5648 set_default nm
5649
5650 disabled optimizations || enabled ossfuzz || check_cflags -fomit-frame-pointer
5651
5652 enable_weak_pic() {
5653     disabled pic && return
5654     enable pic
5655     add_cppflags -DPIC
5656     case "$target_os" in
5657     mingw*|cygwin*|win*)
5658         ;;
5659     *)
5660         add_cflags -fPIC
5661         add_asflags -fPIC
5662         ;;
5663     esac
5664 }
5665
5666 enabled pic && enable_weak_pic
5667
5668 test_cc <<EOF || die "Symbol mangling check failed."
5669 int ff_extern;
5670 EOF
5671 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5672 extern_prefix=${sym%%ff_extern*}
5673
5674 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
5675
5676 for restrict_keyword in restrict __restrict__ __restrict ""; do
5677     test_code cc "" "char * $restrict_keyword p" && break
5678 done
5679
5680 check_cc pragma_deprecated "" '_Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"")'
5681
5682 # The global variable ensures the bits appear unchanged in the object file.
5683 test_cc <<EOF || die "endian test failed"
5684 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5685 EOF
5686 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5687
5688 check_cc const_nan math.h "struct { double d; } static const bar[] = { { NAN } }"
5689
5690 if ! enabled ppc64 || enabled bigendian; then
5691     disable vsx
5692 fi
5693
5694 check_gas() {
5695     log "check_gas using '$as' as AS"
5696     # :vararg is used on aarch64, arm and ppc altivec
5697     check_as vararg "
5698 .macro m n, y:vararg=0
5699 \n: .int \y
5700 .endm
5701 m x" || return 1
5702     # .altmacro is only used in arm asm
5703     ! enabled arm || check_as gnu_as ".altmacro"
5704 }
5705
5706 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5707     nogas=:
5708     enabled_any arm aarch64 && nogas=die
5709     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5710     as_noop=-v
5711
5712     case $as_type in
5713         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5714         gcc)  gaspp_as_type=gas ;;
5715         *)    gaspp_as_type=$as_type ;;
5716     esac
5717
5718     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5719
5720     test "${as#*gas-preprocessor.pl}" != "$as" ||
5721     test_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5722         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5723
5724     if ! check_gas ; then
5725         as=${gas:=$as}
5726         check_gas || \
5727             $nogas "GNU assembler not found, install/update gas-preprocessor"
5728     fi
5729
5730     check_as as_func ".func test
5731                       .endfunc"
5732 fi
5733
5734 check_inline_asm inline_asm_labels '"1:\n"'
5735
5736 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5737
5738 if enabled aarch64; then
5739     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5740     # internal assembler in clang 3.3 does not support this instruction
5741     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5742     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5743
5744     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5745
5746 elif enabled alpha; then
5747
5748     check_cflags -mieee
5749
5750 elif enabled arm; then
5751
5752     enabled msvc && check_cpp_condition thumb stddef.h "defined _M_ARMT"
5753     test_cpp_condition stddef.h "defined __thumb__" && test_cc <<EOF && enable_weak thumb
5754 float func(float a, float b){ return a+b; }
5755 EOF
5756     enabled thumb && check_cflags -mthumb || check_cflags -marm
5757
5758     if check_cpp_condition vfp_args stddef.h "defined __ARM_PCS_VFP"; then
5759         :
5760     elif check_cpp_condition vfp_args stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5761         :
5762     elif ! test_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5763         case "${cross_prefix:-$cc}" in
5764             *hardfloat*) enable vfp_args; fpabi=vfp ;;
5765             *) check_ld "cc" vfp_args <<EOF && fpabi=vfp || fpabi=soft ;;
5766 __asm__ (".eabi_attribute 28, 1");
5767 int main(void) { return 0; }
5768 EOF
5769         esac
5770         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5771     fi
5772
5773     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5774     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5775     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5776     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5777     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5778     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5779     enabled setend  && check_insn setend  'setend be'
5780
5781     [ $target_os = linux ] || [ $target_os = android ] ||
5782         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5783             $ARCH_EXT_LIST_ARM
5784
5785     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5786
5787     check_as as_arch_directive ".arch armv7-a"
5788     check_as as_dn_directive   "ra .dn d0.i16"
5789     check_as as_fpu_directive  ".fpu neon"
5790
5791     # llvm's integrated assembler supports .object_arch from llvm 3.5
5792     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
5793         check_as as_object_arch ".object_arch armv4"
5794
5795     # MS armasm fails to assemble our PIC constructs
5796     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5797
5798 elif enabled mips; then
5799
5800     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5801     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5802     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5803
5804     # Enable minimum ISA based on selected options
5805     if enabled mips64; then
5806         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5807         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5808         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5809     else
5810         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5811         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5812         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5813         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5814     fi
5815
5816     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5817     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5818     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_headers msa.h || disable msa
5819     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5820     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5821     enabled msa && enabled msa2 && check_inline_asm_flags msa2 '"nxbits.any.b $w0, $w0"' '-mmsa2' && check_headers msa2.h || disable msa2
5822
5823     if enabled bigendian && enabled msa; then
5824         disable msa
5825     fi
5826
5827 elif enabled parisc; then
5828
5829     if enabled gcc; then
5830         case $($cc -dumpversion) in
5831             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5832         esac
5833     fi
5834
5835 elif enabled ppc; then
5836
5837     enable local_aligned
5838
5839     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5840     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5841     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5842     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5843
5844     if enabled altivec; then
5845         check_cflags -maltivec -mabi=altivec
5846
5847         # check if our compiler supports Motorola AltiVec C API
5848         check_cc altivec altivec.h "vector signed int v1 = (vector signed int) { 0 };
5849                                     vector signed int v2 = (vector signed int) { 1 };
5850                                     v1 = vec_add(v1, v2);"
5851
5852         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5853     fi
5854
5855     if enabled vsx; then
5856         check_cflags -mvsx &&
5857         check_cc vsx altivec.h "int v[4] = { 0 };
5858                                 vector signed int v1 = vec_vsx_ld(0, v);"
5859     fi
5860
5861     if enabled power8; then
5862         check_cpp_condition power8 "altivec.h" "defined(_ARCH_PWR8)"
5863     fi
5864
5865 elif enabled x86; then
5866
5867     check_builtin rdtsc    intrin.h   "__rdtsc()"
5868     check_builtin mm_empty mmintrin.h "_mm_empty()"
5869
5870     enable local_aligned
5871
5872     # check whether EBP is available on x86
5873     # As 'i' is stored on the stack, this program will crash
5874     # if the base pointer is used to access it because the
5875     # base pointer is cleared in the inline assembly code.
5876     check_exec_crash <<EOF && enable ebp_available
5877 volatile int i=0;
5878 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5879 return i;
5880 EOF
5881
5882     # check whether EBX is available on x86
5883     check_inline_asm ebx_available '""::"b"(0)' &&
5884         check_inline_asm ebx_available '"":::"%ebx"'
5885
5886     # check whether xmm clobbers are supported
5887     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5888
5889     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5890         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5891
5892     # check whether binutils is new enough to compile SSSE3/MMXEXT
5893     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5894     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5895
5896     probe_x86asm(){
5897         x86asmexe_probe=$1
5898         if test_cmd $x86asmexe_probe -v; then
5899             x86asmexe=$x86asmexe_probe
5900             x86asm_type=nasm
5901             x86asm_debug="-g -F dwarf"
5902             X86ASMDEP=
5903             X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
5904         elif test_cmd $x86asmexe_probe --version; then
5905             x86asmexe=$x86asmexe_probe
5906             x86asm_type=yasm
5907             x86asm_debug="-g dwarf2"
5908             X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
5909             X86ASM_DEPFLAGS=
5910         fi
5911         check_x86asm x86asm "movbe ecx, [5]"
5912     }
5913
5914     if ! disabled_any asm mmx x86asm; then
5915         disable x86asm
5916         for program in $x86asmexe nasm yasm; do
5917             probe_x86asm $program && break
5918         done
5919         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
5920         X86ASMFLAGS="-f $objformat"
5921         enabled pic               && append X86ASMFLAGS "-DPIC"
5922         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
5923         case "$objformat" in
5924             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
5925         esac
5926
5927         check_x86asm avx512_external "vmovdqa32 [eax]{k1}{z}, zmm0"
5928         check_x86asm avx2_external   "vextracti128 xmm0, ymm0, 0"
5929         check_x86asm xop_external    "vpmacsdd xmm0, xmm1, xmm2, xmm3"
5930         check_x86asm fma4_external   "vfmaddps ymm0, ymm1, ymm2, ymm3"
5931         check_x86asm cpunop          "CPU amdnop"
5932     fi
5933
5934     case "$cpu" in
5935         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5936             disable fast_clz
5937         ;;
5938     esac
5939
5940 fi
5941
5942 check_cc intrinsics_neon arm_neon.h "int16x8_t test = vdupq_n_s16(0)"
5943
5944 check_ldflags -Wl,--as-needed
5945 check_ldflags -Wl,-z,noexecstack
5946
5947 if ! disabled network; then
5948     check_func getaddrinfo $network_extralibs
5949     check_func inet_aton $network_extralibs
5950
5951     check_type netdb.h "struct addrinfo"
5952     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5953     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5954     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5955     check_type poll.h "struct pollfd"
5956     check_type netinet/sctp.h "struct sctp_event_subscribe"
5957     check_struct "sys/socket.h" "struct msghdr" msg_flags
5958     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5959     check_type netinet/in.h "struct sockaddr_in6"
5960     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5961     check_type "sys/types.h sys/socket.h" socklen_t
5962
5963     # Prefer arpa/inet.h over winsock2
5964     if check_headers arpa/inet.h ; then
5965         check_func closesocket
5966     elif check_headers winsock2.h ; then
5967         check_func_headers winsock2.h closesocket -lws2 &&
5968             network_extralibs="-lws2" ||
5969         { check_func_headers winsock2.h closesocket -lws2_32 &&
5970             network_extralibs="-lws2_32"; } || disable winsock2_h network
5971         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5972
5973         check_type ws2tcpip.h socklen_t
5974         check_type ws2tcpip.h "struct addrinfo"
5975         check_type ws2tcpip.h "struct group_source_req"
5976         check_type ws2tcpip.h "struct ip_mreq_source"
5977         check_type ws2tcpip.h "struct ipv6_mreq"
5978         check_type winsock2.h "struct pollfd"
5979         check_struct winsock2.h "struct sockaddr" sa_len
5980         check_type ws2tcpip.h "struct sockaddr_in6"
5981         check_type ws2tcpip.h "struct sockaddr_storage"
5982     else
5983         disable network
5984     fi
5985 fi
5986
5987 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5988 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5989 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5990 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5991 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5992 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5993 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5994
5995 case "$custom_allocator" in
5996     jemalloc)
5997         # jemalloc by default does not use a prefix
5998         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5999     ;;
6000     tcmalloc)
6001         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
6002         malloc_prefix=tc_
6003     ;;
6004 esac
6005
6006 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
6007 check_func  ${malloc_prefix}memalign            && enable memalign
6008 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
6009
6010 check_func  access
6011 check_func_headers stdlib.h arc4random
6012 check_lib   clock_gettime time.h clock_gettime || check_lib clock_gettime time.h clock_gettime -lrt
6013 check_func  fcntl
6014 check_func  fork
6015 check_func  gethrtime
6016 check_func  getopt
6017 check_func  getrusage
6018 check_func  gettimeofday
6019 check_func  isatty
6020 check_func  mkstemp
6021 check_func  mmap
6022 check_func  mprotect
6023 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
6024 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
6025 check_func  sched_getaffinity
6026 check_func  setrlimit
6027 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
6028 check_func  strerror_r
6029 check_func  sysconf
6030 check_func  sysctl
6031 check_func  usleep
6032
6033 check_func_headers conio.h kbhit
6034 check_func_headers io.h setmode
6035 check_func_headers lzo/lzo1x.h lzo1x_999_compress
6036 check_func_headers mach/mach_time.h mach_absolute_time
6037 check_func_headers stdlib.h getenv
6038 check_func_headers sys/stat.h lstat
6039
6040 check_func_headers windows.h GetModuleHandle
6041 check_func_headers windows.h GetProcessAffinityMask
6042 check_func_headers windows.h GetProcessTimes
6043 check_func_headers windows.h GetSystemTimeAsFileTime
6044 check_func_headers windows.h LoadLibrary
6045 check_func_headers windows.h MapViewOfFile
6046 check_func_headers windows.h PeekNamedPipe
6047 check_func_headers windows.h SetConsoleTextAttribute
6048 check_func_headers windows.h SetConsoleCtrlHandler
6049 check_func_headers windows.h SetDllDirectory
6050 check_func_headers windows.h Sleep
6051 check_func_headers windows.h VirtualAlloc
6052 check_func_headers glob.h glob
6053 enabled xlib &&
6054     check_lib xlib "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
6055
6056 check_headers direct.h
6057 check_headers dirent.h
6058 check_headers dxgidebug.h
6059 check_headers dxva.h
6060 check_headers dxva2api.h -D_WIN32_WINNT=0x0600
6061 check_headers io.h
6062 check_headers linux/perf_event.h
6063 check_headers libcrystalhd/libcrystalhd_if.h
6064 check_headers malloc.h
6065 check_headers net/udplite.h
6066 check_headers poll.h
6067 check_headers sys/param.h
6068 check_headers sys/resource.h
6069 check_headers sys/select.h
6070 check_headers sys/time.h
6071 check_headers sys/un.h
6072 check_headers termios.h
6073 check_headers unistd.h
6074 check_headers valgrind/valgrind.h
6075 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
6076 check_headers windows.h
6077 check_headers X11/extensions/XvMClib.h
6078 check_headers asm/types.h
6079
6080 # it seems there are versions of clang in some distros that try to use the
6081 # gcc headers, which explodes for stdatomic
6082 # so we also check that atomics actually work here
6083 check_builtin stdatomic stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0); foo += bar"
6084
6085 check_lib advapi32 "windows.h"            RegCloseKey          -ladvapi32
6086 check_lib bcrypt   "windows.h bcrypt.h"   BCryptGenRandom      -lbcrypt &&
6087     check_cpp_condition bcrypt bcrypt.h "defined BCRYPT_RNG_ALGORITHM"
6088 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
6089 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
6090 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
6091
6092 check_lib android android/native_window.h ANativeWindow_acquire -landroid
6093 check_lib mediandk "stdint.h media/NdkImage.h" AImage_delete -lmediandk
6094 check_lib camera2ndk "stdbool.h stdint.h camera/NdkCameraManager.h" ACameraManager_create -lcamera2ndk
6095
6096 enabled appkit       && check_apple_framework AppKit
6097 enabled audiotoolbox && check_apple_framework AudioToolbox
6098 enabled avfoundation && check_apple_framework AVFoundation
6099 enabled coreimage    && check_apple_framework CoreImage
6100 enabled videotoolbox && check_apple_framework VideoToolbox
6101
6102 check_apple_framework CoreFoundation
6103 check_apple_framework CoreMedia
6104 check_apple_framework CoreVideo
6105
6106 enabled avfoundation && {
6107     disable coregraphics applicationservices
6108     check_lib coregraphics        CoreGraphics/CoreGraphics.h               CGGetActiveDisplayList "-framework CoreGraphics" ||
6109     check_lib applicationservices ApplicationServices/ApplicationServices.h CGGetActiveDisplayList "-framework ApplicationServices"; }
6110
6111 enabled videotoolbox && {
6112     check_lib coreservices CoreServices/CoreServices.h UTGetOSTypeFromString "-framework CoreServices"
6113     check_func_headers CoreMedia/CMFormatDescription.h kCMVideoCodecType_HEVC "-framework CoreMedia"
6114     check_func_headers CoreVideo/CVPixelBuffer.h kCVPixelFormatType_420YpCbCr10BiPlanarVideoRange "-framework CoreVideo"
6115     check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferTransferFunction_SMPTE_ST_2084_PQ "-framework CoreVideo"
6116     check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferTransferFunction_ITU_R_2100_HLG "-framework CoreVideo"
6117     check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferTransferFunction_Linear "-framework CoreVideo"
6118 }
6119
6120 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
6121
6122 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
6123 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
6124 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
6125 check_type "windows.h d3d11.h" "ID3D11VideoContext"
6126 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
6127
6128 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
6129 check_type "vdpau/vdpau.h" "VdpPictureInfoVP9"
6130
6131 if [ -z "$nvccflags" ]; then
6132     nvccflags=$nvccflags_default
6133 fi
6134
6135 if enabled x86_64 || enabled ppc64 || enabled aarch64; then
6136     nvccflags="$nvccflags -m64"
6137 else
6138     nvccflags="$nvccflags -m32"
6139 fi
6140
6141 if enabled cuda_nvcc; then
6142     nvccflags="$nvccflags -ptx"
6143 else
6144     nvccflags="$nvccflags -S -nocudalib -nocudainc --cuda-device-only -include ${source_link}/compat/cuda/cuda_runtime.h"
6145     check_nvcc cuda_llvm
6146 fi
6147
6148 if ! disabled ffnvcodec; then
6149     ffnv_hdr_list="ffnvcodec/nvEncodeAPI.h ffnvcodec/dynlink_cuda.h ffnvcodec/dynlink_cuviddec.h ffnvcodec/dynlink_nvcuvid.h"
6150     check_pkg_config ffnvcodec "ffnvcodec >= 9.1.23.1" "$ffnv_hdr_list" "" || \
6151       check_pkg_config ffnvcodec "ffnvcodec >= 9.0.18.3 ffnvcodec < 9.1" "$ffnv_hdr_list" "" || \
6152       check_pkg_config ffnvcodec "ffnvcodec >= 8.2.15.10 ffnvcodec < 8.3" "$ffnv_hdr_list" "" || \
6153       check_pkg_config ffnvcodec "ffnvcodec >= 8.1.24.11 ffnvcodec < 8.2" "$ffnv_hdr_list" ""
6154 fi
6155
6156 check_cpp_condition winrt windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)"
6157
6158 if ! disabled w32threads && ! enabled pthreads; then
6159     check_func_headers "windows.h process.h" _beginthreadex &&
6160         check_type "windows.h" CONDITION_VARIABLE &&
6161         check_type "windows.h" INIT_ONCE &&
6162         enable w32threads || disable w32threads
6163     if ! enabled w32threads && enabled winrt; then
6164         check_func_headers "windows.h" CreateThread &&
6165             enable w32threads || disable w32threads
6166     fi
6167 fi
6168
6169 # check for some common methods of building with pthread support
6170 # do this before the optional library checks as some of them require pthreads
6171 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
6172     if check_lib pthreads pthread.h pthread_join   -pthread &&
6173        check_lib pthreads pthread.h pthread_create -pthread; then
6174         add_cflags -pthread
6175     elif check_lib pthreads pthread.h pthread_join   -pthreads &&
6176          check_lib pthreads pthread.h pthread_create -pthreads; then
6177         add_cflags -pthreads
6178     elif check_lib pthreads pthread.h pthread_join   -ldl -pthread &&
6179          check_lib pthreads pthread.h pthread_create -ldl -pthread; then
6180         add_cflags -ldl -pthread
6181     elif check_lib pthreads pthread.h pthread_join   -lpthreadGC2 &&
6182          check_lib pthreads pthread.h pthread_create -lpthreadGC2; then
6183         :
6184     elif check_lib pthreads pthread.h pthread_join   -lpthread &&
6185          check_lib pthreads pthread.h pthread_create -lpthread; then
6186         :
6187     elif check_func pthread_join && check_func pthread_create; then
6188         enable pthreads
6189     fi
6190     check_cc pthreads "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER"
6191
6192     if enabled pthreads; then
6193         check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
6194         check_func pthread_cancel $pthreads_extralibs
6195     fi
6196 fi
6197
6198 enabled  zlib && { check_pkg_config zlib zlib "zlib.h" zlibVersion ||
6199                    check_lib zlib   zlib.h      zlibVersion    -lz; }
6200 enabled bzlib && check_lib bzlib bzlib.h BZ2_bzlibVersion    -lbz2
6201 enabled  lzma && check_lib lzma   lzma.h lzma_version_number -llzma
6202
6203 # On some systems dynamic loading requires no extra linker flags
6204 check_lib libdl dlfcn.h "dlopen dlsym" || check_lib libdl dlfcn.h "dlopen dlsym" -ldl
6205
6206 check_lib libm math.h sin -lm
6207
6208 atan2f_args=2
6209 copysign_args=2
6210 hypot_args=2
6211 ldexpf_args=2
6212 powf_args=2
6213
6214 for func in $MATH_FUNCS; do
6215     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
6216 done
6217
6218 for func in $COMPLEX_FUNCS; do
6219     eval check_complexfunc $func \${${func}_args:-1}
6220 done
6221
6222 # these are off by default, so fail if requested and not available
6223 enabled cuda_nvcc         && { check_nvcc cuda_nvcc || die "ERROR: failed checking for nvcc."; }
6224 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
6225 enabled decklink          && { require_headers DeckLinkAPI.h &&
6226                                { test_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a090500" || die "ERROR: Decklink API version must be >= 10.9.5."; } }
6227 enabled frei0r            && require_headers "frei0r.h dlfcn.h"
6228 enabled gmp               && require gmp gmp.h mpz_export -lgmp
6229 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init
6230 enabled jni               && { [ $target_os = "android" ] && check_headers jni.h && enabled pthreads || die "ERROR: jni not found"; }
6231 enabled ladspa            && require_headers "ladspa.h dlfcn.h"
6232 enabled libaom            && require_pkg_config libaom "aom >= 1.0.0" aom/aom_codec.h aom_codec_version
6233 enabled libaribb24        && { check_pkg_config libaribb24 "aribb24 > 1.0.3" "aribb24/aribb24.h" arib_instance_new ||
6234                                { enabled gpl && require_pkg_config libaribb24 aribb24 "aribb24/aribb24.h" arib_instance_new; } ||
6235                                die "ERROR: libaribb24 requires version higher than 1.0.3 or --enable-gpl."; }
6236 enabled lv2               && require_pkg_config lv2 lilv-0 "lilv/lilv.h" lilv_world_new
6237 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
6238 enabled libass            && require_pkg_config libass libass ass/ass.h ass_library_init
6239 enabled libbluray         && require_pkg_config libbluray libbluray libbluray/bluray.h bd_open
6240 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
6241 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
6242                              { check_lib libcelt celt/celt.h celt_decoder_create_custom -lcelt0 ||
6243                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
6244 enabled libcaca           && require_pkg_config libcaca caca caca.h caca_create_canvas
6245 enabled libcodec2         && require libcodec2 codec2/codec2.h codec2_create -lcodec2
6246 enabled libdav1d          && require_pkg_config libdav1d "dav1d >= 0.4.0" "dav1d/dav1d.h" dav1d_version
6247 enabled libdavs2          && require_pkg_config libdavs2 "davs2 >= 1.6.0" davs2.h davs2_decoder_open
6248 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
6249 enabled libdrm            && require_pkg_config libdrm libdrm xf86drm.h drmGetVersion
6250 enabled libfdk_aac        && { check_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
6251                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
6252                                  warn "using libfdk without pkg-config"; } }
6253 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"
6254 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_extralibs
6255 enabled fontconfig        && enable libfontconfig
6256 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
6257 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
6258 enabled libfribidi        && require_pkg_config libfribidi fribidi fribidi.h fribidi_version_info
6259 enabled libgme            && { check_pkg_config libgme libgme gme/gme.h gme_new_emu ||
6260                                require libgme gme/gme.h gme_new_emu -lgme -lstdc++; }
6261 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
6262                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
6263                                done || die "ERROR: libgsm not found"; }
6264 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc $pthreads_extralibs
6265 enabled libklvanc         && require libklvanc libklvanc/vanc.h klvanc_context_create -lklvanc
6266 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
6267 enabled liblensfun        && require_pkg_config liblensfun lensfun lensfun.h lf_db_new
6268 # While it may appear that require is being used as a pkg-config
6269 # fallback for libmfx, it is actually being used to detect a different
6270 # installation route altogether.  If libmfx is installed via the Intel
6271 # Media SDK or Intel Media Server Studio, these don't come with
6272 # pkg-config support.  Instead, users should make sure that the build
6273 # can find the libraries and headers through other means.
6274 enabled libmfx            && { check_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit ||
6275                                { require libmfx "mfx/mfxvideo.h" MFXInit "-llibmfx $advapi32_extralibs" && warn "using libmfx without pkg-config"; } }
6276 if enabled libmfx; then
6277    check_cc MFX_CODEC_VP9 "mfx/mfxvp9.h mfx/mfxstructures.h" "MFX_CODEC_VP9"
6278 fi
6279
6280 enabled libmodplug        && require_pkg_config libmodplug libmodplug libmodplug/modplug.h ModPlug_Load
6281 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame $libm_extralibs
6282 enabled libmysofa         && { check_pkg_config libmysofa libmysofa mysofa.h mysofa_neighborhood_init_withstepdefine ||
6283                                require libmysofa mysofa.h mysofa_neighborhood_init_withstepdefine -lmysofa $zlib_extralibs; }
6284 enabled libnpp            && { check_lib libnpp npp.h nppGetLibVersion -lnppig -lnppicc -lnppc -lnppidei ||
6285                                check_lib libnpp npp.h nppGetLibVersion -lnppi -lnppc -lnppidei ||
6286                                die "ERROR: libnpp not found"; }
6287 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
6288 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
6289 enabled libopencv         && { check_headers opencv2/core/core_c.h &&
6290                                { check_pkg_config libopencv opencv opencv2/core/core_c.h cvCreateImageHeader ||
6291                                  require libopencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
6292                                require_pkg_config libopencv opencv opencv/cxcore.h cvCreateImageHeader; }
6293 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
6294 enabled libopenjpeg       && { check_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version ||
6295                                { require_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } }
6296 enabled libopenmpt        && require_pkg_config libopenmpt "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create -lstdc++ && append libopenmpt_extralibs "-lstdc++"
6297 enabled libopus           && {
6298     enabled libopus_decoder && {
6299         require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
6300     }
6301     enabled libopus_encoder && {
6302         require_pkg_config libopus opus opus_multistream.h opus_multistream_surround_encoder_create
6303     }
6304 }
6305 enabled libpulse          && require_pkg_config libpulse libpulse pulse/pulseaudio.h pa_context_new
6306 enabled librav1e          && require_pkg_config librav1e "rav1e >= 0.1.0" rav1e.h rav1e_context_new
6307 enabled librsvg           && require_pkg_config librsvg librsvg-2.0 librsvg-2.0/librsvg/rsvg.h rsvg_handle_render_cairo
6308 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
6309 enabled librubberband     && require_pkg_config librubberband "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new -lstdc++ && append librubberband_extralibs "-lstdc++"
6310 enabled libshine          && require_pkg_config libshine shine shine/layer3.h shine_encode_buffer
6311 enabled libsmbclient      && { check_pkg_config libsmbclient smbclient libsmbclient.h smbc_init ||
6312                                require libsmbclient libsmbclient.h smbc_init -lsmbclient; }
6313 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy -lstdc++
6314 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
6315 enabled libssh            && require_pkg_config libssh libssh libssh/sftp.h sftp_init
6316 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init
6317 enabled libsrt            && require_pkg_config libsrt "srt >= 1.3.0" srt/srt.h srt_socket
6318 enabled libtensorflow     && require libtensorflow tensorflow/c/c_api.h TF_Version -ltensorflow
6319 enabled libtesseract      && require_pkg_config libtesseract tesseract tesseract/capi.h TessBaseAPICreate
6320 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
6321 enabled libtls            && require_pkg_config libtls libtls tls.h tls_configure
6322 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
6323                              { check_lib libtwolame twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
6324                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
6325 enabled libv4l2           && require_pkg_config libv4l2 libv4l2 libv4l2.h v4l2_ioctl
6326 enabled libvidstab        && require_pkg_config libvidstab "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
6327 enabled libvmaf           && require_pkg_config libvmaf "libvmaf >= 1.3.9" libvmaf.h compute_vmaf
6328 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
6329 enabled libvorbis         && require_pkg_config libvorbis vorbis vorbis/codec.h vorbis_info_init &&
6330                              require_pkg_config libvorbisenc vorbisenc vorbis/vorbisenc.h vorbis_encode_init
6331
6332 enabled libvpx            && {
6333     enabled libvpx_vp8_decoder && {
6334         check_pkg_config libvpx_vp8_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
6335             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"
6336     }
6337     enabled libvpx_vp8_encoder && {
6338         check_pkg_config libvpx_vp8_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
6339             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"
6340     }
6341     enabled libvpx_vp9_decoder && {
6342         check_pkg_config libvpx_vp9_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
6343             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"
6344     }
6345     enabled libvpx_vp9_encoder && {
6346         check_pkg_config libvpx_vp9_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
6347             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"
6348     }
6349     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
6350         die "libvpx enabled but no supported decoders found"
6351     fi
6352 }
6353
6354 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
6355 enabled libwebp           && {
6356     enabled libwebp_encoder      && require_pkg_config libwebp "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
6357     enabled libwebp_anim_encoder && check_pkg_config libwebp_anim_encoder "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit; }
6358 enabled libx264           && { check_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode ||
6359                                { require libx264 "stdint.h x264.h" x264_encoder_encode "-lx264 $pthreads_extralibs $libm_extralibs" &&
6360                                  warn "using libx264 without pkg-config"; } } &&
6361                              require_cpp_condition libx264 x264.h "X264_BUILD >= 118" &&
6362                              check_cpp_condition libx262 x264.h "X264_MPEG2"
6363 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
6364                              require_cpp_condition libx265 x265.h "X265_BUILD >= 68"
6365 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode "-lxavs $pthreads_extralibs $libm_extralibs"
6366 enabled libxavs2          && require_pkg_config libxavs2 "xavs2 >= 1.3.0" "stdint.h xavs2.h" xavs2_api_get
6367 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
6368 enabled libzimg           && require_pkg_config libzimg "zimg >= 2.7.0" zimg.h zimg_get_api_version
6369 enabled libzmq            && require_pkg_config libzmq "libzmq >= 4.2.1" zmq.h zmq_ctx_new
6370 enabled libzvbi           && require_pkg_config libzvbi zvbi-0.2 libzvbi.h vbi_decoder_new &&
6371                              { test_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
6372                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
6373 enabled libxml2           && require_pkg_config libxml2 libxml-2.0 libxml2/libxml/xmlversion.h xmlCheckVersion
6374 enabled mbedtls           && { check_pkg_config mbedtls mbedtls mbedtls/x509_crt.h mbedtls_x509_crt_init ||
6375                                check_pkg_config mbedtls mbedtls mbedtls/ssl.h mbedtls_ssl_init ||
6376                                check_lib mbedtls mbedtls/ssl.h mbedtls_ssl_init -lmbedtls -lmbedx509 -lmbedcrypto ||
6377                                die "ERROR: mbedTLS not found"; }
6378 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
6379 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
6380                                { ! enabled cross_compile &&
6381                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
6382                                  add_ldflags -L/opt/vc/lib/ &&
6383                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
6384                                die "ERROR: mmal not found" &&
6385                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
6386 enabled openal            && { { for al_extralibs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
6387                                check_lib openal 'AL/al.h' alGetError "${al_extralibs}" && break; done } ||
6388                                die "ERROR: openal not found"; } &&
6389                              { test_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
6390                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
6391 enabled opencl            && { check_pkg_config opencl OpenCL CL/cl.h clEnqueueNDRangeKernel ||
6392                                check_lib opencl OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
6393                                check_lib opencl CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
6394                                die "ERROR: opencl not found"; } &&
6395                              { test_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
6396                                test_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
6397                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
6398 enabled opengl            && { check_lib opengl GL/glx.h glXGetProcAddress "-lGL" ||
6399                                check_lib opengl windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
6400                                check_lib opengl OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
6401                                check_lib opengl ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
6402                                die "ERROR: opengl not found."
6403                              }
6404 enabled omx_rpi           && { test_code cc OMX_Core.h OMX_IndexConfigBrcmVideoRequestIFrame ||
6405                                { ! enabled cross_compile &&
6406                                  add_cflags -isystem/opt/vc/include/IL &&
6407                                  test_code cc OMX_Core.h OMX_IndexConfigBrcmVideoRequestIFrame; } ||
6408                                die "ERROR: OpenMAX IL headers from raspberrypi/firmware not found"; } &&
6409                              enable omx
6410 enabled omx               && require_headers OMX_Core.h
6411 enabled openssl           && { check_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
6412                                check_pkg_config openssl openssl openssl/ssl.h SSL_library_init ||
6413                                check_lib openssl openssl/ssl.h OPENSSL_init_ssl -lssl -lcrypto ||
6414                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
6415                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
6416                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
6417                                die "ERROR: openssl not found"; }
6418 enabled pocketsphinx      && require_pkg_config pocketsphinx pocketsphinx pocketsphinx/pocketsphinx.h ps_init
6419 enabled rkmpp             && { require_pkg_config rkmpp rockchip_mpp  rockchip/rk_mpi.h mpp_create &&
6420                                require_pkg_config rockchip_mpp "rockchip_mpp >= 1.3.7" rockchip/rk_mpi.h mpp_create &&
6421                                { enabled libdrm ||
6422                                  die "ERROR: rkmpp requires --enable-libdrm"; }
6423                              }
6424 enabled vapoursynth       && require_pkg_config vapoursynth "vapoursynth-script >= 42" VSScript.h vsscript_init
6425
6426
6427 if enabled gcrypt; then
6428     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
6429     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
6430         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
6431         gcrypt_extralibs=$("${GCRYPT_CONFIG}" --libs)
6432         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_extralibs ||
6433             die "ERROR: gcrypt not found"
6434         add_cflags $gcrypt_cflags
6435     else
6436         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
6437     fi
6438 fi
6439
6440 if enabled sdl2; then
6441     SDL2_CONFIG="${cross_prefix}sdl2-config"
6442     test_pkg_config sdl2 "sdl2 >= 2.0.1 sdl2 < 2.1.0" SDL_events.h SDL_PollEvent
6443     if disabled sdl2 && "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
6444         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
6445         sdl2_extralibs=$("${SDL2_CONFIG}" --libs)
6446         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
6447         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
6448         check_func_headers SDL_events.h SDL_PollEvent $sdl2_extralibs $sdl2_cflags &&
6449             enable sdl2
6450     fi
6451     if test $target_os = "mingw32"; then
6452         sdl2_extralibs=$(filter_out '-mwindows' $sdl2_extralibs)
6453     fi
6454 fi
6455
6456 if enabled decklink; then
6457     case $target_os in
6458         mingw32*|mingw64*|win32|win64)
6459             decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
6460             decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
6461             ;;
6462     esac
6463 fi
6464
6465 enabled securetransport &&
6466     check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
6467     check_lib securetransport "Security/SecureTransport.h Security/Security.h" "SSLCreateContext" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" ||
6468         disable securetransport
6469
6470 enabled securetransport &&
6471     check_func SecItemImport "-Wl,-framework,CoreFoundation -Wl,-framework,Security"
6472
6473 enabled schannel &&
6474     check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
6475     test_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" &&
6476     schannel_extralibs="-lsecur32" ||
6477         disable schannel
6478
6479 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
6480 enabled makeinfo \
6481     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
6482     && enable makeinfo_html || disable makeinfo_html
6483 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
6484 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
6485 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
6486 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
6487
6488 # check V4L2 codecs available in the API
6489 if enabled v4l2_m2m; then
6490     check_headers linux/fb.h
6491     check_headers linux/videodev2.h
6492     test_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6493     check_cc v4l2_m2m linux/videodev2.h "int i = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_VIDEO_M2M | V4L2_BUF_FLAG_LAST;"
6494     check_cc vc1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VC1_ANNEX_G;"
6495     check_cc mpeg1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG1;"
6496     check_cc mpeg2_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG2;"
6497     check_cc mpeg4_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG4;"
6498     check_cc hevc_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_HEVC;"
6499     check_cc h263_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H263;"
6500     check_cc h264_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H264;"
6501     check_cc vp8_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP8;"
6502     check_cc vp9_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP9;"
6503 fi
6504
6505 check_headers sys/videoio.h
6506 test_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6507
6508 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
6509 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
6510 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
6511 # w32api 3.12 had it defined wrong
6512 check_cpp_condition vfwcap_defines vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER"
6513
6514 check_type "dshow.h" IBaseFilter
6515
6516 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
6517 check_headers "dev/bktr/ioctl_meteor.h dev/bktr/ioctl_bt848.h"                   ||
6518     check_headers "machine/ioctl_meteor.h machine/ioctl_bt848.h"                 ||
6519     check_headers "dev/video/meteor/ioctl_meteor.h dev/video/bktr/ioctl_bt848.h" ||
6520     check_headers "dev/ic/bt8xx.h"
6521
6522 if check_struct sys/soundcard.h audio_buf_info bytes; then
6523     enable_sanitized sys/soundcard.h
6524 else
6525     test_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_sanitized sys/soundcard.h
6526     #include <sys/soundcard.h>
6527     audio_buf_info abc;
6528 EOF
6529 fi
6530
6531 enabled alsa && { check_pkg_config alsa alsa "alsa/asoundlib.h" snd_pcm_htimestamp ||
6532                   check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound; }
6533
6534 enabled libjack &&
6535     require_pkg_config libjack jack jack/jack.h jack_port_get_latency_range
6536
6537 enabled sndio && check_lib sndio sndio.h sio_open -lsndio
6538
6539 if enabled libcdio; then
6540     check_pkg_config libcdio libcdio_paranoia "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open ||
6541     check_pkg_config libcdio libcdio_paranoia "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open ||
6542     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6543     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6544     die "ERROR: No usable libcdio/cdparanoia found"
6545 fi
6546
6547 enabled libxcb && check_pkg_config libxcb "xcb >= 1.4" xcb/xcb.h xcb_connect ||
6548     disable libxcb_shm libxcb_shape libxcb_xfixes
6549
6550 if enabled libxcb; then
6551     enabled libxcb_shm    && check_pkg_config libxcb_shm    xcb-shm    xcb/shm.h    xcb_shm_attach
6552     enabled libxcb_shape  && check_pkg_config libxcb_shape  xcb-shape  xcb/shape.h  xcb_shape_get_rectangles
6553     enabled libxcb_xfixes && check_pkg_config libxcb_xfixes xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image
6554 fi
6555
6556 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6557
6558 # d3d11va requires linking directly to dxgi and d3d11 if not building for
6559 # the desktop api partition
6560 test_cpp <<EOF && enable uwp && d3d11va_extralibs="-ldxgi -ld3d11"
6561 #ifdef WINAPI_FAMILY
6562 #include <winapifamily.h>
6563 #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
6564 #error desktop, not uwp
6565 #else
6566 // WINAPI_FAMILY_APP, WINAPI_FAMILY_PHONE_APP => UWP
6567 #endif
6568 #else
6569 #error no family set
6570 #endif
6571 EOF
6572
6573 enabled vaapi &&
6574     check_pkg_config vaapi "libva >= 0.35.0" "va/va.h" vaInitialize
6575
6576 if enabled vaapi; then
6577     check_pkg_config vaapi_drm "libva-drm" "va/va_drm.h" vaGetDisplayDRM
6578
6579     if enabled xlib; then
6580         check_pkg_config vaapi_x11 "libva-x11" "va/va_x11.h" vaGetDisplay
6581     fi
6582
6583     check_cpp_condition vaapi_1 "va/va.h" "VA_CHECK_VERSION(1, 0, 0)"
6584
6585     check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
6586     check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
6587     check_struct "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer" output_hdr_metadata
6588     check_struct "va/va.h va/va_vpp.h" "VAProcPipelineCaps" rotation_flags
6589     check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
6590     check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
6591     check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
6592     check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
6593 fi
6594
6595 if enabled_all opencl libdrm ; then
6596     check_type "CL/cl_intel.h" "clCreateImageFromFdINTEL_fn" &&
6597         enable opencl_drm_beignet
6598     check_func_headers "CL/cl_ext.h" clImportMemoryARM &&
6599         enable opencl_drm_arm
6600 fi
6601
6602 if enabled_all opencl vaapi ; then
6603     if enabled opencl_drm_beignet ; then
6604         enable opencl_vaapi_beignet
6605     else
6606         check_type "CL/cl.h CL/cl_va_api_media_sharing_intel.h" "clCreateFromVA_APIMediaSurfaceINTEL_fn" &&
6607             enable opencl_vaapi_intel_media
6608     fi
6609 fi
6610
6611 if enabled_all opencl dxva2 ; then
6612     check_type "CL/cl_dx9_media_sharing.h" cl_dx9_surface_info_khr &&
6613         enable opencl_dxva2
6614 fi
6615
6616 if enabled_all opencl d3d11va ; then
6617     check_type "CL/cl_d3d11.h" clGetDeviceIDsFromD3D11KHR_fn &&
6618         enable opencl_d3d11
6619 fi
6620
6621 enabled vdpau &&
6622     check_cpp_condition vdpau vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP"
6623
6624 enabled vdpau &&
6625     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
6626
6627 enabled crystalhd && check_lib crystalhd "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd
6628
6629 if enabled x86; then
6630     case $target_os in
6631         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6632             ;;
6633         *)
6634             disable ffnvcodec cuvid nvdec nvenc
6635             ;;
6636     esac
6637 elif enabled ppc64 && ! enabled bigendian; then
6638     case $target_os in
6639         linux)
6640             ;;
6641         *)
6642             disable ffnvcodec cuvid nvdec nvenc
6643             ;;
6644     esac
6645 else
6646     disable ffnvcodec cuvid nvdec nvenc
6647 fi
6648
6649 enabled ffnvcodec && enable cuda
6650
6651 enabled nvenc &&
6652     test_cc -I$source_path <<EOF || disable nvenc
6653 #include <ffnvcodec/nvEncodeAPI.h>
6654 NV_ENCODE_API_FUNCTION_LIST flist;
6655 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6656 int main(void) { return 0; }
6657 EOF
6658
6659 enabled amf &&
6660     check_cpp_condition amf "AMF/core/Version.h" \
6661         "(AMF_VERSION_MAJOR << 48 | AMF_VERSION_MINOR << 32 | AMF_VERSION_RELEASE << 16 | AMF_VERSION_BUILD_NUM) >= 0x0001000400090000"
6662
6663 # Funny iconv installations are not unusual, so check it after all flags have been set
6664 if enabled libc_iconv; then
6665     check_func_headers iconv.h iconv
6666 elif enabled iconv; then
6667     check_func_headers iconv.h iconv || check_lib iconv iconv.h iconv -liconv
6668 fi
6669
6670 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6671
6672 # add some useful compiler flags if supported
6673 check_cflags -Wdeclaration-after-statement
6674 check_cflags -Wall
6675 check_cflags -Wdisabled-optimization
6676 check_cflags -Wpointer-arith
6677 check_cflags -Wredundant-decls
6678 check_cflags -Wwrite-strings
6679 check_cflags -Wtype-limits
6680 check_cflags -Wundef
6681 check_cflags -Wmissing-prototypes
6682 check_cflags -Wno-pointer-to-int-cast
6683 check_cflags -Wstrict-prototypes
6684 check_cflags -Wempty-body
6685
6686 if enabled extra_warnings; then
6687     check_cflags -Wcast-qual
6688     check_cflags -Wextra
6689     check_cflags -Wpedantic
6690 fi
6691
6692 check_disable_warning(){
6693     warning_flag=-W${1#-Wno-}
6694     test_cflags $unknown_warning_flags $warning_flag && add_cflags $1
6695 }
6696
6697 test_cflags -Werror=unused-command-line-argument &&
6698     append unknown_warning_flags "-Werror=unused-command-line-argument"
6699 test_cflags -Werror=unknown-warning-option &&
6700     append unknown_warning_flags "-Werror=unknown-warning-option"
6701
6702 check_disable_warning -Wno-parentheses
6703 check_disable_warning -Wno-switch
6704 check_disable_warning -Wno-format-zero-length
6705 check_disable_warning -Wno-pointer-sign
6706 check_disable_warning -Wno-unused-const-variable
6707 check_disable_warning -Wno-bool-operation
6708 check_disable_warning -Wno-char-subscripts
6709
6710 check_disable_warning_headers(){
6711     warning_flag=-W${1#-Wno-}
6712     test_cflags $warning_flag && add_cflags_headers $1
6713 }
6714
6715 check_disable_warning_headers -Wno-deprecated-declarations
6716 check_disable_warning_headers -Wno-unused-variable
6717
6718 test_cc <<EOF && enable blocks_extension
6719 void (^block)(void);
6720 EOF
6721
6722 # add some linker flags
6723 check_ldflags -Wl,--warn-common
6724 check_ldflags -Wl,-rpath-link=:libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6725 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir && add_ldsoflags -Wl,-rpath,$libdir
6726 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6727
6728 # add some strip flags
6729 check_stripflags -x
6730
6731 enabled neon_clobber_test &&
6732     check_ldflags -Wl,--wrap,avcodec_open2              \
6733                   -Wl,--wrap,avcodec_decode_audio4      \
6734                   -Wl,--wrap,avcodec_decode_video2      \
6735                   -Wl,--wrap,avcodec_decode_subtitle2   \
6736                   -Wl,--wrap,avcodec_encode_audio2      \
6737                   -Wl,--wrap,avcodec_encode_video2      \
6738                   -Wl,--wrap,avcodec_encode_subtitle    \
6739                   -Wl,--wrap,avcodec_send_packet        \
6740                   -Wl,--wrap,avcodec_receive_packet     \
6741                   -Wl,--wrap,avcodec_send_frame         \
6742                   -Wl,--wrap,avcodec_receive_frame      \
6743                   -Wl,--wrap,swr_convert                \
6744                   -Wl,--wrap,avresample_convert ||
6745     disable neon_clobber_test
6746
6747 enabled xmm_clobber_test &&
6748     check_ldflags -Wl,--wrap,avcodec_open2              \
6749                   -Wl,--wrap,avcodec_decode_audio4      \
6750                   -Wl,--wrap,avcodec_decode_video2      \
6751                   -Wl,--wrap,avcodec_decode_subtitle2   \
6752                   -Wl,--wrap,avcodec_encode_audio2      \
6753                   -Wl,--wrap,avcodec_encode_video2      \
6754                   -Wl,--wrap,avcodec_encode_subtitle    \
6755                   -Wl,--wrap,avcodec_send_packet        \
6756                   -Wl,--wrap,avcodec_receive_packet     \
6757                   -Wl,--wrap,avcodec_send_frame         \
6758                   -Wl,--wrap,avcodec_receive_frame      \
6759                   -Wl,--wrap,swr_convert                \
6760                   -Wl,--wrap,avresample_convert         \
6761                   -Wl,--wrap,sws_scale ||
6762     disable xmm_clobber_test
6763
6764 check_ld "cc" proper_dce <<EOF
6765 extern const int array[512];
6766 static inline int func(void) { return array[0]; }
6767 int main(void) { return 0; }
6768 EOF
6769
6770 if enabled proper_dce; then
6771     echo "X { local: *; };" > $TMPV
6772     if test_ldflags -Wl,${version_script},$TMPV; then
6773         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6774         quotes='""'
6775         test_cc <<EOF && enable symver_asm_label
6776 void ff_foo(void) __asm__ ("av_foo@VERSION");
6777 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6778 EOF
6779         test_cc <<EOF && enable symver_gnu_asm
6780 __asm__(".symver ff_foo,av_foo@VERSION");
6781 void ff_foo(void) {}
6782 EOF
6783     fi
6784 fi
6785
6786 if [ -z "$optflags" ]; then
6787     if enabled small; then
6788         optflags=$cflags_size
6789     elif enabled optimizations; then
6790         optflags=$cflags_speed
6791     else
6792         optflags=$cflags_noopt
6793     fi
6794 fi
6795
6796 check_optflags(){
6797     check_cflags "$@"
6798     enabled lto && check_ldflags "$@"
6799 }
6800
6801 check_optflags $optflags
6802 check_optflags -fno-math-errno
6803 check_optflags -fno-signed-zeros
6804
6805 if enabled lto; then
6806     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6807     check_cflags  -flto
6808     check_ldflags -flto $cpuflags
6809     disable inline_asm_direct_symbol_refs
6810 fi
6811
6812 enabled ftrapv && check_cflags -ftrapv
6813
6814 test_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6815 int x;
6816 EOF
6817
6818
6819 if enabled icc; then
6820     # Just warnings, no remarks
6821     check_cflags -w1
6822     # -wd: Disable following warnings
6823     # 144, 167, 556: -Wno-pointer-sign
6824     # 188: enumerated type mixed with another type
6825     # 1292: attribute "foo" ignored
6826     # 1419: external declaration in primary source file
6827     # 10006: ignoring unknown option -fno-signed-zeros
6828     # 10148: ignoring unknown option -Wno-parentheses
6829     # 10156: ignoring option '-W'; no argument required
6830     # 13200: No EMMS instruction before call to function
6831     # 13203: No EMMS instruction before return from function
6832     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6833     # 11030: Warning unknown option --as-needed
6834     # 10156: ignoring option '-export'; no argument required
6835     check_ldflags -wd10156,11030
6836     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6837     enable ebp_available
6838     # The test above does not test linking
6839     enabled lto && disable symver_asm_label
6840     if enabled x86_32; then
6841         icc_version=$($cc -dumpversion)
6842         test ${icc_version%%.*} -ge 11 &&
6843             check_cflags -falign-stack=maintain-16-byte ||
6844             disable aligned_stack
6845     fi
6846 elif enabled gcc; then
6847     check_optflags -fno-tree-vectorize
6848     check_cflags -Werror=format-security
6849     check_cflags -Werror=implicit-function-declaration
6850     check_cflags -Werror=missing-prototypes
6851     check_cflags -Werror=return-type
6852     check_cflags -Werror=vla
6853     check_cflags -Wformat
6854     check_cflags -fdiagnostics-color=auto
6855     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6856     if enabled x86_32; then
6857         case $target_os in
6858         *bsd*)
6859             # BSDs don't guarantee a 16 byte aligned stack, but we can
6860             # request GCC to try to maintain 16 byte alignment throughout
6861             # function calls. Library entry points that might call assembly
6862             # functions align the stack. (The parameter means 2^4 bytes.)
6863             check_cflags -mpreferred-stack-boundary=4
6864             ;;
6865         esac
6866     fi
6867 elif enabled llvm_gcc; then
6868     check_cflags -mllvm -stack-alignment=16
6869 elif enabled clang; then
6870     if enabled x86_32; then
6871         # Clang doesn't support maintaining alignment without assuming the
6872         # same alignment in every function. If 16 byte alignment would be
6873         # enabled, one would also have to either add attribute_align_arg on
6874         # every single entry point into the libraries or enable -mstackrealign
6875         # (doing stack realignment in every single function).
6876         case $target_os in
6877         mingw32|win32|*bsd*)
6878             disable aligned_stack
6879             ;;
6880         *)
6881             check_cflags -mllvm -stack-alignment=16
6882             check_cflags -mstack-alignment=16
6883             ;;
6884         esac
6885     else
6886         check_cflags -mllvm -stack-alignment=16
6887         check_cflags -mstack-alignment=16
6888     fi
6889     check_cflags -Qunused-arguments
6890     check_cflags -Werror=implicit-function-declaration
6891     check_cflags -Werror=missing-prototypes
6892     check_cflags -Werror=return-type
6893 elif enabled cparser; then
6894     add_cflags -Wno-missing-variable-declarations
6895     add_cflags -Wno-empty-statement
6896 elif enabled armcc; then
6897     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6898     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6899     # 2523: use of inline assembly is deprecated
6900     add_cflags -W${armcc_opt},--diag_suppress=2523
6901     add_cflags -W${armcc_opt},--diag_suppress=1207
6902     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6903     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6904     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6905     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6906 elif enabled pathscale; then
6907     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6908     disable inline_asm
6909 elif enabled_any msvc icl; then
6910     enabled x86_32 && disable aligned_stack
6911     enabled_all x86_32 debug && add_cflags -Oy-
6912     enabled debug && add_ldflags -debug
6913     enable pragma_deprecated
6914     if enabled icl; then
6915         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6916         # (correctly) on icl 13.x.
6917         test_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6918             add_cflags -Qansi-alias
6919         # Some inline asm is not compilable in debug
6920         if enabled debug; then
6921             disable ebp_available
6922             disable ebx_available
6923         fi
6924     fi
6925     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6926     check_cpp_condition log2 crtversion.h "_VC_CRT_MAJOR_VERSION >= 12"
6927     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6928     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6929     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6930     # MSVC 2013 and newer can handle it fine.
6931     # If this declspec fails, force including stdlib.h before the restrict redefinition
6932     # happens in config.h.
6933     if [ $restrict_keyword != restrict ]; then
6934         test_cc <<EOF || add_cflags -FIstdlib.h
6935 __declspec($restrict_keyword) void *foo(int);
6936 EOF
6937     fi
6938     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6939     # Issue has been fixed in MSVC v19.00.24218.
6940     test_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6941         check_cflags -d2SSAOptimizer-
6942     # enable utf-8 source processing on VS2015 U2 and newer
6943     test_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6944         add_cflags -utf-8
6945 fi
6946
6947 for pfx in "" host_; do
6948     varname=${pfx%_}cc_type
6949     eval "type=\$$varname"
6950     if [ "$type" = "msvc" ]; then
6951         test_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6952 static inline int foo(int a) { return a; }
6953 EOF
6954     fi
6955 done
6956
6957 case $as_type in
6958     clang)
6959         add_asflags -Qunused-arguments
6960     ;;
6961 esac
6962
6963 case $ld_type in
6964     clang)
6965         check_ldflags -Qunused-arguments
6966     ;;
6967 esac
6968
6969 enable frame_thread_encoder
6970
6971 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6972
6973 check_deps $CONFIG_LIST       \
6974            $CONFIG_EXTRA      \
6975            $HAVE_LIST         \
6976            $ALL_COMPONENTS    \
6977
6978 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"
6979 enabled avresample && warn "Building with deprecated library libavresample"
6980
6981 case $target_os in
6982 haiku)
6983     disable memalign
6984     disable posix_memalign
6985     ;;
6986 *-dos|freedos|opendos)
6987     if test_cpp_condition sys/version.h "defined(__DJGPP__) && __DJGPP__ == 2 && __DJGPP_MINOR__ == 5"; then
6988         disable memalign
6989     fi
6990     ;;
6991 esac
6992
6993 flatten_extralibs(){
6994     nested_entries=
6995     list_name=$1
6996     eval list=\$${1}
6997     for entry in $list; do
6998         entry_copy=$entry
6999         resolve entry_copy
7000         flat_entries=
7001         for e in $entry_copy; do
7002             case $e in
7003                 *_extralibs) nested_entries="$nested_entries$e ";;
7004                           *) flat_entries="$flat_entries$e ";;
7005             esac
7006         done
7007         eval $entry="\$flat_entries"
7008     done
7009     append $list_name "$nested_entries"
7010
7011     resolve nested_entries
7012     if test -n "$(filter '*_extralibs' $nested_entries)"; then
7013         flatten_extralibs $list_name
7014     fi
7015 }
7016
7017 flatten_extralibs_wrapper(){
7018     list_name=$1
7019     flatten_extralibs $list_name
7020     unique $list_name
7021     resolve $list_name
7022     eval $list_name=\$\(\$ldflags_filter \$$list_name\)
7023     eval printf \''%s'\' \""\$$list_name"\"
7024 }
7025
7026 for linkunit in $LIBRARY_LIST; do
7027     unset current_extralibs
7028     eval components=\$$(toupper ${linkunit})_COMPONENTS_LIST
7029     for comp in ${components}; do
7030         enabled $comp || continue
7031         comp_extralibs="${comp}_extralibs"
7032         append current_extralibs $comp_extralibs
7033     done
7034     eval prepend ${linkunit}_extralibs $current_extralibs
7035 done
7036
7037 for linkunit in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
7038     eval ${linkunit}_extralibs=\$\(flatten_extralibs_wrapper ${linkunit}_extralibs\)
7039 done
7040
7041 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
7042
7043 for thread in $THREADS_LIST; do
7044     if enabled $thread; then
7045         test -n "$thread_type" &&
7046             die "ERROR: Only one thread type must be selected." ||
7047             thread_type="$thread"
7048     fi
7049 done
7050
7051 if disabled stdatomic; then
7052     if enabled atomics_gcc; then
7053         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
7054     elif enabled atomics_win32; then
7055         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
7056     elif enabled atomics_suncc; then
7057         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
7058     elif enabled pthreads; then
7059         add_compat atomics/pthread/stdatomic.o
7060         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
7061     else
7062         enabled threads && die "Threading is enabled, but no atomics are available"
7063         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
7064     fi
7065 fi
7066
7067 # Check if requested libraries were found.
7068 for lib in $AUTODETECT_LIBS; do
7069     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
7070 done
7071
7072 enabled zlib && add_cppflags -DZLIB_CONST
7073
7074 # conditional library dependencies, in any order
7075 enabled afftdn_filter       && prepend avfilter_deps "avcodec"
7076 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
7077 enabled afir_filter         && prepend avfilter_deps "avcodec"
7078 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
7079 enabled aresample_filter    && prepend avfilter_deps "swresample"
7080 enabled atempo_filter       && prepend avfilter_deps "avcodec"
7081 enabled bm3d_filter         && prepend avfilter_deps "avcodec"
7082 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
7083 enabled convolve_filter     && prepend avfilter_deps "avcodec"
7084 enabled deconvolve_filter   && prepend avfilter_deps "avcodec"
7085 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
7086 enabled elbg_filter         && prepend avfilter_deps "avcodec"
7087 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
7088 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
7089 enabled firequalizer_filter && prepend avfilter_deps "avcodec"
7090 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
7091 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
7092 enabled pan_filter          && prepend avfilter_deps "swresample"
7093 enabled pp_filter           && prepend avfilter_deps "postproc"
7094 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
7095 enabled resample_filter && prepend avfilter_deps "avresample"
7096 enabled sab_filter          && prepend avfilter_deps "swscale"
7097 enabled scale_filter    && prepend avfilter_deps "swscale"
7098 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
7099 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
7100 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
7101 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
7102 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
7103 enabled signature_filter    && prepend avfilter_deps "avcodec avformat"
7104 enabled smartblur_filter    && prepend avfilter_deps "swscale"
7105 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
7106 enabled spp_filter          && prepend avfilter_deps "avcodec"
7107 enabled sr_filter           && prepend avfilter_deps "avformat swscale"
7108 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
7109 enabled uspp_filter         && prepend avfilter_deps "avcodec"
7110 enabled zoompan_filter      && prepend avfilter_deps "swscale"
7111
7112 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
7113
7114 #FIXME
7115 enabled_any sdl2_outdev opengl_outdev && enabled sdl2 &&
7116     add_cflags $(filter_out '-Dmain=SDL_main' $sdl2_cflags)
7117
7118 enabled opus_decoder    && prepend avcodec_deps "swresample"
7119
7120 # reorder the items at var $1 to align with the items order at var $2 .
7121 # die if an item at $1 is not at $2 .
7122 reorder_by(){
7123     eval rb_in=\$$1
7124     eval rb_ordered=\$$2
7125
7126     for rb in $rb_in; do
7127         is_in $rb $rb_ordered || die "$rb at \$$1 is not at \$$2"
7128     done
7129
7130     rb_out=
7131     for rb in $rb_ordered; do
7132         is_in $rb $rb_in && rb_out="$rb_out$rb "
7133     done
7134     eval $1=\$rb_out
7135 }
7136
7137 # deps-expand fflib $1:  N x {append all expanded deps; unique}
7138 # within a set of N items, N expansions are enough to expose a cycle.
7139 expand_deps(){
7140     unique ${1}_deps  # required for the early break test.
7141     for dummy in $LIBRARY_LIST; do  # N iteratios
7142         eval deps=\$${1}_deps
7143         append ${1}_deps $(map 'eval echo \$${v}_deps' $deps)
7144         unique ${1}_deps
7145         eval '[ ${#deps} = ${#'${1}_deps'} ]' && break  # doesn't expand anymore
7146     done
7147
7148     eval is_in $1 \$${1}_deps && die "Dependency cycle at ${1}_deps"
7149     reorder_by ${1}_deps LIBRARY_LIST  # linking order is expected later
7150 }
7151
7152 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
7153 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
7154
7155 map 'expand_deps $v' $LIBRARY_LIST
7156
7157 if test "$quiet" != "yes"; then
7158
7159 echo "install prefix            $prefix"
7160 echo "source path               $source_path"
7161 echo "C compiler                $cc"
7162 echo "C library                 $libc_type"
7163 if test "$host_cc" != "$cc"; then
7164     echo "host C compiler           $host_cc"
7165     echo "host C library            $host_libc_type"
7166 fi
7167 echo "ARCH                      $arch ($cpu)"
7168 if test "$build_suffix" != ""; then
7169     echo "build suffix              $build_suffix"
7170 fi
7171 if test "$progs_suffix" != ""; then
7172     echo "progs suffix              $progs_suffix"
7173 fi
7174 if test "$extra_version" != ""; then
7175     echo "version string suffix     $extra_version"
7176 fi
7177 echo "big-endian                ${bigendian-no}"
7178 echo "runtime cpu detection     ${runtime_cpudetect-no}"
7179 if enabled x86; then
7180     echo "standalone assembly       ${x86asm-no}"
7181     echo "x86 assembler             ${x86asmexe}"
7182     echo "MMX enabled               ${mmx-no}"
7183     echo "MMXEXT enabled            ${mmxext-no}"
7184     echo "3DNow! enabled            ${amd3dnow-no}"
7185     echo "3DNow! extended enabled   ${amd3dnowext-no}"
7186     echo "SSE enabled               ${sse-no}"
7187     echo "SSSE3 enabled             ${ssse3-no}"
7188     echo "AESNI enabled             ${aesni-no}"
7189     echo "AVX enabled               ${avx-no}"
7190     echo "AVX2 enabled              ${avx2-no}"
7191     echo "AVX-512 enabled           ${avx512-no}"
7192     echo "XOP enabled               ${xop-no}"
7193     echo "FMA3 enabled              ${fma3-no}"
7194     echo "FMA4 enabled              ${fma4-no}"
7195     echo "i686 features enabled     ${i686-no}"
7196     echo "CMOV is fast              ${fast_cmov-no}"
7197     echo "EBX available             ${ebx_available-no}"
7198     echo "EBP available             ${ebp_available-no}"
7199 fi
7200 if enabled aarch64; then
7201     echo "NEON enabled              ${neon-no}"
7202     echo "VFP enabled               ${vfp-no}"
7203 fi
7204 if enabled arm; then
7205     echo "ARMv5TE enabled           ${armv5te-no}"
7206     echo "ARMv6 enabled             ${armv6-no}"
7207     echo "ARMv6T2 enabled           ${armv6t2-no}"
7208     echo "VFP enabled               ${vfp-no}"
7209     echo "NEON enabled              ${neon-no}"
7210     echo "THUMB enabled             ${thumb-no}"
7211 fi
7212 if enabled mips; then
7213     echo "MIPS FPU enabled          ${mipsfpu-no}"
7214     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
7215     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
7216     echo "MIPS MSA enabled          ${msa-no}"
7217     echo "MIPS MSA2 enabled         ${msa2-no}"
7218     echo "LOONGSON MMI enabled      ${mmi-no}"
7219 fi
7220 if enabled ppc; then
7221     echo "AltiVec enabled           ${altivec-no}"
7222     echo "VSX enabled               ${vsx-no}"
7223     echo "POWER8 enabled            ${power8-no}"
7224     echo "PPC 4xx optimizations     ${ppc4xx-no}"
7225     echo "dcbzl available           ${dcbzl-no}"
7226 fi
7227 echo "debug symbols             ${debug-no}"
7228 echo "strip symbols             ${stripping-no}"
7229 echo "optimize for size         ${small-no}"
7230 echo "optimizations             ${optimizations-no}"
7231 echo "static                    ${static-no}"
7232 echo "shared                    ${shared-no}"
7233 echo "postprocessing support    ${postproc-no}"
7234 echo "network support           ${network-no}"
7235 echo "threading support         ${thread_type-no}"
7236 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
7237 echo "texi2html enabled         ${texi2html-no}"
7238 echo "perl enabled              ${perl-no}"
7239 echo "pod2man enabled           ${pod2man-no}"
7240 echo "makeinfo enabled          ${makeinfo-no}"
7241 echo "makeinfo supports HTML    ${makeinfo_html-no}"
7242 test -n "$random_seed" &&
7243     echo "random seed               ${random_seed}"
7244 echo
7245
7246 echo "External libraries:"
7247 print_enabled '' $EXTERNAL_LIBRARY_LIST $EXTERNAL_AUTODETECT_LIBRARY_LIST | print_in_columns
7248 echo
7249
7250 echo "External libraries providing hardware acceleration:"
7251 print_enabled '' $HWACCEL_LIBRARY_LIST $HWACCEL_AUTODETECT_LIBRARY_LIST | print_in_columns
7252 echo
7253
7254 echo "Libraries:"
7255 print_enabled '' $LIBRARY_LIST | print_in_columns
7256 echo
7257
7258 echo "Programs:"
7259 print_enabled '' $PROGRAM_LIST | print_in_columns
7260 echo
7261
7262 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
7263     echo "Enabled ${type}s:"
7264     eval list=\$$(toupper $type)_LIST
7265     print_enabled '_*' $list | print_in_columns
7266     echo
7267 done
7268
7269 if test -n "$ignore_tests"; then
7270     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
7271     echo "Ignored FATE tests:"
7272     echo $ignore_tests | print_in_columns
7273     echo
7274 fi
7275
7276 echo "License: $license"
7277
7278 fi # test "$quiet" != "yes"
7279
7280 if test -n "$WARN_IF_GETS_DISABLED_LIST"; then
7281     for cfg in $WARN_IF_GETS_DISABLED_LIST; do
7282         if disabled $cfg; then
7283             varname=${cfg}_disable_reason
7284             eval "warn \"Disabled $cfg because \$$varname\""
7285         fi
7286     done
7287 fi
7288
7289 if test -n "$WARNINGS"; then
7290     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
7291     enabled fatal_warnings && exit 1
7292 fi
7293
7294 test -e Makefile || echo "include $source_path/Makefile" > Makefile
7295
7296 esc(){
7297     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
7298 }
7299
7300 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" > ffbuild/config.fate
7301
7302 enabled stripping || strip="echo skipping strip"
7303 enabled stripping || striptype=""
7304
7305 config_files="$TMPH ffbuild/config.mak doc/config.texi"
7306
7307 cat > ffbuild/config.mak <<EOF
7308 # Automatically generated by configure - do not modify!
7309 ifndef FFMPEG_CONFIG_MAK
7310 FFMPEG_CONFIG_MAK=1
7311 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
7312 prefix=$prefix
7313 LIBDIR=\$(DESTDIR)$libdir
7314 SHLIBDIR=\$(DESTDIR)$shlibdir
7315 INCDIR=\$(DESTDIR)$incdir
7316 BINDIR=\$(DESTDIR)$bindir
7317 DATADIR=\$(DESTDIR)$datadir
7318 DOCDIR=\$(DESTDIR)$docdir
7319 MANDIR=\$(DESTDIR)$mandir
7320 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
7321 INSTALL_NAME_DIR=$install_name_dir
7322 SRC_PATH=$source_path
7323 SRC_LINK=$source_link
7324 ifndef MAIN_MAKEFILE
7325 SRC_PATH:=\$(SRC_PATH:.%=..%)
7326 endif
7327 CC_IDENT=$cc_ident
7328 ARCH=$arch
7329 INTRINSICS=$intrinsics
7330 EXTERN_PREFIX=$extern_prefix
7331 CC=$cc
7332 CXX=$cxx
7333 AS=$as
7334 OBJCC=$objcc
7335 LD=$ld
7336 DEPCC=$dep_cc
7337 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
7338 DEPAS=$as
7339 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
7340 X86ASM=$x86asmexe
7341 DEPX86ASM=$x86asmexe
7342 DEPX86ASMFLAGS=\$(X86ASMFLAGS)
7343 AR=$ar
7344 ARFLAGS=$arflags
7345 AR_O=$ar_o
7346 AR_CMD=$ar
7347 NM_CMD=$nm
7348 RANLIB=$ranlib
7349 STRIP=$strip
7350 STRIPTYPE=$striptype
7351 NVCC=$nvcc
7352 CP=cp -p
7353 LN_S=$ln_s
7354 CPPFLAGS=$CPPFLAGS
7355 CFLAGS=$CFLAGS
7356 CXXFLAGS=$CXXFLAGS
7357 OBJCFLAGS=$OBJCFLAGS
7358 ASFLAGS=$ASFLAGS
7359 NVCCFLAGS=$nvccflags
7360 AS_C=$AS_C
7361 AS_O=$AS_O
7362 OBJCC_C=$OBJCC_C
7363 OBJCC_E=$OBJCC_E
7364 OBJCC_O=$OBJCC_O
7365 CC_C=$CC_C
7366 CC_E=$CC_E
7367 CC_O=$CC_O
7368 CXX_C=$CXX_C
7369 CXX_O=$CXX_O
7370 NVCC_C=$NVCC_C
7371 NVCC_O=$NVCC_O
7372 LD_O=$LD_O
7373 X86ASM_O=$X86ASM_O
7374 LD_LIB=$LD_LIB
7375 LD_PATH=$LD_PATH
7376 DLLTOOL=$dlltool
7377 WINDRES=$windres
7378 DEPWINDRES=$dep_cc
7379 DOXYGEN=$doxygen
7380 LDFLAGS=$LDFLAGS
7381 LDEXEFLAGS=$LDEXEFLAGS
7382 LDSOFLAGS=$LDSOFLAGS
7383 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
7384 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
7385 X86ASMFLAGS=$X86ASMFLAGS
7386 BUILDSUF=$build_suffix
7387 PROGSSUF=$progs_suffix
7388 FULLNAME=$FULLNAME
7389 LIBPREF=$LIBPREF
7390 LIBSUF=$LIBSUF
7391 LIBNAME=$LIBNAME
7392 SLIBPREF=$SLIBPREF
7393 SLIBSUF=$SLIBSUF
7394 EXESUF=$EXESUF
7395 EXTRA_VERSION=$extra_version
7396 CCDEP=$CCDEP
7397 CXXDEP=$CXXDEP
7398 CCDEP_FLAGS=$CCDEP_FLAGS
7399 ASDEP=$ASDEP
7400 ASDEP_FLAGS=$ASDEP_FLAGS
7401 X86ASMDEP=$X86ASMDEP
7402 X86ASMDEP_FLAGS=$X86ASMDEP_FLAGS
7403 CC_DEPFLAGS=$CC_DEPFLAGS
7404 AS_DEPFLAGS=$AS_DEPFLAGS
7405 X86ASM_DEPFLAGS=$X86ASM_DEPFLAGS
7406 HOSTCC=$host_cc
7407 HOSTLD=$host_ld
7408 HOSTCFLAGS=$host_cflags
7409 HOSTCPPFLAGS=$host_cppflags
7410 HOSTEXESUF=$HOSTEXESUF
7411 HOSTLDFLAGS=$host_ldflags
7412 HOSTEXTRALIBS=$host_extralibs
7413 DEPHOSTCC=$host_cc
7414 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
7415 HOSTCCDEP=$HOSTCCDEP
7416 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
7417 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
7418 HOSTCC_C=$HOSTCC_C
7419 HOSTCC_O=$HOSTCC_O
7420 HOSTLD_O=$HOSTLD_O
7421 TARGET_EXEC=$target_exec $target_exec_args
7422 TARGET_PATH=$target_path
7423 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
7424 CFLAGS-ffplay=${sdl2_cflags}
7425 CFLAGS_HEADERS=$CFLAGS_HEADERS
7426 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
7427 EXTRALIBS=$extralibs
7428 COMPAT_OBJS=$compat_objs
7429 INSTALL=$install
7430 LIBTARGET=${LIBTARGET}
7431 SLIBNAME=${SLIBNAME}
7432 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
7433 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
7434 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
7435 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
7436 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
7437 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
7438 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
7439 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
7440 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
7441 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
7442 NOREDZONE_FLAGS=$noredzone_flags
7443 LIBFUZZER_PATH=$libfuzzer_path
7444 IGNORE_TESTS=$ignore_tests
7445 EOF
7446
7447 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> ffbuild/config.mak' $LIBRARY_LIST
7448
7449 for entry in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
7450     eval echo "EXTRALIBS-${entry}=\$${entry}_extralibs" >> ffbuild/config.mak
7451 done
7452
7453 cat > $TMPH <<EOF
7454 /* Automatically generated by configure - do not modify! */
7455 #ifndef FFMPEG_CONFIG_H
7456 #define FFMPEG_CONFIG_H
7457 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
7458 #define FFMPEG_LICENSE "$(c_escape $license)"
7459 #define CONFIG_THIS_YEAR 2020
7460 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
7461 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
7462 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
7463 #define av_restrict $restrict_keyword
7464 #define EXTERN_PREFIX "${extern_prefix}"
7465 #define EXTERN_ASM ${extern_prefix}
7466 #define BUILDSUF "$build_suffix"
7467 #define SLIBSUF "$SLIBSUF"
7468 #define HAVE_MMX2 HAVE_MMXEXT
7469 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
7470 EOF
7471
7472 test -n "$assert_level" &&
7473     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
7474
7475 test -n "$malloc_prefix" &&
7476     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
7477
7478 if enabled x86asm; then
7479     append config_files $TMPASM
7480     cat > $TMPASM <<EOF
7481 ; Automatically generated by configure - do not modify!
7482 EOF
7483 fi
7484
7485 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
7486
7487
7488 mkdir -p doc
7489 mkdir -p tests
7490 mkdir -p tests/api
7491 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
7492
7493 print_config ARCH_   "$config_files" $ARCH_LIST
7494 print_config HAVE_   "$config_files" $HAVE_LIST
7495 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
7496                                      $CONFIG_EXTRA      \
7497                                      $ALL_COMPONENTS    \
7498
7499 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
7500 echo "endif # FFMPEG_CONFIG_MAK" >> ffbuild/config.mak
7501
7502 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
7503 cp_if_changed $TMPH config.h
7504 touch ffbuild/.config
7505
7506 enabled x86asm && cp_if_changed $TMPASM config.asm
7507
7508 cat > $TMPH <<EOF
7509 /* Generated by ffmpeg configure */
7510 #ifndef AVUTIL_AVCONFIG_H
7511 #define AVUTIL_AVCONFIG_H
7512 EOF
7513
7514 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
7515
7516 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
7517
7518 cp_if_changed $TMPH libavutil/avconfig.h
7519
7520 # full_filter_name_foo=vf_foo
7521 # full_filter_name_bar=asrc_bar
7522 # ...
7523 eval "$(sed -n "s/^extern AVFilter ff_\([avfsinkrc]\{2,5\}\)_\(.*\);/full_filter_name_\2=\1_\2/p" $source_path/libavfilter/allfilters.c)"
7524
7525 # generate the lists of enabled components
7526 print_enabled_components(){
7527     file=$1
7528     struct_name=$2
7529     name=$3
7530     shift 3
7531     echo "static const $struct_name * const $name[] = {" > $TMPH
7532     for c in $*; do
7533         if enabled $c; then
7534             case $name in
7535                 filter_list)
7536                     eval c=\$full_filter_name_${c%_filter}
7537                 ;;
7538                 indev_list)
7539                     c=${c%_indev}_demuxer
7540                 ;;
7541                 outdev_list)
7542                     c=${c%_outdev}_muxer
7543                 ;;
7544             esac
7545             printf "    &ff_%s,\n" $c >> $TMPH
7546         fi
7547     done
7548     if [ "$name" = "filter_list" ]; then
7549         for c in asrc_abuffer vsrc_buffer asink_abuffer vsink_buffer; do
7550             printf "    &ff_%s,\n" $c >> $TMPH
7551         done
7552     fi
7553     echo "    NULL };" >> $TMPH
7554     cp_if_changed $TMPH $file
7555 }
7556
7557 print_enabled_components libavfilter/filter_list.c AVFilter filter_list $FILTER_LIST
7558 print_enabled_components libavcodec/codec_list.c AVCodec codec_list $CODEC_LIST
7559 print_enabled_components libavcodec/parser_list.c AVCodecParser parser_list $PARSER_LIST
7560 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
7561 print_enabled_components libavformat/demuxer_list.c AVInputFormat demuxer_list $DEMUXER_LIST
7562 print_enabled_components libavformat/muxer_list.c AVOutputFormat muxer_list $MUXER_LIST
7563 print_enabled_components libavdevice/indev_list.c AVInputFormat indev_list $INDEV_LIST
7564 print_enabled_components libavdevice/outdev_list.c AVOutputFormat outdev_list $OUTDEV_LIST
7565 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
7566
7567 # Settings for pkg-config files
7568
7569 cat > $TMPH <<EOF
7570 # Automatically generated by configure - do not modify!
7571 shared=$shared
7572 build_suffix=$build_suffix
7573 prefix=$prefix
7574 libdir=$libdir
7575 incdir=$incdir
7576 rpath=$(enabled rpath && echo "-Wl,-rpath,\${libdir}")
7577 source_path=${source_path}
7578 LIBPREF=${LIBPREF}
7579 LIBSUF=${LIBSUF}
7580 extralibs_avutil="$avutil_extralibs"
7581 extralibs_avcodec="$avcodec_extralibs"
7582 extralibs_avformat="$avformat_extralibs"
7583 extralibs_avdevice="$avdevice_extralibs"
7584 extralibs_avfilter="$avfilter_extralibs"
7585 extralibs_avresample="$avresample_extralibs"
7586 extralibs_postproc="$postproc_extralibs"
7587 extralibs_swscale="$swscale_extralibs"
7588 extralibs_swresample="$swresample_extralibs"
7589 EOF
7590
7591 for lib in $LIBRARY_LIST; do
7592     lib_deps="$(eval echo \$${lib}_deps)"
7593     echo ${lib}_deps=\"$lib_deps\" >> $TMPH
7594 done
7595
7596 cp_if_changed $TMPH ffbuild/config.sh