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

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