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

   1 #!/bin/sh
   2 #
   3 # FFmpeg configure script
   4 #
   5 # Copyright (c) 2000-2002 Fabrice Bellard
   6 # Copyright (c) 2005-2008 Diego Biurrun
   7 # Copyright (c) 2005-2008 Mans Rullgard
   8 #
   9
  10 # Prevent locale nonsense from breaking basic text processing.
  11 LC_ALL=C
  12 export LC_ALL
  13
  14 # make sure we are running under a compatible shell
  15 # try to make this part work with most shells
  16
  17 try_exec(){
  18     echo "Trying shell $1"
  19     type "$1" > /dev/null 2>&1 && exec "$@"
  20 }
  21
  22 unset foo
  23 (: ${foo%%bar}) 2> /dev/null
  24 E1="$?"
  25
  26 (: ${foo?}) 2> /dev/null
  27 E2="$?"
  28
  29 if test "$E1" != 0 || test "$E2" = 0; then
  30     echo "Broken shell detected.  Trying alternatives."
  31     export FF_CONF_EXEC
  32     if test "0$FF_CONF_EXEC" -lt 1; then
  33         FF_CONF_EXEC=1
  34         try_exec bash "$0" "$@"
  35     fi
  36     if test "0$FF_CONF_EXEC" -lt 2; then
  37         FF_CONF_EXEC=2
  38         try_exec ksh "$0" "$@"
  39     fi
  40     if test "0$FF_CONF_EXEC" -lt 3; then
  41         FF_CONF_EXEC=3
  42         try_exec /usr/xpg4/bin/sh "$0" "$@"
  43     fi
  44     echo "No compatible shell script interpreter found."
  45     echo "This configure script requires a POSIX-compatible shell"
  46     echo "such as bash or ksh."
  47     echo "THIS IS NOT A BUG IN FFMPEG, DO NOT REPORT IT AS SUCH."
  48     echo "Instead, install a working POSIX-compatible shell."
  49     echo "Disabling this configure test will create a broken FFmpeg."
  50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
  51         echo "This bash version ($BASH_VERSION) is broken on your platform."
  52         echo "Upgrade to a later version if available."
  53     fi
  54     exit 1
  55 fi
  56
  57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
  58
  59 show_help(){
  60     cat <<EOF
  61 Usage: configure [options]
  62 Options: [defaults in brackets after descriptions]
  63
  64 Help options:
  65   --help                   print this message
  66   --quiet                  Suppress showing informative output
  67   --list-decoders          show all available decoders
  68   --list-encoders          show all available encoders
  69   --list-hwaccels          show all available hardware accelerators
  70   --list-demuxers          show all available demuxers
  71   --list-muxers            show all available muxers
  72   --list-parsers           show all available parsers
  73   --list-protocols         show all available protocols
  74   --list-bsfs              show all available bitstream filters
  75   --list-indevs            show all available input devices
  76   --list-outdevs           show all available output devices
  77   --list-filters           show all available filters
  78
  79 Standard options:
  80   --logfile=FILE           log tests and output to FILE [ffbuild/config.log]
  81   --disable-logging        do not log configure debug information
  82   --fatal-warnings         fail if any configure warning is generated
  83   --prefix=PREFIX          install in PREFIX [$prefix_default]
  84   --bindir=DIR             install binaries in DIR [PREFIX/bin]
  85   --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
  86   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/ffmpeg]
  87   --libdir=DIR             install libs in DIR [PREFIX/lib]
  88   --shlibdir=DIR           install shared libs in DIR [LIBDIR]
  89   --incdir=DIR             install includes in DIR [PREFIX/include]
  90   --mandir=DIR             install man page in DIR [PREFIX/share/man]
  91   --pkgconfigdir=DIR       install pkg-config files in DIR [LIBDIR/pkgconfig]
  92   --enable-rpath           use rpath to allow installing libraries in paths
  93                            not part of the dynamic linker search path
  94                            use rpath when linking programs (USE WITH CARE)
  95   --install-name-dir=DIR   Darwin directory name for installed targets
  96
  97 Licensing options:
  98   --enable-gpl             allow use of GPL code, the resulting libs
  99                            and binaries will be under GPL [no]
 100   --enable-version3        upgrade (L)GPL to version 3 [no]
 101   --enable-nonfree         allow use of nonfree code, the resulting libs
 102                            and binaries will be unredistributable [no]
 103
 104 Configuration options:
 105   --disable-static         do not build static libraries [no]
 106   --enable-shared          build shared libraries [no]
 107   --enable-small           optimize for size instead of speed
 108   --disable-runtime-cpudetect disable detecting CPU capabilities at runtime (smaller binary)
 109   --enable-gray            enable full grayscale support (slower color)
 110   --disable-swscale-alpha  disable alpha channel support in swscale
 111   --disable-all            disable building components, libraries and programs
 112   --disable-autodetect     disable automatically detected external libraries [no]
 113
 114 Program options:
 115   --disable-programs       do not build command line programs
 116   --disable-ffmpeg         disable ffmpeg build
 117   --disable-ffplay         disable ffplay build
 118   --disable-ffprobe        disable ffprobe build
 119
 120 Documentation options:
 121   --disable-doc            do not build documentation
 122   --disable-htmlpages      do not build HTML documentation pages
 123   --disable-manpages       do not build man documentation pages
 124   --disable-podpages       do not build POD documentation pages
 125   --disable-txtpages       do not build text documentation pages
 126
 127 Component options:
 128   --disable-avdevice       disable libavdevice build
 129   --disable-avcodec        disable libavcodec build
 130   --disable-avformat       disable libavformat build
 131   --disable-swresample     disable libswresample build
 132   --disable-swscale        disable libswscale build
 133   --disable-postproc       disable libpostproc build
 134   --disable-avfilter       disable libavfilter build
 135   --enable-avresample      enable libavresample build (deprecated) [no]
 136   --disable-pthreads       disable pthreads [autodetect]
 137   --disable-w32threads     disable Win32 threads [autodetect]
 138   --disable-os2threads     disable OS/2 threads [autodetect]
 139   --disable-network        disable network support [no]
 140   --disable-dct            disable DCT code
 141   --disable-dwt            disable DWT code
 142   --disable-error-resilience disable error resilience code
 143   --disable-lsp            disable LSP code
 144   --disable-lzo            disable LZO decoder code
 145   --disable-mdct           disable MDCT code
 146   --disable-rdft           disable RDFT code
 147   --disable-fft            disable FFT code
 148   --disable-faan           disable floating point AAN (I)DCT code
 149   --disable-pixelutils     disable pixel utils in libavutil
 150
 151 Individual component options:
 152   --disable-everything     disable all components listed below
 153   --disable-encoder=NAME   disable encoder NAME
 154   --enable-encoder=NAME    enable encoder NAME
 155   --disable-encoders       disable all encoders
 156   --disable-decoder=NAME   disable decoder NAME
 157   --enable-decoder=NAME    enable decoder NAME
 158   --disable-decoders       disable all decoders
 159   --disable-hwaccel=NAME   disable hwaccel NAME
 160   --enable-hwaccel=NAME    enable hwaccel NAME
 161   --disable-hwaccels       disable all hwaccels
 162   --disable-muxer=NAME     disable muxer NAME
 163   --enable-muxer=NAME      enable muxer NAME
 164   --disable-muxers         disable all muxers
 165   --disable-demuxer=NAME   disable demuxer NAME
 166   --enable-demuxer=NAME    enable demuxer NAME
 167   --disable-demuxers       disable all demuxers
 168   --enable-parser=NAME     enable parser NAME
 169   --disable-parser=NAME    disable parser NAME
 170   --disable-parsers        disable all parsers
 171   --enable-bsf=NAME        enable bitstream filter NAME
 172   --disable-bsf=NAME       disable bitstream filter NAME
 173   --disable-bsfs           disable all bitstream filters
 174   --enable-protocol=NAME   enable protocol NAME
 175   --disable-protocol=NAME  disable protocol NAME
 176   --disable-protocols      disable all protocols
 177   --enable-indev=NAME      enable input device NAME
 178   --disable-indev=NAME     disable input device NAME
 179   --disable-indevs         disable input devices
 180   --enable-outdev=NAME     enable output device NAME
 181   --disable-outdev=NAME    disable output device NAME
 182   --disable-outdevs        disable output devices
 183   --disable-devices        disable all devices
 184   --enable-filter=NAME     enable filter NAME
 185   --disable-filter=NAME    disable filter NAME
 186   --disable-filters        disable all filters
 187
 188 External library support:
 189
 190   Using any of the following switches will allow FFmpeg to link to the
 191   corresponding external library. All the components depending on that library
 192   will become enabled, if all their other dependencies are met and they are not
 193   explicitly disabled. E.g. --enable-libwavpack will enable linking to
 194   libwavpack and allow the libwavpack encoder to be built, unless it is
 195   specifically disabled with --disable-encoder=libwavpack.
 196
 197   Note that only the system libraries are auto-detected. All the other external
 198   libraries must be explicitly enabled.
 199
 200   Also note that the following help text describes the purpose of the libraries
 201   themselves, not all their features will necessarily be usable by FFmpeg.
 202
 203   --disable-alsa           disable ALSA support [autodetect]
 204   --disable-appkit         disable Apple AppKit framework [autodetect]
 205   --disable-avfoundation   disable Apple AVFoundation framework [autodetect]
 206   --enable-avisynth        enable reading of AviSynth script files [no]
 207   --disable-bzlib          disable bzlib [autodetect]
 208   --disable-coreimage      disable Apple CoreImage framework [autodetect]
 209   --enable-chromaprint     enable audio fingerprinting with chromaprint [no]
 210   --enable-frei0r          enable frei0r video filtering [no]
 211   --enable-gcrypt          enable gcrypt, needed for rtmp(t)e support
 212                            if openssl, librtmp or gmp is not used [no]
 213   --enable-gmp             enable gmp, needed for rtmp(t)e support
 214                            if openssl or librtmp is not used [no]
 215   --enable-gnutls          enable gnutls, needed for https support
 216                            if openssl, libtls or mbedtls is not used [no]
 217   --disable-iconv          disable iconv [autodetect]
 218   --enable-jni             enable JNI support [no]
 219   --enable-ladspa          enable LADSPA audio filtering [no]
 220   --enable-libaom          enable AV1 video encoding/decoding via libaom [no]
 221   --enable-libaribb24      enable ARIB text and caption decoding via libaribb24 [no]
 222   --enable-libass          enable libass subtitles rendering,
 223                            needed for subtitles and ass filter [no]
 224   --enable-libbluray       enable BluRay reading using libbluray [no]
 225   --enable-libbs2b         enable bs2b DSP library [no]
 226   --enable-libcaca         enable textual display using libcaca [no]
 227   --enable-libcelt         enable CELT decoding via libcelt [no]
 228   --enable-libcdio         enable audio CD grabbing with libcdio [no]
 229   --enable-libcodec2       enable codec2 en/decoding using libcodec2 [no]
 230   --enable-libdav1d        enable AV1 decoding via libdav1d [no]
 231   --enable-libdavs2        enable AVS2 decoding via libdavs2 [no]
 232   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 233                            and libraw1394 [no]
 234   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
 235   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
 236   --enable-libfontconfig   enable libfontconfig, useful for drawtext filter [no]
 237   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
 238   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
 239   --enable-libgme          enable Game Music Emu via libgme [no]
 240   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 241   --enable-libiec61883     enable iec61883 via libiec61883 [no]
 242   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 243   --enable-libjack         enable JACK audio sound server [no]
 244   --enable-libklvanc       enable Kernel Labs VANC processing [no]
 245   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
 246   --enable-liblensfun      enable lensfun lens correction [no]
 247   --enable-libmodplug      enable ModPlug via libmodplug [no]
 248   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 249   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 250   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 251   --enable-libopencv       enable video filtering via libopencv [no]
 252   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
 253   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 254   --enable-libopenmpt      enable decoding tracked files via libopenmpt [no]
 255   --enable-libopus         enable Opus de/encoding via libopus [no]
 256   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 257   --enable-librsvg         enable SVG rasterization via librsvg [no]
 258   --enable-librubberband   enable rubberband needed for rubberband filter [no]
 259   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 260   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 261   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
 262   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
 263   --enable-libsoxr         enable Include libsoxr resampling [no]
 264   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 265   --enable-libsrt          enable Haivision SRT protocol via libsrt [no]
 266   --enable-libssh          enable SFTP protocol via libssh [no]
 267   --enable-libtensorflow   enable TensorFlow as a DNN module backend
 268                            for DNN based filters like sr [no]
 269   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
 270   --enable-libtheora       enable Theora encoding via libtheora [no]
 271   --enable-libtls          enable LibreSSL (via libtls), needed for https support
 272                            if openssl, gnutls or mbedtls is not used [no]
 273   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 274   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 275   --enable-libvidstab      enable video stabilization using vid.stab [no]
 276   --enable-libvmaf         enable vmaf filter via libvmaf [no]
 277   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 278   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 279                            native implementation exists [no]
 280   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 281   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 282   --enable-libwebp         enable WebP encoding via libwebp [no]
 283   --enable-libx264         enable H.264 encoding via x264 [no]
 284   --enable-libx265         enable HEVC encoding via x265 [no]
 285   --enable-libxavs         enable AVS encoding via xavs [no]
 286   --enable-libxavs2        enable AVS2 encoding via xavs2 [no]
 287   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
 288   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
 289   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
 290   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
 291   --enable-libxvid         enable Xvid encoding via xvidcore,
 292                            native MPEG-4/Xvid encoder exists [no]
 293   --enable-libxml2         enable XML parsing using the C library libxml2, needed
 294                            for dash demuxing support [no]
 295   --enable-libzimg         enable z.lib, needed for zscale filter [no]
 296   --enable-libzmq          enable message passing via libzmq [no]
 297   --enable-libzvbi         enable teletext support via libzvbi [no]
 298   --enable-lv2             enable LV2 audio filtering [no]
 299   --disable-lzma           disable lzma [autodetect]
 300   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
 301   --enable-mbedtls         enable mbedTLS, needed for https support
 302                            if openssl, gnutls or libtls is not used [no]
 303   --enable-mediacodec      enable Android MediaCodec support [no]
 304   --enable-libmysofa       enable libmysofa, needed for sofalizer filter [no]
 305   --enable-openal          enable OpenAL 1.1 capture support [no]
 306   --enable-opencl          enable OpenCL processing [no]
 307   --enable-opengl          enable OpenGL rendering [no]
 308   --enable-openssl         enable openssl, needed for https support
 309                            if gnutls, libtls or mbedtls is not used [no]
 310   --disable-sndio          disable sndio support [autodetect]
 311   --disable-schannel       disable SChannel SSP, needed for TLS support on
 312                            Windows if openssl and gnutls are not used [autodetect]
 313   --disable-sdl2           disable sdl2 [autodetect]
 314   --disable-securetransport disable Secure Transport, needed for TLS support
 315                            on OSX if openssl and gnutls are not used [autodetect]
 316   --enable-vapoursynth     enable VapourSynth demuxer [no]
 317   --disable-xlib           disable xlib [autodetect]
 318   --disable-zlib           disable zlib [autodetect]
 319
 320   The following libraries provide various hardware acceleration features:
 321   --disable-amf            disable AMF video encoding code [autodetect]
 322   --disable-audiotoolbox   disable Apple AudioToolbox code [autodetect]
 323   --enable-cuda-nvcc       enable Nvidia CUDA compiler [no]
 324   --disable-cuvid          disable Nvidia CUVID support [autodetect]
 325   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
 326   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
 327   --disable-ffnvcodec      disable dynamically linked Nvidia code [autodetect]
 328   --enable-libdrm          enable DRM code (Linux) [no]
 329   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
 330   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
 331   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
 332   --disable-nvdec          disable Nvidia video decoding acceleration (via hwaccel) [autodetect]
 333   --disable-nvenc          disable Nvidia video encoding code [autodetect]
 334   --enable-omx             enable OpenMAX IL code [no]
 335   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
 336   --enable-rkmpp           enable Rockchip Media Process Platform code [no]
 337   --disable-v4l2-m2m       disable V4L2 mem2mem code [autodetect]
 338   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
 339   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
 340   --disable-videotoolbox   disable VideoToolbox code [autodetect]
 341
 342 Toolchain options:
 343   --arch=ARCH              select architecture [$arch]
 344   --cpu=CPU                select the minimum required CPU (affects
 345                            instruction selection, may crash on older CPUs)
 346   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 347   --progs-suffix=SUFFIX    program name suffix []
 348   --enable-cross-compile   assume a cross-compiler is used
 349   --sysroot=PATH           root of cross-build tree
 350   --sysinclude=PATH        location of cross-build system headers
 351   --target-os=OS           compiler targets OS [$target_os]
 352   --target-exec=CMD        command to run executables on target
 353   --target-path=DIR        path to view of build directory on target
 354   --target-samples=DIR     path to samples directory on target
 355   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 356   --toolchain=NAME         set tool defaults according to NAME
 357                            (gcc-asan, clang-asan, gcc-msan, clang-msan,
 358                            gcc-tsan, clang-tsan, gcc-usan, clang-usan,
 359                            valgrind-massif, valgrind-memcheck,
 360                            msvc, icl, gcov, llvm-cov, hardened)
 361   --nm=NM                  use nm tool NM [$nm_default]
 362   --ar=AR                  use archive tool AR [$ar_default]
 363   --as=AS                  use assembler AS [$as_default]
 364   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
 365   --strip=STRIP            use strip tool STRIP [$strip_default]
 366   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 367   --x86asmexe=EXE          use nasm-compatible assembler EXE [$x86asmexe_default]
 368   --cc=CC                  use C compiler CC [$cc_default]
 369   --cxx=CXX                use C compiler CXX [$cxx_default]
 370   --objcc=OCC              use ObjC compiler OCC [$cc_default]
 371   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 372   --nvcc=NVCC              use Nvidia CUDA compiler NVCC [$nvcc_default]
 373   --ld=LD                  use linker LD [$ld_default]
 374   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 375   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 376   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 377   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
 378   --host-cc=HOSTCC         use host C compiler HOSTCC
 379   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 380   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 381   --host-ld=HOSTLD         use host linker HOSTLD
 382   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 383   --host-extralibs=HLIBS   use libs HLIBS when linking for host
 384   --host-os=OS             compiler host OS [$target_os]
 385   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 386   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 387   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
 388   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 389   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 390   --extra-ldsoflags=ELDFLAGS add ELDFLAGS to LDSOFLAGS [$LDSOFLAGS]
 391   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 392   --extra-version=STRING   version string suffix []
 393   --optflags=OPTFLAGS      override optimization-related compiler flags
 394   --nvccflags=NVCCFLAGS    override nvcc flags [$nvccflags_default]
 395   --build-suffix=SUFFIX    library name suffix []
 396   --enable-pic             build position-independent code
 397   --enable-thumb           compile for Thumb instruction set
 398   --enable-lto             use link-time optimization
 399   --env="ENV=override"     override the environment variables
 400
 401 Advanced options (experts only):
 402   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 403   --custom-allocator=NAME  use a supported custom allocator
 404   --disable-symver         disable symbol versioning
 405   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 406   --disable-safe-bitstream-reader
 407                            disable buffer boundary checking in bitreaders
 408                            (faster, but may crash)
 409   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
 410
 411 Optimization options (experts only):
 412   --disable-asm            disable all assembly optimizations
 413   --disable-altivec        disable AltiVec optimizations
 414   --disable-vsx            disable VSX optimizations
 415   --disable-power8         disable POWER8 optimizations
 416   --disable-amd3dnow       disable 3DNow! optimizations
 417   --disable-amd3dnowext    disable 3DNow! extended optimizations
 418   --disable-mmx            disable MMX optimizations
 419   --disable-mmxext         disable MMXEXT optimizations
 420   --disable-sse            disable SSE optimizations
 421   --disable-sse2           disable SSE2 optimizations
 422   --disable-sse3           disable SSE3 optimizations
 423   --disable-ssse3          disable SSSE3 optimizations
 424   --disable-sse4           disable SSE4 optimizations
 425   --disable-sse42          disable SSE4.2 optimizations
 426   --disable-avx            disable AVX optimizations
 427   --disable-xop            disable XOP optimizations
 428   --disable-fma3           disable FMA3 optimizations
 429   --disable-fma4           disable FMA4 optimizations
 430   --disable-avx2           disable AVX2 optimizations
 431   --disable-avx512         disable AVX-512 optimizations
 432   --disable-aesni          disable AESNI optimizations
 433   --disable-armv5te        disable armv5te optimizations
 434   --disable-armv6          disable armv6 optimizations
 435   --disable-armv6t2        disable armv6t2 optimizations
 436   --disable-vfp            disable VFP optimizations
 437   --disable-neon           disable NEON optimizations
 438   --disable-inline-asm     disable use of inline assembly
 439   --disable-x86asm         disable use of standalone x86 assembly
 440   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
 441   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 442   --disable-msa            disable MSA optimizations
 443   --disable-mipsfpu        disable floating point MIPS optimizations
 444   --disable-mmi            disable Loongson SIMD optimizations
 445   --disable-fast-unaligned consider unaligned accesses slow
 446
 447 Developer options (useful when working on FFmpeg itself):
 448   --disable-debug          disable debugging symbols
 449   --enable-debug=LEVEL     set the debug level [$debuglevel]
 450   --disable-optimizations  disable compiler optimizations
 451   --enable-extra-warnings  enable more compiler warnings
 452   --disable-stripping      disable stripping of executables and shared libraries
 453   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 454                            2 causes a slowdown at runtime.
 455   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 456   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 457                            leaks and errors, using the specified valgrind binary.
 458                            Cannot be combined with --target-exec
 459   --enable-ftrapv          Trap arithmetic overflows
 460   --samples=PATH           location of test samples for FATE, if not set use
 461                            \$FATE_SAMPLES at make invocation time.
 462   --enable-neon-clobber-test check NEON registers for clobbering (should be
 463                            used only for debugging purposes)
 464   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 465                            should be used only for debugging purposes)
 466   --enable-random          randomly enable/disable components
 467   --disable-random
 468   --enable-random=LIST     randomly enable/disable specific components or
 469   --disable-random=LIST    component groups. LIST is a comma-separated list
 470                            of NAME[:PROB] entries where NAME is a component
 471                            (group) and PROB the probability associated with
 472                            NAME (default 0.5).
 473   --random-seed=VALUE      seed value for --enable/disable-random
 474   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 475                            (only applies to --disable-optimizations builds)
 476   --enable-ossfuzz         Enable building fuzzer tool
 477   --libfuzzer=PATH         path to libfuzzer
 478   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
 479                            in the name) of tests whose result is ignored
 480   --enable-linux-perf      enable Linux Performance Monitor API
 481
 482 NOTE: Object files are built at the place where configure is launched.
 483 EOF
 484   exit 0
 485 }
 486
 487 if test -t 1 && which tput >/dev/null 2>&1; then
 488     ncolors=$(tput colors)
 489     if test -n "$ncolors" && test $ncolors -ge 8; then
 490         bold_color=$(tput bold)
 491         warn_color=$(tput setaf 3)
 492         error_color=$(tput setaf 1)
 493         reset_color=$(tput sgr0)
 494     fi
 495     # 72 used instead of 80 since that's the default of pr
 496     ncols=$(tput cols)
 497 fi
 498 : ${ncols:=72}
 499
 500 log(){
 501     echo "$@" >> $logfile
 502 }
 503
 504 log_file(){
 505     log BEGIN $1
 506     pr -n -t $1 >> $logfile
 507     log END $1
 508 }
 509
 510 warn(){
 511     log "WARNING: $*"
 512     WARNINGS="${WARNINGS}WARNING: $*\n"
 513 }
 514
 515 die(){
 516     log "$@"
 517     echo "$error_color$bold_color$@$reset_color"
 518     cat <<EOF
 519
 520 If you think configure made a mistake, make sure you are using the latest
 521 version from Git.  If the latest version fails, report the problem to the
 522 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 523 EOF
 524     if disabled logging; then
 525         cat <<EOF
 526 Rerun configure with logging enabled (do not use --disable-logging), and
 527 include the log this produces with your report.
 528 EOF
 529     else
 530         cat <<EOF
 531 Include the log file "$logfile" produced by configure as this will help
 532 solve the problem.
 533 EOF
 534     fi
 535     exit 1
 536 }
 537
 538 # Avoid locale weirdness, besides we really just want to translate ASCII.
 539 toupper(){
 540     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 541 }
 542
 543 tolower(){
 544     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 545 }
 546
 547 c_escape(){
 548     echo "$*" | sed 's/["\\]/\\\0/g'
 549 }
 550
 551 sh_quote(){
 552     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 553     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 554     echo "$v"
 555 }
 556
 557 cleanws(){
 558     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
 559 }
 560
 561 filter(){
 562     pat=$1
 563     shift
 564     for v; do
 565         eval "case '$v' in $pat) printf '%s ' '$v' ;; esac"
 566     done
 567 }
 568
 569 filter_out(){
 570     pat=$1
 571     shift
 572     for v; do
 573         eval "case '$v' in $pat) ;; *) printf '%s ' '$v' ;; esac"
 574     done
 575 }
 576
 577 map(){
 578     m=$1
 579     shift
 580     for v; do eval $m; done
 581 }
 582
 583 add_suffix(){
 584     suffix=$1
 585     shift
 586     for v; do echo ${v}${suffix}; done
 587 }
 588
 589 remove_suffix(){
 590     suffix=$1
 591     shift
 592     for v; do echo ${v%$suffix}; done
 593 }
 594
 595 set_all(){
 596     value=$1
 597     shift
 598     for var in $*; do
 599         eval $var=$value
 600     done
 601 }
 602
 603 set_weak(){
 604     value=$1
 605     shift
 606     for var; do
 607         eval : \${$var:=$value}
 608     done
 609 }
 610
 611 sanitize_var_name(){
 612     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 613 }
 614
 615 set_sanitized(){
 616     var=$1
 617     shift
 618     eval $(sanitize_var_name "$var")='$*'
 619 }
 620
 621 get_sanitized(){
 622     eval echo \$$(sanitize_var_name "$1")
 623 }
 624
 625 pushvar(){
 626     for pvar in $*; do
 627         eval level=\${${pvar}_level:=0}
 628         eval ${pvar}_${level}="\$$pvar"
 629         eval ${pvar}_level=$(($level+1))
 630     done
 631 }
 632
 633 popvar(){
 634     for pvar in $*; do
 635         eval level=\${${pvar}_level:-0}
 636         test $level = 0 && continue
 637         eval level=$(($level-1))
 638         eval $pvar="\${${pvar}_${level}}"
 639         eval ${pvar}_level=$level
 640         eval unset ${pvar}_${level}
 641     done
 642 }
 643
 644 request(){
 645     for var in $*; do
 646         eval ${var}_requested=yes
 647         eval $var=
 648     done
 649 }
 650
 651 warn_if_gets_disabled(){
 652     for var in $*; do
 653         WARN_IF_GETS_DISABLED_LIST="$WARN_IF_GETS_DISABLED_LIST $var"
 654     done
 655 }
 656
 657 enable(){
 658     set_all yes $*
 659 }
 660
 661 disable(){
 662     set_all no $*
 663 }
 664
 665 disable_with_reason(){
 666     disable $1
 667     eval "${1}_disable_reason=\"$2\""
 668     if requested $1; then
 669         die "ERROR: $1 requested, but $2"
 670     fi
 671 }
 672
 673 enable_weak(){
 674     set_weak yes $*
 675 }
 676
 677 disable_weak(){
 678     set_weak no $*
 679 }
 680
 681 enable_sanitized(){
 682     for var; do
 683         enable $(sanitize_var_name $var)
 684     done
 685 }
 686
 687 disable_sanitized(){
 688     for var; do
 689         disable $(sanitize_var_name $var)
 690     done
 691 }
 692
 693 do_enable_deep(){
 694     for var; do
 695         enabled $var && continue
 696         set -- $var
 697         eval enable_deep \$${var}_select
 698         var=$1
 699         eval enable_deep_weak \$${var}_suggest
 700     done
 701 }
 702
 703 enable_deep(){
 704     do_enable_deep $*
 705     enable $*
 706 }
 707
 708 enable_deep_weak(){
 709     for var; do
 710         disabled $var && continue
 711         set -- $var
 712         do_enable_deep $var
 713         var=$1
 714         enable_weak $var
 715     done
 716 }
 717
 718 requested(){
 719     test "${1#!}" = "$1" && op="=" || op="!="
 720     eval test "x\$${1#!}_requested" $op "xyes"
 721 }
 722
 723 enabled(){
 724     test "${1#!}" = "$1" && op="=" || op="!="
 725     eval test "x\$${1#!}" $op "xyes"
 726 }
 727
 728 disabled(){
 729     test "${1#!}" = "$1" && op="=" || op="!="
 730     eval test "x\$${1#!}" $op "xno"
 731 }
 732
 733 enabled_all(){
 734     for opt; do
 735         enabled $opt || return 1
 736     done
 737 }
 738
 739 disabled_all(){
 740     for opt; do
 741         disabled $opt || return 1
 742     done
 743 }
 744
 745 enabled_any(){
 746     for opt; do
 747         enabled $opt && return 0
 748     done
 749 }
 750
 751 disabled_any(){
 752     for opt; do
 753         disabled $opt && return 0
 754     done
 755     return 1
 756 }
 757
 758 set_default(){
 759     for opt; do
 760         eval : \${$opt:=\$${opt}_default}
 761     done
 762 }
 763
 764 is_in(){
 765     value=$1
 766     shift
 767     for var in $*; do
 768         [ $var = $value ] && return 0
 769     done
 770     return 1
 771 }
 772
 773 # The cfg loop is very hot (several thousands iterations), and in bash also
 774 # potentialy quite slow. Try to abort the iterations early, preferably without
 775 # calling functions. 70%+ of the time cfg is already done or without deps.
 776 check_deps(){
 777     for cfg; do
 778         eval [ x\$${cfg}_checking = xdone ] && continue
 779         eval [ x\$${cfg}_checking = xinprogress ] && die "Circular dependency for $cfg."
 780
 781         eval "
 782         dep_all=\$${cfg}_deps
 783         dep_any=\$${cfg}_deps_any
 784         dep_con=\$${cfg}_conflict
 785         dep_sel=\$${cfg}_select
 786         dep_sgs=\$${cfg}_suggest
 787         dep_ifa=\$${cfg}_if
 788         dep_ifn=\$${cfg}_if_any
 789         "
 790
 791         # most of the time here $cfg has no deps - avoid costly no-op work
 792         if [ "$dep_all$dep_any$dep_con$dep_sel$dep_sgs$dep_ifa$dep_ifn" ]; then
 793             eval ${cfg}_checking=inprogress
 794
 795             set -- $cfg "$dep_all" "$dep_any" "$dep_con" "$dep_sel" "$dep_sgs" "$dep_ifa" "$dep_ifn"
 796             check_deps $dep_all $dep_any $dep_con $dep_sel $dep_sgs $dep_ifa $dep_ifn
 797             cfg=$1; dep_all=$2; dep_any=$3; dep_con=$4; dep_sel=$5 dep_sgs=$6; dep_ifa=$7; dep_ifn=$8
 798
 799             [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 800             [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 801             enabled_all  $dep_all || { disable_with_reason $cfg "not all dependencies are satisfied: $dep_all"; }
 802             enabled_any  $dep_any || { disable_with_reason $cfg "not any dependency is satisfied: $dep_any"; }
 803             disabled_all $dep_con || { disable_with_reason $cfg "some conflicting dependencies are unsatisfied: $dep_con"; }
 804             disabled_any $dep_sel && { disable_with_reason $cfg "some selected dependency is unsatisfied: $dep_sel"; }
 805
 806             enabled $cfg && enable_deep_weak $dep_sel $dep_sgs
 807
 808             for dep in $dep_all $dep_any $dep_sel $dep_sgs; do
 809                 # filter out library deps, these do not belong in extralibs
 810                 is_in $dep $LIBRARY_LIST && continue
 811                 enabled $dep && eval append ${cfg}_extralibs ${dep}_extralibs
 812             done
 813         fi
 814
 815         eval ${cfg}_checking=done
 816     done
 817 }
 818
 819 print_config(){
 820     pfx=$1
 821     files=$2
 822     shift 2
 823     map 'eval echo "$v \${$v:-no}"' "$@" |
 824     awk "BEGIN { split(\"$files\", files) }
 825         {
 826             c = \"$pfx\" toupper(\$1);
 827             v = \$2;
 828             sub(/yes/, 1, v);
 829             sub(/no/,  0, v);
 830             for (f in files) {
 831                 file = files[f];
 832                 if (file ~ /\\.h\$/) {
 833                     printf(\"#define %s %d\\n\", c, v) >>file;
 834                 } else if (file ~ /\\.asm\$/) {
 835                     printf(\"%%define %s %d\\n\", c, v) >>file;
 836                 } else if (file ~ /\\.mak\$/) {
 837                     n = -v ? \"\" : \"!\";
 838                     printf(\"%s%s=yes\\n\", n, c) >>file;
 839                 } else if (file ~ /\\.texi\$/) {
 840                     pre = -v ? \"\" : \"@c \";
 841                     yesno = \$2;
 842                     c2 = tolower(c);
 843                     gsub(/_/, \"-\", c2);
 844                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 845                 }
 846             }
 847         }"
 848 }
 849
 850 print_enabled(){
 851     suf=$1
 852     shift
 853     for v; do
 854         enabled $v && printf "%s\n" ${v%$suf}
 855     done
 856 }
 857
 858 append(){
 859     var=$1
 860     shift
 861     eval "$var=\"\$$var $*\""
 862 }
 863
 864 prepend(){
 865     var=$1
 866     shift
 867     eval "$var=\"$* \$$var\""
 868 }
 869
 870 reverse () {
 871     eval '
 872         reverse_out=
 873         for v in $'$1'; do
 874             reverse_out="$v $reverse_out"
 875         done
 876         '$1'=$reverse_out
 877     '
 878 }
 879
 880 # keeps the last occurence of each non-unique item
 881 unique(){
 882     unique_out=
 883     eval unique_in=\$$1
 884     reverse unique_in
 885     for v in $unique_in; do
 886         # " $unique_out" +space such that every item is surrounded with spaces
 887         case " $unique_out" in *" $v "*) continue; esac  # already in list
 888         unique_out="$unique_out$v "
 889     done
 890     reverse unique_out
 891     eval $1=\$unique_out
 892 }
 893
 894 resolve(){
 895     resolve_out=
 896     eval resolve_in=\$$1
 897     for v in $resolve_in; do
 898         eval 'resolve_out="$resolve_out$'$v' "'
 899     done
 900     eval $1=\$resolve_out
 901 }
 902
 903 add_cppflags(){
 904     append CPPFLAGS "$@"
 905 }
 906
 907 add_cflags(){
 908     append CFLAGS $($cflags_filter "$@")
 909 }
 910
 911 add_cflags_headers(){
 912     append CFLAGS_HEADERS $($cflags_filter "$@")
 913 }
 914
 915 add_cxxflags(){
 916     append CXXFLAGS $($cflags_filter "$@")
 917 }
 918
 919 add_objcflags(){
 920     append OBJCFLAGS $($objcflags_filter "$@")
 921 }
 922
 923 add_asflags(){
 924     append ASFLAGS $($asflags_filter "$@")
 925 }
 926
 927 add_ldflags(){
 928     append LDFLAGS $($ldflags_filter "$@")
 929 }
 930
 931 add_ldexeflags(){
 932     append LDEXEFLAGS $($ldflags_filter "$@")
 933 }
 934
 935 add_ldsoflags(){
 936     append LDSOFLAGS $($ldflags_filter "$@")
 937 }
 938
 939 add_extralibs(){
 940     prepend extralibs $($ldflags_filter "$@")
 941 }
 942
 943 add_stripflags(){
 944     append ASMSTRIPFLAGS "$@"
 945 }
 946
 947 add_host_cppflags(){
 948     append host_cppflags "$@"
 949 }
 950
 951 add_host_cflags(){
 952     append host_cflags $($host_cflags_filter "$@")
 953 }
 954
 955 add_host_ldflags(){
 956     append host_ldflags $($host_ldflags_filter "$@")
 957 }
 958
 959 add_compat(){
 960     append compat_objs $1
 961     shift
 962     map 'add_cppflags -D$v' "$@"
 963 }
 964
 965 test_cmd(){
 966     log "$@"
 967     "$@" >> $logfile 2>&1
 968 }
 969
 970 test_stat(){
 971     log test_stat "$@"
 972     stat "$1" >> $logfile 2>&1
 973 }
 974
 975 cc_e(){
 976     eval printf '%s\\n' $CC_E
 977 }
 978
 979 cc_o(){
 980     eval printf '%s\\n' $CC_O
 981 }
 982
 983 as_o(){
 984     eval printf '%s\\n' $AS_O
 985 }
 986
 987 x86asm_o(){
 988     eval printf '%s\\n' $X86ASM_O
 989 }
 990
 991 ld_o(){
 992     eval printf '%s\\n' $LD_O
 993 }
 994
 995 hostcc_e(){
 996     eval printf '%s\\n' $HOSTCC_E
 997 }
 998
 999 hostcc_o(){
1000     eval printf '%s\\n' $HOSTCC_O
1001 }
1002
1003 nvcc_o(){
1004     eval printf '%s\\n' $NVCC_O
1005 }
1006
1007 test_cc(){
1008     log test_cc "$@"
1009     cat > $TMPC
1010     log_file $TMPC
1011     test_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
1012 }
1013
1014 test_cxx(){
1015     log test_cxx "$@"
1016     cat > $TMPCPP
1017     log_file $TMPCPP
1018     test_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
1019 }
1020
1021 test_objcc(){
1022     log test_objcc "$@"
1023     cat > $TMPM
1024     log_file $TMPM
1025     test_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
1026 }
1027
1028 test_nvcc(){
1029     log test_nvcc "$@"
1030     cat > $TMPCU
1031     log_file $TMPCU
1032     tmpcu_=$TMPCU
1033     tmpo_=$TMPO
1034     [ -x "$(command -v cygpath)" ] && tmpcu_=$(cygpath -m $tmpcu_) && tmpo_=$(cygpath -m $tmpo_)
1035     test_cmd $nvcc -ptx $NVCCFLAGS "$@" $NVCC_C $(nvcc_o $tmpo_) $tmpcu_
1036 }
1037
1038 check_nvcc() {
1039     log check_nvcc "$@"
1040     test_nvcc <<EOF
1041 extern "C" {
1042     __global__ void hello(unsigned char *data) {}
1043 }
1044 EOF
1045 }
1046
1047 test_cpp(){
1048     log test_cpp "$@"
1049     cat > $TMPC
1050     log_file $TMPC
1051     test_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
1052 }
1053
1054 test_as(){
1055     log test_as "$@"
1056     cat > $TMPS
1057     log_file $TMPS
1058     test_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
1059 }
1060
1061 test_x86asm(){
1062     log test_x86asm "$@"
1063     echo "$1" > $TMPASM
1064     log_file $TMPASM
1065     shift
1066     test_cmd $x86asmexe $X86ASMFLAGS -Werror "$@" $(x86asm_o $TMPO) $TMPASM
1067 }
1068
1069 check_cmd(){
1070     log check_cmd "$@"
1071     cmd=$1
1072     disabled $cmd && return
1073     disable $cmd
1074     test_cmd $@ && enable $cmd
1075 }
1076
1077 check_as(){
1078     log check_as "$@"
1079     name=$1
1080     code=$2
1081     shift 2
1082     disable $name
1083     test_as $@ <<EOF && enable $name
1084 $code
1085 EOF
1086 }
1087
1088 check_inline_asm(){
1089     log check_inline_asm "$@"
1090     name="$1"
1091     code="$2"
1092     shift 2
1093     disable $name
1094     test_cc "$@" <<EOF && enable $name
1095 void foo(void){ __asm__ volatile($code); }
1096 EOF
1097 }
1098
1099 check_inline_asm_flags(){
1100     log check_inline_asm_flags "$@"
1101     name="$1"
1102     code="$2"
1103     flags=''
1104     shift 2
1105     while [ "$1" != "" ]; do
1106       append flags $1
1107       shift
1108     done;
1109     disable $name
1110     cat > $TMPC <<EOF
1111 void foo(void){ __asm__ volatile($code); }
1112 EOF
1113     log_file $TMPC
1114     test_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
1115     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
1116 }
1117
1118 check_insn(){
1119     log check_insn "$@"
1120     check_inline_asm ${1}_inline "\"$2\""
1121     check_as ${1}_external "$2"
1122 }
1123
1124 check_x86asm(){
1125     log check_x86asm "$@"
1126     name=$1
1127     shift
1128     disable $name
1129     test_x86asm "$@" && enable $name
1130 }
1131
1132 test_ld(){
1133     log test_ld "$@"
1134     type=$1
1135     shift 1
1136     flags=$(filter_out '-l*|*.so' $@)
1137     libs=$(filter '-l*|*.so' $@)
1138     test_$type $($cflags_filter $flags) || return
1139     flags=$($ldflags_filter $flags)
1140     libs=$($ldflags_filter $libs)
1141     test_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
1142 }
1143
1144 check_ld(){
1145     log check_ld "$@"
1146     type=$1
1147     name=$2
1148     shift 2
1149     disable $name
1150     test_ld $type $@ && enable $name
1151 }
1152
1153 print_include(){
1154     hdr=$1
1155     test "${hdr%.h}" = "${hdr}" &&
1156         echo "#include $hdr"    ||
1157         echo "#include <$hdr>"
1158 }
1159
1160 test_code(){
1161     log test_code "$@"
1162     check=$1
1163     headers=$2
1164     code=$3
1165     shift 3
1166     {
1167         for hdr in $headers; do
1168             print_include $hdr
1169         done
1170         echo "int main(void) { $code; return 0; }"
1171     } | test_$check "$@"
1172 }
1173
1174 check_cppflags(){
1175     log check_cppflags "$@"
1176     test_cpp "$@" <<EOF && append CPPFLAGS "$@"
1177 #include <stdlib.h>
1178 EOF
1179 }
1180
1181 test_cflags(){
1182     log test_cflags "$@"
1183     set -- $($cflags_filter "$@")
1184     test_cc "$@" <<EOF
1185 int x;
1186 EOF
1187 }
1188
1189 check_cflags(){
1190     log check_cflags "$@"
1191     test_cflags "$@" && add_cflags "$@"
1192 }
1193
1194 check_cxxflags(){
1195     log check_cxxflags "$@"
1196     set -- $($cflags_filter "$@")
1197     test_cxx "$@" <<EOF && append CXXFLAGS "$@"
1198 int x;
1199 EOF
1200 }
1201
1202 test_objcflags(){
1203     log test_objcflags "$@"
1204     set -- $($objcflags_filter "$@")
1205     test_objcc "$@" <<EOF
1206 int x;
1207 EOF
1208 }
1209
1210 check_objcflags(){
1211     log check_objcflags "$@"
1212     test_objcflags "$@" && add_objcflags "$@"
1213 }
1214
1215 test_ldflags(){
1216     log test_ldflags "$@"
1217     set -- $($ldflags_filter "$@")
1218     test_ld "cc" "$@" <<EOF
1219 int main(void){ return 0; }
1220 EOF
1221 }
1222
1223 check_ldflags(){
1224     log check_ldflags "$@"
1225     test_ldflags "$@" && add_ldflags "$@"
1226 }
1227
1228 test_stripflags(){
1229     log test_stripflags "$@"
1230     # call test_cc to get a fresh TMPO
1231     test_cc <<EOF
1232 int main(void) { return 0; }
1233 EOF
1234     test_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1235 }
1236
1237 check_stripflags(){
1238     log check_stripflags "$@"
1239     test_stripflags "$@" && add_stripflags "$@"
1240 }
1241
1242 check_headers(){
1243     log check_headers "$@"
1244     headers=$1
1245     shift
1246     disable_sanitized $headers
1247     {
1248         for hdr in $headers; do
1249             print_include $hdr
1250         done
1251         echo "int x;"
1252     } | test_cpp "$@" && enable_sanitized $headers
1253 }
1254
1255 check_header_objcc(){
1256     log check_header_objcc "$@"
1257     rm -f -- "$TMPO"
1258     header=$1
1259     shift
1260     disable_sanitized $header
1261     {
1262        echo "#include <$header>"
1263        echo "int main(void) { return 0; }"
1264     } | test_objcc && test_stat "$TMPO" && enable_sanitized $header
1265 }
1266
1267 check_apple_framework(){
1268     log check_apple_framework "$@"
1269     framework="$1"
1270     name="$(tolower $framework)"
1271     header="${framework}/${framework}.h"
1272     disable $name
1273     check_header_objcc $header &&
1274         enable $name && eval ${name}_extralibs='"-framework $framework"'
1275 }
1276
1277 check_func(){
1278     log check_func "$@"
1279     func=$1
1280     shift
1281     disable $func
1282     test_ld "cc" "$@" <<EOF && enable $func
1283 extern int $func();
1284 int main(void){ $func(); }
1285 EOF
1286 }
1287
1288 check_complexfunc(){
1289     log check_complexfunc "$@"
1290     func=$1
1291     narg=$2
1292     shift 2
1293     test $narg = 2 && args="f, g" || args="f * I"
1294     disable $func
1295     test_ld "cc" "$@" <<EOF && enable $func
1296 #include <complex.h>
1297 #include <math.h>
1298 float foo(complex float f, complex float g) { return $func($args); }
1299 int main(void){ return (int) foo; }
1300 EOF
1301 }
1302
1303 check_mathfunc(){
1304     log check_mathfunc "$@"
1305     func=$1
1306     narg=$2
1307     shift 2
1308     test $narg = 2 && args="f, g" || args="f"
1309     disable $func
1310     test_ld "cc" "$@" <<EOF && enable $func
1311 #include <math.h>
1312 float foo(float f, float g) { return $func($args); }
1313 int main(void){ return (int) foo; }
1314 EOF
1315 }
1316
1317 check_func_headers(){
1318     log check_func_headers "$@"
1319     headers=$1
1320     funcs=$2
1321     shift 2
1322     {
1323         for hdr in $headers; do
1324             print_include $hdr
1325         done
1326         echo "#include <stdint.h>"
1327         for func in $funcs; do
1328             echo "long check_$func(void) { return (long) $func; }"
1329         done
1330         echo "int main(void) { int ret = 0;"
1331         # LTO could optimize out the test functions without this
1332         for func in $funcs; do
1333             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1334         done
1335         echo "return ret; }"
1336     } | test_ld "cc" "$@" && enable $funcs && enable_sanitized $headers
1337 }
1338
1339 check_class_headers_cpp(){
1340     log check_class_headers_cpp "$@"
1341     headers=$1
1342     classes=$2
1343     shift 2
1344     {
1345         for hdr in $headers; do
1346             echo "#include <$hdr>"
1347         done
1348         echo "int main(void) { "
1349         i=1
1350         for class in $classes; do
1351             echo "$class obj$i;"
1352             i=$(expr $i + 1)
1353         done
1354         echo "return 0; }"
1355     } | test_ld "cxx" "$@" && enable $funcs && enable_sanitized $headers
1356 }
1357
1358 test_cpp_condition(){
1359     log test_cpp_condition "$@"
1360     header=$1
1361     condition=$2
1362     shift 2
1363     test_cpp "$@" <<EOF
1364 #include <$header>
1365 #if !($condition)
1366 #error "unsatisfied condition: $condition"
1367 #endif
1368 EOF
1369 }
1370
1371 check_cpp_condition(){
1372     log check_cpp_condition "$@"
1373     name=$1
1374     shift 1
1375     disable $name
1376     test_cpp_condition "$@" && enable $name
1377 }
1378
1379 test_cflags_cc(){
1380     log test_cflags_cc "$@"
1381     flags=$1
1382     header=$2
1383     condition=$3
1384     shift 3
1385     set -- $($cflags_filter "$flags")
1386     test_cc "$@" <<EOF
1387 #include <$header>
1388 #if !($condition)
1389 #error "unsatisfied condition: $condition"
1390 #endif
1391 EOF
1392 }
1393
1394 check_lib(){
1395     log check_lib "$@"
1396     name="$1"
1397     headers="$2"
1398     funcs="$3"
1399     shift 3
1400     disable $name
1401     check_func_headers "$headers" "$funcs" "$@" &&
1402         enable $name && eval ${name}_extralibs="\$@"
1403 }
1404
1405 check_lib_cpp(){
1406     log check_lib_cpp "$@"
1407     name="$1"
1408     headers="$2"
1409     classes="$3"
1410     shift 3
1411     disable $name
1412     check_class_headers_cpp "$headers" "$classes" "$@" &&
1413         enable $name && eval ${name}_extralibs="\$@"
1414 }
1415
1416 test_pkg_config(){
1417     log test_pkg_config "$@"
1418     name="$1"
1419     pkg_version="$2"
1420     pkg="${2%% *}"
1421     headers="$3"
1422     funcs="$4"
1423     shift 4
1424     disable $name
1425     test_cmd $pkg_config --exists --print-errors $pkg_version || return
1426     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1427     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1428     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1429         enable $name &&
1430         set_sanitized "${name}_cflags"    $pkg_cflags &&
1431         set_sanitized "${name}_extralibs" $pkg_libs
1432 }
1433
1434 check_pkg_config(){
1435     log check_pkg_config "$@"
1436     name="$1"
1437     test_pkg_config "$@" &&
1438         eval add_cflags \$${name}_cflags
1439 }
1440
1441 test_exec(){
1442     test_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1443 }
1444
1445 check_exec_crash(){
1446     log check_exec_crash "$@"
1447     code=$(cat)
1448
1449     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1450     # are safe but may not be available everywhere.  Thus we use
1451     # raise(SIGTERM) instead.  The check is run in a subshell so we
1452     # can redirect the "Terminated" message from the shell.  SIGBUS
1453     # is not defined by standard C so it is used conditionally.
1454
1455     (test_exec "$@") >> $logfile 2>&1 <<EOF
1456 #include <signal.h>
1457 static void sighandler(int sig){
1458     raise(SIGTERM);
1459 }
1460 int foo(void){
1461     $code
1462 }
1463 int (*func_ptr)(void) = foo;
1464 int main(void){
1465     signal(SIGILL, sighandler);
1466     signal(SIGFPE, sighandler);
1467     signal(SIGSEGV, sighandler);
1468 #ifdef SIGBUS
1469     signal(SIGBUS, sighandler);
1470 #endif
1471     return func_ptr();
1472 }
1473 EOF
1474 }
1475
1476 check_type(){
1477     log check_type "$@"
1478     headers=$1
1479     type=$2
1480     shift 2
1481     disable_sanitized "$type"
1482     test_code cc "$headers" "$type v" "$@" && enable_sanitized "$type"
1483 }
1484
1485 check_struct(){
1486     log check_struct "$@"
1487     headers=$1
1488     struct=$2
1489     member=$3
1490     shift 3
1491     disable_sanitized "${struct}_${member}"
1492     test_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1493         enable_sanitized "${struct}_${member}"
1494 }
1495
1496 check_builtin(){
1497     log check_builtin "$@"
1498     name=$1
1499     headers=$2
1500     builtin=$3
1501     shift 3
1502     disable "$name"
1503     test_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1504 }
1505
1506 check_compile_assert(){
1507     log check_compile_assert "$@"
1508     name=$1
1509     headers=$2
1510     condition=$3
1511     shift 3
1512     disable "$name"
1513     test_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1514 }
1515
1516 check_cc(){
1517     log check_cc "$@"
1518     name=$1
1519     shift
1520     disable "$name"
1521     test_code cc "$@" && enable "$name"
1522 }
1523
1524 require(){
1525     log require "$@"
1526     name_version="$1"
1527     name="${1%% *}"
1528     shift
1529     check_lib $name "$@" || die "ERROR: $name_version not found"
1530 }
1531
1532 require_cc(){
1533     log require_cc "$@"
1534     name="$1"
1535     check_cc "$@" || die "ERROR: $name failed"
1536 }
1537
1538 require_cpp(){
1539     name="$1"
1540     headers="$2"
1541     classes="$3"
1542     shift 3
1543     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1544 }
1545
1546 require_headers(){
1547     log require_headers "$@"
1548     headers="$1"
1549     check_headers "$@" || die "ERROR: $headers not found"
1550 }
1551
1552 require_cpp_condition(){
1553     log require_cpp_condition "$@"
1554     condition="$3"
1555     check_cpp_condition "$@" || die "ERROR: $condition not satisfied"
1556 }
1557
1558 require_pkg_config(){
1559     log require_pkg_config "$@"
1560     pkg_version="$2"
1561     check_pkg_config "$@" || die "ERROR: $pkg_version not found using pkg-config$pkg_config_fail_message"
1562 }
1563
1564 test_host_cc(){
1565     log test_host_cc "$@"
1566     cat > $TMPC
1567     log_file $TMPC
1568     test_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1569 }
1570
1571 test_host_cpp(){
1572     log test_host_cpp "$@"
1573     cat > $TMPC
1574     log_file $TMPC
1575     test_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1576 }
1577
1578 check_host_cppflags(){
1579     log check_host_cppflags "$@"
1580     test_host_cpp "$@" <<EOF && append host_cppflags "$@"
1581 #include <stdlib.h>
1582 EOF
1583 }
1584
1585 check_host_cflags(){
1586     log check_host_cflags "$@"
1587     set -- $($host_cflags_filter "$@")
1588     test_host_cc "$@" <<EOF && append host_cflags "$@"
1589 int x;
1590 EOF
1591 }
1592
1593 test_host_cpp_condition(){
1594     log test_host_cpp_condition "$@"
1595     header=$1
1596     condition=$2
1597     shift 2
1598     test_host_cpp "$@" <<EOF
1599 #include <$header>
1600 #if !($condition)
1601 #error "unsatisfied condition: $condition"
1602 #endif
1603 EOF
1604 }
1605
1606 check_host_cpp_condition(){
1607     log check_host_cpp_condition "$@"
1608     name=$1
1609     shift 1
1610     disable $name
1611     test_host_cpp_condition "$@" && enable $name
1612 }
1613
1614 cp_if_changed(){
1615     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1616     mkdir -p "$(dirname $2)"
1617     cp -f "$1" "$2"
1618 }
1619
1620 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1621 # system-dependent things.
1622
1623 AVCODEC_COMPONENTS="
1624     bsfs
1625     decoders
1626     encoders
1627     hwaccels
1628     parsers
1629 "
1630
1631 AVDEVICE_COMPONENTS="
1632     indevs
1633     outdevs
1634 "
1635
1636 AVFILTER_COMPONENTS="
1637     filters
1638 "
1639
1640 AVFORMAT_COMPONENTS="
1641     demuxers
1642     muxers
1643     protocols
1644 "
1645
1646 COMPONENT_LIST="
1647     $AVCODEC_COMPONENTS
1648     $AVDEVICE_COMPONENTS
1649     $AVFILTER_COMPONENTS
1650     $AVFORMAT_COMPONENTS
1651 "
1652
1653 EXAMPLE_LIST="
1654     avio_dir_cmd_example
1655     avio_reading_example
1656     decode_audio_example
1657     decode_video_example
1658     demuxing_decoding_example
1659     encode_audio_example
1660     encode_video_example
1661     extract_mvs_example
1662     filter_audio_example
1663     filtering_audio_example
1664     filtering_video_example
1665     http_multiclient_example
1666     hw_decode_example
1667     metadata_example
1668     muxing_example
1669     qsvdec_example
1670     remuxing_example
1671     resampling_audio_example
1672     scaling_video_example
1673     transcode_aac_example
1674     transcoding_example
1675     vaapi_encode_example
1676     vaapi_transcode_example
1677 "
1678
1679 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1680     alsa
1681     appkit
1682     avfoundation
1683     bzlib
1684     coreimage
1685     iconv
1686     libxcb
1687     libxcb_shm
1688     libxcb_shape
1689     libxcb_xfixes
1690     lzma
1691     schannel
1692     sdl2
1693     securetransport
1694     sndio
1695     xlib
1696     zlib
1697 "
1698
1699 EXTERNAL_LIBRARY_GPL_LIST="
1700     avisynth
1701     frei0r
1702     libcdio
1703     libdavs2
1704     librubberband
1705     libvidstab
1706     libx264
1707     libx265
1708     libxavs
1709     libxavs2
1710     libxvid
1711 "
1712
1713 EXTERNAL_LIBRARY_NONFREE_LIST="
1714     decklink
1715     libfdk_aac
1716     openssl
1717     libtls
1718 "
1719
1720 EXTERNAL_LIBRARY_VERSION3_LIST="
1721     gmp
1722     libaribb24
1723     liblensfun
1724     libopencore_amrnb
1725     libopencore_amrwb
1726     libvmaf
1727     libvo_amrwbenc
1728     mbedtls
1729     rkmpp
1730 "
1731
1732 EXTERNAL_LIBRARY_GPLV3_LIST="
1733     libsmbclient
1734 "
1735
1736 EXTERNAL_LIBRARY_LIST="
1737     $EXTERNAL_LIBRARY_GPL_LIST
1738     $EXTERNAL_LIBRARY_NONFREE_LIST
1739     $EXTERNAL_LIBRARY_VERSION3_LIST
1740     $EXTERNAL_LIBRARY_GPLV3_LIST
1741     chromaprint
1742     gcrypt
1743     gnutls
1744     jni
1745     ladspa
1746     libaom
1747     libass
1748     libbluray
1749     libbs2b
1750     libcaca
1751     libcelt
1752     libcodec2
1753     libdav1d
1754     libdc1394
1755     libdrm
1756     libflite
1757     libfontconfig
1758     libfreetype
1759     libfribidi
1760     libgme
1761     libgsm
1762     libiec61883
1763     libilbc
1764     libjack
1765     libklvanc
1766     libkvazaar
1767     libmodplug
1768     libmp3lame
1769     libmysofa
1770     libopencv
1771     libopenh264
1772     libopenjpeg
1773     libopenmpt
1774     libopus
1775     libpulse
1776     librsvg
1777     librtmp
1778     libshine
1779     libsmbclient
1780     libsnappy
1781     libsoxr
1782     libspeex
1783     libsrt
1784     libssh
1785     libtensorflow
1786     libtesseract
1787     libtheora
1788     libtwolame
1789     libv4l2
1790     libvorbis
1791     libvpx
1792     libwavpack
1793     libwebp
1794     libxml2
1795     libzimg
1796     libzmq
1797     libzvbi
1798     lv2
1799     mediacodec
1800     openal
1801     opengl
1802     vapoursynth
1803 "
1804
1805 HWACCEL_AUTODETECT_LIBRARY_LIST="
1806     amf
1807     audiotoolbox
1808     crystalhd
1809     cuda
1810     cuvid
1811     d3d11va
1812     dxva2
1813     ffnvcodec
1814     nvdec
1815     nvenc
1816     vaapi
1817     vdpau
1818     videotoolbox
1819     v4l2_m2m
1820     xvmc
1821 "
1822
1823 # catchall list of things that require external libs to link
1824 EXTRALIBS_LIST="
1825     cpu_init
1826     cws2fws
1827 "
1828
1829 HWACCEL_LIBRARY_NONFREE_LIST="
1830     cuda_nvcc
1831     cuda_sdk
1832     libnpp
1833 "
1834
1835 HWACCEL_LIBRARY_LIST="
1836     $HWACCEL_LIBRARY_NONFREE_LIST
1837     libmfx
1838     mmal
1839     omx
1840     opencl
1841 "
1842
1843 DOCUMENT_LIST="
1844     doc
1845     htmlpages
1846     manpages
1847     podpages
1848     txtpages
1849 "
1850
1851 FEATURE_LIST="
1852     ftrapv
1853     gray
1854     hardcoded_tables
1855     omx_rpi
1856     runtime_cpudetect
1857     safe_bitstream_reader
1858     shared
1859     small
1860     static
1861     swscale_alpha
1862 "
1863
1864 # this list should be kept in linking order
1865 LIBRARY_LIST="
1866     avdevice
1867     avfilter
1868     swscale
1869     postproc
1870     avformat
1871     avcodec
1872     swresample
1873     avresample
1874     avutil
1875 "
1876
1877 LICENSE_LIST="
1878     gpl
1879     nonfree
1880     version3
1881 "
1882
1883 PROGRAM_LIST="
1884     ffplay
1885     ffprobe
1886     ffmpeg
1887 "
1888
1889 SUBSYSTEM_LIST="
1890     dct
1891     dwt
1892     error_resilience
1893     faan
1894     fast_unaligned
1895     fft
1896     lsp
1897     lzo
1898     mdct
1899     pixelutils
1900     network
1901     rdft
1902 "
1903
1904 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1905 CONFIG_LIST="
1906     $DOCUMENT_LIST
1907     $EXAMPLE_LIST
1908     $EXTERNAL_LIBRARY_LIST
1909     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1910     $HWACCEL_LIBRARY_LIST
1911     $HWACCEL_AUTODETECT_LIBRARY_LIST
1912     $FEATURE_LIST
1913     $LICENSE_LIST
1914     $LIBRARY_LIST
1915     $PROGRAM_LIST
1916     $SUBSYSTEM_LIST
1917     autodetect
1918     fontconfig
1919     linux_perf
1920     memory_poisoning
1921     neon_clobber_test
1922     ossfuzz
1923     pic
1924     thumb
1925     valgrind_backtrace
1926     xmm_clobber_test
1927     $COMPONENT_LIST
1928 "
1929
1930 THREADS_LIST="
1931     pthreads
1932     os2threads
1933     w32threads
1934 "
1935
1936 ATOMICS_LIST="
1937     atomics_gcc
1938     atomics_suncc
1939     atomics_win32
1940 "
1941
1942 AUTODETECT_LIBS="
1943     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1944     $HWACCEL_AUTODETECT_LIBRARY_LIST
1945     $THREADS_LIST
1946 "
1947
1948 ARCH_LIST="
1949     aarch64
1950     alpha
1951     arm
1952     avr32
1953     avr32_ap
1954     avr32_uc
1955     bfin
1956     ia64
1957     m68k
1958     mips
1959     mips64
1960     parisc
1961     ppc
1962     ppc64
1963     s390
1964     sh4
1965     sparc
1966     sparc64
1967     tilegx
1968     tilepro
1969     tomi
1970     x86
1971     x86_32
1972     x86_64
1973 "
1974
1975 ARCH_EXT_LIST_ARM="
1976     armv5te
1977     armv6
1978     armv6t2
1979     armv8
1980     neon
1981     vfp
1982     vfpv3
1983     setend
1984 "
1985
1986 ARCH_EXT_LIST_MIPS="
1987     mipsfpu
1988     mips32r2
1989     mips32r5
1990     mips64r2
1991     mips32r6
1992     mips64r6
1993     mipsdsp
1994     mipsdspr2
1995     msa
1996 "
1997
1998 ARCH_EXT_LIST_LOONGSON="
1999     loongson2
2000     loongson3
2001     mmi
2002 "
2003
2004 ARCH_EXT_LIST_X86_SIMD="
2005     aesni
2006     amd3dnow
2007     amd3dnowext
2008     avx
2009     avx2
2010     avx512
2011     fma3
2012     fma4
2013     mmx
2014     mmxext
2015     sse
2016     sse2
2017     sse3
2018     sse4
2019     sse42
2020     ssse3
2021     xop
2022 "
2023
2024 ARCH_EXT_LIST_PPC="
2025     altivec
2026     dcbzl
2027     ldbrx
2028     power8
2029     ppc4xx
2030     vsx
2031 "
2032
2033 ARCH_EXT_LIST_X86="
2034     $ARCH_EXT_LIST_X86_SIMD
2035     cpunop
2036     i686
2037 "
2038
2039 ARCH_EXT_LIST="
2040     $ARCH_EXT_LIST_ARM
2041     $ARCH_EXT_LIST_PPC
2042     $ARCH_EXT_LIST_X86
2043     $ARCH_EXT_LIST_MIPS
2044     $ARCH_EXT_LIST_LOONGSON
2045 "
2046
2047 ARCH_FEATURES="
2048     aligned_stack
2049     fast_64bit
2050     fast_clz
2051     fast_cmov
2052     local_aligned
2053     simd_align_16
2054     simd_align_32
2055     simd_align_64
2056 "
2057
2058 BUILTIN_LIST="
2059     atomic_cas_ptr
2060     machine_rw_barrier
2061     MemoryBarrier
2062     mm_empty
2063     rdtsc
2064     sem_timedwait
2065     sync_val_compare_and_swap
2066 "
2067 HAVE_LIST_CMDLINE="
2068     inline_asm
2069     symver
2070     x86asm
2071 "
2072
2073 HAVE_LIST_PUB="
2074     bigendian
2075     fast_unaligned
2076 "
2077
2078 HEADERS_LIST="
2079     arpa_inet_h
2080     asm_types_h
2081     cdio_paranoia_h
2082     cdio_paranoia_paranoia_h
2083     cuda_h
2084     dispatch_dispatch_h
2085     dev_bktr_ioctl_bt848_h
2086     dev_bktr_ioctl_meteor_h
2087     dev_ic_bt8xx_h
2088     dev_video_bktr_ioctl_bt848_h
2089     dev_video_meteor_ioctl_meteor_h
2090     direct_h
2091     dirent_h
2092     dxgidebug_h
2093     dxva_h
2094     ES2_gl_h
2095     gsm_h
2096     io_h
2097     linux_perf_event_h
2098     machine_ioctl_bt848_h
2099     machine_ioctl_meteor_h
2100     malloc_h
2101     opencv2_core_core_c_h
2102     OpenGL_gl3_h
2103     poll_h
2104     sys_param_h
2105     sys_resource_h
2106     sys_select_h
2107     sys_soundcard_h
2108     sys_time_h
2109     sys_un_h
2110     sys_videoio_h
2111     termios_h
2112     udplite_h
2113     unistd_h
2114     valgrind_valgrind_h
2115     windows_h
2116     winsock2_h
2117 "
2118
2119 INTRINSICS_LIST="
2120     intrinsics_neon
2121 "
2122
2123 COMPLEX_FUNCS="
2124     cabs
2125     cexp
2126 "
2127
2128 MATH_FUNCS="
2129     atanf
2130     atan2f
2131     cbrt
2132     cbrtf
2133     copysign
2134     cosf
2135     erf
2136     exp2
2137     exp2f
2138     expf
2139     hypot
2140     isfinite
2141     isinf
2142     isnan
2143     ldexpf
2144     llrint
2145     llrintf
2146     log2
2147     log2f
2148     log10f
2149     lrint
2150     lrintf
2151     powf
2152     rint
2153     round
2154     roundf
2155     sinf
2156     trunc
2157     truncf
2158 "
2159
2160 SYSTEM_FEATURES="
2161     dos_paths
2162     libc_msvcrt
2163     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2164     section_data_rel_ro
2165     threads
2166     uwp
2167     winrt
2168 "
2169
2170 SYSTEM_FUNCS="
2171     access
2172     aligned_malloc
2173     arc4random
2174     clock_gettime
2175     closesocket
2176     CommandLineToArgvW
2177     fcntl
2178     getaddrinfo
2179     gethrtime
2180     getopt
2181     GetProcessAffinityMask
2182     GetProcessMemoryInfo
2183     GetProcessTimes
2184     getrusage
2185     GetSystemTimeAsFileTime
2186     gettimeofday
2187     glob
2188     glXGetProcAddress
2189     gmtime_r
2190     inet_aton
2191     isatty
2192     kbhit
2193     localtime_r
2194     lstat
2195     lzo1x_999_compress
2196     mach_absolute_time
2197     MapViewOfFile
2198     memalign
2199     mkstemp
2200     mmap
2201     mprotect
2202     nanosleep
2203     PeekNamedPipe
2204     posix_memalign
2205     pthread_cancel
2206     sched_getaffinity
2207     SecItemImport
2208     SetConsoleTextAttribute
2209     SetConsoleCtrlHandler
2210     setmode
2211     setrlimit
2212     Sleep
2213     strerror_r
2214     sysconf
2215     sysctl
2216     usleep
2217     UTGetOSTypeFromString
2218     VirtualAlloc
2219     wglGetProcAddress
2220 "
2221
2222 SYSTEM_LIBRARIES="
2223     bcrypt
2224     vaapi_drm
2225     vaapi_x11
2226     vdpau_x11
2227 "
2228
2229 TOOLCHAIN_FEATURES="
2230     as_arch_directive
2231     as_dn_directive
2232     as_fpu_directive
2233     as_func
2234     as_object_arch
2235     asm_mod_q
2236     blocks_extension
2237     ebp_available
2238     ebx_available
2239     gnu_as
2240     gnu_windres
2241     ibm_asm
2242     inline_asm_direct_symbol_refs
2243     inline_asm_labels
2244     inline_asm_nonlocal_labels
2245     pragma_deprecated
2246     rsync_contimeout
2247     symver_asm_label
2248     symver_gnu_asm
2249     vfp_args
2250     xform_asm
2251     xmm_clobbers
2252 "
2253
2254 TYPES_LIST="
2255     kCMVideoCodecType_HEVC
2256     kCVPixelFormatType_420YpCbCr10BiPlanarVideoRange
2257     socklen_t
2258     struct_addrinfo
2259     struct_group_source_req
2260     struct_ip_mreq_source
2261     struct_ipv6_mreq
2262     struct_msghdr_msg_flags
2263     struct_pollfd
2264     struct_rusage_ru_maxrss
2265     struct_sctp_event_subscribe
2266     struct_sockaddr_in6
2267     struct_sockaddr_sa_len
2268     struct_sockaddr_storage
2269     struct_stat_st_mtim_tv_nsec
2270     struct_v4l2_frmivalenum_discrete
2271 "
2272
2273 HAVE_LIST="
2274     $ARCH_EXT_LIST
2275     $(add_suffix _external $ARCH_EXT_LIST)
2276     $(add_suffix _inline   $ARCH_EXT_LIST)
2277     $ARCH_FEATURES
2278     $BUILTIN_LIST
2279     $COMPLEX_FUNCS
2280     $HAVE_LIST_CMDLINE
2281     $HAVE_LIST_PUB
2282     $HEADERS_LIST
2283     $INTRINSICS_LIST
2284     $MATH_FUNCS
2285     $SYSTEM_FEATURES
2286     $SYSTEM_FUNCS
2287     $SYSTEM_LIBRARIES
2288     $THREADS_LIST
2289     $TOOLCHAIN_FEATURES
2290     $TYPES_LIST
2291     makeinfo
2292     makeinfo_html
2293     opencl_d3d11
2294     opencl_drm_arm
2295     opencl_drm_beignet
2296     opencl_dxva2
2297     opencl_vaapi_beignet
2298     opencl_vaapi_intel_media
2299     perl
2300     pod2man
2301     texi2html
2302 "
2303
2304 # options emitted with CONFIG_ prefix but not available on the command line
2305 CONFIG_EXTRA="
2306     aandcttables
2307     ac3dsp
2308     adts_header
2309     audio_frame_queue
2310     audiodsp
2311     blockdsp
2312     bswapdsp
2313     cabac
2314     cbs
2315     cbs_av1
2316     cbs_h264
2317     cbs_h265
2318     cbs_jpeg
2319     cbs_mpeg2
2320     cbs_vp9
2321     dirac_parse
2322     dnn
2323     dvprofile
2324     exif
2325     faandct
2326     faanidct
2327     fdctdsp
2328     flacdsp
2329     fmtconvert
2330     frame_thread_encoder
2331     g722dsp
2332     golomb
2333     gplv3
2334     h263dsp
2335     h264chroma
2336     h264dsp
2337     h264parse
2338     h264pred
2339     h264qpel
2340     hevcparse
2341     hpeldsp
2342     huffman
2343     huffyuvdsp
2344     huffyuvencdsp
2345     idctdsp
2346     iirfilter
2347     mdct15
2348     intrax8
2349     iso_media
2350     ividsp
2351     jpegtables
2352     lgplv3
2353     libx262
2354     llauddsp
2355     llviddsp
2356     llvidencdsp
2357     lpc
2358     lzf
2359     me_cmp
2360     mpeg_er
2361     mpegaudio
2362     mpegaudiodsp
2363     mpegaudioheader
2364     mpegvideo
2365     mpegvideoenc
2366     mss34dsp
2367     pixblockdsp
2368     qpeldsp
2369     qsv
2370     qsvdec
2371     qsvenc
2372     qsvvpp
2373     rangecoder
2374     riffdec
2375     riffenc
2376     rtpdec
2377     rtpenc_chain
2378     rv34dsp
2379     scene_sad
2380     sinewin
2381     snappy
2382     srtp
2383     startcode
2384     texturedsp
2385     texturedspenc
2386     tpeldsp
2387     vaapi_1
2388     vaapi_encode
2389     vc1dsp
2390     videodsp
2391     vp3dsp
2392     vp56dsp
2393     vp8dsp
2394     wma_freqs
2395     wmv2dsp
2396 "
2397
2398 CMDLINE_SELECT="
2399     $ARCH_EXT_LIST
2400     $CONFIG_LIST
2401     $HAVE_LIST_CMDLINE
2402     $THREADS_LIST
2403     asm
2404     cross_compile
2405     debug
2406     extra_warnings
2407     logging
2408     lto
2409     optimizations
2410     rpath
2411     stripping
2412 "
2413
2414 PATHS_LIST="
2415     bindir
2416     datadir
2417     docdir
2418     incdir
2419     libdir
2420     mandir
2421     pkgconfigdir
2422     prefix
2423     shlibdir
2424     install_name_dir
2425 "
2426
2427 CMDLINE_SET="
2428     $PATHS_LIST
2429     ar
2430     arch
2431     as
2432     assert_level
2433     build_suffix
2434     cc
2435     objcc
2436     cpu
2437     cross_prefix
2438     custom_allocator
2439     cxx
2440     dep_cc
2441     doxygen
2442     env
2443     extra_version
2444     gas
2445     host_cc
2446     host_cflags
2447     host_extralibs
2448     host_ld
2449     host_ldflags
2450     host_os
2451     ignore_tests
2452     install
2453     ld
2454     ln_s
2455     logfile
2456     malloc_prefix
2457     nm
2458     optflags
2459     nvcc
2460     nvccflags
2461     pkg_config
2462     pkg_config_flags
2463     progs_suffix
2464     random_seed
2465     ranlib
2466     samples
2467     strip
2468     sws_max_filter_size
2469     sysinclude
2470     sysroot
2471     target_exec
2472     target_os
2473     target_path
2474     target_samples
2475     tempprefix
2476     toolchain
2477     valgrind
2478     windres
2479     x86asmexe
2480 "
2481
2482 CMDLINE_APPEND="
2483     extra_cflags
2484     extra_cxxflags
2485     extra_objcflags
2486     host_cppflags
2487 "
2488
2489 # code dependency declarations
2490
2491 # architecture extensions
2492
2493 armv5te_deps="arm"
2494 armv6_deps="arm"
2495 armv6t2_deps="arm"
2496 armv8_deps="aarch64"
2497 neon_deps_any="aarch64 arm"
2498 intrinsics_neon_deps="neon"
2499 vfp_deps_any="aarch64 arm"
2500 vfpv3_deps="vfp"
2501 setend_deps="arm"
2502
2503 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2504
2505 altivec_deps="ppc"
2506 dcbzl_deps="ppc"
2507 ldbrx_deps="ppc"
2508 ppc4xx_deps="ppc"
2509 vsx_deps="altivec"
2510 power8_deps="vsx"
2511
2512 loongson2_deps="mips"
2513 loongson3_deps="mips"
2514 mips32r2_deps="mips"
2515 mips32r5_deps="mips"
2516 mips32r6_deps="mips"
2517 mips64r2_deps="mips"
2518 mips64r6_deps="mips"
2519 mipsfpu_deps="mips"
2520 mipsdsp_deps="mips"
2521 mipsdspr2_deps="mips"
2522 mmi_deps="mips"
2523 msa_deps="mipsfpu"
2524
2525 cpunop_deps="i686"
2526 x86_64_select="i686"
2527 x86_64_suggest="fast_cmov"
2528
2529 amd3dnow_deps="mmx"
2530 amd3dnowext_deps="amd3dnow"
2531 i686_deps="x86"
2532 mmx_deps="x86"
2533 mmxext_deps="mmx"
2534 sse_deps="mmxext"
2535 sse2_deps="sse"
2536 sse3_deps="sse2"
2537 ssse3_deps="sse3"
2538 sse4_deps="ssse3"
2539 sse42_deps="sse4"
2540 aesni_deps="sse42"
2541 avx_deps="sse42"
2542 xop_deps="avx"
2543 fma3_deps="avx"
2544 fma4_deps="avx"
2545 avx2_deps="avx"
2546 avx512_deps="avx2"
2547
2548 mmx_external_deps="x86asm"
2549 mmx_inline_deps="inline_asm x86"
2550 mmx_suggest="mmx_external mmx_inline"
2551
2552 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2553     eval dep=\$${ext}_deps
2554     eval ${ext}_external_deps='"${dep}_external"'
2555     eval ${ext}_inline_deps='"${dep}_inline"'
2556     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2557 done
2558
2559 aligned_stack_if_any="aarch64 ppc x86"
2560 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2561 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2562 fast_unaligned_if_any="aarch64 ppc x86"
2563 simd_align_16_if_any="altivec neon sse"
2564 simd_align_32_if_any="avx"
2565 simd_align_64_if_any="avx512"
2566
2567 # system capabilities
2568 linux_perf_deps="linux_perf_event_h"
2569 symver_if_any="symver_asm_label symver_gnu_asm"
2570 valgrind_backtrace_conflict="optimizations"
2571 valgrind_backtrace_deps="valgrind_valgrind_h"
2572
2573 # threading support
2574 atomics_gcc_if="sync_val_compare_and_swap"
2575 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2576 atomics_win32_if="MemoryBarrier"
2577 atomics_native_if_any="$ATOMICS_LIST"
2578 w32threads_deps="atomics_native"
2579 threads_if_any="$THREADS_LIST"
2580
2581 # subsystems
2582 cbs_av1_select="cbs"
2583 cbs_h264_select="cbs golomb"
2584 cbs_h265_select="cbs golomb"
2585 cbs_jpeg_select="cbs"
2586 cbs_mpeg2_select="cbs"
2587 cbs_vp9_select="cbs"
2588 dct_select="rdft"
2589 dirac_parse_select="golomb"
2590 dnn_suggest="libtensorflow"
2591 error_resilience_select="me_cmp"
2592 faandct_deps="faan"
2593 faandct_select="fdctdsp"
2594 faanidct_deps="faan"
2595 faanidct_select="idctdsp"
2596 h264dsp_select="startcode"
2597 hevcparse_select="golomb"
2598 frame_thread_encoder_deps="encoders threads"
2599 intrax8_select="blockdsp idctdsp"
2600 mdct_select="fft"
2601 mdct15_select="fft"
2602 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2603 mpeg_er_select="error_resilience"
2604 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2605 mpegaudiodsp_select="dct"
2606 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2607 mpegvideoenc_select="aandcttables me_cmp mpegvideo pixblockdsp qpeldsp"
2608 vc1dsp_select="h264chroma qpeldsp startcode"
2609 rdft_select="fft"
2610
2611 # decoders / encoders
2612 aac_decoder_select="adts_header mdct15 mdct sinewin"
2613 aac_fixed_decoder_select="adts_header mdct sinewin"
2614 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2615 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2616 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2617 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2618 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2619 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2620 adpcm_g722_decoder_select="g722dsp"
2621 adpcm_g722_encoder_select="g722dsp"
2622 aic_decoder_select="golomb idctdsp"
2623 alac_encoder_select="lpc"
2624 als_decoder_select="bswapdsp"
2625 amrnb_decoder_select="lsp"
2626 amrwb_decoder_select="lsp"
2627 amv_decoder_select="sp5x_decoder exif"
2628 amv_encoder_select="jpegtables mpegvideoenc"
2629 ape_decoder_select="bswapdsp llauddsp"
2630 apng_decoder_deps="zlib"
2631 apng_encoder_deps="zlib"
2632 apng_encoder_select="llvidencdsp"
2633 aptx_decoder_select="audio_frame_queue"
2634 aptx_encoder_select="audio_frame_queue"
2635 aptx_hd_decoder_select="audio_frame_queue"
2636 aptx_hd_encoder_select="audio_frame_queue"
2637 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2638 asv1_encoder_select="aandcttables bswapdsp fdctdsp pixblockdsp"
2639 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2640 asv2_encoder_select="aandcttables bswapdsp fdctdsp pixblockdsp"
2641 atrac1_decoder_select="mdct sinewin"
2642 atrac3_decoder_select="mdct"
2643 atrac3p_decoder_select="mdct sinewin"
2644 atrac9_decoder_select="mdct"
2645 avrn_decoder_select="exif jpegtables"
2646 bink_decoder_select="blockdsp hpeldsp"
2647 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2648 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2649 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2650 clearvideo_decoder_select="idctdsp"
2651 cllc_decoder_select="bswapdsp"
2652 comfortnoise_encoder_select="lpc"
2653 cook_decoder_select="audiodsp mdct sinewin"
2654 cscd_decoder_select="lzo"
2655 cscd_decoder_suggest="zlib"
2656 dca_decoder_select="mdct"
2657 dds_decoder_select="texturedsp"
2658 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2659 dnxhd_decoder_select="blockdsp idctdsp"
2660 dnxhd_encoder_select="blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2661 dolby_e_decoder_select="mdct"
2662 dvvideo_decoder_select="dvprofile idctdsp"
2663 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2664 dxa_decoder_deps="zlib"
2665 dxv_decoder_select="lzf texturedsp"
2666 eac3_decoder_select="ac3_decoder"
2667 eac3_encoder_select="ac3_encoder"
2668 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2669 eatgq_decoder_select="aandcttables"
2670 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2671 exr_decoder_deps="zlib"
2672 ffv1_decoder_select="rangecoder"
2673 ffv1_encoder_select="rangecoder"
2674 ffvhuff_decoder_select="huffyuv_decoder"
2675 ffvhuff_encoder_select="huffyuv_encoder"
2676 fic_decoder_select="golomb"
2677 flac_decoder_select="flacdsp"
2678 flac_encoder_select="bswapdsp flacdsp lpc"
2679 flashsv2_decoder_deps="zlib"
2680 flashsv2_encoder_deps="zlib"
2681 flashsv_decoder_deps="zlib"
2682 flashsv_encoder_deps="zlib"
2683 flv_decoder_select="h263_decoder"
2684 flv_encoder_select="h263_encoder"
2685 fourxm_decoder_select="blockdsp bswapdsp"
2686 fraps_decoder_select="bswapdsp huffman"
2687 g2m_decoder_deps="zlib"
2688 g2m_decoder_select="blockdsp idctdsp jpegtables"
2689 g729_decoder_select="audiodsp"
2690 h261_decoder_select="mpegvideo"
2691 h261_encoder_select="mpegvideoenc"
2692 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2693 h263_encoder_select="h263dsp mpegvideoenc"
2694 h263i_decoder_select="h263_decoder"
2695 h263p_decoder_select="h263_decoder"
2696 h263p_encoder_select="h263_encoder"
2697 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2698 h264_decoder_suggest="error_resilience"
2699 hap_decoder_select="snappy texturedsp"
2700 hap_encoder_deps="libsnappy"
2701 hap_encoder_select="texturedspenc"
2702 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2703 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2704 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2705 hymt_decoder_select="huffyuv_decoder"
2706 iac_decoder_select="imc_decoder"
2707 imc_decoder_select="bswapdsp fft mdct sinewin"
2708 indeo3_decoder_select="hpeldsp"
2709 indeo4_decoder_select="ividsp"
2710 indeo5_decoder_select="ividsp"
2711 interplay_video_decoder_select="hpeldsp"
2712 jpegls_decoder_select="mjpeg_decoder"
2713 jv_decoder_select="blockdsp"
2714 lagarith_decoder_select="llviddsp"
2715 ljpeg_encoder_select="idctdsp jpegtables mpegvideoenc"
2716 lscr_decoder_deps="zlib"
2717 magicyuv_decoder_select="llviddsp"
2718 magicyuv_encoder_select="llvidencdsp"
2719 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2720 metasound_decoder_select="lsp mdct sinewin"
2721 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2722 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2723 mjpeg_encoder_select="jpegtables mpegvideoenc"
2724 mjpegb_decoder_select="mjpeg_decoder"
2725 mlp_decoder_select="mlp_parser"
2726 mlp_encoder_select="lpc audio_frame_queue"
2727 motionpixels_decoder_select="bswapdsp"
2728 mp1_decoder_select="mpegaudio"
2729 mp1float_decoder_select="mpegaudio"
2730 mp2_decoder_select="mpegaudio"
2731 mp2float_decoder_select="mpegaudio"
2732 mp3_decoder_select="mpegaudio"
2733 mp3adu_decoder_select="mpegaudio"
2734 mp3adufloat_decoder_select="mpegaudio"
2735 mp3float_decoder_select="mpegaudio"
2736 mp3on4_decoder_select="mpegaudio"
2737 mp3on4float_decoder_select="mpegaudio"
2738 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2739 mpc8_decoder_select="mpegaudiodsp"
2740 mpegvideo_decoder_select="mpegvideo"
2741 mpeg1video_decoder_select="mpegvideo"
2742 mpeg1video_encoder_select="mpegvideoenc h263dsp"
2743 mpeg2video_decoder_select="mpegvideo"
2744 mpeg2video_encoder_select="mpegvideoenc h263dsp"
2745 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2746 mpeg4_encoder_select="h263_encoder"
2747 msa1_decoder_select="mss34dsp"
2748 mscc_decoder_deps="zlib"
2749 msmpeg4v1_decoder_select="h263_decoder"
2750 msmpeg4v2_decoder_select="h263_decoder"
2751 msmpeg4v2_encoder_select="h263_encoder"
2752 msmpeg4v3_decoder_select="h263_decoder"
2753 msmpeg4v3_encoder_select="h263_encoder"
2754 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2755 mts2_decoder_select="mss34dsp"
2756 mwsc_decoder_deps="zlib"
2757 mxpeg_decoder_select="mjpeg_decoder"
2758 nellymoser_decoder_select="mdct sinewin"
2759 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2760 nuv_decoder_select="idctdsp lzo"
2761 on2avc_decoder_select="mdct"
2762 opus_decoder_deps="swresample"
2763 opus_decoder_select="mdct15"
2764 opus_encoder_select="audio_frame_queue mdct15"
2765 png_decoder_deps="zlib"
2766 png_encoder_deps="zlib"
2767 png_encoder_select="llvidencdsp"
2768 prores_decoder_select="blockdsp idctdsp"
2769 prores_encoder_select="fdctdsp"
2770 qcelp_decoder_select="lsp"
2771 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2772 ra_144_decoder_select="audiodsp"
2773 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2774 ralf_decoder_select="golomb"
2775 rasc_decoder_deps="zlib"
2776 rawvideo_decoder_select="bswapdsp"
2777 rscc_decoder_deps="zlib"
2778 rtjpeg_decoder_select="me_cmp"
2779 rv10_decoder_select="h263_decoder"
2780 rv10_encoder_select="h263_encoder"
2781 rv20_decoder_select="h263_decoder"
2782 rv20_encoder_select="h263_encoder"
2783 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2784 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2785 screenpresso_decoder_deps="zlib"
2786 shorten_decoder_select="bswapdsp"
2787 sipr_decoder_select="lsp"
2788 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2789 snow_encoder_select="dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2790 sonic_decoder_select="golomb rangecoder"
2791 sonic_encoder_select="golomb rangecoder"
2792 sonic_ls_encoder_select="golomb rangecoder"
2793 sp5x_decoder_select="mjpeg_decoder"
2794 speedhq_decoder_select="mpegvideo"
2795 srgc_decoder_deps="zlib"
2796 svq1_decoder_select="hpeldsp"
2797 svq1_encoder_select="hpeldsp me_cmp mpegvideoenc"
2798 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2799 svq3_decoder_suggest="zlib"
2800 tak_decoder_select="audiodsp"
2801 tdsc_decoder_deps="zlib"
2802 tdsc_decoder_select="mjpeg_decoder"
2803 theora_decoder_select="vp3_decoder"
2804 thp_decoder_select="mjpeg_decoder"
2805 tiff_decoder_suggest="zlib lzma"
2806 tiff_encoder_suggest="zlib"
2807 truehd_decoder_select="mlp_parser"
2808 truehd_encoder_select="lpc audio_frame_queue"
2809 truemotion2_decoder_select="bswapdsp"
2810 truespeech_decoder_select="bswapdsp"
2811 tscc_decoder_deps="zlib"
2812 twinvq_decoder_select="mdct lsp sinewin"
2813 txd_decoder_select="texturedsp"
2814 utvideo_decoder_select="bswapdsp llviddsp"
2815 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2816 vble_decoder_select="llviddsp"
2817 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2818 vc1image_decoder_select="vc1_decoder"
2819 vorbis_decoder_select="mdct"
2820 vorbis_encoder_select="audio_frame_queue mdct"
2821 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2822 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2823 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2824 vp6a_decoder_select="vp6_decoder"
2825 vp6f_decoder_select="vp6_decoder"
2826 vp7_decoder_select="h264pred videodsp vp8dsp"
2827 vp8_decoder_select="h264pred videodsp vp8dsp"
2828 vp9_decoder_select="videodsp vp9_parser vp9_superframe_split_bsf"
2829 wcmv_decoder_deps="zlib"
2830 webp_decoder_select="vp8_decoder exif"
2831 wmalossless_decoder_select="llauddsp"
2832 wmapro_decoder_select="mdct sinewin wma_freqs"
2833 wmav1_decoder_select="mdct sinewin wma_freqs"
2834 wmav1_encoder_select="mdct sinewin wma_freqs"
2835 wmav2_decoder_select="mdct sinewin wma_freqs"
2836 wmav2_encoder_select="mdct sinewin wma_freqs"
2837 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2838 wmv1_decoder_select="h263_decoder"
2839 wmv1_encoder_select="h263_encoder"
2840 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2841 wmv2_encoder_select="h263_encoder wmv2dsp"
2842 wmv3_decoder_select="vc1_decoder"
2843 wmv3image_decoder_select="wmv3_decoder"
2844 xma1_decoder_select="wmapro_decoder"
2845 xma2_decoder_select="wmapro_decoder"
2846 zerocodec_decoder_deps="zlib"
2847 zlib_decoder_deps="zlib"
2848 zlib_encoder_deps="zlib"
2849 zmbv_decoder_deps="zlib"
2850 zmbv_encoder_deps="zlib"
2851
2852 # hardware accelerators
2853 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2854 cuda_deps="ffnvcodec"
2855 cuvid_deps="ffnvcodec"
2856 d3d11va_deps="dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2857 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32 user32"
2858 ffnvcodec_deps_any="libdl LoadLibrary"
2859 nvdec_deps="ffnvcodec"
2860 vaapi_x11_deps="xlib"
2861 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2862 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2863 xvmc_deps="X11_extensions_XvMClib_h"
2864
2865 h263_vaapi_hwaccel_deps="vaapi"
2866 h263_vaapi_hwaccel_select="h263_decoder"
2867 h263_videotoolbox_hwaccel_deps="videotoolbox"
2868 h263_videotoolbox_hwaccel_select="h263_decoder"
2869 h264_d3d11va_hwaccel_deps="d3d11va"
2870 h264_d3d11va_hwaccel_select="h264_decoder"
2871 h264_d3d11va2_hwaccel_deps="d3d11va"
2872 h264_d3d11va2_hwaccel_select="h264_decoder"
2873 h264_dxva2_hwaccel_deps="dxva2"
2874 h264_dxva2_hwaccel_select="h264_decoder"
2875 h264_nvdec_hwaccel_deps="nvdec"
2876 h264_nvdec_hwaccel_select="h264_decoder"
2877 h264_vaapi_hwaccel_deps="vaapi"
2878 h264_vaapi_hwaccel_select="h264_decoder"
2879 h264_vdpau_hwaccel_deps="vdpau"
2880 h264_vdpau_hwaccel_select="h264_decoder"
2881 h264_videotoolbox_hwaccel_deps="videotoolbox"
2882 h264_videotoolbox_hwaccel_select="h264_decoder"
2883 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2884 hevc_d3d11va_hwaccel_select="hevc_decoder"
2885 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2886 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2887 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2888 hevc_dxva2_hwaccel_select="hevc_decoder"
2889 hevc_nvdec_hwaccel_deps="nvdec"
2890 hevc_nvdec_hwaccel_select="hevc_decoder"
2891 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2892 hevc_vaapi_hwaccel_select="hevc_decoder"
2893 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2894 hevc_vdpau_hwaccel_select="hevc_decoder"
2895 hevc_videotoolbox_hwaccel_deps="videotoolbox"
2896 hevc_videotoolbox_hwaccel_select="hevc_decoder"
2897 mjpeg_nvdec_hwaccel_deps="nvdec"
2898 mjpeg_nvdec_hwaccel_select="mjpeg_decoder"
2899 mjpeg_vaapi_hwaccel_deps="vaapi"
2900 mjpeg_vaapi_hwaccel_select="mjpeg_decoder"
2901 mpeg_xvmc_hwaccel_deps="xvmc"
2902 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2903 mpeg1_nvdec_hwaccel_deps="nvdec"
2904 mpeg1_nvdec_hwaccel_select="mpeg1video_decoder"
2905 mpeg1_vdpau_hwaccel_deps="vdpau"
2906 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2907 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2908 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2909 mpeg1_xvmc_hwaccel_deps="xvmc"
2910 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2911 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2912 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2913 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2914 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2915 mpeg2_dxva2_hwaccel_deps="dxva2"
2916 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2917 mpeg2_nvdec_hwaccel_deps="nvdec"
2918 mpeg2_nvdec_hwaccel_select="mpeg2video_decoder"
2919 mpeg2_vaapi_hwaccel_deps="vaapi"
2920 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2921 mpeg2_vdpau_hwaccel_deps="vdpau"
2922 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2923 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2924 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2925 mpeg2_xvmc_hwaccel_deps="xvmc"
2926 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2927 mpeg4_nvdec_hwaccel_deps="nvdec"
2928 mpeg4_nvdec_hwaccel_select="mpeg4_decoder"
2929 mpeg4_vaapi_hwaccel_deps="vaapi"
2930 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2931 mpeg4_vdpau_hwaccel_deps="vdpau"
2932 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2933 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2934 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2935 vc1_d3d11va_hwaccel_deps="d3d11va"
2936 vc1_d3d11va_hwaccel_select="vc1_decoder"
2937 vc1_d3d11va2_hwaccel_deps="d3d11va"
2938 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2939 vc1_dxva2_hwaccel_deps="dxva2"
2940 vc1_dxva2_hwaccel_select="vc1_decoder"
2941 vc1_nvdec_hwaccel_deps="nvdec"
2942 vc1_nvdec_hwaccel_select="vc1_decoder"
2943 vc1_vaapi_hwaccel_deps="vaapi"
2944 vc1_vaapi_hwaccel_select="vc1_decoder"
2945 vc1_vdpau_hwaccel_deps="vdpau"
2946 vc1_vdpau_hwaccel_select="vc1_decoder"
2947 vp8_nvdec_hwaccel_deps="nvdec"
2948 vp8_nvdec_hwaccel_select="vp8_decoder"
2949 vp8_vaapi_hwaccel_deps="vaapi"
2950 vp8_vaapi_hwaccel_select="vp8_decoder"
2951 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2952 vp9_d3d11va_hwaccel_select="vp9_decoder"
2953 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2954 vp9_d3d11va2_hwaccel_select="vp9_decoder"
2955 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2956 vp9_dxva2_hwaccel_select="vp9_decoder"
2957 vp9_nvdec_hwaccel_deps="nvdec"
2958 vp9_nvdec_hwaccel_select="vp9_decoder"
2959 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2960 vp9_vaapi_hwaccel_select="vp9_decoder"
2961 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2962 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2963 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2964 wmv3_nvdec_hwaccel_select="vc1_nvdec_hwaccel"
2965 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2966 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2967
2968 # hardware-accelerated codecs
2969 omx_deps="libdl pthreads"
2970 omx_rpi_select="omx"
2971 qsv_deps="libmfx"
2972 qsvdec_select="qsv"
2973 qsvenc_select="qsv"
2974 qsvvpp_select="qsv"
2975 vaapi_encode_deps="vaapi"
2976 v4l2_m2m_deps="linux_videodev2_h sem_timedwait"
2977
2978 hwupload_cuda_filter_deps="ffnvcodec"
2979 scale_npp_filter_deps="ffnvcodec libnpp"
2980 scale_cuda_filter_deps="ffnvcodec cuda_nvcc"
2981 thumbnail_cuda_filter_deps="ffnvcodec cuda_nvcc"
2982 transpose_npp_filter_deps="ffnvcodec libnpp"
2983
2984 amf_deps_any="libdl LoadLibrary"
2985 nvenc_deps="ffnvcodec"
2986 nvenc_deps_any="libdl LoadLibrary"
2987 nvenc_encoder_deps="nvenc"
2988
2989 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
2990 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
2991 h264_amf_encoder_deps="amf"
2992 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2993 h264_cuvid_decoder_deps="cuvid"
2994 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2995 h264_mediacodec_decoder_deps="mediacodec"
2996 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2997 h264_mmal_decoder_deps="mmal"
2998 h264_nvenc_encoder_deps="nvenc"
2999 h264_omx_encoder_deps="omx"
3000 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec"
3001 h264_qsv_encoder_select="qsvenc"
3002 h264_rkmpp_decoder_deps="rkmpp"
3003 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
3004 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
3005 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
3006 h264_v4l2m2m_decoder_select="h264_mp4toannexb_bsf"
3007 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
3008 hevc_amf_encoder_deps="amf"
3009 hevc_cuvid_decoder_deps="cuvid"
3010 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
3011 hevc_mediacodec_decoder_deps="mediacodec"
3012 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
3013 hevc_nvenc_encoder_deps="nvenc"
3014 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec"
3015 hevc_qsv_encoder_select="hevcparse qsvenc"
3016 hevc_rkmpp_decoder_deps="rkmpp"
3017 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
3018 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
3019 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
3020 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
3021 hevc_v4l2m2m_decoder_select="hevc_mp4toannexb_bsf"
3022 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
3023 mjpeg_cuvid_decoder_deps="cuvid"
3024 mjpeg_qsv_encoder_deps="libmfx"
3025 mjpeg_qsv_encoder_select="qsvenc"
3026 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
3027 mjpeg_vaapi_encoder_select="cbs_jpeg jpegtables vaapi_encode"
3028 mpeg1_cuvid_decoder_deps="cuvid"
3029 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
3030 mpeg2_crystalhd_decoder_select="crystalhd"
3031 mpeg2_cuvid_decoder_deps="cuvid"
3032 mpeg2_mmal_decoder_deps="mmal"
3033 mpeg2_mediacodec_decoder_deps="mediacodec"
3034 mpeg2_qsv_decoder_select="qsvdec mpegvideo_parser"
3035 mpeg2_qsv_encoder_select="qsvenc"
3036 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
3037 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
3038 mpeg4_crystalhd_decoder_select="crystalhd"
3039 mpeg4_cuvid_decoder_deps="cuvid"
3040 mpeg4_mediacodec_decoder_deps="mediacodec"
3041 mpeg4_mmal_decoder_deps="mmal"
3042 mpeg4_omx_encoder_deps="omx"
3043 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
3044 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
3045 msmpeg4_crystalhd_decoder_select="crystalhd"
3046 nvenc_h264_encoder_select="h264_nvenc_encoder"
3047 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
3048 vc1_crystalhd_decoder_select="crystalhd"
3049 vc1_cuvid_decoder_deps="cuvid"
3050 vc1_mmal_decoder_deps="mmal"
3051 vc1_qsv_decoder_select="qsvdec vc1_parser"
3052 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
3053 vp8_cuvid_decoder_deps="cuvid"
3054 vp8_mediacodec_decoder_deps="mediacodec"
3055 vp8_qsv_decoder_select="qsvdec vp8_parser"
3056 vp8_rkmpp_decoder_deps="rkmpp"
3057 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
3058 vp8_vaapi_encoder_select="vaapi_encode"
3059 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
3060 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
3061 vp9_cuvid_decoder_deps="cuvid"
3062 vp9_mediacodec_decoder_deps="mediacodec"
3063 vp9_rkmpp_decoder_deps="rkmpp"
3064 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
3065 vp9_vaapi_encoder_select="vaapi_encode"
3066 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
3067 wmv3_crystalhd_decoder_select="crystalhd"
3068
3069 # parsers
3070 aac_parser_select="adts_header"
3071 av1_parser_select="cbs_av1"
3072 h264_parser_select="golomb h264dsp h264parse"
3073 hevc_parser_select="hevcparse"
3074 mpegaudio_parser_select="mpegaudioheader"
3075 mpegvideo_parser_select="mpegvideo"
3076 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
3077 vc1_parser_select="vc1dsp"
3078
3079 # bitstream_filters
3080 aac_adtstoasc_bsf_select="adts_header"
3081 av1_frame_split_bsf_select="cbs_av1"
3082 av1_metadata_bsf_select="cbs_av1"
3083 eac3_core_bsf_select="ac3_parser"
3084 filter_units_bsf_select="cbs"
3085 h264_metadata_bsf_deps="const_nan"
3086 h264_metadata_bsf_select="cbs_h264"
3087 h264_redundant_pps_bsf_select="cbs_h264"
3088 hevc_metadata_bsf_select="cbs_h265"
3089 mjpeg2jpeg_bsf_select="jpegtables"
3090 mpeg2_metadata_bsf_select="cbs_mpeg2"
3091 trace_headers_bsf_select="cbs"
3092 truehd_core_bsf_select="mlp_parser"
3093 vp9_metadata_bsf_select="cbs_vp9"
3094
3095 # external libraries
3096 aac_at_decoder_deps="audiotoolbox"
3097 aac_at_decoder_select="aac_adtstoasc_bsf"
3098 ac3_at_decoder_deps="audiotoolbox"
3099 ac3_at_decoder_select="ac3_parser"
3100 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
3101 alac_at_decoder_deps="audiotoolbox"
3102 amr_nb_at_decoder_deps="audiotoolbox"
3103 avisynth_deps_any="libdl LoadLibrary"
3104 avisynth_demuxer_deps="avisynth"
3105 avisynth_demuxer_select="riffdec"
3106 eac3_at_decoder_deps="audiotoolbox"
3107 eac3_at_decoder_select="ac3_parser"
3108 gsm_ms_at_decoder_deps="audiotoolbox"
3109 ilbc_at_decoder_deps="audiotoolbox"
3110 mp1_at_decoder_deps="audiotoolbox"
3111 mp2_at_decoder_deps="audiotoolbox"
3112 mp3_at_decoder_deps="audiotoolbox"
3113 mp1_at_decoder_select="mpegaudioheader"
3114 mp2_at_decoder_select="mpegaudioheader"
3115 mp3_at_decoder_select="mpegaudioheader"
3116 pcm_alaw_at_decoder_deps="audiotoolbox"
3117 pcm_mulaw_at_decoder_deps="audiotoolbox"
3118 qdmc_at_decoder_deps="audiotoolbox"
3119 qdm2_at_decoder_deps="audiotoolbox"
3120 aac_at_encoder_deps="audiotoolbox"
3121 aac_at_encoder_select="audio_frame_queue"
3122 alac_at_encoder_deps="audiotoolbox"
3123 alac_at_encoder_select="audio_frame_queue"
3124 ilbc_at_encoder_deps="audiotoolbox"
3125 ilbc_at_encoder_select="audio_frame_queue"
3126 pcm_alaw_at_encoder_deps="audiotoolbox"
3127 pcm_alaw_at_encoder_select="audio_frame_queue"
3128 pcm_mulaw_at_encoder_deps="audiotoolbox"
3129 pcm_mulaw_at_encoder_select="audio_frame_queue"
3130 chromaprint_muxer_deps="chromaprint"
3131 h264_videotoolbox_encoder_deps="pthreads"
3132 h264_videotoolbox_encoder_select="videotoolbox_encoder"
3133 hevc_videotoolbox_encoder_deps="pthreads"
3134 hevc_videotoolbox_encoder_select="videotoolbox_encoder"
3135 libaom_av1_decoder_deps="libaom"
3136 libaom_av1_encoder_deps="libaom"
3137 libaom_av1_encoder_select="extract_extradata_bsf"
3138 libaribb24_decoder_deps="libaribb24"
3139 libcelt_decoder_deps="libcelt"
3140 libcodec2_decoder_deps="libcodec2"
3141 libcodec2_encoder_deps="libcodec2"
3142 libdav1d_decoder_deps="libdav1d"
3143 libdavs2_decoder_deps="libdavs2"
3144 libfdk_aac_decoder_deps="libfdk_aac"
3145 libfdk_aac_encoder_deps="libfdk_aac"
3146 libfdk_aac_encoder_select="audio_frame_queue"
3147 libgme_demuxer_deps="libgme"
3148 libgsm_decoder_deps="libgsm"
3149 libgsm_encoder_deps="libgsm"
3150 libgsm_ms_decoder_deps="libgsm"
3151 libgsm_ms_encoder_deps="libgsm"
3152 libilbc_decoder_deps="libilbc"
3153 libilbc_encoder_deps="libilbc"
3154 libkvazaar_encoder_deps="libkvazaar"
3155 libmodplug_demuxer_deps="libmodplug"
3156 libmp3lame_encoder_deps="libmp3lame"
3157 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
3158 libopencore_amrnb_decoder_deps="libopencore_amrnb"
3159 libopencore_amrnb_encoder_deps="libopencore_amrnb"
3160 libopencore_amrnb_encoder_select="audio_frame_queue"
3161 libopencore_amrwb_decoder_deps="libopencore_amrwb"
3162 libopenh264_decoder_deps="libopenh264"
3163 libopenh264_decoder_select="h264_mp4toannexb_bsf"
3164 libopenh264_encoder_deps="libopenh264"
3165 libopenjpeg_decoder_deps="libopenjpeg"
3166 libopenjpeg_encoder_deps="libopenjpeg"
3167 libopenmpt_demuxer_deps="libopenmpt"
3168 libopus_decoder_deps="libopus"
3169 libopus_encoder_deps="libopus"
3170 libopus_encoder_select="audio_frame_queue"
3171 librsvg_decoder_deps="librsvg"
3172 libshine_encoder_deps="libshine"
3173 libshine_encoder_select="audio_frame_queue"
3174 libspeex_decoder_deps="libspeex"
3175 libspeex_encoder_deps="libspeex"
3176 libspeex_encoder_select="audio_frame_queue"
3177 libtheora_encoder_deps="libtheora"
3178 libtwolame_encoder_deps="libtwolame"
3179 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
3180 libvorbis_decoder_deps="libvorbis"
3181 libvorbis_encoder_deps="libvorbis libvorbisenc"
3182 libvorbis_encoder_select="audio_frame_queue"
3183 libvpx_vp8_decoder_deps="libvpx"
3184 libvpx_vp8_encoder_deps="libvpx"
3185 libvpx_vp9_decoder_deps="libvpx"
3186 libvpx_vp9_encoder_deps="libvpx"
3187 libwavpack_encoder_deps="libwavpack"
3188 libwavpack_encoder_select="audio_frame_queue"
3189 libwebp_encoder_deps="libwebp"
3190 libwebp_anim_encoder_deps="libwebp"
3191 libx262_encoder_deps="libx262"
3192 libx264_encoder_deps="libx264"
3193 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
3194 libx264rgb_encoder_select="libx264_encoder"
3195 libx265_encoder_deps="libx265"
3196 libxavs_encoder_deps="libxavs"
3197 libxavs2_encoder_deps="libxavs2"
3198 libxvid_encoder_deps="libxvid"
3199 libzvbi_teletext_decoder_deps="libzvbi"
3200 vapoursynth_demuxer_deps="vapoursynth"
3201 videotoolbox_suggest="coreservices"
3202 videotoolbox_deps="corefoundation coremedia corevideo"
3203 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
3204
3205 # demuxers / muxers
3206 ac3_demuxer_select="ac3_parser"
3207 aiff_muxer_select="iso_media"
3208 asf_demuxer_select="riffdec"
3209 asf_o_demuxer_select="riffdec"
3210 asf_muxer_select="riffenc"
3211 asf_stream_muxer_select="asf_muxer"
3212 avi_demuxer_select="iso_media riffdec exif"
3213 avi_muxer_select="riffenc"
3214 caf_demuxer_select="iso_media riffdec"
3215 caf_muxer_select="iso_media"
3216 dash_muxer_select="mp4_muxer"
3217 dash_demuxer_deps="libxml2"
3218 dirac_demuxer_select="dirac_parser"
3219 dts_demuxer_select="dca_parser"
3220 dtshd_demuxer_select="dca_parser"
3221 dv_demuxer_select="dvprofile"
3222 dv_muxer_select="dvprofile"
3223 dxa_demuxer_select="riffdec"
3224 eac3_demuxer_select="ac3_parser"
3225 f4v_muxer_select="mov_muxer"
3226 fifo_muxer_deps="threads"
3227 flac_demuxer_select="flac_parser"
3228 hds_muxer_select="flv_muxer"
3229 hls_muxer_select="mpegts_muxer"
3230 hls_muxer_suggest="gcrypt openssl"
3231 image2_alias_pix_demuxer_select="image2_demuxer"
3232 image2_brender_pix_demuxer_select="image2_demuxer"
3233 ipod_muxer_select="mov_muxer"
3234 ismv_muxer_select="mov_muxer"
3235 ivf_muxer_select="av1_metadata_bsf vp9_superframe_bsf"
3236 matroska_audio_muxer_select="matroska_muxer"
3237 matroska_demuxer_select="iso_media riffdec"
3238 matroska_demuxer_suggest="bzlib lzo zlib"
3239 matroska_muxer_select="iso_media riffenc"
3240 mmf_muxer_select="riffenc"
3241 mov_demuxer_select="iso_media riffdec"
3242 mov_demuxer_suggest="zlib"
3243 mov_muxer_select="iso_media riffenc rtpenc_chain"
3244 mp3_demuxer_select="mpegaudio_parser"
3245 mp3_muxer_select="mpegaudioheader"
3246 mp4_muxer_select="mov_muxer"
3247 mpegts_demuxer_select="iso_media"
3248 mpegts_muxer_select="adts_muxer latm_muxer"
3249 mpegtsraw_demuxer_select="mpegts_demuxer"
3250 mxf_d10_muxer_select="mxf_muxer"
3251 mxf_opatom_muxer_select="mxf_muxer"
3252 nut_muxer_select="riffenc"
3253 nuv_demuxer_select="riffdec"
3254 oga_muxer_select="ogg_muxer"
3255 ogg_demuxer_select="dirac_parse"
3256 ogv_muxer_select="ogg_muxer"
3257 opus_muxer_select="ogg_muxer"
3258 psp_muxer_select="mov_muxer"
3259 rtp_demuxer_select="sdp_demuxer"
3260 rtp_muxer_select="golomb"
3261 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3262 rtsp_demuxer_select="http_protocol rtpdec"
3263 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3264 sap_demuxer_select="sdp_demuxer"
3265 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3266 sdp_demuxer_select="rtpdec"
3267 smoothstreaming_muxer_select="ismv_muxer"
3268 spdif_demuxer_select="adts_header"
3269 spdif_muxer_select="adts_header"
3270 spx_muxer_select="ogg_muxer"
3271 swf_demuxer_suggest="zlib"
3272 tak_demuxer_select="tak_parser"
3273 tg2_muxer_select="mov_muxer"
3274 tgp_muxer_select="mov_muxer"
3275 vobsub_demuxer_select="mpegps_demuxer"
3276 w64_demuxer_select="wav_demuxer"
3277 w64_muxer_select="wav_muxer"
3278 wav_demuxer_select="riffdec"
3279 wav_muxer_select="riffenc"
3280 webm_muxer_select="iso_media riffenc"
3281 webm_dash_manifest_demuxer_select="matroska_demuxer"
3282 wtv_demuxer_select="mpegts_demuxer riffdec"
3283 wtv_muxer_select="mpegts_muxer riffenc"
3284 xmv_demuxer_select="riffdec"
3285 xwma_demuxer_select="riffdec"
3286
3287 # indevs / outdevs
3288 android_camera_indev_deps="android camera2ndk mediandk pthreads"
3289 android_camera_indev_extralibs="-landroid -lcamera2ndk -lmediandk"
3290 alsa_indev_deps="alsa"
3291 alsa_outdev_deps="alsa"
3292 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3293 avfoundation_indev_suggest="coregraphics applicationservices"
3294 avfoundation_indev_extralibs="-framework Foundation"
3295 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3296 caca_outdev_deps="libcaca"
3297 decklink_deps_any="libdl LoadLibrary"
3298 decklink_indev_deps="decklink threads"
3299 decklink_indev_extralibs="-lstdc++"
3300 decklink_outdev_deps="decklink threads"
3301 decklink_outdev_suggest="libklvanc"
3302 decklink_outdev_extralibs="-lstdc++"
3303 dshow_indev_deps="IBaseFilter"
3304 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3305 fbdev_indev_deps="linux_fb_h"
3306 fbdev_outdev_deps="linux_fb_h"
3307 gdigrab_indev_deps="CreateDIBSection"
3308 gdigrab_indev_extralibs="-lgdi32"
3309 gdigrab_indev_select="bmp_decoder"
3310 iec61883_indev_deps="libiec61883"
3311 jack_indev_deps="libjack"
3312 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3313 kmsgrab_indev_deps="libdrm"
3314 lavfi_indev_deps="avfilter"
3315 libcdio_indev_deps="libcdio"
3316 libdc1394_indev_deps="libdc1394"
3317 openal_indev_deps="openal"
3318 opengl_outdev_deps="opengl"
3319 opengl_outdev_suggest="sdl2"
3320 oss_indev_deps_any="sys_soundcard_h"
3321 oss_outdev_deps_any="sys_soundcard_h"
3322 pulse_indev_deps="libpulse"
3323 pulse_outdev_deps="libpulse"
3324 sdl2_outdev_deps="sdl2"
3325 sndio_indev_deps="sndio"
3326 sndio_outdev_deps="sndio"
3327 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3328 v4l2_indev_suggest="libv4l2"
3329 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3330 v4l2_outdev_suggest="libv4l2"
3331 vfwcap_indev_deps="vfw32 vfwcap_defines"
3332 xcbgrab_indev_deps="libxcb"
3333 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3334 xv_outdev_deps="xlib"
3335
3336 # protocols
3337 async_protocol_deps="threads"
3338 bluray_protocol_deps="libbluray"
3339 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3340 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl mbedtls"
3341 ffrtmpcrypt_protocol_select="tcp_protocol"
3342 ffrtmphttp_protocol_conflict="librtmp_protocol"
3343 ffrtmphttp_protocol_select="http_protocol"
3344 ftp_protocol_select="tcp_protocol"
3345 gopher_protocol_select="network"
3346 http_protocol_select="tcp_protocol"
3347 http_protocol_suggest="zlib"
3348 httpproxy_protocol_select="tcp_protocol"
3349 httpproxy_protocol_suggest="zlib"
3350 https_protocol_select="tls_protocol"
3351 https_protocol_suggest="zlib"
3352 icecast_protocol_select="http_protocol"
3353 mmsh_protocol_select="http_protocol"
3354 mmst_protocol_select="network"
3355 rtmp_protocol_conflict="librtmp_protocol"
3356 rtmp_protocol_select="tcp_protocol"
3357 rtmp_protocol_suggest="zlib"
3358 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3359 rtmpe_protocol_suggest="zlib"
3360 rtmps_protocol_conflict="librtmp_protocol"
3361 rtmps_protocol_select="tls_protocol"
3362 rtmps_protocol_suggest="zlib"
3363 rtmpt_protocol_select="ffrtmphttp_protocol"
3364 rtmpt_protocol_suggest="zlib"
3365 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3366 rtmpte_protocol_suggest="zlib"
3367 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3368 rtmpts_protocol_suggest="zlib"
3369 rtp_protocol_select="udp_protocol"
3370 schannel_conflict="openssl gnutls libtls mbedtls"
3371 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3372 sctp_protocol_select="network"
3373 securetransport_conflict="openssl gnutls libtls mbedtls"
3374 srtp_protocol_select="rtp_protocol srtp"
3375 tcp_protocol_select="network"
3376 tls_protocol_deps_any="gnutls openssl schannel securetransport libtls mbedtls"
3377 tls_protocol_select="tcp_protocol"
3378 udp_protocol_select="network"
3379 udplite_protocol_select="network"
3380 unix_protocol_deps="sys_un_h"
3381 unix_protocol_select="network"
3382
3383 # external library protocols
3384 librtmp_protocol_deps="librtmp"
3385 librtmpe_protocol_deps="librtmp"
3386 librtmps_protocol_deps="librtmp"
3387 librtmpt_protocol_deps="librtmp"
3388 librtmpte_protocol_deps="librtmp"
3389 libsmbclient_protocol_deps="libsmbclient gplv3"
3390 libsrt_protocol_deps="libsrt"
3391 libsrt_protocol_select="network"
3392 libssh_protocol_deps="libssh"
3393 libtls_conflict="openssl gnutls mbedtls"
3394
3395 # filters
3396 afftdn_filter_deps="avcodec"
3397 afftdn_filter_select="fft"
3398 afftfilt_filter_deps="avcodec"
3399 afftfilt_filter_select="fft"
3400 afir_filter_deps="avcodec"
3401 afir_filter_select="fft"
3402 amovie_filter_deps="avcodec avformat"
3403 aresample_filter_deps="swresample"
3404 ass_filter_deps="libass"
3405 atempo_filter_deps="avcodec"
3406 atempo_filter_select="rdft"
3407 avgblur_opencl_filter_deps="opencl"
3408 azmq_filter_deps="libzmq"
3409 blackframe_filter_deps="gpl"
3410 bm3d_filter_deps="avcodec"
3411 bm3d_filter_select="dct"
3412 boxblur_filter_deps="gpl"
3413 boxblur_opencl_filter_deps="opencl gpl"
3414 bs2b_filter_deps="libbs2b"
3415 colorkey_opencl_filter_deps="opencl"
3416 colormatrix_filter_deps="gpl"
3417 convolution_opencl_filter_deps="opencl"
3418 convolve_filter_deps="avcodec"
3419 convolve_filter_select="fft"
3420 coreimage_filter_deps="coreimage appkit"
3421 coreimage_filter_extralibs="-framework OpenGL"
3422 coreimagesrc_filter_deps="coreimage appkit"
3423 coreimagesrc_filter_extralibs="-framework OpenGL"
3424 cover_rect_filter_deps="avcodec avformat gpl"
3425 cropdetect_filter_deps="gpl"
3426 deconvolve_filter_deps="avcodec"
3427 deconvolve_filter_select="fft"
3428 deinterlace_qsv_filter_deps="libmfx"
3429 deinterlace_vaapi_filter_deps="vaapi"
3430 delogo_filter_deps="gpl"
3431 denoise_vaapi_filter_deps="vaapi"
3432 deshake_filter_select="pixelutils"
3433 dilation_opencl_filter_deps="opencl"
3434 drawtext_filter_deps="libfreetype"
3435 drawtext_filter_suggest="libfontconfig libfribidi"
3436 elbg_filter_deps="avcodec"
3437 eq_filter_deps="gpl"
3438 erosion_opencl_filter_deps="opencl"
3439 fftfilt_filter_deps="avcodec"
3440 fftfilt_filter_select="rdft"
3441 fftdnoiz_filter_deps="avcodec"
3442 fftdnoiz_filter_select="fft"
3443 find_rect_filter_deps="avcodec avformat gpl"
3444 firequalizer_filter_deps="avcodec"
3445 firequalizer_filter_select="rdft"
3446 flite_filter_deps="libflite"
3447 framerate_filter_select="scene_sad"
3448 freezedetect_filter_select="scene_sad"
3449 frei0r_filter_deps="frei0r libdl"
3450 frei0r_src_filter_deps="frei0r libdl"
3451 fspp_filter_deps="gpl"
3452 geq_filter_deps="gpl"
3453 histeq_filter_deps="gpl"
3454 hqdn3d_filter_deps="gpl"
3455 interlace_filter_deps="gpl"
3456 kerndeint_filter_deps="gpl"
3457 ladspa_filter_deps="ladspa libdl"
3458 lensfun_filter_deps="liblensfun version3"
3459 lv2_filter_deps="lv2"
3460 mcdeint_filter_deps="avcodec gpl"
3461 movie_filter_deps="avcodec avformat"
3462 mpdecimate_filter_deps="gpl"
3463 mpdecimate_filter_select="pixelutils"
3464 minterpolate_filter_select="scene_sad"
3465 mptestsrc_filter_deps="gpl"
3466 negate_filter_deps="lut_filter"
3467 nnedi_filter_deps="gpl"
3468 ocr_filter_deps="libtesseract"
3469 ocv_filter_deps="libopencv"
3470 openclsrc_filter_deps="opencl"
3471 overlay_opencl_filter_deps="opencl"
3472 overlay_qsv_filter_deps="libmfx"
3473 overlay_qsv_filter_select="qsvvpp"
3474 owdenoise_filter_deps="gpl"
3475 pan_filter_deps="swresample"
3476 perspective_filter_deps="gpl"
3477 phase_filter_deps="gpl"
3478 pp7_filter_deps="gpl"
3479 pp_filter_deps="gpl postproc"
3480 prewitt_opencl_filter_deps="opencl"
3481 procamp_vaapi_filter_deps="vaapi"
3482 program_opencl_filter_deps="opencl"
3483 pullup_filter_deps="gpl"
3484 removelogo_filter_deps="avcodec avformat swscale"
3485 repeatfields_filter_deps="gpl"
3486 resample_filter_deps="avresample"
3487 roberts_opencl_filter_deps="opencl"
3488 rubberband_filter_deps="librubberband"
3489 sab_filter_deps="gpl swscale"
3490 scale2ref_filter_deps="swscale"
3491 scale_filter_deps="swscale"
3492 scale_qsv_filter_deps="libmfx"
3493 select_filter_select="scene_sad"
3494 sharpness_vaapi_filter_deps="vaapi"
3495 showcqt_filter_deps="avcodec avformat swscale"
3496 showcqt_filter_suggest="libfontconfig libfreetype"
3497 showcqt_filter_select="fft"
3498 showfreqs_filter_deps="avcodec"
3499 showfreqs_filter_select="fft"
3500 showspectrum_filter_deps="avcodec"
3501 showspectrum_filter_select="fft"
3502 showspectrumpic_filter_deps="avcodec"
3503 showspectrumpic_filter_select="fft"
3504 signature_filter_deps="gpl avcodec avformat"
3505 smartblur_filter_deps="gpl swscale"
3506 sobel_opencl_filter_deps="opencl"
3507 sofalizer_filter_deps="libmysofa avcodec"
3508 sofalizer_filter_select="fft"
3509 spectrumsynth_filter_deps="avcodec"
3510 spectrumsynth_filter_select="fft"
3511 spp_filter_deps="gpl avcodec"
3512 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3513 sr_filter_deps="avformat swscale"
3514 sr_filter_select="dnn"
3515 stereo3d_filter_deps="gpl"
3516 subtitles_filter_deps="avformat avcodec libass"
3517 super2xsai_filter_deps="gpl"
3518 pixfmts_super2xsai_test_deps="super2xsai_filter"
3519 tinterlace_filter_deps="gpl"
3520 tinterlace_merge_test_deps="tinterlace_filter"
3521 tinterlace_pad_test_deps="tinterlace_filter"
3522 tonemap_filter_deps="const_nan"
3523 tonemap_opencl_filter_deps="opencl const_nan"
3524 transpose_opencl_filter_deps="opencl"
3525 transpose_vaapi_filter_deps="vaapi VAProcPipelineCaps_rotation_flags"
3526 unsharp_opencl_filter_deps="opencl"
3527 uspp_filter_deps="gpl avcodec"
3528 vaguedenoiser_filter_deps="gpl"
3529 vidstabdetect_filter_deps="libvidstab"
3530 vidstabtransform_filter_deps="libvidstab"
3531 libvmaf_filter_deps="libvmaf pthreads"
3532 zmq_filter_deps="libzmq"
3533 zoompan_filter_deps="swscale"
3534 zscale_filter_deps="libzimg const_nan"
3535 scale_vaapi_filter_deps="vaapi"
3536 vpp_qsv_filter_deps="libmfx"
3537 vpp_qsv_filter_select="qsvvpp"
3538 yadif_cuda_filter_deps="ffnvcodec cuda_nvcc"
3539
3540 # examples
3541 avio_dir_cmd_deps="avformat avutil"
3542 avio_reading_deps="avformat avcodec avutil"
3543 decode_audio_example_deps="avcodec avutil"
3544 decode_video_example_deps="avcodec avutil"
3545 demuxing_decoding_example_deps="avcodec avformat avutil"
3546 encode_audio_example_deps="avcodec avutil"
3547 encode_video_example_deps="avcodec avutil"
3548 extract_mvs_example_deps="avcodec avformat avutil"
3549 filter_audio_example_deps="avfilter avutil"
3550 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3551 filtering_video_example_deps="avfilter avcodec avformat avutil"
3552 http_multiclient_example_deps="avformat avutil fork"
3553 hw_decode_example_deps="avcodec avformat avutil"
3554 metadata_example_deps="avformat avutil"
3555 muxing_example_deps="avcodec avformat avutil swscale"
3556 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3557 remuxing_example_deps="avcodec avformat avutil"
3558 resampling_audio_example_deps="avutil swresample"
3559 scaling_video_example_deps="avutil swscale"
3560 transcode_aac_example_deps="avcodec avformat swresample"
3561 transcoding_example_deps="avfilter avcodec avformat avutil"
3562 vaapi_encode_example_deps="avcodec avutil h264_vaapi_encoder"
3563 vaapi_transcode_example_deps="avcodec avformat avutil h264_vaapi_encoder"
3564
3565 # EXTRALIBS_LIST
3566 cpu_init_extralibs="pthreads_extralibs"
3567 cws2fws_extralibs="zlib_extralibs"
3568
3569 # libraries, in any order
3570 avcodec_deps="avutil"
3571 avcodec_suggest="libm"
3572 avcodec_select="null_bsf"
3573 avdevice_deps="avformat avcodec avutil"
3574 avdevice_suggest="libm"
3575 avfilter_deps="avutil"
3576 avfilter_suggest="libm"
3577 avformat_deps="avcodec avutil"
3578 avformat_suggest="libm network zlib"
3579 avresample_deps="avutil"
3580 avresample_suggest="libm"
3581 avutil_suggest="clock_gettime ffnvcodec libm libdrm libmfx opencl user32 vaapi videotoolbox corefoundation corevideo coremedia bcrypt"
3582 postproc_deps="avutil gpl"
3583 postproc_suggest="libm"
3584 swresample_deps="avutil"
3585 swresample_suggest="libm libsoxr"
3586 swscale_deps="avutil"
3587 swscale_suggest="libm"
3588
3589 avcodec_extralibs="pthreads_extralibs iconv_extralibs dxva2_extralibs"
3590 avfilter_extralibs="pthreads_extralibs"
3591 avutil_extralibs="d3d11va_extralibs nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3592
3593 # programs
3594 ffmpeg_deps="avcodec avfilter avformat"
3595 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3596                hflip_filter null_filter
3597                transpose_filter trim_filter vflip_filter"
3598 ffmpeg_suggest="ole32 psapi shell32"
3599 ffplay_deps="avcodec avformat swscale swresample sdl2"
3600 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3601 ffplay_suggest="shell32"
3602 ffprobe_deps="avcodec avformat"
3603 ffprobe_suggest="shell32"
3604
3605 # documentation
3606 podpages_deps="perl"
3607 manpages_deps="perl pod2man"
3608 htmlpages_deps="perl"
3609 htmlpages_deps_any="makeinfo_html texi2html"
3610 txtpages_deps="perl makeinfo"
3611 doc_deps_any="manpages htmlpages podpages txtpages"
3612
3613 # default parameters
3614
3615 logfile="ffbuild/config.log"
3616
3617 # installation paths
3618 prefix_default="/usr/local"
3619 bindir_default='${prefix}/bin'
3620 datadir_default='${prefix}/share/ffmpeg'
3621 docdir_default='${prefix}/share/doc/ffmpeg'
3622 incdir_default='${prefix}/include'
3623 libdir_default='${prefix}/lib'
3624 mandir_default='${prefix}/share/man'
3625
3626 # toolchain
3627 ar_default="ar"
3628 cc_default="gcc"
3629 cxx_default="g++"
3630 host_cc_default="gcc"
3631 doxygen_default="doxygen"
3632 install="install"
3633 ln_s_default="ln -s -f"
3634 nm_default="nm -g"
3635 pkg_config_default=pkg-config
3636 ranlib_default="ranlib"
3637 strip_default="strip"
3638 version_script='--version-script'
3639 objformat="elf32"
3640 x86asmexe_default="nasm"
3641 windres_default="windres"
3642 nvcc_default="nvcc"
3643 nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
3644 striptype="direct"
3645
3646 # OS
3647 target_os_default=$(tolower $(uname -s))
3648 host_os=$target_os_default
3649
3650 # machine
3651 if test "$target_os_default" = aix; then
3652     arch_default=$(uname -p)
3653     strip_default="strip -X32_64"
3654     nm_default="nm -g -X32_64"
3655 else
3656     arch_default=$(uname -m)
3657 fi
3658 cpu="generic"
3659 intrinsics="none"
3660
3661 # configurable options
3662 enable $PROGRAM_LIST
3663 enable $DOCUMENT_LIST
3664 enable $EXAMPLE_LIST
3665 enable $(filter_out avresample $LIBRARY_LIST)
3666 enable stripping
3667
3668 enable asm
3669 enable debug
3670 enable doc
3671 enable faan faandct faanidct
3672 enable optimizations
3673 enable runtime_cpudetect
3674 enable safe_bitstream_reader
3675 enable static
3676 enable swscale_alpha
3677 enable valgrind_backtrace
3678
3679 sws_max_filter_size_default=256
3680 set_default sws_max_filter_size
3681
3682 # internal components are enabled by default
3683 enable $EXTRALIBS_LIST
3684
3685 # Avoid external, non-system, libraries getting enabled by dependency resolution
3686 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3687
3688 # build settings
3689 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3690 LIBPREF="lib"
3691 LIBSUF=".a"
3692 FULLNAME='$(NAME)$(BUILDSUF)'
3693 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3694 SLIBPREF="lib"
3695 SLIBSUF=".so"
3696 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3697 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3698 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3699 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3700 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3701 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3702 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3703
3704 asflags_filter=echo
3705 cflags_filter=echo
3706 ldflags_filter=echo
3707
3708 AS_C='-c'
3709 AS_O='-o $@'
3710 CC_C='-c'
3711 CC_E='-E -o $@'
3712 CC_O='-o $@'
3713 CXX_C='-c'
3714 CXX_O='-o $@'
3715 OBJCC_C='-c'
3716 OBJCC_E='-E -o $@'
3717 OBJCC_O='-o $@'
3718 X86ASM_O='-o $@'
3719 LD_O='-o $@'
3720 LD_LIB='-l%'
3721 LD_PATH='-L'
3722 HOSTCC_C='-c'
3723 HOSTCC_E='-E -o $@'
3724 HOSTCC_O='-o $@'
3725 HOSTLD_O='-o $@'
3726 NVCC_C='-c'
3727 NVCC_O='-o $@'
3728
3729 host_extralibs='-lm'
3730 host_cflags_filter=echo
3731 host_ldflags_filter=echo
3732
3733 target_path='$(CURDIR)'
3734
3735 # since the object filename is not given with the -MM flag, the compiler
3736 # is only able to print the basename, and we must add the path ourselves
3737 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3738 DEPFLAGS='-MM'
3739
3740 mkdir -p ffbuild
3741
3742 # find source path
3743 if test -f configure; then
3744     source_path=.
3745 elif test -f src/configure; then
3746     source_path=src
3747 else
3748     source_path=$(cd $(dirname "$0"); pwd)
3749     case "$source_path" in
3750         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3751     esac
3752     test -e "$source_path/config.h" &&
3753         die "Out of tree builds are impossible with config.h in source dir."
3754 fi
3755
3756 for v in "$@"; do
3757     r=${v#*=}
3758     l=${v%"$r"}
3759     r=$(sh_quote "$r")
3760     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3761 done
3762
3763 find_things_extern(){
3764     thing=$1
3765     pattern=$2
3766     file=$source_path/$3
3767     out=${4:-$thing}
3768     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$out/p" "$file"
3769 }
3770
3771 find_filters_extern(){
3772     file=$source_path/$1
3773     sed -n 's/^extern AVFilter ff_[avfsinkrc]\{2,5\}_\([[:alnum:]_]\{1,\}\);/\1_filter/p' $file
3774 }
3775
3776 FILTER_LIST=$(find_filters_extern libavfilter/allfilters.c)
3777 OUTDEV_LIST=$(find_things_extern muxer AVOutputFormat libavdevice/alldevices.c outdev)
3778 INDEV_LIST=$(find_things_extern demuxer AVInputFormat libavdevice/alldevices.c indev)
3779 MUXER_LIST=$(find_things_extern muxer AVOutputFormat libavformat/allformats.c)
3780 DEMUXER_LIST=$(find_things_extern demuxer AVInputFormat libavformat/allformats.c)
3781 ENCODER_LIST=$(find_things_extern encoder AVCodec libavcodec/allcodecs.c)
3782 DECODER_LIST=$(find_things_extern decoder AVCodec libavcodec/allcodecs.c)
3783 CODEC_LIST="
3784     $ENCODER_LIST
3785     $DECODER_LIST
3786 "
3787 PARSER_LIST=$(find_things_extern parser AVCodecParser libavcodec/parsers.c)
3788 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3789 HWACCEL_LIST=$(find_things_extern hwaccel AVHWAccel libavcodec/hwaccels.h)
3790 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3791
3792 AVCODEC_COMPONENTS_LIST="
3793     $BSF_LIST
3794     $DECODER_LIST
3795     $ENCODER_LIST
3796     $HWACCEL_LIST
3797     $PARSER_LIST
3798 "
3799
3800 AVDEVICE_COMPONENTS_LIST="
3801     $INDEV_LIST
3802     $OUTDEV_LIST
3803 "
3804
3805 AVFILTER_COMPONENTS_LIST="
3806     $FILTER_LIST
3807 "
3808
3809 AVFORMAT_COMPONENTS_LIST="
3810     $DEMUXER_LIST
3811     $MUXER_LIST
3812     $PROTOCOL_LIST
3813 "
3814
3815 ALL_COMPONENTS="
3816     $AVCODEC_COMPONENTS_LIST
3817     $AVDEVICE_COMPONENTS_LIST
3818     $AVFILTER_COMPONENTS_LIST
3819     $AVFORMAT_COMPONENTS_LIST
3820 "
3821
3822 for n in $COMPONENT_LIST; do
3823     v=$(toupper ${n%s})_LIST
3824     eval enable \$$v
3825     eval ${n}_if_any="\$$v"
3826 done
3827
3828 enable $ARCH_EXT_LIST
3829
3830 die_unknown(){
3831     echo "Unknown option \"$1\"."
3832     echo "See $0 --help for available options."
3833     exit 1
3834 }
3835
3836 print_in_columns() {
3837     cols=$(expr $ncols / 24)
3838     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3839 }
3840
3841 show_list() {
3842     suffix=_$1
3843     shift
3844     echo $* | sed s/$suffix//g | print_in_columns
3845     exit 0
3846 }
3847
3848 rand_list(){
3849     IFS=', '
3850     set -- $*
3851     unset IFS
3852     for thing; do
3853         comp=${thing%:*}
3854         prob=${thing#$comp}
3855         prob=${prob#:}
3856         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3857         echo "prob ${prob:-0.5}"
3858         printf '%s\n' $comp
3859     done
3860 }
3861
3862 do_random(){
3863     action=$1
3864     shift
3865     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3866     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3867 }
3868
3869 for opt do
3870     optval="${opt#*=}"
3871     case "$opt" in
3872         --extra-ldflags=*)
3873             add_ldflags $optval
3874         ;;
3875         --extra-ldexeflags=*)
3876             add_ldexeflags $optval
3877         ;;
3878         --extra-ldsoflags=*)
3879             add_ldsoflags $optval
3880         ;;
3881         --extra-ldlibflags=*)
3882             warn "The --extra-ldlibflags option is only provided for compatibility and will be\n"\
3883                  "removed in the future. Use --extra-ldsoflags instead."
3884             add_ldsoflags $optval
3885         ;;
3886         --extra-libs=*)
3887             add_extralibs $optval
3888         ;;
3889         --disable-devices)
3890             disable $INDEV_LIST $OUTDEV_LIST
3891         ;;
3892         --enable-debug=*)
3893             debuglevel="$optval"
3894         ;;
3895         --disable-programs)
3896             disable $PROGRAM_LIST
3897         ;;
3898         --disable-everything)
3899             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3900         ;;
3901         --disable-all)
3902             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3903             disable $LIBRARY_LIST $PROGRAM_LIST doc
3904             enable avutil
3905         ;;
3906         --enable-random|--disable-random)
3907             action=${opt%%-random}
3908             do_random ${action#--} $COMPONENT_LIST
3909         ;;
3910         --enable-random=*|--disable-random=*)
3911             action=${opt%%-random=*}
3912             do_random ${action#--} $optval
3913         ;;
3914         --enable-sdl)
3915             enable sdl2
3916         ;;
3917         --enable-*=*|--disable-*=*)
3918             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3919             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3920             eval list=\$$(toupper $thing)_LIST
3921             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3922             list=$(filter "$name" $list)
3923             [ "$list" = "" ] && warn "Option $opt did not match anything"
3924             test $action = enable && warn_if_gets_disabled $list
3925             $action $list
3926         ;;
3927         --enable-yasm|--disable-yasm)
3928             warn "The ${opt} option is only provided for compatibility and will be\n"\
3929                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3930             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3931         ;;
3932         --yasmexe=*)
3933             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3934                  "removed in the future. Use --x86asmexe instead."
3935             x86asmexe="$optval"
3936         ;;
3937         --enable-?*|--disable-?*)
3938             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3939             if is_in $option $COMPONENT_LIST; then
3940                 test $action = disable && action=unset
3941                 eval $action \$$(toupper ${option%s})_LIST
3942             elif is_in $option $CMDLINE_SELECT; then
3943                 $action $option
3944             else
3945                 die_unknown $opt
3946             fi
3947         ;;
3948         --list-*)
3949             NAME="${opt#--list-}"
3950             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3951             NAME=${NAME%s}
3952             eval show_list $NAME \$$(toupper $NAME)_LIST
3953         ;;
3954         --help|-h) show_help
3955         ;;
3956         --quiet|-q) quiet=yes
3957         ;;
3958         --fatal-warnings) enable fatal_warnings
3959         ;;
3960         --libfuzzer=*)
3961             libfuzzer_path="$optval"
3962         ;;
3963         *)
3964             optname="${opt%%=*}"
3965             optname="${optname#--}"
3966             optname=$(echo "$optname" | sed 's/-/_/g')
3967             if is_in $optname $CMDLINE_SET; then
3968                 eval $optname='$optval'
3969             elif is_in $optname $CMDLINE_APPEND; then
3970                 append $optname "$optval"
3971             else
3972                 die_unknown $opt
3973             fi
3974         ;;
3975     esac
3976 done
3977
3978 for e in $env; do
3979     eval "export $e"
3980 done
3981
3982 if disabled autodetect; then
3983
3984     # Unless iconv is explicitely disabled by the user, we still want to probe
3985     # for the iconv from the libc.
3986     disabled iconv || enable libc_iconv
3987
3988     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3989     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3990 fi
3991 # Mark specifically enabled, but normally autodetected libraries as requested.
3992 for lib in $AUTODETECT_LIBS; do
3993     enabled $lib && request $lib
3994 done
3995 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
3996 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3997 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3998
3999 disabled logging && logfile=/dev/null
4000
4001 # command line configuration sanity checks
4002
4003 # we need to build at least one lib type
4004 if ! enabled_any static shared; then
4005     cat <<EOF
4006 At least one library type must be built.
4007 Specify --enable-static to build the static libraries or --enable-shared to
4008 build the shared libraries as well. To only build the shared libraries specify
4009 --disable-static in addition to --enable-shared.
4010 EOF
4011     exit 1
4012 fi
4013
4014 die_license_disabled() {
4015     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
4016 }
4017
4018 die_license_disabled_gpl() {
4019     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
4020 }
4021
4022 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
4023 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
4024
4025 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
4026 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
4027
4028 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4029
4030 if enabled nonfree; then
4031     license="nonfree and unredistributable"
4032 elif enabled gplv3; then
4033     license="GPL version 3 or later"
4034 elif enabled lgplv3; then
4035     license="LGPL version 3 or later"
4036 elif enabled gpl; then
4037     license="GPL version 2 or later"
4038 else
4039     license="LGPL version 2.1 or later"
4040 fi
4041
4042 enabled_all gnutls openssl &&
4043     die "GnuTLS and OpenSSL must not be enabled at the same time."
4044
4045 enabled_all gnutls mbedtls &&
4046     die "GnuTLS and mbedTLS must not be enabled at the same time."
4047
4048 enabled_all openssl mbedtls &&
4049     die "OpenSSL and mbedTLS must not be enabled at the same time."
4050
4051 # Disable all the library-specific components if the library itself
4052 # is disabled, see AVCODEC_LIST and following _LIST variables.
4053
4054 disable_components(){
4055     disabled ${1} && disable $(
4056         eval components="\$$(toupper ${1})_COMPONENTS"
4057         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
4058     )
4059 }
4060
4061 map 'disable_components $v' $LIBRARY_LIST
4062
4063 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
4064 set >> $logfile
4065
4066 test -n "$valgrind" && toolchain="valgrind-memcheck"
4067
4068 enabled ossfuzz && ! echo $CFLAGS | grep -q -- "-fsanitize="  && ! echo $CFLAGS | grep -q -- "-fcoverage-mapping" &&{
4069     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
4070     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
4071 }
4072
4073 case "$toolchain" in
4074     *-asan)
4075         cc_default="${toolchain%-asan}"
4076         add_cflags  -fsanitize=address
4077         add_ldflags -fsanitize=address
4078     ;;
4079     *-msan)
4080         cc_default="${toolchain%-msan}"
4081         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
4082         add_ldflags -fsanitize=memory
4083     ;;
4084     *-tsan)
4085         cc_default="${toolchain%-tsan}"
4086         add_cflags  -fsanitize=thread
4087         add_ldflags -fsanitize=thread
4088         case "$toolchain" in
4089             gcc-tsan)
4090                 add_cflags  -fPIC
4091                 add_ldflags -fPIC
4092                 ;;
4093         esac
4094     ;;
4095     *-usan)
4096         cc_default="${toolchain%-usan}"
4097         add_cflags  -fsanitize=undefined
4098         add_ldflags -fsanitize=undefined
4099     ;;
4100     valgrind-*)
4101         target_exec_default="valgrind"
4102         case "$toolchain" in
4103             valgrind-massif)
4104                 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"
4105                 ;;
4106             valgrind-memcheck)
4107                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
4108                 ;;
4109         esac
4110     ;;
4111     msvc)
4112         # Check whether the current MSVC version needs the C99 converter.
4113         # From MSVC 2013 (compiler major version 18) onwards, it does actually
4114         # support enough of C99 to build ffmpeg. Default to the new
4115         # behaviour if the regexp was unable to match anything, since this
4116         # successfully parses the version number of existing supported
4117         # versions that require the converter (MSVC 2010 and 2012).
4118         cl_major_ver=$(cl.exe 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
4119         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
4120             cc_default="cl.exe"
4121             cxx_default="cl.exe"
4122         else
4123             die "Unsupported MSVC version (2013 or newer required)"
4124         fi
4125         ld_default="$source_path/compat/windows/mslink"
4126         nm_default="dumpbin.exe -symbols"
4127         ar_default="lib.exe"
4128         case "$arch" in
4129         aarch64|arm64)
4130             as_default="armasm64.exe"
4131             ;;
4132         arm*)
4133             as_default="armasm.exe"
4134             ;;
4135         esac
4136         target_os_default="win32"
4137         # Use a relative path for TMPDIR. This makes sure all the
4138         # ffconf temp files are written with a relative path, avoiding
4139         # issues with msys/win32 path conversion for MSVC parameters
4140         # such as -Fo<file> or -out:<file>.
4141         TMPDIR=.
4142     ;;
4143     icl)
4144         cc_default="icl"
4145         ld_default="xilink"
4146         nm_default="dumpbin -symbols"
4147         ar_default="xilib"
4148         target_os_default="win32"
4149         TMPDIR=.
4150     ;;
4151     gcov)
4152         add_cflags  -fprofile-arcs -ftest-coverage
4153         add_ldflags -fprofile-arcs -ftest-coverage
4154     ;;
4155     llvm-cov)
4156         add_cflags -fprofile-arcs -ftest-coverage
4157         add_ldflags --coverage
4158     ;;
4159     hardened)
4160         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
4161         add_cflags   -fno-strict-overflow -fstack-protector-all
4162         add_ldflags  -Wl,-z,relro -Wl,-z,now
4163         add_cflags   -fPIE
4164         add_ldexeflags -fPIE -pie
4165     ;;
4166     ?*)
4167         die "Unknown toolchain $toolchain"
4168     ;;
4169 esac
4170
4171 if test -n "$cross_prefix"; then
4172     test -n "$arch" && test -n "$target_os" ||
4173         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
4174     enable cross_compile
4175 fi
4176
4177 set_default target_os
4178 if test "$target_os" = android; then
4179     cc_default="clang"
4180 fi
4181
4182 ar_default="${cross_prefix}${ar_default}"
4183 cc_default="${cross_prefix}${cc_default}"
4184 cxx_default="${cross_prefix}${cxx_default}"
4185 nm_default="${cross_prefix}${nm_default}"
4186 pkg_config_default="${cross_prefix}${pkg_config_default}"
4187 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
4188     ranlib_default="${cross_prefix}${ranlib_default} -D"
4189 else
4190     ranlib_default="${cross_prefix}${ranlib_default}"
4191 fi
4192 strip_default="${cross_prefix}${strip_default}"
4193 windres_default="${cross_prefix}${windres_default}"
4194
4195 sysinclude_default="${sysroot}/usr/include"
4196
4197 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
4198     target_exec x86asmexe nvcc
4199 enabled cross_compile || host_cc_default=$cc
4200 set_default host_cc
4201
4202 pkg_config_fail_message=""
4203 if ! $pkg_config --version >/dev/null 2>&1; then
4204     warn "$pkg_config not found, library detection may fail."
4205     pkg_config=false
4206 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
4207     pkg_config_fail_message="
4208 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
4209 fi
4210
4211 if test $doxygen != $doxygen_default && \
4212   ! $doxygen --version >/dev/null 2>&1; then
4213     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
4214 fi
4215
4216 exesuf() {
4217     case $1 in
4218         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
4219     esac
4220 }
4221
4222 EXESUF=$(exesuf $target_os)
4223 HOSTEXESUF=$(exesuf $host_os)
4224
4225 # set temporary file name
4226 : ${TMPDIR:=$TEMPDIR}
4227 : ${TMPDIR:=$TMP}
4228 : ${TMPDIR:=/tmp}
4229
4230 if [ -n "$tempprefix" ] ; then
4231     mktemp(){
4232         tmpname="$tempprefix.${HOSTNAME}.${UID}"
4233         echo "$tmpname"
4234         mkdir "$tmpname"
4235     }
4236 elif ! test_cmd mktemp -u XXXXXX; then
4237     # simple replacement for missing mktemp
4238     # NOT SAFE FOR GENERAL USE
4239     mktemp(){
4240         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
4241         echo "$tmpname"
4242         mkdir "$tmpname"
4243     }
4244 fi
4245
4246 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
4247     die "Unable to create temporary directory in $TMPDIR."
4248
4249 tmpfile(){
4250     tmp="${FFTMPDIR}/test"$2
4251     (set -C; exec > $tmp) 2> /dev/null ||
4252         die "Unable to create temporary file in $FFTMPDIR."
4253     eval $1=$tmp
4254 }
4255
4256 trap 'rm -rf -- "$FFTMPDIR"' EXIT
4257 trap 'exit 2' INT
4258
4259 tmpfile TMPASM .asm
4260 tmpfile TMPC   .c
4261 tmpfile TMPCPP .cpp
4262 tmpfile TMPE   $EXESUF
4263 tmpfile TMPH   .h
4264 tmpfile TMPM   .m
4265 tmpfile TMPCU  .cu
4266 tmpfile TMPO   .o
4267 tmpfile TMPS   .S
4268 tmpfile TMPSH  .sh
4269 tmpfile TMPV   .ver
4270
4271 unset -f mktemp
4272
4273 chmod +x $TMPE
4274
4275 # make sure we can execute files in $TMPDIR
4276 cat > $TMPSH 2>> $logfile <<EOF
4277 #! /bin/sh
4278 EOF
4279 chmod +x $TMPSH >> $logfile 2>&1
4280 if ! $TMPSH >> $logfile 2>&1; then
4281     cat <<EOF
4282 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
4283 variable to another directory and make sure that it is not mounted noexec.
4284 EOF
4285     die "Sanity test failed."
4286 fi
4287
4288 armasm_flags(){
4289     for flag; do
4290         case $flag in
4291             # Filter out MSVC cl.exe options from cflags that shouldn't
4292             # be passed to gas-preprocessor
4293             -M[TD]*)                                            ;;
4294             *)                  echo $flag                      ;;
4295         esac
4296    done
4297 }
4298
4299 cparser_flags(){
4300     for flag; do
4301         case $flag in
4302             -Wno-switch)             echo -Wno-switch-enum ;;
4303             -Wno-format-zero-length) ;;
4304             -Wdisabled-optimization) ;;
4305             -Wno-pointer-sign)       echo -Wno-other ;;
4306             *)                       echo $flag ;;
4307         esac
4308     done
4309 }
4310
4311 msvc_common_flags(){
4312     for flag; do
4313         case $flag in
4314             # In addition to specifying certain flags under the compiler
4315             # specific filters, they must be specified here as well or else the
4316             # generic catch all at the bottom will print the original flag.
4317             -Wall)                ;;
4318             -Wextra)              ;;
4319             -std=c99)             ;;
4320             # Common flags
4321             -fomit-frame-pointer) ;;
4322             -g)                   echo -Z7 ;;
4323             -fno-math-errno)      ;;
4324             -fno-common)          ;;
4325             -fno-signed-zeros)    ;;
4326             -fPIC)                ;;
4327             -mthumb)              ;;
4328             -march=*)             ;;
4329             -lz)                  echo zlib.lib ;;
4330             -lx264)               echo libx264.lib ;;
4331             -lstdc++)             ;;
4332             -l*)                  echo ${flag#-l}.lib ;;
4333             -LARGEADDRESSAWARE)   echo $flag ;;
4334             -L*)                  echo -libpath:${flag#-L} ;;
4335             *)                    echo $flag ;;
4336         esac
4337     done
4338 }
4339
4340 msvc_flags(){
4341     msvc_common_flags "$@"
4342     for flag; do
4343         case $flag in
4344             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4345                                        -wd4554 ;;
4346             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4347                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4348                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4349                                        -wd4307 \
4350                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4351         esac
4352     done
4353 }
4354
4355 icl_flags(){
4356     msvc_common_flags "$@"
4357     for flag; do
4358         case $flag in
4359             # Despite what Intel's documentation says -Wall, which is supported
4360             # on Windows, does enable remarks so disable them here.
4361             -Wall)                echo $flag -Qdiag-disable:remark ;;
4362             -std=c99)             echo -Qstd=c99 ;;
4363             -flto)                echo -ipo ;;
4364         esac
4365     done
4366 }
4367
4368 icc_flags(){
4369     for flag; do
4370         case $flag in
4371             -flto)                echo -ipo ;;
4372             *)                    echo $flag ;;
4373         esac
4374     done
4375 }
4376
4377 suncc_flags(){
4378     for flag; do
4379         case $flag in
4380             -march=*|-mcpu=*)
4381                 case "${flag#*=}" in
4382                     native)                   echo -xtarget=native       ;;
4383                     v9|niagara)               echo -xarch=sparc          ;;
4384                     ultrasparc)               echo -xarch=sparcvis       ;;
4385                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4386                     i586|pentium)             echo -xchip=pentium        ;;
4387                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4388                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4389                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4390                     pentium4*)          echo -xtarget=pentium4           ;;
4391                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4392                     *-sse3)             echo -xarch=sse3                 ;;
4393                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4394                     bonnell)                   echo -xarch=ssse3         ;;
4395                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4396                     westmere)                  echo -xtarget=westmere    ;;
4397                     silvermont)                echo -xarch=sse4_2        ;;
4398                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4399                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4400                                                echo -xarch=avx           ;;
4401                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4402                     btver1)                    echo -xarch=amdsse4a      ;;
4403                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4404                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4405                     k8|opteron|athlon64|athlon-fx)
4406                                                echo -xarch=sse2a         ;;
4407                     athlon*)                   echo -xarch=pentium_proa  ;;
4408                 esac
4409                 ;;
4410             -std=c99)             echo -xc99              ;;
4411             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4412             -fPIC)                echo -KPIC -xcode=pic32 ;;
4413             -W*,*)                echo $flag              ;;
4414             -f*-*|-W*|-mimpure-text)                      ;;
4415             -shared)              echo -G                 ;;
4416             *)                    echo $flag              ;;
4417         esac
4418     done
4419 }
4420
4421 probe_cc(){
4422     pfx=$1
4423     _cc=$2
4424     first=$3
4425
4426     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4427     unset _ld_o _ldflags _ld_lib _ld_path
4428     unset _depflags _DEPCMD _DEPFLAGS
4429     _flags_filter=echo
4430
4431     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4432         true # no-op to avoid reading stdin in following checks
4433     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4434         _type=llvm_gcc
4435         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4436         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4437         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4438         _cflags_speed='-O3'
4439         _cflags_size='-Os'
4440     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4441         _type=gcc
4442         gcc_version=$($_cc --version | head -n1)
4443         gcc_basever=$($_cc -dumpversion)
4444         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4445         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4446         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4447         case $gcc_basever in
4448             2) ;;
4449             2.*) ;;
4450             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4451         esac
4452         if [ "$first" = true ]; then
4453             case $gcc_basever in
4454                 4.2*)
4455                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4456             esac
4457         fi
4458         _cflags_speed='-O3'
4459         _cflags_size='-Os'
4460     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4461         _type=icc
4462         _ident=$($_cc --version | head -n1)
4463         _depflags='-MMD'
4464         _cflags_speed='-O3'
4465         _cflags_size='-Os'
4466         _cflags_noopt='-O1'
4467         _flags_filter=icc_flags
4468     elif $_cc -v 2>&1 | grep -q xlc; then
4469         _type=xlc
4470         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4471         _cflags_speed='-O5'
4472         _cflags_size='-O5 -qcompact'
4473     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4474         test -d "$sysroot" || die "No valid sysroot specified."
4475         _type=armcc
4476         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4477         armcc_conf="$PWD/armcc.conf"
4478         $_cc --arm_linux_configure                 \
4479              --arm_linux_config_file="$armcc_conf" \
4480              --configure_sysroot="$sysroot"        \
4481              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4482              die "Error creating armcc configuration file."
4483         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4484         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4485         as_default="${cross_prefix}gcc"
4486         _depflags='-MMD'
4487         _cflags_speed='-O3'
4488         _cflags_size='-Os'
4489     elif $_cc -v 2>&1 | grep -q clang && ! $_cc -? > /dev/null 2>&1; then
4490         _type=clang
4491         _ident=$($_cc --version 2>/dev/null | head -n1)
4492         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4493         _cflags_speed='-O3'
4494         _cflags_size='-Oz'
4495     elif $_cc -V 2>&1 | grep -q Sun; then
4496         _type=suncc
4497         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4498         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4499         _DEPFLAGS='-xM1 -xc99'
4500         _ldflags='-std=c99'
4501         _cflags_speed='-O5'
4502         _cflags_size='-O5 -xspace'
4503         _flags_filter=suncc_flags
4504     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4505         _type=pathscale
4506         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4507         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4508         _cflags_speed='-O2'
4509         _cflags_size='-Os'
4510         _flags_filter='filter_out -Wdisabled-optimization'
4511     elif $_cc -v 2>&1 | grep -q Open64; then
4512         _type=open64
4513         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4514         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4515         _cflags_speed='-O2'
4516         _cflags_size='-Os'
4517         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4518     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4519         _type=armasm
4520         _ident=$($_cc | head -n1)
4521         # 4509: "This form of conditional instruction is deprecated"
4522         _flags="-nologo -ignore 4509"
4523         _flags_filter=armasm_flags
4524     elif $_cc 2>&1 | grep -q Intel; then
4525         _type=icl
4526         _ident=$($_cc 2>&1 | head -n1)
4527         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4528         # Not only is O3 broken on 13.x+ but it is slower on all previous
4529         # versions (tested) as well.
4530         _cflags_speed="-O2"
4531         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4532         if $_cc 2>&1 | grep -q Linker; then
4533             _ld_o='-out:$@'
4534         else
4535             _ld_o='-Fe$@'
4536         fi
4537         _cc_o='-Fo$@'
4538         _cc_e='-P'
4539         _flags_filter=icl_flags
4540         _ld_lib='lib%.a'
4541         _ld_path='-libpath:'
4542         # -Qdiag-error to make icl error when seeing certain unknown arguments
4543         _flags='-nologo -Qdiag-error:4044,10157'
4544         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4545         # with MSVC which enables it by default.
4546         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4547         disable stripping
4548     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4549         # lld can emulate multiple different linkers; in ms link.exe mode,
4550         # the -? parameter gives the help output which contains an identifyable
4551         # string, while it gives an error in other modes.
4552         _type=lld-link
4553         # The link.exe mode doesn't have a switch for getting the version,
4554         # but we can force it back to gnu mode and get the version from there.
4555         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4556         _ld_o='-out:$@'
4557         _flags_filter=msvc_flags
4558         _ld_lib='lib%.a'
4559         _ld_path='-libpath:'
4560     elif $_cc -nologo- 2>&1 | grep -q Microsoft || { $_cc -v 2>&1 | grep -q clang && $_cc -? > /dev/null 2>&1; }; then
4561         _type=msvc
4562         _ident=$($_cc 2>&1 | head -n1 | tr -d '\r')
4563         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4564         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4565         _cflags_speed="-O2"
4566         _cflags_size="-O1"
4567         _cflags_noopt="-O1"
4568         if $_cc -nologo- 2>&1 | grep -q Linker; then
4569             _ld_o='-out:$@'
4570         else
4571             _ld_o='-Fe$@'
4572         fi
4573         _cc_o='-Fo$@'
4574         _cc_e='-P -Fi$@'
4575         _flags_filter=msvc_flags
4576         _ld_lib='lib%.a'
4577         _ld_path='-libpath:'
4578         _flags='-nologo'
4579         disable stripping
4580     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4581         _type=cparser
4582         _ident=$($_cc --version | head -n1)
4583         _depflags='-MMD'
4584         _cflags_speed='-O4'
4585         _cflags_size='-O2'
4586         _flags_filter=cparser_flags
4587     fi
4588
4589     eval ${pfx}_type=\$_type
4590     eval ${pfx}_ident=\$_ident
4591 }
4592
4593 set_ccvars(){
4594     eval ${1}_C=\${_cc_c-\${${1}_C}}
4595     eval ${1}_E=\${_cc_e-\${${1}_E}}
4596     eval ${1}_O=\${_cc_o-\${${1}_O}}
4597
4598     if [ -n "$_depflags" ]; then
4599         eval ${1}_DEPFLAGS=\$_depflags
4600     else
4601         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4602         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4603         eval DEP${1}FLAGS=\$_flags
4604     fi
4605 }
4606
4607 probe_cc cc "$cc" "true"
4608 cflags_filter=$_flags_filter
4609 cflags_speed=$_cflags_speed
4610 cflags_size=$_cflags_size
4611 cflags_noopt=$_cflags_noopt
4612 add_cflags $_flags $_cflags
4613 cc_ldflags=$_ldflags
4614 set_ccvars CC
4615 set_ccvars CXX
4616
4617 probe_cc hostcc "$host_cc"
4618 host_cflags_filter=$_flags_filter
4619 host_cflags_speed=$_cflags_speed
4620 add_host_cflags  $_flags $_cflags
4621 set_ccvars HOSTCC
4622
4623 test -n "$cc_type" && enable $cc_type ||
4624     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4625
4626 : ${as_default:=$cc}
4627 : ${objcc_default:=$cc}
4628 : ${dep_cc_default:=$cc}
4629 : ${ld_default:=$cc}
4630 : ${host_ld_default:=$host_cc}
4631 set_default ar as objcc dep_cc ld ln_s host_ld windres
4632
4633 probe_cc as "$as"
4634 asflags_filter=$_flags_filter
4635 add_asflags $_flags $_cflags
4636 set_ccvars AS
4637
4638 probe_cc objcc "$objcc"
4639 objcflags_filter=$_flags_filter
4640 add_objcflags $_flags $_cflags
4641 set_ccvars OBJC
4642
4643 probe_cc ld "$ld"
4644 ldflags_filter=$_flags_filter
4645 add_ldflags $_flags $_ldflags
4646 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4647 LD_O=${_ld_o-$LD_O}
4648 LD_LIB=${_ld_lib-$LD_LIB}
4649 LD_PATH=${_ld_path-$LD_PATH}
4650
4651 probe_cc hostld "$host_ld"
4652 host_ldflags_filter=$_flags_filter
4653 add_host_ldflags $_flags $_ldflags
4654 HOSTLD_O=${_ld_o-$HOSTLD_O}
4655
4656 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4657     probe_cc depcc "$dep_cc"
4658     CCDEP=${_DEPCMD:-$DEPCMD}
4659     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4660     DEPCCFLAGS=$_flags
4661 fi
4662
4663 if $ar 2>&1 | grep -q Microsoft; then
4664     arflags="-nologo"
4665     ar_o='-out:$@'
4666 elif $ar 2>&1 | grep -q "\[D\] "; then
4667     arflags="rcD"
4668     ar_o='$@'
4669 else
4670     arflags="rc"
4671     ar_o='$@'
4672 fi
4673
4674 add_cflags $extra_cflags
4675 add_cxxflags $extra_cxxflags
4676 add_objcflags $extra_objcflags
4677 add_asflags $extra_cflags
4678
4679 if test -n "$sysroot"; then
4680     case "$cc_type" in
4681         gcc|llvm_gcc|clang)
4682             add_cppflags --sysroot="$sysroot"
4683             add_ldflags --sysroot="$sysroot"
4684         ;;
4685     esac
4686 fi
4687
4688 if test "$cpu" = host; then
4689     enabled cross_compile &&
4690         die "--cpu=host makes no sense when cross-compiling."
4691
4692     case "$cc_type" in
4693         gcc|llvm_gcc)
4694             check_native(){
4695                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4696                 sed -n "/cc1.*$1=/{
4697                             s/.*$1=\\([^ ]*\\).*/\\1/
4698                             p
4699                             q
4700                         }" $TMPE
4701             }
4702             cpu=$(check_native -march || check_native -mcpu)
4703         ;;
4704         clang)
4705             check_native(){
4706                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4707                 sed -n "/cc1.*-target-cpu /{
4708                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4709                             p
4710                             q
4711                         }" $TMPE
4712             }
4713             cpu=$(check_native -march)
4714         ;;
4715     esac
4716
4717     test "${cpu:-host}" = host &&
4718         die "--cpu=host not supported with compiler $cc"
4719 fi
4720
4721 # Deal with common $arch aliases
4722 case "$arch" in
4723     aarch64|arm64)
4724         arch="aarch64"
4725     ;;
4726     arm*|iPad*|iPhone*)
4727         arch="arm"
4728     ;;
4729     mips*|IP*)
4730         case "$arch" in
4731         *el)
4732             add_cppflags -EL
4733             add_ldflags -EL
4734         ;;
4735         *eb)
4736             add_cppflags -EB
4737             add_ldflags -EB
4738         ;;
4739         esac
4740         arch="mips"
4741     ;;
4742     parisc*|hppa*)
4743         arch="parisc"
4744     ;;
4745     "Power Macintosh"|ppc*|powerpc*)
4746         arch="ppc"
4747     ;;
4748     s390|s390x)
4749         arch="s390"
4750     ;;
4751     sh4|sh)
4752         arch="sh4"
4753     ;;
4754     sun4*|sparc*)
4755         arch="sparc"
4756     ;;
4757     tilegx|tile-gx)
4758         arch="tilegx"
4759     ;;
4760     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4761         arch="x86"
4762     ;;
4763 esac
4764
4765 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4766 enable $arch
4767
4768 # Add processor-specific flags
4769 if enabled aarch64; then
4770
4771     case $cpu in
4772         armv*)
4773             cpuflags="-march=$cpu"
4774         ;;
4775         *)
4776             cpuflags="-mcpu=$cpu"
4777         ;;
4778     esac
4779
4780 elif enabled alpha; then
4781
4782     cpuflags="-mcpu=$cpu"
4783
4784 elif enabled arm; then
4785
4786     check_arm_arch() {
4787         test_cpp_condition stddef.h \
4788             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4789             $cpuflags
4790     }
4791
4792     probe_arm_arch() {
4793         if   check_arm_arch 4;        then echo armv4
4794         elif check_arm_arch 4T;       then echo armv4t
4795         elif check_arm_arch 5;        then echo armv5
4796         elif check_arm_arch 5E;       then echo armv5e
4797         elif check_arm_arch 5T;       then echo armv5t
4798         elif check_arm_arch 5TE;      then echo armv5te
4799         elif check_arm_arch 5TEJ;     then echo armv5te
4800         elif check_arm_arch 6;        then echo armv6
4801         elif check_arm_arch 6J;       then echo armv6j
4802         elif check_arm_arch 6K;       then echo armv6k
4803         elif check_arm_arch 6Z;       then echo armv6z
4804         elif check_arm_arch 6KZ;      then echo armv6zk
4805         elif check_arm_arch 6ZK;      then echo armv6zk
4806         elif check_arm_arch 6T2;      then echo armv6t2
4807         elif check_arm_arch 7;        then echo armv7
4808         elif check_arm_arch 7A  7_A;  then echo armv7-a
4809         elif check_arm_arch 7S;       then echo armv7-a
4810         elif check_arm_arch 7R  7_R;  then echo armv7-r
4811         elif check_arm_arch 7M  7_M;  then echo armv7-m
4812         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4813         elif check_arm_arch 8A  8_A;  then echo armv8-a
4814         fi
4815     }
4816
4817     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4818
4819     case $cpu in
4820         armv*)
4821             cpuflags="-march=$cpu"
4822             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4823         ;;
4824         *)
4825             cpuflags="-mcpu=$cpu"
4826             case $cpu in
4827                 cortex-a*)                               subarch=armv7a  ;;
4828                 cortex-r*)                               subarch=armv7r  ;;
4829                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4830                 arm11*)                                  subarch=armv6   ;;
4831                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4832                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4833                 *)                             subarch=$(probe_arm_arch) ;;
4834             esac
4835         ;;
4836     esac
4837
4838     case "$subarch" in
4839         armv5t*)    enable fast_clz                ;;
4840         armv[6-8]*)
4841             enable fast_clz
4842             disabled fast_unaligned || enable fast_unaligned
4843             ;;
4844     esac
4845
4846 elif enabled avr32; then
4847
4848     case $cpu in
4849         ap7[02]0[0-2])
4850             subarch="avr32_ap"
4851             cpuflags="-mpart=$cpu"
4852         ;;
4853         ap)
4854             subarch="avr32_ap"
4855             cpuflags="-march=$cpu"
4856         ;;
4857         uc3[ab]*)
4858             subarch="avr32_uc"
4859             cpuflags="-mcpu=$cpu"
4860         ;;
4861         uc)
4862             subarch="avr32_uc"
4863             cpuflags="-march=$cpu"
4864         ;;
4865     esac
4866
4867 elif enabled bfin; then
4868
4869     cpuflags="-mcpu=$cpu"
4870
4871 elif enabled mips; then
4872
4873     cpuflags="-march=$cpu"
4874
4875     if [ "$cpu" != "generic" ]; then
4876         disable mips32r2
4877         disable mips32r5
4878         disable mips64r2
4879         disable mips32r6
4880         disable mips64r6
4881         disable loongson2
4882         disable loongson3
4883
4884         case $cpu in
4885             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4886                 enable mips32r2
4887                 disable msa
4888             ;;
4889             p5600|i6400|p6600)
4890                 disable mipsdsp
4891                 disable mipsdspr2
4892             ;;
4893             loongson*)
4894                 enable loongson2
4895                 enable loongson3
4896                 enable local_aligned
4897                 enable simd_align_16
4898                 enable fast_64bit
4899                 enable fast_clz
4900                 enable fast_cmov
4901                 enable fast_unaligned
4902                 disable aligned_stack
4903                 disable mipsdsp
4904                 disable mipsdspr2
4905                 # When gcc version less than 5.3.0, add -fno-expensive-optimizations flag.
4906                 if [ $cc == gcc ]; then
4907                     gcc_version=$(gcc -dumpversion)
4908                     if [ "$(echo "$gcc_version 5.3.0" | tr " " "\n" | sort -rV | head -n 1)" == "$gcc_version" ]; then
4909                         expensive_optimization_flag=""
4910                     else
4911                         expensive_optimization_flag="-fno-expensive-optimizations"
4912                     fi
4913                 fi
4914                 case $cpu in
4915                     loongson3*)
4916                         cpuflags="-march=loongson3a -mhard-float $expensive_optimization_flag"
4917                     ;;
4918                     loongson2e)
4919                         cpuflags="-march=loongson2e -mhard-float $expensive_optimization_flag"
4920                     ;;
4921                     loongson2f)
4922                         cpuflags="-march=loongson2f -mhard-float $expensive_optimization_flag"
4923                     ;;
4924                 esac
4925             ;;
4926             *)
4927                 # Unknown CPU. Disable everything.
4928                 warn "unknown CPU. Disabling all MIPS optimizations."
4929                 disable mipsfpu
4930                 disable mipsdsp
4931                 disable mipsdspr2
4932                 disable msa
4933                 disable mmi
4934             ;;
4935         esac
4936
4937         case $cpu in
4938             24kc)
4939                 disable mipsfpu
4940                 disable mipsdsp
4941                 disable mipsdspr2
4942             ;;
4943             24kf*)
4944                 disable mipsdsp
4945                 disable mipsdspr2
4946             ;;
4947             24kec|34kc|1004kc)
4948                 disable mipsfpu
4949                 disable mipsdspr2
4950             ;;
4951             24kef*|34kf*|1004kf*)
4952                 disable mipsdspr2
4953             ;;
4954             74kc)
4955                 disable mipsfpu
4956             ;;
4957             p5600)
4958                 enable mips32r5
4959                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4960             ;;
4961             i6400)
4962                 enable mips64r6
4963                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4964             ;;
4965             p6600)
4966                 enable mips64r6
4967                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4968             ;;
4969         esac
4970     else
4971         # We do not disable anything. Is up to the user to disable the unwanted features.
4972         warn 'generic cpu selected'
4973     fi
4974
4975 elif enabled ppc; then
4976
4977     disable ldbrx
4978
4979     case $(tolower $cpu) in
4980         601|ppc601|powerpc601)
4981             cpuflags="-mcpu=601"
4982             disable altivec
4983         ;;
4984         603*|ppc603*|powerpc603*)
4985             cpuflags="-mcpu=603"
4986             disable altivec
4987         ;;
4988         604*|ppc604*|powerpc604*)
4989             cpuflags="-mcpu=604"
4990             disable altivec
4991         ;;
4992         g3|75*|ppc75*|powerpc75*)
4993             cpuflags="-mcpu=750"
4994             disable altivec
4995         ;;
4996         g4|745*|ppc745*|powerpc745*)
4997             cpuflags="-mcpu=7450"
4998             disable vsx
4999         ;;
5000         74*|ppc74*|powerpc74*)
5001             cpuflags="-mcpu=7400"
5002             disable vsx
5003         ;;
5004         g5|970|ppc970|powerpc970)
5005             cpuflags="-mcpu=970"
5006             disable vsx
5007         ;;
5008         power[3-6]*)
5009             cpuflags="-mcpu=$cpu"
5010             disable vsx
5011         ;;
5012         power[7-8]*)
5013             cpuflags="-mcpu=$cpu"
5014         ;;
5015         cell)
5016             cpuflags="-mcpu=cell"
5017             enable ldbrx
5018             disable vsx
5019         ;;
5020         e500mc)
5021             cpuflags="-mcpu=e500mc"
5022             disable altivec
5023         ;;
5024         e500v2)
5025             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
5026             disable altivec
5027             disable dcbzl
5028         ;;
5029         e500)
5030             cpuflags="-mcpu=8540 -mhard-float"
5031             disable altivec
5032             disable dcbzl
5033         ;;
5034     esac
5035
5036 elif enabled sparc; then
5037
5038     case $cpu in
5039         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
5040             cpuflags="-mcpu=$cpu"
5041         ;;
5042         ultrasparc*|niagara[234])
5043             cpuflags="-mcpu=$cpu"
5044         ;;
5045     esac
5046
5047 elif enabled x86; then
5048
5049     case $cpu in
5050         i[345]86|pentium)
5051             cpuflags="-march=$cpu"
5052             disable i686
5053             disable mmx
5054         ;;
5055         # targets that do NOT support nopl and conditional mov (cmov)
5056         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
5057             cpuflags="-march=$cpu"
5058             disable i686
5059         ;;
5060         # targets that do support nopl and conditional mov (cmov)
5061         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
5062         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
5063         |amdfam10|barcelona|b[dt]ver*|znver*)
5064             cpuflags="-march=$cpu"
5065             enable i686
5066             enable fast_cmov
5067         ;;
5068         # targets that do support conditional mov but on which it's slow
5069         pentium4|pentium4m|prescott|nocona)
5070             cpuflags="-march=$cpu"
5071             enable i686
5072             disable fast_cmov
5073         ;;
5074     esac
5075
5076 fi
5077
5078 if [ "$cpu" != generic ]; then
5079     add_cflags  $cpuflags
5080     add_asflags $cpuflags
5081     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
5082 fi
5083
5084 # compiler sanity check
5085 test_exec <<EOF
5086 int main(void){ return 0; }
5087 EOF
5088 if test "$?" != 0; then
5089     echo "$cc is unable to create an executable file."
5090     if test -z "$cross_prefix" && ! enabled cross_compile ; then
5091         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
5092         echo "Only do this if you know what cross compiling means."
5093     fi
5094     die "C compiler test failed."
5095 fi
5096
5097 add_cppflags -D_ISOC99_SOURCE
5098 add_cxxflags -D__STDC_CONSTANT_MACROS
5099 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
5100
5101 # some compilers silently accept -std=c11, so we also need to check that the
5102 # version macro is defined properly
5103 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
5104     add_cflags -std=c11 ||
5105     check_cflags -std=c99
5106
5107 check_cppflags -D_FILE_OFFSET_BITS=64
5108 check_cppflags -D_LARGEFILE_SOURCE
5109
5110 add_host_cppflags -D_ISOC99_SOURCE
5111 check_host_cflags -std=c99
5112 check_host_cflags -Wall
5113 check_host_cflags $host_cflags_speed
5114
5115 check_64bit(){
5116     arch32=$1
5117     arch64=$2
5118     expr=${3:-'sizeof(void *) > 4'}
5119     test_code cc "" "int test[2*($expr) - 1]" &&
5120         subarch=$arch64 || subarch=$arch32
5121     enable $subarch
5122 }
5123
5124 case "$arch" in
5125     aarch64|alpha|ia64)
5126         enabled shared && enable_weak pic
5127     ;;
5128     mips)
5129         check_64bit mips mips64 '_MIPS_SIM > 1'
5130         enabled shared && enable_weak pic
5131     ;;
5132     parisc)
5133         check_64bit parisc parisc64
5134         enabled shared && enable_weak pic
5135     ;;
5136     ppc)
5137         check_64bit ppc ppc64
5138         enabled shared && enable_weak pic
5139     ;;
5140     s390)
5141         check_64bit s390 s390x
5142         enabled shared && enable_weak pic
5143     ;;
5144     sparc)
5145         check_64bit sparc sparc64
5146         enabled shared && enable_weak pic
5147     ;;
5148     x86)
5149         check_64bit x86_32 x86_64
5150         # Treat x32 as x64 for now. Note it also needs pic if shared
5151         test "$subarch" = "x86_32" && test_cpp_condition stddef.h 'defined(__x86_64__)' &&
5152             subarch=x86_64 && enable x86_64 && disable x86_32
5153         if enabled x86_64; then
5154             enabled shared && enable_weak pic
5155             objformat=elf64
5156         fi
5157     ;;
5158 esac
5159
5160 # OS specific
5161 case $target_os in
5162     aix)
5163         SHFLAGS=-shared
5164         add_cppflags '-I\$(SRC_PATH)/compat/aix'
5165         enabled shared && add_ldflags -Wl,-brtl
5166         arflags='-Xany -r -c'
5167         striptype=""
5168         ;;
5169     android)
5170         disable symver
5171         enable section_data_rel_ro
5172         add_cflags -fPIE
5173         add_ldexeflags -fPIE -pie
5174         SLIB_INSTALL_NAME='$(SLIBNAME)'
5175         SLIB_INSTALL_LINKS=
5176         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
5177         ;;
5178     haiku)
5179         prefix_default="/boot/common"
5180         network_extralibs="-lnetwork"
5181         host_extralibs=
5182         ;;
5183     sunos)
5184         SHFLAGS='-shared -Wl,-h,$$(@F)'
5185         enabled x86 && append SHFLAGS -mimpure-text
5186         network_extralibs="-lsocket -lnsl"
5187         add_cppflags -D__EXTENSIONS__
5188         # When using suncc to build, the Solaris linker will mark
5189         # an executable with each instruction set encountered by
5190         # the Solaris assembler.  As our libraries contain their own
5191         # guards for processor-specific code, instead suppress
5192         # generation of the HWCAPS ELF section on Solaris x86 only.
5193         enabled_all suncc x86 &&
5194             echo "hwcap_1 = OVERRIDE;" > mapfile &&
5195             add_ldflags -Wl,-M,mapfile
5196         nm_default='nm -P -g'
5197         striptype=""
5198         version_script='-M'
5199         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
5200         ;;
5201     netbsd)
5202         disable symver
5203         oss_indev_extralibs="-lossaudio"
5204         oss_outdev_extralibs="-lossaudio"
5205         enabled gcc || check_ldflags -Wl,-zmuldefs
5206         ;;
5207     openbsd|bitrig)
5208         disable symver
5209         striptype=""
5210         SHFLAGS='-shared'
5211         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
5212         SLIB_INSTALL_LINKS=
5213         oss_indev_extralibs="-lossaudio"
5214         oss_outdev_extralibs="-lossaudio"
5215         ;;
5216     dragonfly)
5217         disable symver
5218         ;;
5219     freebsd)
5220         ;;
5221     bsd/os)
5222         add_extralibs -lpoll -lgnugetopt
5223         strip="strip -d"
5224         ;;
5225     darwin)
5226         enabled ppc && add_asflags -force_cpusubtype_ALL
5227         install_name_dir_default='$(SHLIBDIR)'
5228         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
5229         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
5230         strip="${strip} -x"
5231         add_ldflags -Wl,-dynamic,-search_paths_first
5232         check_cflags -Werror=partial-availability
5233         SLIBSUF=".dylib"
5234         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
5235         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
5236         enabled x86_64 && objformat="macho64" || objformat="macho32"
5237         enabled_any pic shared x86_64 ||
5238             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
5239         check_headers dispatch/dispatch.h &&
5240             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
5241         if test -n "$sysroot"; then
5242             is_in -isysroot $cc $CPPFLAGS $CFLAGS || check_cppflags -isysroot $sysroot
5243             is_in -isysroot $ld $LDFLAGS          || check_ldflags  -isysroot $sysroot
5244         fi
5245         version_script='-exported_symbols_list'
5246         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
5247         ;;
5248     msys*)
5249         die "Native MSYS builds are discouraged, please use the MINGW environment."
5250         ;;
5251     mingw32*|mingw64*)
5252         target_os=mingw32
5253         LIBTARGET=i386
5254         if enabled x86_64; then
5255             LIBTARGET="i386:x86-64"
5256         elif enabled arm; then
5257             LIBTARGET="arm"
5258         elif enabled aarch64; then
5259             LIBTARGET="arm64"
5260         fi
5261         if enabled shared; then
5262             # Cannot build both shared and static libs when using dllimport.
5263             disable static
5264         fi
5265         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5266         enabled x86_32 && check_ldflags -Wl,--large-address-aware
5267         shlibdir_default="$bindir_default"
5268         SLIBPREF=""
5269         SLIBSUF=".dll"
5270         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5271         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5272         if test_cmd lib.exe -list; then
5273             SLIB_EXTRA_CMD=-'lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5274             if enabled x86_64; then
5275                 LIBTARGET=x64
5276             fi
5277         else
5278             SLIB_EXTRA_CMD=-'$(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
5279         fi
5280         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5281         SLIB_INSTALL_LINKS=
5282         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5283         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5284         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" AR="$(AR_CMD)" NM="$(NM_CMD)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5285         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--disable-auto-image-base $$(@:$(SLIBSUF)=.def)'
5286         enabled x86_64 && objformat="win64" || objformat="win32"
5287         dlltool="${cross_prefix}dlltool"
5288         ranlib=:
5289         enable dos_paths
5290         check_ldflags -Wl,--nxcompat,--dynamicbase
5291         # Lets work around some stupidity in binutils.
5292         # ld will strip relocations from executables even though we need them
5293         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
5294         # however ld then forgets what the entry point should be (oops) so we
5295         # have to manually (re)set it.
5296         if enabled x86_32; then
5297             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
5298         elif enabled x86_64; then
5299             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
5300             check_ldflags -Wl,--high-entropy-va # binutils 2.25
5301             # Set image base >4GB for extra entropy with HEASLR
5302             add_ldexeflags -Wl,--image-base,0x140000000
5303             append SHFLAGS -Wl,--image-base,0x180000000
5304         fi
5305         ;;
5306     win32|win64)
5307         disable symver
5308         if enabled shared; then
5309             # Link to the import library instead of the normal static library
5310             # for shared libs.
5311             LD_LIB='%.lib'
5312             # Cannot build both shared and static libs with MSVC or icl.
5313             disable static
5314         fi
5315         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
5316         shlibdir_default="$bindir_default"
5317         SLIBPREF=""
5318         SLIBSUF=".dll"
5319         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5320         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5321         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5322         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5323         SLIB_INSTALL_LINKS=
5324         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5325         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5326         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5327         enabled x86_64 && objformat="win64" || objformat="win32"
5328         ranlib=:
5329         enable dos_paths
5330         ;;
5331     cygwin*)
5332         target_os=cygwin
5333         shlibdir_default="$bindir_default"
5334         SLIBPREF="cyg"
5335         SLIBSUF=".dll"
5336         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5337         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5338         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5339         SLIB_INSTALL_LINKS=
5340         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
5341         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
5342         enabled x86_64 && objformat="win64" || objformat="win32"
5343         enable dos_paths
5344         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5345         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5346         ;;
5347     *-dos|freedos|opendos)
5348         network_extralibs="-lsocket"
5349         objformat="coff"
5350         enable dos_paths
5351         ;;
5352     linux)
5353         enable section_data_rel_ro
5354         enabled_any arm aarch64 && enable_weak linux_perf
5355         ;;
5356     irix*)
5357         target_os=irix
5358         ranlib="echo ignoring ranlib"
5359         ;;
5360     os/2*)
5361         strip="lxlite -CS"
5362         striptype=""
5363         objformat="aout"
5364         add_cppflags -D_GNU_SOURCE
5365         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
5366         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
5367         LIBSUF="_s.a"
5368         SLIBPREF=""
5369         SLIBSUF=".dll"
5370         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5371         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
5372         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
5373             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
5374             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
5375             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
5376             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
5377         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
5378             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
5379         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5380         SLIB_INSTALL_LINKS=
5381         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
5382         enable dos_paths
5383         enable_weak os2threads
5384         ;;
5385     gnu/kfreebsd)
5386         add_cppflags -D_BSD_SOURCE
5387         ;;
5388     gnu)
5389         ;;
5390     qnx)
5391         add_cppflags -D_QNX_SOURCE
5392         network_extralibs="-lsocket"
5393         ;;
5394     symbian)
5395         SLIBSUF=".dll"
5396         enable dos_paths
5397         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
5398         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
5399         add_ldflags -Wl,--target1-abs,--no-undefined \
5400                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
5401                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
5402         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
5403                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
5404                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
5405         ;;
5406     minix)
5407         ;;
5408     none)
5409         ;;
5410     *)
5411         die "Unknown OS '$target_os'."
5412         ;;
5413 esac
5414
5415 # test if creating links works
5416 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5417 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5418 mkdir "$link_dest"
5419 $ln_s "$link_dest" "$link_name"
5420 touch "$link_dest/test_file"
5421 if [ "$source_path" != "." ] && [ "$source_path" != "src" ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5422     # create link to source path
5423     [ -e src ] && rm src
5424     $ln_s "$source_path" src
5425     source_link=src
5426 else
5427     # creating directory links doesn't work
5428     # fall back to using the full source path
5429     source_link="$source_path"
5430 fi
5431 # cleanup
5432 rm -r "$link_dest"
5433 rm -r "$link_name"
5434
5435 # determine libc flavour
5436
5437 probe_libc(){
5438     pfx=$1
5439     pfx_no_=${pfx%_}
5440     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5441     if test_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5442         eval ${pfx}libc_type=uclibc
5443         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5444     elif test_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5445         eval ${pfx}libc_type=glibc
5446         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5447     # MinGW headers can be installed on Cygwin, so check for newlib first.
5448     elif test_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5449         eval ${pfx}libc_type=newlib
5450         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
5451     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5452     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5453         eval ${pfx}libc_type=mingw64
5454         if test_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5455             add_compat msvcrt/snprintf.o
5456             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5457         fi
5458         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5459         eval test \$${pfx_no_}cc_type = "gcc" &&
5460             add_${pfx}cppflags -D__printf__=__gnu_printf__
5461         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5462             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5463         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5464     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5465          test_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5466         eval ${pfx}libc_type=mingw32
5467         test_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5468             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5469             die "ERROR: MinGW32 runtime version must be >= 3.15."
5470         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5471         test_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
5472             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5473         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5474             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5475         eval test \$${pfx_no_}cc_type = "gcc" &&
5476             add_${pfx}cppflags -D__printf__=__gnu_printf__
5477         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5478     elif test_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5479         eval ${pfx}libc_type=msvcrt
5480         if test_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5481             if [ "$pfx" = host_ ]; then
5482                 add_host_cppflags -Dsnprintf=_snprintf
5483             else
5484                 add_compat strtod.o strtod=avpriv_strtod
5485                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5486                                              _snprintf=avpriv_snprintf  \
5487                                              vsnprintf=avpriv_vsnprintf
5488             fi
5489         fi
5490         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5491         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5492         # 0x601 by default unless something else is set by the user.
5493         # This can easily lead to us detecting functions only present
5494         # in such new versions and producing binaries requiring windows 7.0.
5495         # Therefore explicitly set the default to Vista unless the user has
5496         # set something else on the command line.
5497         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5498         # family. For these cases, configure is free to use any functions
5499         # found in the SDK headers by default. (Alternatively, we could force
5500         # _WIN32_WINNT to 0x0602 in that case.)
5501         test_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5502             { test_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0600; }
5503 #ifdef WINAPI_FAMILY
5504 #include <winapifamily.h>
5505 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5506 #error not desktop
5507 #endif
5508 #endif
5509 EOF
5510         if [ "$pfx" = "" ]; then
5511             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5512             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5513         fi
5514     elif test_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5515         eval ${pfx}libc_type=klibc
5516     elif test_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5517         eval ${pfx}libc_type=bionic
5518     elif test_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5519         eval ${pfx}libc_type=solaris
5520         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5521     elif test_${pfx}cpp_condition sys/version.h "defined __DJGPP__"; then
5522         eval ${pfx}libc_type=djgpp
5523         add_cppflags -U__STRICT_ANSI__
5524         add_cflags "-include $source_path/compat/djgpp/math.h"
5525         add_compat djgpp/math.o
5526     fi
5527     test_${pfx}cc <<EOF
5528 #include <time.h>
5529 void *v = localtime_r;
5530 EOF
5531 test "$?" != 0 && test_${pfx}cc -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 <<EOF && add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5532 #include <time.h>
5533 void *v = localtime_r;
5534 EOF
5535
5536     eval test -n "\${${pfx}libc_type}" && enable ${pfx}libc_${libc_type}
5537 }
5538
5539 probe_libc
5540 probe_libc host_
5541
5542 # hacks for compiler/libc/os combinations
5543
5544 case $libc_type in
5545     bionic)
5546         add_compat strtod.o strtod=avpriv_strtod
5547         ;;
5548 esac
5549
5550 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5551     add_cppflags '-I\$(SRC_PATH)/compat/float'
5552
5553 test_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5554
5555 set_default libdir
5556 : ${shlibdir_default:="$libdir"}
5557 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5558
5559 set_default $PATHS_LIST
5560 set_default nm
5561
5562 disabled optimizations || enabled ossfuzz || check_cflags -fomit-frame-pointer
5563
5564 enable_weak_pic() {
5565     disabled pic && return
5566     enable pic
5567     add_cppflags -DPIC
5568     case "$target_os" in
5569     mingw*|cygwin*|win*)
5570         ;;
5571     *)
5572         add_cflags -fPIC
5573         add_asflags -fPIC
5574         ;;
5575     esac
5576 }
5577
5578 enabled pic && enable_weak_pic
5579
5580 test_cc <<EOF || die "Symbol mangling check failed."
5581 int ff_extern;
5582 EOF
5583 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5584 extern_prefix=${sym%%ff_extern*}
5585
5586 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
5587
5588 for restrict_keyword in restrict __restrict__ __restrict ""; do
5589     test_code cc "" "char * $restrict_keyword p" && break
5590 done
5591
5592 check_cc pragma_deprecated "" '_Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"")'
5593
5594 # The global variable ensures the bits appear unchanged in the object file.
5595 test_cc <<EOF || die "endian test failed"
5596 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5597 EOF
5598 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5599
5600 check_cc const_nan math.h "struct { double d; } static const bar[] = { { NAN } }"
5601
5602 if ! enabled ppc64 || enabled bigendian; then
5603     disable vsx
5604 fi
5605
5606 check_gas() {
5607     log "check_gas using '$as' as AS"
5608     # :vararg is used on aarch64, arm and ppc altivec
5609     check_as vararg "
5610 .macro m n, y:vararg=0
5611 \n: .int \y
5612 .endm
5613 m x" || return 1
5614     # .altmacro is only used in arm asm
5615     ! enabled arm || check_as gnu_as ".altmacro"
5616 }
5617
5618 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5619     nogas=:
5620     enabled_any arm aarch64 && nogas=die
5621     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5622     as_noop=-v
5623
5624     case $as_type in
5625         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5626         gcc)  gaspp_as_type=gas ;;
5627         *)    gaspp_as_type=$as_type ;;
5628     esac
5629
5630     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5631
5632     test "${as#*gas-preprocessor.pl}" != "$as" ||
5633     test_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5634         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5635
5636     if ! check_gas ; then
5637         as=${gas:=$as}
5638         check_gas || \
5639             $nogas "GNU assembler not found, install/update gas-preprocessor"
5640     fi
5641
5642     check_as as_func ".func test
5643                       .endfunc"
5644 fi
5645
5646 check_inline_asm inline_asm_labels '"1:\n"'
5647
5648 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5649
5650 if enabled aarch64; then
5651     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5652     # internal assembler in clang 3.3 does not support this instruction
5653     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5654     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5655
5656     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5657
5658 elif enabled alpha; then
5659
5660     check_cflags -mieee
5661
5662 elif enabled arm; then
5663
5664     enabled msvc && check_cpp_condition thumb stddef.h "defined _M_ARMT"
5665     test_cpp_condition stddef.h "defined __thumb__" && test_cc <<EOF && enable_weak thumb
5666 float func(float a, float b){ return a+b; }
5667 EOF
5668     enabled thumb && check_cflags -mthumb || check_cflags -marm
5669
5670     if check_cpp_condition vfp_args stddef.h "defined __ARM_PCS_VFP"; then
5671         :
5672     elif check_cpp_condition vfp_args stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5673         :
5674     elif ! test_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5675         case "${cross_prefix:-$cc}" in
5676             *hardfloat*) enable vfp_args; fpabi=vfp ;;
5677             *) check_ld "cc" vfp_args <<EOF && fpabi=vfp || fpabi=soft ;;
5678 __asm__ (".eabi_attribute 28, 1");
5679 int main(void) { return 0; }
5680 EOF
5681         esac
5682         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5683     fi
5684
5685     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5686     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5687     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5688     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5689     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5690     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5691     enabled setend  && check_insn setend  'setend be'
5692
5693     [ $target_os = linux ] || [ $target_os = android ] ||
5694         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5695             $ARCH_EXT_LIST_ARM
5696
5697     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5698
5699     check_as as_arch_directive ".arch armv7-a"
5700     check_as as_dn_directive   "ra .dn d0.i16"
5701     check_as as_fpu_directive  ".fpu neon"
5702
5703     # llvm's integrated assembler supports .object_arch from llvm 3.5
5704     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
5705         check_as as_object_arch ".object_arch armv4"
5706
5707     # MS armasm fails to assemble our PIC constructs
5708     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5709
5710 elif enabled mips; then
5711
5712     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5713     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5714     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5715
5716     # Enable minimum ISA based on selected options
5717     if enabled mips64; then
5718         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5719         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5720         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5721     else
5722         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5723         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5724         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5725         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5726     fi
5727
5728     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5729     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5730     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_headers msa.h || disable msa
5731     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5732     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5733
5734     if enabled bigendian && enabled msa; then
5735         disable msa
5736     fi
5737
5738 elif enabled parisc; then
5739
5740     if enabled gcc; then
5741         case $($cc -dumpversion) in
5742             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5743         esac
5744     fi
5745
5746 elif enabled ppc; then
5747
5748     enable local_aligned
5749
5750     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5751     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5752     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5753     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5754
5755     if enabled altivec; then
5756         check_cflags -maltivec -mabi=altivec
5757
5758         # check if our compiler supports Motorola AltiVec C API
5759         check_cc altivec altivec.h "vector signed int v1 = (vector signed int) { 0 };
5760                                     vector signed int v2 = (vector signed int) { 1 };
5761                                     v1 = vec_add(v1, v2);"
5762
5763         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5764     fi
5765
5766     if enabled vsx; then
5767         check_cflags -mvsx &&
5768         check_cc vsx altivec.h "int v[4] = { 0 };
5769                                 vector signed int v1 = vec_vsx_ld(0, v);"
5770     fi
5771
5772     if enabled power8; then
5773         check_cpp_condition power8 "altivec.h" "defined(_ARCH_PWR8)"
5774     fi
5775
5776 elif enabled x86; then
5777
5778     check_builtin rdtsc    intrin.h   "__rdtsc()"
5779     check_builtin mm_empty mmintrin.h "_mm_empty()"
5780
5781     enable local_aligned
5782
5783     # check whether EBP is available on x86
5784     # As 'i' is stored on the stack, this program will crash
5785     # if the base pointer is used to access it because the
5786     # base pointer is cleared in the inline assembly code.
5787     check_exec_crash <<EOF && enable ebp_available
5788 volatile int i=0;
5789 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5790 return i;
5791 EOF
5792
5793     # check whether EBX is available on x86
5794     check_inline_asm ebx_available '""::"b"(0)' &&
5795         check_inline_asm ebx_available '"":::"%ebx"'
5796
5797     # check whether xmm clobbers are supported
5798     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5799
5800     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5801         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5802
5803     # check whether binutils is new enough to compile SSSE3/MMXEXT
5804     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5805     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5806
5807     probe_x86asm(){
5808         x86asmexe_probe=$1
5809         if test_cmd $x86asmexe_probe -v; then
5810             x86asmexe=$x86asmexe_probe
5811             x86asm_type=nasm
5812             x86asm_debug="-g -F dwarf"
5813             X86ASMDEP=
5814             X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
5815         elif test_cmd $x86asmexe_probe --version; then
5816             x86asmexe=$x86asmexe_probe
5817             x86asm_type=yasm
5818             x86asm_debug="-g dwarf2"
5819             X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
5820             X86ASM_DEPFLAGS=
5821         fi
5822         check_x86asm x86asm "movbe ecx, [5]"
5823     }
5824
5825     if ! disabled_any asm mmx x86asm; then
5826         disable x86asm
5827         for program in $x86asmexe nasm yasm; do
5828             probe_x86asm $program && break
5829         done
5830         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
5831         X86ASMFLAGS="-f $objformat"
5832         enabled pic               && append X86ASMFLAGS "-DPIC"
5833         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
5834         case "$objformat" in
5835             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
5836         esac
5837
5838         check_x86asm avx512_external "vmovdqa32 [eax]{k1}{z}, zmm0"
5839         check_x86asm avx2_external   "vextracti128 xmm0, ymm0, 0"
5840         check_x86asm xop_external    "vpmacsdd xmm0, xmm1, xmm2, xmm3"
5841         check_x86asm fma4_external   "vfmaddps ymm0, ymm1, ymm2, ymm3"
5842         check_x86asm cpunop          "CPU amdnop"
5843     fi
5844
5845     case "$cpu" in
5846         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5847             disable fast_clz
5848         ;;
5849     esac
5850
5851 fi
5852
5853 check_cc intrinsics_neon arm_neon.h "int16x8_t test = vdupq_n_s16(0)"
5854
5855 check_ldflags -Wl,--as-needed
5856 check_ldflags -Wl,-z,noexecstack
5857
5858 if ! disabled network; then
5859     check_func getaddrinfo $network_extralibs
5860     check_func inet_aton $network_extralibs
5861
5862     check_type netdb.h "struct addrinfo"
5863     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5864     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5865     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5866     check_type poll.h "struct pollfd"
5867     check_type netinet/sctp.h "struct sctp_event_subscribe"
5868     check_struct "sys/socket.h" "struct msghdr" msg_flags
5869     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5870     check_type netinet/in.h "struct sockaddr_in6"
5871     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5872     check_type "sys/types.h sys/socket.h" socklen_t
5873
5874     # Prefer arpa/inet.h over winsock2
5875     if check_headers arpa/inet.h ; then
5876         check_func closesocket
5877     elif check_headers winsock2.h ; then
5878         check_func_headers winsock2.h closesocket -lws2 &&
5879             network_extralibs="-lws2" ||
5880         { check_func_headers winsock2.h closesocket -lws2_32 &&
5881             network_extralibs="-lws2_32"; } || disable winsock2_h network
5882         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5883
5884         check_type ws2tcpip.h socklen_t
5885         check_type ws2tcpip.h "struct addrinfo"
5886         check_type ws2tcpip.h "struct group_source_req"
5887         check_type ws2tcpip.h "struct ip_mreq_source"
5888         check_type ws2tcpip.h "struct ipv6_mreq"
5889         check_type winsock2.h "struct pollfd"
5890         check_struct winsock2.h "struct sockaddr" sa_len
5891         check_type ws2tcpip.h "struct sockaddr_in6"
5892         check_type ws2tcpip.h "struct sockaddr_storage"
5893     else
5894         disable network
5895     fi
5896 fi
5897
5898 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5899 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5900 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5901 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5902 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5903 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5904 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5905
5906 case "$custom_allocator" in
5907     jemalloc)
5908         # jemalloc by default does not use a prefix
5909         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5910     ;;
5911     tcmalloc)
5912         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
5913         malloc_prefix=tc_
5914     ;;
5915 esac
5916
5917 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5918 check_func  ${malloc_prefix}memalign            && enable memalign
5919 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5920
5921 check_func  access
5922 check_func_headers stdlib.h arc4random
5923 check_lib   clock_gettime time.h clock_gettime || check_lib clock_gettime time.h clock_gettime -lrt
5924 check_func  fcntl
5925 check_func  fork
5926 check_func  gethrtime
5927 check_func  getopt
5928 check_func  getrusage
5929 check_func  gettimeofday
5930 check_func  isatty
5931 check_func  mkstemp
5932 check_func  mmap
5933 check_func  mprotect
5934 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5935 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
5936 check_func  sched_getaffinity
5937 check_func  setrlimit
5938 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5939 check_func  strerror_r
5940 check_func  sysconf
5941 check_func  sysctl
5942 check_func  usleep
5943
5944 check_func_headers conio.h kbhit
5945 check_func_headers io.h setmode
5946 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5947 check_func_headers mach/mach_time.h mach_absolute_time
5948 check_func_headers stdlib.h getenv
5949 check_func_headers sys/stat.h lstat
5950
5951 check_func_headers windows.h GetProcessAffinityMask
5952 check_func_headers windows.h GetProcessTimes
5953 check_func_headers windows.h GetSystemTimeAsFileTime
5954 check_func_headers windows.h LoadLibrary
5955 check_func_headers windows.h MapViewOfFile
5956 check_func_headers windows.h PeekNamedPipe
5957 check_func_headers windows.h SetConsoleTextAttribute
5958 check_func_headers windows.h SetConsoleCtrlHandler
5959 check_func_headers windows.h Sleep
5960 check_func_headers windows.h VirtualAlloc
5961 check_func_headers glob.h glob
5962 enabled xlib &&
5963     check_lib xlib "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5964
5965 check_headers direct.h
5966 check_headers dirent.h
5967 check_headers dxgidebug.h
5968 check_headers dxva.h
5969 check_headers dxva2api.h -D_WIN32_WINNT=0x0600
5970 check_headers io.h
5971 check_headers linux/perf_event.h
5972 check_headers libcrystalhd/libcrystalhd_if.h
5973 check_headers malloc.h
5974 check_headers net/udplite.h
5975 check_headers poll.h
5976 check_headers sys/param.h
5977 check_headers sys/resource.h
5978 check_headers sys/select.h
5979 check_headers sys/time.h
5980 check_headers sys/un.h
5981 check_headers termios.h
5982 check_headers unistd.h
5983 check_headers valgrind/valgrind.h
5984 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5985 check_headers windows.h
5986 check_headers X11/extensions/XvMClib.h
5987 check_headers asm/types.h
5988
5989 # it seems there are versions of clang in some distros that try to use the
5990 # gcc headers, which explodes for stdatomic
5991 # so we also check that atomics actually work here
5992 check_builtin stdatomic stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0); foo += bar"
5993
5994 check_lib advapi32 "windows.h"            RegCloseKey          -ladvapi32
5995 check_lib bcrypt   "windows.h bcrypt.h"   BCryptGenRandom      -lbcrypt &&
5996     check_cpp_condition bcrypt bcrypt.h "defined BCRYPT_RNG_ALGORITHM"
5997 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
5998 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
5999 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
6000
6001 check_lib android android/native_window.h ANativeWindow_acquire -landroid
6002 check_lib mediandk "stdint.h media/NdkImage.h" AImage_delete -lmediandk
6003 check_lib camera2ndk "stdbool.h stdint.h camera/NdkCameraManager.h" ACameraManager_create -lcamera2ndk
6004
6005 enabled appkit       && check_apple_framework AppKit
6006 enabled audiotoolbox && check_apple_framework AudioToolbox
6007 enabled avfoundation && check_apple_framework AVFoundation
6008 enabled coreimage    && check_apple_framework CoreImage
6009 enabled videotoolbox && check_apple_framework VideoToolbox
6010
6011 check_apple_framework CoreFoundation
6012 check_apple_framework CoreMedia
6013 check_apple_framework CoreVideo
6014
6015 enabled avfoundation && {
6016     disable coregraphics applicationservices
6017     check_lib coregraphics        CoreGraphics/CoreGraphics.h               CGGetActiveDisplayList "-framework CoreGraphics" ||
6018     check_lib applicationservices ApplicationServices/ApplicationServices.h CGGetActiveDisplayList "-framework ApplicationServices"; }
6019
6020 enabled videotoolbox && {
6021     check_lib coreservices CoreServices/CoreServices.h UTGetOSTypeFromString "-framework CoreServices"
6022     check_func_headers CoreMedia/CMFormatDescription.h kCMVideoCodecType_HEVC "-framework CoreMedia"
6023     check_func_headers CoreVideo/CVPixelBuffer.h kCVPixelFormatType_420YpCbCr10BiPlanarVideoRange "-framework CoreVideo"
6024 }
6025
6026 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
6027
6028 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
6029 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
6030 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
6031 check_type "windows.h d3d11.h" "ID3D11VideoContext"
6032 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
6033
6034 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
6035
6036 if enabled cuda_sdk; then
6037     warn "Option --enable-cuda-sdk is deprecated. Use --enable-cuda-nvcc instead."
6038     enable cuda_nvcc
6039 fi
6040
6041 if ! disabled ffnvcodec; then
6042     ffnv_hdr_list="ffnvcodec/nvEncodeAPI.h ffnvcodec/dynlink_cuda.h ffnvcodec/dynlink_cuviddec.h ffnvcodec/dynlink_nvcuvid.h"
6043     check_pkg_config ffnvcodec "ffnvcodec >= 9.0.18.0" "$ffnv_hdr_list" "" || \
6044       check_pkg_config ffnvcodec "ffnvcodec >= 8.2.15.8 ffnvcodec < 8.3" "$ffnv_hdr_list" "" || \
6045       check_pkg_config ffnvcodec "ffnvcodec >= 8.1.24.9 ffnvcodec < 8.2" "$ffnv_hdr_list" "" || \
6046       check_pkg_config ffnvcodec "ffnvcodec >= 8.0.14.9 ffnvcodec < 8.1" "$ffnv_hdr_list" ""
6047 fi
6048
6049 check_cpp_condition winrt windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)"
6050
6051 if ! disabled w32threads && ! enabled pthreads; then
6052     check_func_headers "windows.h process.h" _beginthreadex &&
6053         check_type "windows.h" CONDITION_VARIABLE &&
6054         check_type "windows.h" INIT_ONCE &&
6055         enable w32threads || disable w32threads
6056     if ! enabled w32threads && enabled winrt; then
6057         check_func_headers "windows.h" CreateThread &&
6058             enable w32threads || disable w32threads
6059     fi
6060 fi
6061
6062 # check for some common methods of building with pthread support
6063 # do this before the optional library checks as some of them require pthreads
6064 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
6065     if check_lib pthreads pthread.h pthread_join   -pthread &&
6066        check_lib pthreads pthread.h pthread_create -pthread; then
6067         add_cflags -pthread
6068     elif check_lib pthreads pthread.h pthread_join   -pthreads &&
6069          check_lib pthreads pthread.h pthread_create -pthreads; then
6070         add_cflags -pthreads
6071     elif check_lib pthreads pthread.h pthread_join   -ldl -pthread &&
6072          check_lib pthreads pthread.h pthread_create -ldl -pthread; then
6073         add_cflags -ldl -pthread
6074     elif check_lib pthreads pthread.h pthread_join   -lpthreadGC2 &&
6075          check_lib pthreads pthread.h pthread_create -lpthreadGC2; then
6076         :
6077     elif check_lib pthreads pthread.h pthread_join   -lpthread &&
6078          check_lib pthreads pthread.h pthread_create -lpthread; then
6079         :
6080     elif check_func pthread_join && check_func pthread_create; then
6081         enable pthreads
6082     fi
6083     check_cc pthreads "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER"
6084
6085     if enabled pthreads; then
6086         check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
6087         check_func pthread_cancel $pthreads_extralibs
6088     fi
6089 fi
6090
6091 enabled  zlib && { check_pkg_config zlib zlib "zlib.h" zlibVersion ||
6092                    check_lib zlib   zlib.h      zlibVersion    -lz; }
6093 enabled bzlib && check_lib bzlib bzlib.h BZ2_bzlibVersion    -lbz2
6094 enabled  lzma && check_lib lzma   lzma.h lzma_version_number -llzma
6095
6096 # On some systems dynamic loading requires no extra linker flags
6097 check_lib libdl dlfcn.h "dlopen dlsym" || check_lib libdl dlfcn.h "dlopen dlsym" -ldl
6098
6099 check_lib libm math.h sin -lm
6100
6101 atan2f_args=2
6102 copysign_args=2
6103 hypot_args=2
6104 ldexpf_args=2
6105 powf_args=2
6106
6107 for func in $MATH_FUNCS; do
6108     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
6109 done
6110
6111 for func in $COMPLEX_FUNCS; do
6112     eval check_complexfunc $func \${${func}_args:-1}
6113 done
6114
6115 # these are off by default, so fail if requested and not available
6116 enabled cuda_nvcc         && { check_nvcc || die "ERROR: failed checking for nvcc."; }
6117 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
6118 enabled decklink          && { require_headers DeckLinkAPI.h &&
6119                                { test_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a090500" || die "ERROR: Decklink API version must be >= 10.9.5."; } }
6120 enabled frei0r            && require_headers "frei0r.h dlfcn.h"
6121 enabled gmp               && require gmp gmp.h mpz_export -lgmp
6122 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init
6123 enabled jni               && { [ $target_os = "android" ] && check_headers jni.h && enabled pthreads || die "ERROR: jni not found"; }
6124 enabled ladspa            && require_headers "ladspa.h dlfcn.h"
6125 enabled libaom            && require_pkg_config libaom "aom >= 1.0.0" aom/aom_codec.h aom_codec_version
6126 enabled libaribb24        && { check_pkg_config libaribb24 "aribb24 > 1.0.3" "aribb24/aribb24.h" arib_instance_new ||
6127                                { enabled gpl && require_pkg_config libaribb24 aribb24 "aribb24/aribb24.h" arib_instance_new; } ||
6128                                die "ERROR: libaribb24 requires version higher than 1.0.3 or --enable-gpl."; }
6129 enabled lv2               && require_pkg_config lv2 lilv-0 "lilv/lilv.h" lilv_world_new
6130 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
6131 enabled libass            && require_pkg_config libass libass ass/ass.h ass_library_init
6132 enabled libbluray         && require_pkg_config libbluray libbluray libbluray/bluray.h bd_open
6133 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
6134 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
6135                              { check_lib libcelt celt/celt.h celt_decoder_create_custom -lcelt0 ||
6136                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
6137 enabled libcaca           && require_pkg_config libcaca caca caca.h caca_create_canvas
6138 enabled libcodec2         && require libcodec2 codec2/codec2.h codec2_create -lcodec2
6139 enabled libdav1d          && require_pkg_config libdav1d "dav1d >= 0.2.1" "dav1d/dav1d.h" dav1d_version
6140 enabled libdavs2          && require_pkg_config libdavs2 "davs2 >= 1.6.0" davs2.h davs2_decoder_open
6141 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
6142 enabled libdrm            && require_pkg_config libdrm libdrm xf86drm.h drmGetVersion
6143 enabled libfdk_aac        && { check_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
6144                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
6145                                  warn "using libfdk without pkg-config"; } }
6146 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"
6147 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_extralibs
6148 enabled fontconfig        && enable libfontconfig
6149 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
6150 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
6151 enabled libfribidi        && require_pkg_config libfribidi fribidi fribidi.h fribidi_version_info
6152 enabled libgme            && { check_pkg_config libgme libgme gme/gme.h gme_new_emu ||
6153                                require libgme gme/gme.h gme_new_emu -lgme -lstdc++; }
6154 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
6155                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
6156                                done || die "ERROR: libgsm not found"; }
6157 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc $pthreads_extralibs
6158 enabled libklvanc         && require libklvanc libklvanc/vanc.h klvanc_context_create -lklvanc
6159 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
6160 enabled liblensfun        && require_pkg_config liblensfun lensfun lensfun.h lf_db_new
6161 # While it may appear that require is being used as a pkg-config
6162 # fallback for libmfx, it is actually being used to detect a different
6163 # installation route altogether.  If libmfx is installed via the Intel
6164 # Media SDK or Intel Media Server Studio, these don't come with
6165 # pkg-config support.  Instead, users should make sure that the build
6166 # can find the libraries and headers through other means.
6167 enabled libmfx            && { check_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit ||
6168                                { require libmfx "mfx/mfxvideo.h" MFXInit "-llibmfx $advapi32_extralibs" && warn "using libmfx without pkg-config"; } }
6169 enabled libmodplug        && require_pkg_config libmodplug libmodplug libmodplug/modplug.h ModPlug_Load
6170 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame $libm_extralibs
6171 enabled libmysofa         && { check_pkg_config libmysofa libmysofa mysofa.h mysofa_load ||
6172                                require libmysofa mysofa.h mysofa_load -lmysofa $zlib_extralibs; }
6173 enabled libnpp            && { check_lib libnpp npp.h nppGetLibVersion -lnppig -lnppicc -lnppc -lnppidei ||
6174                                check_lib libnpp npp.h nppGetLibVersion -lnppi -lnppc -lnppidei ||
6175                                die "ERROR: libnpp not found"; }
6176 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
6177 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
6178 enabled libopencv         && { check_headers opencv2/core/core_c.h &&
6179                                { check_pkg_config libopencv opencv opencv2/core/core_c.h cvCreateImageHeader ||
6180                                  require libopencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
6181                                require_pkg_config libopencv opencv opencv/cxcore.h cvCreateImageHeader; }
6182 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
6183 enabled libopenjpeg       && { check_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version ||
6184                                { require_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } }
6185 enabled libopenmpt        && require_pkg_config libopenmpt "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create -lstdc++ && append libopenmpt_extralibs "-lstdc++"
6186 enabled libopus           && {
6187     enabled libopus_decoder && {
6188         require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
6189     }
6190     enabled libopus_encoder && {
6191         require_pkg_config libopus opus opus_multistream.h opus_multistream_surround_encoder_create
6192     }
6193 }
6194 enabled libpulse          && require_pkg_config libpulse libpulse pulse/pulseaudio.h pa_context_new
6195 enabled librsvg           && require_pkg_config librsvg librsvg-2.0 librsvg-2.0/librsvg/rsvg.h rsvg_handle_render_cairo
6196 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
6197 enabled librubberband     && require_pkg_config librubberband "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new -lstdc++ && append librubberband_extralibs "-lstdc++"
6198 enabled libshine          && require_pkg_config libshine shine shine/layer3.h shine_encode_buffer
6199 enabled libsmbclient      && { check_pkg_config libsmbclient smbclient libsmbclient.h smbc_init ||
6200                                require libsmbclient libsmbclient.h smbc_init -lsmbclient; }
6201 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy -lstdc++
6202 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
6203 enabled libssh            && require_pkg_config libssh libssh libssh/sftp.h sftp_init
6204 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init
6205 enabled libsrt            && require_pkg_config libsrt "srt >= 1.3.0" srt/srt.h srt_socket
6206 enabled libtensorflow     && require libtensorflow tensorflow/c/c_api.h TF_Version -ltensorflow
6207 enabled libtesseract      && require_pkg_config libtesseract tesseract tesseract/capi.h TessBaseAPICreate
6208 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
6209 enabled libtls            && require_pkg_config libtls libtls tls.h tls_configure
6210 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
6211                              { check_lib libtwolame twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
6212                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
6213 enabled libv4l2           && require_pkg_config libv4l2 libv4l2 libv4l2.h v4l2_ioctl
6214 enabled libvidstab        && require_pkg_config libvidstab "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
6215 enabled libvmaf           && require_pkg_config libvmaf "libvmaf >= 1.3.9" libvmaf.h compute_vmaf
6216 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
6217 enabled libvorbis         && require_pkg_config libvorbis vorbis vorbis/codec.h vorbis_info_init &&
6218                              require_pkg_config libvorbisenc vorbisenc vorbis/vorbisenc.h vorbis_encode_init
6219
6220 enabled libvpx            && {
6221     enabled libvpx_vp8_decoder && {
6222         check_pkg_config libvpx_vp8_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
6223             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"
6224     }
6225     enabled libvpx_vp8_encoder && {
6226         check_pkg_config libvpx_vp8_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
6227             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"
6228     }
6229     enabled libvpx_vp9_decoder && {
6230         check_pkg_config libvpx_vp9_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
6231             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"
6232     }
6233     enabled libvpx_vp9_encoder && {
6234         check_pkg_config libvpx_vp9_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
6235             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"
6236     }
6237     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
6238         die "libvpx enabled but no supported decoders found"
6239     fi
6240 }
6241
6242 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
6243 enabled libwebp           && {
6244     enabled libwebp_encoder      && require_pkg_config libwebp "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
6245     enabled libwebp_anim_encoder && check_pkg_config libwebp_anim_encoder "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit; }
6246 enabled libx264           && { check_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode ||
6247                                { require libx264 "stdint.h x264.h" x264_encoder_encode "-lx264 $pthreads_extralibs $libm_extralibs" &&
6248                                  warn "using libx264 without pkg-config"; } } &&
6249                              require_cpp_condition libx264 x264.h "X264_BUILD >= 118" &&
6250                              check_cpp_condition libx262 x264.h "X264_MPEG2"
6251 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
6252                              require_cpp_condition libx265 x265.h "X265_BUILD >= 68"
6253 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode "-lxavs $pthreads_extralibs $libm_extralibs"
6254 enabled libxavs2          && require_pkg_config libxavs2 "xavs2 >= 1.3.0" "stdint.h xavs2.h" xavs2_api_get
6255 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
6256 enabled libzimg           && require_pkg_config libzimg "zimg >= 2.7.0" zimg.h zimg_get_api_version
6257 enabled libzmq            && require_pkg_config libzmq libzmq zmq.h zmq_ctx_new
6258 enabled libzvbi           && require_pkg_config libzvbi zvbi-0.2 libzvbi.h vbi_decoder_new &&
6259                              { test_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
6260                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
6261 enabled libxml2           && require_pkg_config libxml2 libxml-2.0 libxml2/libxml/xmlversion.h xmlCheckVersion
6262 enabled mbedtls           && { check_pkg_config mbedtls mbedtls mbedtls/x509_crt.h mbedtls_x509_crt_init ||
6263                                check_pkg_config mbedtls mbedtls mbedtls/ssl.h mbedtls_ssl_init ||
6264                                check_lib mbedtls mbedtls/ssl.h mbedtls_ssl_init -lmbedtls -lmbedx509 -lmbedcrypto ||
6265                                die "ERROR: mbedTLS not found"; }
6266 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
6267 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
6268                                { ! enabled cross_compile &&
6269                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
6270                                  add_ldflags -L/opt/vc/lib/ &&
6271                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
6272                                die "ERROR: mmal not found" &&
6273                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
6274 enabled openal            && { { for al_extralibs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
6275                                check_lib openal 'AL/al.h' alGetError "${al_extralibs}" && break; done } ||
6276                                die "ERROR: openal not found"; } &&
6277                              { test_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
6278                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
6279 enabled opencl            && { check_pkg_config opencl OpenCL CL/cl.h clEnqueueNDRangeKernel ||
6280                                check_lib opencl OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
6281                                check_lib opencl CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
6282                                die "ERROR: opencl not found"; } &&
6283                              { test_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
6284                                test_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
6285                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
6286 enabled opengl            && { check_lib opengl GL/glx.h glXGetProcAddress "-lGL" ||
6287                                check_lib opengl windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
6288                                check_lib opengl OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
6289                                check_lib opengl ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
6290                                die "ERROR: opengl not found."
6291                              }
6292 enabled omx               && require_headers OMX_Core.h
6293 enabled omx_rpi           && { check_headers OMX_Core.h ||
6294                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_headers OMX_Core.h ; } ||
6295                                die "ERROR: OpenMAX IL headers not found"; } && enable omx
6296 enabled openssl           && { check_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
6297                                check_pkg_config openssl openssl openssl/ssl.h SSL_library_init ||
6298                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
6299                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
6300                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
6301                                die "ERROR: openssl not found"; }
6302 enabled rkmpp             && { require_pkg_config rkmpp rockchip_mpp  rockchip/rk_mpi.h mpp_create &&
6303                                require_pkg_config rockchip_mpp "rockchip_mpp >= 1.3.7" rockchip/rk_mpi.h mpp_create &&
6304                                { enabled libdrm ||
6305                                  die "ERROR: rkmpp requires --enable-libdrm"; }
6306                              }
6307 enabled vapoursynth       && require_pkg_config vapoursynth "vapoursynth-script >= 42" VSScript.h vsscript_init
6308
6309
6310 if enabled gcrypt; then
6311     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
6312     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
6313         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
6314         gcrypt_extralibs=$("${GCRYPT_CONFIG}" --libs)
6315         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_extralibs ||
6316             die "ERROR: gcrypt not found"
6317         add_cflags $gcrypt_cflags
6318     else
6319         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
6320     fi
6321 fi
6322
6323 if enabled sdl2; then
6324     SDL2_CONFIG="${cross_prefix}sdl2-config"
6325     test_pkg_config sdl2 "sdl2 >= 2.0.1 sdl2 < 2.1.0" SDL_events.h SDL_PollEvent
6326     if disabled sdl2 && "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
6327         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
6328         sdl2_extralibs=$("${SDL2_CONFIG}" --libs)
6329         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
6330         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
6331         check_func_headers SDL_events.h SDL_PollEvent $sdl2_extralibs $sdl2_cflags &&
6332             enable sdl2
6333     fi
6334     if test $target_os = "mingw32"; then
6335         sdl2_extralibs=$(filter_out '-mwindows' $sdl2_extralibs)
6336     fi
6337 fi
6338
6339 if enabled decklink; then
6340     case $target_os in
6341         mingw32*|mingw64*|win32|win64)
6342             decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
6343             decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
6344             ;;
6345     esac
6346 fi
6347
6348 enabled securetransport &&
6349     check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
6350     check_lib securetransport "Security/SecureTransport.h Security/Security.h" "SSLCreateContext" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" ||
6351         disable securetransport
6352
6353 enabled securetransport &&
6354     check_func SecItemImport "-Wl,-framework,CoreFoundation -Wl,-framework,Security"
6355
6356 enabled schannel &&
6357     check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
6358     test_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" &&
6359     schannel_extralibs="-lsecur32" ||
6360         disable schannel
6361
6362 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
6363 enabled makeinfo \
6364     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
6365     && enable makeinfo_html || disable makeinfo_html
6366 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
6367 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
6368 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
6369 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
6370
6371 # check V4L2 codecs available in the API
6372 check_headers linux/fb.h
6373 check_headers linux/videodev2.h
6374 test_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6375 check_cc v4l2_m2m linux/videodev2.h "int i = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_VIDEO_M2M | V4L2_BUF_FLAG_LAST;"
6376 check_cc vc1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VC1_ANNEX_G;"
6377 check_cc mpeg1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG1;"
6378 check_cc mpeg2_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG2;"
6379 check_cc mpeg4_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG4;"
6380 check_cc hevc_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_HEVC;"
6381 check_cc h263_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H263;"
6382 check_cc h264_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H264;"
6383 check_cc vp8_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP8;"
6384 check_cc vp9_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP9;"
6385
6386 check_headers sys/videoio.h
6387 test_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6388
6389 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
6390 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
6391 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
6392 # w32api 3.12 had it defined wrong
6393 check_cpp_condition vfwcap_defines vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER"
6394
6395 check_type "dshow.h" IBaseFilter
6396
6397 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
6398 check_headers "dev/bktr/ioctl_meteor.h dev/bktr/ioctl_bt848.h"                   ||
6399     check_headers "machine/ioctl_meteor.h machine/ioctl_bt848.h"                 ||
6400     check_headers "dev/video/meteor/ioctl_meteor.h dev/video/bktr/ioctl_bt848.h" ||
6401     check_headers "dev/ic/bt8xx.h"
6402
6403 if check_struct sys/soundcard.h audio_buf_info bytes; then
6404     enable_sanitized sys/soundcard.h
6405 else
6406     test_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_sanitized sys/soundcard.h
6407     #include <sys/soundcard.h>
6408     audio_buf_info abc;
6409 EOF
6410 fi
6411
6412 enabled alsa && check_pkg_config alsa alsa "alsa/asoundlib.h" snd_pcm_htimestamp ||
6413     check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound
6414
6415 enabled libjack &&
6416     require_pkg_config libjack jack jack/jack.h jack_port_get_latency_range
6417
6418 enabled sndio && check_lib sndio sndio.h sio_open -lsndio
6419
6420 if enabled libcdio; then
6421     check_pkg_config libcdio libcdio_paranoia "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open ||
6422     check_pkg_config libcdio libcdio_paranoia "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open ||
6423     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6424     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6425     die "ERROR: No usable libcdio/cdparanoia found"
6426 fi
6427
6428 enabled libxcb && check_pkg_config libxcb "xcb >= 1.4" xcb/xcb.h xcb_connect ||
6429     disable libxcb_shm libxcb_shape libxcb_xfixes
6430
6431 if enabled libxcb; then
6432     enabled libxcb_shm    && check_pkg_config libxcb_shm    xcb-shm    xcb/shm.h    xcb_shm_attach
6433     enabled libxcb_shape  && check_pkg_config libxcb_shape  xcb-shape  xcb/shape.h  xcb_shape_get_rectangles
6434     enabled libxcb_xfixes && check_pkg_config libxcb_xfixes xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image
6435 fi
6436
6437 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6438
6439 # d3d11va requires linking directly to dxgi and d3d11 if not building for
6440 # the desktop api partition
6441 test_cpp <<EOF && enable uwp && d3d11va_extralibs="-ldxgi -ld3d11"
6442 #ifdef WINAPI_FAMILY
6443 #include <winapifamily.h>
6444 #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
6445 #error desktop, not uwp
6446 #else
6447 // WINAPI_FAMILY_APP, WINAPI_FAMILY_PHONE_APP => UWP
6448 #endif
6449 #else
6450 #error no family set
6451 #endif
6452 EOF
6453
6454 enabled vaapi &&
6455     check_pkg_config vaapi "libva >= 0.35.0" "va/va.h" vaInitialize
6456
6457 if enabled vaapi; then
6458     check_pkg_config vaapi_drm "libva-drm" "va/va_drm.h" vaGetDisplayDRM
6459
6460     if enabled xlib; then
6461         check_pkg_config vaapi_x11 "libva-x11" "va/va_x11.h" vaGetDisplay
6462     fi
6463
6464     check_cpp_condition vaapi_1 "va/va.h" "VA_CHECK_VERSION(1, 0, 0)"
6465
6466     check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
6467     check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
6468     check_struct "va/va.h va/va_vpp.h" "VAProcPipelineCaps" rotation_flags
6469     check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
6470     check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
6471     check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
6472     check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
6473 fi
6474
6475 if enabled_all opencl libdrm ; then
6476     check_type "CL/cl_intel.h" "clCreateImageFromFdINTEL_fn" &&
6477         enable opencl_drm_beignet
6478     check_func_headers "CL/cl_ext.h" clImportMemoryARM &&
6479         enable opencl_drm_arm
6480 fi
6481
6482 if enabled_all opencl vaapi ; then
6483     if enabled opencl_drm_beignet ; then
6484         enable opencl_vaapi_beignet
6485     else
6486         check_type "CL/cl.h CL/cl_va_api_media_sharing_intel.h" "clCreateFromVA_APIMediaSurfaceINTEL_fn" &&
6487             enable opencl_vaapi_intel_media
6488     fi
6489 fi
6490
6491 if enabled_all opencl dxva2 ; then
6492     check_type "CL/cl_dx9_media_sharing.h" cl_dx9_surface_info_khr &&
6493         enable opencl_dxva2
6494 fi
6495
6496 if enabled_all opencl d3d11va ; then
6497     check_type "CL/cl_d3d11.h" clGetDeviceIDsFromD3D11KHR_fn &&
6498         enable opencl_d3d11
6499 fi
6500
6501 enabled vdpau &&
6502     check_cpp_condition vdpau vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP"
6503
6504 enabled vdpau &&
6505     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
6506
6507 enabled crystalhd && check_lib crystalhd "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd
6508
6509 if enabled x86; then
6510     case $target_os in
6511         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6512             ;;
6513         *)
6514             disable ffnvcodec cuvid nvdec nvenc
6515             ;;
6516     esac
6517 else
6518     disable ffnvcodec cuvid nvdec nvenc
6519 fi
6520
6521 enabled ffnvcodec && enable cuda
6522
6523 enabled nvenc &&
6524     test_cc -I$source_path <<EOF || disable nvenc
6525 #include <ffnvcodec/nvEncodeAPI.h>
6526 NV_ENCODE_API_FUNCTION_LIST flist;
6527 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6528 int main(void) { return 0; }
6529 EOF
6530
6531 enabled amf &&
6532     check_cpp_condition amf "AMF/core/Version.h" \
6533         "(AMF_VERSION_MAJOR << 48 | AMF_VERSION_MINOR << 32 | AMF_VERSION_RELEASE << 16 | AMF_VERSION_BUILD_NUM) >= 0x0001000400040001"
6534
6535 # Funny iconv installations are not unusual, so check it after all flags have been set
6536 if enabled libc_iconv; then
6537     check_func_headers iconv.h iconv
6538 elif enabled iconv; then
6539     check_func_headers iconv.h iconv || check_lib iconv iconv.h iconv -liconv
6540 fi
6541
6542 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6543
6544 # add some useful compiler flags if supported
6545 check_cflags -Wdeclaration-after-statement
6546 check_cflags -Wall
6547 check_cflags -Wdisabled-optimization
6548 check_cflags -Wpointer-arith
6549 check_cflags -Wredundant-decls
6550 check_cflags -Wwrite-strings
6551 check_cflags -Wtype-limits
6552 check_cflags -Wundef
6553 check_cflags -Wmissing-prototypes
6554 check_cflags -Wno-pointer-to-int-cast
6555 check_cflags -Wstrict-prototypes
6556 check_cflags -Wempty-body
6557
6558 if enabled extra_warnings; then
6559     check_cflags -Wcast-qual
6560     check_cflags -Wextra
6561     check_cflags -Wpedantic
6562 fi
6563
6564 check_disable_warning(){
6565     warning_flag=-W${1#-Wno-}
6566     test_cflags $unknown_warning_flags $warning_flag && add_cflags $1
6567 }
6568
6569 test_cflags -Werror=unused-command-line-argument &&
6570     append unknown_warning_flags "-Werror=unused-command-line-argument"
6571 test_cflags -Werror=unknown-warning-option &&
6572     append unknown_warning_flags "-Werror=unknown-warning-option"
6573
6574 check_disable_warning -Wno-parentheses
6575 check_disable_warning -Wno-switch
6576 check_disable_warning -Wno-format-zero-length
6577 check_disable_warning -Wno-pointer-sign
6578 check_disable_warning -Wno-unused-const-variable
6579 check_disable_warning -Wno-bool-operation
6580 check_disable_warning -Wno-char-subscripts
6581
6582 check_disable_warning_headers(){
6583     warning_flag=-W${1#-Wno-}
6584     test_cflags $warning_flag && add_cflags_headers $1
6585 }
6586
6587 check_disable_warning_headers -Wno-deprecated-declarations
6588 check_disable_warning_headers -Wno-unused-variable
6589
6590 test_cc <<EOF && enable blocks_extension
6591 void (^block)(void);
6592 EOF
6593
6594 # add some linker flags
6595 check_ldflags -Wl,--warn-common
6596 check_ldflags -Wl,-rpath-link=:libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6597 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir && add_ldsoflags -Wl,-rpath,$libdir
6598 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6599
6600 # add some strip flags
6601 check_stripflags -x
6602
6603 enabled neon_clobber_test &&
6604     check_ldflags -Wl,--wrap,avcodec_open2              \
6605                   -Wl,--wrap,avcodec_decode_audio4      \
6606                   -Wl,--wrap,avcodec_decode_video2      \
6607                   -Wl,--wrap,avcodec_decode_subtitle2   \
6608                   -Wl,--wrap,avcodec_encode_audio2      \
6609                   -Wl,--wrap,avcodec_encode_video2      \
6610                   -Wl,--wrap,avcodec_encode_subtitle    \
6611                   -Wl,--wrap,avcodec_send_packet        \
6612                   -Wl,--wrap,avcodec_receive_packet     \
6613                   -Wl,--wrap,avcodec_send_frame         \
6614                   -Wl,--wrap,avcodec_receive_frame      \
6615                   -Wl,--wrap,swr_convert                \
6616                   -Wl,--wrap,avresample_convert ||
6617     disable neon_clobber_test
6618
6619 enabled xmm_clobber_test &&
6620     check_ldflags -Wl,--wrap,avcodec_open2              \
6621                   -Wl,--wrap,avcodec_decode_audio4      \
6622                   -Wl,--wrap,avcodec_decode_video2      \
6623                   -Wl,--wrap,avcodec_decode_subtitle2   \
6624                   -Wl,--wrap,avcodec_encode_audio2      \
6625                   -Wl,--wrap,avcodec_encode_video2      \
6626                   -Wl,--wrap,avcodec_encode_subtitle    \
6627                   -Wl,--wrap,avcodec_send_packet        \
6628                   -Wl,--wrap,avcodec_receive_packet     \
6629                   -Wl,--wrap,avcodec_send_frame         \
6630                   -Wl,--wrap,avcodec_receive_frame      \
6631                   -Wl,--wrap,swr_convert                \
6632                   -Wl,--wrap,avresample_convert         \
6633                   -Wl,--wrap,sws_scale ||
6634     disable xmm_clobber_test
6635
6636 check_ld "cc" proper_dce <<EOF
6637 extern const int array[512];
6638 static inline int func(void) { return array[0]; }
6639 int main(void) { return 0; }
6640 EOF
6641
6642 if enabled proper_dce; then
6643     echo "X { local: *; };" > $TMPV
6644     if test_ldflags -Wl,${version_script},$TMPV; then
6645         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6646         quotes='""'
6647         test_cc <<EOF && enable symver_asm_label
6648 void ff_foo(void) __asm__ ("av_foo@VERSION");
6649 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6650 EOF
6651         test_cc <<EOF && enable symver_gnu_asm
6652 __asm__(".symver ff_foo,av_foo@VERSION");
6653 void ff_foo(void) {}
6654 EOF
6655     fi
6656 fi
6657
6658 if [ -z "$optflags" ]; then
6659     if enabled small; then
6660         optflags=$cflags_size
6661     elif enabled optimizations; then
6662         optflags=$cflags_speed
6663     else
6664         optflags=$cflags_noopt
6665     fi
6666 fi
6667
6668 if [ -z "$nvccflags" ]; then
6669     nvccflags=$nvccflags_default
6670 fi
6671
6672 if enabled x86_64 || enabled ppc64 || enabled aarch64; then
6673     nvccflags="$nvccflags -m64"
6674 else
6675     nvccflags="$nvccflags -m32"
6676 fi
6677
6678 check_optflags(){
6679     check_cflags "$@"
6680     enabled lto && check_ldflags "$@"
6681 }
6682
6683 check_optflags $optflags
6684 check_optflags -fno-math-errno
6685 check_optflags -fno-signed-zeros
6686
6687 if enabled lto; then
6688     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6689     check_cflags  -flto
6690     check_ldflags -flto $cpuflags
6691     disable inline_asm_direct_symbol_refs
6692 fi
6693
6694 enabled ftrapv && check_cflags -ftrapv
6695
6696 test_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6697 int x;
6698 EOF
6699
6700
6701 if enabled icc; then
6702     # Just warnings, no remarks
6703     check_cflags -w1
6704     # -wd: Disable following warnings
6705     # 144, 167, 556: -Wno-pointer-sign
6706     # 188: enumerated type mixed with another type
6707     # 1292: attribute "foo" ignored
6708     # 1419: external declaration in primary source file
6709     # 10006: ignoring unknown option -fno-signed-zeros
6710     # 10148: ignoring unknown option -Wno-parentheses
6711     # 10156: ignoring option '-W'; no argument required
6712     # 13200: No EMMS instruction before call to function
6713     # 13203: No EMMS instruction before return from function
6714     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6715     # 11030: Warning unknown option --as-needed
6716     # 10156: ignoring option '-export'; no argument required
6717     check_ldflags -wd10156,11030
6718     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6719     enable ebp_available
6720     # The test above does not test linking
6721     enabled lto && disable symver_asm_label
6722     if enabled x86_32; then
6723         icc_version=$($cc -dumpversion)
6724         test ${icc_version%%.*} -ge 11 &&
6725             check_cflags -falign-stack=maintain-16-byte ||
6726             disable aligned_stack
6727     fi
6728 elif enabled gcc; then
6729     check_optflags -fno-tree-vectorize
6730     check_cflags -Werror=format-security
6731     check_cflags -Werror=implicit-function-declaration
6732     check_cflags -Werror=missing-prototypes
6733     check_cflags -Werror=return-type
6734     check_cflags -Werror=vla
6735     check_cflags -Wformat
6736     check_cflags -fdiagnostics-color=auto
6737     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6738     if enabled x86_32; then
6739         case $target_os in
6740         *bsd*)
6741             # BSDs don't guarantee a 16 byte aligned stack, but we can
6742             # request GCC to try to maintain 16 byte alignment throughout
6743             # function calls. Library entry points that might call assembly
6744             # functions align the stack. (The parameter means 2^4 bytes.)
6745             check_cflags -mpreferred-stack-boundary=4
6746             ;;
6747         esac
6748     fi
6749 elif enabled llvm_gcc; then
6750     check_cflags -mllvm -stack-alignment=16
6751 elif enabled clang; then
6752     if enabled x86_32; then
6753         # Clang doesn't support maintaining alignment without assuming the
6754         # same alignment in every function. If 16 byte alignment would be
6755         # enabled, one would also have to either add attribute_align_arg on
6756         # every single entry point into the libraries or enable -mstackrealign
6757         # (doing stack realignment in every single function).
6758         case $target_os in
6759         mingw32|win32|*bsd*)
6760             disable aligned_stack
6761             ;;
6762         *)
6763             check_cflags -mllvm -stack-alignment=16
6764             check_cflags -mstack-alignment=16
6765             ;;
6766         esac
6767     else
6768         check_cflags -mllvm -stack-alignment=16
6769         check_cflags -mstack-alignment=16
6770     fi
6771     check_cflags -Qunused-arguments
6772     check_cflags -Werror=implicit-function-declaration
6773     check_cflags -Werror=missing-prototypes
6774     check_cflags -Werror=return-type
6775 elif enabled cparser; then
6776     add_cflags -Wno-missing-variable-declarations
6777     add_cflags -Wno-empty-statement
6778 elif enabled armcc; then
6779     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6780     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6781     # 2523: use of inline assembly is deprecated
6782     add_cflags -W${armcc_opt},--diag_suppress=2523
6783     add_cflags -W${armcc_opt},--diag_suppress=1207
6784     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6785     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6786     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6787     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6788 elif enabled pathscale; then
6789     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6790     disable inline_asm
6791 elif enabled_any msvc icl; then
6792     enabled x86_32 && disable aligned_stack
6793     enabled_all x86_32 debug && add_cflags -Oy-
6794     enabled debug && add_ldflags -debug
6795     enable pragma_deprecated
6796     if enabled icl; then
6797         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6798         # (correctly) on icl 13.x.
6799         test_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6800             add_cflags -Qansi-alias
6801         # Some inline asm is not compilable in debug
6802         if enabled debug; then
6803             disable ebp_available
6804             disable ebx_available
6805         fi
6806     fi
6807     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6808     check_cpp_condition log2 crtversion.h "_VC_CRT_MAJOR_VERSION >= 12"
6809     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6810     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6811     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6812     # MSVC 2013 and newer can handle it fine.
6813     # If this declspec fails, force including stdlib.h before the restrict redefinition
6814     # happens in config.h.
6815     if [ $restrict_keyword != restrict ]; then
6816         test_cc <<EOF || add_cflags -FIstdlib.h
6817 __declspec($restrict_keyword) void *foo(int);
6818 EOF
6819     fi
6820     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6821     # Issue has been fixed in MSVC v19.00.24218.
6822     test_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6823         check_cflags -d2SSAOptimizer-
6824     # enable utf-8 source processing on VS2015 U2 and newer
6825     test_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6826         add_cflags -utf-8
6827 fi
6828
6829 for pfx in "" host_; do
6830     varname=${pfx%_}cc_type
6831     eval "type=\$$varname"
6832     if [ "$type" = "msvc" ]; then
6833         test_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6834 static inline int foo(int a) { return a; }
6835 EOF
6836     fi
6837 done
6838
6839 case $as_type in
6840     clang)
6841         add_asflags -Qunused-arguments
6842     ;;
6843 esac
6844
6845 case $ld_type in
6846     clang)
6847         check_ldflags -Qunused-arguments
6848     ;;
6849 esac
6850
6851 enable frame_thread_encoder
6852
6853 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6854
6855 check_deps $CONFIG_LIST       \
6856            $CONFIG_EXTRA      \
6857            $HAVE_LIST         \
6858            $ALL_COMPONENTS    \
6859
6860 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"
6861 enabled avresample && warn "Building with deprecated library libavresample"
6862
6863 case $target_os in
6864 haiku)
6865     disable memalign
6866     disable posix_memalign
6867     ;;
6868 *-dos|freedos|opendos)
6869     if test_cpp_condition sys/version.h "defined(__DJGPP__) && __DJGPP__ == 2 && __DJGPP_MINOR__ == 5"; then
6870         disable memalign
6871     fi
6872     ;;
6873 esac
6874
6875 flatten_extralibs(){
6876     nested_entries=
6877     list_name=$1
6878     eval list=\$${1}
6879     for entry in $list; do
6880         entry_copy=$entry
6881         resolve entry_copy
6882         flat_entries=
6883         for e in $entry_copy; do
6884             case $e in
6885                 *_extralibs) nested_entries="$nested_entries$e ";;
6886                           *) flat_entries="$flat_entries$e ";;
6887             esac
6888         done
6889         eval $entry="\$flat_entries"
6890     done
6891     append $list_name "$nested_entries"
6892
6893     resolve nested_entries
6894     if test -n "$(filter '*_extralibs' $nested_entries)"; then
6895         flatten_extralibs $list_name
6896     fi
6897 }
6898
6899 flatten_extralibs_wrapper(){
6900     list_name=$1
6901     flatten_extralibs $list_name
6902     unique $list_name
6903     resolve $list_name
6904     eval $list_name=\$\(\$ldflags_filter \$$list_name\)
6905     eval printf \''%s'\' \""\$$list_name"\"
6906 }
6907
6908 for linkunit in $LIBRARY_LIST; do
6909     unset current_extralibs
6910     eval components=\$$(toupper ${linkunit})_COMPONENTS_LIST
6911     for comp in ${components}; do
6912         enabled $comp || continue
6913         comp_extralibs="${comp}_extralibs"
6914         append current_extralibs $comp_extralibs
6915     done
6916     eval prepend ${linkunit}_extralibs $current_extralibs
6917 done
6918
6919 for linkunit in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
6920     eval ${linkunit}_extralibs=\$\(flatten_extralibs_wrapper ${linkunit}_extralibs\)
6921 done
6922
6923 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6924
6925 for thread in $THREADS_LIST; do
6926     if enabled $thread; then
6927         test -n "$thread_type" &&
6928             die "ERROR: Only one thread type must be selected." ||
6929             thread_type="$thread"
6930     fi
6931 done
6932
6933 if disabled stdatomic; then
6934     if enabled atomics_gcc; then
6935         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
6936     elif enabled atomics_win32; then
6937         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
6938     elif enabled atomics_suncc; then
6939         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
6940     elif enabled pthreads; then
6941         add_compat atomics/pthread/stdatomic.o
6942         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
6943     else
6944         enabled threads && die "Threading is enabled, but no atomics are available"
6945         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
6946     fi
6947 fi
6948
6949 # Check if requested libraries were found.
6950 for lib in $AUTODETECT_LIBS; do
6951     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
6952 done
6953
6954 enabled zlib && add_cppflags -DZLIB_CONST
6955
6956 # conditional library dependencies, in any order
6957 enabled afftdn_filter       && prepend avfilter_deps "avcodec"
6958 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6959 enabled afir_filter         && prepend avfilter_deps "avcodec"
6960 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6961 enabled aresample_filter    && prepend avfilter_deps "swresample"
6962 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6963 enabled bm3d_filter         && prepend avfilter_deps "avcodec"
6964 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6965 enabled convolve_filter     && prepend avfilter_deps "avcodec"
6966 enabled deconvolve_filter   && prepend avfilter_deps "avcodec"
6967 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6968 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6969 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6970 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6971 enabled firequalizer_filter && prepend avfilter_deps "avcodec"
6972 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6973 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6974 enabled pan_filter          && prepend avfilter_deps "swresample"
6975 enabled pp_filter           && prepend avfilter_deps "postproc"
6976 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6977 enabled resample_filter && prepend avfilter_deps "avresample"
6978 enabled sab_filter          && prepend avfilter_deps "swscale"
6979 enabled scale_filter    && prepend avfilter_deps "swscale"
6980 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6981 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6982 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6983 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6984 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6985 enabled signature_filter    && prepend avfilter_deps "avcodec avformat"
6986 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6987 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6988 enabled spp_filter          && prepend avfilter_deps "avcodec"
6989 enabled sr_filter           && prepend avfilter_deps "avformat swscale"
6990 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6991 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6992 enabled zoompan_filter      && prepend avfilter_deps "swscale"
6993
6994 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6995
6996 #FIXME
6997 enabled_any sdl2_outdev opengl_outdev && enabled sdl2 &&
6998     add_cflags $(filter_out '-Dmain=SDL_main' $sdl2_cflags)
6999
7000 enabled opus_decoder    && prepend avcodec_deps "swresample"
7001
7002 # reorder the items at var $1 to align with the items order at var $2 .
7003 # die if an item at $1 is not at $2 .
7004 reorder_by(){
7005     eval rb_in=\$$1
7006     eval rb_ordered=\$$2
7007
7008     for rb in $rb_in; do
7009         is_in $rb $rb_ordered || die "$rb at \$$1 is not at \$$2"
7010     done
7011
7012     rb_out=
7013     for rb in $rb_ordered; do
7014         is_in $rb $rb_in && rb_out="$rb_out$rb "
7015     done
7016     eval $1=\$rb_out
7017 }
7018
7019 # deps-expand fflib $1:  N x {append all expanded deps; unique}
7020 # within a set of N items, N expansions are enough to expose a cycle.
7021 expand_deps(){
7022     unique ${1}_deps  # required for the early break test.
7023     for dummy in $LIBRARY_LIST; do  # N iteratios
7024         eval deps=\$${1}_deps
7025         append ${1}_deps $(map 'eval echo \$${v}_deps' $deps)
7026         unique ${1}_deps
7027         eval '[ ${#deps} = ${#'${1}_deps'} ]' && break  # doesn't expand anymore
7028     done
7029
7030     eval is_in $1 \$${1}_deps && die "Dependency cycle at ${1}_deps"
7031     reorder_by ${1}_deps LIBRARY_LIST  # linking order is expected later
7032 }
7033
7034 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
7035 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
7036
7037 map 'expand_deps $v' $LIBRARY_LIST
7038
7039 if test "$quiet" != "yes"; then
7040
7041 echo "install prefix            $prefix"
7042 echo "source path               $source_path"
7043 echo "C compiler                $cc"
7044 echo "C library                 $libc_type"
7045 if test "$host_cc" != "$cc"; then
7046     echo "host C compiler           $host_cc"
7047     echo "host C library            $host_libc_type"
7048 fi
7049 echo "ARCH                      $arch ($cpu)"
7050 if test "$build_suffix" != ""; then
7051     echo "build suffix              $build_suffix"
7052 fi
7053 if test "$progs_suffix" != ""; then
7054     echo "progs suffix              $progs_suffix"
7055 fi
7056 if test "$extra_version" != ""; then
7057     echo "version string suffix     $extra_version"
7058 fi
7059 echo "big-endian                ${bigendian-no}"
7060 echo "runtime cpu detection     ${runtime_cpudetect-no}"
7061 if enabled x86; then
7062     echo "standalone assembly       ${x86asm-no}"
7063     echo "x86 assembler             ${x86asmexe}"
7064     echo "MMX enabled               ${mmx-no}"
7065     echo "MMXEXT enabled            ${mmxext-no}"
7066     echo "3DNow! enabled            ${amd3dnow-no}"
7067     echo "3DNow! extended enabled   ${amd3dnowext-no}"
7068     echo "SSE enabled               ${sse-no}"
7069     echo "SSSE3 enabled             ${ssse3-no}"
7070     echo "AESNI enabled             ${aesni-no}"
7071     echo "AVX enabled               ${avx-no}"
7072     echo "AVX2 enabled              ${avx2-no}"
7073     echo "AVX-512 enabled           ${avx512-no}"
7074     echo "XOP enabled               ${xop-no}"
7075     echo "FMA3 enabled              ${fma3-no}"
7076     echo "FMA4 enabled              ${fma4-no}"
7077     echo "i686 features enabled     ${i686-no}"
7078     echo "CMOV is fast              ${fast_cmov-no}"
7079     echo "EBX available             ${ebx_available-no}"
7080     echo "EBP available             ${ebp_available-no}"
7081 fi
7082 if enabled aarch64; then
7083     echo "NEON enabled              ${neon-no}"
7084     echo "VFP enabled               ${vfp-no}"
7085 fi
7086 if enabled arm; then
7087     echo "ARMv5TE enabled           ${armv5te-no}"
7088     echo "ARMv6 enabled             ${armv6-no}"
7089     echo "ARMv6T2 enabled           ${armv6t2-no}"
7090     echo "VFP enabled               ${vfp-no}"
7091     echo "NEON enabled              ${neon-no}"
7092     echo "THUMB enabled             ${thumb-no}"
7093 fi
7094 if enabled mips; then
7095     echo "MIPS FPU enabled          ${mipsfpu-no}"
7096     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
7097     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
7098     echo "MIPS MSA enabled          ${msa-no}"
7099     echo "LOONGSON MMI enabled      ${mmi-no}"
7100 fi
7101 if enabled ppc; then
7102     echo "AltiVec enabled           ${altivec-no}"
7103     echo "VSX enabled               ${vsx-no}"
7104     echo "POWER8 enabled            ${power8-no}"
7105     echo "PPC 4xx optimizations     ${ppc4xx-no}"
7106     echo "dcbzl available           ${dcbzl-no}"
7107 fi
7108 echo "debug symbols             ${debug-no}"
7109 echo "strip symbols             ${stripping-no}"
7110 echo "optimize for size         ${small-no}"
7111 echo "optimizations             ${optimizations-no}"
7112 echo "static                    ${static-no}"
7113 echo "shared                    ${shared-no}"
7114 echo "postprocessing support    ${postproc-no}"
7115 echo "network support           ${network-no}"
7116 echo "threading support         ${thread_type-no}"
7117 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
7118 echo "texi2html enabled         ${texi2html-no}"
7119 echo "perl enabled              ${perl-no}"
7120 echo "pod2man enabled           ${pod2man-no}"
7121 echo "makeinfo enabled          ${makeinfo-no}"
7122 echo "makeinfo supports HTML    ${makeinfo_html-no}"
7123 test -n "$random_seed" &&
7124     echo "random seed               ${random_seed}"
7125 echo
7126
7127 echo "External libraries:"
7128 print_enabled '' $EXTERNAL_LIBRARY_LIST $EXTERNAL_AUTODETECT_LIBRARY_LIST | print_in_columns
7129 echo
7130
7131 echo "External libraries providing hardware acceleration:"
7132 print_enabled '' $HWACCEL_LIBRARY_LIST $HWACCEL_AUTODETECT_LIBRARY_LIST | print_in_columns
7133 echo
7134
7135 echo "Libraries:"
7136 print_enabled '' $LIBRARY_LIST | print_in_columns
7137 echo
7138
7139 echo "Programs:"
7140 print_enabled '' $PROGRAM_LIST | print_in_columns
7141 echo
7142
7143 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
7144     echo "Enabled ${type}s:"
7145     eval list=\$$(toupper $type)_LIST
7146     print_enabled '_*' $list | print_in_columns
7147     echo
7148 done
7149
7150 if test -n "$ignore_tests"; then
7151     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
7152     echo "Ignored FATE tests:"
7153     echo $ignore_tests | print_in_columns
7154     echo
7155 fi
7156
7157 echo "License: $license"
7158
7159 fi # test "$quiet" != "yes"
7160
7161 if test -n "$WARN_IF_GETS_DISABLED_LIST"; then
7162     for cfg in $WARN_IF_GETS_DISABLED_LIST; do
7163         if disabled $cfg; then
7164             varname=${cfg}_disable_reason
7165             eval "warn \"Disabled $cfg because \$$varname\""
7166         fi
7167     done
7168 fi
7169
7170 if test -n "$WARNINGS"; then
7171     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
7172     enabled fatal_warnings && exit 1
7173 fi
7174
7175 test -e Makefile || echo "include $source_path/Makefile" > Makefile
7176
7177 esc(){
7178     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
7179 }
7180
7181 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" > ffbuild/config.fate
7182
7183 enabled stripping || strip="echo skipping strip"
7184 enabled stripping || striptype=""
7185
7186 config_files="$TMPH ffbuild/config.mak doc/config.texi"
7187
7188 cat > ffbuild/config.mak <<EOF
7189 # Automatically generated by configure - do not modify!
7190 ifndef FFMPEG_CONFIG_MAK
7191 FFMPEG_CONFIG_MAK=1
7192 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
7193 prefix=$prefix
7194 LIBDIR=\$(DESTDIR)$libdir
7195 SHLIBDIR=\$(DESTDIR)$shlibdir
7196 INCDIR=\$(DESTDIR)$incdir
7197 BINDIR=\$(DESTDIR)$bindir
7198 DATADIR=\$(DESTDIR)$datadir
7199 DOCDIR=\$(DESTDIR)$docdir
7200 MANDIR=\$(DESTDIR)$mandir
7201 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
7202 INSTALL_NAME_DIR=$install_name_dir
7203 SRC_PATH=$source_path
7204 SRC_LINK=$source_link
7205 ifndef MAIN_MAKEFILE
7206 SRC_PATH:=\$(SRC_PATH:.%=..%)
7207 endif
7208 CC_IDENT=$cc_ident
7209 ARCH=$arch
7210 INTRINSICS=$intrinsics
7211 EXTERN_PREFIX=$extern_prefix
7212 CC=$cc
7213 CXX=$cxx
7214 AS=$as
7215 OBJCC=$objcc
7216 LD=$ld
7217 DEPCC=$dep_cc
7218 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
7219 DEPAS=$as
7220 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
7221 X86ASM=$x86asmexe
7222 DEPX86ASM=$x86asmexe
7223 DEPX86ASMFLAGS=\$(X86ASMFLAGS)
7224 AR=$ar
7225 ARFLAGS=$arflags
7226 AR_O=$ar_o
7227 AR_CMD=$ar
7228 NM_CMD=$nm
7229 RANLIB=$ranlib
7230 STRIP=$strip
7231 STRIPTYPE=$striptype
7232 NVCC=$nvcc
7233 CP=cp -p
7234 LN_S=$ln_s
7235 CPPFLAGS=$CPPFLAGS
7236 CFLAGS=$CFLAGS
7237 CXXFLAGS=$CXXFLAGS
7238 OBJCFLAGS=$OBJCFLAGS
7239 ASFLAGS=$ASFLAGS
7240 NVCCFLAGS=$nvccflags
7241 AS_C=$AS_C
7242 AS_O=$AS_O
7243 OBJCC_C=$OBJCC_C
7244 OBJCC_E=$OBJCC_E
7245 OBJCC_O=$OBJCC_O
7246 CC_C=$CC_C
7247 CC_E=$CC_E
7248 CC_O=$CC_O
7249 CXX_C=$CXX_C
7250 CXX_O=$CXX_O
7251 NVCC_C=$NVCC_C
7252 NVCC_O=$NVCC_O
7253 LD_O=$LD_O
7254 X86ASM_O=$X86ASM_O
7255 LD_LIB=$LD_LIB
7256 LD_PATH=$LD_PATH
7257 DLLTOOL=$dlltool
7258 WINDRES=$windres
7259 DEPWINDRES=$dep_cc
7260 DOXYGEN=$doxygen
7261 LDFLAGS=$LDFLAGS
7262 LDEXEFLAGS=$LDEXEFLAGS
7263 LDSOFLAGS=$LDSOFLAGS
7264 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
7265 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
7266 X86ASMFLAGS=$X86ASMFLAGS
7267 BUILDSUF=$build_suffix
7268 PROGSSUF=$progs_suffix
7269 FULLNAME=$FULLNAME
7270 LIBPREF=$LIBPREF
7271 LIBSUF=$LIBSUF
7272 LIBNAME=$LIBNAME
7273 SLIBPREF=$SLIBPREF
7274 SLIBSUF=$SLIBSUF
7275 EXESUF=$EXESUF
7276 EXTRA_VERSION=$extra_version
7277 CCDEP=$CCDEP
7278 CXXDEP=$CXXDEP
7279 CCDEP_FLAGS=$CCDEP_FLAGS
7280 ASDEP=$ASDEP
7281 ASDEP_FLAGS=$ASDEP_FLAGS
7282 X86ASMDEP=$X86ASMDEP
7283 X86ASMDEP_FLAGS=$X86ASMDEP_FLAGS
7284 CC_DEPFLAGS=$CC_DEPFLAGS
7285 AS_DEPFLAGS=$AS_DEPFLAGS
7286 X86ASM_DEPFLAGS=$X86ASM_DEPFLAGS
7287 HOSTCC=$host_cc
7288 HOSTLD=$host_ld
7289 HOSTCFLAGS=$host_cflags
7290 HOSTCPPFLAGS=$host_cppflags
7291 HOSTEXESUF=$HOSTEXESUF
7292 HOSTLDFLAGS=$host_ldflags
7293 HOSTEXTRALIBS=$host_extralibs
7294 DEPHOSTCC=$host_cc
7295 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
7296 HOSTCCDEP=$HOSTCCDEP
7297 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
7298 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
7299 HOSTCC_C=$HOSTCC_C
7300 HOSTCC_O=$HOSTCC_O
7301 HOSTLD_O=$HOSTLD_O
7302 TARGET_EXEC=$target_exec $target_exec_args
7303 TARGET_PATH=$target_path
7304 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
7305 CFLAGS-ffplay=${sdl2_cflags}
7306 CFLAGS_HEADERS=$CFLAGS_HEADERS
7307 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
7308 EXTRALIBS=$extralibs
7309 COMPAT_OBJS=$compat_objs
7310 INSTALL=$install
7311 LIBTARGET=${LIBTARGET}
7312 SLIBNAME=${SLIBNAME}
7313 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
7314 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
7315 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
7316 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
7317 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
7318 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
7319 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
7320 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
7321 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
7322 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
7323 NOREDZONE_FLAGS=$noredzone_flags
7324 LIBFUZZER_PATH=$libfuzzer_path
7325 IGNORE_TESTS=$ignore_tests
7326 EOF
7327
7328 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> ffbuild/config.mak' $LIBRARY_LIST
7329
7330 for entry in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
7331     eval echo "EXTRALIBS-${entry}=\$${entry}_extralibs" >> ffbuild/config.mak
7332 done
7333
7334 cat > $TMPH <<EOF
7335 /* Automatically generated by configure - do not modify! */
7336 #ifndef FFMPEG_CONFIG_H
7337 #define FFMPEG_CONFIG_H
7338 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
7339 #define FFMPEG_LICENSE "$(c_escape $license)"
7340 #define CONFIG_THIS_YEAR 2019
7341 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
7342 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
7343 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
7344 #define av_restrict $restrict_keyword
7345 #define EXTERN_PREFIX "${extern_prefix}"
7346 #define EXTERN_ASM ${extern_prefix}
7347 #define BUILDSUF "$build_suffix"
7348 #define SLIBSUF "$SLIBSUF"
7349 #define HAVE_MMX2 HAVE_MMXEXT
7350 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
7351 EOF
7352
7353 test -n "$assert_level" &&
7354     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
7355
7356 test -n "$malloc_prefix" &&
7357     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
7358
7359 if enabled x86asm; then
7360     append config_files $TMPASM
7361     cat > $TMPASM <<EOF
7362 ; Automatically generated by configure - do not modify!
7363 EOF
7364 fi
7365
7366 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
7367
7368
7369 mkdir -p doc
7370 mkdir -p tests
7371 mkdir -p tests/api
7372 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
7373
7374 print_config ARCH_   "$config_files" $ARCH_LIST
7375 print_config HAVE_   "$config_files" $HAVE_LIST
7376 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
7377                                      $CONFIG_EXTRA      \
7378                                      $ALL_COMPONENTS    \
7379
7380 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
7381 echo "endif # FFMPEG_CONFIG_MAK" >> ffbuild/config.mak
7382
7383 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
7384 cp_if_changed $TMPH config.h
7385 touch ffbuild/.config
7386
7387 enabled x86asm && cp_if_changed $TMPASM config.asm
7388
7389 cat > $TMPH <<EOF
7390 /* Generated by ffmpeg configure */
7391 #ifndef AVUTIL_AVCONFIG_H
7392 #define AVUTIL_AVCONFIG_H
7393 EOF
7394
7395 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
7396
7397 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
7398
7399 cp_if_changed $TMPH libavutil/avconfig.h
7400
7401 # full_filter_name_foo=vf_foo
7402 # full_filter_name_bar=asrc_bar
7403 # ...
7404 eval "$(sed -n "s/^extern AVFilter ff_\([avfsinkrc]\{2,5\}\)_\(.*\);/full_filter_name_\2=\1_\2/p" $source_path/libavfilter/allfilters.c)"
7405
7406 # generate the lists of enabled components
7407 print_enabled_components(){
7408     file=$1
7409     struct_name=$2
7410     name=$3
7411     shift 3
7412     echo "static const $struct_name * const $name[] = {" > $TMPH
7413     for c in $*; do
7414         if enabled $c; then
7415             case $name in
7416                 filter_list)
7417                     eval c=\$full_filter_name_${c%_filter}
7418                 ;;
7419                 indev_list)
7420                     c=${c%_indev}_demuxer
7421                 ;;
7422                 outdev_list)
7423                     c=${c%_outdev}_muxer
7424                 ;;
7425             esac
7426             printf "    &ff_%s,\n" $c >> $TMPH
7427         fi
7428     done
7429     if [ "$name" = "filter_list" ]; then
7430         for c in asrc_abuffer vsrc_buffer asink_abuffer vsink_buffer; do
7431             printf "    &ff_%s,\n" $c >> $TMPH
7432         done
7433     fi
7434     echo "    NULL };" >> $TMPH
7435     cp_if_changed $TMPH $file
7436 }
7437
7438 print_enabled_components libavfilter/filter_list.c AVFilter filter_list $FILTER_LIST
7439 print_enabled_components libavcodec/codec_list.c AVCodec codec_list $CODEC_LIST
7440 print_enabled_components libavcodec/parser_list.c AVCodecParser parser_list $PARSER_LIST
7441 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
7442 print_enabled_components libavformat/demuxer_list.c AVInputFormat demuxer_list $DEMUXER_LIST
7443 print_enabled_components libavformat/muxer_list.c AVOutputFormat muxer_list $MUXER_LIST
7444 print_enabled_components libavdevice/indev_list.c AVInputFormat indev_list $INDEV_LIST
7445 print_enabled_components libavdevice/outdev_list.c AVOutputFormat outdev_list $OUTDEV_LIST
7446 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
7447
7448 # Settings for pkg-config files
7449
7450 cat > $TMPH <<EOF
7451 # Automatically generated by configure - do not modify!
7452 shared=$shared
7453 build_suffix=$build_suffix
7454 prefix=$prefix
7455 libdir=$libdir
7456 incdir=$incdir
7457 rpath=$(enabled rpath && echo "-Wl,-rpath,\${libdir}")
7458 source_path=${source_path}
7459 LIBPREF=${LIBPREF}
7460 LIBSUF=${LIBSUF}
7461 extralibs_avutil="$avutil_extralibs"
7462 extralibs_avcodec="$avcodec_extralibs"
7463 extralibs_avformat="$avformat_extralibs"
7464 extralibs_avdevice="$avdevice_extralibs"
7465 extralibs_avfilter="$avfilter_extralibs"
7466 extralibs_avresample="$avresample_extralibs"
7467 extralibs_postproc="$postproc_extralibs"
7468 extralibs_swscale="$swscale_extralibs"
7469 extralibs_swresample="$swresample_extralibs"
7470 EOF
7471
7472 for lib in $LIBRARY_LIST; do
7473     lib_deps="$(eval echo \$${lib}_deps)"
7474     echo ${lib}_deps=\"$lib_deps\" >> $TMPH
7475 done
7476
7477 cp_if_changed $TMPH ffbuild/config.sh