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-libass          enable libass subtitles rendering,
 222                            needed for subtitles and ass filter [no]
 223   --enable-libbluray       enable BluRay reading using libbluray [no]
 224   --enable-libbs2b         enable bs2b DSP library [no]
 225   --enable-libcaca         enable textual display using libcaca [no]
 226   --enable-libcelt         enable CELT decoding via libcelt [no]
 227   --enable-libcdio         enable audio CD grabbing with libcdio [no]
 228   --enable-libcodec2       enable codec2 en/decoding using libcodec2 [no]
 229   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 230                            and libraw1394 [no]
 231   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
 232   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
 233   --enable-libfontconfig   enable libfontconfig, useful for drawtext filter [no]
 234   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
 235   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
 236   --enable-libgme          enable Game Music Emu via libgme [no]
 237   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 238   --enable-libiec61883     enable iec61883 via libiec61883 [no]
 239   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 240   --enable-libjack         enable JACK audio sound server [no]
 241   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
 242   --enable-libmodplug      enable ModPlug via libmodplug [no]
 243   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 244   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 245   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 246   --enable-libopencv       enable video filtering via libopencv [no]
 247   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
 248   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 249   --enable-libopenmpt      enable decoding tracked files via libopenmpt [no]
 250   --enable-libopus         enable Opus de/encoding via libopus [no]
 251   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 252   --enable-librsvg         enable SVG rasterization via librsvg [no]
 253   --enable-librubberband   enable rubberband needed for rubberband filter [no]
 254   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 255   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 256   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
 257   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
 258   --enable-libsoxr         enable Include libsoxr resampling [no]
 259   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 260   --enable-libsrt          enable Haivision SRT protocol via libsrt [no]
 261   --enable-libssh          enable SFTP protocol via libssh [no]
 262   --enable-libtensorflow   enable TensorFlow as a DNN module backend
 263                            for DNN based filters like srcnn [no]
 264   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
 265   --enable-libtheora       enable Theora encoding via libtheora [no]
 266   --enable-libtls          enable LibreSSL (via libtls), needed for https support
 267                            if openssl, gnutls or mbedtls is not used [no]
 268   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 269   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 270   --enable-libvidstab      enable video stabilization using vid.stab [no]
 271   --enable-libvmaf         enable vmaf filter via libvmaf [no]
 272   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 273   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 274                            native implementation exists [no]
 275   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 276   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 277   --enable-libwebp         enable WebP encoding via libwebp [no]
 278   --enable-libx264         enable H.264 encoding via x264 [no]
 279   --enable-libx265         enable HEVC encoding via x265 [no]
 280   --enable-libxavs         enable AVS encoding via xavs [no]
 281   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
 282   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
 283   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
 284   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
 285   --enable-libxvid         enable Xvid encoding via xvidcore,
 286                            native MPEG-4/Xvid encoder exists [no]
 287   --enable-libxml2         enable XML parsing using the C library libxml2, needed
 288                            for dash demuxing support [no]
 289   --enable-libzimg         enable z.lib, needed for zscale filter [no]
 290   --enable-libzmq          enable message passing via libzmq [no]
 291   --enable-libzvbi         enable teletext support via libzvbi [no]
 292   --enable-lv2             enable LV2 audio filtering [no]
 293   --disable-lzma           disable lzma [autodetect]
 294   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
 295   --enable-libndi_newtek   enable Newteck NDI I/O support [no]
 296   --enable-mbedtls         enable mbedTLS, needed for https support
 297                            if openssl, gnutls or libtls is not used [no]
 298   --enable-mediacodec      enable Android MediaCodec support [no]
 299   --enable-libmysofa       enable libmysofa, needed for sofalizer filter [no]
 300   --enable-openal          enable OpenAL 1.1 capture support [no]
 301   --enable-opencl          enable OpenCL processing [no]
 302   --enable-opengl          enable OpenGL rendering [no]
 303   --enable-openssl         enable openssl, needed for https support
 304                            if gnutls, libtls or mbedtls is not used [no]
 305   --disable-sndio          disable sndio support [autodetect]
 306   --disable-schannel       disable SChannel SSP, needed for TLS support on
 307                            Windows if openssl and gnutls are not used [autodetect]
 308   --disable-sdl2           disable sdl2 [autodetect]
 309   --disable-securetransport disable Secure Transport, needed for TLS support
 310                            on OSX if openssl and gnutls are not used [autodetect]
 311   --enable-vapoursynth     enable VapourSynth demuxer [no]
 312   --disable-xlib           disable xlib [autodetect]
 313   --disable-zlib           disable zlib [autodetect]
 314
 315   The following libraries provide various hardware acceleration features:
 316   --disable-amf            disable AMF video encoding code [autodetect]
 317   --disable-audiotoolbox   disable Apple AudioToolbox code [autodetect]
 318   --enable-cuda-sdk        enable CUDA features that require the CUDA SDK [no]
 319   --disable-cuvid          disable Nvidia CUVID support [autodetect]
 320   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
 321   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
 322   --disable-ffnvcodec      disable dynamically linked Nvidia code [autodetect]
 323   --enable-libdrm          enable DRM code (Linux) [no]
 324   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
 325   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
 326   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
 327   --disable-nvdec          disable Nvidia video decoding acceleration (via hwaccel) [autodetect]
 328   --disable-nvenc          disable Nvidia video encoding code [autodetect]
 329   --enable-omx             enable OpenMAX IL code [no]
 330   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
 331   --enable-rkmpp           enable Rockchip Media Process Platform code [no]
 332   --disable-v4l2-m2m       disable V4L2 mem2mem code [autodetect]
 333   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
 334   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
 335   --disable-videotoolbox   disable VideoToolbox code [autodetect]
 336
 337 Toolchain options:
 338   --arch=ARCH              select architecture [$arch]
 339   --cpu=CPU                select the minimum required CPU (affects
 340                            instruction selection, may crash on older CPUs)
 341   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 342   --progs-suffix=SUFFIX    program name suffix []
 343   --enable-cross-compile   assume a cross-compiler is used
 344   --sysroot=PATH           root of cross-build tree
 345   --sysinclude=PATH        location of cross-build system headers
 346   --target-os=OS           compiler targets OS [$target_os]
 347   --target-exec=CMD        command to run executables on target
 348   --target-path=DIR        path to view of build directory on target
 349   --target-samples=DIR     path to samples directory on target
 350   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 351   --toolchain=NAME         set tool defaults according to NAME
 352                            (gcc-asan, clang-asan, gcc-msan, clang-msan,
 353                            gcc-tsan, clang-tsan, gcc-usan, clang-usan,
 354                            valgrind-massif, valgrind-memcheck,
 355                            msvc, icl, gcov, llvm-cov, hardened)
 356   --nm=NM                  use nm tool NM [$nm_default]
 357   --ar=AR                  use archive tool AR [$ar_default]
 358   --as=AS                  use assembler AS [$as_default]
 359   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
 360   --strip=STRIP            use strip tool STRIP [$strip_default]
 361   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 362   --x86asmexe=EXE          use nasm-compatible assembler EXE [$x86asmexe_default]
 363   --cc=CC                  use C compiler CC [$cc_default]
 364   --cxx=CXX                use C compiler CXX [$cxx_default]
 365   --objcc=OCC              use ObjC compiler OCC [$cc_default]
 366   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 367   --nvcc=NVCC              use Nvidia CUDA compiler NVCC [$nvcc_default]
 368   --ld=LD                  use linker LD [$ld_default]
 369   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 370   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 371   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 372   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
 373   --host-cc=HOSTCC         use host C compiler HOSTCC
 374   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 375   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 376   --host-ld=HOSTLD         use host linker HOSTLD
 377   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 378   --host-libs=HLIBS        use libs HLIBS when linking for host
 379   --host-os=OS             compiler host OS [$target_os]
 380   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 381   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 382   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
 383   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 384   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 385   --extra-ldsoflags=ELDFLAGS add ELDFLAGS to LDSOFLAGS [$LDSOFLAGS]
 386   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 387   --extra-version=STRING   version string suffix []
 388   --optflags=OPTFLAGS      override optimization-related compiler flags
 389   --nvccflags=NVCCFLAGS    override nvcc flags [$nvccflags_default]
 390   --build-suffix=SUFFIX    library name suffix []
 391   --enable-pic             build position-independent code
 392   --enable-thumb           compile for Thumb instruction set
 393   --enable-lto             use link-time optimization
 394   --env="ENV=override"     override the environment variables
 395
 396 Advanced options (experts only):
 397   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 398   --custom-allocator=NAME  use a supported custom allocator
 399   --disable-symver         disable symbol versioning
 400   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 401   --disable-safe-bitstream-reader
 402                            disable buffer boundary checking in bitreaders
 403                            (faster, but may crash)
 404   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
 405
 406 Optimization options (experts only):
 407   --disable-asm            disable all assembly optimizations
 408   --disable-altivec        disable AltiVec optimizations
 409   --disable-vsx            disable VSX optimizations
 410   --disable-power8         disable POWER8 optimizations
 411   --disable-amd3dnow       disable 3DNow! optimizations
 412   --disable-amd3dnowext    disable 3DNow! extended optimizations
 413   --disable-mmx            disable MMX optimizations
 414   --disable-mmxext         disable MMXEXT optimizations
 415   --disable-sse            disable SSE optimizations
 416   --disable-sse2           disable SSE2 optimizations
 417   --disable-sse3           disable SSE3 optimizations
 418   --disable-ssse3          disable SSSE3 optimizations
 419   --disable-sse4           disable SSE4 optimizations
 420   --disable-sse42          disable SSE4.2 optimizations
 421   --disable-avx            disable AVX optimizations
 422   --disable-xop            disable XOP optimizations
 423   --disable-fma3           disable FMA3 optimizations
 424   --disable-fma4           disable FMA4 optimizations
 425   --disable-avx2           disable AVX2 optimizations
 426   --disable-avx512         disable AVX-512 optimizations
 427   --disable-aesni          disable AESNI optimizations
 428   --disable-armv5te        disable armv5te optimizations
 429   --disable-armv6          disable armv6 optimizations
 430   --disable-armv6t2        disable armv6t2 optimizations
 431   --disable-vfp            disable VFP optimizations
 432   --disable-neon           disable NEON optimizations
 433   --disable-inline-asm     disable use of inline assembly
 434   --disable-x86asm         disable use of standalone x86 assembly
 435   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
 436   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 437   --disable-msa            disable MSA optimizations
 438   --disable-mipsfpu        disable floating point MIPS optimizations
 439   --disable-mmi            disable Loongson SIMD optimizations
 440   --disable-fast-unaligned consider unaligned accesses slow
 441
 442 Developer options (useful when working on FFmpeg itself):
 443   --disable-debug          disable debugging symbols
 444   --enable-debug=LEVEL     set the debug level [$debuglevel]
 445   --disable-optimizations  disable compiler optimizations
 446   --enable-extra-warnings  enable more compiler warnings
 447   --disable-stripping      disable stripping of executables and shared libraries
 448   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 449                            2 causes a slowdown at runtime.
 450   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 451   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 452                            leaks and errors, using the specified valgrind binary.
 453                            Cannot be combined with --target-exec
 454   --enable-ftrapv          Trap arithmetic overflows
 455   --samples=PATH           location of test samples for FATE, if not set use
 456                            \$FATE_SAMPLES at make invocation time.
 457   --enable-neon-clobber-test check NEON registers for clobbering (should be
 458                            used only for debugging purposes)
 459   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 460                            should be used only for debugging purposes)
 461   --enable-random          randomly enable/disable components
 462   --disable-random
 463   --enable-random=LIST     randomly enable/disable specific components or
 464   --disable-random=LIST    component groups. LIST is a comma-separated list
 465                            of NAME[:PROB] entries where NAME is a component
 466                            (group) and PROB the probability associated with
 467                            NAME (default 0.5).
 468   --random-seed=VALUE      seed value for --enable/disable-random
 469   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 470                            (only applies to --disable-optimizations builds)
 471   --enable-osfuzz          Enable building fuzzer tool
 472   --libfuzzer=PATH         path to libfuzzer
 473   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
 474                            in the name) of tests whose result is ignored
 475   --enable-linux-perf      enable Linux Performance Monitor API
 476
 477 NOTE: Object files are built at the place where configure is launched.
 478 EOF
 479   exit 0
 480 }
 481
 482 if test -t 1 && which tput >/dev/null 2>&1; then
 483     ncolors=$(tput colors)
 484     if test -n "$ncolors" && test $ncolors -ge 8; then
 485         bold_color=$(tput bold)
 486         warn_color=$(tput setaf 3)
 487         error_color=$(tput setaf 1)
 488         reset_color=$(tput sgr0)
 489     fi
 490     # 72 used instead of 80 since that's the default of pr
 491     ncols=$(tput cols)
 492 fi
 493 : ${ncols:=72}
 494
 495 log(){
 496     echo "$@" >> $logfile
 497 }
 498
 499 log_file(){
 500     log BEGIN $1
 501     pr -n -t $1 >> $logfile
 502     log END $1
 503 }
 504
 505 warn(){
 506     log "WARNING: $*"
 507     WARNINGS="${WARNINGS}WARNING: $*\n"
 508 }
 509
 510 die(){
 511     log "$@"
 512     echo "$error_color$bold_color$@$reset_color"
 513     cat <<EOF
 514
 515 If you think configure made a mistake, make sure you are using the latest
 516 version from Git.  If the latest version fails, report the problem to the
 517 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 518 EOF
 519     if disabled logging; then
 520         cat <<EOF
 521 Rerun configure with logging enabled (do not use --disable-logging), and
 522 include the log this produces with your report.
 523 EOF
 524     else
 525         cat <<EOF
 526 Include the log file "$logfile" produced by configure as this will help
 527 solve the problem.
 528 EOF
 529     fi
 530     exit 1
 531 }
 532
 533 # Avoid locale weirdness, besides we really just want to translate ASCII.
 534 toupper(){
 535     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 536 }
 537
 538 tolower(){
 539     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 540 }
 541
 542 c_escape(){
 543     echo "$*" | sed 's/["\\]/\\\0/g'
 544 }
 545
 546 sh_quote(){
 547     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 548     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 549     echo "$v"
 550 }
 551
 552 cleanws(){
 553     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
 554 }
 555
 556 filter(){
 557     pat=$1
 558     shift
 559     for v; do
 560         eval "case '$v' in $pat) printf '%s ' '$v' ;; esac"
 561     done
 562 }
 563
 564 filter_out(){
 565     pat=$1
 566     shift
 567     for v; do
 568         eval "case '$v' in $pat) ;; *) printf '%s ' '$v' ;; esac"
 569     done
 570 }
 571
 572 map(){
 573     m=$1
 574     shift
 575     for v; do eval $m; done
 576 }
 577
 578 add_suffix(){
 579     suffix=$1
 580     shift
 581     for v; do echo ${v}${suffix}; done
 582 }
 583
 584 remove_suffix(){
 585     suffix=$1
 586     shift
 587     for v; do echo ${v%$suffix}; done
 588 }
 589
 590 set_all(){
 591     value=$1
 592     shift
 593     for var in $*; do
 594         eval $var=$value
 595     done
 596 }
 597
 598 set_weak(){
 599     value=$1
 600     shift
 601     for var; do
 602         eval : \${$var:=$value}
 603     done
 604 }
 605
 606 sanitize_var_name(){
 607     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 608 }
 609
 610 set_sanitized(){
 611     var=$1
 612     shift
 613     eval $(sanitize_var_name "$var")='$*'
 614 }
 615
 616 get_sanitized(){
 617     eval echo \$$(sanitize_var_name "$1")
 618 }
 619
 620 pushvar(){
 621     for pvar in $*; do
 622         eval level=\${${pvar}_level:=0}
 623         eval ${pvar}_${level}="\$$pvar"
 624         eval ${pvar}_level=$(($level+1))
 625     done
 626 }
 627
 628 popvar(){
 629     for pvar in $*; do
 630         eval level=\${${pvar}_level:-0}
 631         test $level = 0 && continue
 632         eval level=$(($level-1))
 633         eval $pvar="\${${pvar}_${level}}"
 634         eval ${pvar}_level=$level
 635         eval unset ${pvar}_${level}
 636     done
 637 }
 638
 639 request(){
 640     for var in $*; do
 641         eval ${var}_requested=yes
 642         eval $var=
 643     done
 644 }
 645
 646 enable(){
 647     set_all yes $*
 648 }
 649
 650 disable(){
 651     set_all no $*
 652 }
 653
 654 enable_weak(){
 655     set_weak yes $*
 656 }
 657
 658 disable_weak(){
 659     set_weak no $*
 660 }
 661
 662 enable_sanitized(){
 663     for var; do
 664         enable $(sanitize_var_name $var)
 665     done
 666 }
 667
 668 disable_sanitized(){
 669     for var; do
 670         disable $(sanitize_var_name $var)
 671     done
 672 }
 673
 674 do_enable_deep(){
 675     for var; do
 676         enabled $var && continue
 677         eval sel="\$${var}_select"
 678         eval sgs="\$${var}_suggest"
 679         pushvar var sgs
 680         enable_deep $sel
 681         popvar sgs
 682         enable_deep_weak $sgs
 683         popvar var
 684     done
 685 }
 686
 687 enable_deep(){
 688     do_enable_deep $*
 689     enable $*
 690 }
 691
 692 enable_deep_weak(){
 693     for var; do
 694         disabled $var && continue
 695         pushvar var
 696         do_enable_deep $var
 697         popvar var
 698         enable_weak $var
 699     done
 700 }
 701
 702 requested(){
 703     test "${1#!}" = "$1" && op="=" || op="!="
 704     eval test "x\$${1#!}_requested" $op "xyes"
 705 }
 706
 707 enabled(){
 708     test "${1#!}" = "$1" && op="=" || op="!="
 709     eval test "x\$${1#!}" $op "xyes"
 710 }
 711
 712 disabled(){
 713     test "${1#!}" = "$1" && op="=" || op="!="
 714     eval test "x\$${1#!}" $op "xno"
 715 }
 716
 717 enabled_all(){
 718     for opt; do
 719         enabled $opt || return 1
 720     done
 721 }
 722
 723 disabled_all(){
 724     for opt; do
 725         disabled $opt || return 1
 726     done
 727 }
 728
 729 enabled_any(){
 730     for opt; do
 731         enabled $opt && return 0
 732     done
 733 }
 734
 735 disabled_any(){
 736     for opt; do
 737         disabled $opt && return 0
 738     done
 739     return 1
 740 }
 741
 742 set_default(){
 743     for opt; do
 744         eval : \${$opt:=\$${opt}_default}
 745     done
 746 }
 747
 748 is_in(){
 749     value=$1
 750     shift
 751     for var in $*; do
 752         [ $var = $value ] && return 0
 753     done
 754     return 1
 755 }
 756
 757 check_deps(){
 758     for cfg; do
 759         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 760         disabled ${cfg}_checking && continue
 761         enable ${cfg}_checking
 762
 763         eval dep_all="\$${cfg}_deps"
 764         eval dep_any="\$${cfg}_deps_any"
 765         eval dep_con="\$${cfg}_conflict"
 766         eval dep_sel="\$${cfg}_select"
 767         eval dep_sgs="\$${cfg}_suggest"
 768         eval dep_ifa="\$${cfg}_if"
 769         eval dep_ifn="\$${cfg}_if_any"
 770
 771         pushvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
 772         check_deps $dep_all $dep_any $dep_con $dep_sel $dep_sgs $dep_ifa $dep_ifn
 773         popvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
 774
 775         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 776         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 777         enabled_all  $dep_all || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not all dependencies are satisfied: $dep_all"; }
 778         enabled_any  $dep_any || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not any dependency is satisfied: $dep_any"; }
 779         disabled_all $dep_con || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some conflicting dependencies are unsatisfied: $dep_con"; }
 780         disabled_any $dep_sel && { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some selected dependency is unsatisfied: $dep_sel"; }
 781
 782         enabled $cfg && enable_deep_weak $dep_sel $dep_sgs
 783
 784         for dep in $dep_all $dep_any $dep_sel $dep_sgs; do
 785             # filter out library deps, these do not belong in extralibs
 786             is_in $dep $LIBRARY_LIST && continue
 787             enabled $dep && eval append ${cfg}_extralibs ${dep}_extralibs
 788         done
 789
 790         disable ${cfg}_checking
 791     done
 792 }
 793
 794 print_config(){
 795     pfx=$1
 796     files=$2
 797     shift 2
 798     map 'eval echo "$v \${$v:-no}"' "$@" |
 799     awk "BEGIN { split(\"$files\", files) }
 800         {
 801             c = \"$pfx\" toupper(\$1);
 802             v = \$2;
 803             sub(/yes/, 1, v);
 804             sub(/no/,  0, v);
 805             for (f in files) {
 806                 file = files[f];
 807                 if (file ~ /\\.h\$/) {
 808                     printf(\"#define %s %d\\n\", c, v) >>file;
 809                 } else if (file ~ /\\.asm\$/) {
 810                     printf(\"%%define %s %d\\n\", c, v) >>file;
 811                 } else if (file ~ /\\.mak\$/) {
 812                     n = -v ? \"\" : \"!\";
 813                     printf(\"%s%s=yes\\n\", n, c) >>file;
 814                 } else if (file ~ /\\.texi\$/) {
 815                     pre = -v ? \"\" : \"@c \";
 816                     yesno = \$2;
 817                     c2 = tolower(c);
 818                     gsub(/_/, \"-\", c2);
 819                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 820                 }
 821             }
 822         }"
 823 }
 824
 825 print_enabled(){
 826     suf=$1
 827     shift
 828     for v; do
 829         enabled $v && printf "%s\n" ${v%$suf}
 830     done
 831 }
 832
 833 append(){
 834     var=$1
 835     shift
 836     eval "$var=\"\$$var $*\""
 837 }
 838
 839 prepend(){
 840     var=$1
 841     shift
 842     eval "$var=\"$* \$$var\""
 843 }
 844
 845 unique(){
 846     var=$1
 847     uniq_list=""
 848     for tok in $(eval echo \$$var); do
 849         uniq_list="$(filter_out $tok $uniq_list) $tok"
 850     done
 851     eval "$var=\"${uniq_list}\""
 852 }
 853
 854 resolve(){
 855     var=$1
 856     tmpvar=
 857     for entry in $(eval echo \$$var); do
 858         tmpvar="$tmpvar $(eval echo \$${entry})"
 859     done
 860     eval "$var=\"${tmpvar}\""
 861 }
 862
 863 add_cppflags(){
 864     append CPPFLAGS "$@"
 865 }
 866
 867 add_cflags(){
 868     append CFLAGS $($cflags_filter "$@")
 869 }
 870
 871 add_cflags_headers(){
 872     append CFLAGS_HEADERS $($cflags_filter "$@")
 873 }
 874
 875 add_cxxflags(){
 876     append CXXFLAGS $($cflags_filter "$@")
 877 }
 878
 879 add_asflags(){
 880     append ASFLAGS $($asflags_filter "$@")
 881 }
 882
 883 add_objcflags(){
 884     append OBJCFLAGS $($objcflags_filter "$@")
 885 }
 886
 887 add_ldflags(){
 888     append LDFLAGS $($ldflags_filter "$@")
 889 }
 890
 891 add_ldexeflags(){
 892     append LDEXEFLAGS $($ldflags_filter "$@")
 893 }
 894
 895 add_ldsoflags(){
 896     append LDSOFLAGS $($ldflags_filter "$@")
 897 }
 898
 899 add_stripflags(){
 900     append ASMSTRIPFLAGS "$@"
 901 }
 902
 903 add_extralibs(){
 904     prepend extralibs $($ldflags_filter "$@")
 905 }
 906
 907 add_host_cppflags(){
 908     append host_cppflags "$@"
 909 }
 910
 911 add_host_cflags(){
 912     append host_cflags $($host_cflags_filter "$@")
 913 }
 914
 915 add_host_ldflags(){
 916     append host_ldflags $($host_ldflags_filter "$@")
 917 }
 918
 919 add_compat(){
 920     append compat_objs $1
 921     shift
 922     map 'add_cppflags -D$v' "$@"
 923 }
 924
 925 test_cmd(){
 926     log "$@"
 927     "$@" >> $logfile 2>&1
 928 }
 929
 930 test_stat(){
 931     log test_stat "$@"
 932     stat "$1" >> $logfile 2>&1
 933 }
 934
 935 cc_o(){
 936     eval printf '%s\\n' $CC_O
 937 }
 938
 939 cc_e(){
 940     eval printf '%s\\n' $CC_E
 941 }
 942
 943 test_cc(){
 944     log test_cc "$@"
 945     cat > $TMPC
 946     log_file $TMPC
 947     test_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 948 }
 949
 950 test_cxx(){
 951     log test_cxx "$@"
 952     cat > $TMPCPP
 953     log_file $TMPCPP
 954     test_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
 955 }
 956
 957 test_objcc(){
 958     log test_objcc "$@"
 959     cat > $TMPM
 960     log_file $TMPM
 961     test_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
 962 }
 963
 964 test_cpp(){
 965     log test_cpp "$@"
 966     cat > $TMPC
 967     log_file $TMPC
 968     test_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 969 }
 970
 971 as_o(){
 972     eval printf '%s\\n' $AS_O
 973 }
 974
 975 test_as(){
 976     log test_as "$@"
 977     cat > $TMPS
 978     log_file $TMPS
 979     test_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 980 }
 981
 982 x86asm_o(){
 983     eval printf '%s\\n' $X86ASM_O
 984 }
 985
 986 test_x86asm(){
 987     log test_x86asm "$@"
 988     echo "$1" > $TMPASM
 989     log_file $TMPASM
 990     shift
 991     test_cmd $x86asmexe $X86ASMFLAGS -Werror "$@" $(x86asm_o $TMPO) $TMPASM
 992 }
 993
 994 check_cmd(){
 995     log check_cmd "$@"
 996     cmd=$1
 997     disabled $cmd && return
 998     disable $cmd
 999     test_cmd $@ && enable $cmd
1000 }
1001
1002 check_as(){
1003     log check_as "$@"
1004     name=$1
1005     code=$2
1006     shift 2
1007     disable $name
1008     test_as $@ <<EOF && enable $name
1009 $code
1010 EOF
1011 }
1012
1013 check_inline_asm(){
1014     log check_inline_asm "$@"
1015     name="$1"
1016     code="$2"
1017     shift 2
1018     disable $name
1019     test_cc "$@" <<EOF && enable $name
1020 void foo(void){ __asm__ volatile($code); }
1021 EOF
1022 }
1023
1024 check_inline_asm_flags(){
1025     log check_inline_asm_flags "$@"
1026     name="$1"
1027     code="$2"
1028     flags=''
1029     shift 2
1030     while [ "$1" != "" ]; do
1031       append flags $1
1032       shift
1033     done;
1034     disable $name
1035     cat > $TMPC <<EOF
1036 void foo(void){ __asm__ volatile($code); }
1037 EOF
1038     log_file $TMPC
1039     test_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
1040     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
1041 }
1042
1043 check_insn(){
1044     log check_insn "$@"
1045     check_inline_asm ${1}_inline "\"$2\""
1046     check_as ${1}_external "$2"
1047 }
1048
1049 check_x86asm(){
1050     log check_x86asm "$@"
1051     name=$1
1052     shift
1053     disable $name
1054     test_x86asm "$@" && enable $name
1055 }
1056
1057 ld_o(){
1058     eval printf '%s\\n' $LD_O
1059 }
1060
1061 test_ld(){
1062     log test_ld "$@"
1063     type=$1
1064     shift 1
1065     flags=$(filter_out '-l*|*.so' $@)
1066     libs=$(filter '-l*|*.so' $@)
1067     test_$type $($cflags_filter $flags) || return
1068     flags=$($ldflags_filter $flags)
1069     libs=$($ldflags_filter $libs)
1070     test_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
1071 }
1072
1073 check_ld(){
1074     log check_ld "$@"
1075     type=$1
1076     name=$2
1077     shift 2
1078     disable $name
1079     test_ld $type $@ && enable $name
1080 }
1081
1082 print_include(){
1083     hdr=$1
1084     test "${hdr%.h}" = "${hdr}" &&
1085         echo "#include $hdr"    ||
1086         echo "#include <$hdr>"
1087 }
1088
1089 test_code(){
1090     log test_code "$@"
1091     check=$1
1092     headers=$2
1093     code=$3
1094     shift 3
1095     {
1096         for hdr in $headers; do
1097             print_include $hdr
1098         done
1099         echo "int main(void) { $code; return 0; }"
1100     } | test_$check "$@"
1101 }
1102
1103 check_cppflags(){
1104     log check_cppflags "$@"
1105     test_cpp "$@" <<EOF && append CPPFLAGS "$@"
1106 #include <stdlib.h>
1107 EOF
1108 }
1109
1110 test_cflags(){
1111     log test_cflags "$@"
1112     set -- $($cflags_filter "$@")
1113     test_cc "$@" <<EOF
1114 int x;
1115 EOF
1116 }
1117
1118 check_cflags(){
1119     log check_cflags "$@"
1120     test_cflags "$@" && add_cflags "$@"
1121 }
1122
1123 check_cxxflags(){
1124     log check_cxxflags "$@"
1125     set -- $($cflags_filter "$@")
1126     test_cxx "$@" <<EOF && append CXXFLAGS "$@"
1127 int x;
1128 EOF
1129 }
1130
1131 test_objcflags(){
1132     log test_objcflags "$@"
1133     set -- $($objcflags_filter "$@")
1134     test_objcc "$@" <<EOF
1135 int x;
1136 EOF
1137 }
1138
1139 check_objcflags(){
1140     log check_objcflags "$@"
1141     test_objcflags "$@" && add_objcflags "$@"
1142 }
1143
1144 test_ldflags(){
1145     log test_ldflags "$@"
1146     set -- $($ldflags_filter "$@")
1147     test_ld "cc" "$@" <<EOF
1148 int main(void){ return 0; }
1149 EOF
1150 }
1151
1152 check_ldflags(){
1153     log check_ldflags "$@"
1154     test_ldflags "$@" && add_ldflags "$@"
1155 }
1156
1157 test_stripflags(){
1158     log test_stripflags "$@"
1159     # call test_cc to get a fresh TMPO
1160     test_cc <<EOF
1161 int main(void) { return 0; }
1162 EOF
1163     test_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1164 }
1165
1166 check_stripflags(){
1167     log check_stripflags "$@"
1168     test_stripflags "$@" && add_stripflags "$@"
1169 }
1170
1171 check_header(){
1172     log check_header "$@"
1173     headers=$1
1174     shift
1175     disable_sanitized $headers
1176     {
1177         for hdr in $headers; do
1178             print_include $hdr
1179         done
1180         echo "int x;"
1181     } | test_cpp "$@" && enable_sanitized $headers
1182 }
1183
1184 check_header_objcc(){
1185     log check_header_objcc "$@"
1186     rm -f -- "$TMPO"
1187     header=$1
1188     shift
1189     disable_sanitized $header
1190     {
1191        echo "#include <$header>"
1192        echo "int main(void) { return 0; }"
1193     } | test_objcc && test_stat "$TMPO" && enable_sanitized $header
1194 }
1195
1196 check_apple_framework(){
1197     log check_apple_framework "$@"
1198     framework="$1"
1199     name="$(tolower $framework)"
1200     header="${framework}/${framework}.h"
1201     disable $name
1202     check_header_objcc $header &&
1203         enable $name && eval ${name}_extralibs='"-framework $framework"'
1204 }
1205
1206 check_func(){
1207     log check_func "$@"
1208     func=$1
1209     shift
1210     disable $func
1211     test_ld "cc" "$@" <<EOF && enable $func
1212 extern int $func();
1213 int main(void){ $func(); }
1214 EOF
1215 }
1216
1217 check_complexfunc(){
1218     log check_complexfunc "$@"
1219     func=$1
1220     narg=$2
1221     shift 2
1222     test $narg = 2 && args="f, g" || args="f * I"
1223     disable $func
1224     test_ld "cc" "$@" <<EOF && enable $func
1225 #include <complex.h>
1226 #include <math.h>
1227 float foo(complex float f, complex float g) { return $func($args); }
1228 int main(void){ return (int) foo; }
1229 EOF
1230 }
1231
1232 check_mathfunc(){
1233     log check_mathfunc "$@"
1234     func=$1
1235     narg=$2
1236     shift 2
1237     test $narg = 2 && args="f, g" || args="f"
1238     disable $func
1239     test_ld "cc" "$@" <<EOF && enable $func
1240 #include <math.h>
1241 float foo(float f, float g) { return $func($args); }
1242 int main(void){ return (int) foo; }
1243 EOF
1244 }
1245
1246 check_func_headers(){
1247     log check_func_headers "$@"
1248     headers=$1
1249     funcs=$2
1250     shift 2
1251     {
1252         for hdr in $headers; do
1253             print_include $hdr
1254         done
1255         echo "#include <stdint.h>"
1256         for func in $funcs; do
1257             echo "long check_$func(void) { return (long) $func; }"
1258         done
1259         echo "int main(void) { int ret = 0;"
1260         # LTO could optimize out the test functions without this
1261         for func in $funcs; do
1262             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1263         done
1264         echo "return ret; }"
1265     } | test_ld "cc" "$@" && enable $funcs && enable_sanitized $headers
1266 }
1267
1268 check_class_headers_cpp(){
1269     log check_class_headers_cpp "$@"
1270     headers=$1
1271     classes=$2
1272     shift 2
1273     {
1274         for hdr in $headers; do
1275             echo "#include <$hdr>"
1276         done
1277         echo "int main(void) { "
1278         i=1
1279         for class in $classes; do
1280             echo "$class obj$i;"
1281             i=$(expr $i + 1)
1282         done
1283         echo "return 0; }"
1284     } | test_ld "cxx" "$@" && enable $funcs && enable_sanitized $headers
1285 }
1286
1287 test_cpp_condition(){
1288     log test_cpp_condition "$@"
1289     header=$1
1290     condition=$2
1291     shift 2
1292     test_cpp "$@" <<EOF
1293 #include <$header>
1294 #if !($condition)
1295 #error "unsatisfied condition: $condition"
1296 #endif
1297 EOF
1298 }
1299
1300 check_cpp_condition(){
1301     log check_cpp_condition "$@"
1302     name=$1
1303     shift 1
1304     disable $name
1305     test_cpp_condition "$@" && enable $name
1306 }
1307
1308 test_cflags_cc(){
1309     log test_cflags_cc "$@"
1310     flags=$1
1311     header=$2
1312     condition=$3
1313     shift 3
1314     set -- $($cflags_filter "$flags")
1315     test_cc "$@" <<EOF
1316 #include <$header>
1317 #if !($condition)
1318 #error "unsatisfied condition: $condition"
1319 #endif
1320 EOF
1321 }
1322
1323 check_lib(){
1324     log check_lib "$@"
1325     name="$1"
1326     headers="$2"
1327     funcs="$3"
1328     shift 3
1329     disable $name
1330     check_func_headers "$headers" "$funcs" "$@" &&
1331         enable $name && eval ${name}_extralibs="\$@"
1332 }
1333
1334 check_lib_cpp(){
1335     log check_lib_cpp "$@"
1336     name="$1"
1337     headers="$2"
1338     classes="$3"
1339     shift 3
1340     disable $name
1341     check_class_headers_cpp "$headers" "$classes" "$@" &&
1342         enable $name && eval ${name}_extralibs="\$@"
1343 }
1344
1345 test_pkg_config(){
1346     log test_pkg_config "$@"
1347     name="$1"
1348     pkg_version="$2"
1349     pkg="${2%% *}"
1350     headers="$3"
1351     funcs="$4"
1352     shift 4
1353     disable $name
1354     test_cmd $pkg_config --exists --print-errors $pkg_version || return
1355     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1356     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1357     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1358         enable $name &&
1359         set_sanitized "${name}_cflags"    $pkg_cflags &&
1360         set_sanitized "${name}_extralibs" $pkg_libs
1361 }
1362
1363 check_pkg_config(){
1364     log check_pkg_config "$@"
1365     name="$1"
1366     test_pkg_config "$@" &&
1367         eval add_cflags \$${name}_cflags
1368 }
1369
1370 test_exec(){
1371     test_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1372 }
1373
1374 check_exec_crash(){
1375     log check_exec_crash "$@"
1376     code=$(cat)
1377
1378     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1379     # are safe but may not be available everywhere.  Thus we use
1380     # raise(SIGTERM) instead.  The check is run in a subshell so we
1381     # can redirect the "Terminated" message from the shell.  SIGBUS
1382     # is not defined by standard C so it is used conditionally.
1383
1384     (test_exec "$@") >> $logfile 2>&1 <<EOF
1385 #include <signal.h>
1386 static void sighandler(int sig){
1387     raise(SIGTERM);
1388 }
1389 int foo(void){
1390     $code
1391 }
1392 int (*func_ptr)(void) = foo;
1393 int main(void){
1394     signal(SIGILL, sighandler);
1395     signal(SIGFPE, sighandler);
1396     signal(SIGSEGV, sighandler);
1397 #ifdef SIGBUS
1398     signal(SIGBUS, sighandler);
1399 #endif
1400     return func_ptr();
1401 }
1402 EOF
1403 }
1404
1405 check_type(){
1406     log check_type "$@"
1407     headers=$1
1408     type=$2
1409     shift 2
1410     disable_sanitized "$type"
1411     test_code cc "$headers" "$type v" "$@" && enable_sanitized "$type"
1412 }
1413
1414 check_struct(){
1415     log check_struct "$@"
1416     headers=$1
1417     struct=$2
1418     member=$3
1419     shift 3
1420     disable_sanitized "${struct}_${member}"
1421     test_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1422         enable_sanitized "${struct}_${member}"
1423 }
1424
1425 check_builtin(){
1426     log check_builtin "$@"
1427     name=$1
1428     headers=$2
1429     builtin=$3
1430     shift 3
1431     disable "$name"
1432     test_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1433 }
1434
1435 check_compile_assert(){
1436     log check_compile_assert "$@"
1437     name=$1
1438     headers=$2
1439     condition=$3
1440     shift 3
1441     disable "$name"
1442     test_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1443 }
1444
1445 check_cc(){
1446     log check_cc "$@"
1447     name=$1
1448     shift
1449     disable "$name"
1450     test_code cc "$@" && enable "$name"
1451 }
1452
1453 require(){
1454     log require "$@"
1455     name_version="$1"
1456     name="${1%% *}"
1457     shift
1458     check_lib $name "$@" || die "ERROR: $name_version not found"
1459 }
1460
1461 require_cc(){
1462     log require_cc "$@"
1463     name="$1"
1464     shift
1465     test_code cc "$@" || die "ERROR: $name failed"
1466 }
1467
1468 require_cpp(){
1469     name="$1"
1470     headers="$2"
1471     classes="$3"
1472     shift 3
1473     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1474 }
1475
1476 require_header(){
1477     log require_header "$@"
1478     headers="$1"
1479     check_header "$@" || die "ERROR: $headers not found"
1480 }
1481
1482 require_cpp_condition(){
1483     log require_cpp_condition "$@"
1484     condition="$2"
1485     test_cpp_condition "$@" || die "ERROR: $condition not satisfied"
1486 }
1487
1488 require_pkg_config(){
1489     log require_pkg_config "$@"
1490     pkg_version="$2"
1491     check_pkg_config "$@" || die "ERROR: $pkg_version not found using pkg-config$pkg_config_fail_message"
1492 }
1493
1494 hostcc_e(){
1495     eval printf '%s\\n' $HOSTCC_E
1496 }
1497
1498 hostcc_o(){
1499     eval printf '%s\\n' $HOSTCC_O
1500 }
1501
1502 test_host_cc(){
1503     log test_host_cc "$@"
1504     cat > $TMPC
1505     log_file $TMPC
1506     test_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1507 }
1508
1509 test_host_cpp(){
1510     log test_host_cpp "$@"
1511     cat > $TMPC
1512     log_file $TMPC
1513     test_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1514 }
1515
1516 check_host_cppflags(){
1517     log check_host_cppflags "$@"
1518     test_host_cpp "$@" <<EOF && append host_cppflags "$@"
1519 #include <stdlib.h>
1520 EOF
1521 }
1522
1523 check_host_cflags(){
1524     log check_host_cflags "$@"
1525     set -- $($host_cflags_filter "$@")
1526     test_host_cc "$@" <<EOF && append host_cflags "$@"
1527 int x;
1528 EOF
1529 }
1530
1531 test_host_cpp_condition(){
1532     log test_host_cpp_condition "$@"
1533     header=$1
1534     condition=$2
1535     shift 2
1536     test_host_cpp "$@" <<EOF
1537 #include <$header>
1538 #if !($condition)
1539 #error "unsatisfied condition: $condition"
1540 #endif
1541 EOF
1542 }
1543
1544 check_host_cpp_condition(){
1545     log check_host_cpp_condition "$@"
1546     name=$1
1547     shift 1
1548     disable $name
1549     test_host_cpp_condition "$@" && enable $name
1550 }
1551
1552 cp_if_changed(){
1553     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1554     mkdir -p "$(dirname $2)"
1555     cp -f "$1" "$2"
1556 }
1557
1558 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1559 # system-dependent things.
1560
1561 AVCODEC_COMPONENTS="
1562     bsfs
1563     decoders
1564     encoders
1565     hwaccels
1566     parsers
1567 "
1568
1569 AVDEVICE_COMPONENTS="
1570     indevs
1571     outdevs
1572 "
1573
1574 AVFILTER_COMPONENTS="
1575     filters
1576 "
1577
1578 AVFORMAT_COMPONENTS="
1579     demuxers
1580     muxers
1581     protocols
1582 "
1583
1584 COMPONENT_LIST="
1585     $AVCODEC_COMPONENTS
1586     $AVDEVICE_COMPONENTS
1587     $AVFILTER_COMPONENTS
1588     $AVFORMAT_COMPONENTS
1589 "
1590
1591 EXAMPLE_LIST="
1592     avio_dir_cmd_example
1593     avio_reading_example
1594     decode_audio_example
1595     decode_video_example
1596     demuxing_decoding_example
1597     encode_audio_example
1598     encode_video_example
1599     extract_mvs_example
1600     filter_audio_example
1601     filtering_audio_example
1602     filtering_video_example
1603     http_multiclient_example
1604     hw_decode_example
1605     metadata_example
1606     muxing_example
1607     qsvdec_example
1608     remuxing_example
1609     resampling_audio_example
1610     scaling_video_example
1611     transcode_aac_example
1612     transcoding_example
1613     vaapi_encode_example
1614     vaapi_transcode_example
1615 "
1616
1617 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1618     alsa
1619     appkit
1620     avfoundation
1621     bzlib
1622     coreimage
1623     iconv
1624     libxcb
1625     libxcb_shm
1626     libxcb_shape
1627     libxcb_xfixes
1628     lzma
1629     schannel
1630     sdl2
1631     securetransport
1632     sndio
1633     xlib
1634     zlib
1635 "
1636
1637 EXTERNAL_LIBRARY_GPL_LIST="
1638     avisynth
1639     frei0r
1640     libcdio
1641     librubberband
1642     libvidstab
1643     libx264
1644     libx265
1645     libxavs
1646     libxvid
1647 "
1648
1649 EXTERNAL_LIBRARY_NONFREE_LIST="
1650     decklink
1651     libndi_newtek
1652     libfdk_aac
1653     openssl
1654     libtls
1655 "
1656
1657 EXTERNAL_LIBRARY_VERSION3_LIST="
1658     gmp
1659     libopencore_amrnb
1660     libopencore_amrwb
1661     libvmaf
1662     libvo_amrwbenc
1663     mbedtls
1664     rkmpp
1665 "
1666
1667 EXTERNAL_LIBRARY_GPLV3_LIST="
1668     libsmbclient
1669 "
1670
1671 EXTERNAL_LIBRARY_LIST="
1672     $EXTERNAL_LIBRARY_GPL_LIST
1673     $EXTERNAL_LIBRARY_NONFREE_LIST
1674     $EXTERNAL_LIBRARY_VERSION3_LIST
1675     $EXTERNAL_LIBRARY_GPLV3_LIST
1676     chromaprint
1677     gcrypt
1678     gnutls
1679     jni
1680     ladspa
1681     libaom
1682     libass
1683     libbluray
1684     libbs2b
1685     libcaca
1686     libcelt
1687     libcodec2
1688     libdc1394
1689     libdrm
1690     libflite
1691     libfontconfig
1692     libfreetype
1693     libfribidi
1694     libgme
1695     libgsm
1696     libiec61883
1697     libilbc
1698     libjack
1699     libkvazaar
1700     libmodplug
1701     libmp3lame
1702     libmysofa
1703     libopencv
1704     libopenh264
1705     libopenjpeg
1706     libopenmpt
1707     libopus
1708     libpulse
1709     librsvg
1710     librtmp
1711     libshine
1712     libsmbclient
1713     libsnappy
1714     libsoxr
1715     libspeex
1716     libsrt
1717     libssh
1718     libtensorflow
1719     libtesseract
1720     libtheora
1721     libtwolame
1722     libv4l2
1723     libvorbis
1724     libvpx
1725     libwavpack
1726     libwebp
1727     libxml2
1728     libzimg
1729     libzmq
1730     libzvbi
1731     lv2
1732     mediacodec
1733     openal
1734     opengl
1735     vapoursynth
1736 "
1737
1738 HWACCEL_AUTODETECT_LIBRARY_LIST="
1739     amf
1740     audiotoolbox
1741     crystalhd
1742     cuda
1743     cuvid
1744     d3d11va
1745     dxva2
1746     ffnvcodec
1747     nvdec
1748     nvenc
1749     vaapi
1750     vdpau
1751     videotoolbox
1752     v4l2_m2m
1753     xvmc
1754 "
1755
1756 # catchall list of things that require external libs to link
1757 EXTRALIBS_LIST="
1758     cpu_init
1759     cws2fws
1760 "
1761
1762 HWACCEL_LIBRARY_NONFREE_LIST="
1763     cuda_sdk
1764     libnpp
1765 "
1766
1767 HWACCEL_LIBRARY_LIST="
1768     $HWACCEL_LIBRARY_NONFREE_LIST
1769     libmfx
1770     mmal
1771     omx
1772     opencl
1773 "
1774
1775 DOCUMENT_LIST="
1776     doc
1777     htmlpages
1778     manpages
1779     podpages
1780     txtpages
1781 "
1782
1783 FEATURE_LIST="
1784     ftrapv
1785     gray
1786     hardcoded_tables
1787     omx_rpi
1788     runtime_cpudetect
1789     safe_bitstream_reader
1790     shared
1791     small
1792     static
1793     swscale_alpha
1794 "
1795
1796 LIBRARY_LIST="
1797     avcodec
1798     avdevice
1799     avfilter
1800     avformat
1801     avresample
1802     avutil
1803     postproc
1804     swresample
1805     swscale
1806 "
1807
1808 LICENSE_LIST="
1809     gpl
1810     nonfree
1811     version3
1812 "
1813
1814 PROGRAM_LIST="
1815     ffplay
1816     ffprobe
1817     ffmpeg
1818 "
1819
1820 SUBSYSTEM_LIST="
1821     dct
1822     dwt
1823     error_resilience
1824     faan
1825     fast_unaligned
1826     fft
1827     lsp
1828     lzo
1829     mdct
1830     pixelutils
1831     network
1832     rdft
1833 "
1834
1835 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1836 CONFIG_LIST="
1837     $DOCUMENT_LIST
1838     $EXAMPLE_LIST
1839     $EXTERNAL_LIBRARY_LIST
1840     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1841     $HWACCEL_LIBRARY_LIST
1842     $HWACCEL_AUTODETECT_LIBRARY_LIST
1843     $FEATURE_LIST
1844     $LICENSE_LIST
1845     $LIBRARY_LIST
1846     $PROGRAM_LIST
1847     $SUBSYSTEM_LIST
1848     autodetect
1849     fontconfig
1850     linux_perf
1851     memory_poisoning
1852     neon_clobber_test
1853     ossfuzz
1854     pic
1855     thumb
1856     valgrind_backtrace
1857     xmm_clobber_test
1858     $COMPONENT_LIST
1859 "
1860
1861 THREADS_LIST="
1862     pthreads
1863     os2threads
1864     w32threads
1865 "
1866
1867 ATOMICS_LIST="
1868     atomics_gcc
1869     atomics_suncc
1870     atomics_win32
1871 "
1872
1873 AUTODETECT_LIBS="
1874     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1875     $HWACCEL_AUTODETECT_LIBRARY_LIST
1876     $THREADS_LIST
1877 "
1878
1879 ARCH_LIST="
1880     aarch64
1881     alpha
1882     arm
1883     avr32
1884     avr32_ap
1885     avr32_uc
1886     bfin
1887     ia64
1888     m68k
1889     mips
1890     mips64
1891     parisc
1892     ppc
1893     ppc64
1894     s390
1895     sh4
1896     sparc
1897     sparc64
1898     tilegx
1899     tilepro
1900     tomi
1901     x86
1902     x86_32
1903     x86_64
1904 "
1905
1906 ARCH_EXT_LIST_ARM="
1907     armv5te
1908     armv6
1909     armv6t2
1910     armv8
1911     neon
1912     vfp
1913     vfpv3
1914     setend
1915 "
1916
1917 ARCH_EXT_LIST_MIPS="
1918     mipsfpu
1919     mips32r2
1920     mips32r5
1921     mips64r2
1922     mips32r6
1923     mips64r6
1924     mipsdsp
1925     mipsdspr2
1926     msa
1927 "
1928
1929 ARCH_EXT_LIST_LOONGSON="
1930     loongson2
1931     loongson3
1932     mmi
1933 "
1934
1935 ARCH_EXT_LIST_X86_SIMD="
1936     aesni
1937     amd3dnow
1938     amd3dnowext
1939     avx
1940     avx2
1941     avx512
1942     fma3
1943     fma4
1944     mmx
1945     mmxext
1946     sse
1947     sse2
1948     sse3
1949     sse4
1950     sse42
1951     ssse3
1952     xop
1953 "
1954
1955 ARCH_EXT_LIST_PPC="
1956     altivec
1957     dcbzl
1958     ldbrx
1959     power8
1960     ppc4xx
1961     vsx
1962 "
1963
1964 ARCH_EXT_LIST_X86="
1965     $ARCH_EXT_LIST_X86_SIMD
1966     cpunop
1967     i686
1968 "
1969
1970 ARCH_EXT_LIST="
1971     $ARCH_EXT_LIST_ARM
1972     $ARCH_EXT_LIST_PPC
1973     $ARCH_EXT_LIST_X86
1974     $ARCH_EXT_LIST_MIPS
1975     $ARCH_EXT_LIST_LOONGSON
1976 "
1977
1978 ARCH_FEATURES="
1979     aligned_stack
1980     fast_64bit
1981     fast_clz
1982     fast_cmov
1983     local_aligned
1984     simd_align_16
1985     simd_align_32
1986     simd_align_64
1987 "
1988
1989 BUILTIN_LIST="
1990     atomic_cas_ptr
1991     machine_rw_barrier
1992     MemoryBarrier
1993     mm_empty
1994     rdtsc
1995     sem_timedwait
1996     sync_val_compare_and_swap
1997 "
1998 HAVE_LIST_CMDLINE="
1999     inline_asm
2000     symver
2001     x86asm
2002 "
2003
2004 HAVE_LIST_PUB="
2005     bigendian
2006     fast_unaligned
2007 "
2008
2009 HEADERS_LIST="
2010     arpa_inet_h
2011     asm_types_h
2012     cdio_paranoia_h
2013     cdio_paranoia_paranoia_h
2014     cuda_h
2015     dispatch_dispatch_h
2016     dev_bktr_ioctl_bt848_h
2017     dev_bktr_ioctl_meteor_h
2018     dev_ic_bt8xx_h
2019     dev_video_bktr_ioctl_bt848_h
2020     dev_video_meteor_ioctl_meteor_h
2021     direct_h
2022     dirent_h
2023     dxgidebug_h
2024     dxva_h
2025     ES2_gl_h
2026     gsm_h
2027     io_h
2028     linux_perf_event_h
2029     machine_ioctl_bt848_h
2030     machine_ioctl_meteor_h
2031     malloc_h
2032     opencv2_core_core_c_h
2033     OpenGL_gl3_h
2034     poll_h
2035     sys_param_h
2036     sys_resource_h
2037     sys_select_h
2038     sys_soundcard_h
2039     sys_time_h
2040     sys_un_h
2041     sys_videoio_h
2042     termios_h
2043     udplite_h
2044     unistd_h
2045     valgrind_valgrind_h
2046     windows_h
2047     winsock2_h
2048 "
2049
2050 INTRINSICS_LIST="
2051     intrinsics_neon
2052 "
2053
2054 COMPLEX_FUNCS="
2055     cabs
2056     cexp
2057 "
2058
2059 MATH_FUNCS="
2060     atanf
2061     atan2f
2062     cbrt
2063     cbrtf
2064     copysign
2065     cosf
2066     erf
2067     exp2
2068     exp2f
2069     expf
2070     hypot
2071     isfinite
2072     isinf
2073     isnan
2074     ldexpf
2075     llrint
2076     llrintf
2077     log2
2078     log2f
2079     log10f
2080     lrint
2081     lrintf
2082     powf
2083     rint
2084     round
2085     roundf
2086     sinf
2087     trunc
2088     truncf
2089 "
2090
2091 SYSTEM_FEATURES="
2092     dos_paths
2093     libc_msvcrt
2094     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2095     section_data_rel_ro
2096     threads
2097     uwp
2098     winrt
2099 "
2100
2101 SYSTEM_FUNCS="
2102     access
2103     aligned_malloc
2104     arc4random
2105     clock_gettime
2106     closesocket
2107     CommandLineToArgvW
2108     fcntl
2109     getaddrinfo
2110     gethrtime
2111     getopt
2112     GetProcessAffinityMask
2113     GetProcessMemoryInfo
2114     GetProcessTimes
2115     getrusage
2116     GetSystemTimeAsFileTime
2117     gettimeofday
2118     glob
2119     glXGetProcAddress
2120     gmtime_r
2121     inet_aton
2122     isatty
2123     kbhit
2124     localtime_r
2125     lstat
2126     lzo1x_999_compress
2127     mach_absolute_time
2128     MapViewOfFile
2129     memalign
2130     mkstemp
2131     mmap
2132     mprotect
2133     nanosleep
2134     PeekNamedPipe
2135     posix_memalign
2136     pthread_cancel
2137     sched_getaffinity
2138     SecItemImport
2139     SetConsoleTextAttribute
2140     SetConsoleCtrlHandler
2141     setmode
2142     setrlimit
2143     Sleep
2144     strerror_r
2145     sysconf
2146     sysctl
2147     usleep
2148     UTGetOSTypeFromString
2149     VirtualAlloc
2150     wglGetProcAddress
2151 "
2152
2153 SYSTEM_LIBRARIES="
2154     bcrypt
2155     vaapi_drm
2156     vaapi_x11
2157     vdpau_x11
2158 "
2159
2160 TOOLCHAIN_FEATURES="
2161     as_arch_directive
2162     as_dn_directive
2163     as_fpu_directive
2164     as_func
2165     as_object_arch
2166     asm_mod_q
2167     blocks_extension
2168     ebp_available
2169     ebx_available
2170     gnu_as
2171     gnu_windres
2172     ibm_asm
2173     inline_asm_direct_symbol_refs
2174     inline_asm_labels
2175     inline_asm_nonlocal_labels
2176     pragma_deprecated
2177     rsync_contimeout
2178     symver_asm_label
2179     symver_gnu_asm
2180     vfp_args
2181     xform_asm
2182     xmm_clobbers
2183 "
2184
2185 TYPES_LIST="
2186     kCMVideoCodecType_HEVC
2187     socklen_t
2188     struct_addrinfo
2189     struct_group_source_req
2190     struct_ip_mreq_source
2191     struct_ipv6_mreq
2192     struct_msghdr_msg_flags
2193     struct_pollfd
2194     struct_rusage_ru_maxrss
2195     struct_sctp_event_subscribe
2196     struct_sockaddr_in6
2197     struct_sockaddr_sa_len
2198     struct_sockaddr_storage
2199     struct_stat_st_mtim_tv_nsec
2200     struct_v4l2_frmivalenum_discrete
2201 "
2202
2203 HAVE_LIST="
2204     $ARCH_EXT_LIST
2205     $(add_suffix _external $ARCH_EXT_LIST)
2206     $(add_suffix _inline   $ARCH_EXT_LIST)
2207     $ARCH_FEATURES
2208     $BUILTIN_LIST
2209     $COMPLEX_FUNCS
2210     $HAVE_LIST_CMDLINE
2211     $HAVE_LIST_PUB
2212     $HEADERS_LIST
2213     $INTRINSICS_LIST
2214     $MATH_FUNCS
2215     $SYSTEM_FEATURES
2216     $SYSTEM_FUNCS
2217     $SYSTEM_LIBRARIES
2218     $THREADS_LIST
2219     $TOOLCHAIN_FEATURES
2220     $TYPES_LIST
2221     makeinfo
2222     makeinfo_html
2223     opencl_d3d11
2224     opencl_drm_arm
2225     opencl_drm_beignet
2226     opencl_dxva2
2227     opencl_vaapi_beignet
2228     opencl_vaapi_intel_media
2229     perl
2230     pod2man
2231     texi2html
2232 "
2233
2234 # options emitted with CONFIG_ prefix but not available on the command line
2235 CONFIG_EXTRA="
2236     aandcttables
2237     ac3dsp
2238     adts_header
2239     audio_frame_queue
2240     audiodsp
2241     blockdsp
2242     bswapdsp
2243     cabac
2244     cbs
2245     cbs_h264
2246     cbs_h265
2247     cbs_mpeg2
2248     cbs_vp9
2249     dirac_parse
2250     dnn
2251     dvprofile
2252     exif
2253     faandct
2254     faanidct
2255     fdctdsp
2256     flacdsp
2257     fmtconvert
2258     frame_thread_encoder
2259     g722dsp
2260     golomb
2261     gplv3
2262     h263dsp
2263     h264chroma
2264     h264dsp
2265     h264parse
2266     h264pred
2267     h264qpel
2268     hevcparse
2269     hpeldsp
2270     huffman
2271     huffyuvdsp
2272     huffyuvencdsp
2273     idctdsp
2274     iirfilter
2275     mdct15
2276     intrax8
2277     iso_media
2278     ividsp
2279     jpegtables
2280     lgplv3
2281     libx262
2282     llauddsp
2283     llviddsp
2284     llvidencdsp
2285     lpc
2286     lzf
2287     me_cmp
2288     mpeg_er
2289     mpegaudio
2290     mpegaudiodsp
2291     mpegaudioheader
2292     mpegvideo
2293     mpegvideoenc
2294     mss34dsp
2295     pixblockdsp
2296     qpeldsp
2297     qsv
2298     qsvdec
2299     qsvenc
2300     qsvvpp
2301     rangecoder
2302     riffdec
2303     riffenc
2304     rtpdec
2305     rtpenc_chain
2306     rv34dsp
2307     sinewin
2308     snappy
2309     srtp
2310     startcode
2311     texturedsp
2312     texturedspenc
2313     tpeldsp
2314     vaapi_1
2315     vaapi_encode
2316     vc1dsp
2317     videodsp
2318     vp3dsp
2319     vp56dsp
2320     vp8dsp
2321     wma_freqs
2322     wmv2dsp
2323 "
2324
2325 CMDLINE_SELECT="
2326     $ARCH_EXT_LIST
2327     $CONFIG_LIST
2328     $HAVE_LIST_CMDLINE
2329     $THREADS_LIST
2330     asm
2331     cross_compile
2332     debug
2333     extra_warnings
2334     logging
2335     lto
2336     optimizations
2337     rpath
2338     stripping
2339 "
2340
2341 PATHS_LIST="
2342     bindir
2343     datadir
2344     docdir
2345     incdir
2346     libdir
2347     mandir
2348     pkgconfigdir
2349     prefix
2350     shlibdir
2351     install_name_dir
2352 "
2353
2354 CMDLINE_SET="
2355     $PATHS_LIST
2356     ar
2357     arch
2358     as
2359     assert_level
2360     build_suffix
2361     cc
2362     objcc
2363     cpu
2364     cross_prefix
2365     custom_allocator
2366     cxx
2367     dep_cc
2368     doxygen
2369     env
2370     extra_version
2371     gas
2372     host_cc
2373     host_cflags
2374     host_extralibs
2375     host_ld
2376     host_ldflags
2377     host_os
2378     ignore_tests
2379     install
2380     ld
2381     ln_s
2382     logfile
2383     malloc_prefix
2384     nm
2385     optflags
2386     nvcc
2387     nvccflags
2388     pkg_config
2389     pkg_config_flags
2390     progs_suffix
2391     random_seed
2392     ranlib
2393     samples
2394     strip
2395     sws_max_filter_size
2396     sysinclude
2397     sysroot
2398     target_exec
2399     target_os
2400     target_path
2401     target_samples
2402     tempprefix
2403     toolchain
2404     valgrind
2405     x86asmexe
2406 "
2407
2408 CMDLINE_APPEND="
2409     extra_cflags
2410     extra_cxxflags
2411     extra_objcflags
2412     host_cppflags
2413 "
2414
2415 # code dependency declarations
2416
2417 # architecture extensions
2418
2419 armv5te_deps="arm"
2420 armv6_deps="arm"
2421 armv6t2_deps="arm"
2422 armv8_deps="aarch64"
2423 neon_deps_any="aarch64 arm"
2424 intrinsics_neon_deps="neon"
2425 vfp_deps_any="aarch64 arm"
2426 vfpv3_deps="vfp"
2427 setend_deps="arm"
2428
2429 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2430
2431 altivec_deps="ppc"
2432 dcbzl_deps="ppc"
2433 ldbrx_deps="ppc"
2434 ppc4xx_deps="ppc"
2435 vsx_deps="altivec"
2436 power8_deps="vsx"
2437
2438 loongson2_deps="mips"
2439 loongson3_deps="mips"
2440 mips32r2_deps="mips"
2441 mips32r5_deps="mips"
2442 mips32r6_deps="mips"
2443 mips64r2_deps="mips"
2444 mips64r6_deps="mips"
2445 mipsfpu_deps="mips"
2446 mipsdsp_deps="mips"
2447 mipsdspr2_deps="mips"
2448 mmi_deps="mips"
2449 msa_deps="mipsfpu"
2450
2451 cpunop_deps="i686"
2452 x86_64_select="i686"
2453 x86_64_suggest="fast_cmov"
2454
2455 amd3dnow_deps="mmx"
2456 amd3dnowext_deps="amd3dnow"
2457 i686_deps="x86"
2458 mmx_deps="x86"
2459 mmxext_deps="mmx"
2460 sse_deps="mmxext"
2461 sse2_deps="sse"
2462 sse3_deps="sse2"
2463 ssse3_deps="sse3"
2464 sse4_deps="ssse3"
2465 sse42_deps="sse4"
2466 aesni_deps="sse42"
2467 avx_deps="sse42"
2468 xop_deps="avx"
2469 fma3_deps="avx"
2470 fma4_deps="avx"
2471 avx2_deps="avx"
2472 avx512_deps="avx2"
2473
2474 mmx_external_deps="x86asm"
2475 mmx_inline_deps="inline_asm x86"
2476 mmx_suggest="mmx_external mmx_inline"
2477
2478 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2479     eval dep=\$${ext}_deps
2480     eval ${ext}_external_deps='"${dep}_external"'
2481     eval ${ext}_inline_deps='"${dep}_inline"'
2482     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2483 done
2484
2485 aligned_stack_if_any="aarch64 ppc x86"
2486 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2487 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2488 fast_unaligned_if_any="aarch64 ppc x86"
2489 simd_align_16_if_any="altivec neon sse"
2490 simd_align_32_if_any="avx"
2491 simd_align_64_if_any="avx512"
2492
2493 # system capabilities
2494 linux_perf_deps="linux_perf_event_h"
2495 symver_if_any="symver_asm_label symver_gnu_asm"
2496 valgrind_backtrace_conflict="optimizations"
2497 valgrind_backtrace_deps="valgrind_valgrind_h"
2498
2499 # threading support
2500 atomics_gcc_if="sync_val_compare_and_swap"
2501 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2502 atomics_win32_if="MemoryBarrier"
2503 atomics_native_if_any="$ATOMICS_LIST"
2504 w32threads_deps="atomics_native"
2505 threads_if_any="$THREADS_LIST"
2506
2507 # subsystems
2508 cbs_h264_select="cbs golomb"
2509 cbs_h265_select="cbs golomb"
2510 cbs_mpeg2_select="cbs"
2511 cbs_vp9_select="cbs"
2512 dct_select="rdft"
2513 dirac_parse_select="golomb"
2514 dnn_suggest="libtensorflow"
2515 error_resilience_select="me_cmp"
2516 faandct_deps="faan"
2517 faandct_select="fdctdsp"
2518 faanidct_deps="faan"
2519 faanidct_select="idctdsp"
2520 h264dsp_select="startcode"
2521 hevcparse_select="golomb"
2522 frame_thread_encoder_deps="encoders threads"
2523 intrax8_select="blockdsp idctdsp"
2524 mdct_select="fft"
2525 mdct15_select="fft"
2526 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2527 mpeg_er_select="error_resilience"
2528 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2529 mpegaudiodsp_select="dct"
2530 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2531 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2532 vc1dsp_select="h264chroma qpeldsp startcode"
2533 rdft_select="fft"
2534
2535 # decoders / encoders
2536 aac_decoder_select="adts_header mdct15 mdct sinewin"
2537 aac_fixed_decoder_select="adts_header mdct sinewin"
2538 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2539 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2540 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2541 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2542 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2543 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2544 adpcm_g722_decoder_select="g722dsp"
2545 adpcm_g722_encoder_select="g722dsp"
2546 aic_decoder_select="golomb idctdsp"
2547 alac_encoder_select="lpc"
2548 als_decoder_select="bswapdsp"
2549 amrnb_decoder_select="lsp"
2550 amrwb_decoder_select="lsp"
2551 amv_decoder_select="sp5x_decoder exif"
2552 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2553 ape_decoder_select="bswapdsp llauddsp"
2554 apng_decoder_deps="zlib"
2555 apng_encoder_deps="zlib"
2556 apng_encoder_select="llvidencdsp"
2557 aptx_decoder_select="audio_frame_queue"
2558 aptx_encoder_select="audio_frame_queue"
2559 aptx_hd_decoder_select="audio_frame_queue"
2560 aptx_hd_encoder_select="audio_frame_queue"
2561 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2562 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2563 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2564 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2565 atrac1_decoder_select="mdct sinewin"
2566 atrac3_decoder_select="mdct"
2567 atrac3p_decoder_select="mdct sinewin"
2568 avrn_decoder_select="exif jpegtables"
2569 bink_decoder_select="blockdsp hpeldsp"
2570 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2571 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2572 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2573 clearvideo_decoder_select="idctdsp"
2574 cllc_decoder_select="bswapdsp"
2575 comfortnoise_encoder_select="lpc"
2576 cook_decoder_select="audiodsp mdct sinewin"
2577 cscd_decoder_select="lzo"
2578 cscd_decoder_suggest="zlib"
2579 dca_decoder_select="mdct"
2580 dds_decoder_select="texturedsp"
2581 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2582 dnxhd_decoder_select="blockdsp idctdsp"
2583 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2584 dolby_e_decoder_select="mdct"
2585 dvvideo_decoder_select="dvprofile idctdsp"
2586 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2587 dxa_decoder_deps="zlib"
2588 dxv_decoder_select="lzf texturedsp"
2589 eac3_decoder_select="ac3_decoder"
2590 eac3_encoder_select="ac3_encoder"
2591 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2592 eatgq_decoder_select="aandcttables"
2593 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2594 exr_decoder_deps="zlib"
2595 ffv1_decoder_select="rangecoder"
2596 ffv1_encoder_select="rangecoder"
2597 ffvhuff_decoder_select="huffyuv_decoder"
2598 ffvhuff_encoder_select="huffyuv_encoder"
2599 fic_decoder_select="golomb"
2600 flac_decoder_select="flacdsp"
2601 flac_encoder_select="bswapdsp flacdsp lpc"
2602 flashsv2_decoder_deps="zlib"
2603 flashsv2_encoder_deps="zlib"
2604 flashsv_decoder_deps="zlib"
2605 flashsv_encoder_deps="zlib"
2606 flv_decoder_select="h263_decoder"
2607 flv_encoder_select="h263_encoder"
2608 fourxm_decoder_select="blockdsp bswapdsp"
2609 fraps_decoder_select="bswapdsp huffman"
2610 g2m_decoder_deps="zlib"
2611 g2m_decoder_select="blockdsp idctdsp jpegtables"
2612 g729_decoder_select="audiodsp"
2613 h261_decoder_select="mpegvideo"
2614 h261_encoder_select="aandcttables mpegvideoenc"
2615 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2616 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2617 h263i_decoder_select="h263_decoder"
2618 h263p_decoder_select="h263_decoder"
2619 h263p_encoder_select="h263_encoder"
2620 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2621 h264_decoder_suggest="error_resilience"
2622 hap_decoder_select="snappy texturedsp"
2623 hap_encoder_deps="libsnappy"
2624 hap_encoder_select="texturedspenc"
2625 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2626 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2627 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2628 iac_decoder_select="imc_decoder"
2629 imc_decoder_select="bswapdsp fft mdct sinewin"
2630 indeo3_decoder_select="hpeldsp"
2631 indeo4_decoder_select="ividsp"
2632 indeo5_decoder_select="ividsp"
2633 interplay_video_decoder_select="hpeldsp"
2634 jpegls_decoder_select="mjpeg_decoder"
2635 jv_decoder_select="blockdsp"
2636 lagarith_decoder_select="llviddsp"
2637 ljpeg_encoder_select="aandcttables idctdsp jpegtables mpegvideoenc"
2638 magicyuv_decoder_select="llviddsp"
2639 magicyuv_encoder_select="llvidencdsp"
2640 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2641 metasound_decoder_select="lsp mdct sinewin"
2642 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2643 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2644 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2645 mjpegb_decoder_select="mjpeg_decoder"
2646 mlp_decoder_select="mlp_parser"
2647 mlp_encoder_select="lpc"
2648 motionpixels_decoder_select="bswapdsp"
2649 mp1_decoder_select="mpegaudio"
2650 mp1float_decoder_select="mpegaudio"
2651 mp2_decoder_select="mpegaudio"
2652 mp2float_decoder_select="mpegaudio"
2653 mp3_decoder_select="mpegaudio"
2654 mp3adu_decoder_select="mpegaudio"
2655 mp3adufloat_decoder_select="mpegaudio"
2656 mp3float_decoder_select="mpegaudio"
2657 mp3on4_decoder_select="mpegaudio"
2658 mp3on4float_decoder_select="mpegaudio"
2659 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2660 mpc8_decoder_select="mpegaudiodsp"
2661 mpegvideo_decoder_select="mpegvideo"
2662 mpeg1video_decoder_select="mpegvideo"
2663 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2664 mpeg2video_decoder_select="mpegvideo"
2665 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2666 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2667 mpeg4_encoder_select="h263_encoder"
2668 msa1_decoder_select="mss34dsp"
2669 mscc_decoder_deps="zlib"
2670 msmpeg4v1_decoder_select="h263_decoder"
2671 msmpeg4v2_decoder_select="h263_decoder"
2672 msmpeg4v2_encoder_select="h263_encoder"
2673 msmpeg4v3_decoder_select="h263_decoder"
2674 msmpeg4v3_encoder_select="h263_encoder"
2675 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2676 mts2_decoder_select="mss34dsp"
2677 mxpeg_decoder_select="mjpeg_decoder"
2678 nellymoser_decoder_select="mdct sinewin"
2679 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2680 nuv_decoder_select="idctdsp lzo"
2681 on2avc_decoder_select="mdct"
2682 opus_decoder_deps="swresample"
2683 opus_decoder_select="mdct15"
2684 opus_encoder_select="audio_frame_queue mdct15"
2685 png_decoder_deps="zlib"
2686 png_encoder_deps="zlib"
2687 png_encoder_select="llvidencdsp"
2688 prores_decoder_select="blockdsp idctdsp"
2689 prores_encoder_select="fdctdsp"
2690 qcelp_decoder_select="lsp"
2691 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2692 ra_144_decoder_select="audiodsp"
2693 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2694 ralf_decoder_select="golomb"
2695 rawvideo_decoder_select="bswapdsp"
2696 rscc_decoder_deps="zlib"
2697 rtjpeg_decoder_select="me_cmp"
2698 rv10_decoder_select="h263_decoder"
2699 rv10_encoder_select="h263_encoder"
2700 rv20_decoder_select="h263_decoder"
2701 rv20_encoder_select="h263_encoder"
2702 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2703 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2704 screenpresso_decoder_deps="zlib"
2705 shorten_decoder_select="bswapdsp"
2706 sipr_decoder_select="lsp"
2707 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2708 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2709 sonic_decoder_select="golomb rangecoder"
2710 sonic_encoder_select="golomb rangecoder"
2711 sonic_ls_encoder_select="golomb rangecoder"
2712 sp5x_decoder_select="mjpeg_decoder"
2713 srgc_decoder_deps="zlib"
2714 svq1_decoder_select="hpeldsp"
2715 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2716 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2717 svq3_decoder_suggest="zlib"
2718 tak_decoder_select="audiodsp"
2719 tdsc_decoder_deps="zlib"
2720 tdsc_decoder_select="mjpeg_decoder"
2721 theora_decoder_select="vp3_decoder"
2722 thp_decoder_select="mjpeg_decoder"
2723 tiff_decoder_suggest="zlib lzma"
2724 tiff_encoder_suggest="zlib"
2725 truehd_decoder_select="mlp_parser"
2726 truehd_encoder_select="lpc"
2727 truemotion2_decoder_select="bswapdsp"
2728 truespeech_decoder_select="bswapdsp"
2729 tscc_decoder_deps="zlib"
2730 twinvq_decoder_select="mdct lsp sinewin"
2731 txd_decoder_select="texturedsp"
2732 utvideo_decoder_select="bswapdsp llviddsp"
2733 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2734 vble_decoder_select="llviddsp"
2735 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2736 vc1image_decoder_select="vc1_decoder"
2737 vorbis_decoder_select="mdct"
2738 vorbis_encoder_select="audio_frame_queue mdct"
2739 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2740 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2741 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2742 vp6a_decoder_select="vp6_decoder"
2743 vp6f_decoder_select="vp6_decoder"
2744 vp7_decoder_select="h264pred videodsp vp8dsp"
2745 vp8_decoder_select="h264pred videodsp vp8dsp"
2746 vp9_decoder_select="videodsp vp9_parser vp9_superframe_split_bsf"
2747 webp_decoder_select="vp8_decoder exif"
2748 wmalossless_decoder_select="llauddsp"
2749 wmapro_decoder_select="mdct sinewin wma_freqs"
2750 wmav1_decoder_select="mdct sinewin wma_freqs"
2751 wmav1_encoder_select="mdct sinewin wma_freqs"
2752 wmav2_decoder_select="mdct sinewin wma_freqs"
2753 wmav2_encoder_select="mdct sinewin wma_freqs"
2754 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2755 wmv1_decoder_select="h263_decoder"
2756 wmv1_encoder_select="h263_encoder"
2757 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2758 wmv2_encoder_select="h263_encoder wmv2dsp"
2759 wmv3_decoder_select="vc1_decoder"
2760 wmv3image_decoder_select="wmv3_decoder"
2761 xma1_decoder_select="wmapro_decoder"
2762 xma2_decoder_select="wmapro_decoder"
2763 zerocodec_decoder_deps="zlib"
2764 zlib_decoder_deps="zlib"
2765 zlib_encoder_deps="zlib"
2766 zmbv_decoder_deps="zlib"
2767 zmbv_encoder_deps="zlib"
2768
2769 # hardware accelerators
2770 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2771 cuda_deps="ffnvcodec"
2772 cuvid_deps="ffnvcodec"
2773 d3d11va_deps="dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2774 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32 user32"
2775 ffnvcodec_deps_any="libdl LoadLibrary"
2776 nvdec_deps="ffnvcodec"
2777 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2778 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2779 xvmc_deps="X11_extensions_XvMClib_h"
2780
2781 h263_vaapi_hwaccel_deps="vaapi"
2782 h263_vaapi_hwaccel_select="h263_decoder"
2783 h263_videotoolbox_hwaccel_deps="videotoolbox"
2784 h263_videotoolbox_hwaccel_select="h263_decoder"
2785 h264_d3d11va_hwaccel_deps="d3d11va"
2786 h264_d3d11va_hwaccel_select="h264_decoder"
2787 h264_d3d11va2_hwaccel_deps="d3d11va"
2788 h264_d3d11va2_hwaccel_select="h264_decoder"
2789 h264_dxva2_hwaccel_deps="dxva2"
2790 h264_dxva2_hwaccel_select="h264_decoder"
2791 h264_nvdec_hwaccel_deps="nvdec"
2792 h264_nvdec_hwaccel_select="h264_decoder"
2793 h264_vaapi_hwaccel_deps="vaapi"
2794 h264_vaapi_hwaccel_select="h264_decoder"
2795 h264_vdpau_hwaccel_deps="vdpau"
2796 h264_vdpau_hwaccel_select="h264_decoder"
2797 h264_videotoolbox_hwaccel_deps="videotoolbox"
2798 h264_videotoolbox_hwaccel_select="h264_decoder"
2799 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2800 hevc_d3d11va_hwaccel_select="hevc_decoder"
2801 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2802 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2803 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2804 hevc_dxva2_hwaccel_select="hevc_decoder"
2805 hevc_nvdec_hwaccel_deps="nvdec"
2806 hevc_nvdec_hwaccel_select="hevc_decoder"
2807 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2808 hevc_vaapi_hwaccel_select="hevc_decoder"
2809 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2810 hevc_vdpau_hwaccel_select="hevc_decoder"
2811 hevc_videotoolbox_hwaccel_deps="videotoolbox"
2812 hevc_videotoolbox_hwaccel_select="hevc_decoder"
2813 mjpeg_nvdec_hwaccel_deps="nvdec"
2814 mjpeg_nvdec_hwaccel_select="mjpeg_decoder"
2815 mjpeg_vaapi_hwaccel_deps="vaapi"
2816 mjpeg_vaapi_hwaccel_select="mjpeg_decoder"
2817 mpeg_xvmc_hwaccel_deps="xvmc"
2818 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2819 mpeg1_nvdec_hwaccel_deps="nvdec"
2820 mpeg1_nvdec_hwaccel_select="mpeg1video_decoder"
2821 mpeg1_vdpau_hwaccel_deps="vdpau"
2822 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2823 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2824 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2825 mpeg1_xvmc_hwaccel_deps="xvmc"
2826 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2827 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2828 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2829 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2830 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2831 mpeg2_dxva2_hwaccel_deps="dxva2"
2832 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2833 mpeg2_nvdec_hwaccel_deps="nvdec"
2834 mpeg2_nvdec_hwaccel_select="mpeg2video_decoder"
2835 mpeg2_vaapi_hwaccel_deps="vaapi"
2836 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2837 mpeg2_vdpau_hwaccel_deps="vdpau"
2838 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2839 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2840 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2841 mpeg2_xvmc_hwaccel_deps="xvmc"
2842 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2843 mpeg4_nvdec_hwaccel_deps="nvdec"
2844 mpeg4_nvdec_hwaccel_select="mpeg4_decoder"
2845 mpeg4_vaapi_hwaccel_deps="vaapi"
2846 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2847 mpeg4_vdpau_hwaccel_deps="vdpau"
2848 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2849 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2850 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2851 vc1_d3d11va_hwaccel_deps="d3d11va"
2852 vc1_d3d11va_hwaccel_select="vc1_decoder"
2853 vc1_d3d11va2_hwaccel_deps="d3d11va"
2854 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2855 vc1_dxva2_hwaccel_deps="dxva2"
2856 vc1_dxva2_hwaccel_select="vc1_decoder"
2857 vc1_nvdec_hwaccel_deps="nvdec"
2858 vc1_nvdec_hwaccel_select="vc1_decoder"
2859 vc1_vaapi_hwaccel_deps="vaapi"
2860 vc1_vaapi_hwaccel_select="vc1_decoder"
2861 vc1_vdpau_hwaccel_deps="vdpau"
2862 vc1_vdpau_hwaccel_select="vc1_decoder"
2863 vp8_nvdec_hwaccel_deps="nvdec"
2864 vp8_nvdec_hwaccel_select="vp8_decoder"
2865 vp8_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferVP8"
2866 vp8_vaapi_hwaccel_select="vp8_decoder"
2867 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2868 vp9_d3d11va_hwaccel_select="vp9_decoder"
2869 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2870 vp9_d3d11va2_hwaccel_select="vp9_decoder"
2871 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2872 vp9_dxva2_hwaccel_select="vp9_decoder"
2873 vp9_nvdec_hwaccel_deps="nvdec"
2874 vp9_nvdec_hwaccel_select="vp9_decoder"
2875 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2876 vp9_vaapi_hwaccel_select="vp9_decoder"
2877 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2878 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2879 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2880 wmv3_nvdec_hwaccel_select="vc1_nvdec_hwaccel"
2881 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2882 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2883
2884 # hardware-accelerated codecs
2885 omx_deps="libdl pthreads"
2886 omx_rpi_select="omx"
2887 qsv_deps="libmfx"
2888 qsvdec_select="qsv"
2889 qsvenc_select="qsv"
2890 qsvvpp_select="qsv"
2891 vaapi_encode_deps="vaapi"
2892 v4l2_m2m_deps="linux_videodev2_h sem_timedwait"
2893
2894 hwupload_cuda_filter_deps="ffnvcodec"
2895 scale_npp_filter_deps="ffnvcodec libnpp"
2896 scale_cuda_filter_deps="cuda_sdk"
2897 thumbnail_cuda_filter_deps="cuda_sdk"
2898
2899 amf_deps_any="libdl LoadLibrary"
2900 nvenc_deps="ffnvcodec"
2901 nvenc_deps_any="libdl LoadLibrary"
2902 nvenc_encoder_deps="nvenc"
2903
2904 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
2905 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
2906 h264_amf_encoder_deps="amf"
2907 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2908 h264_cuvid_decoder_deps="cuvid"
2909 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2910 h264_mediacodec_decoder_deps="mediacodec"
2911 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2912 h264_mmal_decoder_deps="mmal"
2913 h264_nvenc_encoder_deps="nvenc"
2914 h264_omx_encoder_deps="omx"
2915 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec"
2916 h264_qsv_encoder_select="qsvenc"
2917 h264_rkmpp_decoder_deps="rkmpp"
2918 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
2919 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2920 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
2921 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
2922 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
2923 hevc_amf_encoder_deps="amf"
2924 hevc_cuvid_decoder_deps="cuvid"
2925 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
2926 hevc_mediacodec_decoder_deps="mediacodec"
2927 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2928 hevc_nvenc_encoder_deps="nvenc"
2929 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec"
2930 hevc_qsv_encoder_select="hevcparse qsvenc"
2931 hevc_rkmpp_decoder_deps="rkmpp"
2932 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
2933 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2934 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
2935 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
2936 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
2937 mjpeg_cuvid_decoder_deps="cuvid"
2938 mjpeg_qsv_encoder_deps="libmfx"
2939 mjpeg_qsv_encoder_select="qsvenc"
2940 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2941 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2942 mpeg1_cuvid_decoder_deps="cuvid"
2943 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
2944 mpeg2_crystalhd_decoder_select="crystalhd"
2945 mpeg2_cuvid_decoder_deps="cuvid"
2946 mpeg2_mmal_decoder_deps="mmal"
2947 mpeg2_mediacodec_decoder_deps="mediacodec"
2948 mpeg2_qsv_decoder_select="qsvdec mpegvideo_parser"
2949 mpeg2_qsv_encoder_select="qsvenc"
2950 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2951 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
2952 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
2953 mpeg4_crystalhd_decoder_select="crystalhd"
2954 mpeg4_cuvid_decoder_deps="cuvid"
2955 mpeg4_mediacodec_decoder_deps="mediacodec"
2956 mpeg4_mmal_decoder_deps="mmal"
2957 mpeg4_omx_encoder_deps="omx"
2958 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2959 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2960 msmpeg4_crystalhd_decoder_select="crystalhd"
2961 nvenc_h264_encoder_select="h264_nvenc_encoder"
2962 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2963 vc1_crystalhd_decoder_select="crystalhd"
2964 vc1_cuvid_decoder_deps="cuvid"
2965 vc1_mmal_decoder_deps="mmal"
2966 vc1_qsv_decoder_select="qsvdec vc1_parser"
2967 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
2968 vp8_cuvid_decoder_deps="cuvid"
2969 vp8_mediacodec_decoder_deps="mediacodec"
2970 vp8_qsv_decoder_select="qsvdec vp8_parser"
2971 vp8_rkmpp_decoder_deps="rkmpp"
2972 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2973 vp8_vaapi_encoder_select="vaapi_encode"
2974 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
2975 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
2976 vp9_cuvid_decoder_deps="cuvid"
2977 vp9_mediacodec_decoder_deps="mediacodec"
2978 vp9_rkmpp_decoder_deps="rkmpp"
2979 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
2980 vp9_vaapi_encoder_select="vaapi_encode"
2981 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
2982 wmv3_crystalhd_decoder_select="crystalhd"
2983
2984 # parsers
2985 aac_parser_select="adts_header"
2986 h264_parser_select="golomb h264dsp h264parse"
2987 hevc_parser_select="hevcparse"
2988 mpegaudio_parser_select="mpegaudioheader"
2989 mpegvideo_parser_select="mpegvideo"
2990 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2991 vc1_parser_select="vc1dsp"
2992
2993 # bitstream_filters
2994 aac_adtstoasc_bsf_select="adts_header"
2995 filter_units_bsf_select="cbs"
2996 h264_metadata_bsf_deps="const_nan"
2997 h264_metadata_bsf_select="cbs_h264"
2998 h264_redundant_pps_bsf_select="cbs_h264"
2999 hevc_metadata_bsf_select="cbs_h265"
3000 mjpeg2jpeg_bsf_select="jpegtables"
3001 mpeg2_metadata_bsf_select="cbs_mpeg2"
3002 trace_headers_bsf_select="cbs"
3003 vp9_metadata_bsf_select="cbs_vp9"
3004
3005 # external libraries
3006 aac_at_decoder_deps="audiotoolbox"
3007 aac_at_decoder_select="aac_adtstoasc_bsf"
3008 ac3_at_decoder_deps="audiotoolbox"
3009 ac3_at_decoder_select="ac3_parser"
3010 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
3011 alac_at_decoder_deps="audiotoolbox"
3012 amr_nb_at_decoder_deps="audiotoolbox"
3013 avisynth_deps_any="libdl LoadLibrary"
3014 avisynth_demuxer_deps="avisynth"
3015 avisynth_demuxer_select="riffdec"
3016 eac3_at_decoder_deps="audiotoolbox"
3017 eac3_at_decoder_select="ac3_parser"
3018 gsm_ms_at_decoder_deps="audiotoolbox"
3019 ilbc_at_decoder_deps="audiotoolbox"
3020 mp1_at_decoder_deps="audiotoolbox"
3021 mp2_at_decoder_deps="audiotoolbox"
3022 mp3_at_decoder_deps="audiotoolbox"
3023 mp1_at_decoder_select="mpegaudioheader"
3024 mp2_at_decoder_select="mpegaudioheader"
3025 mp3_at_decoder_select="mpegaudioheader"
3026 pcm_alaw_at_decoder_deps="audiotoolbox"
3027 pcm_mulaw_at_decoder_deps="audiotoolbox"
3028 qdmc_at_decoder_deps="audiotoolbox"
3029 qdm2_at_decoder_deps="audiotoolbox"
3030 aac_at_encoder_deps="audiotoolbox"
3031 aac_at_encoder_select="audio_frame_queue"
3032 alac_at_encoder_deps="audiotoolbox"
3033 alac_at_encoder_select="audio_frame_queue"
3034 ilbc_at_encoder_deps="audiotoolbox"
3035 ilbc_at_encoder_select="audio_frame_queue"
3036 pcm_alaw_at_encoder_deps="audiotoolbox"
3037 pcm_alaw_at_encoder_select="audio_frame_queue"
3038 pcm_mulaw_at_encoder_deps="audiotoolbox"
3039 pcm_mulaw_at_encoder_select="audio_frame_queue"
3040 chromaprint_muxer_deps="chromaprint"
3041 h264_videotoolbox_encoder_deps="pthreads"
3042 h264_videotoolbox_encoder_select="videotoolbox_encoder"
3043 hevc_videotoolbox_encoder_deps="pthreads"
3044 hevc_videotoolbox_encoder_select="videotoolbox_encoder"
3045 libaom_av1_decoder_deps="libaom"
3046 libaom_av1_encoder_deps="libaom"
3047 libcelt_decoder_deps="libcelt"
3048 libcodec2_decoder_deps="libcodec2"
3049 libcodec2_encoder_deps="libcodec2"
3050 libfdk_aac_decoder_deps="libfdk_aac"
3051 libfdk_aac_encoder_deps="libfdk_aac"
3052 libfdk_aac_encoder_select="audio_frame_queue"
3053 libgme_demuxer_deps="libgme"
3054 libgsm_decoder_deps="libgsm"
3055 libgsm_encoder_deps="libgsm"
3056 libgsm_ms_decoder_deps="libgsm"
3057 libgsm_ms_encoder_deps="libgsm"
3058 libilbc_decoder_deps="libilbc"
3059 libilbc_encoder_deps="libilbc"
3060 libkvazaar_encoder_deps="libkvazaar"
3061 libmodplug_demuxer_deps="libmodplug"
3062 libmp3lame_encoder_deps="libmp3lame"
3063 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
3064 libopencore_amrnb_decoder_deps="libopencore_amrnb"
3065 libopencore_amrnb_encoder_deps="libopencore_amrnb"
3066 libopencore_amrnb_encoder_select="audio_frame_queue"
3067 libopencore_amrwb_decoder_deps="libopencore_amrwb"
3068 libopenh264_decoder_deps="libopenh264"
3069 libopenh264_decoder_select="h264_mp4toannexb_bsf"
3070 libopenh264_encoder_deps="libopenh264"
3071 libopenjpeg_decoder_deps="libopenjpeg"
3072 libopenjpeg_encoder_deps="libopenjpeg"
3073 libopenmpt_demuxer_deps="libopenmpt"
3074 libopus_decoder_deps="libopus"
3075 libopus_encoder_deps="libopus"
3076 libopus_encoder_select="audio_frame_queue"
3077 librsvg_decoder_deps="librsvg"
3078 libshine_encoder_deps="libshine"
3079 libshine_encoder_select="audio_frame_queue"
3080 libspeex_decoder_deps="libspeex"
3081 libspeex_encoder_deps="libspeex"
3082 libspeex_encoder_select="audio_frame_queue"
3083 libtheora_encoder_deps="libtheora"
3084 libtwolame_encoder_deps="libtwolame"
3085 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
3086 libvorbis_decoder_deps="libvorbis"
3087 libvorbis_encoder_deps="libvorbis libvorbisenc"
3088 libvorbis_encoder_select="audio_frame_queue"
3089 libvpx_vp8_decoder_deps="libvpx"
3090 libvpx_vp8_encoder_deps="libvpx"
3091 libvpx_vp9_decoder_deps="libvpx"
3092 libvpx_vp9_encoder_deps="libvpx"
3093 libwavpack_encoder_deps="libwavpack"
3094 libwavpack_encoder_select="audio_frame_queue"
3095 libwebp_encoder_deps="libwebp"
3096 libwebp_anim_encoder_deps="libwebp"
3097 libx262_encoder_deps="libx262"
3098 libx264_encoder_deps="libx264"
3099 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
3100 libx264rgb_encoder_select="libx264_encoder"
3101 libx265_encoder_deps="libx265"
3102 libxavs_encoder_deps="libxavs"
3103 libxvid_encoder_deps="libxvid"
3104 libzvbi_teletext_decoder_deps="libzvbi"
3105 vapoursynth_demuxer_deps="vapoursynth"
3106 videotoolbox_suggest="coreservices"
3107 videotoolbox_deps="corefoundation coremedia corevideo"
3108 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
3109
3110 # demuxers / muxers
3111 ac3_demuxer_select="ac3_parser"
3112 aiff_muxer_select="iso_media"
3113 asf_demuxer_select="riffdec"
3114 asf_o_demuxer_select="riffdec"
3115 asf_muxer_select="riffenc"
3116 asf_stream_muxer_select="asf_muxer"
3117 avi_demuxer_select="iso_media riffdec exif"
3118 avi_muxer_select="riffenc"
3119 caf_demuxer_select="iso_media riffdec"
3120 caf_muxer_select="iso_media"
3121 dash_muxer_select="mp4_muxer"
3122 dash_demuxer_deps="libxml2"
3123 dirac_demuxer_select="dirac_parser"
3124 dts_demuxer_select="dca_parser"
3125 dtshd_demuxer_select="dca_parser"
3126 dv_demuxer_select="dvprofile"
3127 dv_muxer_select="dvprofile"
3128 dxa_demuxer_select="riffdec"
3129 eac3_demuxer_select="ac3_parser"
3130 f4v_muxer_select="mov_muxer"
3131 fifo_muxer_deps="threads"
3132 flac_demuxer_select="flac_parser"
3133 hds_muxer_select="flv_muxer"
3134 hls_muxer_select="mpegts_muxer"
3135 hls_muxer_suggest="gcrypt openssl"
3136 image2_alias_pix_demuxer_select="image2_demuxer"
3137 image2_brender_pix_demuxer_select="image2_demuxer"
3138 ipod_muxer_select="mov_muxer"
3139 ismv_muxer_select="mov_muxer"
3140 matroska_audio_muxer_select="matroska_muxer"
3141 matroska_demuxer_select="iso_media riffdec"
3142 matroska_demuxer_suggest="bzlib lzo zlib"
3143 matroska_muxer_select="iso_media riffenc"
3144 mmf_muxer_select="riffenc"
3145 mov_demuxer_select="iso_media riffdec"
3146 mov_demuxer_suggest="zlib"
3147 mov_muxer_select="iso_media riffenc rtpenc_chain"
3148 mp3_demuxer_select="mpegaudio_parser"
3149 mp3_muxer_select="mpegaudioheader"
3150 mp4_muxer_select="mov_muxer"
3151 mpegts_demuxer_select="iso_media"
3152 mpegts_muxer_select="adts_muxer latm_muxer"
3153 mpegtsraw_demuxer_select="mpegts_demuxer"
3154 mxf_d10_muxer_select="mxf_muxer"
3155 mxf_opatom_muxer_select="mxf_muxer"
3156 nut_muxer_select="riffenc"
3157 nuv_demuxer_select="riffdec"
3158 oga_muxer_select="ogg_muxer"
3159 ogg_demuxer_select="dirac_parse"
3160 ogv_muxer_select="ogg_muxer"
3161 opus_muxer_select="ogg_muxer"
3162 psp_muxer_select="mov_muxer"
3163 rtp_demuxer_select="sdp_demuxer"
3164 rtp_muxer_select="golomb"
3165 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3166 rtsp_demuxer_select="http_protocol rtpdec"
3167 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3168 sap_demuxer_select="sdp_demuxer"
3169 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3170 sdp_demuxer_select="rtpdec"
3171 smoothstreaming_muxer_select="ismv_muxer"
3172 spdif_demuxer_select="adts_header"
3173 spdif_muxer_select="adts_header"
3174 spx_muxer_select="ogg_muxer"
3175 swf_demuxer_suggest="zlib"
3176 tak_demuxer_select="tak_parser"
3177 tg2_muxer_select="mov_muxer"
3178 tgp_muxer_select="mov_muxer"
3179 vobsub_demuxer_select="mpegps_demuxer"
3180 w64_demuxer_select="wav_demuxer"
3181 w64_muxer_select="wav_muxer"
3182 wav_demuxer_select="riffdec"
3183 wav_muxer_select="riffenc"
3184 webm_muxer_select="iso_media riffenc"
3185 webm_dash_manifest_demuxer_select="matroska_demuxer"
3186 wtv_demuxer_select="mpegts_demuxer riffdec"
3187 wtv_muxer_select="mpegts_muxer riffenc"
3188 xmv_demuxer_select="riffdec"
3189 xwma_demuxer_select="riffdec"
3190
3191 # indevs / outdevs
3192 android_camera_indev_deps="android camera2ndk mediandk pthreads"
3193 android_camera_indev_extralibs="-landroid -lcamera2ndk -lmediandk"
3194 alsa_indev_deps="alsa"
3195 alsa_outdev_deps="alsa"
3196 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3197 avfoundation_indev_suggest="coregraphics applicationservices"
3198 avfoundation_indev_extralibs="-framework Foundation"
3199 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3200 caca_outdev_deps="libcaca"
3201 decklink_deps_any="libdl LoadLibrary"
3202 decklink_indev_deps="decklink threads"
3203 decklink_indev_extralibs="-lstdc++"
3204 decklink_outdev_deps="decklink threads"
3205 decklink_outdev_extralibs="-lstdc++"
3206 libndi_newtek_indev_deps="libndi_newtek"
3207 libndi_newtek_indev_extralibs="-lndi"
3208 libndi_newtek_outdev_deps="libndi_newtek"
3209 libndi_newtek_outdev_extralibs="-lndi"
3210 dshow_indev_deps="IBaseFilter"
3211 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3212 fbdev_indev_deps="linux_fb_h"
3213 fbdev_outdev_deps="linux_fb_h"
3214 gdigrab_indev_deps="CreateDIBSection"
3215 gdigrab_indev_extralibs="-lgdi32"
3216 gdigrab_indev_select="bmp_decoder"
3217 iec61883_indev_deps="libiec61883"
3218 jack_indev_deps="libjack"
3219 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3220 kmsgrab_indev_deps="libdrm"
3221 lavfi_indev_deps="avfilter"
3222 libcdio_indev_deps="libcdio"
3223 libdc1394_indev_deps="libdc1394"
3224 openal_indev_deps="openal"
3225 opengl_outdev_deps="opengl"
3226 oss_indev_deps_any="sys_soundcard_h"
3227 oss_outdev_deps_any="sys_soundcard_h"
3228 pulse_indev_deps="libpulse"
3229 pulse_outdev_deps="libpulse"
3230 sdl2_outdev_deps="sdl2"
3231 sndio_indev_deps="sndio"
3232 sndio_outdev_deps="sndio"
3233 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3234 v4l2_indev_suggest="libv4l2"
3235 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3236 v4l2_outdev_suggest="libv4l2"
3237 vfwcap_indev_deps="vfw32 vfwcap_defines"
3238 xcbgrab_indev_deps="libxcb"
3239 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3240 xv_outdev_deps="xlib"
3241
3242 # protocols
3243 async_protocol_deps="threads"
3244 bluray_protocol_deps="libbluray"
3245 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3246 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl mbedtls"
3247 ffrtmpcrypt_protocol_select="tcp_protocol"
3248 ffrtmphttp_protocol_conflict="librtmp_protocol"
3249 ffrtmphttp_protocol_select="http_protocol"
3250 ftp_protocol_select="tcp_protocol"
3251 gopher_protocol_select="network"
3252 http_protocol_select="tcp_protocol"
3253 http_protocol_suggest="zlib"
3254 httpproxy_protocol_select="tcp_protocol"
3255 httpproxy_protocol_suggest="zlib"
3256 https_protocol_select="tls_protocol"
3257 https_protocol_suggest="zlib"
3258 icecast_protocol_select="http_protocol"
3259 librtmp_protocol_deps="librtmp"
3260 librtmpe_protocol_deps="librtmp"
3261 librtmps_protocol_deps="librtmp"
3262 librtmpt_protocol_deps="librtmp"
3263 librtmpte_protocol_deps="librtmp"
3264 libsmbclient_protocol_deps="libsmbclient gplv3"
3265 libssh_protocol_deps="libssh"
3266 libtls_conflict="openssl gnutls mbedtls"
3267 mmsh_protocol_select="http_protocol"
3268 mmst_protocol_select="network"
3269 libsrt_protocol_deps="libsrt"
3270 libsrt_protocol_select="network"
3271 rtmp_protocol_conflict="librtmp_protocol"
3272 rtmp_protocol_select="tcp_protocol"
3273 rtmp_protocol_suggest="zlib"
3274 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3275 rtmpe_protocol_suggest="zlib"
3276 rtmps_protocol_conflict="librtmp_protocol"
3277 rtmps_protocol_select="tls_protocol"
3278 rtmps_protocol_suggest="zlib"
3279 rtmpt_protocol_select="ffrtmphttp_protocol"
3280 rtmpt_protocol_suggest="zlib"
3281 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3282 rtmpte_protocol_suggest="zlib"
3283 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3284 rtmpts_protocol_suggest="zlib"
3285 rtp_protocol_select="udp_protocol"
3286 schannel_conflict="openssl gnutls libtls mbedtls"
3287 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3288 sctp_protocol_select="network"
3289 securetransport_conflict="openssl gnutls libtls mbedtls"
3290 srtp_protocol_select="rtp_protocol srtp"
3291 tcp_protocol_select="network"
3292 tls_protocol_deps_any="gnutls openssl schannel securetransport libtls mbedtls"
3293 tls_protocol_select="tcp_protocol"
3294 udp_protocol_select="network"
3295 udplite_protocol_select="network"
3296 unix_protocol_deps="sys_un_h"
3297 unix_protocol_select="network"
3298
3299 # filters
3300 afftfilt_filter_deps="avcodec"
3301 afftfilt_filter_select="fft"
3302 afir_filter_deps="avcodec"
3303 afir_filter_select="fft"
3304 amovie_filter_deps="avcodec avformat"
3305 aresample_filter_deps="swresample"
3306 ass_filter_deps="libass"
3307 atempo_filter_deps="avcodec"
3308 atempo_filter_select="rdft"
3309 avgblur_opencl_filter_deps="opencl"
3310 azmq_filter_deps="libzmq"
3311 blackframe_filter_deps="gpl"
3312 boxblur_filter_deps="gpl"
3313 bs2b_filter_deps="libbs2b"
3314 colormatrix_filter_deps="gpl"
3315 convolution_opencl_filter_deps="opencl"
3316 convolve_filter_deps="avcodec"
3317 convolve_filter_select="fft"
3318 coreimage_filter_deps="coreimage appkit"
3319 coreimage_filter_extralibs="-framework OpenGL"
3320 coreimagesrc_filter_deps="coreimage appkit"
3321 coreimagesrc_filter_extralibs="-framework OpenGL"
3322 cover_rect_filter_deps="avcodec avformat gpl"
3323 cropdetect_filter_deps="gpl"
3324 deconvolve_filter_deps="avcodec"
3325 deconvolve_filter_select="fft"
3326 deinterlace_qsv_filter_deps="libmfx"
3327 deinterlace_vaapi_filter_deps="vaapi"
3328 delogo_filter_deps="gpl"
3329 denoise_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3330 deshake_filter_select="pixelutils"
3331 drawtext_filter_deps="libfreetype"
3332 drawtext_filter_suggest="libfontconfig libfribidi"
3333 elbg_filter_deps="avcodec"
3334 eq_filter_deps="gpl"
3335 fftfilt_filter_deps="avcodec"
3336 fftfilt_filter_select="rdft"
3337 fftdnoiz_filter_deps="avcodec"
3338 fftdnoiz_filter_select="fft"
3339 find_rect_filter_deps="avcodec avformat gpl"
3340 firequalizer_filter_deps="avcodec"
3341 firequalizer_filter_select="rdft"
3342 flite_filter_deps="libflite"
3343 framerate_filter_select="pixelutils"
3344 frei0r_filter_deps="frei0r libdl"
3345 frei0r_src_filter_deps="frei0r libdl"
3346 fspp_filter_deps="gpl"
3347 geq_filter_deps="gpl"
3348 histeq_filter_deps="gpl"
3349 hqdn3d_filter_deps="gpl"
3350 interlace_filter_deps="gpl"
3351 kerndeint_filter_deps="gpl"
3352 ladspa_filter_deps="ladspa libdl"
3353 lv2_filter_deps="lv2"
3354 mcdeint_filter_deps="avcodec gpl"
3355 movie_filter_deps="avcodec avformat"
3356 mpdecimate_filter_deps="gpl"
3357 mpdecimate_filter_select="pixelutils"
3358 mptestsrc_filter_deps="gpl"
3359 negate_filter_deps="lut_filter"
3360 nnedi_filter_deps="gpl"
3361 ocr_filter_deps="libtesseract"
3362 ocv_filter_deps="libopencv"
3363 openclsrc_filter_deps="opencl"
3364 overlay_opencl_filter_deps="opencl"
3365 overlay_qsv_filter_deps="libmfx"
3366 overlay_qsv_filter_select="qsvvpp"
3367 owdenoise_filter_deps="gpl"
3368 pan_filter_deps="swresample"
3369 perspective_filter_deps="gpl"
3370 phase_filter_deps="gpl"
3371 pp7_filter_deps="gpl"
3372 pp_filter_deps="gpl postproc"
3373 procamp_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3374 program_opencl_filter_deps="opencl"
3375 pullup_filter_deps="gpl"
3376 removelogo_filter_deps="avcodec avformat swscale"
3377 repeatfields_filter_deps="gpl"
3378 resample_filter_deps="avresample"
3379 rubberband_filter_deps="librubberband"
3380 sab_filter_deps="gpl swscale"
3381 scale2ref_filter_deps="swscale"
3382 scale_filter_deps="swscale"
3383 scale_qsv_filter_deps="libmfx"
3384 select_filter_select="pixelutils"
3385 sharpness_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3386 showcqt_filter_deps="avcodec avformat swscale"
3387 showcqt_filter_suggest="libfontconfig libfreetype"
3388 showcqt_filter_select="fft"
3389 showfreqs_filter_deps="avcodec"
3390 showfreqs_filter_select="fft"
3391 showspectrum_filter_deps="avcodec"
3392 showspectrum_filter_select="fft"
3393 showspectrumpic_filter_deps="avcodec"
3394 showspectrumpic_filter_select="fft"
3395 signature_filter_deps="gpl avcodec avformat"
3396 smartblur_filter_deps="gpl swscale"
3397 sofalizer_filter_deps="libmysofa avcodec"
3398 sofalizer_filter_select="fft"
3399 spectrumsynth_filter_deps="avcodec"
3400 spectrumsynth_filter_select="fft"
3401 spp_filter_deps="gpl avcodec"
3402 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3403 srcnn_filter_deps="avformat"
3404 srcnn_filter_select="dnn"
3405 stereo3d_filter_deps="gpl"
3406 subtitles_filter_deps="avformat avcodec libass"
3407 super2xsai_filter_deps="gpl"
3408 pixfmts_super2xsai_test_deps="super2xsai_filter"
3409 tinterlace_filter_deps="gpl"
3410 tinterlace_merge_test_deps="tinterlace_filter"
3411 tinterlace_pad_test_deps="tinterlace_filter"
3412 tonemap_filter_deps="const_nan"
3413 unsharp_opencl_filter_deps="opencl"
3414 uspp_filter_deps="gpl avcodec"
3415 vaguedenoiser_filter_deps="gpl"
3416 vidstabdetect_filter_deps="libvidstab"
3417 vidstabtransform_filter_deps="libvidstab"
3418 libvmaf_filter_deps="libvmaf pthreads"
3419 zmq_filter_deps="libzmq"
3420 zoompan_filter_deps="swscale"
3421 zscale_filter_deps="libzimg const_nan"
3422 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3423 vpp_qsv_filter_deps="libmfx"
3424 vpp_qsv_filter_select="qsvvpp"
3425
3426 # examples
3427 avio_dir_cmd_deps="avformat avutil"
3428 avio_reading_deps="avformat avcodec avutil"
3429 decode_audio_example_deps="avcodec avutil"
3430 decode_video_example_deps="avcodec avutil"
3431 demuxing_decoding_example_deps="avcodec avformat avutil"
3432 encode_audio_example_deps="avcodec avutil"
3433 encode_video_example_deps="avcodec avutil"
3434 extract_mvs_example_deps="avcodec avformat avutil"
3435 filter_audio_example_deps="avfilter avutil"
3436 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3437 filtering_video_example_deps="avfilter avcodec avformat avutil"
3438 http_multiclient_example_deps="avformat avutil fork"
3439 hw_decode_example_deps="avcodec avformat avutil"
3440 metadata_example_deps="avformat avutil"
3441 muxing_example_deps="avcodec avformat avutil swscale"
3442 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3443 remuxing_example_deps="avcodec avformat avutil"
3444 resampling_audio_example_deps="avutil swresample"
3445 scaling_video_example_deps="avutil swscale"
3446 transcode_aac_example_deps="avcodec avformat swresample"
3447 transcoding_example_deps="avfilter avcodec avformat avutil"
3448 vaapi_encode_example_deps="avcodec avutil h264_vaapi_encoder"
3449 vaapi_transcode_example_deps="avcodec avformat avutil h264_vaapi_encoder"
3450
3451 # EXTRALIBS_LIST
3452 cpu_init_extralibs="pthreads_extralibs"
3453 cws2fws_extralibs="zlib_extralibs"
3454
3455 # libraries, in linking order
3456 avcodec_deps="avutil"
3457 avcodec_suggest="libm"
3458 avcodec_select="null_bsf"
3459 avdevice_deps="avformat avcodec avutil"
3460 avdevice_suggest="libm"
3461 avfilter_deps="avutil"
3462 avfilter_suggest="libm"
3463 avformat_deps="avcodec avutil"
3464 avformat_suggest="libm network zlib"
3465 avresample_deps="avutil"
3466 avresample_suggest="libm"
3467 avutil_suggest="clock_gettime ffnvcodec libm libdrm libmfx opencl user32 vaapi videotoolbox corefoundation corevideo coremedia bcrypt"
3468 postproc_deps="avutil gpl"
3469 postproc_suggest="libm"
3470 swresample_deps="avutil"
3471 swresample_suggest="libm libsoxr"
3472 swscale_deps="avutil"
3473 swscale_suggest="libm"
3474
3475 avcodec_extralibs="pthreads_extralibs iconv_extralibs"
3476 avfilter_extralibs="pthreads_extralibs"
3477 avutil_extralibs="d3d11va_extralibs nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3478
3479 # programs
3480 ffmpeg_deps="avcodec avfilter avformat"
3481 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3482                null_filter
3483                trim_filter"
3484 ffmpeg_suggest="ole32 psapi shell32"
3485 ffplay_deps="avcodec avformat swscale swresample sdl2"
3486 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3487 ffplay_suggest="shell32"
3488 ffprobe_deps="avcodec avformat"
3489 ffprobe_suggest="shell32"
3490
3491 # documentation
3492 podpages_deps="perl"
3493 manpages_deps="perl pod2man"
3494 htmlpages_deps="perl"
3495 htmlpages_deps_any="makeinfo_html texi2html"
3496 txtpages_deps="perl makeinfo"
3497 doc_deps_any="manpages htmlpages podpages txtpages"
3498
3499 # default parameters
3500
3501 logfile="ffbuild/config.log"
3502
3503 # installation paths
3504 prefix_default="/usr/local"
3505 bindir_default='${prefix}/bin'
3506 datadir_default='${prefix}/share/ffmpeg'
3507 docdir_default='${prefix}/share/doc/ffmpeg'
3508 incdir_default='${prefix}/include'
3509 libdir_default='${prefix}/lib'
3510 mandir_default='${prefix}/share/man'
3511
3512 # toolchain
3513 ar_default="ar"
3514 cc_default="gcc"
3515 cxx_default="g++"
3516 host_cc_default="gcc"
3517 doxygen_default="doxygen"
3518 install="install"
3519 ln_s_default="ln -s -f"
3520 nm_default="nm -g"
3521 pkg_config_default=pkg-config
3522 ranlib_default="ranlib"
3523 strip_default="strip"
3524 version_script='--version-script'
3525 objformat="elf32"
3526 x86asmexe_default="nasm"
3527 windres_default="windres"
3528 nvcc_default="nvcc"
3529 nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
3530 striptype="direct"
3531
3532 # OS
3533 target_os_default=$(tolower $(uname -s))
3534 host_os=$target_os_default
3535
3536 # machine
3537 if test "$target_os_default" = aix; then
3538     arch_default=$(uname -p)
3539     strip_default="strip -X32_64"
3540 else
3541     arch_default=$(uname -m)
3542 fi
3543 cpu="generic"
3544 intrinsics="none"
3545
3546 # configurable options
3547 enable $PROGRAM_LIST
3548 enable $DOCUMENT_LIST
3549 enable $EXAMPLE_LIST
3550 enable $(filter_out avresample $LIBRARY_LIST)
3551 enable stripping
3552
3553 enable asm
3554 enable debug
3555 enable doc
3556 enable faan faandct faanidct
3557 enable optimizations
3558 enable runtime_cpudetect
3559 enable safe_bitstream_reader
3560 enable static
3561 enable swscale_alpha
3562 enable valgrind_backtrace
3563
3564 sws_max_filter_size_default=256
3565 set_default sws_max_filter_size
3566
3567 # internal components are enabled by default
3568 enable $EXTRALIBS_LIST
3569
3570 # Avoid external, non-system, libraries getting enabled by dependency resolution
3571 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3572
3573 # build settings
3574 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3575 LIBPREF="lib"
3576 LIBSUF=".a"
3577 FULLNAME='$(NAME)$(BUILDSUF)'
3578 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3579 SLIBPREF="lib"
3580 SLIBSUF=".so"
3581 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3582 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3583 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3584 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3585 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3586 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3587 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3588
3589 asflags_filter=echo
3590 cflags_filter=echo
3591 ldflags_filter=echo
3592
3593 AS_C='-c'
3594 AS_O='-o $@'
3595 CC_C='-c'
3596 CC_E='-E -o $@'
3597 CC_O='-o $@'
3598 CXX_C='-c'
3599 CXX_O='-o $@'
3600 OBJCC_C='-c'
3601 OBJCC_E='-E -o $@'
3602 OBJCC_O='-o $@'
3603 X86ASM_O='-o $@'
3604 LD_O='-o $@'
3605 LD_LIB='-l%'
3606 LD_PATH='-L'
3607 HOSTCC_C='-c'
3608 HOSTCC_E='-E -o $@'
3609 HOSTCC_O='-o $@'
3610 HOSTLD_O='-o $@'
3611 NVCC_C='-c'
3612 NVCC_O='-o $@'
3613
3614 host_extralibs='-lm'
3615 host_cflags_filter=echo
3616 host_ldflags_filter=echo
3617
3618 target_path='$(CURDIR)'
3619
3620 # since the object filename is not given with the -MM flag, the compiler
3621 # is only able to print the basename, and we must add the path ourselves
3622 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3623 DEPFLAGS='-MM'
3624
3625 mkdir -p ffbuild
3626
3627 # find source path
3628 if test -f configure; then
3629     source_path=.
3630 else
3631     source_path=$(cd $(dirname "$0"); pwd)
3632     case "$source_path" in
3633         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3634     esac
3635     test -e "$source_path/config.h" &&
3636         die "Out of tree builds are impossible with config.h in source dir."
3637 fi
3638
3639 for v in "$@"; do
3640     r=${v#*=}
3641     l=${v%"$r"}
3642     r=$(sh_quote "$r")
3643     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3644 done
3645
3646 find_things_extern(){
3647     thing=$1
3648     pattern=$2
3649     file=$source_path/$3
3650     out=${4:-$thing}
3651     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$out/p" "$file"
3652 }
3653
3654 find_filters_extern(){
3655     file=$source_path/$1
3656     #sed -n "s/^extern AVFilter ff_\([avfsinkrc]\{2,5\}\)_\(\w\+\);/\2_filter/p" $file
3657     sed -E -n "s/^extern AVFilter ff_([avfsinkrc]{2,5})_([a-zA-Z0-9_]+);/\2_filter/p" $file
3658 }
3659
3660 FILTER_LIST=$(find_filters_extern libavfilter/allfilters.c)
3661 OUTDEV_LIST=$(find_things_extern muxer AVOutputFormat libavdevice/alldevices.c outdev)
3662 INDEV_LIST=$(find_things_extern demuxer AVInputFormat libavdevice/alldevices.c indev)
3663 MUXER_LIST=$(find_things_extern muxer AVOutputFormat libavformat/allformats.c)
3664 DEMUXER_LIST=$(find_things_extern demuxer AVInputFormat libavformat/allformats.c)
3665 ENCODER_LIST=$(find_things_extern encoder AVCodec libavcodec/allcodecs.c)
3666 DECODER_LIST=$(find_things_extern decoder AVCodec libavcodec/allcodecs.c)
3667 CODEC_LIST="
3668     $ENCODER_LIST
3669     $DECODER_LIST
3670 "
3671 PARSER_LIST=$(find_things_extern parser AVCodecParser libavcodec/parser.c)
3672 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3673 HWACCEL_LIST=$(find_things_extern hwaccel AVHWAccel libavcodec/hwaccels.h)
3674 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3675
3676 AVCODEC_COMPONENTS_LIST="
3677     $BSF_LIST
3678     $DECODER_LIST
3679     $ENCODER_LIST
3680     $HWACCEL_LIST
3681     $PARSER_LIST
3682 "
3683
3684 AVDEVICE_COMPONENTS_LIST="
3685     $INDEV_LIST
3686     $OUTDEV_LIST
3687 "
3688
3689 AVFILTER_COMPONENTS_LIST="
3690     $FILTER_LIST
3691 "
3692
3693 AVFORMAT_COMPONENTS_LIST="
3694     $DEMUXER_LIST
3695     $MUXER_LIST
3696     $PROTOCOL_LIST
3697 "
3698
3699 ALL_COMPONENTS="
3700     $AVCODEC_COMPONENTS_LIST
3701     $AVDEVICE_COMPONENTS_LIST
3702     $AVFILTER_COMPONENTS_LIST
3703     $AVFORMAT_COMPONENTS_LIST
3704 "
3705
3706 for n in $COMPONENT_LIST; do
3707     v=$(toupper ${n%s})_LIST
3708     eval enable \$$v
3709     eval ${n}_if_any="\$$v"
3710 done
3711
3712 enable $ARCH_EXT_LIST
3713
3714 die_unknown(){
3715     echo "Unknown option \"$1\"."
3716     echo "See $0 --help for available options."
3717     exit 1
3718 }
3719
3720 print_in_columns() {
3721     cols=$(expr $ncols / 24)
3722     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3723 }
3724
3725 show_list() {
3726     suffix=_$1
3727     shift
3728     echo $* | sed s/$suffix//g | print_in_columns
3729     exit 0
3730 }
3731
3732 rand_list(){
3733     IFS=', '
3734     set -- $*
3735     unset IFS
3736     for thing; do
3737         comp=${thing%:*}
3738         prob=${thing#$comp}
3739         prob=${prob#:}
3740         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3741         echo "prob ${prob:-0.5}"
3742         printf '%s\n' $comp
3743     done
3744 }
3745
3746 do_random(){
3747     action=$1
3748     shift
3749     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3750     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3751 }
3752
3753 for opt do
3754     optval="${opt#*=}"
3755     case "$opt" in
3756         --extra-ldflags=*)
3757             add_ldflags $optval
3758         ;;
3759         --extra-ldexeflags=*)
3760             add_ldexeflags $optval
3761         ;;
3762         --extra-ldsoflags=*)
3763             add_ldsoflags $optval
3764         ;;
3765         --extra-ldlibflags=*)
3766             warn "The --extra-ldlibflags option is only provided for compatibility and will be\n"\
3767                  "removed in the future. Use --extra-ldsoflags instead."
3768             add_ldsoflags $optval
3769         ;;
3770         --extra-libs=*)
3771             add_extralibs $optval
3772         ;;
3773         --disable-devices)
3774             disable $INDEV_LIST $OUTDEV_LIST
3775         ;;
3776         --enable-debug=*)
3777             debuglevel="$optval"
3778         ;;
3779         --disable-programs)
3780             disable $PROGRAM_LIST
3781         ;;
3782         --disable-everything)
3783             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3784         ;;
3785         --disable-all)
3786             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3787             disable $LIBRARY_LIST $PROGRAM_LIST doc
3788             enable avutil
3789         ;;
3790         --enable-random|--disable-random)
3791             action=${opt%%-random}
3792             do_random ${action#--} $COMPONENT_LIST
3793         ;;
3794         --enable-random=*|--disable-random=*)
3795             action=${opt%%-random=*}
3796             do_random ${action#--} $optval
3797         ;;
3798         --enable-sdl)
3799             enable sdl2
3800         ;;
3801         --enable-*=*|--disable-*=*)
3802             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3803             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3804             eval list=\$$(toupper $thing)_LIST
3805             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3806             list=$(filter "$name" $list)
3807             [ "$list" = "" ] && warn "Option $opt did not match anything"
3808             $action $list
3809         ;;
3810         --enable-yasm|--disable-yasm)
3811             warn "The ${opt} option is only provided for compatibility and will be\n"\
3812                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3813             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3814         ;;
3815         --yasmexe=*)
3816             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3817                  "removed in the future. Use --x86asmexe instead."
3818             x86asmexe="$optval"
3819         ;;
3820         --enable-?*|--disable-?*)
3821             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3822             if is_in $option $COMPONENT_LIST; then
3823                 test $action = disable && action=unset
3824                 eval $action \$$(toupper ${option%s})_LIST
3825             elif is_in $option $CMDLINE_SELECT; then
3826                 $action $option
3827             else
3828                 die_unknown $opt
3829             fi
3830         ;;
3831         --list-*)
3832             NAME="${opt#--list-}"
3833             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3834             NAME=${NAME%s}
3835             eval show_list $NAME \$$(toupper $NAME)_LIST
3836         ;;
3837         --help|-h) show_help
3838         ;;
3839         --quiet|-q) quiet=yes
3840         ;;
3841         --fatal-warnings) enable fatal_warnings
3842         ;;
3843         --libfuzzer=*)
3844             libfuzzer_path="$optval"
3845         ;;
3846         *)
3847             optname="${opt%%=*}"
3848             optname="${optname#--}"
3849             optname=$(echo "$optname" | sed 's/-/_/g')
3850             if is_in $optname $CMDLINE_SET; then
3851                 eval $optname='$optval'
3852             elif is_in $optname $CMDLINE_APPEND; then
3853                 append $optname "$optval"
3854             else
3855                 die_unknown $opt
3856             fi
3857         ;;
3858     esac
3859 done
3860
3861 for e in $env; do
3862     eval "export $e"
3863 done
3864
3865 if disabled autodetect; then
3866
3867     # Unless iconv is explicitely disabled by the user, we still want to probe
3868     # for the iconv from the libc.
3869     disabled iconv || enable libc_iconv
3870
3871     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3872     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3873 fi
3874 # Mark specifically enabled, but normally autodetected libraries as requested.
3875 for lib in $AUTODETECT_LIBS; do
3876     enabled $lib && request $lib
3877 done
3878 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
3879 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3880 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3881
3882 disabled logging && logfile=/dev/null
3883
3884 # command line configuration sanity checks
3885
3886 # we need to build at least one lib type
3887 if ! enabled_any static shared; then
3888     cat <<EOF
3889 At least one library type must be built.
3890 Specify --enable-static to build the static libraries or --enable-shared to
3891 build the shared libraries as well. To only build the shared libraries specify
3892 --disable-static in addition to --enable-shared.
3893 EOF
3894     exit 1
3895 fi
3896
3897 die_license_disabled() {
3898     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3899 }
3900
3901 die_license_disabled_gpl() {
3902     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3903 }
3904
3905 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3906 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3907
3908 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3909 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3910
3911 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3912
3913 if enabled nonfree; then
3914     license="nonfree and unredistributable"
3915 elif enabled gplv3; then
3916     license="GPL version 3 or later"
3917 elif enabled lgplv3; then
3918     license="LGPL version 3 or later"
3919 elif enabled gpl; then
3920     license="GPL version 2 or later"
3921 else
3922     license="LGPL version 2.1 or later"
3923 fi
3924
3925 enabled_all gnutls openssl &&
3926     die "GnuTLS and OpenSSL must not be enabled at the same time."
3927
3928 enabled_all gnutls mbedtls &&
3929     die "GnuTLS and mbedTLS must not be enabled at the same time."
3930
3931 enabled_all openssl mbedtls &&
3932     die "OpenSSL and mbedTLS must not be enabled at the same time."
3933
3934 # Disable all the library-specific components if the library itself
3935 # is disabled, see AVCODEC_LIST and following _LIST variables.
3936
3937 disable_components(){
3938     disabled ${1} && disable $(
3939         eval components="\$$(toupper ${1})_COMPONENTS"
3940         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3941     )
3942 }
3943
3944 map 'disable_components $v' $LIBRARY_LIST
3945
3946 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3947 set >> $logfile
3948
3949 test -n "$valgrind" && toolchain="valgrind-memcheck"
3950
3951 enabled ossfuzz && ! echo $CFLAGS | grep -q -- "-fsanitize="  &&{
3952     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
3953     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
3954 }
3955
3956 case "$toolchain" in
3957     *-asan)
3958         cc_default="${toolchain%-asan}"
3959         add_cflags  -fsanitize=address
3960         add_ldflags -fsanitize=address
3961     ;;
3962     *-msan)
3963         cc_default="${toolchain%-msan}"
3964         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3965         add_ldflags -fsanitize=memory
3966     ;;
3967     *-tsan)
3968         cc_default="${toolchain%-tsan}"
3969         add_cflags  -fsanitize=thread -fPIE
3970         add_ldflags -fsanitize=thread -pie
3971         case "$toolchain" in
3972             gcc-tsan)
3973                 add_cflags  -fPIC
3974                 add_ldflags -fPIC
3975                 ;;
3976         esac
3977     ;;
3978     *-usan)
3979         cc_default="${toolchain%-usan}"
3980         add_cflags  -fsanitize=undefined
3981         add_ldflags -fsanitize=undefined
3982     ;;
3983     valgrind-*)
3984         target_exec_default="valgrind"
3985         case "$toolchain" in
3986             valgrind-massif)
3987                 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"
3988                 ;;
3989             valgrind-memcheck)
3990                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3991                 ;;
3992         esac
3993     ;;
3994     msvc)
3995         # Check whether the current MSVC version needs the C99 converter.
3996         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3997         # support enough of C99 to build ffmpeg. Default to the new
3998         # behaviour if the regexp was unable to match anything, since this
3999         # successfully parses the version number of existing supported
4000         # versions that require the converter (MSVC 2010 and 2012).
4001         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
4002         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
4003             cc_default="cl"
4004             cxx_default="cl"
4005         else
4006             die "Unsupported MSVC version (2013 or newer required)"
4007         fi
4008         ld_default="$source_path/compat/windows/mslink"
4009         nm_default="dumpbin -symbols"
4010         ar_default="lib"
4011         case "$arch" in
4012         aarch64|arm64)
4013             as_default="armasm64"
4014             ;;
4015         arm*)
4016             as_default="armasm"
4017             ;;
4018         esac
4019         target_os_default="win32"
4020         # Use a relative path for TMPDIR. This makes sure all the
4021         # ffconf temp files are written with a relative path, avoiding
4022         # issues with msys/win32 path conversion for MSVC parameters
4023         # such as -Fo<file> or -out:<file>.
4024         TMPDIR=.
4025     ;;
4026     icl)
4027         cc_default="icl"
4028         ld_default="xilink"
4029         nm_default="dumpbin -symbols"
4030         ar_default="xilib"
4031         target_os_default="win32"
4032         TMPDIR=.
4033     ;;
4034     gcov)
4035         add_cflags  -fprofile-arcs -ftest-coverage
4036         add_ldflags -fprofile-arcs -ftest-coverage
4037     ;;
4038     llvm-cov)
4039         add_cflags -fprofile-arcs -ftest-coverage
4040         add_ldflags --coverage
4041     ;;
4042     hardened)
4043         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
4044         add_cflags   -fno-strict-overflow -fstack-protector-all
4045         add_ldflags  -Wl,-z,relro -Wl,-z,now
4046         add_cflags   -fPIE
4047         add_ldexeflags -fPIE -pie
4048     ;;
4049     ?*)
4050         die "Unknown toolchain $toolchain"
4051     ;;
4052 esac
4053
4054 if test -n "$cross_prefix"; then
4055     test -n "$arch" && test -n "$target_os" ||
4056         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
4057     enable cross_compile
4058 fi
4059
4060 ar_default="${cross_prefix}${ar_default}"
4061 cc_default="${cross_prefix}${cc_default}"
4062 cxx_default="${cross_prefix}${cxx_default}"
4063 nm_default="${cross_prefix}${nm_default}"
4064 pkg_config_default="${cross_prefix}${pkg_config_default}"
4065 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
4066     ranlib_default="${cross_prefix}${ranlib_default} -D"
4067 else
4068     ranlib_default="${cross_prefix}${ranlib_default}"
4069 fi
4070 strip_default="${cross_prefix}${strip_default}"
4071 windres_default="${cross_prefix}${windres_default}"
4072
4073 sysinclude_default="${sysroot}/usr/include"
4074
4075 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
4076     target_exec target_os x86asmexe nvcc
4077 enabled cross_compile || host_cc_default=$cc
4078 set_default host_cc
4079
4080 pkg_config_fail_message=""
4081 if ! $pkg_config --version >/dev/null 2>&1; then
4082     warn "$pkg_config not found, library detection may fail."
4083     pkg_config=false
4084 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
4085     pkg_config_fail_message="
4086 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
4087 fi
4088
4089 if test $doxygen != $doxygen_default && \
4090   ! $doxygen --version >/dev/null 2>&1; then
4091     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
4092 fi
4093
4094 exesuf() {
4095     case $1 in
4096         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
4097     esac
4098 }
4099
4100 EXESUF=$(exesuf $target_os)
4101 HOSTEXESUF=$(exesuf $host_os)
4102
4103 # set temporary file name
4104 : ${TMPDIR:=$TEMPDIR}
4105 : ${TMPDIR:=$TMP}
4106 : ${TMPDIR:=/tmp}
4107
4108 if [ -n "$tempprefix" ] ; then
4109     mktemp(){
4110         tmpname="$tempprefix.${HOSTNAME}.${UID}"
4111         echo "$tmpname"
4112         mkdir "$tmpname"
4113     }
4114 elif ! test_cmd mktemp -u XXXXXX; then
4115     # simple replacement for missing mktemp
4116     # NOT SAFE FOR GENERAL USE
4117     mktemp(){
4118         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
4119         echo "$tmpname"
4120         mkdir "$tmpname"
4121     }
4122 fi
4123
4124 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
4125     die "Unable to create temporary directory in $TMPDIR."
4126
4127 tmpfile(){
4128     tmp="${FFTMPDIR}/test"$2
4129     (set -C; exec > $tmp) 2> /dev/null ||
4130         die "Unable to create temporary file in $FFTMPDIR."
4131     eval $1=$tmp
4132 }
4133
4134 trap 'rm -rf -- "$FFTMPDIR"' EXIT
4135 trap 'exit 2' INT
4136
4137 tmpfile TMPASM .asm
4138 tmpfile TMPC   .c
4139 tmpfile TMPCPP .cpp
4140 tmpfile TMPE   $EXESUF
4141 tmpfile TMPH   .h
4142 tmpfile TMPM   .m
4143 tmpfile TMPO   .o
4144 tmpfile TMPS   .S
4145 tmpfile TMPSH  .sh
4146 tmpfile TMPV   .ver
4147
4148 unset -f mktemp
4149
4150 chmod +x $TMPE
4151
4152 # make sure we can execute files in $TMPDIR
4153 cat > $TMPSH 2>> $logfile <<EOF
4154 #! /bin/sh
4155 EOF
4156 chmod +x $TMPSH >> $logfile 2>&1
4157 if ! $TMPSH >> $logfile 2>&1; then
4158     cat <<EOF
4159 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
4160 variable to another directory and make sure that it is not mounted noexec.
4161 EOF
4162     die "Sanity test failed."
4163 fi
4164
4165 armasm_flags(){
4166     for flag; do
4167         case $flag in
4168             # Filter out MSVC cl.exe options from cflags that shouldn't
4169             # be passed to gas-preprocessor
4170             -M[TD]*)                                            ;;
4171             *)                  echo $flag                      ;;
4172         esac
4173    done
4174 }
4175
4176 cparser_flags(){
4177     for flag; do
4178         case $flag in
4179             -Wno-switch)             echo -Wno-switch-enum ;;
4180             -Wno-format-zero-length) ;;
4181             -Wdisabled-optimization) ;;
4182             -Wno-pointer-sign)       echo -Wno-other ;;
4183             *)                       echo $flag ;;
4184         esac
4185     done
4186 }
4187
4188 msvc_common_flags(){
4189     for flag; do
4190         case $flag in
4191             # In addition to specifying certain flags under the compiler
4192             # specific filters, they must be specified here as well or else the
4193             # generic catch all at the bottom will print the original flag.
4194             -Wall)                ;;
4195             -Wextra)              ;;
4196             -std=c99)             ;;
4197             # Common flags
4198             -fomit-frame-pointer) ;;
4199             -g)                   echo -Z7 ;;
4200             -fno-math-errno)      ;;
4201             -fno-common)          ;;
4202             -fno-signed-zeros)    ;;
4203             -fPIC)                ;;
4204             -mthumb)              ;;
4205             -march=*)             ;;
4206             -lz)                  echo zlib.lib ;;
4207             -lx264)               echo libx264.lib ;;
4208             -lstdc++)             ;;
4209             -l*)                  echo ${flag#-l}.lib ;;
4210             -LARGEADDRESSAWARE)   echo $flag ;;
4211             -L*)                  echo -libpath:${flag#-L} ;;
4212             *)                    echo $flag ;;
4213         esac
4214     done
4215 }
4216
4217 msvc_flags(){
4218     msvc_common_flags "$@"
4219     for flag; do
4220         case $flag in
4221             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4222                                        -wd4554 ;;
4223             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4224                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4225                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4226                                        -wd4307 \
4227                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4228         esac
4229     done
4230 }
4231
4232 icl_flags(){
4233     msvc_common_flags "$@"
4234     for flag; do
4235         case $flag in
4236             # Despite what Intel's documentation says -Wall, which is supported
4237             # on Windows, does enable remarks so disable them here.
4238             -Wall)                echo $flag -Qdiag-disable:remark ;;
4239             -std=c99)             echo -Qstd=c99 ;;
4240             -flto)                echo -ipo ;;
4241         esac
4242     done
4243 }
4244
4245 icc_flags(){
4246     for flag; do
4247         case $flag in
4248             -flto)                echo -ipo ;;
4249             *)                    echo $flag ;;
4250         esac
4251     done
4252 }
4253
4254 suncc_flags(){
4255     for flag; do
4256         case $flag in
4257             -march=*|-mcpu=*)
4258                 case "${flag#*=}" in
4259                     native)                   echo -xtarget=native       ;;
4260                     v9|niagara)               echo -xarch=sparc          ;;
4261                     ultrasparc)               echo -xarch=sparcvis       ;;
4262                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4263                     i586|pentium)             echo -xchip=pentium        ;;
4264                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4265                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4266                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4267                     pentium4*)          echo -xtarget=pentium4           ;;
4268                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4269                     *-sse3)             echo -xarch=sse3                 ;;
4270                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4271                     bonnell)                   echo -xarch=ssse3         ;;
4272                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4273                     westmere)                  echo -xtarget=westmere    ;;
4274                     silvermont)                echo -xarch=sse4_2        ;;
4275                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4276                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4277                                                echo -xarch=avx           ;;
4278                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4279                     btver1)                    echo -xarch=amdsse4a      ;;
4280                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4281                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4282                     k8|opteron|athlon64|athlon-fx)
4283                                                echo -xarch=sse2a         ;;
4284                     athlon*)                   echo -xarch=pentium_proa  ;;
4285                 esac
4286                 ;;
4287             -std=c99)             echo -xc99              ;;
4288             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4289             -fPIC)                echo -KPIC -xcode=pic32 ;;
4290             -W*,*)                echo $flag              ;;
4291             -f*-*|-W*|-mimpure-text)                      ;;
4292             -shared)              echo -G                 ;;
4293             *)                    echo $flag              ;;
4294         esac
4295     done
4296 }
4297
4298 probe_cc(){
4299     pfx=$1
4300     _cc=$2
4301     first=$3
4302
4303     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4304     unset _ld_o _ldflags _ld_lib _ld_path
4305     unset _depflags _DEPCMD _DEPFLAGS
4306     _flags_filter=echo
4307
4308     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4309         true # no-op to avoid reading stdin in following checks
4310     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4311         _type=llvm_gcc
4312         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4313         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4314         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4315         _cflags_speed='-O3'
4316         _cflags_size='-Os'
4317     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4318         _type=gcc
4319         gcc_version=$($_cc --version | head -n1)
4320         gcc_basever=$($_cc -dumpversion)
4321         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4322         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4323         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4324         case $gcc_basever in
4325             2) ;;
4326             2.*) ;;
4327             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4328         esac
4329         if [ "$first" = true ]; then
4330             case $gcc_basever in
4331                 4.2*)
4332                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4333             esac
4334         fi
4335         _cflags_speed='-O3'
4336         _cflags_size='-Os'
4337     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4338         _type=icc
4339         _ident=$($_cc --version | head -n1)
4340         _depflags='-MMD'
4341         _cflags_speed='-O3'
4342         _cflags_size='-Os'
4343         _cflags_noopt='-O1'
4344         _flags_filter=icc_flags
4345     elif $_cc -v 2>&1 | grep -q xlc; then
4346         _type=xlc
4347         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4348         _cflags_speed='-O5'
4349         _cflags_size='-O5 -qcompact'
4350     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4351         test -d "$sysroot" || die "No valid sysroot specified."
4352         _type=armcc
4353         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4354         armcc_conf="$PWD/armcc.conf"
4355         $_cc --arm_linux_configure                 \
4356              --arm_linux_config_file="$armcc_conf" \
4357              --configure_sysroot="$sysroot"        \
4358              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4359              die "Error creating armcc configuration file."
4360         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4361         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4362         as_default="${cross_prefix}gcc"
4363         _depflags='-MMD'
4364         _cflags_speed='-O3'
4365         _cflags_size='-Os'
4366     elif $_cc -v 2>&1 | grep -q clang && ! $_cc -? > /dev/null 2>&1; then
4367         _type=clang
4368         _ident=$($_cc --version 2>/dev/null | head -n1)
4369         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4370         _cflags_speed='-O3'
4371         _cflags_size='-Oz'
4372     elif $_cc -V 2>&1 | grep -q Sun; then
4373         _type=suncc
4374         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4375         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4376         _DEPFLAGS='-xM1 -xc99'
4377         _ldflags='-std=c99'
4378         _cflags_speed='-O5'
4379         _cflags_size='-O5 -xspace'
4380         _flags_filter=suncc_flags
4381     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4382         _type=pathscale
4383         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4384         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4385         _cflags_speed='-O2'
4386         _cflags_size='-Os'
4387         _flags_filter='filter_out -Wdisabled-optimization'
4388     elif $_cc -v 2>&1 | grep -q Open64; then
4389         _type=open64
4390         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4391         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4392         _cflags_speed='-O2'
4393         _cflags_size='-Os'
4394         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4395     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4396         _type=armasm
4397         _ident=$($_cc | head -n1)
4398         # 4509: "This form of conditional instruction is deprecated"
4399         _flags="-nologo -ignore 4509"
4400         _flags_filter=armasm_flags
4401     elif $_cc 2>&1 | grep -q Intel; then
4402         _type=icl
4403         _ident=$($_cc 2>&1 | head -n1)
4404         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4405         # Not only is O3 broken on 13.x+ but it is slower on all previous
4406         # versions (tested) as well.
4407         _cflags_speed="-O2"
4408         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4409         if $_cc 2>&1 | grep -q Linker; then
4410             _ld_o='-out:$@'
4411         else
4412             _ld_o='-Fe$@'
4413         fi
4414         _cc_o='-Fo$@'
4415         _cc_e='-P'
4416         _flags_filter=icl_flags
4417         _ld_lib='lib%.a'
4418         _ld_path='-libpath:'
4419         # -Qdiag-error to make icl error when seeing certain unknown arguments
4420         _flags='-nologo -Qdiag-error:4044,10157'
4421         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4422         # with MSVC which enables it by default.
4423         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4424         disable stripping
4425     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4426         # lld can emulate multiple different linkers; in ms link.exe mode,
4427         # the -? parameter gives the help output which contains an identifyable
4428         # string, while it gives an error in other modes.
4429         _type=lld-link
4430         # The link.exe mode doesn't have a switch for getting the version,
4431         # but we can force it back to gnu mode and get the version from there.
4432         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4433         _ld_o='-out:$@'
4434         _flags_filter=msvc_flags
4435         _ld_lib='lib%.a'
4436         _ld_path='-libpath:'
4437     elif $_cc -nologo- 2>&1 | grep -q Microsoft || { $_cc -v 2>&1 | grep -q clang && $_cc -? > /dev/null 2>&1; }; then
4438         _type=msvc
4439         _ident=$($_cc 2>&1 | head -n1 | tr -d '\r')
4440         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4441         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4442         _cflags_speed="-O2"
4443         _cflags_size="-O1"
4444         _cflags_noopt="-O1"
4445         if $_cc -nologo- 2>&1 | grep -q Linker; then
4446             _ld_o='-out:$@'
4447         else
4448             _ld_o='-Fe$@'
4449         fi
4450         _cc_o='-Fo$@'
4451         _cc_e='-P -Fi$@'
4452         _flags_filter=msvc_flags
4453         _ld_lib='lib%.a'
4454         _ld_path='-libpath:'
4455         _flags='-nologo'
4456         disable stripping
4457     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4458         _type=cparser
4459         _ident=$($_cc --version | head -n1)
4460         _depflags='-MMD'
4461         _cflags_speed='-O4'
4462         _cflags_size='-O2'
4463         _flags_filter=cparser_flags
4464     fi
4465
4466     eval ${pfx}_type=\$_type
4467     eval ${pfx}_ident=\$_ident
4468 }
4469
4470 set_ccvars(){
4471     eval ${1}_C=\${_cc_c-\${${1}_C}}
4472     eval ${1}_E=\${_cc_e-\${${1}_E}}
4473     eval ${1}_O=\${_cc_o-\${${1}_O}}
4474
4475     if [ -n "$_depflags" ]; then
4476         eval ${1}_DEPFLAGS=\$_depflags
4477     else
4478         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4479         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4480         eval DEP${1}FLAGS=\$_flags
4481     fi
4482 }
4483
4484 probe_cc cc "$cc" "true"
4485 cflags_filter=$_flags_filter
4486 cflags_speed=$_cflags_speed
4487 cflags_size=$_cflags_size
4488 cflags_noopt=$_cflags_noopt
4489 add_cflags $_flags $_cflags
4490 cc_ldflags=$_ldflags
4491 set_ccvars CC
4492 set_ccvars CXX
4493
4494 probe_cc hostcc "$host_cc"
4495 host_cflags_filter=$_flags_filter
4496 host_cflags_speed=$_cflags_speed
4497 add_host_cflags  $_flags $_cflags
4498 set_ccvars HOSTCC
4499
4500 test -n "$cc_type" && enable $cc_type ||
4501     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4502
4503 : ${as_default:=$cc}
4504 : ${objcc_default:=$cc}
4505 : ${dep_cc_default:=$cc}
4506 : ${ld_default:=$cc}
4507 : ${host_ld_default:=$host_cc}
4508 set_default ar as objcc dep_cc ld ln_s host_ld windres
4509
4510 probe_cc as "$as"
4511 asflags_filter=$_flags_filter
4512 add_asflags $_flags $_cflags
4513 set_ccvars AS
4514
4515 probe_cc objcc "$objcc"
4516 objcflags_filter=$_flags_filter
4517 add_objcflags $_flags $_cflags
4518 set_ccvars OBJC
4519
4520 probe_cc ld "$ld"
4521 ldflags_filter=$_flags_filter
4522 add_ldflags $_flags $_ldflags
4523 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4524 LD_O=${_ld_o-$LD_O}
4525 LD_LIB=${_ld_lib-$LD_LIB}
4526 LD_PATH=${_ld_path-$LD_PATH}
4527
4528 probe_cc hostld "$host_ld"
4529 host_ldflags_filter=$_flags_filter
4530 add_host_ldflags $_flags $_ldflags
4531 HOSTLD_O=${_ld_o-$HOSTLD_O}
4532
4533 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4534     probe_cc depcc "$dep_cc"
4535     CCDEP=${_DEPCMD:-$DEPCMD}
4536     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4537     DEPCCFLAGS=$_flags
4538 fi
4539
4540 if $ar 2>&1 | grep -q Microsoft; then
4541     arflags="-nologo"
4542     ar_o='-out:$@'
4543 elif $ar 2>&1 | grep -q "\[D\] "; then
4544     arflags="rcD"
4545     ar_o='$@'
4546 else
4547     arflags="rc"
4548     ar_o='$@'
4549 fi
4550
4551 add_cflags $extra_cflags
4552 add_cxxflags $extra_cxxflags
4553 add_objcflags $extra_objcflags
4554 add_asflags $extra_cflags
4555
4556 if test -n "$sysroot"; then
4557     case "$cc_type" in
4558         gcc|llvm_gcc|clang)
4559             add_cppflags --sysroot="$sysroot"
4560             add_ldflags --sysroot="$sysroot"
4561         ;;
4562     esac
4563 fi
4564
4565 if test "$cpu" = host; then
4566     enabled cross_compile &&
4567         die "--cpu=host makes no sense when cross-compiling."
4568
4569     case "$cc_type" in
4570         gcc|llvm_gcc)
4571             check_native(){
4572                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4573                 sed -n "/cc1.*$1=/{
4574                             s/.*$1=\\([^ ]*\\).*/\\1/
4575                             p
4576                             q
4577                         }" $TMPE
4578             }
4579             cpu=$(check_native -march || check_native -mcpu)
4580         ;;
4581         clang)
4582             check_native(){
4583                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4584                 sed -n "/cc1.*-target-cpu /{
4585                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4586                             p
4587                             q
4588                         }" $TMPE
4589             }
4590             cpu=$(check_native -march)
4591         ;;
4592     esac
4593
4594     test "${cpu:-host}" = host &&
4595         die "--cpu=host not supported with compiler $cc"
4596 fi
4597
4598 # Deal with common $arch aliases
4599 case "$arch" in
4600     aarch64|arm64)
4601         arch="aarch64"
4602     ;;
4603     arm*|iPad*|iPhone*)
4604         arch="arm"
4605     ;;
4606     mips*|IP*)
4607         case "$arch" in
4608         *el)
4609             add_cppflags -EL
4610             add_ldflags -EL
4611         ;;
4612         *eb)
4613             add_cppflags -EB
4614             add_ldflags -EB
4615         ;;
4616         esac
4617         arch="mips"
4618     ;;
4619     parisc*|hppa*)
4620         arch="parisc"
4621     ;;
4622     "Power Macintosh"|ppc*|powerpc*)
4623         arch="ppc"
4624     ;;
4625     s390|s390x)
4626         arch="s390"
4627     ;;
4628     sh4|sh)
4629         arch="sh4"
4630     ;;
4631     sun4*|sparc*)
4632         arch="sparc"
4633     ;;
4634     tilegx|tile-gx)
4635         arch="tilegx"
4636     ;;
4637     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4638         arch="x86"
4639     ;;
4640 esac
4641
4642 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4643 enable $arch
4644
4645 # Add processor-specific flags
4646 if enabled aarch64; then
4647
4648     case $cpu in
4649         armv*)
4650             cpuflags="-march=$cpu"
4651         ;;
4652         *)
4653             cpuflags="-mcpu=$cpu"
4654         ;;
4655     esac
4656
4657 elif enabled alpha; then
4658
4659     cpuflags="-mcpu=$cpu"
4660
4661 elif enabled arm; then
4662
4663     check_arm_arch() {
4664         test_cpp_condition stddef.h \
4665             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4666             $cpuflags
4667     }
4668
4669     probe_arm_arch() {
4670         if   check_arm_arch 4;        then echo armv4
4671         elif check_arm_arch 4T;       then echo armv4t
4672         elif check_arm_arch 5;        then echo armv5
4673         elif check_arm_arch 5E;       then echo armv5e
4674         elif check_arm_arch 5T;       then echo armv5t
4675         elif check_arm_arch 5TE;      then echo armv5te
4676         elif check_arm_arch 5TEJ;     then echo armv5te
4677         elif check_arm_arch 6;        then echo armv6
4678         elif check_arm_arch 6J;       then echo armv6j
4679         elif check_arm_arch 6K;       then echo armv6k
4680         elif check_arm_arch 6Z;       then echo armv6z
4681         elif check_arm_arch 6KZ;      then echo armv6zk
4682         elif check_arm_arch 6ZK;      then echo armv6zk
4683         elif check_arm_arch 6T2;      then echo armv6t2
4684         elif check_arm_arch 7;        then echo armv7
4685         elif check_arm_arch 7A  7_A;  then echo armv7-a
4686         elif check_arm_arch 7S;       then echo armv7-a
4687         elif check_arm_arch 7R  7_R;  then echo armv7-r
4688         elif check_arm_arch 7M  7_M;  then echo armv7-m
4689         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4690         elif check_arm_arch 8A  8_A;  then echo armv8-a
4691         fi
4692     }
4693
4694     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4695
4696     case $cpu in
4697         armv*)
4698             cpuflags="-march=$cpu"
4699             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4700         ;;
4701         *)
4702             cpuflags="-mcpu=$cpu"
4703             case $cpu in
4704                 cortex-a*)                               subarch=armv7a  ;;
4705                 cortex-r*)                               subarch=armv7r  ;;
4706                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4707                 arm11*)                                  subarch=armv6   ;;
4708                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4709                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4710                 *)                             subarch=$(probe_arm_arch) ;;
4711             esac
4712         ;;
4713     esac
4714
4715     case "$subarch" in
4716         armv5t*)    enable fast_clz                ;;
4717         armv[6-8]*)
4718             enable fast_clz
4719             disabled fast_unaligned || enable fast_unaligned
4720             ;;
4721     esac
4722
4723 elif enabled avr32; then
4724
4725     case $cpu in
4726         ap7[02]0[0-2])
4727             subarch="avr32_ap"
4728             cpuflags="-mpart=$cpu"
4729         ;;
4730         ap)
4731             subarch="avr32_ap"
4732             cpuflags="-march=$cpu"
4733         ;;
4734         uc3[ab]*)
4735             subarch="avr32_uc"
4736             cpuflags="-mcpu=$cpu"
4737         ;;
4738         uc)
4739             subarch="avr32_uc"
4740             cpuflags="-march=$cpu"
4741         ;;
4742     esac
4743
4744 elif enabled bfin; then
4745
4746     cpuflags="-mcpu=$cpu"
4747
4748 elif enabled mips; then
4749
4750     cpuflags="-march=$cpu"
4751
4752     if [ "$cpu" != "generic" ]; then
4753         disable mips32r2
4754         disable mips32r5
4755         disable mips64r2
4756         disable mips32r6
4757         disable mips64r6
4758         disable loongson2
4759         disable loongson3
4760
4761         case $cpu in
4762             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4763                 enable mips32r2
4764                 disable msa
4765             ;;
4766             p5600|i6400|p6600)
4767                 disable mipsdsp
4768                 disable mipsdspr2
4769             ;;
4770             loongson*)
4771                 enable loongson2
4772                 enable loongson3
4773                 enable local_aligned
4774                 enable simd_align_16
4775                 enable fast_64bit
4776                 enable fast_clz
4777                 enable fast_cmov
4778                 enable fast_unaligned
4779                 disable aligned_stack
4780                 disable mipsfpu
4781                 disable mipsdsp
4782                 disable mipsdspr2
4783                 case $cpu in
4784                     loongson3*)
4785                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4786                     ;;
4787                     loongson2e)
4788                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4789                     ;;
4790                     loongson2f)
4791                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4792                     ;;
4793                 esac
4794             ;;
4795             *)
4796                 # Unknown CPU. Disable everything.
4797                 warn "unknown CPU. Disabling all MIPS optimizations."
4798                 disable mipsfpu
4799                 disable mipsdsp
4800                 disable mipsdspr2
4801                 disable msa
4802                 disable mmi
4803             ;;
4804         esac
4805
4806         case $cpu in
4807             24kc)
4808                 disable mipsfpu
4809                 disable mipsdsp
4810                 disable mipsdspr2
4811             ;;
4812             24kf*)
4813                 disable mipsdsp
4814                 disable mipsdspr2
4815             ;;
4816             24kec|34kc|1004kc)
4817                 disable mipsfpu
4818                 disable mipsdspr2
4819             ;;
4820             24kef*|34kf*|1004kf*)
4821                 disable mipsdspr2
4822             ;;
4823             74kc)
4824                 disable mipsfpu
4825             ;;
4826             p5600)
4827                 enable mips32r5
4828                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4829             ;;
4830             i6400)
4831                 enable mips64r6
4832                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4833             ;;
4834             p6600)
4835                 enable mips64r6
4836                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4837             ;;
4838         esac
4839     else
4840         # We do not disable anything. Is up to the user to disable the unwanted features.
4841         warn 'generic cpu selected'
4842     fi
4843
4844 elif enabled ppc; then
4845
4846     disable ldbrx
4847
4848     case $(tolower $cpu) in
4849         601|ppc601|powerpc601)
4850             cpuflags="-mcpu=601"
4851             disable altivec
4852         ;;
4853         603*|ppc603*|powerpc603*)
4854             cpuflags="-mcpu=603"
4855             disable altivec
4856         ;;
4857         604*|ppc604*|powerpc604*)
4858             cpuflags="-mcpu=604"
4859             disable altivec
4860         ;;
4861         g3|75*|ppc75*|powerpc75*)
4862             cpuflags="-mcpu=750"
4863             disable altivec
4864         ;;
4865         g4|745*|ppc745*|powerpc745*)
4866             cpuflags="-mcpu=7450"
4867             disable vsx
4868         ;;
4869         74*|ppc74*|powerpc74*)
4870             cpuflags="-mcpu=7400"
4871             disable vsx
4872         ;;
4873         g5|970|ppc970|powerpc970)
4874             cpuflags="-mcpu=970"
4875             disable vsx
4876         ;;
4877         power[3-6]*)
4878             cpuflags="-mcpu=$cpu"
4879             disable vsx
4880         ;;
4881         power[7-8]*)
4882             cpuflags="-mcpu=$cpu"
4883         ;;
4884         cell)
4885             cpuflags="-mcpu=cell"
4886             enable ldbrx
4887             disable vsx
4888         ;;
4889         e500mc)
4890             cpuflags="-mcpu=e500mc"
4891             disable altivec
4892         ;;
4893         e500v2)
4894             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4895             disable altivec
4896             disable dcbzl
4897         ;;
4898         e500)
4899             cpuflags="-mcpu=8540 -mhard-float"
4900             disable altivec
4901             disable dcbzl
4902         ;;
4903     esac
4904
4905 elif enabled sparc; then
4906
4907     case $cpu in
4908         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4909             cpuflags="-mcpu=$cpu"
4910         ;;
4911         ultrasparc*|niagara[234])
4912             cpuflags="-mcpu=$cpu"
4913         ;;
4914     esac
4915
4916 elif enabled x86; then
4917
4918     case $cpu in
4919         i[345]86|pentium)
4920             cpuflags="-march=$cpu"
4921             disable i686
4922             disable mmx
4923         ;;
4924         # targets that do NOT support nopl and conditional mov (cmov)
4925         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4926             cpuflags="-march=$cpu"
4927             disable i686
4928         ;;
4929         # targets that do support nopl and conditional mov (cmov)
4930         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4931         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4932         |amdfam10|barcelona|b[dt]ver*|znver*)
4933             cpuflags="-march=$cpu"
4934             enable i686
4935             enable fast_cmov
4936         ;;
4937         # targets that do support conditional mov but on which it's slow
4938         pentium4|pentium4m|prescott|nocona)
4939             cpuflags="-march=$cpu"
4940             enable i686
4941             disable fast_cmov
4942         ;;
4943     esac
4944
4945 fi
4946
4947 if [ "$cpu" != generic ]; then
4948     add_cflags  $cpuflags
4949     add_asflags $cpuflags
4950     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4951 fi
4952
4953 # compiler sanity check
4954 test_exec <<EOF
4955 int main(void){ return 0; }
4956 EOF
4957 if test "$?" != 0; then
4958     echo "$cc is unable to create an executable file."
4959     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4960         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4961         echo "Only do this if you know what cross compiling means."
4962     fi
4963     die "C compiler test failed."
4964 fi
4965
4966 add_cppflags -D_ISOC99_SOURCE
4967 add_cxxflags -D__STDC_CONSTANT_MACROS
4968 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
4969
4970 # some compilers silently accept -std=c11, so we also need to check that the
4971 # version macro is defined properly
4972 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
4973     add_cflags -std=c11 ||
4974     check_cflags -std=c99
4975
4976 check_cppflags -D_FILE_OFFSET_BITS=64
4977 check_cppflags -D_LARGEFILE_SOURCE
4978
4979 add_host_cppflags -D_ISOC99_SOURCE
4980 check_host_cflags -std=c99
4981 check_host_cflags -Wall
4982 check_host_cflags $host_cflags_speed
4983
4984 check_64bit(){
4985     arch32=$1
4986     arch64=$2
4987     expr=${3:-'sizeof(void *) > 4'}
4988     test_code cc "" "int test[2*($expr) - 1]" &&
4989         subarch=$arch64 || subarch=$arch32
4990     enable $subarch
4991 }
4992
4993 case "$arch" in
4994     aarch64|alpha|ia64)
4995         enabled shared && enable_weak pic
4996     ;;
4997     mips)
4998         check_64bit mips mips64 '_MIPS_SIM > 1'
4999         enabled shared && enable_weak pic
5000     ;;
5001     parisc)
5002         check_64bit parisc parisc64
5003         enabled shared && enable_weak pic
5004     ;;
5005     ppc)
5006         check_64bit ppc ppc64
5007         enabled shared && enable_weak pic
5008     ;;
5009     s390)
5010         check_64bit s390 s390x
5011         enabled shared && enable_weak pic
5012     ;;
5013     sparc)
5014         check_64bit sparc sparc64
5015         enabled shared && enable_weak pic
5016     ;;
5017     x86)
5018         check_64bit x86_32 x86_64
5019         # Treat x32 as x64 for now. Note it also needs pic if shared
5020         test "$subarch" = "x86_32" && test_cpp_condition stddef.h 'defined(__x86_64__)' &&
5021             subarch=x86_64 && enable x86_64 && disable x86_32
5022         if enabled x86_64; then
5023             enabled shared && enable_weak pic
5024             objformat=elf64
5025         fi
5026     ;;
5027 esac
5028
5029 # OS specific
5030 case $target_os in
5031     aix)
5032         SHFLAGS=-shared
5033         add_cppflags '-I\$(SRC_PATH)/compat/aix'
5034         enabled shared && add_ldflags -Wl,-brtl
5035         arflags='-Xany -r -c'
5036         striptype=""
5037         ;;
5038     android)
5039         disable symver
5040         enable section_data_rel_ro
5041         SLIB_INSTALL_NAME='$(SLIBNAME)'
5042         SLIB_INSTALL_LINKS=
5043         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
5044         ;;
5045     haiku)
5046         prefix_default="/boot/common"
5047         network_extralibs="-lnetwork"
5048         host_extralibs=
5049         ;;
5050     sunos)
5051         SHFLAGS='-shared -Wl,-h,$$(@F)'
5052         enabled x86 && append SHFLAGS -mimpure-text
5053         network_extralibs="-lsocket -lnsl"
5054         add_cppflags -D__EXTENSIONS__
5055         # When using suncc to build, the Solaris linker will mark
5056         # an executable with each instruction set encountered by
5057         # the Solaris assembler.  As our libraries contain their own
5058         # guards for processor-specific code, instead suppress
5059         # generation of the HWCAPS ELF section on Solaris x86 only.
5060         enabled_all suncc x86 &&
5061             echo "hwcap_1 = OVERRIDE;" > mapfile &&
5062             add_ldflags -Wl,-M,mapfile
5063         nm_default='nm -P -g'
5064         version_script='-M'
5065         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
5066         ;;
5067     netbsd)
5068         disable symver
5069         oss_indev_extralibs="-lossaudio"
5070         oss_outdev_extralibs="-lossaudio"
5071         enabled gcc || check_ldflags -Wl,-zmuldefs
5072         ;;
5073     openbsd|bitrig)
5074         disable symver
5075         striptype=""
5076         SHFLAGS='-shared'
5077         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
5078         SLIB_INSTALL_LINKS=
5079         oss_indev_extralibs="-lossaudio"
5080         oss_outdev_extralibs="-lossaudio"
5081         ;;
5082     dragonfly)
5083         disable symver
5084         ;;
5085     freebsd)
5086         ;;
5087     bsd/os)
5088         add_extralibs -lpoll -lgnugetopt
5089         strip="strip -d"
5090         ;;
5091     darwin)
5092         enabled ppc && add_asflags -force_cpusubtype_ALL
5093         install_name_dir_default='$(SHLIBDIR)'
5094         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
5095         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
5096         strip="${strip} -x"
5097         add_ldflags -Wl,-dynamic,-search_paths_first
5098         check_cflags -Werror=partial-availability
5099         SLIBSUF=".dylib"
5100         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
5101         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
5102         enabled x86_64 && objformat="macho64" || objformat="macho32"
5103         enabled_any pic shared x86_64 ||
5104             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
5105         check_header dispatch/dispatch.h &&
5106             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
5107         if test -n "$sysroot"; then
5108             is_in -isysroot $cc $CPPFLAGS $CFLAGS || check_cppflags -isysroot $sysroot
5109             is_in -isysroot $ld $LDFLAGS          || check_ldflags  -isysroot $sysroot
5110         fi
5111         version_script='-exported_symbols_list'
5112         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
5113         ;;
5114     msys*)
5115         die "Native MSYS builds are discouraged, please use the MINGW environment."
5116         ;;
5117     mingw32*|mingw64*)
5118         target_os=mingw32
5119         LIBTARGET=i386
5120         if enabled x86_64; then
5121             LIBTARGET="i386:x86-64"
5122         elif enabled arm; then
5123             LIBTARGET="arm"
5124         elif enabled aarch64; then
5125             LIBTARGET="arm64"
5126         fi
5127         if enabled shared; then
5128             # Cannot build both shared and static libs when using dllimport.
5129             disable static
5130         fi
5131         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5132         enabled x86_32 && check_ldflags -Wl,--large-address-aware
5133         shlibdir_default="$bindir_default"
5134         SLIBPREF=""
5135         SLIBSUF=".dll"
5136         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5137         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5138         if test_cmd lib.exe -list; then
5139             SLIB_EXTRA_CMD=-'lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5140             if enabled x86_64; then
5141                 LIBTARGET=x64
5142             fi
5143         else
5144             SLIB_EXTRA_CMD=-'$(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
5145         fi
5146         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5147         SLIB_INSTALL_LINKS=
5148         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5149         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5150         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" AR="$(AR_CMD)" NM="$(NM_CMD)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5151         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--disable-auto-image-base $$(@:$(SLIBSUF)=.def)'
5152         enabled x86_64 && objformat="win64" || objformat="win32"
5153         dlltool="${cross_prefix}dlltool"
5154         ranlib=:
5155         enable dos_paths
5156         check_ldflags -Wl,--nxcompat,--dynamicbase
5157         # Lets work around some stupidity in binutils.
5158         # ld will strip relocations from executables even though we need them
5159         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
5160         # however ld then forgets what the entry point should be (oops) so we
5161         # have to manually (re)set it.
5162         if enabled x86_32; then
5163             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
5164         elif enabled x86_64; then
5165             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
5166             check_ldflags -Wl,--high-entropy-va # binutils 2.25
5167             # Set image base >4GB for extra entropy with HEASLR
5168             add_ldexeflags -Wl,--image-base,0x140000000
5169             append SHFLAGS -Wl,--image-base,0x180000000
5170         fi
5171         ;;
5172     win32|win64)
5173         disable symver
5174         if enabled shared; then
5175             # Link to the import library instead of the normal static library
5176             # for shared libs.
5177             LD_LIB='%.lib'
5178             # Cannot build both shared and static libs with MSVC or icl.
5179             disable static
5180         fi
5181         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
5182         shlibdir_default="$bindir_default"
5183         SLIBPREF=""
5184         SLIBSUF=".dll"
5185         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5186         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5187         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5188         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5189         SLIB_INSTALL_LINKS=
5190         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5191         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5192         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5193         enabled x86_64 && objformat="win64" || objformat="win32"
5194         ranlib=:
5195         enable dos_paths
5196         ;;
5197     cygwin*)
5198         target_os=cygwin
5199         shlibdir_default="$bindir_default"
5200         SLIBPREF="cyg"
5201         SLIBSUF=".dll"
5202         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5203         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5204         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5205         SLIB_INSTALL_LINKS=
5206         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
5207         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
5208         enabled x86_64 && objformat="win64" || objformat="win32"
5209         enable dos_paths
5210         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5211         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5212         ;;
5213     *-dos|freedos|opendos)
5214         network_extralibs="-lsocket"
5215         objformat="coff"
5216         enable dos_paths
5217         add_cppflags -U__STRICT_ANSI__
5218         ;;
5219     linux)
5220         enable section_data_rel_ro
5221         enabled_any arm aarch64 && enable_weak linux_perf
5222         ;;
5223     irix*)
5224         target_os=irix
5225         ranlib="echo ignoring ranlib"
5226         ;;
5227     os/2*)
5228         strip="lxlite -CS"
5229         striptype=""
5230         objformat="aout"
5231         add_cppflags -D_GNU_SOURCE
5232         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
5233         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
5234         LIBSUF="_s.a"
5235         SLIBPREF=""
5236         SLIBSUF=".dll"
5237         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5238         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
5239         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
5240             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
5241             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
5242             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
5243             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
5244         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
5245             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
5246         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5247         SLIB_INSTALL_LINKS=
5248         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
5249         enable dos_paths
5250         enable_weak os2threads
5251         ;;
5252     gnu/kfreebsd)
5253         add_cppflags -D_BSD_SOURCE
5254         ;;
5255     gnu)
5256         ;;
5257     qnx)
5258         add_cppflags -D_QNX_SOURCE
5259         network_extralibs="-lsocket"
5260         ;;
5261     symbian)
5262         SLIBSUF=".dll"
5263         enable dos_paths
5264         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
5265         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
5266         add_ldflags -Wl,--target1-abs,--no-undefined \
5267                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
5268                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
5269         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
5270                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
5271                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
5272         ;;
5273     minix)
5274         ;;
5275     none)
5276         ;;
5277     *)
5278         die "Unknown OS '$target_os'."
5279         ;;
5280 esac
5281
5282 # test if creating links works
5283 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5284 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5285 mkdir "$link_dest"
5286 $ln_s "$link_dest" "$link_name"
5287 touch "$link_dest/test_file"
5288 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5289     # create link to source path
5290     [ -e src ] && rm src
5291     $ln_s "$source_path" src
5292     source_link=src
5293 else
5294     # creating directory links doesn't work
5295     # fall back to using the full source path
5296     source_link="$source_path"
5297 fi
5298 # cleanup
5299 rm -r "$link_dest"
5300 rm -r "$link_name"
5301
5302 # determine libc flavour
5303
5304 probe_libc(){
5305     pfx=$1
5306     pfx_no_=${pfx%_}
5307     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5308     if test_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5309         eval ${pfx}libc_type=uclibc
5310         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5311     elif test_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5312         eval ${pfx}libc_type=glibc
5313         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5314     # MinGW headers can be installed on Cygwin, so check for newlib first.
5315     elif test_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5316         eval ${pfx}libc_type=newlib
5317         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
5318     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5319     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5320         eval ${pfx}libc_type=mingw64
5321         if test_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5322             add_compat msvcrt/snprintf.o
5323             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5324         fi
5325         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5326         eval test \$${pfx_no_}cc_type = "gcc" &&
5327             add_${pfx}cppflags -D__printf__=__gnu_printf__
5328         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5329             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5330     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5331          test_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5332         eval ${pfx}libc_type=mingw32
5333         test_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5334             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5335             die "ERROR: MinGW32 runtime version must be >= 3.15."
5336         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5337         test_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
5338             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5339         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5340             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5341         eval test \$${pfx_no_}cc_type = "gcc" &&
5342             add_${pfx}cppflags -D__printf__=__gnu_printf__
5343     elif test_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5344         eval ${pfx}libc_type=msvcrt
5345         if test_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5346             if [ "$pfx" = host_ ]; then
5347                 add_host_cppflags -Dsnprintf=_snprintf
5348             else
5349                 add_compat strtod.o strtod=avpriv_strtod
5350                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5351                                              _snprintf=avpriv_snprintf  \
5352                                              vsnprintf=avpriv_vsnprintf
5353             fi
5354         fi
5355         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5356         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5357         # 0x601 by default unless something else is set by the user.
5358         # This can easily lead to us detecting functions only present
5359         # in such new versions and producing binaries requiring windows 7.0.
5360         # Therefore explicitly set the default to Vista unless the user has
5361         # set something else on the command line.
5362         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5363         # family. For these cases, configure is free to use any functions
5364         # found in the SDK headers by default. (Alternatively, we could force
5365         # _WIN32_WINNT to 0x0602 in that case.)
5366         test_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5367             { test_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0600; }
5368 #ifdef WINAPI_FAMILY
5369 #include <winapifamily.h>
5370 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5371 #error not desktop
5372 #endif
5373 #endif
5374 EOF
5375         if [ "$pfx" = "" ]; then
5376             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5377             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5378         fi
5379     elif test_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5380         eval ${pfx}libc_type=klibc
5381     elif test_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5382         eval ${pfx}libc_type=bionic
5383     elif test_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5384         eval ${pfx}libc_type=solaris
5385         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5386     fi
5387     test_${pfx}cc <<EOF
5388 #include <time.h>
5389 void *v = localtime_r;
5390 EOF
5391 test "$?" != 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
5392 #include <time.h>
5393 void *v = localtime_r;
5394 EOF
5395
5396     eval test -n "\${${pfx}libc_type}" && enable ${pfx}libc_${libc_type}
5397 }
5398
5399 probe_libc
5400 probe_libc host_
5401
5402 # hacks for compiler/libc/os combinations
5403
5404 case $libc_type in
5405     bionic)
5406         add_compat strtod.o strtod=avpriv_strtod
5407         ;;
5408 esac
5409
5410 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5411     add_cppflags '-I\$(SRC_PATH)/compat/float'
5412
5413 test_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5414
5415 set_default libdir
5416 : ${shlibdir_default:="$libdir"}
5417 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5418
5419 set_default $PATHS_LIST
5420 set_default nm
5421
5422 disabled optimizations || enabled ossfuzz || check_cflags -fomit-frame-pointer
5423
5424 enable_weak_pic() {
5425     disabled pic && return
5426     enable pic
5427     add_cppflags -DPIC
5428     case "$target_os" in
5429     mingw*|cygwin*|win*)
5430         ;;
5431     *)
5432         add_cflags -fPIC
5433         add_asflags -fPIC
5434         ;;
5435     esac
5436 }
5437
5438 enabled pic && enable_weak_pic
5439
5440 test_cc <<EOF || die "Symbol mangling check failed."
5441 int ff_extern;
5442 EOF
5443 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5444 extern_prefix=${sym%%ff_extern*}
5445
5446 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
5447
5448 for restrict_keyword in restrict __restrict__ __restrict ""; do
5449     test_code cc "" "char * $restrict_keyword p" && break
5450 done
5451
5452 check_cc pragma_deprecated "" '_Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"")'
5453
5454 # The global variable ensures the bits appear unchanged in the object file.
5455 test_cc <<EOF || die "endian test failed"
5456 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5457 EOF
5458 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5459
5460 check_cc const_nan math.h "struct { double d; } static const bar[] = { { NAN } }"
5461
5462 if ! enabled ppc64 || enabled bigendian; then
5463     disable vsx
5464 fi
5465
5466 check_gas() {
5467     log "check_gas using '$as' as AS"
5468     # :vararg is used on aarch64, arm and ppc altivec
5469     check_as vararg "
5470 .macro m n, y:vararg=0
5471 \n: .int \y
5472 .endm
5473 m x" || return 1
5474     # .altmacro is only used in arm asm
5475     ! enabled arm || check_as gnu_as ".altmacro"
5476 }
5477
5478 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5479     nogas=:
5480     enabled_any arm aarch64 && nogas=die
5481     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5482     as_noop=-v
5483
5484     case $as_type in
5485         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5486         gcc)  gaspp_as_type=gas ;;
5487         *)    gaspp_as_type=$as_type ;;
5488     esac
5489
5490     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5491
5492     test "${as#*gas-preprocessor.pl}" != "$as" ||
5493     test_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5494         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5495
5496     if ! check_gas ; then
5497         as=${gas:=$as}
5498         check_gas || \
5499             $nogas "GNU assembler not found, install/update gas-preprocessor"
5500     fi
5501
5502     check_as as_func ".func test
5503                       .endfunc"
5504 fi
5505
5506 check_inline_asm inline_asm_labels '"1:\n"'
5507
5508 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5509
5510 if enabled aarch64; then
5511     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5512     # internal assembler in clang 3.3 does not support this instruction
5513     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5514     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5515
5516     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5517
5518 elif enabled alpha; then
5519
5520     check_cflags -mieee
5521
5522 elif enabled arm; then
5523
5524     enabled msvc && check_cpp_condition thumb stddef.h "defined _M_ARMT"
5525     test_cpp_condition stddef.h "defined __thumb__" && test_cc <<EOF && enable_weak thumb
5526 float func(float a, float b){ return a+b; }
5527 EOF
5528     enabled thumb && check_cflags -mthumb || check_cflags -marm
5529
5530     if check_cpp_condition vfp_args stddef.h "defined __ARM_PCS_VFP"; then
5531         :
5532     elif check_cpp_condition vfp_args stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5533         :
5534     elif ! test_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5535         case "${cross_prefix:-$cc}" in
5536             *hardfloat*) enable vfp_args; fpabi=vfp ;;
5537             *) check_ld "cc" vfp_args <<EOF && fpabi=vfp || fpabi=soft ;;
5538 __asm__ (".eabi_attribute 28, 1");
5539 int main(void) { return 0; }
5540 EOF
5541         esac
5542         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5543     fi
5544
5545     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5546     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5547     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5548     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5549     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5550     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5551     enabled setend  && check_insn setend  'setend be'
5552
5553     [ $target_os = linux ] || [ $target_os = android ] ||
5554         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5555             $ARCH_EXT_LIST_ARM
5556
5557     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5558
5559     check_as as_arch_directive ".arch armv7-a"
5560     check_as as_dn_directive   "ra .dn d0.i16"
5561     check_as as_fpu_directive  ".fpu neon"
5562
5563     # llvm's integrated assembler supports .object_arch from llvm 3.5
5564     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
5565         check_as as_object_arch ".object_arch armv4"
5566
5567     # MS armasm fails to assemble our PIC constructs
5568     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5569
5570 elif enabled mips; then
5571
5572     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5573     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5574     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5575
5576     # Enable minimum ISA based on selected options
5577     if enabled mips64; then
5578         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5579         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5580         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5581     else
5582         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5583         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5584         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5585         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5586     fi
5587
5588     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5589     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5590     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_header msa.h || disable msa
5591     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5592     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5593
5594     if enabled bigendian && enabled msa; then
5595         disable msa
5596     fi
5597
5598 elif enabled parisc; then
5599
5600     if enabled gcc; then
5601         case $($cc -dumpversion) in
5602             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5603         esac
5604     fi
5605
5606 elif enabled ppc; then
5607
5608     enable local_aligned
5609
5610     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5611     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5612     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5613     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5614
5615     if enabled altivec; then
5616         check_cflags -maltivec -mabi=altivec
5617
5618         # check if our compiler supports Motorola AltiVec C API
5619         check_cc altivec altivec.h "vector signed int v1 = (vector signed int) { 0 };
5620                                     vector signed int v2 = (vector signed int) { 1 };
5621                                     v1 = vec_add(v1, v2);"
5622
5623         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5624     fi
5625
5626     if enabled vsx; then
5627         check_cflags -mvsx &&
5628         check_cc vsx altivec.h "int v[4] = { 0 };
5629                                 vector signed int v1 = vec_vsx_ld(0, v);"
5630     fi
5631
5632     if enabled power8; then
5633         check_cpp_condition power8 "altivec.h" "defined(_ARCH_PWR8)"
5634     fi
5635
5636 elif enabled x86; then
5637
5638     check_builtin rdtsc    intrin.h   "__rdtsc()"
5639     check_builtin mm_empty mmintrin.h "_mm_empty()"
5640
5641     enable local_aligned
5642
5643     # check whether EBP is available on x86
5644     # As 'i' is stored on the stack, this program will crash
5645     # if the base pointer is used to access it because the
5646     # base pointer is cleared in the inline assembly code.
5647     check_exec_crash <<EOF && enable ebp_available
5648 volatile int i=0;
5649 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5650 return i;
5651 EOF
5652
5653     # check whether EBX is available on x86
5654     check_inline_asm ebx_available '""::"b"(0)' &&
5655         check_inline_asm ebx_available '"":::"%ebx"'
5656
5657     # check whether xmm clobbers are supported
5658     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5659
5660     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5661         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5662
5663     # check whether binutils is new enough to compile SSSE3/MMXEXT
5664     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5665     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5666
5667     probe_x86asm(){
5668         x86asmexe_probe=$1
5669         if test_cmd $x86asmexe_probe -v; then
5670             x86asmexe=$x86asmexe_probe
5671             x86asm_type=nasm
5672             x86asm_debug="-g -F dwarf"
5673             X86ASMDEP=
5674             X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
5675         elif test_cmd $x86asmexe_probe --version; then
5676             x86asmexe=$x86asmexe_probe
5677             x86asm_type=yasm
5678             x86asm_debug="-g dwarf2"
5679             X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
5680             X86ASM_DEPFLAGS=
5681         fi
5682         check_x86asm x86asm "movbe ecx, [5]"
5683     }
5684
5685     if ! disabled_any asm mmx x86asm; then
5686         disable x86asm
5687         for program in $x86asmexe nasm yasm; do
5688             probe_x86asm $program && break
5689         done
5690         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
5691         X86ASMFLAGS="-f $objformat"
5692         enabled pic               && append X86ASMFLAGS "-DPIC"
5693         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
5694         case "$objformat" in
5695             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
5696         esac
5697
5698         check_x86asm avx512_external "vmovdqa32 [eax]{k1}{z}, zmm0"
5699         check_x86asm avx2_external   "vextracti128 xmm0, ymm0, 0"
5700         check_x86asm xop_external    "vpmacsdd xmm0, xmm1, xmm2, xmm3"
5701         check_x86asm fma4_external   "vfmaddps ymm0, ymm1, ymm2, ymm3"
5702         check_x86asm cpunop          "CPU amdnop"
5703     fi
5704
5705     case "$cpu" in
5706         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5707             disable fast_clz
5708         ;;
5709     esac
5710
5711 fi
5712
5713 check_cc intrinsics_neon arm_neon.h "int16x8_t test = vdupq_n_s16(0)"
5714
5715 check_ldflags -Wl,--as-needed
5716 check_ldflags -Wl,-z,noexecstack
5717
5718 if ! disabled network; then
5719     check_func getaddrinfo $network_extralibs
5720     check_func inet_aton $network_extralibs
5721
5722     check_type netdb.h "struct addrinfo"
5723     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5724     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5725     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5726     check_type poll.h "struct pollfd"
5727     check_type netinet/sctp.h "struct sctp_event_subscribe"
5728     check_struct "sys/socket.h" "struct msghdr" msg_flags
5729     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5730     check_type netinet/in.h "struct sockaddr_in6"
5731     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5732     check_type "sys/types.h sys/socket.h" socklen_t
5733
5734     # Prefer arpa/inet.h over winsock2
5735     if check_header arpa/inet.h ; then
5736         check_func closesocket
5737     elif check_header winsock2.h ; then
5738         check_func_headers winsock2.h closesocket -lws2 &&
5739             network_extralibs="-lws2" ||
5740         { check_func_headers winsock2.h closesocket -lws2_32 &&
5741             network_extralibs="-lws2_32"; } || disable winsock2_h network
5742         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5743
5744         check_type ws2tcpip.h socklen_t
5745         check_type ws2tcpip.h "struct addrinfo"
5746         check_type ws2tcpip.h "struct group_source_req"
5747         check_type ws2tcpip.h "struct ip_mreq_source"
5748         check_type ws2tcpip.h "struct ipv6_mreq"
5749         check_type winsock2.h "struct pollfd"
5750         check_struct winsock2.h "struct sockaddr" sa_len
5751         check_type ws2tcpip.h "struct sockaddr_in6"
5752         check_type ws2tcpip.h "struct sockaddr_storage"
5753     else
5754         disable network
5755     fi
5756 fi
5757
5758 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5759 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5760 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5761 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5762 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5763 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5764 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5765
5766 case "$custom_allocator" in
5767     jemalloc)
5768         # jemalloc by default does not use a prefix
5769         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5770     ;;
5771     tcmalloc)
5772         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
5773         malloc_prefix=tc_
5774     ;;
5775 esac
5776
5777 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5778 check_func  ${malloc_prefix}memalign            && enable memalign
5779 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5780
5781 check_func  access
5782 check_func_headers stdlib.h arc4random
5783 check_lib   clock_gettime time.h clock_gettime || check_lib clock_gettime time.h clock_gettime -lrt
5784 check_func  fcntl
5785 check_func  fork
5786 check_func  gethrtime
5787 check_func  getopt
5788 check_func  getrusage
5789 check_func  gettimeofday
5790 check_func  isatty
5791 check_func  mkstemp
5792 check_func  mmap
5793 check_func  mprotect
5794 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5795 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
5796 check_func  sched_getaffinity
5797 check_func  setrlimit
5798 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5799 check_func  strerror_r
5800 check_func  sysconf
5801 check_func  sysctl
5802 check_func  usleep
5803
5804 check_func_headers conio.h kbhit
5805 check_func_headers io.h setmode
5806 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5807 check_func_headers mach/mach_time.h mach_absolute_time
5808 check_func_headers stdlib.h getenv
5809 check_func_headers sys/stat.h lstat
5810
5811 check_func_headers windows.h GetProcessAffinityMask
5812 check_func_headers windows.h GetProcessTimes
5813 check_func_headers windows.h GetSystemTimeAsFileTime
5814 check_func_headers windows.h LoadLibrary
5815 check_func_headers windows.h MapViewOfFile
5816 check_func_headers windows.h PeekNamedPipe
5817 check_func_headers windows.h SetConsoleTextAttribute
5818 check_func_headers windows.h SetConsoleCtrlHandler
5819 check_func_headers windows.h Sleep
5820 check_func_headers windows.h VirtualAlloc
5821 check_func_headers glob.h glob
5822 enabled xlib &&
5823     check_lib xlib "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5824
5825 check_header direct.h
5826 check_header dirent.h
5827 check_header dxgidebug.h
5828 check_header dxva.h
5829 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5830 check_header io.h
5831 check_header linux/perf_event.h
5832 check_header libcrystalhd/libcrystalhd_if.h
5833 check_header malloc.h
5834 check_header net/udplite.h
5835 check_header poll.h
5836 check_header sys/param.h
5837 check_header sys/resource.h
5838 check_header sys/select.h
5839 check_header sys/time.h
5840 check_header sys/un.h
5841 check_header termios.h
5842 check_header unistd.h
5843 check_header valgrind/valgrind.h
5844 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5845 check_header windows.h
5846 check_header X11/extensions/XvMClib.h
5847 check_header asm/types.h
5848
5849 # it seems there are versions of clang in some distros that try to use the
5850 # gcc headers, which explodes for stdatomic
5851 # so we also check that atomics actually work here
5852 check_builtin stdatomic stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0); foo += bar"
5853
5854 check_lib advapi32 "windows.h"            RegCloseKey          -ladvapi32
5855 check_lib bcrypt   "windows.h bcrypt.h"   BCryptGenRandom      -lbcrypt &&
5856     check_cpp_condition bcrypt bcrypt.h "defined BCRYPT_RNG_ALGORITHM"
5857 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
5858 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
5859 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
5860
5861 check_lib android android/native_window.h ANativeWindow_acquire -landroid
5862 check_lib mediandk "stdint.h media/NdkImage.h" AImage_delete -lmediandk
5863 check_lib camera2ndk "stdbool.h stdint.h camera/NdkCameraManager.h" ACameraManager_create -lcamera2ndk
5864
5865 enabled appkit       && check_apple_framework AppKit
5866 enabled audiotoolbox && check_apple_framework AudioToolbox
5867 enabled avfoundation && check_apple_framework AVFoundation
5868 enabled coreimage    && check_apple_framework CoreImage
5869 enabled videotoolbox && check_apple_framework VideoToolbox
5870
5871 check_apple_framework CoreFoundation
5872 check_apple_framework CoreMedia
5873 check_apple_framework CoreVideo
5874
5875 enabled avfoundation && {
5876     disable coregraphics applicationservices
5877     check_lib coregraphics        CoreGraphics/CoreGraphics.h               CGGetActiveDisplayList "-framework CoreGraphics" ||
5878     check_lib applicationservices ApplicationServices/ApplicationServices.h CGGetActiveDisplayList "-framework ApplicationServices"; }
5879
5880 enabled videotoolbox && {
5881     check_lib coreservices CoreServices/CoreServices.h UTGetOSTypeFromString "-framework CoreServices"
5882     check_func_headers CoreMedia/CMFormatDescription.h kCMVideoCodecType_HEVC "-framework CoreMedia"
5883 }
5884
5885 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5886
5887 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5888 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5889 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5890 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5891 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5892
5893 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
5894 check_type "va/va.h va/va_dec_vp8.h" "VAPictureParameterBufferVP8"
5895 check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
5896 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
5897 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
5898 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
5899 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
5900 check_type "va/va.h va/va_enc_mpeg2.h" "VAEncPictureParameterBufferMPEG2"
5901 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
5902 check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
5903
5904 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5905
5906 if ! disabled ffnvcodec; then
5907     check_pkg_config ffnvcodec "ffnvcodec >= 8.1.24.2" \
5908           "ffnvcodec/nvEncodeAPI.h ffnvcodec/dynlink_cuda.h ffnvcodec/dynlink_cuviddec.h ffnvcodec/dynlink_nvcuvid.h" "" || \
5909         { test_pkg_config ffnvcodec_tmp "ffnvcodec < 8.1" "" "" && check_pkg_config ffnvcodec "ffnvcodec >= 8.0.14.2" \
5910           "ffnvcodec/nvEncodeAPI.h ffnvcodec/dynlink_cuda.h ffnvcodec/dynlink_cuviddec.h ffnvcodec/dynlink_nvcuvid.h" ""; }
5911 fi
5912
5913 check_cpp_condition winrt windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)"
5914
5915 if ! disabled w32threads && ! enabled pthreads; then
5916     check_func_headers "windows.h process.h" _beginthreadex &&
5917         check_type "windows.h" CONDITION_VARIABLE &&
5918         check_type "windows.h" INIT_ONCE &&
5919         enable w32threads || disable w32threads
5920     if ! enabled w32threads && enabled winrt; then
5921         check_func_headers "windows.h" CreateThread &&
5922             enable w32threads || disable w32threads
5923     fi
5924 fi
5925
5926 # check for some common methods of building with pthread support
5927 # do this before the optional library checks as some of them require pthreads
5928 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5929     if check_lib pthreads pthread.h pthread_join   -pthread &&
5930        check_lib pthreads pthread.h pthread_create -pthread; then
5931         add_cflags -pthread
5932     elif check_lib pthreads pthread.h pthread_join   -pthreads &&
5933          check_lib pthreads pthread.h pthread_create -pthreads; then
5934         add_cflags -pthreads
5935     elif check_lib pthreads pthread.h pthread_join   -ldl -pthread &&
5936          check_lib pthreads pthread.h pthread_create -ldl -pthread; then
5937         add_cflags -ldl -pthread
5938     elif check_lib pthreads pthread.h pthread_join   -lpthreadGC2 &&
5939          check_lib pthreads pthread.h pthread_create -lpthreadGC2; then
5940         :
5941     elif check_lib pthreads pthread.h pthread_join   -lpthread &&
5942          check_lib pthreads pthread.h pthread_create -lpthread; then
5943         :
5944     elif check_func pthread_join && check_func pthread_create; then
5945         enable pthreads
5946     fi
5947     check_cc pthreads "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER"
5948
5949     if enabled pthreads; then
5950         check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
5951         check_func pthread_cancel $pthreads_extralibs
5952     fi
5953 fi
5954
5955 enabled  zlib && { check_pkg_config zlib zlib "zlib.h" zlibVersion ||
5956                    check_lib zlib   zlib.h      zlibVersion    -lz; }
5957 enabled bzlib && check_lib bzlib bzlib.h BZ2_bzlibVersion    -lbz2
5958 enabled  lzma && check_lib lzma   lzma.h lzma_version_number -llzma
5959
5960 # On some systems dynamic loading requires no extra linker flags
5961 check_lib libdl dlfcn.h "dlopen dlsym" || check_lib libdl dlfcn.h "dlopen dlsym" -ldl
5962
5963 check_lib libm math.h sin -lm
5964
5965 atan2f_args=2
5966 copysign_args=2
5967 hypot_args=2
5968 ldexpf_args=2
5969 powf_args=2
5970
5971 for func in $MATH_FUNCS; do
5972     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
5973 done
5974
5975 for func in $COMPLEX_FUNCS; do
5976     eval check_complexfunc $func \${${func}_args:-1}
5977 done
5978
5979 # these are off by default, so fail if requested and not available
5980 enabled cuda_sdk          && require cuda_sdk cuda.h cuCtxCreate -lcuda
5981 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
5982 enabled decklink          && { require_header DeckLinkAPI.h &&
5983                                { test_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a060100" || die "ERROR: Decklink API version must be >= 10.6.1."; } }
5984 enabled libndi_newtek     && require_header Processing.NDI.Lib.h
5985 enabled frei0r            && require_header frei0r.h
5986 enabled gmp               && require gmp gmp.h mpz_export -lgmp
5987 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init
5988 enabled jni               && { [ $target_os = "android" ] && check_header jni.h && enabled pthreads || die "ERROR: jni not found"; }
5989 enabled ladspa            && require_header ladspa.h
5990 enabled libaom            && require_pkg_config libaom "aom >= 0.1.0" aom/aom_codec.h aom_codec_version
5991 enabled lv2               && require_pkg_config lv2 lilv-0 "lilv/lilv.h" lilv_world_new
5992 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5993 enabled libass            && require_pkg_config libass libass ass/ass.h ass_library_init
5994 enabled libbluray         && require_pkg_config libbluray libbluray libbluray/bluray.h bd_open
5995 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
5996 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5997                              { check_lib libcelt celt/celt.h celt_decoder_create_custom -lcelt0 ||
5998                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5999 enabled libcaca           && require_pkg_config libcaca caca caca.h caca_create_canvas
6000 enabled libcodec2         && require libcodec2 codec2/codec2.h codec2_create -lcodec2
6001 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
6002 enabled libdrm            && require_pkg_config libdrm libdrm xf86drm.h drmGetVersion
6003 enabled libfdk_aac        && { check_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
6004                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
6005                                  warn "using libfdk without pkg-config"; } }
6006 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"
6007 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_extralibs
6008 enabled fontconfig        && enable libfontconfig
6009 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
6010 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
6011 enabled libfribidi        && require_pkg_config libfribidi fribidi fribidi.h fribidi_version_info
6012 enabled libgme            && { check_pkg_config libgme libgme gme/gme.h gme_new_emu ||
6013                                require libgme gme/gme.h gme_new_emu -lgme -lstdc++; }
6014 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
6015                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
6016                                done || die "ERROR: libgsm not found"; }
6017 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc $pthreads_extralibs
6018 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
6019 # While it may appear that require is being used as a pkg-config
6020 # fallback for libmfx, it is actually being used to detect a different
6021 # installation route altogether.  If libmfx is installed via the Intel
6022 # Media SDK or Intel Media Server Studio, these don't come with
6023 # pkg-config support.  Instead, users should make sure that the build
6024 # can find the libraries and headers through other means.
6025 enabled libmfx            && { check_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit ||
6026                                { require libmfx "mfx/mfxvideo.h" MFXInit "-llibmfx $advapi32_extralibs" && warn "using libmfx without pkg-config"; } }
6027 enabled libmodplug        && require_pkg_config libmodplug libmodplug libmodplug/modplug.h ModPlug_Load
6028 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame $libm_extralibs
6029 enabled libmysofa         && { check_pkg_config libmysofa libmysofa mysofa.h mysofa_load ||
6030                                require libmysofa mysofa.h mysofa_load -lmysofa $zlib_extralibs; }
6031 enabled libnpp            && { check_lib libnpp npp.h nppGetLibVersion -lnppig -lnppicc -lnppc ||
6032                                check_lib libnpp npp.h nppGetLibVersion -lnppi -lnppc ||
6033                                die "ERROR: libnpp not found"; }
6034 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
6035 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
6036 enabled libopencv         && { check_header opencv2/core/core_c.h &&
6037                                { check_pkg_config libopencv opencv opencv2/core/core_c.h cvCreateImageHeader ||
6038                                  require libopencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
6039                                require_pkg_config libopencv opencv opencv/cxcore.h cvCreateImageHeader; }
6040 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
6041 enabled libopenjpeg       && { check_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version ||
6042                                { require_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } }
6043 enabled libopenmpt        && require_pkg_config libopenmpt "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create -lstdc++ && append libopenmpt_extralibs "-lstdc++"
6044 enabled libopus           && {
6045     enabled libopus_decoder && {
6046         require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
6047     }
6048     enabled libopus_encoder && {
6049         require_pkg_config libopus opus opus_multistream.h opus_multistream_surround_encoder_create
6050     }
6051 }
6052 enabled libpulse          && require_pkg_config libpulse libpulse pulse/pulseaudio.h pa_context_new
6053 enabled librsvg           && require_pkg_config librsvg librsvg-2.0 librsvg-2.0/librsvg/rsvg.h rsvg_handle_render_cairo
6054 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
6055 enabled librubberband     && require_pkg_config librubberband "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new -lstdc++ && append librubberband_extralibs "-lstdc++"
6056 enabled libshine          && require_pkg_config libshine shine shine/layer3.h shine_encode_buffer
6057 enabled libsmbclient      && { check_pkg_config libsmbclient smbclient libsmbclient.h smbc_init ||
6058                                require libsmbclient libsmbclient.h smbc_init -lsmbclient; }
6059 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy -lstdc++
6060 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
6061 enabled libssh            && require_pkg_config libssh libssh libssh/sftp.h sftp_init
6062 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init
6063 enabled libsrt            && require_pkg_config libsrt "srt >= 1.2.0" srt/srt.h srt_socket
6064 enabled libtensorflow     && require libtensorflow tensorflow/c/c_api.h TF_Version -ltensorflow
6065 enabled libtesseract      && require_pkg_config libtesseract tesseract tesseract/capi.h TessBaseAPICreate
6066 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
6067 enabled libtls            && require_pkg_config libtls libtls tls.h tls_configure
6068 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
6069                              { check_lib libtwolame twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
6070                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
6071 enabled libv4l2           && require_pkg_config libv4l2 libv4l2 libv4l2.h v4l2_ioctl
6072 enabled libvidstab        && require_pkg_config libvidstab "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
6073 enabled libvmaf           && require_pkg_config libvmaf "libvmaf >= 0.6.2" libvmaf.h compute_vmaf
6074 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
6075 enabled libvorbis         && require_pkg_config libvorbis vorbis vorbis/codec.h vorbis_info_init &&
6076                              require_pkg_config libvorbisenc vorbisenc vorbis/vorbisenc.h vorbis_encode_init
6077
6078 enabled libvpx            && {
6079     enabled libvpx_vp8_decoder && {
6080         check_pkg_config libvpx_vp8_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
6081             check_lib libvpx_vp8_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_dec_init_ver VPX_IMG_FMT_HIGHBITDEPTH" -lvpx ||
6082                 die "ERROR: libvpx decoder version must be >=1.4.0";
6083     }
6084     enabled libvpx_vp8_encoder && {
6085         check_pkg_config libvpx_vp8_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
6086             check_lib libvpx_vp8_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VPX_IMG_FMT_HIGHBITDEPTH" -lvpx ||
6087                 die "ERROR: libvpx encoder version must be >=1.4.0";
6088     }
6089     enabled libvpx_vp9_decoder && {
6090         check_pkg_config libvpx_vp9_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
6091             check_lib libvpx_vp9_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx VPX_IMG_FMT_HIGHBITDEPTH" "-lvpx $libm_extralibs"
6092     }
6093     enabled libvpx_vp9_encoder && {
6094         check_pkg_config libvpx_vp9_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
6095             check_lib libvpx_vp9_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VPX_IMG_FMT_HIGHBITDEPTH" "-lvpx $libm_extralibs"
6096     }
6097     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
6098         die "libvpx enabled but no supported decoders found"
6099     fi
6100 }
6101
6102 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
6103 enabled libwebp           && {
6104     enabled libwebp_encoder      && require_pkg_config libwebp "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
6105     enabled libwebp_anim_encoder && check_pkg_config libwebp_anim_encoder "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit; }
6106 enabled libx264           && { check_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode ||
6107                                { require libx264 "stdint.h x264.h" x264_encoder_encode "-lx264 $pthreads_extralibs $libm_extralibs" &&
6108                                  warn "using libx264 without pkg-config"; } } &&
6109                              require_cpp_condition x264.h "X264_BUILD >= 118" &&
6110                              check_cpp_condition libx262 x264.h "X264_MPEG2"
6111 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
6112                              require_cpp_condition x265.h "X265_BUILD >= 68"
6113 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode "-lxavs $pthreads_extralibs $libm_extralibs"
6114 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
6115 enabled libzimg           && require_pkg_config libzimg "zimg >= 2.7.0" zimg.h zimg_get_api_version
6116 enabled libzmq            && require_pkg_config libzmq libzmq zmq.h zmq_ctx_new
6117 enabled libzvbi           && require_pkg_config libzvbi zvbi-0.2 libzvbi.h vbi_decoder_new &&
6118                              { test_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
6119                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
6120 enabled libxml2           && require_pkg_config libxml2 libxml-2.0 libxml2/libxml/xmlversion.h xmlCheckVersion
6121 enabled mbedtls           && { check_pkg_config mbedtls mbedtls mbedtls/x509_crt.h mbedtls_x509_crt_init ||
6122                                check_pkg_config mbedtls mbedtls mbedtls/ssl.h mbedtls_ssl_init ||
6123                                check_lib mbedtls mbedtls/ssl.h mbedtls_ssl_init -lmbedtls -lmbedx509 -lmbedcrypto ||
6124                                die "ERROR: mbedTLS not found"; }
6125 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
6126 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
6127                                { ! enabled cross_compile &&
6128                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
6129                                  add_ldflags -L/opt/vc/lib/ &&
6130                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
6131                                die "ERROR: mmal not found" &&
6132                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
6133 enabled openal            && { { for al_extralibs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
6134                                check_lib openal 'AL/al.h' alGetError "${al_extralibs}" && break; done } ||
6135                                die "ERROR: openal not found"; } &&
6136                              { test_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
6137                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
6138 enabled opencl            && { check_pkg_config opencl OpenCL CL/cl.h clEnqueueNDRangeKernel ||
6139                                check_lib opencl OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
6140                                check_lib opencl CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
6141                                die "ERROR: opencl not found"; } &&
6142                              { test_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
6143                                test_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
6144                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
6145 enabled opengl            && { check_lib opengl GL/glx.h glXGetProcAddress "-lGL" ||
6146                                check_lib opengl windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
6147                                check_lib opengl OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
6148                                check_lib opengl ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
6149                                die "ERROR: opengl not found."
6150                              }
6151 enabled omx               && require_header OMX_Core.h
6152 enabled omx_rpi           && { check_header OMX_Core.h ||
6153                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_header OMX_Core.h ; } ||
6154                                die "ERROR: OpenMAX IL headers not found"; } && enable omx
6155 enabled openssl           && { check_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
6156                                check_pkg_config openssl openssl openssl/ssl.h SSL_library_init ||
6157                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
6158                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
6159                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
6160                                die "ERROR: openssl not found"; }
6161 enabled rkmpp             && { require_pkg_config rkmpp rockchip_mpp  rockchip/rk_mpi.h mpp_create &&
6162                                require_pkg_config rockchip_mpp "rockchip_mpp >= 1.3.7" rockchip/rk_mpi.h mpp_create &&
6163                                { enabled libdrm ||
6164                                  die "ERROR: rkmpp requires --enable-libdrm"; }
6165                              }
6166 enabled vapoursynth       && require_pkg_config vapoursynth "vapoursynth-script >= 42" VSScript.h vsscript_init
6167
6168
6169 if enabled gcrypt; then
6170     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
6171     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
6172         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
6173         gcrypt_extralibs=$("${GCRYPT_CONFIG}" --libs)
6174         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_extralibs ||
6175             die "ERROR: gcrypt not found"
6176         add_cflags $gcrypt_cflags
6177     else
6178         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
6179     fi
6180 fi
6181
6182 if enabled sdl2; then
6183     SDL2_CONFIG="${cross_prefix}sdl2-config"
6184     test_pkg_config sdl2 "sdl2 >= 2.0.1 sdl2 < 2.1.0" SDL_events.h SDL_PollEvent
6185     if disabled sdl2 && "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
6186         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
6187         sdl2_extralibs=$("${SDL2_CONFIG}" --libs)
6188         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
6189         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
6190         check_func_headers SDL_events.h SDL_PollEvent $sdl2_extralibs $sdl2_cflags &&
6191             enable sdl2
6192     fi
6193     if test $target_os = "mingw32"; then
6194         sdl2_extralibs=$(filter_out '-mwindows' $sdl2_extralibs)
6195     fi
6196 fi
6197
6198 if enabled decklink; then
6199     case $target_os in
6200         mingw32*|mingw64*|win32|win64)
6201             decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
6202             decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
6203             ;;
6204     esac
6205 fi
6206
6207 enabled securetransport &&
6208     check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
6209     check_lib securetransport "Security/SecureTransport.h Security/Security.h" "SSLCreateContext" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" ||
6210         disable securetransport
6211
6212 enabled securetransport &&
6213     check_func SecItemImport "-Wl,-framework,CoreFoundation -Wl,-framework,Security"
6214
6215 enabled schannel &&
6216     check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
6217     test_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" &&
6218     schannel_extralibs="-lsecur32" ||
6219         disable schannel
6220
6221 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
6222 enabled makeinfo \
6223     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
6224     && enable makeinfo_html || disable makeinfo_html
6225 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
6226 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
6227 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
6228 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
6229
6230 # check V4L2 codecs available in the API
6231 check_header linux/fb.h
6232 check_header linux/videodev2.h
6233 test_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6234 check_cc v4l2_m2m linux/videodev2.h "int i = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_VIDEO_M2M | V4L2_BUF_FLAG_LAST;"
6235 check_cc vc1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VC1_ANNEX_G;"
6236 check_cc mpeg1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG1;"
6237 check_cc mpeg2_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG2;"
6238 check_cc mpeg4_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG4;"
6239 check_cc hevc_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_HEVC;"
6240 check_cc h263_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H263;"
6241 check_cc h264_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H264;"
6242 check_cc vp8_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP8;"
6243 check_cc vp9_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP9;"
6244
6245 check_header sys/videoio.h
6246 test_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6247
6248 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
6249 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
6250 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
6251 # w32api 3.12 had it defined wrong
6252 check_cpp_condition vfwcap_defines vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER"
6253
6254 check_type "dshow.h" IBaseFilter
6255
6256 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
6257 check_header "dev/bktr/ioctl_meteor.h dev/bktr/ioctl_bt848.h"                   ||
6258     check_header "machine/ioctl_meteor.h machine/ioctl_bt848.h"                 ||
6259     check_header "dev/video/meteor/ioctl_meteor.h dev/video/bktr/ioctl_bt848.h" ||
6260     check_header "dev/ic/bt8xx.h"
6261
6262 if check_struct sys/soundcard.h audio_buf_info bytes; then
6263     enable_sanitized sys/soundcard.h
6264 else
6265     test_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_sanitized sys/soundcard.h
6266     #include <sys/soundcard.h>
6267     audio_buf_info abc;
6268 EOF
6269 fi
6270
6271 enabled alsa && check_pkg_config alsa alsa "alsa/asoundlib.h" snd_pcm_htimestamp ||
6272     check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound
6273
6274 enabled libjack &&
6275     require_pkg_config libjack jack jack/jack.h jack_port_get_latency_range
6276
6277 enabled sndio && check_lib sndio sndio.h sio_open -lsndio
6278
6279 if enabled libcdio; then
6280     check_pkg_config libcdio libcdio_paranoia "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open ||
6281     check_pkg_config libcdio libcdio_paranoia "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open ||
6282     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6283     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6284     die "ERROR: No usable libcdio/cdparanoia found"
6285 fi
6286
6287 enabled libxcb && check_pkg_config libxcb "xcb >= 1.4" xcb/xcb.h xcb_connect ||
6288     disable libxcb_shm libxcb_shape libxcb_xfixes
6289
6290 if enabled libxcb; then
6291     enabled libxcb_shm    && check_pkg_config libxcb_shm    xcb-shm    xcb/shm.h    xcb_shm_attach
6292     enabled libxcb_shape  && check_pkg_config libxcb_shape  xcb-shape  xcb/shape.h  xcb_shape_get_rectangles
6293     enabled libxcb_xfixes && check_pkg_config libxcb_xfixes xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image
6294 fi
6295
6296 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6297
6298 # d3d11va requires linking directly to dxgi and d3d11 if not building for
6299 # the desktop api partition
6300 test_cpp <<EOF && enable uwp && d3d11va_extralibs="-ldxgi -ld3d11"
6301 #ifdef WINAPI_FAMILY
6302 #include <winapifamily.h>
6303 #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
6304 #error desktop, not uwp
6305 #else
6306 // WINAPI_FAMILY_APP, WINAPI_FAMILY_PHONE_APP => UWP
6307 #endif
6308 #else
6309 #error no family set
6310 #endif
6311 EOF
6312
6313 enabled vaapi &&
6314     check_lib vaapi va/va.h vaInitialize -lva
6315
6316 enabled vaapi &&
6317     check_cc vaapi "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)"
6318
6319 if enabled vaapi; then
6320     check_lib vaapi_drm "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm
6321     check_lib vaapi_x11 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 -lX11
6322 fi
6323
6324 enabled vaapi &&
6325     check_cpp_condition vaapi_1 "va/va.h" "VA_CHECK_VERSION(1, 0, 0)"
6326
6327 if enabled_all opencl libdrm ; then
6328     check_type "CL/cl_intel.h" "clCreateImageFromFdINTEL_fn" &&
6329         enable opencl_drm_beignet
6330     check_func_headers "CL/cl_ext.h" clImportMemoryARM &&
6331         enable opencl_drm_arm
6332 fi
6333
6334 if enabled_all opencl vaapi ; then
6335     enabled opencl_drm_beignet && enable opencl_vaapi_beignet
6336     if enabled libmfx ; then
6337         check_type "CL/cl.h CL/va_ext.h" "clCreateFromVA_APIMediaSurfaceINTEL_fn" &&
6338             enable opencl_vaapi_intel_media
6339     fi
6340 fi
6341
6342 if enabled_all opencl dxva2 ; then
6343     check_type "CL/cl_dx9_media_sharing.h" cl_dx9_surface_info_khr &&
6344         enable opencl_dxva2
6345 fi
6346
6347 if enabled_all opencl d3d11va ; then
6348     check_type "CL/cl_d3d11.h" clGetDeviceIDsFromD3D11KHR_fn &&
6349         enable opencl_d3d11
6350 fi
6351
6352 enabled vdpau &&
6353     check_cpp_condition vdpau vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP"
6354
6355 enabled vdpau &&
6356     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
6357
6358 enabled crystalhd && check_lib crystalhd "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd
6359
6360 if enabled x86; then
6361     case $target_os in
6362         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6363             ;;
6364         *)
6365             disable ffnvcodec cuvid nvdec nvenc
6366             ;;
6367     esac
6368 else
6369     disable ffnvcodec cuvid nvdec nvenc
6370 fi
6371
6372 enabled ffnvcodec && enable cuda
6373
6374 enabled nvenc &&
6375     test_cc -I$source_path <<EOF || disable nvenc
6376 #include <ffnvcodec/nvEncodeAPI.h>
6377 NV_ENCODE_API_FUNCTION_LIST flist;
6378 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6379 int main(void) { return 0; }
6380 EOF
6381
6382 enabled amf &&
6383     check_cpp_condition amf "AMF/core/Version.h" \
6384         "(AMF_VERSION_MAJOR << 48 | AMF_VERSION_MINOR << 32 | AMF_VERSION_RELEASE << 16 | AMF_VERSION_BUILD_NUM) >= 0x0001000400040001"
6385
6386 # Funny iconv installations are not unusual, so check it after all flags have been set
6387 if enabled libc_iconv; then
6388     check_func_headers iconv.h iconv
6389 elif enabled iconv; then
6390     check_func_headers iconv.h iconv || check_lib iconv iconv.h iconv -liconv
6391 fi
6392
6393 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6394
6395 # add some useful compiler flags if supported
6396 check_cflags -Wdeclaration-after-statement
6397 check_cflags -Wall
6398 check_cflags -Wdisabled-optimization
6399 check_cflags -Wpointer-arith
6400 check_cflags -Wredundant-decls
6401 check_cflags -Wwrite-strings
6402 check_cflags -Wtype-limits
6403 check_cflags -Wundef
6404 check_cflags -Wmissing-prototypes
6405 check_cflags -Wno-pointer-to-int-cast
6406 check_cflags -Wstrict-prototypes
6407 check_cflags -Wempty-body
6408
6409 if enabled extra_warnings; then
6410     check_cflags -Wcast-qual
6411     check_cflags -Wextra
6412     check_cflags -Wpedantic
6413 fi
6414
6415 check_disable_warning(){
6416     warning_flag=-W${1#-Wno-}
6417     test_cflags $unknown_warning_flags $warning_flag && add_cflags $1
6418 }
6419
6420 test_cflags -Werror=unused-command-line-argument &&
6421     append unknown_warning_flags "-Werror=unused-command-line-argument"
6422 test_cflags -Werror=unknown-warning-option &&
6423     append unknown_warning_flags "-Werror=unknown-warning-option"
6424
6425 check_disable_warning -Wno-parentheses
6426 check_disable_warning -Wno-switch
6427 check_disable_warning -Wno-format-zero-length
6428 check_disable_warning -Wno-pointer-sign
6429 check_disable_warning -Wno-unused-const-variable
6430 check_disable_warning -Wno-bool-operation
6431
6432 check_disable_warning_headers(){
6433     warning_flag=-W${1#-Wno-}
6434     test_cflags $warning_flag && add_cflags_headers $1
6435 }
6436
6437 check_disable_warning_headers -Wno-deprecated-declarations
6438 check_disable_warning_headers -Wno-unused-variable
6439
6440 test_cc <<EOF && enable blocks_extension
6441 void (^block)(void);
6442 EOF
6443
6444 # add some linker flags
6445 check_ldflags -Wl,--warn-common
6446 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6447 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir && add_ldsoflags -Wl,-rpath,$libdir
6448 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6449
6450 # add some strip flags
6451 check_stripflags -x
6452
6453 enabled neon_clobber_test &&
6454     check_ldflags -Wl,--wrap,avcodec_open2              \
6455                   -Wl,--wrap,avcodec_decode_audio4      \
6456                   -Wl,--wrap,avcodec_decode_video2      \
6457                   -Wl,--wrap,avcodec_decode_subtitle2   \
6458                   -Wl,--wrap,avcodec_encode_audio2      \
6459                   -Wl,--wrap,avcodec_encode_video2      \
6460                   -Wl,--wrap,avcodec_encode_subtitle    \
6461                   -Wl,--wrap,avcodec_send_packet        \
6462                   -Wl,--wrap,avcodec_receive_packet     \
6463                   -Wl,--wrap,avcodec_send_frame         \
6464                   -Wl,--wrap,avcodec_receive_frame      \
6465                   -Wl,--wrap,swr_convert                \
6466                   -Wl,--wrap,avresample_convert ||
6467     disable neon_clobber_test
6468
6469 enabled xmm_clobber_test &&
6470     check_ldflags -Wl,--wrap,avcodec_open2              \
6471                   -Wl,--wrap,avcodec_decode_audio4      \
6472                   -Wl,--wrap,avcodec_decode_video2      \
6473                   -Wl,--wrap,avcodec_decode_subtitle2   \
6474                   -Wl,--wrap,avcodec_encode_audio2      \
6475                   -Wl,--wrap,avcodec_encode_video2      \
6476                   -Wl,--wrap,avcodec_encode_subtitle    \
6477                   -Wl,--wrap,avcodec_send_packet        \
6478                   -Wl,--wrap,avcodec_receive_packet     \
6479                   -Wl,--wrap,avcodec_send_frame         \
6480                   -Wl,--wrap,avcodec_receive_frame      \
6481                   -Wl,--wrap,swr_convert                \
6482                   -Wl,--wrap,avresample_convert         \
6483                   -Wl,--wrap,sws_scale ||
6484     disable xmm_clobber_test
6485
6486 check_ld "cc" proper_dce <<EOF
6487 extern const int array[512];
6488 static inline int func(void) { return array[0]; }
6489 int main(void) { return 0; }
6490 EOF
6491
6492 if enabled proper_dce; then
6493     echo "X { local: *; };" > $TMPV
6494     if test_ldflags -Wl,${version_script},$TMPV; then
6495         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6496         quotes='""'
6497         test_cc <<EOF && enable symver_asm_label
6498 void ff_foo(void) __asm__ ("av_foo@VERSION");
6499 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6500 EOF
6501         test_cc <<EOF && enable symver_gnu_asm
6502 __asm__(".symver ff_foo,av_foo@VERSION");
6503 void ff_foo(void) {}
6504 EOF
6505     fi
6506 fi
6507
6508 if [ -z "$optflags" ]; then
6509     if enabled small; then
6510         optflags=$cflags_size
6511     elif enabled optimizations; then
6512         optflags=$cflags_speed
6513     else
6514         optflags=$cflags_noopt
6515     fi
6516 fi
6517
6518 if [ -z "$nvccflags" ]; then
6519     nvccflags=$nvccflags_default
6520 fi
6521
6522 if enabled x86_64 || enabled ppc64 || enabled aarch64; then
6523     nvccflags="$nvccflags -m64"
6524 else
6525     nvccflags="$nvccflags -m32"
6526 fi
6527
6528 check_optflags(){
6529     check_cflags "$@"
6530     enabled lto && check_ldflags "$@"
6531 }
6532
6533 check_optflags $optflags
6534 check_optflags -fno-math-errno
6535 check_optflags -fno-signed-zeros
6536
6537 if enabled lto; then
6538     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6539     check_cflags  -flto
6540     check_ldflags -flto $cpuflags
6541     disable inline_asm_direct_symbol_refs
6542 fi
6543
6544 enabled ftrapv && check_cflags -ftrapv
6545
6546 test_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6547 int x;
6548 EOF
6549
6550
6551 if enabled icc; then
6552     # Just warnings, no remarks
6553     check_cflags -w1
6554     # -wd: Disable following warnings
6555     # 144, 167, 556: -Wno-pointer-sign
6556     # 188: enumerated type mixed with another type
6557     # 1292: attribute "foo" ignored
6558     # 1419: external declaration in primary source file
6559     # 10006: ignoring unknown option -fno-signed-zeros
6560     # 10148: ignoring unknown option -Wno-parentheses
6561     # 10156: ignoring option '-W'; no argument required
6562     # 13200: No EMMS instruction before call to function
6563     # 13203: No EMMS instruction before return from function
6564     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6565     # 11030: Warning unknown option --as-needed
6566     # 10156: ignoring option '-export'; no argument required
6567     check_ldflags -wd10156,11030
6568     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6569     enable ebp_available
6570     # The test above does not test linking
6571     enabled lto && disable symver_asm_label
6572     if enabled x86_32; then
6573         icc_version=$($cc -dumpversion)
6574         test ${icc_version%%.*} -ge 11 &&
6575             check_cflags -falign-stack=maintain-16-byte ||
6576             disable aligned_stack
6577     fi
6578 elif enabled gcc; then
6579     check_optflags -fno-tree-vectorize
6580     check_cflags -Werror=format-security
6581     check_cflags -Werror=implicit-function-declaration
6582     check_cflags -Werror=missing-prototypes
6583     check_cflags -Werror=return-type
6584     check_cflags -Werror=vla
6585     check_cflags -Wformat
6586     check_cflags -fdiagnostics-color=auto
6587     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6588     if enabled x86_32; then
6589         case $target_os in
6590         *bsd*)
6591             # BSDs don't guarantee a 16 byte aligned stack, but we can
6592             # request GCC to try to maintain 16 byte alignment throughout
6593             # function calls. Library entry points that might call assembly
6594             # functions align the stack. (The parameter means 2^4 bytes.)
6595             check_cflags -mpreferred-stack-boundary=4
6596             ;;
6597         esac
6598     fi
6599 elif enabled llvm_gcc; then
6600     check_cflags -mllvm -stack-alignment=16
6601 elif enabled clang; then
6602     if enabled x86_32; then
6603         # Clang doesn't support maintaining alignment without assuming the
6604         # same alignment in every function. If 16 byte alignment would be
6605         # enabled, one would also have to either add attribute_align_arg on
6606         # every single entry point into the libraries or enable -mstackrealign
6607         # (doing stack realignment in every single function).
6608         case $target_os in
6609         mingw32|win32|*bsd*)
6610             disable aligned_stack
6611             ;;
6612         *)
6613             check_cflags -mllvm -stack-alignment=16
6614             check_cflags -mstack-alignment=16
6615             ;;
6616         esac
6617     else
6618         check_cflags -mllvm -stack-alignment=16
6619         check_cflags -mstack-alignment=16
6620     fi
6621     check_cflags -Qunused-arguments
6622     check_cflags -Werror=implicit-function-declaration
6623     check_cflags -Werror=missing-prototypes
6624     check_cflags -Werror=return-type
6625 elif enabled cparser; then
6626     add_cflags -Wno-missing-variable-declarations
6627     add_cflags -Wno-empty-statement
6628 elif enabled armcc; then
6629     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6630     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6631     # 2523: use of inline assembly is deprecated
6632     add_cflags -W${armcc_opt},--diag_suppress=2523
6633     add_cflags -W${armcc_opt},--diag_suppress=1207
6634     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6635     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6636     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6637     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6638 elif enabled pathscale; then
6639     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6640     disable inline_asm
6641 elif enabled_any msvc icl; then
6642     enabled x86_32 && disable aligned_stack
6643     enabled_all x86_32 debug && add_cflags -Oy-
6644     enabled debug && add_ldflags -debug
6645     enable pragma_deprecated
6646     if enabled icl; then
6647         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6648         # (correctly) on icl 13.x.
6649         test_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6650             add_cflags -Qansi-alias
6651         # Some inline asm is not compilable in debug
6652         if enabled debug; then
6653             disable ebp_available
6654             disable ebx_available
6655         fi
6656     fi
6657     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6658     check_cpp_condition log2 crtversion.h "_VC_CRT_MAJOR_VERSION >= 12"
6659     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6660     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6661     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6662     # MSVC 2013 and newer can handle it fine.
6663     # If this declspec fails, force including stdlib.h before the restrict redefinition
6664     # happens in config.h.
6665     if [ $restrict_keyword != restrict ]; then
6666         test_cc <<EOF || add_cflags -FIstdlib.h
6667 __declspec($restrict_keyword) void *foo(int);
6668 EOF
6669     fi
6670     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6671     # Issue has been fixed in MSVC v19.00.24218.
6672     test_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6673         check_cflags -d2SSAOptimizer-
6674     # enable utf-8 source processing on VS2015 U2 and newer
6675     test_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6676         add_cflags -utf-8
6677 fi
6678
6679 for pfx in "" host_; do
6680     varname=${pfx%_}cc_type
6681     eval "type=\$$varname"
6682     if [ "$type" = "msvc" ]; then
6683         test_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6684 static inline int foo(int a) { return a; }
6685 EOF
6686     fi
6687 done
6688
6689 case $as_type in
6690     clang)
6691         add_asflags -Qunused-arguments
6692     ;;
6693 esac
6694
6695 case $ld_type in
6696     clang)
6697         check_ldflags -Qunused-arguments
6698     ;;
6699 esac
6700
6701 enable frame_thread_encoder
6702
6703 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6704
6705 check_deps $CONFIG_LIST       \
6706            $CONFIG_EXTRA      \
6707            $HAVE_LIST         \
6708            $ALL_COMPONENTS    \
6709
6710 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"
6711 enabled avresample && warn "Building with deprecated library libavresample"
6712
6713 if test $target_os = "haiku"; then
6714     disable memalign
6715     disable posix_memalign
6716 fi
6717
6718 flatten_extralibs(){
6719     unset nested_entries
6720     list_name=$1
6721     eval list=\$${1}
6722     for entry in $list; do
6723         entry_copy=$entry
6724         resolve entry_copy
6725         append nested_entries $(filter '*_extralibs' $entry_copy)
6726         flat_entries=$(filter_out '*_extralibs' $entry_copy)
6727         eval $entry="\$flat_entries"
6728     done
6729     append $list_name "$nested_entries"
6730
6731     resolve nested_entries
6732     if test -n "$(filter '*_extralibs' $nested_entries)"; then
6733         flatten_extralibs $list_name
6734     fi
6735 }
6736
6737 flatten_extralibs_wrapper(){
6738     list_name=$1
6739     flatten_extralibs $list_name
6740     unique $list_name
6741     resolve $list_name
6742     eval $list_name=\$\(\$ldflags_filter \$$list_name\)
6743     eval printf \''%s'\' \""\$$list_name"\"
6744 }
6745
6746 for linkunit in $LIBRARY_LIST; do
6747     unset current_extralibs
6748     eval components=\$$(toupper ${linkunit})_COMPONENTS_LIST
6749     for comp in ${components}; do
6750         enabled $comp || continue
6751         comp_extralibs="${comp}_extralibs"
6752         append current_extralibs $comp_extralibs
6753     done
6754     eval prepend ${linkunit}_extralibs $current_extralibs
6755 done
6756
6757 for linkunit in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
6758     eval ${linkunit}_extralibs=\$\(flatten_extralibs_wrapper ${linkunit}_extralibs\)
6759 done
6760
6761 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6762
6763 for thread in $THREADS_LIST; do
6764     if enabled $thread; then
6765         test -n "$thread_type" &&
6766             die "ERROR: Only one thread type must be selected." ||
6767             thread_type="$thread"
6768     fi
6769 done
6770
6771 if disabled stdatomic; then
6772     if enabled atomics_gcc; then
6773         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
6774     elif enabled atomics_win32; then
6775         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
6776     elif enabled atomics_suncc; then
6777         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
6778     elif enabled pthreads; then
6779         add_compat atomics/pthread/stdatomic.o
6780         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
6781     else
6782         enabled threads && die "Threading is enabled, but no atomics are available"
6783         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
6784     fi
6785 fi
6786
6787 # Check if requested libraries were found.
6788 for lib in $AUTODETECT_LIBS; do
6789     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
6790 done
6791
6792 enabled zlib && add_cppflags -DZLIB_CONST
6793
6794 # conditional library dependencies, in linking order
6795 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6796 enabled afir_filter         && prepend avfilter_deps "avcodec"
6797 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6798 enabled aresample_filter    && prepend avfilter_deps "swresample"
6799 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6800 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6801 enabled convolve_filter     && prepend avfilter_deps "avcodec"
6802 enabled deconvolve_filter   && prepend avfilter_deps "avcodec"
6803 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6804 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6805 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6806 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6807 enabled firequalizer_filter && prepend avfilter_deps "avcodec"
6808 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6809 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6810 enabled pan_filter          && prepend avfilter_deps "swresample"
6811 enabled pp_filter           && prepend avfilter_deps "postproc"
6812 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6813 enabled resample_filter && prepend avfilter_deps "avresample"
6814 enabled sab_filter          && prepend avfilter_deps "swscale"
6815 enabled scale_filter    && prepend avfilter_deps "swscale"
6816 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6817 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6818 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6819 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6820 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6821 enabled signature_filter    && prepend avfilter_deps "avcodec avformat"
6822 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6823 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6824 enabled spp_filter          && prepend avfilter_deps "avcodec"
6825 enabled srcnn_filter        && prepend avfilter_deps "avformat"
6826 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6827 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6828 enabled zoompan_filter      && prepend avfilter_deps "swscale"
6829
6830 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6831
6832 #FIXME
6833 enabled sdl2_outdev     && add_cflags $(filter_out '-Dmain=SDL_main' $sdl2_cflags)
6834
6835 enabled opus_decoder    && prepend avcodec_deps "swresample"
6836
6837 expand_deps(){
6838     lib_deps=${1}_deps
6839     eval "deps=\$$lib_deps"
6840     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
6841     unique $lib_deps
6842 }
6843
6844 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6845 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6846
6847 map 'expand_deps $v' $LIBRARY_LIST
6848
6849 if test "$quiet" != "yes"; then
6850
6851 echo "install prefix            $prefix"
6852 echo "source path               $source_path"
6853 echo "C compiler                $cc"
6854 echo "C library                 $libc_type"
6855 if test "$host_cc" != "$cc"; then
6856     echo "host C compiler           $host_cc"
6857     echo "host C library            $host_libc_type"
6858 fi
6859 echo "ARCH                      $arch ($cpu)"
6860 if test "$build_suffix" != ""; then
6861     echo "build suffix              $build_suffix"
6862 fi
6863 if test "$progs_suffix" != ""; then
6864     echo "progs suffix              $progs_suffix"
6865 fi
6866 if test "$extra_version" != ""; then
6867     echo "version string suffix     $extra_version"
6868 fi
6869 echo "big-endian                ${bigendian-no}"
6870 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6871 if enabled x86; then
6872     echo "standalone assembly       ${x86asm-no}"
6873     echo "x86 assembler             ${x86asmexe}"
6874     echo "MMX enabled               ${mmx-no}"
6875     echo "MMXEXT enabled            ${mmxext-no}"
6876     echo "3DNow! enabled            ${amd3dnow-no}"
6877     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6878     echo "SSE enabled               ${sse-no}"
6879     echo "SSSE3 enabled             ${ssse3-no}"
6880     echo "AESNI enabled             ${aesni-no}"
6881     echo "AVX enabled               ${avx-no}"
6882     echo "AVX2 enabled              ${avx2-no}"
6883     echo "AVX-512 enabled           ${avx512-no}"
6884     echo "XOP enabled               ${xop-no}"
6885     echo "FMA3 enabled              ${fma3-no}"
6886     echo "FMA4 enabled              ${fma4-no}"
6887     echo "i686 features enabled     ${i686-no}"
6888     echo "CMOV is fast              ${fast_cmov-no}"
6889     echo "EBX available             ${ebx_available-no}"
6890     echo "EBP available             ${ebp_available-no}"
6891 fi
6892 if enabled aarch64; then
6893     echo "NEON enabled              ${neon-no}"
6894     echo "VFP enabled               ${vfp-no}"
6895 fi
6896 if enabled arm; then
6897     echo "ARMv5TE enabled           ${armv5te-no}"
6898     echo "ARMv6 enabled             ${armv6-no}"
6899     echo "ARMv6T2 enabled           ${armv6t2-no}"
6900     echo "VFP enabled               ${vfp-no}"
6901     echo "NEON enabled              ${neon-no}"
6902     echo "THUMB enabled             ${thumb-no}"
6903 fi
6904 if enabled mips; then
6905     echo "MIPS FPU enabled          ${mipsfpu-no}"
6906     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
6907     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
6908     echo "MIPS MSA enabled          ${msa-no}"
6909     echo "LOONGSON MMI enabled      ${mmi-no}"
6910 fi
6911 if enabled ppc; then
6912     echo "AltiVec enabled           ${altivec-no}"
6913     echo "VSX enabled               ${vsx-no}"
6914     echo "POWER8 enabled            ${power8-no}"
6915     echo "PPC 4xx optimizations     ${ppc4xx-no}"
6916     echo "dcbzl available           ${dcbzl-no}"
6917 fi
6918 echo "debug symbols             ${debug-no}"
6919 echo "strip symbols             ${stripping-no}"
6920 echo "optimize for size         ${small-no}"
6921 echo "optimizations             ${optimizations-no}"
6922 echo "static                    ${static-no}"
6923 echo "shared                    ${shared-no}"
6924 echo "postprocessing support    ${postproc-no}"
6925 echo "network support           ${network-no}"
6926 echo "threading support         ${thread_type-no}"
6927 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
6928 echo "texi2html enabled         ${texi2html-no}"
6929 echo "perl enabled              ${perl-no}"
6930 echo "pod2man enabled           ${pod2man-no}"
6931 echo "makeinfo enabled          ${makeinfo-no}"
6932 echo "makeinfo supports HTML    ${makeinfo_html-no}"
6933 test -n "$random_seed" &&
6934     echo "random seed               ${random_seed}"
6935 echo
6936
6937 echo "External libraries:"
6938 print_enabled '' $EXTERNAL_LIBRARY_LIST $EXTERNAL_AUTODETECT_LIBRARY_LIST | print_in_columns
6939 echo
6940
6941 echo "External libraries providing hardware acceleration:"
6942 print_enabled '' $HWACCEL_LIBRARY_LIST $HWACCEL_AUTODETECT_LIBRARY_LIST | print_in_columns
6943 echo
6944
6945 echo "Libraries:"
6946 print_enabled '' $LIBRARY_LIST | print_in_columns
6947 echo
6948
6949 echo "Programs:"
6950 print_enabled '' $PROGRAM_LIST | print_in_columns
6951 echo
6952
6953 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
6954     echo "Enabled ${type}s:"
6955     eval list=\$$(toupper $type)_LIST
6956     print_enabled '_*' $list | print_in_columns
6957     echo
6958 done
6959
6960 if test -n "$ignore_tests"; then
6961     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
6962     echo "Ignored FATE tests:"
6963     echo $ignore_tests | print_in_columns
6964     echo
6965 fi
6966
6967 echo "License: $license"
6968
6969 fi # test "$quiet" != "yes"
6970
6971 if test -n "$WARNINGS"; then
6972     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
6973     enabled fatal_warnings && exit 1
6974 fi
6975
6976 test -e Makefile || echo "include $source_path/Makefile" > Makefile
6977
6978 esc(){
6979     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
6980 }
6981
6982 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" > ffbuild/config.fate
6983
6984 enabled stripping || strip="echo skipping strip"
6985 enabled stripping || striptype=""
6986
6987 config_files="$TMPH ffbuild/config.mak doc/config.texi"
6988
6989 cat > ffbuild/config.mak <<EOF
6990 # Automatically generated by configure - do not modify!
6991 ifndef FFMPEG_CONFIG_MAK
6992 FFMPEG_CONFIG_MAK=1
6993 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
6994 prefix=$prefix
6995 LIBDIR=\$(DESTDIR)$libdir
6996 SHLIBDIR=\$(DESTDIR)$shlibdir
6997 INCDIR=\$(DESTDIR)$incdir
6998 BINDIR=\$(DESTDIR)$bindir
6999 DATADIR=\$(DESTDIR)$datadir
7000 DOCDIR=\$(DESTDIR)$docdir
7001 MANDIR=\$(DESTDIR)$mandir
7002 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
7003 INSTALL_NAME_DIR=$install_name_dir
7004 SRC_PATH=$source_path
7005 SRC_LINK=$source_link
7006 ifndef MAIN_MAKEFILE
7007 SRC_PATH:=\$(SRC_PATH:.%=..%)
7008 endif
7009 CC_IDENT=$cc_ident
7010 ARCH=$arch
7011 INTRINSICS=$intrinsics
7012 EXTERN_PREFIX=$extern_prefix
7013 CC=$cc
7014 CXX=$cxx
7015 AS=$as
7016 OBJCC=$objcc
7017 LD=$ld
7018 DEPCC=$dep_cc
7019 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
7020 DEPAS=$as
7021 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
7022 X86ASM=$x86asmexe
7023 DEPX86ASM=$x86asmexe
7024 DEPX86ASMFLAGS=\$(X86ASMFLAGS)
7025 AR=$ar
7026 ARFLAGS=$arflags
7027 AR_O=$ar_o
7028 AR_CMD=$ar
7029 NM_CMD=$nm
7030 RANLIB=$ranlib
7031 STRIP=$strip
7032 STRIPTYPE=$striptype
7033 NVCC=$nvcc
7034 CP=cp -p
7035 LN_S=$ln_s
7036 CPPFLAGS=$CPPFLAGS
7037 CFLAGS=$CFLAGS
7038 CXXFLAGS=$CXXFLAGS
7039 OBJCFLAGS=$OBJCFLAGS
7040 ASFLAGS=$ASFLAGS
7041 NVCCFLAGS=$nvccflags
7042 AS_C=$AS_C
7043 AS_O=$AS_O
7044 OBJCC_C=$OBJCC_C
7045 OBJCC_E=$OBJCC_E
7046 OBJCC_O=$OBJCC_O
7047 CC_C=$CC_C
7048 CC_E=$CC_E
7049 CC_O=$CC_O
7050 CXX_C=$CXX_C
7051 CXX_O=$CXX_O
7052 NVCC_C=$NVCC_C
7053 NVCC_O=$NVCC_O
7054 LD_O=$LD_O
7055 X86ASM_O=$X86ASM_O
7056 LD_LIB=$LD_LIB
7057 LD_PATH=$LD_PATH
7058 DLLTOOL=$dlltool
7059 WINDRES=$windres
7060 DEPWINDRES=$dep_cc
7061 DOXYGEN=$doxygen
7062 LDFLAGS=$LDFLAGS
7063 LDEXEFLAGS=$LDEXEFLAGS
7064 LDSOFLAGS=$LDSOFLAGS
7065 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
7066 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
7067 X86ASMFLAGS=$X86ASMFLAGS
7068 BUILDSUF=$build_suffix
7069 PROGSSUF=$progs_suffix
7070 FULLNAME=$FULLNAME
7071 LIBPREF=$LIBPREF
7072 LIBSUF=$LIBSUF
7073 LIBNAME=$LIBNAME
7074 SLIBPREF=$SLIBPREF
7075 SLIBSUF=$SLIBSUF
7076 EXESUF=$EXESUF
7077 EXTRA_VERSION=$extra_version
7078 CCDEP=$CCDEP
7079 CXXDEP=$CXXDEP
7080 CCDEP_FLAGS=$CCDEP_FLAGS
7081 ASDEP=$ASDEP
7082 ASDEP_FLAGS=$ASDEP_FLAGS
7083 X86ASMDEP=$X86ASMDEP
7084 X86ASMDEP_FLAGS=$X86ASMDEP_FLAGS
7085 CC_DEPFLAGS=$CC_DEPFLAGS
7086 AS_DEPFLAGS=$AS_DEPFLAGS
7087 X86ASM_DEPFLAGS=$X86ASM_DEPFLAGS
7088 HOSTCC=$host_cc
7089 HOSTLD=$host_ld
7090 HOSTCFLAGS=$host_cflags
7091 HOSTCPPFLAGS=$host_cppflags
7092 HOSTEXESUF=$HOSTEXESUF
7093 HOSTLDFLAGS=$host_ldflags
7094 HOSTEXTRALIBS=$host_extralibs
7095 DEPHOSTCC=$host_cc
7096 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
7097 HOSTCCDEP=$HOSTCCDEP
7098 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
7099 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
7100 HOSTCC_C=$HOSTCC_C
7101 HOSTCC_O=$HOSTCC_O
7102 HOSTLD_O=$HOSTLD_O
7103 TARGET_EXEC=$target_exec $target_exec_args
7104 TARGET_PATH=$target_path
7105 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
7106 CFLAGS-ffplay=${sdl2_cflags}
7107 CFLAGS_HEADERS=$CFLAGS_HEADERS
7108 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
7109 EXTRALIBS=$extralibs
7110 COMPAT_OBJS=$compat_objs
7111 INSTALL=$install
7112 LIBTARGET=${LIBTARGET}
7113 SLIBNAME=${SLIBNAME}
7114 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
7115 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
7116 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
7117 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
7118 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
7119 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
7120 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
7121 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
7122 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
7123 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
7124 NOREDZONE_FLAGS=$noredzone_flags
7125 LIBFUZZER_PATH=$libfuzzer_path
7126 IGNORE_TESTS=$ignore_tests
7127 EOF
7128
7129 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> ffbuild/config.mak' $LIBRARY_LIST
7130
7131 for entry in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
7132     eval echo "EXTRALIBS-${entry}=\$${entry}_extralibs" >> ffbuild/config.mak
7133 done
7134
7135 cat > $TMPH <<EOF
7136 /* Automatically generated by configure - do not modify! */
7137 #ifndef FFMPEG_CONFIG_H
7138 #define FFMPEG_CONFIG_H
7139 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
7140 #define FFMPEG_LICENSE "$(c_escape $license)"
7141 #define CONFIG_THIS_YEAR 2018
7142 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
7143 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
7144 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
7145 #define av_restrict $restrict_keyword
7146 #define EXTERN_PREFIX "${extern_prefix}"
7147 #define EXTERN_ASM ${extern_prefix}
7148 #define BUILDSUF "$build_suffix"
7149 #define SLIBSUF "$SLIBSUF"
7150 #define HAVE_MMX2 HAVE_MMXEXT
7151 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
7152 EOF
7153
7154 test -n "$assert_level" &&
7155     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
7156
7157 test -n "$malloc_prefix" &&
7158     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
7159
7160 if enabled x86asm; then
7161     append config_files $TMPASM
7162     cat > $TMPASM <<EOF
7163 ; Automatically generated by configure - do not modify!
7164 EOF
7165 fi
7166
7167 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
7168
7169
7170 mkdir -p doc
7171 mkdir -p tests
7172 mkdir -p tests/api
7173 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
7174
7175 print_config ARCH_   "$config_files" $ARCH_LIST
7176 print_config HAVE_   "$config_files" $HAVE_LIST
7177 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
7178                                      $CONFIG_EXTRA      \
7179                                      $ALL_COMPONENTS    \
7180
7181 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
7182 echo "endif # FFMPEG_CONFIG_MAK" >> ffbuild/config.mak
7183
7184 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
7185 cp_if_changed $TMPH config.h
7186 touch ffbuild/.config
7187
7188 enabled x86asm && cp_if_changed $TMPASM config.asm
7189
7190 cat > $TMPH <<EOF
7191 /* Generated by ffmpeg configure */
7192 #ifndef AVUTIL_AVCONFIG_H
7193 #define AVUTIL_AVCONFIG_H
7194 EOF
7195
7196 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
7197
7198 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
7199
7200 cp_if_changed $TMPH libavutil/avconfig.h
7201
7202 full_filter_name(){
7203     sed -n "s/^extern AVFilter ff_\([avfsinkrc]\{2,5\}\)_$1;/\1_$1/p" $source_path/libavfilter/allfilters.c
7204 }
7205
7206 # generate the lists of enabled components
7207 print_enabled_components(){
7208     file=$1
7209     struct_name=$2
7210     name=$3
7211     shift 3
7212     echo "static const $struct_name * const $name[] = {" > $TMPH
7213     for c in $*; do
7214         if enabled $c; then
7215             case $name in
7216                 filter_list)
7217                     c=$(full_filter_name $(remove_suffix _filter $c))
7218                 ;;
7219                 indev_list)
7220                     c=$(add_suffix _demuxer $(remove_suffix _indev $c))
7221                 ;;
7222                 outdev_list)
7223                     c=$(add_suffix _muxer $(remove_suffix _outdev $c))
7224                 ;;
7225             esac
7226             printf "    &ff_%s,\n" $c >> $TMPH
7227         fi
7228     done
7229     if [ "$name" = "filter_list" ]; then
7230         for c in asrc_abuffer vsrc_buffer asink_abuffer vsink_buffer; do
7231             printf "    &ff_%s,\n" $c >> $TMPH
7232         done
7233     fi
7234     echo "    NULL };" >> $TMPH
7235     cp_if_changed $TMPH $file
7236 }
7237
7238 print_enabled_components libavfilter/filter_list.c AVFilter filter_list $FILTER_LIST
7239 print_enabled_components libavcodec/codec_list.c AVCodec codec_list $CODEC_LIST
7240 print_enabled_components libavcodec/parser_list.c AVCodecParser parser_list $PARSER_LIST
7241 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
7242 print_enabled_components libavformat/demuxer_list.c AVInputFormat demuxer_list $DEMUXER_LIST
7243 print_enabled_components libavformat/muxer_list.c AVOutputFormat muxer_list $MUXER_LIST
7244 print_enabled_components libavdevice/indev_list.c AVInputFormat indev_list $INDEV_LIST
7245 print_enabled_components libavdevice/outdev_list.c AVOutputFormat outdev_list $OUTDEV_LIST
7246 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
7247
7248 # Settings for pkg-config files
7249
7250 cat > $TMPH <<EOF
7251 # Automatically generated by configure - do not modify!
7252 shared=$shared
7253 build_suffix=$build_suffix
7254 prefix=$prefix
7255 libdir=$libdir
7256 incdir=$incdir
7257 rpath=$(enabled rpath && echo "-Wl,-rpath,\${libdir}")
7258 source_path=${source_path}
7259 LIBPREF=${LIBPREF}
7260 LIBSUF=${LIBSUF}
7261 extralibs_avutil="$avutil_extralibs"
7262 extralibs_avcodec="$avcodec_extralibs"
7263 extralibs_avformat="$avformat_extralibs"
7264 extralibs_avdevice="$avdevice_extralibs"
7265 extralibs_avfilter="$avfilter_extralibs"
7266 extralibs_avresample="$avresample_extralibs"
7267 extralibs_postproc="$postproc_extralibs"
7268 extralibs_swscale="$swscale_extralibs"
7269 extralibs_swresample="$swresample_extralibs"
7270 EOF
7271
7272 for lib in $LIBRARY_LIST; do
7273     lib_deps="$(eval echo \$${lib}_deps)"
7274     echo ${lib}_deps=\"$lib_deps\" >> $TMPH
7275 done
7276
7277 cp_if_changed $TMPH ffbuild/config.sh