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 eac3_core_bsf_select="ac3_parser"
2996 filter_units_bsf_select="cbs"
2997 h264_metadata_bsf_deps="const_nan"
2998 h264_metadata_bsf_select="cbs_h264"
2999 h264_redundant_pps_bsf_select="cbs_h264"
3000 hevc_metadata_bsf_select="cbs_h265"
3001 mjpeg2jpeg_bsf_select="jpegtables"
3002 mpeg2_metadata_bsf_select="cbs_mpeg2"
3003 trace_headers_bsf_select="cbs"
3004 vp9_metadata_bsf_select="cbs_vp9"
3005
3006 # external libraries
3007 aac_at_decoder_deps="audiotoolbox"
3008 aac_at_decoder_select="aac_adtstoasc_bsf"
3009 ac3_at_decoder_deps="audiotoolbox"
3010 ac3_at_decoder_select="ac3_parser"
3011 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
3012 alac_at_decoder_deps="audiotoolbox"
3013 amr_nb_at_decoder_deps="audiotoolbox"
3014 avisynth_deps_any="libdl LoadLibrary"
3015 avisynth_demuxer_deps="avisynth"
3016 avisynth_demuxer_select="riffdec"
3017 eac3_at_decoder_deps="audiotoolbox"
3018 eac3_at_decoder_select="ac3_parser"
3019 gsm_ms_at_decoder_deps="audiotoolbox"
3020 ilbc_at_decoder_deps="audiotoolbox"
3021 mp1_at_decoder_deps="audiotoolbox"
3022 mp2_at_decoder_deps="audiotoolbox"
3023 mp3_at_decoder_deps="audiotoolbox"
3024 mp1_at_decoder_select="mpegaudioheader"
3025 mp2_at_decoder_select="mpegaudioheader"
3026 mp3_at_decoder_select="mpegaudioheader"
3027 pcm_alaw_at_decoder_deps="audiotoolbox"
3028 pcm_mulaw_at_decoder_deps="audiotoolbox"
3029 qdmc_at_decoder_deps="audiotoolbox"
3030 qdm2_at_decoder_deps="audiotoolbox"
3031 aac_at_encoder_deps="audiotoolbox"
3032 aac_at_encoder_select="audio_frame_queue"
3033 alac_at_encoder_deps="audiotoolbox"
3034 alac_at_encoder_select="audio_frame_queue"
3035 ilbc_at_encoder_deps="audiotoolbox"
3036 ilbc_at_encoder_select="audio_frame_queue"
3037 pcm_alaw_at_encoder_deps="audiotoolbox"
3038 pcm_alaw_at_encoder_select="audio_frame_queue"
3039 pcm_mulaw_at_encoder_deps="audiotoolbox"
3040 pcm_mulaw_at_encoder_select="audio_frame_queue"
3041 chromaprint_muxer_deps="chromaprint"
3042 h264_videotoolbox_encoder_deps="pthreads"
3043 h264_videotoolbox_encoder_select="videotoolbox_encoder"
3044 hevc_videotoolbox_encoder_deps="pthreads"
3045 hevc_videotoolbox_encoder_select="videotoolbox_encoder"
3046 libaom_av1_decoder_deps="libaom"
3047 libaom_av1_encoder_deps="libaom"
3048 libcelt_decoder_deps="libcelt"
3049 libcodec2_decoder_deps="libcodec2"
3050 libcodec2_encoder_deps="libcodec2"
3051 libfdk_aac_decoder_deps="libfdk_aac"
3052 libfdk_aac_encoder_deps="libfdk_aac"
3053 libfdk_aac_encoder_select="audio_frame_queue"
3054 libgme_demuxer_deps="libgme"
3055 libgsm_decoder_deps="libgsm"
3056 libgsm_encoder_deps="libgsm"
3057 libgsm_ms_decoder_deps="libgsm"
3058 libgsm_ms_encoder_deps="libgsm"
3059 libilbc_decoder_deps="libilbc"
3060 libilbc_encoder_deps="libilbc"
3061 libkvazaar_encoder_deps="libkvazaar"
3062 libmodplug_demuxer_deps="libmodplug"
3063 libmp3lame_encoder_deps="libmp3lame"
3064 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
3065 libopencore_amrnb_decoder_deps="libopencore_amrnb"
3066 libopencore_amrnb_encoder_deps="libopencore_amrnb"
3067 libopencore_amrnb_encoder_select="audio_frame_queue"
3068 libopencore_amrwb_decoder_deps="libopencore_amrwb"
3069 libopenh264_decoder_deps="libopenh264"
3070 libopenh264_decoder_select="h264_mp4toannexb_bsf"
3071 libopenh264_encoder_deps="libopenh264"
3072 libopenjpeg_decoder_deps="libopenjpeg"
3073 libopenjpeg_encoder_deps="libopenjpeg"
3074 libopenmpt_demuxer_deps="libopenmpt"
3075 libopus_decoder_deps="libopus"
3076 libopus_encoder_deps="libopus"
3077 libopus_encoder_select="audio_frame_queue"
3078 librsvg_decoder_deps="librsvg"
3079 libshine_encoder_deps="libshine"
3080 libshine_encoder_select="audio_frame_queue"
3081 libspeex_decoder_deps="libspeex"
3082 libspeex_encoder_deps="libspeex"
3083 libspeex_encoder_select="audio_frame_queue"
3084 libtheora_encoder_deps="libtheora"
3085 libtwolame_encoder_deps="libtwolame"
3086 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
3087 libvorbis_decoder_deps="libvorbis"
3088 libvorbis_encoder_deps="libvorbis libvorbisenc"
3089 libvorbis_encoder_select="audio_frame_queue"
3090 libvpx_vp8_decoder_deps="libvpx"
3091 libvpx_vp8_encoder_deps="libvpx"
3092 libvpx_vp9_decoder_deps="libvpx"
3093 libvpx_vp9_encoder_deps="libvpx"
3094 libwavpack_encoder_deps="libwavpack"
3095 libwavpack_encoder_select="audio_frame_queue"
3096 libwebp_encoder_deps="libwebp"
3097 libwebp_anim_encoder_deps="libwebp"
3098 libx262_encoder_deps="libx262"
3099 libx264_encoder_deps="libx264"
3100 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
3101 libx264rgb_encoder_select="libx264_encoder"
3102 libx265_encoder_deps="libx265"
3103 libxavs_encoder_deps="libxavs"
3104 libxvid_encoder_deps="libxvid"
3105 libzvbi_teletext_decoder_deps="libzvbi"
3106 vapoursynth_demuxer_deps="vapoursynth"
3107 videotoolbox_suggest="coreservices"
3108 videotoolbox_deps="corefoundation coremedia corevideo"
3109 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
3110
3111 # demuxers / muxers
3112 ac3_demuxer_select="ac3_parser"
3113 aiff_muxer_select="iso_media"
3114 asf_demuxer_select="riffdec"
3115 asf_o_demuxer_select="riffdec"
3116 asf_muxer_select="riffenc"
3117 asf_stream_muxer_select="asf_muxer"
3118 avi_demuxer_select="iso_media riffdec exif"
3119 avi_muxer_select="riffenc"
3120 caf_demuxer_select="iso_media riffdec"
3121 caf_muxer_select="iso_media"
3122 dash_muxer_select="mp4_muxer"
3123 dash_demuxer_deps="libxml2"
3124 dirac_demuxer_select="dirac_parser"
3125 dts_demuxer_select="dca_parser"
3126 dtshd_demuxer_select="dca_parser"
3127 dv_demuxer_select="dvprofile"
3128 dv_muxer_select="dvprofile"
3129 dxa_demuxer_select="riffdec"
3130 eac3_demuxer_select="ac3_parser"
3131 f4v_muxer_select="mov_muxer"
3132 fifo_muxer_deps="threads"
3133 flac_demuxer_select="flac_parser"
3134 hds_muxer_select="flv_muxer"
3135 hls_muxer_select="mpegts_muxer"
3136 hls_muxer_suggest="gcrypt openssl"
3137 image2_alias_pix_demuxer_select="image2_demuxer"
3138 image2_brender_pix_demuxer_select="image2_demuxer"
3139 ipod_muxer_select="mov_muxer"
3140 ismv_muxer_select="mov_muxer"
3141 matroska_audio_muxer_select="matroska_muxer"
3142 matroska_demuxer_select="iso_media riffdec"
3143 matroska_demuxer_suggest="bzlib lzo zlib"
3144 matroska_muxer_select="iso_media riffenc"
3145 mmf_muxer_select="riffenc"
3146 mov_demuxer_select="iso_media riffdec"
3147 mov_demuxer_suggest="zlib"
3148 mov_muxer_select="iso_media riffenc rtpenc_chain"
3149 mp3_demuxer_select="mpegaudio_parser"
3150 mp3_muxer_select="mpegaudioheader"
3151 mp4_muxer_select="mov_muxer"
3152 mpegts_demuxer_select="iso_media"
3153 mpegts_muxer_select="adts_muxer latm_muxer"
3154 mpegtsraw_demuxer_select="mpegts_demuxer"
3155 mxf_d10_muxer_select="mxf_muxer"
3156 mxf_opatom_muxer_select="mxf_muxer"
3157 nut_muxer_select="riffenc"
3158 nuv_demuxer_select="riffdec"
3159 oga_muxer_select="ogg_muxer"
3160 ogg_demuxer_select="dirac_parse"
3161 ogv_muxer_select="ogg_muxer"
3162 opus_muxer_select="ogg_muxer"
3163 psp_muxer_select="mov_muxer"
3164 rtp_demuxer_select="sdp_demuxer"
3165 rtp_muxer_select="golomb"
3166 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3167 rtsp_demuxer_select="http_protocol rtpdec"
3168 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3169 sap_demuxer_select="sdp_demuxer"
3170 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3171 sdp_demuxer_select="rtpdec"
3172 smoothstreaming_muxer_select="ismv_muxer"
3173 spdif_demuxer_select="adts_header"
3174 spdif_muxer_select="adts_header"
3175 spx_muxer_select="ogg_muxer"
3176 swf_demuxer_suggest="zlib"
3177 tak_demuxer_select="tak_parser"
3178 tg2_muxer_select="mov_muxer"
3179 tgp_muxer_select="mov_muxer"
3180 vobsub_demuxer_select="mpegps_demuxer"
3181 w64_demuxer_select="wav_demuxer"
3182 w64_muxer_select="wav_muxer"
3183 wav_demuxer_select="riffdec"
3184 wav_muxer_select="riffenc"
3185 webm_muxer_select="iso_media riffenc"
3186 webm_dash_manifest_demuxer_select="matroska_demuxer"
3187 wtv_demuxer_select="mpegts_demuxer riffdec"
3188 wtv_muxer_select="mpegts_muxer riffenc"
3189 xmv_demuxer_select="riffdec"
3190 xwma_demuxer_select="riffdec"
3191
3192 # indevs / outdevs
3193 android_camera_indev_deps="android camera2ndk mediandk pthreads"
3194 android_camera_indev_extralibs="-landroid -lcamera2ndk -lmediandk"
3195 alsa_indev_deps="alsa"
3196 alsa_outdev_deps="alsa"
3197 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3198 avfoundation_indev_suggest="coregraphics applicationservices"
3199 avfoundation_indev_extralibs="-framework Foundation"
3200 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3201 caca_outdev_deps="libcaca"
3202 decklink_deps_any="libdl LoadLibrary"
3203 decklink_indev_deps="decklink threads"
3204 decklink_indev_extralibs="-lstdc++"
3205 decklink_outdev_deps="decklink threads"
3206 decklink_outdev_extralibs="-lstdc++"
3207 libndi_newtek_indev_deps="libndi_newtek"
3208 libndi_newtek_indev_extralibs="-lndi"
3209 libndi_newtek_outdev_deps="libndi_newtek"
3210 libndi_newtek_outdev_extralibs="-lndi"
3211 dshow_indev_deps="IBaseFilter"
3212 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3213 fbdev_indev_deps="linux_fb_h"
3214 fbdev_outdev_deps="linux_fb_h"
3215 gdigrab_indev_deps="CreateDIBSection"
3216 gdigrab_indev_extralibs="-lgdi32"
3217 gdigrab_indev_select="bmp_decoder"
3218 iec61883_indev_deps="libiec61883"
3219 jack_indev_deps="libjack"
3220 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3221 kmsgrab_indev_deps="libdrm"
3222 lavfi_indev_deps="avfilter"
3223 libcdio_indev_deps="libcdio"
3224 libdc1394_indev_deps="libdc1394"
3225 openal_indev_deps="openal"
3226 opengl_outdev_deps="opengl"
3227 oss_indev_deps_any="sys_soundcard_h"
3228 oss_outdev_deps_any="sys_soundcard_h"
3229 pulse_indev_deps="libpulse"
3230 pulse_outdev_deps="libpulse"
3231 sdl2_outdev_deps="sdl2"
3232 sndio_indev_deps="sndio"
3233 sndio_outdev_deps="sndio"
3234 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3235 v4l2_indev_suggest="libv4l2"
3236 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3237 v4l2_outdev_suggest="libv4l2"
3238 vfwcap_indev_deps="vfw32 vfwcap_defines"
3239 xcbgrab_indev_deps="libxcb"
3240 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3241 xv_outdev_deps="xlib"
3242
3243 # protocols
3244 async_protocol_deps="threads"
3245 bluray_protocol_deps="libbluray"
3246 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3247 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl mbedtls"
3248 ffrtmpcrypt_protocol_select="tcp_protocol"
3249 ffrtmphttp_protocol_conflict="librtmp_protocol"
3250 ffrtmphttp_protocol_select="http_protocol"
3251 ftp_protocol_select="tcp_protocol"
3252 gopher_protocol_select="network"
3253 http_protocol_select="tcp_protocol"
3254 http_protocol_suggest="zlib"
3255 httpproxy_protocol_select="tcp_protocol"
3256 httpproxy_protocol_suggest="zlib"
3257 https_protocol_select="tls_protocol"
3258 https_protocol_suggest="zlib"
3259 icecast_protocol_select="http_protocol"
3260 librtmp_protocol_deps="librtmp"
3261 librtmpe_protocol_deps="librtmp"
3262 librtmps_protocol_deps="librtmp"
3263 librtmpt_protocol_deps="librtmp"
3264 librtmpte_protocol_deps="librtmp"
3265 libsmbclient_protocol_deps="libsmbclient gplv3"
3266 libssh_protocol_deps="libssh"
3267 libtls_conflict="openssl gnutls mbedtls"
3268 mmsh_protocol_select="http_protocol"
3269 mmst_protocol_select="network"
3270 libsrt_protocol_deps="libsrt"
3271 libsrt_protocol_select="network"
3272 rtmp_protocol_conflict="librtmp_protocol"
3273 rtmp_protocol_select="tcp_protocol"
3274 rtmp_protocol_suggest="zlib"
3275 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3276 rtmpe_protocol_suggest="zlib"
3277 rtmps_protocol_conflict="librtmp_protocol"
3278 rtmps_protocol_select="tls_protocol"
3279 rtmps_protocol_suggest="zlib"
3280 rtmpt_protocol_select="ffrtmphttp_protocol"
3281 rtmpt_protocol_suggest="zlib"
3282 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3283 rtmpte_protocol_suggest="zlib"
3284 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3285 rtmpts_protocol_suggest="zlib"
3286 rtp_protocol_select="udp_protocol"
3287 schannel_conflict="openssl gnutls libtls mbedtls"
3288 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3289 sctp_protocol_select="network"
3290 securetransport_conflict="openssl gnutls libtls mbedtls"
3291 srtp_protocol_select="rtp_protocol srtp"
3292 tcp_protocol_select="network"
3293 tls_protocol_deps_any="gnutls openssl schannel securetransport libtls mbedtls"
3294 tls_protocol_select="tcp_protocol"
3295 udp_protocol_select="network"
3296 udplite_protocol_select="network"
3297 unix_protocol_deps="sys_un_h"
3298 unix_protocol_select="network"
3299
3300 # filters
3301 afftfilt_filter_deps="avcodec"
3302 afftfilt_filter_select="fft"
3303 afir_filter_deps="avcodec"
3304 afir_filter_select="fft"
3305 amovie_filter_deps="avcodec avformat"
3306 aresample_filter_deps="swresample"
3307 ass_filter_deps="libass"
3308 atempo_filter_deps="avcodec"
3309 atempo_filter_select="rdft"
3310 avgblur_opencl_filter_deps="opencl"
3311 azmq_filter_deps="libzmq"
3312 blackframe_filter_deps="gpl"
3313 boxblur_filter_deps="gpl"
3314 boxblur_opencl_filter_deps="opencl gpl"
3315 bs2b_filter_deps="libbs2b"
3316 colormatrix_filter_deps="gpl"
3317 convolution_opencl_filter_deps="opencl"
3318 convolve_filter_deps="avcodec"
3319 convolve_filter_select="fft"
3320 coreimage_filter_deps="coreimage appkit"
3321 coreimage_filter_extralibs="-framework OpenGL"
3322 coreimagesrc_filter_deps="coreimage appkit"
3323 coreimagesrc_filter_extralibs="-framework OpenGL"
3324 cover_rect_filter_deps="avcodec avformat gpl"
3325 cropdetect_filter_deps="gpl"
3326 deconvolve_filter_deps="avcodec"
3327 deconvolve_filter_select="fft"
3328 deinterlace_qsv_filter_deps="libmfx"
3329 deinterlace_vaapi_filter_deps="vaapi"
3330 delogo_filter_deps="gpl"
3331 denoise_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3332 deshake_filter_select="pixelutils"
3333 drawtext_filter_deps="libfreetype"
3334 drawtext_filter_suggest="libfontconfig libfribidi"
3335 elbg_filter_deps="avcodec"
3336 eq_filter_deps="gpl"
3337 fftfilt_filter_deps="avcodec"
3338 fftfilt_filter_select="rdft"
3339 fftdnoiz_filter_deps="avcodec"
3340 fftdnoiz_filter_select="fft"
3341 find_rect_filter_deps="avcodec avformat gpl"
3342 firequalizer_filter_deps="avcodec"
3343 firequalizer_filter_select="rdft"
3344 flite_filter_deps="libflite"
3345 framerate_filter_select="pixelutils"
3346 frei0r_filter_deps="frei0r libdl"
3347 frei0r_src_filter_deps="frei0r libdl"
3348 fspp_filter_deps="gpl"
3349 geq_filter_deps="gpl"
3350 histeq_filter_deps="gpl"
3351 hqdn3d_filter_deps="gpl"
3352 interlace_filter_deps="gpl"
3353 kerndeint_filter_deps="gpl"
3354 ladspa_filter_deps="ladspa libdl"
3355 lv2_filter_deps="lv2"
3356 mcdeint_filter_deps="avcodec gpl"
3357 movie_filter_deps="avcodec avformat"
3358 mpdecimate_filter_deps="gpl"
3359 mpdecimate_filter_select="pixelutils"
3360 mptestsrc_filter_deps="gpl"
3361 negate_filter_deps="lut_filter"
3362 nnedi_filter_deps="gpl"
3363 ocr_filter_deps="libtesseract"
3364 ocv_filter_deps="libopencv"
3365 openclsrc_filter_deps="opencl"
3366 overlay_opencl_filter_deps="opencl"
3367 overlay_qsv_filter_deps="libmfx"
3368 overlay_qsv_filter_select="qsvvpp"
3369 owdenoise_filter_deps="gpl"
3370 pan_filter_deps="swresample"
3371 perspective_filter_deps="gpl"
3372 phase_filter_deps="gpl"
3373 pp7_filter_deps="gpl"
3374 pp_filter_deps="gpl postproc"
3375 procamp_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3376 program_opencl_filter_deps="opencl"
3377 pullup_filter_deps="gpl"
3378 removelogo_filter_deps="avcodec avformat swscale"
3379 repeatfields_filter_deps="gpl"
3380 resample_filter_deps="avresample"
3381 rubberband_filter_deps="librubberband"
3382 sab_filter_deps="gpl swscale"
3383 scale2ref_filter_deps="swscale"
3384 scale_filter_deps="swscale"
3385 scale_qsv_filter_deps="libmfx"
3386 select_filter_select="pixelutils"
3387 sharpness_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3388 showcqt_filter_deps="avcodec avformat swscale"
3389 showcqt_filter_suggest="libfontconfig libfreetype"
3390 showcqt_filter_select="fft"
3391 showfreqs_filter_deps="avcodec"
3392 showfreqs_filter_select="fft"
3393 showspectrum_filter_deps="avcodec"
3394 showspectrum_filter_select="fft"
3395 showspectrumpic_filter_deps="avcodec"
3396 showspectrumpic_filter_select="fft"
3397 signature_filter_deps="gpl avcodec avformat"
3398 smartblur_filter_deps="gpl swscale"
3399 sofalizer_filter_deps="libmysofa avcodec"
3400 sofalizer_filter_select="fft"
3401 spectrumsynth_filter_deps="avcodec"
3402 spectrumsynth_filter_select="fft"
3403 spp_filter_deps="gpl avcodec"
3404 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3405 srcnn_filter_deps="avformat"
3406 srcnn_filter_select="dnn"
3407 stereo3d_filter_deps="gpl"
3408 subtitles_filter_deps="avformat avcodec libass"
3409 super2xsai_filter_deps="gpl"
3410 pixfmts_super2xsai_test_deps="super2xsai_filter"
3411 tinterlace_filter_deps="gpl"
3412 tinterlace_merge_test_deps="tinterlace_filter"
3413 tinterlace_pad_test_deps="tinterlace_filter"
3414 tonemap_filter_deps="const_nan"
3415 tonemap_opencl_filter_deps="opencl const_nan"
3416 unsharp_opencl_filter_deps="opencl"
3417 uspp_filter_deps="gpl avcodec"
3418 vaguedenoiser_filter_deps="gpl"
3419 vidstabdetect_filter_deps="libvidstab"
3420 vidstabtransform_filter_deps="libvidstab"
3421 libvmaf_filter_deps="libvmaf pthreads"
3422 zmq_filter_deps="libzmq"
3423 zoompan_filter_deps="swscale"
3424 zscale_filter_deps="libzimg const_nan"
3425 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3426 vpp_qsv_filter_deps="libmfx"
3427 vpp_qsv_filter_select="qsvvpp"
3428
3429 # examples
3430 avio_dir_cmd_deps="avformat avutil"
3431 avio_reading_deps="avformat avcodec avutil"
3432 decode_audio_example_deps="avcodec avutil"
3433 decode_video_example_deps="avcodec avutil"
3434 demuxing_decoding_example_deps="avcodec avformat avutil"
3435 encode_audio_example_deps="avcodec avutil"
3436 encode_video_example_deps="avcodec avutil"
3437 extract_mvs_example_deps="avcodec avformat avutil"
3438 filter_audio_example_deps="avfilter avutil"
3439 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3440 filtering_video_example_deps="avfilter avcodec avformat avutil"
3441 http_multiclient_example_deps="avformat avutil fork"
3442 hw_decode_example_deps="avcodec avformat avutil"
3443 metadata_example_deps="avformat avutil"
3444 muxing_example_deps="avcodec avformat avutil swscale"
3445 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3446 remuxing_example_deps="avcodec avformat avutil"
3447 resampling_audio_example_deps="avutil swresample"
3448 scaling_video_example_deps="avutil swscale"
3449 transcode_aac_example_deps="avcodec avformat swresample"
3450 transcoding_example_deps="avfilter avcodec avformat avutil"
3451 vaapi_encode_example_deps="avcodec avutil h264_vaapi_encoder"
3452 vaapi_transcode_example_deps="avcodec avformat avutil h264_vaapi_encoder"
3453
3454 # EXTRALIBS_LIST
3455 cpu_init_extralibs="pthreads_extralibs"
3456 cws2fws_extralibs="zlib_extralibs"
3457
3458 # libraries, in linking order
3459 avcodec_deps="avutil"
3460 avcodec_suggest="libm"
3461 avcodec_select="null_bsf"
3462 avdevice_deps="avformat avcodec avutil"
3463 avdevice_suggest="libm"
3464 avfilter_deps="avutil"
3465 avfilter_suggest="libm"
3466 avformat_deps="avcodec avutil"
3467 avformat_suggest="libm network zlib"
3468 avresample_deps="avutil"
3469 avresample_suggest="libm"
3470 avutil_suggest="clock_gettime ffnvcodec libm libdrm libmfx opencl user32 vaapi videotoolbox corefoundation corevideo coremedia bcrypt"
3471 postproc_deps="avutil gpl"
3472 postproc_suggest="libm"
3473 swresample_deps="avutil"
3474 swresample_suggest="libm libsoxr"
3475 swscale_deps="avutil"
3476 swscale_suggest="libm"
3477
3478 avcodec_extralibs="pthreads_extralibs iconv_extralibs"
3479 avfilter_extralibs="pthreads_extralibs"
3480 avutil_extralibs="d3d11va_extralibs nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3481
3482 # programs
3483 ffmpeg_deps="avcodec avfilter avformat"
3484 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3485                null_filter
3486                trim_filter"
3487 ffmpeg_suggest="ole32 psapi shell32"
3488 ffplay_deps="avcodec avformat swscale swresample sdl2"
3489 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3490 ffplay_suggest="shell32"
3491 ffprobe_deps="avcodec avformat"
3492 ffprobe_suggest="shell32"
3493
3494 # documentation
3495 podpages_deps="perl"
3496 manpages_deps="perl pod2man"
3497 htmlpages_deps="perl"
3498 htmlpages_deps_any="makeinfo_html texi2html"
3499 txtpages_deps="perl makeinfo"
3500 doc_deps_any="manpages htmlpages podpages txtpages"
3501
3502 # default parameters
3503
3504 logfile="ffbuild/config.log"
3505
3506 # installation paths
3507 prefix_default="/usr/local"
3508 bindir_default='${prefix}/bin'
3509 datadir_default='${prefix}/share/ffmpeg'
3510 docdir_default='${prefix}/share/doc/ffmpeg'
3511 incdir_default='${prefix}/include'
3512 libdir_default='${prefix}/lib'
3513 mandir_default='${prefix}/share/man'
3514
3515 # toolchain
3516 ar_default="ar"
3517 cc_default="gcc"
3518 cxx_default="g++"
3519 host_cc_default="gcc"
3520 doxygen_default="doxygen"
3521 install="install"
3522 ln_s_default="ln -s -f"
3523 nm_default="nm -g"
3524 pkg_config_default=pkg-config
3525 ranlib_default="ranlib"
3526 strip_default="strip"
3527 version_script='--version-script'
3528 objformat="elf32"
3529 x86asmexe_default="nasm"
3530 windres_default="windres"
3531 nvcc_default="nvcc"
3532 nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
3533 striptype="direct"
3534
3535 # OS
3536 target_os_default=$(tolower $(uname -s))
3537 host_os=$target_os_default
3538
3539 # machine
3540 if test "$target_os_default" = aix; then
3541     arch_default=$(uname -p)
3542     strip_default="strip -X32_64"
3543 else
3544     arch_default=$(uname -m)
3545 fi
3546 cpu="generic"
3547 intrinsics="none"
3548
3549 # configurable options
3550 enable $PROGRAM_LIST
3551 enable $DOCUMENT_LIST
3552 enable $EXAMPLE_LIST
3553 enable $(filter_out avresample $LIBRARY_LIST)
3554 enable stripping
3555
3556 enable asm
3557 enable debug
3558 enable doc
3559 enable faan faandct faanidct
3560 enable optimizations
3561 enable runtime_cpudetect
3562 enable safe_bitstream_reader
3563 enable static
3564 enable swscale_alpha
3565 enable valgrind_backtrace
3566
3567 sws_max_filter_size_default=256
3568 set_default sws_max_filter_size
3569
3570 # internal components are enabled by default
3571 enable $EXTRALIBS_LIST
3572
3573 # Avoid external, non-system, libraries getting enabled by dependency resolution
3574 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3575
3576 # build settings
3577 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3578 LIBPREF="lib"
3579 LIBSUF=".a"
3580 FULLNAME='$(NAME)$(BUILDSUF)'
3581 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3582 SLIBPREF="lib"
3583 SLIBSUF=".so"
3584 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3585 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3586 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3587 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3588 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3589 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3590 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3591
3592 asflags_filter=echo
3593 cflags_filter=echo
3594 ldflags_filter=echo
3595
3596 AS_C='-c'
3597 AS_O='-o $@'
3598 CC_C='-c'
3599 CC_E='-E -o $@'
3600 CC_O='-o $@'
3601 CXX_C='-c'
3602 CXX_O='-o $@'
3603 OBJCC_C='-c'
3604 OBJCC_E='-E -o $@'
3605 OBJCC_O='-o $@'
3606 X86ASM_O='-o $@'
3607 LD_O='-o $@'
3608 LD_LIB='-l%'
3609 LD_PATH='-L'
3610 HOSTCC_C='-c'
3611 HOSTCC_E='-E -o $@'
3612 HOSTCC_O='-o $@'
3613 HOSTLD_O='-o $@'
3614 NVCC_C='-c'
3615 NVCC_O='-o $@'
3616
3617 host_extralibs='-lm'
3618 host_cflags_filter=echo
3619 host_ldflags_filter=echo
3620
3621 target_path='$(CURDIR)'
3622
3623 # since the object filename is not given with the -MM flag, the compiler
3624 # is only able to print the basename, and we must add the path ourselves
3625 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3626 DEPFLAGS='-MM'
3627
3628 mkdir -p ffbuild
3629
3630 # find source path
3631 if test -f configure; then
3632     source_path=.
3633 else
3634     source_path=$(cd $(dirname "$0"); pwd)
3635     case "$source_path" in
3636         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3637     esac
3638     test -e "$source_path/config.h" &&
3639         die "Out of tree builds are impossible with config.h in source dir."
3640 fi
3641
3642 for v in "$@"; do
3643     r=${v#*=}
3644     l=${v%"$r"}
3645     r=$(sh_quote "$r")
3646     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3647 done
3648
3649 find_things_extern(){
3650     thing=$1
3651     pattern=$2
3652     file=$source_path/$3
3653     out=${4:-$thing}
3654     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$out/p" "$file"
3655 }
3656
3657 find_filters_extern(){
3658     file=$source_path/$1
3659     #sed -n "s/^extern AVFilter ff_\([avfsinkrc]\{2,5\}\)_\(\w\+\);/\2_filter/p" $file
3660     sed -E -n "s/^extern AVFilter ff_([avfsinkrc]{2,5})_([a-zA-Z0-9_]+);/\2_filter/p" $file
3661 }
3662
3663 FILTER_LIST=$(find_filters_extern libavfilter/allfilters.c)
3664 OUTDEV_LIST=$(find_things_extern muxer AVOutputFormat libavdevice/alldevices.c outdev)
3665 INDEV_LIST=$(find_things_extern demuxer AVInputFormat libavdevice/alldevices.c indev)
3666 MUXER_LIST=$(find_things_extern muxer AVOutputFormat libavformat/allformats.c)
3667 DEMUXER_LIST=$(find_things_extern demuxer AVInputFormat libavformat/allformats.c)
3668 ENCODER_LIST=$(find_things_extern encoder AVCodec libavcodec/allcodecs.c)
3669 DECODER_LIST=$(find_things_extern decoder AVCodec libavcodec/allcodecs.c)
3670 CODEC_LIST="
3671     $ENCODER_LIST
3672     $DECODER_LIST
3673 "
3674 PARSER_LIST=$(find_things_extern parser AVCodecParser libavcodec/parser.c)
3675 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3676 HWACCEL_LIST=$(find_things_extern hwaccel AVHWAccel libavcodec/hwaccels.h)
3677 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3678
3679 AVCODEC_COMPONENTS_LIST="
3680     $BSF_LIST
3681     $DECODER_LIST
3682     $ENCODER_LIST
3683     $HWACCEL_LIST
3684     $PARSER_LIST
3685 "
3686
3687 AVDEVICE_COMPONENTS_LIST="
3688     $INDEV_LIST
3689     $OUTDEV_LIST
3690 "
3691
3692 AVFILTER_COMPONENTS_LIST="
3693     $FILTER_LIST
3694 "
3695
3696 AVFORMAT_COMPONENTS_LIST="
3697     $DEMUXER_LIST
3698     $MUXER_LIST
3699     $PROTOCOL_LIST
3700 "
3701
3702 ALL_COMPONENTS="
3703     $AVCODEC_COMPONENTS_LIST
3704     $AVDEVICE_COMPONENTS_LIST
3705     $AVFILTER_COMPONENTS_LIST
3706     $AVFORMAT_COMPONENTS_LIST
3707 "
3708
3709 for n in $COMPONENT_LIST; do
3710     v=$(toupper ${n%s})_LIST
3711     eval enable \$$v
3712     eval ${n}_if_any="\$$v"
3713 done
3714
3715 enable $ARCH_EXT_LIST
3716
3717 die_unknown(){
3718     echo "Unknown option \"$1\"."
3719     echo "See $0 --help for available options."
3720     exit 1
3721 }
3722
3723 print_in_columns() {
3724     cols=$(expr $ncols / 24)
3725     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3726 }
3727
3728 show_list() {
3729     suffix=_$1
3730     shift
3731     echo $* | sed s/$suffix//g | print_in_columns
3732     exit 0
3733 }
3734
3735 rand_list(){
3736     IFS=', '
3737     set -- $*
3738     unset IFS
3739     for thing; do
3740         comp=${thing%:*}
3741         prob=${thing#$comp}
3742         prob=${prob#:}
3743         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3744         echo "prob ${prob:-0.5}"
3745         printf '%s\n' $comp
3746     done
3747 }
3748
3749 do_random(){
3750     action=$1
3751     shift
3752     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3753     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3754 }
3755
3756 for opt do
3757     optval="${opt#*=}"
3758     case "$opt" in
3759         --extra-ldflags=*)
3760             add_ldflags $optval
3761         ;;
3762         --extra-ldexeflags=*)
3763             add_ldexeflags $optval
3764         ;;
3765         --extra-ldsoflags=*)
3766             add_ldsoflags $optval
3767         ;;
3768         --extra-ldlibflags=*)
3769             warn "The --extra-ldlibflags option is only provided for compatibility and will be\n"\
3770                  "removed in the future. Use --extra-ldsoflags instead."
3771             add_ldsoflags $optval
3772         ;;
3773         --extra-libs=*)
3774             add_extralibs $optval
3775         ;;
3776         --disable-devices)
3777             disable $INDEV_LIST $OUTDEV_LIST
3778         ;;
3779         --enable-debug=*)
3780             debuglevel="$optval"
3781         ;;
3782         --disable-programs)
3783             disable $PROGRAM_LIST
3784         ;;
3785         --disable-everything)
3786             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3787         ;;
3788         --disable-all)
3789             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3790             disable $LIBRARY_LIST $PROGRAM_LIST doc
3791             enable avutil
3792         ;;
3793         --enable-random|--disable-random)
3794             action=${opt%%-random}
3795             do_random ${action#--} $COMPONENT_LIST
3796         ;;
3797         --enable-random=*|--disable-random=*)
3798             action=${opt%%-random=*}
3799             do_random ${action#--} $optval
3800         ;;
3801         --enable-sdl)
3802             enable sdl2
3803         ;;
3804         --enable-*=*|--disable-*=*)
3805             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3806             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3807             eval list=\$$(toupper $thing)_LIST
3808             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3809             list=$(filter "$name" $list)
3810             [ "$list" = "" ] && warn "Option $opt did not match anything"
3811             $action $list
3812         ;;
3813         --enable-yasm|--disable-yasm)
3814             warn "The ${opt} option is only provided for compatibility and will be\n"\
3815                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3816             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3817         ;;
3818         --yasmexe=*)
3819             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3820                  "removed in the future. Use --x86asmexe instead."
3821             x86asmexe="$optval"
3822         ;;
3823         --enable-?*|--disable-?*)
3824             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3825             if is_in $option $COMPONENT_LIST; then
3826                 test $action = disable && action=unset
3827                 eval $action \$$(toupper ${option%s})_LIST
3828             elif is_in $option $CMDLINE_SELECT; then
3829                 $action $option
3830             else
3831                 die_unknown $opt
3832             fi
3833         ;;
3834         --list-*)
3835             NAME="${opt#--list-}"
3836             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3837             NAME=${NAME%s}
3838             eval show_list $NAME \$$(toupper $NAME)_LIST
3839         ;;
3840         --help|-h) show_help
3841         ;;
3842         --quiet|-q) quiet=yes
3843         ;;
3844         --fatal-warnings) enable fatal_warnings
3845         ;;
3846         --libfuzzer=*)
3847             libfuzzer_path="$optval"
3848         ;;
3849         *)
3850             optname="${opt%%=*}"
3851             optname="${optname#--}"
3852             optname=$(echo "$optname" | sed 's/-/_/g')
3853             if is_in $optname $CMDLINE_SET; then
3854                 eval $optname='$optval'
3855             elif is_in $optname $CMDLINE_APPEND; then
3856                 append $optname "$optval"
3857             else
3858                 die_unknown $opt
3859             fi
3860         ;;
3861     esac
3862 done
3863
3864 for e in $env; do
3865     eval "export $e"
3866 done
3867
3868 if disabled autodetect; then
3869
3870     # Unless iconv is explicitely disabled by the user, we still want to probe
3871     # for the iconv from the libc.
3872     disabled iconv || enable libc_iconv
3873
3874     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3875     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3876 fi
3877 # Mark specifically enabled, but normally autodetected libraries as requested.
3878 for lib in $AUTODETECT_LIBS; do
3879     enabled $lib && request $lib
3880 done
3881 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
3882 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3883 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3884
3885 disabled logging && logfile=/dev/null
3886
3887 # command line configuration sanity checks
3888
3889 # we need to build at least one lib type
3890 if ! enabled_any static shared; then
3891     cat <<EOF
3892 At least one library type must be built.
3893 Specify --enable-static to build the static libraries or --enable-shared to
3894 build the shared libraries as well. To only build the shared libraries specify
3895 --disable-static in addition to --enable-shared.
3896 EOF
3897     exit 1
3898 fi
3899
3900 die_license_disabled() {
3901     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3902 }
3903
3904 die_license_disabled_gpl() {
3905     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3906 }
3907
3908 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3909 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3910
3911 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3912 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3913
3914 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3915
3916 if enabled nonfree; then
3917     license="nonfree and unredistributable"
3918 elif enabled gplv3; then
3919     license="GPL version 3 or later"
3920 elif enabled lgplv3; then
3921     license="LGPL version 3 or later"
3922 elif enabled gpl; then
3923     license="GPL version 2 or later"
3924 else
3925     license="LGPL version 2.1 or later"
3926 fi
3927
3928 enabled_all gnutls openssl &&
3929     die "GnuTLS and OpenSSL must not be enabled at the same time."
3930
3931 enabled_all gnutls mbedtls &&
3932     die "GnuTLS and mbedTLS must not be enabled at the same time."
3933
3934 enabled_all openssl mbedtls &&
3935     die "OpenSSL and mbedTLS must not be enabled at the same time."
3936
3937 # Disable all the library-specific components if the library itself
3938 # is disabled, see AVCODEC_LIST and following _LIST variables.
3939
3940 disable_components(){
3941     disabled ${1} && disable $(
3942         eval components="\$$(toupper ${1})_COMPONENTS"
3943         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3944     )
3945 }
3946
3947 map 'disable_components $v' $LIBRARY_LIST
3948
3949 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3950 set >> $logfile
3951
3952 test -n "$valgrind" && toolchain="valgrind-memcheck"
3953
3954 enabled ossfuzz && ! echo $CFLAGS | grep -q -- "-fsanitize="  &&{
3955     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
3956     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
3957 }
3958
3959 case "$toolchain" in
3960     *-asan)
3961         cc_default="${toolchain%-asan}"
3962         add_cflags  -fsanitize=address
3963         add_ldflags -fsanitize=address
3964     ;;
3965     *-msan)
3966         cc_default="${toolchain%-msan}"
3967         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3968         add_ldflags -fsanitize=memory
3969     ;;
3970     *-tsan)
3971         cc_default="${toolchain%-tsan}"
3972         add_cflags  -fsanitize=thread -fPIE
3973         add_ldflags -fsanitize=thread -pie
3974         case "$toolchain" in
3975             gcc-tsan)
3976                 add_cflags  -fPIC
3977                 add_ldflags -fPIC
3978                 ;;
3979         esac
3980     ;;
3981     *-usan)
3982         cc_default="${toolchain%-usan}"
3983         add_cflags  -fsanitize=undefined
3984         add_ldflags -fsanitize=undefined
3985     ;;
3986     valgrind-*)
3987         target_exec_default="valgrind"
3988         case "$toolchain" in
3989             valgrind-massif)
3990                 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"
3991                 ;;
3992             valgrind-memcheck)
3993                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3994                 ;;
3995         esac
3996     ;;
3997     msvc)
3998         # Check whether the current MSVC version needs the C99 converter.
3999         # From MSVC 2013 (compiler major version 18) onwards, it does actually
4000         # support enough of C99 to build ffmpeg. Default to the new
4001         # behaviour if the regexp was unable to match anything, since this
4002         # successfully parses the version number of existing supported
4003         # versions that require the converter (MSVC 2010 and 2012).
4004         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
4005         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
4006             cc_default="cl"
4007             cxx_default="cl"
4008         else
4009             die "Unsupported MSVC version (2013 or newer required)"
4010         fi
4011         ld_default="$source_path/compat/windows/mslink"
4012         nm_default="dumpbin -symbols"
4013         ar_default="lib"
4014         case "$arch" in
4015         aarch64|arm64)
4016             as_default="armasm64"
4017             ;;
4018         arm*)
4019             as_default="armasm"
4020             ;;
4021         esac
4022         target_os_default="win32"
4023         # Use a relative path for TMPDIR. This makes sure all the
4024         # ffconf temp files are written with a relative path, avoiding
4025         # issues with msys/win32 path conversion for MSVC parameters
4026         # such as -Fo<file> or -out:<file>.
4027         TMPDIR=.
4028     ;;
4029     icl)
4030         cc_default="icl"
4031         ld_default="xilink"
4032         nm_default="dumpbin -symbols"
4033         ar_default="xilib"
4034         target_os_default="win32"
4035         TMPDIR=.
4036     ;;
4037     gcov)
4038         add_cflags  -fprofile-arcs -ftest-coverage
4039         add_ldflags -fprofile-arcs -ftest-coverage
4040     ;;
4041     llvm-cov)
4042         add_cflags -fprofile-arcs -ftest-coverage
4043         add_ldflags --coverage
4044     ;;
4045     hardened)
4046         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
4047         add_cflags   -fno-strict-overflow -fstack-protector-all
4048         add_ldflags  -Wl,-z,relro -Wl,-z,now
4049         add_cflags   -fPIE
4050         add_ldexeflags -fPIE -pie
4051     ;;
4052     ?*)
4053         die "Unknown toolchain $toolchain"
4054     ;;
4055 esac
4056
4057 if test -n "$cross_prefix"; then
4058     test -n "$arch" && test -n "$target_os" ||
4059         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
4060     enable cross_compile
4061 fi
4062
4063 ar_default="${cross_prefix}${ar_default}"
4064 cc_default="${cross_prefix}${cc_default}"
4065 cxx_default="${cross_prefix}${cxx_default}"
4066 nm_default="${cross_prefix}${nm_default}"
4067 pkg_config_default="${cross_prefix}${pkg_config_default}"
4068 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
4069     ranlib_default="${cross_prefix}${ranlib_default} -D"
4070 else
4071     ranlib_default="${cross_prefix}${ranlib_default}"
4072 fi
4073 strip_default="${cross_prefix}${strip_default}"
4074 windres_default="${cross_prefix}${windres_default}"
4075
4076 sysinclude_default="${sysroot}/usr/include"
4077
4078 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
4079     target_exec target_os x86asmexe nvcc
4080 enabled cross_compile || host_cc_default=$cc
4081 set_default host_cc
4082
4083 pkg_config_fail_message=""
4084 if ! $pkg_config --version >/dev/null 2>&1; then
4085     warn "$pkg_config not found, library detection may fail."
4086     pkg_config=false
4087 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
4088     pkg_config_fail_message="
4089 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
4090 fi
4091
4092 if test $doxygen != $doxygen_default && \
4093   ! $doxygen --version >/dev/null 2>&1; then
4094     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
4095 fi
4096
4097 exesuf() {
4098     case $1 in
4099         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
4100     esac
4101 }
4102
4103 EXESUF=$(exesuf $target_os)
4104 HOSTEXESUF=$(exesuf $host_os)
4105
4106 # set temporary file name
4107 : ${TMPDIR:=$TEMPDIR}
4108 : ${TMPDIR:=$TMP}
4109 : ${TMPDIR:=/tmp}
4110
4111 if [ -n "$tempprefix" ] ; then
4112     mktemp(){
4113         tmpname="$tempprefix.${HOSTNAME}.${UID}"
4114         echo "$tmpname"
4115         mkdir "$tmpname"
4116     }
4117 elif ! test_cmd mktemp -u XXXXXX; then
4118     # simple replacement for missing mktemp
4119     # NOT SAFE FOR GENERAL USE
4120     mktemp(){
4121         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
4122         echo "$tmpname"
4123         mkdir "$tmpname"
4124     }
4125 fi
4126
4127 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
4128     die "Unable to create temporary directory in $TMPDIR."
4129
4130 tmpfile(){
4131     tmp="${FFTMPDIR}/test"$2
4132     (set -C; exec > $tmp) 2> /dev/null ||
4133         die "Unable to create temporary file in $FFTMPDIR."
4134     eval $1=$tmp
4135 }
4136
4137 trap 'rm -rf -- "$FFTMPDIR"' EXIT
4138 trap 'exit 2' INT
4139
4140 tmpfile TMPASM .asm
4141 tmpfile TMPC   .c
4142 tmpfile TMPCPP .cpp
4143 tmpfile TMPE   $EXESUF
4144 tmpfile TMPH   .h
4145 tmpfile TMPM   .m
4146 tmpfile TMPO   .o
4147 tmpfile TMPS   .S
4148 tmpfile TMPSH  .sh
4149 tmpfile TMPV   .ver
4150
4151 unset -f mktemp
4152
4153 chmod +x $TMPE
4154
4155 # make sure we can execute files in $TMPDIR
4156 cat > $TMPSH 2>> $logfile <<EOF
4157 #! /bin/sh
4158 EOF
4159 chmod +x $TMPSH >> $logfile 2>&1
4160 if ! $TMPSH >> $logfile 2>&1; then
4161     cat <<EOF
4162 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
4163 variable to another directory and make sure that it is not mounted noexec.
4164 EOF
4165     die "Sanity test failed."
4166 fi
4167
4168 armasm_flags(){
4169     for flag; do
4170         case $flag in
4171             # Filter out MSVC cl.exe options from cflags that shouldn't
4172             # be passed to gas-preprocessor
4173             -M[TD]*)                                            ;;
4174             *)                  echo $flag                      ;;
4175         esac
4176    done
4177 }
4178
4179 cparser_flags(){
4180     for flag; do
4181         case $flag in
4182             -Wno-switch)             echo -Wno-switch-enum ;;
4183             -Wno-format-zero-length) ;;
4184             -Wdisabled-optimization) ;;
4185             -Wno-pointer-sign)       echo -Wno-other ;;
4186             *)                       echo $flag ;;
4187         esac
4188     done
4189 }
4190
4191 msvc_common_flags(){
4192     for flag; do
4193         case $flag in
4194             # In addition to specifying certain flags under the compiler
4195             # specific filters, they must be specified here as well or else the
4196             # generic catch all at the bottom will print the original flag.
4197             -Wall)                ;;
4198             -Wextra)              ;;
4199             -std=c99)             ;;
4200             # Common flags
4201             -fomit-frame-pointer) ;;
4202             -g)                   echo -Z7 ;;
4203             -fno-math-errno)      ;;
4204             -fno-common)          ;;
4205             -fno-signed-zeros)    ;;
4206             -fPIC)                ;;
4207             -mthumb)              ;;
4208             -march=*)             ;;
4209             -lz)                  echo zlib.lib ;;
4210             -lx264)               echo libx264.lib ;;
4211             -lstdc++)             ;;
4212             -l*)                  echo ${flag#-l}.lib ;;
4213             -LARGEADDRESSAWARE)   echo $flag ;;
4214             -L*)                  echo -libpath:${flag#-L} ;;
4215             *)                    echo $flag ;;
4216         esac
4217     done
4218 }
4219
4220 msvc_flags(){
4221     msvc_common_flags "$@"
4222     for flag; do
4223         case $flag in
4224             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4225                                        -wd4554 ;;
4226             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4227                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4228                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4229                                        -wd4307 \
4230                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4231         esac
4232     done
4233 }
4234
4235 icl_flags(){
4236     msvc_common_flags "$@"
4237     for flag; do
4238         case $flag in
4239             # Despite what Intel's documentation says -Wall, which is supported
4240             # on Windows, does enable remarks so disable them here.
4241             -Wall)                echo $flag -Qdiag-disable:remark ;;
4242             -std=c99)             echo -Qstd=c99 ;;
4243             -flto)                echo -ipo ;;
4244         esac
4245     done
4246 }
4247
4248 icc_flags(){
4249     for flag; do
4250         case $flag in
4251             -flto)                echo -ipo ;;
4252             *)                    echo $flag ;;
4253         esac
4254     done
4255 }
4256
4257 suncc_flags(){
4258     for flag; do
4259         case $flag in
4260             -march=*|-mcpu=*)
4261                 case "${flag#*=}" in
4262                     native)                   echo -xtarget=native       ;;
4263                     v9|niagara)               echo -xarch=sparc          ;;
4264                     ultrasparc)               echo -xarch=sparcvis       ;;
4265                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4266                     i586|pentium)             echo -xchip=pentium        ;;
4267                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4268                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4269                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4270                     pentium4*)          echo -xtarget=pentium4           ;;
4271                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4272                     *-sse3)             echo -xarch=sse3                 ;;
4273                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4274                     bonnell)                   echo -xarch=ssse3         ;;
4275                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4276                     westmere)                  echo -xtarget=westmere    ;;
4277                     silvermont)                echo -xarch=sse4_2        ;;
4278                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4279                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4280                                                echo -xarch=avx           ;;
4281                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4282                     btver1)                    echo -xarch=amdsse4a      ;;
4283                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4284                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4285                     k8|opteron|athlon64|athlon-fx)
4286                                                echo -xarch=sse2a         ;;
4287                     athlon*)                   echo -xarch=pentium_proa  ;;
4288                 esac
4289                 ;;
4290             -std=c99)             echo -xc99              ;;
4291             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4292             -fPIC)                echo -KPIC -xcode=pic32 ;;
4293             -W*,*)                echo $flag              ;;
4294             -f*-*|-W*|-mimpure-text)                      ;;
4295             -shared)              echo -G                 ;;
4296             *)                    echo $flag              ;;
4297         esac
4298     done
4299 }
4300
4301 probe_cc(){
4302     pfx=$1
4303     _cc=$2
4304     first=$3
4305
4306     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4307     unset _ld_o _ldflags _ld_lib _ld_path
4308     unset _depflags _DEPCMD _DEPFLAGS
4309     _flags_filter=echo
4310
4311     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4312         true # no-op to avoid reading stdin in following checks
4313     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4314         _type=llvm_gcc
4315         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4316         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4317         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4318         _cflags_speed='-O3'
4319         _cflags_size='-Os'
4320     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4321         _type=gcc
4322         gcc_version=$($_cc --version | head -n1)
4323         gcc_basever=$($_cc -dumpversion)
4324         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4325         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4326         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4327         case $gcc_basever in
4328             2) ;;
4329             2.*) ;;
4330             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4331         esac
4332         if [ "$first" = true ]; then
4333             case $gcc_basever in
4334                 4.2*)
4335                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4336             esac
4337         fi
4338         _cflags_speed='-O3'
4339         _cflags_size='-Os'
4340     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4341         _type=icc
4342         _ident=$($_cc --version | head -n1)
4343         _depflags='-MMD'
4344         _cflags_speed='-O3'
4345         _cflags_size='-Os'
4346         _cflags_noopt='-O1'
4347         _flags_filter=icc_flags
4348     elif $_cc -v 2>&1 | grep -q xlc; then
4349         _type=xlc
4350         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4351         _cflags_speed='-O5'
4352         _cflags_size='-O5 -qcompact'
4353     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4354         test -d "$sysroot" || die "No valid sysroot specified."
4355         _type=armcc
4356         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4357         armcc_conf="$PWD/armcc.conf"
4358         $_cc --arm_linux_configure                 \
4359              --arm_linux_config_file="$armcc_conf" \
4360              --configure_sysroot="$sysroot"        \
4361              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4362              die "Error creating armcc configuration file."
4363         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4364         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4365         as_default="${cross_prefix}gcc"
4366         _depflags='-MMD'
4367         _cflags_speed='-O3'
4368         _cflags_size='-Os'
4369     elif $_cc -v 2>&1 | grep -q clang && ! $_cc -? > /dev/null 2>&1; then
4370         _type=clang
4371         _ident=$($_cc --version 2>/dev/null | head -n1)
4372         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4373         _cflags_speed='-O3'
4374         _cflags_size='-Oz'
4375     elif $_cc -V 2>&1 | grep -q Sun; then
4376         _type=suncc
4377         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4378         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4379         _DEPFLAGS='-xM1 -xc99'
4380         _ldflags='-std=c99'
4381         _cflags_speed='-O5'
4382         _cflags_size='-O5 -xspace'
4383         _flags_filter=suncc_flags
4384     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4385         _type=pathscale
4386         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4387         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4388         _cflags_speed='-O2'
4389         _cflags_size='-Os'
4390         _flags_filter='filter_out -Wdisabled-optimization'
4391     elif $_cc -v 2>&1 | grep -q Open64; then
4392         _type=open64
4393         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4394         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4395         _cflags_speed='-O2'
4396         _cflags_size='-Os'
4397         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4398     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4399         _type=armasm
4400         _ident=$($_cc | head -n1)
4401         # 4509: "This form of conditional instruction is deprecated"
4402         _flags="-nologo -ignore 4509"
4403         _flags_filter=armasm_flags
4404     elif $_cc 2>&1 | grep -q Intel; then
4405         _type=icl
4406         _ident=$($_cc 2>&1 | head -n1)
4407         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4408         # Not only is O3 broken on 13.x+ but it is slower on all previous
4409         # versions (tested) as well.
4410         _cflags_speed="-O2"
4411         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4412         if $_cc 2>&1 | grep -q Linker; then
4413             _ld_o='-out:$@'
4414         else
4415             _ld_o='-Fe$@'
4416         fi
4417         _cc_o='-Fo$@'
4418         _cc_e='-P'
4419         _flags_filter=icl_flags
4420         _ld_lib='lib%.a'
4421         _ld_path='-libpath:'
4422         # -Qdiag-error to make icl error when seeing certain unknown arguments
4423         _flags='-nologo -Qdiag-error:4044,10157'
4424         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4425         # with MSVC which enables it by default.
4426         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4427         disable stripping
4428     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4429         # lld can emulate multiple different linkers; in ms link.exe mode,
4430         # the -? parameter gives the help output which contains an identifyable
4431         # string, while it gives an error in other modes.
4432         _type=lld-link
4433         # The link.exe mode doesn't have a switch for getting the version,
4434         # but we can force it back to gnu mode and get the version from there.
4435         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4436         _ld_o='-out:$@'
4437         _flags_filter=msvc_flags
4438         _ld_lib='lib%.a'
4439         _ld_path='-libpath:'
4440     elif $_cc -nologo- 2>&1 | grep -q Microsoft || { $_cc -v 2>&1 | grep -q clang && $_cc -? > /dev/null 2>&1; }; then
4441         _type=msvc
4442         _ident=$($_cc 2>&1 | head -n1 | tr -d '\r')
4443         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4444         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4445         _cflags_speed="-O2"
4446         _cflags_size="-O1"
4447         _cflags_noopt="-O1"
4448         if $_cc -nologo- 2>&1 | grep -q Linker; then
4449             _ld_o='-out:$@'
4450         else
4451             _ld_o='-Fe$@'
4452         fi
4453         _cc_o='-Fo$@'
4454         _cc_e='-P -Fi$@'
4455         _flags_filter=msvc_flags
4456         _ld_lib='lib%.a'
4457         _ld_path='-libpath:'
4458         _flags='-nologo'
4459         disable stripping
4460     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4461         _type=cparser
4462         _ident=$($_cc --version | head -n1)
4463         _depflags='-MMD'
4464         _cflags_speed='-O4'
4465         _cflags_size='-O2'
4466         _flags_filter=cparser_flags
4467     fi
4468
4469     eval ${pfx}_type=\$_type
4470     eval ${pfx}_ident=\$_ident
4471 }
4472
4473 set_ccvars(){
4474     eval ${1}_C=\${_cc_c-\${${1}_C}}
4475     eval ${1}_E=\${_cc_e-\${${1}_E}}
4476     eval ${1}_O=\${_cc_o-\${${1}_O}}
4477
4478     if [ -n "$_depflags" ]; then
4479         eval ${1}_DEPFLAGS=\$_depflags
4480     else
4481         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4482         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4483         eval DEP${1}FLAGS=\$_flags
4484     fi
4485 }
4486
4487 probe_cc cc "$cc" "true"
4488 cflags_filter=$_flags_filter
4489 cflags_speed=$_cflags_speed
4490 cflags_size=$_cflags_size
4491 cflags_noopt=$_cflags_noopt
4492 add_cflags $_flags $_cflags
4493 cc_ldflags=$_ldflags
4494 set_ccvars CC
4495 set_ccvars CXX
4496
4497 probe_cc hostcc "$host_cc"
4498 host_cflags_filter=$_flags_filter
4499 host_cflags_speed=$_cflags_speed
4500 add_host_cflags  $_flags $_cflags
4501 set_ccvars HOSTCC
4502
4503 test -n "$cc_type" && enable $cc_type ||
4504     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4505
4506 : ${as_default:=$cc}
4507 : ${objcc_default:=$cc}
4508 : ${dep_cc_default:=$cc}
4509 : ${ld_default:=$cc}
4510 : ${host_ld_default:=$host_cc}
4511 set_default ar as objcc dep_cc ld ln_s host_ld windres
4512
4513 probe_cc as "$as"
4514 asflags_filter=$_flags_filter
4515 add_asflags $_flags $_cflags
4516 set_ccvars AS
4517
4518 probe_cc objcc "$objcc"
4519 objcflags_filter=$_flags_filter
4520 add_objcflags $_flags $_cflags
4521 set_ccvars OBJC
4522
4523 probe_cc ld "$ld"
4524 ldflags_filter=$_flags_filter
4525 add_ldflags $_flags $_ldflags
4526 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4527 LD_O=${_ld_o-$LD_O}
4528 LD_LIB=${_ld_lib-$LD_LIB}
4529 LD_PATH=${_ld_path-$LD_PATH}
4530
4531 probe_cc hostld "$host_ld"
4532 host_ldflags_filter=$_flags_filter
4533 add_host_ldflags $_flags $_ldflags
4534 HOSTLD_O=${_ld_o-$HOSTLD_O}
4535
4536 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4537     probe_cc depcc "$dep_cc"
4538     CCDEP=${_DEPCMD:-$DEPCMD}
4539     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4540     DEPCCFLAGS=$_flags
4541 fi
4542
4543 if $ar 2>&1 | grep -q Microsoft; then
4544     arflags="-nologo"
4545     ar_o='-out:$@'
4546 elif $ar 2>&1 | grep -q "\[D\] "; then
4547     arflags="rcD"
4548     ar_o='$@'
4549 else
4550     arflags="rc"
4551     ar_o='$@'
4552 fi
4553
4554 add_cflags $extra_cflags
4555 add_cxxflags $extra_cxxflags
4556 add_objcflags $extra_objcflags
4557 add_asflags $extra_cflags
4558
4559 if test -n "$sysroot"; then
4560     case "$cc_type" in
4561         gcc|llvm_gcc|clang)
4562             add_cppflags --sysroot="$sysroot"
4563             add_ldflags --sysroot="$sysroot"
4564         ;;
4565     esac
4566 fi
4567
4568 if test "$cpu" = host; then
4569     enabled cross_compile &&
4570         die "--cpu=host makes no sense when cross-compiling."
4571
4572     case "$cc_type" in
4573         gcc|llvm_gcc)
4574             check_native(){
4575                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4576                 sed -n "/cc1.*$1=/{
4577                             s/.*$1=\\([^ ]*\\).*/\\1/
4578                             p
4579                             q
4580                         }" $TMPE
4581             }
4582             cpu=$(check_native -march || check_native -mcpu)
4583         ;;
4584         clang)
4585             check_native(){
4586                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4587                 sed -n "/cc1.*-target-cpu /{
4588                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4589                             p
4590                             q
4591                         }" $TMPE
4592             }
4593             cpu=$(check_native -march)
4594         ;;
4595     esac
4596
4597     test "${cpu:-host}" = host &&
4598         die "--cpu=host not supported with compiler $cc"
4599 fi
4600
4601 # Deal with common $arch aliases
4602 case "$arch" in
4603     aarch64|arm64)
4604         arch="aarch64"
4605     ;;
4606     arm*|iPad*|iPhone*)
4607         arch="arm"
4608     ;;
4609     mips*|IP*)
4610         case "$arch" in
4611         *el)
4612             add_cppflags -EL
4613             add_ldflags -EL
4614         ;;
4615         *eb)
4616             add_cppflags -EB
4617             add_ldflags -EB
4618         ;;
4619         esac
4620         arch="mips"
4621     ;;
4622     parisc*|hppa*)
4623         arch="parisc"
4624     ;;
4625     "Power Macintosh"|ppc*|powerpc*)
4626         arch="ppc"
4627     ;;
4628     s390|s390x)
4629         arch="s390"
4630     ;;
4631     sh4|sh)
4632         arch="sh4"
4633     ;;
4634     sun4*|sparc*)
4635         arch="sparc"
4636     ;;
4637     tilegx|tile-gx)
4638         arch="tilegx"
4639     ;;
4640     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4641         arch="x86"
4642     ;;
4643 esac
4644
4645 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4646 enable $arch
4647
4648 # Add processor-specific flags
4649 if enabled aarch64; then
4650
4651     case $cpu in
4652         armv*)
4653             cpuflags="-march=$cpu"
4654         ;;
4655         *)
4656             cpuflags="-mcpu=$cpu"
4657         ;;
4658     esac
4659
4660 elif enabled alpha; then
4661
4662     cpuflags="-mcpu=$cpu"
4663
4664 elif enabled arm; then
4665
4666     check_arm_arch() {
4667         test_cpp_condition stddef.h \
4668             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4669             $cpuflags
4670     }
4671
4672     probe_arm_arch() {
4673         if   check_arm_arch 4;        then echo armv4
4674         elif check_arm_arch 4T;       then echo armv4t
4675         elif check_arm_arch 5;        then echo armv5
4676         elif check_arm_arch 5E;       then echo armv5e
4677         elif check_arm_arch 5T;       then echo armv5t
4678         elif check_arm_arch 5TE;      then echo armv5te
4679         elif check_arm_arch 5TEJ;     then echo armv5te
4680         elif check_arm_arch 6;        then echo armv6
4681         elif check_arm_arch 6J;       then echo armv6j
4682         elif check_arm_arch 6K;       then echo armv6k
4683         elif check_arm_arch 6Z;       then echo armv6z
4684         elif check_arm_arch 6KZ;      then echo armv6zk
4685         elif check_arm_arch 6ZK;      then echo armv6zk
4686         elif check_arm_arch 6T2;      then echo armv6t2
4687         elif check_arm_arch 7;        then echo armv7
4688         elif check_arm_arch 7A  7_A;  then echo armv7-a
4689         elif check_arm_arch 7S;       then echo armv7-a
4690         elif check_arm_arch 7R  7_R;  then echo armv7-r
4691         elif check_arm_arch 7M  7_M;  then echo armv7-m
4692         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4693         elif check_arm_arch 8A  8_A;  then echo armv8-a
4694         fi
4695     }
4696
4697     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4698
4699     case $cpu in
4700         armv*)
4701             cpuflags="-march=$cpu"
4702             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4703         ;;
4704         *)
4705             cpuflags="-mcpu=$cpu"
4706             case $cpu in
4707                 cortex-a*)                               subarch=armv7a  ;;
4708                 cortex-r*)                               subarch=armv7r  ;;
4709                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4710                 arm11*)                                  subarch=armv6   ;;
4711                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4712                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4713                 *)                             subarch=$(probe_arm_arch) ;;
4714             esac
4715         ;;
4716     esac
4717
4718     case "$subarch" in
4719         armv5t*)    enable fast_clz                ;;
4720         armv[6-8]*)
4721             enable fast_clz
4722             disabled fast_unaligned || enable fast_unaligned
4723             ;;
4724     esac
4725
4726 elif enabled avr32; then
4727
4728     case $cpu in
4729         ap7[02]0[0-2])
4730             subarch="avr32_ap"
4731             cpuflags="-mpart=$cpu"
4732         ;;
4733         ap)
4734             subarch="avr32_ap"
4735             cpuflags="-march=$cpu"
4736         ;;
4737         uc3[ab]*)
4738             subarch="avr32_uc"
4739             cpuflags="-mcpu=$cpu"
4740         ;;
4741         uc)
4742             subarch="avr32_uc"
4743             cpuflags="-march=$cpu"
4744         ;;
4745     esac
4746
4747 elif enabled bfin; then
4748
4749     cpuflags="-mcpu=$cpu"
4750
4751 elif enabled mips; then
4752
4753     cpuflags="-march=$cpu"
4754
4755     if [ "$cpu" != "generic" ]; then
4756         disable mips32r2
4757         disable mips32r5
4758         disable mips64r2
4759         disable mips32r6
4760         disable mips64r6
4761         disable loongson2
4762         disable loongson3
4763
4764         case $cpu in
4765             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4766                 enable mips32r2
4767                 disable msa
4768             ;;
4769             p5600|i6400|p6600)
4770                 disable mipsdsp
4771                 disable mipsdspr2
4772             ;;
4773             loongson*)
4774                 enable loongson2
4775                 enable loongson3
4776                 enable local_aligned
4777                 enable simd_align_16
4778                 enable fast_64bit
4779                 enable fast_clz
4780                 enable fast_cmov
4781                 enable fast_unaligned
4782                 disable aligned_stack
4783                 disable mipsfpu
4784                 disable mipsdsp
4785                 disable mipsdspr2
4786                 case $cpu in
4787                     loongson3*)
4788                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4789                     ;;
4790                     loongson2e)
4791                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4792                     ;;
4793                     loongson2f)
4794                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4795                     ;;
4796                 esac
4797             ;;
4798             *)
4799                 # Unknown CPU. Disable everything.
4800                 warn "unknown CPU. Disabling all MIPS optimizations."
4801                 disable mipsfpu
4802                 disable mipsdsp
4803                 disable mipsdspr2
4804                 disable msa
4805                 disable mmi
4806             ;;
4807         esac
4808
4809         case $cpu in
4810             24kc)
4811                 disable mipsfpu
4812                 disable mipsdsp
4813                 disable mipsdspr2
4814             ;;
4815             24kf*)
4816                 disable mipsdsp
4817                 disable mipsdspr2
4818             ;;
4819             24kec|34kc|1004kc)
4820                 disable mipsfpu
4821                 disable mipsdspr2
4822             ;;
4823             24kef*|34kf*|1004kf*)
4824                 disable mipsdspr2
4825             ;;
4826             74kc)
4827                 disable mipsfpu
4828             ;;
4829             p5600)
4830                 enable mips32r5
4831                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4832             ;;
4833             i6400)
4834                 enable mips64r6
4835                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4836             ;;
4837             p6600)
4838                 enable mips64r6
4839                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4840             ;;
4841         esac
4842     else
4843         # We do not disable anything. Is up to the user to disable the unwanted features.
4844         warn 'generic cpu selected'
4845     fi
4846
4847 elif enabled ppc; then
4848
4849     disable ldbrx
4850
4851     case $(tolower $cpu) in
4852         601|ppc601|powerpc601)
4853             cpuflags="-mcpu=601"
4854             disable altivec
4855         ;;
4856         603*|ppc603*|powerpc603*)
4857             cpuflags="-mcpu=603"
4858             disable altivec
4859         ;;
4860         604*|ppc604*|powerpc604*)
4861             cpuflags="-mcpu=604"
4862             disable altivec
4863         ;;
4864         g3|75*|ppc75*|powerpc75*)
4865             cpuflags="-mcpu=750"
4866             disable altivec
4867         ;;
4868         g4|745*|ppc745*|powerpc745*)
4869             cpuflags="-mcpu=7450"
4870             disable vsx
4871         ;;
4872         74*|ppc74*|powerpc74*)
4873             cpuflags="-mcpu=7400"
4874             disable vsx
4875         ;;
4876         g5|970|ppc970|powerpc970)
4877             cpuflags="-mcpu=970"
4878             disable vsx
4879         ;;
4880         power[3-6]*)
4881             cpuflags="-mcpu=$cpu"
4882             disable vsx
4883         ;;
4884         power[7-8]*)
4885             cpuflags="-mcpu=$cpu"
4886         ;;
4887         cell)
4888             cpuflags="-mcpu=cell"
4889             enable ldbrx
4890             disable vsx
4891         ;;
4892         e500mc)
4893             cpuflags="-mcpu=e500mc"
4894             disable altivec
4895         ;;
4896         e500v2)
4897             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4898             disable altivec
4899             disable dcbzl
4900         ;;
4901         e500)
4902             cpuflags="-mcpu=8540 -mhard-float"
4903             disable altivec
4904             disable dcbzl
4905         ;;
4906     esac
4907
4908 elif enabled sparc; then
4909
4910     case $cpu in
4911         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4912             cpuflags="-mcpu=$cpu"
4913         ;;
4914         ultrasparc*|niagara[234])
4915             cpuflags="-mcpu=$cpu"
4916         ;;
4917     esac
4918
4919 elif enabled x86; then
4920
4921     case $cpu in
4922         i[345]86|pentium)
4923             cpuflags="-march=$cpu"
4924             disable i686
4925             disable mmx
4926         ;;
4927         # targets that do NOT support nopl and conditional mov (cmov)
4928         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4929             cpuflags="-march=$cpu"
4930             disable i686
4931         ;;
4932         # targets that do support nopl and conditional mov (cmov)
4933         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4934         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4935         |amdfam10|barcelona|b[dt]ver*|znver*)
4936             cpuflags="-march=$cpu"
4937             enable i686
4938             enable fast_cmov
4939         ;;
4940         # targets that do support conditional mov but on which it's slow
4941         pentium4|pentium4m|prescott|nocona)
4942             cpuflags="-march=$cpu"
4943             enable i686
4944             disable fast_cmov
4945         ;;
4946     esac
4947
4948 fi
4949
4950 if [ "$cpu" != generic ]; then
4951     add_cflags  $cpuflags
4952     add_asflags $cpuflags
4953     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4954 fi
4955
4956 # compiler sanity check
4957 test_exec <<EOF
4958 int main(void){ return 0; }
4959 EOF
4960 if test "$?" != 0; then
4961     echo "$cc is unable to create an executable file."
4962     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4963         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4964         echo "Only do this if you know what cross compiling means."
4965     fi
4966     die "C compiler test failed."
4967 fi
4968
4969 add_cppflags -D_ISOC99_SOURCE
4970 add_cxxflags -D__STDC_CONSTANT_MACROS
4971 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
4972
4973 # some compilers silently accept -std=c11, so we also need to check that the
4974 # version macro is defined properly
4975 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
4976     add_cflags -std=c11 ||
4977     check_cflags -std=c99
4978
4979 check_cppflags -D_FILE_OFFSET_BITS=64
4980 check_cppflags -D_LARGEFILE_SOURCE
4981
4982 add_host_cppflags -D_ISOC99_SOURCE
4983 check_host_cflags -std=c99
4984 check_host_cflags -Wall
4985 check_host_cflags $host_cflags_speed
4986
4987 check_64bit(){
4988     arch32=$1
4989     arch64=$2
4990     expr=${3:-'sizeof(void *) > 4'}
4991     test_code cc "" "int test[2*($expr) - 1]" &&
4992         subarch=$arch64 || subarch=$arch32
4993     enable $subarch
4994 }
4995
4996 case "$arch" in
4997     aarch64|alpha|ia64)
4998         enabled shared && enable_weak pic
4999     ;;
5000     mips)
5001         check_64bit mips mips64 '_MIPS_SIM > 1'
5002         enabled shared && enable_weak pic
5003     ;;
5004     parisc)
5005         check_64bit parisc parisc64
5006         enabled shared && enable_weak pic
5007     ;;
5008     ppc)
5009         check_64bit ppc ppc64
5010         enabled shared && enable_weak pic
5011     ;;
5012     s390)
5013         check_64bit s390 s390x
5014         enabled shared && enable_weak pic
5015     ;;
5016     sparc)
5017         check_64bit sparc sparc64
5018         enabled shared && enable_weak pic
5019     ;;
5020     x86)
5021         check_64bit x86_32 x86_64
5022         # Treat x32 as x64 for now. Note it also needs pic if shared
5023         test "$subarch" = "x86_32" && test_cpp_condition stddef.h 'defined(__x86_64__)' &&
5024             subarch=x86_64 && enable x86_64 && disable x86_32
5025         if enabled x86_64; then
5026             enabled shared && enable_weak pic
5027             objformat=elf64
5028         fi
5029     ;;
5030 esac
5031
5032 # OS specific
5033 case $target_os in
5034     aix)
5035         SHFLAGS=-shared
5036         add_cppflags '-I\$(SRC_PATH)/compat/aix'
5037         enabled shared && add_ldflags -Wl,-brtl
5038         arflags='-Xany -r -c'
5039         striptype=""
5040         ;;
5041     android)
5042         disable symver
5043         enable section_data_rel_ro
5044         SLIB_INSTALL_NAME='$(SLIBNAME)'
5045         SLIB_INSTALL_LINKS=
5046         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
5047         ;;
5048     haiku)
5049         prefix_default="/boot/common"
5050         network_extralibs="-lnetwork"
5051         host_extralibs=
5052         ;;
5053     sunos)
5054         SHFLAGS='-shared -Wl,-h,$$(@F)'
5055         enabled x86 && append SHFLAGS -mimpure-text
5056         network_extralibs="-lsocket -lnsl"
5057         add_cppflags -D__EXTENSIONS__
5058         # When using suncc to build, the Solaris linker will mark
5059         # an executable with each instruction set encountered by
5060         # the Solaris assembler.  As our libraries contain their own
5061         # guards for processor-specific code, instead suppress
5062         # generation of the HWCAPS ELF section on Solaris x86 only.
5063         enabled_all suncc x86 &&
5064             echo "hwcap_1 = OVERRIDE;" > mapfile &&
5065             add_ldflags -Wl,-M,mapfile
5066         nm_default='nm -P -g'
5067         version_script='-M'
5068         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
5069         ;;
5070     netbsd)
5071         disable symver
5072         oss_indev_extralibs="-lossaudio"
5073         oss_outdev_extralibs="-lossaudio"
5074         enabled gcc || check_ldflags -Wl,-zmuldefs
5075         ;;
5076     openbsd|bitrig)
5077         disable symver
5078         striptype=""
5079         SHFLAGS='-shared'
5080         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
5081         SLIB_INSTALL_LINKS=
5082         oss_indev_extralibs="-lossaudio"
5083         oss_outdev_extralibs="-lossaudio"
5084         ;;
5085     dragonfly)
5086         disable symver
5087         ;;
5088     freebsd)
5089         ;;
5090     bsd/os)
5091         add_extralibs -lpoll -lgnugetopt
5092         strip="strip -d"
5093         ;;
5094     darwin)
5095         enabled ppc && add_asflags -force_cpusubtype_ALL
5096         install_name_dir_default='$(SHLIBDIR)'
5097         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
5098         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
5099         strip="${strip} -x"
5100         add_ldflags -Wl,-dynamic,-search_paths_first
5101         check_cflags -Werror=partial-availability
5102         SLIBSUF=".dylib"
5103         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
5104         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
5105         enabled x86_64 && objformat="macho64" || objformat="macho32"
5106         enabled_any pic shared x86_64 ||
5107             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
5108         check_header dispatch/dispatch.h &&
5109             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
5110         if test -n "$sysroot"; then
5111             is_in -isysroot $cc $CPPFLAGS $CFLAGS || check_cppflags -isysroot $sysroot
5112             is_in -isysroot $ld $LDFLAGS          || check_ldflags  -isysroot $sysroot
5113         fi
5114         version_script='-exported_symbols_list'
5115         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
5116         ;;
5117     msys*)
5118         die "Native MSYS builds are discouraged, please use the MINGW environment."
5119         ;;
5120     mingw32*|mingw64*)
5121         target_os=mingw32
5122         LIBTARGET=i386
5123         if enabled x86_64; then
5124             LIBTARGET="i386:x86-64"
5125         elif enabled arm; then
5126             LIBTARGET="arm"
5127         elif enabled aarch64; then
5128             LIBTARGET="arm64"
5129         fi
5130         if enabled shared; then
5131             # Cannot build both shared and static libs when using dllimport.
5132             disable static
5133         fi
5134         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5135         enabled x86_32 && check_ldflags -Wl,--large-address-aware
5136         shlibdir_default="$bindir_default"
5137         SLIBPREF=""
5138         SLIBSUF=".dll"
5139         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5140         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5141         if test_cmd lib.exe -list; then
5142             SLIB_EXTRA_CMD=-'lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5143             if enabled x86_64; then
5144                 LIBTARGET=x64
5145             fi
5146         else
5147             SLIB_EXTRA_CMD=-'$(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
5148         fi
5149         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5150         SLIB_INSTALL_LINKS=
5151         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5152         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5153         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" AR="$(AR_CMD)" NM="$(NM_CMD)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5154         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--disable-auto-image-base $$(@:$(SLIBSUF)=.def)'
5155         enabled x86_64 && objformat="win64" || objformat="win32"
5156         dlltool="${cross_prefix}dlltool"
5157         ranlib=:
5158         enable dos_paths
5159         check_ldflags -Wl,--nxcompat,--dynamicbase
5160         # Lets work around some stupidity in binutils.
5161         # ld will strip relocations from executables even though we need them
5162         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
5163         # however ld then forgets what the entry point should be (oops) so we
5164         # have to manually (re)set it.
5165         if enabled x86_32; then
5166             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
5167         elif enabled x86_64; then
5168             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
5169             check_ldflags -Wl,--high-entropy-va # binutils 2.25
5170             # Set image base >4GB for extra entropy with HEASLR
5171             add_ldexeflags -Wl,--image-base,0x140000000
5172             append SHFLAGS -Wl,--image-base,0x180000000
5173         fi
5174         ;;
5175     win32|win64)
5176         disable symver
5177         if enabled shared; then
5178             # Link to the import library instead of the normal static library
5179             # for shared libs.
5180             LD_LIB='%.lib'
5181             # Cannot build both shared and static libs with MSVC or icl.
5182             disable static
5183         fi
5184         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
5185         shlibdir_default="$bindir_default"
5186         SLIBPREF=""
5187         SLIBSUF=".dll"
5188         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5189         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5190         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5191         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5192         SLIB_INSTALL_LINKS=
5193         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5194         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5195         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5196         enabled x86_64 && objformat="win64" || objformat="win32"
5197         ranlib=:
5198         enable dos_paths
5199         ;;
5200     cygwin*)
5201         target_os=cygwin
5202         shlibdir_default="$bindir_default"
5203         SLIBPREF="cyg"
5204         SLIBSUF=".dll"
5205         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5206         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5207         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5208         SLIB_INSTALL_LINKS=
5209         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
5210         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
5211         enabled x86_64 && objformat="win64" || objformat="win32"
5212         enable dos_paths
5213         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5214         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5215         ;;
5216     *-dos|freedos|opendos)
5217         network_extralibs="-lsocket"
5218         objformat="coff"
5219         enable dos_paths
5220         add_cppflags -U__STRICT_ANSI__
5221         ;;
5222     linux)
5223         enable section_data_rel_ro
5224         enabled_any arm aarch64 && enable_weak linux_perf
5225         ;;
5226     irix*)
5227         target_os=irix
5228         ranlib="echo ignoring ranlib"
5229         ;;
5230     os/2*)
5231         strip="lxlite -CS"
5232         striptype=""
5233         objformat="aout"
5234         add_cppflags -D_GNU_SOURCE
5235         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
5236         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
5237         LIBSUF="_s.a"
5238         SLIBPREF=""
5239         SLIBSUF=".dll"
5240         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5241         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
5242         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
5243             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
5244             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
5245             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
5246             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
5247         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
5248             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
5249         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5250         SLIB_INSTALL_LINKS=
5251         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
5252         enable dos_paths
5253         enable_weak os2threads
5254         ;;
5255     gnu/kfreebsd)
5256         add_cppflags -D_BSD_SOURCE
5257         ;;
5258     gnu)
5259         ;;
5260     qnx)
5261         add_cppflags -D_QNX_SOURCE
5262         network_extralibs="-lsocket"
5263         ;;
5264     symbian)
5265         SLIBSUF=".dll"
5266         enable dos_paths
5267         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
5268         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
5269         add_ldflags -Wl,--target1-abs,--no-undefined \
5270                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
5271                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
5272         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
5273                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
5274                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
5275         ;;
5276     minix)
5277         ;;
5278     none)
5279         ;;
5280     *)
5281         die "Unknown OS '$target_os'."
5282         ;;
5283 esac
5284
5285 # test if creating links works
5286 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5287 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5288 mkdir "$link_dest"
5289 $ln_s "$link_dest" "$link_name"
5290 touch "$link_dest/test_file"
5291 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5292     # create link to source path
5293     [ -e src ] && rm src
5294     $ln_s "$source_path" src
5295     source_link=src
5296 else
5297     # creating directory links doesn't work
5298     # fall back to using the full source path
5299     source_link="$source_path"
5300 fi
5301 # cleanup
5302 rm -r "$link_dest"
5303 rm -r "$link_name"
5304
5305 # determine libc flavour
5306
5307 probe_libc(){
5308     pfx=$1
5309     pfx_no_=${pfx%_}
5310     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5311     if test_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5312         eval ${pfx}libc_type=uclibc
5313         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5314     elif test_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5315         eval ${pfx}libc_type=glibc
5316         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5317     # MinGW headers can be installed on Cygwin, so check for newlib first.
5318     elif test_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5319         eval ${pfx}libc_type=newlib
5320         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
5321     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5322     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5323         eval ${pfx}libc_type=mingw64
5324         if test_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5325             add_compat msvcrt/snprintf.o
5326             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5327         fi
5328         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5329         eval test \$${pfx_no_}cc_type = "gcc" &&
5330             add_${pfx}cppflags -D__printf__=__gnu_printf__
5331         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5332             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5333     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5334          test_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5335         eval ${pfx}libc_type=mingw32
5336         test_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5337             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5338             die "ERROR: MinGW32 runtime version must be >= 3.15."
5339         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5340         test_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
5341             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5342         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5343             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5344         eval test \$${pfx_no_}cc_type = "gcc" &&
5345             add_${pfx}cppflags -D__printf__=__gnu_printf__
5346     elif test_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5347         eval ${pfx}libc_type=msvcrt
5348         if test_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5349             if [ "$pfx" = host_ ]; then
5350                 add_host_cppflags -Dsnprintf=_snprintf
5351             else
5352                 add_compat strtod.o strtod=avpriv_strtod
5353                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5354                                              _snprintf=avpriv_snprintf  \
5355                                              vsnprintf=avpriv_vsnprintf
5356             fi
5357         fi
5358         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5359         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5360         # 0x601 by default unless something else is set by the user.
5361         # This can easily lead to us detecting functions only present
5362         # in such new versions and producing binaries requiring windows 7.0.
5363         # Therefore explicitly set the default to Vista unless the user has
5364         # set something else on the command line.
5365         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5366         # family. For these cases, configure is free to use any functions
5367         # found in the SDK headers by default. (Alternatively, we could force
5368         # _WIN32_WINNT to 0x0602 in that case.)
5369         test_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5370             { test_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0600; }
5371 #ifdef WINAPI_FAMILY
5372 #include <winapifamily.h>
5373 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5374 #error not desktop
5375 #endif
5376 #endif
5377 EOF
5378         if [ "$pfx" = "" ]; then
5379             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5380             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5381         fi
5382     elif test_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5383         eval ${pfx}libc_type=klibc
5384     elif test_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5385         eval ${pfx}libc_type=bionic
5386     elif test_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5387         eval ${pfx}libc_type=solaris
5388         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5389     fi
5390     test_${pfx}cc <<EOF
5391 #include <time.h>
5392 void *v = localtime_r;
5393 EOF
5394 test "$?" != 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
5395 #include <time.h>
5396 void *v = localtime_r;
5397 EOF
5398
5399     eval test -n "\${${pfx}libc_type}" && enable ${pfx}libc_${libc_type}
5400 }
5401
5402 probe_libc
5403 probe_libc host_
5404
5405 # hacks for compiler/libc/os combinations
5406
5407 case $libc_type in
5408     bionic)
5409         add_compat strtod.o strtod=avpriv_strtod
5410         ;;
5411 esac
5412
5413 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5414     add_cppflags '-I\$(SRC_PATH)/compat/float'
5415
5416 test_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5417
5418 set_default libdir
5419 : ${shlibdir_default:="$libdir"}
5420 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5421
5422 set_default $PATHS_LIST
5423 set_default nm
5424
5425 disabled optimizations || enabled ossfuzz || check_cflags -fomit-frame-pointer
5426
5427 enable_weak_pic() {
5428     disabled pic && return
5429     enable pic
5430     add_cppflags -DPIC
5431     case "$target_os" in
5432     mingw*|cygwin*|win*)
5433         ;;
5434     *)
5435         add_cflags -fPIC
5436         add_asflags -fPIC
5437         ;;
5438     esac
5439 }
5440
5441 enabled pic && enable_weak_pic
5442
5443 test_cc <<EOF || die "Symbol mangling check failed."
5444 int ff_extern;
5445 EOF
5446 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5447 extern_prefix=${sym%%ff_extern*}
5448
5449 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
5450
5451 for restrict_keyword in restrict __restrict__ __restrict ""; do
5452     test_code cc "" "char * $restrict_keyword p" && break
5453 done
5454
5455 check_cc pragma_deprecated "" '_Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"")'
5456
5457 # The global variable ensures the bits appear unchanged in the object file.
5458 test_cc <<EOF || die "endian test failed"
5459 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5460 EOF
5461 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5462
5463 check_cc const_nan math.h "struct { double d; } static const bar[] = { { NAN } }"
5464
5465 if ! enabled ppc64 || enabled bigendian; then
5466     disable vsx
5467 fi
5468
5469 check_gas() {
5470     log "check_gas using '$as' as AS"
5471     # :vararg is used on aarch64, arm and ppc altivec
5472     check_as vararg "
5473 .macro m n, y:vararg=0
5474 \n: .int \y
5475 .endm
5476 m x" || return 1
5477     # .altmacro is only used in arm asm
5478     ! enabled arm || check_as gnu_as ".altmacro"
5479 }
5480
5481 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5482     nogas=:
5483     enabled_any arm aarch64 && nogas=die
5484     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5485     as_noop=-v
5486
5487     case $as_type in
5488         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5489         gcc)  gaspp_as_type=gas ;;
5490         *)    gaspp_as_type=$as_type ;;
5491     esac
5492
5493     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5494
5495     test "${as#*gas-preprocessor.pl}" != "$as" ||
5496     test_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5497         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5498
5499     if ! check_gas ; then
5500         as=${gas:=$as}
5501         check_gas || \
5502             $nogas "GNU assembler not found, install/update gas-preprocessor"
5503     fi
5504
5505     check_as as_func ".func test
5506                       .endfunc"
5507 fi
5508
5509 check_inline_asm inline_asm_labels '"1:\n"'
5510
5511 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5512
5513 if enabled aarch64; then
5514     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5515     # internal assembler in clang 3.3 does not support this instruction
5516     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5517     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5518
5519     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5520
5521 elif enabled alpha; then
5522
5523     check_cflags -mieee
5524
5525 elif enabled arm; then
5526
5527     enabled msvc && check_cpp_condition thumb stddef.h "defined _M_ARMT"
5528     test_cpp_condition stddef.h "defined __thumb__" && test_cc <<EOF && enable_weak thumb
5529 float func(float a, float b){ return a+b; }
5530 EOF
5531     enabled thumb && check_cflags -mthumb || check_cflags -marm
5532
5533     if check_cpp_condition vfp_args stddef.h "defined __ARM_PCS_VFP"; then
5534         :
5535     elif check_cpp_condition vfp_args stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5536         :
5537     elif ! test_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5538         case "${cross_prefix:-$cc}" in
5539             *hardfloat*) enable vfp_args; fpabi=vfp ;;
5540             *) check_ld "cc" vfp_args <<EOF && fpabi=vfp || fpabi=soft ;;
5541 __asm__ (".eabi_attribute 28, 1");
5542 int main(void) { return 0; }
5543 EOF
5544         esac
5545         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5546     fi
5547
5548     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5549     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5550     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5551     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5552     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5553     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5554     enabled setend  && check_insn setend  'setend be'
5555
5556     [ $target_os = linux ] || [ $target_os = android ] ||
5557         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5558             $ARCH_EXT_LIST_ARM
5559
5560     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5561
5562     check_as as_arch_directive ".arch armv7-a"
5563     check_as as_dn_directive   "ra .dn d0.i16"
5564     check_as as_fpu_directive  ".fpu neon"
5565
5566     # llvm's integrated assembler supports .object_arch from llvm 3.5
5567     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
5568         check_as as_object_arch ".object_arch armv4"
5569
5570     # MS armasm fails to assemble our PIC constructs
5571     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5572
5573 elif enabled mips; then
5574
5575     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5576     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5577     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5578
5579     # Enable minimum ISA based on selected options
5580     if enabled mips64; then
5581         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5582         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5583         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5584     else
5585         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5586         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5587         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5588         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5589     fi
5590
5591     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5592     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5593     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_header msa.h || disable msa
5594     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5595     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5596
5597     if enabled bigendian && enabled msa; then
5598         disable msa
5599     fi
5600
5601 elif enabled parisc; then
5602
5603     if enabled gcc; then
5604         case $($cc -dumpversion) in
5605             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5606         esac
5607     fi
5608
5609 elif enabled ppc; then
5610
5611     enable local_aligned
5612
5613     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5614     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5615     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5616     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5617
5618     if enabled altivec; then
5619         check_cflags -maltivec -mabi=altivec
5620
5621         # check if our compiler supports Motorola AltiVec C API
5622         check_cc altivec altivec.h "vector signed int v1 = (vector signed int) { 0 };
5623                                     vector signed int v2 = (vector signed int) { 1 };
5624                                     v1 = vec_add(v1, v2);"
5625
5626         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5627     fi
5628
5629     if enabled vsx; then
5630         check_cflags -mvsx &&
5631         check_cc vsx altivec.h "int v[4] = { 0 };
5632                                 vector signed int v1 = vec_vsx_ld(0, v);"
5633     fi
5634
5635     if enabled power8; then
5636         check_cpp_condition power8 "altivec.h" "defined(_ARCH_PWR8)"
5637     fi
5638
5639 elif enabled x86; then
5640
5641     check_builtin rdtsc    intrin.h   "__rdtsc()"
5642     check_builtin mm_empty mmintrin.h "_mm_empty()"
5643
5644     enable local_aligned
5645
5646     # check whether EBP is available on x86
5647     # As 'i' is stored on the stack, this program will crash
5648     # if the base pointer is used to access it because the
5649     # base pointer is cleared in the inline assembly code.
5650     check_exec_crash <<EOF && enable ebp_available
5651 volatile int i=0;
5652 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5653 return i;
5654 EOF
5655
5656     # check whether EBX is available on x86
5657     check_inline_asm ebx_available '""::"b"(0)' &&
5658         check_inline_asm ebx_available '"":::"%ebx"'
5659
5660     # check whether xmm clobbers are supported
5661     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5662
5663     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5664         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5665
5666     # check whether binutils is new enough to compile SSSE3/MMXEXT
5667     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5668     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5669
5670     probe_x86asm(){
5671         x86asmexe_probe=$1
5672         if test_cmd $x86asmexe_probe -v; then
5673             x86asmexe=$x86asmexe_probe
5674             x86asm_type=nasm
5675             x86asm_debug="-g -F dwarf"
5676             X86ASMDEP=
5677             X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
5678         elif test_cmd $x86asmexe_probe --version; then
5679             x86asmexe=$x86asmexe_probe
5680             x86asm_type=yasm
5681             x86asm_debug="-g dwarf2"
5682             X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
5683             X86ASM_DEPFLAGS=
5684         fi
5685         check_x86asm x86asm "movbe ecx, [5]"
5686     }
5687
5688     if ! disabled_any asm mmx x86asm; then
5689         disable x86asm
5690         for program in $x86asmexe nasm yasm; do
5691             probe_x86asm $program && break
5692         done
5693         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
5694         X86ASMFLAGS="-f $objformat"
5695         enabled pic               && append X86ASMFLAGS "-DPIC"
5696         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
5697         case "$objformat" in
5698             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
5699         esac
5700
5701         check_x86asm avx512_external "vmovdqa32 [eax]{k1}{z}, zmm0"
5702         check_x86asm avx2_external   "vextracti128 xmm0, ymm0, 0"
5703         check_x86asm xop_external    "vpmacsdd xmm0, xmm1, xmm2, xmm3"
5704         check_x86asm fma4_external   "vfmaddps ymm0, ymm1, ymm2, ymm3"
5705         check_x86asm cpunop          "CPU amdnop"
5706     fi
5707
5708     case "$cpu" in
5709         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5710             disable fast_clz
5711         ;;
5712     esac
5713
5714 fi
5715
5716 check_cc intrinsics_neon arm_neon.h "int16x8_t test = vdupq_n_s16(0)"
5717
5718 check_ldflags -Wl,--as-needed
5719 check_ldflags -Wl,-z,noexecstack
5720
5721 if ! disabled network; then
5722     check_func getaddrinfo $network_extralibs
5723     check_func inet_aton $network_extralibs
5724
5725     check_type netdb.h "struct addrinfo"
5726     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5727     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5728     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5729     check_type poll.h "struct pollfd"
5730     check_type netinet/sctp.h "struct sctp_event_subscribe"
5731     check_struct "sys/socket.h" "struct msghdr" msg_flags
5732     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5733     check_type netinet/in.h "struct sockaddr_in6"
5734     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5735     check_type "sys/types.h sys/socket.h" socklen_t
5736
5737     # Prefer arpa/inet.h over winsock2
5738     if check_header arpa/inet.h ; then
5739         check_func closesocket
5740     elif check_header winsock2.h ; then
5741         check_func_headers winsock2.h closesocket -lws2 &&
5742             network_extralibs="-lws2" ||
5743         { check_func_headers winsock2.h closesocket -lws2_32 &&
5744             network_extralibs="-lws2_32"; } || disable winsock2_h network
5745         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5746
5747         check_type ws2tcpip.h socklen_t
5748         check_type ws2tcpip.h "struct addrinfo"
5749         check_type ws2tcpip.h "struct group_source_req"
5750         check_type ws2tcpip.h "struct ip_mreq_source"
5751         check_type ws2tcpip.h "struct ipv6_mreq"
5752         check_type winsock2.h "struct pollfd"
5753         check_struct winsock2.h "struct sockaddr" sa_len
5754         check_type ws2tcpip.h "struct sockaddr_in6"
5755         check_type ws2tcpip.h "struct sockaddr_storage"
5756     else
5757         disable network
5758     fi
5759 fi
5760
5761 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5762 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5763 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5764 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5765 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5766 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5767 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5768
5769 case "$custom_allocator" in
5770     jemalloc)
5771         # jemalloc by default does not use a prefix
5772         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5773     ;;
5774     tcmalloc)
5775         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
5776         malloc_prefix=tc_
5777     ;;
5778 esac
5779
5780 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5781 check_func  ${malloc_prefix}memalign            && enable memalign
5782 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5783
5784 check_func  access
5785 check_func_headers stdlib.h arc4random
5786 check_lib   clock_gettime time.h clock_gettime || check_lib clock_gettime time.h clock_gettime -lrt
5787 check_func  fcntl
5788 check_func  fork
5789 check_func  gethrtime
5790 check_func  getopt
5791 check_func  getrusage
5792 check_func  gettimeofday
5793 check_func  isatty
5794 check_func  mkstemp
5795 check_func  mmap
5796 check_func  mprotect
5797 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5798 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
5799 check_func  sched_getaffinity
5800 check_func  setrlimit
5801 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5802 check_func  strerror_r
5803 check_func  sysconf
5804 check_func  sysctl
5805 check_func  usleep
5806
5807 check_func_headers conio.h kbhit
5808 check_func_headers io.h setmode
5809 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5810 check_func_headers mach/mach_time.h mach_absolute_time
5811 check_func_headers stdlib.h getenv
5812 check_func_headers sys/stat.h lstat
5813
5814 check_func_headers windows.h GetProcessAffinityMask
5815 check_func_headers windows.h GetProcessTimes
5816 check_func_headers windows.h GetSystemTimeAsFileTime
5817 check_func_headers windows.h LoadLibrary
5818 check_func_headers windows.h MapViewOfFile
5819 check_func_headers windows.h PeekNamedPipe
5820 check_func_headers windows.h SetConsoleTextAttribute
5821 check_func_headers windows.h SetConsoleCtrlHandler
5822 check_func_headers windows.h Sleep
5823 check_func_headers windows.h VirtualAlloc
5824 check_func_headers glob.h glob
5825 enabled xlib &&
5826     check_lib xlib "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5827
5828 check_header direct.h
5829 check_header dirent.h
5830 check_header dxgidebug.h
5831 check_header dxva.h
5832 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5833 check_header io.h
5834 check_header linux/perf_event.h
5835 check_header libcrystalhd/libcrystalhd_if.h
5836 check_header malloc.h
5837 check_header net/udplite.h
5838 check_header poll.h
5839 check_header sys/param.h
5840 check_header sys/resource.h
5841 check_header sys/select.h
5842 check_header sys/time.h
5843 check_header sys/un.h
5844 check_header termios.h
5845 check_header unistd.h
5846 check_header valgrind/valgrind.h
5847 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5848 check_header windows.h
5849 check_header X11/extensions/XvMClib.h
5850 check_header asm/types.h
5851
5852 # it seems there are versions of clang in some distros that try to use the
5853 # gcc headers, which explodes for stdatomic
5854 # so we also check that atomics actually work here
5855 check_builtin stdatomic stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0); foo += bar"
5856
5857 check_lib advapi32 "windows.h"            RegCloseKey          -ladvapi32
5858 check_lib bcrypt   "windows.h bcrypt.h"   BCryptGenRandom      -lbcrypt &&
5859     check_cpp_condition bcrypt bcrypt.h "defined BCRYPT_RNG_ALGORITHM"
5860 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
5861 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
5862 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
5863
5864 check_lib android android/native_window.h ANativeWindow_acquire -landroid
5865 check_lib mediandk "stdint.h media/NdkImage.h" AImage_delete -lmediandk
5866 check_lib camera2ndk "stdbool.h stdint.h camera/NdkCameraManager.h" ACameraManager_create -lcamera2ndk
5867
5868 enabled appkit       && check_apple_framework AppKit
5869 enabled audiotoolbox && check_apple_framework AudioToolbox
5870 enabled avfoundation && check_apple_framework AVFoundation
5871 enabled coreimage    && check_apple_framework CoreImage
5872 enabled videotoolbox && check_apple_framework VideoToolbox
5873
5874 check_apple_framework CoreFoundation
5875 check_apple_framework CoreMedia
5876 check_apple_framework CoreVideo
5877
5878 enabled avfoundation && {
5879     disable coregraphics applicationservices
5880     check_lib coregraphics        CoreGraphics/CoreGraphics.h               CGGetActiveDisplayList "-framework CoreGraphics" ||
5881     check_lib applicationservices ApplicationServices/ApplicationServices.h CGGetActiveDisplayList "-framework ApplicationServices"; }
5882
5883 enabled videotoolbox && {
5884     check_lib coreservices CoreServices/CoreServices.h UTGetOSTypeFromString "-framework CoreServices"
5885     check_func_headers CoreMedia/CMFormatDescription.h kCMVideoCodecType_HEVC "-framework CoreMedia"
5886 }
5887
5888 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5889
5890 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5891 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5892 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5893 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5894 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5895
5896 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
5897 check_type "va/va.h va/va_dec_vp8.h" "VAPictureParameterBufferVP8"
5898 check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
5899 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
5900 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
5901 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
5902 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
5903 check_type "va/va.h va/va_enc_mpeg2.h" "VAEncPictureParameterBufferMPEG2"
5904 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
5905 check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
5906
5907 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5908
5909 if ! disabled ffnvcodec; then
5910     check_pkg_config ffnvcodec "ffnvcodec >= 8.1.24.2" \
5911           "ffnvcodec/nvEncodeAPI.h ffnvcodec/dynlink_cuda.h ffnvcodec/dynlink_cuviddec.h ffnvcodec/dynlink_nvcuvid.h" "" || \
5912       check_pkg_config ffnvcodec "ffnvcodec >= 8.0.14.2 ffnvcodec < 8.1" \
5913           "ffnvcodec/nvEncodeAPI.h ffnvcodec/dynlink_cuda.h ffnvcodec/dynlink_cuviddec.h ffnvcodec/dynlink_nvcuvid.h" ""
5914 fi
5915
5916 check_cpp_condition winrt windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)"
5917
5918 if ! disabled w32threads && ! enabled pthreads; then
5919     check_func_headers "windows.h process.h" _beginthreadex &&
5920         check_type "windows.h" CONDITION_VARIABLE &&
5921         check_type "windows.h" INIT_ONCE &&
5922         enable w32threads || disable w32threads
5923     if ! enabled w32threads && enabled winrt; then
5924         check_func_headers "windows.h" CreateThread &&
5925             enable w32threads || disable w32threads
5926     fi
5927 fi
5928
5929 # check for some common methods of building with pthread support
5930 # do this before the optional library checks as some of them require pthreads
5931 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5932     if check_lib pthreads pthread.h pthread_join   -pthread &&
5933        check_lib pthreads pthread.h pthread_create -pthread; then
5934         add_cflags -pthread
5935     elif check_lib pthreads pthread.h pthread_join   -pthreads &&
5936          check_lib pthreads pthread.h pthread_create -pthreads; then
5937         add_cflags -pthreads
5938     elif check_lib pthreads pthread.h pthread_join   -ldl -pthread &&
5939          check_lib pthreads pthread.h pthread_create -ldl -pthread; then
5940         add_cflags -ldl -pthread
5941     elif check_lib pthreads pthread.h pthread_join   -lpthreadGC2 &&
5942          check_lib pthreads pthread.h pthread_create -lpthreadGC2; then
5943         :
5944     elif check_lib pthreads pthread.h pthread_join   -lpthread &&
5945          check_lib pthreads pthread.h pthread_create -lpthread; then
5946         :
5947     elif check_func pthread_join && check_func pthread_create; then
5948         enable pthreads
5949     fi
5950     check_cc pthreads "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER"
5951
5952     if enabled pthreads; then
5953         check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
5954         check_func pthread_cancel $pthreads_extralibs
5955     fi
5956 fi
5957
5958 enabled  zlib && { check_pkg_config zlib zlib "zlib.h" zlibVersion ||
5959                    check_lib zlib   zlib.h      zlibVersion    -lz; }
5960 enabled bzlib && check_lib bzlib bzlib.h BZ2_bzlibVersion    -lbz2
5961 enabled  lzma && check_lib lzma   lzma.h lzma_version_number -llzma
5962
5963 # On some systems dynamic loading requires no extra linker flags
5964 check_lib libdl dlfcn.h "dlopen dlsym" || check_lib libdl dlfcn.h "dlopen dlsym" -ldl
5965
5966 check_lib libm math.h sin -lm
5967
5968 atan2f_args=2
5969 copysign_args=2
5970 hypot_args=2
5971 ldexpf_args=2
5972 powf_args=2
5973
5974 for func in $MATH_FUNCS; do
5975     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
5976 done
5977
5978 for func in $COMPLEX_FUNCS; do
5979     eval check_complexfunc $func \${${func}_args:-1}
5980 done
5981
5982 # these are off by default, so fail if requested and not available
5983 enabled cuda_sdk          && require cuda_sdk cuda.h cuCtxCreate -lcuda
5984 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
5985 enabled decklink          && { require_header DeckLinkAPI.h &&
5986                                { test_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a060100" || die "ERROR: Decklink API version must be >= 10.6.1."; } }
5987 enabled libndi_newtek     && require_header Processing.NDI.Lib.h
5988 enabled frei0r            && require_header frei0r.h
5989 enabled gmp               && require gmp gmp.h mpz_export -lgmp
5990 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init
5991 enabled jni               && { [ $target_os = "android" ] && check_header jni.h && enabled pthreads || die "ERROR: jni not found"; }
5992 enabled ladspa            && require_header ladspa.h
5993 enabled libaom            && require_pkg_config libaom "aom >= 1.0.0" aom/aom_codec.h aom_codec_version
5994 enabled lv2               && require_pkg_config lv2 lilv-0 "lilv/lilv.h" lilv_world_new
5995 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5996 enabled libass            && require_pkg_config libass libass ass/ass.h ass_library_init
5997 enabled libbluray         && require_pkg_config libbluray libbluray libbluray/bluray.h bd_open
5998 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
5999 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
6000                              { check_lib libcelt celt/celt.h celt_decoder_create_custom -lcelt0 ||
6001                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
6002 enabled libcaca           && require_pkg_config libcaca caca caca.h caca_create_canvas
6003 enabled libcodec2         && require libcodec2 codec2/codec2.h codec2_create -lcodec2
6004 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
6005 enabled libdrm            && require_pkg_config libdrm libdrm xf86drm.h drmGetVersion
6006 enabled libfdk_aac        && { check_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
6007                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
6008                                  warn "using libfdk without pkg-config"; } }
6009 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"
6010 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_extralibs
6011 enabled fontconfig        && enable libfontconfig
6012 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
6013 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
6014 enabled libfribidi        && require_pkg_config libfribidi fribidi fribidi.h fribidi_version_info
6015 enabled libgme            && { check_pkg_config libgme libgme gme/gme.h gme_new_emu ||
6016                                require libgme gme/gme.h gme_new_emu -lgme -lstdc++; }
6017 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
6018                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
6019                                done || die "ERROR: libgsm not found"; }
6020 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc $pthreads_extralibs
6021 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
6022 # While it may appear that require is being used as a pkg-config
6023 # fallback for libmfx, it is actually being used to detect a different
6024 # installation route altogether.  If libmfx is installed via the Intel
6025 # Media SDK or Intel Media Server Studio, these don't come with
6026 # pkg-config support.  Instead, users should make sure that the build
6027 # can find the libraries and headers through other means.
6028 enabled libmfx            && { check_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit ||
6029                                { require libmfx "mfx/mfxvideo.h" MFXInit "-llibmfx $advapi32_extralibs" && warn "using libmfx without pkg-config"; } }
6030 enabled libmodplug        && require_pkg_config libmodplug libmodplug libmodplug/modplug.h ModPlug_Load
6031 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame $libm_extralibs
6032 enabled libmysofa         && { check_pkg_config libmysofa libmysofa mysofa.h mysofa_load ||
6033                                require libmysofa mysofa.h mysofa_load -lmysofa $zlib_extralibs; }
6034 enabled libnpp            && { check_lib libnpp npp.h nppGetLibVersion -lnppig -lnppicc -lnppc ||
6035                                check_lib libnpp npp.h nppGetLibVersion -lnppi -lnppc ||
6036                                die "ERROR: libnpp not found"; }
6037 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
6038 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
6039 enabled libopencv         && { check_header opencv2/core/core_c.h &&
6040                                { check_pkg_config libopencv opencv opencv2/core/core_c.h cvCreateImageHeader ||
6041                                  require libopencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
6042                                require_pkg_config libopencv opencv opencv/cxcore.h cvCreateImageHeader; }
6043 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
6044 enabled libopenjpeg       && { check_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version ||
6045                                { require_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } }
6046 enabled libopenmpt        && require_pkg_config libopenmpt "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create -lstdc++ && append libopenmpt_extralibs "-lstdc++"
6047 enabled libopus           && {
6048     enabled libopus_decoder && {
6049         require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
6050     }
6051     enabled libopus_encoder && {
6052         require_pkg_config libopus opus opus_multistream.h opus_multistream_surround_encoder_create
6053     }
6054 }
6055 enabled libpulse          && require_pkg_config libpulse libpulse pulse/pulseaudio.h pa_context_new
6056 enabled librsvg           && require_pkg_config librsvg librsvg-2.0 librsvg-2.0/librsvg/rsvg.h rsvg_handle_render_cairo
6057 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
6058 enabled librubberband     && require_pkg_config librubberband "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new -lstdc++ && append librubberband_extralibs "-lstdc++"
6059 enabled libshine          && require_pkg_config libshine shine shine/layer3.h shine_encode_buffer
6060 enabled libsmbclient      && { check_pkg_config libsmbclient smbclient libsmbclient.h smbc_init ||
6061                                require libsmbclient libsmbclient.h smbc_init -lsmbclient; }
6062 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy -lstdc++
6063 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
6064 enabled libssh            && require_pkg_config libssh libssh libssh/sftp.h sftp_init
6065 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init
6066 enabled libsrt            && require_pkg_config libsrt "srt >= 1.2.0" srt/srt.h srt_socket
6067 enabled libtensorflow     && require libtensorflow tensorflow/c/c_api.h TF_Version -ltensorflow
6068 enabled libtesseract      && require_pkg_config libtesseract tesseract tesseract/capi.h TessBaseAPICreate
6069 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
6070 enabled libtls            && require_pkg_config libtls libtls tls.h tls_configure
6071 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
6072                              { check_lib libtwolame twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
6073                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
6074 enabled libv4l2           && require_pkg_config libv4l2 libv4l2 libv4l2.h v4l2_ioctl
6075 enabled libvidstab        && require_pkg_config libvidstab "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
6076 enabled libvmaf           && require_pkg_config libvmaf "libvmaf >= 0.6.2" libvmaf.h compute_vmaf
6077 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
6078 enabled libvorbis         && require_pkg_config libvorbis vorbis vorbis/codec.h vorbis_info_init &&
6079                              require_pkg_config libvorbisenc vorbisenc vorbis/vorbisenc.h vorbis_encode_init
6080
6081 enabled libvpx            && {
6082     enabled libvpx_vp8_decoder && {
6083         check_pkg_config libvpx_vp8_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
6084             check_lib libvpx_vp8_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_dec_init_ver VPX_IMG_FMT_HIGHBITDEPTH" -lvpx ||
6085                 die "ERROR: libvpx decoder version must be >=1.4.0";
6086     }
6087     enabled libvpx_vp8_encoder && {
6088         check_pkg_config libvpx_vp8_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
6089             check_lib libvpx_vp8_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VPX_IMG_FMT_HIGHBITDEPTH" -lvpx ||
6090                 die "ERROR: libvpx encoder version must be >=1.4.0";
6091     }
6092     enabled libvpx_vp9_decoder && {
6093         check_pkg_config libvpx_vp9_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
6094             check_lib libvpx_vp9_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx VPX_IMG_FMT_HIGHBITDEPTH" "-lvpx $libm_extralibs"
6095     }
6096     enabled libvpx_vp9_encoder && {
6097         check_pkg_config libvpx_vp9_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
6098             check_lib libvpx_vp9_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VPX_IMG_FMT_HIGHBITDEPTH" "-lvpx $libm_extralibs"
6099     }
6100     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
6101         die "libvpx enabled but no supported decoders found"
6102     fi
6103 }
6104
6105 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
6106 enabled libwebp           && {
6107     enabled libwebp_encoder      && require_pkg_config libwebp "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
6108     enabled libwebp_anim_encoder && check_pkg_config libwebp_anim_encoder "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit; }
6109 enabled libx264           && { check_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode ||
6110                                { require libx264 "stdint.h x264.h" x264_encoder_encode "-lx264 $pthreads_extralibs $libm_extralibs" &&
6111                                  warn "using libx264 without pkg-config"; } } &&
6112                              require_cpp_condition x264.h "X264_BUILD >= 118" &&
6113                              check_cpp_condition libx262 x264.h "X264_MPEG2"
6114 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
6115                              require_cpp_condition x265.h "X265_BUILD >= 68"
6116 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode "-lxavs $pthreads_extralibs $libm_extralibs"
6117 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
6118 enabled libzimg           && require_pkg_config libzimg "zimg >= 2.7.0" zimg.h zimg_get_api_version
6119 enabled libzmq            && require_pkg_config libzmq libzmq zmq.h zmq_ctx_new
6120 enabled libzvbi           && require_pkg_config libzvbi zvbi-0.2 libzvbi.h vbi_decoder_new &&
6121                              { test_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
6122                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
6123 enabled libxml2           && require_pkg_config libxml2 libxml-2.0 libxml2/libxml/xmlversion.h xmlCheckVersion
6124 enabled mbedtls           && { check_pkg_config mbedtls mbedtls mbedtls/x509_crt.h mbedtls_x509_crt_init ||
6125                                check_pkg_config mbedtls mbedtls mbedtls/ssl.h mbedtls_ssl_init ||
6126                                check_lib mbedtls mbedtls/ssl.h mbedtls_ssl_init -lmbedtls -lmbedx509 -lmbedcrypto ||
6127                                die "ERROR: mbedTLS not found"; }
6128 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
6129 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
6130                                { ! enabled cross_compile &&
6131                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
6132                                  add_ldflags -L/opt/vc/lib/ &&
6133                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
6134                                die "ERROR: mmal not found" &&
6135                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
6136 enabled openal            && { { for al_extralibs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
6137                                check_lib openal 'AL/al.h' alGetError "${al_extralibs}" && break; done } ||
6138                                die "ERROR: openal not found"; } &&
6139                              { test_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
6140                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
6141 enabled opencl            && { check_pkg_config opencl OpenCL CL/cl.h clEnqueueNDRangeKernel ||
6142                                check_lib opencl OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
6143                                check_lib opencl CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
6144                                die "ERROR: opencl not found"; } &&
6145                              { test_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
6146                                test_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
6147                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
6148 enabled opengl            && { check_lib opengl GL/glx.h glXGetProcAddress "-lGL" ||
6149                                check_lib opengl windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
6150                                check_lib opengl OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
6151                                check_lib opengl ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
6152                                die "ERROR: opengl not found."
6153                              }
6154 enabled omx               && require_header OMX_Core.h
6155 enabled omx_rpi           && { check_header OMX_Core.h ||
6156                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_header OMX_Core.h ; } ||
6157                                die "ERROR: OpenMAX IL headers not found"; } && enable omx
6158 enabled openssl           && { check_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
6159                                check_pkg_config openssl openssl openssl/ssl.h SSL_library_init ||
6160                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
6161                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
6162                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
6163                                die "ERROR: openssl not found"; }
6164 enabled rkmpp             && { require_pkg_config rkmpp rockchip_mpp  rockchip/rk_mpi.h mpp_create &&
6165                                require_pkg_config rockchip_mpp "rockchip_mpp >= 1.3.7" rockchip/rk_mpi.h mpp_create &&
6166                                { enabled libdrm ||
6167                                  die "ERROR: rkmpp requires --enable-libdrm"; }
6168                              }
6169 enabled vapoursynth       && require_pkg_config vapoursynth "vapoursynth-script >= 42" VSScript.h vsscript_init
6170
6171
6172 if enabled gcrypt; then
6173     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
6174     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
6175         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
6176         gcrypt_extralibs=$("${GCRYPT_CONFIG}" --libs)
6177         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_extralibs ||
6178             die "ERROR: gcrypt not found"
6179         add_cflags $gcrypt_cflags
6180     else
6181         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
6182     fi
6183 fi
6184
6185 if enabled sdl2; then
6186     SDL2_CONFIG="${cross_prefix}sdl2-config"
6187     test_pkg_config sdl2 "sdl2 >= 2.0.1 sdl2 < 2.1.0" SDL_events.h SDL_PollEvent
6188     if disabled sdl2 && "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
6189         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
6190         sdl2_extralibs=$("${SDL2_CONFIG}" --libs)
6191         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
6192         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
6193         check_func_headers SDL_events.h SDL_PollEvent $sdl2_extralibs $sdl2_cflags &&
6194             enable sdl2
6195     fi
6196     if test $target_os = "mingw32"; then
6197         sdl2_extralibs=$(filter_out '-mwindows' $sdl2_extralibs)
6198     fi
6199 fi
6200
6201 if enabled decklink; then
6202     case $target_os in
6203         mingw32*|mingw64*|win32|win64)
6204             decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
6205             decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
6206             ;;
6207     esac
6208 fi
6209
6210 enabled securetransport &&
6211     check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
6212     check_lib securetransport "Security/SecureTransport.h Security/Security.h" "SSLCreateContext" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" ||
6213         disable securetransport
6214
6215 enabled securetransport &&
6216     check_func SecItemImport "-Wl,-framework,CoreFoundation -Wl,-framework,Security"
6217
6218 enabled schannel &&
6219     check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
6220     test_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" &&
6221     schannel_extralibs="-lsecur32" ||
6222         disable schannel
6223
6224 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
6225 enabled makeinfo \
6226     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
6227     && enable makeinfo_html || disable makeinfo_html
6228 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
6229 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
6230 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
6231 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
6232
6233 # check V4L2 codecs available in the API
6234 check_header linux/fb.h
6235 check_header linux/videodev2.h
6236 test_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6237 check_cc v4l2_m2m linux/videodev2.h "int i = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_VIDEO_M2M | V4L2_BUF_FLAG_LAST;"
6238 check_cc vc1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VC1_ANNEX_G;"
6239 check_cc mpeg1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG1;"
6240 check_cc mpeg2_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG2;"
6241 check_cc mpeg4_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG4;"
6242 check_cc hevc_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_HEVC;"
6243 check_cc h263_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H263;"
6244 check_cc h264_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H264;"
6245 check_cc vp8_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP8;"
6246 check_cc vp9_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP9;"
6247
6248 check_header sys/videoio.h
6249 test_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6250
6251 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
6252 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
6253 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
6254 # w32api 3.12 had it defined wrong
6255 check_cpp_condition vfwcap_defines vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER"
6256
6257 check_type "dshow.h" IBaseFilter
6258
6259 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
6260 check_header "dev/bktr/ioctl_meteor.h dev/bktr/ioctl_bt848.h"                   ||
6261     check_header "machine/ioctl_meteor.h machine/ioctl_bt848.h"                 ||
6262     check_header "dev/video/meteor/ioctl_meteor.h dev/video/bktr/ioctl_bt848.h" ||
6263     check_header "dev/ic/bt8xx.h"
6264
6265 if check_struct sys/soundcard.h audio_buf_info bytes; then
6266     enable_sanitized sys/soundcard.h
6267 else
6268     test_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_sanitized sys/soundcard.h
6269     #include <sys/soundcard.h>
6270     audio_buf_info abc;
6271 EOF
6272 fi
6273
6274 enabled alsa && check_pkg_config alsa alsa "alsa/asoundlib.h" snd_pcm_htimestamp ||
6275     check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound
6276
6277 enabled libjack &&
6278     require_pkg_config libjack jack jack/jack.h jack_port_get_latency_range
6279
6280 enabled sndio && check_lib sndio sndio.h sio_open -lsndio
6281
6282 if enabled libcdio; then
6283     check_pkg_config libcdio libcdio_paranoia "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open ||
6284     check_pkg_config libcdio libcdio_paranoia "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open ||
6285     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6286     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6287     die "ERROR: No usable libcdio/cdparanoia found"
6288 fi
6289
6290 enabled libxcb && check_pkg_config libxcb "xcb >= 1.4" xcb/xcb.h xcb_connect ||
6291     disable libxcb_shm libxcb_shape libxcb_xfixes
6292
6293 if enabled libxcb; then
6294     enabled libxcb_shm    && check_pkg_config libxcb_shm    xcb-shm    xcb/shm.h    xcb_shm_attach
6295     enabled libxcb_shape  && check_pkg_config libxcb_shape  xcb-shape  xcb/shape.h  xcb_shape_get_rectangles
6296     enabled libxcb_xfixes && check_pkg_config libxcb_xfixes xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image
6297 fi
6298
6299 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6300
6301 # d3d11va requires linking directly to dxgi and d3d11 if not building for
6302 # the desktop api partition
6303 test_cpp <<EOF && enable uwp && d3d11va_extralibs="-ldxgi -ld3d11"
6304 #ifdef WINAPI_FAMILY
6305 #include <winapifamily.h>
6306 #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
6307 #error desktop, not uwp
6308 #else
6309 // WINAPI_FAMILY_APP, WINAPI_FAMILY_PHONE_APP => UWP
6310 #endif
6311 #else
6312 #error no family set
6313 #endif
6314 EOF
6315
6316 enabled vaapi &&
6317     check_lib vaapi va/va.h vaInitialize -lva
6318
6319 enabled vaapi &&
6320     check_cc vaapi "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)"
6321
6322 if enabled vaapi; then
6323     check_lib vaapi_drm "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm
6324     check_lib vaapi_x11 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 -lX11
6325 fi
6326
6327 enabled vaapi &&
6328     check_cpp_condition vaapi_1 "va/va.h" "VA_CHECK_VERSION(1, 0, 0)"
6329
6330 if enabled_all opencl libdrm ; then
6331     check_type "CL/cl_intel.h" "clCreateImageFromFdINTEL_fn" &&
6332         enable opencl_drm_beignet
6333     check_func_headers "CL/cl_ext.h" clImportMemoryARM &&
6334         enable opencl_drm_arm
6335 fi
6336
6337 if enabled_all opencl vaapi ; then
6338     enabled opencl_drm_beignet && enable opencl_vaapi_beignet
6339     check_type "CL/cl.h CL/va_ext.h" "clCreateFromVA_APIMediaSurfaceINTEL_fn" &&
6340         enable opencl_vaapi_intel_media
6341 fi
6342
6343 if enabled_all opencl dxva2 ; then
6344     check_type "CL/cl_dx9_media_sharing.h" cl_dx9_surface_info_khr &&
6345         enable opencl_dxva2
6346 fi
6347
6348 if enabled_all opencl d3d11va ; then
6349     check_type "CL/cl_d3d11.h" clGetDeviceIDsFromD3D11KHR_fn &&
6350         enable opencl_d3d11
6351 fi
6352
6353 enabled vdpau &&
6354     check_cpp_condition vdpau vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP"
6355
6356 enabled vdpau &&
6357     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
6358
6359 enabled crystalhd && check_lib crystalhd "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd
6360
6361 if enabled x86; then
6362     case $target_os in
6363         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6364             ;;
6365         *)
6366             disable ffnvcodec cuvid nvdec nvenc
6367             ;;
6368     esac
6369 else
6370     disable ffnvcodec cuvid nvdec nvenc
6371 fi
6372
6373 enabled ffnvcodec && enable cuda
6374
6375 enabled nvenc &&
6376     test_cc -I$source_path <<EOF || disable nvenc
6377 #include <ffnvcodec/nvEncodeAPI.h>
6378 NV_ENCODE_API_FUNCTION_LIST flist;
6379 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6380 int main(void) { return 0; }
6381 EOF
6382
6383 enabled amf &&
6384     check_cpp_condition amf "AMF/core/Version.h" \
6385         "(AMF_VERSION_MAJOR << 48 | AMF_VERSION_MINOR << 32 | AMF_VERSION_RELEASE << 16 | AMF_VERSION_BUILD_NUM) >= 0x0001000400040001"
6386
6387 # Funny iconv installations are not unusual, so check it after all flags have been set
6388 if enabled libc_iconv; then
6389     check_func_headers iconv.h iconv
6390 elif enabled iconv; then
6391     check_func_headers iconv.h iconv || check_lib iconv iconv.h iconv -liconv
6392 fi
6393
6394 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6395
6396 # add some useful compiler flags if supported
6397 check_cflags -Wdeclaration-after-statement
6398 check_cflags -Wall
6399 check_cflags -Wdisabled-optimization
6400 check_cflags -Wpointer-arith
6401 check_cflags -Wredundant-decls
6402 check_cflags -Wwrite-strings
6403 check_cflags -Wtype-limits
6404 check_cflags -Wundef
6405 check_cflags -Wmissing-prototypes
6406 check_cflags -Wno-pointer-to-int-cast
6407 check_cflags -Wstrict-prototypes
6408 check_cflags -Wempty-body
6409
6410 if enabled extra_warnings; then
6411     check_cflags -Wcast-qual
6412     check_cflags -Wextra
6413     check_cflags -Wpedantic
6414 fi
6415
6416 check_disable_warning(){
6417     warning_flag=-W${1#-Wno-}
6418     test_cflags $unknown_warning_flags $warning_flag && add_cflags $1
6419 }
6420
6421 test_cflags -Werror=unused-command-line-argument &&
6422     append unknown_warning_flags "-Werror=unused-command-line-argument"
6423 test_cflags -Werror=unknown-warning-option &&
6424     append unknown_warning_flags "-Werror=unknown-warning-option"
6425
6426 check_disable_warning -Wno-parentheses
6427 check_disable_warning -Wno-switch
6428 check_disable_warning -Wno-format-zero-length
6429 check_disable_warning -Wno-pointer-sign
6430 check_disable_warning -Wno-unused-const-variable
6431 check_disable_warning -Wno-bool-operation
6432
6433 check_disable_warning_headers(){
6434     warning_flag=-W${1#-Wno-}
6435     test_cflags $warning_flag && add_cflags_headers $1
6436 }
6437
6438 check_disable_warning_headers -Wno-deprecated-declarations
6439 check_disable_warning_headers -Wno-unused-variable
6440
6441 test_cc <<EOF && enable blocks_extension
6442 void (^block)(void);
6443 EOF
6444
6445 # add some linker flags
6446 check_ldflags -Wl,--warn-common
6447 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6448 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir && add_ldsoflags -Wl,-rpath,$libdir
6449 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6450
6451 # add some strip flags
6452 check_stripflags -x
6453
6454 enabled neon_clobber_test &&
6455     check_ldflags -Wl,--wrap,avcodec_open2              \
6456                   -Wl,--wrap,avcodec_decode_audio4      \
6457                   -Wl,--wrap,avcodec_decode_video2      \
6458                   -Wl,--wrap,avcodec_decode_subtitle2   \
6459                   -Wl,--wrap,avcodec_encode_audio2      \
6460                   -Wl,--wrap,avcodec_encode_video2      \
6461                   -Wl,--wrap,avcodec_encode_subtitle    \
6462                   -Wl,--wrap,avcodec_send_packet        \
6463                   -Wl,--wrap,avcodec_receive_packet     \
6464                   -Wl,--wrap,avcodec_send_frame         \
6465                   -Wl,--wrap,avcodec_receive_frame      \
6466                   -Wl,--wrap,swr_convert                \
6467                   -Wl,--wrap,avresample_convert ||
6468     disable neon_clobber_test
6469
6470 enabled xmm_clobber_test &&
6471     check_ldflags -Wl,--wrap,avcodec_open2              \
6472                   -Wl,--wrap,avcodec_decode_audio4      \
6473                   -Wl,--wrap,avcodec_decode_video2      \
6474                   -Wl,--wrap,avcodec_decode_subtitle2   \
6475                   -Wl,--wrap,avcodec_encode_audio2      \
6476                   -Wl,--wrap,avcodec_encode_video2      \
6477                   -Wl,--wrap,avcodec_encode_subtitle    \
6478                   -Wl,--wrap,avcodec_send_packet        \
6479                   -Wl,--wrap,avcodec_receive_packet     \
6480                   -Wl,--wrap,avcodec_send_frame         \
6481                   -Wl,--wrap,avcodec_receive_frame      \
6482                   -Wl,--wrap,swr_convert                \
6483                   -Wl,--wrap,avresample_convert         \
6484                   -Wl,--wrap,sws_scale ||
6485     disable xmm_clobber_test
6486
6487 check_ld "cc" proper_dce <<EOF
6488 extern const int array[512];
6489 static inline int func(void) { return array[0]; }
6490 int main(void) { return 0; }
6491 EOF
6492
6493 if enabled proper_dce; then
6494     echo "X { local: *; };" > $TMPV
6495     if test_ldflags -Wl,${version_script},$TMPV; then
6496         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6497         quotes='""'
6498         test_cc <<EOF && enable symver_asm_label
6499 void ff_foo(void) __asm__ ("av_foo@VERSION");
6500 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6501 EOF
6502         test_cc <<EOF && enable symver_gnu_asm
6503 __asm__(".symver ff_foo,av_foo@VERSION");
6504 void ff_foo(void) {}
6505 EOF
6506     fi
6507 fi
6508
6509 if [ -z "$optflags" ]; then
6510     if enabled small; then
6511         optflags=$cflags_size
6512     elif enabled optimizations; then
6513         optflags=$cflags_speed
6514     else
6515         optflags=$cflags_noopt
6516     fi
6517 fi
6518
6519 if [ -z "$nvccflags" ]; then
6520     nvccflags=$nvccflags_default
6521 fi
6522
6523 if enabled x86_64 || enabled ppc64 || enabled aarch64; then
6524     nvccflags="$nvccflags -m64"
6525 else
6526     nvccflags="$nvccflags -m32"
6527 fi
6528
6529 check_optflags(){
6530     check_cflags "$@"
6531     enabled lto && check_ldflags "$@"
6532 }
6533
6534 check_optflags $optflags
6535 check_optflags -fno-math-errno
6536 check_optflags -fno-signed-zeros
6537
6538 if enabled lto; then
6539     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6540     check_cflags  -flto
6541     check_ldflags -flto $cpuflags
6542     disable inline_asm_direct_symbol_refs
6543 fi
6544
6545 enabled ftrapv && check_cflags -ftrapv
6546
6547 test_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6548 int x;
6549 EOF
6550
6551
6552 if enabled icc; then
6553     # Just warnings, no remarks
6554     check_cflags -w1
6555     # -wd: Disable following warnings
6556     # 144, 167, 556: -Wno-pointer-sign
6557     # 188: enumerated type mixed with another type
6558     # 1292: attribute "foo" ignored
6559     # 1419: external declaration in primary source file
6560     # 10006: ignoring unknown option -fno-signed-zeros
6561     # 10148: ignoring unknown option -Wno-parentheses
6562     # 10156: ignoring option '-W'; no argument required
6563     # 13200: No EMMS instruction before call to function
6564     # 13203: No EMMS instruction before return from function
6565     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6566     # 11030: Warning unknown option --as-needed
6567     # 10156: ignoring option '-export'; no argument required
6568     check_ldflags -wd10156,11030
6569     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6570     enable ebp_available
6571     # The test above does not test linking
6572     enabled lto && disable symver_asm_label
6573     if enabled x86_32; then
6574         icc_version=$($cc -dumpversion)
6575         test ${icc_version%%.*} -ge 11 &&
6576             check_cflags -falign-stack=maintain-16-byte ||
6577             disable aligned_stack
6578     fi
6579 elif enabled gcc; then
6580     check_optflags -fno-tree-vectorize
6581     check_cflags -Werror=format-security
6582     check_cflags -Werror=implicit-function-declaration
6583     check_cflags -Werror=missing-prototypes
6584     check_cflags -Werror=return-type
6585     check_cflags -Werror=vla
6586     check_cflags -Wformat
6587     check_cflags -fdiagnostics-color=auto
6588     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6589     if enabled x86_32; then
6590         case $target_os in
6591         *bsd*)
6592             # BSDs don't guarantee a 16 byte aligned stack, but we can
6593             # request GCC to try to maintain 16 byte alignment throughout
6594             # function calls. Library entry points that might call assembly
6595             # functions align the stack. (The parameter means 2^4 bytes.)
6596             check_cflags -mpreferred-stack-boundary=4
6597             ;;
6598         esac
6599     fi
6600 elif enabled llvm_gcc; then
6601     check_cflags -mllvm -stack-alignment=16
6602 elif enabled clang; then
6603     if enabled x86_32; then
6604         # Clang doesn't support maintaining alignment without assuming the
6605         # same alignment in every function. If 16 byte alignment would be
6606         # enabled, one would also have to either add attribute_align_arg on
6607         # every single entry point into the libraries or enable -mstackrealign
6608         # (doing stack realignment in every single function).
6609         case $target_os in
6610         mingw32|win32|*bsd*)
6611             disable aligned_stack
6612             ;;
6613         *)
6614             check_cflags -mllvm -stack-alignment=16
6615             check_cflags -mstack-alignment=16
6616             ;;
6617         esac
6618     else
6619         check_cflags -mllvm -stack-alignment=16
6620         check_cflags -mstack-alignment=16
6621     fi
6622     check_cflags -Qunused-arguments
6623     check_cflags -Werror=implicit-function-declaration
6624     check_cflags -Werror=missing-prototypes
6625     check_cflags -Werror=return-type
6626 elif enabled cparser; then
6627     add_cflags -Wno-missing-variable-declarations
6628     add_cflags -Wno-empty-statement
6629 elif enabled armcc; then
6630     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6631     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6632     # 2523: use of inline assembly is deprecated
6633     add_cflags -W${armcc_opt},--diag_suppress=2523
6634     add_cflags -W${armcc_opt},--diag_suppress=1207
6635     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6636     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6637     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6638     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6639 elif enabled pathscale; then
6640     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6641     disable inline_asm
6642 elif enabled_any msvc icl; then
6643     enabled x86_32 && disable aligned_stack
6644     enabled_all x86_32 debug && add_cflags -Oy-
6645     enabled debug && add_ldflags -debug
6646     enable pragma_deprecated
6647     if enabled icl; then
6648         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6649         # (correctly) on icl 13.x.
6650         test_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6651             add_cflags -Qansi-alias
6652         # Some inline asm is not compilable in debug
6653         if enabled debug; then
6654             disable ebp_available
6655             disable ebx_available
6656         fi
6657     fi
6658     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6659     check_cpp_condition log2 crtversion.h "_VC_CRT_MAJOR_VERSION >= 12"
6660     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6661     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6662     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6663     # MSVC 2013 and newer can handle it fine.
6664     # If this declspec fails, force including stdlib.h before the restrict redefinition
6665     # happens in config.h.
6666     if [ $restrict_keyword != restrict ]; then
6667         test_cc <<EOF || add_cflags -FIstdlib.h
6668 __declspec($restrict_keyword) void *foo(int);
6669 EOF
6670     fi
6671     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6672     # Issue has been fixed in MSVC v19.00.24218.
6673     test_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6674         check_cflags -d2SSAOptimizer-
6675     # enable utf-8 source processing on VS2015 U2 and newer
6676     test_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6677         add_cflags -utf-8
6678 fi
6679
6680 for pfx in "" host_; do
6681     varname=${pfx%_}cc_type
6682     eval "type=\$$varname"
6683     if [ "$type" = "msvc" ]; then
6684         test_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6685 static inline int foo(int a) { return a; }
6686 EOF
6687     fi
6688 done
6689
6690 case $as_type in
6691     clang)
6692         add_asflags -Qunused-arguments
6693     ;;
6694 esac
6695
6696 case $ld_type in
6697     clang)
6698         check_ldflags -Qunused-arguments
6699     ;;
6700 esac
6701
6702 enable frame_thread_encoder
6703
6704 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6705
6706 check_deps $CONFIG_LIST       \
6707            $CONFIG_EXTRA      \
6708            $HAVE_LIST         \
6709            $ALL_COMPONENTS    \
6710
6711 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"
6712 enabled avresample && warn "Building with deprecated library libavresample"
6713
6714 if test $target_os = "haiku"; then
6715     disable memalign
6716     disable posix_memalign
6717 fi
6718
6719 flatten_extralibs(){
6720     unset nested_entries
6721     list_name=$1
6722     eval list=\$${1}
6723     for entry in $list; do
6724         entry_copy=$entry
6725         resolve entry_copy
6726         append nested_entries $(filter '*_extralibs' $entry_copy)
6727         flat_entries=$(filter_out '*_extralibs' $entry_copy)
6728         eval $entry="\$flat_entries"
6729     done
6730     append $list_name "$nested_entries"
6731
6732     resolve nested_entries
6733     if test -n "$(filter '*_extralibs' $nested_entries)"; then
6734         flatten_extralibs $list_name
6735     fi
6736 }
6737
6738 flatten_extralibs_wrapper(){
6739     list_name=$1
6740     flatten_extralibs $list_name
6741     unique $list_name
6742     resolve $list_name
6743     eval $list_name=\$\(\$ldflags_filter \$$list_name\)
6744     eval printf \''%s'\' \""\$$list_name"\"
6745 }
6746
6747 for linkunit in $LIBRARY_LIST; do
6748     unset current_extralibs
6749     eval components=\$$(toupper ${linkunit})_COMPONENTS_LIST
6750     for comp in ${components}; do
6751         enabled $comp || continue
6752         comp_extralibs="${comp}_extralibs"
6753         append current_extralibs $comp_extralibs
6754     done
6755     eval prepend ${linkunit}_extralibs $current_extralibs
6756 done
6757
6758 for linkunit in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
6759     eval ${linkunit}_extralibs=\$\(flatten_extralibs_wrapper ${linkunit}_extralibs\)
6760 done
6761
6762 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6763
6764 for thread in $THREADS_LIST; do
6765     if enabled $thread; then
6766         test -n "$thread_type" &&
6767             die "ERROR: Only one thread type must be selected." ||
6768             thread_type="$thread"
6769     fi
6770 done
6771
6772 if disabled stdatomic; then
6773     if enabled atomics_gcc; then
6774         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
6775     elif enabled atomics_win32; then
6776         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
6777     elif enabled atomics_suncc; then
6778         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
6779     elif enabled pthreads; then
6780         add_compat atomics/pthread/stdatomic.o
6781         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
6782     else
6783         enabled threads && die "Threading is enabled, but no atomics are available"
6784         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
6785     fi
6786 fi
6787
6788 # Check if requested libraries were found.
6789 for lib in $AUTODETECT_LIBS; do
6790     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
6791 done
6792
6793 enabled zlib && add_cppflags -DZLIB_CONST
6794
6795 # conditional library dependencies, in linking order
6796 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6797 enabled afir_filter         && prepend avfilter_deps "avcodec"
6798 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6799 enabled aresample_filter    && prepend avfilter_deps "swresample"
6800 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6801 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6802 enabled convolve_filter     && prepend avfilter_deps "avcodec"
6803 enabled deconvolve_filter   && prepend avfilter_deps "avcodec"
6804 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6805 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6806 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6807 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6808 enabled firequalizer_filter && prepend avfilter_deps "avcodec"
6809 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6810 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6811 enabled pan_filter          && prepend avfilter_deps "swresample"
6812 enabled pp_filter           && prepend avfilter_deps "postproc"
6813 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6814 enabled resample_filter && prepend avfilter_deps "avresample"
6815 enabled sab_filter          && prepend avfilter_deps "swscale"
6816 enabled scale_filter    && prepend avfilter_deps "swscale"
6817 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6818 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6819 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6820 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6821 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6822 enabled signature_filter    && prepend avfilter_deps "avcodec avformat"
6823 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6824 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6825 enabled spp_filter          && prepend avfilter_deps "avcodec"
6826 enabled srcnn_filter        && prepend avfilter_deps "avformat"
6827 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6828 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6829 enabled zoompan_filter      && prepend avfilter_deps "swscale"
6830
6831 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6832
6833 #FIXME
6834 enabled sdl2_outdev     && add_cflags $(filter_out '-Dmain=SDL_main' $sdl2_cflags)
6835
6836 enabled opus_decoder    && prepend avcodec_deps "swresample"
6837
6838 expand_deps(){
6839     lib_deps=${1}_deps
6840     eval "deps=\$$lib_deps"
6841     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
6842     unique $lib_deps
6843 }
6844
6845 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6846 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6847
6848 map 'expand_deps $v' $LIBRARY_LIST
6849
6850 if test "$quiet" != "yes"; then
6851
6852 echo "install prefix            $prefix"
6853 echo "source path               $source_path"
6854 echo "C compiler                $cc"
6855 echo "C library                 $libc_type"
6856 if test "$host_cc" != "$cc"; then
6857     echo "host C compiler           $host_cc"
6858     echo "host C library            $host_libc_type"
6859 fi
6860 echo "ARCH                      $arch ($cpu)"
6861 if test "$build_suffix" != ""; then
6862     echo "build suffix              $build_suffix"
6863 fi
6864 if test "$progs_suffix" != ""; then
6865     echo "progs suffix              $progs_suffix"
6866 fi
6867 if test "$extra_version" != ""; then
6868     echo "version string suffix     $extra_version"
6869 fi
6870 echo "big-endian                ${bigendian-no}"
6871 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6872 if enabled x86; then
6873     echo "standalone assembly       ${x86asm-no}"
6874     echo "x86 assembler             ${x86asmexe}"
6875     echo "MMX enabled               ${mmx-no}"
6876     echo "MMXEXT enabled            ${mmxext-no}"
6877     echo "3DNow! enabled            ${amd3dnow-no}"
6878     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6879     echo "SSE enabled               ${sse-no}"
6880     echo "SSSE3 enabled             ${ssse3-no}"
6881     echo "AESNI enabled             ${aesni-no}"
6882     echo "AVX enabled               ${avx-no}"
6883     echo "AVX2 enabled              ${avx2-no}"
6884     echo "AVX-512 enabled           ${avx512-no}"
6885     echo "XOP enabled               ${xop-no}"
6886     echo "FMA3 enabled              ${fma3-no}"
6887     echo "FMA4 enabled              ${fma4-no}"
6888     echo "i686 features enabled     ${i686-no}"
6889     echo "CMOV is fast              ${fast_cmov-no}"
6890     echo "EBX available             ${ebx_available-no}"
6891     echo "EBP available             ${ebp_available-no}"
6892 fi
6893 if enabled aarch64; then
6894     echo "NEON enabled              ${neon-no}"
6895     echo "VFP enabled               ${vfp-no}"
6896 fi
6897 if enabled arm; then
6898     echo "ARMv5TE enabled           ${armv5te-no}"
6899     echo "ARMv6 enabled             ${armv6-no}"
6900     echo "ARMv6T2 enabled           ${armv6t2-no}"
6901     echo "VFP enabled               ${vfp-no}"
6902     echo "NEON enabled              ${neon-no}"
6903     echo "THUMB enabled             ${thumb-no}"
6904 fi
6905 if enabled mips; then
6906     echo "MIPS FPU enabled          ${mipsfpu-no}"
6907     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
6908     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
6909     echo "MIPS MSA enabled          ${msa-no}"
6910     echo "LOONGSON MMI enabled      ${mmi-no}"
6911 fi
6912 if enabled ppc; then
6913     echo "AltiVec enabled           ${altivec-no}"
6914     echo "VSX enabled               ${vsx-no}"
6915     echo "POWER8 enabled            ${power8-no}"
6916     echo "PPC 4xx optimizations     ${ppc4xx-no}"
6917     echo "dcbzl available           ${dcbzl-no}"
6918 fi
6919 echo "debug symbols             ${debug-no}"
6920 echo "strip symbols             ${stripping-no}"
6921 echo "optimize for size         ${small-no}"
6922 echo "optimizations             ${optimizations-no}"
6923 echo "static                    ${static-no}"
6924 echo "shared                    ${shared-no}"
6925 echo "postprocessing support    ${postproc-no}"
6926 echo "network support           ${network-no}"
6927 echo "threading support         ${thread_type-no}"
6928 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
6929 echo "texi2html enabled         ${texi2html-no}"
6930 echo "perl enabled              ${perl-no}"
6931 echo "pod2man enabled           ${pod2man-no}"
6932 echo "makeinfo enabled          ${makeinfo-no}"
6933 echo "makeinfo supports HTML    ${makeinfo_html-no}"
6934 test -n "$random_seed" &&
6935     echo "random seed               ${random_seed}"
6936 echo
6937
6938 echo "External libraries:"
6939 print_enabled '' $EXTERNAL_LIBRARY_LIST $EXTERNAL_AUTODETECT_LIBRARY_LIST | print_in_columns
6940 echo
6941
6942 echo "External libraries providing hardware acceleration:"
6943 print_enabled '' $HWACCEL_LIBRARY_LIST $HWACCEL_AUTODETECT_LIBRARY_LIST | print_in_columns
6944 echo
6945
6946 echo "Libraries:"
6947 print_enabled '' $LIBRARY_LIST | print_in_columns
6948 echo
6949
6950 echo "Programs:"
6951 print_enabled '' $PROGRAM_LIST | print_in_columns
6952 echo
6953
6954 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
6955     echo "Enabled ${type}s:"
6956     eval list=\$$(toupper $type)_LIST
6957     print_enabled '_*' $list | print_in_columns
6958     echo
6959 done
6960
6961 if test -n "$ignore_tests"; then
6962     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
6963     echo "Ignored FATE tests:"
6964     echo $ignore_tests | print_in_columns
6965     echo
6966 fi
6967
6968 echo "License: $license"
6969
6970 fi # test "$quiet" != "yes"
6971
6972 if test -n "$WARNINGS"; then
6973     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
6974     enabled fatal_warnings && exit 1
6975 fi
6976
6977 test -e Makefile || echo "include $source_path/Makefile" > Makefile
6978
6979 esc(){
6980     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
6981 }
6982
6983 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" > ffbuild/config.fate
6984
6985 enabled stripping || strip="echo skipping strip"
6986 enabled stripping || striptype=""
6987
6988 config_files="$TMPH ffbuild/config.mak doc/config.texi"
6989
6990 cat > ffbuild/config.mak <<EOF
6991 # Automatically generated by configure - do not modify!
6992 ifndef FFMPEG_CONFIG_MAK
6993 FFMPEG_CONFIG_MAK=1
6994 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
6995 prefix=$prefix
6996 LIBDIR=\$(DESTDIR)$libdir
6997 SHLIBDIR=\$(DESTDIR)$shlibdir
6998 INCDIR=\$(DESTDIR)$incdir
6999 BINDIR=\$(DESTDIR)$bindir
7000 DATADIR=\$(DESTDIR)$datadir
7001 DOCDIR=\$(DESTDIR)$docdir
7002 MANDIR=\$(DESTDIR)$mandir
7003 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
7004 INSTALL_NAME_DIR=$install_name_dir
7005 SRC_PATH=$source_path
7006 SRC_LINK=$source_link
7007 ifndef MAIN_MAKEFILE
7008 SRC_PATH:=\$(SRC_PATH:.%=..%)
7009 endif
7010 CC_IDENT=$cc_ident
7011 ARCH=$arch
7012 INTRINSICS=$intrinsics
7013 EXTERN_PREFIX=$extern_prefix
7014 CC=$cc
7015 CXX=$cxx
7016 AS=$as
7017 OBJCC=$objcc
7018 LD=$ld
7019 DEPCC=$dep_cc
7020 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
7021 DEPAS=$as
7022 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
7023 X86ASM=$x86asmexe
7024 DEPX86ASM=$x86asmexe
7025 DEPX86ASMFLAGS=\$(X86ASMFLAGS)
7026 AR=$ar
7027 ARFLAGS=$arflags
7028 AR_O=$ar_o
7029 AR_CMD=$ar
7030 NM_CMD=$nm
7031 RANLIB=$ranlib
7032 STRIP=$strip
7033 STRIPTYPE=$striptype
7034 NVCC=$nvcc
7035 CP=cp -p
7036 LN_S=$ln_s
7037 CPPFLAGS=$CPPFLAGS
7038 CFLAGS=$CFLAGS
7039 CXXFLAGS=$CXXFLAGS
7040 OBJCFLAGS=$OBJCFLAGS
7041 ASFLAGS=$ASFLAGS
7042 NVCCFLAGS=$nvccflags
7043 AS_C=$AS_C
7044 AS_O=$AS_O
7045 OBJCC_C=$OBJCC_C
7046 OBJCC_E=$OBJCC_E
7047 OBJCC_O=$OBJCC_O
7048 CC_C=$CC_C
7049 CC_E=$CC_E
7050 CC_O=$CC_O
7051 CXX_C=$CXX_C
7052 CXX_O=$CXX_O
7053 NVCC_C=$NVCC_C
7054 NVCC_O=$NVCC_O
7055 LD_O=$LD_O
7056 X86ASM_O=$X86ASM_O
7057 LD_LIB=$LD_LIB
7058 LD_PATH=$LD_PATH
7059 DLLTOOL=$dlltool
7060 WINDRES=$windres
7061 DEPWINDRES=$dep_cc
7062 DOXYGEN=$doxygen
7063 LDFLAGS=$LDFLAGS
7064 LDEXEFLAGS=$LDEXEFLAGS
7065 LDSOFLAGS=$LDSOFLAGS
7066 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
7067 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
7068 X86ASMFLAGS=$X86ASMFLAGS
7069 BUILDSUF=$build_suffix
7070 PROGSSUF=$progs_suffix
7071 FULLNAME=$FULLNAME
7072 LIBPREF=$LIBPREF
7073 LIBSUF=$LIBSUF
7074 LIBNAME=$LIBNAME
7075 SLIBPREF=$SLIBPREF
7076 SLIBSUF=$SLIBSUF
7077 EXESUF=$EXESUF
7078 EXTRA_VERSION=$extra_version
7079 CCDEP=$CCDEP
7080 CXXDEP=$CXXDEP
7081 CCDEP_FLAGS=$CCDEP_FLAGS
7082 ASDEP=$ASDEP
7083 ASDEP_FLAGS=$ASDEP_FLAGS
7084 X86ASMDEP=$X86ASMDEP
7085 X86ASMDEP_FLAGS=$X86ASMDEP_FLAGS
7086 CC_DEPFLAGS=$CC_DEPFLAGS
7087 AS_DEPFLAGS=$AS_DEPFLAGS
7088 X86ASM_DEPFLAGS=$X86ASM_DEPFLAGS
7089 HOSTCC=$host_cc
7090 HOSTLD=$host_ld
7091 HOSTCFLAGS=$host_cflags
7092 HOSTCPPFLAGS=$host_cppflags
7093 HOSTEXESUF=$HOSTEXESUF
7094 HOSTLDFLAGS=$host_ldflags
7095 HOSTEXTRALIBS=$host_extralibs
7096 DEPHOSTCC=$host_cc
7097 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
7098 HOSTCCDEP=$HOSTCCDEP
7099 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
7100 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
7101 HOSTCC_C=$HOSTCC_C
7102 HOSTCC_O=$HOSTCC_O
7103 HOSTLD_O=$HOSTLD_O
7104 TARGET_EXEC=$target_exec $target_exec_args
7105 TARGET_PATH=$target_path
7106 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
7107 CFLAGS-ffplay=${sdl2_cflags}
7108 CFLAGS_HEADERS=$CFLAGS_HEADERS
7109 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
7110 EXTRALIBS=$extralibs
7111 COMPAT_OBJS=$compat_objs
7112 INSTALL=$install
7113 LIBTARGET=${LIBTARGET}
7114 SLIBNAME=${SLIBNAME}
7115 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
7116 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
7117 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
7118 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
7119 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
7120 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
7121 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
7122 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
7123 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
7124 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
7125 NOREDZONE_FLAGS=$noredzone_flags
7126 LIBFUZZER_PATH=$libfuzzer_path
7127 IGNORE_TESTS=$ignore_tests
7128 EOF
7129
7130 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> ffbuild/config.mak' $LIBRARY_LIST
7131
7132 for entry in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
7133     eval echo "EXTRALIBS-${entry}=\$${entry}_extralibs" >> ffbuild/config.mak
7134 done
7135
7136 cat > $TMPH <<EOF
7137 /* Automatically generated by configure - do not modify! */
7138 #ifndef FFMPEG_CONFIG_H
7139 #define FFMPEG_CONFIG_H
7140 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
7141 #define FFMPEG_LICENSE "$(c_escape $license)"
7142 #define CONFIG_THIS_YEAR 2018
7143 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
7144 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
7145 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
7146 #define av_restrict $restrict_keyword
7147 #define EXTERN_PREFIX "${extern_prefix}"
7148 #define EXTERN_ASM ${extern_prefix}
7149 #define BUILDSUF "$build_suffix"
7150 #define SLIBSUF "$SLIBSUF"
7151 #define HAVE_MMX2 HAVE_MMXEXT
7152 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
7153 EOF
7154
7155 test -n "$assert_level" &&
7156     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
7157
7158 test -n "$malloc_prefix" &&
7159     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
7160
7161 if enabled x86asm; then
7162     append config_files $TMPASM
7163     cat > $TMPASM <<EOF
7164 ; Automatically generated by configure - do not modify!
7165 EOF
7166 fi
7167
7168 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
7169
7170
7171 mkdir -p doc
7172 mkdir -p tests
7173 mkdir -p tests/api
7174 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
7175
7176 print_config ARCH_   "$config_files" $ARCH_LIST
7177 print_config HAVE_   "$config_files" $HAVE_LIST
7178 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
7179                                      $CONFIG_EXTRA      \
7180                                      $ALL_COMPONENTS    \
7181
7182 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
7183 echo "endif # FFMPEG_CONFIG_MAK" >> ffbuild/config.mak
7184
7185 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
7186 cp_if_changed $TMPH config.h
7187 touch ffbuild/.config
7188
7189 enabled x86asm && cp_if_changed $TMPASM config.asm
7190
7191 cat > $TMPH <<EOF
7192 /* Generated by ffmpeg configure */
7193 #ifndef AVUTIL_AVCONFIG_H
7194 #define AVUTIL_AVCONFIG_H
7195 EOF
7196
7197 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
7198
7199 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
7200
7201 cp_if_changed $TMPH libavutil/avconfig.h
7202
7203 full_filter_name(){
7204     sed -n "s/^extern AVFilter ff_\([avfsinkrc]\{2,5\}\)_$1;/\1_$1/p" $source_path/libavfilter/allfilters.c
7205 }
7206
7207 # generate the lists of enabled components
7208 print_enabled_components(){
7209     file=$1
7210     struct_name=$2
7211     name=$3
7212     shift 3
7213     echo "static const $struct_name * const $name[] = {" > $TMPH
7214     for c in $*; do
7215         if enabled $c; then
7216             case $name in
7217                 filter_list)
7218                     c=$(full_filter_name $(remove_suffix _filter $c))
7219                 ;;
7220                 indev_list)
7221                     c=$(add_suffix _demuxer $(remove_suffix _indev $c))
7222                 ;;
7223                 outdev_list)
7224                     c=$(add_suffix _muxer $(remove_suffix _outdev $c))
7225                 ;;
7226             esac
7227             printf "    &ff_%s,\n" $c >> $TMPH
7228         fi
7229     done
7230     if [ "$name" = "filter_list" ]; then
7231         for c in asrc_abuffer vsrc_buffer asink_abuffer vsink_buffer; do
7232             printf "    &ff_%s,\n" $c >> $TMPH
7233         done
7234     fi
7235     echo "    NULL };" >> $TMPH
7236     cp_if_changed $TMPH $file
7237 }
7238
7239 print_enabled_components libavfilter/filter_list.c AVFilter filter_list $FILTER_LIST
7240 print_enabled_components libavcodec/codec_list.c AVCodec codec_list $CODEC_LIST
7241 print_enabled_components libavcodec/parser_list.c AVCodecParser parser_list $PARSER_LIST
7242 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
7243 print_enabled_components libavformat/demuxer_list.c AVInputFormat demuxer_list $DEMUXER_LIST
7244 print_enabled_components libavformat/muxer_list.c AVOutputFormat muxer_list $MUXER_LIST
7245 print_enabled_components libavdevice/indev_list.c AVInputFormat indev_list $INDEV_LIST
7246 print_enabled_components libavdevice/outdev_list.c AVOutputFormat outdev_list $OUTDEV_LIST
7247 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
7248
7249 # Settings for pkg-config files
7250
7251 cat > $TMPH <<EOF
7252 # Automatically generated by configure - do not modify!
7253 shared=$shared
7254 build_suffix=$build_suffix
7255 prefix=$prefix
7256 libdir=$libdir
7257 incdir=$incdir
7258 rpath=$(enabled rpath && echo "-Wl,-rpath,\${libdir}")
7259 source_path=${source_path}
7260 LIBPREF=${LIBPREF}
7261 LIBSUF=${LIBSUF}
7262 extralibs_avutil="$avutil_extralibs"
7263 extralibs_avcodec="$avcodec_extralibs"
7264 extralibs_avformat="$avformat_extralibs"
7265 extralibs_avdevice="$avdevice_extralibs"
7266 extralibs_avfilter="$avfilter_extralibs"
7267 extralibs_avresample="$avresample_extralibs"
7268 extralibs_postproc="$postproc_extralibs"
7269 extralibs_swscale="$swscale_extralibs"
7270 extralibs_swresample="$swresample_extralibs"
7271 EOF
7272
7273 for lib in $LIBRARY_LIST; do
7274     lib_deps="$(eval echo \$${lib}_deps)"
7275     echo ${lib}_deps=\"$lib_deps\" >> $TMPH
7276 done
7277
7278 cp_if_changed $TMPH ffbuild/config.sh