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-libdavs2        enable AVS2 decoding via libdavs2 [no]
 230   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 231                            and libraw1394 [no]
 232   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
 233   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
 234   --enable-libfontconfig   enable libfontconfig, useful for drawtext filter [no]
 235   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
 236   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
 237   --enable-libgme          enable Game Music Emu via libgme [no]
 238   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 239   --enable-libiec61883     enable iec61883 via libiec61883 [no]
 240   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 241   --enable-libjack         enable JACK audio sound server [no]
 242   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
 243   --enable-liblensfun      enable lensfun lens correction [no]
 244   --enable-libmodplug      enable ModPlug via libmodplug [no]
 245   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 246   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 247   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 248   --enable-libopencv       enable video filtering via libopencv [no]
 249   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
 250   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 251   --enable-libopenmpt      enable decoding tracked files via libopenmpt [no]
 252   --enable-libopus         enable Opus de/encoding via libopus [no]
 253   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 254   --enable-librsvg         enable SVG rasterization via librsvg [no]
 255   --enable-librubberband   enable rubberband needed for rubberband filter [no]
 256   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 257   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 258   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
 259   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
 260   --enable-libsoxr         enable Include libsoxr resampling [no]
 261   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 262   --enable-libsrt          enable Haivision SRT protocol via libsrt [no]
 263   --enable-libssh          enable SFTP protocol via libssh [no]
 264   --enable-libtensorflow   enable TensorFlow as a DNN module backend
 265                            for DNN based filters like sr [no]
 266   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
 267   --enable-libtheora       enable Theora encoding via libtheora [no]
 268   --enable-libtls          enable LibreSSL (via libtls), needed for https support
 269                            if openssl, gnutls or mbedtls is not used [no]
 270   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 271   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 272   --enable-libvidstab      enable video stabilization using vid.stab [no]
 273   --enable-libvmaf         enable vmaf filter via libvmaf [no]
 274   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 275   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 276                            native implementation exists [no]
 277   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 278   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 279   --enable-libwebp         enable WebP encoding via libwebp [no]
 280   --enable-libx264         enable H.264 encoding via x264 [no]
 281   --enable-libx265         enable HEVC encoding via x265 [no]
 282   --enable-libxavs         enable AVS encoding via xavs [no]
 283   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
 284   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
 285   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
 286   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
 287   --enable-libxvid         enable Xvid encoding via xvidcore,
 288                            native MPEG-4/Xvid encoder exists [no]
 289   --enable-libxml2         enable XML parsing using the C library libxml2, needed
 290                            for dash demuxing support [no]
 291   --enable-libzimg         enable z.lib, needed for zscale filter [no]
 292   --enable-libzmq          enable message passing via libzmq [no]
 293   --enable-libzvbi         enable teletext support via libzvbi [no]
 294   --enable-lv2             enable LV2 audio filtering [no]
 295   --disable-lzma           disable lzma [autodetect]
 296   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
 297   --enable-libndi_newtek   enable Newteck NDI I/O support [no]
 298   --enable-mbedtls         enable mbedTLS, needed for https support
 299                            if openssl, gnutls or libtls is not used [no]
 300   --enable-mediacodec      enable Android MediaCodec support [no]
 301   --enable-libmysofa       enable libmysofa, needed for sofalizer filter [no]
 302   --enable-openal          enable OpenAL 1.1 capture support [no]
 303   --enable-opencl          enable OpenCL processing [no]
 304   --enable-opengl          enable OpenGL rendering [no]
 305   --enable-openssl         enable openssl, needed for https support
 306                            if gnutls, libtls or mbedtls is not used [no]
 307   --disable-sndio          disable sndio support [autodetect]
 308   --disable-schannel       disable SChannel SSP, needed for TLS support on
 309                            Windows if openssl and gnutls are not used [autodetect]
 310   --disable-sdl2           disable sdl2 [autodetect]
 311   --disable-securetransport disable Secure Transport, needed for TLS support
 312                            on OSX if openssl and gnutls are not used [autodetect]
 313   --enable-vapoursynth     enable VapourSynth demuxer [no]
 314   --disable-xlib           disable xlib [autodetect]
 315   --disable-zlib           disable zlib [autodetect]
 316
 317   The following libraries provide various hardware acceleration features:
 318   --disable-amf            disable AMF video encoding code [autodetect]
 319   --disable-audiotoolbox   disable Apple AudioToolbox code [autodetect]
 320   --enable-cuda-sdk        enable CUDA features that require the CUDA SDK [no]
 321   --disable-cuvid          disable Nvidia CUVID support [autodetect]
 322   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
 323   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
 324   --disable-ffnvcodec      disable dynamically linked Nvidia code [autodetect]
 325   --enable-libdrm          enable DRM code (Linux) [no]
 326   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
 327   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
 328   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
 329   --disable-nvdec          disable Nvidia video decoding acceleration (via hwaccel) [autodetect]
 330   --disable-nvenc          disable Nvidia video encoding code [autodetect]
 331   --enable-omx             enable OpenMAX IL code [no]
 332   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
 333   --enable-rkmpp           enable Rockchip Media Process Platform code [no]
 334   --disable-v4l2-m2m       disable V4L2 mem2mem code [autodetect]
 335   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
 336   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
 337   --disable-videotoolbox   disable VideoToolbox code [autodetect]
 338
 339 Toolchain options:
 340   --arch=ARCH              select architecture [$arch]
 341   --cpu=CPU                select the minimum required CPU (affects
 342                            instruction selection, may crash on older CPUs)
 343   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 344   --progs-suffix=SUFFIX    program name suffix []
 345   --enable-cross-compile   assume a cross-compiler is used
 346   --sysroot=PATH           root of cross-build tree
 347   --sysinclude=PATH        location of cross-build system headers
 348   --target-os=OS           compiler targets OS [$target_os]
 349   --target-exec=CMD        command to run executables on target
 350   --target-path=DIR        path to view of build directory on target
 351   --target-samples=DIR     path to samples directory on target
 352   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 353   --toolchain=NAME         set tool defaults according to NAME
 354                            (gcc-asan, clang-asan, gcc-msan, clang-msan,
 355                            gcc-tsan, clang-tsan, gcc-usan, clang-usan,
 356                            valgrind-massif, valgrind-memcheck,
 357                            msvc, icl, gcov, llvm-cov, hardened)
 358   --nm=NM                  use nm tool NM [$nm_default]
 359   --ar=AR                  use archive tool AR [$ar_default]
 360   --as=AS                  use assembler AS [$as_default]
 361   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
 362   --strip=STRIP            use strip tool STRIP [$strip_default]
 363   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 364   --x86asmexe=EXE          use nasm-compatible assembler EXE [$x86asmexe_default]
 365   --cc=CC                  use C compiler CC [$cc_default]
 366   --cxx=CXX                use C compiler CXX [$cxx_default]
 367   --objcc=OCC              use ObjC compiler OCC [$cc_default]
 368   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 369   --nvcc=NVCC              use Nvidia CUDA compiler NVCC [$nvcc_default]
 370   --ld=LD                  use linker LD [$ld_default]
 371   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 372   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 373   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 374   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
 375   --host-cc=HOSTCC         use host C compiler HOSTCC
 376   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 377   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 378   --host-ld=HOSTLD         use host linker HOSTLD
 379   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 380   --host-libs=HLIBS        use libs HLIBS when linking for host
 381   --host-os=OS             compiler host OS [$target_os]
 382   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 383   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 384   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
 385   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 386   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 387   --extra-ldsoflags=ELDFLAGS add ELDFLAGS to LDSOFLAGS [$LDSOFLAGS]
 388   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 389   --extra-version=STRING   version string suffix []
 390   --optflags=OPTFLAGS      override optimization-related compiler flags
 391   --nvccflags=NVCCFLAGS    override nvcc flags [$nvccflags_default]
 392   --build-suffix=SUFFIX    library name suffix []
 393   --enable-pic             build position-independent code
 394   --enable-thumb           compile for Thumb instruction set
 395   --enable-lto             use link-time optimization
 396   --env="ENV=override"     override the environment variables
 397
 398 Advanced options (experts only):
 399   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 400   --custom-allocator=NAME  use a supported custom allocator
 401   --disable-symver         disable symbol versioning
 402   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 403   --disable-safe-bitstream-reader
 404                            disable buffer boundary checking in bitreaders
 405                            (faster, but may crash)
 406   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
 407
 408 Optimization options (experts only):
 409   --disable-asm            disable all assembly optimizations
 410   --disable-altivec        disable AltiVec optimizations
 411   --disable-vsx            disable VSX optimizations
 412   --disable-power8         disable POWER8 optimizations
 413   --disable-amd3dnow       disable 3DNow! optimizations
 414   --disable-amd3dnowext    disable 3DNow! extended optimizations
 415   --disable-mmx            disable MMX optimizations
 416   --disable-mmxext         disable MMXEXT optimizations
 417   --disable-sse            disable SSE optimizations
 418   --disable-sse2           disable SSE2 optimizations
 419   --disable-sse3           disable SSE3 optimizations
 420   --disable-ssse3          disable SSSE3 optimizations
 421   --disable-sse4           disable SSE4 optimizations
 422   --disable-sse42          disable SSE4.2 optimizations
 423   --disable-avx            disable AVX optimizations
 424   --disable-xop            disable XOP optimizations
 425   --disable-fma3           disable FMA3 optimizations
 426   --disable-fma4           disable FMA4 optimizations
 427   --disable-avx2           disable AVX2 optimizations
 428   --disable-avx512         disable AVX-512 optimizations
 429   --disable-aesni          disable AESNI optimizations
 430   --disable-armv5te        disable armv5te optimizations
 431   --disable-armv6          disable armv6 optimizations
 432   --disable-armv6t2        disable armv6t2 optimizations
 433   --disable-vfp            disable VFP optimizations
 434   --disable-neon           disable NEON optimizations
 435   --disable-inline-asm     disable use of inline assembly
 436   --disable-x86asm         disable use of standalone x86 assembly
 437   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
 438   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 439   --disable-msa            disable MSA optimizations
 440   --disable-mipsfpu        disable floating point MIPS optimizations
 441   --disable-mmi            disable Loongson SIMD optimizations
 442   --disable-fast-unaligned consider unaligned accesses slow
 443
 444 Developer options (useful when working on FFmpeg itself):
 445   --disable-debug          disable debugging symbols
 446   --enable-debug=LEVEL     set the debug level [$debuglevel]
 447   --disable-optimizations  disable compiler optimizations
 448   --enable-extra-warnings  enable more compiler warnings
 449   --disable-stripping      disable stripping of executables and shared libraries
 450   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 451                            2 causes a slowdown at runtime.
 452   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 453   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 454                            leaks and errors, using the specified valgrind binary.
 455                            Cannot be combined with --target-exec
 456   --enable-ftrapv          Trap arithmetic overflows
 457   --samples=PATH           location of test samples for FATE, if not set use
 458                            \$FATE_SAMPLES at make invocation time.
 459   --enable-neon-clobber-test check NEON registers for clobbering (should be
 460                            used only for debugging purposes)
 461   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 462                            should be used only for debugging purposes)
 463   --enable-random          randomly enable/disable components
 464   --disable-random
 465   --enable-random=LIST     randomly enable/disable specific components or
 466   --disable-random=LIST    component groups. LIST is a comma-separated list
 467                            of NAME[:PROB] entries where NAME is a component
 468                            (group) and PROB the probability associated with
 469                            NAME (default 0.5).
 470   --random-seed=VALUE      seed value for --enable/disable-random
 471   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 472                            (only applies to --disable-optimizations builds)
 473   --enable-osfuzz          Enable building fuzzer tool
 474   --libfuzzer=PATH         path to libfuzzer
 475   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
 476                            in the name) of tests whose result is ignored
 477   --enable-linux-perf      enable Linux Performance Monitor API
 478
 479 NOTE: Object files are built at the place where configure is launched.
 480 EOF
 481   exit 0
 482 }
 483
 484 if test -t 1 && which tput >/dev/null 2>&1; then
 485     ncolors=$(tput colors)
 486     if test -n "$ncolors" && test $ncolors -ge 8; then
 487         bold_color=$(tput bold)
 488         warn_color=$(tput setaf 3)
 489         error_color=$(tput setaf 1)
 490         reset_color=$(tput sgr0)
 491     fi
 492     # 72 used instead of 80 since that's the default of pr
 493     ncols=$(tput cols)
 494 fi
 495 : ${ncols:=72}
 496
 497 log(){
 498     echo "$@" >> $logfile
 499 }
 500
 501 log_file(){
 502     log BEGIN $1
 503     pr -n -t $1 >> $logfile
 504     log END $1
 505 }
 506
 507 warn(){
 508     log "WARNING: $*"
 509     WARNINGS="${WARNINGS}WARNING: $*\n"
 510 }
 511
 512 die(){
 513     log "$@"
 514     echo "$error_color$bold_color$@$reset_color"
 515     cat <<EOF
 516
 517 If you think configure made a mistake, make sure you are using the latest
 518 version from Git.  If the latest version fails, report the problem to the
 519 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 520 EOF
 521     if disabled logging; then
 522         cat <<EOF
 523 Rerun configure with logging enabled (do not use --disable-logging), and
 524 include the log this produces with your report.
 525 EOF
 526     else
 527         cat <<EOF
 528 Include the log file "$logfile" produced by configure as this will help
 529 solve the problem.
 530 EOF
 531     fi
 532     exit 1
 533 }
 534
 535 # Avoid locale weirdness, besides we really just want to translate ASCII.
 536 toupper(){
 537     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 538 }
 539
 540 tolower(){
 541     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 542 }
 543
 544 c_escape(){
 545     echo "$*" | sed 's/["\\]/\\\0/g'
 546 }
 547
 548 sh_quote(){
 549     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 550     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 551     echo "$v"
 552 }
 553
 554 cleanws(){
 555     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
 556 }
 557
 558 filter(){
 559     pat=$1
 560     shift
 561     for v; do
 562         eval "case '$v' in $pat) printf '%s ' '$v' ;; esac"
 563     done
 564 }
 565
 566 filter_out(){
 567     pat=$1
 568     shift
 569     for v; do
 570         eval "case '$v' in $pat) ;; *) printf '%s ' '$v' ;; esac"
 571     done
 572 }
 573
 574 map(){
 575     m=$1
 576     shift
 577     for v; do eval $m; done
 578 }
 579
 580 add_suffix(){
 581     suffix=$1
 582     shift
 583     for v; do echo ${v}${suffix}; done
 584 }
 585
 586 remove_suffix(){
 587     suffix=$1
 588     shift
 589     for v; do echo ${v%$suffix}; done
 590 }
 591
 592 set_all(){
 593     value=$1
 594     shift
 595     for var in $*; do
 596         eval $var=$value
 597     done
 598 }
 599
 600 set_weak(){
 601     value=$1
 602     shift
 603     for var; do
 604         eval : \${$var:=$value}
 605     done
 606 }
 607
 608 sanitize_var_name(){
 609     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 610 }
 611
 612 set_sanitized(){
 613     var=$1
 614     shift
 615     eval $(sanitize_var_name "$var")='$*'
 616 }
 617
 618 get_sanitized(){
 619     eval echo \$$(sanitize_var_name "$1")
 620 }
 621
 622 pushvar(){
 623     for pvar in $*; do
 624         eval level=\${${pvar}_level:=0}
 625         eval ${pvar}_${level}="\$$pvar"
 626         eval ${pvar}_level=$(($level+1))
 627     done
 628 }
 629
 630 popvar(){
 631     for pvar in $*; do
 632         eval level=\${${pvar}_level:-0}
 633         test $level = 0 && continue
 634         eval level=$(($level-1))
 635         eval $pvar="\${${pvar}_${level}}"
 636         eval ${pvar}_level=$level
 637         eval unset ${pvar}_${level}
 638     done
 639 }
 640
 641 request(){
 642     for var in $*; do
 643         eval ${var}_requested=yes
 644         eval $var=
 645     done
 646 }
 647
 648 enable(){
 649     set_all yes $*
 650 }
 651
 652 disable(){
 653     set_all no $*
 654 }
 655
 656 enable_weak(){
 657     set_weak yes $*
 658 }
 659
 660 disable_weak(){
 661     set_weak no $*
 662 }
 663
 664 enable_sanitized(){
 665     for var; do
 666         enable $(sanitize_var_name $var)
 667     done
 668 }
 669
 670 disable_sanitized(){
 671     for var; do
 672         disable $(sanitize_var_name $var)
 673     done
 674 }
 675
 676 do_enable_deep(){
 677     for var; do
 678         enabled $var && continue
 679         eval sel="\$${var}_select"
 680         eval sgs="\$${var}_suggest"
 681         pushvar var sgs
 682         enable_deep $sel
 683         popvar sgs
 684         enable_deep_weak $sgs
 685         popvar var
 686     done
 687 }
 688
 689 enable_deep(){
 690     do_enable_deep $*
 691     enable $*
 692 }
 693
 694 enable_deep_weak(){
 695     for var; do
 696         disabled $var && continue
 697         pushvar var
 698         do_enable_deep $var
 699         popvar var
 700         enable_weak $var
 701     done
 702 }
 703
 704 requested(){
 705     test "${1#!}" = "$1" && op="=" || op="!="
 706     eval test "x\$${1#!}_requested" $op "xyes"
 707 }
 708
 709 enabled(){
 710     test "${1#!}" = "$1" && op="=" || op="!="
 711     eval test "x\$${1#!}" $op "xyes"
 712 }
 713
 714 disabled(){
 715     test "${1#!}" = "$1" && op="=" || op="!="
 716     eval test "x\$${1#!}" $op "xno"
 717 }
 718
 719 enabled_all(){
 720     for opt; do
 721         enabled $opt || return 1
 722     done
 723 }
 724
 725 disabled_all(){
 726     for opt; do
 727         disabled $opt || return 1
 728     done
 729 }
 730
 731 enabled_any(){
 732     for opt; do
 733         enabled $opt && return 0
 734     done
 735 }
 736
 737 disabled_any(){
 738     for opt; do
 739         disabled $opt && return 0
 740     done
 741     return 1
 742 }
 743
 744 set_default(){
 745     for opt; do
 746         eval : \${$opt:=\$${opt}_default}
 747     done
 748 }
 749
 750 is_in(){
 751     value=$1
 752     shift
 753     for var in $*; do
 754         [ $var = $value ] && return 0
 755     done
 756     return 1
 757 }
 758
 759 check_deps(){
 760     for cfg; do
 761         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 762         disabled ${cfg}_checking && continue
 763         enable ${cfg}_checking
 764
 765         eval dep_all="\$${cfg}_deps"
 766         eval dep_any="\$${cfg}_deps_any"
 767         eval dep_con="\$${cfg}_conflict"
 768         eval dep_sel="\$${cfg}_select"
 769         eval dep_sgs="\$${cfg}_suggest"
 770         eval dep_ifa="\$${cfg}_if"
 771         eval dep_ifn="\$${cfg}_if_any"
 772
 773         pushvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
 774         check_deps $dep_all $dep_any $dep_con $dep_sel $dep_sgs $dep_ifa $dep_ifn
 775         popvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
 776
 777         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 778         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 779         enabled_all  $dep_all || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not all dependencies are satisfied: $dep_all"; }
 780         enabled_any  $dep_any || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not any dependency is satisfied: $dep_any"; }
 781         disabled_all $dep_con || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some conflicting dependencies are unsatisfied: $dep_con"; }
 782         disabled_any $dep_sel && { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some selected dependency is unsatisfied: $dep_sel"; }
 783
 784         enabled $cfg && enable_deep_weak $dep_sel $dep_sgs
 785
 786         for dep in $dep_all $dep_any $dep_sel $dep_sgs; do
 787             # filter out library deps, these do not belong in extralibs
 788             is_in $dep $LIBRARY_LIST && continue
 789             enabled $dep && eval append ${cfg}_extralibs ${dep}_extralibs
 790         done
 791
 792         disable ${cfg}_checking
 793     done
 794 }
 795
 796 print_config(){
 797     pfx=$1
 798     files=$2
 799     shift 2
 800     map 'eval echo "$v \${$v:-no}"' "$@" |
 801     awk "BEGIN { split(\"$files\", files) }
 802         {
 803             c = \"$pfx\" toupper(\$1);
 804             v = \$2;
 805             sub(/yes/, 1, v);
 806             sub(/no/,  0, v);
 807             for (f in files) {
 808                 file = files[f];
 809                 if (file ~ /\\.h\$/) {
 810                     printf(\"#define %s %d\\n\", c, v) >>file;
 811                 } else if (file ~ /\\.asm\$/) {
 812                     printf(\"%%define %s %d\\n\", c, v) >>file;
 813                 } else if (file ~ /\\.mak\$/) {
 814                     n = -v ? \"\" : \"!\";
 815                     printf(\"%s%s=yes\\n\", n, c) >>file;
 816                 } else if (file ~ /\\.texi\$/) {
 817                     pre = -v ? \"\" : \"@c \";
 818                     yesno = \$2;
 819                     c2 = tolower(c);
 820                     gsub(/_/, \"-\", c2);
 821                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 822                 }
 823             }
 824         }"
 825 }
 826
 827 print_enabled(){
 828     suf=$1
 829     shift
 830     for v; do
 831         enabled $v && printf "%s\n" ${v%$suf}
 832     done
 833 }
 834
 835 append(){
 836     var=$1
 837     shift
 838     eval "$var=\"\$$var $*\""
 839 }
 840
 841 prepend(){
 842     var=$1
 843     shift
 844     eval "$var=\"$* \$$var\""
 845 }
 846
 847 unique(){
 848     var=$1
 849     uniq_list=""
 850     for tok in $(eval echo \$$var); do
 851         uniq_list="$(filter_out $tok $uniq_list) $tok"
 852     done
 853     eval "$var=\"${uniq_list}\""
 854 }
 855
 856 resolve(){
 857     var=$1
 858     tmpvar=
 859     for entry in $(eval echo \$$var); do
 860         tmpvar="$tmpvar $(eval echo \$${entry})"
 861     done
 862     eval "$var=\"${tmpvar}\""
 863 }
 864
 865 add_cppflags(){
 866     append CPPFLAGS "$@"
 867 }
 868
 869 add_cflags(){
 870     append CFLAGS $($cflags_filter "$@")
 871 }
 872
 873 add_cflags_headers(){
 874     append CFLAGS_HEADERS $($cflags_filter "$@")
 875 }
 876
 877 add_cxxflags(){
 878     append CXXFLAGS $($cflags_filter "$@")
 879 }
 880
 881 add_asflags(){
 882     append ASFLAGS $($asflags_filter "$@")
 883 }
 884
 885 add_objcflags(){
 886     append OBJCFLAGS $($objcflags_filter "$@")
 887 }
 888
 889 add_ldflags(){
 890     append LDFLAGS $($ldflags_filter "$@")
 891 }
 892
 893 add_ldexeflags(){
 894     append LDEXEFLAGS $($ldflags_filter "$@")
 895 }
 896
 897 add_ldsoflags(){
 898     append LDSOFLAGS $($ldflags_filter "$@")
 899 }
 900
 901 add_stripflags(){
 902     append ASMSTRIPFLAGS "$@"
 903 }
 904
 905 add_extralibs(){
 906     prepend extralibs $($ldflags_filter "$@")
 907 }
 908
 909 add_host_cppflags(){
 910     append host_cppflags "$@"
 911 }
 912
 913 add_host_cflags(){
 914     append host_cflags $($host_cflags_filter "$@")
 915 }
 916
 917 add_host_ldflags(){
 918     append host_ldflags $($host_ldflags_filter "$@")
 919 }
 920
 921 add_compat(){
 922     append compat_objs $1
 923     shift
 924     map 'add_cppflags -D$v' "$@"
 925 }
 926
 927 test_cmd(){
 928     log "$@"
 929     "$@" >> $logfile 2>&1
 930 }
 931
 932 test_stat(){
 933     log test_stat "$@"
 934     stat "$1" >> $logfile 2>&1
 935 }
 936
 937 cc_o(){
 938     eval printf '%s\\n' $CC_O
 939 }
 940
 941 cc_e(){
 942     eval printf '%s\\n' $CC_E
 943 }
 944
 945 test_cc(){
 946     log test_cc "$@"
 947     cat > $TMPC
 948     log_file $TMPC
 949     test_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 950 }
 951
 952 test_cxx(){
 953     log test_cxx "$@"
 954     cat > $TMPCPP
 955     log_file $TMPCPP
 956     test_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
 957 }
 958
 959 test_objcc(){
 960     log test_objcc "$@"
 961     cat > $TMPM
 962     log_file $TMPM
 963     test_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
 964 }
 965
 966 test_cpp(){
 967     log test_cpp "$@"
 968     cat > $TMPC
 969     log_file $TMPC
 970     test_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 971 }
 972
 973 as_o(){
 974     eval printf '%s\\n' $AS_O
 975 }
 976
 977 test_as(){
 978     log test_as "$@"
 979     cat > $TMPS
 980     log_file $TMPS
 981     test_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 982 }
 983
 984 x86asm_o(){
 985     eval printf '%s\\n' $X86ASM_O
 986 }
 987
 988 test_x86asm(){
 989     log test_x86asm "$@"
 990     echo "$1" > $TMPASM
 991     log_file $TMPASM
 992     shift
 993     test_cmd $x86asmexe $X86ASMFLAGS -Werror "$@" $(x86asm_o $TMPO) $TMPASM
 994 }
 995
 996 check_cmd(){
 997     log check_cmd "$@"
 998     cmd=$1
 999     disabled $cmd && return
1000     disable $cmd
1001     test_cmd $@ && enable $cmd
1002 }
1003
1004 check_as(){
1005     log check_as "$@"
1006     name=$1
1007     code=$2
1008     shift 2
1009     disable $name
1010     test_as $@ <<EOF && enable $name
1011 $code
1012 EOF
1013 }
1014
1015 check_inline_asm(){
1016     log check_inline_asm "$@"
1017     name="$1"
1018     code="$2"
1019     shift 2
1020     disable $name
1021     test_cc "$@" <<EOF && enable $name
1022 void foo(void){ __asm__ volatile($code); }
1023 EOF
1024 }
1025
1026 check_inline_asm_flags(){
1027     log check_inline_asm_flags "$@"
1028     name="$1"
1029     code="$2"
1030     flags=''
1031     shift 2
1032     while [ "$1" != "" ]; do
1033       append flags $1
1034       shift
1035     done;
1036     disable $name
1037     cat > $TMPC <<EOF
1038 void foo(void){ __asm__ volatile($code); }
1039 EOF
1040     log_file $TMPC
1041     test_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
1042     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
1043 }
1044
1045 check_insn(){
1046     log check_insn "$@"
1047     check_inline_asm ${1}_inline "\"$2\""
1048     check_as ${1}_external "$2"
1049 }
1050
1051 check_x86asm(){
1052     log check_x86asm "$@"
1053     name=$1
1054     shift
1055     disable $name
1056     test_x86asm "$@" && enable $name
1057 }
1058
1059 ld_o(){
1060     eval printf '%s\\n' $LD_O
1061 }
1062
1063 test_ld(){
1064     log test_ld "$@"
1065     type=$1
1066     shift 1
1067     flags=$(filter_out '-l*|*.so' $@)
1068     libs=$(filter '-l*|*.so' $@)
1069     test_$type $($cflags_filter $flags) || return
1070     flags=$($ldflags_filter $flags)
1071     libs=$($ldflags_filter $libs)
1072     test_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
1073 }
1074
1075 check_ld(){
1076     log check_ld "$@"
1077     type=$1
1078     name=$2
1079     shift 2
1080     disable $name
1081     test_ld $type $@ && enable $name
1082 }
1083
1084 print_include(){
1085     hdr=$1
1086     test "${hdr%.h}" = "${hdr}" &&
1087         echo "#include $hdr"    ||
1088         echo "#include <$hdr>"
1089 }
1090
1091 test_code(){
1092     log test_code "$@"
1093     check=$1
1094     headers=$2
1095     code=$3
1096     shift 3
1097     {
1098         for hdr in $headers; do
1099             print_include $hdr
1100         done
1101         echo "int main(void) { $code; return 0; }"
1102     } | test_$check "$@"
1103 }
1104
1105 check_cppflags(){
1106     log check_cppflags "$@"
1107     test_cpp "$@" <<EOF && append CPPFLAGS "$@"
1108 #include <stdlib.h>
1109 EOF
1110 }
1111
1112 test_cflags(){
1113     log test_cflags "$@"
1114     set -- $($cflags_filter "$@")
1115     test_cc "$@" <<EOF
1116 int x;
1117 EOF
1118 }
1119
1120 check_cflags(){
1121     log check_cflags "$@"
1122     test_cflags "$@" && add_cflags "$@"
1123 }
1124
1125 check_cxxflags(){
1126     log check_cxxflags "$@"
1127     set -- $($cflags_filter "$@")
1128     test_cxx "$@" <<EOF && append CXXFLAGS "$@"
1129 int x;
1130 EOF
1131 }
1132
1133 test_objcflags(){
1134     log test_objcflags "$@"
1135     set -- $($objcflags_filter "$@")
1136     test_objcc "$@" <<EOF
1137 int x;
1138 EOF
1139 }
1140
1141 check_objcflags(){
1142     log check_objcflags "$@"
1143     test_objcflags "$@" && add_objcflags "$@"
1144 }
1145
1146 test_ldflags(){
1147     log test_ldflags "$@"
1148     set -- $($ldflags_filter "$@")
1149     test_ld "cc" "$@" <<EOF
1150 int main(void){ return 0; }
1151 EOF
1152 }
1153
1154 check_ldflags(){
1155     log check_ldflags "$@"
1156     test_ldflags "$@" && add_ldflags "$@"
1157 }
1158
1159 test_stripflags(){
1160     log test_stripflags "$@"
1161     # call test_cc to get a fresh TMPO
1162     test_cc <<EOF
1163 int main(void) { return 0; }
1164 EOF
1165     test_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1166 }
1167
1168 check_stripflags(){
1169     log check_stripflags "$@"
1170     test_stripflags "$@" && add_stripflags "$@"
1171 }
1172
1173 check_header(){
1174     log check_header "$@"
1175     headers=$1
1176     shift
1177     disable_sanitized $headers
1178     {
1179         for hdr in $headers; do
1180             print_include $hdr
1181         done
1182         echo "int x;"
1183     } | test_cpp "$@" && enable_sanitized $headers
1184 }
1185
1186 check_header_objcc(){
1187     log check_header_objcc "$@"
1188     rm -f -- "$TMPO"
1189     header=$1
1190     shift
1191     disable_sanitized $header
1192     {
1193        echo "#include <$header>"
1194        echo "int main(void) { return 0; }"
1195     } | test_objcc && test_stat "$TMPO" && enable_sanitized $header
1196 }
1197
1198 check_apple_framework(){
1199     log check_apple_framework "$@"
1200     framework="$1"
1201     name="$(tolower $framework)"
1202     header="${framework}/${framework}.h"
1203     disable $name
1204     check_header_objcc $header &&
1205         enable $name && eval ${name}_extralibs='"-framework $framework"'
1206 }
1207
1208 check_func(){
1209     log check_func "$@"
1210     func=$1
1211     shift
1212     disable $func
1213     test_ld "cc" "$@" <<EOF && enable $func
1214 extern int $func();
1215 int main(void){ $func(); }
1216 EOF
1217 }
1218
1219 check_complexfunc(){
1220     log check_complexfunc "$@"
1221     func=$1
1222     narg=$2
1223     shift 2
1224     test $narg = 2 && args="f, g" || args="f * I"
1225     disable $func
1226     test_ld "cc" "$@" <<EOF && enable $func
1227 #include <complex.h>
1228 #include <math.h>
1229 float foo(complex float f, complex float g) { return $func($args); }
1230 int main(void){ return (int) foo; }
1231 EOF
1232 }
1233
1234 check_mathfunc(){
1235     log check_mathfunc "$@"
1236     func=$1
1237     narg=$2
1238     shift 2
1239     test $narg = 2 && args="f, g" || args="f"
1240     disable $func
1241     test_ld "cc" "$@" <<EOF && enable $func
1242 #include <math.h>
1243 float foo(float f, float g) { return $func($args); }
1244 int main(void){ return (int) foo; }
1245 EOF
1246 }
1247
1248 check_func_headers(){
1249     log check_func_headers "$@"
1250     headers=$1
1251     funcs=$2
1252     shift 2
1253     {
1254         for hdr in $headers; do
1255             print_include $hdr
1256         done
1257         echo "#include <stdint.h>"
1258         for func in $funcs; do
1259             echo "long check_$func(void) { return (long) $func; }"
1260         done
1261         echo "int main(void) { int ret = 0;"
1262         # LTO could optimize out the test functions without this
1263         for func in $funcs; do
1264             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1265         done
1266         echo "return ret; }"
1267     } | test_ld "cc" "$@" && enable $funcs && enable_sanitized $headers
1268 }
1269
1270 check_class_headers_cpp(){
1271     log check_class_headers_cpp "$@"
1272     headers=$1
1273     classes=$2
1274     shift 2
1275     {
1276         for hdr in $headers; do
1277             echo "#include <$hdr>"
1278         done
1279         echo "int main(void) { "
1280         i=1
1281         for class in $classes; do
1282             echo "$class obj$i;"
1283             i=$(expr $i + 1)
1284         done
1285         echo "return 0; }"
1286     } | test_ld "cxx" "$@" && enable $funcs && enable_sanitized $headers
1287 }
1288
1289 test_cpp_condition(){
1290     log test_cpp_condition "$@"
1291     header=$1
1292     condition=$2
1293     shift 2
1294     test_cpp "$@" <<EOF
1295 #include <$header>
1296 #if !($condition)
1297 #error "unsatisfied condition: $condition"
1298 #endif
1299 EOF
1300 }
1301
1302 check_cpp_condition(){
1303     log check_cpp_condition "$@"
1304     name=$1
1305     shift 1
1306     disable $name
1307     test_cpp_condition "$@" && enable $name
1308 }
1309
1310 test_cflags_cc(){
1311     log test_cflags_cc "$@"
1312     flags=$1
1313     header=$2
1314     condition=$3
1315     shift 3
1316     set -- $($cflags_filter "$flags")
1317     test_cc "$@" <<EOF
1318 #include <$header>
1319 #if !($condition)
1320 #error "unsatisfied condition: $condition"
1321 #endif
1322 EOF
1323 }
1324
1325 check_lib(){
1326     log check_lib "$@"
1327     name="$1"
1328     headers="$2"
1329     funcs="$3"
1330     shift 3
1331     disable $name
1332     check_func_headers "$headers" "$funcs" "$@" &&
1333         enable $name && eval ${name}_extralibs="\$@"
1334 }
1335
1336 check_lib_cpp(){
1337     log check_lib_cpp "$@"
1338     name="$1"
1339     headers="$2"
1340     classes="$3"
1341     shift 3
1342     disable $name
1343     check_class_headers_cpp "$headers" "$classes" "$@" &&
1344         enable $name && eval ${name}_extralibs="\$@"
1345 }
1346
1347 test_pkg_config(){
1348     log test_pkg_config "$@"
1349     name="$1"
1350     pkg_version="$2"
1351     pkg="${2%% *}"
1352     headers="$3"
1353     funcs="$4"
1354     shift 4
1355     disable $name
1356     test_cmd $pkg_config --exists --print-errors $pkg_version || return
1357     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1358     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1359     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1360         enable $name &&
1361         set_sanitized "${name}_cflags"    $pkg_cflags &&
1362         set_sanitized "${name}_extralibs" $pkg_libs
1363 }
1364
1365 check_pkg_config(){
1366     log check_pkg_config "$@"
1367     name="$1"
1368     test_pkg_config "$@" &&
1369         eval add_cflags \$${name}_cflags
1370 }
1371
1372 test_exec(){
1373     test_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1374 }
1375
1376 check_exec_crash(){
1377     log check_exec_crash "$@"
1378     code=$(cat)
1379
1380     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1381     # are safe but may not be available everywhere.  Thus we use
1382     # raise(SIGTERM) instead.  The check is run in a subshell so we
1383     # can redirect the "Terminated" message from the shell.  SIGBUS
1384     # is not defined by standard C so it is used conditionally.
1385
1386     (test_exec "$@") >> $logfile 2>&1 <<EOF
1387 #include <signal.h>
1388 static void sighandler(int sig){
1389     raise(SIGTERM);
1390 }
1391 int foo(void){
1392     $code
1393 }
1394 int (*func_ptr)(void) = foo;
1395 int main(void){
1396     signal(SIGILL, sighandler);
1397     signal(SIGFPE, sighandler);
1398     signal(SIGSEGV, sighandler);
1399 #ifdef SIGBUS
1400     signal(SIGBUS, sighandler);
1401 #endif
1402     return func_ptr();
1403 }
1404 EOF
1405 }
1406
1407 check_type(){
1408     log check_type "$@"
1409     headers=$1
1410     type=$2
1411     shift 2
1412     disable_sanitized "$type"
1413     test_code cc "$headers" "$type v" "$@" && enable_sanitized "$type"
1414 }
1415
1416 check_struct(){
1417     log check_struct "$@"
1418     headers=$1
1419     struct=$2
1420     member=$3
1421     shift 3
1422     disable_sanitized "${struct}_${member}"
1423     test_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1424         enable_sanitized "${struct}_${member}"
1425 }
1426
1427 check_builtin(){
1428     log check_builtin "$@"
1429     name=$1
1430     headers=$2
1431     builtin=$3
1432     shift 3
1433     disable "$name"
1434     test_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1435 }
1436
1437 check_compile_assert(){
1438     log check_compile_assert "$@"
1439     name=$1
1440     headers=$2
1441     condition=$3
1442     shift 3
1443     disable "$name"
1444     test_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1445 }
1446
1447 check_cc(){
1448     log check_cc "$@"
1449     name=$1
1450     shift
1451     disable "$name"
1452     test_code cc "$@" && enable "$name"
1453 }
1454
1455 require(){
1456     log require "$@"
1457     name_version="$1"
1458     name="${1%% *}"
1459     shift
1460     check_lib $name "$@" || die "ERROR: $name_version not found"
1461 }
1462
1463 require_cc(){
1464     log require_cc "$@"
1465     name="$1"
1466     shift
1467     test_code cc "$@" || die "ERROR: $name failed"
1468 }
1469
1470 require_cpp(){
1471     name="$1"
1472     headers="$2"
1473     classes="$3"
1474     shift 3
1475     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1476 }
1477
1478 require_header(){
1479     log require_header "$@"
1480     headers="$1"
1481     check_header "$@" || die "ERROR: $headers not found"
1482 }
1483
1484 require_cpp_condition(){
1485     log require_cpp_condition "$@"
1486     condition="$2"
1487     test_cpp_condition "$@" || die "ERROR: $condition not satisfied"
1488 }
1489
1490 require_pkg_config(){
1491     log require_pkg_config "$@"
1492     pkg_version="$2"
1493     check_pkg_config "$@" || die "ERROR: $pkg_version not found using pkg-config$pkg_config_fail_message"
1494 }
1495
1496 hostcc_e(){
1497     eval printf '%s\\n' $HOSTCC_E
1498 }
1499
1500 hostcc_o(){
1501     eval printf '%s\\n' $HOSTCC_O
1502 }
1503
1504 test_host_cc(){
1505     log test_host_cc "$@"
1506     cat > $TMPC
1507     log_file $TMPC
1508     test_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1509 }
1510
1511 test_host_cpp(){
1512     log test_host_cpp "$@"
1513     cat > $TMPC
1514     log_file $TMPC
1515     test_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1516 }
1517
1518 check_host_cppflags(){
1519     log check_host_cppflags "$@"
1520     test_host_cpp "$@" <<EOF && append host_cppflags "$@"
1521 #include <stdlib.h>
1522 EOF
1523 }
1524
1525 check_host_cflags(){
1526     log check_host_cflags "$@"
1527     set -- $($host_cflags_filter "$@")
1528     test_host_cc "$@" <<EOF && append host_cflags "$@"
1529 int x;
1530 EOF
1531 }
1532
1533 test_host_cpp_condition(){
1534     log test_host_cpp_condition "$@"
1535     header=$1
1536     condition=$2
1537     shift 2
1538     test_host_cpp "$@" <<EOF
1539 #include <$header>
1540 #if !($condition)
1541 #error "unsatisfied condition: $condition"
1542 #endif
1543 EOF
1544 }
1545
1546 check_host_cpp_condition(){
1547     log check_host_cpp_condition "$@"
1548     name=$1
1549     shift 1
1550     disable $name
1551     test_host_cpp_condition "$@" && enable $name
1552 }
1553
1554 cp_if_changed(){
1555     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1556     mkdir -p "$(dirname $2)"
1557     cp -f "$1" "$2"
1558 }
1559
1560 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1561 # system-dependent things.
1562
1563 AVCODEC_COMPONENTS="
1564     bsfs
1565     decoders
1566     encoders
1567     hwaccels
1568     parsers
1569 "
1570
1571 AVDEVICE_COMPONENTS="
1572     indevs
1573     outdevs
1574 "
1575
1576 AVFILTER_COMPONENTS="
1577     filters
1578 "
1579
1580 AVFORMAT_COMPONENTS="
1581     demuxers
1582     muxers
1583     protocols
1584 "
1585
1586 COMPONENT_LIST="
1587     $AVCODEC_COMPONENTS
1588     $AVDEVICE_COMPONENTS
1589     $AVFILTER_COMPONENTS
1590     $AVFORMAT_COMPONENTS
1591 "
1592
1593 EXAMPLE_LIST="
1594     avio_dir_cmd_example
1595     avio_reading_example
1596     decode_audio_example
1597     decode_video_example
1598     demuxing_decoding_example
1599     encode_audio_example
1600     encode_video_example
1601     extract_mvs_example
1602     filter_audio_example
1603     filtering_audio_example
1604     filtering_video_example
1605     http_multiclient_example
1606     hw_decode_example
1607     metadata_example
1608     muxing_example
1609     qsvdec_example
1610     remuxing_example
1611     resampling_audio_example
1612     scaling_video_example
1613     transcode_aac_example
1614     transcoding_example
1615     vaapi_encode_example
1616     vaapi_transcode_example
1617 "
1618
1619 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1620     alsa
1621     appkit
1622     avfoundation
1623     bzlib
1624     coreimage
1625     iconv
1626     libxcb
1627     libxcb_shm
1628     libxcb_shape
1629     libxcb_xfixes
1630     lzma
1631     schannel
1632     sdl2
1633     securetransport
1634     sndio
1635     xlib
1636     zlib
1637 "
1638
1639 EXTERNAL_LIBRARY_GPL_LIST="
1640     avisynth
1641     frei0r
1642     libcdio
1643     libdavs2
1644     librubberband
1645     libvidstab
1646     libx264
1647     libx265
1648     libxavs
1649     libxvid
1650 "
1651
1652 EXTERNAL_LIBRARY_NONFREE_LIST="
1653     decklink
1654     libndi_newtek
1655     libfdk_aac
1656     openssl
1657     libtls
1658 "
1659
1660 EXTERNAL_LIBRARY_VERSION3_LIST="
1661     gmp
1662     liblensfun
1663     libopencore_amrnb
1664     libopencore_amrwb
1665     libvmaf
1666     libvo_amrwbenc
1667     mbedtls
1668     rkmpp
1669 "
1670
1671 EXTERNAL_LIBRARY_GPLV3_LIST="
1672     libsmbclient
1673 "
1674
1675 EXTERNAL_LIBRARY_LIST="
1676     $EXTERNAL_LIBRARY_GPL_LIST
1677     $EXTERNAL_LIBRARY_NONFREE_LIST
1678     $EXTERNAL_LIBRARY_VERSION3_LIST
1679     $EXTERNAL_LIBRARY_GPLV3_LIST
1680     chromaprint
1681     gcrypt
1682     gnutls
1683     jni
1684     ladspa
1685     libaom
1686     libass
1687     libbluray
1688     libbs2b
1689     libcaca
1690     libcelt
1691     libcodec2
1692     libdc1394
1693     libdrm
1694     libflite
1695     libfontconfig
1696     libfreetype
1697     libfribidi
1698     libgme
1699     libgsm
1700     libiec61883
1701     libilbc
1702     libjack
1703     libkvazaar
1704     libmodplug
1705     libmp3lame
1706     libmysofa
1707     libopencv
1708     libopenh264
1709     libopenjpeg
1710     libopenmpt
1711     libopus
1712     libpulse
1713     librsvg
1714     librtmp
1715     libshine
1716     libsmbclient
1717     libsnappy
1718     libsoxr
1719     libspeex
1720     libsrt
1721     libssh
1722     libtensorflow
1723     libtesseract
1724     libtheora
1725     libtwolame
1726     libv4l2
1727     libvorbis
1728     libvpx
1729     libwavpack
1730     libwebp
1731     libxml2
1732     libzimg
1733     libzmq
1734     libzvbi
1735     lv2
1736     mediacodec
1737     openal
1738     opengl
1739     vapoursynth
1740 "
1741
1742 HWACCEL_AUTODETECT_LIBRARY_LIST="
1743     amf
1744     audiotoolbox
1745     crystalhd
1746     cuda
1747     cuvid
1748     d3d11va
1749     dxva2
1750     ffnvcodec
1751     nvdec
1752     nvenc
1753     vaapi
1754     vdpau
1755     videotoolbox
1756     v4l2_m2m
1757     xvmc
1758 "
1759
1760 # catchall list of things that require external libs to link
1761 EXTRALIBS_LIST="
1762     cpu_init
1763     cws2fws
1764 "
1765
1766 HWACCEL_LIBRARY_NONFREE_LIST="
1767     cuda_sdk
1768     libnpp
1769 "
1770
1771 HWACCEL_LIBRARY_LIST="
1772     $HWACCEL_LIBRARY_NONFREE_LIST
1773     libmfx
1774     mmal
1775     omx
1776     opencl
1777 "
1778
1779 DOCUMENT_LIST="
1780     doc
1781     htmlpages
1782     manpages
1783     podpages
1784     txtpages
1785 "
1786
1787 FEATURE_LIST="
1788     ftrapv
1789     gray
1790     hardcoded_tables
1791     omx_rpi
1792     runtime_cpudetect
1793     safe_bitstream_reader
1794     shared
1795     small
1796     static
1797     swscale_alpha
1798 "
1799
1800 LIBRARY_LIST="
1801     avcodec
1802     avdevice
1803     avfilter
1804     avformat
1805     avresample
1806     avutil
1807     postproc
1808     swresample
1809     swscale
1810 "
1811
1812 LICENSE_LIST="
1813     gpl
1814     nonfree
1815     version3
1816 "
1817
1818 PROGRAM_LIST="
1819     ffplay
1820     ffprobe
1821     ffmpeg
1822 "
1823
1824 SUBSYSTEM_LIST="
1825     dct
1826     dwt
1827     error_resilience
1828     faan
1829     fast_unaligned
1830     fft
1831     lsp
1832     lzo
1833     mdct
1834     pixelutils
1835     network
1836     rdft
1837 "
1838
1839 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1840 CONFIG_LIST="
1841     $DOCUMENT_LIST
1842     $EXAMPLE_LIST
1843     $EXTERNAL_LIBRARY_LIST
1844     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1845     $HWACCEL_LIBRARY_LIST
1846     $HWACCEL_AUTODETECT_LIBRARY_LIST
1847     $FEATURE_LIST
1848     $LICENSE_LIST
1849     $LIBRARY_LIST
1850     $PROGRAM_LIST
1851     $SUBSYSTEM_LIST
1852     autodetect
1853     fontconfig
1854     linux_perf
1855     memory_poisoning
1856     neon_clobber_test
1857     ossfuzz
1858     pic
1859     thumb
1860     valgrind_backtrace
1861     xmm_clobber_test
1862     $COMPONENT_LIST
1863 "
1864
1865 THREADS_LIST="
1866     pthreads
1867     os2threads
1868     w32threads
1869 "
1870
1871 ATOMICS_LIST="
1872     atomics_gcc
1873     atomics_suncc
1874     atomics_win32
1875 "
1876
1877 AUTODETECT_LIBS="
1878     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1879     $HWACCEL_AUTODETECT_LIBRARY_LIST
1880     $THREADS_LIST
1881 "
1882
1883 ARCH_LIST="
1884     aarch64
1885     alpha
1886     arm
1887     avr32
1888     avr32_ap
1889     avr32_uc
1890     bfin
1891     ia64
1892     m68k
1893     mips
1894     mips64
1895     parisc
1896     ppc
1897     ppc64
1898     s390
1899     sh4
1900     sparc
1901     sparc64
1902     tilegx
1903     tilepro
1904     tomi
1905     x86
1906     x86_32
1907     x86_64
1908 "
1909
1910 ARCH_EXT_LIST_ARM="
1911     armv5te
1912     armv6
1913     armv6t2
1914     armv8
1915     neon
1916     vfp
1917     vfpv3
1918     setend
1919 "
1920
1921 ARCH_EXT_LIST_MIPS="
1922     mipsfpu
1923     mips32r2
1924     mips32r5
1925     mips64r2
1926     mips32r6
1927     mips64r6
1928     mipsdsp
1929     mipsdspr2
1930     msa
1931 "
1932
1933 ARCH_EXT_LIST_LOONGSON="
1934     loongson2
1935     loongson3
1936     mmi
1937 "
1938
1939 ARCH_EXT_LIST_X86_SIMD="
1940     aesni
1941     amd3dnow
1942     amd3dnowext
1943     avx
1944     avx2
1945     avx512
1946     fma3
1947     fma4
1948     mmx
1949     mmxext
1950     sse
1951     sse2
1952     sse3
1953     sse4
1954     sse42
1955     ssse3
1956     xop
1957 "
1958
1959 ARCH_EXT_LIST_PPC="
1960     altivec
1961     dcbzl
1962     ldbrx
1963     power8
1964     ppc4xx
1965     vsx
1966 "
1967
1968 ARCH_EXT_LIST_X86="
1969     $ARCH_EXT_LIST_X86_SIMD
1970     cpunop
1971     i686
1972 "
1973
1974 ARCH_EXT_LIST="
1975     $ARCH_EXT_LIST_ARM
1976     $ARCH_EXT_LIST_PPC
1977     $ARCH_EXT_LIST_X86
1978     $ARCH_EXT_LIST_MIPS
1979     $ARCH_EXT_LIST_LOONGSON
1980 "
1981
1982 ARCH_FEATURES="
1983     aligned_stack
1984     fast_64bit
1985     fast_clz
1986     fast_cmov
1987     local_aligned
1988     simd_align_16
1989     simd_align_32
1990     simd_align_64
1991 "
1992
1993 BUILTIN_LIST="
1994     atomic_cas_ptr
1995     machine_rw_barrier
1996     MemoryBarrier
1997     mm_empty
1998     rdtsc
1999     sem_timedwait
2000     sync_val_compare_and_swap
2001 "
2002 HAVE_LIST_CMDLINE="
2003     inline_asm
2004     symver
2005     x86asm
2006 "
2007
2008 HAVE_LIST_PUB="
2009     bigendian
2010     fast_unaligned
2011 "
2012
2013 HEADERS_LIST="
2014     arpa_inet_h
2015     asm_types_h
2016     cdio_paranoia_h
2017     cdio_paranoia_paranoia_h
2018     cuda_h
2019     dispatch_dispatch_h
2020     dev_bktr_ioctl_bt848_h
2021     dev_bktr_ioctl_meteor_h
2022     dev_ic_bt8xx_h
2023     dev_video_bktr_ioctl_bt848_h
2024     dev_video_meteor_ioctl_meteor_h
2025     direct_h
2026     dirent_h
2027     dxgidebug_h
2028     dxva_h
2029     ES2_gl_h
2030     gsm_h
2031     io_h
2032     linux_perf_event_h
2033     machine_ioctl_bt848_h
2034     machine_ioctl_meteor_h
2035     malloc_h
2036     opencv2_core_core_c_h
2037     OpenGL_gl3_h
2038     poll_h
2039     sys_param_h
2040     sys_resource_h
2041     sys_select_h
2042     sys_soundcard_h
2043     sys_time_h
2044     sys_un_h
2045     sys_videoio_h
2046     termios_h
2047     udplite_h
2048     unistd_h
2049     valgrind_valgrind_h
2050     windows_h
2051     winsock2_h
2052 "
2053
2054 INTRINSICS_LIST="
2055     intrinsics_neon
2056 "
2057
2058 COMPLEX_FUNCS="
2059     cabs
2060     cexp
2061 "
2062
2063 MATH_FUNCS="
2064     atanf
2065     atan2f
2066     cbrt
2067     cbrtf
2068     copysign
2069     cosf
2070     erf
2071     exp2
2072     exp2f
2073     expf
2074     hypot
2075     isfinite
2076     isinf
2077     isnan
2078     ldexpf
2079     llrint
2080     llrintf
2081     log2
2082     log2f
2083     log10f
2084     lrint
2085     lrintf
2086     powf
2087     rint
2088     round
2089     roundf
2090     sinf
2091     trunc
2092     truncf
2093 "
2094
2095 SYSTEM_FEATURES="
2096     dos_paths
2097     libc_msvcrt
2098     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2099     section_data_rel_ro
2100     threads
2101     uwp
2102     winrt
2103 "
2104
2105 SYSTEM_FUNCS="
2106     access
2107     aligned_malloc
2108     arc4random
2109     clock_gettime
2110     closesocket
2111     CommandLineToArgvW
2112     fcntl
2113     getaddrinfo
2114     gethrtime
2115     getopt
2116     GetProcessAffinityMask
2117     GetProcessMemoryInfo
2118     GetProcessTimes
2119     getrusage
2120     GetSystemTimeAsFileTime
2121     gettimeofday
2122     glob
2123     glXGetProcAddress
2124     gmtime_r
2125     inet_aton
2126     isatty
2127     kbhit
2128     localtime_r
2129     lstat
2130     lzo1x_999_compress
2131     mach_absolute_time
2132     MapViewOfFile
2133     memalign
2134     mkstemp
2135     mmap
2136     mprotect
2137     nanosleep
2138     PeekNamedPipe
2139     posix_memalign
2140     pthread_cancel
2141     sched_getaffinity
2142     SecItemImport
2143     SetConsoleTextAttribute
2144     SetConsoleCtrlHandler
2145     setmode
2146     setrlimit
2147     Sleep
2148     strerror_r
2149     sysconf
2150     sysctl
2151     usleep
2152     UTGetOSTypeFromString
2153     VirtualAlloc
2154     wglGetProcAddress
2155 "
2156
2157 SYSTEM_LIBRARIES="
2158     bcrypt
2159     vaapi_drm
2160     vaapi_x11
2161     vdpau_x11
2162 "
2163
2164 TOOLCHAIN_FEATURES="
2165     as_arch_directive
2166     as_dn_directive
2167     as_fpu_directive
2168     as_func
2169     as_object_arch
2170     asm_mod_q
2171     blocks_extension
2172     ebp_available
2173     ebx_available
2174     gnu_as
2175     gnu_windres
2176     ibm_asm
2177     inline_asm_direct_symbol_refs
2178     inline_asm_labels
2179     inline_asm_nonlocal_labels
2180     pragma_deprecated
2181     rsync_contimeout
2182     symver_asm_label
2183     symver_gnu_asm
2184     vfp_args
2185     xform_asm
2186     xmm_clobbers
2187 "
2188
2189 TYPES_LIST="
2190     kCMVideoCodecType_HEVC
2191     socklen_t
2192     struct_addrinfo
2193     struct_group_source_req
2194     struct_ip_mreq_source
2195     struct_ipv6_mreq
2196     struct_msghdr_msg_flags
2197     struct_pollfd
2198     struct_rusage_ru_maxrss
2199     struct_sctp_event_subscribe
2200     struct_sockaddr_in6
2201     struct_sockaddr_sa_len
2202     struct_sockaddr_storage
2203     struct_stat_st_mtim_tv_nsec
2204     struct_v4l2_frmivalenum_discrete
2205 "
2206
2207 HAVE_LIST="
2208     $ARCH_EXT_LIST
2209     $(add_suffix _external $ARCH_EXT_LIST)
2210     $(add_suffix _inline   $ARCH_EXT_LIST)
2211     $ARCH_FEATURES
2212     $BUILTIN_LIST
2213     $COMPLEX_FUNCS
2214     $HAVE_LIST_CMDLINE
2215     $HAVE_LIST_PUB
2216     $HEADERS_LIST
2217     $INTRINSICS_LIST
2218     $MATH_FUNCS
2219     $SYSTEM_FEATURES
2220     $SYSTEM_FUNCS
2221     $SYSTEM_LIBRARIES
2222     $THREADS_LIST
2223     $TOOLCHAIN_FEATURES
2224     $TYPES_LIST
2225     makeinfo
2226     makeinfo_html
2227     opencl_d3d11
2228     opencl_drm_arm
2229     opencl_drm_beignet
2230     opencl_dxva2
2231     opencl_vaapi_beignet
2232     opencl_vaapi_intel_media
2233     perl
2234     pod2man
2235     texi2html
2236 "
2237
2238 # options emitted with CONFIG_ prefix but not available on the command line
2239 CONFIG_EXTRA="
2240     aandcttables
2241     ac3dsp
2242     adts_header
2243     audio_frame_queue
2244     audiodsp
2245     blockdsp
2246     bswapdsp
2247     cabac
2248     cbs
2249     cbs_h264
2250     cbs_h265
2251     cbs_mpeg2
2252     cbs_vp9
2253     dirac_parse
2254     dnn
2255     dvprofile
2256     exif
2257     faandct
2258     faanidct
2259     fdctdsp
2260     flacdsp
2261     fmtconvert
2262     frame_thread_encoder
2263     g722dsp
2264     golomb
2265     gplv3
2266     h263dsp
2267     h264chroma
2268     h264dsp
2269     h264parse
2270     h264pred
2271     h264qpel
2272     hevcparse
2273     hpeldsp
2274     huffman
2275     huffyuvdsp
2276     huffyuvencdsp
2277     idctdsp
2278     iirfilter
2279     mdct15
2280     intrax8
2281     iso_media
2282     ividsp
2283     jpegtables
2284     lgplv3
2285     libx262
2286     llauddsp
2287     llviddsp
2288     llvidencdsp
2289     lpc
2290     lzf
2291     me_cmp
2292     mpeg_er
2293     mpegaudio
2294     mpegaudiodsp
2295     mpegaudioheader
2296     mpegvideo
2297     mpegvideoenc
2298     mss34dsp
2299     pixblockdsp
2300     qpeldsp
2301     qsv
2302     qsvdec
2303     qsvenc
2304     qsvvpp
2305     rangecoder
2306     riffdec
2307     riffenc
2308     rtpdec
2309     rtpenc_chain
2310     rv34dsp
2311     sinewin
2312     snappy
2313     srtp
2314     startcode
2315     texturedsp
2316     texturedspenc
2317     tpeldsp
2318     vaapi_1
2319     vaapi_encode
2320     vc1dsp
2321     videodsp
2322     vp3dsp
2323     vp56dsp
2324     vp8dsp
2325     wma_freqs
2326     wmv2dsp
2327 "
2328
2329 CMDLINE_SELECT="
2330     $ARCH_EXT_LIST
2331     $CONFIG_LIST
2332     $HAVE_LIST_CMDLINE
2333     $THREADS_LIST
2334     asm
2335     cross_compile
2336     debug
2337     extra_warnings
2338     logging
2339     lto
2340     optimizations
2341     rpath
2342     stripping
2343 "
2344
2345 PATHS_LIST="
2346     bindir
2347     datadir
2348     docdir
2349     incdir
2350     libdir
2351     mandir
2352     pkgconfigdir
2353     prefix
2354     shlibdir
2355     install_name_dir
2356 "
2357
2358 CMDLINE_SET="
2359     $PATHS_LIST
2360     ar
2361     arch
2362     as
2363     assert_level
2364     build_suffix
2365     cc
2366     objcc
2367     cpu
2368     cross_prefix
2369     custom_allocator
2370     cxx
2371     dep_cc
2372     doxygen
2373     env
2374     extra_version
2375     gas
2376     host_cc
2377     host_cflags
2378     host_extralibs
2379     host_ld
2380     host_ldflags
2381     host_os
2382     ignore_tests
2383     install
2384     ld
2385     ln_s
2386     logfile
2387     malloc_prefix
2388     nm
2389     optflags
2390     nvcc
2391     nvccflags
2392     pkg_config
2393     pkg_config_flags
2394     progs_suffix
2395     random_seed
2396     ranlib
2397     samples
2398     strip
2399     sws_max_filter_size
2400     sysinclude
2401     sysroot
2402     target_exec
2403     target_os
2404     target_path
2405     target_samples
2406     tempprefix
2407     toolchain
2408     valgrind
2409     x86asmexe
2410 "
2411
2412 CMDLINE_APPEND="
2413     extra_cflags
2414     extra_cxxflags
2415     extra_objcflags
2416     host_cppflags
2417 "
2418
2419 # code dependency declarations
2420
2421 # architecture extensions
2422
2423 armv5te_deps="arm"
2424 armv6_deps="arm"
2425 armv6t2_deps="arm"
2426 armv8_deps="aarch64"
2427 neon_deps_any="aarch64 arm"
2428 intrinsics_neon_deps="neon"
2429 vfp_deps_any="aarch64 arm"
2430 vfpv3_deps="vfp"
2431 setend_deps="arm"
2432
2433 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2434
2435 altivec_deps="ppc"
2436 dcbzl_deps="ppc"
2437 ldbrx_deps="ppc"
2438 ppc4xx_deps="ppc"
2439 vsx_deps="altivec"
2440 power8_deps="vsx"
2441
2442 loongson2_deps="mips"
2443 loongson3_deps="mips"
2444 mips32r2_deps="mips"
2445 mips32r5_deps="mips"
2446 mips32r6_deps="mips"
2447 mips64r2_deps="mips"
2448 mips64r6_deps="mips"
2449 mipsfpu_deps="mips"
2450 mipsdsp_deps="mips"
2451 mipsdspr2_deps="mips"
2452 mmi_deps="mips"
2453 msa_deps="mipsfpu"
2454
2455 cpunop_deps="i686"
2456 x86_64_select="i686"
2457 x86_64_suggest="fast_cmov"
2458
2459 amd3dnow_deps="mmx"
2460 amd3dnowext_deps="amd3dnow"
2461 i686_deps="x86"
2462 mmx_deps="x86"
2463 mmxext_deps="mmx"
2464 sse_deps="mmxext"
2465 sse2_deps="sse"
2466 sse3_deps="sse2"
2467 ssse3_deps="sse3"
2468 sse4_deps="ssse3"
2469 sse42_deps="sse4"
2470 aesni_deps="sse42"
2471 avx_deps="sse42"
2472 xop_deps="avx"
2473 fma3_deps="avx"
2474 fma4_deps="avx"
2475 avx2_deps="avx"
2476 avx512_deps="avx2"
2477
2478 mmx_external_deps="x86asm"
2479 mmx_inline_deps="inline_asm x86"
2480 mmx_suggest="mmx_external mmx_inline"
2481
2482 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2483     eval dep=\$${ext}_deps
2484     eval ${ext}_external_deps='"${dep}_external"'
2485     eval ${ext}_inline_deps='"${dep}_inline"'
2486     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2487 done
2488
2489 aligned_stack_if_any="aarch64 ppc x86"
2490 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2491 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2492 fast_unaligned_if_any="aarch64 ppc x86"
2493 simd_align_16_if_any="altivec neon sse"
2494 simd_align_32_if_any="avx"
2495 simd_align_64_if_any="avx512"
2496
2497 # system capabilities
2498 linux_perf_deps="linux_perf_event_h"
2499 symver_if_any="symver_asm_label symver_gnu_asm"
2500 valgrind_backtrace_conflict="optimizations"
2501 valgrind_backtrace_deps="valgrind_valgrind_h"
2502
2503 # threading support
2504 atomics_gcc_if="sync_val_compare_and_swap"
2505 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2506 atomics_win32_if="MemoryBarrier"
2507 atomics_native_if_any="$ATOMICS_LIST"
2508 w32threads_deps="atomics_native"
2509 threads_if_any="$THREADS_LIST"
2510
2511 # subsystems
2512 cbs_h264_select="cbs golomb"
2513 cbs_h265_select="cbs golomb"
2514 cbs_mpeg2_select="cbs"
2515 cbs_vp9_select="cbs"
2516 dct_select="rdft"
2517 dirac_parse_select="golomb"
2518 dnn_suggest="libtensorflow"
2519 error_resilience_select="me_cmp"
2520 faandct_deps="faan"
2521 faandct_select="fdctdsp"
2522 faanidct_deps="faan"
2523 faanidct_select="idctdsp"
2524 h264dsp_select="startcode"
2525 hevcparse_select="golomb"
2526 frame_thread_encoder_deps="encoders threads"
2527 intrax8_select="blockdsp idctdsp"
2528 mdct_select="fft"
2529 mdct15_select="fft"
2530 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2531 mpeg_er_select="error_resilience"
2532 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2533 mpegaudiodsp_select="dct"
2534 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2535 mpegvideoenc_select="aandcttables me_cmp mpegvideo pixblockdsp qpeldsp"
2536 vc1dsp_select="h264chroma qpeldsp startcode"
2537 rdft_select="fft"
2538
2539 # decoders / encoders
2540 aac_decoder_select="adts_header mdct15 mdct sinewin"
2541 aac_fixed_decoder_select="adts_header mdct sinewin"
2542 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2543 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2544 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2545 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2546 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2547 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2548 adpcm_g722_decoder_select="g722dsp"
2549 adpcm_g722_encoder_select="g722dsp"
2550 aic_decoder_select="golomb idctdsp"
2551 alac_encoder_select="lpc"
2552 als_decoder_select="bswapdsp"
2553 amrnb_decoder_select="lsp"
2554 amrwb_decoder_select="lsp"
2555 amv_decoder_select="sp5x_decoder exif"
2556 amv_encoder_select="jpegtables mpegvideoenc"
2557 ape_decoder_select="bswapdsp llauddsp"
2558 apng_decoder_deps="zlib"
2559 apng_encoder_deps="zlib"
2560 apng_encoder_select="llvidencdsp"
2561 aptx_decoder_select="audio_frame_queue"
2562 aptx_encoder_select="audio_frame_queue"
2563 aptx_hd_decoder_select="audio_frame_queue"
2564 aptx_hd_encoder_select="audio_frame_queue"
2565 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2566 asv1_encoder_select="aandcttables bswapdsp fdctdsp pixblockdsp"
2567 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2568 asv2_encoder_select="aandcttables bswapdsp fdctdsp pixblockdsp"
2569 atrac1_decoder_select="mdct sinewin"
2570 atrac3_decoder_select="mdct"
2571 atrac3p_decoder_select="mdct sinewin"
2572 atrac9_decoder_select="mdct"
2573 avrn_decoder_select="exif jpegtables"
2574 bink_decoder_select="blockdsp hpeldsp"
2575 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2576 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2577 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2578 clearvideo_decoder_select="idctdsp"
2579 cllc_decoder_select="bswapdsp"
2580 comfortnoise_encoder_select="lpc"
2581 cook_decoder_select="audiodsp mdct sinewin"
2582 cscd_decoder_select="lzo"
2583 cscd_decoder_suggest="zlib"
2584 dca_decoder_select="mdct"
2585 dds_decoder_select="texturedsp"
2586 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2587 dnxhd_decoder_select="blockdsp idctdsp"
2588 dnxhd_encoder_select="blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2589 dolby_e_decoder_select="mdct"
2590 dvvideo_decoder_select="dvprofile idctdsp"
2591 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2592 dxa_decoder_deps="zlib"
2593 dxv_decoder_select="lzf texturedsp"
2594 eac3_decoder_select="ac3_decoder"
2595 eac3_encoder_select="ac3_encoder"
2596 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2597 eatgq_decoder_select="aandcttables"
2598 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2599 exr_decoder_deps="zlib"
2600 ffv1_decoder_select="rangecoder"
2601 ffv1_encoder_select="rangecoder"
2602 ffvhuff_decoder_select="huffyuv_decoder"
2603 ffvhuff_encoder_select="huffyuv_encoder"
2604 fic_decoder_select="golomb"
2605 flac_decoder_select="flacdsp"
2606 flac_encoder_select="bswapdsp flacdsp lpc"
2607 flashsv2_decoder_deps="zlib"
2608 flashsv2_encoder_deps="zlib"
2609 flashsv_decoder_deps="zlib"
2610 flashsv_encoder_deps="zlib"
2611 flv_decoder_select="h263_decoder"
2612 flv_encoder_select="h263_encoder"
2613 fourxm_decoder_select="blockdsp bswapdsp"
2614 fraps_decoder_select="bswapdsp huffman"
2615 g2m_decoder_deps="zlib"
2616 g2m_decoder_select="blockdsp idctdsp jpegtables"
2617 g729_decoder_select="audiodsp"
2618 h261_decoder_select="mpegvideo"
2619 h261_encoder_select="mpegvideoenc"
2620 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2621 h263_encoder_select="h263dsp mpegvideoenc"
2622 h263i_decoder_select="h263_decoder"
2623 h263p_decoder_select="h263_decoder"
2624 h263p_encoder_select="h263_encoder"
2625 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2626 h264_decoder_suggest="error_resilience"
2627 hap_decoder_select="snappy texturedsp"
2628 hap_encoder_deps="libsnappy"
2629 hap_encoder_select="texturedspenc"
2630 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2631 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2632 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2633 iac_decoder_select="imc_decoder"
2634 imc_decoder_select="bswapdsp fft mdct sinewin"
2635 indeo3_decoder_select="hpeldsp"
2636 indeo4_decoder_select="ividsp"
2637 indeo5_decoder_select="ividsp"
2638 interplay_video_decoder_select="hpeldsp"
2639 jpegls_decoder_select="mjpeg_decoder"
2640 jv_decoder_select="blockdsp"
2641 lagarith_decoder_select="llviddsp"
2642 ljpeg_encoder_select="idctdsp jpegtables mpegvideoenc"
2643 magicyuv_decoder_select="llviddsp"
2644 magicyuv_encoder_select="llvidencdsp"
2645 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2646 metasound_decoder_select="lsp mdct sinewin"
2647 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2648 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2649 mjpeg_encoder_select="jpegtables mpegvideoenc"
2650 mjpegb_decoder_select="mjpeg_decoder"
2651 mlp_decoder_select="mlp_parser"
2652 mlp_encoder_select="lpc"
2653 motionpixels_decoder_select="bswapdsp"
2654 mp1_decoder_select="mpegaudio"
2655 mp1float_decoder_select="mpegaudio"
2656 mp2_decoder_select="mpegaudio"
2657 mp2float_decoder_select="mpegaudio"
2658 mp3_decoder_select="mpegaudio"
2659 mp3adu_decoder_select="mpegaudio"
2660 mp3adufloat_decoder_select="mpegaudio"
2661 mp3float_decoder_select="mpegaudio"
2662 mp3on4_decoder_select="mpegaudio"
2663 mp3on4float_decoder_select="mpegaudio"
2664 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2665 mpc8_decoder_select="mpegaudiodsp"
2666 mpegvideo_decoder_select="mpegvideo"
2667 mpeg1video_decoder_select="mpegvideo"
2668 mpeg1video_encoder_select="mpegvideoenc h263dsp"
2669 mpeg2video_decoder_select="mpegvideo"
2670 mpeg2video_encoder_select="mpegvideoenc h263dsp"
2671 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2672 mpeg4_encoder_select="h263_encoder"
2673 msa1_decoder_select="mss34dsp"
2674 mscc_decoder_deps="zlib"
2675 msmpeg4v1_decoder_select="h263_decoder"
2676 msmpeg4v2_decoder_select="h263_decoder"
2677 msmpeg4v2_encoder_select="h263_encoder"
2678 msmpeg4v3_decoder_select="h263_decoder"
2679 msmpeg4v3_encoder_select="h263_encoder"
2680 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2681 mts2_decoder_select="mss34dsp"
2682 mxpeg_decoder_select="mjpeg_decoder"
2683 nellymoser_decoder_select="mdct sinewin"
2684 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2685 nuv_decoder_select="idctdsp lzo"
2686 on2avc_decoder_select="mdct"
2687 opus_decoder_deps="swresample"
2688 opus_decoder_select="mdct15"
2689 opus_encoder_select="audio_frame_queue mdct15"
2690 png_decoder_deps="zlib"
2691 png_encoder_deps="zlib"
2692 png_encoder_select="llvidencdsp"
2693 prores_decoder_select="blockdsp idctdsp"
2694 prores_encoder_select="fdctdsp"
2695 qcelp_decoder_select="lsp"
2696 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2697 ra_144_decoder_select="audiodsp"
2698 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2699 ralf_decoder_select="golomb"
2700 rawvideo_decoder_select="bswapdsp"
2701 rscc_decoder_deps="zlib"
2702 rtjpeg_decoder_select="me_cmp"
2703 rv10_decoder_select="h263_decoder"
2704 rv10_encoder_select="h263_encoder"
2705 rv20_decoder_select="h263_decoder"
2706 rv20_encoder_select="h263_encoder"
2707 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2708 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2709 screenpresso_decoder_deps="zlib"
2710 shorten_decoder_select="bswapdsp"
2711 sipr_decoder_select="lsp"
2712 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2713 snow_encoder_select="dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2714 sonic_decoder_select="golomb rangecoder"
2715 sonic_encoder_select="golomb rangecoder"
2716 sonic_ls_encoder_select="golomb rangecoder"
2717 sp5x_decoder_select="mjpeg_decoder"
2718 srgc_decoder_deps="zlib"
2719 svq1_decoder_select="hpeldsp"
2720 svq1_encoder_select="hpeldsp me_cmp mpegvideoenc"
2721 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2722 svq3_decoder_suggest="zlib"
2723 tak_decoder_select="audiodsp"
2724 tdsc_decoder_deps="zlib"
2725 tdsc_decoder_select="mjpeg_decoder"
2726 theora_decoder_select="vp3_decoder"
2727 thp_decoder_select="mjpeg_decoder"
2728 tiff_decoder_suggest="zlib lzma"
2729 tiff_encoder_suggest="zlib"
2730 truehd_decoder_select="mlp_parser"
2731 truehd_encoder_select="lpc"
2732 truemotion2_decoder_select="bswapdsp"
2733 truespeech_decoder_select="bswapdsp"
2734 tscc_decoder_deps="zlib"
2735 twinvq_decoder_select="mdct lsp sinewin"
2736 txd_decoder_select="texturedsp"
2737 utvideo_decoder_select="bswapdsp llviddsp"
2738 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2739 vble_decoder_select="llviddsp"
2740 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2741 vc1image_decoder_select="vc1_decoder"
2742 vorbis_decoder_select="mdct"
2743 vorbis_encoder_select="audio_frame_queue mdct"
2744 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2745 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2746 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2747 vp6a_decoder_select="vp6_decoder"
2748 vp6f_decoder_select="vp6_decoder"
2749 vp7_decoder_select="h264pred videodsp vp8dsp"
2750 vp8_decoder_select="h264pred videodsp vp8dsp"
2751 vp9_decoder_select="videodsp vp9_parser vp9_superframe_split_bsf"
2752 webp_decoder_select="vp8_decoder exif"
2753 wmalossless_decoder_select="llauddsp"
2754 wmapro_decoder_select="mdct sinewin wma_freqs"
2755 wmav1_decoder_select="mdct sinewin wma_freqs"
2756 wmav1_encoder_select="mdct sinewin wma_freqs"
2757 wmav2_decoder_select="mdct sinewin wma_freqs"
2758 wmav2_encoder_select="mdct sinewin wma_freqs"
2759 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2760 wmv1_decoder_select="h263_decoder"
2761 wmv1_encoder_select="h263_encoder"
2762 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2763 wmv2_encoder_select="h263_encoder wmv2dsp"
2764 wmv3_decoder_select="vc1_decoder"
2765 wmv3image_decoder_select="wmv3_decoder"
2766 xma1_decoder_select="wmapro_decoder"
2767 xma2_decoder_select="wmapro_decoder"
2768 zerocodec_decoder_deps="zlib"
2769 zlib_decoder_deps="zlib"
2770 zlib_encoder_deps="zlib"
2771 zmbv_decoder_deps="zlib"
2772 zmbv_encoder_deps="zlib"
2773
2774 # hardware accelerators
2775 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2776 cuda_deps="ffnvcodec"
2777 cuvid_deps="ffnvcodec"
2778 d3d11va_deps="dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2779 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32 user32"
2780 ffnvcodec_deps_any="libdl LoadLibrary"
2781 nvdec_deps="ffnvcodec"
2782 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2783 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2784 xvmc_deps="X11_extensions_XvMClib_h"
2785
2786 h263_vaapi_hwaccel_deps="vaapi"
2787 h263_vaapi_hwaccel_select="h263_decoder"
2788 h263_videotoolbox_hwaccel_deps="videotoolbox"
2789 h263_videotoolbox_hwaccel_select="h263_decoder"
2790 h264_d3d11va_hwaccel_deps="d3d11va"
2791 h264_d3d11va_hwaccel_select="h264_decoder"
2792 h264_d3d11va2_hwaccel_deps="d3d11va"
2793 h264_d3d11va2_hwaccel_select="h264_decoder"
2794 h264_dxva2_hwaccel_deps="dxva2"
2795 h264_dxva2_hwaccel_select="h264_decoder"
2796 h264_nvdec_hwaccel_deps="nvdec"
2797 h264_nvdec_hwaccel_select="h264_decoder"
2798 h264_vaapi_hwaccel_deps="vaapi"
2799 h264_vaapi_hwaccel_select="h264_decoder"
2800 h264_vdpau_hwaccel_deps="vdpau"
2801 h264_vdpau_hwaccel_select="h264_decoder"
2802 h264_videotoolbox_hwaccel_deps="videotoolbox"
2803 h264_videotoolbox_hwaccel_select="h264_decoder"
2804 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2805 hevc_d3d11va_hwaccel_select="hevc_decoder"
2806 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2807 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2808 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2809 hevc_dxva2_hwaccel_select="hevc_decoder"
2810 hevc_nvdec_hwaccel_deps="nvdec"
2811 hevc_nvdec_hwaccel_select="hevc_decoder"
2812 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2813 hevc_vaapi_hwaccel_select="hevc_decoder"
2814 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2815 hevc_vdpau_hwaccel_select="hevc_decoder"
2816 hevc_videotoolbox_hwaccel_deps="videotoolbox"
2817 hevc_videotoolbox_hwaccel_select="hevc_decoder"
2818 mjpeg_nvdec_hwaccel_deps="nvdec"
2819 mjpeg_nvdec_hwaccel_select="mjpeg_decoder"
2820 mjpeg_vaapi_hwaccel_deps="vaapi"
2821 mjpeg_vaapi_hwaccel_select="mjpeg_decoder"
2822 mpeg_xvmc_hwaccel_deps="xvmc"
2823 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2824 mpeg1_nvdec_hwaccel_deps="nvdec"
2825 mpeg1_nvdec_hwaccel_select="mpeg1video_decoder"
2826 mpeg1_vdpau_hwaccel_deps="vdpau"
2827 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2828 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2829 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2830 mpeg1_xvmc_hwaccel_deps="xvmc"
2831 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2832 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2833 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2834 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2835 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2836 mpeg2_dxva2_hwaccel_deps="dxva2"
2837 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2838 mpeg2_nvdec_hwaccel_deps="nvdec"
2839 mpeg2_nvdec_hwaccel_select="mpeg2video_decoder"
2840 mpeg2_vaapi_hwaccel_deps="vaapi"
2841 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2842 mpeg2_vdpau_hwaccel_deps="vdpau"
2843 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2844 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2845 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2846 mpeg2_xvmc_hwaccel_deps="xvmc"
2847 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2848 mpeg4_nvdec_hwaccel_deps="nvdec"
2849 mpeg4_nvdec_hwaccel_select="mpeg4_decoder"
2850 mpeg4_vaapi_hwaccel_deps="vaapi"
2851 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2852 mpeg4_vdpau_hwaccel_deps="vdpau"
2853 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2854 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2855 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2856 vc1_d3d11va_hwaccel_deps="d3d11va"
2857 vc1_d3d11va_hwaccel_select="vc1_decoder"
2858 vc1_d3d11va2_hwaccel_deps="d3d11va"
2859 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2860 vc1_dxva2_hwaccel_deps="dxva2"
2861 vc1_dxva2_hwaccel_select="vc1_decoder"
2862 vc1_nvdec_hwaccel_deps="nvdec"
2863 vc1_nvdec_hwaccel_select="vc1_decoder"
2864 vc1_vaapi_hwaccel_deps="vaapi"
2865 vc1_vaapi_hwaccel_select="vc1_decoder"
2866 vc1_vdpau_hwaccel_deps="vdpau"
2867 vc1_vdpau_hwaccel_select="vc1_decoder"
2868 vp8_nvdec_hwaccel_deps="nvdec"
2869 vp8_nvdec_hwaccel_select="vp8_decoder"
2870 vp8_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferVP8"
2871 vp8_vaapi_hwaccel_select="vp8_decoder"
2872 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2873 vp9_d3d11va_hwaccel_select="vp9_decoder"
2874 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2875 vp9_d3d11va2_hwaccel_select="vp9_decoder"
2876 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2877 vp9_dxva2_hwaccel_select="vp9_decoder"
2878 vp9_nvdec_hwaccel_deps="nvdec"
2879 vp9_nvdec_hwaccel_select="vp9_decoder"
2880 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2881 vp9_vaapi_hwaccel_select="vp9_decoder"
2882 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2883 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2884 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2885 wmv3_nvdec_hwaccel_select="vc1_nvdec_hwaccel"
2886 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2887 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2888
2889 # hardware-accelerated codecs
2890 omx_deps="libdl pthreads"
2891 omx_rpi_select="omx"
2892 qsv_deps="libmfx"
2893 qsvdec_select="qsv"
2894 qsvenc_select="qsv"
2895 qsvvpp_select="qsv"
2896 vaapi_encode_deps="vaapi"
2897 v4l2_m2m_deps="linux_videodev2_h sem_timedwait"
2898
2899 hwupload_cuda_filter_deps="ffnvcodec"
2900 scale_npp_filter_deps="ffnvcodec libnpp"
2901 scale_cuda_filter_deps="cuda_sdk"
2902 thumbnail_cuda_filter_deps="cuda_sdk"
2903
2904 amf_deps_any="libdl LoadLibrary"
2905 nvenc_deps="ffnvcodec"
2906 nvenc_deps_any="libdl LoadLibrary"
2907 nvenc_encoder_deps="nvenc"
2908
2909 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
2910 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
2911 h264_amf_encoder_deps="amf"
2912 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2913 h264_cuvid_decoder_deps="cuvid"
2914 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2915 h264_mediacodec_decoder_deps="mediacodec"
2916 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2917 h264_mmal_decoder_deps="mmal"
2918 h264_nvenc_encoder_deps="nvenc"
2919 h264_omx_encoder_deps="omx"
2920 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec"
2921 h264_qsv_encoder_select="qsvenc"
2922 h264_rkmpp_decoder_deps="rkmpp"
2923 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
2924 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2925 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
2926 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
2927 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
2928 hevc_amf_encoder_deps="amf"
2929 hevc_cuvid_decoder_deps="cuvid"
2930 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
2931 hevc_mediacodec_decoder_deps="mediacodec"
2932 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2933 hevc_nvenc_encoder_deps="nvenc"
2934 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec"
2935 hevc_qsv_encoder_select="hevcparse qsvenc"
2936 hevc_rkmpp_decoder_deps="rkmpp"
2937 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
2938 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2939 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
2940 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
2941 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
2942 mjpeg_cuvid_decoder_deps="cuvid"
2943 mjpeg_qsv_encoder_deps="libmfx"
2944 mjpeg_qsv_encoder_select="qsvenc"
2945 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2946 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2947 mpeg1_cuvid_decoder_deps="cuvid"
2948 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
2949 mpeg2_crystalhd_decoder_select="crystalhd"
2950 mpeg2_cuvid_decoder_deps="cuvid"
2951 mpeg2_mmal_decoder_deps="mmal"
2952 mpeg2_mediacodec_decoder_deps="mediacodec"
2953 mpeg2_qsv_decoder_select="qsvdec mpegvideo_parser"
2954 mpeg2_qsv_encoder_select="qsvenc"
2955 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2956 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
2957 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
2958 mpeg4_crystalhd_decoder_select="crystalhd"
2959 mpeg4_cuvid_decoder_deps="cuvid"
2960 mpeg4_mediacodec_decoder_deps="mediacodec"
2961 mpeg4_mmal_decoder_deps="mmal"
2962 mpeg4_omx_encoder_deps="omx"
2963 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2964 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2965 msmpeg4_crystalhd_decoder_select="crystalhd"
2966 nvenc_h264_encoder_select="h264_nvenc_encoder"
2967 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2968 vc1_crystalhd_decoder_select="crystalhd"
2969 vc1_cuvid_decoder_deps="cuvid"
2970 vc1_mmal_decoder_deps="mmal"
2971 vc1_qsv_decoder_select="qsvdec vc1_parser"
2972 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
2973 vp8_cuvid_decoder_deps="cuvid"
2974 vp8_mediacodec_decoder_deps="mediacodec"
2975 vp8_qsv_decoder_select="qsvdec vp8_parser"
2976 vp8_rkmpp_decoder_deps="rkmpp"
2977 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2978 vp8_vaapi_encoder_select="vaapi_encode"
2979 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
2980 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
2981 vp9_cuvid_decoder_deps="cuvid"
2982 vp9_mediacodec_decoder_deps="mediacodec"
2983 vp9_rkmpp_decoder_deps="rkmpp"
2984 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
2985 vp9_vaapi_encoder_select="vaapi_encode"
2986 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
2987 wmv3_crystalhd_decoder_select="crystalhd"
2988
2989 # parsers
2990 aac_parser_select="adts_header"
2991 h264_parser_select="golomb h264dsp h264parse"
2992 hevc_parser_select="hevcparse"
2993 mpegaudio_parser_select="mpegaudioheader"
2994 mpegvideo_parser_select="mpegvideo"
2995 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2996 vc1_parser_select="vc1dsp"
2997
2998 # bitstream_filters
2999 aac_adtstoasc_bsf_select="adts_header"
3000 eac3_core_bsf_select="ac3_parser"
3001 filter_units_bsf_select="cbs"
3002 h264_metadata_bsf_deps="const_nan"
3003 h264_metadata_bsf_select="cbs_h264"
3004 h264_redundant_pps_bsf_select="cbs_h264"
3005 hevc_metadata_bsf_select="cbs_h265"
3006 mjpeg2jpeg_bsf_select="jpegtables"
3007 mpeg2_metadata_bsf_select="cbs_mpeg2"
3008 trace_headers_bsf_select="cbs"
3009 vp9_metadata_bsf_select="cbs_vp9"
3010
3011 # external libraries
3012 aac_at_decoder_deps="audiotoolbox"
3013 aac_at_decoder_select="aac_adtstoasc_bsf"
3014 ac3_at_decoder_deps="audiotoolbox"
3015 ac3_at_decoder_select="ac3_parser"
3016 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
3017 alac_at_decoder_deps="audiotoolbox"
3018 amr_nb_at_decoder_deps="audiotoolbox"
3019 avisynth_deps_any="libdl LoadLibrary"
3020 avisynth_demuxer_deps="avisynth"
3021 avisynth_demuxer_select="riffdec"
3022 eac3_at_decoder_deps="audiotoolbox"
3023 eac3_at_decoder_select="ac3_parser"
3024 gsm_ms_at_decoder_deps="audiotoolbox"
3025 ilbc_at_decoder_deps="audiotoolbox"
3026 mp1_at_decoder_deps="audiotoolbox"
3027 mp2_at_decoder_deps="audiotoolbox"
3028 mp3_at_decoder_deps="audiotoolbox"
3029 mp1_at_decoder_select="mpegaudioheader"
3030 mp2_at_decoder_select="mpegaudioheader"
3031 mp3_at_decoder_select="mpegaudioheader"
3032 pcm_alaw_at_decoder_deps="audiotoolbox"
3033 pcm_mulaw_at_decoder_deps="audiotoolbox"
3034 qdmc_at_decoder_deps="audiotoolbox"
3035 qdm2_at_decoder_deps="audiotoolbox"
3036 aac_at_encoder_deps="audiotoolbox"
3037 aac_at_encoder_select="audio_frame_queue"
3038 alac_at_encoder_deps="audiotoolbox"
3039 alac_at_encoder_select="audio_frame_queue"
3040 ilbc_at_encoder_deps="audiotoolbox"
3041 ilbc_at_encoder_select="audio_frame_queue"
3042 pcm_alaw_at_encoder_deps="audiotoolbox"
3043 pcm_alaw_at_encoder_select="audio_frame_queue"
3044 pcm_mulaw_at_encoder_deps="audiotoolbox"
3045 pcm_mulaw_at_encoder_select="audio_frame_queue"
3046 chromaprint_muxer_deps="chromaprint"
3047 h264_videotoolbox_encoder_deps="pthreads"
3048 h264_videotoolbox_encoder_select="videotoolbox_encoder"
3049 hevc_videotoolbox_encoder_deps="pthreads"
3050 hevc_videotoolbox_encoder_select="videotoolbox_encoder"
3051 libaom_av1_decoder_deps="libaom"
3052 libaom_av1_encoder_deps="libaom"
3053 libaom_av1_encoder_select="extract_extradata_bsf"
3054 libcelt_decoder_deps="libcelt"
3055 libcodec2_decoder_deps="libcodec2"
3056 libcodec2_encoder_deps="libcodec2"
3057 libdavs2_decoder_deps="libdavs2"
3058 libfdk_aac_decoder_deps="libfdk_aac"
3059 libfdk_aac_encoder_deps="libfdk_aac"
3060 libfdk_aac_encoder_select="audio_frame_queue"
3061 libgme_demuxer_deps="libgme"
3062 libgsm_decoder_deps="libgsm"
3063 libgsm_encoder_deps="libgsm"
3064 libgsm_ms_decoder_deps="libgsm"
3065 libgsm_ms_encoder_deps="libgsm"
3066 libilbc_decoder_deps="libilbc"
3067 libilbc_encoder_deps="libilbc"
3068 libkvazaar_encoder_deps="libkvazaar"
3069 libmodplug_demuxer_deps="libmodplug"
3070 libmp3lame_encoder_deps="libmp3lame"
3071 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
3072 libopencore_amrnb_decoder_deps="libopencore_amrnb"
3073 libopencore_amrnb_encoder_deps="libopencore_amrnb"
3074 libopencore_amrnb_encoder_select="audio_frame_queue"
3075 libopencore_amrwb_decoder_deps="libopencore_amrwb"
3076 libopenh264_decoder_deps="libopenh264"
3077 libopenh264_decoder_select="h264_mp4toannexb_bsf"
3078 libopenh264_encoder_deps="libopenh264"
3079 libopenjpeg_decoder_deps="libopenjpeg"
3080 libopenjpeg_encoder_deps="libopenjpeg"
3081 libopenmpt_demuxer_deps="libopenmpt"
3082 libopus_decoder_deps="libopus"
3083 libopus_encoder_deps="libopus"
3084 libopus_encoder_select="audio_frame_queue"
3085 librsvg_decoder_deps="librsvg"
3086 libshine_encoder_deps="libshine"
3087 libshine_encoder_select="audio_frame_queue"
3088 libspeex_decoder_deps="libspeex"
3089 libspeex_encoder_deps="libspeex"
3090 libspeex_encoder_select="audio_frame_queue"
3091 libtheora_encoder_deps="libtheora"
3092 libtwolame_encoder_deps="libtwolame"
3093 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
3094 libvorbis_decoder_deps="libvorbis"
3095 libvorbis_encoder_deps="libvorbis libvorbisenc"
3096 libvorbis_encoder_select="audio_frame_queue"
3097 libvpx_vp8_decoder_deps="libvpx"
3098 libvpx_vp8_encoder_deps="libvpx"
3099 libvpx_vp9_decoder_deps="libvpx"
3100 libvpx_vp9_encoder_deps="libvpx"
3101 libwavpack_encoder_deps="libwavpack"
3102 libwavpack_encoder_select="audio_frame_queue"
3103 libwebp_encoder_deps="libwebp"
3104 libwebp_anim_encoder_deps="libwebp"
3105 libx262_encoder_deps="libx262"
3106 libx264_encoder_deps="libx264"
3107 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
3108 libx264rgb_encoder_select="libx264_encoder"
3109 libx265_encoder_deps="libx265"
3110 libxavs_encoder_deps="libxavs"
3111 libxvid_encoder_deps="libxvid"
3112 libzvbi_teletext_decoder_deps="libzvbi"
3113 vapoursynth_demuxer_deps="vapoursynth"
3114 videotoolbox_suggest="coreservices"
3115 videotoolbox_deps="corefoundation coremedia corevideo"
3116 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
3117
3118 # demuxers / muxers
3119 ac3_demuxer_select="ac3_parser"
3120 aiff_muxer_select="iso_media"
3121 asf_demuxer_select="riffdec"
3122 asf_o_demuxer_select="riffdec"
3123 asf_muxer_select="riffenc"
3124 asf_stream_muxer_select="asf_muxer"
3125 avi_demuxer_select="iso_media riffdec exif"
3126 avi_muxer_select="riffenc"
3127 caf_demuxer_select="iso_media riffdec"
3128 caf_muxer_select="iso_media"
3129 dash_muxer_select="mp4_muxer"
3130 dash_demuxer_deps="libxml2"
3131 dirac_demuxer_select="dirac_parser"
3132 dts_demuxer_select="dca_parser"
3133 dtshd_demuxer_select="dca_parser"
3134 dv_demuxer_select="dvprofile"
3135 dv_muxer_select="dvprofile"
3136 dxa_demuxer_select="riffdec"
3137 eac3_demuxer_select="ac3_parser"
3138 f4v_muxer_select="mov_muxer"
3139 fifo_muxer_deps="threads"
3140 flac_demuxer_select="flac_parser"
3141 hds_muxer_select="flv_muxer"
3142 hls_muxer_select="mpegts_muxer"
3143 hls_muxer_suggest="gcrypt openssl"
3144 image2_alias_pix_demuxer_select="image2_demuxer"
3145 image2_brender_pix_demuxer_select="image2_demuxer"
3146 ipod_muxer_select="mov_muxer"
3147 ismv_muxer_select="mov_muxer"
3148 matroska_audio_muxer_select="matroska_muxer"
3149 matroska_demuxer_select="iso_media riffdec"
3150 matroska_demuxer_suggest="bzlib lzo zlib"
3151 matroska_muxer_select="iso_media riffenc"
3152 mmf_muxer_select="riffenc"
3153 mov_demuxer_select="iso_media riffdec"
3154 mov_demuxer_suggest="zlib"
3155 mov_muxer_select="iso_media riffenc rtpenc_chain"
3156 mp3_demuxer_select="mpegaudio_parser"
3157 mp3_muxer_select="mpegaudioheader"
3158 mp4_muxer_select="mov_muxer"
3159 mpegts_demuxer_select="iso_media"
3160 mpegts_muxer_select="adts_muxer latm_muxer"
3161 mpegtsraw_demuxer_select="mpegts_demuxer"
3162 mxf_d10_muxer_select="mxf_muxer"
3163 mxf_opatom_muxer_select="mxf_muxer"
3164 nut_muxer_select="riffenc"
3165 nuv_demuxer_select="riffdec"
3166 oga_muxer_select="ogg_muxer"
3167 ogg_demuxer_select="dirac_parse"
3168 ogv_muxer_select="ogg_muxer"
3169 opus_muxer_select="ogg_muxer"
3170 psp_muxer_select="mov_muxer"
3171 rtp_demuxer_select="sdp_demuxer"
3172 rtp_muxer_select="golomb"
3173 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3174 rtsp_demuxer_select="http_protocol rtpdec"
3175 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3176 sap_demuxer_select="sdp_demuxer"
3177 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3178 sdp_demuxer_select="rtpdec"
3179 smoothstreaming_muxer_select="ismv_muxer"
3180 spdif_demuxer_select="adts_header"
3181 spdif_muxer_select="adts_header"
3182 spx_muxer_select="ogg_muxer"
3183 swf_demuxer_suggest="zlib"
3184 tak_demuxer_select="tak_parser"
3185 tg2_muxer_select="mov_muxer"
3186 tgp_muxer_select="mov_muxer"
3187 vobsub_demuxer_select="mpegps_demuxer"
3188 w64_demuxer_select="wav_demuxer"
3189 w64_muxer_select="wav_muxer"
3190 wav_demuxer_select="riffdec"
3191 wav_muxer_select="riffenc"
3192 webm_muxer_select="iso_media riffenc"
3193 webm_dash_manifest_demuxer_select="matroska_demuxer"
3194 wtv_demuxer_select="mpegts_demuxer riffdec"
3195 wtv_muxer_select="mpegts_muxer riffenc"
3196 xmv_demuxer_select="riffdec"
3197 xwma_demuxer_select="riffdec"
3198
3199 # indevs / outdevs
3200 android_camera_indev_deps="android camera2ndk mediandk pthreads"
3201 android_camera_indev_extralibs="-landroid -lcamera2ndk -lmediandk"
3202 alsa_indev_deps="alsa"
3203 alsa_outdev_deps="alsa"
3204 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3205 avfoundation_indev_suggest="coregraphics applicationservices"
3206 avfoundation_indev_extralibs="-framework Foundation"
3207 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3208 caca_outdev_deps="libcaca"
3209 decklink_deps_any="libdl LoadLibrary"
3210 decklink_indev_deps="decklink threads"
3211 decklink_indev_extralibs="-lstdc++"
3212 decklink_outdev_deps="decklink threads"
3213 decklink_outdev_extralibs="-lstdc++"
3214 libndi_newtek_indev_deps="libndi_newtek"
3215 libndi_newtek_indev_extralibs="-lndi"
3216 libndi_newtek_outdev_deps="libndi_newtek"
3217 libndi_newtek_outdev_extralibs="-lndi"
3218 dshow_indev_deps="IBaseFilter"
3219 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3220 fbdev_indev_deps="linux_fb_h"
3221 fbdev_outdev_deps="linux_fb_h"
3222 gdigrab_indev_deps="CreateDIBSection"
3223 gdigrab_indev_extralibs="-lgdi32"
3224 gdigrab_indev_select="bmp_decoder"
3225 iec61883_indev_deps="libiec61883"
3226 jack_indev_deps="libjack"
3227 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3228 kmsgrab_indev_deps="libdrm"
3229 lavfi_indev_deps="avfilter"
3230 libcdio_indev_deps="libcdio"
3231 libdc1394_indev_deps="libdc1394"
3232 openal_indev_deps="openal"
3233 opengl_outdev_deps="opengl"
3234 oss_indev_deps_any="sys_soundcard_h"
3235 oss_outdev_deps_any="sys_soundcard_h"
3236 pulse_indev_deps="libpulse"
3237 pulse_outdev_deps="libpulse"
3238 sdl2_outdev_deps="sdl2"
3239 sndio_indev_deps="sndio"
3240 sndio_outdev_deps="sndio"
3241 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3242 v4l2_indev_suggest="libv4l2"
3243 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3244 v4l2_outdev_suggest="libv4l2"
3245 vfwcap_indev_deps="vfw32 vfwcap_defines"
3246 xcbgrab_indev_deps="libxcb"
3247 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3248 xv_outdev_deps="xlib"
3249
3250 # protocols
3251 async_protocol_deps="threads"
3252 bluray_protocol_deps="libbluray"
3253 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3254 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl mbedtls"
3255 ffrtmpcrypt_protocol_select="tcp_protocol"
3256 ffrtmphttp_protocol_conflict="librtmp_protocol"
3257 ffrtmphttp_protocol_select="http_protocol"
3258 ftp_protocol_select="tcp_protocol"
3259 gopher_protocol_select="network"
3260 http_protocol_select="tcp_protocol"
3261 http_protocol_suggest="zlib"
3262 httpproxy_protocol_select="tcp_protocol"
3263 httpproxy_protocol_suggest="zlib"
3264 https_protocol_select="tls_protocol"
3265 https_protocol_suggest="zlib"
3266 icecast_protocol_select="http_protocol"
3267 librtmp_protocol_deps="librtmp"
3268 librtmpe_protocol_deps="librtmp"
3269 librtmps_protocol_deps="librtmp"
3270 librtmpt_protocol_deps="librtmp"
3271 librtmpte_protocol_deps="librtmp"
3272 libsmbclient_protocol_deps="libsmbclient gplv3"
3273 libssh_protocol_deps="libssh"
3274 libtls_conflict="openssl gnutls mbedtls"
3275 mmsh_protocol_select="http_protocol"
3276 mmst_protocol_select="network"
3277 libsrt_protocol_deps="libsrt"
3278 libsrt_protocol_select="network"
3279 rtmp_protocol_conflict="librtmp_protocol"
3280 rtmp_protocol_select="tcp_protocol"
3281 rtmp_protocol_suggest="zlib"
3282 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3283 rtmpe_protocol_suggest="zlib"
3284 rtmps_protocol_conflict="librtmp_protocol"
3285 rtmps_protocol_select="tls_protocol"
3286 rtmps_protocol_suggest="zlib"
3287 rtmpt_protocol_select="ffrtmphttp_protocol"
3288 rtmpt_protocol_suggest="zlib"
3289 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3290 rtmpte_protocol_suggest="zlib"
3291 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3292 rtmpts_protocol_suggest="zlib"
3293 rtp_protocol_select="udp_protocol"
3294 schannel_conflict="openssl gnutls libtls mbedtls"
3295 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3296 sctp_protocol_select="network"
3297 securetransport_conflict="openssl gnutls libtls mbedtls"
3298 srtp_protocol_select="rtp_protocol srtp"
3299 tcp_protocol_select="network"
3300 tls_protocol_deps_any="gnutls openssl schannel securetransport libtls mbedtls"
3301 tls_protocol_select="tcp_protocol"
3302 udp_protocol_select="network"
3303 udplite_protocol_select="network"
3304 unix_protocol_deps="sys_un_h"
3305 unix_protocol_select="network"
3306
3307 # filters
3308 afftfilt_filter_deps="avcodec"
3309 afftfilt_filter_select="fft"
3310 afir_filter_deps="avcodec"
3311 afir_filter_select="fft"
3312 amovie_filter_deps="avcodec avformat"
3313 aresample_filter_deps="swresample"
3314 ass_filter_deps="libass"
3315 atempo_filter_deps="avcodec"
3316 atempo_filter_select="rdft"
3317 avgblur_opencl_filter_deps="opencl"
3318 azmq_filter_deps="libzmq"
3319 blackframe_filter_deps="gpl"
3320 boxblur_filter_deps="gpl"
3321 boxblur_opencl_filter_deps="opencl gpl"
3322 bs2b_filter_deps="libbs2b"
3323 colormatrix_filter_deps="gpl"
3324 convolution_opencl_filter_deps="opencl"
3325 convolve_filter_deps="avcodec"
3326 convolve_filter_select="fft"
3327 coreimage_filter_deps="coreimage appkit"
3328 coreimage_filter_extralibs="-framework OpenGL"
3329 coreimagesrc_filter_deps="coreimage appkit"
3330 coreimagesrc_filter_extralibs="-framework OpenGL"
3331 cover_rect_filter_deps="avcodec avformat gpl"
3332 cropdetect_filter_deps="gpl"
3333 deconvolve_filter_deps="avcodec"
3334 deconvolve_filter_select="fft"
3335 deinterlace_qsv_filter_deps="libmfx"
3336 deinterlace_vaapi_filter_deps="vaapi"
3337 delogo_filter_deps="gpl"
3338 denoise_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3339 deshake_filter_select="pixelutils"
3340 drawtext_filter_deps="libfreetype"
3341 drawtext_filter_suggest="libfontconfig libfribidi"
3342 elbg_filter_deps="avcodec"
3343 eq_filter_deps="gpl"
3344 fftfilt_filter_deps="avcodec"
3345 fftfilt_filter_select="rdft"
3346 fftdnoiz_filter_deps="avcodec"
3347 fftdnoiz_filter_select="fft"
3348 find_rect_filter_deps="avcodec avformat gpl"
3349 firequalizer_filter_deps="avcodec"
3350 firequalizer_filter_select="rdft"
3351 flite_filter_deps="libflite"
3352 framerate_filter_select="pixelutils"
3353 frei0r_filter_deps="frei0r libdl"
3354 frei0r_src_filter_deps="frei0r libdl"
3355 fspp_filter_deps="gpl"
3356 geq_filter_deps="gpl"
3357 histeq_filter_deps="gpl"
3358 hqdn3d_filter_deps="gpl"
3359 interlace_filter_deps="gpl"
3360 kerndeint_filter_deps="gpl"
3361 ladspa_filter_deps="ladspa libdl"
3362 lensfun_filter_deps="liblensfun version3"
3363 lv2_filter_deps="lv2"
3364 mcdeint_filter_deps="avcodec gpl"
3365 movie_filter_deps="avcodec avformat"
3366 mpdecimate_filter_deps="gpl"
3367 mpdecimate_filter_select="pixelutils"
3368 mptestsrc_filter_deps="gpl"
3369 negate_filter_deps="lut_filter"
3370 nnedi_filter_deps="gpl"
3371 ocr_filter_deps="libtesseract"
3372 ocv_filter_deps="libopencv"
3373 openclsrc_filter_deps="opencl"
3374 overlay_opencl_filter_deps="opencl"
3375 overlay_qsv_filter_deps="libmfx"
3376 overlay_qsv_filter_select="qsvvpp"
3377 owdenoise_filter_deps="gpl"
3378 pan_filter_deps="swresample"
3379 perspective_filter_deps="gpl"
3380 phase_filter_deps="gpl"
3381 pp7_filter_deps="gpl"
3382 pp_filter_deps="gpl postproc"
3383 prewitt_opencl_filter_deps="opencl"
3384 procamp_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3385 program_opencl_filter_deps="opencl"
3386 pullup_filter_deps="gpl"
3387 removelogo_filter_deps="avcodec avformat swscale"
3388 repeatfields_filter_deps="gpl"
3389 resample_filter_deps="avresample"
3390 roberts_opencl_filter_deps="opencl"
3391 rubberband_filter_deps="librubberband"
3392 sab_filter_deps="gpl swscale"
3393 scale2ref_filter_deps="swscale"
3394 scale_filter_deps="swscale"
3395 scale_qsv_filter_deps="libmfx"
3396 select_filter_select="pixelutils"
3397 sharpness_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3398 showcqt_filter_deps="avcodec avformat swscale"
3399 showcqt_filter_suggest="libfontconfig libfreetype"
3400 showcqt_filter_select="fft"
3401 showfreqs_filter_deps="avcodec"
3402 showfreqs_filter_select="fft"
3403 showspectrum_filter_deps="avcodec"
3404 showspectrum_filter_select="fft"
3405 showspectrumpic_filter_deps="avcodec"
3406 showspectrumpic_filter_select="fft"
3407 signature_filter_deps="gpl avcodec avformat"
3408 smartblur_filter_deps="gpl swscale"
3409 sobel_opencl_filter_deps="opencl"
3410 sofalizer_filter_deps="libmysofa avcodec"
3411 sofalizer_filter_select="fft"
3412 spectrumsynth_filter_deps="avcodec"
3413 spectrumsynth_filter_select="fft"
3414 spp_filter_deps="gpl avcodec"
3415 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3416 sr_filter_deps="avformat swscale"
3417 sr_filter_select="dnn"
3418 stereo3d_filter_deps="gpl"
3419 subtitles_filter_deps="avformat avcodec libass"
3420 super2xsai_filter_deps="gpl"
3421 pixfmts_super2xsai_test_deps="super2xsai_filter"
3422 tinterlace_filter_deps="gpl"
3423 tinterlace_merge_test_deps="tinterlace_filter"
3424 tinterlace_pad_test_deps="tinterlace_filter"
3425 tonemap_filter_deps="const_nan"
3426 tonemap_opencl_filter_deps="opencl const_nan"
3427 unsharp_opencl_filter_deps="opencl"
3428 uspp_filter_deps="gpl avcodec"
3429 vaguedenoiser_filter_deps="gpl"
3430 vidstabdetect_filter_deps="libvidstab"
3431 vidstabtransform_filter_deps="libvidstab"
3432 libvmaf_filter_deps="libvmaf pthreads"
3433 zmq_filter_deps="libzmq"
3434 zoompan_filter_deps="swscale"
3435 zscale_filter_deps="libzimg const_nan"
3436 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3437 vpp_qsv_filter_deps="libmfx"
3438 vpp_qsv_filter_select="qsvvpp"
3439
3440 # examples
3441 avio_dir_cmd_deps="avformat avutil"
3442 avio_reading_deps="avformat avcodec avutil"
3443 decode_audio_example_deps="avcodec avutil"
3444 decode_video_example_deps="avcodec avutil"
3445 demuxing_decoding_example_deps="avcodec avformat avutil"
3446 encode_audio_example_deps="avcodec avutil"
3447 encode_video_example_deps="avcodec avutil"
3448 extract_mvs_example_deps="avcodec avformat avutil"
3449 filter_audio_example_deps="avfilter avutil"
3450 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3451 filtering_video_example_deps="avfilter avcodec avformat avutil"
3452 http_multiclient_example_deps="avformat avutil fork"
3453 hw_decode_example_deps="avcodec avformat avutil"
3454 metadata_example_deps="avformat avutil"
3455 muxing_example_deps="avcodec avformat avutil swscale"
3456 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3457 remuxing_example_deps="avcodec avformat avutil"
3458 resampling_audio_example_deps="avutil swresample"
3459 scaling_video_example_deps="avutil swscale"
3460 transcode_aac_example_deps="avcodec avformat swresample"
3461 transcoding_example_deps="avfilter avcodec avformat avutil"
3462 vaapi_encode_example_deps="avcodec avutil h264_vaapi_encoder"
3463 vaapi_transcode_example_deps="avcodec avformat avutil h264_vaapi_encoder"
3464
3465 # EXTRALIBS_LIST
3466 cpu_init_extralibs="pthreads_extralibs"
3467 cws2fws_extralibs="zlib_extralibs"
3468
3469 # libraries, in linking order
3470 avcodec_deps="avutil"
3471 avcodec_suggest="libm"
3472 avcodec_select="null_bsf"
3473 avdevice_deps="avformat avcodec avutil"
3474 avdevice_suggest="libm"
3475 avfilter_deps="avutil"
3476 avfilter_suggest="libm"
3477 avformat_deps="avcodec avutil"
3478 avformat_suggest="libm network zlib"
3479 avresample_deps="avutil"
3480 avresample_suggest="libm"
3481 avutil_suggest="clock_gettime ffnvcodec libm libdrm libmfx opencl user32 vaapi videotoolbox corefoundation corevideo coremedia bcrypt"
3482 postproc_deps="avutil gpl"
3483 postproc_suggest="libm"
3484 swresample_deps="avutil"
3485 swresample_suggest="libm libsoxr"
3486 swscale_deps="avutil"
3487 swscale_suggest="libm"
3488
3489 avcodec_extralibs="pthreads_extralibs iconv_extralibs"
3490 avfilter_extralibs="pthreads_extralibs"
3491 avutil_extralibs="d3d11va_extralibs nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3492
3493 # programs
3494 ffmpeg_deps="avcodec avfilter avformat"
3495 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3496                null_filter
3497                trim_filter"
3498 ffmpeg_suggest="ole32 psapi shell32"
3499 ffplay_deps="avcodec avformat swscale swresample sdl2"
3500 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3501 ffplay_suggest="shell32"
3502 ffprobe_deps="avcodec avformat"
3503 ffprobe_suggest="shell32"
3504
3505 # documentation
3506 podpages_deps="perl"
3507 manpages_deps="perl pod2man"
3508 htmlpages_deps="perl"
3509 htmlpages_deps_any="makeinfo_html texi2html"
3510 txtpages_deps="perl makeinfo"
3511 doc_deps_any="manpages htmlpages podpages txtpages"
3512
3513 # default parameters
3514
3515 logfile="ffbuild/config.log"
3516
3517 # installation paths
3518 prefix_default="/usr/local"
3519 bindir_default='${prefix}/bin'
3520 datadir_default='${prefix}/share/ffmpeg'
3521 docdir_default='${prefix}/share/doc/ffmpeg'
3522 incdir_default='${prefix}/include'
3523 libdir_default='${prefix}/lib'
3524 mandir_default='${prefix}/share/man'
3525
3526 # toolchain
3527 ar_default="ar"
3528 cc_default="gcc"
3529 cxx_default="g++"
3530 host_cc_default="gcc"
3531 doxygen_default="doxygen"
3532 install="install"
3533 ln_s_default="ln -s -f"
3534 nm_default="nm -g"
3535 pkg_config_default=pkg-config
3536 ranlib_default="ranlib"
3537 strip_default="strip"
3538 version_script='--version-script'
3539 objformat="elf32"
3540 x86asmexe_default="nasm"
3541 windres_default="windres"
3542 nvcc_default="nvcc"
3543 nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
3544 striptype="direct"
3545
3546 # OS
3547 target_os_default=$(tolower $(uname -s))
3548 host_os=$target_os_default
3549
3550 # machine
3551 if test "$target_os_default" = aix; then
3552     arch_default=$(uname -p)
3553     strip_default="strip -X32_64"
3554 else
3555     arch_default=$(uname -m)
3556 fi
3557 cpu="generic"
3558 intrinsics="none"
3559
3560 # configurable options
3561 enable $PROGRAM_LIST
3562 enable $DOCUMENT_LIST
3563 enable $EXAMPLE_LIST
3564 enable $(filter_out avresample $LIBRARY_LIST)
3565 enable stripping
3566
3567 enable asm
3568 enable debug
3569 enable doc
3570 enable faan faandct faanidct
3571 enable optimizations
3572 enable runtime_cpudetect
3573 enable safe_bitstream_reader
3574 enable static
3575 enable swscale_alpha
3576 enable valgrind_backtrace
3577
3578 sws_max_filter_size_default=256
3579 set_default sws_max_filter_size
3580
3581 # internal components are enabled by default
3582 enable $EXTRALIBS_LIST
3583
3584 # Avoid external, non-system, libraries getting enabled by dependency resolution
3585 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3586
3587 # build settings
3588 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3589 LIBPREF="lib"
3590 LIBSUF=".a"
3591 FULLNAME='$(NAME)$(BUILDSUF)'
3592 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3593 SLIBPREF="lib"
3594 SLIBSUF=".so"
3595 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3596 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3597 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3598 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3599 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3600 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3601 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3602
3603 asflags_filter=echo
3604 cflags_filter=echo
3605 ldflags_filter=echo
3606
3607 AS_C='-c'
3608 AS_O='-o $@'
3609 CC_C='-c'
3610 CC_E='-E -o $@'
3611 CC_O='-o $@'
3612 CXX_C='-c'
3613 CXX_O='-o $@'
3614 OBJCC_C='-c'
3615 OBJCC_E='-E -o $@'
3616 OBJCC_O='-o $@'
3617 X86ASM_O='-o $@'
3618 LD_O='-o $@'
3619 LD_LIB='-l%'
3620 LD_PATH='-L'
3621 HOSTCC_C='-c'
3622 HOSTCC_E='-E -o $@'
3623 HOSTCC_O='-o $@'
3624 HOSTLD_O='-o $@'
3625 NVCC_C='-c'
3626 NVCC_O='-o $@'
3627
3628 host_extralibs='-lm'
3629 host_cflags_filter=echo
3630 host_ldflags_filter=echo
3631
3632 target_path='$(CURDIR)'
3633
3634 # since the object filename is not given with the -MM flag, the compiler
3635 # is only able to print the basename, and we must add the path ourselves
3636 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3637 DEPFLAGS='-MM'
3638
3639 mkdir -p ffbuild
3640
3641 # find source path
3642 if test -f configure; then
3643     source_path=.
3644 else
3645     source_path=$(cd $(dirname "$0"); pwd)
3646     case "$source_path" in
3647         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3648     esac
3649     test -e "$source_path/config.h" &&
3650         die "Out of tree builds are impossible with config.h in source dir."
3651 fi
3652
3653 for v in "$@"; do
3654     r=${v#*=}
3655     l=${v%"$r"}
3656     r=$(sh_quote "$r")
3657     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3658 done
3659
3660 find_things_extern(){
3661     thing=$1
3662     pattern=$2
3663     file=$source_path/$3
3664     out=${4:-$thing}
3665     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$out/p" "$file"
3666 }
3667
3668 find_filters_extern(){
3669     file=$source_path/$1
3670     #sed -n "s/^extern AVFilter ff_\([avfsinkrc]\{2,5\}\)_\(\w\+\);/\2_filter/p" $file
3671     sed -E -n "s/^extern AVFilter ff_([avfsinkrc]{2,5})_([a-zA-Z0-9_]+);/\2_filter/p" $file
3672 }
3673
3674 FILTER_LIST=$(find_filters_extern libavfilter/allfilters.c)
3675 OUTDEV_LIST=$(find_things_extern muxer AVOutputFormat libavdevice/alldevices.c outdev)
3676 INDEV_LIST=$(find_things_extern demuxer AVInputFormat libavdevice/alldevices.c indev)
3677 MUXER_LIST=$(find_things_extern muxer AVOutputFormat libavformat/allformats.c)
3678 DEMUXER_LIST=$(find_things_extern demuxer AVInputFormat libavformat/allformats.c)
3679 ENCODER_LIST=$(find_things_extern encoder AVCodec libavcodec/allcodecs.c)
3680 DECODER_LIST=$(find_things_extern decoder AVCodec libavcodec/allcodecs.c)
3681 CODEC_LIST="
3682     $ENCODER_LIST
3683     $DECODER_LIST
3684 "
3685 PARSER_LIST=$(find_things_extern parser AVCodecParser libavcodec/parsers.c)
3686 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3687 HWACCEL_LIST=$(find_things_extern hwaccel AVHWAccel libavcodec/hwaccels.h)
3688 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3689
3690 AVCODEC_COMPONENTS_LIST="
3691     $BSF_LIST
3692     $DECODER_LIST
3693     $ENCODER_LIST
3694     $HWACCEL_LIST
3695     $PARSER_LIST
3696 "
3697
3698 AVDEVICE_COMPONENTS_LIST="
3699     $INDEV_LIST
3700     $OUTDEV_LIST
3701 "
3702
3703 AVFILTER_COMPONENTS_LIST="
3704     $FILTER_LIST
3705 "
3706
3707 AVFORMAT_COMPONENTS_LIST="
3708     $DEMUXER_LIST
3709     $MUXER_LIST
3710     $PROTOCOL_LIST
3711 "
3712
3713 ALL_COMPONENTS="
3714     $AVCODEC_COMPONENTS_LIST
3715     $AVDEVICE_COMPONENTS_LIST
3716     $AVFILTER_COMPONENTS_LIST
3717     $AVFORMAT_COMPONENTS_LIST
3718 "
3719
3720 for n in $COMPONENT_LIST; do
3721     v=$(toupper ${n%s})_LIST
3722     eval enable \$$v
3723     eval ${n}_if_any="\$$v"
3724 done
3725
3726 enable $ARCH_EXT_LIST
3727
3728 die_unknown(){
3729     echo "Unknown option \"$1\"."
3730     echo "See $0 --help for available options."
3731     exit 1
3732 }
3733
3734 print_in_columns() {
3735     cols=$(expr $ncols / 24)
3736     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3737 }
3738
3739 show_list() {
3740     suffix=_$1
3741     shift
3742     echo $* | sed s/$suffix//g | print_in_columns
3743     exit 0
3744 }
3745
3746 rand_list(){
3747     IFS=', '
3748     set -- $*
3749     unset IFS
3750     for thing; do
3751         comp=${thing%:*}
3752         prob=${thing#$comp}
3753         prob=${prob#:}
3754         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3755         echo "prob ${prob:-0.5}"
3756         printf '%s\n' $comp
3757     done
3758 }
3759
3760 do_random(){
3761     action=$1
3762     shift
3763     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3764     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3765 }
3766
3767 for opt do
3768     optval="${opt#*=}"
3769     case "$opt" in
3770         --extra-ldflags=*)
3771             add_ldflags $optval
3772         ;;
3773         --extra-ldexeflags=*)
3774             add_ldexeflags $optval
3775         ;;
3776         --extra-ldsoflags=*)
3777             add_ldsoflags $optval
3778         ;;
3779         --extra-ldlibflags=*)
3780             warn "The --extra-ldlibflags option is only provided for compatibility and will be\n"\
3781                  "removed in the future. Use --extra-ldsoflags instead."
3782             add_ldsoflags $optval
3783         ;;
3784         --extra-libs=*)
3785             add_extralibs $optval
3786         ;;
3787         --disable-devices)
3788             disable $INDEV_LIST $OUTDEV_LIST
3789         ;;
3790         --enable-debug=*)
3791             debuglevel="$optval"
3792         ;;
3793         --disable-programs)
3794             disable $PROGRAM_LIST
3795         ;;
3796         --disable-everything)
3797             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3798         ;;
3799         --disable-all)
3800             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3801             disable $LIBRARY_LIST $PROGRAM_LIST doc
3802             enable avutil
3803         ;;
3804         --enable-random|--disable-random)
3805             action=${opt%%-random}
3806             do_random ${action#--} $COMPONENT_LIST
3807         ;;
3808         --enable-random=*|--disable-random=*)
3809             action=${opt%%-random=*}
3810             do_random ${action#--} $optval
3811         ;;
3812         --enable-sdl)
3813             enable sdl2
3814         ;;
3815         --enable-*=*|--disable-*=*)
3816             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3817             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3818             eval list=\$$(toupper $thing)_LIST
3819             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3820             list=$(filter "$name" $list)
3821             [ "$list" = "" ] && warn "Option $opt did not match anything"
3822             $action $list
3823         ;;
3824         --enable-yasm|--disable-yasm)
3825             warn "The ${opt} option is only provided for compatibility and will be\n"\
3826                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3827             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3828         ;;
3829         --yasmexe=*)
3830             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3831                  "removed in the future. Use --x86asmexe instead."
3832             x86asmexe="$optval"
3833         ;;
3834         --enable-?*|--disable-?*)
3835             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3836             if is_in $option $COMPONENT_LIST; then
3837                 test $action = disable && action=unset
3838                 eval $action \$$(toupper ${option%s})_LIST
3839             elif is_in $option $CMDLINE_SELECT; then
3840                 $action $option
3841             else
3842                 die_unknown $opt
3843             fi
3844         ;;
3845         --list-*)
3846             NAME="${opt#--list-}"
3847             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3848             NAME=${NAME%s}
3849             eval show_list $NAME \$$(toupper $NAME)_LIST
3850         ;;
3851         --help|-h) show_help
3852         ;;
3853         --quiet|-q) quiet=yes
3854         ;;
3855         --fatal-warnings) enable fatal_warnings
3856         ;;
3857         --libfuzzer=*)
3858             libfuzzer_path="$optval"
3859         ;;
3860         *)
3861             optname="${opt%%=*}"
3862             optname="${optname#--}"
3863             optname=$(echo "$optname" | sed 's/-/_/g')
3864             if is_in $optname $CMDLINE_SET; then
3865                 eval $optname='$optval'
3866             elif is_in $optname $CMDLINE_APPEND; then
3867                 append $optname "$optval"
3868             else
3869                 die_unknown $opt
3870             fi
3871         ;;
3872     esac
3873 done
3874
3875 for e in $env; do
3876     eval "export $e"
3877 done
3878
3879 if disabled autodetect; then
3880
3881     # Unless iconv is explicitely disabled by the user, we still want to probe
3882     # for the iconv from the libc.
3883     disabled iconv || enable libc_iconv
3884
3885     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3886     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3887 fi
3888 # Mark specifically enabled, but normally autodetected libraries as requested.
3889 for lib in $AUTODETECT_LIBS; do
3890     enabled $lib && request $lib
3891 done
3892 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
3893 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3894 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3895
3896 disabled logging && logfile=/dev/null
3897
3898 # command line configuration sanity checks
3899
3900 # we need to build at least one lib type
3901 if ! enabled_any static shared; then
3902     cat <<EOF
3903 At least one library type must be built.
3904 Specify --enable-static to build the static libraries or --enable-shared to
3905 build the shared libraries as well. To only build the shared libraries specify
3906 --disable-static in addition to --enable-shared.
3907 EOF
3908     exit 1
3909 fi
3910
3911 die_license_disabled() {
3912     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3913 }
3914
3915 die_license_disabled_gpl() {
3916     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3917 }
3918
3919 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3920 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3921
3922 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3923 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3924
3925 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3926
3927 if enabled nonfree; then
3928     license="nonfree and unredistributable"
3929 elif enabled gplv3; then
3930     license="GPL version 3 or later"
3931 elif enabled lgplv3; then
3932     license="LGPL version 3 or later"
3933 elif enabled gpl; then
3934     license="GPL version 2 or later"
3935 else
3936     license="LGPL version 2.1 or later"
3937 fi
3938
3939 enabled_all gnutls openssl &&
3940     die "GnuTLS and OpenSSL must not be enabled at the same time."
3941
3942 enabled_all gnutls mbedtls &&
3943     die "GnuTLS and mbedTLS must not be enabled at the same time."
3944
3945 enabled_all openssl mbedtls &&
3946     die "OpenSSL and mbedTLS must not be enabled at the same time."
3947
3948 # Disable all the library-specific components if the library itself
3949 # is disabled, see AVCODEC_LIST and following _LIST variables.
3950
3951 disable_components(){
3952     disabled ${1} && disable $(
3953         eval components="\$$(toupper ${1})_COMPONENTS"
3954         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3955     )
3956 }
3957
3958 map 'disable_components $v' $LIBRARY_LIST
3959
3960 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3961 set >> $logfile
3962
3963 test -n "$valgrind" && toolchain="valgrind-memcheck"
3964
3965 enabled ossfuzz && ! echo $CFLAGS | grep -q -- "-fsanitize="  &&{
3966     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
3967     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
3968 }
3969
3970 case "$toolchain" in
3971     *-asan)
3972         cc_default="${toolchain%-asan}"
3973         add_cflags  -fsanitize=address
3974         add_ldflags -fsanitize=address
3975     ;;
3976     *-msan)
3977         cc_default="${toolchain%-msan}"
3978         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3979         add_ldflags -fsanitize=memory
3980     ;;
3981     *-tsan)
3982         cc_default="${toolchain%-tsan}"
3983         add_cflags  -fsanitize=thread
3984         add_ldflags -fsanitize=thread
3985         case "$toolchain" in
3986             gcc-tsan)
3987                 add_cflags  -fPIC
3988                 add_ldflags -fPIC
3989                 ;;
3990         esac
3991     ;;
3992     *-usan)
3993         cc_default="${toolchain%-usan}"
3994         add_cflags  -fsanitize=undefined
3995         add_ldflags -fsanitize=undefined
3996     ;;
3997     valgrind-*)
3998         target_exec_default="valgrind"
3999         case "$toolchain" in
4000             valgrind-massif)
4001                 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"
4002                 ;;
4003             valgrind-memcheck)
4004                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
4005                 ;;
4006         esac
4007     ;;
4008     msvc)
4009         # Check whether the current MSVC version needs the C99 converter.
4010         # From MSVC 2013 (compiler major version 18) onwards, it does actually
4011         # support enough of C99 to build ffmpeg. Default to the new
4012         # behaviour if the regexp was unable to match anything, since this
4013         # successfully parses the version number of existing supported
4014         # versions that require the converter (MSVC 2010 and 2012).
4015         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
4016         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
4017             cc_default="cl"
4018             cxx_default="cl"
4019         else
4020             die "Unsupported MSVC version (2013 or newer required)"
4021         fi
4022         ld_default="$source_path/compat/windows/mslink"
4023         nm_default="dumpbin -symbols"
4024         ar_default="lib"
4025         case "$arch" in
4026         aarch64|arm64)
4027             as_default="armasm64"
4028             ;;
4029         arm*)
4030             as_default="armasm"
4031             ;;
4032         esac
4033         target_os_default="win32"
4034         # Use a relative path for TMPDIR. This makes sure all the
4035         # ffconf temp files are written with a relative path, avoiding
4036         # issues with msys/win32 path conversion for MSVC parameters
4037         # such as -Fo<file> or -out:<file>.
4038         TMPDIR=.
4039     ;;
4040     icl)
4041         cc_default="icl"
4042         ld_default="xilink"
4043         nm_default="dumpbin -symbols"
4044         ar_default="xilib"
4045         target_os_default="win32"
4046         TMPDIR=.
4047     ;;
4048     gcov)
4049         add_cflags  -fprofile-arcs -ftest-coverage
4050         add_ldflags -fprofile-arcs -ftest-coverage
4051     ;;
4052     llvm-cov)
4053         add_cflags -fprofile-arcs -ftest-coverage
4054         add_ldflags --coverage
4055     ;;
4056     hardened)
4057         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
4058         add_cflags   -fno-strict-overflow -fstack-protector-all
4059         add_ldflags  -Wl,-z,relro -Wl,-z,now
4060         add_cflags   -fPIE
4061         add_ldexeflags -fPIE -pie
4062     ;;
4063     ?*)
4064         die "Unknown toolchain $toolchain"
4065     ;;
4066 esac
4067
4068 if test -n "$cross_prefix"; then
4069     test -n "$arch" && test -n "$target_os" ||
4070         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
4071     enable cross_compile
4072 fi
4073
4074 ar_default="${cross_prefix}${ar_default}"
4075 cc_default="${cross_prefix}${cc_default}"
4076 cxx_default="${cross_prefix}${cxx_default}"
4077 nm_default="${cross_prefix}${nm_default}"
4078 pkg_config_default="${cross_prefix}${pkg_config_default}"
4079 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
4080     ranlib_default="${cross_prefix}${ranlib_default} -D"
4081 else
4082     ranlib_default="${cross_prefix}${ranlib_default}"
4083 fi
4084 strip_default="${cross_prefix}${strip_default}"
4085 windres_default="${cross_prefix}${windres_default}"
4086
4087 sysinclude_default="${sysroot}/usr/include"
4088
4089 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
4090     target_exec target_os x86asmexe nvcc
4091 enabled cross_compile || host_cc_default=$cc
4092 set_default host_cc
4093
4094 pkg_config_fail_message=""
4095 if ! $pkg_config --version >/dev/null 2>&1; then
4096     warn "$pkg_config not found, library detection may fail."
4097     pkg_config=false
4098 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
4099     pkg_config_fail_message="
4100 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
4101 fi
4102
4103 if test $doxygen != $doxygen_default && \
4104   ! $doxygen --version >/dev/null 2>&1; then
4105     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
4106 fi
4107
4108 exesuf() {
4109     case $1 in
4110         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
4111     esac
4112 }
4113
4114 EXESUF=$(exesuf $target_os)
4115 HOSTEXESUF=$(exesuf $host_os)
4116
4117 # set temporary file name
4118 : ${TMPDIR:=$TEMPDIR}
4119 : ${TMPDIR:=$TMP}
4120 : ${TMPDIR:=/tmp}
4121
4122 if [ -n "$tempprefix" ] ; then
4123     mktemp(){
4124         tmpname="$tempprefix.${HOSTNAME}.${UID}"
4125         echo "$tmpname"
4126         mkdir "$tmpname"
4127     }
4128 elif ! test_cmd mktemp -u XXXXXX; then
4129     # simple replacement for missing mktemp
4130     # NOT SAFE FOR GENERAL USE
4131     mktemp(){
4132         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
4133         echo "$tmpname"
4134         mkdir "$tmpname"
4135     }
4136 fi
4137
4138 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
4139     die "Unable to create temporary directory in $TMPDIR."
4140
4141 tmpfile(){
4142     tmp="${FFTMPDIR}/test"$2
4143     (set -C; exec > $tmp) 2> /dev/null ||
4144         die "Unable to create temporary file in $FFTMPDIR."
4145     eval $1=$tmp
4146 }
4147
4148 trap 'rm -rf -- "$FFTMPDIR"' EXIT
4149 trap 'exit 2' INT
4150
4151 tmpfile TMPASM .asm
4152 tmpfile TMPC   .c
4153 tmpfile TMPCPP .cpp
4154 tmpfile TMPE   $EXESUF
4155 tmpfile TMPH   .h
4156 tmpfile TMPM   .m
4157 tmpfile TMPO   .o
4158 tmpfile TMPS   .S
4159 tmpfile TMPSH  .sh
4160 tmpfile TMPV   .ver
4161
4162 unset -f mktemp
4163
4164 chmod +x $TMPE
4165
4166 # make sure we can execute files in $TMPDIR
4167 cat > $TMPSH 2>> $logfile <<EOF
4168 #! /bin/sh
4169 EOF
4170 chmod +x $TMPSH >> $logfile 2>&1
4171 if ! $TMPSH >> $logfile 2>&1; then
4172     cat <<EOF
4173 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
4174 variable to another directory and make sure that it is not mounted noexec.
4175 EOF
4176     die "Sanity test failed."
4177 fi
4178
4179 armasm_flags(){
4180     for flag; do
4181         case $flag in
4182             # Filter out MSVC cl.exe options from cflags that shouldn't
4183             # be passed to gas-preprocessor
4184             -M[TD]*)                                            ;;
4185             *)                  echo $flag                      ;;
4186         esac
4187    done
4188 }
4189
4190 cparser_flags(){
4191     for flag; do
4192         case $flag in
4193             -Wno-switch)             echo -Wno-switch-enum ;;
4194             -Wno-format-zero-length) ;;
4195             -Wdisabled-optimization) ;;
4196             -Wno-pointer-sign)       echo -Wno-other ;;
4197             *)                       echo $flag ;;
4198         esac
4199     done
4200 }
4201
4202 msvc_common_flags(){
4203     for flag; do
4204         case $flag in
4205             # In addition to specifying certain flags under the compiler
4206             # specific filters, they must be specified here as well or else the
4207             # generic catch all at the bottom will print the original flag.
4208             -Wall)                ;;
4209             -Wextra)              ;;
4210             -std=c99)             ;;
4211             # Common flags
4212             -fomit-frame-pointer) ;;
4213             -g)                   echo -Z7 ;;
4214             -fno-math-errno)      ;;
4215             -fno-common)          ;;
4216             -fno-signed-zeros)    ;;
4217             -fPIC)                ;;
4218             -mthumb)              ;;
4219             -march=*)             ;;
4220             -lz)                  echo zlib.lib ;;
4221             -lx264)               echo libx264.lib ;;
4222             -lstdc++)             ;;
4223             -l*)                  echo ${flag#-l}.lib ;;
4224             -LARGEADDRESSAWARE)   echo $flag ;;
4225             -L*)                  echo -libpath:${flag#-L} ;;
4226             *)                    echo $flag ;;
4227         esac
4228     done
4229 }
4230
4231 msvc_flags(){
4232     msvc_common_flags "$@"
4233     for flag; do
4234         case $flag in
4235             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4236                                        -wd4554 ;;
4237             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4238                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4239                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4240                                        -wd4307 \
4241                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4242         esac
4243     done
4244 }
4245
4246 icl_flags(){
4247     msvc_common_flags "$@"
4248     for flag; do
4249         case $flag in
4250             # Despite what Intel's documentation says -Wall, which is supported
4251             # on Windows, does enable remarks so disable them here.
4252             -Wall)                echo $flag -Qdiag-disable:remark ;;
4253             -std=c99)             echo -Qstd=c99 ;;
4254             -flto)                echo -ipo ;;
4255         esac
4256     done
4257 }
4258
4259 icc_flags(){
4260     for flag; do
4261         case $flag in
4262             -flto)                echo -ipo ;;
4263             *)                    echo $flag ;;
4264         esac
4265     done
4266 }
4267
4268 suncc_flags(){
4269     for flag; do
4270         case $flag in
4271             -march=*|-mcpu=*)
4272                 case "${flag#*=}" in
4273                     native)                   echo -xtarget=native       ;;
4274                     v9|niagara)               echo -xarch=sparc          ;;
4275                     ultrasparc)               echo -xarch=sparcvis       ;;
4276                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4277                     i586|pentium)             echo -xchip=pentium        ;;
4278                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4279                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4280                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4281                     pentium4*)          echo -xtarget=pentium4           ;;
4282                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4283                     *-sse3)             echo -xarch=sse3                 ;;
4284                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4285                     bonnell)                   echo -xarch=ssse3         ;;
4286                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4287                     westmere)                  echo -xtarget=westmere    ;;
4288                     silvermont)                echo -xarch=sse4_2        ;;
4289                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4290                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4291                                                echo -xarch=avx           ;;
4292                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4293                     btver1)                    echo -xarch=amdsse4a      ;;
4294                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4295                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4296                     k8|opteron|athlon64|athlon-fx)
4297                                                echo -xarch=sse2a         ;;
4298                     athlon*)                   echo -xarch=pentium_proa  ;;
4299                 esac
4300                 ;;
4301             -std=c99)             echo -xc99              ;;
4302             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4303             -fPIC)                echo -KPIC -xcode=pic32 ;;
4304             -W*,*)                echo $flag              ;;
4305             -f*-*|-W*|-mimpure-text)                      ;;
4306             -shared)              echo -G                 ;;
4307             *)                    echo $flag              ;;
4308         esac
4309     done
4310 }
4311
4312 probe_cc(){
4313     pfx=$1
4314     _cc=$2
4315     first=$3
4316
4317     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4318     unset _ld_o _ldflags _ld_lib _ld_path
4319     unset _depflags _DEPCMD _DEPFLAGS
4320     _flags_filter=echo
4321
4322     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4323         true # no-op to avoid reading stdin in following checks
4324     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4325         _type=llvm_gcc
4326         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4327         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4328         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4329         _cflags_speed='-O3'
4330         _cflags_size='-Os'
4331     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4332         _type=gcc
4333         gcc_version=$($_cc --version | head -n1)
4334         gcc_basever=$($_cc -dumpversion)
4335         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4336         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4337         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4338         case $gcc_basever in
4339             2) ;;
4340             2.*) ;;
4341             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4342         esac
4343         if [ "$first" = true ]; then
4344             case $gcc_basever in
4345                 4.2*)
4346                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4347             esac
4348         fi
4349         _cflags_speed='-O3'
4350         _cflags_size='-Os'
4351     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4352         _type=icc
4353         _ident=$($_cc --version | head -n1)
4354         _depflags='-MMD'
4355         _cflags_speed='-O3'
4356         _cflags_size='-Os'
4357         _cflags_noopt='-O1'
4358         _flags_filter=icc_flags
4359     elif $_cc -v 2>&1 | grep -q xlc; then
4360         _type=xlc
4361         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4362         _cflags_speed='-O5'
4363         _cflags_size='-O5 -qcompact'
4364     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4365         test -d "$sysroot" || die "No valid sysroot specified."
4366         _type=armcc
4367         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4368         armcc_conf="$PWD/armcc.conf"
4369         $_cc --arm_linux_configure                 \
4370              --arm_linux_config_file="$armcc_conf" \
4371              --configure_sysroot="$sysroot"        \
4372              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4373              die "Error creating armcc configuration file."
4374         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4375         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4376         as_default="${cross_prefix}gcc"
4377         _depflags='-MMD'
4378         _cflags_speed='-O3'
4379         _cflags_size='-Os'
4380     elif $_cc -v 2>&1 | grep -q clang && ! $_cc -? > /dev/null 2>&1; then
4381         _type=clang
4382         _ident=$($_cc --version 2>/dev/null | head -n1)
4383         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4384         _cflags_speed='-O3'
4385         _cflags_size='-Oz'
4386     elif $_cc -V 2>&1 | grep -q Sun; then
4387         _type=suncc
4388         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4389         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4390         _DEPFLAGS='-xM1 -xc99'
4391         _ldflags='-std=c99'
4392         _cflags_speed='-O5'
4393         _cflags_size='-O5 -xspace'
4394         _flags_filter=suncc_flags
4395     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4396         _type=pathscale
4397         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4398         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4399         _cflags_speed='-O2'
4400         _cflags_size='-Os'
4401         _flags_filter='filter_out -Wdisabled-optimization'
4402     elif $_cc -v 2>&1 | grep -q Open64; then
4403         _type=open64
4404         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4405         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4406         _cflags_speed='-O2'
4407         _cflags_size='-Os'
4408         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4409     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4410         _type=armasm
4411         _ident=$($_cc | head -n1)
4412         # 4509: "This form of conditional instruction is deprecated"
4413         _flags="-nologo -ignore 4509"
4414         _flags_filter=armasm_flags
4415     elif $_cc 2>&1 | grep -q Intel; then
4416         _type=icl
4417         _ident=$($_cc 2>&1 | head -n1)
4418         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4419         # Not only is O3 broken on 13.x+ but it is slower on all previous
4420         # versions (tested) as well.
4421         _cflags_speed="-O2"
4422         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4423         if $_cc 2>&1 | grep -q Linker; then
4424             _ld_o='-out:$@'
4425         else
4426             _ld_o='-Fe$@'
4427         fi
4428         _cc_o='-Fo$@'
4429         _cc_e='-P'
4430         _flags_filter=icl_flags
4431         _ld_lib='lib%.a'
4432         _ld_path='-libpath:'
4433         # -Qdiag-error to make icl error when seeing certain unknown arguments
4434         _flags='-nologo -Qdiag-error:4044,10157'
4435         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4436         # with MSVC which enables it by default.
4437         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4438         disable stripping
4439     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4440         # lld can emulate multiple different linkers; in ms link.exe mode,
4441         # the -? parameter gives the help output which contains an identifyable
4442         # string, while it gives an error in other modes.
4443         _type=lld-link
4444         # The link.exe mode doesn't have a switch for getting the version,
4445         # but we can force it back to gnu mode and get the version from there.
4446         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4447         _ld_o='-out:$@'
4448         _flags_filter=msvc_flags
4449         _ld_lib='lib%.a'
4450         _ld_path='-libpath:'
4451     elif $_cc -nologo- 2>&1 | grep -q Microsoft || { $_cc -v 2>&1 | grep -q clang && $_cc -? > /dev/null 2>&1; }; then
4452         _type=msvc
4453         _ident=$($_cc 2>&1 | head -n1 | tr -d '\r')
4454         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4455         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4456         _cflags_speed="-O2"
4457         _cflags_size="-O1"
4458         _cflags_noopt="-O1"
4459         if $_cc -nologo- 2>&1 | grep -q Linker; then
4460             _ld_o='-out:$@'
4461         else
4462             _ld_o='-Fe$@'
4463         fi
4464         _cc_o='-Fo$@'
4465         _cc_e='-P -Fi$@'
4466         _flags_filter=msvc_flags
4467         _ld_lib='lib%.a'
4468         _ld_path='-libpath:'
4469         _flags='-nologo'
4470         disable stripping
4471     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4472         _type=cparser
4473         _ident=$($_cc --version | head -n1)
4474         _depflags='-MMD'
4475         _cflags_speed='-O4'
4476         _cflags_size='-O2'
4477         _flags_filter=cparser_flags
4478     fi
4479
4480     eval ${pfx}_type=\$_type
4481     eval ${pfx}_ident=\$_ident
4482 }
4483
4484 set_ccvars(){
4485     eval ${1}_C=\${_cc_c-\${${1}_C}}
4486     eval ${1}_E=\${_cc_e-\${${1}_E}}
4487     eval ${1}_O=\${_cc_o-\${${1}_O}}
4488
4489     if [ -n "$_depflags" ]; then
4490         eval ${1}_DEPFLAGS=\$_depflags
4491     else
4492         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4493         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4494         eval DEP${1}FLAGS=\$_flags
4495     fi
4496 }
4497
4498 probe_cc cc "$cc" "true"
4499 cflags_filter=$_flags_filter
4500 cflags_speed=$_cflags_speed
4501 cflags_size=$_cflags_size
4502 cflags_noopt=$_cflags_noopt
4503 add_cflags $_flags $_cflags
4504 cc_ldflags=$_ldflags
4505 set_ccvars CC
4506 set_ccvars CXX
4507
4508 probe_cc hostcc "$host_cc"
4509 host_cflags_filter=$_flags_filter
4510 host_cflags_speed=$_cflags_speed
4511 add_host_cflags  $_flags $_cflags
4512 set_ccvars HOSTCC
4513
4514 test -n "$cc_type" && enable $cc_type ||
4515     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4516
4517 : ${as_default:=$cc}
4518 : ${objcc_default:=$cc}
4519 : ${dep_cc_default:=$cc}
4520 : ${ld_default:=$cc}
4521 : ${host_ld_default:=$host_cc}
4522 set_default ar as objcc dep_cc ld ln_s host_ld windres
4523
4524 probe_cc as "$as"
4525 asflags_filter=$_flags_filter
4526 add_asflags $_flags $_cflags
4527 set_ccvars AS
4528
4529 probe_cc objcc "$objcc"
4530 objcflags_filter=$_flags_filter
4531 add_objcflags $_flags $_cflags
4532 set_ccvars OBJC
4533
4534 probe_cc ld "$ld"
4535 ldflags_filter=$_flags_filter
4536 add_ldflags $_flags $_ldflags
4537 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4538 LD_O=${_ld_o-$LD_O}
4539 LD_LIB=${_ld_lib-$LD_LIB}
4540 LD_PATH=${_ld_path-$LD_PATH}
4541
4542 probe_cc hostld "$host_ld"
4543 host_ldflags_filter=$_flags_filter
4544 add_host_ldflags $_flags $_ldflags
4545 HOSTLD_O=${_ld_o-$HOSTLD_O}
4546
4547 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4548     probe_cc depcc "$dep_cc"
4549     CCDEP=${_DEPCMD:-$DEPCMD}
4550     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4551     DEPCCFLAGS=$_flags
4552 fi
4553
4554 if $ar 2>&1 | grep -q Microsoft; then
4555     arflags="-nologo"
4556     ar_o='-out:$@'
4557 elif $ar 2>&1 | grep -q "\[D\] "; then
4558     arflags="rcD"
4559     ar_o='$@'
4560 else
4561     arflags="rc"
4562     ar_o='$@'
4563 fi
4564
4565 add_cflags $extra_cflags
4566 add_cxxflags $extra_cxxflags
4567 add_objcflags $extra_objcflags
4568 add_asflags $extra_cflags
4569
4570 if test -n "$sysroot"; then
4571     case "$cc_type" in
4572         gcc|llvm_gcc|clang)
4573             add_cppflags --sysroot="$sysroot"
4574             add_ldflags --sysroot="$sysroot"
4575         ;;
4576     esac
4577 fi
4578
4579 if test "$cpu" = host; then
4580     enabled cross_compile &&
4581         die "--cpu=host makes no sense when cross-compiling."
4582
4583     case "$cc_type" in
4584         gcc|llvm_gcc)
4585             check_native(){
4586                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4587                 sed -n "/cc1.*$1=/{
4588                             s/.*$1=\\([^ ]*\\).*/\\1/
4589                             p
4590                             q
4591                         }" $TMPE
4592             }
4593             cpu=$(check_native -march || check_native -mcpu)
4594         ;;
4595         clang)
4596             check_native(){
4597                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4598                 sed -n "/cc1.*-target-cpu /{
4599                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4600                             p
4601                             q
4602                         }" $TMPE
4603             }
4604             cpu=$(check_native -march)
4605         ;;
4606     esac
4607
4608     test "${cpu:-host}" = host &&
4609         die "--cpu=host not supported with compiler $cc"
4610 fi
4611
4612 # Deal with common $arch aliases
4613 case "$arch" in
4614     aarch64|arm64)
4615         arch="aarch64"
4616     ;;
4617     arm*|iPad*|iPhone*)
4618         arch="arm"
4619     ;;
4620     mips*|IP*)
4621         case "$arch" in
4622         *el)
4623             add_cppflags -EL
4624             add_ldflags -EL
4625         ;;
4626         *eb)
4627             add_cppflags -EB
4628             add_ldflags -EB
4629         ;;
4630         esac
4631         arch="mips"
4632     ;;
4633     parisc*|hppa*)
4634         arch="parisc"
4635     ;;
4636     "Power Macintosh"|ppc*|powerpc*)
4637         arch="ppc"
4638     ;;
4639     s390|s390x)
4640         arch="s390"
4641     ;;
4642     sh4|sh)
4643         arch="sh4"
4644     ;;
4645     sun4*|sparc*)
4646         arch="sparc"
4647     ;;
4648     tilegx|tile-gx)
4649         arch="tilegx"
4650     ;;
4651     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4652         arch="x86"
4653     ;;
4654 esac
4655
4656 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4657 enable $arch
4658
4659 # Add processor-specific flags
4660 if enabled aarch64; then
4661
4662     case $cpu in
4663         armv*)
4664             cpuflags="-march=$cpu"
4665         ;;
4666         *)
4667             cpuflags="-mcpu=$cpu"
4668         ;;
4669     esac
4670
4671 elif enabled alpha; then
4672
4673     cpuflags="-mcpu=$cpu"
4674
4675 elif enabled arm; then
4676
4677     check_arm_arch() {
4678         test_cpp_condition stddef.h \
4679             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4680             $cpuflags
4681     }
4682
4683     probe_arm_arch() {
4684         if   check_arm_arch 4;        then echo armv4
4685         elif check_arm_arch 4T;       then echo armv4t
4686         elif check_arm_arch 5;        then echo armv5
4687         elif check_arm_arch 5E;       then echo armv5e
4688         elif check_arm_arch 5T;       then echo armv5t
4689         elif check_arm_arch 5TE;      then echo armv5te
4690         elif check_arm_arch 5TEJ;     then echo armv5te
4691         elif check_arm_arch 6;        then echo armv6
4692         elif check_arm_arch 6J;       then echo armv6j
4693         elif check_arm_arch 6K;       then echo armv6k
4694         elif check_arm_arch 6Z;       then echo armv6z
4695         elif check_arm_arch 6KZ;      then echo armv6zk
4696         elif check_arm_arch 6ZK;      then echo armv6zk
4697         elif check_arm_arch 6T2;      then echo armv6t2
4698         elif check_arm_arch 7;        then echo armv7
4699         elif check_arm_arch 7A  7_A;  then echo armv7-a
4700         elif check_arm_arch 7S;       then echo armv7-a
4701         elif check_arm_arch 7R  7_R;  then echo armv7-r
4702         elif check_arm_arch 7M  7_M;  then echo armv7-m
4703         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4704         elif check_arm_arch 8A  8_A;  then echo armv8-a
4705         fi
4706     }
4707
4708     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4709
4710     case $cpu in
4711         armv*)
4712             cpuflags="-march=$cpu"
4713             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4714         ;;
4715         *)
4716             cpuflags="-mcpu=$cpu"
4717             case $cpu in
4718                 cortex-a*)                               subarch=armv7a  ;;
4719                 cortex-r*)                               subarch=armv7r  ;;
4720                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4721                 arm11*)                                  subarch=armv6   ;;
4722                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4723                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4724                 *)                             subarch=$(probe_arm_arch) ;;
4725             esac
4726         ;;
4727     esac
4728
4729     case "$subarch" in
4730         armv5t*)    enable fast_clz                ;;
4731         armv[6-8]*)
4732             enable fast_clz
4733             disabled fast_unaligned || enable fast_unaligned
4734             ;;
4735     esac
4736
4737 elif enabled avr32; then
4738
4739     case $cpu in
4740         ap7[02]0[0-2])
4741             subarch="avr32_ap"
4742             cpuflags="-mpart=$cpu"
4743         ;;
4744         ap)
4745             subarch="avr32_ap"
4746             cpuflags="-march=$cpu"
4747         ;;
4748         uc3[ab]*)
4749             subarch="avr32_uc"
4750             cpuflags="-mcpu=$cpu"
4751         ;;
4752         uc)
4753             subarch="avr32_uc"
4754             cpuflags="-march=$cpu"
4755         ;;
4756     esac
4757
4758 elif enabled bfin; then
4759
4760     cpuflags="-mcpu=$cpu"
4761
4762 elif enabled mips; then
4763
4764     cpuflags="-march=$cpu"
4765
4766     if [ "$cpu" != "generic" ]; then
4767         disable mips32r2
4768         disable mips32r5
4769         disable mips64r2
4770         disable mips32r6
4771         disable mips64r6
4772         disable loongson2
4773         disable loongson3
4774
4775         case $cpu in
4776             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4777                 enable mips32r2
4778                 disable msa
4779             ;;
4780             p5600|i6400|p6600)
4781                 disable mipsdsp
4782                 disable mipsdspr2
4783             ;;
4784             loongson*)
4785                 enable loongson2
4786                 enable loongson3
4787                 enable local_aligned
4788                 enable simd_align_16
4789                 enable fast_64bit
4790                 enable fast_clz
4791                 enable fast_cmov
4792                 enable fast_unaligned
4793                 disable aligned_stack
4794                 disable mipsfpu
4795                 disable mipsdsp
4796                 disable mipsdspr2
4797                 case $cpu in
4798                     loongson3*)
4799                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4800                     ;;
4801                     loongson2e)
4802                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4803                     ;;
4804                     loongson2f)
4805                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4806                     ;;
4807                 esac
4808             ;;
4809             *)
4810                 # Unknown CPU. Disable everything.
4811                 warn "unknown CPU. Disabling all MIPS optimizations."
4812                 disable mipsfpu
4813                 disable mipsdsp
4814                 disable mipsdspr2
4815                 disable msa
4816                 disable mmi
4817             ;;
4818         esac
4819
4820         case $cpu in
4821             24kc)
4822                 disable mipsfpu
4823                 disable mipsdsp
4824                 disable mipsdspr2
4825             ;;
4826             24kf*)
4827                 disable mipsdsp
4828                 disable mipsdspr2
4829             ;;
4830             24kec|34kc|1004kc)
4831                 disable mipsfpu
4832                 disable mipsdspr2
4833             ;;
4834             24kef*|34kf*|1004kf*)
4835                 disable mipsdspr2
4836             ;;
4837             74kc)
4838                 disable mipsfpu
4839             ;;
4840             p5600)
4841                 enable mips32r5
4842                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4843             ;;
4844             i6400)
4845                 enable mips64r6
4846                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4847             ;;
4848             p6600)
4849                 enable mips64r6
4850                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4851             ;;
4852         esac
4853     else
4854         # We do not disable anything. Is up to the user to disable the unwanted features.
4855         warn 'generic cpu selected'
4856     fi
4857
4858 elif enabled ppc; then
4859
4860     disable ldbrx
4861
4862     case $(tolower $cpu) in
4863         601|ppc601|powerpc601)
4864             cpuflags="-mcpu=601"
4865             disable altivec
4866         ;;
4867         603*|ppc603*|powerpc603*)
4868             cpuflags="-mcpu=603"
4869             disable altivec
4870         ;;
4871         604*|ppc604*|powerpc604*)
4872             cpuflags="-mcpu=604"
4873             disable altivec
4874         ;;
4875         g3|75*|ppc75*|powerpc75*)
4876             cpuflags="-mcpu=750"
4877             disable altivec
4878         ;;
4879         g4|745*|ppc745*|powerpc745*)
4880             cpuflags="-mcpu=7450"
4881             disable vsx
4882         ;;
4883         74*|ppc74*|powerpc74*)
4884             cpuflags="-mcpu=7400"
4885             disable vsx
4886         ;;
4887         g5|970|ppc970|powerpc970)
4888             cpuflags="-mcpu=970"
4889             disable vsx
4890         ;;
4891         power[3-6]*)
4892             cpuflags="-mcpu=$cpu"
4893             disable vsx
4894         ;;
4895         power[7-8]*)
4896             cpuflags="-mcpu=$cpu"
4897         ;;
4898         cell)
4899             cpuflags="-mcpu=cell"
4900             enable ldbrx
4901             disable vsx
4902         ;;
4903         e500mc)
4904             cpuflags="-mcpu=e500mc"
4905             disable altivec
4906         ;;
4907         e500v2)
4908             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4909             disable altivec
4910             disable dcbzl
4911         ;;
4912         e500)
4913             cpuflags="-mcpu=8540 -mhard-float"
4914             disable altivec
4915             disable dcbzl
4916         ;;
4917     esac
4918
4919 elif enabled sparc; then
4920
4921     case $cpu in
4922         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4923             cpuflags="-mcpu=$cpu"
4924         ;;
4925         ultrasparc*|niagara[234])
4926             cpuflags="-mcpu=$cpu"
4927         ;;
4928     esac
4929
4930 elif enabled x86; then
4931
4932     case $cpu in
4933         i[345]86|pentium)
4934             cpuflags="-march=$cpu"
4935             disable i686
4936             disable mmx
4937         ;;
4938         # targets that do NOT support nopl and conditional mov (cmov)
4939         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4940             cpuflags="-march=$cpu"
4941             disable i686
4942         ;;
4943         # targets that do support nopl and conditional mov (cmov)
4944         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4945         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4946         |amdfam10|barcelona|b[dt]ver*|znver*)
4947             cpuflags="-march=$cpu"
4948             enable i686
4949             enable fast_cmov
4950         ;;
4951         # targets that do support conditional mov but on which it's slow
4952         pentium4|pentium4m|prescott|nocona)
4953             cpuflags="-march=$cpu"
4954             enable i686
4955             disable fast_cmov
4956         ;;
4957     esac
4958
4959 fi
4960
4961 if [ "$cpu" != generic ]; then
4962     add_cflags  $cpuflags
4963     add_asflags $cpuflags
4964     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4965 fi
4966
4967 # compiler sanity check
4968 test_exec <<EOF
4969 int main(void){ return 0; }
4970 EOF
4971 if test "$?" != 0; then
4972     echo "$cc is unable to create an executable file."
4973     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4974         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4975         echo "Only do this if you know what cross compiling means."
4976     fi
4977     die "C compiler test failed."
4978 fi
4979
4980 add_cppflags -D_ISOC99_SOURCE
4981 add_cxxflags -D__STDC_CONSTANT_MACROS
4982 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
4983
4984 # some compilers silently accept -std=c11, so we also need to check that the
4985 # version macro is defined properly
4986 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
4987     add_cflags -std=c11 ||
4988     check_cflags -std=c99
4989
4990 check_cppflags -D_FILE_OFFSET_BITS=64
4991 check_cppflags -D_LARGEFILE_SOURCE
4992
4993 add_host_cppflags -D_ISOC99_SOURCE
4994 check_host_cflags -std=c99
4995 check_host_cflags -Wall
4996 check_host_cflags $host_cflags_speed
4997
4998 check_64bit(){
4999     arch32=$1
5000     arch64=$2
5001     expr=${3:-'sizeof(void *) > 4'}
5002     test_code cc "" "int test[2*($expr) - 1]" &&
5003         subarch=$arch64 || subarch=$arch32
5004     enable $subarch
5005 }
5006
5007 case "$arch" in
5008     aarch64|alpha|ia64)
5009         enabled shared && enable_weak pic
5010     ;;
5011     mips)
5012         check_64bit mips mips64 '_MIPS_SIM > 1'
5013         enabled shared && enable_weak pic
5014     ;;
5015     parisc)
5016         check_64bit parisc parisc64
5017         enabled shared && enable_weak pic
5018     ;;
5019     ppc)
5020         check_64bit ppc ppc64
5021         enabled shared && enable_weak pic
5022     ;;
5023     s390)
5024         check_64bit s390 s390x
5025         enabled shared && enable_weak pic
5026     ;;
5027     sparc)
5028         check_64bit sparc sparc64
5029         enabled shared && enable_weak pic
5030     ;;
5031     x86)
5032         check_64bit x86_32 x86_64
5033         # Treat x32 as x64 for now. Note it also needs pic if shared
5034         test "$subarch" = "x86_32" && test_cpp_condition stddef.h 'defined(__x86_64__)' &&
5035             subarch=x86_64 && enable x86_64 && disable x86_32
5036         if enabled x86_64; then
5037             enabled shared && enable_weak pic
5038             objformat=elf64
5039         fi
5040     ;;
5041 esac
5042
5043 # OS specific
5044 case $target_os in
5045     aix)
5046         SHFLAGS=-shared
5047         add_cppflags '-I\$(SRC_PATH)/compat/aix'
5048         enabled shared && add_ldflags -Wl,-brtl
5049         arflags='-Xany -r -c'
5050         striptype=""
5051         ;;
5052     android)
5053         disable symver
5054         enable section_data_rel_ro
5055         add_cflags -fPIE
5056         add_ldexeflags -fPIE -pie
5057         SLIB_INSTALL_NAME='$(SLIBNAME)'
5058         SLIB_INSTALL_LINKS=
5059         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
5060         ;;
5061     haiku)
5062         prefix_default="/boot/common"
5063         network_extralibs="-lnetwork"
5064         host_extralibs=
5065         ;;
5066     sunos)
5067         SHFLAGS='-shared -Wl,-h,$$(@F)'
5068         enabled x86 && append SHFLAGS -mimpure-text
5069         network_extralibs="-lsocket -lnsl"
5070         add_cppflags -D__EXTENSIONS__
5071         # When using suncc to build, the Solaris linker will mark
5072         # an executable with each instruction set encountered by
5073         # the Solaris assembler.  As our libraries contain their own
5074         # guards for processor-specific code, instead suppress
5075         # generation of the HWCAPS ELF section on Solaris x86 only.
5076         enabled_all suncc x86 &&
5077             echo "hwcap_1 = OVERRIDE;" > mapfile &&
5078             add_ldflags -Wl,-M,mapfile
5079         nm_default='nm -P -g'
5080         version_script='-M'
5081         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
5082         ;;
5083     netbsd)
5084         disable symver
5085         oss_indev_extralibs="-lossaudio"
5086         oss_outdev_extralibs="-lossaudio"
5087         enabled gcc || check_ldflags -Wl,-zmuldefs
5088         ;;
5089     openbsd|bitrig)
5090         disable symver
5091         striptype=""
5092         SHFLAGS='-shared'
5093         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
5094         SLIB_INSTALL_LINKS=
5095         oss_indev_extralibs="-lossaudio"
5096         oss_outdev_extralibs="-lossaudio"
5097         ;;
5098     dragonfly)
5099         disable symver
5100         ;;
5101     freebsd)
5102         ;;
5103     bsd/os)
5104         add_extralibs -lpoll -lgnugetopt
5105         strip="strip -d"
5106         ;;
5107     darwin)
5108         enabled ppc && add_asflags -force_cpusubtype_ALL
5109         install_name_dir_default='$(SHLIBDIR)'
5110         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
5111         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
5112         strip="${strip} -x"
5113         add_ldflags -Wl,-dynamic,-search_paths_first
5114         check_cflags -Werror=partial-availability
5115         SLIBSUF=".dylib"
5116         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
5117         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
5118         enabled x86_64 && objformat="macho64" || objformat="macho32"
5119         enabled_any pic shared x86_64 ||
5120             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
5121         check_header dispatch/dispatch.h &&
5122             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
5123         if test -n "$sysroot"; then
5124             is_in -isysroot $cc $CPPFLAGS $CFLAGS || check_cppflags -isysroot $sysroot
5125             is_in -isysroot $ld $LDFLAGS          || check_ldflags  -isysroot $sysroot
5126         fi
5127         version_script='-exported_symbols_list'
5128         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
5129         ;;
5130     msys*)
5131         die "Native MSYS builds are discouraged, please use the MINGW environment."
5132         ;;
5133     mingw32*|mingw64*)
5134         target_os=mingw32
5135         LIBTARGET=i386
5136         if enabled x86_64; then
5137             LIBTARGET="i386:x86-64"
5138         elif enabled arm; then
5139             LIBTARGET="arm"
5140         elif enabled aarch64; then
5141             LIBTARGET="arm64"
5142         fi
5143         if enabled shared; then
5144             # Cannot build both shared and static libs when using dllimport.
5145             disable static
5146         fi
5147         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5148         enabled x86_32 && check_ldflags -Wl,--large-address-aware
5149         shlibdir_default="$bindir_default"
5150         SLIBPREF=""
5151         SLIBSUF=".dll"
5152         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5153         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5154         if test_cmd lib.exe -list; then
5155             SLIB_EXTRA_CMD=-'lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5156             if enabled x86_64; then
5157                 LIBTARGET=x64
5158             fi
5159         else
5160             SLIB_EXTRA_CMD=-'$(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
5161         fi
5162         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5163         SLIB_INSTALL_LINKS=
5164         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5165         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5166         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" AR="$(AR_CMD)" NM="$(NM_CMD)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5167         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--disable-auto-image-base $$(@:$(SLIBSUF)=.def)'
5168         enabled x86_64 && objformat="win64" || objformat="win32"
5169         dlltool="${cross_prefix}dlltool"
5170         ranlib=:
5171         enable dos_paths
5172         check_ldflags -Wl,--nxcompat,--dynamicbase
5173         # Lets work around some stupidity in binutils.
5174         # ld will strip relocations from executables even though we need them
5175         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
5176         # however ld then forgets what the entry point should be (oops) so we
5177         # have to manually (re)set it.
5178         if enabled x86_32; then
5179             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
5180         elif enabled x86_64; then
5181             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
5182             check_ldflags -Wl,--high-entropy-va # binutils 2.25
5183             # Set image base >4GB for extra entropy with HEASLR
5184             add_ldexeflags -Wl,--image-base,0x140000000
5185             append SHFLAGS -Wl,--image-base,0x180000000
5186         fi
5187         ;;
5188     win32|win64)
5189         disable symver
5190         if enabled shared; then
5191             # Link to the import library instead of the normal static library
5192             # for shared libs.
5193             LD_LIB='%.lib'
5194             # Cannot build both shared and static libs with MSVC or icl.
5195             disable static
5196         fi
5197         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
5198         shlibdir_default="$bindir_default"
5199         SLIBPREF=""
5200         SLIBSUF=".dll"
5201         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5202         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5203         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5204         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5205         SLIB_INSTALL_LINKS=
5206         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5207         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5208         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5209         enabled x86_64 && objformat="win64" || objformat="win32"
5210         ranlib=:
5211         enable dos_paths
5212         ;;
5213     cygwin*)
5214         target_os=cygwin
5215         shlibdir_default="$bindir_default"
5216         SLIBPREF="cyg"
5217         SLIBSUF=".dll"
5218         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5219         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5220         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5221         SLIB_INSTALL_LINKS=
5222         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
5223         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
5224         enabled x86_64 && objformat="win64" || objformat="win32"
5225         enable dos_paths
5226         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5227         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5228         ;;
5229     *-dos|freedos|opendos)
5230         network_extralibs="-lsocket"
5231         objformat="coff"
5232         enable dos_paths
5233         add_cppflags -U__STRICT_ANSI__
5234         ;;
5235     linux)
5236         enable section_data_rel_ro
5237         enabled_any arm aarch64 && enable_weak linux_perf
5238         ;;
5239     irix*)
5240         target_os=irix
5241         ranlib="echo ignoring ranlib"
5242         ;;
5243     os/2*)
5244         strip="lxlite -CS"
5245         striptype=""
5246         objformat="aout"
5247         add_cppflags -D_GNU_SOURCE
5248         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
5249         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
5250         LIBSUF="_s.a"
5251         SLIBPREF=""
5252         SLIBSUF=".dll"
5253         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5254         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
5255         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
5256             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
5257             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
5258             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
5259             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
5260         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
5261             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
5262         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5263         SLIB_INSTALL_LINKS=
5264         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
5265         enable dos_paths
5266         enable_weak os2threads
5267         ;;
5268     gnu/kfreebsd)
5269         add_cppflags -D_BSD_SOURCE
5270         ;;
5271     gnu)
5272         ;;
5273     qnx)
5274         add_cppflags -D_QNX_SOURCE
5275         network_extralibs="-lsocket"
5276         ;;
5277     symbian)
5278         SLIBSUF=".dll"
5279         enable dos_paths
5280         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
5281         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
5282         add_ldflags -Wl,--target1-abs,--no-undefined \
5283                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
5284                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
5285         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
5286                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
5287                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
5288         ;;
5289     minix)
5290         ;;
5291     none)
5292         ;;
5293     *)
5294         die "Unknown OS '$target_os'."
5295         ;;
5296 esac
5297
5298 # test if creating links works
5299 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5300 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5301 mkdir "$link_dest"
5302 $ln_s "$link_dest" "$link_name"
5303 touch "$link_dest/test_file"
5304 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5305     # create link to source path
5306     [ -e src ] && rm src
5307     $ln_s "$source_path" src
5308     source_link=src
5309 else
5310     # creating directory links doesn't work
5311     # fall back to using the full source path
5312     source_link="$source_path"
5313 fi
5314 # cleanup
5315 rm -r "$link_dest"
5316 rm -r "$link_name"
5317
5318 # determine libc flavour
5319
5320 probe_libc(){
5321     pfx=$1
5322     pfx_no_=${pfx%_}
5323     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5324     if test_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5325         eval ${pfx}libc_type=uclibc
5326         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5327     elif test_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5328         eval ${pfx}libc_type=glibc
5329         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5330     # MinGW headers can be installed on Cygwin, so check for newlib first.
5331     elif test_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5332         eval ${pfx}libc_type=newlib
5333         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
5334     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5335     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5336         eval ${pfx}libc_type=mingw64
5337         if test_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5338             add_compat msvcrt/snprintf.o
5339             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5340         fi
5341         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5342         eval test \$${pfx_no_}cc_type = "gcc" &&
5343             add_${pfx}cppflags -D__printf__=__gnu_printf__
5344         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5345             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5346     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5347          test_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5348         eval ${pfx}libc_type=mingw32
5349         test_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5350             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5351             die "ERROR: MinGW32 runtime version must be >= 3.15."
5352         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5353         test_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
5354             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5355         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5356             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5357         eval test \$${pfx_no_}cc_type = "gcc" &&
5358             add_${pfx}cppflags -D__printf__=__gnu_printf__
5359     elif test_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5360         eval ${pfx}libc_type=msvcrt
5361         if test_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5362             if [ "$pfx" = host_ ]; then
5363                 add_host_cppflags -Dsnprintf=_snprintf
5364             else
5365                 add_compat strtod.o strtod=avpriv_strtod
5366                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5367                                              _snprintf=avpriv_snprintf  \
5368                                              vsnprintf=avpriv_vsnprintf
5369             fi
5370         fi
5371         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5372         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5373         # 0x601 by default unless something else is set by the user.
5374         # This can easily lead to us detecting functions only present
5375         # in such new versions and producing binaries requiring windows 7.0.
5376         # Therefore explicitly set the default to Vista unless the user has
5377         # set something else on the command line.
5378         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5379         # family. For these cases, configure is free to use any functions
5380         # found in the SDK headers by default. (Alternatively, we could force
5381         # _WIN32_WINNT to 0x0602 in that case.)
5382         test_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5383             { test_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0600; }
5384 #ifdef WINAPI_FAMILY
5385 #include <winapifamily.h>
5386 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5387 #error not desktop
5388 #endif
5389 #endif
5390 EOF
5391         if [ "$pfx" = "" ]; then
5392             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5393             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5394         fi
5395     elif test_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5396         eval ${pfx}libc_type=klibc
5397     elif test_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5398         eval ${pfx}libc_type=bionic
5399     elif test_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5400         eval ${pfx}libc_type=solaris
5401         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5402     fi
5403     test_${pfx}cc <<EOF
5404 #include <time.h>
5405 void *v = localtime_r;
5406 EOF
5407 test "$?" != 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
5408 #include <time.h>
5409 void *v = localtime_r;
5410 EOF
5411
5412     eval test -n "\${${pfx}libc_type}" && enable ${pfx}libc_${libc_type}
5413 }
5414
5415 probe_libc
5416 probe_libc host_
5417
5418 # hacks for compiler/libc/os combinations
5419
5420 case $libc_type in
5421     bionic)
5422         add_compat strtod.o strtod=avpriv_strtod
5423         ;;
5424 esac
5425
5426 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5427     add_cppflags '-I\$(SRC_PATH)/compat/float'
5428
5429 test_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5430
5431 set_default libdir
5432 : ${shlibdir_default:="$libdir"}
5433 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5434
5435 set_default $PATHS_LIST
5436 set_default nm
5437
5438 disabled optimizations || enabled ossfuzz || check_cflags -fomit-frame-pointer
5439
5440 enable_weak_pic() {
5441     disabled pic && return
5442     enable pic
5443     add_cppflags -DPIC
5444     case "$target_os" in
5445     mingw*|cygwin*|win*)
5446         ;;
5447     *)
5448         add_cflags -fPIC
5449         add_asflags -fPIC
5450         ;;
5451     esac
5452 }
5453
5454 enabled pic && enable_weak_pic
5455
5456 test_cc <<EOF || die "Symbol mangling check failed."
5457 int ff_extern;
5458 EOF
5459 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5460 extern_prefix=${sym%%ff_extern*}
5461
5462 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
5463
5464 for restrict_keyword in restrict __restrict__ __restrict ""; do
5465     test_code cc "" "char * $restrict_keyword p" && break
5466 done
5467
5468 check_cc pragma_deprecated "" '_Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"")'
5469
5470 # The global variable ensures the bits appear unchanged in the object file.
5471 test_cc <<EOF || die "endian test failed"
5472 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5473 EOF
5474 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5475
5476 check_cc const_nan math.h "struct { double d; } static const bar[] = { { NAN } }"
5477
5478 if ! enabled ppc64 || enabled bigendian; then
5479     disable vsx
5480 fi
5481
5482 check_gas() {
5483     log "check_gas using '$as' as AS"
5484     # :vararg is used on aarch64, arm and ppc altivec
5485     check_as vararg "
5486 .macro m n, y:vararg=0
5487 \n: .int \y
5488 .endm
5489 m x" || return 1
5490     # .altmacro is only used in arm asm
5491     ! enabled arm || check_as gnu_as ".altmacro"
5492 }
5493
5494 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5495     nogas=:
5496     enabled_any arm aarch64 && nogas=die
5497     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5498     as_noop=-v
5499
5500     case $as_type in
5501         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5502         gcc)  gaspp_as_type=gas ;;
5503         *)    gaspp_as_type=$as_type ;;
5504     esac
5505
5506     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5507
5508     test "${as#*gas-preprocessor.pl}" != "$as" ||
5509     test_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5510         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5511
5512     if ! check_gas ; then
5513         as=${gas:=$as}
5514         check_gas || \
5515             $nogas "GNU assembler not found, install/update gas-preprocessor"
5516     fi
5517
5518     check_as as_func ".func test
5519                       .endfunc"
5520 fi
5521
5522 check_inline_asm inline_asm_labels '"1:\n"'
5523
5524 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5525
5526 if enabled aarch64; then
5527     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5528     # internal assembler in clang 3.3 does not support this instruction
5529     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5530     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5531
5532     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5533
5534 elif enabled alpha; then
5535
5536     check_cflags -mieee
5537
5538 elif enabled arm; then
5539
5540     enabled msvc && check_cpp_condition thumb stddef.h "defined _M_ARMT"
5541     test_cpp_condition stddef.h "defined __thumb__" && test_cc <<EOF && enable_weak thumb
5542 float func(float a, float b){ return a+b; }
5543 EOF
5544     enabled thumb && check_cflags -mthumb || check_cflags -marm
5545
5546     if check_cpp_condition vfp_args stddef.h "defined __ARM_PCS_VFP"; then
5547         :
5548     elif check_cpp_condition vfp_args stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5549         :
5550     elif ! test_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5551         case "${cross_prefix:-$cc}" in
5552             *hardfloat*) enable vfp_args; fpabi=vfp ;;
5553             *) check_ld "cc" vfp_args <<EOF && fpabi=vfp || fpabi=soft ;;
5554 __asm__ (".eabi_attribute 28, 1");
5555 int main(void) { return 0; }
5556 EOF
5557         esac
5558         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5559     fi
5560
5561     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5562     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5563     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5564     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5565     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5566     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5567     enabled setend  && check_insn setend  'setend be'
5568
5569     [ $target_os = linux ] || [ $target_os = android ] ||
5570         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5571             $ARCH_EXT_LIST_ARM
5572
5573     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5574
5575     check_as as_arch_directive ".arch armv7-a"
5576     check_as as_dn_directive   "ra .dn d0.i16"
5577     check_as as_fpu_directive  ".fpu neon"
5578
5579     # llvm's integrated assembler supports .object_arch from llvm 3.5
5580     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
5581         check_as as_object_arch ".object_arch armv4"
5582
5583     # MS armasm fails to assemble our PIC constructs
5584     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5585
5586 elif enabled mips; then
5587
5588     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5589     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5590     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5591
5592     # Enable minimum ISA based on selected options
5593     if enabled mips64; then
5594         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5595         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5596         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5597     else
5598         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5599         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5600         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5601         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5602     fi
5603
5604     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5605     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5606     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_header msa.h || disable msa
5607     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5608     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5609
5610     if enabled bigendian && enabled msa; then
5611         disable msa
5612     fi
5613
5614 elif enabled parisc; then
5615
5616     if enabled gcc; then
5617         case $($cc -dumpversion) in
5618             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5619         esac
5620     fi
5621
5622 elif enabled ppc; then
5623
5624     enable local_aligned
5625
5626     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5627     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5628     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5629     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5630
5631     if enabled altivec; then
5632         check_cflags -maltivec -mabi=altivec
5633
5634         # check if our compiler supports Motorola AltiVec C API
5635         check_cc altivec altivec.h "vector signed int v1 = (vector signed int) { 0 };
5636                                     vector signed int v2 = (vector signed int) { 1 };
5637                                     v1 = vec_add(v1, v2);"
5638
5639         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5640     fi
5641
5642     if enabled vsx; then
5643         check_cflags -mvsx &&
5644         check_cc vsx altivec.h "int v[4] = { 0 };
5645                                 vector signed int v1 = vec_vsx_ld(0, v);"
5646     fi
5647
5648     if enabled power8; then
5649         check_cpp_condition power8 "altivec.h" "defined(_ARCH_PWR8)"
5650     fi
5651
5652 elif enabled x86; then
5653
5654     check_builtin rdtsc    intrin.h   "__rdtsc()"
5655     check_builtin mm_empty mmintrin.h "_mm_empty()"
5656
5657     enable local_aligned
5658
5659     # check whether EBP is available on x86
5660     # As 'i' is stored on the stack, this program will crash
5661     # if the base pointer is used to access it because the
5662     # base pointer is cleared in the inline assembly code.
5663     check_exec_crash <<EOF && enable ebp_available
5664 volatile int i=0;
5665 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5666 return i;
5667 EOF
5668
5669     # check whether EBX is available on x86
5670     check_inline_asm ebx_available '""::"b"(0)' &&
5671         check_inline_asm ebx_available '"":::"%ebx"'
5672
5673     # check whether xmm clobbers are supported
5674     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5675
5676     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5677         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5678
5679     # check whether binutils is new enough to compile SSSE3/MMXEXT
5680     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5681     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5682
5683     probe_x86asm(){
5684         x86asmexe_probe=$1
5685         if test_cmd $x86asmexe_probe -v; then
5686             x86asmexe=$x86asmexe_probe
5687             x86asm_type=nasm
5688             x86asm_debug="-g -F dwarf"
5689             X86ASMDEP=
5690             X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
5691         elif test_cmd $x86asmexe_probe --version; then
5692             x86asmexe=$x86asmexe_probe
5693             x86asm_type=yasm
5694             x86asm_debug="-g dwarf2"
5695             X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
5696             X86ASM_DEPFLAGS=
5697         fi
5698         check_x86asm x86asm "movbe ecx, [5]"
5699     }
5700
5701     if ! disabled_any asm mmx x86asm; then
5702         disable x86asm
5703         for program in $x86asmexe nasm yasm; do
5704             probe_x86asm $program && break
5705         done
5706         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
5707         X86ASMFLAGS="-f $objformat"
5708         enabled pic               && append X86ASMFLAGS "-DPIC"
5709         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
5710         case "$objformat" in
5711             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
5712         esac
5713
5714         check_x86asm avx512_external "vmovdqa32 [eax]{k1}{z}, zmm0"
5715         check_x86asm avx2_external   "vextracti128 xmm0, ymm0, 0"
5716         check_x86asm xop_external    "vpmacsdd xmm0, xmm1, xmm2, xmm3"
5717         check_x86asm fma4_external   "vfmaddps ymm0, ymm1, ymm2, ymm3"
5718         check_x86asm cpunop          "CPU amdnop"
5719     fi
5720
5721     case "$cpu" in
5722         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5723             disable fast_clz
5724         ;;
5725     esac
5726
5727 fi
5728
5729 check_cc intrinsics_neon arm_neon.h "int16x8_t test = vdupq_n_s16(0)"
5730
5731 check_ldflags -Wl,--as-needed
5732 check_ldflags -Wl,-z,noexecstack
5733
5734 if ! disabled network; then
5735     check_func getaddrinfo $network_extralibs
5736     check_func inet_aton $network_extralibs
5737
5738     check_type netdb.h "struct addrinfo"
5739     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5740     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5741     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5742     check_type poll.h "struct pollfd"
5743     check_type netinet/sctp.h "struct sctp_event_subscribe"
5744     check_struct "sys/socket.h" "struct msghdr" msg_flags
5745     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5746     check_type netinet/in.h "struct sockaddr_in6"
5747     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5748     check_type "sys/types.h sys/socket.h" socklen_t
5749
5750     # Prefer arpa/inet.h over winsock2
5751     if check_header arpa/inet.h ; then
5752         check_func closesocket
5753     elif check_header winsock2.h ; then
5754         check_func_headers winsock2.h closesocket -lws2 &&
5755             network_extralibs="-lws2" ||
5756         { check_func_headers winsock2.h closesocket -lws2_32 &&
5757             network_extralibs="-lws2_32"; } || disable winsock2_h network
5758         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5759
5760         check_type ws2tcpip.h socklen_t
5761         check_type ws2tcpip.h "struct addrinfo"
5762         check_type ws2tcpip.h "struct group_source_req"
5763         check_type ws2tcpip.h "struct ip_mreq_source"
5764         check_type ws2tcpip.h "struct ipv6_mreq"
5765         check_type winsock2.h "struct pollfd"
5766         check_struct winsock2.h "struct sockaddr" sa_len
5767         check_type ws2tcpip.h "struct sockaddr_in6"
5768         check_type ws2tcpip.h "struct sockaddr_storage"
5769     else
5770         disable network
5771     fi
5772 fi
5773
5774 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5775 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5776 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5777 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5778 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5779 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5780 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5781
5782 case "$custom_allocator" in
5783     jemalloc)
5784         # jemalloc by default does not use a prefix
5785         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5786     ;;
5787     tcmalloc)
5788         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
5789         malloc_prefix=tc_
5790     ;;
5791 esac
5792
5793 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5794 check_func  ${malloc_prefix}memalign            && enable memalign
5795 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5796
5797 check_func  access
5798 check_func_headers stdlib.h arc4random
5799 check_lib   clock_gettime time.h clock_gettime || check_lib clock_gettime time.h clock_gettime -lrt
5800 check_func  fcntl
5801 check_func  fork
5802 check_func  gethrtime
5803 check_func  getopt
5804 check_func  getrusage
5805 check_func  gettimeofday
5806 check_func  isatty
5807 check_func  mkstemp
5808 check_func  mmap
5809 check_func  mprotect
5810 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5811 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
5812 check_func  sched_getaffinity
5813 check_func  setrlimit
5814 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5815 check_func  strerror_r
5816 check_func  sysconf
5817 check_func  sysctl
5818 check_func  usleep
5819
5820 check_func_headers conio.h kbhit
5821 check_func_headers io.h setmode
5822 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5823 check_func_headers mach/mach_time.h mach_absolute_time
5824 check_func_headers stdlib.h getenv
5825 check_func_headers sys/stat.h lstat
5826
5827 check_func_headers windows.h GetProcessAffinityMask
5828 check_func_headers windows.h GetProcessTimes
5829 check_func_headers windows.h GetSystemTimeAsFileTime
5830 check_func_headers windows.h LoadLibrary
5831 check_func_headers windows.h MapViewOfFile
5832 check_func_headers windows.h PeekNamedPipe
5833 check_func_headers windows.h SetConsoleTextAttribute
5834 check_func_headers windows.h SetConsoleCtrlHandler
5835 check_func_headers windows.h Sleep
5836 check_func_headers windows.h VirtualAlloc
5837 check_func_headers glob.h glob
5838 enabled xlib &&
5839     check_lib xlib "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5840
5841 check_header direct.h
5842 check_header dirent.h
5843 check_header dxgidebug.h
5844 check_header dxva.h
5845 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5846 check_header io.h
5847 check_header linux/perf_event.h
5848 check_header libcrystalhd/libcrystalhd_if.h
5849 check_header malloc.h
5850 check_header net/udplite.h
5851 check_header poll.h
5852 check_header sys/param.h
5853 check_header sys/resource.h
5854 check_header sys/select.h
5855 check_header sys/time.h
5856 check_header sys/un.h
5857 check_header termios.h
5858 check_header unistd.h
5859 check_header valgrind/valgrind.h
5860 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5861 check_header windows.h
5862 check_header X11/extensions/XvMClib.h
5863 check_header asm/types.h
5864
5865 # it seems there are versions of clang in some distros that try to use the
5866 # gcc headers, which explodes for stdatomic
5867 # so we also check that atomics actually work here
5868 check_builtin stdatomic stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0); foo += bar"
5869
5870 check_lib advapi32 "windows.h"            RegCloseKey          -ladvapi32
5871 check_lib bcrypt   "windows.h bcrypt.h"   BCryptGenRandom      -lbcrypt &&
5872     check_cpp_condition bcrypt bcrypt.h "defined BCRYPT_RNG_ALGORITHM"
5873 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
5874 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
5875 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
5876
5877 check_lib android android/native_window.h ANativeWindow_acquire -landroid
5878 check_lib mediandk "stdint.h media/NdkImage.h" AImage_delete -lmediandk
5879 check_lib camera2ndk "stdbool.h stdint.h camera/NdkCameraManager.h" ACameraManager_create -lcamera2ndk
5880
5881 enabled appkit       && check_apple_framework AppKit
5882 enabled audiotoolbox && check_apple_framework AudioToolbox
5883 enabled avfoundation && check_apple_framework AVFoundation
5884 enabled coreimage    && check_apple_framework CoreImage
5885 enabled videotoolbox && check_apple_framework VideoToolbox
5886
5887 check_apple_framework CoreFoundation
5888 check_apple_framework CoreMedia
5889 check_apple_framework CoreVideo
5890
5891 enabled avfoundation && {
5892     disable coregraphics applicationservices
5893     check_lib coregraphics        CoreGraphics/CoreGraphics.h               CGGetActiveDisplayList "-framework CoreGraphics" ||
5894     check_lib applicationservices ApplicationServices/ApplicationServices.h CGGetActiveDisplayList "-framework ApplicationServices"; }
5895
5896 enabled videotoolbox && {
5897     check_lib coreservices CoreServices/CoreServices.h UTGetOSTypeFromString "-framework CoreServices"
5898     check_func_headers CoreMedia/CMFormatDescription.h kCMVideoCodecType_HEVC "-framework CoreMedia"
5899 }
5900
5901 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5902
5903 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5904 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5905 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5906 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5907 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5908
5909 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
5910 check_type "va/va.h va/va_dec_vp8.h" "VAPictureParameterBufferVP8"
5911 check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
5912 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
5913 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
5914 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
5915 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
5916 check_type "va/va.h va/va_enc_mpeg2.h" "VAEncPictureParameterBufferMPEG2"
5917 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
5918 check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
5919
5920 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5921
5922 if ! disabled ffnvcodec; then
5923     check_pkg_config ffnvcodec "ffnvcodec >= 8.1.24.2" \
5924           "ffnvcodec/nvEncodeAPI.h ffnvcodec/dynlink_cuda.h ffnvcodec/dynlink_cuviddec.h ffnvcodec/dynlink_nvcuvid.h" "" || \
5925       check_pkg_config ffnvcodec "ffnvcodec >= 8.0.14.2 ffnvcodec < 8.1" \
5926           "ffnvcodec/nvEncodeAPI.h ffnvcodec/dynlink_cuda.h ffnvcodec/dynlink_cuviddec.h ffnvcodec/dynlink_nvcuvid.h" ""
5927 fi
5928
5929 check_cpp_condition winrt windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)"
5930
5931 if ! disabled w32threads && ! enabled pthreads; then
5932     check_func_headers "windows.h process.h" _beginthreadex &&
5933         check_type "windows.h" CONDITION_VARIABLE &&
5934         check_type "windows.h" INIT_ONCE &&
5935         enable w32threads || disable w32threads
5936     if ! enabled w32threads && enabled winrt; then
5937         check_func_headers "windows.h" CreateThread &&
5938             enable w32threads || disable w32threads
5939     fi
5940 fi
5941
5942 # check for some common methods of building with pthread support
5943 # do this before the optional library checks as some of them require pthreads
5944 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5945     if check_lib pthreads pthread.h pthread_join   -pthread &&
5946        check_lib pthreads pthread.h pthread_create -pthread; then
5947         add_cflags -pthread
5948     elif check_lib pthreads pthread.h pthread_join   -pthreads &&
5949          check_lib pthreads pthread.h pthread_create -pthreads; then
5950         add_cflags -pthreads
5951     elif check_lib pthreads pthread.h pthread_join   -ldl -pthread &&
5952          check_lib pthreads pthread.h pthread_create -ldl -pthread; then
5953         add_cflags -ldl -pthread
5954     elif check_lib pthreads pthread.h pthread_join   -lpthreadGC2 &&
5955          check_lib pthreads pthread.h pthread_create -lpthreadGC2; then
5956         :
5957     elif check_lib pthreads pthread.h pthread_join   -lpthread &&
5958          check_lib pthreads pthread.h pthread_create -lpthread; then
5959         :
5960     elif check_func pthread_join && check_func pthread_create; then
5961         enable pthreads
5962     fi
5963     check_cc pthreads "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER"
5964
5965     if enabled pthreads; then
5966         check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
5967         check_func pthread_cancel $pthreads_extralibs
5968     fi
5969 fi
5970
5971 enabled  zlib && { check_pkg_config zlib zlib "zlib.h" zlibVersion ||
5972                    check_lib zlib   zlib.h      zlibVersion    -lz; }
5973 enabled bzlib && check_lib bzlib bzlib.h BZ2_bzlibVersion    -lbz2
5974 enabled  lzma && check_lib lzma   lzma.h lzma_version_number -llzma
5975
5976 # On some systems dynamic loading requires no extra linker flags
5977 check_lib libdl dlfcn.h "dlopen dlsym" || check_lib libdl dlfcn.h "dlopen dlsym" -ldl
5978
5979 check_lib libm math.h sin -lm
5980
5981 atan2f_args=2
5982 copysign_args=2
5983 hypot_args=2
5984 ldexpf_args=2
5985 powf_args=2
5986
5987 for func in $MATH_FUNCS; do
5988     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
5989 done
5990
5991 for func in $COMPLEX_FUNCS; do
5992     eval check_complexfunc $func \${${func}_args:-1}
5993 done
5994
5995 # these are off by default, so fail if requested and not available
5996 enabled cuda_sdk          && require cuda_sdk cuda.h cuCtxCreate -lcuda
5997 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
5998 enabled decklink          && { require_header DeckLinkAPI.h &&
5999                                { test_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a060100" || die "ERROR: Decklink API version must be >= 10.6.1."; } }
6000 enabled libndi_newtek     && require_header Processing.NDI.Lib.h
6001 enabled frei0r            && require_header frei0r.h
6002 enabled gmp               && require gmp gmp.h mpz_export -lgmp
6003 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init
6004 enabled jni               && { [ $target_os = "android" ] && check_header jni.h && enabled pthreads || die "ERROR: jni not found"; }
6005 enabled ladspa            && require_header ladspa.h
6006 enabled libaom            && require_pkg_config libaom "aom >= 1.0.0" aom/aom_codec.h aom_codec_version
6007 enabled lv2               && require_pkg_config lv2 lilv-0 "lilv/lilv.h" lilv_world_new
6008 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
6009 enabled libass            && require_pkg_config libass libass ass/ass.h ass_library_init
6010 enabled libbluray         && require_pkg_config libbluray libbluray libbluray/bluray.h bd_open
6011 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
6012 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
6013                              { check_lib libcelt celt/celt.h celt_decoder_create_custom -lcelt0 ||
6014                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
6015 enabled libcaca           && require_pkg_config libcaca caca caca.h caca_create_canvas
6016 enabled libcodec2         && require libcodec2 codec2/codec2.h codec2_create -lcodec2
6017 enabled libdavs2          && require_pkg_config libdavs2 "davs2 >= 1.5.115" davs2.h davs2_decoder_open
6018 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
6019 enabled libdrm            && require_pkg_config libdrm libdrm xf86drm.h drmGetVersion
6020 enabled libfdk_aac        && { check_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
6021                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
6022                                  warn "using libfdk without pkg-config"; } }
6023 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"
6024 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_extralibs
6025 enabled fontconfig        && enable libfontconfig
6026 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
6027 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
6028 enabled libfribidi        && require_pkg_config libfribidi fribidi fribidi.h fribidi_version_info
6029 enabled libgme            && { check_pkg_config libgme libgme gme/gme.h gme_new_emu ||
6030                                require libgme gme/gme.h gme_new_emu -lgme -lstdc++; }
6031 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
6032                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
6033                                done || die "ERROR: libgsm not found"; }
6034 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc $pthreads_extralibs
6035 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
6036 enabled liblensfun        && require_pkg_config liblensfun lensfun lensfun.h lf_db_new
6037 # While it may appear that require is being used as a pkg-config
6038 # fallback for libmfx, it is actually being used to detect a different
6039 # installation route altogether.  If libmfx is installed via the Intel
6040 # Media SDK or Intel Media Server Studio, these don't come with
6041 # pkg-config support.  Instead, users should make sure that the build
6042 # can find the libraries and headers through other means.
6043 enabled libmfx            && { check_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit ||
6044                                { require libmfx "mfx/mfxvideo.h" MFXInit "-llibmfx $advapi32_extralibs" && warn "using libmfx without pkg-config"; } }
6045 enabled libmodplug        && require_pkg_config libmodplug libmodplug libmodplug/modplug.h ModPlug_Load
6046 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame $libm_extralibs
6047 enabled libmysofa         && { check_pkg_config libmysofa libmysofa mysofa.h mysofa_load ||
6048                                require libmysofa mysofa.h mysofa_load -lmysofa $zlib_extralibs; }
6049 enabled libnpp            && { check_lib libnpp npp.h nppGetLibVersion -lnppig -lnppicc -lnppc ||
6050                                check_lib libnpp npp.h nppGetLibVersion -lnppi -lnppc ||
6051                                die "ERROR: libnpp not found"; }
6052 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
6053 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
6054 enabled libopencv         && { check_header opencv2/core/core_c.h &&
6055                                { check_pkg_config libopencv opencv opencv2/core/core_c.h cvCreateImageHeader ||
6056                                  require libopencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
6057                                require_pkg_config libopencv opencv opencv/cxcore.h cvCreateImageHeader; }
6058 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
6059 enabled libopenjpeg       && { check_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version ||
6060                                { require_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } }
6061 enabled libopenmpt        && require_pkg_config libopenmpt "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create -lstdc++ && append libopenmpt_extralibs "-lstdc++"
6062 enabled libopus           && {
6063     enabled libopus_decoder && {
6064         require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
6065     }
6066     enabled libopus_encoder && {
6067         require_pkg_config libopus opus opus_multistream.h opus_multistream_surround_encoder_create
6068     }
6069 }
6070 enabled libpulse          && require_pkg_config libpulse libpulse pulse/pulseaudio.h pa_context_new
6071 enabled librsvg           && require_pkg_config librsvg librsvg-2.0 librsvg-2.0/librsvg/rsvg.h rsvg_handle_render_cairo
6072 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
6073 enabled librubberband     && require_pkg_config librubberband "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new -lstdc++ && append librubberband_extralibs "-lstdc++"
6074 enabled libshine          && require_pkg_config libshine shine shine/layer3.h shine_encode_buffer
6075 enabled libsmbclient      && { check_pkg_config libsmbclient smbclient libsmbclient.h smbc_init ||
6076                                require libsmbclient libsmbclient.h smbc_init -lsmbclient; }
6077 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy -lstdc++
6078 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
6079 enabled libssh            && require_pkg_config libssh libssh libssh/sftp.h sftp_init
6080 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init
6081 enabled libsrt            && require_pkg_config libsrt "srt >= 1.2.0" srt/srt.h srt_socket
6082 enabled libtensorflow     && require libtensorflow tensorflow/c/c_api.h TF_Version -ltensorflow
6083 enabled libtesseract      && require_pkg_config libtesseract tesseract tesseract/capi.h TessBaseAPICreate
6084 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
6085 enabled libtls            && require_pkg_config libtls libtls tls.h tls_configure
6086 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
6087                              { check_lib libtwolame twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
6088                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
6089 enabled libv4l2           && require_pkg_config libv4l2 libv4l2 libv4l2.h v4l2_ioctl
6090 enabled libvidstab        && require_pkg_config libvidstab "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
6091 enabled libvmaf           && require_pkg_config libvmaf "libvmaf >= 0.6.2" libvmaf.h compute_vmaf
6092 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
6093 enabled libvorbis         && require_pkg_config libvorbis vorbis vorbis/codec.h vorbis_info_init &&
6094                              require_pkg_config libvorbisenc vorbisenc vorbis/vorbisenc.h vorbis_encode_init
6095
6096 enabled libvpx            && {
6097     enabled libvpx_vp8_decoder && {
6098         check_pkg_config libvpx_vp8_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
6099             check_lib libvpx_vp8_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_dec_init_ver VPX_IMG_FMT_HIGHBITDEPTH" -lvpx ||
6100                 die "ERROR: libvpx decoder version must be >=1.4.0";
6101     }
6102     enabled libvpx_vp8_encoder && {
6103         check_pkg_config libvpx_vp8_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
6104             check_lib libvpx_vp8_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VPX_IMG_FMT_HIGHBITDEPTH" -lvpx ||
6105                 die "ERROR: libvpx encoder version must be >=1.4.0";
6106     }
6107     enabled libvpx_vp9_decoder && {
6108         check_pkg_config libvpx_vp9_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
6109             check_lib libvpx_vp9_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx VPX_IMG_FMT_HIGHBITDEPTH" "-lvpx $libm_extralibs"
6110     }
6111     enabled libvpx_vp9_encoder && {
6112         check_pkg_config libvpx_vp9_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
6113             check_lib libvpx_vp9_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VPX_IMG_FMT_HIGHBITDEPTH" "-lvpx $libm_extralibs"
6114     }
6115     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
6116         die "libvpx enabled but no supported decoders found"
6117     fi
6118 }
6119
6120 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
6121 enabled libwebp           && {
6122     enabled libwebp_encoder      && require_pkg_config libwebp "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
6123     enabled libwebp_anim_encoder && check_pkg_config libwebp_anim_encoder "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit; }
6124 enabled libx264           && { check_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode ||
6125                                { require libx264 "stdint.h x264.h" x264_encoder_encode "-lx264 $pthreads_extralibs $libm_extralibs" &&
6126                                  warn "using libx264 without pkg-config"; } } &&
6127                              require_cpp_condition x264.h "X264_BUILD >= 118" &&
6128                              check_cpp_condition libx262 x264.h "X264_MPEG2"
6129 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
6130                              require_cpp_condition x265.h "X265_BUILD >= 68"
6131 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode "-lxavs $pthreads_extralibs $libm_extralibs"
6132 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
6133 enabled libzimg           && require_pkg_config libzimg "zimg >= 2.7.0" zimg.h zimg_get_api_version
6134 enabled libzmq            && require_pkg_config libzmq libzmq zmq.h zmq_ctx_new
6135 enabled libzvbi           && require_pkg_config libzvbi zvbi-0.2 libzvbi.h vbi_decoder_new &&
6136                              { test_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
6137                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
6138 enabled libxml2           && require_pkg_config libxml2 libxml-2.0 libxml2/libxml/xmlversion.h xmlCheckVersion
6139 enabled mbedtls           && { check_pkg_config mbedtls mbedtls mbedtls/x509_crt.h mbedtls_x509_crt_init ||
6140                                check_pkg_config mbedtls mbedtls mbedtls/ssl.h mbedtls_ssl_init ||
6141                                check_lib mbedtls mbedtls/ssl.h mbedtls_ssl_init -lmbedtls -lmbedx509 -lmbedcrypto ||
6142                                die "ERROR: mbedTLS not found"; }
6143 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
6144 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
6145                                { ! enabled cross_compile &&
6146                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
6147                                  add_ldflags -L/opt/vc/lib/ &&
6148                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
6149                                die "ERROR: mmal not found" &&
6150                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
6151 enabled openal            && { { for al_extralibs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
6152                                check_lib openal 'AL/al.h' alGetError "${al_extralibs}" && break; done } ||
6153                                die "ERROR: openal not found"; } &&
6154                              { test_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
6155                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
6156 enabled opencl            && { check_pkg_config opencl OpenCL CL/cl.h clEnqueueNDRangeKernel ||
6157                                check_lib opencl OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
6158                                check_lib opencl CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
6159                                die "ERROR: opencl not found"; } &&
6160                              { test_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
6161                                test_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
6162                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
6163 enabled opengl            && { check_lib opengl GL/glx.h glXGetProcAddress "-lGL" ||
6164                                check_lib opengl windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
6165                                check_lib opengl OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
6166                                check_lib opengl ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
6167                                die "ERROR: opengl not found."
6168                              }
6169 enabled omx               && require_header OMX_Core.h
6170 enabled omx_rpi           && { check_header OMX_Core.h ||
6171                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_header OMX_Core.h ; } ||
6172                                die "ERROR: OpenMAX IL headers not found"; } && enable omx
6173 enabled openssl           && { check_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
6174                                check_pkg_config openssl openssl openssl/ssl.h SSL_library_init ||
6175                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
6176                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
6177                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
6178                                die "ERROR: openssl not found"; }
6179 enabled rkmpp             && { require_pkg_config rkmpp rockchip_mpp  rockchip/rk_mpi.h mpp_create &&
6180                                require_pkg_config rockchip_mpp "rockchip_mpp >= 1.3.7" rockchip/rk_mpi.h mpp_create &&
6181                                { enabled libdrm ||
6182                                  die "ERROR: rkmpp requires --enable-libdrm"; }
6183                              }
6184 enabled vapoursynth       && require_pkg_config vapoursynth "vapoursynth-script >= 42" VSScript.h vsscript_init
6185
6186
6187 if enabled gcrypt; then
6188     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
6189     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
6190         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
6191         gcrypt_extralibs=$("${GCRYPT_CONFIG}" --libs)
6192         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_extralibs ||
6193             die "ERROR: gcrypt not found"
6194         add_cflags $gcrypt_cflags
6195     else
6196         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
6197     fi
6198 fi
6199
6200 if enabled sdl2; then
6201     SDL2_CONFIG="${cross_prefix}sdl2-config"
6202     test_pkg_config sdl2 "sdl2 >= 2.0.1 sdl2 < 2.1.0" SDL_events.h SDL_PollEvent
6203     if disabled sdl2 && "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
6204         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
6205         sdl2_extralibs=$("${SDL2_CONFIG}" --libs)
6206         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
6207         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
6208         check_func_headers SDL_events.h SDL_PollEvent $sdl2_extralibs $sdl2_cflags &&
6209             enable sdl2
6210     fi
6211     if test $target_os = "mingw32"; then
6212         sdl2_extralibs=$(filter_out '-mwindows' $sdl2_extralibs)
6213     fi
6214 fi
6215
6216 if enabled decklink; then
6217     case $target_os in
6218         mingw32*|mingw64*|win32|win64)
6219             decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
6220             decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
6221             ;;
6222     esac
6223 fi
6224
6225 enabled securetransport &&
6226     check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
6227     check_lib securetransport "Security/SecureTransport.h Security/Security.h" "SSLCreateContext" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" ||
6228         disable securetransport
6229
6230 enabled securetransport &&
6231     check_func SecItemImport "-Wl,-framework,CoreFoundation -Wl,-framework,Security"
6232
6233 enabled schannel &&
6234     check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
6235     test_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" &&
6236     schannel_extralibs="-lsecur32" ||
6237         disable schannel
6238
6239 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
6240 enabled makeinfo \
6241     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
6242     && enable makeinfo_html || disable makeinfo_html
6243 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
6244 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
6245 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
6246 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
6247
6248 # check V4L2 codecs available in the API
6249 check_header linux/fb.h
6250 check_header linux/videodev2.h
6251 test_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6252 check_cc v4l2_m2m linux/videodev2.h "int i = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_VIDEO_M2M | V4L2_BUF_FLAG_LAST;"
6253 check_cc vc1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VC1_ANNEX_G;"
6254 check_cc mpeg1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG1;"
6255 check_cc mpeg2_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG2;"
6256 check_cc mpeg4_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG4;"
6257 check_cc hevc_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_HEVC;"
6258 check_cc h263_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H263;"
6259 check_cc h264_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H264;"
6260 check_cc vp8_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP8;"
6261 check_cc vp9_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP9;"
6262
6263 check_header sys/videoio.h
6264 test_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6265
6266 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
6267 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
6268 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
6269 # w32api 3.12 had it defined wrong
6270 check_cpp_condition vfwcap_defines vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER"
6271
6272 check_type "dshow.h" IBaseFilter
6273
6274 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
6275 check_header "dev/bktr/ioctl_meteor.h dev/bktr/ioctl_bt848.h"                   ||
6276     check_header "machine/ioctl_meteor.h machine/ioctl_bt848.h"                 ||
6277     check_header "dev/video/meteor/ioctl_meteor.h dev/video/bktr/ioctl_bt848.h" ||
6278     check_header "dev/ic/bt8xx.h"
6279
6280 if check_struct sys/soundcard.h audio_buf_info bytes; then
6281     enable_sanitized sys/soundcard.h
6282 else
6283     test_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_sanitized sys/soundcard.h
6284     #include <sys/soundcard.h>
6285     audio_buf_info abc;
6286 EOF
6287 fi
6288
6289 enabled alsa && check_pkg_config alsa alsa "alsa/asoundlib.h" snd_pcm_htimestamp ||
6290     check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound
6291
6292 enabled libjack &&
6293     require_pkg_config libjack jack jack/jack.h jack_port_get_latency_range
6294
6295 enabled sndio && check_lib sndio sndio.h sio_open -lsndio
6296
6297 if enabled libcdio; then
6298     check_pkg_config libcdio libcdio_paranoia "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open ||
6299     check_pkg_config libcdio libcdio_paranoia "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open ||
6300     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6301     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6302     die "ERROR: No usable libcdio/cdparanoia found"
6303 fi
6304
6305 enabled libxcb && check_pkg_config libxcb "xcb >= 1.4" xcb/xcb.h xcb_connect ||
6306     disable libxcb_shm libxcb_shape libxcb_xfixes
6307
6308 if enabled libxcb; then
6309     enabled libxcb_shm    && check_pkg_config libxcb_shm    xcb-shm    xcb/shm.h    xcb_shm_attach
6310     enabled libxcb_shape  && check_pkg_config libxcb_shape  xcb-shape  xcb/shape.h  xcb_shape_get_rectangles
6311     enabled libxcb_xfixes && check_pkg_config libxcb_xfixes xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image
6312 fi
6313
6314 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6315
6316 # d3d11va requires linking directly to dxgi and d3d11 if not building for
6317 # the desktop api partition
6318 test_cpp <<EOF && enable uwp && d3d11va_extralibs="-ldxgi -ld3d11"
6319 #ifdef WINAPI_FAMILY
6320 #include <winapifamily.h>
6321 #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
6322 #error desktop, not uwp
6323 #else
6324 // WINAPI_FAMILY_APP, WINAPI_FAMILY_PHONE_APP => UWP
6325 #endif
6326 #else
6327 #error no family set
6328 #endif
6329 EOF
6330
6331 enabled vaapi &&
6332     check_lib vaapi va/va.h vaInitialize -lva
6333
6334 enabled vaapi &&
6335     check_cc vaapi "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)"
6336
6337 if enabled vaapi; then
6338     check_lib vaapi_drm "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm
6339     check_lib vaapi_x11 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 -lX11
6340 fi
6341
6342 enabled vaapi &&
6343     check_cpp_condition vaapi_1 "va/va.h" "VA_CHECK_VERSION(1, 0, 0)"
6344
6345 if enabled_all opencl libdrm ; then
6346     check_type "CL/cl_intel.h" "clCreateImageFromFdINTEL_fn" &&
6347         enable opencl_drm_beignet
6348     check_func_headers "CL/cl_ext.h" clImportMemoryARM &&
6349         enable opencl_drm_arm
6350 fi
6351
6352 if enabled_all opencl vaapi ; then
6353     enabled opencl_drm_beignet && enable opencl_vaapi_beignet
6354     check_type "CL/cl.h CL/va_ext.h" "clCreateFromVA_APIMediaSurfaceINTEL_fn" &&
6355         enable opencl_vaapi_intel_media
6356 fi
6357
6358 if enabled_all opencl dxva2 ; then
6359     check_type "CL/cl_dx9_media_sharing.h" cl_dx9_surface_info_khr &&
6360         enable opencl_dxva2
6361 fi
6362
6363 if enabled_all opencl d3d11va ; then
6364     check_type "CL/cl_d3d11.h" clGetDeviceIDsFromD3D11KHR_fn &&
6365         enable opencl_d3d11
6366 fi
6367
6368 enabled vdpau &&
6369     check_cpp_condition vdpau vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP"
6370
6371 enabled vdpau &&
6372     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
6373
6374 enabled crystalhd && check_lib crystalhd "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd
6375
6376 if enabled x86; then
6377     case $target_os in
6378         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6379             ;;
6380         *)
6381             disable ffnvcodec cuvid nvdec nvenc
6382             ;;
6383     esac
6384 else
6385     disable ffnvcodec cuvid nvdec nvenc
6386 fi
6387
6388 enabled ffnvcodec && enable cuda
6389
6390 enabled nvenc &&
6391     test_cc -I$source_path <<EOF || disable nvenc
6392 #include <ffnvcodec/nvEncodeAPI.h>
6393 NV_ENCODE_API_FUNCTION_LIST flist;
6394 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6395 int main(void) { return 0; }
6396 EOF
6397
6398 enabled amf &&
6399     check_cpp_condition amf "AMF/core/Version.h" \
6400         "(AMF_VERSION_MAJOR << 48 | AMF_VERSION_MINOR << 32 | AMF_VERSION_RELEASE << 16 | AMF_VERSION_BUILD_NUM) >= 0x0001000400040001"
6401
6402 # Funny iconv installations are not unusual, so check it after all flags have been set
6403 if enabled libc_iconv; then
6404     check_func_headers iconv.h iconv
6405 elif enabled iconv; then
6406     check_func_headers iconv.h iconv || check_lib iconv iconv.h iconv -liconv
6407 fi
6408
6409 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6410
6411 # add some useful compiler flags if supported
6412 check_cflags -Wdeclaration-after-statement
6413 check_cflags -Wall
6414 check_cflags -Wdisabled-optimization
6415 check_cflags -Wpointer-arith
6416 check_cflags -Wredundant-decls
6417 check_cflags -Wwrite-strings
6418 check_cflags -Wtype-limits
6419 check_cflags -Wundef
6420 check_cflags -Wmissing-prototypes
6421 check_cflags -Wno-pointer-to-int-cast
6422 check_cflags -Wstrict-prototypes
6423 check_cflags -Wempty-body
6424
6425 if enabled extra_warnings; then
6426     check_cflags -Wcast-qual
6427     check_cflags -Wextra
6428     check_cflags -Wpedantic
6429 fi
6430
6431 check_disable_warning(){
6432     warning_flag=-W${1#-Wno-}
6433     test_cflags $unknown_warning_flags $warning_flag && add_cflags $1
6434 }
6435
6436 test_cflags -Werror=unused-command-line-argument &&
6437     append unknown_warning_flags "-Werror=unused-command-line-argument"
6438 test_cflags -Werror=unknown-warning-option &&
6439     append unknown_warning_flags "-Werror=unknown-warning-option"
6440
6441 check_disable_warning -Wno-parentheses
6442 check_disable_warning -Wno-switch
6443 check_disable_warning -Wno-format-zero-length
6444 check_disable_warning -Wno-pointer-sign
6445 check_disable_warning -Wno-unused-const-variable
6446 check_disable_warning -Wno-bool-operation
6447
6448 check_disable_warning_headers(){
6449     warning_flag=-W${1#-Wno-}
6450     test_cflags $warning_flag && add_cflags_headers $1
6451 }
6452
6453 check_disable_warning_headers -Wno-deprecated-declarations
6454 check_disable_warning_headers -Wno-unused-variable
6455
6456 test_cc <<EOF && enable blocks_extension
6457 void (^block)(void);
6458 EOF
6459
6460 # add some linker flags
6461 check_ldflags -Wl,--warn-common
6462 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6463 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir && add_ldsoflags -Wl,-rpath,$libdir
6464 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6465
6466 # add some strip flags
6467 check_stripflags -x
6468
6469 enabled neon_clobber_test &&
6470     check_ldflags -Wl,--wrap,avcodec_open2              \
6471                   -Wl,--wrap,avcodec_decode_audio4      \
6472                   -Wl,--wrap,avcodec_decode_video2      \
6473                   -Wl,--wrap,avcodec_decode_subtitle2   \
6474                   -Wl,--wrap,avcodec_encode_audio2      \
6475                   -Wl,--wrap,avcodec_encode_video2      \
6476                   -Wl,--wrap,avcodec_encode_subtitle    \
6477                   -Wl,--wrap,avcodec_send_packet        \
6478                   -Wl,--wrap,avcodec_receive_packet     \
6479                   -Wl,--wrap,avcodec_send_frame         \
6480                   -Wl,--wrap,avcodec_receive_frame      \
6481                   -Wl,--wrap,swr_convert                \
6482                   -Wl,--wrap,avresample_convert ||
6483     disable neon_clobber_test
6484
6485 enabled xmm_clobber_test &&
6486     check_ldflags -Wl,--wrap,avcodec_open2              \
6487                   -Wl,--wrap,avcodec_decode_audio4      \
6488                   -Wl,--wrap,avcodec_decode_video2      \
6489                   -Wl,--wrap,avcodec_decode_subtitle2   \
6490                   -Wl,--wrap,avcodec_encode_audio2      \
6491                   -Wl,--wrap,avcodec_encode_video2      \
6492                   -Wl,--wrap,avcodec_encode_subtitle    \
6493                   -Wl,--wrap,avcodec_send_packet        \
6494                   -Wl,--wrap,avcodec_receive_packet     \
6495                   -Wl,--wrap,avcodec_send_frame         \
6496                   -Wl,--wrap,avcodec_receive_frame      \
6497                   -Wl,--wrap,swr_convert                \
6498                   -Wl,--wrap,avresample_convert         \
6499                   -Wl,--wrap,sws_scale ||
6500     disable xmm_clobber_test
6501
6502 check_ld "cc" proper_dce <<EOF
6503 extern const int array[512];
6504 static inline int func(void) { return array[0]; }
6505 int main(void) { return 0; }
6506 EOF
6507
6508 if enabled proper_dce; then
6509     echo "X { local: *; };" > $TMPV
6510     if test_ldflags -Wl,${version_script},$TMPV; then
6511         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6512         quotes='""'
6513         test_cc <<EOF && enable symver_asm_label
6514 void ff_foo(void) __asm__ ("av_foo@VERSION");
6515 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6516 EOF
6517         test_cc <<EOF && enable symver_gnu_asm
6518 __asm__(".symver ff_foo,av_foo@VERSION");
6519 void ff_foo(void) {}
6520 EOF
6521     fi
6522 fi
6523
6524 if [ -z "$optflags" ]; then
6525     if enabled small; then
6526         optflags=$cflags_size
6527     elif enabled optimizations; then
6528         optflags=$cflags_speed
6529     else
6530         optflags=$cflags_noopt
6531     fi
6532 fi
6533
6534 if [ -z "$nvccflags" ]; then
6535     nvccflags=$nvccflags_default
6536 fi
6537
6538 if enabled x86_64 || enabled ppc64 || enabled aarch64; then
6539     nvccflags="$nvccflags -m64"
6540 else
6541     nvccflags="$nvccflags -m32"
6542 fi
6543
6544 check_optflags(){
6545     check_cflags "$@"
6546     enabled lto && check_ldflags "$@"
6547 }
6548
6549 check_optflags $optflags
6550 check_optflags -fno-math-errno
6551 check_optflags -fno-signed-zeros
6552
6553 if enabled lto; then
6554     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6555     check_cflags  -flto
6556     check_ldflags -flto $cpuflags
6557     disable inline_asm_direct_symbol_refs
6558 fi
6559
6560 enabled ftrapv && check_cflags -ftrapv
6561
6562 test_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6563 int x;
6564 EOF
6565
6566
6567 if enabled icc; then
6568     # Just warnings, no remarks
6569     check_cflags -w1
6570     # -wd: Disable following warnings
6571     # 144, 167, 556: -Wno-pointer-sign
6572     # 188: enumerated type mixed with another type
6573     # 1292: attribute "foo" ignored
6574     # 1419: external declaration in primary source file
6575     # 10006: ignoring unknown option -fno-signed-zeros
6576     # 10148: ignoring unknown option -Wno-parentheses
6577     # 10156: ignoring option '-W'; no argument required
6578     # 13200: No EMMS instruction before call to function
6579     # 13203: No EMMS instruction before return from function
6580     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6581     # 11030: Warning unknown option --as-needed
6582     # 10156: ignoring option '-export'; no argument required
6583     check_ldflags -wd10156,11030
6584     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6585     enable ebp_available
6586     # The test above does not test linking
6587     enabled lto && disable symver_asm_label
6588     if enabled x86_32; then
6589         icc_version=$($cc -dumpversion)
6590         test ${icc_version%%.*} -ge 11 &&
6591             check_cflags -falign-stack=maintain-16-byte ||
6592             disable aligned_stack
6593     fi
6594 elif enabled gcc; then
6595     check_optflags -fno-tree-vectorize
6596     check_cflags -Werror=format-security
6597     check_cflags -Werror=implicit-function-declaration
6598     check_cflags -Werror=missing-prototypes
6599     check_cflags -Werror=return-type
6600     check_cflags -Werror=vla
6601     check_cflags -Wformat
6602     check_cflags -fdiagnostics-color=auto
6603     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6604     if enabled x86_32; then
6605         case $target_os in
6606         *bsd*)
6607             # BSDs don't guarantee a 16 byte aligned stack, but we can
6608             # request GCC to try to maintain 16 byte alignment throughout
6609             # function calls. Library entry points that might call assembly
6610             # functions align the stack. (The parameter means 2^4 bytes.)
6611             check_cflags -mpreferred-stack-boundary=4
6612             ;;
6613         esac
6614     fi
6615 elif enabled llvm_gcc; then
6616     check_cflags -mllvm -stack-alignment=16
6617 elif enabled clang; then
6618     if enabled x86_32; then
6619         # Clang doesn't support maintaining alignment without assuming the
6620         # same alignment in every function. If 16 byte alignment would be
6621         # enabled, one would also have to either add attribute_align_arg on
6622         # every single entry point into the libraries or enable -mstackrealign
6623         # (doing stack realignment in every single function).
6624         case $target_os in
6625         mingw32|win32|*bsd*)
6626             disable aligned_stack
6627             ;;
6628         *)
6629             check_cflags -mllvm -stack-alignment=16
6630             check_cflags -mstack-alignment=16
6631             ;;
6632         esac
6633     else
6634         check_cflags -mllvm -stack-alignment=16
6635         check_cflags -mstack-alignment=16
6636     fi
6637     check_cflags -Qunused-arguments
6638     check_cflags -Werror=implicit-function-declaration
6639     check_cflags -Werror=missing-prototypes
6640     check_cflags -Werror=return-type
6641 elif enabled cparser; then
6642     add_cflags -Wno-missing-variable-declarations
6643     add_cflags -Wno-empty-statement
6644 elif enabled armcc; then
6645     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6646     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6647     # 2523: use of inline assembly is deprecated
6648     add_cflags -W${armcc_opt},--diag_suppress=2523
6649     add_cflags -W${armcc_opt},--diag_suppress=1207
6650     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6651     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6652     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6653     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6654 elif enabled pathscale; then
6655     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6656     disable inline_asm
6657 elif enabled_any msvc icl; then
6658     enabled x86_32 && disable aligned_stack
6659     enabled_all x86_32 debug && add_cflags -Oy-
6660     enabled debug && add_ldflags -debug
6661     enable pragma_deprecated
6662     if enabled icl; then
6663         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6664         # (correctly) on icl 13.x.
6665         test_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6666             add_cflags -Qansi-alias
6667         # Some inline asm is not compilable in debug
6668         if enabled debug; then
6669             disable ebp_available
6670             disable ebx_available
6671         fi
6672     fi
6673     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6674     check_cpp_condition log2 crtversion.h "_VC_CRT_MAJOR_VERSION >= 12"
6675     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6676     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6677     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6678     # MSVC 2013 and newer can handle it fine.
6679     # If this declspec fails, force including stdlib.h before the restrict redefinition
6680     # happens in config.h.
6681     if [ $restrict_keyword != restrict ]; then
6682         test_cc <<EOF || add_cflags -FIstdlib.h
6683 __declspec($restrict_keyword) void *foo(int);
6684 EOF
6685     fi
6686     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6687     # Issue has been fixed in MSVC v19.00.24218.
6688     test_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6689         check_cflags -d2SSAOptimizer-
6690     # enable utf-8 source processing on VS2015 U2 and newer
6691     test_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6692         add_cflags -utf-8
6693 fi
6694
6695 for pfx in "" host_; do
6696     varname=${pfx%_}cc_type
6697     eval "type=\$$varname"
6698     if [ "$type" = "msvc" ]; then
6699         test_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6700 static inline int foo(int a) { return a; }
6701 EOF
6702     fi
6703 done
6704
6705 case $as_type in
6706     clang)
6707         add_asflags -Qunused-arguments
6708     ;;
6709 esac
6710
6711 case $ld_type in
6712     clang)
6713         check_ldflags -Qunused-arguments
6714     ;;
6715 esac
6716
6717 enable frame_thread_encoder
6718
6719 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6720
6721 check_deps $CONFIG_LIST       \
6722            $CONFIG_EXTRA      \
6723            $HAVE_LIST         \
6724            $ALL_COMPONENTS    \
6725
6726 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"
6727 enabled avresample && warn "Building with deprecated library libavresample"
6728
6729 if test $target_os = "haiku"; then
6730     disable memalign
6731     disable posix_memalign
6732 fi
6733
6734 flatten_extralibs(){
6735     unset nested_entries
6736     list_name=$1
6737     eval list=\$${1}
6738     for entry in $list; do
6739         entry_copy=$entry
6740         resolve entry_copy
6741         append nested_entries $(filter '*_extralibs' $entry_copy)
6742         flat_entries=$(filter_out '*_extralibs' $entry_copy)
6743         eval $entry="\$flat_entries"
6744     done
6745     append $list_name "$nested_entries"
6746
6747     resolve nested_entries
6748     if test -n "$(filter '*_extralibs' $nested_entries)"; then
6749         flatten_extralibs $list_name
6750     fi
6751 }
6752
6753 flatten_extralibs_wrapper(){
6754     list_name=$1
6755     flatten_extralibs $list_name
6756     unique $list_name
6757     resolve $list_name
6758     eval $list_name=\$\(\$ldflags_filter \$$list_name\)
6759     eval printf \''%s'\' \""\$$list_name"\"
6760 }
6761
6762 for linkunit in $LIBRARY_LIST; do
6763     unset current_extralibs
6764     eval components=\$$(toupper ${linkunit})_COMPONENTS_LIST
6765     for comp in ${components}; do
6766         enabled $comp || continue
6767         comp_extralibs="${comp}_extralibs"
6768         append current_extralibs $comp_extralibs
6769     done
6770     eval prepend ${linkunit}_extralibs $current_extralibs
6771 done
6772
6773 for linkunit in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
6774     eval ${linkunit}_extralibs=\$\(flatten_extralibs_wrapper ${linkunit}_extralibs\)
6775 done
6776
6777 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6778
6779 for thread in $THREADS_LIST; do
6780     if enabled $thread; then
6781         test -n "$thread_type" &&
6782             die "ERROR: Only one thread type must be selected." ||
6783             thread_type="$thread"
6784     fi
6785 done
6786
6787 if disabled stdatomic; then
6788     if enabled atomics_gcc; then
6789         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
6790     elif enabled atomics_win32; then
6791         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
6792     elif enabled atomics_suncc; then
6793         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
6794     elif enabled pthreads; then
6795         add_compat atomics/pthread/stdatomic.o
6796         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
6797     else
6798         enabled threads && die "Threading is enabled, but no atomics are available"
6799         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
6800     fi
6801 fi
6802
6803 # Check if requested libraries were found.
6804 for lib in $AUTODETECT_LIBS; do
6805     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
6806 done
6807
6808 enabled zlib && add_cppflags -DZLIB_CONST
6809
6810 # conditional library dependencies, in linking order
6811 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6812 enabled afir_filter         && prepend avfilter_deps "avcodec"
6813 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6814 enabled aresample_filter    && prepend avfilter_deps "swresample"
6815 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6816 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6817 enabled convolve_filter     && prepend avfilter_deps "avcodec"
6818 enabled deconvolve_filter   && prepend avfilter_deps "avcodec"
6819 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6820 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6821 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6822 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6823 enabled firequalizer_filter && prepend avfilter_deps "avcodec"
6824 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6825 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6826 enabled pan_filter          && prepend avfilter_deps "swresample"
6827 enabled pp_filter           && prepend avfilter_deps "postproc"
6828 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6829 enabled resample_filter && prepend avfilter_deps "avresample"
6830 enabled sab_filter          && prepend avfilter_deps "swscale"
6831 enabled scale_filter    && prepend avfilter_deps "swscale"
6832 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6833 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6834 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6835 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6836 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6837 enabled signature_filter    && prepend avfilter_deps "avcodec avformat"
6838 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6839 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6840 enabled spp_filter          && prepend avfilter_deps "avcodec"
6841 enabled sr_filter           && prepend avfilter_deps "avformat swscale"
6842 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6843 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6844 enabled zoompan_filter      && prepend avfilter_deps "swscale"
6845
6846 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6847
6848 #FIXME
6849 enabled sdl2_outdev     && add_cflags $(filter_out '-Dmain=SDL_main' $sdl2_cflags)
6850
6851 enabled opus_decoder    && prepend avcodec_deps "swresample"
6852
6853 expand_deps(){
6854     lib_deps=${1}_deps
6855     eval "deps=\$$lib_deps"
6856     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
6857     unique $lib_deps
6858 }
6859
6860 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6861 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6862
6863 map 'expand_deps $v' $LIBRARY_LIST
6864
6865 if test "$quiet" != "yes"; then
6866
6867 echo "install prefix            $prefix"
6868 echo "source path               $source_path"
6869 echo "C compiler                $cc"
6870 echo "C library                 $libc_type"
6871 if test "$host_cc" != "$cc"; then
6872     echo "host C compiler           $host_cc"
6873     echo "host C library            $host_libc_type"
6874 fi
6875 echo "ARCH                      $arch ($cpu)"
6876 if test "$build_suffix" != ""; then
6877     echo "build suffix              $build_suffix"
6878 fi
6879 if test "$progs_suffix" != ""; then
6880     echo "progs suffix              $progs_suffix"
6881 fi
6882 if test "$extra_version" != ""; then
6883     echo "version string suffix     $extra_version"
6884 fi
6885 echo "big-endian                ${bigendian-no}"
6886 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6887 if enabled x86; then
6888     echo "standalone assembly       ${x86asm-no}"
6889     echo "x86 assembler             ${x86asmexe}"
6890     echo "MMX enabled               ${mmx-no}"
6891     echo "MMXEXT enabled            ${mmxext-no}"
6892     echo "3DNow! enabled            ${amd3dnow-no}"
6893     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6894     echo "SSE enabled               ${sse-no}"
6895     echo "SSSE3 enabled             ${ssse3-no}"
6896     echo "AESNI enabled             ${aesni-no}"
6897     echo "AVX enabled               ${avx-no}"
6898     echo "AVX2 enabled              ${avx2-no}"
6899     echo "AVX-512 enabled           ${avx512-no}"
6900     echo "XOP enabled               ${xop-no}"
6901     echo "FMA3 enabled              ${fma3-no}"
6902     echo "FMA4 enabled              ${fma4-no}"
6903     echo "i686 features enabled     ${i686-no}"
6904     echo "CMOV is fast              ${fast_cmov-no}"
6905     echo "EBX available             ${ebx_available-no}"
6906     echo "EBP available             ${ebp_available-no}"
6907 fi
6908 if enabled aarch64; then
6909     echo "NEON enabled              ${neon-no}"
6910     echo "VFP enabled               ${vfp-no}"
6911 fi
6912 if enabled arm; then
6913     echo "ARMv5TE enabled           ${armv5te-no}"
6914     echo "ARMv6 enabled             ${armv6-no}"
6915     echo "ARMv6T2 enabled           ${armv6t2-no}"
6916     echo "VFP enabled               ${vfp-no}"
6917     echo "NEON enabled              ${neon-no}"
6918     echo "THUMB enabled             ${thumb-no}"
6919 fi
6920 if enabled mips; then
6921     echo "MIPS FPU enabled          ${mipsfpu-no}"
6922     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
6923     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
6924     echo "MIPS MSA enabled          ${msa-no}"
6925     echo "LOONGSON MMI enabled      ${mmi-no}"
6926 fi
6927 if enabled ppc; then
6928     echo "AltiVec enabled           ${altivec-no}"
6929     echo "VSX enabled               ${vsx-no}"
6930     echo "POWER8 enabled            ${power8-no}"
6931     echo "PPC 4xx optimizations     ${ppc4xx-no}"
6932     echo "dcbzl available           ${dcbzl-no}"
6933 fi
6934 echo "debug symbols             ${debug-no}"
6935 echo "strip symbols             ${stripping-no}"
6936 echo "optimize for size         ${small-no}"
6937 echo "optimizations             ${optimizations-no}"
6938 echo "static                    ${static-no}"
6939 echo "shared                    ${shared-no}"
6940 echo "postprocessing support    ${postproc-no}"
6941 echo "network support           ${network-no}"
6942 echo "threading support         ${thread_type-no}"
6943 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
6944 echo "texi2html enabled         ${texi2html-no}"
6945 echo "perl enabled              ${perl-no}"
6946 echo "pod2man enabled           ${pod2man-no}"
6947 echo "makeinfo enabled          ${makeinfo-no}"
6948 echo "makeinfo supports HTML    ${makeinfo_html-no}"
6949 test -n "$random_seed" &&
6950     echo "random seed               ${random_seed}"
6951 echo
6952
6953 echo "External libraries:"
6954 print_enabled '' $EXTERNAL_LIBRARY_LIST $EXTERNAL_AUTODETECT_LIBRARY_LIST | print_in_columns
6955 echo
6956
6957 echo "External libraries providing hardware acceleration:"
6958 print_enabled '' $HWACCEL_LIBRARY_LIST $HWACCEL_AUTODETECT_LIBRARY_LIST | print_in_columns
6959 echo
6960
6961 echo "Libraries:"
6962 print_enabled '' $LIBRARY_LIST | print_in_columns
6963 echo
6964
6965 echo "Programs:"
6966 print_enabled '' $PROGRAM_LIST | print_in_columns
6967 echo
6968
6969 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
6970     echo "Enabled ${type}s:"
6971     eval list=\$$(toupper $type)_LIST
6972     print_enabled '_*' $list | print_in_columns
6973     echo
6974 done
6975
6976 if test -n "$ignore_tests"; then
6977     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
6978     echo "Ignored FATE tests:"
6979     echo $ignore_tests | print_in_columns
6980     echo
6981 fi
6982
6983 echo "License: $license"
6984
6985 fi # test "$quiet" != "yes"
6986
6987 if test -n "$WARNINGS"; then
6988     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
6989     enabled fatal_warnings && exit 1
6990 fi
6991
6992 test -e Makefile || echo "include $source_path/Makefile" > Makefile
6993
6994 esc(){
6995     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
6996 }
6997
6998 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" > ffbuild/config.fate
6999
7000 enabled stripping || strip="echo skipping strip"
7001 enabled stripping || striptype=""
7002
7003 config_files="$TMPH ffbuild/config.mak doc/config.texi"
7004
7005 cat > ffbuild/config.mak <<EOF
7006 # Automatically generated by configure - do not modify!
7007 ifndef FFMPEG_CONFIG_MAK
7008 FFMPEG_CONFIG_MAK=1
7009 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
7010 prefix=$prefix
7011 LIBDIR=\$(DESTDIR)$libdir
7012 SHLIBDIR=\$(DESTDIR)$shlibdir
7013 INCDIR=\$(DESTDIR)$incdir
7014 BINDIR=\$(DESTDIR)$bindir
7015 DATADIR=\$(DESTDIR)$datadir
7016 DOCDIR=\$(DESTDIR)$docdir
7017 MANDIR=\$(DESTDIR)$mandir
7018 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
7019 INSTALL_NAME_DIR=$install_name_dir
7020 SRC_PATH=$source_path
7021 SRC_LINK=$source_link
7022 ifndef MAIN_MAKEFILE
7023 SRC_PATH:=\$(SRC_PATH:.%=..%)
7024 endif
7025 CC_IDENT=$cc_ident
7026 ARCH=$arch
7027 INTRINSICS=$intrinsics
7028 EXTERN_PREFIX=$extern_prefix
7029 CC=$cc
7030 CXX=$cxx
7031 AS=$as
7032 OBJCC=$objcc
7033 LD=$ld
7034 DEPCC=$dep_cc
7035 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
7036 DEPAS=$as
7037 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
7038 X86ASM=$x86asmexe
7039 DEPX86ASM=$x86asmexe
7040 DEPX86ASMFLAGS=\$(X86ASMFLAGS)
7041 AR=$ar
7042 ARFLAGS=$arflags
7043 AR_O=$ar_o
7044 AR_CMD=$ar
7045 NM_CMD=$nm
7046 RANLIB=$ranlib
7047 STRIP=$strip
7048 STRIPTYPE=$striptype
7049 NVCC=$nvcc
7050 CP=cp -p
7051 LN_S=$ln_s
7052 CPPFLAGS=$CPPFLAGS
7053 CFLAGS=$CFLAGS
7054 CXXFLAGS=$CXXFLAGS
7055 OBJCFLAGS=$OBJCFLAGS
7056 ASFLAGS=$ASFLAGS
7057 NVCCFLAGS=$nvccflags
7058 AS_C=$AS_C
7059 AS_O=$AS_O
7060 OBJCC_C=$OBJCC_C
7061 OBJCC_E=$OBJCC_E
7062 OBJCC_O=$OBJCC_O
7063 CC_C=$CC_C
7064 CC_E=$CC_E
7065 CC_O=$CC_O
7066 CXX_C=$CXX_C
7067 CXX_O=$CXX_O
7068 NVCC_C=$NVCC_C
7069 NVCC_O=$NVCC_O
7070 LD_O=$LD_O
7071 X86ASM_O=$X86ASM_O
7072 LD_LIB=$LD_LIB
7073 LD_PATH=$LD_PATH
7074 DLLTOOL=$dlltool
7075 WINDRES=$windres
7076 DEPWINDRES=$dep_cc
7077 DOXYGEN=$doxygen
7078 LDFLAGS=$LDFLAGS
7079 LDEXEFLAGS=$LDEXEFLAGS
7080 LDSOFLAGS=$LDSOFLAGS
7081 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
7082 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
7083 X86ASMFLAGS=$X86ASMFLAGS
7084 BUILDSUF=$build_suffix
7085 PROGSSUF=$progs_suffix
7086 FULLNAME=$FULLNAME
7087 LIBPREF=$LIBPREF
7088 LIBSUF=$LIBSUF
7089 LIBNAME=$LIBNAME
7090 SLIBPREF=$SLIBPREF
7091 SLIBSUF=$SLIBSUF
7092 EXESUF=$EXESUF
7093 EXTRA_VERSION=$extra_version
7094 CCDEP=$CCDEP
7095 CXXDEP=$CXXDEP
7096 CCDEP_FLAGS=$CCDEP_FLAGS
7097 ASDEP=$ASDEP
7098 ASDEP_FLAGS=$ASDEP_FLAGS
7099 X86ASMDEP=$X86ASMDEP
7100 X86ASMDEP_FLAGS=$X86ASMDEP_FLAGS
7101 CC_DEPFLAGS=$CC_DEPFLAGS
7102 AS_DEPFLAGS=$AS_DEPFLAGS
7103 X86ASM_DEPFLAGS=$X86ASM_DEPFLAGS
7104 HOSTCC=$host_cc
7105 HOSTLD=$host_ld
7106 HOSTCFLAGS=$host_cflags
7107 HOSTCPPFLAGS=$host_cppflags
7108 HOSTEXESUF=$HOSTEXESUF
7109 HOSTLDFLAGS=$host_ldflags
7110 HOSTEXTRALIBS=$host_extralibs
7111 DEPHOSTCC=$host_cc
7112 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
7113 HOSTCCDEP=$HOSTCCDEP
7114 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
7115 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
7116 HOSTCC_C=$HOSTCC_C
7117 HOSTCC_O=$HOSTCC_O
7118 HOSTLD_O=$HOSTLD_O
7119 TARGET_EXEC=$target_exec $target_exec_args
7120 TARGET_PATH=$target_path
7121 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
7122 CFLAGS-ffplay=${sdl2_cflags}
7123 CFLAGS_HEADERS=$CFLAGS_HEADERS
7124 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
7125 EXTRALIBS=$extralibs
7126 COMPAT_OBJS=$compat_objs
7127 INSTALL=$install
7128 LIBTARGET=${LIBTARGET}
7129 SLIBNAME=${SLIBNAME}
7130 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
7131 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
7132 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
7133 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
7134 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
7135 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
7136 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
7137 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
7138 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
7139 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
7140 NOREDZONE_FLAGS=$noredzone_flags
7141 LIBFUZZER_PATH=$libfuzzer_path
7142 IGNORE_TESTS=$ignore_tests
7143 EOF
7144
7145 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> ffbuild/config.mak' $LIBRARY_LIST
7146
7147 for entry in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
7148     eval echo "EXTRALIBS-${entry}=\$${entry}_extralibs" >> ffbuild/config.mak
7149 done
7150
7151 cat > $TMPH <<EOF
7152 /* Automatically generated by configure - do not modify! */
7153 #ifndef FFMPEG_CONFIG_H
7154 #define FFMPEG_CONFIG_H
7155 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
7156 #define FFMPEG_LICENSE "$(c_escape $license)"
7157 #define CONFIG_THIS_YEAR 2018
7158 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
7159 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
7160 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
7161 #define av_restrict $restrict_keyword
7162 #define EXTERN_PREFIX "${extern_prefix}"
7163 #define EXTERN_ASM ${extern_prefix}
7164 #define BUILDSUF "$build_suffix"
7165 #define SLIBSUF "$SLIBSUF"
7166 #define HAVE_MMX2 HAVE_MMXEXT
7167 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
7168 EOF
7169
7170 test -n "$assert_level" &&
7171     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
7172
7173 test -n "$malloc_prefix" &&
7174     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
7175
7176 if enabled x86asm; then
7177     append config_files $TMPASM
7178     cat > $TMPASM <<EOF
7179 ; Automatically generated by configure - do not modify!
7180 EOF
7181 fi
7182
7183 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
7184
7185
7186 mkdir -p doc
7187 mkdir -p tests
7188 mkdir -p tests/api
7189 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
7190
7191 print_config ARCH_   "$config_files" $ARCH_LIST
7192 print_config HAVE_   "$config_files" $HAVE_LIST
7193 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
7194                                      $CONFIG_EXTRA      \
7195                                      $ALL_COMPONENTS    \
7196
7197 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
7198 echo "endif # FFMPEG_CONFIG_MAK" >> ffbuild/config.mak
7199
7200 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
7201 cp_if_changed $TMPH config.h
7202 touch ffbuild/.config
7203
7204 enabled x86asm && cp_if_changed $TMPASM config.asm
7205
7206 cat > $TMPH <<EOF
7207 /* Generated by ffmpeg configure */
7208 #ifndef AVUTIL_AVCONFIG_H
7209 #define AVUTIL_AVCONFIG_H
7210 EOF
7211
7212 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
7213
7214 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
7215
7216 cp_if_changed $TMPH libavutil/avconfig.h
7217
7218 full_filter_name(){
7219     sed -n "s/^extern AVFilter ff_\([avfsinkrc]\{2,5\}\)_$1;/\1_$1/p" $source_path/libavfilter/allfilters.c
7220 }
7221
7222 # generate the lists of enabled components
7223 print_enabled_components(){
7224     file=$1
7225     struct_name=$2
7226     name=$3
7227     shift 3
7228     echo "static const $struct_name * const $name[] = {" > $TMPH
7229     for c in $*; do
7230         if enabled $c; then
7231             case $name in
7232                 filter_list)
7233                     c=$(full_filter_name $(remove_suffix _filter $c))
7234                 ;;
7235                 indev_list)
7236                     c=$(add_suffix _demuxer $(remove_suffix _indev $c))
7237                 ;;
7238                 outdev_list)
7239                     c=$(add_suffix _muxer $(remove_suffix _outdev $c))
7240                 ;;
7241             esac
7242             printf "    &ff_%s,\n" $c >> $TMPH
7243         fi
7244     done
7245     if [ "$name" = "filter_list" ]; then
7246         for c in asrc_abuffer vsrc_buffer asink_abuffer vsink_buffer; do
7247             printf "    &ff_%s,\n" $c >> $TMPH
7248         done
7249     fi
7250     echo "    NULL };" >> $TMPH
7251     cp_if_changed $TMPH $file
7252 }
7253
7254 print_enabled_components libavfilter/filter_list.c AVFilter filter_list $FILTER_LIST
7255 print_enabled_components libavcodec/codec_list.c AVCodec codec_list $CODEC_LIST
7256 print_enabled_components libavcodec/parser_list.c AVCodecParser parser_list $PARSER_LIST
7257 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
7258 print_enabled_components libavformat/demuxer_list.c AVInputFormat demuxer_list $DEMUXER_LIST
7259 print_enabled_components libavformat/muxer_list.c AVOutputFormat muxer_list $MUXER_LIST
7260 print_enabled_components libavdevice/indev_list.c AVInputFormat indev_list $INDEV_LIST
7261 print_enabled_components libavdevice/outdev_list.c AVOutputFormat outdev_list $OUTDEV_LIST
7262 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
7263
7264 # Settings for pkg-config files
7265
7266 cat > $TMPH <<EOF
7267 # Automatically generated by configure - do not modify!
7268 shared=$shared
7269 build_suffix=$build_suffix
7270 prefix=$prefix
7271 libdir=$libdir
7272 incdir=$incdir
7273 rpath=$(enabled rpath && echo "-Wl,-rpath,\${libdir}")
7274 source_path=${source_path}
7275 LIBPREF=${LIBPREF}
7276 LIBSUF=${LIBSUF}
7277 extralibs_avutil="$avutil_extralibs"
7278 extralibs_avcodec="$avcodec_extralibs"
7279 extralibs_avformat="$avformat_extralibs"
7280 extralibs_avdevice="$avdevice_extralibs"
7281 extralibs_avfilter="$avfilter_extralibs"
7282 extralibs_avresample="$avresample_extralibs"
7283 extralibs_postproc="$postproc_extralibs"
7284 extralibs_swscale="$swscale_extralibs"
7285 extralibs_swresample="$swresample_extralibs"
7286 EOF
7287
7288 for lib in $LIBRARY_LIST; do
7289     lib_deps="$(eval echo \$${lib}_deps)"
7290     echo ${lib}_deps=\"$lib_deps\" >> $TMPH
7291 done
7292
7293 cp_if_changed $TMPH ffbuild/config.sh