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_decoder_select="dump_extradata_bsf"
3053 libaom_av1_encoder_deps="libaom"
3054 libaom_av1_encoder_select="extract_extradata_bsf"
3055 libcelt_decoder_deps="libcelt"
3056 libcodec2_decoder_deps="libcodec2"
3057 libcodec2_encoder_deps="libcodec2"
3058 libdavs2_decoder_deps="libdavs2"
3059 libfdk_aac_decoder_deps="libfdk_aac"
3060 libfdk_aac_encoder_deps="libfdk_aac"
3061 libfdk_aac_encoder_select="audio_frame_queue"
3062 libgme_demuxer_deps="libgme"
3063 libgsm_decoder_deps="libgsm"
3064 libgsm_encoder_deps="libgsm"
3065 libgsm_ms_decoder_deps="libgsm"
3066 libgsm_ms_encoder_deps="libgsm"
3067 libilbc_decoder_deps="libilbc"
3068 libilbc_encoder_deps="libilbc"
3069 libkvazaar_encoder_deps="libkvazaar"
3070 libmodplug_demuxer_deps="libmodplug"
3071 libmp3lame_encoder_deps="libmp3lame"
3072 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
3073 libopencore_amrnb_decoder_deps="libopencore_amrnb"
3074 libopencore_amrnb_encoder_deps="libopencore_amrnb"
3075 libopencore_amrnb_encoder_select="audio_frame_queue"
3076 libopencore_amrwb_decoder_deps="libopencore_amrwb"
3077 libopenh264_decoder_deps="libopenh264"
3078 libopenh264_decoder_select="h264_mp4toannexb_bsf"
3079 libopenh264_encoder_deps="libopenh264"
3080 libopenjpeg_decoder_deps="libopenjpeg"
3081 libopenjpeg_encoder_deps="libopenjpeg"
3082 libopenmpt_demuxer_deps="libopenmpt"
3083 libopus_decoder_deps="libopus"
3084 libopus_encoder_deps="libopus"
3085 libopus_encoder_select="audio_frame_queue"
3086 librsvg_decoder_deps="librsvg"
3087 libshine_encoder_deps="libshine"
3088 libshine_encoder_select="audio_frame_queue"
3089 libspeex_decoder_deps="libspeex"
3090 libspeex_encoder_deps="libspeex"
3091 libspeex_encoder_select="audio_frame_queue"
3092 libtheora_encoder_deps="libtheora"
3093 libtwolame_encoder_deps="libtwolame"
3094 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
3095 libvorbis_decoder_deps="libvorbis"
3096 libvorbis_encoder_deps="libvorbis libvorbisenc"
3097 libvorbis_encoder_select="audio_frame_queue"
3098 libvpx_vp8_decoder_deps="libvpx"
3099 libvpx_vp8_encoder_deps="libvpx"
3100 libvpx_vp9_decoder_deps="libvpx"
3101 libvpx_vp9_encoder_deps="libvpx"
3102 libwavpack_encoder_deps="libwavpack"
3103 libwavpack_encoder_select="audio_frame_queue"
3104 libwebp_encoder_deps="libwebp"
3105 libwebp_anim_encoder_deps="libwebp"
3106 libx262_encoder_deps="libx262"
3107 libx264_encoder_deps="libx264"
3108 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
3109 libx264rgb_encoder_select="libx264_encoder"
3110 libx265_encoder_deps="libx265"
3111 libxavs_encoder_deps="libxavs"
3112 libxvid_encoder_deps="libxvid"
3113 libzvbi_teletext_decoder_deps="libzvbi"
3114 vapoursynth_demuxer_deps="vapoursynth"
3115 videotoolbox_suggest="coreservices"
3116 videotoolbox_deps="corefoundation coremedia corevideo"
3117 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
3118
3119 # demuxers / muxers
3120 ac3_demuxer_select="ac3_parser"
3121 aiff_muxer_select="iso_media"
3122 asf_demuxer_select="riffdec"
3123 asf_o_demuxer_select="riffdec"
3124 asf_muxer_select="riffenc"
3125 asf_stream_muxer_select="asf_muxer"
3126 avi_demuxer_select="iso_media riffdec exif"
3127 avi_muxer_select="riffenc"
3128 caf_demuxer_select="iso_media riffdec"
3129 caf_muxer_select="iso_media"
3130 dash_muxer_select="mp4_muxer"
3131 dash_demuxer_deps="libxml2"
3132 dirac_demuxer_select="dirac_parser"
3133 dts_demuxer_select="dca_parser"
3134 dtshd_demuxer_select="dca_parser"
3135 dv_demuxer_select="dvprofile"
3136 dv_muxer_select="dvprofile"
3137 dxa_demuxer_select="riffdec"
3138 eac3_demuxer_select="ac3_parser"
3139 f4v_muxer_select="mov_muxer"
3140 fifo_muxer_deps="threads"
3141 flac_demuxer_select="flac_parser"
3142 hds_muxer_select="flv_muxer"
3143 hls_muxer_select="mpegts_muxer"
3144 hls_muxer_suggest="gcrypt openssl"
3145 image2_alias_pix_demuxer_select="image2_demuxer"
3146 image2_brender_pix_demuxer_select="image2_demuxer"
3147 ipod_muxer_select="mov_muxer"
3148 ismv_muxer_select="mov_muxer"
3149 matroska_audio_muxer_select="matroska_muxer"
3150 matroska_demuxer_select="iso_media riffdec"
3151 matroska_demuxer_suggest="bzlib lzo zlib"
3152 matroska_muxer_select="iso_media riffenc"
3153 mmf_muxer_select="riffenc"
3154 mov_demuxer_select="iso_media riffdec"
3155 mov_demuxer_suggest="zlib"
3156 mov_muxer_select="iso_media riffenc rtpenc_chain"
3157 mp3_demuxer_select="mpegaudio_parser"
3158 mp3_muxer_select="mpegaudioheader"
3159 mp4_muxer_select="mov_muxer"
3160 mpegts_demuxer_select="iso_media"
3161 mpegts_muxer_select="adts_muxer latm_muxer"
3162 mpegtsraw_demuxer_select="mpegts_demuxer"
3163 mxf_d10_muxer_select="mxf_muxer"
3164 mxf_opatom_muxer_select="mxf_muxer"
3165 nut_muxer_select="riffenc"
3166 nuv_demuxer_select="riffdec"
3167 oga_muxer_select="ogg_muxer"
3168 ogg_demuxer_select="dirac_parse"
3169 ogv_muxer_select="ogg_muxer"
3170 opus_muxer_select="ogg_muxer"
3171 psp_muxer_select="mov_muxer"
3172 rtp_demuxer_select="sdp_demuxer"
3173 rtp_muxer_select="golomb"
3174 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3175 rtsp_demuxer_select="http_protocol rtpdec"
3176 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3177 sap_demuxer_select="sdp_demuxer"
3178 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3179 sdp_demuxer_select="rtpdec"
3180 smoothstreaming_muxer_select="ismv_muxer"
3181 spdif_demuxer_select="adts_header"
3182 spdif_muxer_select="adts_header"
3183 spx_muxer_select="ogg_muxer"
3184 swf_demuxer_suggest="zlib"
3185 tak_demuxer_select="tak_parser"
3186 tg2_muxer_select="mov_muxer"
3187 tgp_muxer_select="mov_muxer"
3188 vobsub_demuxer_select="mpegps_demuxer"
3189 w64_demuxer_select="wav_demuxer"
3190 w64_muxer_select="wav_muxer"
3191 wav_demuxer_select="riffdec"
3192 wav_muxer_select="riffenc"
3193 webm_muxer_select="iso_media riffenc"
3194 webm_dash_manifest_demuxer_select="matroska_demuxer"
3195 wtv_demuxer_select="mpegts_demuxer riffdec"
3196 wtv_muxer_select="mpegts_muxer riffenc"
3197 xmv_demuxer_select="riffdec"
3198 xwma_demuxer_select="riffdec"
3199
3200 # indevs / outdevs
3201 android_camera_indev_deps="android camera2ndk mediandk pthreads"
3202 android_camera_indev_extralibs="-landroid -lcamera2ndk -lmediandk"
3203 alsa_indev_deps="alsa"
3204 alsa_outdev_deps="alsa"
3205 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3206 avfoundation_indev_suggest="coregraphics applicationservices"
3207 avfoundation_indev_extralibs="-framework Foundation"
3208 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3209 caca_outdev_deps="libcaca"
3210 decklink_deps_any="libdl LoadLibrary"
3211 decklink_indev_deps="decklink threads"
3212 decklink_indev_extralibs="-lstdc++"
3213 decklink_outdev_deps="decklink threads"
3214 decklink_outdev_extralibs="-lstdc++"
3215 libndi_newtek_indev_deps="libndi_newtek"
3216 libndi_newtek_indev_extralibs="-lndi"
3217 libndi_newtek_outdev_deps="libndi_newtek"
3218 libndi_newtek_outdev_extralibs="-lndi"
3219 dshow_indev_deps="IBaseFilter"
3220 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3221 fbdev_indev_deps="linux_fb_h"
3222 fbdev_outdev_deps="linux_fb_h"
3223 gdigrab_indev_deps="CreateDIBSection"
3224 gdigrab_indev_extralibs="-lgdi32"
3225 gdigrab_indev_select="bmp_decoder"
3226 iec61883_indev_deps="libiec61883"
3227 jack_indev_deps="libjack"
3228 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3229 kmsgrab_indev_deps="libdrm"
3230 lavfi_indev_deps="avfilter"
3231 libcdio_indev_deps="libcdio"
3232 libdc1394_indev_deps="libdc1394"
3233 openal_indev_deps="openal"
3234 opengl_outdev_deps="opengl"
3235 oss_indev_deps_any="sys_soundcard_h"
3236 oss_outdev_deps_any="sys_soundcard_h"
3237 pulse_indev_deps="libpulse"
3238 pulse_outdev_deps="libpulse"
3239 sdl2_outdev_deps="sdl2"
3240 sndio_indev_deps="sndio"
3241 sndio_outdev_deps="sndio"
3242 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3243 v4l2_indev_suggest="libv4l2"
3244 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3245 v4l2_outdev_suggest="libv4l2"
3246 vfwcap_indev_deps="vfw32 vfwcap_defines"
3247 xcbgrab_indev_deps="libxcb"
3248 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3249 xv_outdev_deps="xlib"
3250
3251 # protocols
3252 async_protocol_deps="threads"
3253 bluray_protocol_deps="libbluray"
3254 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3255 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl mbedtls"
3256 ffrtmpcrypt_protocol_select="tcp_protocol"
3257 ffrtmphttp_protocol_conflict="librtmp_protocol"
3258 ffrtmphttp_protocol_select="http_protocol"
3259 ftp_protocol_select="tcp_protocol"
3260 gopher_protocol_select="network"
3261 http_protocol_select="tcp_protocol"
3262 http_protocol_suggest="zlib"
3263 httpproxy_protocol_select="tcp_protocol"
3264 httpproxy_protocol_suggest="zlib"
3265 https_protocol_select="tls_protocol"
3266 https_protocol_suggest="zlib"
3267 icecast_protocol_select="http_protocol"
3268 librtmp_protocol_deps="librtmp"
3269 librtmpe_protocol_deps="librtmp"
3270 librtmps_protocol_deps="librtmp"
3271 librtmpt_protocol_deps="librtmp"
3272 librtmpte_protocol_deps="librtmp"
3273 libsmbclient_protocol_deps="libsmbclient gplv3"
3274 libssh_protocol_deps="libssh"
3275 libtls_conflict="openssl gnutls mbedtls"
3276 mmsh_protocol_select="http_protocol"
3277 mmst_protocol_select="network"
3278 libsrt_protocol_deps="libsrt"
3279 libsrt_protocol_select="network"
3280 rtmp_protocol_conflict="librtmp_protocol"
3281 rtmp_protocol_select="tcp_protocol"
3282 rtmp_protocol_suggest="zlib"
3283 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3284 rtmpe_protocol_suggest="zlib"
3285 rtmps_protocol_conflict="librtmp_protocol"
3286 rtmps_protocol_select="tls_protocol"
3287 rtmps_protocol_suggest="zlib"
3288 rtmpt_protocol_select="ffrtmphttp_protocol"
3289 rtmpt_protocol_suggest="zlib"
3290 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3291 rtmpte_protocol_suggest="zlib"
3292 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3293 rtmpts_protocol_suggest="zlib"
3294 rtp_protocol_select="udp_protocol"
3295 schannel_conflict="openssl gnutls libtls mbedtls"
3296 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3297 sctp_protocol_select="network"
3298 securetransport_conflict="openssl gnutls libtls mbedtls"
3299 srtp_protocol_select="rtp_protocol srtp"
3300 tcp_protocol_select="network"
3301 tls_protocol_deps_any="gnutls openssl schannel securetransport libtls mbedtls"
3302 tls_protocol_select="tcp_protocol"
3303 udp_protocol_select="network"
3304 udplite_protocol_select="network"
3305 unix_protocol_deps="sys_un_h"
3306 unix_protocol_select="network"
3307
3308 # filters
3309 afftfilt_filter_deps="avcodec"
3310 afftfilt_filter_select="fft"
3311 afir_filter_deps="avcodec"
3312 afir_filter_select="fft"
3313 amovie_filter_deps="avcodec avformat"
3314 aresample_filter_deps="swresample"
3315 ass_filter_deps="libass"
3316 atempo_filter_deps="avcodec"
3317 atempo_filter_select="rdft"
3318 avgblur_opencl_filter_deps="opencl"
3319 azmq_filter_deps="libzmq"
3320 blackframe_filter_deps="gpl"
3321 boxblur_filter_deps="gpl"
3322 boxblur_opencl_filter_deps="opencl gpl"
3323 bs2b_filter_deps="libbs2b"
3324 colormatrix_filter_deps="gpl"
3325 convolution_opencl_filter_deps="opencl"
3326 convolve_filter_deps="avcodec"
3327 convolve_filter_select="fft"
3328 coreimage_filter_deps="coreimage appkit"
3329 coreimage_filter_extralibs="-framework OpenGL"
3330 coreimagesrc_filter_deps="coreimage appkit"
3331 coreimagesrc_filter_extralibs="-framework OpenGL"
3332 cover_rect_filter_deps="avcodec avformat gpl"
3333 cropdetect_filter_deps="gpl"
3334 deconvolve_filter_deps="avcodec"
3335 deconvolve_filter_select="fft"
3336 deinterlace_qsv_filter_deps="libmfx"
3337 deinterlace_vaapi_filter_deps="vaapi"
3338 delogo_filter_deps="gpl"
3339 denoise_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3340 deshake_filter_select="pixelutils"
3341 dilation_opencl_filter_deps="opencl"
3342 drawtext_filter_deps="libfreetype"
3343 drawtext_filter_suggest="libfontconfig libfribidi"
3344 elbg_filter_deps="avcodec"
3345 eq_filter_deps="gpl"
3346 erosion_opencl_filter_deps="opencl"
3347 fftfilt_filter_deps="avcodec"
3348 fftfilt_filter_select="rdft"
3349 fftdnoiz_filter_deps="avcodec"
3350 fftdnoiz_filter_select="fft"
3351 find_rect_filter_deps="avcodec avformat gpl"
3352 firequalizer_filter_deps="avcodec"
3353 firequalizer_filter_select="rdft"
3354 flite_filter_deps="libflite"
3355 framerate_filter_select="pixelutils"
3356 frei0r_filter_deps="frei0r libdl"
3357 frei0r_src_filter_deps="frei0r libdl"
3358 fspp_filter_deps="gpl"
3359 geq_filter_deps="gpl"
3360 histeq_filter_deps="gpl"
3361 hqdn3d_filter_deps="gpl"
3362 interlace_filter_deps="gpl"
3363 kerndeint_filter_deps="gpl"
3364 ladspa_filter_deps="ladspa libdl"
3365 lensfun_filter_deps="liblensfun version3"
3366 lv2_filter_deps="lv2"
3367 mcdeint_filter_deps="avcodec gpl"
3368 movie_filter_deps="avcodec avformat"
3369 mpdecimate_filter_deps="gpl"
3370 mpdecimate_filter_select="pixelutils"
3371 mptestsrc_filter_deps="gpl"
3372 negate_filter_deps="lut_filter"
3373 nnedi_filter_deps="gpl"
3374 ocr_filter_deps="libtesseract"
3375 ocv_filter_deps="libopencv"
3376 openclsrc_filter_deps="opencl"
3377 overlay_opencl_filter_deps="opencl"
3378 overlay_qsv_filter_deps="libmfx"
3379 overlay_qsv_filter_select="qsvvpp"
3380 owdenoise_filter_deps="gpl"
3381 pan_filter_deps="swresample"
3382 perspective_filter_deps="gpl"
3383 phase_filter_deps="gpl"
3384 pp7_filter_deps="gpl"
3385 pp_filter_deps="gpl postproc"
3386 prewitt_opencl_filter_deps="opencl"
3387 procamp_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3388 program_opencl_filter_deps="opencl"
3389 pullup_filter_deps="gpl"
3390 removelogo_filter_deps="avcodec avformat swscale"
3391 repeatfields_filter_deps="gpl"
3392 resample_filter_deps="avresample"
3393 roberts_opencl_filter_deps="opencl"
3394 rubberband_filter_deps="librubberband"
3395 sab_filter_deps="gpl swscale"
3396 scale2ref_filter_deps="swscale"
3397 scale_filter_deps="swscale"
3398 scale_qsv_filter_deps="libmfx"
3399 select_filter_select="pixelutils"
3400 sharpness_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3401 showcqt_filter_deps="avcodec avformat swscale"
3402 showcqt_filter_suggest="libfontconfig libfreetype"
3403 showcqt_filter_select="fft"
3404 showfreqs_filter_deps="avcodec"
3405 showfreqs_filter_select="fft"
3406 showspectrum_filter_deps="avcodec"
3407 showspectrum_filter_select="fft"
3408 showspectrumpic_filter_deps="avcodec"
3409 showspectrumpic_filter_select="fft"
3410 signature_filter_deps="gpl avcodec avformat"
3411 smartblur_filter_deps="gpl swscale"
3412 sobel_opencl_filter_deps="opencl"
3413 sofalizer_filter_deps="libmysofa avcodec"
3414 sofalizer_filter_select="fft"
3415 spectrumsynth_filter_deps="avcodec"
3416 spectrumsynth_filter_select="fft"
3417 spp_filter_deps="gpl avcodec"
3418 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3419 sr_filter_deps="avformat swscale"
3420 sr_filter_select="dnn"
3421 stereo3d_filter_deps="gpl"
3422 subtitles_filter_deps="avformat avcodec libass"
3423 super2xsai_filter_deps="gpl"
3424 pixfmts_super2xsai_test_deps="super2xsai_filter"
3425 tinterlace_filter_deps="gpl"
3426 tinterlace_merge_test_deps="tinterlace_filter"
3427 tinterlace_pad_test_deps="tinterlace_filter"
3428 tonemap_filter_deps="const_nan"
3429 tonemap_opencl_filter_deps="opencl const_nan"
3430 unsharp_opencl_filter_deps="opencl"
3431 uspp_filter_deps="gpl avcodec"
3432 vaguedenoiser_filter_deps="gpl"
3433 vidstabdetect_filter_deps="libvidstab"
3434 vidstabtransform_filter_deps="libvidstab"
3435 libvmaf_filter_deps="libvmaf pthreads"
3436 zmq_filter_deps="libzmq"
3437 zoompan_filter_deps="swscale"
3438 zscale_filter_deps="libzimg const_nan"
3439 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3440 vpp_qsv_filter_deps="libmfx"
3441 vpp_qsv_filter_select="qsvvpp"
3442
3443 # examples
3444 avio_dir_cmd_deps="avformat avutil"
3445 avio_reading_deps="avformat avcodec avutil"
3446 decode_audio_example_deps="avcodec avutil"
3447 decode_video_example_deps="avcodec avutil"
3448 demuxing_decoding_example_deps="avcodec avformat avutil"
3449 encode_audio_example_deps="avcodec avutil"
3450 encode_video_example_deps="avcodec avutil"
3451 extract_mvs_example_deps="avcodec avformat avutil"
3452 filter_audio_example_deps="avfilter avutil"
3453 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3454 filtering_video_example_deps="avfilter avcodec avformat avutil"
3455 http_multiclient_example_deps="avformat avutil fork"
3456 hw_decode_example_deps="avcodec avformat avutil"
3457 metadata_example_deps="avformat avutil"
3458 muxing_example_deps="avcodec avformat avutil swscale"
3459 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3460 remuxing_example_deps="avcodec avformat avutil"
3461 resampling_audio_example_deps="avutil swresample"
3462 scaling_video_example_deps="avutil swscale"
3463 transcode_aac_example_deps="avcodec avformat swresample"
3464 transcoding_example_deps="avfilter avcodec avformat avutil"
3465 vaapi_encode_example_deps="avcodec avutil h264_vaapi_encoder"
3466 vaapi_transcode_example_deps="avcodec avformat avutil h264_vaapi_encoder"
3467
3468 # EXTRALIBS_LIST
3469 cpu_init_extralibs="pthreads_extralibs"
3470 cws2fws_extralibs="zlib_extralibs"
3471
3472 # libraries, in linking order
3473 avcodec_deps="avutil"
3474 avcodec_suggest="libm"
3475 avcodec_select="null_bsf"
3476 avdevice_deps="avformat avcodec avutil"
3477 avdevice_suggest="libm"
3478 avfilter_deps="avutil"
3479 avfilter_suggest="libm"
3480 avformat_deps="avcodec avutil"
3481 avformat_suggest="libm network zlib"
3482 avresample_deps="avutil"
3483 avresample_suggest="libm"
3484 avutil_suggest="clock_gettime ffnvcodec libm libdrm libmfx opencl user32 vaapi videotoolbox corefoundation corevideo coremedia bcrypt"
3485 postproc_deps="avutil gpl"
3486 postproc_suggest="libm"
3487 swresample_deps="avutil"
3488 swresample_suggest="libm libsoxr"
3489 swscale_deps="avutil"
3490 swscale_suggest="libm"
3491
3492 avcodec_extralibs="pthreads_extralibs iconv_extralibs"
3493 avfilter_extralibs="pthreads_extralibs"
3494 avutil_extralibs="d3d11va_extralibs nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3495
3496 # programs
3497 ffmpeg_deps="avcodec avfilter avformat"
3498 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3499                null_filter
3500                trim_filter"
3501 ffmpeg_suggest="ole32 psapi shell32"
3502 ffplay_deps="avcodec avformat swscale swresample sdl2"
3503 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3504 ffplay_suggest="shell32"
3505 ffprobe_deps="avcodec avformat"
3506 ffprobe_suggest="shell32"
3507
3508 # documentation
3509 podpages_deps="perl"
3510 manpages_deps="perl pod2man"
3511 htmlpages_deps="perl"
3512 htmlpages_deps_any="makeinfo_html texi2html"
3513 txtpages_deps="perl makeinfo"
3514 doc_deps_any="manpages htmlpages podpages txtpages"
3515
3516 # default parameters
3517
3518 logfile="ffbuild/config.log"
3519
3520 # installation paths
3521 prefix_default="/usr/local"
3522 bindir_default='${prefix}/bin'
3523 datadir_default='${prefix}/share/ffmpeg'
3524 docdir_default='${prefix}/share/doc/ffmpeg'
3525 incdir_default='${prefix}/include'
3526 libdir_default='${prefix}/lib'
3527 mandir_default='${prefix}/share/man'
3528
3529 # toolchain
3530 ar_default="ar"
3531 cc_default="gcc"
3532 cxx_default="g++"
3533 host_cc_default="gcc"
3534 doxygen_default="doxygen"
3535 install="install"
3536 ln_s_default="ln -s -f"
3537 nm_default="nm -g"
3538 pkg_config_default=pkg-config
3539 ranlib_default="ranlib"
3540 strip_default="strip"
3541 version_script='--version-script'
3542 objformat="elf32"
3543 x86asmexe_default="nasm"
3544 windres_default="windres"
3545 nvcc_default="nvcc"
3546 nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
3547 striptype="direct"
3548
3549 # OS
3550 target_os_default=$(tolower $(uname -s))
3551 host_os=$target_os_default
3552
3553 # machine
3554 if test "$target_os_default" = aix; then
3555     arch_default=$(uname -p)
3556     strip_default="strip -X32_64"
3557 else
3558     arch_default=$(uname -m)
3559 fi
3560 cpu="generic"
3561 intrinsics="none"
3562
3563 # configurable options
3564 enable $PROGRAM_LIST
3565 enable $DOCUMENT_LIST
3566 enable $EXAMPLE_LIST
3567 enable $(filter_out avresample $LIBRARY_LIST)
3568 enable stripping
3569
3570 enable asm
3571 enable debug
3572 enable doc
3573 enable faan faandct faanidct
3574 enable optimizations
3575 enable runtime_cpudetect
3576 enable safe_bitstream_reader
3577 enable static
3578 enable swscale_alpha
3579 enable valgrind_backtrace
3580
3581 sws_max_filter_size_default=256
3582 set_default sws_max_filter_size
3583
3584 # internal components are enabled by default
3585 enable $EXTRALIBS_LIST
3586
3587 # Avoid external, non-system, libraries getting enabled by dependency resolution
3588 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3589
3590 # build settings
3591 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3592 LIBPREF="lib"
3593 LIBSUF=".a"
3594 FULLNAME='$(NAME)$(BUILDSUF)'
3595 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3596 SLIBPREF="lib"
3597 SLIBSUF=".so"
3598 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3599 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3600 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3601 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3602 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3603 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3604 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3605
3606 asflags_filter=echo
3607 cflags_filter=echo
3608 ldflags_filter=echo
3609
3610 AS_C='-c'
3611 AS_O='-o $@'
3612 CC_C='-c'
3613 CC_E='-E -o $@'
3614 CC_O='-o $@'
3615 CXX_C='-c'
3616 CXX_O='-o $@'
3617 OBJCC_C='-c'
3618 OBJCC_E='-E -o $@'
3619 OBJCC_O='-o $@'
3620 X86ASM_O='-o $@'
3621 LD_O='-o $@'
3622 LD_LIB='-l%'
3623 LD_PATH='-L'
3624 HOSTCC_C='-c'
3625 HOSTCC_E='-E -o $@'
3626 HOSTCC_O='-o $@'
3627 HOSTLD_O='-o $@'
3628 NVCC_C='-c'
3629 NVCC_O='-o $@'
3630
3631 host_extralibs='-lm'
3632 host_cflags_filter=echo
3633 host_ldflags_filter=echo
3634
3635 target_path='$(CURDIR)'
3636
3637 # since the object filename is not given with the -MM flag, the compiler
3638 # is only able to print the basename, and we must add the path ourselves
3639 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3640 DEPFLAGS='-MM'
3641
3642 mkdir -p ffbuild
3643
3644 # find source path
3645 if test -f configure; then
3646     source_path=.
3647 else
3648     source_path=$(cd $(dirname "$0"); pwd)
3649     case "$source_path" in
3650         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3651     esac
3652     test -e "$source_path/config.h" &&
3653         die "Out of tree builds are impossible with config.h in source dir."
3654 fi
3655
3656 for v in "$@"; do
3657     r=${v#*=}
3658     l=${v%"$r"}
3659     r=$(sh_quote "$r")
3660     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3661 done
3662
3663 find_things_extern(){
3664     thing=$1
3665     pattern=$2
3666     file=$source_path/$3
3667     out=${4:-$thing}
3668     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$out/p" "$file"
3669 }
3670
3671 find_filters_extern(){
3672     file=$source_path/$1
3673     #sed -n "s/^extern AVFilter ff_\([avfsinkrc]\{2,5\}\)_\(\w\+\);/\2_filter/p" $file
3674     sed -E -n "s/^extern AVFilter ff_([avfsinkrc]{2,5})_([a-zA-Z0-9_]+);/\2_filter/p" $file
3675 }
3676
3677 FILTER_LIST=$(find_filters_extern libavfilter/allfilters.c)
3678 OUTDEV_LIST=$(find_things_extern muxer AVOutputFormat libavdevice/alldevices.c outdev)
3679 INDEV_LIST=$(find_things_extern demuxer AVInputFormat libavdevice/alldevices.c indev)
3680 MUXER_LIST=$(find_things_extern muxer AVOutputFormat libavformat/allformats.c)
3681 DEMUXER_LIST=$(find_things_extern demuxer AVInputFormat libavformat/allformats.c)
3682 ENCODER_LIST=$(find_things_extern encoder AVCodec libavcodec/allcodecs.c)
3683 DECODER_LIST=$(find_things_extern decoder AVCodec libavcodec/allcodecs.c)
3684 CODEC_LIST="
3685     $ENCODER_LIST
3686     $DECODER_LIST
3687 "
3688 PARSER_LIST=$(find_things_extern parser AVCodecParser libavcodec/parsers.c)
3689 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3690 HWACCEL_LIST=$(find_things_extern hwaccel AVHWAccel libavcodec/hwaccels.h)
3691 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3692
3693 AVCODEC_COMPONENTS_LIST="
3694     $BSF_LIST
3695     $DECODER_LIST
3696     $ENCODER_LIST
3697     $HWACCEL_LIST
3698     $PARSER_LIST
3699 "
3700
3701 AVDEVICE_COMPONENTS_LIST="
3702     $INDEV_LIST
3703     $OUTDEV_LIST
3704 "
3705
3706 AVFILTER_COMPONENTS_LIST="
3707     $FILTER_LIST
3708 "
3709
3710 AVFORMAT_COMPONENTS_LIST="
3711     $DEMUXER_LIST
3712     $MUXER_LIST
3713     $PROTOCOL_LIST
3714 "
3715
3716 ALL_COMPONENTS="
3717     $AVCODEC_COMPONENTS_LIST
3718     $AVDEVICE_COMPONENTS_LIST
3719     $AVFILTER_COMPONENTS_LIST
3720     $AVFORMAT_COMPONENTS_LIST
3721 "
3722
3723 for n in $COMPONENT_LIST; do
3724     v=$(toupper ${n%s})_LIST
3725     eval enable \$$v
3726     eval ${n}_if_any="\$$v"
3727 done
3728
3729 enable $ARCH_EXT_LIST
3730
3731 die_unknown(){
3732     echo "Unknown option \"$1\"."
3733     echo "See $0 --help for available options."
3734     exit 1
3735 }
3736
3737 print_in_columns() {
3738     cols=$(expr $ncols / 24)
3739     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3740 }
3741
3742 show_list() {
3743     suffix=_$1
3744     shift
3745     echo $* | sed s/$suffix//g | print_in_columns
3746     exit 0
3747 }
3748
3749 rand_list(){
3750     IFS=', '
3751     set -- $*
3752     unset IFS
3753     for thing; do
3754         comp=${thing%:*}
3755         prob=${thing#$comp}
3756         prob=${prob#:}
3757         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3758         echo "prob ${prob:-0.5}"
3759         printf '%s\n' $comp
3760     done
3761 }
3762
3763 do_random(){
3764     action=$1
3765     shift
3766     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3767     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3768 }
3769
3770 for opt do
3771     optval="${opt#*=}"
3772     case "$opt" in
3773         --extra-ldflags=*)
3774             add_ldflags $optval
3775         ;;
3776         --extra-ldexeflags=*)
3777             add_ldexeflags $optval
3778         ;;
3779         --extra-ldsoflags=*)
3780             add_ldsoflags $optval
3781         ;;
3782         --extra-ldlibflags=*)
3783             warn "The --extra-ldlibflags option is only provided for compatibility and will be\n"\
3784                  "removed in the future. Use --extra-ldsoflags instead."
3785             add_ldsoflags $optval
3786         ;;
3787         --extra-libs=*)
3788             add_extralibs $optval
3789         ;;
3790         --disable-devices)
3791             disable $INDEV_LIST $OUTDEV_LIST
3792         ;;
3793         --enable-debug=*)
3794             debuglevel="$optval"
3795         ;;
3796         --disable-programs)
3797             disable $PROGRAM_LIST
3798         ;;
3799         --disable-everything)
3800             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3801         ;;
3802         --disable-all)
3803             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3804             disable $LIBRARY_LIST $PROGRAM_LIST doc
3805             enable avutil
3806         ;;
3807         --enable-random|--disable-random)
3808             action=${opt%%-random}
3809             do_random ${action#--} $COMPONENT_LIST
3810         ;;
3811         --enable-random=*|--disable-random=*)
3812             action=${opt%%-random=*}
3813             do_random ${action#--} $optval
3814         ;;
3815         --enable-sdl)
3816             enable sdl2
3817         ;;
3818         --enable-*=*|--disable-*=*)
3819             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3820             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3821             eval list=\$$(toupper $thing)_LIST
3822             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3823             list=$(filter "$name" $list)
3824             [ "$list" = "" ] && warn "Option $opt did not match anything"
3825             $action $list
3826         ;;
3827         --enable-yasm|--disable-yasm)
3828             warn "The ${opt} option is only provided for compatibility and will be\n"\
3829                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3830             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3831         ;;
3832         --yasmexe=*)
3833             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3834                  "removed in the future. Use --x86asmexe instead."
3835             x86asmexe="$optval"
3836         ;;
3837         --enable-?*|--disable-?*)
3838             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3839             if is_in $option $COMPONENT_LIST; then
3840                 test $action = disable && action=unset
3841                 eval $action \$$(toupper ${option%s})_LIST
3842             elif is_in $option $CMDLINE_SELECT; then
3843                 $action $option
3844             else
3845                 die_unknown $opt
3846             fi
3847         ;;
3848         --list-*)
3849             NAME="${opt#--list-}"
3850             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3851             NAME=${NAME%s}
3852             eval show_list $NAME \$$(toupper $NAME)_LIST
3853         ;;
3854         --help|-h) show_help
3855         ;;
3856         --quiet|-q) quiet=yes
3857         ;;
3858         --fatal-warnings) enable fatal_warnings
3859         ;;
3860         --libfuzzer=*)
3861             libfuzzer_path="$optval"
3862         ;;
3863         *)
3864             optname="${opt%%=*}"
3865             optname="${optname#--}"
3866             optname=$(echo "$optname" | sed 's/-/_/g')
3867             if is_in $optname $CMDLINE_SET; then
3868                 eval $optname='$optval'
3869             elif is_in $optname $CMDLINE_APPEND; then
3870                 append $optname "$optval"
3871             else
3872                 die_unknown $opt
3873             fi
3874         ;;
3875     esac
3876 done
3877
3878 for e in $env; do
3879     eval "export $e"
3880 done
3881
3882 if disabled autodetect; then
3883
3884     # Unless iconv is explicitely disabled by the user, we still want to probe
3885     # for the iconv from the libc.
3886     disabled iconv || enable libc_iconv
3887
3888     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3889     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3890 fi
3891 # Mark specifically enabled, but normally autodetected libraries as requested.
3892 for lib in $AUTODETECT_LIBS; do
3893     enabled $lib && request $lib
3894 done
3895 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
3896 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3897 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3898
3899 disabled logging && logfile=/dev/null
3900
3901 # command line configuration sanity checks
3902
3903 # we need to build at least one lib type
3904 if ! enabled_any static shared; then
3905     cat <<EOF
3906 At least one library type must be built.
3907 Specify --enable-static to build the static libraries or --enable-shared to
3908 build the shared libraries as well. To only build the shared libraries specify
3909 --disable-static in addition to --enable-shared.
3910 EOF
3911     exit 1
3912 fi
3913
3914 die_license_disabled() {
3915     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3916 }
3917
3918 die_license_disabled_gpl() {
3919     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3920 }
3921
3922 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3923 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3924
3925 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3926 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3927
3928 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3929
3930 if enabled nonfree; then
3931     license="nonfree and unredistributable"
3932 elif enabled gplv3; then
3933     license="GPL version 3 or later"
3934 elif enabled lgplv3; then
3935     license="LGPL version 3 or later"
3936 elif enabled gpl; then
3937     license="GPL version 2 or later"
3938 else
3939     license="LGPL version 2.1 or later"
3940 fi
3941
3942 enabled_all gnutls openssl &&
3943     die "GnuTLS and OpenSSL must not be enabled at the same time."
3944
3945 enabled_all gnutls mbedtls &&
3946     die "GnuTLS and mbedTLS must not be enabled at the same time."
3947
3948 enabled_all openssl mbedtls &&
3949     die "OpenSSL and mbedTLS must not be enabled at the same time."
3950
3951 # Disable all the library-specific components if the library itself
3952 # is disabled, see AVCODEC_LIST and following _LIST variables.
3953
3954 disable_components(){
3955     disabled ${1} && disable $(
3956         eval components="\$$(toupper ${1})_COMPONENTS"
3957         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3958     )
3959 }
3960
3961 map 'disable_components $v' $LIBRARY_LIST
3962
3963 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3964 set >> $logfile
3965
3966 test -n "$valgrind" && toolchain="valgrind-memcheck"
3967
3968 enabled ossfuzz && ! echo $CFLAGS | grep -q -- "-fsanitize="  &&{
3969     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
3970     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
3971 }
3972
3973 case "$toolchain" in
3974     *-asan)
3975         cc_default="${toolchain%-asan}"
3976         add_cflags  -fsanitize=address
3977         add_ldflags -fsanitize=address
3978     ;;
3979     *-msan)
3980         cc_default="${toolchain%-msan}"
3981         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3982         add_ldflags -fsanitize=memory
3983     ;;
3984     *-tsan)
3985         cc_default="${toolchain%-tsan}"
3986         add_cflags  -fsanitize=thread
3987         add_ldflags -fsanitize=thread
3988         case "$toolchain" in
3989             gcc-tsan)
3990                 add_cflags  -fPIC
3991                 add_ldflags -fPIC
3992                 ;;
3993         esac
3994     ;;
3995     *-usan)
3996         cc_default="${toolchain%-usan}"
3997         add_cflags  -fsanitize=undefined
3998         add_ldflags -fsanitize=undefined
3999     ;;
4000     valgrind-*)
4001         target_exec_default="valgrind"
4002         case "$toolchain" in
4003             valgrind-massif)
4004                 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"
4005                 ;;
4006             valgrind-memcheck)
4007                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
4008                 ;;
4009         esac
4010     ;;
4011     msvc)
4012         # Check whether the current MSVC version needs the C99 converter.
4013         # From MSVC 2013 (compiler major version 18) onwards, it does actually
4014         # support enough of C99 to build ffmpeg. Default to the new
4015         # behaviour if the regexp was unable to match anything, since this
4016         # successfully parses the version number of existing supported
4017         # versions that require the converter (MSVC 2010 and 2012).
4018         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
4019         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
4020             cc_default="cl"
4021             cxx_default="cl"
4022         else
4023             die "Unsupported MSVC version (2013 or newer required)"
4024         fi
4025         ld_default="$source_path/compat/windows/mslink"
4026         nm_default="dumpbin -symbols"
4027         ar_default="lib"
4028         case "$arch" in
4029         aarch64|arm64)
4030             as_default="armasm64"
4031             ;;
4032         arm*)
4033             as_default="armasm"
4034             ;;
4035         esac
4036         target_os_default="win32"
4037         # Use a relative path for TMPDIR. This makes sure all the
4038         # ffconf temp files are written with a relative path, avoiding
4039         # issues with msys/win32 path conversion for MSVC parameters
4040         # such as -Fo<file> or -out:<file>.
4041         TMPDIR=.
4042     ;;
4043     icl)
4044         cc_default="icl"
4045         ld_default="xilink"
4046         nm_default="dumpbin -symbols"
4047         ar_default="xilib"
4048         target_os_default="win32"
4049         TMPDIR=.
4050     ;;
4051     gcov)
4052         add_cflags  -fprofile-arcs -ftest-coverage
4053         add_ldflags -fprofile-arcs -ftest-coverage
4054     ;;
4055     llvm-cov)
4056         add_cflags -fprofile-arcs -ftest-coverage
4057         add_ldflags --coverage
4058     ;;
4059     hardened)
4060         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
4061         add_cflags   -fno-strict-overflow -fstack-protector-all
4062         add_ldflags  -Wl,-z,relro -Wl,-z,now
4063         add_cflags   -fPIE
4064         add_ldexeflags -fPIE -pie
4065     ;;
4066     ?*)
4067         die "Unknown toolchain $toolchain"
4068     ;;
4069 esac
4070
4071 if test -n "$cross_prefix"; then
4072     test -n "$arch" && test -n "$target_os" ||
4073         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
4074     enable cross_compile
4075 fi
4076
4077 ar_default="${cross_prefix}${ar_default}"
4078 cc_default="${cross_prefix}${cc_default}"
4079 cxx_default="${cross_prefix}${cxx_default}"
4080 nm_default="${cross_prefix}${nm_default}"
4081 pkg_config_default="${cross_prefix}${pkg_config_default}"
4082 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
4083     ranlib_default="${cross_prefix}${ranlib_default} -D"
4084 else
4085     ranlib_default="${cross_prefix}${ranlib_default}"
4086 fi
4087 strip_default="${cross_prefix}${strip_default}"
4088 windres_default="${cross_prefix}${windres_default}"
4089
4090 sysinclude_default="${sysroot}/usr/include"
4091
4092 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
4093     target_exec target_os x86asmexe nvcc
4094 enabled cross_compile || host_cc_default=$cc
4095 set_default host_cc
4096
4097 pkg_config_fail_message=""
4098 if ! $pkg_config --version >/dev/null 2>&1; then
4099     warn "$pkg_config not found, library detection may fail."
4100     pkg_config=false
4101 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
4102     pkg_config_fail_message="
4103 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
4104 fi
4105
4106 if test $doxygen != $doxygen_default && \
4107   ! $doxygen --version >/dev/null 2>&1; then
4108     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
4109 fi
4110
4111 exesuf() {
4112     case $1 in
4113         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
4114     esac
4115 }
4116
4117 EXESUF=$(exesuf $target_os)
4118 HOSTEXESUF=$(exesuf $host_os)
4119
4120 # set temporary file name
4121 : ${TMPDIR:=$TEMPDIR}
4122 : ${TMPDIR:=$TMP}
4123 : ${TMPDIR:=/tmp}
4124
4125 if [ -n "$tempprefix" ] ; then
4126     mktemp(){
4127         tmpname="$tempprefix.${HOSTNAME}.${UID}"
4128         echo "$tmpname"
4129         mkdir "$tmpname"
4130     }
4131 elif ! test_cmd mktemp -u XXXXXX; then
4132     # simple replacement for missing mktemp
4133     # NOT SAFE FOR GENERAL USE
4134     mktemp(){
4135         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
4136         echo "$tmpname"
4137         mkdir "$tmpname"
4138     }
4139 fi
4140
4141 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
4142     die "Unable to create temporary directory in $TMPDIR."
4143
4144 tmpfile(){
4145     tmp="${FFTMPDIR}/test"$2
4146     (set -C; exec > $tmp) 2> /dev/null ||
4147         die "Unable to create temporary file in $FFTMPDIR."
4148     eval $1=$tmp
4149 }
4150
4151 trap 'rm -rf -- "$FFTMPDIR"' EXIT
4152 trap 'exit 2' INT
4153
4154 tmpfile TMPASM .asm
4155 tmpfile TMPC   .c
4156 tmpfile TMPCPP .cpp
4157 tmpfile TMPE   $EXESUF
4158 tmpfile TMPH   .h
4159 tmpfile TMPM   .m
4160 tmpfile TMPO   .o
4161 tmpfile TMPS   .S
4162 tmpfile TMPSH  .sh
4163 tmpfile TMPV   .ver
4164
4165 unset -f mktemp
4166
4167 chmod +x $TMPE
4168
4169 # make sure we can execute files in $TMPDIR
4170 cat > $TMPSH 2>> $logfile <<EOF
4171 #! /bin/sh
4172 EOF
4173 chmod +x $TMPSH >> $logfile 2>&1
4174 if ! $TMPSH >> $logfile 2>&1; then
4175     cat <<EOF
4176 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
4177 variable to another directory and make sure that it is not mounted noexec.
4178 EOF
4179     die "Sanity test failed."
4180 fi
4181
4182 armasm_flags(){
4183     for flag; do
4184         case $flag in
4185             # Filter out MSVC cl.exe options from cflags that shouldn't
4186             # be passed to gas-preprocessor
4187             -M[TD]*)                                            ;;
4188             *)                  echo $flag                      ;;
4189         esac
4190    done
4191 }
4192
4193 cparser_flags(){
4194     for flag; do
4195         case $flag in
4196             -Wno-switch)             echo -Wno-switch-enum ;;
4197             -Wno-format-zero-length) ;;
4198             -Wdisabled-optimization) ;;
4199             -Wno-pointer-sign)       echo -Wno-other ;;
4200             *)                       echo $flag ;;
4201         esac
4202     done
4203 }
4204
4205 msvc_common_flags(){
4206     for flag; do
4207         case $flag in
4208             # In addition to specifying certain flags under the compiler
4209             # specific filters, they must be specified here as well or else the
4210             # generic catch all at the bottom will print the original flag.
4211             -Wall)                ;;
4212             -Wextra)              ;;
4213             -std=c99)             ;;
4214             # Common flags
4215             -fomit-frame-pointer) ;;
4216             -g)                   echo -Z7 ;;
4217             -fno-math-errno)      ;;
4218             -fno-common)          ;;
4219             -fno-signed-zeros)    ;;
4220             -fPIC)                ;;
4221             -mthumb)              ;;
4222             -march=*)             ;;
4223             -lz)                  echo zlib.lib ;;
4224             -lx264)               echo libx264.lib ;;
4225             -lstdc++)             ;;
4226             -l*)                  echo ${flag#-l}.lib ;;
4227             -LARGEADDRESSAWARE)   echo $flag ;;
4228             -L*)                  echo -libpath:${flag#-L} ;;
4229             *)                    echo $flag ;;
4230         esac
4231     done
4232 }
4233
4234 msvc_flags(){
4235     msvc_common_flags "$@"
4236     for flag; do
4237         case $flag in
4238             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4239                                        -wd4554 ;;
4240             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4241                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4242                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4243                                        -wd4307 \
4244                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4245         esac
4246     done
4247 }
4248
4249 icl_flags(){
4250     msvc_common_flags "$@"
4251     for flag; do
4252         case $flag in
4253             # Despite what Intel's documentation says -Wall, which is supported
4254             # on Windows, does enable remarks so disable them here.
4255             -Wall)                echo $flag -Qdiag-disable:remark ;;
4256             -std=c99)             echo -Qstd=c99 ;;
4257             -flto)                echo -ipo ;;
4258         esac
4259     done
4260 }
4261
4262 icc_flags(){
4263     for flag; do
4264         case $flag in
4265             -flto)                echo -ipo ;;
4266             *)                    echo $flag ;;
4267         esac
4268     done
4269 }
4270
4271 suncc_flags(){
4272     for flag; do
4273         case $flag in
4274             -march=*|-mcpu=*)
4275                 case "${flag#*=}" in
4276                     native)                   echo -xtarget=native       ;;
4277                     v9|niagara)               echo -xarch=sparc          ;;
4278                     ultrasparc)               echo -xarch=sparcvis       ;;
4279                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4280                     i586|pentium)             echo -xchip=pentium        ;;
4281                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4282                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4283                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4284                     pentium4*)          echo -xtarget=pentium4           ;;
4285                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4286                     *-sse3)             echo -xarch=sse3                 ;;
4287                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4288                     bonnell)                   echo -xarch=ssse3         ;;
4289                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4290                     westmere)                  echo -xtarget=westmere    ;;
4291                     silvermont)                echo -xarch=sse4_2        ;;
4292                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4293                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4294                                                echo -xarch=avx           ;;
4295                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4296                     btver1)                    echo -xarch=amdsse4a      ;;
4297                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4298                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4299                     k8|opteron|athlon64|athlon-fx)
4300                                                echo -xarch=sse2a         ;;
4301                     athlon*)                   echo -xarch=pentium_proa  ;;
4302                 esac
4303                 ;;
4304             -std=c99)             echo -xc99              ;;
4305             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4306             -fPIC)                echo -KPIC -xcode=pic32 ;;
4307             -W*,*)                echo $flag              ;;
4308             -f*-*|-W*|-mimpure-text)                      ;;
4309             -shared)              echo -G                 ;;
4310             *)                    echo $flag              ;;
4311         esac
4312     done
4313 }
4314
4315 probe_cc(){
4316     pfx=$1
4317     _cc=$2
4318     first=$3
4319
4320     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4321     unset _ld_o _ldflags _ld_lib _ld_path
4322     unset _depflags _DEPCMD _DEPFLAGS
4323     _flags_filter=echo
4324
4325     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4326         true # no-op to avoid reading stdin in following checks
4327     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4328         _type=llvm_gcc
4329         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4330         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4331         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4332         _cflags_speed='-O3'
4333         _cflags_size='-Os'
4334     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4335         _type=gcc
4336         gcc_version=$($_cc --version | head -n1)
4337         gcc_basever=$($_cc -dumpversion)
4338         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4339         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4340         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4341         case $gcc_basever in
4342             2) ;;
4343             2.*) ;;
4344             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4345         esac
4346         if [ "$first" = true ]; then
4347             case $gcc_basever in
4348                 4.2*)
4349                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4350             esac
4351         fi
4352         _cflags_speed='-O3'
4353         _cflags_size='-Os'
4354     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4355         _type=icc
4356         _ident=$($_cc --version | head -n1)
4357         _depflags='-MMD'
4358         _cflags_speed='-O3'
4359         _cflags_size='-Os'
4360         _cflags_noopt='-O1'
4361         _flags_filter=icc_flags
4362     elif $_cc -v 2>&1 | grep -q xlc; then
4363         _type=xlc
4364         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4365         _cflags_speed='-O5'
4366         _cflags_size='-O5 -qcompact'
4367     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4368         test -d "$sysroot" || die "No valid sysroot specified."
4369         _type=armcc
4370         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4371         armcc_conf="$PWD/armcc.conf"
4372         $_cc --arm_linux_configure                 \
4373              --arm_linux_config_file="$armcc_conf" \
4374              --configure_sysroot="$sysroot"        \
4375              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4376              die "Error creating armcc configuration file."
4377         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4378         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4379         as_default="${cross_prefix}gcc"
4380         _depflags='-MMD'
4381         _cflags_speed='-O3'
4382         _cflags_size='-Os'
4383     elif $_cc -v 2>&1 | grep -q clang && ! $_cc -? > /dev/null 2>&1; then
4384         _type=clang
4385         _ident=$($_cc --version 2>/dev/null | head -n1)
4386         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4387         _cflags_speed='-O3'
4388         _cflags_size='-Oz'
4389     elif $_cc -V 2>&1 | grep -q Sun; then
4390         _type=suncc
4391         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4392         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4393         _DEPFLAGS='-xM1 -xc99'
4394         _ldflags='-std=c99'
4395         _cflags_speed='-O5'
4396         _cflags_size='-O5 -xspace'
4397         _flags_filter=suncc_flags
4398     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4399         _type=pathscale
4400         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4401         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4402         _cflags_speed='-O2'
4403         _cflags_size='-Os'
4404         _flags_filter='filter_out -Wdisabled-optimization'
4405     elif $_cc -v 2>&1 | grep -q Open64; then
4406         _type=open64
4407         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4408         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4409         _cflags_speed='-O2'
4410         _cflags_size='-Os'
4411         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4412     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4413         _type=armasm
4414         _ident=$($_cc | head -n1)
4415         # 4509: "This form of conditional instruction is deprecated"
4416         _flags="-nologo -ignore 4509"
4417         _flags_filter=armasm_flags
4418     elif $_cc 2>&1 | grep -q Intel; then
4419         _type=icl
4420         _ident=$($_cc 2>&1 | head -n1)
4421         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4422         # Not only is O3 broken on 13.x+ but it is slower on all previous
4423         # versions (tested) as well.
4424         _cflags_speed="-O2"
4425         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4426         if $_cc 2>&1 | grep -q Linker; then
4427             _ld_o='-out:$@'
4428         else
4429             _ld_o='-Fe$@'
4430         fi
4431         _cc_o='-Fo$@'
4432         _cc_e='-P'
4433         _flags_filter=icl_flags
4434         _ld_lib='lib%.a'
4435         _ld_path='-libpath:'
4436         # -Qdiag-error to make icl error when seeing certain unknown arguments
4437         _flags='-nologo -Qdiag-error:4044,10157'
4438         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4439         # with MSVC which enables it by default.
4440         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4441         disable stripping
4442     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4443         # lld can emulate multiple different linkers; in ms link.exe mode,
4444         # the -? parameter gives the help output which contains an identifyable
4445         # string, while it gives an error in other modes.
4446         _type=lld-link
4447         # The link.exe mode doesn't have a switch for getting the version,
4448         # but we can force it back to gnu mode and get the version from there.
4449         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4450         _ld_o='-out:$@'
4451         _flags_filter=msvc_flags
4452         _ld_lib='lib%.a'
4453         _ld_path='-libpath:'
4454     elif $_cc -nologo- 2>&1 | grep -q Microsoft || { $_cc -v 2>&1 | grep -q clang && $_cc -? > /dev/null 2>&1; }; then
4455         _type=msvc
4456         _ident=$($_cc 2>&1 | head -n1 | tr -d '\r')
4457         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4458         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4459         _cflags_speed="-O2"
4460         _cflags_size="-O1"
4461         _cflags_noopt="-O1"
4462         if $_cc -nologo- 2>&1 | grep -q Linker; then
4463             _ld_o='-out:$@'
4464         else
4465             _ld_o='-Fe$@'
4466         fi
4467         _cc_o='-Fo$@'
4468         _cc_e='-P -Fi$@'
4469         _flags_filter=msvc_flags
4470         _ld_lib='lib%.a'
4471         _ld_path='-libpath:'
4472         _flags='-nologo'
4473         disable stripping
4474     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4475         _type=cparser
4476         _ident=$($_cc --version | head -n1)
4477         _depflags='-MMD'
4478         _cflags_speed='-O4'
4479         _cflags_size='-O2'
4480         _flags_filter=cparser_flags
4481     fi
4482
4483     eval ${pfx}_type=\$_type
4484     eval ${pfx}_ident=\$_ident
4485 }
4486
4487 set_ccvars(){
4488     eval ${1}_C=\${_cc_c-\${${1}_C}}
4489     eval ${1}_E=\${_cc_e-\${${1}_E}}
4490     eval ${1}_O=\${_cc_o-\${${1}_O}}
4491
4492     if [ -n "$_depflags" ]; then
4493         eval ${1}_DEPFLAGS=\$_depflags
4494     else
4495         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4496         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4497         eval DEP${1}FLAGS=\$_flags
4498     fi
4499 }
4500
4501 probe_cc cc "$cc" "true"
4502 cflags_filter=$_flags_filter
4503 cflags_speed=$_cflags_speed
4504 cflags_size=$_cflags_size
4505 cflags_noopt=$_cflags_noopt
4506 add_cflags $_flags $_cflags
4507 cc_ldflags=$_ldflags
4508 set_ccvars CC
4509 set_ccvars CXX
4510
4511 probe_cc hostcc "$host_cc"
4512 host_cflags_filter=$_flags_filter
4513 host_cflags_speed=$_cflags_speed
4514 add_host_cflags  $_flags $_cflags
4515 set_ccvars HOSTCC
4516
4517 test -n "$cc_type" && enable $cc_type ||
4518     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4519
4520 : ${as_default:=$cc}
4521 : ${objcc_default:=$cc}
4522 : ${dep_cc_default:=$cc}
4523 : ${ld_default:=$cc}
4524 : ${host_ld_default:=$host_cc}
4525 set_default ar as objcc dep_cc ld ln_s host_ld windres
4526
4527 probe_cc as "$as"
4528 asflags_filter=$_flags_filter
4529 add_asflags $_flags $_cflags
4530 set_ccvars AS
4531
4532 probe_cc objcc "$objcc"
4533 objcflags_filter=$_flags_filter
4534 add_objcflags $_flags $_cflags
4535 set_ccvars OBJC
4536
4537 probe_cc ld "$ld"
4538 ldflags_filter=$_flags_filter
4539 add_ldflags $_flags $_ldflags
4540 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4541 LD_O=${_ld_o-$LD_O}
4542 LD_LIB=${_ld_lib-$LD_LIB}
4543 LD_PATH=${_ld_path-$LD_PATH}
4544
4545 probe_cc hostld "$host_ld"
4546 host_ldflags_filter=$_flags_filter
4547 add_host_ldflags $_flags $_ldflags
4548 HOSTLD_O=${_ld_o-$HOSTLD_O}
4549
4550 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4551     probe_cc depcc "$dep_cc"
4552     CCDEP=${_DEPCMD:-$DEPCMD}
4553     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4554     DEPCCFLAGS=$_flags
4555 fi
4556
4557 if $ar 2>&1 | grep -q Microsoft; then
4558     arflags="-nologo"
4559     ar_o='-out:$@'
4560 elif $ar 2>&1 | grep -q "\[D\] "; then
4561     arflags="rcD"
4562     ar_o='$@'
4563 else
4564     arflags="rc"
4565     ar_o='$@'
4566 fi
4567
4568 add_cflags $extra_cflags
4569 add_cxxflags $extra_cxxflags
4570 add_objcflags $extra_objcflags
4571 add_asflags $extra_cflags
4572
4573 if test -n "$sysroot"; then
4574     case "$cc_type" in
4575         gcc|llvm_gcc|clang)
4576             add_cppflags --sysroot="$sysroot"
4577             add_ldflags --sysroot="$sysroot"
4578         ;;
4579     esac
4580 fi
4581
4582 if test "$cpu" = host; then
4583     enabled cross_compile &&
4584         die "--cpu=host makes no sense when cross-compiling."
4585
4586     case "$cc_type" in
4587         gcc|llvm_gcc)
4588             check_native(){
4589                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4590                 sed -n "/cc1.*$1=/{
4591                             s/.*$1=\\([^ ]*\\).*/\\1/
4592                             p
4593                             q
4594                         }" $TMPE
4595             }
4596             cpu=$(check_native -march || check_native -mcpu)
4597         ;;
4598         clang)
4599             check_native(){
4600                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4601                 sed -n "/cc1.*-target-cpu /{
4602                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4603                             p
4604                             q
4605                         }" $TMPE
4606             }
4607             cpu=$(check_native -march)
4608         ;;
4609     esac
4610
4611     test "${cpu:-host}" = host &&
4612         die "--cpu=host not supported with compiler $cc"
4613 fi
4614
4615 # Deal with common $arch aliases
4616 case "$arch" in
4617     aarch64|arm64)
4618         arch="aarch64"
4619     ;;
4620     arm*|iPad*|iPhone*)
4621         arch="arm"
4622     ;;
4623     mips*|IP*)
4624         case "$arch" in
4625         *el)
4626             add_cppflags -EL
4627             add_ldflags -EL
4628         ;;
4629         *eb)
4630             add_cppflags -EB
4631             add_ldflags -EB
4632         ;;
4633         esac
4634         arch="mips"
4635     ;;
4636     parisc*|hppa*)
4637         arch="parisc"
4638     ;;
4639     "Power Macintosh"|ppc*|powerpc*)
4640         arch="ppc"
4641     ;;
4642     s390|s390x)
4643         arch="s390"
4644     ;;
4645     sh4|sh)
4646         arch="sh4"
4647     ;;
4648     sun4*|sparc*)
4649         arch="sparc"
4650     ;;
4651     tilegx|tile-gx)
4652         arch="tilegx"
4653     ;;
4654     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4655         arch="x86"
4656     ;;
4657 esac
4658
4659 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4660 enable $arch
4661
4662 # Add processor-specific flags
4663 if enabled aarch64; then
4664
4665     case $cpu in
4666         armv*)
4667             cpuflags="-march=$cpu"
4668         ;;
4669         *)
4670             cpuflags="-mcpu=$cpu"
4671         ;;
4672     esac
4673
4674 elif enabled alpha; then
4675
4676     cpuflags="-mcpu=$cpu"
4677
4678 elif enabled arm; then
4679
4680     check_arm_arch() {
4681         test_cpp_condition stddef.h \
4682             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4683             $cpuflags
4684     }
4685
4686     probe_arm_arch() {
4687         if   check_arm_arch 4;        then echo armv4
4688         elif check_arm_arch 4T;       then echo armv4t
4689         elif check_arm_arch 5;        then echo armv5
4690         elif check_arm_arch 5E;       then echo armv5e
4691         elif check_arm_arch 5T;       then echo armv5t
4692         elif check_arm_arch 5TE;      then echo armv5te
4693         elif check_arm_arch 5TEJ;     then echo armv5te
4694         elif check_arm_arch 6;        then echo armv6
4695         elif check_arm_arch 6J;       then echo armv6j
4696         elif check_arm_arch 6K;       then echo armv6k
4697         elif check_arm_arch 6Z;       then echo armv6z
4698         elif check_arm_arch 6KZ;      then echo armv6zk
4699         elif check_arm_arch 6ZK;      then echo armv6zk
4700         elif check_arm_arch 6T2;      then echo armv6t2
4701         elif check_arm_arch 7;        then echo armv7
4702         elif check_arm_arch 7A  7_A;  then echo armv7-a
4703         elif check_arm_arch 7S;       then echo armv7-a
4704         elif check_arm_arch 7R  7_R;  then echo armv7-r
4705         elif check_arm_arch 7M  7_M;  then echo armv7-m
4706         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4707         elif check_arm_arch 8A  8_A;  then echo armv8-a
4708         fi
4709     }
4710
4711     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4712
4713     case $cpu in
4714         armv*)
4715             cpuflags="-march=$cpu"
4716             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4717         ;;
4718         *)
4719             cpuflags="-mcpu=$cpu"
4720             case $cpu in
4721                 cortex-a*)                               subarch=armv7a  ;;
4722                 cortex-r*)                               subarch=armv7r  ;;
4723                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4724                 arm11*)                                  subarch=armv6   ;;
4725                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4726                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4727                 *)                             subarch=$(probe_arm_arch) ;;
4728             esac
4729         ;;
4730     esac
4731
4732     case "$subarch" in
4733         armv5t*)    enable fast_clz                ;;
4734         armv[6-8]*)
4735             enable fast_clz
4736             disabled fast_unaligned || enable fast_unaligned
4737             ;;
4738     esac
4739
4740 elif enabled avr32; then
4741
4742     case $cpu in
4743         ap7[02]0[0-2])
4744             subarch="avr32_ap"
4745             cpuflags="-mpart=$cpu"
4746         ;;
4747         ap)
4748             subarch="avr32_ap"
4749             cpuflags="-march=$cpu"
4750         ;;
4751         uc3[ab]*)
4752             subarch="avr32_uc"
4753             cpuflags="-mcpu=$cpu"
4754         ;;
4755         uc)
4756             subarch="avr32_uc"
4757             cpuflags="-march=$cpu"
4758         ;;
4759     esac
4760
4761 elif enabled bfin; then
4762
4763     cpuflags="-mcpu=$cpu"
4764
4765 elif enabled mips; then
4766
4767     cpuflags="-march=$cpu"
4768
4769     if [ "$cpu" != "generic" ]; then
4770         disable mips32r2
4771         disable mips32r5
4772         disable mips64r2
4773         disable mips32r6
4774         disable mips64r6
4775         disable loongson2
4776         disable loongson3
4777
4778         case $cpu in
4779             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4780                 enable mips32r2
4781                 disable msa
4782             ;;
4783             p5600|i6400|p6600)
4784                 disable mipsdsp
4785                 disable mipsdspr2
4786             ;;
4787             loongson*)
4788                 enable loongson2
4789                 enable loongson3
4790                 enable local_aligned
4791                 enable simd_align_16
4792                 enable fast_64bit
4793                 enable fast_clz
4794                 enable fast_cmov
4795                 enable fast_unaligned
4796                 disable aligned_stack
4797                 disable mipsfpu
4798                 disable mipsdsp
4799                 disable mipsdspr2
4800                 case $cpu in
4801                     loongson3*)
4802                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4803                     ;;
4804                     loongson2e)
4805                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4806                     ;;
4807                     loongson2f)
4808                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4809                     ;;
4810                 esac
4811             ;;
4812             *)
4813                 # Unknown CPU. Disable everything.
4814                 warn "unknown CPU. Disabling all MIPS optimizations."
4815                 disable mipsfpu
4816                 disable mipsdsp
4817                 disable mipsdspr2
4818                 disable msa
4819                 disable mmi
4820             ;;
4821         esac
4822
4823         case $cpu in
4824             24kc)
4825                 disable mipsfpu
4826                 disable mipsdsp
4827                 disable mipsdspr2
4828             ;;
4829             24kf*)
4830                 disable mipsdsp
4831                 disable mipsdspr2
4832             ;;
4833             24kec|34kc|1004kc)
4834                 disable mipsfpu
4835                 disable mipsdspr2
4836             ;;
4837             24kef*|34kf*|1004kf*)
4838                 disable mipsdspr2
4839             ;;
4840             74kc)
4841                 disable mipsfpu
4842             ;;
4843             p5600)
4844                 enable mips32r5
4845                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4846             ;;
4847             i6400)
4848                 enable mips64r6
4849                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4850             ;;
4851             p6600)
4852                 enable mips64r6
4853                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4854             ;;
4855         esac
4856     else
4857         # We do not disable anything. Is up to the user to disable the unwanted features.
4858         warn 'generic cpu selected'
4859     fi
4860
4861 elif enabled ppc; then
4862
4863     disable ldbrx
4864
4865     case $(tolower $cpu) in
4866         601|ppc601|powerpc601)
4867             cpuflags="-mcpu=601"
4868             disable altivec
4869         ;;
4870         603*|ppc603*|powerpc603*)
4871             cpuflags="-mcpu=603"
4872             disable altivec
4873         ;;
4874         604*|ppc604*|powerpc604*)
4875             cpuflags="-mcpu=604"
4876             disable altivec
4877         ;;
4878         g3|75*|ppc75*|powerpc75*)
4879             cpuflags="-mcpu=750"
4880             disable altivec
4881         ;;
4882         g4|745*|ppc745*|powerpc745*)
4883             cpuflags="-mcpu=7450"
4884             disable vsx
4885         ;;
4886         74*|ppc74*|powerpc74*)
4887             cpuflags="-mcpu=7400"
4888             disable vsx
4889         ;;
4890         g5|970|ppc970|powerpc970)
4891             cpuflags="-mcpu=970"
4892             disable vsx
4893         ;;
4894         power[3-6]*)
4895             cpuflags="-mcpu=$cpu"
4896             disable vsx
4897         ;;
4898         power[7-8]*)
4899             cpuflags="-mcpu=$cpu"
4900         ;;
4901         cell)
4902             cpuflags="-mcpu=cell"
4903             enable ldbrx
4904             disable vsx
4905         ;;
4906         e500mc)
4907             cpuflags="-mcpu=e500mc"
4908             disable altivec
4909         ;;
4910         e500v2)
4911             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4912             disable altivec
4913             disable dcbzl
4914         ;;
4915         e500)
4916             cpuflags="-mcpu=8540 -mhard-float"
4917             disable altivec
4918             disable dcbzl
4919         ;;
4920     esac
4921
4922 elif enabled sparc; then
4923
4924     case $cpu in
4925         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4926             cpuflags="-mcpu=$cpu"
4927         ;;
4928         ultrasparc*|niagara[234])
4929             cpuflags="-mcpu=$cpu"
4930         ;;
4931     esac
4932
4933 elif enabled x86; then
4934
4935     case $cpu in
4936         i[345]86|pentium)
4937             cpuflags="-march=$cpu"
4938             disable i686
4939             disable mmx
4940         ;;
4941         # targets that do NOT support nopl and conditional mov (cmov)
4942         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4943             cpuflags="-march=$cpu"
4944             disable i686
4945         ;;
4946         # targets that do support nopl and conditional mov (cmov)
4947         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4948         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4949         |amdfam10|barcelona|b[dt]ver*|znver*)
4950             cpuflags="-march=$cpu"
4951             enable i686
4952             enable fast_cmov
4953         ;;
4954         # targets that do support conditional mov but on which it's slow
4955         pentium4|pentium4m|prescott|nocona)
4956             cpuflags="-march=$cpu"
4957             enable i686
4958             disable fast_cmov
4959         ;;
4960     esac
4961
4962 fi
4963
4964 if [ "$cpu" != generic ]; then
4965     add_cflags  $cpuflags
4966     add_asflags $cpuflags
4967     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4968 fi
4969
4970 # compiler sanity check
4971 test_exec <<EOF
4972 int main(void){ return 0; }
4973 EOF
4974 if test "$?" != 0; then
4975     echo "$cc is unable to create an executable file."
4976     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4977         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4978         echo "Only do this if you know what cross compiling means."
4979     fi
4980     die "C compiler test failed."
4981 fi
4982
4983 add_cppflags -D_ISOC99_SOURCE
4984 add_cxxflags -D__STDC_CONSTANT_MACROS
4985 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
4986
4987 # some compilers silently accept -std=c11, so we also need to check that the
4988 # version macro is defined properly
4989 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
4990     add_cflags -std=c11 ||
4991     check_cflags -std=c99
4992
4993 check_cppflags -D_FILE_OFFSET_BITS=64
4994 check_cppflags -D_LARGEFILE_SOURCE
4995
4996 add_host_cppflags -D_ISOC99_SOURCE
4997 check_host_cflags -std=c99
4998 check_host_cflags -Wall
4999 check_host_cflags $host_cflags_speed
5000
5001 check_64bit(){
5002     arch32=$1
5003     arch64=$2
5004     expr=${3:-'sizeof(void *) > 4'}
5005     test_code cc "" "int test[2*($expr) - 1]" &&
5006         subarch=$arch64 || subarch=$arch32
5007     enable $subarch
5008 }
5009
5010 case "$arch" in
5011     aarch64|alpha|ia64)
5012         enabled shared && enable_weak pic
5013     ;;
5014     mips)
5015         check_64bit mips mips64 '_MIPS_SIM > 1'
5016         enabled shared && enable_weak pic
5017     ;;
5018     parisc)
5019         check_64bit parisc parisc64
5020         enabled shared && enable_weak pic
5021     ;;
5022     ppc)
5023         check_64bit ppc ppc64
5024         enabled shared && enable_weak pic
5025     ;;
5026     s390)
5027         check_64bit s390 s390x
5028         enabled shared && enable_weak pic
5029     ;;
5030     sparc)
5031         check_64bit sparc sparc64
5032         enabled shared && enable_weak pic
5033     ;;
5034     x86)
5035         check_64bit x86_32 x86_64
5036         # Treat x32 as x64 for now. Note it also needs pic if shared
5037         test "$subarch" = "x86_32" && test_cpp_condition stddef.h 'defined(__x86_64__)' &&
5038             subarch=x86_64 && enable x86_64 && disable x86_32
5039         if enabled x86_64; then
5040             enabled shared && enable_weak pic
5041             objformat=elf64
5042         fi
5043     ;;
5044 esac
5045
5046 # OS specific
5047 case $target_os in
5048     aix)
5049         SHFLAGS=-shared
5050         add_cppflags '-I\$(SRC_PATH)/compat/aix'
5051         enabled shared && add_ldflags -Wl,-brtl
5052         arflags='-Xany -r -c'
5053         striptype=""
5054         ;;
5055     android)
5056         disable symver
5057         enable section_data_rel_ro
5058         add_cflags -fPIE
5059         add_ldexeflags -fPIE -pie
5060         SLIB_INSTALL_NAME='$(SLIBNAME)'
5061         SLIB_INSTALL_LINKS=
5062         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
5063         ;;
5064     haiku)
5065         prefix_default="/boot/common"
5066         network_extralibs="-lnetwork"
5067         host_extralibs=
5068         ;;
5069     sunos)
5070         SHFLAGS='-shared -Wl,-h,$$(@F)'
5071         enabled x86 && append SHFLAGS -mimpure-text
5072         network_extralibs="-lsocket -lnsl"
5073         add_cppflags -D__EXTENSIONS__
5074         # When using suncc to build, the Solaris linker will mark
5075         # an executable with each instruction set encountered by
5076         # the Solaris assembler.  As our libraries contain their own
5077         # guards for processor-specific code, instead suppress
5078         # generation of the HWCAPS ELF section on Solaris x86 only.
5079         enabled_all suncc x86 &&
5080             echo "hwcap_1 = OVERRIDE;" > mapfile &&
5081             add_ldflags -Wl,-M,mapfile
5082         nm_default='nm -P -g'
5083         version_script='-M'
5084         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
5085         ;;
5086     netbsd)
5087         disable symver
5088         oss_indev_extralibs="-lossaudio"
5089         oss_outdev_extralibs="-lossaudio"
5090         enabled gcc || check_ldflags -Wl,-zmuldefs
5091         ;;
5092     openbsd|bitrig)
5093         disable symver
5094         striptype=""
5095         SHFLAGS='-shared'
5096         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
5097         SLIB_INSTALL_LINKS=
5098         oss_indev_extralibs="-lossaudio"
5099         oss_outdev_extralibs="-lossaudio"
5100         ;;
5101     dragonfly)
5102         disable symver
5103         ;;
5104     freebsd)
5105         ;;
5106     bsd/os)
5107         add_extralibs -lpoll -lgnugetopt
5108         strip="strip -d"
5109         ;;
5110     darwin)
5111         enabled ppc && add_asflags -force_cpusubtype_ALL
5112         install_name_dir_default='$(SHLIBDIR)'
5113         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
5114         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
5115         strip="${strip} -x"
5116         add_ldflags -Wl,-dynamic,-search_paths_first
5117         check_cflags -Werror=partial-availability
5118         SLIBSUF=".dylib"
5119         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
5120         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
5121         enabled x86_64 && objformat="macho64" || objformat="macho32"
5122         enabled_any pic shared x86_64 ||
5123             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
5124         check_header dispatch/dispatch.h &&
5125             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
5126         if test -n "$sysroot"; then
5127             is_in -isysroot $cc $CPPFLAGS $CFLAGS || check_cppflags -isysroot $sysroot
5128             is_in -isysroot $ld $LDFLAGS          || check_ldflags  -isysroot $sysroot
5129         fi
5130         version_script='-exported_symbols_list'
5131         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
5132         ;;
5133     msys*)
5134         die "Native MSYS builds are discouraged, please use the MINGW environment."
5135         ;;
5136     mingw32*|mingw64*)
5137         target_os=mingw32
5138         LIBTARGET=i386
5139         if enabled x86_64; then
5140             LIBTARGET="i386:x86-64"
5141         elif enabled arm; then
5142             LIBTARGET="arm"
5143         elif enabled aarch64; then
5144             LIBTARGET="arm64"
5145         fi
5146         if enabled shared; then
5147             # Cannot build both shared and static libs when using dllimport.
5148             disable static
5149         fi
5150         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5151         enabled x86_32 && check_ldflags -Wl,--large-address-aware
5152         shlibdir_default="$bindir_default"
5153         SLIBPREF=""
5154         SLIBSUF=".dll"
5155         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5156         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5157         if test_cmd lib.exe -list; then
5158             SLIB_EXTRA_CMD=-'lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5159             if enabled x86_64; then
5160                 LIBTARGET=x64
5161             fi
5162         else
5163             SLIB_EXTRA_CMD=-'$(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
5164         fi
5165         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5166         SLIB_INSTALL_LINKS=
5167         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5168         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5169         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" AR="$(AR_CMD)" NM="$(NM_CMD)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5170         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--disable-auto-image-base $$(@:$(SLIBSUF)=.def)'
5171         enabled x86_64 && objformat="win64" || objformat="win32"
5172         dlltool="${cross_prefix}dlltool"
5173         ranlib=:
5174         enable dos_paths
5175         check_ldflags -Wl,--nxcompat,--dynamicbase
5176         # Lets work around some stupidity in binutils.
5177         # ld will strip relocations from executables even though we need them
5178         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
5179         # however ld then forgets what the entry point should be (oops) so we
5180         # have to manually (re)set it.
5181         if enabled x86_32; then
5182             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
5183         elif enabled x86_64; then
5184             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
5185             check_ldflags -Wl,--high-entropy-va # binutils 2.25
5186             # Set image base >4GB for extra entropy with HEASLR
5187             add_ldexeflags -Wl,--image-base,0x140000000
5188             append SHFLAGS -Wl,--image-base,0x180000000
5189         fi
5190         ;;
5191     win32|win64)
5192         disable symver
5193         if enabled shared; then
5194             # Link to the import library instead of the normal static library
5195             # for shared libs.
5196             LD_LIB='%.lib'
5197             # Cannot build both shared and static libs with MSVC or icl.
5198             disable static
5199         fi
5200         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
5201         shlibdir_default="$bindir_default"
5202         SLIBPREF=""
5203         SLIBSUF=".dll"
5204         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5205         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5206         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5207         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5208         SLIB_INSTALL_LINKS=
5209         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5210         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5211         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5212         enabled x86_64 && objformat="win64" || objformat="win32"
5213         ranlib=:
5214         enable dos_paths
5215         ;;
5216     cygwin*)
5217         target_os=cygwin
5218         shlibdir_default="$bindir_default"
5219         SLIBPREF="cyg"
5220         SLIBSUF=".dll"
5221         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5222         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5223         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5224         SLIB_INSTALL_LINKS=
5225         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
5226         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
5227         enabled x86_64 && objformat="win64" || objformat="win32"
5228         enable dos_paths
5229         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5230         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5231         ;;
5232     *-dos|freedos|opendos)
5233         network_extralibs="-lsocket"
5234         objformat="coff"
5235         enable dos_paths
5236         add_cppflags -U__STRICT_ANSI__
5237         ;;
5238     linux)
5239         enable section_data_rel_ro
5240         enabled_any arm aarch64 && enable_weak linux_perf
5241         ;;
5242     irix*)
5243         target_os=irix
5244         ranlib="echo ignoring ranlib"
5245         ;;
5246     os/2*)
5247         strip="lxlite -CS"
5248         striptype=""
5249         objformat="aout"
5250         add_cppflags -D_GNU_SOURCE
5251         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
5252         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
5253         LIBSUF="_s.a"
5254         SLIBPREF=""
5255         SLIBSUF=".dll"
5256         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5257         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
5258         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
5259             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
5260             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
5261             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
5262             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
5263         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
5264             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
5265         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5266         SLIB_INSTALL_LINKS=
5267         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
5268         enable dos_paths
5269         enable_weak os2threads
5270         ;;
5271     gnu/kfreebsd)
5272         add_cppflags -D_BSD_SOURCE
5273         ;;
5274     gnu)
5275         ;;
5276     qnx)
5277         add_cppflags -D_QNX_SOURCE
5278         network_extralibs="-lsocket"
5279         ;;
5280     symbian)
5281         SLIBSUF=".dll"
5282         enable dos_paths
5283         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
5284         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
5285         add_ldflags -Wl,--target1-abs,--no-undefined \
5286                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
5287                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
5288         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
5289                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
5290                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
5291         ;;
5292     minix)
5293         ;;
5294     none)
5295         ;;
5296     *)
5297         die "Unknown OS '$target_os'."
5298         ;;
5299 esac
5300
5301 # test if creating links works
5302 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5303 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5304 mkdir "$link_dest"
5305 $ln_s "$link_dest" "$link_name"
5306 touch "$link_dest/test_file"
5307 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5308     # create link to source path
5309     [ -e src ] && rm src
5310     $ln_s "$source_path" src
5311     source_link=src
5312 else
5313     # creating directory links doesn't work
5314     # fall back to using the full source path
5315     source_link="$source_path"
5316 fi
5317 # cleanup
5318 rm -r "$link_dest"
5319 rm -r "$link_name"
5320
5321 # determine libc flavour
5322
5323 probe_libc(){
5324     pfx=$1
5325     pfx_no_=${pfx%_}
5326     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5327     if test_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5328         eval ${pfx}libc_type=uclibc
5329         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5330     elif test_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5331         eval ${pfx}libc_type=glibc
5332         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5333     # MinGW headers can be installed on Cygwin, so check for newlib first.
5334     elif test_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5335         eval ${pfx}libc_type=newlib
5336         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
5337     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5338     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5339         eval ${pfx}libc_type=mingw64
5340         if test_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5341             add_compat msvcrt/snprintf.o
5342             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5343         fi
5344         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5345         eval test \$${pfx_no_}cc_type = "gcc" &&
5346             add_${pfx}cppflags -D__printf__=__gnu_printf__
5347         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5348             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5349     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5350          test_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5351         eval ${pfx}libc_type=mingw32
5352         test_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5353             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5354             die "ERROR: MinGW32 runtime version must be >= 3.15."
5355         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5356         test_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
5357             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5358         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5359             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5360         eval test \$${pfx_no_}cc_type = "gcc" &&
5361             add_${pfx}cppflags -D__printf__=__gnu_printf__
5362     elif test_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5363         eval ${pfx}libc_type=msvcrt
5364         if test_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5365             if [ "$pfx" = host_ ]; then
5366                 add_host_cppflags -Dsnprintf=_snprintf
5367             else
5368                 add_compat strtod.o strtod=avpriv_strtod
5369                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5370                                              _snprintf=avpriv_snprintf  \
5371                                              vsnprintf=avpriv_vsnprintf
5372             fi
5373         fi
5374         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5375         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5376         # 0x601 by default unless something else is set by the user.
5377         # This can easily lead to us detecting functions only present
5378         # in such new versions and producing binaries requiring windows 7.0.
5379         # Therefore explicitly set the default to Vista unless the user has
5380         # set something else on the command line.
5381         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5382         # family. For these cases, configure is free to use any functions
5383         # found in the SDK headers by default. (Alternatively, we could force
5384         # _WIN32_WINNT to 0x0602 in that case.)
5385         test_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5386             { test_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0600; }
5387 #ifdef WINAPI_FAMILY
5388 #include <winapifamily.h>
5389 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5390 #error not desktop
5391 #endif
5392 #endif
5393 EOF
5394         if [ "$pfx" = "" ]; then
5395             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5396             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5397         fi
5398     elif test_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5399         eval ${pfx}libc_type=klibc
5400     elif test_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5401         eval ${pfx}libc_type=bionic
5402     elif test_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5403         eval ${pfx}libc_type=solaris
5404         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5405     fi
5406     test_${pfx}cc <<EOF
5407 #include <time.h>
5408 void *v = localtime_r;
5409 EOF
5410 test "$?" != 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
5411 #include <time.h>
5412 void *v = localtime_r;
5413 EOF
5414
5415     eval test -n "\${${pfx}libc_type}" && enable ${pfx}libc_${libc_type}
5416 }
5417
5418 probe_libc
5419 probe_libc host_
5420
5421 # hacks for compiler/libc/os combinations
5422
5423 case $libc_type in
5424     bionic)
5425         add_compat strtod.o strtod=avpriv_strtod
5426         ;;
5427 esac
5428
5429 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5430     add_cppflags '-I\$(SRC_PATH)/compat/float'
5431
5432 test_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5433
5434 set_default libdir
5435 : ${shlibdir_default:="$libdir"}
5436 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5437
5438 set_default $PATHS_LIST
5439 set_default nm
5440
5441 disabled optimizations || enabled ossfuzz || check_cflags -fomit-frame-pointer
5442
5443 enable_weak_pic() {
5444     disabled pic && return
5445     enable pic
5446     add_cppflags -DPIC
5447     case "$target_os" in
5448     mingw*|cygwin*|win*)
5449         ;;
5450     *)
5451         add_cflags -fPIC
5452         add_asflags -fPIC
5453         ;;
5454     esac
5455 }
5456
5457 enabled pic && enable_weak_pic
5458
5459 test_cc <<EOF || die "Symbol mangling check failed."
5460 int ff_extern;
5461 EOF
5462 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5463 extern_prefix=${sym%%ff_extern*}
5464
5465 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
5466
5467 for restrict_keyword in restrict __restrict__ __restrict ""; do
5468     test_code cc "" "char * $restrict_keyword p" && break
5469 done
5470
5471 check_cc pragma_deprecated "" '_Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"")'
5472
5473 # The global variable ensures the bits appear unchanged in the object file.
5474 test_cc <<EOF || die "endian test failed"
5475 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5476 EOF
5477 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5478
5479 check_cc const_nan math.h "struct { double d; } static const bar[] = { { NAN } }"
5480
5481 if ! enabled ppc64 || enabled bigendian; then
5482     disable vsx
5483 fi
5484
5485 check_gas() {
5486     log "check_gas using '$as' as AS"
5487     # :vararg is used on aarch64, arm and ppc altivec
5488     check_as vararg "
5489 .macro m n, y:vararg=0
5490 \n: .int \y
5491 .endm
5492 m x" || return 1
5493     # .altmacro is only used in arm asm
5494     ! enabled arm || check_as gnu_as ".altmacro"
5495 }
5496
5497 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5498     nogas=:
5499     enabled_any arm aarch64 && nogas=die
5500     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5501     as_noop=-v
5502
5503     case $as_type in
5504         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5505         gcc)  gaspp_as_type=gas ;;
5506         *)    gaspp_as_type=$as_type ;;
5507     esac
5508
5509     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5510
5511     test "${as#*gas-preprocessor.pl}" != "$as" ||
5512     test_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5513         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5514
5515     if ! check_gas ; then
5516         as=${gas:=$as}
5517         check_gas || \
5518             $nogas "GNU assembler not found, install/update gas-preprocessor"
5519     fi
5520
5521     check_as as_func ".func test
5522                       .endfunc"
5523 fi
5524
5525 check_inline_asm inline_asm_labels '"1:\n"'
5526
5527 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5528
5529 if enabled aarch64; then
5530     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5531     # internal assembler in clang 3.3 does not support this instruction
5532     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5533     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5534
5535     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5536
5537 elif enabled alpha; then
5538
5539     check_cflags -mieee
5540
5541 elif enabled arm; then
5542
5543     enabled msvc && check_cpp_condition thumb stddef.h "defined _M_ARMT"
5544     test_cpp_condition stddef.h "defined __thumb__" && test_cc <<EOF && enable_weak thumb
5545 float func(float a, float b){ return a+b; }
5546 EOF
5547     enabled thumb && check_cflags -mthumb || check_cflags -marm
5548
5549     if check_cpp_condition vfp_args stddef.h "defined __ARM_PCS_VFP"; then
5550         :
5551     elif check_cpp_condition vfp_args stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5552         :
5553     elif ! test_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5554         case "${cross_prefix:-$cc}" in
5555             *hardfloat*) enable vfp_args; fpabi=vfp ;;
5556             *) check_ld "cc" vfp_args <<EOF && fpabi=vfp || fpabi=soft ;;
5557 __asm__ (".eabi_attribute 28, 1");
5558 int main(void) { return 0; }
5559 EOF
5560         esac
5561         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5562     fi
5563
5564     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5565     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5566     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5567     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5568     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5569     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5570     enabled setend  && check_insn setend  'setend be'
5571
5572     [ $target_os = linux ] || [ $target_os = android ] ||
5573         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5574             $ARCH_EXT_LIST_ARM
5575
5576     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5577
5578     check_as as_arch_directive ".arch armv7-a"
5579     check_as as_dn_directive   "ra .dn d0.i16"
5580     check_as as_fpu_directive  ".fpu neon"
5581
5582     # llvm's integrated assembler supports .object_arch from llvm 3.5
5583     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
5584         check_as as_object_arch ".object_arch armv4"
5585
5586     # MS armasm fails to assemble our PIC constructs
5587     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5588
5589 elif enabled mips; then
5590
5591     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5592     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5593     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5594
5595     # Enable minimum ISA based on selected options
5596     if enabled mips64; then
5597         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5598         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5599         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5600     else
5601         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5602         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5603         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5604         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5605     fi
5606
5607     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5608     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5609     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_header msa.h || disable msa
5610     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5611     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5612
5613     if enabled bigendian && enabled msa; then
5614         disable msa
5615     fi
5616
5617 elif enabled parisc; then
5618
5619     if enabled gcc; then
5620         case $($cc -dumpversion) in
5621             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5622         esac
5623     fi
5624
5625 elif enabled ppc; then
5626
5627     enable local_aligned
5628
5629     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5630     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5631     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5632     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5633
5634     if enabled altivec; then
5635         check_cflags -maltivec -mabi=altivec
5636
5637         # check if our compiler supports Motorola AltiVec C API
5638         check_cc altivec altivec.h "vector signed int v1 = (vector signed int) { 0 };
5639                                     vector signed int v2 = (vector signed int) { 1 };
5640                                     v1 = vec_add(v1, v2);"
5641
5642         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5643     fi
5644
5645     if enabled vsx; then
5646         check_cflags -mvsx &&
5647         check_cc vsx altivec.h "int v[4] = { 0 };
5648                                 vector signed int v1 = vec_vsx_ld(0, v);"
5649     fi
5650
5651     if enabled power8; then
5652         check_cpp_condition power8 "altivec.h" "defined(_ARCH_PWR8)"
5653     fi
5654
5655 elif enabled x86; then
5656
5657     check_builtin rdtsc    intrin.h   "__rdtsc()"
5658     check_builtin mm_empty mmintrin.h "_mm_empty()"
5659
5660     enable local_aligned
5661
5662     # check whether EBP is available on x86
5663     # As 'i' is stored on the stack, this program will crash
5664     # if the base pointer is used to access it because the
5665     # base pointer is cleared in the inline assembly code.
5666     check_exec_crash <<EOF && enable ebp_available
5667 volatile int i=0;
5668 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5669 return i;
5670 EOF
5671
5672     # check whether EBX is available on x86
5673     check_inline_asm ebx_available '""::"b"(0)' &&
5674         check_inline_asm ebx_available '"":::"%ebx"'
5675
5676     # check whether xmm clobbers are supported
5677     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5678
5679     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5680         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5681
5682     # check whether binutils is new enough to compile SSSE3/MMXEXT
5683     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5684     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5685
5686     probe_x86asm(){
5687         x86asmexe_probe=$1
5688         if test_cmd $x86asmexe_probe -v; then
5689             x86asmexe=$x86asmexe_probe
5690             x86asm_type=nasm
5691             x86asm_debug="-g -F dwarf"
5692             X86ASMDEP=
5693             X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
5694         elif test_cmd $x86asmexe_probe --version; then
5695             x86asmexe=$x86asmexe_probe
5696             x86asm_type=yasm
5697             x86asm_debug="-g dwarf2"
5698             X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
5699             X86ASM_DEPFLAGS=
5700         fi
5701         check_x86asm x86asm "movbe ecx, [5]"
5702     }
5703
5704     if ! disabled_any asm mmx x86asm; then
5705         disable x86asm
5706         for program in $x86asmexe nasm yasm; do
5707             probe_x86asm $program && break
5708         done
5709         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
5710         X86ASMFLAGS="-f $objformat"
5711         enabled pic               && append X86ASMFLAGS "-DPIC"
5712         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
5713         case "$objformat" in
5714             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
5715         esac
5716
5717         check_x86asm avx512_external "vmovdqa32 [eax]{k1}{z}, zmm0"
5718         check_x86asm avx2_external   "vextracti128 xmm0, ymm0, 0"
5719         check_x86asm xop_external    "vpmacsdd xmm0, xmm1, xmm2, xmm3"
5720         check_x86asm fma4_external   "vfmaddps ymm0, ymm1, ymm2, ymm3"
5721         check_x86asm cpunop          "CPU amdnop"
5722     fi
5723
5724     case "$cpu" in
5725         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5726             disable fast_clz
5727         ;;
5728     esac
5729
5730 fi
5731
5732 check_cc intrinsics_neon arm_neon.h "int16x8_t test = vdupq_n_s16(0)"
5733
5734 check_ldflags -Wl,--as-needed
5735 check_ldflags -Wl,-z,noexecstack
5736
5737 if ! disabled network; then
5738     check_func getaddrinfo $network_extralibs
5739     check_func inet_aton $network_extralibs
5740
5741     check_type netdb.h "struct addrinfo"
5742     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5743     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5744     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5745     check_type poll.h "struct pollfd"
5746     check_type netinet/sctp.h "struct sctp_event_subscribe"
5747     check_struct "sys/socket.h" "struct msghdr" msg_flags
5748     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5749     check_type netinet/in.h "struct sockaddr_in6"
5750     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5751     check_type "sys/types.h sys/socket.h" socklen_t
5752
5753     # Prefer arpa/inet.h over winsock2
5754     if check_header arpa/inet.h ; then
5755         check_func closesocket
5756     elif check_header winsock2.h ; then
5757         check_func_headers winsock2.h closesocket -lws2 &&
5758             network_extralibs="-lws2" ||
5759         { check_func_headers winsock2.h closesocket -lws2_32 &&
5760             network_extralibs="-lws2_32"; } || disable winsock2_h network
5761         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5762
5763         check_type ws2tcpip.h socklen_t
5764         check_type ws2tcpip.h "struct addrinfo"
5765         check_type ws2tcpip.h "struct group_source_req"
5766         check_type ws2tcpip.h "struct ip_mreq_source"
5767         check_type ws2tcpip.h "struct ipv6_mreq"
5768         check_type winsock2.h "struct pollfd"
5769         check_struct winsock2.h "struct sockaddr" sa_len
5770         check_type ws2tcpip.h "struct sockaddr_in6"
5771         check_type ws2tcpip.h "struct sockaddr_storage"
5772     else
5773         disable network
5774     fi
5775 fi
5776
5777 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5778 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5779 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5780 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5781 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5782 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5783 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5784
5785 case "$custom_allocator" in
5786     jemalloc)
5787         # jemalloc by default does not use a prefix
5788         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5789     ;;
5790     tcmalloc)
5791         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
5792         malloc_prefix=tc_
5793     ;;
5794 esac
5795
5796 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5797 check_func  ${malloc_prefix}memalign            && enable memalign
5798 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5799
5800 check_func  access
5801 check_func_headers stdlib.h arc4random
5802 check_lib   clock_gettime time.h clock_gettime || check_lib clock_gettime time.h clock_gettime -lrt
5803 check_func  fcntl
5804 check_func  fork
5805 check_func  gethrtime
5806 check_func  getopt
5807 check_func  getrusage
5808 check_func  gettimeofday
5809 check_func  isatty
5810 check_func  mkstemp
5811 check_func  mmap
5812 check_func  mprotect
5813 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5814 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
5815 check_func  sched_getaffinity
5816 check_func  setrlimit
5817 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5818 check_func  strerror_r
5819 check_func  sysconf
5820 check_func  sysctl
5821 check_func  usleep
5822
5823 check_func_headers conio.h kbhit
5824 check_func_headers io.h setmode
5825 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5826 check_func_headers mach/mach_time.h mach_absolute_time
5827 check_func_headers stdlib.h getenv
5828 check_func_headers sys/stat.h lstat
5829
5830 check_func_headers windows.h GetProcessAffinityMask
5831 check_func_headers windows.h GetProcessTimes
5832 check_func_headers windows.h GetSystemTimeAsFileTime
5833 check_func_headers windows.h LoadLibrary
5834 check_func_headers windows.h MapViewOfFile
5835 check_func_headers windows.h PeekNamedPipe
5836 check_func_headers windows.h SetConsoleTextAttribute
5837 check_func_headers windows.h SetConsoleCtrlHandler
5838 check_func_headers windows.h Sleep
5839 check_func_headers windows.h VirtualAlloc
5840 check_func_headers glob.h glob
5841 enabled xlib &&
5842     check_lib xlib "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5843
5844 check_header direct.h
5845 check_header dirent.h
5846 check_header dxgidebug.h
5847 check_header dxva.h
5848 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5849 check_header io.h
5850 check_header linux/perf_event.h
5851 check_header libcrystalhd/libcrystalhd_if.h
5852 check_header malloc.h
5853 check_header net/udplite.h
5854 check_header poll.h
5855 check_header sys/param.h
5856 check_header sys/resource.h
5857 check_header sys/select.h
5858 check_header sys/time.h
5859 check_header sys/un.h
5860 check_header termios.h
5861 check_header unistd.h
5862 check_header valgrind/valgrind.h
5863 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5864 check_header windows.h
5865 check_header X11/extensions/XvMClib.h
5866 check_header asm/types.h
5867
5868 # it seems there are versions of clang in some distros that try to use the
5869 # gcc headers, which explodes for stdatomic
5870 # so we also check that atomics actually work here
5871 check_builtin stdatomic stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0); foo += bar"
5872
5873 check_lib advapi32 "windows.h"            RegCloseKey          -ladvapi32
5874 check_lib bcrypt   "windows.h bcrypt.h"   BCryptGenRandom      -lbcrypt &&
5875     check_cpp_condition bcrypt bcrypt.h "defined BCRYPT_RNG_ALGORITHM"
5876 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
5877 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
5878 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
5879
5880 check_lib android android/native_window.h ANativeWindow_acquire -landroid
5881 check_lib mediandk "stdint.h media/NdkImage.h" AImage_delete -lmediandk
5882 check_lib camera2ndk "stdbool.h stdint.h camera/NdkCameraManager.h" ACameraManager_create -lcamera2ndk
5883
5884 enabled appkit       && check_apple_framework AppKit
5885 enabled audiotoolbox && check_apple_framework AudioToolbox
5886 enabled avfoundation && check_apple_framework AVFoundation
5887 enabled coreimage    && check_apple_framework CoreImage
5888 enabled videotoolbox && check_apple_framework VideoToolbox
5889
5890 check_apple_framework CoreFoundation
5891 check_apple_framework CoreMedia
5892 check_apple_framework CoreVideo
5893
5894 enabled avfoundation && {
5895     disable coregraphics applicationservices
5896     check_lib coregraphics        CoreGraphics/CoreGraphics.h               CGGetActiveDisplayList "-framework CoreGraphics" ||
5897     check_lib applicationservices ApplicationServices/ApplicationServices.h CGGetActiveDisplayList "-framework ApplicationServices"; }
5898
5899 enabled videotoolbox && {
5900     check_lib coreservices CoreServices/CoreServices.h UTGetOSTypeFromString "-framework CoreServices"
5901     check_func_headers CoreMedia/CMFormatDescription.h kCMVideoCodecType_HEVC "-framework CoreMedia"
5902 }
5903
5904 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5905
5906 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5907 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5908 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5909 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5910 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5911
5912 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
5913 check_type "va/va.h va/va_dec_vp8.h" "VAPictureParameterBufferVP8"
5914 check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
5915 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
5916 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
5917 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
5918 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
5919 check_type "va/va.h va/va_enc_mpeg2.h" "VAEncPictureParameterBufferMPEG2"
5920 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
5921 check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
5922
5923 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5924
5925 if ! disabled ffnvcodec; then
5926     check_pkg_config ffnvcodec "ffnvcodec >= 8.1.24.2" \
5927           "ffnvcodec/nvEncodeAPI.h ffnvcodec/dynlink_cuda.h ffnvcodec/dynlink_cuviddec.h ffnvcodec/dynlink_nvcuvid.h" "" || \
5928       check_pkg_config ffnvcodec "ffnvcodec >= 8.0.14.2 ffnvcodec < 8.1" \
5929           "ffnvcodec/nvEncodeAPI.h ffnvcodec/dynlink_cuda.h ffnvcodec/dynlink_cuviddec.h ffnvcodec/dynlink_nvcuvid.h" ""
5930 fi
5931
5932 check_cpp_condition winrt windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)"
5933
5934 if ! disabled w32threads && ! enabled pthreads; then
5935     check_func_headers "windows.h process.h" _beginthreadex &&
5936         check_type "windows.h" CONDITION_VARIABLE &&
5937         check_type "windows.h" INIT_ONCE &&
5938         enable w32threads || disable w32threads
5939     if ! enabled w32threads && enabled winrt; then
5940         check_func_headers "windows.h" CreateThread &&
5941             enable w32threads || disable w32threads
5942     fi
5943 fi
5944
5945 # check for some common methods of building with pthread support
5946 # do this before the optional library checks as some of them require pthreads
5947 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5948     if check_lib pthreads pthread.h pthread_join   -pthread &&
5949        check_lib pthreads pthread.h pthread_create -pthread; then
5950         add_cflags -pthread
5951     elif check_lib pthreads pthread.h pthread_join   -pthreads &&
5952          check_lib pthreads pthread.h pthread_create -pthreads; then
5953         add_cflags -pthreads
5954     elif check_lib pthreads pthread.h pthread_join   -ldl -pthread &&
5955          check_lib pthreads pthread.h pthread_create -ldl -pthread; then
5956         add_cflags -ldl -pthread
5957     elif check_lib pthreads pthread.h pthread_join   -lpthreadGC2 &&
5958          check_lib pthreads pthread.h pthread_create -lpthreadGC2; then
5959         :
5960     elif check_lib pthreads pthread.h pthread_join   -lpthread &&
5961          check_lib pthreads pthread.h pthread_create -lpthread; then
5962         :
5963     elif check_func pthread_join && check_func pthread_create; then
5964         enable pthreads
5965     fi
5966     check_cc pthreads "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER"
5967
5968     if enabled pthreads; then
5969         check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
5970         check_func pthread_cancel $pthreads_extralibs
5971     fi
5972 fi
5973
5974 enabled  zlib && { check_pkg_config zlib zlib "zlib.h" zlibVersion ||
5975                    check_lib zlib   zlib.h      zlibVersion    -lz; }
5976 enabled bzlib && check_lib bzlib bzlib.h BZ2_bzlibVersion    -lbz2
5977 enabled  lzma && check_lib lzma   lzma.h lzma_version_number -llzma
5978
5979 # On some systems dynamic loading requires no extra linker flags
5980 check_lib libdl dlfcn.h "dlopen dlsym" || check_lib libdl dlfcn.h "dlopen dlsym" -ldl
5981
5982 check_lib libm math.h sin -lm
5983
5984 atan2f_args=2
5985 copysign_args=2
5986 hypot_args=2
5987 ldexpf_args=2
5988 powf_args=2
5989
5990 for func in $MATH_FUNCS; do
5991     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
5992 done
5993
5994 for func in $COMPLEX_FUNCS; do
5995     eval check_complexfunc $func \${${func}_args:-1}
5996 done
5997
5998 # these are off by default, so fail if requested and not available
5999 enabled cuda_sdk          && require cuda_sdk cuda.h cuCtxCreate -lcuda
6000 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
6001 enabled decklink          && { require_header DeckLinkAPI.h &&
6002                                { test_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a060100" || die "ERROR: Decklink API version must be >= 10.6.1."; } }
6003 enabled libndi_newtek     && require_header Processing.NDI.Lib.h
6004 enabled frei0r            && require_header frei0r.h
6005 enabled gmp               && require gmp gmp.h mpz_export -lgmp
6006 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init
6007 enabled jni               && { [ $target_os = "android" ] && check_header jni.h && enabled pthreads || die "ERROR: jni not found"; }
6008 enabled ladspa            && require_header ladspa.h
6009 enabled libaom            && require_pkg_config libaom "aom >= 1.0.0" aom/aom_codec.h aom_codec_version
6010 enabled lv2               && require_pkg_config lv2 lilv-0 "lilv/lilv.h" lilv_world_new
6011 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
6012 enabled libass            && require_pkg_config libass libass ass/ass.h ass_library_init
6013 enabled libbluray         && require_pkg_config libbluray libbluray libbluray/bluray.h bd_open
6014 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
6015 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
6016                              { check_lib libcelt celt/celt.h celt_decoder_create_custom -lcelt0 ||
6017                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
6018 enabled libcaca           && require_pkg_config libcaca caca caca.h caca_create_canvas
6019 enabled libcodec2         && require libcodec2 codec2/codec2.h codec2_create -lcodec2
6020 enabled libdavs2          && require_pkg_config libdavs2 "davs2 >= 1.5.115" davs2.h davs2_decoder_open
6021 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
6022 enabled libdrm            && require_pkg_config libdrm libdrm xf86drm.h drmGetVersion
6023 enabled libfdk_aac        && { check_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
6024                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
6025                                  warn "using libfdk without pkg-config"; } }
6026 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"
6027 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_extralibs
6028 enabled fontconfig        && enable libfontconfig
6029 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
6030 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
6031 enabled libfribidi        && require_pkg_config libfribidi fribidi fribidi.h fribidi_version_info
6032 enabled libgme            && { check_pkg_config libgme libgme gme/gme.h gme_new_emu ||
6033                                require libgme gme/gme.h gme_new_emu -lgme -lstdc++; }
6034 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
6035                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
6036                                done || die "ERROR: libgsm not found"; }
6037 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc $pthreads_extralibs
6038 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
6039 enabled liblensfun        && require_pkg_config liblensfun lensfun lensfun.h lf_db_new
6040 # While it may appear that require is being used as a pkg-config
6041 # fallback for libmfx, it is actually being used to detect a different
6042 # installation route altogether.  If libmfx is installed via the Intel
6043 # Media SDK or Intel Media Server Studio, these don't come with
6044 # pkg-config support.  Instead, users should make sure that the build
6045 # can find the libraries and headers through other means.
6046 enabled libmfx            && { check_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit ||
6047                                { require libmfx "mfx/mfxvideo.h" MFXInit "-llibmfx $advapi32_extralibs" && warn "using libmfx without pkg-config"; } }
6048 enabled libmodplug        && require_pkg_config libmodplug libmodplug libmodplug/modplug.h ModPlug_Load
6049 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame $libm_extralibs
6050 enabled libmysofa         && { check_pkg_config libmysofa libmysofa mysofa.h mysofa_load ||
6051                                require libmysofa mysofa.h mysofa_load -lmysofa $zlib_extralibs; }
6052 enabled libnpp            && { check_lib libnpp npp.h nppGetLibVersion -lnppig -lnppicc -lnppc ||
6053                                check_lib libnpp npp.h nppGetLibVersion -lnppi -lnppc ||
6054                                die "ERROR: libnpp not found"; }
6055 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
6056 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
6057 enabled libopencv         && { check_header opencv2/core/core_c.h &&
6058                                { check_pkg_config libopencv opencv opencv2/core/core_c.h cvCreateImageHeader ||
6059                                  require libopencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
6060                                require_pkg_config libopencv opencv opencv/cxcore.h cvCreateImageHeader; }
6061 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
6062 enabled libopenjpeg       && { check_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version ||
6063                                { require_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } }
6064 enabled libopenmpt        && require_pkg_config libopenmpt "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create -lstdc++ && append libopenmpt_extralibs "-lstdc++"
6065 enabled libopus           && {
6066     enabled libopus_decoder && {
6067         require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
6068     }
6069     enabled libopus_encoder && {
6070         require_pkg_config libopus opus opus_multistream.h opus_multistream_surround_encoder_create
6071     }
6072 }
6073 enabled libpulse          && require_pkg_config libpulse libpulse pulse/pulseaudio.h pa_context_new
6074 enabled librsvg           && require_pkg_config librsvg librsvg-2.0 librsvg-2.0/librsvg/rsvg.h rsvg_handle_render_cairo
6075 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
6076 enabled librubberband     && require_pkg_config librubberband "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new -lstdc++ && append librubberband_extralibs "-lstdc++"
6077 enabled libshine          && require_pkg_config libshine shine shine/layer3.h shine_encode_buffer
6078 enabled libsmbclient      && { check_pkg_config libsmbclient smbclient libsmbclient.h smbc_init ||
6079                                require libsmbclient libsmbclient.h smbc_init -lsmbclient; }
6080 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy -lstdc++
6081 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
6082 enabled libssh            && require_pkg_config libssh libssh libssh/sftp.h sftp_init
6083 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init
6084 enabled libsrt            && require_pkg_config libsrt "srt >= 1.2.0" srt/srt.h srt_socket
6085 enabled libtensorflow     && require libtensorflow tensorflow/c/c_api.h TF_Version -ltensorflow
6086 enabled libtesseract      && require_pkg_config libtesseract tesseract tesseract/capi.h TessBaseAPICreate
6087 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
6088 enabled libtls            && require_pkg_config libtls libtls tls.h tls_configure
6089 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
6090                              { check_lib libtwolame twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
6091                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
6092 enabled libv4l2           && require_pkg_config libv4l2 libv4l2 libv4l2.h v4l2_ioctl
6093 enabled libvidstab        && require_pkg_config libvidstab "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
6094 enabled libvmaf           && require_pkg_config libvmaf "libvmaf >= 1.3.9" libvmaf.h compute_vmaf
6095 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
6096 enabled libvorbis         && require_pkg_config libvorbis vorbis vorbis/codec.h vorbis_info_init &&
6097                              require_pkg_config libvorbisenc vorbisenc vorbis/vorbisenc.h vorbis_encode_init
6098
6099 enabled libvpx            && {
6100     enabled libvpx_vp8_decoder && {
6101         check_pkg_config libvpx_vp8_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
6102             check_lib libvpx_vp8_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_dec_init_ver VPX_IMG_FMT_HIGHBITDEPTH" -lvpx ||
6103                 die "ERROR: libvpx decoder version must be >=1.4.0";
6104     }
6105     enabled libvpx_vp8_encoder && {
6106         check_pkg_config libvpx_vp8_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
6107             check_lib libvpx_vp8_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VPX_IMG_FMT_HIGHBITDEPTH" -lvpx ||
6108                 die "ERROR: libvpx encoder version must be >=1.4.0";
6109     }
6110     enabled libvpx_vp9_decoder && {
6111         check_pkg_config libvpx_vp9_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
6112             check_lib libvpx_vp9_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx VPX_IMG_FMT_HIGHBITDEPTH" "-lvpx $libm_extralibs"
6113     }
6114     enabled libvpx_vp9_encoder && {
6115         check_pkg_config libvpx_vp9_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
6116             check_lib libvpx_vp9_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VPX_IMG_FMT_HIGHBITDEPTH" "-lvpx $libm_extralibs"
6117     }
6118     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
6119         die "libvpx enabled but no supported decoders found"
6120     fi
6121 }
6122
6123 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
6124 enabled libwebp           && {
6125     enabled libwebp_encoder      && require_pkg_config libwebp "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
6126     enabled libwebp_anim_encoder && check_pkg_config libwebp_anim_encoder "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit; }
6127 enabled libx264           && { check_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode ||
6128                                { require libx264 "stdint.h x264.h" x264_encoder_encode "-lx264 $pthreads_extralibs $libm_extralibs" &&
6129                                  warn "using libx264 without pkg-config"; } } &&
6130                              require_cpp_condition x264.h "X264_BUILD >= 118" &&
6131                              check_cpp_condition libx262 x264.h "X264_MPEG2"
6132 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
6133                              require_cpp_condition x265.h "X265_BUILD >= 68"
6134 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode "-lxavs $pthreads_extralibs $libm_extralibs"
6135 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
6136 enabled libzimg           && require_pkg_config libzimg "zimg >= 2.7.0" zimg.h zimg_get_api_version
6137 enabled libzmq            && require_pkg_config libzmq libzmq zmq.h zmq_ctx_new
6138 enabled libzvbi           && require_pkg_config libzvbi zvbi-0.2 libzvbi.h vbi_decoder_new &&
6139                              { test_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
6140                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
6141 enabled libxml2           && require_pkg_config libxml2 libxml-2.0 libxml2/libxml/xmlversion.h xmlCheckVersion
6142 enabled mbedtls           && { check_pkg_config mbedtls mbedtls mbedtls/x509_crt.h mbedtls_x509_crt_init ||
6143                                check_pkg_config mbedtls mbedtls mbedtls/ssl.h mbedtls_ssl_init ||
6144                                check_lib mbedtls mbedtls/ssl.h mbedtls_ssl_init -lmbedtls -lmbedx509 -lmbedcrypto ||
6145                                die "ERROR: mbedTLS not found"; }
6146 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
6147 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
6148                                { ! enabled cross_compile &&
6149                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
6150                                  add_ldflags -L/opt/vc/lib/ &&
6151                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
6152                                die "ERROR: mmal not found" &&
6153                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
6154 enabled openal            && { { for al_extralibs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
6155                                check_lib openal 'AL/al.h' alGetError "${al_extralibs}" && break; done } ||
6156                                die "ERROR: openal not found"; } &&
6157                              { test_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
6158                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
6159 enabled opencl            && { check_pkg_config opencl OpenCL CL/cl.h clEnqueueNDRangeKernel ||
6160                                check_lib opencl OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
6161                                check_lib opencl CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
6162                                die "ERROR: opencl not found"; } &&
6163                              { test_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
6164                                test_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
6165                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
6166 enabled opengl            && { check_lib opengl GL/glx.h glXGetProcAddress "-lGL" ||
6167                                check_lib opengl windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
6168                                check_lib opengl OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
6169                                check_lib opengl ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
6170                                die "ERROR: opengl not found."
6171                              }
6172 enabled omx               && require_header OMX_Core.h
6173 enabled omx_rpi           && { check_header OMX_Core.h ||
6174                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_header OMX_Core.h ; } ||
6175                                die "ERROR: OpenMAX IL headers not found"; } && enable omx
6176 enabled openssl           && { check_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
6177                                check_pkg_config openssl openssl openssl/ssl.h SSL_library_init ||
6178                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
6179                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
6180                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
6181                                die "ERROR: openssl not found"; }
6182 enabled rkmpp             && { require_pkg_config rkmpp rockchip_mpp  rockchip/rk_mpi.h mpp_create &&
6183                                require_pkg_config rockchip_mpp "rockchip_mpp >= 1.3.7" rockchip/rk_mpi.h mpp_create &&
6184                                { enabled libdrm ||
6185                                  die "ERROR: rkmpp requires --enable-libdrm"; }
6186                              }
6187 enabled vapoursynth       && require_pkg_config vapoursynth "vapoursynth-script >= 42" VSScript.h vsscript_init
6188
6189
6190 if enabled gcrypt; then
6191     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
6192     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
6193         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
6194         gcrypt_extralibs=$("${GCRYPT_CONFIG}" --libs)
6195         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_extralibs ||
6196             die "ERROR: gcrypt not found"
6197         add_cflags $gcrypt_cflags
6198     else
6199         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
6200     fi
6201 fi
6202
6203 if enabled sdl2; then
6204     SDL2_CONFIG="${cross_prefix}sdl2-config"
6205     test_pkg_config sdl2 "sdl2 >= 2.0.1 sdl2 < 2.1.0" SDL_events.h SDL_PollEvent
6206     if disabled sdl2 && "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
6207         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
6208         sdl2_extralibs=$("${SDL2_CONFIG}" --libs)
6209         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
6210         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
6211         check_func_headers SDL_events.h SDL_PollEvent $sdl2_extralibs $sdl2_cflags &&
6212             enable sdl2
6213     fi
6214     if test $target_os = "mingw32"; then
6215         sdl2_extralibs=$(filter_out '-mwindows' $sdl2_extralibs)
6216     fi
6217 fi
6218
6219 if enabled decklink; then
6220     case $target_os in
6221         mingw32*|mingw64*|win32|win64)
6222             decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
6223             decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
6224             ;;
6225     esac
6226 fi
6227
6228 enabled securetransport &&
6229     check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
6230     check_lib securetransport "Security/SecureTransport.h Security/Security.h" "SSLCreateContext" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" ||
6231         disable securetransport
6232
6233 enabled securetransport &&
6234     check_func SecItemImport "-Wl,-framework,CoreFoundation -Wl,-framework,Security"
6235
6236 enabled schannel &&
6237     check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
6238     test_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" &&
6239     schannel_extralibs="-lsecur32" ||
6240         disable schannel
6241
6242 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
6243 enabled makeinfo \
6244     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
6245     && enable makeinfo_html || disable makeinfo_html
6246 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
6247 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
6248 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
6249 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
6250
6251 # check V4L2 codecs available in the API
6252 check_header linux/fb.h
6253 check_header linux/videodev2.h
6254 test_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6255 check_cc v4l2_m2m linux/videodev2.h "int i = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_VIDEO_M2M | V4L2_BUF_FLAG_LAST;"
6256 check_cc vc1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VC1_ANNEX_G;"
6257 check_cc mpeg1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG1;"
6258 check_cc mpeg2_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG2;"
6259 check_cc mpeg4_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG4;"
6260 check_cc hevc_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_HEVC;"
6261 check_cc h263_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H263;"
6262 check_cc h264_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H264;"
6263 check_cc vp8_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP8;"
6264 check_cc vp9_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP9;"
6265
6266 check_header sys/videoio.h
6267 test_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6268
6269 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
6270 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
6271 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
6272 # w32api 3.12 had it defined wrong
6273 check_cpp_condition vfwcap_defines vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER"
6274
6275 check_type "dshow.h" IBaseFilter
6276
6277 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
6278 check_header "dev/bktr/ioctl_meteor.h dev/bktr/ioctl_bt848.h"                   ||
6279     check_header "machine/ioctl_meteor.h machine/ioctl_bt848.h"                 ||
6280     check_header "dev/video/meteor/ioctl_meteor.h dev/video/bktr/ioctl_bt848.h" ||
6281     check_header "dev/ic/bt8xx.h"
6282
6283 if check_struct sys/soundcard.h audio_buf_info bytes; then
6284     enable_sanitized sys/soundcard.h
6285 else
6286     test_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_sanitized sys/soundcard.h
6287     #include <sys/soundcard.h>
6288     audio_buf_info abc;
6289 EOF
6290 fi
6291
6292 enabled alsa && check_pkg_config alsa alsa "alsa/asoundlib.h" snd_pcm_htimestamp ||
6293     check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound
6294
6295 enabled libjack &&
6296     require_pkg_config libjack jack jack/jack.h jack_port_get_latency_range
6297
6298 enabled sndio && check_lib sndio sndio.h sio_open -lsndio
6299
6300 if enabled libcdio; then
6301     check_pkg_config libcdio libcdio_paranoia "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open ||
6302     check_pkg_config libcdio libcdio_paranoia "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open ||
6303     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6304     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6305     die "ERROR: No usable libcdio/cdparanoia found"
6306 fi
6307
6308 enabled libxcb && check_pkg_config libxcb "xcb >= 1.4" xcb/xcb.h xcb_connect ||
6309     disable libxcb_shm libxcb_shape libxcb_xfixes
6310
6311 if enabled libxcb; then
6312     enabled libxcb_shm    && check_pkg_config libxcb_shm    xcb-shm    xcb/shm.h    xcb_shm_attach
6313     enabled libxcb_shape  && check_pkg_config libxcb_shape  xcb-shape  xcb/shape.h  xcb_shape_get_rectangles
6314     enabled libxcb_xfixes && check_pkg_config libxcb_xfixes xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image
6315 fi
6316
6317 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6318
6319 # d3d11va requires linking directly to dxgi and d3d11 if not building for
6320 # the desktop api partition
6321 test_cpp <<EOF && enable uwp && d3d11va_extralibs="-ldxgi -ld3d11"
6322 #ifdef WINAPI_FAMILY
6323 #include <winapifamily.h>
6324 #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
6325 #error desktop, not uwp
6326 #else
6327 // WINAPI_FAMILY_APP, WINAPI_FAMILY_PHONE_APP => UWP
6328 #endif
6329 #else
6330 #error no family set
6331 #endif
6332 EOF
6333
6334 enabled vaapi &&
6335     check_lib vaapi va/va.h vaInitialize -lva
6336
6337 enabled vaapi &&
6338     check_cc vaapi "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)"
6339
6340 if enabled vaapi; then
6341     check_lib vaapi_drm "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm
6342     check_lib vaapi_x11 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 -lX11
6343 fi
6344
6345 enabled vaapi &&
6346     check_cpp_condition vaapi_1 "va/va.h" "VA_CHECK_VERSION(1, 0, 0)"
6347
6348 if enabled_all opencl libdrm ; then
6349     check_type "CL/cl_intel.h" "clCreateImageFromFdINTEL_fn" &&
6350         enable opencl_drm_beignet
6351     check_func_headers "CL/cl_ext.h" clImportMemoryARM &&
6352         enable opencl_drm_arm
6353 fi
6354
6355 if enabled_all opencl vaapi ; then
6356     enabled opencl_drm_beignet && enable opencl_vaapi_beignet
6357     check_type "CL/cl.h CL/va_ext.h" "clCreateFromVA_APIMediaSurfaceINTEL_fn" &&
6358         enable opencl_vaapi_intel_media
6359 fi
6360
6361 if enabled_all opencl dxva2 ; then
6362     check_type "CL/cl_dx9_media_sharing.h" cl_dx9_surface_info_khr &&
6363         enable opencl_dxva2
6364 fi
6365
6366 if enabled_all opencl d3d11va ; then
6367     check_type "CL/cl_d3d11.h" clGetDeviceIDsFromD3D11KHR_fn &&
6368         enable opencl_d3d11
6369 fi
6370
6371 enabled vdpau &&
6372     check_cpp_condition vdpau vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP"
6373
6374 enabled vdpau &&
6375     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
6376
6377 enabled crystalhd && check_lib crystalhd "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd
6378
6379 if enabled x86; then
6380     case $target_os in
6381         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6382             ;;
6383         *)
6384             disable ffnvcodec cuvid nvdec nvenc
6385             ;;
6386     esac
6387 else
6388     disable ffnvcodec cuvid nvdec nvenc
6389 fi
6390
6391 enabled ffnvcodec && enable cuda
6392
6393 enabled nvenc &&
6394     test_cc -I$source_path <<EOF || disable nvenc
6395 #include <ffnvcodec/nvEncodeAPI.h>
6396 NV_ENCODE_API_FUNCTION_LIST flist;
6397 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6398 int main(void) { return 0; }
6399 EOF
6400
6401 enabled amf &&
6402     check_cpp_condition amf "AMF/core/Version.h" \
6403         "(AMF_VERSION_MAJOR << 48 | AMF_VERSION_MINOR << 32 | AMF_VERSION_RELEASE << 16 | AMF_VERSION_BUILD_NUM) >= 0x0001000400040001"
6404
6405 # Funny iconv installations are not unusual, so check it after all flags have been set
6406 if enabled libc_iconv; then
6407     check_func_headers iconv.h iconv
6408 elif enabled iconv; then
6409     check_func_headers iconv.h iconv || check_lib iconv iconv.h iconv -liconv
6410 fi
6411
6412 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6413
6414 # add some useful compiler flags if supported
6415 check_cflags -Wdeclaration-after-statement
6416 check_cflags -Wall
6417 check_cflags -Wdisabled-optimization
6418 check_cflags -Wpointer-arith
6419 check_cflags -Wredundant-decls
6420 check_cflags -Wwrite-strings
6421 check_cflags -Wtype-limits
6422 check_cflags -Wundef
6423 check_cflags -Wmissing-prototypes
6424 check_cflags -Wno-pointer-to-int-cast
6425 check_cflags -Wstrict-prototypes
6426 check_cflags -Wempty-body
6427
6428 if enabled extra_warnings; then
6429     check_cflags -Wcast-qual
6430     check_cflags -Wextra
6431     check_cflags -Wpedantic
6432 fi
6433
6434 check_disable_warning(){
6435     warning_flag=-W${1#-Wno-}
6436     test_cflags $unknown_warning_flags $warning_flag && add_cflags $1
6437 }
6438
6439 test_cflags -Werror=unused-command-line-argument &&
6440     append unknown_warning_flags "-Werror=unused-command-line-argument"
6441 test_cflags -Werror=unknown-warning-option &&
6442     append unknown_warning_flags "-Werror=unknown-warning-option"
6443
6444 check_disable_warning -Wno-parentheses
6445 check_disable_warning -Wno-switch
6446 check_disable_warning -Wno-format-zero-length
6447 check_disable_warning -Wno-pointer-sign
6448 check_disable_warning -Wno-unused-const-variable
6449 check_disable_warning -Wno-bool-operation
6450
6451 check_disable_warning_headers(){
6452     warning_flag=-W${1#-Wno-}
6453     test_cflags $warning_flag && add_cflags_headers $1
6454 }
6455
6456 check_disable_warning_headers -Wno-deprecated-declarations
6457 check_disable_warning_headers -Wno-unused-variable
6458
6459 test_cc <<EOF && enable blocks_extension
6460 void (^block)(void);
6461 EOF
6462
6463 # add some linker flags
6464 check_ldflags -Wl,--warn-common
6465 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6466 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir && add_ldsoflags -Wl,-rpath,$libdir
6467 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6468
6469 # add some strip flags
6470 check_stripflags -x
6471
6472 enabled neon_clobber_test &&
6473     check_ldflags -Wl,--wrap,avcodec_open2              \
6474                   -Wl,--wrap,avcodec_decode_audio4      \
6475                   -Wl,--wrap,avcodec_decode_video2      \
6476                   -Wl,--wrap,avcodec_decode_subtitle2   \
6477                   -Wl,--wrap,avcodec_encode_audio2      \
6478                   -Wl,--wrap,avcodec_encode_video2      \
6479                   -Wl,--wrap,avcodec_encode_subtitle    \
6480                   -Wl,--wrap,avcodec_send_packet        \
6481                   -Wl,--wrap,avcodec_receive_packet     \
6482                   -Wl,--wrap,avcodec_send_frame         \
6483                   -Wl,--wrap,avcodec_receive_frame      \
6484                   -Wl,--wrap,swr_convert                \
6485                   -Wl,--wrap,avresample_convert ||
6486     disable neon_clobber_test
6487
6488 enabled xmm_clobber_test &&
6489     check_ldflags -Wl,--wrap,avcodec_open2              \
6490                   -Wl,--wrap,avcodec_decode_audio4      \
6491                   -Wl,--wrap,avcodec_decode_video2      \
6492                   -Wl,--wrap,avcodec_decode_subtitle2   \
6493                   -Wl,--wrap,avcodec_encode_audio2      \
6494                   -Wl,--wrap,avcodec_encode_video2      \
6495                   -Wl,--wrap,avcodec_encode_subtitle    \
6496                   -Wl,--wrap,avcodec_send_packet        \
6497                   -Wl,--wrap,avcodec_receive_packet     \
6498                   -Wl,--wrap,avcodec_send_frame         \
6499                   -Wl,--wrap,avcodec_receive_frame      \
6500                   -Wl,--wrap,swr_convert                \
6501                   -Wl,--wrap,avresample_convert         \
6502                   -Wl,--wrap,sws_scale ||
6503     disable xmm_clobber_test
6504
6505 check_ld "cc" proper_dce <<EOF
6506 extern const int array[512];
6507 static inline int func(void) { return array[0]; }
6508 int main(void) { return 0; }
6509 EOF
6510
6511 if enabled proper_dce; then
6512     echo "X { local: *; };" > $TMPV
6513     if test_ldflags -Wl,${version_script},$TMPV; then
6514         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6515         quotes='""'
6516         test_cc <<EOF && enable symver_asm_label
6517 void ff_foo(void) __asm__ ("av_foo@VERSION");
6518 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6519 EOF
6520         test_cc <<EOF && enable symver_gnu_asm
6521 __asm__(".symver ff_foo,av_foo@VERSION");
6522 void ff_foo(void) {}
6523 EOF
6524     fi
6525 fi
6526
6527 if [ -z "$optflags" ]; then
6528     if enabled small; then
6529         optflags=$cflags_size
6530     elif enabled optimizations; then
6531         optflags=$cflags_speed
6532     else
6533         optflags=$cflags_noopt
6534     fi
6535 fi
6536
6537 if [ -z "$nvccflags" ]; then
6538     nvccflags=$nvccflags_default
6539 fi
6540
6541 if enabled x86_64 || enabled ppc64 || enabled aarch64; then
6542     nvccflags="$nvccflags -m64"
6543 else
6544     nvccflags="$nvccflags -m32"
6545 fi
6546
6547 check_optflags(){
6548     check_cflags "$@"
6549     enabled lto && check_ldflags "$@"
6550 }
6551
6552 check_optflags $optflags
6553 check_optflags -fno-math-errno
6554 check_optflags -fno-signed-zeros
6555
6556 if enabled lto; then
6557     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6558     check_cflags  -flto
6559     check_ldflags -flto $cpuflags
6560     disable inline_asm_direct_symbol_refs
6561 fi
6562
6563 enabled ftrapv && check_cflags -ftrapv
6564
6565 test_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6566 int x;
6567 EOF
6568
6569
6570 if enabled icc; then
6571     # Just warnings, no remarks
6572     check_cflags -w1
6573     # -wd: Disable following warnings
6574     # 144, 167, 556: -Wno-pointer-sign
6575     # 188: enumerated type mixed with another type
6576     # 1292: attribute "foo" ignored
6577     # 1419: external declaration in primary source file
6578     # 10006: ignoring unknown option -fno-signed-zeros
6579     # 10148: ignoring unknown option -Wno-parentheses
6580     # 10156: ignoring option '-W'; no argument required
6581     # 13200: No EMMS instruction before call to function
6582     # 13203: No EMMS instruction before return from function
6583     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6584     # 11030: Warning unknown option --as-needed
6585     # 10156: ignoring option '-export'; no argument required
6586     check_ldflags -wd10156,11030
6587     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6588     enable ebp_available
6589     # The test above does not test linking
6590     enabled lto && disable symver_asm_label
6591     if enabled x86_32; then
6592         icc_version=$($cc -dumpversion)
6593         test ${icc_version%%.*} -ge 11 &&
6594             check_cflags -falign-stack=maintain-16-byte ||
6595             disable aligned_stack
6596     fi
6597 elif enabled gcc; then
6598     check_optflags -fno-tree-vectorize
6599     check_cflags -Werror=format-security
6600     check_cflags -Werror=implicit-function-declaration
6601     check_cflags -Werror=missing-prototypes
6602     check_cflags -Werror=return-type
6603     check_cflags -Werror=vla
6604     check_cflags -Wformat
6605     check_cflags -fdiagnostics-color=auto
6606     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6607     if enabled x86_32; then
6608         case $target_os in
6609         *bsd*)
6610             # BSDs don't guarantee a 16 byte aligned stack, but we can
6611             # request GCC to try to maintain 16 byte alignment throughout
6612             # function calls. Library entry points that might call assembly
6613             # functions align the stack. (The parameter means 2^4 bytes.)
6614             check_cflags -mpreferred-stack-boundary=4
6615             ;;
6616         esac
6617     fi
6618 elif enabled llvm_gcc; then
6619     check_cflags -mllvm -stack-alignment=16
6620 elif enabled clang; then
6621     if enabled x86_32; then
6622         # Clang doesn't support maintaining alignment without assuming the
6623         # same alignment in every function. If 16 byte alignment would be
6624         # enabled, one would also have to either add attribute_align_arg on
6625         # every single entry point into the libraries or enable -mstackrealign
6626         # (doing stack realignment in every single function).
6627         case $target_os in
6628         mingw32|win32|*bsd*)
6629             disable aligned_stack
6630             ;;
6631         *)
6632             check_cflags -mllvm -stack-alignment=16
6633             check_cflags -mstack-alignment=16
6634             ;;
6635         esac
6636     else
6637         check_cflags -mllvm -stack-alignment=16
6638         check_cflags -mstack-alignment=16
6639     fi
6640     check_cflags -Qunused-arguments
6641     check_cflags -Werror=implicit-function-declaration
6642     check_cflags -Werror=missing-prototypes
6643     check_cflags -Werror=return-type
6644 elif enabled cparser; then
6645     add_cflags -Wno-missing-variable-declarations
6646     add_cflags -Wno-empty-statement
6647 elif enabled armcc; then
6648     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6649     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6650     # 2523: use of inline assembly is deprecated
6651     add_cflags -W${armcc_opt},--diag_suppress=2523
6652     add_cflags -W${armcc_opt},--diag_suppress=1207
6653     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6654     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6655     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6656     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6657 elif enabled pathscale; then
6658     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6659     disable inline_asm
6660 elif enabled_any msvc icl; then
6661     enabled x86_32 && disable aligned_stack
6662     enabled_all x86_32 debug && add_cflags -Oy-
6663     enabled debug && add_ldflags -debug
6664     enable pragma_deprecated
6665     if enabled icl; then
6666         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6667         # (correctly) on icl 13.x.
6668         test_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6669             add_cflags -Qansi-alias
6670         # Some inline asm is not compilable in debug
6671         if enabled debug; then
6672             disable ebp_available
6673             disable ebx_available
6674         fi
6675     fi
6676     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6677     check_cpp_condition log2 crtversion.h "_VC_CRT_MAJOR_VERSION >= 12"
6678     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6679     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6680     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6681     # MSVC 2013 and newer can handle it fine.
6682     # If this declspec fails, force including stdlib.h before the restrict redefinition
6683     # happens in config.h.
6684     if [ $restrict_keyword != restrict ]; then
6685         test_cc <<EOF || add_cflags -FIstdlib.h
6686 __declspec($restrict_keyword) void *foo(int);
6687 EOF
6688     fi
6689     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6690     # Issue has been fixed in MSVC v19.00.24218.
6691     test_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6692         check_cflags -d2SSAOptimizer-
6693     # enable utf-8 source processing on VS2015 U2 and newer
6694     test_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6695         add_cflags -utf-8
6696 fi
6697
6698 for pfx in "" host_; do
6699     varname=${pfx%_}cc_type
6700     eval "type=\$$varname"
6701     if [ "$type" = "msvc" ]; then
6702         test_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6703 static inline int foo(int a) { return a; }
6704 EOF
6705     fi
6706 done
6707
6708 case $as_type in
6709     clang)
6710         add_asflags -Qunused-arguments
6711     ;;
6712 esac
6713
6714 case $ld_type in
6715     clang)
6716         check_ldflags -Qunused-arguments
6717     ;;
6718 esac
6719
6720 enable frame_thread_encoder
6721
6722 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6723
6724 check_deps $CONFIG_LIST       \
6725            $CONFIG_EXTRA      \
6726            $HAVE_LIST         \
6727            $ALL_COMPONENTS    \
6728
6729 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"
6730 enabled avresample && warn "Building with deprecated library libavresample"
6731
6732 if test $target_os = "haiku"; then
6733     disable memalign
6734     disable posix_memalign
6735 fi
6736
6737 flatten_extralibs(){
6738     unset nested_entries
6739     list_name=$1
6740     eval list=\$${1}
6741     for entry in $list; do
6742         entry_copy=$entry
6743         resolve entry_copy
6744         append nested_entries $(filter '*_extralibs' $entry_copy)
6745         flat_entries=$(filter_out '*_extralibs' $entry_copy)
6746         eval $entry="\$flat_entries"
6747     done
6748     append $list_name "$nested_entries"
6749
6750     resolve nested_entries
6751     if test -n "$(filter '*_extralibs' $nested_entries)"; then
6752         flatten_extralibs $list_name
6753     fi
6754 }
6755
6756 flatten_extralibs_wrapper(){
6757     list_name=$1
6758     flatten_extralibs $list_name
6759     unique $list_name
6760     resolve $list_name
6761     eval $list_name=\$\(\$ldflags_filter \$$list_name\)
6762     eval printf \''%s'\' \""\$$list_name"\"
6763 }
6764
6765 for linkunit in $LIBRARY_LIST; do
6766     unset current_extralibs
6767     eval components=\$$(toupper ${linkunit})_COMPONENTS_LIST
6768     for comp in ${components}; do
6769         enabled $comp || continue
6770         comp_extralibs="${comp}_extralibs"
6771         append current_extralibs $comp_extralibs
6772     done
6773     eval prepend ${linkunit}_extralibs $current_extralibs
6774 done
6775
6776 for linkunit in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
6777     eval ${linkunit}_extralibs=\$\(flatten_extralibs_wrapper ${linkunit}_extralibs\)
6778 done
6779
6780 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6781
6782 for thread in $THREADS_LIST; do
6783     if enabled $thread; then
6784         test -n "$thread_type" &&
6785             die "ERROR: Only one thread type must be selected." ||
6786             thread_type="$thread"
6787     fi
6788 done
6789
6790 if disabled stdatomic; then
6791     if enabled atomics_gcc; then
6792         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
6793     elif enabled atomics_win32; then
6794         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
6795     elif enabled atomics_suncc; then
6796         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
6797     elif enabled pthreads; then
6798         add_compat atomics/pthread/stdatomic.o
6799         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
6800     else
6801         enabled threads && die "Threading is enabled, but no atomics are available"
6802         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
6803     fi
6804 fi
6805
6806 # Check if requested libraries were found.
6807 for lib in $AUTODETECT_LIBS; do
6808     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
6809 done
6810
6811 enabled zlib && add_cppflags -DZLIB_CONST
6812
6813 # conditional library dependencies, in linking order
6814 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6815 enabled afir_filter         && prepend avfilter_deps "avcodec"
6816 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6817 enabled aresample_filter    && prepend avfilter_deps "swresample"
6818 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6819 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6820 enabled convolve_filter     && prepend avfilter_deps "avcodec"
6821 enabled deconvolve_filter   && prepend avfilter_deps "avcodec"
6822 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6823 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6824 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6825 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6826 enabled firequalizer_filter && prepend avfilter_deps "avcodec"
6827 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6828 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6829 enabled pan_filter          && prepend avfilter_deps "swresample"
6830 enabled pp_filter           && prepend avfilter_deps "postproc"
6831 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6832 enabled resample_filter && prepend avfilter_deps "avresample"
6833 enabled sab_filter          && prepend avfilter_deps "swscale"
6834 enabled scale_filter    && prepend avfilter_deps "swscale"
6835 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6836 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6837 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6838 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6839 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6840 enabled signature_filter    && prepend avfilter_deps "avcodec avformat"
6841 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6842 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6843 enabled spp_filter          && prepend avfilter_deps "avcodec"
6844 enabled sr_filter           && prepend avfilter_deps "avformat swscale"
6845 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6846 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6847 enabled zoompan_filter      && prepend avfilter_deps "swscale"
6848
6849 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6850
6851 #FIXME
6852 enabled sdl2_outdev     && add_cflags $(filter_out '-Dmain=SDL_main' $sdl2_cflags)
6853
6854 enabled opus_decoder    && prepend avcodec_deps "swresample"
6855
6856 expand_deps(){
6857     lib_deps=${1}_deps
6858     eval "deps=\$$lib_deps"
6859     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
6860     unique $lib_deps
6861 }
6862
6863 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6864 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6865
6866 map 'expand_deps $v' $LIBRARY_LIST
6867
6868 if test "$quiet" != "yes"; then
6869
6870 echo "install prefix            $prefix"
6871 echo "source path               $source_path"
6872 echo "C compiler                $cc"
6873 echo "C library                 $libc_type"
6874 if test "$host_cc" != "$cc"; then
6875     echo "host C compiler           $host_cc"
6876     echo "host C library            $host_libc_type"
6877 fi
6878 echo "ARCH                      $arch ($cpu)"
6879 if test "$build_suffix" != ""; then
6880     echo "build suffix              $build_suffix"
6881 fi
6882 if test "$progs_suffix" != ""; then
6883     echo "progs suffix              $progs_suffix"
6884 fi
6885 if test "$extra_version" != ""; then
6886     echo "version string suffix     $extra_version"
6887 fi
6888 echo "big-endian                ${bigendian-no}"
6889 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6890 if enabled x86; then
6891     echo "standalone assembly       ${x86asm-no}"
6892     echo "x86 assembler             ${x86asmexe}"
6893     echo "MMX enabled               ${mmx-no}"
6894     echo "MMXEXT enabled            ${mmxext-no}"
6895     echo "3DNow! enabled            ${amd3dnow-no}"
6896     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6897     echo "SSE enabled               ${sse-no}"
6898     echo "SSSE3 enabled             ${ssse3-no}"
6899     echo "AESNI enabled             ${aesni-no}"
6900     echo "AVX enabled               ${avx-no}"
6901     echo "AVX2 enabled              ${avx2-no}"
6902     echo "AVX-512 enabled           ${avx512-no}"
6903     echo "XOP enabled               ${xop-no}"
6904     echo "FMA3 enabled              ${fma3-no}"
6905     echo "FMA4 enabled              ${fma4-no}"
6906     echo "i686 features enabled     ${i686-no}"
6907     echo "CMOV is fast              ${fast_cmov-no}"
6908     echo "EBX available             ${ebx_available-no}"
6909     echo "EBP available             ${ebp_available-no}"
6910 fi
6911 if enabled aarch64; then
6912     echo "NEON enabled              ${neon-no}"
6913     echo "VFP enabled               ${vfp-no}"
6914 fi
6915 if enabled arm; then
6916     echo "ARMv5TE enabled           ${armv5te-no}"
6917     echo "ARMv6 enabled             ${armv6-no}"
6918     echo "ARMv6T2 enabled           ${armv6t2-no}"
6919     echo "VFP enabled               ${vfp-no}"
6920     echo "NEON enabled              ${neon-no}"
6921     echo "THUMB enabled             ${thumb-no}"
6922 fi
6923 if enabled mips; then
6924     echo "MIPS FPU enabled          ${mipsfpu-no}"
6925     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
6926     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
6927     echo "MIPS MSA enabled          ${msa-no}"
6928     echo "LOONGSON MMI enabled      ${mmi-no}"
6929 fi
6930 if enabled ppc; then
6931     echo "AltiVec enabled           ${altivec-no}"
6932     echo "VSX enabled               ${vsx-no}"
6933     echo "POWER8 enabled            ${power8-no}"
6934     echo "PPC 4xx optimizations     ${ppc4xx-no}"
6935     echo "dcbzl available           ${dcbzl-no}"
6936 fi
6937 echo "debug symbols             ${debug-no}"
6938 echo "strip symbols             ${stripping-no}"
6939 echo "optimize for size         ${small-no}"
6940 echo "optimizations             ${optimizations-no}"
6941 echo "static                    ${static-no}"
6942 echo "shared                    ${shared-no}"
6943 echo "postprocessing support    ${postproc-no}"
6944 echo "network support           ${network-no}"
6945 echo "threading support         ${thread_type-no}"
6946 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
6947 echo "texi2html enabled         ${texi2html-no}"
6948 echo "perl enabled              ${perl-no}"
6949 echo "pod2man enabled           ${pod2man-no}"
6950 echo "makeinfo enabled          ${makeinfo-no}"
6951 echo "makeinfo supports HTML    ${makeinfo_html-no}"
6952 test -n "$random_seed" &&
6953     echo "random seed               ${random_seed}"
6954 echo
6955
6956 echo "External libraries:"
6957 print_enabled '' $EXTERNAL_LIBRARY_LIST $EXTERNAL_AUTODETECT_LIBRARY_LIST | print_in_columns
6958 echo
6959
6960 echo "External libraries providing hardware acceleration:"
6961 print_enabled '' $HWACCEL_LIBRARY_LIST $HWACCEL_AUTODETECT_LIBRARY_LIST | print_in_columns
6962 echo
6963
6964 echo "Libraries:"
6965 print_enabled '' $LIBRARY_LIST | print_in_columns
6966 echo
6967
6968 echo "Programs:"
6969 print_enabled '' $PROGRAM_LIST | print_in_columns
6970 echo
6971
6972 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
6973     echo "Enabled ${type}s:"
6974     eval list=\$$(toupper $type)_LIST
6975     print_enabled '_*' $list | print_in_columns
6976     echo
6977 done
6978
6979 if test -n "$ignore_tests"; then
6980     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
6981     echo "Ignored FATE tests:"
6982     echo $ignore_tests | print_in_columns
6983     echo
6984 fi
6985
6986 echo "License: $license"
6987
6988 fi # test "$quiet" != "yes"
6989
6990 if test -n "$WARNINGS"; then
6991     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
6992     enabled fatal_warnings && exit 1
6993 fi
6994
6995 test -e Makefile || echo "include $source_path/Makefile" > Makefile
6996
6997 esc(){
6998     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
6999 }
7000
7001 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" > ffbuild/config.fate
7002
7003 enabled stripping || strip="echo skipping strip"
7004 enabled stripping || striptype=""
7005
7006 config_files="$TMPH ffbuild/config.mak doc/config.texi"
7007
7008 cat > ffbuild/config.mak <<EOF
7009 # Automatically generated by configure - do not modify!
7010 ifndef FFMPEG_CONFIG_MAK
7011 FFMPEG_CONFIG_MAK=1
7012 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
7013 prefix=$prefix
7014 LIBDIR=\$(DESTDIR)$libdir
7015 SHLIBDIR=\$(DESTDIR)$shlibdir
7016 INCDIR=\$(DESTDIR)$incdir
7017 BINDIR=\$(DESTDIR)$bindir
7018 DATADIR=\$(DESTDIR)$datadir
7019 DOCDIR=\$(DESTDIR)$docdir
7020 MANDIR=\$(DESTDIR)$mandir
7021 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
7022 INSTALL_NAME_DIR=$install_name_dir
7023 SRC_PATH=$source_path
7024 SRC_LINK=$source_link
7025 ifndef MAIN_MAKEFILE
7026 SRC_PATH:=\$(SRC_PATH:.%=..%)
7027 endif
7028 CC_IDENT=$cc_ident
7029 ARCH=$arch
7030 INTRINSICS=$intrinsics
7031 EXTERN_PREFIX=$extern_prefix
7032 CC=$cc
7033 CXX=$cxx
7034 AS=$as
7035 OBJCC=$objcc
7036 LD=$ld
7037 DEPCC=$dep_cc
7038 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
7039 DEPAS=$as
7040 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
7041 X86ASM=$x86asmexe
7042 DEPX86ASM=$x86asmexe
7043 DEPX86ASMFLAGS=\$(X86ASMFLAGS)
7044 AR=$ar
7045 ARFLAGS=$arflags
7046 AR_O=$ar_o
7047 AR_CMD=$ar
7048 NM_CMD=$nm
7049 RANLIB=$ranlib
7050 STRIP=$strip
7051 STRIPTYPE=$striptype
7052 NVCC=$nvcc
7053 CP=cp -p
7054 LN_S=$ln_s
7055 CPPFLAGS=$CPPFLAGS
7056 CFLAGS=$CFLAGS
7057 CXXFLAGS=$CXXFLAGS
7058 OBJCFLAGS=$OBJCFLAGS
7059 ASFLAGS=$ASFLAGS
7060 NVCCFLAGS=$nvccflags
7061 AS_C=$AS_C
7062 AS_O=$AS_O
7063 OBJCC_C=$OBJCC_C
7064 OBJCC_E=$OBJCC_E
7065 OBJCC_O=$OBJCC_O
7066 CC_C=$CC_C
7067 CC_E=$CC_E
7068 CC_O=$CC_O
7069 CXX_C=$CXX_C
7070 CXX_O=$CXX_O
7071 NVCC_C=$NVCC_C
7072 NVCC_O=$NVCC_O
7073 LD_O=$LD_O
7074 X86ASM_O=$X86ASM_O
7075 LD_LIB=$LD_LIB
7076 LD_PATH=$LD_PATH
7077 DLLTOOL=$dlltool
7078 WINDRES=$windres
7079 DEPWINDRES=$dep_cc
7080 DOXYGEN=$doxygen
7081 LDFLAGS=$LDFLAGS
7082 LDEXEFLAGS=$LDEXEFLAGS
7083 LDSOFLAGS=$LDSOFLAGS
7084 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
7085 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
7086 X86ASMFLAGS=$X86ASMFLAGS
7087 BUILDSUF=$build_suffix
7088 PROGSSUF=$progs_suffix
7089 FULLNAME=$FULLNAME
7090 LIBPREF=$LIBPREF
7091 LIBSUF=$LIBSUF
7092 LIBNAME=$LIBNAME
7093 SLIBPREF=$SLIBPREF
7094 SLIBSUF=$SLIBSUF
7095 EXESUF=$EXESUF
7096 EXTRA_VERSION=$extra_version
7097 CCDEP=$CCDEP
7098 CXXDEP=$CXXDEP
7099 CCDEP_FLAGS=$CCDEP_FLAGS
7100 ASDEP=$ASDEP
7101 ASDEP_FLAGS=$ASDEP_FLAGS
7102 X86ASMDEP=$X86ASMDEP
7103 X86ASMDEP_FLAGS=$X86ASMDEP_FLAGS
7104 CC_DEPFLAGS=$CC_DEPFLAGS
7105 AS_DEPFLAGS=$AS_DEPFLAGS
7106 X86ASM_DEPFLAGS=$X86ASM_DEPFLAGS
7107 HOSTCC=$host_cc
7108 HOSTLD=$host_ld
7109 HOSTCFLAGS=$host_cflags
7110 HOSTCPPFLAGS=$host_cppflags
7111 HOSTEXESUF=$HOSTEXESUF
7112 HOSTLDFLAGS=$host_ldflags
7113 HOSTEXTRALIBS=$host_extralibs
7114 DEPHOSTCC=$host_cc
7115 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
7116 HOSTCCDEP=$HOSTCCDEP
7117 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
7118 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
7119 HOSTCC_C=$HOSTCC_C
7120 HOSTCC_O=$HOSTCC_O
7121 HOSTLD_O=$HOSTLD_O
7122 TARGET_EXEC=$target_exec $target_exec_args
7123 TARGET_PATH=$target_path
7124 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
7125 CFLAGS-ffplay=${sdl2_cflags}
7126 CFLAGS_HEADERS=$CFLAGS_HEADERS
7127 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
7128 EXTRALIBS=$extralibs
7129 COMPAT_OBJS=$compat_objs
7130 INSTALL=$install
7131 LIBTARGET=${LIBTARGET}
7132 SLIBNAME=${SLIBNAME}
7133 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
7134 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
7135 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
7136 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
7137 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
7138 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
7139 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
7140 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
7141 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
7142 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
7143 NOREDZONE_FLAGS=$noredzone_flags
7144 LIBFUZZER_PATH=$libfuzzer_path
7145 IGNORE_TESTS=$ignore_tests
7146 EOF
7147
7148 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> ffbuild/config.mak' $LIBRARY_LIST
7149
7150 for entry in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
7151     eval echo "EXTRALIBS-${entry}=\$${entry}_extralibs" >> ffbuild/config.mak
7152 done
7153
7154 cat > $TMPH <<EOF
7155 /* Automatically generated by configure - do not modify! */
7156 #ifndef FFMPEG_CONFIG_H
7157 #define FFMPEG_CONFIG_H
7158 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
7159 #define FFMPEG_LICENSE "$(c_escape $license)"
7160 #define CONFIG_THIS_YEAR 2018
7161 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
7162 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
7163 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
7164 #define av_restrict $restrict_keyword
7165 #define EXTERN_PREFIX "${extern_prefix}"
7166 #define EXTERN_ASM ${extern_prefix}
7167 #define BUILDSUF "$build_suffix"
7168 #define SLIBSUF "$SLIBSUF"
7169 #define HAVE_MMX2 HAVE_MMXEXT
7170 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
7171 EOF
7172
7173 test -n "$assert_level" &&
7174     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
7175
7176 test -n "$malloc_prefix" &&
7177     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
7178
7179 if enabled x86asm; then
7180     append config_files $TMPASM
7181     cat > $TMPASM <<EOF
7182 ; Automatically generated by configure - do not modify!
7183 EOF
7184 fi
7185
7186 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
7187
7188
7189 mkdir -p doc
7190 mkdir -p tests
7191 mkdir -p tests/api
7192 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
7193
7194 print_config ARCH_   "$config_files" $ARCH_LIST
7195 print_config HAVE_   "$config_files" $HAVE_LIST
7196 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
7197                                      $CONFIG_EXTRA      \
7198                                      $ALL_COMPONENTS    \
7199
7200 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
7201 echo "endif # FFMPEG_CONFIG_MAK" >> ffbuild/config.mak
7202
7203 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
7204 cp_if_changed $TMPH config.h
7205 touch ffbuild/.config
7206
7207 enabled x86asm && cp_if_changed $TMPASM config.asm
7208
7209 cat > $TMPH <<EOF
7210 /* Generated by ffmpeg configure */
7211 #ifndef AVUTIL_AVCONFIG_H
7212 #define AVUTIL_AVCONFIG_H
7213 EOF
7214
7215 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
7216
7217 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
7218
7219 cp_if_changed $TMPH libavutil/avconfig.h
7220
7221 full_filter_name(){
7222     sed -n "s/^extern AVFilter ff_\([avfsinkrc]\{2,5\}\)_$1;/\1_$1/p" $source_path/libavfilter/allfilters.c
7223 }
7224
7225 # generate the lists of enabled components
7226 print_enabled_components(){
7227     file=$1
7228     struct_name=$2
7229     name=$3
7230     shift 3
7231     echo "static const $struct_name * const $name[] = {" > $TMPH
7232     for c in $*; do
7233         if enabled $c; then
7234             case $name in
7235                 filter_list)
7236                     c=$(full_filter_name $(remove_suffix _filter $c))
7237                 ;;
7238                 indev_list)
7239                     c=$(add_suffix _demuxer $(remove_suffix _indev $c))
7240                 ;;
7241                 outdev_list)
7242                     c=$(add_suffix _muxer $(remove_suffix _outdev $c))
7243                 ;;
7244             esac
7245             printf "    &ff_%s,\n" $c >> $TMPH
7246         fi
7247     done
7248     if [ "$name" = "filter_list" ]; then
7249         for c in asrc_abuffer vsrc_buffer asink_abuffer vsink_buffer; do
7250             printf "    &ff_%s,\n" $c >> $TMPH
7251         done
7252     fi
7253     echo "    NULL };" >> $TMPH
7254     cp_if_changed $TMPH $file
7255 }
7256
7257 print_enabled_components libavfilter/filter_list.c AVFilter filter_list $FILTER_LIST
7258 print_enabled_components libavcodec/codec_list.c AVCodec codec_list $CODEC_LIST
7259 print_enabled_components libavcodec/parser_list.c AVCodecParser parser_list $PARSER_LIST
7260 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
7261 print_enabled_components libavformat/demuxer_list.c AVInputFormat demuxer_list $DEMUXER_LIST
7262 print_enabled_components libavformat/muxer_list.c AVOutputFormat muxer_list $MUXER_LIST
7263 print_enabled_components libavdevice/indev_list.c AVInputFormat indev_list $INDEV_LIST
7264 print_enabled_components libavdevice/outdev_list.c AVOutputFormat outdev_list $OUTDEV_LIST
7265 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
7266
7267 # Settings for pkg-config files
7268
7269 cat > $TMPH <<EOF
7270 # Automatically generated by configure - do not modify!
7271 shared=$shared
7272 build_suffix=$build_suffix
7273 prefix=$prefix
7274 libdir=$libdir
7275 incdir=$incdir
7276 rpath=$(enabled rpath && echo "-Wl,-rpath,\${libdir}")
7277 source_path=${source_path}
7278 LIBPREF=${LIBPREF}
7279 LIBSUF=${LIBSUF}
7280 extralibs_avutil="$avutil_extralibs"
7281 extralibs_avcodec="$avcodec_extralibs"
7282 extralibs_avformat="$avformat_extralibs"
7283 extralibs_avdevice="$avdevice_extralibs"
7284 extralibs_avfilter="$avfilter_extralibs"
7285 extralibs_avresample="$avresample_extralibs"
7286 extralibs_postproc="$postproc_extralibs"
7287 extralibs_swscale="$swscale_extralibs"
7288 extralibs_swresample="$swresample_extralibs"
7289 EOF
7290
7291 for lib in $LIBRARY_LIST; do
7292     lib_deps="$(eval echo \$${lib}_deps)"
7293     echo ${lib}_deps=\"$lib_deps\" >> $TMPH
7294 done
7295
7296 cp_if_changed $TMPH ffbuild/config.sh