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-libklvanc       enable Kernel Labs VANC processing [no]
 243   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
 244   --enable-liblensfun      enable lensfun lens correction [no]
 245   --enable-libmodplug      enable ModPlug via libmodplug [no]
 246   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 247   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 248   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 249   --enable-libopencv       enable video filtering via libopencv [no]
 250   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
 251   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 252   --enable-libopenmpt      enable decoding tracked files via libopenmpt [no]
 253   --enable-libopus         enable Opus de/encoding via libopus [no]
 254   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 255   --enable-librsvg         enable SVG rasterization via librsvg [no]
 256   --enable-librubberband   enable rubberband needed for rubberband filter [no]
 257   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 258   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 259   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
 260   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
 261   --enable-libsoxr         enable Include libsoxr resampling [no]
 262   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 263   --enable-libsrt          enable Haivision SRT protocol via libsrt [no]
 264   --enable-libssh          enable SFTP protocol via libssh [no]
 265   --enable-libtensorflow   enable TensorFlow as a DNN module backend
 266                            for DNN based filters like sr [no]
 267   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
 268   --enable-libtheora       enable Theora encoding via libtheora [no]
 269   --enable-libtls          enable LibreSSL (via libtls), needed for https support
 270                            if openssl, gnutls or mbedtls is not used [no]
 271   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 272   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 273   --enable-libvidstab      enable video stabilization using vid.stab [no]
 274   --enable-libvmaf         enable vmaf filter via libvmaf [no]
 275   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 276   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 277                            native implementation exists [no]
 278   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 279   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 280   --enable-libwebp         enable WebP encoding via libwebp [no]
 281   --enable-libx264         enable H.264 encoding via x264 [no]
 282   --enable-libx265         enable HEVC encoding via x265 [no]
 283   --enable-libxavs         enable AVS encoding via xavs [no]
 284   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
 285   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
 286   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
 287   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
 288   --enable-libxvid         enable Xvid encoding via xvidcore,
 289                            native MPEG-4/Xvid encoder exists [no]
 290   --enable-libxml2         enable XML parsing using the C library libxml2, needed
 291                            for dash demuxing support [no]
 292   --enable-libzimg         enable z.lib, needed for zscale filter [no]
 293   --enable-libzmq          enable message passing via libzmq [no]
 294   --enable-libzvbi         enable teletext support via libzvbi [no]
 295   --enable-lv2             enable LV2 audio filtering [no]
 296   --disable-lzma           disable lzma [autodetect]
 297   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
 298   --enable-libndi_newtek   enable Newteck NDI I/O support [no]
 299   --enable-mbedtls         enable mbedTLS, needed for https support
 300                            if openssl, gnutls or libtls is not used [no]
 301   --enable-mediacodec      enable Android MediaCodec support [no]
 302   --enable-libmysofa       enable libmysofa, needed for sofalizer filter [no]
 303   --enable-openal          enable OpenAL 1.1 capture support [no]
 304   --enable-opencl          enable OpenCL processing [no]
 305   --enable-opengl          enable OpenGL rendering [no]
 306   --enable-openssl         enable openssl, needed for https support
 307                            if gnutls, libtls or mbedtls is not used [no]
 308   --disable-sndio          disable sndio support [autodetect]
 309   --disable-schannel       disable SChannel SSP, needed for TLS support on
 310                            Windows if openssl and gnutls are not used [autodetect]
 311   --disable-sdl2           disable sdl2 [autodetect]
 312   --disable-securetransport disable Secure Transport, needed for TLS support
 313                            on OSX if openssl and gnutls are not used [autodetect]
 314   --enable-vapoursynth     enable VapourSynth demuxer [no]
 315   --disable-xlib           disable xlib [autodetect]
 316   --disable-zlib           disable zlib [autodetect]
 317
 318   The following libraries provide various hardware acceleration features:
 319   --disable-amf            disable AMF video encoding code [autodetect]
 320   --disable-audiotoolbox   disable Apple AudioToolbox code [autodetect]
 321   --enable-cuda-sdk        enable CUDA features that require the CUDA SDK [no]
 322   --disable-cuvid          disable Nvidia CUVID support [autodetect]
 323   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
 324   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
 325   --disable-ffnvcodec      disable dynamically linked Nvidia code [autodetect]
 326   --enable-libdrm          enable DRM code (Linux) [no]
 327   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
 328   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
 329   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
 330   --disable-nvdec          disable Nvidia video decoding acceleration (via hwaccel) [autodetect]
 331   --disable-nvenc          disable Nvidia video encoding code [autodetect]
 332   --enable-omx             enable OpenMAX IL code [no]
 333   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
 334   --enable-rkmpp           enable Rockchip Media Process Platform code [no]
 335   --disable-v4l2-m2m       disable V4L2 mem2mem code [autodetect]
 336   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
 337   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
 338   --disable-videotoolbox   disable VideoToolbox code [autodetect]
 339
 340 Toolchain options:
 341   --arch=ARCH              select architecture [$arch]
 342   --cpu=CPU                select the minimum required CPU (affects
 343                            instruction selection, may crash on older CPUs)
 344   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 345   --progs-suffix=SUFFIX    program name suffix []
 346   --enable-cross-compile   assume a cross-compiler is used
 347   --sysroot=PATH           root of cross-build tree
 348   --sysinclude=PATH        location of cross-build system headers
 349   --target-os=OS           compiler targets OS [$target_os]
 350   --target-exec=CMD        command to run executables on target
 351   --target-path=DIR        path to view of build directory on target
 352   --target-samples=DIR     path to samples directory on target
 353   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 354   --toolchain=NAME         set tool defaults according to NAME
 355                            (gcc-asan, clang-asan, gcc-msan, clang-msan,
 356                            gcc-tsan, clang-tsan, gcc-usan, clang-usan,
 357                            valgrind-massif, valgrind-memcheck,
 358                            msvc, icl, gcov, llvm-cov, hardened)
 359   --nm=NM                  use nm tool NM [$nm_default]
 360   --ar=AR                  use archive tool AR [$ar_default]
 361   --as=AS                  use assembler AS [$as_default]
 362   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
 363   --strip=STRIP            use strip tool STRIP [$strip_default]
 364   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 365   --x86asmexe=EXE          use nasm-compatible assembler EXE [$x86asmexe_default]
 366   --cc=CC                  use C compiler CC [$cc_default]
 367   --cxx=CXX                use C compiler CXX [$cxx_default]
 368   --objcc=OCC              use ObjC compiler OCC [$cc_default]
 369   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 370   --nvcc=NVCC              use Nvidia CUDA compiler NVCC [$nvcc_default]
 371   --ld=LD                  use linker LD [$ld_default]
 372   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 373   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 374   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 375   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
 376   --host-cc=HOSTCC         use host C compiler HOSTCC
 377   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 378   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 379   --host-ld=HOSTLD         use host linker HOSTLD
 380   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 381   --host-libs=HLIBS        use libs HLIBS when linking for host
 382   --host-os=OS             compiler host OS [$target_os]
 383   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 384   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 385   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
 386   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 387   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 388   --extra-ldsoflags=ELDFLAGS add ELDFLAGS to LDSOFLAGS [$LDSOFLAGS]
 389   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 390   --extra-version=STRING   version string suffix []
 391   --optflags=OPTFLAGS      override optimization-related compiler flags
 392   --nvccflags=NVCCFLAGS    override nvcc flags [$nvccflags_default]
 393   --build-suffix=SUFFIX    library name suffix []
 394   --enable-pic             build position-independent code
 395   --enable-thumb           compile for Thumb instruction set
 396   --enable-lto             use link-time optimization
 397   --env="ENV=override"     override the environment variables
 398
 399 Advanced options (experts only):
 400   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 401   --custom-allocator=NAME  use a supported custom allocator
 402   --disable-symver         disable symbol versioning
 403   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 404   --disable-safe-bitstream-reader
 405                            disable buffer boundary checking in bitreaders
 406                            (faster, but may crash)
 407   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
 408
 409 Optimization options (experts only):
 410   --disable-asm            disable all assembly optimizations
 411   --disable-altivec        disable AltiVec optimizations
 412   --disable-vsx            disable VSX optimizations
 413   --disable-power8         disable POWER8 optimizations
 414   --disable-amd3dnow       disable 3DNow! optimizations
 415   --disable-amd3dnowext    disable 3DNow! extended optimizations
 416   --disable-mmx            disable MMX optimizations
 417   --disable-mmxext         disable MMXEXT optimizations
 418   --disable-sse            disable SSE optimizations
 419   --disable-sse2           disable SSE2 optimizations
 420   --disable-sse3           disable SSE3 optimizations
 421   --disable-ssse3          disable SSSE3 optimizations
 422   --disable-sse4           disable SSE4 optimizations
 423   --disable-sse42          disable SSE4.2 optimizations
 424   --disable-avx            disable AVX optimizations
 425   --disable-xop            disable XOP optimizations
 426   --disable-fma3           disable FMA3 optimizations
 427   --disable-fma4           disable FMA4 optimizations
 428   --disable-avx2           disable AVX2 optimizations
 429   --disable-avx512         disable AVX-512 optimizations
 430   --disable-aesni          disable AESNI optimizations
 431   --disable-armv5te        disable armv5te optimizations
 432   --disable-armv6          disable armv6 optimizations
 433   --disable-armv6t2        disable armv6t2 optimizations
 434   --disable-vfp            disable VFP optimizations
 435   --disable-neon           disable NEON optimizations
 436   --disable-inline-asm     disable use of inline assembly
 437   --disable-x86asm         disable use of standalone x86 assembly
 438   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
 439   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 440   --disable-msa            disable MSA optimizations
 441   --disable-mipsfpu        disable floating point MIPS optimizations
 442   --disable-mmi            disable Loongson SIMD optimizations
 443   --disable-fast-unaligned consider unaligned accesses slow
 444
 445 Developer options (useful when working on FFmpeg itself):
 446   --disable-debug          disable debugging symbols
 447   --enable-debug=LEVEL     set the debug level [$debuglevel]
 448   --disable-optimizations  disable compiler optimizations
 449   --enable-extra-warnings  enable more compiler warnings
 450   --disable-stripping      disable stripping of executables and shared libraries
 451   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 452                            2 causes a slowdown at runtime.
 453   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 454   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 455                            leaks and errors, using the specified valgrind binary.
 456                            Cannot be combined with --target-exec
 457   --enable-ftrapv          Trap arithmetic overflows
 458   --samples=PATH           location of test samples for FATE, if not set use
 459                            \$FATE_SAMPLES at make invocation time.
 460   --enable-neon-clobber-test check NEON registers for clobbering (should be
 461                            used only for debugging purposes)
 462   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 463                            should be used only for debugging purposes)
 464   --enable-random          randomly enable/disable components
 465   --disable-random
 466   --enable-random=LIST     randomly enable/disable specific components or
 467   --disable-random=LIST    component groups. LIST is a comma-separated list
 468                            of NAME[:PROB] entries where NAME is a component
 469                            (group) and PROB the probability associated with
 470                            NAME (default 0.5).
 471   --random-seed=VALUE      seed value for --enable/disable-random
 472   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 473                            (only applies to --disable-optimizations builds)
 474   --enable-osfuzz          Enable building fuzzer tool
 475   --libfuzzer=PATH         path to libfuzzer
 476   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
 477                            in the name) of tests whose result is ignored
 478   --enable-linux-perf      enable Linux Performance Monitor API
 479
 480 NOTE: Object files are built at the place where configure is launched.
 481 EOF
 482   exit 0
 483 }
 484
 485 if test -t 1 && which tput >/dev/null 2>&1; then
 486     ncolors=$(tput colors)
 487     if test -n "$ncolors" && test $ncolors -ge 8; then
 488         bold_color=$(tput bold)
 489         warn_color=$(tput setaf 3)
 490         error_color=$(tput setaf 1)
 491         reset_color=$(tput sgr0)
 492     fi
 493     # 72 used instead of 80 since that's the default of pr
 494     ncols=$(tput cols)
 495 fi
 496 : ${ncols:=72}
 497
 498 log(){
 499     echo "$@" >> $logfile
 500 }
 501
 502 log_file(){
 503     log BEGIN $1
 504     pr -n -t $1 >> $logfile
 505     log END $1
 506 }
 507
 508 warn(){
 509     log "WARNING: $*"
 510     WARNINGS="${WARNINGS}WARNING: $*\n"
 511 }
 512
 513 die(){
 514     log "$@"
 515     echo "$error_color$bold_color$@$reset_color"
 516     cat <<EOF
 517
 518 If you think configure made a mistake, make sure you are using the latest
 519 version from Git.  If the latest version fails, report the problem to the
 520 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 521 EOF
 522     if disabled logging; then
 523         cat <<EOF
 524 Rerun configure with logging enabled (do not use --disable-logging), and
 525 include the log this produces with your report.
 526 EOF
 527     else
 528         cat <<EOF
 529 Include the log file "$logfile" produced by configure as this will help
 530 solve the problem.
 531 EOF
 532     fi
 533     exit 1
 534 }
 535
 536 # Avoid locale weirdness, besides we really just want to translate ASCII.
 537 toupper(){
 538     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 539 }
 540
 541 tolower(){
 542     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 543 }
 544
 545 c_escape(){
 546     echo "$*" | sed 's/["\\]/\\\0/g'
 547 }
 548
 549 sh_quote(){
 550     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 551     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 552     echo "$v"
 553 }
 554
 555 cleanws(){
 556     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
 557 }
 558
 559 filter(){
 560     pat=$1
 561     shift
 562     for v; do
 563         eval "case '$v' in $pat) printf '%s ' '$v' ;; esac"
 564     done
 565 }
 566
 567 filter_out(){
 568     pat=$1
 569     shift
 570     for v; do
 571         eval "case '$v' in $pat) ;; *) printf '%s ' '$v' ;; esac"
 572     done
 573 }
 574
 575 map(){
 576     m=$1
 577     shift
 578     for v; do eval $m; done
 579 }
 580
 581 add_suffix(){
 582     suffix=$1
 583     shift
 584     for v; do echo ${v}${suffix}; done
 585 }
 586
 587 remove_suffix(){
 588     suffix=$1
 589     shift
 590     for v; do echo ${v%$suffix}; done
 591 }
 592
 593 set_all(){
 594     value=$1
 595     shift
 596     for var in $*; do
 597         eval $var=$value
 598     done
 599 }
 600
 601 set_weak(){
 602     value=$1
 603     shift
 604     for var; do
 605         eval : \${$var:=$value}
 606     done
 607 }
 608
 609 sanitize_var_name(){
 610     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 611 }
 612
 613 set_sanitized(){
 614     var=$1
 615     shift
 616     eval $(sanitize_var_name "$var")='$*'
 617 }
 618
 619 get_sanitized(){
 620     eval echo \$$(sanitize_var_name "$1")
 621 }
 622
 623 pushvar(){
 624     for pvar in $*; do
 625         eval level=\${${pvar}_level:=0}
 626         eval ${pvar}_${level}="\$$pvar"
 627         eval ${pvar}_level=$(($level+1))
 628     done
 629 }
 630
 631 popvar(){
 632     for pvar in $*; do
 633         eval level=\${${pvar}_level:-0}
 634         test $level = 0 && continue
 635         eval level=$(($level-1))
 636         eval $pvar="\${${pvar}_${level}}"
 637         eval ${pvar}_level=$level
 638         eval unset ${pvar}_${level}
 639     done
 640 }
 641
 642 request(){
 643     for var in $*; do
 644         eval ${var}_requested=yes
 645         eval $var=
 646     done
 647 }
 648
 649 enable(){
 650     set_all yes $*
 651 }
 652
 653 disable(){
 654     set_all no $*
 655 }
 656
 657 enable_weak(){
 658     set_weak yes $*
 659 }
 660
 661 disable_weak(){
 662     set_weak no $*
 663 }
 664
 665 enable_sanitized(){
 666     for var; do
 667         enable $(sanitize_var_name $var)
 668     done
 669 }
 670
 671 disable_sanitized(){
 672     for var; do
 673         disable $(sanitize_var_name $var)
 674     done
 675 }
 676
 677 do_enable_deep(){
 678     for var; do
 679         enabled $var && continue
 680         set -- $var
 681         eval enable_deep \$${var}_select
 682         var=$1
 683         eval enable_deep_weak \$${var}_suggest
 684     done
 685 }
 686
 687 enable_deep(){
 688     do_enable_deep $*
 689     enable $*
 690 }
 691
 692 enable_deep_weak(){
 693     for var; do
 694         disabled $var && continue
 695         set -- $var
 696         do_enable_deep $var
 697         var=$1
 698         enable_weak $var
 699     done
 700 }
 701
 702 requested(){
 703     test "${1#!}" = "$1" && op="=" || op="!="
 704     eval test "x\$${1#!}_requested" $op "xyes"
 705 }
 706
 707 enabled(){
 708     test "${1#!}" = "$1" && op="=" || op="!="
 709     eval test "x\$${1#!}" $op "xyes"
 710 }
 711
 712 disabled(){
 713     test "${1#!}" = "$1" && op="=" || op="!="
 714     eval test "x\$${1#!}" $op "xno"
 715 }
 716
 717 enabled_all(){
 718     for opt; do
 719         enabled $opt || return 1
 720     done
 721 }
 722
 723 disabled_all(){
 724     for opt; do
 725         disabled $opt || return 1
 726     done
 727 }
 728
 729 enabled_any(){
 730     for opt; do
 731         enabled $opt && return 0
 732     done
 733 }
 734
 735 disabled_any(){
 736     for opt; do
 737         disabled $opt && return 0
 738     done
 739     return 1
 740 }
 741
 742 set_default(){
 743     for opt; do
 744         eval : \${$opt:=\$${opt}_default}
 745     done
 746 }
 747
 748 is_in(){
 749     value=$1
 750     shift
 751     for var in $*; do
 752         [ $var = $value ] && return 0
 753     done
 754     return 1
 755 }
 756
 757 # The cfg loop is very hot (several thousands iterations), and in bash also
 758 # potentialy quite slow. Try to abort the iterations early, preferably without
 759 # calling functions. 70%+ of the time cfg is already done or without deps.
 760 check_deps(){
 761     for cfg; do
 762         eval [ x\$${cfg}_checking = xdone ] && continue
 763         eval [ x\$${cfg}_checking = xinprogress ] && die "Circular dependency for $cfg."
 764
 765         eval "
 766         dep_all=\$${cfg}_deps
 767         dep_any=\$${cfg}_deps_any
 768         dep_con=\$${cfg}_conflict
 769         dep_sel=\$${cfg}_select
 770         dep_sgs=\$${cfg}_suggest
 771         dep_ifa=\$${cfg}_if
 772         dep_ifn=\$${cfg}_if_any
 773         "
 774
 775         # most of the time here $cfg has no deps - avoid costly no-op work
 776         if [ "$dep_all$dep_any$dep_con$dep_sel$dep_sgs$dep_ifa$dep_ifn" ]; then
 777             eval ${cfg}_checking=inprogress
 778
 779             set -- $cfg "$dep_all" "$dep_any" "$dep_con" "$dep_sel" "$dep_sgs" "$dep_ifa" "$dep_ifn"
 780             check_deps $dep_all $dep_any $dep_con $dep_sel $dep_sgs $dep_ifa $dep_ifn
 781             cfg=$1; dep_all=$2; dep_any=$3; dep_con=$4; dep_sel=$5 dep_sgs=$6; dep_ifa=$7; dep_ifn=$8
 782
 783             [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 784             [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 785             enabled_all  $dep_all || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not all dependencies are satisfied: $dep_all"; }
 786             enabled_any  $dep_any || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not any dependency is satisfied: $dep_any"; }
 787             disabled_all $dep_con || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some conflicting dependencies are unsatisfied: $dep_con"; }
 788             disabled_any $dep_sel && { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some selected dependency is unsatisfied: $dep_sel"; }
 789
 790             enabled $cfg && enable_deep_weak $dep_sel $dep_sgs
 791
 792             for dep in $dep_all $dep_any $dep_sel $dep_sgs; do
 793                 # filter out library deps, these do not belong in extralibs
 794                 is_in $dep $LIBRARY_LIST && continue
 795                 enabled $dep && eval append ${cfg}_extralibs ${dep}_extralibs
 796             done
 797         fi
 798
 799         eval ${cfg}_checking=done
 800     done
 801 }
 802
 803 print_config(){
 804     pfx=$1
 805     files=$2
 806     shift 2
 807     map 'eval echo "$v \${$v:-no}"' "$@" |
 808     awk "BEGIN { split(\"$files\", files) }
 809         {
 810             c = \"$pfx\" toupper(\$1);
 811             v = \$2;
 812             sub(/yes/, 1, v);
 813             sub(/no/,  0, v);
 814             for (f in files) {
 815                 file = files[f];
 816                 if (file ~ /\\.h\$/) {
 817                     printf(\"#define %s %d\\n\", c, v) >>file;
 818                 } else if (file ~ /\\.asm\$/) {
 819                     printf(\"%%define %s %d\\n\", c, v) >>file;
 820                 } else if (file ~ /\\.mak\$/) {
 821                     n = -v ? \"\" : \"!\";
 822                     printf(\"%s%s=yes\\n\", n, c) >>file;
 823                 } else if (file ~ /\\.texi\$/) {
 824                     pre = -v ? \"\" : \"@c \";
 825                     yesno = \$2;
 826                     c2 = tolower(c);
 827                     gsub(/_/, \"-\", c2);
 828                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 829                 }
 830             }
 831         }"
 832 }
 833
 834 print_enabled(){
 835     suf=$1
 836     shift
 837     for v; do
 838         enabled $v && printf "%s\n" ${v%$suf}
 839     done
 840 }
 841
 842 append(){
 843     var=$1
 844     shift
 845     eval "$var=\"\$$var $*\""
 846 }
 847
 848 prepend(){
 849     var=$1
 850     shift
 851     eval "$var=\"$* \$$var\""
 852 }
 853
 854 reverse () {
 855     eval '
 856         reverse_out=
 857         for v in $'$1'; do
 858             reverse_out="$v $reverse_out"
 859         done
 860         '$1'=$reverse_out
 861     '
 862 }
 863
 864 # keeps the last occurence of each non-unique item
 865 unique(){
 866     unique_out=
 867     eval unique_in=\$$1
 868     reverse unique_in
 869     for v in $unique_in; do
 870         # " $unique_out" +space such that every item is surrounded with spaces
 871         case " $unique_out" in *" $v "*) continue; esac  # already in list
 872         unique_out="$unique_out$v "
 873     done
 874     reverse unique_out
 875     eval $1=\$unique_out
 876 }
 877
 878 resolve(){
 879     resolve_out=
 880     eval resolve_in=\$$1
 881     for v in $resolve_in; do
 882         eval 'resolve_out="$resolve_out$'$v' "'
 883     done
 884     eval $1=\$resolve_out
 885 }
 886
 887 add_cppflags(){
 888     append CPPFLAGS "$@"
 889 }
 890
 891 add_cflags(){
 892     append CFLAGS $($cflags_filter "$@")
 893 }
 894
 895 add_cflags_headers(){
 896     append CFLAGS_HEADERS $($cflags_filter "$@")
 897 }
 898
 899 add_cxxflags(){
 900     append CXXFLAGS $($cflags_filter "$@")
 901 }
 902
 903 add_objcflags(){
 904     append OBJCFLAGS $($objcflags_filter "$@")
 905 }
 906
 907 add_asflags(){
 908     append ASFLAGS $($asflags_filter "$@")
 909 }
 910
 911 add_ldflags(){
 912     append LDFLAGS $($ldflags_filter "$@")
 913 }
 914
 915 add_ldexeflags(){
 916     append LDEXEFLAGS $($ldflags_filter "$@")
 917 }
 918
 919 add_ldsoflags(){
 920     append LDSOFLAGS $($ldflags_filter "$@")
 921 }
 922
 923 add_extralibs(){
 924     prepend extralibs $($ldflags_filter "$@")
 925 }
 926
 927 add_stripflags(){
 928     append ASMSTRIPFLAGS "$@"
 929 }
 930
 931 add_host_cppflags(){
 932     append host_cppflags "$@"
 933 }
 934
 935 add_host_cflags(){
 936     append host_cflags $($host_cflags_filter "$@")
 937 }
 938
 939 add_host_ldflags(){
 940     append host_ldflags $($host_ldflags_filter "$@")
 941 }
 942
 943 add_compat(){
 944     append compat_objs $1
 945     shift
 946     map 'add_cppflags -D$v' "$@"
 947 }
 948
 949 test_cmd(){
 950     log "$@"
 951     "$@" >> $logfile 2>&1
 952 }
 953
 954 test_stat(){
 955     log test_stat "$@"
 956     stat "$1" >> $logfile 2>&1
 957 }
 958
 959 cc_e(){
 960     eval printf '%s\\n' $CC_E
 961 }
 962
 963 cc_o(){
 964     eval printf '%s\\n' $CC_O
 965 }
 966
 967 as_o(){
 968     eval printf '%s\\n' $AS_O
 969 }
 970
 971 x86asm_o(){
 972     eval printf '%s\\n' $X86ASM_O
 973 }
 974
 975 ld_o(){
 976     eval printf '%s\\n' $LD_O
 977 }
 978
 979 hostcc_e(){
 980     eval printf '%s\\n' $HOSTCC_E
 981 }
 982
 983 hostcc_o(){
 984     eval printf '%s\\n' $HOSTCC_O
 985 }
 986
 987 test_cc(){
 988     log test_cc "$@"
 989     cat > $TMPC
 990     log_file $TMPC
 991     test_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 992 }
 993
 994 test_cxx(){
 995     log test_cxx "$@"
 996     cat > $TMPCPP
 997     log_file $TMPCPP
 998     test_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
 999 }
1000
1001 test_objcc(){
1002     log test_objcc "$@"
1003     cat > $TMPM
1004     log_file $TMPM
1005     test_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
1006 }
1007
1008 test_cpp(){
1009     log test_cpp "$@"
1010     cat > $TMPC
1011     log_file $TMPC
1012     test_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
1013 }
1014
1015 test_as(){
1016     log test_as "$@"
1017     cat > $TMPS
1018     log_file $TMPS
1019     test_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
1020 }
1021
1022 test_x86asm(){
1023     log test_x86asm "$@"
1024     echo "$1" > $TMPASM
1025     log_file $TMPASM
1026     shift
1027     test_cmd $x86asmexe $X86ASMFLAGS -Werror "$@" $(x86asm_o $TMPO) $TMPASM
1028 }
1029
1030 check_cmd(){
1031     log check_cmd "$@"
1032     cmd=$1
1033     disabled $cmd && return
1034     disable $cmd
1035     test_cmd $@ && enable $cmd
1036 }
1037
1038 check_as(){
1039     log check_as "$@"
1040     name=$1
1041     code=$2
1042     shift 2
1043     disable $name
1044     test_as $@ <<EOF && enable $name
1045 $code
1046 EOF
1047 }
1048
1049 check_inline_asm(){
1050     log check_inline_asm "$@"
1051     name="$1"
1052     code="$2"
1053     shift 2
1054     disable $name
1055     test_cc "$@" <<EOF && enable $name
1056 void foo(void){ __asm__ volatile($code); }
1057 EOF
1058 }
1059
1060 check_inline_asm_flags(){
1061     log check_inline_asm_flags "$@"
1062     name="$1"
1063     code="$2"
1064     flags=''
1065     shift 2
1066     while [ "$1" != "" ]; do
1067       append flags $1
1068       shift
1069     done;
1070     disable $name
1071     cat > $TMPC <<EOF
1072 void foo(void){ __asm__ volatile($code); }
1073 EOF
1074     log_file $TMPC
1075     test_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
1076     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
1077 }
1078
1079 check_insn(){
1080     log check_insn "$@"
1081     check_inline_asm ${1}_inline "\"$2\""
1082     check_as ${1}_external "$2"
1083 }
1084
1085 check_x86asm(){
1086     log check_x86asm "$@"
1087     name=$1
1088     shift
1089     disable $name
1090     test_x86asm "$@" && enable $name
1091 }
1092
1093 test_ld(){
1094     log test_ld "$@"
1095     type=$1
1096     shift 1
1097     flags=$(filter_out '-l*|*.so' $@)
1098     libs=$(filter '-l*|*.so' $@)
1099     test_$type $($cflags_filter $flags) || return
1100     flags=$($ldflags_filter $flags)
1101     libs=$($ldflags_filter $libs)
1102     test_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
1103 }
1104
1105 check_ld(){
1106     log check_ld "$@"
1107     type=$1
1108     name=$2
1109     shift 2
1110     disable $name
1111     test_ld $type $@ && enable $name
1112 }
1113
1114 print_include(){
1115     hdr=$1
1116     test "${hdr%.h}" = "${hdr}" &&
1117         echo "#include $hdr"    ||
1118         echo "#include <$hdr>"
1119 }
1120
1121 test_code(){
1122     log test_code "$@"
1123     check=$1
1124     headers=$2
1125     code=$3
1126     shift 3
1127     {
1128         for hdr in $headers; do
1129             print_include $hdr
1130         done
1131         echo "int main(void) { $code; return 0; }"
1132     } | test_$check "$@"
1133 }
1134
1135 check_cppflags(){
1136     log check_cppflags "$@"
1137     test_cpp "$@" <<EOF && append CPPFLAGS "$@"
1138 #include <stdlib.h>
1139 EOF
1140 }
1141
1142 test_cflags(){
1143     log test_cflags "$@"
1144     set -- $($cflags_filter "$@")
1145     test_cc "$@" <<EOF
1146 int x;
1147 EOF
1148 }
1149
1150 check_cflags(){
1151     log check_cflags "$@"
1152     test_cflags "$@" && add_cflags "$@"
1153 }
1154
1155 check_cxxflags(){
1156     log check_cxxflags "$@"
1157     set -- $($cflags_filter "$@")
1158     test_cxx "$@" <<EOF && append CXXFLAGS "$@"
1159 int x;
1160 EOF
1161 }
1162
1163 test_objcflags(){
1164     log test_objcflags "$@"
1165     set -- $($objcflags_filter "$@")
1166     test_objcc "$@" <<EOF
1167 int x;
1168 EOF
1169 }
1170
1171 check_objcflags(){
1172     log check_objcflags "$@"
1173     test_objcflags "$@" && add_objcflags "$@"
1174 }
1175
1176 test_ldflags(){
1177     log test_ldflags "$@"
1178     set -- $($ldflags_filter "$@")
1179     test_ld "cc" "$@" <<EOF
1180 int main(void){ return 0; }
1181 EOF
1182 }
1183
1184 check_ldflags(){
1185     log check_ldflags "$@"
1186     test_ldflags "$@" && add_ldflags "$@"
1187 }
1188
1189 test_stripflags(){
1190     log test_stripflags "$@"
1191     # call test_cc to get a fresh TMPO
1192     test_cc <<EOF
1193 int main(void) { return 0; }
1194 EOF
1195     test_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1196 }
1197
1198 check_stripflags(){
1199     log check_stripflags "$@"
1200     test_stripflags "$@" && add_stripflags "$@"
1201 }
1202
1203 check_headers(){
1204     log check_headers "$@"
1205     headers=$1
1206     shift
1207     disable_sanitized $headers
1208     {
1209         for hdr in $headers; do
1210             print_include $hdr
1211         done
1212         echo "int x;"
1213     } | test_cpp "$@" && enable_sanitized $headers
1214 }
1215
1216 check_header_objcc(){
1217     log check_header_objcc "$@"
1218     rm -f -- "$TMPO"
1219     header=$1
1220     shift
1221     disable_sanitized $header
1222     {
1223        echo "#include <$header>"
1224        echo "int main(void) { return 0; }"
1225     } | test_objcc && test_stat "$TMPO" && enable_sanitized $header
1226 }
1227
1228 check_apple_framework(){
1229     log check_apple_framework "$@"
1230     framework="$1"
1231     name="$(tolower $framework)"
1232     header="${framework}/${framework}.h"
1233     disable $name
1234     check_header_objcc $header &&
1235         enable $name && eval ${name}_extralibs='"-framework $framework"'
1236 }
1237
1238 check_func(){
1239     log check_func "$@"
1240     func=$1
1241     shift
1242     disable $func
1243     test_ld "cc" "$@" <<EOF && enable $func
1244 extern int $func();
1245 int main(void){ $func(); }
1246 EOF
1247 }
1248
1249 check_complexfunc(){
1250     log check_complexfunc "$@"
1251     func=$1
1252     narg=$2
1253     shift 2
1254     test $narg = 2 && args="f, g" || args="f * I"
1255     disable $func
1256     test_ld "cc" "$@" <<EOF && enable $func
1257 #include <complex.h>
1258 #include <math.h>
1259 float foo(complex float f, complex float g) { return $func($args); }
1260 int main(void){ return (int) foo; }
1261 EOF
1262 }
1263
1264 check_mathfunc(){
1265     log check_mathfunc "$@"
1266     func=$1
1267     narg=$2
1268     shift 2
1269     test $narg = 2 && args="f, g" || args="f"
1270     disable $func
1271     test_ld "cc" "$@" <<EOF && enable $func
1272 #include <math.h>
1273 float foo(float f, float g) { return $func($args); }
1274 int main(void){ return (int) foo; }
1275 EOF
1276 }
1277
1278 check_func_headers(){
1279     log check_func_headers "$@"
1280     headers=$1
1281     funcs=$2
1282     shift 2
1283     {
1284         for hdr in $headers; do
1285             print_include $hdr
1286         done
1287         echo "#include <stdint.h>"
1288         for func in $funcs; do
1289             echo "long check_$func(void) { return (long) $func; }"
1290         done
1291         echo "int main(void) { int ret = 0;"
1292         # LTO could optimize out the test functions without this
1293         for func in $funcs; do
1294             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1295         done
1296         echo "return ret; }"
1297     } | test_ld "cc" "$@" && enable $funcs && enable_sanitized $headers
1298 }
1299
1300 check_class_headers_cpp(){
1301     log check_class_headers_cpp "$@"
1302     headers=$1
1303     classes=$2
1304     shift 2
1305     {
1306         for hdr in $headers; do
1307             echo "#include <$hdr>"
1308         done
1309         echo "int main(void) { "
1310         i=1
1311         for class in $classes; do
1312             echo "$class obj$i;"
1313             i=$(expr $i + 1)
1314         done
1315         echo "return 0; }"
1316     } | test_ld "cxx" "$@" && enable $funcs && enable_sanitized $headers
1317 }
1318
1319 test_cpp_condition(){
1320     log test_cpp_condition "$@"
1321     header=$1
1322     condition=$2
1323     shift 2
1324     test_cpp "$@" <<EOF
1325 #include <$header>
1326 #if !($condition)
1327 #error "unsatisfied condition: $condition"
1328 #endif
1329 EOF
1330 }
1331
1332 check_cpp_condition(){
1333     log check_cpp_condition "$@"
1334     name=$1
1335     shift 1
1336     disable $name
1337     test_cpp_condition "$@" && enable $name
1338 }
1339
1340 test_cflags_cc(){
1341     log test_cflags_cc "$@"
1342     flags=$1
1343     header=$2
1344     condition=$3
1345     shift 3
1346     set -- $($cflags_filter "$flags")
1347     test_cc "$@" <<EOF
1348 #include <$header>
1349 #if !($condition)
1350 #error "unsatisfied condition: $condition"
1351 #endif
1352 EOF
1353 }
1354
1355 check_lib(){
1356     log check_lib "$@"
1357     name="$1"
1358     headers="$2"
1359     funcs="$3"
1360     shift 3
1361     disable $name
1362     check_func_headers "$headers" "$funcs" "$@" &&
1363         enable $name && eval ${name}_extralibs="\$@"
1364 }
1365
1366 check_lib_cpp(){
1367     log check_lib_cpp "$@"
1368     name="$1"
1369     headers="$2"
1370     classes="$3"
1371     shift 3
1372     disable $name
1373     check_class_headers_cpp "$headers" "$classes" "$@" &&
1374         enable $name && eval ${name}_extralibs="\$@"
1375 }
1376
1377 test_pkg_config(){
1378     log test_pkg_config "$@"
1379     name="$1"
1380     pkg_version="$2"
1381     pkg="${2%% *}"
1382     headers="$3"
1383     funcs="$4"
1384     shift 4
1385     disable $name
1386     test_cmd $pkg_config --exists --print-errors $pkg_version || return
1387     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1388     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1389     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1390         enable $name &&
1391         set_sanitized "${name}_cflags"    $pkg_cflags &&
1392         set_sanitized "${name}_extralibs" $pkg_libs
1393 }
1394
1395 check_pkg_config(){
1396     log check_pkg_config "$@"
1397     name="$1"
1398     test_pkg_config "$@" &&
1399         eval add_cflags \$${name}_cflags
1400 }
1401
1402 test_exec(){
1403     test_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1404 }
1405
1406 check_exec_crash(){
1407     log check_exec_crash "$@"
1408     code=$(cat)
1409
1410     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1411     # are safe but may not be available everywhere.  Thus we use
1412     # raise(SIGTERM) instead.  The check is run in a subshell so we
1413     # can redirect the "Terminated" message from the shell.  SIGBUS
1414     # is not defined by standard C so it is used conditionally.
1415
1416     (test_exec "$@") >> $logfile 2>&1 <<EOF
1417 #include <signal.h>
1418 static void sighandler(int sig){
1419     raise(SIGTERM);
1420 }
1421 int foo(void){
1422     $code
1423 }
1424 int (*func_ptr)(void) = foo;
1425 int main(void){
1426     signal(SIGILL, sighandler);
1427     signal(SIGFPE, sighandler);
1428     signal(SIGSEGV, sighandler);
1429 #ifdef SIGBUS
1430     signal(SIGBUS, sighandler);
1431 #endif
1432     return func_ptr();
1433 }
1434 EOF
1435 }
1436
1437 check_type(){
1438     log check_type "$@"
1439     headers=$1
1440     type=$2
1441     shift 2
1442     disable_sanitized "$type"
1443     test_code cc "$headers" "$type v" "$@" && enable_sanitized "$type"
1444 }
1445
1446 check_struct(){
1447     log check_struct "$@"
1448     headers=$1
1449     struct=$2
1450     member=$3
1451     shift 3
1452     disable_sanitized "${struct}_${member}"
1453     test_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1454         enable_sanitized "${struct}_${member}"
1455 }
1456
1457 check_builtin(){
1458     log check_builtin "$@"
1459     name=$1
1460     headers=$2
1461     builtin=$3
1462     shift 3
1463     disable "$name"
1464     test_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1465 }
1466
1467 check_compile_assert(){
1468     log check_compile_assert "$@"
1469     name=$1
1470     headers=$2
1471     condition=$3
1472     shift 3
1473     disable "$name"
1474     test_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1475 }
1476
1477 check_cc(){
1478     log check_cc "$@"
1479     name=$1
1480     shift
1481     disable "$name"
1482     test_code cc "$@" && enable "$name"
1483 }
1484
1485 require(){
1486     log require "$@"
1487     name_version="$1"
1488     name="${1%% *}"
1489     shift
1490     check_lib $name "$@" || die "ERROR: $name_version not found"
1491 }
1492
1493 require_cc(){
1494     log require_cc "$@"
1495     name="$1"
1496     check_cc "$@" || die "ERROR: $name failed"
1497 }
1498
1499 require_cpp(){
1500     name="$1"
1501     headers="$2"
1502     classes="$3"
1503     shift 3
1504     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1505 }
1506
1507 require_headers(){
1508     log require_headers "$@"
1509     headers="$1"
1510     check_headers "$@" || die "ERROR: $headers not found"
1511 }
1512
1513 require_cpp_condition(){
1514     log require_cpp_condition "$@"
1515     condition="$3"
1516     check_cpp_condition "$@" || die "ERROR: $condition not satisfied"
1517 }
1518
1519 require_pkg_config(){
1520     log require_pkg_config "$@"
1521     pkg_version="$2"
1522     check_pkg_config "$@" || die "ERROR: $pkg_version not found using pkg-config$pkg_config_fail_message"
1523 }
1524
1525 test_host_cc(){
1526     log test_host_cc "$@"
1527     cat > $TMPC
1528     log_file $TMPC
1529     test_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1530 }
1531
1532 test_host_cpp(){
1533     log test_host_cpp "$@"
1534     cat > $TMPC
1535     log_file $TMPC
1536     test_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1537 }
1538
1539 check_host_cppflags(){
1540     log check_host_cppflags "$@"
1541     test_host_cpp "$@" <<EOF && append host_cppflags "$@"
1542 #include <stdlib.h>
1543 EOF
1544 }
1545
1546 check_host_cflags(){
1547     log check_host_cflags "$@"
1548     set -- $($host_cflags_filter "$@")
1549     test_host_cc "$@" <<EOF && append host_cflags "$@"
1550 int x;
1551 EOF
1552 }
1553
1554 test_host_cpp_condition(){
1555     log test_host_cpp_condition "$@"
1556     header=$1
1557     condition=$2
1558     shift 2
1559     test_host_cpp "$@" <<EOF
1560 #include <$header>
1561 #if !($condition)
1562 #error "unsatisfied condition: $condition"
1563 #endif
1564 EOF
1565 }
1566
1567 check_host_cpp_condition(){
1568     log check_host_cpp_condition "$@"
1569     name=$1
1570     shift 1
1571     disable $name
1572     test_host_cpp_condition "$@" && enable $name
1573 }
1574
1575 cp_if_changed(){
1576     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1577     mkdir -p "$(dirname $2)"
1578     cp -f "$1" "$2"
1579 }
1580
1581 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1582 # system-dependent things.
1583
1584 AVCODEC_COMPONENTS="
1585     bsfs
1586     decoders
1587     encoders
1588     hwaccels
1589     parsers
1590 "
1591
1592 AVDEVICE_COMPONENTS="
1593     indevs
1594     outdevs
1595 "
1596
1597 AVFILTER_COMPONENTS="
1598     filters
1599 "
1600
1601 AVFORMAT_COMPONENTS="
1602     demuxers
1603     muxers
1604     protocols
1605 "
1606
1607 COMPONENT_LIST="
1608     $AVCODEC_COMPONENTS
1609     $AVDEVICE_COMPONENTS
1610     $AVFILTER_COMPONENTS
1611     $AVFORMAT_COMPONENTS
1612 "
1613
1614 EXAMPLE_LIST="
1615     avio_dir_cmd_example
1616     avio_reading_example
1617     decode_audio_example
1618     decode_video_example
1619     demuxing_decoding_example
1620     encode_audio_example
1621     encode_video_example
1622     extract_mvs_example
1623     filter_audio_example
1624     filtering_audio_example
1625     filtering_video_example
1626     http_multiclient_example
1627     hw_decode_example
1628     metadata_example
1629     muxing_example
1630     qsvdec_example
1631     remuxing_example
1632     resampling_audio_example
1633     scaling_video_example
1634     transcode_aac_example
1635     transcoding_example
1636     vaapi_encode_example
1637     vaapi_transcode_example
1638 "
1639
1640 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1641     alsa
1642     appkit
1643     avfoundation
1644     bzlib
1645     coreimage
1646     iconv
1647     libxcb
1648     libxcb_shm
1649     libxcb_shape
1650     libxcb_xfixes
1651     lzma
1652     schannel
1653     sdl2
1654     securetransport
1655     sndio
1656     xlib
1657     zlib
1658 "
1659
1660 EXTERNAL_LIBRARY_GPL_LIST="
1661     avisynth
1662     frei0r
1663     libcdio
1664     libdavs2
1665     librubberband
1666     libvidstab
1667     libx264
1668     libx265
1669     libxavs
1670     libxvid
1671 "
1672
1673 EXTERNAL_LIBRARY_NONFREE_LIST="
1674     decklink
1675     libndi_newtek
1676     libfdk_aac
1677     openssl
1678     libtls
1679 "
1680
1681 EXTERNAL_LIBRARY_VERSION3_LIST="
1682     gmp
1683     liblensfun
1684     libopencore_amrnb
1685     libopencore_amrwb
1686     libvmaf
1687     libvo_amrwbenc
1688     mbedtls
1689     rkmpp
1690 "
1691
1692 EXTERNAL_LIBRARY_GPLV3_LIST="
1693     libsmbclient
1694 "
1695
1696 EXTERNAL_LIBRARY_LIST="
1697     $EXTERNAL_LIBRARY_GPL_LIST
1698     $EXTERNAL_LIBRARY_NONFREE_LIST
1699     $EXTERNAL_LIBRARY_VERSION3_LIST
1700     $EXTERNAL_LIBRARY_GPLV3_LIST
1701     chromaprint
1702     gcrypt
1703     gnutls
1704     jni
1705     ladspa
1706     libaom
1707     libass
1708     libbluray
1709     libbs2b
1710     libcaca
1711     libcelt
1712     libcodec2
1713     libdc1394
1714     libdrm
1715     libflite
1716     libfontconfig
1717     libfreetype
1718     libfribidi
1719     libgme
1720     libgsm
1721     libiec61883
1722     libilbc
1723     libjack
1724     libklvanc
1725     libkvazaar
1726     libmodplug
1727     libmp3lame
1728     libmysofa
1729     libopencv
1730     libopenh264
1731     libopenjpeg
1732     libopenmpt
1733     libopus
1734     libpulse
1735     librsvg
1736     librtmp
1737     libshine
1738     libsmbclient
1739     libsnappy
1740     libsoxr
1741     libspeex
1742     libsrt
1743     libssh
1744     libtensorflow
1745     libtesseract
1746     libtheora
1747     libtwolame
1748     libv4l2
1749     libvorbis
1750     libvpx
1751     libwavpack
1752     libwebp
1753     libxml2
1754     libzimg
1755     libzmq
1756     libzvbi
1757     lv2
1758     mediacodec
1759     openal
1760     opengl
1761     vapoursynth
1762 "
1763
1764 HWACCEL_AUTODETECT_LIBRARY_LIST="
1765     amf
1766     audiotoolbox
1767     crystalhd
1768     cuda
1769     cuvid
1770     d3d11va
1771     dxva2
1772     ffnvcodec
1773     nvdec
1774     nvenc
1775     vaapi
1776     vdpau
1777     videotoolbox
1778     v4l2_m2m
1779     xvmc
1780 "
1781
1782 # catchall list of things that require external libs to link
1783 EXTRALIBS_LIST="
1784     cpu_init
1785     cws2fws
1786 "
1787
1788 HWACCEL_LIBRARY_NONFREE_LIST="
1789     cuda_sdk
1790     libnpp
1791 "
1792
1793 HWACCEL_LIBRARY_LIST="
1794     $HWACCEL_LIBRARY_NONFREE_LIST
1795     libmfx
1796     mmal
1797     omx
1798     opencl
1799 "
1800
1801 DOCUMENT_LIST="
1802     doc
1803     htmlpages
1804     manpages
1805     podpages
1806     txtpages
1807 "
1808
1809 FEATURE_LIST="
1810     ftrapv
1811     gray
1812     hardcoded_tables
1813     omx_rpi
1814     runtime_cpudetect
1815     safe_bitstream_reader
1816     shared
1817     small
1818     static
1819     swscale_alpha
1820 "
1821
1822 # this list should be kept in linking order
1823 LIBRARY_LIST="
1824     avdevice
1825     avfilter
1826     swscale
1827     postproc
1828     avformat
1829     avcodec
1830     swresample
1831     avresample
1832     avutil
1833 "
1834
1835 LICENSE_LIST="
1836     gpl
1837     nonfree
1838     version3
1839 "
1840
1841 PROGRAM_LIST="
1842     ffplay
1843     ffprobe
1844     ffmpeg
1845 "
1846
1847 SUBSYSTEM_LIST="
1848     dct
1849     dwt
1850     error_resilience
1851     faan
1852     fast_unaligned
1853     fft
1854     lsp
1855     lzo
1856     mdct
1857     pixelutils
1858     network
1859     rdft
1860 "
1861
1862 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1863 CONFIG_LIST="
1864     $DOCUMENT_LIST
1865     $EXAMPLE_LIST
1866     $EXTERNAL_LIBRARY_LIST
1867     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1868     $HWACCEL_LIBRARY_LIST
1869     $HWACCEL_AUTODETECT_LIBRARY_LIST
1870     $FEATURE_LIST
1871     $LICENSE_LIST
1872     $LIBRARY_LIST
1873     $PROGRAM_LIST
1874     $SUBSYSTEM_LIST
1875     autodetect
1876     fontconfig
1877     linux_perf
1878     memory_poisoning
1879     neon_clobber_test
1880     ossfuzz
1881     pic
1882     thumb
1883     valgrind_backtrace
1884     xmm_clobber_test
1885     $COMPONENT_LIST
1886 "
1887
1888 THREADS_LIST="
1889     pthreads
1890     os2threads
1891     w32threads
1892 "
1893
1894 ATOMICS_LIST="
1895     atomics_gcc
1896     atomics_suncc
1897     atomics_win32
1898 "
1899
1900 AUTODETECT_LIBS="
1901     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1902     $HWACCEL_AUTODETECT_LIBRARY_LIST
1903     $THREADS_LIST
1904 "
1905
1906 ARCH_LIST="
1907     aarch64
1908     alpha
1909     arm
1910     avr32
1911     avr32_ap
1912     avr32_uc
1913     bfin
1914     ia64
1915     m68k
1916     mips
1917     mips64
1918     parisc
1919     ppc
1920     ppc64
1921     s390
1922     sh4
1923     sparc
1924     sparc64
1925     tilegx
1926     tilepro
1927     tomi
1928     x86
1929     x86_32
1930     x86_64
1931 "
1932
1933 ARCH_EXT_LIST_ARM="
1934     armv5te
1935     armv6
1936     armv6t2
1937     armv8
1938     neon
1939     vfp
1940     vfpv3
1941     setend
1942 "
1943
1944 ARCH_EXT_LIST_MIPS="
1945     mipsfpu
1946     mips32r2
1947     mips32r5
1948     mips64r2
1949     mips32r6
1950     mips64r6
1951     mipsdsp
1952     mipsdspr2
1953     msa
1954 "
1955
1956 ARCH_EXT_LIST_LOONGSON="
1957     loongson2
1958     loongson3
1959     mmi
1960 "
1961
1962 ARCH_EXT_LIST_X86_SIMD="
1963     aesni
1964     amd3dnow
1965     amd3dnowext
1966     avx
1967     avx2
1968     avx512
1969     fma3
1970     fma4
1971     mmx
1972     mmxext
1973     sse
1974     sse2
1975     sse3
1976     sse4
1977     sse42
1978     ssse3
1979     xop
1980 "
1981
1982 ARCH_EXT_LIST_PPC="
1983     altivec
1984     dcbzl
1985     ldbrx
1986     power8
1987     ppc4xx
1988     vsx
1989 "
1990
1991 ARCH_EXT_LIST_X86="
1992     $ARCH_EXT_LIST_X86_SIMD
1993     cpunop
1994     i686
1995 "
1996
1997 ARCH_EXT_LIST="
1998     $ARCH_EXT_LIST_ARM
1999     $ARCH_EXT_LIST_PPC
2000     $ARCH_EXT_LIST_X86
2001     $ARCH_EXT_LIST_MIPS
2002     $ARCH_EXT_LIST_LOONGSON
2003 "
2004
2005 ARCH_FEATURES="
2006     aligned_stack
2007     fast_64bit
2008     fast_clz
2009     fast_cmov
2010     local_aligned
2011     simd_align_16
2012     simd_align_32
2013     simd_align_64
2014 "
2015
2016 BUILTIN_LIST="
2017     atomic_cas_ptr
2018     machine_rw_barrier
2019     MemoryBarrier
2020     mm_empty
2021     rdtsc
2022     sem_timedwait
2023     sync_val_compare_and_swap
2024 "
2025 HAVE_LIST_CMDLINE="
2026     inline_asm
2027     symver
2028     x86asm
2029 "
2030
2031 HAVE_LIST_PUB="
2032     bigendian
2033     fast_unaligned
2034 "
2035
2036 HEADERS_LIST="
2037     arpa_inet_h
2038     asm_types_h
2039     cdio_paranoia_h
2040     cdio_paranoia_paranoia_h
2041     cuda_h
2042     dispatch_dispatch_h
2043     dev_bktr_ioctl_bt848_h
2044     dev_bktr_ioctl_meteor_h
2045     dev_ic_bt8xx_h
2046     dev_video_bktr_ioctl_bt848_h
2047     dev_video_meteor_ioctl_meteor_h
2048     direct_h
2049     dirent_h
2050     dxgidebug_h
2051     dxva_h
2052     ES2_gl_h
2053     gsm_h
2054     io_h
2055     linux_perf_event_h
2056     machine_ioctl_bt848_h
2057     machine_ioctl_meteor_h
2058     malloc_h
2059     opencv2_core_core_c_h
2060     OpenGL_gl3_h
2061     poll_h
2062     sys_param_h
2063     sys_resource_h
2064     sys_select_h
2065     sys_soundcard_h
2066     sys_time_h
2067     sys_un_h
2068     sys_videoio_h
2069     termios_h
2070     udplite_h
2071     unistd_h
2072     valgrind_valgrind_h
2073     windows_h
2074     winsock2_h
2075 "
2076
2077 INTRINSICS_LIST="
2078     intrinsics_neon
2079 "
2080
2081 COMPLEX_FUNCS="
2082     cabs
2083     cexp
2084 "
2085
2086 MATH_FUNCS="
2087     atanf
2088     atan2f
2089     cbrt
2090     cbrtf
2091     copysign
2092     cosf
2093     erf
2094     exp2
2095     exp2f
2096     expf
2097     hypot
2098     isfinite
2099     isinf
2100     isnan
2101     ldexpf
2102     llrint
2103     llrintf
2104     log2
2105     log2f
2106     log10f
2107     lrint
2108     lrintf
2109     powf
2110     rint
2111     round
2112     roundf
2113     sinf
2114     trunc
2115     truncf
2116 "
2117
2118 SYSTEM_FEATURES="
2119     dos_paths
2120     libc_msvcrt
2121     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2122     section_data_rel_ro
2123     threads
2124     uwp
2125     winrt
2126 "
2127
2128 SYSTEM_FUNCS="
2129     access
2130     aligned_malloc
2131     arc4random
2132     clock_gettime
2133     closesocket
2134     CommandLineToArgvW
2135     fcntl
2136     getaddrinfo
2137     gethrtime
2138     getopt
2139     GetProcessAffinityMask
2140     GetProcessMemoryInfo
2141     GetProcessTimes
2142     getrusage
2143     GetSystemTimeAsFileTime
2144     gettimeofday
2145     glob
2146     glXGetProcAddress
2147     gmtime_r
2148     inet_aton
2149     isatty
2150     kbhit
2151     localtime_r
2152     lstat
2153     lzo1x_999_compress
2154     mach_absolute_time
2155     MapViewOfFile
2156     memalign
2157     mkstemp
2158     mmap
2159     mprotect
2160     nanosleep
2161     PeekNamedPipe
2162     posix_memalign
2163     pthread_cancel
2164     sched_getaffinity
2165     SecItemImport
2166     SetConsoleTextAttribute
2167     SetConsoleCtrlHandler
2168     setmode
2169     setrlimit
2170     Sleep
2171     strerror_r
2172     sysconf
2173     sysctl
2174     usleep
2175     UTGetOSTypeFromString
2176     VirtualAlloc
2177     wglGetProcAddress
2178 "
2179
2180 SYSTEM_LIBRARIES="
2181     bcrypt
2182     vaapi_drm
2183     vaapi_x11
2184     vdpau_x11
2185 "
2186
2187 TOOLCHAIN_FEATURES="
2188     as_arch_directive
2189     as_dn_directive
2190     as_fpu_directive
2191     as_func
2192     as_object_arch
2193     asm_mod_q
2194     blocks_extension
2195     ebp_available
2196     ebx_available
2197     gnu_as
2198     gnu_windres
2199     ibm_asm
2200     inline_asm_direct_symbol_refs
2201     inline_asm_labels
2202     inline_asm_nonlocal_labels
2203     pragma_deprecated
2204     rsync_contimeout
2205     symver_asm_label
2206     symver_gnu_asm
2207     vfp_args
2208     xform_asm
2209     xmm_clobbers
2210 "
2211
2212 TYPES_LIST="
2213     kCMVideoCodecType_HEVC
2214     socklen_t
2215     struct_addrinfo
2216     struct_group_source_req
2217     struct_ip_mreq_source
2218     struct_ipv6_mreq
2219     struct_msghdr_msg_flags
2220     struct_pollfd
2221     struct_rusage_ru_maxrss
2222     struct_sctp_event_subscribe
2223     struct_sockaddr_in6
2224     struct_sockaddr_sa_len
2225     struct_sockaddr_storage
2226     struct_stat_st_mtim_tv_nsec
2227     struct_v4l2_frmivalenum_discrete
2228 "
2229
2230 HAVE_LIST="
2231     $ARCH_EXT_LIST
2232     $(add_suffix _external $ARCH_EXT_LIST)
2233     $(add_suffix _inline   $ARCH_EXT_LIST)
2234     $ARCH_FEATURES
2235     $BUILTIN_LIST
2236     $COMPLEX_FUNCS
2237     $HAVE_LIST_CMDLINE
2238     $HAVE_LIST_PUB
2239     $HEADERS_LIST
2240     $INTRINSICS_LIST
2241     $MATH_FUNCS
2242     $SYSTEM_FEATURES
2243     $SYSTEM_FUNCS
2244     $SYSTEM_LIBRARIES
2245     $THREADS_LIST
2246     $TOOLCHAIN_FEATURES
2247     $TYPES_LIST
2248     makeinfo
2249     makeinfo_html
2250     opencl_d3d11
2251     opencl_drm_arm
2252     opencl_drm_beignet
2253     opencl_dxva2
2254     opencl_vaapi_beignet
2255     opencl_vaapi_intel_media
2256     perl
2257     pod2man
2258     texi2html
2259 "
2260
2261 # options emitted with CONFIG_ prefix but not available on the command line
2262 CONFIG_EXTRA="
2263     aandcttables
2264     ac3dsp
2265     adts_header
2266     audio_frame_queue
2267     audiodsp
2268     blockdsp
2269     bswapdsp
2270     cabac
2271     cbs
2272     cbs_h264
2273     cbs_h265
2274     cbs_mpeg2
2275     cbs_vp9
2276     dirac_parse
2277     dnn
2278     dvprofile
2279     exif
2280     faandct
2281     faanidct
2282     fdctdsp
2283     flacdsp
2284     fmtconvert
2285     frame_thread_encoder
2286     g722dsp
2287     golomb
2288     gplv3
2289     h263dsp
2290     h264chroma
2291     h264dsp
2292     h264parse
2293     h264pred
2294     h264qpel
2295     hevcparse
2296     hpeldsp
2297     huffman
2298     huffyuvdsp
2299     huffyuvencdsp
2300     idctdsp
2301     iirfilter
2302     mdct15
2303     intrax8
2304     iso_media
2305     ividsp
2306     jpegtables
2307     lgplv3
2308     libx262
2309     llauddsp
2310     llviddsp
2311     llvidencdsp
2312     lpc
2313     lzf
2314     me_cmp
2315     mpeg_er
2316     mpegaudio
2317     mpegaudiodsp
2318     mpegaudioheader
2319     mpegvideo
2320     mpegvideoenc
2321     mss34dsp
2322     pixblockdsp
2323     qpeldsp
2324     qsv
2325     qsvdec
2326     qsvenc
2327     qsvvpp
2328     rangecoder
2329     riffdec
2330     riffenc
2331     rtpdec
2332     rtpenc_chain
2333     rv34dsp
2334     sinewin
2335     snappy
2336     srtp
2337     startcode
2338     texturedsp
2339     texturedspenc
2340     tpeldsp
2341     vaapi_1
2342     vaapi_encode
2343     vc1dsp
2344     videodsp
2345     vp3dsp
2346     vp56dsp
2347     vp8dsp
2348     wma_freqs
2349     wmv2dsp
2350 "
2351
2352 CMDLINE_SELECT="
2353     $ARCH_EXT_LIST
2354     $CONFIG_LIST
2355     $HAVE_LIST_CMDLINE
2356     $THREADS_LIST
2357     asm
2358     cross_compile
2359     debug
2360     extra_warnings
2361     logging
2362     lto
2363     optimizations
2364     rpath
2365     stripping
2366 "
2367
2368 PATHS_LIST="
2369     bindir
2370     datadir
2371     docdir
2372     incdir
2373     libdir
2374     mandir
2375     pkgconfigdir
2376     prefix
2377     shlibdir
2378     install_name_dir
2379 "
2380
2381 CMDLINE_SET="
2382     $PATHS_LIST
2383     ar
2384     arch
2385     as
2386     assert_level
2387     build_suffix
2388     cc
2389     objcc
2390     cpu
2391     cross_prefix
2392     custom_allocator
2393     cxx
2394     dep_cc
2395     doxygen
2396     env
2397     extra_version
2398     gas
2399     host_cc
2400     host_cflags
2401     host_extralibs
2402     host_ld
2403     host_ldflags
2404     host_os
2405     ignore_tests
2406     install
2407     ld
2408     ln_s
2409     logfile
2410     malloc_prefix
2411     nm
2412     optflags
2413     nvcc
2414     nvccflags
2415     pkg_config
2416     pkg_config_flags
2417     progs_suffix
2418     random_seed
2419     ranlib
2420     samples
2421     strip
2422     sws_max_filter_size
2423     sysinclude
2424     sysroot
2425     target_exec
2426     target_os
2427     target_path
2428     target_samples
2429     tempprefix
2430     toolchain
2431     valgrind
2432     x86asmexe
2433 "
2434
2435 CMDLINE_APPEND="
2436     extra_cflags
2437     extra_cxxflags
2438     extra_objcflags
2439     host_cppflags
2440 "
2441
2442 # code dependency declarations
2443
2444 # architecture extensions
2445
2446 armv5te_deps="arm"
2447 armv6_deps="arm"
2448 armv6t2_deps="arm"
2449 armv8_deps="aarch64"
2450 neon_deps_any="aarch64 arm"
2451 intrinsics_neon_deps="neon"
2452 vfp_deps_any="aarch64 arm"
2453 vfpv3_deps="vfp"
2454 setend_deps="arm"
2455
2456 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2457
2458 altivec_deps="ppc"
2459 dcbzl_deps="ppc"
2460 ldbrx_deps="ppc"
2461 ppc4xx_deps="ppc"
2462 vsx_deps="altivec"
2463 power8_deps="vsx"
2464
2465 loongson2_deps="mips"
2466 loongson3_deps="mips"
2467 mips32r2_deps="mips"
2468 mips32r5_deps="mips"
2469 mips32r6_deps="mips"
2470 mips64r2_deps="mips"
2471 mips64r6_deps="mips"
2472 mipsfpu_deps="mips"
2473 mipsdsp_deps="mips"
2474 mipsdspr2_deps="mips"
2475 mmi_deps="mips"
2476 msa_deps="mipsfpu"
2477
2478 cpunop_deps="i686"
2479 x86_64_select="i686"
2480 x86_64_suggest="fast_cmov"
2481
2482 amd3dnow_deps="mmx"
2483 amd3dnowext_deps="amd3dnow"
2484 i686_deps="x86"
2485 mmx_deps="x86"
2486 mmxext_deps="mmx"
2487 sse_deps="mmxext"
2488 sse2_deps="sse"
2489 sse3_deps="sse2"
2490 ssse3_deps="sse3"
2491 sse4_deps="ssse3"
2492 sse42_deps="sse4"
2493 aesni_deps="sse42"
2494 avx_deps="sse42"
2495 xop_deps="avx"
2496 fma3_deps="avx"
2497 fma4_deps="avx"
2498 avx2_deps="avx"
2499 avx512_deps="avx2"
2500
2501 mmx_external_deps="x86asm"
2502 mmx_inline_deps="inline_asm x86"
2503 mmx_suggest="mmx_external mmx_inline"
2504
2505 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2506     eval dep=\$${ext}_deps
2507     eval ${ext}_external_deps='"${dep}_external"'
2508     eval ${ext}_inline_deps='"${dep}_inline"'
2509     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2510 done
2511
2512 aligned_stack_if_any="aarch64 ppc x86"
2513 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2514 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2515 fast_unaligned_if_any="aarch64 ppc x86"
2516 simd_align_16_if_any="altivec neon sse"
2517 simd_align_32_if_any="avx"
2518 simd_align_64_if_any="avx512"
2519
2520 # system capabilities
2521 linux_perf_deps="linux_perf_event_h"
2522 symver_if_any="symver_asm_label symver_gnu_asm"
2523 valgrind_backtrace_conflict="optimizations"
2524 valgrind_backtrace_deps="valgrind_valgrind_h"
2525
2526 # threading support
2527 atomics_gcc_if="sync_val_compare_and_swap"
2528 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2529 atomics_win32_if="MemoryBarrier"
2530 atomics_native_if_any="$ATOMICS_LIST"
2531 w32threads_deps="atomics_native"
2532 threads_if_any="$THREADS_LIST"
2533
2534 # subsystems
2535 cbs_h264_select="cbs golomb"
2536 cbs_h265_select="cbs golomb"
2537 cbs_mpeg2_select="cbs"
2538 cbs_vp9_select="cbs"
2539 dct_select="rdft"
2540 dirac_parse_select="golomb"
2541 dnn_suggest="libtensorflow"
2542 error_resilience_select="me_cmp"
2543 faandct_deps="faan"
2544 faandct_select="fdctdsp"
2545 faanidct_deps="faan"
2546 faanidct_select="idctdsp"
2547 h264dsp_select="startcode"
2548 hevcparse_select="golomb"
2549 frame_thread_encoder_deps="encoders threads"
2550 intrax8_select="blockdsp idctdsp"
2551 mdct_select="fft"
2552 mdct15_select="fft"
2553 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2554 mpeg_er_select="error_resilience"
2555 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2556 mpegaudiodsp_select="dct"
2557 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2558 mpegvideoenc_select="aandcttables me_cmp mpegvideo pixblockdsp qpeldsp"
2559 vc1dsp_select="h264chroma qpeldsp startcode"
2560 rdft_select="fft"
2561
2562 # decoders / encoders
2563 aac_decoder_select="adts_header mdct15 mdct sinewin"
2564 aac_fixed_decoder_select="adts_header mdct sinewin"
2565 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2566 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2567 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2568 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2569 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2570 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2571 adpcm_g722_decoder_select="g722dsp"
2572 adpcm_g722_encoder_select="g722dsp"
2573 aic_decoder_select="golomb idctdsp"
2574 alac_encoder_select="lpc"
2575 als_decoder_select="bswapdsp"
2576 amrnb_decoder_select="lsp"
2577 amrwb_decoder_select="lsp"
2578 amv_decoder_select="sp5x_decoder exif"
2579 amv_encoder_select="jpegtables mpegvideoenc"
2580 ape_decoder_select="bswapdsp llauddsp"
2581 apng_decoder_deps="zlib"
2582 apng_encoder_deps="zlib"
2583 apng_encoder_select="llvidencdsp"
2584 aptx_decoder_select="audio_frame_queue"
2585 aptx_encoder_select="audio_frame_queue"
2586 aptx_hd_decoder_select="audio_frame_queue"
2587 aptx_hd_encoder_select="audio_frame_queue"
2588 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2589 asv1_encoder_select="aandcttables bswapdsp fdctdsp pixblockdsp"
2590 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2591 asv2_encoder_select="aandcttables bswapdsp fdctdsp pixblockdsp"
2592 atrac1_decoder_select="mdct sinewin"
2593 atrac3_decoder_select="mdct"
2594 atrac3p_decoder_select="mdct sinewin"
2595 atrac9_decoder_select="mdct"
2596 avrn_decoder_select="exif jpegtables"
2597 bink_decoder_select="blockdsp hpeldsp"
2598 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2599 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2600 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2601 clearvideo_decoder_select="idctdsp"
2602 cllc_decoder_select="bswapdsp"
2603 comfortnoise_encoder_select="lpc"
2604 cook_decoder_select="audiodsp mdct sinewin"
2605 cscd_decoder_select="lzo"
2606 cscd_decoder_suggest="zlib"
2607 dca_decoder_select="mdct"
2608 dds_decoder_select="texturedsp"
2609 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2610 dnxhd_decoder_select="blockdsp idctdsp"
2611 dnxhd_encoder_select="blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2612 dolby_e_decoder_select="mdct"
2613 dvvideo_decoder_select="dvprofile idctdsp"
2614 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2615 dxa_decoder_deps="zlib"
2616 dxv_decoder_select="lzf texturedsp"
2617 eac3_decoder_select="ac3_decoder"
2618 eac3_encoder_select="ac3_encoder"
2619 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2620 eatgq_decoder_select="aandcttables"
2621 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2622 exr_decoder_deps="zlib"
2623 ffv1_decoder_select="rangecoder"
2624 ffv1_encoder_select="rangecoder"
2625 ffvhuff_decoder_select="huffyuv_decoder"
2626 ffvhuff_encoder_select="huffyuv_encoder"
2627 fic_decoder_select="golomb"
2628 flac_decoder_select="flacdsp"
2629 flac_encoder_select="bswapdsp flacdsp lpc"
2630 flashsv2_decoder_deps="zlib"
2631 flashsv2_encoder_deps="zlib"
2632 flashsv_decoder_deps="zlib"
2633 flashsv_encoder_deps="zlib"
2634 flv_decoder_select="h263_decoder"
2635 flv_encoder_select="h263_encoder"
2636 fourxm_decoder_select="blockdsp bswapdsp"
2637 fraps_decoder_select="bswapdsp huffman"
2638 g2m_decoder_deps="zlib"
2639 g2m_decoder_select="blockdsp idctdsp jpegtables"
2640 g729_decoder_select="audiodsp"
2641 h261_decoder_select="mpegvideo"
2642 h261_encoder_select="mpegvideoenc"
2643 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2644 h263_encoder_select="h263dsp mpegvideoenc"
2645 h263i_decoder_select="h263_decoder"
2646 h263p_decoder_select="h263_decoder"
2647 h263p_encoder_select="h263_encoder"
2648 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2649 h264_decoder_suggest="error_resilience"
2650 hap_decoder_select="snappy texturedsp"
2651 hap_encoder_deps="libsnappy"
2652 hap_encoder_select="texturedspenc"
2653 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2654 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2655 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2656 iac_decoder_select="imc_decoder"
2657 imc_decoder_select="bswapdsp fft mdct sinewin"
2658 indeo3_decoder_select="hpeldsp"
2659 indeo4_decoder_select="ividsp"
2660 indeo5_decoder_select="ividsp"
2661 interplay_video_decoder_select="hpeldsp"
2662 jpegls_decoder_select="mjpeg_decoder"
2663 jv_decoder_select="blockdsp"
2664 lagarith_decoder_select="llviddsp"
2665 ljpeg_encoder_select="idctdsp jpegtables mpegvideoenc"
2666 magicyuv_decoder_select="llviddsp"
2667 magicyuv_encoder_select="llvidencdsp"
2668 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2669 metasound_decoder_select="lsp mdct sinewin"
2670 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2671 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2672 mjpeg_encoder_select="jpegtables mpegvideoenc"
2673 mjpegb_decoder_select="mjpeg_decoder"
2674 mlp_decoder_select="mlp_parser"
2675 mlp_encoder_select="lpc"
2676 motionpixels_decoder_select="bswapdsp"
2677 mp1_decoder_select="mpegaudio"
2678 mp1float_decoder_select="mpegaudio"
2679 mp2_decoder_select="mpegaudio"
2680 mp2float_decoder_select="mpegaudio"
2681 mp3_decoder_select="mpegaudio"
2682 mp3adu_decoder_select="mpegaudio"
2683 mp3adufloat_decoder_select="mpegaudio"
2684 mp3float_decoder_select="mpegaudio"
2685 mp3on4_decoder_select="mpegaudio"
2686 mp3on4float_decoder_select="mpegaudio"
2687 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2688 mpc8_decoder_select="mpegaudiodsp"
2689 mpegvideo_decoder_select="mpegvideo"
2690 mpeg1video_decoder_select="mpegvideo"
2691 mpeg1video_encoder_select="mpegvideoenc h263dsp"
2692 mpeg2video_decoder_select="mpegvideo"
2693 mpeg2video_encoder_select="mpegvideoenc h263dsp"
2694 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2695 mpeg4_encoder_select="h263_encoder"
2696 msa1_decoder_select="mss34dsp"
2697 mscc_decoder_deps="zlib"
2698 msmpeg4v1_decoder_select="h263_decoder"
2699 msmpeg4v2_decoder_select="h263_decoder"
2700 msmpeg4v2_encoder_select="h263_encoder"
2701 msmpeg4v3_decoder_select="h263_decoder"
2702 msmpeg4v3_encoder_select="h263_encoder"
2703 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2704 mts2_decoder_select="mss34dsp"
2705 mwsc_decoder_deps="zlib"
2706 mxpeg_decoder_select="mjpeg_decoder"
2707 nellymoser_decoder_select="mdct sinewin"
2708 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2709 nuv_decoder_select="idctdsp lzo"
2710 on2avc_decoder_select="mdct"
2711 opus_decoder_deps="swresample"
2712 opus_decoder_select="mdct15"
2713 opus_encoder_select="audio_frame_queue mdct15"
2714 png_decoder_deps="zlib"
2715 png_encoder_deps="zlib"
2716 png_encoder_select="llvidencdsp"
2717 prores_decoder_select="blockdsp idctdsp"
2718 prores_encoder_select="fdctdsp"
2719 qcelp_decoder_select="lsp"
2720 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2721 ra_144_decoder_select="audiodsp"
2722 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2723 ralf_decoder_select="golomb"
2724 rasc_decoder_deps="zlib"
2725 rawvideo_decoder_select="bswapdsp"
2726 rscc_decoder_deps="zlib"
2727 rtjpeg_decoder_select="me_cmp"
2728 rv10_decoder_select="h263_decoder"
2729 rv10_encoder_select="h263_encoder"
2730 rv20_decoder_select="h263_decoder"
2731 rv20_encoder_select="h263_encoder"
2732 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2733 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2734 screenpresso_decoder_deps="zlib"
2735 shorten_decoder_select="bswapdsp"
2736 sipr_decoder_select="lsp"
2737 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2738 snow_encoder_select="dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2739 sonic_decoder_select="golomb rangecoder"
2740 sonic_encoder_select="golomb rangecoder"
2741 sonic_ls_encoder_select="golomb rangecoder"
2742 sp5x_decoder_select="mjpeg_decoder"
2743 srgc_decoder_deps="zlib"
2744 svq1_decoder_select="hpeldsp"
2745 svq1_encoder_select="hpeldsp me_cmp mpegvideoenc"
2746 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2747 svq3_decoder_suggest="zlib"
2748 tak_decoder_select="audiodsp"
2749 tdsc_decoder_deps="zlib"
2750 tdsc_decoder_select="mjpeg_decoder"
2751 theora_decoder_select="vp3_decoder"
2752 thp_decoder_select="mjpeg_decoder"
2753 tiff_decoder_suggest="zlib lzma"
2754 tiff_encoder_suggest="zlib"
2755 truehd_decoder_select="mlp_parser"
2756 truehd_encoder_select="lpc"
2757 truemotion2_decoder_select="bswapdsp"
2758 truespeech_decoder_select="bswapdsp"
2759 tscc_decoder_deps="zlib"
2760 twinvq_decoder_select="mdct lsp sinewin"
2761 txd_decoder_select="texturedsp"
2762 utvideo_decoder_select="bswapdsp llviddsp"
2763 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2764 vble_decoder_select="llviddsp"
2765 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2766 vc1image_decoder_select="vc1_decoder"
2767 vorbis_decoder_select="mdct"
2768 vorbis_encoder_select="audio_frame_queue mdct"
2769 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2770 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2771 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2772 vp6a_decoder_select="vp6_decoder"
2773 vp6f_decoder_select="vp6_decoder"
2774 vp7_decoder_select="h264pred videodsp vp8dsp"
2775 vp8_decoder_select="h264pred videodsp vp8dsp"
2776 vp9_decoder_select="videodsp vp9_parser vp9_superframe_split_bsf"
2777 wcmv_decoder_deps="zlib"
2778 webp_decoder_select="vp8_decoder exif"
2779 wmalossless_decoder_select="llauddsp"
2780 wmapro_decoder_select="mdct sinewin wma_freqs"
2781 wmav1_decoder_select="mdct sinewin wma_freqs"
2782 wmav1_encoder_select="mdct sinewin wma_freqs"
2783 wmav2_decoder_select="mdct sinewin wma_freqs"
2784 wmav2_encoder_select="mdct sinewin wma_freqs"
2785 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2786 wmv1_decoder_select="h263_decoder"
2787 wmv1_encoder_select="h263_encoder"
2788 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2789 wmv2_encoder_select="h263_encoder wmv2dsp"
2790 wmv3_decoder_select="vc1_decoder"
2791 wmv3image_decoder_select="wmv3_decoder"
2792 xma1_decoder_select="wmapro_decoder"
2793 xma2_decoder_select="wmapro_decoder"
2794 zerocodec_decoder_deps="zlib"
2795 zlib_decoder_deps="zlib"
2796 zlib_encoder_deps="zlib"
2797 zmbv_decoder_deps="zlib"
2798 zmbv_encoder_deps="zlib"
2799
2800 # hardware accelerators
2801 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2802 cuda_deps="ffnvcodec"
2803 cuvid_deps="ffnvcodec"
2804 d3d11va_deps="dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2805 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32 user32"
2806 ffnvcodec_deps_any="libdl LoadLibrary"
2807 nvdec_deps="ffnvcodec"
2808 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2809 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2810 xvmc_deps="X11_extensions_XvMClib_h"
2811
2812 h263_vaapi_hwaccel_deps="vaapi"
2813 h263_vaapi_hwaccel_select="h263_decoder"
2814 h263_videotoolbox_hwaccel_deps="videotoolbox"
2815 h263_videotoolbox_hwaccel_select="h263_decoder"
2816 h264_d3d11va_hwaccel_deps="d3d11va"
2817 h264_d3d11va_hwaccel_select="h264_decoder"
2818 h264_d3d11va2_hwaccel_deps="d3d11va"
2819 h264_d3d11va2_hwaccel_select="h264_decoder"
2820 h264_dxva2_hwaccel_deps="dxva2"
2821 h264_dxva2_hwaccel_select="h264_decoder"
2822 h264_nvdec_hwaccel_deps="nvdec"
2823 h264_nvdec_hwaccel_select="h264_decoder"
2824 h264_vaapi_hwaccel_deps="vaapi"
2825 h264_vaapi_hwaccel_select="h264_decoder"
2826 h264_vdpau_hwaccel_deps="vdpau"
2827 h264_vdpau_hwaccel_select="h264_decoder"
2828 h264_videotoolbox_hwaccel_deps="videotoolbox"
2829 h264_videotoolbox_hwaccel_select="h264_decoder"
2830 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2831 hevc_d3d11va_hwaccel_select="hevc_decoder"
2832 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2833 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2834 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2835 hevc_dxva2_hwaccel_select="hevc_decoder"
2836 hevc_nvdec_hwaccel_deps="nvdec"
2837 hevc_nvdec_hwaccel_select="hevc_decoder"
2838 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2839 hevc_vaapi_hwaccel_select="hevc_decoder"
2840 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2841 hevc_vdpau_hwaccel_select="hevc_decoder"
2842 hevc_videotoolbox_hwaccel_deps="videotoolbox"
2843 hevc_videotoolbox_hwaccel_select="hevc_decoder"
2844 mjpeg_nvdec_hwaccel_deps="nvdec"
2845 mjpeg_nvdec_hwaccel_select="mjpeg_decoder"
2846 mjpeg_vaapi_hwaccel_deps="vaapi"
2847 mjpeg_vaapi_hwaccel_select="mjpeg_decoder"
2848 mpeg_xvmc_hwaccel_deps="xvmc"
2849 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2850 mpeg1_nvdec_hwaccel_deps="nvdec"
2851 mpeg1_nvdec_hwaccel_select="mpeg1video_decoder"
2852 mpeg1_vdpau_hwaccel_deps="vdpau"
2853 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2854 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2855 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2856 mpeg1_xvmc_hwaccel_deps="xvmc"
2857 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2858 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2859 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2860 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2861 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2862 mpeg2_dxva2_hwaccel_deps="dxva2"
2863 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2864 mpeg2_nvdec_hwaccel_deps="nvdec"
2865 mpeg2_nvdec_hwaccel_select="mpeg2video_decoder"
2866 mpeg2_vaapi_hwaccel_deps="vaapi"
2867 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2868 mpeg2_vdpau_hwaccel_deps="vdpau"
2869 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2870 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2871 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2872 mpeg2_xvmc_hwaccel_deps="xvmc"
2873 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2874 mpeg4_nvdec_hwaccel_deps="nvdec"
2875 mpeg4_nvdec_hwaccel_select="mpeg4_decoder"
2876 mpeg4_vaapi_hwaccel_deps="vaapi"
2877 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2878 mpeg4_vdpau_hwaccel_deps="vdpau"
2879 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2880 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2881 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2882 vc1_d3d11va_hwaccel_deps="d3d11va"
2883 vc1_d3d11va_hwaccel_select="vc1_decoder"
2884 vc1_d3d11va2_hwaccel_deps="d3d11va"
2885 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2886 vc1_dxva2_hwaccel_deps="dxva2"
2887 vc1_dxva2_hwaccel_select="vc1_decoder"
2888 vc1_nvdec_hwaccel_deps="nvdec"
2889 vc1_nvdec_hwaccel_select="vc1_decoder"
2890 vc1_vaapi_hwaccel_deps="vaapi"
2891 vc1_vaapi_hwaccel_select="vc1_decoder"
2892 vc1_vdpau_hwaccel_deps="vdpau"
2893 vc1_vdpau_hwaccel_select="vc1_decoder"
2894 vp8_nvdec_hwaccel_deps="nvdec"
2895 vp8_nvdec_hwaccel_select="vp8_decoder"
2896 vp8_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferVP8"
2897 vp8_vaapi_hwaccel_select="vp8_decoder"
2898 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2899 vp9_d3d11va_hwaccel_select="vp9_decoder"
2900 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2901 vp9_d3d11va2_hwaccel_select="vp9_decoder"
2902 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2903 vp9_dxva2_hwaccel_select="vp9_decoder"
2904 vp9_nvdec_hwaccel_deps="nvdec"
2905 vp9_nvdec_hwaccel_select="vp9_decoder"
2906 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2907 vp9_vaapi_hwaccel_select="vp9_decoder"
2908 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2909 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2910 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2911 wmv3_nvdec_hwaccel_select="vc1_nvdec_hwaccel"
2912 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2913 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2914
2915 # hardware-accelerated codecs
2916 omx_deps="libdl pthreads"
2917 omx_rpi_select="omx"
2918 qsv_deps="libmfx"
2919 qsvdec_select="qsv"
2920 qsvenc_select="qsv"
2921 qsvvpp_select="qsv"
2922 vaapi_encode_deps="vaapi"
2923 v4l2_m2m_deps="linux_videodev2_h sem_timedwait"
2924
2925 hwupload_cuda_filter_deps="ffnvcodec"
2926 scale_npp_filter_deps="ffnvcodec libnpp"
2927 scale_cuda_filter_deps="cuda_sdk"
2928 thumbnail_cuda_filter_deps="cuda_sdk"
2929 transpose_npp_filter_deps="ffnvcodec libnpp"
2930
2931 amf_deps_any="libdl LoadLibrary"
2932 nvenc_deps="ffnvcodec"
2933 nvenc_deps_any="libdl LoadLibrary"
2934 nvenc_encoder_deps="nvenc"
2935
2936 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
2937 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
2938 h264_amf_encoder_deps="amf"
2939 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2940 h264_cuvid_decoder_deps="cuvid"
2941 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2942 h264_mediacodec_decoder_deps="mediacodec"
2943 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2944 h264_mmal_decoder_deps="mmal"
2945 h264_nvenc_encoder_deps="nvenc"
2946 h264_omx_encoder_deps="omx"
2947 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec"
2948 h264_qsv_encoder_select="qsvenc"
2949 h264_rkmpp_decoder_deps="rkmpp"
2950 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
2951 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2952 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
2953 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
2954 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
2955 hevc_amf_encoder_deps="amf"
2956 hevc_cuvid_decoder_deps="cuvid"
2957 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
2958 hevc_mediacodec_decoder_deps="mediacodec"
2959 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2960 hevc_nvenc_encoder_deps="nvenc"
2961 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec"
2962 hevc_qsv_encoder_select="hevcparse qsvenc"
2963 hevc_rkmpp_decoder_deps="rkmpp"
2964 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
2965 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2966 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
2967 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
2968 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
2969 mjpeg_cuvid_decoder_deps="cuvid"
2970 mjpeg_qsv_encoder_deps="libmfx"
2971 mjpeg_qsv_encoder_select="qsvenc"
2972 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2973 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2974 mpeg1_cuvid_decoder_deps="cuvid"
2975 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
2976 mpeg2_crystalhd_decoder_select="crystalhd"
2977 mpeg2_cuvid_decoder_deps="cuvid"
2978 mpeg2_mmal_decoder_deps="mmal"
2979 mpeg2_mediacodec_decoder_deps="mediacodec"
2980 mpeg2_qsv_decoder_select="qsvdec mpegvideo_parser"
2981 mpeg2_qsv_encoder_select="qsvenc"
2982 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2983 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
2984 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
2985 mpeg4_crystalhd_decoder_select="crystalhd"
2986 mpeg4_cuvid_decoder_deps="cuvid"
2987 mpeg4_mediacodec_decoder_deps="mediacodec"
2988 mpeg4_mmal_decoder_deps="mmal"
2989 mpeg4_omx_encoder_deps="omx"
2990 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2991 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2992 msmpeg4_crystalhd_decoder_select="crystalhd"
2993 nvenc_h264_encoder_select="h264_nvenc_encoder"
2994 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2995 vc1_crystalhd_decoder_select="crystalhd"
2996 vc1_cuvid_decoder_deps="cuvid"
2997 vc1_mmal_decoder_deps="mmal"
2998 vc1_qsv_decoder_select="qsvdec vc1_parser"
2999 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
3000 vp8_cuvid_decoder_deps="cuvid"
3001 vp8_mediacodec_decoder_deps="mediacodec"
3002 vp8_qsv_decoder_select="qsvdec vp8_parser"
3003 vp8_rkmpp_decoder_deps="rkmpp"
3004 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
3005 vp8_vaapi_encoder_select="vaapi_encode"
3006 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
3007 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
3008 vp9_cuvid_decoder_deps="cuvid"
3009 vp9_mediacodec_decoder_deps="mediacodec"
3010 vp9_rkmpp_decoder_deps="rkmpp"
3011 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
3012 vp9_vaapi_encoder_select="vaapi_encode"
3013 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
3014 wmv3_crystalhd_decoder_select="crystalhd"
3015
3016 # parsers
3017 aac_parser_select="adts_header"
3018 h264_parser_select="golomb h264dsp h264parse"
3019 hevc_parser_select="hevcparse"
3020 mpegaudio_parser_select="mpegaudioheader"
3021 mpegvideo_parser_select="mpegvideo"
3022 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
3023 vc1_parser_select="vc1dsp"
3024
3025 # bitstream_filters
3026 aac_adtstoasc_bsf_select="adts_header"
3027 eac3_core_bsf_select="ac3_parser"
3028 filter_units_bsf_select="cbs"
3029 h264_metadata_bsf_deps="const_nan"
3030 h264_metadata_bsf_select="cbs_h264"
3031 h264_redundant_pps_bsf_select="cbs_h264"
3032 hevc_metadata_bsf_select="cbs_h265"
3033 mjpeg2jpeg_bsf_select="jpegtables"
3034 mpeg2_metadata_bsf_select="cbs_mpeg2"
3035 trace_headers_bsf_select="cbs"
3036 vp9_metadata_bsf_select="cbs_vp9"
3037
3038 # external libraries
3039 aac_at_decoder_deps="audiotoolbox"
3040 aac_at_decoder_select="aac_adtstoasc_bsf"
3041 ac3_at_decoder_deps="audiotoolbox"
3042 ac3_at_decoder_select="ac3_parser"
3043 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
3044 alac_at_decoder_deps="audiotoolbox"
3045 amr_nb_at_decoder_deps="audiotoolbox"
3046 avisynth_deps_any="libdl LoadLibrary"
3047 avisynth_demuxer_deps="avisynth"
3048 avisynth_demuxer_select="riffdec"
3049 eac3_at_decoder_deps="audiotoolbox"
3050 eac3_at_decoder_select="ac3_parser"
3051 gsm_ms_at_decoder_deps="audiotoolbox"
3052 ilbc_at_decoder_deps="audiotoolbox"
3053 mp1_at_decoder_deps="audiotoolbox"
3054 mp2_at_decoder_deps="audiotoolbox"
3055 mp3_at_decoder_deps="audiotoolbox"
3056 mp1_at_decoder_select="mpegaudioheader"
3057 mp2_at_decoder_select="mpegaudioheader"
3058 mp3_at_decoder_select="mpegaudioheader"
3059 pcm_alaw_at_decoder_deps="audiotoolbox"
3060 pcm_mulaw_at_decoder_deps="audiotoolbox"
3061 qdmc_at_decoder_deps="audiotoolbox"
3062 qdm2_at_decoder_deps="audiotoolbox"
3063 aac_at_encoder_deps="audiotoolbox"
3064 aac_at_encoder_select="audio_frame_queue"
3065 alac_at_encoder_deps="audiotoolbox"
3066 alac_at_encoder_select="audio_frame_queue"
3067 ilbc_at_encoder_deps="audiotoolbox"
3068 ilbc_at_encoder_select="audio_frame_queue"
3069 pcm_alaw_at_encoder_deps="audiotoolbox"
3070 pcm_alaw_at_encoder_select="audio_frame_queue"
3071 pcm_mulaw_at_encoder_deps="audiotoolbox"
3072 pcm_mulaw_at_encoder_select="audio_frame_queue"
3073 chromaprint_muxer_deps="chromaprint"
3074 h264_videotoolbox_encoder_deps="pthreads"
3075 h264_videotoolbox_encoder_select="videotoolbox_encoder"
3076 hevc_videotoolbox_encoder_deps="pthreads"
3077 hevc_videotoolbox_encoder_select="videotoolbox_encoder"
3078 libaom_av1_decoder_deps="libaom"
3079 libaom_av1_encoder_deps="libaom"
3080 libaom_av1_encoder_select="extract_extradata_bsf"
3081 libcelt_decoder_deps="libcelt"
3082 libcodec2_decoder_deps="libcodec2"
3083 libcodec2_encoder_deps="libcodec2"
3084 libdavs2_decoder_deps="libdavs2"
3085 libfdk_aac_decoder_deps="libfdk_aac"
3086 libfdk_aac_encoder_deps="libfdk_aac"
3087 libfdk_aac_encoder_select="audio_frame_queue"
3088 libgme_demuxer_deps="libgme"
3089 libgsm_decoder_deps="libgsm"
3090 libgsm_encoder_deps="libgsm"
3091 libgsm_ms_decoder_deps="libgsm"
3092 libgsm_ms_encoder_deps="libgsm"
3093 libilbc_decoder_deps="libilbc"
3094 libilbc_encoder_deps="libilbc"
3095 libkvazaar_encoder_deps="libkvazaar"
3096 libmodplug_demuxer_deps="libmodplug"
3097 libmp3lame_encoder_deps="libmp3lame"
3098 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
3099 libopencore_amrnb_decoder_deps="libopencore_amrnb"
3100 libopencore_amrnb_encoder_deps="libopencore_amrnb"
3101 libopencore_amrnb_encoder_select="audio_frame_queue"
3102 libopencore_amrwb_decoder_deps="libopencore_amrwb"
3103 libopenh264_decoder_deps="libopenh264"
3104 libopenh264_decoder_select="h264_mp4toannexb_bsf"
3105 libopenh264_encoder_deps="libopenh264"
3106 libopenjpeg_decoder_deps="libopenjpeg"
3107 libopenjpeg_encoder_deps="libopenjpeg"
3108 libopenmpt_demuxer_deps="libopenmpt"
3109 libopus_decoder_deps="libopus"
3110 libopus_encoder_deps="libopus"
3111 libopus_encoder_select="audio_frame_queue"
3112 librsvg_decoder_deps="librsvg"
3113 libshine_encoder_deps="libshine"
3114 libshine_encoder_select="audio_frame_queue"
3115 libspeex_decoder_deps="libspeex"
3116 libspeex_encoder_deps="libspeex"
3117 libspeex_encoder_select="audio_frame_queue"
3118 libtheora_encoder_deps="libtheora"
3119 libtwolame_encoder_deps="libtwolame"
3120 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
3121 libvorbis_decoder_deps="libvorbis"
3122 libvorbis_encoder_deps="libvorbis libvorbisenc"
3123 libvorbis_encoder_select="audio_frame_queue"
3124 libvpx_vp8_decoder_deps="libvpx"
3125 libvpx_vp8_encoder_deps="libvpx"
3126 libvpx_vp9_decoder_deps="libvpx"
3127 libvpx_vp9_encoder_deps="libvpx"
3128 libwavpack_encoder_deps="libwavpack"
3129 libwavpack_encoder_select="audio_frame_queue"
3130 libwebp_encoder_deps="libwebp"
3131 libwebp_anim_encoder_deps="libwebp"
3132 libx262_encoder_deps="libx262"
3133 libx264_encoder_deps="libx264"
3134 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
3135 libx264rgb_encoder_select="libx264_encoder"
3136 libx265_encoder_deps="libx265"
3137 libxavs_encoder_deps="libxavs"
3138 libxvid_encoder_deps="libxvid"
3139 libzvbi_teletext_decoder_deps="libzvbi"
3140 vapoursynth_demuxer_deps="vapoursynth"
3141 videotoolbox_suggest="coreservices"
3142 videotoolbox_deps="corefoundation coremedia corevideo"
3143 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
3144
3145 # demuxers / muxers
3146 ac3_demuxer_select="ac3_parser"
3147 aiff_muxer_select="iso_media"
3148 asf_demuxer_select="riffdec"
3149 asf_o_demuxer_select="riffdec"
3150 asf_muxer_select="riffenc"
3151 asf_stream_muxer_select="asf_muxer"
3152 avi_demuxer_select="iso_media riffdec exif"
3153 avi_muxer_select="riffenc"
3154 caf_demuxer_select="iso_media riffdec"
3155 caf_muxer_select="iso_media"
3156 dash_muxer_select="mp4_muxer"
3157 dash_demuxer_deps="libxml2"
3158 dirac_demuxer_select="dirac_parser"
3159 dts_demuxer_select="dca_parser"
3160 dtshd_demuxer_select="dca_parser"
3161 dv_demuxer_select="dvprofile"
3162 dv_muxer_select="dvprofile"
3163 dxa_demuxer_select="riffdec"
3164 eac3_demuxer_select="ac3_parser"
3165 f4v_muxer_select="mov_muxer"
3166 fifo_muxer_deps="threads"
3167 flac_demuxer_select="flac_parser"
3168 hds_muxer_select="flv_muxer"
3169 hls_muxer_select="mpegts_muxer"
3170 hls_muxer_suggest="gcrypt openssl"
3171 image2_alias_pix_demuxer_select="image2_demuxer"
3172 image2_brender_pix_demuxer_select="image2_demuxer"
3173 ipod_muxer_select="mov_muxer"
3174 ismv_muxer_select="mov_muxer"
3175 matroska_audio_muxer_select="matroska_muxer"
3176 matroska_demuxer_select="iso_media riffdec"
3177 matroska_demuxer_suggest="bzlib lzo zlib"
3178 matroska_muxer_select="iso_media riffenc"
3179 mmf_muxer_select="riffenc"
3180 mov_demuxer_select="iso_media riffdec"
3181 mov_demuxer_suggest="zlib"
3182 mov_muxer_select="iso_media riffenc rtpenc_chain"
3183 mp3_demuxer_select="mpegaudio_parser"
3184 mp3_muxer_select="mpegaudioheader"
3185 mp4_muxer_select="mov_muxer"
3186 mpegts_demuxer_select="iso_media"
3187 mpegts_muxer_select="adts_muxer latm_muxer"
3188 mpegtsraw_demuxer_select="mpegts_demuxer"
3189 mxf_d10_muxer_select="mxf_muxer"
3190 mxf_opatom_muxer_select="mxf_muxer"
3191 nut_muxer_select="riffenc"
3192 nuv_demuxer_select="riffdec"
3193 oga_muxer_select="ogg_muxer"
3194 ogg_demuxer_select="dirac_parse"
3195 ogv_muxer_select="ogg_muxer"
3196 opus_muxer_select="ogg_muxer"
3197 psp_muxer_select="mov_muxer"
3198 rtp_demuxer_select="sdp_demuxer"
3199 rtp_muxer_select="golomb"
3200 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3201 rtsp_demuxer_select="http_protocol rtpdec"
3202 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3203 sap_demuxer_select="sdp_demuxer"
3204 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3205 sdp_demuxer_select="rtpdec"
3206 smoothstreaming_muxer_select="ismv_muxer"
3207 spdif_demuxer_select="adts_header"
3208 spdif_muxer_select="adts_header"
3209 spx_muxer_select="ogg_muxer"
3210 swf_demuxer_suggest="zlib"
3211 tak_demuxer_select="tak_parser"
3212 tg2_muxer_select="mov_muxer"
3213 tgp_muxer_select="mov_muxer"
3214 vobsub_demuxer_select="mpegps_demuxer"
3215 w64_demuxer_select="wav_demuxer"
3216 w64_muxer_select="wav_muxer"
3217 wav_demuxer_select="riffdec"
3218 wav_muxer_select="riffenc"
3219 webm_muxer_select="iso_media riffenc"
3220 webm_dash_manifest_demuxer_select="matroska_demuxer"
3221 wtv_demuxer_select="mpegts_demuxer riffdec"
3222 wtv_muxer_select="mpegts_muxer riffenc"
3223 xmv_demuxer_select="riffdec"
3224 xwma_demuxer_select="riffdec"
3225
3226 # indevs / outdevs
3227 android_camera_indev_deps="android camera2ndk mediandk pthreads"
3228 android_camera_indev_extralibs="-landroid -lcamera2ndk -lmediandk"
3229 alsa_indev_deps="alsa"
3230 alsa_outdev_deps="alsa"
3231 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3232 avfoundation_indev_suggest="coregraphics applicationservices"
3233 avfoundation_indev_extralibs="-framework Foundation"
3234 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3235 caca_outdev_deps="libcaca"
3236 decklink_deps_any="libdl LoadLibrary"
3237 decklink_indev_deps="decklink threads"
3238 decklink_indev_extralibs="-lstdc++"
3239 decklink_outdev_deps="decklink threads"
3240 decklink_outdev_suggest="libklvanc"
3241 decklink_outdev_extralibs="-lstdc++"
3242 libndi_newtek_indev_deps="libndi_newtek"
3243 libndi_newtek_indev_extralibs="-lndi"
3244 libndi_newtek_outdev_deps="libndi_newtek"
3245 libndi_newtek_outdev_extralibs="-lndi"
3246 dshow_indev_deps="IBaseFilter"
3247 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3248 fbdev_indev_deps="linux_fb_h"
3249 fbdev_outdev_deps="linux_fb_h"
3250 gdigrab_indev_deps="CreateDIBSection"
3251 gdigrab_indev_extralibs="-lgdi32"
3252 gdigrab_indev_select="bmp_decoder"
3253 iec61883_indev_deps="libiec61883"
3254 jack_indev_deps="libjack"
3255 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3256 kmsgrab_indev_deps="libdrm"
3257 lavfi_indev_deps="avfilter"
3258 libcdio_indev_deps="libcdio"
3259 libdc1394_indev_deps="libdc1394"
3260 openal_indev_deps="openal"
3261 opengl_outdev_deps="opengl"
3262 oss_indev_deps_any="sys_soundcard_h"
3263 oss_outdev_deps_any="sys_soundcard_h"
3264 pulse_indev_deps="libpulse"
3265 pulse_outdev_deps="libpulse"
3266 sdl2_outdev_deps="sdl2"
3267 sndio_indev_deps="sndio"
3268 sndio_outdev_deps="sndio"
3269 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3270 v4l2_indev_suggest="libv4l2"
3271 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3272 v4l2_outdev_suggest="libv4l2"
3273 vfwcap_indev_deps="vfw32 vfwcap_defines"
3274 xcbgrab_indev_deps="libxcb"
3275 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3276 xv_outdev_deps="xlib"
3277
3278 # protocols
3279 async_protocol_deps="threads"
3280 bluray_protocol_deps="libbluray"
3281 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3282 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl mbedtls"
3283 ffrtmpcrypt_protocol_select="tcp_protocol"
3284 ffrtmphttp_protocol_conflict="librtmp_protocol"
3285 ffrtmphttp_protocol_select="http_protocol"
3286 ftp_protocol_select="tcp_protocol"
3287 gopher_protocol_select="network"
3288 http_protocol_select="tcp_protocol"
3289 http_protocol_suggest="zlib"
3290 httpproxy_protocol_select="tcp_protocol"
3291 httpproxy_protocol_suggest="zlib"
3292 https_protocol_select="tls_protocol"
3293 https_protocol_suggest="zlib"
3294 icecast_protocol_select="http_protocol"
3295 mmsh_protocol_select="http_protocol"
3296 mmst_protocol_select="network"
3297 rtmp_protocol_conflict="librtmp_protocol"
3298 rtmp_protocol_select="tcp_protocol"
3299 rtmp_protocol_suggest="zlib"
3300 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3301 rtmpe_protocol_suggest="zlib"
3302 rtmps_protocol_conflict="librtmp_protocol"
3303 rtmps_protocol_select="tls_protocol"
3304 rtmps_protocol_suggest="zlib"
3305 rtmpt_protocol_select="ffrtmphttp_protocol"
3306 rtmpt_protocol_suggest="zlib"
3307 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3308 rtmpte_protocol_suggest="zlib"
3309 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3310 rtmpts_protocol_suggest="zlib"
3311 rtp_protocol_select="udp_protocol"
3312 schannel_conflict="openssl gnutls libtls mbedtls"
3313 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3314 sctp_protocol_select="network"
3315 securetransport_conflict="openssl gnutls libtls mbedtls"
3316 srtp_protocol_select="rtp_protocol srtp"
3317 tcp_protocol_select="network"
3318 tls_protocol_deps_any="gnutls openssl schannel securetransport libtls mbedtls"
3319 tls_protocol_select="tcp_protocol"
3320 udp_protocol_select="network"
3321 udplite_protocol_select="network"
3322 unix_protocol_deps="sys_un_h"
3323 unix_protocol_select="network"
3324
3325 # external library protocols
3326 librtmp_protocol_deps="librtmp"
3327 librtmpe_protocol_deps="librtmp"
3328 librtmps_protocol_deps="librtmp"
3329 librtmpt_protocol_deps="librtmp"
3330 librtmpte_protocol_deps="librtmp"
3331 libsmbclient_protocol_deps="libsmbclient gplv3"
3332 libsrt_protocol_deps="libsrt"
3333 libsrt_protocol_select="network"
3334 libssh_protocol_deps="libssh"
3335 libtls_conflict="openssl gnutls mbedtls"
3336
3337 # filters
3338 afftfilt_filter_deps="avcodec"
3339 afftfilt_filter_select="fft"
3340 afir_filter_deps="avcodec"
3341 afir_filter_select="fft"
3342 amovie_filter_deps="avcodec avformat"
3343 aresample_filter_deps="swresample"
3344 ass_filter_deps="libass"
3345 atempo_filter_deps="avcodec"
3346 atempo_filter_select="rdft"
3347 avgblur_opencl_filter_deps="opencl"
3348 azmq_filter_deps="libzmq"
3349 blackframe_filter_deps="gpl"
3350 boxblur_filter_deps="gpl"
3351 boxblur_opencl_filter_deps="opencl gpl"
3352 bs2b_filter_deps="libbs2b"
3353 colormatrix_filter_deps="gpl"
3354 convolution_opencl_filter_deps="opencl"
3355 convolve_filter_deps="avcodec"
3356 convolve_filter_select="fft"
3357 coreimage_filter_deps="coreimage appkit"
3358 coreimage_filter_extralibs="-framework OpenGL"
3359 coreimagesrc_filter_deps="coreimage appkit"
3360 coreimagesrc_filter_extralibs="-framework OpenGL"
3361 cover_rect_filter_deps="avcodec avformat gpl"
3362 cropdetect_filter_deps="gpl"
3363 deconvolve_filter_deps="avcodec"
3364 deconvolve_filter_select="fft"
3365 deinterlace_qsv_filter_deps="libmfx"
3366 deinterlace_vaapi_filter_deps="vaapi"
3367 delogo_filter_deps="gpl"
3368 denoise_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3369 deshake_filter_select="pixelutils"
3370 dilation_opencl_filter_deps="opencl"
3371 drawtext_filter_deps="libfreetype"
3372 drawtext_filter_suggest="libfontconfig libfribidi"
3373 elbg_filter_deps="avcodec"
3374 eq_filter_deps="gpl"
3375 erosion_opencl_filter_deps="opencl"
3376 fftfilt_filter_deps="avcodec"
3377 fftfilt_filter_select="rdft"
3378 fftdnoiz_filter_deps="avcodec"
3379 fftdnoiz_filter_select="fft"
3380 find_rect_filter_deps="avcodec avformat gpl"
3381 firequalizer_filter_deps="avcodec"
3382 firequalizer_filter_select="rdft"
3383 flite_filter_deps="libflite"
3384 framerate_filter_select="pixelutils"
3385 frei0r_filter_deps="frei0r libdl"
3386 frei0r_src_filter_deps="frei0r libdl"
3387 fspp_filter_deps="gpl"
3388 geq_filter_deps="gpl"
3389 histeq_filter_deps="gpl"
3390 hqdn3d_filter_deps="gpl"
3391 interlace_filter_deps="gpl"
3392 kerndeint_filter_deps="gpl"
3393 ladspa_filter_deps="ladspa libdl"
3394 lensfun_filter_deps="liblensfun version3"
3395 lv2_filter_deps="lv2"
3396 mcdeint_filter_deps="avcodec gpl"
3397 movie_filter_deps="avcodec avformat"
3398 mpdecimate_filter_deps="gpl"
3399 mpdecimate_filter_select="pixelutils"
3400 mptestsrc_filter_deps="gpl"
3401 negate_filter_deps="lut_filter"
3402 nnedi_filter_deps="gpl"
3403 ocr_filter_deps="libtesseract"
3404 ocv_filter_deps="libopencv"
3405 openclsrc_filter_deps="opencl"
3406 overlay_opencl_filter_deps="opencl"
3407 overlay_qsv_filter_deps="libmfx"
3408 overlay_qsv_filter_select="qsvvpp"
3409 owdenoise_filter_deps="gpl"
3410 pan_filter_deps="swresample"
3411 perspective_filter_deps="gpl"
3412 phase_filter_deps="gpl"
3413 pp7_filter_deps="gpl"
3414 pp_filter_deps="gpl postproc"
3415 prewitt_opencl_filter_deps="opencl"
3416 procamp_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3417 program_opencl_filter_deps="opencl"
3418 pullup_filter_deps="gpl"
3419 removelogo_filter_deps="avcodec avformat swscale"
3420 repeatfields_filter_deps="gpl"
3421 resample_filter_deps="avresample"
3422 roberts_opencl_filter_deps="opencl"
3423 rubberband_filter_deps="librubberband"
3424 sab_filter_deps="gpl swscale"
3425 scale2ref_filter_deps="swscale"
3426 scale_filter_deps="swscale"
3427 scale_qsv_filter_deps="libmfx"
3428 select_filter_select="pixelutils"
3429 sharpness_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3430 showcqt_filter_deps="avcodec avformat swscale"
3431 showcqt_filter_suggest="libfontconfig libfreetype"
3432 showcqt_filter_select="fft"
3433 showfreqs_filter_deps="avcodec"
3434 showfreqs_filter_select="fft"
3435 showspectrum_filter_deps="avcodec"
3436 showspectrum_filter_select="fft"
3437 showspectrumpic_filter_deps="avcodec"
3438 showspectrumpic_filter_select="fft"
3439 signature_filter_deps="gpl avcodec avformat"
3440 smartblur_filter_deps="gpl swscale"
3441 sobel_opencl_filter_deps="opencl"
3442 sofalizer_filter_deps="libmysofa avcodec"
3443 sofalizer_filter_select="fft"
3444 spectrumsynth_filter_deps="avcodec"
3445 spectrumsynth_filter_select="fft"
3446 spp_filter_deps="gpl avcodec"
3447 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3448 sr_filter_deps="avformat swscale"
3449 sr_filter_select="dnn"
3450 stereo3d_filter_deps="gpl"
3451 subtitles_filter_deps="avformat avcodec libass"
3452 super2xsai_filter_deps="gpl"
3453 pixfmts_super2xsai_test_deps="super2xsai_filter"
3454 tinterlace_filter_deps="gpl"
3455 tinterlace_merge_test_deps="tinterlace_filter"
3456 tinterlace_pad_test_deps="tinterlace_filter"
3457 tonemap_filter_deps="const_nan"
3458 tonemap_opencl_filter_deps="opencl const_nan"
3459 unsharp_opencl_filter_deps="opencl"
3460 uspp_filter_deps="gpl avcodec"
3461 vaguedenoiser_filter_deps="gpl"
3462 vidstabdetect_filter_deps="libvidstab"
3463 vidstabtransform_filter_deps="libvidstab"
3464 libvmaf_filter_deps="libvmaf pthreads"
3465 zmq_filter_deps="libzmq"
3466 zoompan_filter_deps="swscale"
3467 zscale_filter_deps="libzimg const_nan"
3468 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3469 vpp_qsv_filter_deps="libmfx"
3470 vpp_qsv_filter_select="qsvvpp"
3471
3472 # examples
3473 avio_dir_cmd_deps="avformat avutil"
3474 avio_reading_deps="avformat avcodec avutil"
3475 decode_audio_example_deps="avcodec avutil"
3476 decode_video_example_deps="avcodec avutil"
3477 demuxing_decoding_example_deps="avcodec avformat avutil"
3478 encode_audio_example_deps="avcodec avutil"
3479 encode_video_example_deps="avcodec avutil"
3480 extract_mvs_example_deps="avcodec avformat avutil"
3481 filter_audio_example_deps="avfilter avutil"
3482 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3483 filtering_video_example_deps="avfilter avcodec avformat avutil"
3484 http_multiclient_example_deps="avformat avutil fork"
3485 hw_decode_example_deps="avcodec avformat avutil"
3486 metadata_example_deps="avformat avutil"
3487 muxing_example_deps="avcodec avformat avutil swscale"
3488 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3489 remuxing_example_deps="avcodec avformat avutil"
3490 resampling_audio_example_deps="avutil swresample"
3491 scaling_video_example_deps="avutil swscale"
3492 transcode_aac_example_deps="avcodec avformat swresample"
3493 transcoding_example_deps="avfilter avcodec avformat avutil"
3494 vaapi_encode_example_deps="avcodec avutil h264_vaapi_encoder"
3495 vaapi_transcode_example_deps="avcodec avformat avutil h264_vaapi_encoder"
3496
3497 # EXTRALIBS_LIST
3498 cpu_init_extralibs="pthreads_extralibs"
3499 cws2fws_extralibs="zlib_extralibs"
3500
3501 # libraries, in any order
3502 avcodec_deps="avutil"
3503 avcodec_suggest="libm"
3504 avcodec_select="null_bsf"
3505 avdevice_deps="avformat avcodec avutil"
3506 avdevice_suggest="libm"
3507 avfilter_deps="avutil"
3508 avfilter_suggest="libm"
3509 avformat_deps="avcodec avutil"
3510 avformat_suggest="libm network zlib"
3511 avresample_deps="avutil"
3512 avresample_suggest="libm"
3513 avutil_suggest="clock_gettime ffnvcodec libm libdrm libmfx opencl user32 vaapi videotoolbox corefoundation corevideo coremedia bcrypt"
3514 postproc_deps="avutil gpl"
3515 postproc_suggest="libm"
3516 swresample_deps="avutil"
3517 swresample_suggest="libm libsoxr"
3518 swscale_deps="avutil"
3519 swscale_suggest="libm"
3520
3521 avcodec_extralibs="pthreads_extralibs iconv_extralibs"
3522 avfilter_extralibs="pthreads_extralibs"
3523 avutil_extralibs="d3d11va_extralibs nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3524
3525 # programs
3526 ffmpeg_deps="avcodec avfilter avformat"
3527 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3528                null_filter
3529                trim_filter"
3530 ffmpeg_suggest="ole32 psapi shell32"
3531 ffplay_deps="avcodec avformat swscale swresample sdl2"
3532 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3533 ffplay_suggest="shell32"
3534 ffprobe_deps="avcodec avformat"
3535 ffprobe_suggest="shell32"
3536
3537 # documentation
3538 podpages_deps="perl"
3539 manpages_deps="perl pod2man"
3540 htmlpages_deps="perl"
3541 htmlpages_deps_any="makeinfo_html texi2html"
3542 txtpages_deps="perl makeinfo"
3543 doc_deps_any="manpages htmlpages podpages txtpages"
3544
3545 # default parameters
3546
3547 logfile="ffbuild/config.log"
3548
3549 # installation paths
3550 prefix_default="/usr/local"
3551 bindir_default='${prefix}/bin'
3552 datadir_default='${prefix}/share/ffmpeg'
3553 docdir_default='${prefix}/share/doc/ffmpeg'
3554 incdir_default='${prefix}/include'
3555 libdir_default='${prefix}/lib'
3556 mandir_default='${prefix}/share/man'
3557
3558 # toolchain
3559 ar_default="ar"
3560 cc_default="gcc"
3561 cxx_default="g++"
3562 host_cc_default="gcc"
3563 doxygen_default="doxygen"
3564 install="install"
3565 ln_s_default="ln -s -f"
3566 nm_default="nm -g"
3567 pkg_config_default=pkg-config
3568 ranlib_default="ranlib"
3569 strip_default="strip"
3570 version_script='--version-script'
3571 objformat="elf32"
3572 x86asmexe_default="nasm"
3573 windres_default="windres"
3574 nvcc_default="nvcc"
3575 nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
3576 striptype="direct"
3577
3578 # OS
3579 target_os_default=$(tolower $(uname -s))
3580 host_os=$target_os_default
3581
3582 # machine
3583 if test "$target_os_default" = aix; then
3584     arch_default=$(uname -p)
3585     strip_default="strip -X32_64"
3586 else
3587     arch_default=$(uname -m)
3588 fi
3589 cpu="generic"
3590 intrinsics="none"
3591
3592 # configurable options
3593 enable $PROGRAM_LIST
3594 enable $DOCUMENT_LIST
3595 enable $EXAMPLE_LIST
3596 enable $(filter_out avresample $LIBRARY_LIST)
3597 enable stripping
3598
3599 enable asm
3600 enable debug
3601 enable doc
3602 enable faan faandct faanidct
3603 enable optimizations
3604 enable runtime_cpudetect
3605 enable safe_bitstream_reader
3606 enable static
3607 enable swscale_alpha
3608 enable valgrind_backtrace
3609
3610 sws_max_filter_size_default=256
3611 set_default sws_max_filter_size
3612
3613 # internal components are enabled by default
3614 enable $EXTRALIBS_LIST
3615
3616 # Avoid external, non-system, libraries getting enabled by dependency resolution
3617 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3618
3619 # build settings
3620 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3621 LIBPREF="lib"
3622 LIBSUF=".a"
3623 FULLNAME='$(NAME)$(BUILDSUF)'
3624 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3625 SLIBPREF="lib"
3626 SLIBSUF=".so"
3627 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3628 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3629 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3630 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3631 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3632 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3633 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3634
3635 asflags_filter=echo
3636 cflags_filter=echo
3637 ldflags_filter=echo
3638
3639 AS_C='-c'
3640 AS_O='-o $@'
3641 CC_C='-c'
3642 CC_E='-E -o $@'
3643 CC_O='-o $@'
3644 CXX_C='-c'
3645 CXX_O='-o $@'
3646 OBJCC_C='-c'
3647 OBJCC_E='-E -o $@'
3648 OBJCC_O='-o $@'
3649 X86ASM_O='-o $@'
3650 LD_O='-o $@'
3651 LD_LIB='-l%'
3652 LD_PATH='-L'
3653 HOSTCC_C='-c'
3654 HOSTCC_E='-E -o $@'
3655 HOSTCC_O='-o $@'
3656 HOSTLD_O='-o $@'
3657 NVCC_C='-c'
3658 NVCC_O='-o $@'
3659
3660 host_extralibs='-lm'
3661 host_cflags_filter=echo
3662 host_ldflags_filter=echo
3663
3664 target_path='$(CURDIR)'
3665
3666 # since the object filename is not given with the -MM flag, the compiler
3667 # is only able to print the basename, and we must add the path ourselves
3668 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3669 DEPFLAGS='-MM'
3670
3671 mkdir -p ffbuild
3672
3673 # find source path
3674 if test -f configure; then
3675     source_path=.
3676 else
3677     source_path=$(cd $(dirname "$0"); pwd)
3678     case "$source_path" in
3679         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3680     esac
3681     test -e "$source_path/config.h" &&
3682         die "Out of tree builds are impossible with config.h in source dir."
3683 fi
3684
3685 for v in "$@"; do
3686     r=${v#*=}
3687     l=${v%"$r"}
3688     r=$(sh_quote "$r")
3689     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3690 done
3691
3692 find_things_extern(){
3693     thing=$1
3694     pattern=$2
3695     file=$source_path/$3
3696     out=${4:-$thing}
3697     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$out/p" "$file"
3698 }
3699
3700 find_filters_extern(){
3701     file=$source_path/$1
3702     #sed -n "s/^extern AVFilter ff_\([avfsinkrc]\{2,5\}\)_\(\w\+\);/\2_filter/p" $file
3703     sed -E -n "s/^extern AVFilter ff_([avfsinkrc]{2,5})_([a-zA-Z0-9_]+);/\2_filter/p" $file
3704 }
3705
3706 FILTER_LIST=$(find_filters_extern libavfilter/allfilters.c)
3707 OUTDEV_LIST=$(find_things_extern muxer AVOutputFormat libavdevice/alldevices.c outdev)
3708 INDEV_LIST=$(find_things_extern demuxer AVInputFormat libavdevice/alldevices.c indev)
3709 MUXER_LIST=$(find_things_extern muxer AVOutputFormat libavformat/allformats.c)
3710 DEMUXER_LIST=$(find_things_extern demuxer AVInputFormat libavformat/allformats.c)
3711 ENCODER_LIST=$(find_things_extern encoder AVCodec libavcodec/allcodecs.c)
3712 DECODER_LIST=$(find_things_extern decoder AVCodec libavcodec/allcodecs.c)
3713 CODEC_LIST="
3714     $ENCODER_LIST
3715     $DECODER_LIST
3716 "
3717 PARSER_LIST=$(find_things_extern parser AVCodecParser libavcodec/parsers.c)
3718 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3719 HWACCEL_LIST=$(find_things_extern hwaccel AVHWAccel libavcodec/hwaccels.h)
3720 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3721
3722 AVCODEC_COMPONENTS_LIST="
3723     $BSF_LIST
3724     $DECODER_LIST
3725     $ENCODER_LIST
3726     $HWACCEL_LIST
3727     $PARSER_LIST
3728 "
3729
3730 AVDEVICE_COMPONENTS_LIST="
3731     $INDEV_LIST
3732     $OUTDEV_LIST
3733 "
3734
3735 AVFILTER_COMPONENTS_LIST="
3736     $FILTER_LIST
3737 "
3738
3739 AVFORMAT_COMPONENTS_LIST="
3740     $DEMUXER_LIST
3741     $MUXER_LIST
3742     $PROTOCOL_LIST
3743 "
3744
3745 ALL_COMPONENTS="
3746     $AVCODEC_COMPONENTS_LIST
3747     $AVDEVICE_COMPONENTS_LIST
3748     $AVFILTER_COMPONENTS_LIST
3749     $AVFORMAT_COMPONENTS_LIST
3750 "
3751
3752 for n in $COMPONENT_LIST; do
3753     v=$(toupper ${n%s})_LIST
3754     eval enable \$$v
3755     eval ${n}_if_any="\$$v"
3756 done
3757
3758 enable $ARCH_EXT_LIST
3759
3760 die_unknown(){
3761     echo "Unknown option \"$1\"."
3762     echo "See $0 --help for available options."
3763     exit 1
3764 }
3765
3766 print_in_columns() {
3767     cols=$(expr $ncols / 24)
3768     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3769 }
3770
3771 show_list() {
3772     suffix=_$1
3773     shift
3774     echo $* | sed s/$suffix//g | print_in_columns
3775     exit 0
3776 }
3777
3778 rand_list(){
3779     IFS=', '
3780     set -- $*
3781     unset IFS
3782     for thing; do
3783         comp=${thing%:*}
3784         prob=${thing#$comp}
3785         prob=${prob#:}
3786         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3787         echo "prob ${prob:-0.5}"
3788         printf '%s\n' $comp
3789     done
3790 }
3791
3792 do_random(){
3793     action=$1
3794     shift
3795     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3796     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3797 }
3798
3799 for opt do
3800     optval="${opt#*=}"
3801     case "$opt" in
3802         --extra-ldflags=*)
3803             add_ldflags $optval
3804         ;;
3805         --extra-ldexeflags=*)
3806             add_ldexeflags $optval
3807         ;;
3808         --extra-ldsoflags=*)
3809             add_ldsoflags $optval
3810         ;;
3811         --extra-ldlibflags=*)
3812             warn "The --extra-ldlibflags option is only provided for compatibility and will be\n"\
3813                  "removed in the future. Use --extra-ldsoflags instead."
3814             add_ldsoflags $optval
3815         ;;
3816         --extra-libs=*)
3817             add_extralibs $optval
3818         ;;
3819         --disable-devices)
3820             disable $INDEV_LIST $OUTDEV_LIST
3821         ;;
3822         --enable-debug=*)
3823             debuglevel="$optval"
3824         ;;
3825         --disable-programs)
3826             disable $PROGRAM_LIST
3827         ;;
3828         --disable-everything)
3829             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3830         ;;
3831         --disable-all)
3832             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3833             disable $LIBRARY_LIST $PROGRAM_LIST doc
3834             enable avutil
3835         ;;
3836         --enable-random|--disable-random)
3837             action=${opt%%-random}
3838             do_random ${action#--} $COMPONENT_LIST
3839         ;;
3840         --enable-random=*|--disable-random=*)
3841             action=${opt%%-random=*}
3842             do_random ${action#--} $optval
3843         ;;
3844         --enable-sdl)
3845             enable sdl2
3846         ;;
3847         --enable-*=*|--disable-*=*)
3848             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3849             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3850             eval list=\$$(toupper $thing)_LIST
3851             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3852             list=$(filter "$name" $list)
3853             [ "$list" = "" ] && warn "Option $opt did not match anything"
3854             $action $list
3855         ;;
3856         --enable-yasm|--disable-yasm)
3857             warn "The ${opt} option is only provided for compatibility and will be\n"\
3858                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3859             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3860         ;;
3861         --yasmexe=*)
3862             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3863                  "removed in the future. Use --x86asmexe instead."
3864             x86asmexe="$optval"
3865         ;;
3866         --enable-?*|--disable-?*)
3867             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3868             if is_in $option $COMPONENT_LIST; then
3869                 test $action = disable && action=unset
3870                 eval $action \$$(toupper ${option%s})_LIST
3871             elif is_in $option $CMDLINE_SELECT; then
3872                 $action $option
3873             else
3874                 die_unknown $opt
3875             fi
3876         ;;
3877         --list-*)
3878             NAME="${opt#--list-}"
3879             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3880             NAME=${NAME%s}
3881             eval show_list $NAME \$$(toupper $NAME)_LIST
3882         ;;
3883         --help|-h) show_help
3884         ;;
3885         --quiet|-q) quiet=yes
3886         ;;
3887         --fatal-warnings) enable fatal_warnings
3888         ;;
3889         --libfuzzer=*)
3890             libfuzzer_path="$optval"
3891         ;;
3892         *)
3893             optname="${opt%%=*}"
3894             optname="${optname#--}"
3895             optname=$(echo "$optname" | sed 's/-/_/g')
3896             if is_in $optname $CMDLINE_SET; then
3897                 eval $optname='$optval'
3898             elif is_in $optname $CMDLINE_APPEND; then
3899                 append $optname "$optval"
3900             else
3901                 die_unknown $opt
3902             fi
3903         ;;
3904     esac
3905 done
3906
3907 for e in $env; do
3908     eval "export $e"
3909 done
3910
3911 if disabled autodetect; then
3912
3913     # Unless iconv is explicitely disabled by the user, we still want to probe
3914     # for the iconv from the libc.
3915     disabled iconv || enable libc_iconv
3916
3917     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3918     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3919 fi
3920 # Mark specifically enabled, but normally autodetected libraries as requested.
3921 for lib in $AUTODETECT_LIBS; do
3922     enabled $lib && request $lib
3923 done
3924 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
3925 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3926 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3927
3928 disabled logging && logfile=/dev/null
3929
3930 # command line configuration sanity checks
3931
3932 # we need to build at least one lib type
3933 if ! enabled_any static shared; then
3934     cat <<EOF
3935 At least one library type must be built.
3936 Specify --enable-static to build the static libraries or --enable-shared to
3937 build the shared libraries as well. To only build the shared libraries specify
3938 --disable-static in addition to --enable-shared.
3939 EOF
3940     exit 1
3941 fi
3942
3943 die_license_disabled() {
3944     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3945 }
3946
3947 die_license_disabled_gpl() {
3948     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3949 }
3950
3951 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3952 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3953
3954 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3955 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3956
3957 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3958
3959 if enabled nonfree; then
3960     license="nonfree and unredistributable"
3961 elif enabled gplv3; then
3962     license="GPL version 3 or later"
3963 elif enabled lgplv3; then
3964     license="LGPL version 3 or later"
3965 elif enabled gpl; then
3966     license="GPL version 2 or later"
3967 else
3968     license="LGPL version 2.1 or later"
3969 fi
3970
3971 enabled_all gnutls openssl &&
3972     die "GnuTLS and OpenSSL must not be enabled at the same time."
3973
3974 enabled_all gnutls mbedtls &&
3975     die "GnuTLS and mbedTLS must not be enabled at the same time."
3976
3977 enabled_all openssl mbedtls &&
3978     die "OpenSSL and mbedTLS must not be enabled at the same time."
3979
3980 # Disable all the library-specific components if the library itself
3981 # is disabled, see AVCODEC_LIST and following _LIST variables.
3982
3983 disable_components(){
3984     disabled ${1} && disable $(
3985         eval components="\$$(toupper ${1})_COMPONENTS"
3986         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3987     )
3988 }
3989
3990 map 'disable_components $v' $LIBRARY_LIST
3991
3992 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3993 set >> $logfile
3994
3995 test -n "$valgrind" && toolchain="valgrind-memcheck"
3996
3997 enabled ossfuzz && ! echo $CFLAGS | grep -q -- "-fsanitize="  && ! echo $CFLAGS | grep -q -- "-fcoverage-mapping" &&{
3998     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
3999     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
4000 }
4001
4002 case "$toolchain" in
4003     *-asan)
4004         cc_default="${toolchain%-asan}"
4005         add_cflags  -fsanitize=address
4006         add_ldflags -fsanitize=address
4007     ;;
4008     *-msan)
4009         cc_default="${toolchain%-msan}"
4010         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
4011         add_ldflags -fsanitize=memory
4012     ;;
4013     *-tsan)
4014         cc_default="${toolchain%-tsan}"
4015         add_cflags  -fsanitize=thread
4016         add_ldflags -fsanitize=thread
4017         case "$toolchain" in
4018             gcc-tsan)
4019                 add_cflags  -fPIC
4020                 add_ldflags -fPIC
4021                 ;;
4022         esac
4023     ;;
4024     *-usan)
4025         cc_default="${toolchain%-usan}"
4026         add_cflags  -fsanitize=undefined
4027         add_ldflags -fsanitize=undefined
4028     ;;
4029     valgrind-*)
4030         target_exec_default="valgrind"
4031         case "$toolchain" in
4032             valgrind-massif)
4033                 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"
4034                 ;;
4035             valgrind-memcheck)
4036                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
4037                 ;;
4038         esac
4039     ;;
4040     msvc)
4041         # Check whether the current MSVC version needs the C99 converter.
4042         # From MSVC 2013 (compiler major version 18) onwards, it does actually
4043         # support enough of C99 to build ffmpeg. Default to the new
4044         # behaviour if the regexp was unable to match anything, since this
4045         # successfully parses the version number of existing supported
4046         # versions that require the converter (MSVC 2010 and 2012).
4047         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
4048         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
4049             cc_default="cl"
4050             cxx_default="cl"
4051         else
4052             die "Unsupported MSVC version (2013 or newer required)"
4053         fi
4054         ld_default="$source_path/compat/windows/mslink"
4055         nm_default="dumpbin -symbols"
4056         ar_default="lib"
4057         case "$arch" in
4058         aarch64|arm64)
4059             as_default="armasm64"
4060             ;;
4061         arm*)
4062             as_default="armasm"
4063             ;;
4064         esac
4065         target_os_default="win32"
4066         # Use a relative path for TMPDIR. This makes sure all the
4067         # ffconf temp files are written with a relative path, avoiding
4068         # issues with msys/win32 path conversion for MSVC parameters
4069         # such as -Fo<file> or -out:<file>.
4070         TMPDIR=.
4071     ;;
4072     icl)
4073         cc_default="icl"
4074         ld_default="xilink"
4075         nm_default="dumpbin -symbols"
4076         ar_default="xilib"
4077         target_os_default="win32"
4078         TMPDIR=.
4079     ;;
4080     gcov)
4081         add_cflags  -fprofile-arcs -ftest-coverage
4082         add_ldflags -fprofile-arcs -ftest-coverage
4083     ;;
4084     llvm-cov)
4085         add_cflags -fprofile-arcs -ftest-coverage
4086         add_ldflags --coverage
4087     ;;
4088     hardened)
4089         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
4090         add_cflags   -fno-strict-overflow -fstack-protector-all
4091         add_ldflags  -Wl,-z,relro -Wl,-z,now
4092         add_cflags   -fPIE
4093         add_ldexeflags -fPIE -pie
4094     ;;
4095     ?*)
4096         die "Unknown toolchain $toolchain"
4097     ;;
4098 esac
4099
4100 if test -n "$cross_prefix"; then
4101     test -n "$arch" && test -n "$target_os" ||
4102         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
4103     enable cross_compile
4104 fi
4105
4106 ar_default="${cross_prefix}${ar_default}"
4107 cc_default="${cross_prefix}${cc_default}"
4108 cxx_default="${cross_prefix}${cxx_default}"
4109 nm_default="${cross_prefix}${nm_default}"
4110 pkg_config_default="${cross_prefix}${pkg_config_default}"
4111 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
4112     ranlib_default="${cross_prefix}${ranlib_default} -D"
4113 else
4114     ranlib_default="${cross_prefix}${ranlib_default}"
4115 fi
4116 strip_default="${cross_prefix}${strip_default}"
4117 windres_default="${cross_prefix}${windres_default}"
4118
4119 sysinclude_default="${sysroot}/usr/include"
4120
4121 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
4122     target_exec target_os x86asmexe nvcc
4123 enabled cross_compile || host_cc_default=$cc
4124 set_default host_cc
4125
4126 pkg_config_fail_message=""
4127 if ! $pkg_config --version >/dev/null 2>&1; then
4128     warn "$pkg_config not found, library detection may fail."
4129     pkg_config=false
4130 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
4131     pkg_config_fail_message="
4132 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
4133 fi
4134
4135 if test $doxygen != $doxygen_default && \
4136   ! $doxygen --version >/dev/null 2>&1; then
4137     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
4138 fi
4139
4140 exesuf() {
4141     case $1 in
4142         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
4143     esac
4144 }
4145
4146 EXESUF=$(exesuf $target_os)
4147 HOSTEXESUF=$(exesuf $host_os)
4148
4149 # set temporary file name
4150 : ${TMPDIR:=$TEMPDIR}
4151 : ${TMPDIR:=$TMP}
4152 : ${TMPDIR:=/tmp}
4153
4154 if [ -n "$tempprefix" ] ; then
4155     mktemp(){
4156         tmpname="$tempprefix.${HOSTNAME}.${UID}"
4157         echo "$tmpname"
4158         mkdir "$tmpname"
4159     }
4160 elif ! test_cmd mktemp -u XXXXXX; then
4161     # simple replacement for missing mktemp
4162     # NOT SAFE FOR GENERAL USE
4163     mktemp(){
4164         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
4165         echo "$tmpname"
4166         mkdir "$tmpname"
4167     }
4168 fi
4169
4170 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
4171     die "Unable to create temporary directory in $TMPDIR."
4172
4173 tmpfile(){
4174     tmp="${FFTMPDIR}/test"$2
4175     (set -C; exec > $tmp) 2> /dev/null ||
4176         die "Unable to create temporary file in $FFTMPDIR."
4177     eval $1=$tmp
4178 }
4179
4180 trap 'rm -rf -- "$FFTMPDIR"' EXIT
4181 trap 'exit 2' INT
4182
4183 tmpfile TMPASM .asm
4184 tmpfile TMPC   .c
4185 tmpfile TMPCPP .cpp
4186 tmpfile TMPE   $EXESUF
4187 tmpfile TMPH   .h
4188 tmpfile TMPM   .m
4189 tmpfile TMPO   .o
4190 tmpfile TMPS   .S
4191 tmpfile TMPSH  .sh
4192 tmpfile TMPV   .ver
4193
4194 unset -f mktemp
4195
4196 chmod +x $TMPE
4197
4198 # make sure we can execute files in $TMPDIR
4199 cat > $TMPSH 2>> $logfile <<EOF
4200 #! /bin/sh
4201 EOF
4202 chmod +x $TMPSH >> $logfile 2>&1
4203 if ! $TMPSH >> $logfile 2>&1; then
4204     cat <<EOF
4205 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
4206 variable to another directory and make sure that it is not mounted noexec.
4207 EOF
4208     die "Sanity test failed."
4209 fi
4210
4211 armasm_flags(){
4212     for flag; do
4213         case $flag in
4214             # Filter out MSVC cl.exe options from cflags that shouldn't
4215             # be passed to gas-preprocessor
4216             -M[TD]*)                                            ;;
4217             *)                  echo $flag                      ;;
4218         esac
4219    done
4220 }
4221
4222 cparser_flags(){
4223     for flag; do
4224         case $flag in
4225             -Wno-switch)             echo -Wno-switch-enum ;;
4226             -Wno-format-zero-length) ;;
4227             -Wdisabled-optimization) ;;
4228             -Wno-pointer-sign)       echo -Wno-other ;;
4229             *)                       echo $flag ;;
4230         esac
4231     done
4232 }
4233
4234 msvc_common_flags(){
4235     for flag; do
4236         case $flag in
4237             # In addition to specifying certain flags under the compiler
4238             # specific filters, they must be specified here as well or else the
4239             # generic catch all at the bottom will print the original flag.
4240             -Wall)                ;;
4241             -Wextra)              ;;
4242             -std=c99)             ;;
4243             # Common flags
4244             -fomit-frame-pointer) ;;
4245             -g)                   echo -Z7 ;;
4246             -fno-math-errno)      ;;
4247             -fno-common)          ;;
4248             -fno-signed-zeros)    ;;
4249             -fPIC)                ;;
4250             -mthumb)              ;;
4251             -march=*)             ;;
4252             -lz)                  echo zlib.lib ;;
4253             -lx264)               echo libx264.lib ;;
4254             -lstdc++)             ;;
4255             -l*)                  echo ${flag#-l}.lib ;;
4256             -LARGEADDRESSAWARE)   echo $flag ;;
4257             -L*)                  echo -libpath:${flag#-L} ;;
4258             *)                    echo $flag ;;
4259         esac
4260     done
4261 }
4262
4263 msvc_flags(){
4264     msvc_common_flags "$@"
4265     for flag; do
4266         case $flag in
4267             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4268                                        -wd4554 ;;
4269             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4270                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4271                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4272                                        -wd4307 \
4273                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4274         esac
4275     done
4276 }
4277
4278 icl_flags(){
4279     msvc_common_flags "$@"
4280     for flag; do
4281         case $flag in
4282             # Despite what Intel's documentation says -Wall, which is supported
4283             # on Windows, does enable remarks so disable them here.
4284             -Wall)                echo $flag -Qdiag-disable:remark ;;
4285             -std=c99)             echo -Qstd=c99 ;;
4286             -flto)                echo -ipo ;;
4287         esac
4288     done
4289 }
4290
4291 icc_flags(){
4292     for flag; do
4293         case $flag in
4294             -flto)                echo -ipo ;;
4295             *)                    echo $flag ;;
4296         esac
4297     done
4298 }
4299
4300 suncc_flags(){
4301     for flag; do
4302         case $flag in
4303             -march=*|-mcpu=*)
4304                 case "${flag#*=}" in
4305                     native)                   echo -xtarget=native       ;;
4306                     v9|niagara)               echo -xarch=sparc          ;;
4307                     ultrasparc)               echo -xarch=sparcvis       ;;
4308                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4309                     i586|pentium)             echo -xchip=pentium        ;;
4310                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4311                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4312                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4313                     pentium4*)          echo -xtarget=pentium4           ;;
4314                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4315                     *-sse3)             echo -xarch=sse3                 ;;
4316                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4317                     bonnell)                   echo -xarch=ssse3         ;;
4318                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4319                     westmere)                  echo -xtarget=westmere    ;;
4320                     silvermont)                echo -xarch=sse4_2        ;;
4321                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4322                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4323                                                echo -xarch=avx           ;;
4324                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4325                     btver1)                    echo -xarch=amdsse4a      ;;
4326                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4327                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4328                     k8|opteron|athlon64|athlon-fx)
4329                                                echo -xarch=sse2a         ;;
4330                     athlon*)                   echo -xarch=pentium_proa  ;;
4331                 esac
4332                 ;;
4333             -std=c99)             echo -xc99              ;;
4334             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4335             -fPIC)                echo -KPIC -xcode=pic32 ;;
4336             -W*,*)                echo $flag              ;;
4337             -f*-*|-W*|-mimpure-text)                      ;;
4338             -shared)              echo -G                 ;;
4339             *)                    echo $flag              ;;
4340         esac
4341     done
4342 }
4343
4344 probe_cc(){
4345     pfx=$1
4346     _cc=$2
4347     first=$3
4348
4349     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4350     unset _ld_o _ldflags _ld_lib _ld_path
4351     unset _depflags _DEPCMD _DEPFLAGS
4352     _flags_filter=echo
4353
4354     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4355         true # no-op to avoid reading stdin in following checks
4356     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4357         _type=llvm_gcc
4358         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4359         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4360         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4361         _cflags_speed='-O3'
4362         _cflags_size='-Os'
4363     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4364         _type=gcc
4365         gcc_version=$($_cc --version | head -n1)
4366         gcc_basever=$($_cc -dumpversion)
4367         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4368         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4369         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4370         case $gcc_basever in
4371             2) ;;
4372             2.*) ;;
4373             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4374         esac
4375         if [ "$first" = true ]; then
4376             case $gcc_basever in
4377                 4.2*)
4378                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4379             esac
4380         fi
4381         _cflags_speed='-O3'
4382         _cflags_size='-Os'
4383     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4384         _type=icc
4385         _ident=$($_cc --version | head -n1)
4386         _depflags='-MMD'
4387         _cflags_speed='-O3'
4388         _cflags_size='-Os'
4389         _cflags_noopt='-O1'
4390         _flags_filter=icc_flags
4391     elif $_cc -v 2>&1 | grep -q xlc; then
4392         _type=xlc
4393         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4394         _cflags_speed='-O5'
4395         _cflags_size='-O5 -qcompact'
4396     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4397         test -d "$sysroot" || die "No valid sysroot specified."
4398         _type=armcc
4399         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4400         armcc_conf="$PWD/armcc.conf"
4401         $_cc --arm_linux_configure                 \
4402              --arm_linux_config_file="$armcc_conf" \
4403              --configure_sysroot="$sysroot"        \
4404              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4405              die "Error creating armcc configuration file."
4406         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4407         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4408         as_default="${cross_prefix}gcc"
4409         _depflags='-MMD'
4410         _cflags_speed='-O3'
4411         _cflags_size='-Os'
4412     elif $_cc -v 2>&1 | grep -q clang && ! $_cc -? > /dev/null 2>&1; then
4413         _type=clang
4414         _ident=$($_cc --version 2>/dev/null | head -n1)
4415         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4416         _cflags_speed='-O3'
4417         _cflags_size='-Oz'
4418     elif $_cc -V 2>&1 | grep -q Sun; then
4419         _type=suncc
4420         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4421         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4422         _DEPFLAGS='-xM1 -xc99'
4423         _ldflags='-std=c99'
4424         _cflags_speed='-O5'
4425         _cflags_size='-O5 -xspace'
4426         _flags_filter=suncc_flags
4427     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4428         _type=pathscale
4429         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4430         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4431         _cflags_speed='-O2'
4432         _cflags_size='-Os'
4433         _flags_filter='filter_out -Wdisabled-optimization'
4434     elif $_cc -v 2>&1 | grep -q Open64; then
4435         _type=open64
4436         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4437         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4438         _cflags_speed='-O2'
4439         _cflags_size='-Os'
4440         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4441     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4442         _type=armasm
4443         _ident=$($_cc | head -n1)
4444         # 4509: "This form of conditional instruction is deprecated"
4445         _flags="-nologo -ignore 4509"
4446         _flags_filter=armasm_flags
4447     elif $_cc 2>&1 | grep -q Intel; then
4448         _type=icl
4449         _ident=$($_cc 2>&1 | head -n1)
4450         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4451         # Not only is O3 broken on 13.x+ but it is slower on all previous
4452         # versions (tested) as well.
4453         _cflags_speed="-O2"
4454         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4455         if $_cc 2>&1 | grep -q Linker; then
4456             _ld_o='-out:$@'
4457         else
4458             _ld_o='-Fe$@'
4459         fi
4460         _cc_o='-Fo$@'
4461         _cc_e='-P'
4462         _flags_filter=icl_flags
4463         _ld_lib='lib%.a'
4464         _ld_path='-libpath:'
4465         # -Qdiag-error to make icl error when seeing certain unknown arguments
4466         _flags='-nologo -Qdiag-error:4044,10157'
4467         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4468         # with MSVC which enables it by default.
4469         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4470         disable stripping
4471     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4472         # lld can emulate multiple different linkers; in ms link.exe mode,
4473         # the -? parameter gives the help output which contains an identifyable
4474         # string, while it gives an error in other modes.
4475         _type=lld-link
4476         # The link.exe mode doesn't have a switch for getting the version,
4477         # but we can force it back to gnu mode and get the version from there.
4478         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4479         _ld_o='-out:$@'
4480         _flags_filter=msvc_flags
4481         _ld_lib='lib%.a'
4482         _ld_path='-libpath:'
4483     elif $_cc -nologo- 2>&1 | grep -q Microsoft || { $_cc -v 2>&1 | grep -q clang && $_cc -? > /dev/null 2>&1; }; then
4484         _type=msvc
4485         _ident=$($_cc 2>&1 | head -n1 | tr -d '\r')
4486         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4487         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4488         _cflags_speed="-O2"
4489         _cflags_size="-O1"
4490         _cflags_noopt="-O1"
4491         if $_cc -nologo- 2>&1 | grep -q Linker; then
4492             _ld_o='-out:$@'
4493         else
4494             _ld_o='-Fe$@'
4495         fi
4496         _cc_o='-Fo$@'
4497         _cc_e='-P -Fi$@'
4498         _flags_filter=msvc_flags
4499         _ld_lib='lib%.a'
4500         _ld_path='-libpath:'
4501         _flags='-nologo'
4502         disable stripping
4503     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4504         _type=cparser
4505         _ident=$($_cc --version | head -n1)
4506         _depflags='-MMD'
4507         _cflags_speed='-O4'
4508         _cflags_size='-O2'
4509         _flags_filter=cparser_flags
4510     fi
4511
4512     eval ${pfx}_type=\$_type
4513     eval ${pfx}_ident=\$_ident
4514 }
4515
4516 set_ccvars(){
4517     eval ${1}_C=\${_cc_c-\${${1}_C}}
4518     eval ${1}_E=\${_cc_e-\${${1}_E}}
4519     eval ${1}_O=\${_cc_o-\${${1}_O}}
4520
4521     if [ -n "$_depflags" ]; then
4522         eval ${1}_DEPFLAGS=\$_depflags
4523     else
4524         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4525         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4526         eval DEP${1}FLAGS=\$_flags
4527     fi
4528 }
4529
4530 probe_cc cc "$cc" "true"
4531 cflags_filter=$_flags_filter
4532 cflags_speed=$_cflags_speed
4533 cflags_size=$_cflags_size
4534 cflags_noopt=$_cflags_noopt
4535 add_cflags $_flags $_cflags
4536 cc_ldflags=$_ldflags
4537 set_ccvars CC
4538 set_ccvars CXX
4539
4540 probe_cc hostcc "$host_cc"
4541 host_cflags_filter=$_flags_filter
4542 host_cflags_speed=$_cflags_speed
4543 add_host_cflags  $_flags $_cflags
4544 set_ccvars HOSTCC
4545
4546 test -n "$cc_type" && enable $cc_type ||
4547     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4548
4549 : ${as_default:=$cc}
4550 : ${objcc_default:=$cc}
4551 : ${dep_cc_default:=$cc}
4552 : ${ld_default:=$cc}
4553 : ${host_ld_default:=$host_cc}
4554 set_default ar as objcc dep_cc ld ln_s host_ld windres
4555
4556 probe_cc as "$as"
4557 asflags_filter=$_flags_filter
4558 add_asflags $_flags $_cflags
4559 set_ccvars AS
4560
4561 probe_cc objcc "$objcc"
4562 objcflags_filter=$_flags_filter
4563 add_objcflags $_flags $_cflags
4564 set_ccvars OBJC
4565
4566 probe_cc ld "$ld"
4567 ldflags_filter=$_flags_filter
4568 add_ldflags $_flags $_ldflags
4569 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4570 LD_O=${_ld_o-$LD_O}
4571 LD_LIB=${_ld_lib-$LD_LIB}
4572 LD_PATH=${_ld_path-$LD_PATH}
4573
4574 probe_cc hostld "$host_ld"
4575 host_ldflags_filter=$_flags_filter
4576 add_host_ldflags $_flags $_ldflags
4577 HOSTLD_O=${_ld_o-$HOSTLD_O}
4578
4579 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4580     probe_cc depcc "$dep_cc"
4581     CCDEP=${_DEPCMD:-$DEPCMD}
4582     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4583     DEPCCFLAGS=$_flags
4584 fi
4585
4586 if $ar 2>&1 | grep -q Microsoft; then
4587     arflags="-nologo"
4588     ar_o='-out:$@'
4589 elif $ar 2>&1 | grep -q "\[D\] "; then
4590     arflags="rcD"
4591     ar_o='$@'
4592 else
4593     arflags="rc"
4594     ar_o='$@'
4595 fi
4596
4597 add_cflags $extra_cflags
4598 add_cxxflags $extra_cxxflags
4599 add_objcflags $extra_objcflags
4600 add_asflags $extra_cflags
4601
4602 if test -n "$sysroot"; then
4603     case "$cc_type" in
4604         gcc|llvm_gcc|clang)
4605             add_cppflags --sysroot="$sysroot"
4606             add_ldflags --sysroot="$sysroot"
4607         ;;
4608     esac
4609 fi
4610
4611 if test "$cpu" = host; then
4612     enabled cross_compile &&
4613         die "--cpu=host makes no sense when cross-compiling."
4614
4615     case "$cc_type" in
4616         gcc|llvm_gcc)
4617             check_native(){
4618                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4619                 sed -n "/cc1.*$1=/{
4620                             s/.*$1=\\([^ ]*\\).*/\\1/
4621                             p
4622                             q
4623                         }" $TMPE
4624             }
4625             cpu=$(check_native -march || check_native -mcpu)
4626         ;;
4627         clang)
4628             check_native(){
4629                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4630                 sed -n "/cc1.*-target-cpu /{
4631                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4632                             p
4633                             q
4634                         }" $TMPE
4635             }
4636             cpu=$(check_native -march)
4637         ;;
4638     esac
4639
4640     test "${cpu:-host}" = host &&
4641         die "--cpu=host not supported with compiler $cc"
4642 fi
4643
4644 # Deal with common $arch aliases
4645 case "$arch" in
4646     aarch64|arm64)
4647         arch="aarch64"
4648     ;;
4649     arm*|iPad*|iPhone*)
4650         arch="arm"
4651     ;;
4652     mips*|IP*)
4653         case "$arch" in
4654         *el)
4655             add_cppflags -EL
4656             add_ldflags -EL
4657         ;;
4658         *eb)
4659             add_cppflags -EB
4660             add_ldflags -EB
4661         ;;
4662         esac
4663         arch="mips"
4664     ;;
4665     parisc*|hppa*)
4666         arch="parisc"
4667     ;;
4668     "Power Macintosh"|ppc*|powerpc*)
4669         arch="ppc"
4670     ;;
4671     s390|s390x)
4672         arch="s390"
4673     ;;
4674     sh4|sh)
4675         arch="sh4"
4676     ;;
4677     sun4*|sparc*)
4678         arch="sparc"
4679     ;;
4680     tilegx|tile-gx)
4681         arch="tilegx"
4682     ;;
4683     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4684         arch="x86"
4685     ;;
4686 esac
4687
4688 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4689 enable $arch
4690
4691 # Add processor-specific flags
4692 if enabled aarch64; then
4693
4694     case $cpu in
4695         armv*)
4696             cpuflags="-march=$cpu"
4697         ;;
4698         *)
4699             cpuflags="-mcpu=$cpu"
4700         ;;
4701     esac
4702
4703 elif enabled alpha; then
4704
4705     cpuflags="-mcpu=$cpu"
4706
4707 elif enabled arm; then
4708
4709     check_arm_arch() {
4710         test_cpp_condition stddef.h \
4711             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4712             $cpuflags
4713     }
4714
4715     probe_arm_arch() {
4716         if   check_arm_arch 4;        then echo armv4
4717         elif check_arm_arch 4T;       then echo armv4t
4718         elif check_arm_arch 5;        then echo armv5
4719         elif check_arm_arch 5E;       then echo armv5e
4720         elif check_arm_arch 5T;       then echo armv5t
4721         elif check_arm_arch 5TE;      then echo armv5te
4722         elif check_arm_arch 5TEJ;     then echo armv5te
4723         elif check_arm_arch 6;        then echo armv6
4724         elif check_arm_arch 6J;       then echo armv6j
4725         elif check_arm_arch 6K;       then echo armv6k
4726         elif check_arm_arch 6Z;       then echo armv6z
4727         elif check_arm_arch 6KZ;      then echo armv6zk
4728         elif check_arm_arch 6ZK;      then echo armv6zk
4729         elif check_arm_arch 6T2;      then echo armv6t2
4730         elif check_arm_arch 7;        then echo armv7
4731         elif check_arm_arch 7A  7_A;  then echo armv7-a
4732         elif check_arm_arch 7S;       then echo armv7-a
4733         elif check_arm_arch 7R  7_R;  then echo armv7-r
4734         elif check_arm_arch 7M  7_M;  then echo armv7-m
4735         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4736         elif check_arm_arch 8A  8_A;  then echo armv8-a
4737         fi
4738     }
4739
4740     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4741
4742     case $cpu in
4743         armv*)
4744             cpuflags="-march=$cpu"
4745             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4746         ;;
4747         *)
4748             cpuflags="-mcpu=$cpu"
4749             case $cpu in
4750                 cortex-a*)                               subarch=armv7a  ;;
4751                 cortex-r*)                               subarch=armv7r  ;;
4752                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4753                 arm11*)                                  subarch=armv6   ;;
4754                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4755                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4756                 *)                             subarch=$(probe_arm_arch) ;;
4757             esac
4758         ;;
4759     esac
4760
4761     case "$subarch" in
4762         armv5t*)    enable fast_clz                ;;
4763         armv[6-8]*)
4764             enable fast_clz
4765             disabled fast_unaligned || enable fast_unaligned
4766             ;;
4767     esac
4768
4769 elif enabled avr32; then
4770
4771     case $cpu in
4772         ap7[02]0[0-2])
4773             subarch="avr32_ap"
4774             cpuflags="-mpart=$cpu"
4775         ;;
4776         ap)
4777             subarch="avr32_ap"
4778             cpuflags="-march=$cpu"
4779         ;;
4780         uc3[ab]*)
4781             subarch="avr32_uc"
4782             cpuflags="-mcpu=$cpu"
4783         ;;
4784         uc)
4785             subarch="avr32_uc"
4786             cpuflags="-march=$cpu"
4787         ;;
4788     esac
4789
4790 elif enabled bfin; then
4791
4792     cpuflags="-mcpu=$cpu"
4793
4794 elif enabled mips; then
4795
4796     cpuflags="-march=$cpu"
4797
4798     if [ "$cpu" != "generic" ]; then
4799         disable mips32r2
4800         disable mips32r5
4801         disable mips64r2
4802         disable mips32r6
4803         disable mips64r6
4804         disable loongson2
4805         disable loongson3
4806
4807         case $cpu in
4808             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4809                 enable mips32r2
4810                 disable msa
4811             ;;
4812             p5600|i6400|p6600)
4813                 disable mipsdsp
4814                 disable mipsdspr2
4815             ;;
4816             loongson*)
4817                 enable loongson2
4818                 enable loongson3
4819                 enable local_aligned
4820                 enable simd_align_16
4821                 enable fast_64bit
4822                 enable fast_clz
4823                 enable fast_cmov
4824                 enable fast_unaligned
4825                 disable aligned_stack
4826                 disable mipsfpu
4827                 disable mipsdsp
4828                 disable mipsdspr2
4829                 # When gcc version less than 5.3.0, add -fno-expensive-optimizations flag.
4830                 if [ $cc == gcc ]; then
4831                     gcc_version=$(gcc -dumpversion)
4832                     if [ "$(echo "$gcc_version 5.3.0" | tr " " "\n" | sort -rV | head -n 1)" == "$gcc_version" ]; then
4833                         expensive_optimization_flag=""
4834                     else
4835                         expensive_optimization_flag="-fno-expensive-optimizations"
4836                     fi
4837                 fi
4838                 case $cpu in
4839                     loongson3*)
4840                         cpuflags="-march=loongson3a -mhard-float $expensive_optimization_flag"
4841                     ;;
4842                     loongson2e)
4843                         cpuflags="-march=loongson2e -mhard-float $expensive_optimization_flag"
4844                     ;;
4845                     loongson2f)
4846                         cpuflags="-march=loongson2f -mhard-float $expensive_optimization_flag"
4847                     ;;
4848                 esac
4849             ;;
4850             *)
4851                 # Unknown CPU. Disable everything.
4852                 warn "unknown CPU. Disabling all MIPS optimizations."
4853                 disable mipsfpu
4854                 disable mipsdsp
4855                 disable mipsdspr2
4856                 disable msa
4857                 disable mmi
4858             ;;
4859         esac
4860
4861         case $cpu in
4862             24kc)
4863                 disable mipsfpu
4864                 disable mipsdsp
4865                 disable mipsdspr2
4866             ;;
4867             24kf*)
4868                 disable mipsdsp
4869                 disable mipsdspr2
4870             ;;
4871             24kec|34kc|1004kc)
4872                 disable mipsfpu
4873                 disable mipsdspr2
4874             ;;
4875             24kef*|34kf*|1004kf*)
4876                 disable mipsdspr2
4877             ;;
4878             74kc)
4879                 disable mipsfpu
4880             ;;
4881             p5600)
4882                 enable mips32r5
4883                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4884             ;;
4885             i6400)
4886                 enable mips64r6
4887                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4888             ;;
4889             p6600)
4890                 enable mips64r6
4891                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4892             ;;
4893         esac
4894     else
4895         # We do not disable anything. Is up to the user to disable the unwanted features.
4896         warn 'generic cpu selected'
4897     fi
4898
4899 elif enabled ppc; then
4900
4901     disable ldbrx
4902
4903     case $(tolower $cpu) in
4904         601|ppc601|powerpc601)
4905             cpuflags="-mcpu=601"
4906             disable altivec
4907         ;;
4908         603*|ppc603*|powerpc603*)
4909             cpuflags="-mcpu=603"
4910             disable altivec
4911         ;;
4912         604*|ppc604*|powerpc604*)
4913             cpuflags="-mcpu=604"
4914             disable altivec
4915         ;;
4916         g3|75*|ppc75*|powerpc75*)
4917             cpuflags="-mcpu=750"
4918             disable altivec
4919         ;;
4920         g4|745*|ppc745*|powerpc745*)
4921             cpuflags="-mcpu=7450"
4922             disable vsx
4923         ;;
4924         74*|ppc74*|powerpc74*)
4925             cpuflags="-mcpu=7400"
4926             disable vsx
4927         ;;
4928         g5|970|ppc970|powerpc970)
4929             cpuflags="-mcpu=970"
4930             disable vsx
4931         ;;
4932         power[3-6]*)
4933             cpuflags="-mcpu=$cpu"
4934             disable vsx
4935         ;;
4936         power[7-8]*)
4937             cpuflags="-mcpu=$cpu"
4938         ;;
4939         cell)
4940             cpuflags="-mcpu=cell"
4941             enable ldbrx
4942             disable vsx
4943         ;;
4944         e500mc)
4945             cpuflags="-mcpu=e500mc"
4946             disable altivec
4947         ;;
4948         e500v2)
4949             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4950             disable altivec
4951             disable dcbzl
4952         ;;
4953         e500)
4954             cpuflags="-mcpu=8540 -mhard-float"
4955             disable altivec
4956             disable dcbzl
4957         ;;
4958     esac
4959
4960 elif enabled sparc; then
4961
4962     case $cpu in
4963         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4964             cpuflags="-mcpu=$cpu"
4965         ;;
4966         ultrasparc*|niagara[234])
4967             cpuflags="-mcpu=$cpu"
4968         ;;
4969     esac
4970
4971 elif enabled x86; then
4972
4973     case $cpu in
4974         i[345]86|pentium)
4975             cpuflags="-march=$cpu"
4976             disable i686
4977             disable mmx
4978         ;;
4979         # targets that do NOT support nopl and conditional mov (cmov)
4980         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4981             cpuflags="-march=$cpu"
4982             disable i686
4983         ;;
4984         # targets that do support nopl and conditional mov (cmov)
4985         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4986         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4987         |amdfam10|barcelona|b[dt]ver*|znver*)
4988             cpuflags="-march=$cpu"
4989             enable i686
4990             enable fast_cmov
4991         ;;
4992         # targets that do support conditional mov but on which it's slow
4993         pentium4|pentium4m|prescott|nocona)
4994             cpuflags="-march=$cpu"
4995             enable i686
4996             disable fast_cmov
4997         ;;
4998     esac
4999
5000 fi
5001
5002 if [ "$cpu" != generic ]; then
5003     add_cflags  $cpuflags
5004     add_asflags $cpuflags
5005     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
5006 fi
5007
5008 # compiler sanity check
5009 test_exec <<EOF
5010 int main(void){ return 0; }
5011 EOF
5012 if test "$?" != 0; then
5013     echo "$cc is unable to create an executable file."
5014     if test -z "$cross_prefix" && ! enabled cross_compile ; then
5015         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
5016         echo "Only do this if you know what cross compiling means."
5017     fi
5018     die "C compiler test failed."
5019 fi
5020
5021 add_cppflags -D_ISOC99_SOURCE
5022 add_cxxflags -D__STDC_CONSTANT_MACROS
5023 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
5024
5025 # some compilers silently accept -std=c11, so we also need to check that the
5026 # version macro is defined properly
5027 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
5028     add_cflags -std=c11 ||
5029     check_cflags -std=c99
5030
5031 check_cppflags -D_FILE_OFFSET_BITS=64
5032 check_cppflags -D_LARGEFILE_SOURCE
5033
5034 add_host_cppflags -D_ISOC99_SOURCE
5035 check_host_cflags -std=c99
5036 check_host_cflags -Wall
5037 check_host_cflags $host_cflags_speed
5038
5039 check_64bit(){
5040     arch32=$1
5041     arch64=$2
5042     expr=${3:-'sizeof(void *) > 4'}
5043     test_code cc "" "int test[2*($expr) - 1]" &&
5044         subarch=$arch64 || subarch=$arch32
5045     enable $subarch
5046 }
5047
5048 case "$arch" in
5049     aarch64|alpha|ia64)
5050         enabled shared && enable_weak pic
5051     ;;
5052     mips)
5053         check_64bit mips mips64 '_MIPS_SIM > 1'
5054         enabled shared && enable_weak pic
5055     ;;
5056     parisc)
5057         check_64bit parisc parisc64
5058         enabled shared && enable_weak pic
5059     ;;
5060     ppc)
5061         check_64bit ppc ppc64
5062         enabled shared && enable_weak pic
5063     ;;
5064     s390)
5065         check_64bit s390 s390x
5066         enabled shared && enable_weak pic
5067     ;;
5068     sparc)
5069         check_64bit sparc sparc64
5070         enabled shared && enable_weak pic
5071     ;;
5072     x86)
5073         check_64bit x86_32 x86_64
5074         # Treat x32 as x64 for now. Note it also needs pic if shared
5075         test "$subarch" = "x86_32" && test_cpp_condition stddef.h 'defined(__x86_64__)' &&
5076             subarch=x86_64 && enable x86_64 && disable x86_32
5077         if enabled x86_64; then
5078             enabled shared && enable_weak pic
5079             objformat=elf64
5080         fi
5081     ;;
5082 esac
5083
5084 # OS specific
5085 case $target_os in
5086     aix)
5087         SHFLAGS=-shared
5088         add_cppflags '-I\$(SRC_PATH)/compat/aix'
5089         enabled shared && add_ldflags -Wl,-brtl
5090         arflags='-Xany -r -c'
5091         striptype=""
5092         ;;
5093     android)
5094         disable symver
5095         enable section_data_rel_ro
5096         add_cflags -fPIE
5097         add_ldexeflags -fPIE -pie
5098         SLIB_INSTALL_NAME='$(SLIBNAME)'
5099         SLIB_INSTALL_LINKS=
5100         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
5101         ;;
5102     haiku)
5103         prefix_default="/boot/common"
5104         network_extralibs="-lnetwork"
5105         host_extralibs=
5106         ;;
5107     sunos)
5108         SHFLAGS='-shared -Wl,-h,$$(@F)'
5109         enabled x86 && append SHFLAGS -mimpure-text
5110         network_extralibs="-lsocket -lnsl"
5111         add_cppflags -D__EXTENSIONS__
5112         # When using suncc to build, the Solaris linker will mark
5113         # an executable with each instruction set encountered by
5114         # the Solaris assembler.  As our libraries contain their own
5115         # guards for processor-specific code, instead suppress
5116         # generation of the HWCAPS ELF section on Solaris x86 only.
5117         enabled_all suncc x86 &&
5118             echo "hwcap_1 = OVERRIDE;" > mapfile &&
5119             add_ldflags -Wl,-M,mapfile
5120         nm_default='nm -P -g'
5121         version_script='-M'
5122         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
5123         ;;
5124     netbsd)
5125         disable symver
5126         oss_indev_extralibs="-lossaudio"
5127         oss_outdev_extralibs="-lossaudio"
5128         enabled gcc || check_ldflags -Wl,-zmuldefs
5129         ;;
5130     openbsd|bitrig)
5131         disable symver
5132         striptype=""
5133         SHFLAGS='-shared'
5134         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
5135         SLIB_INSTALL_LINKS=
5136         oss_indev_extralibs="-lossaudio"
5137         oss_outdev_extralibs="-lossaudio"
5138         ;;
5139     dragonfly)
5140         disable symver
5141         ;;
5142     freebsd)
5143         ;;
5144     bsd/os)
5145         add_extralibs -lpoll -lgnugetopt
5146         strip="strip -d"
5147         ;;
5148     darwin)
5149         enabled ppc && add_asflags -force_cpusubtype_ALL
5150         install_name_dir_default='$(SHLIBDIR)'
5151         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
5152         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
5153         strip="${strip} -x"
5154         add_ldflags -Wl,-dynamic,-search_paths_first
5155         check_cflags -Werror=partial-availability
5156         SLIBSUF=".dylib"
5157         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
5158         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
5159         enabled x86_64 && objformat="macho64" || objformat="macho32"
5160         enabled_any pic shared x86_64 ||
5161             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
5162         check_headers dispatch/dispatch.h &&
5163             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
5164         if test -n "$sysroot"; then
5165             is_in -isysroot $cc $CPPFLAGS $CFLAGS || check_cppflags -isysroot $sysroot
5166             is_in -isysroot $ld $LDFLAGS          || check_ldflags  -isysroot $sysroot
5167         fi
5168         version_script='-exported_symbols_list'
5169         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
5170         ;;
5171     msys*)
5172         die "Native MSYS builds are discouraged, please use the MINGW environment."
5173         ;;
5174     mingw32*|mingw64*)
5175         target_os=mingw32
5176         LIBTARGET=i386
5177         if enabled x86_64; then
5178             LIBTARGET="i386:x86-64"
5179         elif enabled arm; then
5180             LIBTARGET="arm"
5181         elif enabled aarch64; then
5182             LIBTARGET="arm64"
5183         fi
5184         if enabled shared; then
5185             # Cannot build both shared and static libs when using dllimport.
5186             disable static
5187         fi
5188         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5189         enabled x86_32 && check_ldflags -Wl,--large-address-aware
5190         shlibdir_default="$bindir_default"
5191         SLIBPREF=""
5192         SLIBSUF=".dll"
5193         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5194         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5195         if test_cmd lib.exe -list; then
5196             SLIB_EXTRA_CMD=-'lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5197             if enabled x86_64; then
5198                 LIBTARGET=x64
5199             fi
5200         else
5201             SLIB_EXTRA_CMD=-'$(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
5202         fi
5203         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5204         SLIB_INSTALL_LINKS=
5205         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5206         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5207         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" AR="$(AR_CMD)" NM="$(NM_CMD)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5208         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--disable-auto-image-base $$(@:$(SLIBSUF)=.def)'
5209         enabled x86_64 && objformat="win64" || objformat="win32"
5210         dlltool="${cross_prefix}dlltool"
5211         ranlib=:
5212         enable dos_paths
5213         check_ldflags -Wl,--nxcompat,--dynamicbase
5214         # Lets work around some stupidity in binutils.
5215         # ld will strip relocations from executables even though we need them
5216         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
5217         # however ld then forgets what the entry point should be (oops) so we
5218         # have to manually (re)set it.
5219         if enabled x86_32; then
5220             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
5221         elif enabled x86_64; then
5222             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
5223             check_ldflags -Wl,--high-entropy-va # binutils 2.25
5224             # Set image base >4GB for extra entropy with HEASLR
5225             add_ldexeflags -Wl,--image-base,0x140000000
5226             append SHFLAGS -Wl,--image-base,0x180000000
5227         fi
5228         ;;
5229     win32|win64)
5230         disable symver
5231         if enabled shared; then
5232             # Link to the import library instead of the normal static library
5233             # for shared libs.
5234             LD_LIB='%.lib'
5235             # Cannot build both shared and static libs with MSVC or icl.
5236             disable static
5237         fi
5238         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
5239         shlibdir_default="$bindir_default"
5240         SLIBPREF=""
5241         SLIBSUF=".dll"
5242         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5243         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5244         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5245         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5246         SLIB_INSTALL_LINKS=
5247         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5248         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5249         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5250         enabled x86_64 && objformat="win64" || objformat="win32"
5251         ranlib=:
5252         enable dos_paths
5253         ;;
5254     cygwin*)
5255         target_os=cygwin
5256         shlibdir_default="$bindir_default"
5257         SLIBPREF="cyg"
5258         SLIBSUF=".dll"
5259         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5260         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5261         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5262         SLIB_INSTALL_LINKS=
5263         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
5264         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
5265         enabled x86_64 && objformat="win64" || objformat="win32"
5266         enable dos_paths
5267         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5268         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5269         ;;
5270     *-dos|freedos|opendos)
5271         network_extralibs="-lsocket"
5272         objformat="coff"
5273         enable dos_paths
5274         add_cppflags -U__STRICT_ANSI__
5275         ;;
5276     linux)
5277         enable section_data_rel_ro
5278         enabled_any arm aarch64 && enable_weak linux_perf
5279         ;;
5280     irix*)
5281         target_os=irix
5282         ranlib="echo ignoring ranlib"
5283         ;;
5284     os/2*)
5285         strip="lxlite -CS"
5286         striptype=""
5287         objformat="aout"
5288         add_cppflags -D_GNU_SOURCE
5289         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
5290         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
5291         LIBSUF="_s.a"
5292         SLIBPREF=""
5293         SLIBSUF=".dll"
5294         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5295         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
5296         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
5297             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
5298             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
5299             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
5300             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
5301         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
5302             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
5303         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5304         SLIB_INSTALL_LINKS=
5305         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
5306         enable dos_paths
5307         enable_weak os2threads
5308         ;;
5309     gnu/kfreebsd)
5310         add_cppflags -D_BSD_SOURCE
5311         ;;
5312     gnu)
5313         ;;
5314     qnx)
5315         add_cppflags -D_QNX_SOURCE
5316         network_extralibs="-lsocket"
5317         ;;
5318     symbian)
5319         SLIBSUF=".dll"
5320         enable dos_paths
5321         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
5322         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
5323         add_ldflags -Wl,--target1-abs,--no-undefined \
5324                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
5325                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
5326         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
5327                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
5328                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
5329         ;;
5330     minix)
5331         ;;
5332     none)
5333         ;;
5334     *)
5335         die "Unknown OS '$target_os'."
5336         ;;
5337 esac
5338
5339 # test if creating links works
5340 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5341 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5342 mkdir "$link_dest"
5343 $ln_s "$link_dest" "$link_name"
5344 touch "$link_dest/test_file"
5345 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5346     # create link to source path
5347     [ -e src ] && rm src
5348     $ln_s "$source_path" src
5349     source_link=src
5350 else
5351     # creating directory links doesn't work
5352     # fall back to using the full source path
5353     source_link="$source_path"
5354 fi
5355 # cleanup
5356 rm -r "$link_dest"
5357 rm -r "$link_name"
5358
5359 # determine libc flavour
5360
5361 probe_libc(){
5362     pfx=$1
5363     pfx_no_=${pfx%_}
5364     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5365     if test_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5366         eval ${pfx}libc_type=uclibc
5367         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5368     elif test_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5369         eval ${pfx}libc_type=glibc
5370         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5371     # MinGW headers can be installed on Cygwin, so check for newlib first.
5372     elif test_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5373         eval ${pfx}libc_type=newlib
5374         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
5375     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5376     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5377         eval ${pfx}libc_type=mingw64
5378         if test_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5379             add_compat msvcrt/snprintf.o
5380             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5381         fi
5382         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5383         eval test \$${pfx_no_}cc_type = "gcc" &&
5384             add_${pfx}cppflags -D__printf__=__gnu_printf__
5385         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5386             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5387     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5388          test_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5389         eval ${pfx}libc_type=mingw32
5390         test_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5391             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5392             die "ERROR: MinGW32 runtime version must be >= 3.15."
5393         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5394         test_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
5395             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5396         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5397             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5398         eval test \$${pfx_no_}cc_type = "gcc" &&
5399             add_${pfx}cppflags -D__printf__=__gnu_printf__
5400     elif test_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5401         eval ${pfx}libc_type=msvcrt
5402         if test_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5403             if [ "$pfx" = host_ ]; then
5404                 add_host_cppflags -Dsnprintf=_snprintf
5405             else
5406                 add_compat strtod.o strtod=avpriv_strtod
5407                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5408                                              _snprintf=avpriv_snprintf  \
5409                                              vsnprintf=avpriv_vsnprintf
5410             fi
5411         fi
5412         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5413         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5414         # 0x601 by default unless something else is set by the user.
5415         # This can easily lead to us detecting functions only present
5416         # in such new versions and producing binaries requiring windows 7.0.
5417         # Therefore explicitly set the default to Vista unless the user has
5418         # set something else on the command line.
5419         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5420         # family. For these cases, configure is free to use any functions
5421         # found in the SDK headers by default. (Alternatively, we could force
5422         # _WIN32_WINNT to 0x0602 in that case.)
5423         test_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5424             { test_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0600; }
5425 #ifdef WINAPI_FAMILY
5426 #include <winapifamily.h>
5427 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5428 #error not desktop
5429 #endif
5430 #endif
5431 EOF
5432         if [ "$pfx" = "" ]; then
5433             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5434             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5435         fi
5436     elif test_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5437         eval ${pfx}libc_type=klibc
5438     elif test_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5439         eval ${pfx}libc_type=bionic
5440     elif test_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5441         eval ${pfx}libc_type=solaris
5442         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5443     fi
5444     test_${pfx}cc <<EOF
5445 #include <time.h>
5446 void *v = localtime_r;
5447 EOF
5448 test "$?" != 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
5449 #include <time.h>
5450 void *v = localtime_r;
5451 EOF
5452
5453     eval test -n "\${${pfx}libc_type}" && enable ${pfx}libc_${libc_type}
5454 }
5455
5456 probe_libc
5457 probe_libc host_
5458
5459 # hacks for compiler/libc/os combinations
5460
5461 case $libc_type in
5462     bionic)
5463         add_compat strtod.o strtod=avpriv_strtod
5464         ;;
5465 esac
5466
5467 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5468     add_cppflags '-I\$(SRC_PATH)/compat/float'
5469
5470 test_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5471
5472 set_default libdir
5473 : ${shlibdir_default:="$libdir"}
5474 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5475
5476 set_default $PATHS_LIST
5477 set_default nm
5478
5479 disabled optimizations || enabled ossfuzz || check_cflags -fomit-frame-pointer
5480
5481 enable_weak_pic() {
5482     disabled pic && return
5483     enable pic
5484     add_cppflags -DPIC
5485     case "$target_os" in
5486     mingw*|cygwin*|win*)
5487         ;;
5488     *)
5489         add_cflags -fPIC
5490         add_asflags -fPIC
5491         ;;
5492     esac
5493 }
5494
5495 enabled pic && enable_weak_pic
5496
5497 test_cc <<EOF || die "Symbol mangling check failed."
5498 int ff_extern;
5499 EOF
5500 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5501 extern_prefix=${sym%%ff_extern*}
5502
5503 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
5504
5505 for restrict_keyword in restrict __restrict__ __restrict ""; do
5506     test_code cc "" "char * $restrict_keyword p" && break
5507 done
5508
5509 check_cc pragma_deprecated "" '_Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"")'
5510
5511 # The global variable ensures the bits appear unchanged in the object file.
5512 test_cc <<EOF || die "endian test failed"
5513 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5514 EOF
5515 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5516
5517 check_cc const_nan math.h "struct { double d; } static const bar[] = { { NAN } }"
5518
5519 if ! enabled ppc64 || enabled bigendian; then
5520     disable vsx
5521 fi
5522
5523 check_gas() {
5524     log "check_gas using '$as' as AS"
5525     # :vararg is used on aarch64, arm and ppc altivec
5526     check_as vararg "
5527 .macro m n, y:vararg=0
5528 \n: .int \y
5529 .endm
5530 m x" || return 1
5531     # .altmacro is only used in arm asm
5532     ! enabled arm || check_as gnu_as ".altmacro"
5533 }
5534
5535 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5536     nogas=:
5537     enabled_any arm aarch64 && nogas=die
5538     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5539     as_noop=-v
5540
5541     case $as_type in
5542         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5543         gcc)  gaspp_as_type=gas ;;
5544         *)    gaspp_as_type=$as_type ;;
5545     esac
5546
5547     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5548
5549     test "${as#*gas-preprocessor.pl}" != "$as" ||
5550     test_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5551         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5552
5553     if ! check_gas ; then
5554         as=${gas:=$as}
5555         check_gas || \
5556             $nogas "GNU assembler not found, install/update gas-preprocessor"
5557     fi
5558
5559     check_as as_func ".func test
5560                       .endfunc"
5561 fi
5562
5563 check_inline_asm inline_asm_labels '"1:\n"'
5564
5565 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5566
5567 if enabled aarch64; then
5568     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5569     # internal assembler in clang 3.3 does not support this instruction
5570     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5571     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5572
5573     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5574
5575 elif enabled alpha; then
5576
5577     check_cflags -mieee
5578
5579 elif enabled arm; then
5580
5581     enabled msvc && check_cpp_condition thumb stddef.h "defined _M_ARMT"
5582     test_cpp_condition stddef.h "defined __thumb__" && test_cc <<EOF && enable_weak thumb
5583 float func(float a, float b){ return a+b; }
5584 EOF
5585     enabled thumb && check_cflags -mthumb || check_cflags -marm
5586
5587     if check_cpp_condition vfp_args stddef.h "defined __ARM_PCS_VFP"; then
5588         :
5589     elif check_cpp_condition vfp_args stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5590         :
5591     elif ! test_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5592         case "${cross_prefix:-$cc}" in
5593             *hardfloat*) enable vfp_args; fpabi=vfp ;;
5594             *) check_ld "cc" vfp_args <<EOF && fpabi=vfp || fpabi=soft ;;
5595 __asm__ (".eabi_attribute 28, 1");
5596 int main(void) { return 0; }
5597 EOF
5598         esac
5599         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5600     fi
5601
5602     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5603     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5604     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5605     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5606     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5607     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5608     enabled setend  && check_insn setend  'setend be'
5609
5610     [ $target_os = linux ] || [ $target_os = android ] ||
5611         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5612             $ARCH_EXT_LIST_ARM
5613
5614     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5615
5616     check_as as_arch_directive ".arch armv7-a"
5617     check_as as_dn_directive   "ra .dn d0.i16"
5618     check_as as_fpu_directive  ".fpu neon"
5619
5620     # llvm's integrated assembler supports .object_arch from llvm 3.5
5621     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
5622         check_as as_object_arch ".object_arch armv4"
5623
5624     # MS armasm fails to assemble our PIC constructs
5625     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5626
5627 elif enabled mips; then
5628
5629     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5630     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5631     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5632
5633     # Enable minimum ISA based on selected options
5634     if enabled mips64; then
5635         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5636         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5637         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5638     else
5639         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5640         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5641         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5642         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5643     fi
5644
5645     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5646     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5647     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_headers msa.h || disable msa
5648     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5649     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5650
5651     if enabled bigendian && enabled msa; then
5652         disable msa
5653     fi
5654
5655 elif enabled parisc; then
5656
5657     if enabled gcc; then
5658         case $($cc -dumpversion) in
5659             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5660         esac
5661     fi
5662
5663 elif enabled ppc; then
5664
5665     enable local_aligned
5666
5667     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5668     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5669     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5670     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5671
5672     if enabled altivec; then
5673         check_cflags -maltivec -mabi=altivec
5674
5675         # check if our compiler supports Motorola AltiVec C API
5676         check_cc altivec altivec.h "vector signed int v1 = (vector signed int) { 0 };
5677                                     vector signed int v2 = (vector signed int) { 1 };
5678                                     v1 = vec_add(v1, v2);"
5679
5680         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5681     fi
5682
5683     if enabled vsx; then
5684         check_cflags -mvsx &&
5685         check_cc vsx altivec.h "int v[4] = { 0 };
5686                                 vector signed int v1 = vec_vsx_ld(0, v);"
5687     fi
5688
5689     if enabled power8; then
5690         check_cpp_condition power8 "altivec.h" "defined(_ARCH_PWR8)"
5691     fi
5692
5693 elif enabled x86; then
5694
5695     check_builtin rdtsc    intrin.h   "__rdtsc()"
5696     check_builtin mm_empty mmintrin.h "_mm_empty()"
5697
5698     enable local_aligned
5699
5700     # check whether EBP is available on x86
5701     # As 'i' is stored on the stack, this program will crash
5702     # if the base pointer is used to access it because the
5703     # base pointer is cleared in the inline assembly code.
5704     check_exec_crash <<EOF && enable ebp_available
5705 volatile int i=0;
5706 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5707 return i;
5708 EOF
5709
5710     # check whether EBX is available on x86
5711     check_inline_asm ebx_available '""::"b"(0)' &&
5712         check_inline_asm ebx_available '"":::"%ebx"'
5713
5714     # check whether xmm clobbers are supported
5715     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5716
5717     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5718         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5719
5720     # check whether binutils is new enough to compile SSSE3/MMXEXT
5721     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5722     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5723
5724     probe_x86asm(){
5725         x86asmexe_probe=$1
5726         if test_cmd $x86asmexe_probe -v; then
5727             x86asmexe=$x86asmexe_probe
5728             x86asm_type=nasm
5729             x86asm_debug="-g -F dwarf"
5730             X86ASMDEP=
5731             X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
5732         elif test_cmd $x86asmexe_probe --version; then
5733             x86asmexe=$x86asmexe_probe
5734             x86asm_type=yasm
5735             x86asm_debug="-g dwarf2"
5736             X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
5737             X86ASM_DEPFLAGS=
5738         fi
5739         check_x86asm x86asm "movbe ecx, [5]"
5740     }
5741
5742     if ! disabled_any asm mmx x86asm; then
5743         disable x86asm
5744         for program in $x86asmexe nasm yasm; do
5745             probe_x86asm $program && break
5746         done
5747         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
5748         X86ASMFLAGS="-f $objformat"
5749         enabled pic               && append X86ASMFLAGS "-DPIC"
5750         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
5751         case "$objformat" in
5752             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
5753         esac
5754
5755         check_x86asm avx512_external "vmovdqa32 [eax]{k1}{z}, zmm0"
5756         check_x86asm avx2_external   "vextracti128 xmm0, ymm0, 0"
5757         check_x86asm xop_external    "vpmacsdd xmm0, xmm1, xmm2, xmm3"
5758         check_x86asm fma4_external   "vfmaddps ymm0, ymm1, ymm2, ymm3"
5759         check_x86asm cpunop          "CPU amdnop"
5760     fi
5761
5762     case "$cpu" in
5763         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5764             disable fast_clz
5765         ;;
5766     esac
5767
5768 fi
5769
5770 check_cc intrinsics_neon arm_neon.h "int16x8_t test = vdupq_n_s16(0)"
5771
5772 check_ldflags -Wl,--as-needed
5773 check_ldflags -Wl,-z,noexecstack
5774
5775 if ! disabled network; then
5776     check_func getaddrinfo $network_extralibs
5777     check_func inet_aton $network_extralibs
5778
5779     check_type netdb.h "struct addrinfo"
5780     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5781     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5782     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5783     check_type poll.h "struct pollfd"
5784     check_type netinet/sctp.h "struct sctp_event_subscribe"
5785     check_struct "sys/socket.h" "struct msghdr" msg_flags
5786     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5787     check_type netinet/in.h "struct sockaddr_in6"
5788     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5789     check_type "sys/types.h sys/socket.h" socklen_t
5790
5791     # Prefer arpa/inet.h over winsock2
5792     if check_headers arpa/inet.h ; then
5793         check_func closesocket
5794     elif check_headers winsock2.h ; then
5795         check_func_headers winsock2.h closesocket -lws2 &&
5796             network_extralibs="-lws2" ||
5797         { check_func_headers winsock2.h closesocket -lws2_32 &&
5798             network_extralibs="-lws2_32"; } || disable winsock2_h network
5799         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5800
5801         check_type ws2tcpip.h socklen_t
5802         check_type ws2tcpip.h "struct addrinfo"
5803         check_type ws2tcpip.h "struct group_source_req"
5804         check_type ws2tcpip.h "struct ip_mreq_source"
5805         check_type ws2tcpip.h "struct ipv6_mreq"
5806         check_type winsock2.h "struct pollfd"
5807         check_struct winsock2.h "struct sockaddr" sa_len
5808         check_type ws2tcpip.h "struct sockaddr_in6"
5809         check_type ws2tcpip.h "struct sockaddr_storage"
5810     else
5811         disable network
5812     fi
5813 fi
5814
5815 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5816 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5817 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5818 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5819 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5820 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5821 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5822
5823 case "$custom_allocator" in
5824     jemalloc)
5825         # jemalloc by default does not use a prefix
5826         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5827     ;;
5828     tcmalloc)
5829         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
5830         malloc_prefix=tc_
5831     ;;
5832 esac
5833
5834 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5835 check_func  ${malloc_prefix}memalign            && enable memalign
5836 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5837
5838 check_func  access
5839 check_func_headers stdlib.h arc4random
5840 check_lib   clock_gettime time.h clock_gettime || check_lib clock_gettime time.h clock_gettime -lrt
5841 check_func  fcntl
5842 check_func  fork
5843 check_func  gethrtime
5844 check_func  getopt
5845 check_func  getrusage
5846 check_func  gettimeofday
5847 check_func  isatty
5848 check_func  mkstemp
5849 check_func  mmap
5850 check_func  mprotect
5851 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5852 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
5853 check_func  sched_getaffinity
5854 check_func  setrlimit
5855 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5856 check_func  strerror_r
5857 check_func  sysconf
5858 check_func  sysctl
5859 check_func  usleep
5860
5861 check_func_headers conio.h kbhit
5862 check_func_headers io.h setmode
5863 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5864 check_func_headers mach/mach_time.h mach_absolute_time
5865 check_func_headers stdlib.h getenv
5866 check_func_headers sys/stat.h lstat
5867
5868 check_func_headers windows.h GetProcessAffinityMask
5869 check_func_headers windows.h GetProcessTimes
5870 check_func_headers windows.h GetSystemTimeAsFileTime
5871 check_func_headers windows.h LoadLibrary
5872 check_func_headers windows.h MapViewOfFile
5873 check_func_headers windows.h PeekNamedPipe
5874 check_func_headers windows.h SetConsoleTextAttribute
5875 check_func_headers windows.h SetConsoleCtrlHandler
5876 check_func_headers windows.h Sleep
5877 check_func_headers windows.h VirtualAlloc
5878 check_func_headers glob.h glob
5879 enabled xlib &&
5880     check_lib xlib "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5881
5882 check_headers direct.h
5883 check_headers dirent.h
5884 check_headers dxgidebug.h
5885 check_headers dxva.h
5886 check_headers dxva2api.h -D_WIN32_WINNT=0x0600
5887 check_headers io.h
5888 check_headers linux/perf_event.h
5889 check_headers libcrystalhd/libcrystalhd_if.h
5890 check_headers malloc.h
5891 check_headers net/udplite.h
5892 check_headers poll.h
5893 check_headers sys/param.h
5894 check_headers sys/resource.h
5895 check_headers sys/select.h
5896 check_headers sys/time.h
5897 check_headers sys/un.h
5898 check_headers termios.h
5899 check_headers unistd.h
5900 check_headers valgrind/valgrind.h
5901 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5902 check_headers windows.h
5903 check_headers X11/extensions/XvMClib.h
5904 check_headers asm/types.h
5905
5906 # it seems there are versions of clang in some distros that try to use the
5907 # gcc headers, which explodes for stdatomic
5908 # so we also check that atomics actually work here
5909 check_builtin stdatomic stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0); foo += bar"
5910
5911 check_lib advapi32 "windows.h"            RegCloseKey          -ladvapi32
5912 check_lib bcrypt   "windows.h bcrypt.h"   BCryptGenRandom      -lbcrypt &&
5913     check_cpp_condition bcrypt bcrypt.h "defined BCRYPT_RNG_ALGORITHM"
5914 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
5915 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
5916 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
5917
5918 check_lib android android/native_window.h ANativeWindow_acquire -landroid
5919 check_lib mediandk "stdint.h media/NdkImage.h" AImage_delete -lmediandk
5920 check_lib camera2ndk "stdbool.h stdint.h camera/NdkCameraManager.h" ACameraManager_create -lcamera2ndk
5921
5922 enabled appkit       && check_apple_framework AppKit
5923 enabled audiotoolbox && check_apple_framework AudioToolbox
5924 enabled avfoundation && check_apple_framework AVFoundation
5925 enabled coreimage    && check_apple_framework CoreImage
5926 enabled videotoolbox && check_apple_framework VideoToolbox
5927
5928 check_apple_framework CoreFoundation
5929 check_apple_framework CoreMedia
5930 check_apple_framework CoreVideo
5931
5932 enabled avfoundation && {
5933     disable coregraphics applicationservices
5934     check_lib coregraphics        CoreGraphics/CoreGraphics.h               CGGetActiveDisplayList "-framework CoreGraphics" ||
5935     check_lib applicationservices ApplicationServices/ApplicationServices.h CGGetActiveDisplayList "-framework ApplicationServices"; }
5936
5937 enabled videotoolbox && {
5938     check_lib coreservices CoreServices/CoreServices.h UTGetOSTypeFromString "-framework CoreServices"
5939     check_func_headers CoreMedia/CMFormatDescription.h kCMVideoCodecType_HEVC "-framework CoreMedia"
5940 }
5941
5942 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5943
5944 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5945 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5946 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5947 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5948 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5949
5950 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
5951 check_type "va/va.h va/va_dec_vp8.h" "VAPictureParameterBufferVP8"
5952 check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
5953 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
5954 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
5955 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
5956 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
5957 check_type "va/va.h va/va_enc_mpeg2.h" "VAEncPictureParameterBufferMPEG2"
5958 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
5959 check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
5960
5961 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5962
5963 if ! disabled ffnvcodec; then
5964     check_pkg_config ffnvcodec "ffnvcodec >= 8.1.24.2" \
5965           "ffnvcodec/nvEncodeAPI.h ffnvcodec/dynlink_cuda.h ffnvcodec/dynlink_cuviddec.h ffnvcodec/dynlink_nvcuvid.h" "" || \
5966       check_pkg_config ffnvcodec "ffnvcodec >= 8.0.14.2 ffnvcodec < 8.1" \
5967           "ffnvcodec/nvEncodeAPI.h ffnvcodec/dynlink_cuda.h ffnvcodec/dynlink_cuviddec.h ffnvcodec/dynlink_nvcuvid.h" ""
5968 fi
5969
5970 check_cpp_condition winrt windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)"
5971
5972 if ! disabled w32threads && ! enabled pthreads; then
5973     check_func_headers "windows.h process.h" _beginthreadex &&
5974         check_type "windows.h" CONDITION_VARIABLE &&
5975         check_type "windows.h" INIT_ONCE &&
5976         enable w32threads || disable w32threads
5977     if ! enabled w32threads && enabled winrt; then
5978         check_func_headers "windows.h" CreateThread &&
5979             enable w32threads || disable w32threads
5980     fi
5981 fi
5982
5983 # check for some common methods of building with pthread support
5984 # do this before the optional library checks as some of them require pthreads
5985 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5986     if check_lib pthreads pthread.h pthread_join   -pthread &&
5987        check_lib pthreads pthread.h pthread_create -pthread; then
5988         add_cflags -pthread
5989     elif check_lib pthreads pthread.h pthread_join   -pthreads &&
5990          check_lib pthreads pthread.h pthread_create -pthreads; then
5991         add_cflags -pthreads
5992     elif check_lib pthreads pthread.h pthread_join   -ldl -pthread &&
5993          check_lib pthreads pthread.h pthread_create -ldl -pthread; then
5994         add_cflags -ldl -pthread
5995     elif check_lib pthreads pthread.h pthread_join   -lpthreadGC2 &&
5996          check_lib pthreads pthread.h pthread_create -lpthreadGC2; then
5997         :
5998     elif check_lib pthreads pthread.h pthread_join   -lpthread &&
5999          check_lib pthreads pthread.h pthread_create -lpthread; then
6000         :
6001     elif check_func pthread_join && check_func pthread_create; then
6002         enable pthreads
6003     fi
6004     check_cc pthreads "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER"
6005
6006     if enabled pthreads; then
6007         check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
6008         check_func pthread_cancel $pthreads_extralibs
6009     fi
6010 fi
6011
6012 enabled  zlib && { check_pkg_config zlib zlib "zlib.h" zlibVersion ||
6013                    check_lib zlib   zlib.h      zlibVersion    -lz; }
6014 enabled bzlib && check_lib bzlib bzlib.h BZ2_bzlibVersion    -lbz2
6015 enabled  lzma && check_lib lzma   lzma.h lzma_version_number -llzma
6016
6017 # On some systems dynamic loading requires no extra linker flags
6018 check_lib libdl dlfcn.h "dlopen dlsym" || check_lib libdl dlfcn.h "dlopen dlsym" -ldl
6019
6020 check_lib libm math.h sin -lm
6021
6022 atan2f_args=2
6023 copysign_args=2
6024 hypot_args=2
6025 ldexpf_args=2
6026 powf_args=2
6027
6028 for func in $MATH_FUNCS; do
6029     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
6030 done
6031
6032 for func in $COMPLEX_FUNCS; do
6033     eval check_complexfunc $func \${${func}_args:-1}
6034 done
6035
6036 # these are off by default, so fail if requested and not available
6037 enabled cuda_sdk          && require cuda_sdk cuda.h cuCtxCreate -lcuda
6038 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
6039 enabled decklink          && { require_headers DeckLinkAPI.h &&
6040                                { test_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a060100" || die "ERROR: Decklink API version must be >= 10.6.1."; } }
6041 enabled libndi_newtek     && require_headers Processing.NDI.Lib.h
6042 enabled frei0r            && require_headers frei0r.h
6043 enabled gmp               && require gmp gmp.h mpz_export -lgmp
6044 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init
6045 enabled jni               && { [ $target_os = "android" ] && check_headers jni.h && enabled pthreads || die "ERROR: jni not found"; }
6046 enabled ladspa            && require_headers ladspa.h
6047 enabled libaom            && require_pkg_config libaom "aom >= 1.0.0" aom/aom_codec.h aom_codec_version
6048 enabled lv2               && require_pkg_config lv2 lilv-0 "lilv/lilv.h" lilv_world_new
6049 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
6050 enabled libass            && require_pkg_config libass libass ass/ass.h ass_library_init
6051 enabled libbluray         && require_pkg_config libbluray libbluray libbluray/bluray.h bd_open
6052 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
6053 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
6054                              { check_lib libcelt celt/celt.h celt_decoder_create_custom -lcelt0 ||
6055                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
6056 enabled libcaca           && require_pkg_config libcaca caca caca.h caca_create_canvas
6057 enabled libcodec2         && require libcodec2 codec2/codec2.h codec2_create -lcodec2
6058 enabled libdavs2          && require_pkg_config libdavs2 "davs2 >= 1.5.115" davs2.h davs2_decoder_open
6059 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
6060 enabled libdrm            && require_pkg_config libdrm libdrm xf86drm.h drmGetVersion
6061 enabled libfdk_aac        && { check_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
6062                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
6063                                  warn "using libfdk without pkg-config"; } }
6064 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"
6065 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_extralibs
6066 enabled fontconfig        && enable libfontconfig
6067 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
6068 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
6069 enabled libfribidi        && require_pkg_config libfribidi fribidi fribidi.h fribidi_version_info
6070 enabled libgme            && { check_pkg_config libgme libgme gme/gme.h gme_new_emu ||
6071                                require libgme gme/gme.h gme_new_emu -lgme -lstdc++; }
6072 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
6073                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
6074                                done || die "ERROR: libgsm not found"; }
6075 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc $pthreads_extralibs
6076 enabled libklvanc         && require libklvanc libklvanc/vanc.h klvanc_context_create -lklvanc
6077 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
6078 enabled liblensfun        && require_pkg_config liblensfun lensfun lensfun.h lf_db_new
6079 # While it may appear that require is being used as a pkg-config
6080 # fallback for libmfx, it is actually being used to detect a different
6081 # installation route altogether.  If libmfx is installed via the Intel
6082 # Media SDK or Intel Media Server Studio, these don't come with
6083 # pkg-config support.  Instead, users should make sure that the build
6084 # can find the libraries and headers through other means.
6085 enabled libmfx            && { check_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit ||
6086                                { require libmfx "mfx/mfxvideo.h" MFXInit "-llibmfx $advapi32_extralibs" && warn "using libmfx without pkg-config"; } }
6087 enabled libmodplug        && require_pkg_config libmodplug libmodplug libmodplug/modplug.h ModPlug_Load
6088 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame $libm_extralibs
6089 enabled libmysofa         && { check_pkg_config libmysofa libmysofa mysofa.h mysofa_load ||
6090                                require libmysofa mysofa.h mysofa_load -lmysofa $zlib_extralibs; }
6091 enabled libnpp            && { check_lib libnpp npp.h nppGetLibVersion -lnppig -lnppicc -lnppc -lnppidei ||
6092                                check_lib libnpp npp.h nppGetLibVersion -lnppi -lnppc -lnppidei ||
6093                                die "ERROR: libnpp not found"; }
6094 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
6095 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
6096 enabled libopencv         && { check_headers opencv2/core/core_c.h &&
6097                                { check_pkg_config libopencv opencv opencv2/core/core_c.h cvCreateImageHeader ||
6098                                  require libopencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
6099                                require_pkg_config libopencv opencv opencv/cxcore.h cvCreateImageHeader; }
6100 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
6101 enabled libopenjpeg       && { check_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version ||
6102                                { require_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } }
6103 enabled libopenmpt        && require_pkg_config libopenmpt "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create -lstdc++ && append libopenmpt_extralibs "-lstdc++"
6104 enabled libopus           && {
6105     enabled libopus_decoder && {
6106         require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
6107     }
6108     enabled libopus_encoder && {
6109         require_pkg_config libopus opus opus_multistream.h opus_multistream_surround_encoder_create
6110     }
6111 }
6112 enabled libpulse          && require_pkg_config libpulse libpulse pulse/pulseaudio.h pa_context_new
6113 enabled librsvg           && require_pkg_config librsvg librsvg-2.0 librsvg-2.0/librsvg/rsvg.h rsvg_handle_render_cairo
6114 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
6115 enabled librubberband     && require_pkg_config librubberband "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new -lstdc++ && append librubberband_extralibs "-lstdc++"
6116 enabled libshine          && require_pkg_config libshine shine shine/layer3.h shine_encode_buffer
6117 enabled libsmbclient      && { check_pkg_config libsmbclient smbclient libsmbclient.h smbc_init ||
6118                                require libsmbclient libsmbclient.h smbc_init -lsmbclient; }
6119 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy -lstdc++
6120 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
6121 enabled libssh            && require_pkg_config libssh libssh libssh/sftp.h sftp_init
6122 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init
6123 enabled libsrt            && require_pkg_config libsrt "srt >= 1.3.0" srt/srt.h srt_socket
6124 enabled libtensorflow     && require libtensorflow tensorflow/c/c_api.h TF_Version -ltensorflow
6125 enabled libtesseract      && require_pkg_config libtesseract tesseract tesseract/capi.h TessBaseAPICreate
6126 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
6127 enabled libtls            && require_pkg_config libtls libtls tls.h tls_configure
6128 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
6129                              { check_lib libtwolame twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
6130                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
6131 enabled libv4l2           && require_pkg_config libv4l2 libv4l2 libv4l2.h v4l2_ioctl
6132 enabled libvidstab        && require_pkg_config libvidstab "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
6133 enabled libvmaf           && require_pkg_config libvmaf "libvmaf >= 1.3.9" libvmaf.h compute_vmaf
6134 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
6135 enabled libvorbis         && require_pkg_config libvorbis vorbis vorbis/codec.h vorbis_info_init &&
6136                              require_pkg_config libvorbisenc vorbisenc vorbis/vorbisenc.h vorbis_encode_init
6137
6138 enabled libvpx            && {
6139     enabled libvpx_vp8_decoder && {
6140         check_pkg_config libvpx_vp8_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
6141             check_lib libvpx_vp8_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_dec_init_ver VPX_IMG_FMT_HIGHBITDEPTH" -lvpx ||
6142                 die "ERROR: libvpx decoder version must be >=1.4.0";
6143     }
6144     enabled libvpx_vp8_encoder && {
6145         check_pkg_config libvpx_vp8_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
6146             check_lib libvpx_vp8_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VPX_IMG_FMT_HIGHBITDEPTH" -lvpx ||
6147                 die "ERROR: libvpx encoder version must be >=1.4.0";
6148     }
6149     enabled libvpx_vp9_decoder && {
6150         check_pkg_config libvpx_vp9_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
6151             check_lib libvpx_vp9_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx VPX_IMG_FMT_HIGHBITDEPTH" "-lvpx $libm_extralibs"
6152     }
6153     enabled libvpx_vp9_encoder && {
6154         check_pkg_config libvpx_vp9_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
6155             check_lib libvpx_vp9_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VPX_IMG_FMT_HIGHBITDEPTH" "-lvpx $libm_extralibs"
6156     }
6157     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
6158         die "libvpx enabled but no supported decoders found"
6159     fi
6160 }
6161
6162 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
6163 enabled libwebp           && {
6164     enabled libwebp_encoder      && require_pkg_config libwebp "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
6165     enabled libwebp_anim_encoder && check_pkg_config libwebp_anim_encoder "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit; }
6166 enabled libx264           && { check_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode ||
6167                                { require libx264 "stdint.h x264.h" x264_encoder_encode "-lx264 $pthreads_extralibs $libm_extralibs" &&
6168                                  warn "using libx264 without pkg-config"; } } &&
6169                              require_cpp_condition libx264 x264.h "X264_BUILD >= 118" &&
6170                              check_cpp_condition libx262 x264.h "X264_MPEG2"
6171 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
6172                              require_cpp_condition libx265 x265.h "X265_BUILD >= 68"
6173 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode "-lxavs $pthreads_extralibs $libm_extralibs"
6174 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
6175 enabled libzimg           && require_pkg_config libzimg "zimg >= 2.7.0" zimg.h zimg_get_api_version
6176 enabled libzmq            && require_pkg_config libzmq libzmq zmq.h zmq_ctx_new
6177 enabled libzvbi           && require_pkg_config libzvbi zvbi-0.2 libzvbi.h vbi_decoder_new &&
6178                              { test_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
6179                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
6180 enabled libxml2           && require_pkg_config libxml2 libxml-2.0 libxml2/libxml/xmlversion.h xmlCheckVersion
6181 enabled mbedtls           && { check_pkg_config mbedtls mbedtls mbedtls/x509_crt.h mbedtls_x509_crt_init ||
6182                                check_pkg_config mbedtls mbedtls mbedtls/ssl.h mbedtls_ssl_init ||
6183                                check_lib mbedtls mbedtls/ssl.h mbedtls_ssl_init -lmbedtls -lmbedx509 -lmbedcrypto ||
6184                                die "ERROR: mbedTLS not found"; }
6185 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
6186 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
6187                                { ! enabled cross_compile &&
6188                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
6189                                  add_ldflags -L/opt/vc/lib/ &&
6190                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
6191                                die "ERROR: mmal not found" &&
6192                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
6193 enabled openal            && { { for al_extralibs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
6194                                check_lib openal 'AL/al.h' alGetError "${al_extralibs}" && break; done } ||
6195                                die "ERROR: openal not found"; } &&
6196                              { test_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
6197                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
6198 enabled opencl            && { check_pkg_config opencl OpenCL CL/cl.h clEnqueueNDRangeKernel ||
6199                                check_lib opencl OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
6200                                check_lib opencl CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
6201                                die "ERROR: opencl not found"; } &&
6202                              { test_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
6203                                test_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
6204                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
6205 enabled opengl            && { check_lib opengl GL/glx.h glXGetProcAddress "-lGL" ||
6206                                check_lib opengl windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
6207                                check_lib opengl OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
6208                                check_lib opengl ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
6209                                die "ERROR: opengl not found."
6210                              }
6211 enabled omx               && require_headers OMX_Core.h
6212 enabled omx_rpi           && { check_headers OMX_Core.h ||
6213                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_headers OMX_Core.h ; } ||
6214                                die "ERROR: OpenMAX IL headers not found"; } && enable omx
6215 enabled openssl           && { check_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
6216                                check_pkg_config openssl openssl openssl/ssl.h SSL_library_init ||
6217                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
6218                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
6219                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
6220                                die "ERROR: openssl not found"; }
6221 enabled rkmpp             && { require_pkg_config rkmpp rockchip_mpp  rockchip/rk_mpi.h mpp_create &&
6222                                require_pkg_config rockchip_mpp "rockchip_mpp >= 1.3.7" rockchip/rk_mpi.h mpp_create &&
6223                                { enabled libdrm ||
6224                                  die "ERROR: rkmpp requires --enable-libdrm"; }
6225                              }
6226 enabled vapoursynth       && require_pkg_config vapoursynth "vapoursynth-script >= 42" VSScript.h vsscript_init
6227
6228
6229 if enabled gcrypt; then
6230     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
6231     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
6232         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
6233         gcrypt_extralibs=$("${GCRYPT_CONFIG}" --libs)
6234         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_extralibs ||
6235             die "ERROR: gcrypt not found"
6236         add_cflags $gcrypt_cflags
6237     else
6238         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
6239     fi
6240 fi
6241
6242 if enabled sdl2; then
6243     SDL2_CONFIG="${cross_prefix}sdl2-config"
6244     test_pkg_config sdl2 "sdl2 >= 2.0.1 sdl2 < 2.1.0" SDL_events.h SDL_PollEvent
6245     if disabled sdl2 && "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
6246         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
6247         sdl2_extralibs=$("${SDL2_CONFIG}" --libs)
6248         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
6249         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
6250         check_func_headers SDL_events.h SDL_PollEvent $sdl2_extralibs $sdl2_cflags &&
6251             enable sdl2
6252     fi
6253     if test $target_os = "mingw32"; then
6254         sdl2_extralibs=$(filter_out '-mwindows' $sdl2_extralibs)
6255     fi
6256 fi
6257
6258 if enabled decklink; then
6259     case $target_os in
6260         mingw32*|mingw64*|win32|win64)
6261             decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
6262             decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
6263             ;;
6264     esac
6265 fi
6266
6267 enabled securetransport &&
6268     check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
6269     check_lib securetransport "Security/SecureTransport.h Security/Security.h" "SSLCreateContext" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" ||
6270         disable securetransport
6271
6272 enabled securetransport &&
6273     check_func SecItemImport "-Wl,-framework,CoreFoundation -Wl,-framework,Security"
6274
6275 enabled schannel &&
6276     check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
6277     test_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" &&
6278     schannel_extralibs="-lsecur32" ||
6279         disable schannel
6280
6281 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
6282 enabled makeinfo \
6283     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
6284     && enable makeinfo_html || disable makeinfo_html
6285 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
6286 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
6287 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
6288 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
6289
6290 # check V4L2 codecs available in the API
6291 check_headers linux/fb.h
6292 check_headers linux/videodev2.h
6293 test_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6294 check_cc v4l2_m2m linux/videodev2.h "int i = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_VIDEO_M2M | V4L2_BUF_FLAG_LAST;"
6295 check_cc vc1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VC1_ANNEX_G;"
6296 check_cc mpeg1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG1;"
6297 check_cc mpeg2_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG2;"
6298 check_cc mpeg4_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG4;"
6299 check_cc hevc_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_HEVC;"
6300 check_cc h263_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H263;"
6301 check_cc h264_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H264;"
6302 check_cc vp8_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP8;"
6303 check_cc vp9_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP9;"
6304
6305 check_headers sys/videoio.h
6306 test_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6307
6308 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
6309 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
6310 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
6311 # w32api 3.12 had it defined wrong
6312 check_cpp_condition vfwcap_defines vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER"
6313
6314 check_type "dshow.h" IBaseFilter
6315
6316 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
6317 check_headers "dev/bktr/ioctl_meteor.h dev/bktr/ioctl_bt848.h"                   ||
6318     check_headers "machine/ioctl_meteor.h machine/ioctl_bt848.h"                 ||
6319     check_headers "dev/video/meteor/ioctl_meteor.h dev/video/bktr/ioctl_bt848.h" ||
6320     check_headers "dev/ic/bt8xx.h"
6321
6322 if check_struct sys/soundcard.h audio_buf_info bytes; then
6323     enable_sanitized sys/soundcard.h
6324 else
6325     test_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_sanitized sys/soundcard.h
6326     #include <sys/soundcard.h>
6327     audio_buf_info abc;
6328 EOF
6329 fi
6330
6331 enabled alsa && check_pkg_config alsa alsa "alsa/asoundlib.h" snd_pcm_htimestamp ||
6332     check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound
6333
6334 enabled libjack &&
6335     require_pkg_config libjack jack jack/jack.h jack_port_get_latency_range
6336
6337 enabled sndio && check_lib sndio sndio.h sio_open -lsndio
6338
6339 if enabled libcdio; then
6340     check_pkg_config libcdio libcdio_paranoia "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open ||
6341     check_pkg_config libcdio libcdio_paranoia "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open ||
6342     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6343     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6344     die "ERROR: No usable libcdio/cdparanoia found"
6345 fi
6346
6347 enabled libxcb && check_pkg_config libxcb "xcb >= 1.4" xcb/xcb.h xcb_connect ||
6348     disable libxcb_shm libxcb_shape libxcb_xfixes
6349
6350 if enabled libxcb; then
6351     enabled libxcb_shm    && check_pkg_config libxcb_shm    xcb-shm    xcb/shm.h    xcb_shm_attach
6352     enabled libxcb_shape  && check_pkg_config libxcb_shape  xcb-shape  xcb/shape.h  xcb_shape_get_rectangles
6353     enabled libxcb_xfixes && check_pkg_config libxcb_xfixes xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image
6354 fi
6355
6356 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6357
6358 # d3d11va requires linking directly to dxgi and d3d11 if not building for
6359 # the desktop api partition
6360 test_cpp <<EOF && enable uwp && d3d11va_extralibs="-ldxgi -ld3d11"
6361 #ifdef WINAPI_FAMILY
6362 #include <winapifamily.h>
6363 #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
6364 #error desktop, not uwp
6365 #else
6366 // WINAPI_FAMILY_APP, WINAPI_FAMILY_PHONE_APP => UWP
6367 #endif
6368 #else
6369 #error no family set
6370 #endif
6371 EOF
6372
6373 enabled vaapi &&
6374     check_lib vaapi va/va.h vaInitialize -lva
6375
6376 enabled vaapi &&
6377     check_cc vaapi "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)"
6378
6379 if enabled vaapi; then
6380     check_lib vaapi_drm "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm
6381     check_lib vaapi_x11 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 -lX11
6382 fi
6383
6384 enabled vaapi &&
6385     check_cpp_condition vaapi_1 "va/va.h" "VA_CHECK_VERSION(1, 0, 0)"
6386
6387 if enabled_all opencl libdrm ; then
6388     check_type "CL/cl_intel.h" "clCreateImageFromFdINTEL_fn" &&
6389         enable opencl_drm_beignet
6390     check_func_headers "CL/cl_ext.h" clImportMemoryARM &&
6391         enable opencl_drm_arm
6392 fi
6393
6394 if enabled_all opencl vaapi ; then
6395     enabled opencl_drm_beignet && enable opencl_vaapi_beignet
6396     check_type "CL/cl.h CL/va_ext.h" "clCreateFromVA_APIMediaSurfaceINTEL_fn" &&
6397         enable opencl_vaapi_intel_media
6398 fi
6399
6400 if enabled_all opencl dxva2 ; then
6401     check_type "CL/cl_dx9_media_sharing.h" cl_dx9_surface_info_khr &&
6402         enable opencl_dxva2
6403 fi
6404
6405 if enabled_all opencl d3d11va ; then
6406     check_type "CL/cl_d3d11.h" clGetDeviceIDsFromD3D11KHR_fn &&
6407         enable opencl_d3d11
6408 fi
6409
6410 enabled vdpau &&
6411     check_cpp_condition vdpau vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP"
6412
6413 enabled vdpau &&
6414     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
6415
6416 enabled crystalhd && check_lib crystalhd "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd
6417
6418 if enabled x86; then
6419     case $target_os in
6420         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6421             ;;
6422         *)
6423             disable ffnvcodec cuvid nvdec nvenc
6424             ;;
6425     esac
6426 else
6427     disable ffnvcodec cuvid nvdec nvenc
6428 fi
6429
6430 enabled ffnvcodec && enable cuda
6431
6432 enabled nvenc &&
6433     test_cc -I$source_path <<EOF || disable nvenc
6434 #include <ffnvcodec/nvEncodeAPI.h>
6435 NV_ENCODE_API_FUNCTION_LIST flist;
6436 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6437 int main(void) { return 0; }
6438 EOF
6439
6440 enabled amf &&
6441     check_cpp_condition amf "AMF/core/Version.h" \
6442         "(AMF_VERSION_MAJOR << 48 | AMF_VERSION_MINOR << 32 | AMF_VERSION_RELEASE << 16 | AMF_VERSION_BUILD_NUM) >= 0x0001000400040001"
6443
6444 # Funny iconv installations are not unusual, so check it after all flags have been set
6445 if enabled libc_iconv; then
6446     check_func_headers iconv.h iconv
6447 elif enabled iconv; then
6448     check_func_headers iconv.h iconv || check_lib iconv iconv.h iconv -liconv
6449 fi
6450
6451 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6452
6453 # add some useful compiler flags if supported
6454 check_cflags -Wdeclaration-after-statement
6455 check_cflags -Wall
6456 check_cflags -Wdisabled-optimization
6457 check_cflags -Wpointer-arith
6458 check_cflags -Wredundant-decls
6459 check_cflags -Wwrite-strings
6460 check_cflags -Wtype-limits
6461 check_cflags -Wundef
6462 check_cflags -Wmissing-prototypes
6463 check_cflags -Wno-pointer-to-int-cast
6464 check_cflags -Wstrict-prototypes
6465 check_cflags -Wempty-body
6466
6467 if enabled extra_warnings; then
6468     check_cflags -Wcast-qual
6469     check_cflags -Wextra
6470     check_cflags -Wpedantic
6471 fi
6472
6473 check_disable_warning(){
6474     warning_flag=-W${1#-Wno-}
6475     test_cflags $unknown_warning_flags $warning_flag && add_cflags $1
6476 }
6477
6478 test_cflags -Werror=unused-command-line-argument &&
6479     append unknown_warning_flags "-Werror=unused-command-line-argument"
6480 test_cflags -Werror=unknown-warning-option &&
6481     append unknown_warning_flags "-Werror=unknown-warning-option"
6482
6483 check_disable_warning -Wno-parentheses
6484 check_disable_warning -Wno-switch
6485 check_disable_warning -Wno-format-zero-length
6486 check_disable_warning -Wno-pointer-sign
6487 check_disable_warning -Wno-unused-const-variable
6488 check_disable_warning -Wno-bool-operation
6489
6490 check_disable_warning_headers(){
6491     warning_flag=-W${1#-Wno-}
6492     test_cflags $warning_flag && add_cflags_headers $1
6493 }
6494
6495 check_disable_warning_headers -Wno-deprecated-declarations
6496 check_disable_warning_headers -Wno-unused-variable
6497
6498 test_cc <<EOF && enable blocks_extension
6499 void (^block)(void);
6500 EOF
6501
6502 # add some linker flags
6503 check_ldflags -Wl,--warn-common
6504 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6505 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir && add_ldsoflags -Wl,-rpath,$libdir
6506 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6507
6508 # add some strip flags
6509 check_stripflags -x
6510
6511 enabled neon_clobber_test &&
6512     check_ldflags -Wl,--wrap,avcodec_open2              \
6513                   -Wl,--wrap,avcodec_decode_audio4      \
6514                   -Wl,--wrap,avcodec_decode_video2      \
6515                   -Wl,--wrap,avcodec_decode_subtitle2   \
6516                   -Wl,--wrap,avcodec_encode_audio2      \
6517                   -Wl,--wrap,avcodec_encode_video2      \
6518                   -Wl,--wrap,avcodec_encode_subtitle    \
6519                   -Wl,--wrap,avcodec_send_packet        \
6520                   -Wl,--wrap,avcodec_receive_packet     \
6521                   -Wl,--wrap,avcodec_send_frame         \
6522                   -Wl,--wrap,avcodec_receive_frame      \
6523                   -Wl,--wrap,swr_convert                \
6524                   -Wl,--wrap,avresample_convert ||
6525     disable neon_clobber_test
6526
6527 enabled xmm_clobber_test &&
6528     check_ldflags -Wl,--wrap,avcodec_open2              \
6529                   -Wl,--wrap,avcodec_decode_audio4      \
6530                   -Wl,--wrap,avcodec_decode_video2      \
6531                   -Wl,--wrap,avcodec_decode_subtitle2   \
6532                   -Wl,--wrap,avcodec_encode_audio2      \
6533                   -Wl,--wrap,avcodec_encode_video2      \
6534                   -Wl,--wrap,avcodec_encode_subtitle    \
6535                   -Wl,--wrap,avcodec_send_packet        \
6536                   -Wl,--wrap,avcodec_receive_packet     \
6537                   -Wl,--wrap,avcodec_send_frame         \
6538                   -Wl,--wrap,avcodec_receive_frame      \
6539                   -Wl,--wrap,swr_convert                \
6540                   -Wl,--wrap,avresample_convert         \
6541                   -Wl,--wrap,sws_scale ||
6542     disable xmm_clobber_test
6543
6544 check_ld "cc" proper_dce <<EOF
6545 extern const int array[512];
6546 static inline int func(void) { return array[0]; }
6547 int main(void) { return 0; }
6548 EOF
6549
6550 if enabled proper_dce; then
6551     echo "X { local: *; };" > $TMPV
6552     if test_ldflags -Wl,${version_script},$TMPV; then
6553         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6554         quotes='""'
6555         test_cc <<EOF && enable symver_asm_label
6556 void ff_foo(void) __asm__ ("av_foo@VERSION");
6557 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6558 EOF
6559         test_cc <<EOF && enable symver_gnu_asm
6560 __asm__(".symver ff_foo,av_foo@VERSION");
6561 void ff_foo(void) {}
6562 EOF
6563     fi
6564 fi
6565
6566 if [ -z "$optflags" ]; then
6567     if enabled small; then
6568         optflags=$cflags_size
6569     elif enabled optimizations; then
6570         optflags=$cflags_speed
6571     else
6572         optflags=$cflags_noopt
6573     fi
6574 fi
6575
6576 if [ -z "$nvccflags" ]; then
6577     nvccflags=$nvccflags_default
6578 fi
6579
6580 if enabled x86_64 || enabled ppc64 || enabled aarch64; then
6581     nvccflags="$nvccflags -m64"
6582 else
6583     nvccflags="$nvccflags -m32"
6584 fi
6585
6586 check_optflags(){
6587     check_cflags "$@"
6588     enabled lto && check_ldflags "$@"
6589 }
6590
6591 check_optflags $optflags
6592 check_optflags -fno-math-errno
6593 check_optflags -fno-signed-zeros
6594
6595 if enabled lto; then
6596     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6597     check_cflags  -flto
6598     check_ldflags -flto $cpuflags
6599     disable inline_asm_direct_symbol_refs
6600 fi
6601
6602 enabled ftrapv && check_cflags -ftrapv
6603
6604 test_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6605 int x;
6606 EOF
6607
6608
6609 if enabled icc; then
6610     # Just warnings, no remarks
6611     check_cflags -w1
6612     # -wd: Disable following warnings
6613     # 144, 167, 556: -Wno-pointer-sign
6614     # 188: enumerated type mixed with another type
6615     # 1292: attribute "foo" ignored
6616     # 1419: external declaration in primary source file
6617     # 10006: ignoring unknown option -fno-signed-zeros
6618     # 10148: ignoring unknown option -Wno-parentheses
6619     # 10156: ignoring option '-W'; no argument required
6620     # 13200: No EMMS instruction before call to function
6621     # 13203: No EMMS instruction before return from function
6622     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6623     # 11030: Warning unknown option --as-needed
6624     # 10156: ignoring option '-export'; no argument required
6625     check_ldflags -wd10156,11030
6626     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6627     enable ebp_available
6628     # The test above does not test linking
6629     enabled lto && disable symver_asm_label
6630     if enabled x86_32; then
6631         icc_version=$($cc -dumpversion)
6632         test ${icc_version%%.*} -ge 11 &&
6633             check_cflags -falign-stack=maintain-16-byte ||
6634             disable aligned_stack
6635     fi
6636 elif enabled gcc; then
6637     check_optflags -fno-tree-vectorize
6638     check_cflags -Werror=format-security
6639     check_cflags -Werror=implicit-function-declaration
6640     check_cflags -Werror=missing-prototypes
6641     check_cflags -Werror=return-type
6642     check_cflags -Werror=vla
6643     check_cflags -Wformat
6644     check_cflags -fdiagnostics-color=auto
6645     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6646     if enabled x86_32; then
6647         case $target_os in
6648         *bsd*)
6649             # BSDs don't guarantee a 16 byte aligned stack, but we can
6650             # request GCC to try to maintain 16 byte alignment throughout
6651             # function calls. Library entry points that might call assembly
6652             # functions align the stack. (The parameter means 2^4 bytes.)
6653             check_cflags -mpreferred-stack-boundary=4
6654             ;;
6655         esac
6656     fi
6657 elif enabled llvm_gcc; then
6658     check_cflags -mllvm -stack-alignment=16
6659 elif enabled clang; then
6660     if enabled x86_32; then
6661         # Clang doesn't support maintaining alignment without assuming the
6662         # same alignment in every function. If 16 byte alignment would be
6663         # enabled, one would also have to either add attribute_align_arg on
6664         # every single entry point into the libraries or enable -mstackrealign
6665         # (doing stack realignment in every single function).
6666         case $target_os in
6667         mingw32|win32|*bsd*)
6668             disable aligned_stack
6669             ;;
6670         *)
6671             check_cflags -mllvm -stack-alignment=16
6672             check_cflags -mstack-alignment=16
6673             ;;
6674         esac
6675     else
6676         check_cflags -mllvm -stack-alignment=16
6677         check_cflags -mstack-alignment=16
6678     fi
6679     check_cflags -Qunused-arguments
6680     check_cflags -Werror=implicit-function-declaration
6681     check_cflags -Werror=missing-prototypes
6682     check_cflags -Werror=return-type
6683 elif enabled cparser; then
6684     add_cflags -Wno-missing-variable-declarations
6685     add_cflags -Wno-empty-statement
6686 elif enabled armcc; then
6687     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6688     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6689     # 2523: use of inline assembly is deprecated
6690     add_cflags -W${armcc_opt},--diag_suppress=2523
6691     add_cflags -W${armcc_opt},--diag_suppress=1207
6692     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6693     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6694     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6695     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6696 elif enabled pathscale; then
6697     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6698     disable inline_asm
6699 elif enabled_any msvc icl; then
6700     enabled x86_32 && disable aligned_stack
6701     enabled_all x86_32 debug && add_cflags -Oy-
6702     enabled debug && add_ldflags -debug
6703     enable pragma_deprecated
6704     if enabled icl; then
6705         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6706         # (correctly) on icl 13.x.
6707         test_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6708             add_cflags -Qansi-alias
6709         # Some inline asm is not compilable in debug
6710         if enabled debug; then
6711             disable ebp_available
6712             disable ebx_available
6713         fi
6714     fi
6715     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6716     check_cpp_condition log2 crtversion.h "_VC_CRT_MAJOR_VERSION >= 12"
6717     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6718     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6719     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6720     # MSVC 2013 and newer can handle it fine.
6721     # If this declspec fails, force including stdlib.h before the restrict redefinition
6722     # happens in config.h.
6723     if [ $restrict_keyword != restrict ]; then
6724         test_cc <<EOF || add_cflags -FIstdlib.h
6725 __declspec($restrict_keyword) void *foo(int);
6726 EOF
6727     fi
6728     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6729     # Issue has been fixed in MSVC v19.00.24218.
6730     test_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6731         check_cflags -d2SSAOptimizer-
6732     # enable utf-8 source processing on VS2015 U2 and newer
6733     test_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6734         add_cflags -utf-8
6735 fi
6736
6737 for pfx in "" host_; do
6738     varname=${pfx%_}cc_type
6739     eval "type=\$$varname"
6740     if [ "$type" = "msvc" ]; then
6741         test_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6742 static inline int foo(int a) { return a; }
6743 EOF
6744     fi
6745 done
6746
6747 case $as_type in
6748     clang)
6749         add_asflags -Qunused-arguments
6750     ;;
6751 esac
6752
6753 case $ld_type in
6754     clang)
6755         check_ldflags -Qunused-arguments
6756     ;;
6757 esac
6758
6759 enable frame_thread_encoder
6760
6761 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6762
6763 check_deps $CONFIG_LIST       \
6764            $CONFIG_EXTRA      \
6765            $HAVE_LIST         \
6766            $ALL_COMPONENTS    \
6767
6768 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"
6769 enabled avresample && warn "Building with deprecated library libavresample"
6770
6771 if test $target_os = "haiku"; then
6772     disable memalign
6773     disable posix_memalign
6774 fi
6775
6776 flatten_extralibs(){
6777     nested_entries=
6778     list_name=$1
6779     eval list=\$${1}
6780     for entry in $list; do
6781         entry_copy=$entry
6782         resolve entry_copy
6783         flat_entries=
6784         for e in $entry_copy; do
6785             case $e in
6786                 *_extralibs) nested_entries="$nested_entries$e ";;
6787                           *) flat_entries="$flat_entries$e ";;
6788             esac
6789         done
6790         eval $entry="\$flat_entries"
6791     done
6792     append $list_name "$nested_entries"
6793
6794     resolve nested_entries
6795     if test -n "$(filter '*_extralibs' $nested_entries)"; then
6796         flatten_extralibs $list_name
6797     fi
6798 }
6799
6800 flatten_extralibs_wrapper(){
6801     list_name=$1
6802     flatten_extralibs $list_name
6803     unique $list_name
6804     resolve $list_name
6805     eval $list_name=\$\(\$ldflags_filter \$$list_name\)
6806     eval printf \''%s'\' \""\$$list_name"\"
6807 }
6808
6809 for linkunit in $LIBRARY_LIST; do
6810     unset current_extralibs
6811     eval components=\$$(toupper ${linkunit})_COMPONENTS_LIST
6812     for comp in ${components}; do
6813         enabled $comp || continue
6814         comp_extralibs="${comp}_extralibs"
6815         append current_extralibs $comp_extralibs
6816     done
6817     eval prepend ${linkunit}_extralibs $current_extralibs
6818 done
6819
6820 for linkunit in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
6821     eval ${linkunit}_extralibs=\$\(flatten_extralibs_wrapper ${linkunit}_extralibs\)
6822 done
6823
6824 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6825
6826 for thread in $THREADS_LIST; do
6827     if enabled $thread; then
6828         test -n "$thread_type" &&
6829             die "ERROR: Only one thread type must be selected." ||
6830             thread_type="$thread"
6831     fi
6832 done
6833
6834 if disabled stdatomic; then
6835     if enabled atomics_gcc; then
6836         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
6837     elif enabled atomics_win32; then
6838         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
6839     elif enabled atomics_suncc; then
6840         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
6841     elif enabled pthreads; then
6842         add_compat atomics/pthread/stdatomic.o
6843         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
6844     else
6845         enabled threads && die "Threading is enabled, but no atomics are available"
6846         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
6847     fi
6848 fi
6849
6850 # Check if requested libraries were found.
6851 for lib in $AUTODETECT_LIBS; do
6852     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
6853 done
6854
6855 enabled zlib && add_cppflags -DZLIB_CONST
6856
6857 # conditional library dependencies, in any order
6858 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6859 enabled afir_filter         && prepend avfilter_deps "avcodec"
6860 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6861 enabled aresample_filter    && prepend avfilter_deps "swresample"
6862 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6863 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6864 enabled convolve_filter     && prepend avfilter_deps "avcodec"
6865 enabled deconvolve_filter   && prepend avfilter_deps "avcodec"
6866 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6867 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6868 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6869 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6870 enabled firequalizer_filter && prepend avfilter_deps "avcodec"
6871 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6872 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6873 enabled pan_filter          && prepend avfilter_deps "swresample"
6874 enabled pp_filter           && prepend avfilter_deps "postproc"
6875 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6876 enabled resample_filter && prepend avfilter_deps "avresample"
6877 enabled sab_filter          && prepend avfilter_deps "swscale"
6878 enabled scale_filter    && prepend avfilter_deps "swscale"
6879 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6880 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6881 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6882 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6883 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6884 enabled signature_filter    && prepend avfilter_deps "avcodec avformat"
6885 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6886 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6887 enabled spp_filter          && prepend avfilter_deps "avcodec"
6888 enabled sr_filter           && prepend avfilter_deps "avformat swscale"
6889 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6890 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6891 enabled zoompan_filter      && prepend avfilter_deps "swscale"
6892
6893 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6894
6895 #FIXME
6896 enabled sdl2_outdev     && add_cflags $(filter_out '-Dmain=SDL_main' $sdl2_cflags)
6897
6898 enabled opus_decoder    && prepend avcodec_deps "swresample"
6899
6900 # reorder the items at var $1 to align with the items order at var $2 .
6901 # die if an item at $1 is not at $2 .
6902 reorder_by(){
6903     eval rb_in=\$$1
6904     eval rb_ordered=\$$2
6905
6906     for rb in $rb_in; do
6907         is_in $rb $rb_ordered || die "$rb at \$$1 is not at \$$2"
6908     done
6909
6910     rb_out=
6911     for rb in $rb_ordered; do
6912         is_in $rb $rb_in && rb_out="$rb_out$rb "
6913     done
6914     eval $1=\$rb_out
6915 }
6916
6917 # deps-expand fflib $1:  N x {append all expanded deps; unique}
6918 # within a set of N items, N expansions are enough to expose a cycle.
6919 expand_deps(){
6920     unique ${1}_deps  # required for the early break test.
6921     for dummy in $LIBRARY_LIST; do  # N iteratios
6922         eval deps=\$${1}_deps
6923         append ${1}_deps $(map 'eval echo \$${v}_deps' $deps)
6924         unique ${1}_deps
6925         eval '[ ${#deps} = ${#'${1}_deps'} ]' && break  # doesn't expand anymore
6926     done
6927
6928     eval is_in $1 \$${1}_deps && die "Dependency cycle at ${1}_deps"
6929     reorder_by ${1}_deps LIBRARY_LIST  # linking order is expected later
6930 }
6931
6932 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6933 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6934
6935 map 'expand_deps $v' $LIBRARY_LIST
6936
6937 if test "$quiet" != "yes"; then
6938
6939 echo "install prefix            $prefix"
6940 echo "source path               $source_path"
6941 echo "C compiler                $cc"
6942 echo "C library                 $libc_type"
6943 if test "$host_cc" != "$cc"; then
6944     echo "host C compiler           $host_cc"
6945     echo "host C library            $host_libc_type"
6946 fi
6947 echo "ARCH                      $arch ($cpu)"
6948 if test "$build_suffix" != ""; then
6949     echo "build suffix              $build_suffix"
6950 fi
6951 if test "$progs_suffix" != ""; then
6952     echo "progs suffix              $progs_suffix"
6953 fi
6954 if test "$extra_version" != ""; then
6955     echo "version string suffix     $extra_version"
6956 fi
6957 echo "big-endian                ${bigendian-no}"
6958 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6959 if enabled x86; then
6960     echo "standalone assembly       ${x86asm-no}"
6961     echo "x86 assembler             ${x86asmexe}"
6962     echo "MMX enabled               ${mmx-no}"
6963     echo "MMXEXT enabled            ${mmxext-no}"
6964     echo "3DNow! enabled            ${amd3dnow-no}"
6965     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6966     echo "SSE enabled               ${sse-no}"
6967     echo "SSSE3 enabled             ${ssse3-no}"
6968     echo "AESNI enabled             ${aesni-no}"
6969     echo "AVX enabled               ${avx-no}"
6970     echo "AVX2 enabled              ${avx2-no}"
6971     echo "AVX-512 enabled           ${avx512-no}"
6972     echo "XOP enabled               ${xop-no}"
6973     echo "FMA3 enabled              ${fma3-no}"
6974     echo "FMA4 enabled              ${fma4-no}"
6975     echo "i686 features enabled     ${i686-no}"
6976     echo "CMOV is fast              ${fast_cmov-no}"
6977     echo "EBX available             ${ebx_available-no}"
6978     echo "EBP available             ${ebp_available-no}"
6979 fi
6980 if enabled aarch64; then
6981     echo "NEON enabled              ${neon-no}"
6982     echo "VFP enabled               ${vfp-no}"
6983 fi
6984 if enabled arm; then
6985     echo "ARMv5TE enabled           ${armv5te-no}"
6986     echo "ARMv6 enabled             ${armv6-no}"
6987     echo "ARMv6T2 enabled           ${armv6t2-no}"
6988     echo "VFP enabled               ${vfp-no}"
6989     echo "NEON enabled              ${neon-no}"
6990     echo "THUMB enabled             ${thumb-no}"
6991 fi
6992 if enabled mips; then
6993     echo "MIPS FPU enabled          ${mipsfpu-no}"
6994     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
6995     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
6996     echo "MIPS MSA enabled          ${msa-no}"
6997     echo "LOONGSON MMI enabled      ${mmi-no}"
6998 fi
6999 if enabled ppc; then
7000     echo "AltiVec enabled           ${altivec-no}"
7001     echo "VSX enabled               ${vsx-no}"
7002     echo "POWER8 enabled            ${power8-no}"
7003     echo "PPC 4xx optimizations     ${ppc4xx-no}"
7004     echo "dcbzl available           ${dcbzl-no}"
7005 fi
7006 echo "debug symbols             ${debug-no}"
7007 echo "strip symbols             ${stripping-no}"
7008 echo "optimize for size         ${small-no}"
7009 echo "optimizations             ${optimizations-no}"
7010 echo "static                    ${static-no}"
7011 echo "shared                    ${shared-no}"
7012 echo "postprocessing support    ${postproc-no}"
7013 echo "network support           ${network-no}"
7014 echo "threading support         ${thread_type-no}"
7015 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
7016 echo "texi2html enabled         ${texi2html-no}"
7017 echo "perl enabled              ${perl-no}"
7018 echo "pod2man enabled           ${pod2man-no}"
7019 echo "makeinfo enabled          ${makeinfo-no}"
7020 echo "makeinfo supports HTML    ${makeinfo_html-no}"
7021 test -n "$random_seed" &&
7022     echo "random seed               ${random_seed}"
7023 echo
7024
7025 echo "External libraries:"
7026 print_enabled '' $EXTERNAL_LIBRARY_LIST $EXTERNAL_AUTODETECT_LIBRARY_LIST | print_in_columns
7027 echo
7028
7029 echo "External libraries providing hardware acceleration:"
7030 print_enabled '' $HWACCEL_LIBRARY_LIST $HWACCEL_AUTODETECT_LIBRARY_LIST | print_in_columns
7031 echo
7032
7033 echo "Libraries:"
7034 print_enabled '' $LIBRARY_LIST | print_in_columns
7035 echo
7036
7037 echo "Programs:"
7038 print_enabled '' $PROGRAM_LIST | print_in_columns
7039 echo
7040
7041 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
7042     echo "Enabled ${type}s:"
7043     eval list=\$$(toupper $type)_LIST
7044     print_enabled '_*' $list | print_in_columns
7045     echo
7046 done
7047
7048 if test -n "$ignore_tests"; then
7049     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
7050     echo "Ignored FATE tests:"
7051     echo $ignore_tests | print_in_columns
7052     echo
7053 fi
7054
7055 echo "License: $license"
7056
7057 fi # test "$quiet" != "yes"
7058
7059 if test -n "$WARNINGS"; then
7060     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
7061     enabled fatal_warnings && exit 1
7062 fi
7063
7064 test -e Makefile || echo "include $source_path/Makefile" > Makefile
7065
7066 esc(){
7067     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
7068 }
7069
7070 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" > ffbuild/config.fate
7071
7072 enabled stripping || strip="echo skipping strip"
7073 enabled stripping || striptype=""
7074
7075 config_files="$TMPH ffbuild/config.mak doc/config.texi"
7076
7077 cat > ffbuild/config.mak <<EOF
7078 # Automatically generated by configure - do not modify!
7079 ifndef FFMPEG_CONFIG_MAK
7080 FFMPEG_CONFIG_MAK=1
7081 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
7082 prefix=$prefix
7083 LIBDIR=\$(DESTDIR)$libdir
7084 SHLIBDIR=\$(DESTDIR)$shlibdir
7085 INCDIR=\$(DESTDIR)$incdir
7086 BINDIR=\$(DESTDIR)$bindir
7087 DATADIR=\$(DESTDIR)$datadir
7088 DOCDIR=\$(DESTDIR)$docdir
7089 MANDIR=\$(DESTDIR)$mandir
7090 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
7091 INSTALL_NAME_DIR=$install_name_dir
7092 SRC_PATH=$source_path
7093 SRC_LINK=$source_link
7094 ifndef MAIN_MAKEFILE
7095 SRC_PATH:=\$(SRC_PATH:.%=..%)
7096 endif
7097 CC_IDENT=$cc_ident
7098 ARCH=$arch
7099 INTRINSICS=$intrinsics
7100 EXTERN_PREFIX=$extern_prefix
7101 CC=$cc
7102 CXX=$cxx
7103 AS=$as
7104 OBJCC=$objcc
7105 LD=$ld
7106 DEPCC=$dep_cc
7107 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
7108 DEPAS=$as
7109 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
7110 X86ASM=$x86asmexe
7111 DEPX86ASM=$x86asmexe
7112 DEPX86ASMFLAGS=\$(X86ASMFLAGS)
7113 AR=$ar
7114 ARFLAGS=$arflags
7115 AR_O=$ar_o
7116 AR_CMD=$ar
7117 NM_CMD=$nm
7118 RANLIB=$ranlib
7119 STRIP=$strip
7120 STRIPTYPE=$striptype
7121 NVCC=$nvcc
7122 CP=cp -p
7123 LN_S=$ln_s
7124 CPPFLAGS=$CPPFLAGS
7125 CFLAGS=$CFLAGS
7126 CXXFLAGS=$CXXFLAGS
7127 OBJCFLAGS=$OBJCFLAGS
7128 ASFLAGS=$ASFLAGS
7129 NVCCFLAGS=$nvccflags
7130 AS_C=$AS_C
7131 AS_O=$AS_O
7132 OBJCC_C=$OBJCC_C
7133 OBJCC_E=$OBJCC_E
7134 OBJCC_O=$OBJCC_O
7135 CC_C=$CC_C
7136 CC_E=$CC_E
7137 CC_O=$CC_O
7138 CXX_C=$CXX_C
7139 CXX_O=$CXX_O
7140 NVCC_C=$NVCC_C
7141 NVCC_O=$NVCC_O
7142 LD_O=$LD_O
7143 X86ASM_O=$X86ASM_O
7144 LD_LIB=$LD_LIB
7145 LD_PATH=$LD_PATH
7146 DLLTOOL=$dlltool
7147 WINDRES=$windres
7148 DEPWINDRES=$dep_cc
7149 DOXYGEN=$doxygen
7150 LDFLAGS=$LDFLAGS
7151 LDEXEFLAGS=$LDEXEFLAGS
7152 LDSOFLAGS=$LDSOFLAGS
7153 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
7154 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
7155 X86ASMFLAGS=$X86ASMFLAGS
7156 BUILDSUF=$build_suffix
7157 PROGSSUF=$progs_suffix
7158 FULLNAME=$FULLNAME
7159 LIBPREF=$LIBPREF
7160 LIBSUF=$LIBSUF
7161 LIBNAME=$LIBNAME
7162 SLIBPREF=$SLIBPREF
7163 SLIBSUF=$SLIBSUF
7164 EXESUF=$EXESUF
7165 EXTRA_VERSION=$extra_version
7166 CCDEP=$CCDEP
7167 CXXDEP=$CXXDEP
7168 CCDEP_FLAGS=$CCDEP_FLAGS
7169 ASDEP=$ASDEP
7170 ASDEP_FLAGS=$ASDEP_FLAGS
7171 X86ASMDEP=$X86ASMDEP
7172 X86ASMDEP_FLAGS=$X86ASMDEP_FLAGS
7173 CC_DEPFLAGS=$CC_DEPFLAGS
7174 AS_DEPFLAGS=$AS_DEPFLAGS
7175 X86ASM_DEPFLAGS=$X86ASM_DEPFLAGS
7176 HOSTCC=$host_cc
7177 HOSTLD=$host_ld
7178 HOSTCFLAGS=$host_cflags
7179 HOSTCPPFLAGS=$host_cppflags
7180 HOSTEXESUF=$HOSTEXESUF
7181 HOSTLDFLAGS=$host_ldflags
7182 HOSTEXTRALIBS=$host_extralibs
7183 DEPHOSTCC=$host_cc
7184 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
7185 HOSTCCDEP=$HOSTCCDEP
7186 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
7187 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
7188 HOSTCC_C=$HOSTCC_C
7189 HOSTCC_O=$HOSTCC_O
7190 HOSTLD_O=$HOSTLD_O
7191 TARGET_EXEC=$target_exec $target_exec_args
7192 TARGET_PATH=$target_path
7193 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
7194 CFLAGS-ffplay=${sdl2_cflags}
7195 CFLAGS_HEADERS=$CFLAGS_HEADERS
7196 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
7197 EXTRALIBS=$extralibs
7198 COMPAT_OBJS=$compat_objs
7199 INSTALL=$install
7200 LIBTARGET=${LIBTARGET}
7201 SLIBNAME=${SLIBNAME}
7202 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
7203 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
7204 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
7205 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
7206 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
7207 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
7208 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
7209 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
7210 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
7211 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
7212 NOREDZONE_FLAGS=$noredzone_flags
7213 LIBFUZZER_PATH=$libfuzzer_path
7214 IGNORE_TESTS=$ignore_tests
7215 EOF
7216
7217 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> ffbuild/config.mak' $LIBRARY_LIST
7218
7219 for entry in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
7220     eval echo "EXTRALIBS-${entry}=\$${entry}_extralibs" >> ffbuild/config.mak
7221 done
7222
7223 cat > $TMPH <<EOF
7224 /* Automatically generated by configure - do not modify! */
7225 #ifndef FFMPEG_CONFIG_H
7226 #define FFMPEG_CONFIG_H
7227 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
7228 #define FFMPEG_LICENSE "$(c_escape $license)"
7229 #define CONFIG_THIS_YEAR 2018
7230 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
7231 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
7232 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
7233 #define av_restrict $restrict_keyword
7234 #define EXTERN_PREFIX "${extern_prefix}"
7235 #define EXTERN_ASM ${extern_prefix}
7236 #define BUILDSUF "$build_suffix"
7237 #define SLIBSUF "$SLIBSUF"
7238 #define HAVE_MMX2 HAVE_MMXEXT
7239 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
7240 EOF
7241
7242 test -n "$assert_level" &&
7243     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
7244
7245 test -n "$malloc_prefix" &&
7246     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
7247
7248 if enabled x86asm; then
7249     append config_files $TMPASM
7250     cat > $TMPASM <<EOF
7251 ; Automatically generated by configure - do not modify!
7252 EOF
7253 fi
7254
7255 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
7256
7257
7258 mkdir -p doc
7259 mkdir -p tests
7260 mkdir -p tests/api
7261 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
7262
7263 print_config ARCH_   "$config_files" $ARCH_LIST
7264 print_config HAVE_   "$config_files" $HAVE_LIST
7265 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
7266                                      $CONFIG_EXTRA      \
7267                                      $ALL_COMPONENTS    \
7268
7269 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
7270 echo "endif # FFMPEG_CONFIG_MAK" >> ffbuild/config.mak
7271
7272 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
7273 cp_if_changed $TMPH config.h
7274 touch ffbuild/.config
7275
7276 enabled x86asm && cp_if_changed $TMPASM config.asm
7277
7278 cat > $TMPH <<EOF
7279 /* Generated by ffmpeg configure */
7280 #ifndef AVUTIL_AVCONFIG_H
7281 #define AVUTIL_AVCONFIG_H
7282 EOF
7283
7284 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
7285
7286 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
7287
7288 cp_if_changed $TMPH libavutil/avconfig.h
7289
7290 # full_filter_name_foo=vf_foo
7291 # full_filter_name_bar=asrc_bar
7292 # ...
7293 eval "$(sed -n "s/^extern AVFilter ff_\([avfsinkrc]\{2,5\}\)_\(.*\);/full_filter_name_\2=\1_\2/p" $source_path/libavfilter/allfilters.c)"
7294
7295 # generate the lists of enabled components
7296 print_enabled_components(){
7297     file=$1
7298     struct_name=$2
7299     name=$3
7300     shift 3
7301     echo "static const $struct_name * const $name[] = {" > $TMPH
7302     for c in $*; do
7303         if enabled $c; then
7304             case $name in
7305                 filter_list)
7306                     eval c=\$full_filter_name_${c%_filter}
7307                 ;;
7308                 indev_list)
7309                     c=${c%_indev}_demuxer
7310                 ;;
7311                 outdev_list)
7312                     c=${c%_outdev}_muxer
7313                 ;;
7314             esac
7315             printf "    &ff_%s,\n" $c >> $TMPH
7316         fi
7317     done
7318     if [ "$name" = "filter_list" ]; then
7319         for c in asrc_abuffer vsrc_buffer asink_abuffer vsink_buffer; do
7320             printf "    &ff_%s,\n" $c >> $TMPH
7321         done
7322     fi
7323     echo "    NULL };" >> $TMPH
7324     cp_if_changed $TMPH $file
7325 }
7326
7327 print_enabled_components libavfilter/filter_list.c AVFilter filter_list $FILTER_LIST
7328 print_enabled_components libavcodec/codec_list.c AVCodec codec_list $CODEC_LIST
7329 print_enabled_components libavcodec/parser_list.c AVCodecParser parser_list $PARSER_LIST
7330 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
7331 print_enabled_components libavformat/demuxer_list.c AVInputFormat demuxer_list $DEMUXER_LIST
7332 print_enabled_components libavformat/muxer_list.c AVOutputFormat muxer_list $MUXER_LIST
7333 print_enabled_components libavdevice/indev_list.c AVInputFormat indev_list $INDEV_LIST
7334 print_enabled_components libavdevice/outdev_list.c AVOutputFormat outdev_list $OUTDEV_LIST
7335 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
7336
7337 # Settings for pkg-config files
7338
7339 cat > $TMPH <<EOF
7340 # Automatically generated by configure - do not modify!
7341 shared=$shared
7342 build_suffix=$build_suffix
7343 prefix=$prefix
7344 libdir=$libdir
7345 incdir=$incdir
7346 rpath=$(enabled rpath && echo "-Wl,-rpath,\${libdir}")
7347 source_path=${source_path}
7348 LIBPREF=${LIBPREF}
7349 LIBSUF=${LIBSUF}
7350 extralibs_avutil="$avutil_extralibs"
7351 extralibs_avcodec="$avcodec_extralibs"
7352 extralibs_avformat="$avformat_extralibs"
7353 extralibs_avdevice="$avdevice_extralibs"
7354 extralibs_avfilter="$avfilter_extralibs"
7355 extralibs_avresample="$avresample_extralibs"
7356 extralibs_postproc="$postproc_extralibs"
7357 extralibs_swscale="$swscale_extralibs"
7358 extralibs_swresample="$swresample_extralibs"
7359 EOF
7360
7361 for lib in $LIBRARY_LIST; do
7362     lib_deps="$(eval echo \$${lib}_deps)"
7363     echo ${lib}_deps=\"$lib_deps\" >> $TMPH
7364 done
7365
7366 cp_if_changed $TMPH ffbuild/config.sh