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-libaribb24      enable ARIB text and caption decoding via libaribb24 [no]
 222   --enable-libass          enable libass subtitles rendering,
 223                            needed for subtitles and ass filter [no]
 224   --enable-libbluray       enable BluRay reading using libbluray [no]
 225   --enable-libbs2b         enable bs2b DSP library [no]
 226   --enable-libcaca         enable textual display using libcaca [no]
 227   --enable-libcelt         enable CELT decoding via libcelt [no]
 228   --enable-libcdio         enable audio CD grabbing with libcdio [no]
 229   --enable-libcodec2       enable codec2 en/decoding using libcodec2 [no]
 230   --enable-libdav1d        enable AV1 decoding via libdav1d [no]
 231   --enable-libdavs2        enable AVS2 decoding via libdavs2 [no]
 232   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 233                            and libraw1394 [no]
 234   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
 235   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
 236   --enable-libfontconfig   enable libfontconfig, useful for drawtext filter [no]
 237   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
 238   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
 239   --enable-libgme          enable Game Music Emu via libgme [no]
 240   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 241   --enable-libiec61883     enable iec61883 via libiec61883 [no]
 242   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 243   --enable-libjack         enable JACK audio sound server [no]
 244   --enable-libklvanc       enable Kernel Labs VANC processing [no]
 245   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
 246   --enable-liblensfun      enable lensfun lens correction [no]
 247   --enable-libmodplug      enable ModPlug via libmodplug [no]
 248   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 249   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 250   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 251   --enable-libopencv       enable video filtering via libopencv [no]
 252   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
 253   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 254   --enable-libopenmpt      enable decoding tracked files via libopenmpt [no]
 255   --enable-libopus         enable Opus de/encoding via libopus [no]
 256   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 257   --enable-librsvg         enable SVG rasterization via librsvg [no]
 258   --enable-librubberband   enable rubberband needed for rubberband filter [no]
 259   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 260   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 261   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
 262   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
 263   --enable-libsoxr         enable Include libsoxr resampling [no]
 264   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 265   --enable-libsrt          enable Haivision SRT protocol via libsrt [no]
 266   --enable-libssh          enable SFTP protocol via libssh [no]
 267   --enable-libtensorflow   enable TensorFlow as a DNN module backend
 268                            for DNN based filters like sr [no]
 269   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
 270   --enable-libtheora       enable Theora encoding via libtheora [no]
 271   --enable-libtls          enable LibreSSL (via libtls), needed for https support
 272                            if openssl, gnutls or mbedtls is not used [no]
 273   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 274   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 275   --enable-libvidstab      enable video stabilization using vid.stab [no]
 276   --enable-libvmaf         enable vmaf filter via libvmaf [no]
 277   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 278   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 279                            native implementation exists [no]
 280   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 281   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 282   --enable-libwebp         enable WebP encoding via libwebp [no]
 283   --enable-libx264         enable H.264 encoding via x264 [no]
 284   --enable-libx265         enable HEVC encoding via x265 [no]
 285   --enable-libxavs         enable AVS encoding via xavs [no]
 286   --enable-libxavs2        enable AVS2 encoding via xavs2 [no]
 287   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
 288   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
 289   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
 290   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
 291   --enable-libxvid         enable Xvid encoding via xvidcore,
 292                            native MPEG-4/Xvid encoder exists [no]
 293   --enable-libxml2         enable XML parsing using the C library libxml2, needed
 294                            for dash demuxing support [no]
 295   --enable-libzimg         enable z.lib, needed for zscale filter [no]
 296   --enable-libzmq          enable message passing via libzmq [no]
 297   --enable-libzvbi         enable teletext support via libzvbi [no]
 298   --enable-lv2             enable LV2 audio filtering [no]
 299   --disable-lzma           disable lzma [autodetect]
 300   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
 301   --enable-mbedtls         enable mbedTLS, needed for https support
 302                            if openssl, gnutls or libtls is not used [no]
 303   --enable-mediacodec      enable Android MediaCodec support [no]
 304   --enable-libmysofa       enable libmysofa, needed for sofalizer filter [no]
 305   --enable-openal          enable OpenAL 1.1 capture support [no]
 306   --enable-opencl          enable OpenCL processing [no]
 307   --enable-opengl          enable OpenGL rendering [no]
 308   --enable-openssl         enable openssl, needed for https support
 309                            if gnutls, libtls or mbedtls is not used [no]
 310   --disable-sndio          disable sndio support [autodetect]
 311   --disable-schannel       disable SChannel SSP, needed for TLS support on
 312                            Windows if openssl and gnutls are not used [autodetect]
 313   --disable-sdl2           disable sdl2 [autodetect]
 314   --disable-securetransport disable Secure Transport, needed for TLS support
 315                            on OSX if openssl and gnutls are not used [autodetect]
 316   --enable-vapoursynth     enable VapourSynth demuxer [no]
 317   --disable-xlib           disable xlib [autodetect]
 318   --disable-zlib           disable zlib [autodetect]
 319
 320   The following libraries provide various hardware acceleration features:
 321   --disable-amf            disable AMF video encoding code [autodetect]
 322   --disable-audiotoolbox   disable Apple AudioToolbox code [autodetect]
 323   --enable-cuda-nvcc       enable Nvidia CUDA compiler [no]
 324   --disable-cuvid          disable Nvidia CUVID support [autodetect]
 325   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
 326   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
 327   --disable-ffnvcodec      disable dynamically linked Nvidia code [autodetect]
 328   --enable-libdrm          enable DRM code (Linux) [no]
 329   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
 330   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
 331   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
 332   --disable-nvdec          disable Nvidia video decoding acceleration (via hwaccel) [autodetect]
 333   --disable-nvenc          disable Nvidia video encoding code [autodetect]
 334   --enable-omx             enable OpenMAX IL code [no]
 335   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
 336   --enable-rkmpp           enable Rockchip Media Process Platform code [no]
 337   --disable-v4l2-m2m       disable V4L2 mem2mem code [autodetect]
 338   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
 339   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
 340   --disable-videotoolbox   disable VideoToolbox code [autodetect]
 341
 342 Toolchain options:
 343   --arch=ARCH              select architecture [$arch]
 344   --cpu=CPU                select the minimum required CPU (affects
 345                            instruction selection, may crash on older CPUs)
 346   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 347   --progs-suffix=SUFFIX    program name suffix []
 348   --enable-cross-compile   assume a cross-compiler is used
 349   --sysroot=PATH           root of cross-build tree
 350   --sysinclude=PATH        location of cross-build system headers
 351   --target-os=OS           compiler targets OS [$target_os]
 352   --target-exec=CMD        command to run executables on target
 353   --target-path=DIR        path to view of build directory on target
 354   --target-samples=DIR     path to samples directory on target
 355   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 356   --toolchain=NAME         set tool defaults according to NAME
 357                            (gcc-asan, clang-asan, gcc-msan, clang-msan,
 358                            gcc-tsan, clang-tsan, gcc-usan, clang-usan,
 359                            valgrind-massif, valgrind-memcheck,
 360                            msvc, icl, gcov, llvm-cov, hardened)
 361   --nm=NM                  use nm tool NM [$nm_default]
 362   --ar=AR                  use archive tool AR [$ar_default]
 363   --as=AS                  use assembler AS [$as_default]
 364   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
 365   --strip=STRIP            use strip tool STRIP [$strip_default]
 366   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 367   --x86asmexe=EXE          use nasm-compatible assembler EXE [$x86asmexe_default]
 368   --cc=CC                  use C compiler CC [$cc_default]
 369   --cxx=CXX                use C compiler CXX [$cxx_default]
 370   --objcc=OCC              use ObjC compiler OCC [$cc_default]
 371   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 372   --nvcc=NVCC              use Nvidia CUDA compiler NVCC [$nvcc_default]
 373   --ld=LD                  use linker LD [$ld_default]
 374   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 375   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 376   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 377   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
 378   --host-cc=HOSTCC         use host C compiler HOSTCC
 379   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 380   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 381   --host-ld=HOSTLD         use host linker HOSTLD
 382   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 383   --host-extralibs=HLIBS   use libs HLIBS when linking for host
 384   --host-os=OS             compiler host OS [$target_os]
 385   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 386   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 387   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
 388   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 389   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 390   --extra-ldsoflags=ELDFLAGS add ELDFLAGS to LDSOFLAGS [$LDSOFLAGS]
 391   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 392   --extra-version=STRING   version string suffix []
 393   --optflags=OPTFLAGS      override optimization-related compiler flags
 394   --nvccflags=NVCCFLAGS    override nvcc flags [$nvccflags_default]
 395   --build-suffix=SUFFIX    library name suffix []
 396   --enable-pic             build position-independent code
 397   --enable-thumb           compile for Thumb instruction set
 398   --enable-lto             use link-time optimization
 399   --env="ENV=override"     override the environment variables
 400
 401 Advanced options (experts only):
 402   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 403   --custom-allocator=NAME  use a supported custom allocator
 404   --disable-symver         disable symbol versioning
 405   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 406   --disable-safe-bitstream-reader
 407                            disable buffer boundary checking in bitreaders
 408                            (faster, but may crash)
 409   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
 410
 411 Optimization options (experts only):
 412   --disable-asm            disable all assembly optimizations
 413   --disable-altivec        disable AltiVec optimizations
 414   --disable-vsx            disable VSX optimizations
 415   --disable-power8         disable POWER8 optimizations
 416   --disable-amd3dnow       disable 3DNow! optimizations
 417   --disable-amd3dnowext    disable 3DNow! extended optimizations
 418   --disable-mmx            disable MMX optimizations
 419   --disable-mmxext         disable MMXEXT optimizations
 420   --disable-sse            disable SSE optimizations
 421   --disable-sse2           disable SSE2 optimizations
 422   --disable-sse3           disable SSE3 optimizations
 423   --disable-ssse3          disable SSSE3 optimizations
 424   --disable-sse4           disable SSE4 optimizations
 425   --disable-sse42          disable SSE4.2 optimizations
 426   --disable-avx            disable AVX optimizations
 427   --disable-xop            disable XOP optimizations
 428   --disable-fma3           disable FMA3 optimizations
 429   --disable-fma4           disable FMA4 optimizations
 430   --disable-avx2           disable AVX2 optimizations
 431   --disable-avx512         disable AVX-512 optimizations
 432   --disable-aesni          disable AESNI optimizations
 433   --disable-armv5te        disable armv5te optimizations
 434   --disable-armv6          disable armv6 optimizations
 435   --disable-armv6t2        disable armv6t2 optimizations
 436   --disable-vfp            disable VFP optimizations
 437   --disable-neon           disable NEON optimizations
 438   --disable-inline-asm     disable use of inline assembly
 439   --disable-x86asm         disable use of standalone x86 assembly
 440   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
 441   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 442   --disable-msa            disable MSA optimizations
 443   --disable-mipsfpu        disable floating point MIPS optimizations
 444   --disable-mmi            disable Loongson SIMD optimizations
 445   --disable-fast-unaligned consider unaligned accesses slow
 446
 447 Developer options (useful when working on FFmpeg itself):
 448   --disable-debug          disable debugging symbols
 449   --enable-debug=LEVEL     set the debug level [$debuglevel]
 450   --disable-optimizations  disable compiler optimizations
 451   --enable-extra-warnings  enable more compiler warnings
 452   --disable-stripping      disable stripping of executables and shared libraries
 453   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 454                            2 causes a slowdown at runtime.
 455   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 456   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 457                            leaks and errors, using the specified valgrind binary.
 458                            Cannot be combined with --target-exec
 459   --enable-ftrapv          Trap arithmetic overflows
 460   --samples=PATH           location of test samples for FATE, if not set use
 461                            \$FATE_SAMPLES at make invocation time.
 462   --enable-neon-clobber-test check NEON registers for clobbering (should be
 463                            used only for debugging purposes)
 464   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 465                            should be used only for debugging purposes)
 466   --enable-random          randomly enable/disable components
 467   --disable-random
 468   --enable-random=LIST     randomly enable/disable specific components or
 469   --disable-random=LIST    component groups. LIST is a comma-separated list
 470                            of NAME[:PROB] entries where NAME is a component
 471                            (group) and PROB the probability associated with
 472                            NAME (default 0.5).
 473   --random-seed=VALUE      seed value for --enable/disable-random
 474   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 475                            (only applies to --disable-optimizations builds)
 476   --enable-ossfuzz         Enable building fuzzer tool
 477   --libfuzzer=PATH         path to libfuzzer
 478   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
 479                            in the name) of tests whose result is ignored
 480   --enable-linux-perf      enable Linux Performance Monitor API
 481
 482 NOTE: Object files are built at the place where configure is launched.
 483 EOF
 484   exit 0
 485 }
 486
 487 if test -t 1 && which tput >/dev/null 2>&1; then
 488     ncolors=$(tput colors)
 489     if test -n "$ncolors" && test $ncolors -ge 8; then
 490         bold_color=$(tput bold)
 491         warn_color=$(tput setaf 3)
 492         error_color=$(tput setaf 1)
 493         reset_color=$(tput sgr0)
 494     fi
 495     # 72 used instead of 80 since that's the default of pr
 496     ncols=$(tput cols)
 497 fi
 498 : ${ncols:=72}
 499
 500 log(){
 501     echo "$@" >> $logfile
 502 }
 503
 504 log_file(){
 505     log BEGIN $1
 506     pr -n -t $1 >> $logfile
 507     log END $1
 508 }
 509
 510 warn(){
 511     log "WARNING: $*"
 512     WARNINGS="${WARNINGS}WARNING: $*\n"
 513 }
 514
 515 die(){
 516     log "$@"
 517     echo "$error_color$bold_color$@$reset_color"
 518     cat <<EOF
 519
 520 If you think configure made a mistake, make sure you are using the latest
 521 version from Git.  If the latest version fails, report the problem to the
 522 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 523 EOF
 524     if disabled logging; then
 525         cat <<EOF
 526 Rerun configure with logging enabled (do not use --disable-logging), and
 527 include the log this produces with your report.
 528 EOF
 529     else
 530         cat <<EOF
 531 Include the log file "$logfile" produced by configure as this will help
 532 solve the problem.
 533 EOF
 534     fi
 535     exit 1
 536 }
 537
 538 # Avoid locale weirdness, besides we really just want to translate ASCII.
 539 toupper(){
 540     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 541 }
 542
 543 tolower(){
 544     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 545 }
 546
 547 c_escape(){
 548     echo "$*" | sed 's/["\\]/\\\0/g'
 549 }
 550
 551 sh_quote(){
 552     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 553     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 554     echo "$v"
 555 }
 556
 557 cleanws(){
 558     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
 559 }
 560
 561 filter(){
 562     pat=$1
 563     shift
 564     for v; do
 565         eval "case '$v' in $pat) printf '%s ' '$v' ;; esac"
 566     done
 567 }
 568
 569 filter_out(){
 570     pat=$1
 571     shift
 572     for v; do
 573         eval "case '$v' in $pat) ;; *) printf '%s ' '$v' ;; esac"
 574     done
 575 }
 576
 577 map(){
 578     m=$1
 579     shift
 580     for v; do eval $m; done
 581 }
 582
 583 add_suffix(){
 584     suffix=$1
 585     shift
 586     for v; do echo ${v}${suffix}; done
 587 }
 588
 589 remove_suffix(){
 590     suffix=$1
 591     shift
 592     for v; do echo ${v%$suffix}; done
 593 }
 594
 595 set_all(){
 596     value=$1
 597     shift
 598     for var in $*; do
 599         eval $var=$value
 600     done
 601 }
 602
 603 set_weak(){
 604     value=$1
 605     shift
 606     for var; do
 607         eval : \${$var:=$value}
 608     done
 609 }
 610
 611 sanitize_var_name(){
 612     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 613 }
 614
 615 set_sanitized(){
 616     var=$1
 617     shift
 618     eval $(sanitize_var_name "$var")='$*'
 619 }
 620
 621 get_sanitized(){
 622     eval echo \$$(sanitize_var_name "$1")
 623 }
 624
 625 pushvar(){
 626     for pvar in $*; do
 627         eval level=\${${pvar}_level:=0}
 628         eval ${pvar}_${level}="\$$pvar"
 629         eval ${pvar}_level=$(($level+1))
 630     done
 631 }
 632
 633 popvar(){
 634     for pvar in $*; do
 635         eval level=\${${pvar}_level:-0}
 636         test $level = 0 && continue
 637         eval level=$(($level-1))
 638         eval $pvar="\${${pvar}_${level}}"
 639         eval ${pvar}_level=$level
 640         eval unset ${pvar}_${level}
 641     done
 642 }
 643
 644 request(){
 645     for var in $*; do
 646         eval ${var}_requested=yes
 647         eval $var=
 648     done
 649 }
 650
 651 warn_if_gets_disabled(){
 652     for var in $*; do
 653         WARN_IF_GETS_DISABLED_LIST="$WARN_IF_GETS_DISABLED_LIST $var"
 654     done
 655 }
 656
 657 enable(){
 658     set_all yes $*
 659 }
 660
 661 disable(){
 662     set_all no $*
 663 }
 664
 665 disable_with_reason(){
 666     disable $1
 667     eval "${1}_disable_reason=\"$2\""
 668     if requested $1; then
 669         die "ERROR: $1 requested, but $2"
 670     fi
 671 }
 672
 673 enable_weak(){
 674     set_weak yes $*
 675 }
 676
 677 disable_weak(){
 678     set_weak no $*
 679 }
 680
 681 enable_sanitized(){
 682     for var; do
 683         enable $(sanitize_var_name $var)
 684     done
 685 }
 686
 687 disable_sanitized(){
 688     for var; do
 689         disable $(sanitize_var_name $var)
 690     done
 691 }
 692
 693 do_enable_deep(){
 694     for var; do
 695         enabled $var && continue
 696         set -- $var
 697         eval enable_deep \$${var}_select
 698         var=$1
 699         eval enable_deep_weak \$${var}_suggest
 700     done
 701 }
 702
 703 enable_deep(){
 704     do_enable_deep $*
 705     enable $*
 706 }
 707
 708 enable_deep_weak(){
 709     for var; do
 710         disabled $var && continue
 711         set -- $var
 712         do_enable_deep $var
 713         var=$1
 714         enable_weak $var
 715     done
 716 }
 717
 718 requested(){
 719     test "${1#!}" = "$1" && op="=" || op="!="
 720     eval test "x\$${1#!}_requested" $op "xyes"
 721 }
 722
 723 enabled(){
 724     test "${1#!}" = "$1" && op="=" || op="!="
 725     eval test "x\$${1#!}" $op "xyes"
 726 }
 727
 728 disabled(){
 729     test "${1#!}" = "$1" && op="=" || op="!="
 730     eval test "x\$${1#!}" $op "xno"
 731 }
 732
 733 enabled_all(){
 734     for opt; do
 735         enabled $opt || return 1
 736     done
 737 }
 738
 739 disabled_all(){
 740     for opt; do
 741         disabled $opt || return 1
 742     done
 743 }
 744
 745 enabled_any(){
 746     for opt; do
 747         enabled $opt && return 0
 748     done
 749 }
 750
 751 disabled_any(){
 752     for opt; do
 753         disabled $opt && return 0
 754     done
 755     return 1
 756 }
 757
 758 set_default(){
 759     for opt; do
 760         eval : \${$opt:=\$${opt}_default}
 761     done
 762 }
 763
 764 is_in(){
 765     value=$1
 766     shift
 767     for var in $*; do
 768         [ $var = $value ] && return 0
 769     done
 770     return 1
 771 }
 772
 773 # The cfg loop is very hot (several thousands iterations), and in bash also
 774 # potentialy quite slow. Try to abort the iterations early, preferably without
 775 # calling functions. 70%+ of the time cfg is already done or without deps.
 776 check_deps(){
 777     for cfg; do
 778         eval [ x\$${cfg}_checking = xdone ] && continue
 779         eval [ x\$${cfg}_checking = xinprogress ] && die "Circular dependency for $cfg."
 780
 781         eval "
 782         dep_all=\$${cfg}_deps
 783         dep_any=\$${cfg}_deps_any
 784         dep_con=\$${cfg}_conflict
 785         dep_sel=\$${cfg}_select
 786         dep_sgs=\$${cfg}_suggest
 787         dep_ifa=\$${cfg}_if
 788         dep_ifn=\$${cfg}_if_any
 789         "
 790
 791         # most of the time here $cfg has no deps - avoid costly no-op work
 792         if [ "$dep_all$dep_any$dep_con$dep_sel$dep_sgs$dep_ifa$dep_ifn" ]; then
 793             eval ${cfg}_checking=inprogress
 794
 795             set -- $cfg "$dep_all" "$dep_any" "$dep_con" "$dep_sel" "$dep_sgs" "$dep_ifa" "$dep_ifn"
 796             check_deps $dep_all $dep_any $dep_con $dep_sel $dep_sgs $dep_ifa $dep_ifn
 797             cfg=$1; dep_all=$2; dep_any=$3; dep_con=$4; dep_sel=$5 dep_sgs=$6; dep_ifa=$7; dep_ifn=$8
 798
 799             [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 800             [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 801             enabled_all  $dep_all || { disable_with_reason $cfg "not all dependencies are satisfied: $dep_all"; }
 802             enabled_any  $dep_any || { disable_with_reason $cfg "not any dependency is satisfied: $dep_any"; }
 803             disabled_all $dep_con || { disable_with_reason $cfg "some conflicting dependencies are unsatisfied: $dep_con"; }
 804             disabled_any $dep_sel && { disable_with_reason $cfg "some selected dependency is unsatisfied: $dep_sel"; }
 805
 806             enabled $cfg && enable_deep_weak $dep_sel $dep_sgs
 807
 808             for dep in $dep_all $dep_any $dep_sel $dep_sgs; do
 809                 # filter out library deps, these do not belong in extralibs
 810                 is_in $dep $LIBRARY_LIST && continue
 811                 enabled $dep && eval append ${cfg}_extralibs ${dep}_extralibs
 812             done
 813         fi
 814
 815         eval ${cfg}_checking=done
 816     done
 817 }
 818
 819 print_config(){
 820     pfx=$1
 821     files=$2
 822     shift 2
 823     map 'eval echo "$v \${$v:-no}"' "$@" |
 824     awk "BEGIN { split(\"$files\", files) }
 825         {
 826             c = \"$pfx\" toupper(\$1);
 827             v = \$2;
 828             sub(/yes/, 1, v);
 829             sub(/no/,  0, v);
 830             for (f in files) {
 831                 file = files[f];
 832                 if (file ~ /\\.h\$/) {
 833                     printf(\"#define %s %d\\n\", c, v) >>file;
 834                 } else if (file ~ /\\.asm\$/) {
 835                     printf(\"%%define %s %d\\n\", c, v) >>file;
 836                 } else if (file ~ /\\.mak\$/) {
 837                     n = -v ? \"\" : \"!\";
 838                     printf(\"%s%s=yes\\n\", n, c) >>file;
 839                 } else if (file ~ /\\.texi\$/) {
 840                     pre = -v ? \"\" : \"@c \";
 841                     yesno = \$2;
 842                     c2 = tolower(c);
 843                     gsub(/_/, \"-\", c2);
 844                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 845                 }
 846             }
 847         }"
 848 }
 849
 850 print_enabled(){
 851     suf=$1
 852     shift
 853     for v; do
 854         enabled $v && printf "%s\n" ${v%$suf}
 855     done
 856 }
 857
 858 append(){
 859     var=$1
 860     shift
 861     eval "$var=\"\$$var $*\""
 862 }
 863
 864 prepend(){
 865     var=$1
 866     shift
 867     eval "$var=\"$* \$$var\""
 868 }
 869
 870 reverse () {
 871     eval '
 872         reverse_out=
 873         for v in $'$1'; do
 874             reverse_out="$v $reverse_out"
 875         done
 876         '$1'=$reverse_out
 877     '
 878 }
 879
 880 # keeps the last occurence of each non-unique item
 881 unique(){
 882     unique_out=
 883     eval unique_in=\$$1
 884     reverse unique_in
 885     for v in $unique_in; do
 886         # " $unique_out" +space such that every item is surrounded with spaces
 887         case " $unique_out" in *" $v "*) continue; esac  # already in list
 888         unique_out="$unique_out$v "
 889     done
 890     reverse unique_out
 891     eval $1=\$unique_out
 892 }
 893
 894 resolve(){
 895     resolve_out=
 896     eval resolve_in=\$$1
 897     for v in $resolve_in; do
 898         eval 'resolve_out="$resolve_out$'$v' "'
 899     done
 900     eval $1=\$resolve_out
 901 }
 902
 903 add_cppflags(){
 904     append CPPFLAGS "$@"
 905 }
 906
 907 add_cflags(){
 908     append CFLAGS $($cflags_filter "$@")
 909 }
 910
 911 add_cflags_headers(){
 912     append CFLAGS_HEADERS $($cflags_filter "$@")
 913 }
 914
 915 add_cxxflags(){
 916     append CXXFLAGS $($cflags_filter "$@")
 917 }
 918
 919 add_objcflags(){
 920     append OBJCFLAGS $($objcflags_filter "$@")
 921 }
 922
 923 add_asflags(){
 924     append ASFLAGS $($asflags_filter "$@")
 925 }
 926
 927 add_ldflags(){
 928     append LDFLAGS $($ldflags_filter "$@")
 929 }
 930
 931 add_ldexeflags(){
 932     append LDEXEFLAGS $($ldflags_filter "$@")
 933 }
 934
 935 add_ldsoflags(){
 936     append LDSOFLAGS $($ldflags_filter "$@")
 937 }
 938
 939 add_extralibs(){
 940     prepend extralibs $($ldflags_filter "$@")
 941 }
 942
 943 add_stripflags(){
 944     append ASMSTRIPFLAGS "$@"
 945 }
 946
 947 add_host_cppflags(){
 948     append host_cppflags "$@"
 949 }
 950
 951 add_host_cflags(){
 952     append host_cflags $($host_cflags_filter "$@")
 953 }
 954
 955 add_host_ldflags(){
 956     append host_ldflags $($host_ldflags_filter "$@")
 957 }
 958
 959 add_compat(){
 960     append compat_objs $1
 961     shift
 962     map 'add_cppflags -D$v' "$@"
 963 }
 964
 965 test_cmd(){
 966     log "$@"
 967     "$@" >> $logfile 2>&1
 968 }
 969
 970 test_stat(){
 971     log test_stat "$@"
 972     stat "$1" >> $logfile 2>&1
 973 }
 974
 975 cc_e(){
 976     eval printf '%s\\n' $CC_E
 977 }
 978
 979 cc_o(){
 980     eval printf '%s\\n' $CC_O
 981 }
 982
 983 as_o(){
 984     eval printf '%s\\n' $AS_O
 985 }
 986
 987 x86asm_o(){
 988     eval printf '%s\\n' $X86ASM_O
 989 }
 990
 991 ld_o(){
 992     eval printf '%s\\n' $LD_O
 993 }
 994
 995 hostcc_e(){
 996     eval printf '%s\\n' $HOSTCC_E
 997 }
 998
 999 hostcc_o(){
1000     eval printf '%s\\n' $HOSTCC_O
1001 }
1002
1003 nvcc_o(){
1004     eval printf '%s\\n' $NVCC_O
1005 }
1006
1007 test_cc(){
1008     log test_cc "$@"
1009     cat > $TMPC
1010     log_file $TMPC
1011     test_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
1012 }
1013
1014 test_cxx(){
1015     log test_cxx "$@"
1016     cat > $TMPCPP
1017     log_file $TMPCPP
1018     test_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
1019 }
1020
1021 test_objcc(){
1022     log test_objcc "$@"
1023     cat > $TMPM
1024     log_file $TMPM
1025     test_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
1026 }
1027
1028 test_nvcc(){
1029     log test_nvcc "$@"
1030     cat > $TMPCU
1031     log_file $TMPCU
1032     tmpcu_=$TMPCU
1033     tmpo_=$TMPO
1034     [ -x "$(command -v cygpath)" ] && tmpcu_=$(cygpath -m $tmpcu_) && tmpo_=$(cygpath -m $tmpo_)
1035     test_cmd $nvcc -ptx $NVCCFLAGS "$@" $NVCC_C $(nvcc_o $tmpo_) $tmpcu_
1036 }
1037
1038 check_nvcc() {
1039     log check_nvcc "$@"
1040     test_nvcc <<EOF
1041 extern "C" {
1042     __global__ void hello(unsigned char *data) {}
1043 }
1044 EOF
1045 }
1046
1047 test_cpp(){
1048     log test_cpp "$@"
1049     cat > $TMPC
1050     log_file $TMPC
1051     test_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
1052 }
1053
1054 test_as(){
1055     log test_as "$@"
1056     cat > $TMPS
1057     log_file $TMPS
1058     test_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
1059 }
1060
1061 test_x86asm(){
1062     log test_x86asm "$@"
1063     echo "$1" > $TMPASM
1064     log_file $TMPASM
1065     shift
1066     test_cmd $x86asmexe $X86ASMFLAGS -Werror "$@" $(x86asm_o $TMPO) $TMPASM
1067 }
1068
1069 check_cmd(){
1070     log check_cmd "$@"
1071     cmd=$1
1072     disabled $cmd && return
1073     disable $cmd
1074     test_cmd $@ && enable $cmd
1075 }
1076
1077 check_as(){
1078     log check_as "$@"
1079     name=$1
1080     code=$2
1081     shift 2
1082     disable $name
1083     test_as $@ <<EOF && enable $name
1084 $code
1085 EOF
1086 }
1087
1088 check_inline_asm(){
1089     log check_inline_asm "$@"
1090     name="$1"
1091     code="$2"
1092     shift 2
1093     disable $name
1094     test_cc "$@" <<EOF && enable $name
1095 void foo(void){ __asm__ volatile($code); }
1096 EOF
1097 }
1098
1099 check_inline_asm_flags(){
1100     log check_inline_asm_flags "$@"
1101     name="$1"
1102     code="$2"
1103     flags=''
1104     shift 2
1105     while [ "$1" != "" ]; do
1106       append flags $1
1107       shift
1108     done;
1109     disable $name
1110     cat > $TMPC <<EOF
1111 void foo(void){ __asm__ volatile($code); }
1112 EOF
1113     log_file $TMPC
1114     test_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
1115     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
1116 }
1117
1118 check_insn(){
1119     log check_insn "$@"
1120     check_inline_asm ${1}_inline "\"$2\""
1121     check_as ${1}_external "$2"
1122 }
1123
1124 check_x86asm(){
1125     log check_x86asm "$@"
1126     name=$1
1127     shift
1128     disable $name
1129     test_x86asm "$@" && enable $name
1130 }
1131
1132 test_ld(){
1133     log test_ld "$@"
1134     type=$1
1135     shift 1
1136     flags=$(filter_out '-l*|*.so' $@)
1137     libs=$(filter '-l*|*.so' $@)
1138     test_$type $($cflags_filter $flags) || return
1139     flags=$($ldflags_filter $flags)
1140     libs=$($ldflags_filter $libs)
1141     test_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
1142 }
1143
1144 check_ld(){
1145     log check_ld "$@"
1146     type=$1
1147     name=$2
1148     shift 2
1149     disable $name
1150     test_ld $type $@ && enable $name
1151 }
1152
1153 print_include(){
1154     hdr=$1
1155     test "${hdr%.h}" = "${hdr}" &&
1156         echo "#include $hdr"    ||
1157         echo "#include <$hdr>"
1158 }
1159
1160 test_code(){
1161     log test_code "$@"
1162     check=$1
1163     headers=$2
1164     code=$3
1165     shift 3
1166     {
1167         for hdr in $headers; do
1168             print_include $hdr
1169         done
1170         echo "int main(void) { $code; return 0; }"
1171     } | test_$check "$@"
1172 }
1173
1174 check_cppflags(){
1175     log check_cppflags "$@"
1176     test_cpp "$@" <<EOF && append CPPFLAGS "$@"
1177 #include <stdlib.h>
1178 EOF
1179 }
1180
1181 test_cflags(){
1182     log test_cflags "$@"
1183     set -- $($cflags_filter "$@")
1184     test_cc "$@" <<EOF
1185 int x;
1186 EOF
1187 }
1188
1189 check_cflags(){
1190     log check_cflags "$@"
1191     test_cflags "$@" && add_cflags "$@"
1192 }
1193
1194 check_cxxflags(){
1195     log check_cxxflags "$@"
1196     set -- $($cflags_filter "$@")
1197     test_cxx "$@" <<EOF && append CXXFLAGS "$@"
1198 int x;
1199 EOF
1200 }
1201
1202 test_objcflags(){
1203     log test_objcflags "$@"
1204     set -- $($objcflags_filter "$@")
1205     test_objcc "$@" <<EOF
1206 int x;
1207 EOF
1208 }
1209
1210 check_objcflags(){
1211     log check_objcflags "$@"
1212     test_objcflags "$@" && add_objcflags "$@"
1213 }
1214
1215 test_ldflags(){
1216     log test_ldflags "$@"
1217     set -- $($ldflags_filter "$@")
1218     test_ld "cc" "$@" <<EOF
1219 int main(void){ return 0; }
1220 EOF
1221 }
1222
1223 check_ldflags(){
1224     log check_ldflags "$@"
1225     test_ldflags "$@" && add_ldflags "$@"
1226 }
1227
1228 test_stripflags(){
1229     log test_stripflags "$@"
1230     # call test_cc to get a fresh TMPO
1231     test_cc <<EOF
1232 int main(void) { return 0; }
1233 EOF
1234     test_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1235 }
1236
1237 check_stripflags(){
1238     log check_stripflags "$@"
1239     test_stripflags "$@" && add_stripflags "$@"
1240 }
1241
1242 check_headers(){
1243     log check_headers "$@"
1244     headers=$1
1245     shift
1246     disable_sanitized $headers
1247     {
1248         for hdr in $headers; do
1249             print_include $hdr
1250         done
1251         echo "int x;"
1252     } | test_cpp "$@" && enable_sanitized $headers
1253 }
1254
1255 check_header_objcc(){
1256     log check_header_objcc "$@"
1257     rm -f -- "$TMPO"
1258     header=$1
1259     shift
1260     disable_sanitized $header
1261     {
1262        echo "#include <$header>"
1263        echo "int main(void) { return 0; }"
1264     } | test_objcc && test_stat "$TMPO" && enable_sanitized $header
1265 }
1266
1267 check_apple_framework(){
1268     log check_apple_framework "$@"
1269     framework="$1"
1270     name="$(tolower $framework)"
1271     header="${framework}/${framework}.h"
1272     disable $name
1273     check_header_objcc $header &&
1274         enable $name && eval ${name}_extralibs='"-framework $framework"'
1275 }
1276
1277 check_func(){
1278     log check_func "$@"
1279     func=$1
1280     shift
1281     disable $func
1282     test_ld "cc" "$@" <<EOF && enable $func
1283 extern int $func();
1284 int main(void){ $func(); }
1285 EOF
1286 }
1287
1288 check_complexfunc(){
1289     log check_complexfunc "$@"
1290     func=$1
1291     narg=$2
1292     shift 2
1293     test $narg = 2 && args="f, g" || args="f * I"
1294     disable $func
1295     test_ld "cc" "$@" <<EOF && enable $func
1296 #include <complex.h>
1297 #include <math.h>
1298 float foo(complex float f, complex float g) { return $func($args); }
1299 int main(void){ return (int) foo; }
1300 EOF
1301 }
1302
1303 check_mathfunc(){
1304     log check_mathfunc "$@"
1305     func=$1
1306     narg=$2
1307     shift 2
1308     test $narg = 2 && args="f, g" || args="f"
1309     disable $func
1310     test_ld "cc" "$@" <<EOF && enable $func
1311 #include <math.h>
1312 float foo(float f, float g) { return $func($args); }
1313 int main(void){ return (int) foo; }
1314 EOF
1315 }
1316
1317 check_func_headers(){
1318     log check_func_headers "$@"
1319     headers=$1
1320     funcs=$2
1321     shift 2
1322     {
1323         for hdr in $headers; do
1324             print_include $hdr
1325         done
1326         echo "#include <stdint.h>"
1327         for func in $funcs; do
1328             echo "long check_$func(void) { return (long) $func; }"
1329         done
1330         echo "int main(void) { int ret = 0;"
1331         # LTO could optimize out the test functions without this
1332         for func in $funcs; do
1333             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1334         done
1335         echo "return ret; }"
1336     } | test_ld "cc" "$@" && enable $funcs && enable_sanitized $headers
1337 }
1338
1339 check_class_headers_cpp(){
1340     log check_class_headers_cpp "$@"
1341     headers=$1
1342     classes=$2
1343     shift 2
1344     {
1345         for hdr in $headers; do
1346             echo "#include <$hdr>"
1347         done
1348         echo "int main(void) { "
1349         i=1
1350         for class in $classes; do
1351             echo "$class obj$i;"
1352             i=$(expr $i + 1)
1353         done
1354         echo "return 0; }"
1355     } | test_ld "cxx" "$@" && enable $funcs && enable_sanitized $headers
1356 }
1357
1358 test_cpp_condition(){
1359     log test_cpp_condition "$@"
1360     header=$1
1361     condition=$2
1362     shift 2
1363     test_cpp "$@" <<EOF
1364 #include <$header>
1365 #if !($condition)
1366 #error "unsatisfied condition: $condition"
1367 #endif
1368 EOF
1369 }
1370
1371 check_cpp_condition(){
1372     log check_cpp_condition "$@"
1373     name=$1
1374     shift 1
1375     disable $name
1376     test_cpp_condition "$@" && enable $name
1377 }
1378
1379 test_cflags_cc(){
1380     log test_cflags_cc "$@"
1381     flags=$1
1382     header=$2
1383     condition=$3
1384     shift 3
1385     set -- $($cflags_filter "$flags")
1386     test_cc "$@" <<EOF
1387 #include <$header>
1388 #if !($condition)
1389 #error "unsatisfied condition: $condition"
1390 #endif
1391 EOF
1392 }
1393
1394 check_lib(){
1395     log check_lib "$@"
1396     name="$1"
1397     headers="$2"
1398     funcs="$3"
1399     shift 3
1400     disable $name
1401     check_func_headers "$headers" "$funcs" "$@" &&
1402         enable $name && eval ${name}_extralibs="\$@"
1403 }
1404
1405 check_lib_cpp(){
1406     log check_lib_cpp "$@"
1407     name="$1"
1408     headers="$2"
1409     classes="$3"
1410     shift 3
1411     disable $name
1412     check_class_headers_cpp "$headers" "$classes" "$@" &&
1413         enable $name && eval ${name}_extralibs="\$@"
1414 }
1415
1416 test_pkg_config(){
1417     log test_pkg_config "$@"
1418     name="$1"
1419     pkg_version="$2"
1420     pkg="${2%% *}"
1421     headers="$3"
1422     funcs="$4"
1423     shift 4
1424     disable $name
1425     test_cmd $pkg_config --exists --print-errors $pkg_version || return
1426     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1427     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1428     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1429         enable $name &&
1430         set_sanitized "${name}_cflags"    $pkg_cflags &&
1431         set_sanitized "${name}_extralibs" $pkg_libs
1432 }
1433
1434 check_pkg_config(){
1435     log check_pkg_config "$@"
1436     name="$1"
1437     test_pkg_config "$@" &&
1438         eval add_cflags \$${name}_cflags
1439 }
1440
1441 test_exec(){
1442     test_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1443 }
1444
1445 check_exec_crash(){
1446     log check_exec_crash "$@"
1447     code=$(cat)
1448
1449     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1450     # are safe but may not be available everywhere.  Thus we use
1451     # raise(SIGTERM) instead.  The check is run in a subshell so we
1452     # can redirect the "Terminated" message from the shell.  SIGBUS
1453     # is not defined by standard C so it is used conditionally.
1454
1455     (test_exec "$@") >> $logfile 2>&1 <<EOF
1456 #include <signal.h>
1457 static void sighandler(int sig){
1458     raise(SIGTERM);
1459 }
1460 int foo(void){
1461     $code
1462 }
1463 int (*func_ptr)(void) = foo;
1464 int main(void){
1465     signal(SIGILL, sighandler);
1466     signal(SIGFPE, sighandler);
1467     signal(SIGSEGV, sighandler);
1468 #ifdef SIGBUS
1469     signal(SIGBUS, sighandler);
1470 #endif
1471     return func_ptr();
1472 }
1473 EOF
1474 }
1475
1476 check_type(){
1477     log check_type "$@"
1478     headers=$1
1479     type=$2
1480     shift 2
1481     disable_sanitized "$type"
1482     test_code cc "$headers" "$type v" "$@" && enable_sanitized "$type"
1483 }
1484
1485 check_struct(){
1486     log check_struct "$@"
1487     headers=$1
1488     struct=$2
1489     member=$3
1490     shift 3
1491     disable_sanitized "${struct}_${member}"
1492     test_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1493         enable_sanitized "${struct}_${member}"
1494 }
1495
1496 check_builtin(){
1497     log check_builtin "$@"
1498     name=$1
1499     headers=$2
1500     builtin=$3
1501     shift 3
1502     disable "$name"
1503     test_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1504 }
1505
1506 check_compile_assert(){
1507     log check_compile_assert "$@"
1508     name=$1
1509     headers=$2
1510     condition=$3
1511     shift 3
1512     disable "$name"
1513     test_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1514 }
1515
1516 check_cc(){
1517     log check_cc "$@"
1518     name=$1
1519     shift
1520     disable "$name"
1521     test_code cc "$@" && enable "$name"
1522 }
1523
1524 require(){
1525     log require "$@"
1526     name_version="$1"
1527     name="${1%% *}"
1528     shift
1529     check_lib $name "$@" || die "ERROR: $name_version not found"
1530 }
1531
1532 require_cc(){
1533     log require_cc "$@"
1534     name="$1"
1535     check_cc "$@" || die "ERROR: $name failed"
1536 }
1537
1538 require_cpp(){
1539     name="$1"
1540     headers="$2"
1541     classes="$3"
1542     shift 3
1543     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1544 }
1545
1546 require_headers(){
1547     log require_headers "$@"
1548     headers="$1"
1549     check_headers "$@" || die "ERROR: $headers not found"
1550 }
1551
1552 require_cpp_condition(){
1553     log require_cpp_condition "$@"
1554     condition="$3"
1555     check_cpp_condition "$@" || die "ERROR: $condition not satisfied"
1556 }
1557
1558 require_pkg_config(){
1559     log require_pkg_config "$@"
1560     pkg_version="$2"
1561     check_pkg_config "$@" || die "ERROR: $pkg_version not found using pkg-config$pkg_config_fail_message"
1562 }
1563
1564 test_host_cc(){
1565     log test_host_cc "$@"
1566     cat > $TMPC
1567     log_file $TMPC
1568     test_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1569 }
1570
1571 test_host_cpp(){
1572     log test_host_cpp "$@"
1573     cat > $TMPC
1574     log_file $TMPC
1575     test_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1576 }
1577
1578 check_host_cppflags(){
1579     log check_host_cppflags "$@"
1580     test_host_cpp "$@" <<EOF && append host_cppflags "$@"
1581 #include <stdlib.h>
1582 EOF
1583 }
1584
1585 check_host_cflags(){
1586     log check_host_cflags "$@"
1587     set -- $($host_cflags_filter "$@")
1588     test_host_cc "$@" <<EOF && append host_cflags "$@"
1589 int x;
1590 EOF
1591 }
1592
1593 test_host_cpp_condition(){
1594     log test_host_cpp_condition "$@"
1595     header=$1
1596     condition=$2
1597     shift 2
1598     test_host_cpp "$@" <<EOF
1599 #include <$header>
1600 #if !($condition)
1601 #error "unsatisfied condition: $condition"
1602 #endif
1603 EOF
1604 }
1605
1606 check_host_cpp_condition(){
1607     log check_host_cpp_condition "$@"
1608     name=$1
1609     shift 1
1610     disable $name
1611     test_host_cpp_condition "$@" && enable $name
1612 }
1613
1614 cp_if_changed(){
1615     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1616     mkdir -p "$(dirname $2)"
1617     cp -f "$1" "$2"
1618 }
1619
1620 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1621 # system-dependent things.
1622
1623 AVCODEC_COMPONENTS="
1624     bsfs
1625     decoders
1626     encoders
1627     hwaccels
1628     parsers
1629 "
1630
1631 AVDEVICE_COMPONENTS="
1632     indevs
1633     outdevs
1634 "
1635
1636 AVFILTER_COMPONENTS="
1637     filters
1638 "
1639
1640 AVFORMAT_COMPONENTS="
1641     demuxers
1642     muxers
1643     protocols
1644 "
1645
1646 COMPONENT_LIST="
1647     $AVCODEC_COMPONENTS
1648     $AVDEVICE_COMPONENTS
1649     $AVFILTER_COMPONENTS
1650     $AVFORMAT_COMPONENTS
1651 "
1652
1653 EXAMPLE_LIST="
1654     avio_dir_cmd_example
1655     avio_reading_example
1656     decode_audio_example
1657     decode_video_example
1658     demuxing_decoding_example
1659     encode_audio_example
1660     encode_video_example
1661     extract_mvs_example
1662     filter_audio_example
1663     filtering_audio_example
1664     filtering_video_example
1665     http_multiclient_example
1666     hw_decode_example
1667     metadata_example
1668     muxing_example
1669     qsvdec_example
1670     remuxing_example
1671     resampling_audio_example
1672     scaling_video_example
1673     transcode_aac_example
1674     transcoding_example
1675     vaapi_encode_example
1676     vaapi_transcode_example
1677 "
1678
1679 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1680     alsa
1681     appkit
1682     avfoundation
1683     bzlib
1684     coreimage
1685     iconv
1686     libxcb
1687     libxcb_shm
1688     libxcb_shape
1689     libxcb_xfixes
1690     lzma
1691     schannel
1692     sdl2
1693     securetransport
1694     sndio
1695     xlib
1696     zlib
1697 "
1698
1699 EXTERNAL_LIBRARY_GPL_LIST="
1700     avisynth
1701     frei0r
1702     libcdio
1703     libdavs2
1704     librubberband
1705     libvidstab
1706     libx264
1707     libx265
1708     libxavs
1709     libxavs2
1710     libxvid
1711 "
1712
1713 EXTERNAL_LIBRARY_NONFREE_LIST="
1714     decklink
1715     libfdk_aac
1716     openssl
1717     libtls
1718 "
1719
1720 EXTERNAL_LIBRARY_VERSION3_LIST="
1721     gmp
1722     libaribb24
1723     liblensfun
1724     libopencore_amrnb
1725     libopencore_amrwb
1726     libvmaf
1727     libvo_amrwbenc
1728     mbedtls
1729     rkmpp
1730 "
1731
1732 EXTERNAL_LIBRARY_GPLV3_LIST="
1733     libsmbclient
1734 "
1735
1736 EXTERNAL_LIBRARY_LIST="
1737     $EXTERNAL_LIBRARY_GPL_LIST
1738     $EXTERNAL_LIBRARY_NONFREE_LIST
1739     $EXTERNAL_LIBRARY_VERSION3_LIST
1740     $EXTERNAL_LIBRARY_GPLV3_LIST
1741     chromaprint
1742     gcrypt
1743     gnutls
1744     jni
1745     ladspa
1746     libaom
1747     libass
1748     libbluray
1749     libbs2b
1750     libcaca
1751     libcelt
1752     libcodec2
1753     libdav1d
1754     libdc1394
1755     libdrm
1756     libflite
1757     libfontconfig
1758     libfreetype
1759     libfribidi
1760     libgme
1761     libgsm
1762     libiec61883
1763     libilbc
1764     libjack
1765     libklvanc
1766     libkvazaar
1767     libmodplug
1768     libmp3lame
1769     libmysofa
1770     libopencv
1771     libopenh264
1772     libopenjpeg
1773     libopenmpt
1774     libopus
1775     libpulse
1776     librsvg
1777     librtmp
1778     libshine
1779     libsmbclient
1780     libsnappy
1781     libsoxr
1782     libspeex
1783     libsrt
1784     libssh
1785     libtensorflow
1786     libtesseract
1787     libtheora
1788     libtwolame
1789     libv4l2
1790     libvorbis
1791     libvpx
1792     libwavpack
1793     libwebp
1794     libxml2
1795     libzimg
1796     libzmq
1797     libzvbi
1798     lv2
1799     mediacodec
1800     openal
1801     opengl
1802     vapoursynth
1803 "
1804
1805 HWACCEL_AUTODETECT_LIBRARY_LIST="
1806     amf
1807     audiotoolbox
1808     crystalhd
1809     cuda
1810     cuvid
1811     d3d11va
1812     dxva2
1813     ffnvcodec
1814     nvdec
1815     nvenc
1816     vaapi
1817     vdpau
1818     videotoolbox
1819     v4l2_m2m
1820     xvmc
1821 "
1822
1823 # catchall list of things that require external libs to link
1824 EXTRALIBS_LIST="
1825     cpu_init
1826     cws2fws
1827 "
1828
1829 HWACCEL_LIBRARY_NONFREE_LIST="
1830     cuda_nvcc
1831     cuda_sdk
1832     libnpp
1833 "
1834
1835 HWACCEL_LIBRARY_LIST="
1836     $HWACCEL_LIBRARY_NONFREE_LIST
1837     libmfx
1838     mmal
1839     omx
1840     opencl
1841 "
1842
1843 DOCUMENT_LIST="
1844     doc
1845     htmlpages
1846     manpages
1847     podpages
1848     txtpages
1849 "
1850
1851 FEATURE_LIST="
1852     ftrapv
1853     gray
1854     hardcoded_tables
1855     omx_rpi
1856     runtime_cpudetect
1857     safe_bitstream_reader
1858     shared
1859     small
1860     static
1861     swscale_alpha
1862 "
1863
1864 # this list should be kept in linking order
1865 LIBRARY_LIST="
1866     avdevice
1867     avfilter
1868     swscale
1869     postproc
1870     avformat
1871     avcodec
1872     swresample
1873     avresample
1874     avutil
1875 "
1876
1877 LICENSE_LIST="
1878     gpl
1879     nonfree
1880     version3
1881 "
1882
1883 PROGRAM_LIST="
1884     ffplay
1885     ffprobe
1886     ffmpeg
1887 "
1888
1889 SUBSYSTEM_LIST="
1890     dct
1891     dwt
1892     error_resilience
1893     faan
1894     fast_unaligned
1895     fft
1896     lsp
1897     lzo
1898     mdct
1899     pixelutils
1900     network
1901     rdft
1902 "
1903
1904 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1905 CONFIG_LIST="
1906     $DOCUMENT_LIST
1907     $EXAMPLE_LIST
1908     $EXTERNAL_LIBRARY_LIST
1909     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1910     $HWACCEL_LIBRARY_LIST
1911     $HWACCEL_AUTODETECT_LIBRARY_LIST
1912     $FEATURE_LIST
1913     $LICENSE_LIST
1914     $LIBRARY_LIST
1915     $PROGRAM_LIST
1916     $SUBSYSTEM_LIST
1917     autodetect
1918     fontconfig
1919     linux_perf
1920     memory_poisoning
1921     neon_clobber_test
1922     ossfuzz
1923     pic
1924     thumb
1925     valgrind_backtrace
1926     xmm_clobber_test
1927     $COMPONENT_LIST
1928 "
1929
1930 THREADS_LIST="
1931     pthreads
1932     os2threads
1933     w32threads
1934 "
1935
1936 ATOMICS_LIST="
1937     atomics_gcc
1938     atomics_suncc
1939     atomics_win32
1940 "
1941
1942 AUTODETECT_LIBS="
1943     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1944     $HWACCEL_AUTODETECT_LIBRARY_LIST
1945     $THREADS_LIST
1946 "
1947
1948 ARCH_LIST="
1949     aarch64
1950     alpha
1951     arm
1952     avr32
1953     avr32_ap
1954     avr32_uc
1955     bfin
1956     ia64
1957     m68k
1958     mips
1959     mips64
1960     parisc
1961     ppc
1962     ppc64
1963     s390
1964     sh4
1965     sparc
1966     sparc64
1967     tilegx
1968     tilepro
1969     tomi
1970     x86
1971     x86_32
1972     x86_64
1973 "
1974
1975 ARCH_EXT_LIST_ARM="
1976     armv5te
1977     armv6
1978     armv6t2
1979     armv8
1980     neon
1981     vfp
1982     vfpv3
1983     setend
1984 "
1985
1986 ARCH_EXT_LIST_MIPS="
1987     mipsfpu
1988     mips32r2
1989     mips32r5
1990     mips64r2
1991     mips32r6
1992     mips64r6
1993     mipsdsp
1994     mipsdspr2
1995     msa
1996 "
1997
1998 ARCH_EXT_LIST_LOONGSON="
1999     loongson2
2000     loongson3
2001     mmi
2002 "
2003
2004 ARCH_EXT_LIST_X86_SIMD="
2005     aesni
2006     amd3dnow
2007     amd3dnowext
2008     avx
2009     avx2
2010     avx512
2011     fma3
2012     fma4
2013     mmx
2014     mmxext
2015     sse
2016     sse2
2017     sse3
2018     sse4
2019     sse42
2020     ssse3
2021     xop
2022 "
2023
2024 ARCH_EXT_LIST_PPC="
2025     altivec
2026     dcbzl
2027     ldbrx
2028     power8
2029     ppc4xx
2030     vsx
2031 "
2032
2033 ARCH_EXT_LIST_X86="
2034     $ARCH_EXT_LIST_X86_SIMD
2035     cpunop
2036     i686
2037 "
2038
2039 ARCH_EXT_LIST="
2040     $ARCH_EXT_LIST_ARM
2041     $ARCH_EXT_LIST_PPC
2042     $ARCH_EXT_LIST_X86
2043     $ARCH_EXT_LIST_MIPS
2044     $ARCH_EXT_LIST_LOONGSON
2045 "
2046
2047 ARCH_FEATURES="
2048     aligned_stack
2049     fast_64bit
2050     fast_clz
2051     fast_cmov
2052     local_aligned
2053     simd_align_16
2054     simd_align_32
2055     simd_align_64
2056 "
2057
2058 BUILTIN_LIST="
2059     atomic_cas_ptr
2060     machine_rw_barrier
2061     MemoryBarrier
2062     mm_empty
2063     rdtsc
2064     sem_timedwait
2065     sync_val_compare_and_swap
2066 "
2067 HAVE_LIST_CMDLINE="
2068     inline_asm
2069     symver
2070     x86asm
2071 "
2072
2073 HAVE_LIST_PUB="
2074     bigendian
2075     fast_unaligned
2076 "
2077
2078 HEADERS_LIST="
2079     arpa_inet_h
2080     asm_types_h
2081     cdio_paranoia_h
2082     cdio_paranoia_paranoia_h
2083     cuda_h
2084     dispatch_dispatch_h
2085     dev_bktr_ioctl_bt848_h
2086     dev_bktr_ioctl_meteor_h
2087     dev_ic_bt8xx_h
2088     dev_video_bktr_ioctl_bt848_h
2089     dev_video_meteor_ioctl_meteor_h
2090     direct_h
2091     dirent_h
2092     dxgidebug_h
2093     dxva_h
2094     ES2_gl_h
2095     gsm_h
2096     io_h
2097     linux_perf_event_h
2098     machine_ioctl_bt848_h
2099     machine_ioctl_meteor_h
2100     malloc_h
2101     opencv2_core_core_c_h
2102     OpenGL_gl3_h
2103     poll_h
2104     sys_param_h
2105     sys_resource_h
2106     sys_select_h
2107     sys_soundcard_h
2108     sys_time_h
2109     sys_un_h
2110     sys_videoio_h
2111     termios_h
2112     udplite_h
2113     unistd_h
2114     valgrind_valgrind_h
2115     windows_h
2116     winsock2_h
2117 "
2118
2119 INTRINSICS_LIST="
2120     intrinsics_neon
2121 "
2122
2123 COMPLEX_FUNCS="
2124     cabs
2125     cexp
2126 "
2127
2128 MATH_FUNCS="
2129     atanf
2130     atan2f
2131     cbrt
2132     cbrtf
2133     copysign
2134     cosf
2135     erf
2136     exp2
2137     exp2f
2138     expf
2139     hypot
2140     isfinite
2141     isinf
2142     isnan
2143     ldexpf
2144     llrint
2145     llrintf
2146     log2
2147     log2f
2148     log10f
2149     lrint
2150     lrintf
2151     powf
2152     rint
2153     round
2154     roundf
2155     sinf
2156     trunc
2157     truncf
2158 "
2159
2160 SYSTEM_FEATURES="
2161     dos_paths
2162     libc_msvcrt
2163     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2164     section_data_rel_ro
2165     threads
2166     uwp
2167     winrt
2168 "
2169
2170 SYSTEM_FUNCS="
2171     access
2172     aligned_malloc
2173     arc4random
2174     clock_gettime
2175     closesocket
2176     CommandLineToArgvW
2177     fcntl
2178     getaddrinfo
2179     gethrtime
2180     getopt
2181     GetProcessAffinityMask
2182     GetProcessMemoryInfo
2183     GetProcessTimes
2184     getrusage
2185     GetSystemTimeAsFileTime
2186     gettimeofday
2187     glob
2188     glXGetProcAddress
2189     gmtime_r
2190     inet_aton
2191     isatty
2192     kbhit
2193     localtime_r
2194     lstat
2195     lzo1x_999_compress
2196     mach_absolute_time
2197     MapViewOfFile
2198     memalign
2199     mkstemp
2200     mmap
2201     mprotect
2202     nanosleep
2203     PeekNamedPipe
2204     posix_memalign
2205     pthread_cancel
2206     sched_getaffinity
2207     SecItemImport
2208     SetConsoleTextAttribute
2209     SetConsoleCtrlHandler
2210     setmode
2211     setrlimit
2212     Sleep
2213     strerror_r
2214     sysconf
2215     sysctl
2216     usleep
2217     UTGetOSTypeFromString
2218     VirtualAlloc
2219     wglGetProcAddress
2220 "
2221
2222 SYSTEM_LIBRARIES="
2223     bcrypt
2224     vaapi_drm
2225     vaapi_x11
2226     vdpau_x11
2227 "
2228
2229 TOOLCHAIN_FEATURES="
2230     as_arch_directive
2231     as_dn_directive
2232     as_fpu_directive
2233     as_func
2234     as_object_arch
2235     asm_mod_q
2236     blocks_extension
2237     ebp_available
2238     ebx_available
2239     gnu_as
2240     gnu_windres
2241     ibm_asm
2242     inline_asm_direct_symbol_refs
2243     inline_asm_labels
2244     inline_asm_nonlocal_labels
2245     pragma_deprecated
2246     rsync_contimeout
2247     symver_asm_label
2248     symver_gnu_asm
2249     vfp_args
2250     xform_asm
2251     xmm_clobbers
2252 "
2253
2254 TYPES_LIST="
2255     kCMVideoCodecType_HEVC
2256     socklen_t
2257     struct_addrinfo
2258     struct_group_source_req
2259     struct_ip_mreq_source
2260     struct_ipv6_mreq
2261     struct_msghdr_msg_flags
2262     struct_pollfd
2263     struct_rusage_ru_maxrss
2264     struct_sctp_event_subscribe
2265     struct_sockaddr_in6
2266     struct_sockaddr_sa_len
2267     struct_sockaddr_storage
2268     struct_stat_st_mtim_tv_nsec
2269     struct_v4l2_frmivalenum_discrete
2270 "
2271
2272 HAVE_LIST="
2273     $ARCH_EXT_LIST
2274     $(add_suffix _external $ARCH_EXT_LIST)
2275     $(add_suffix _inline   $ARCH_EXT_LIST)
2276     $ARCH_FEATURES
2277     $BUILTIN_LIST
2278     $COMPLEX_FUNCS
2279     $HAVE_LIST_CMDLINE
2280     $HAVE_LIST_PUB
2281     $HEADERS_LIST
2282     $INTRINSICS_LIST
2283     $MATH_FUNCS
2284     $SYSTEM_FEATURES
2285     $SYSTEM_FUNCS
2286     $SYSTEM_LIBRARIES
2287     $THREADS_LIST
2288     $TOOLCHAIN_FEATURES
2289     $TYPES_LIST
2290     makeinfo
2291     makeinfo_html
2292     opencl_d3d11
2293     opencl_drm_arm
2294     opencl_drm_beignet
2295     opencl_dxva2
2296     opencl_vaapi_beignet
2297     opencl_vaapi_intel_media
2298     perl
2299     pod2man
2300     texi2html
2301 "
2302
2303 # options emitted with CONFIG_ prefix but not available on the command line
2304 CONFIG_EXTRA="
2305     aandcttables
2306     ac3dsp
2307     adts_header
2308     audio_frame_queue
2309     audiodsp
2310     blockdsp
2311     bswapdsp
2312     cabac
2313     cbs
2314     cbs_av1
2315     cbs_h264
2316     cbs_h265
2317     cbs_jpeg
2318     cbs_mpeg2
2319     cbs_vp9
2320     dirac_parse
2321     dnn
2322     dvprofile
2323     exif
2324     faandct
2325     faanidct
2326     fdctdsp
2327     flacdsp
2328     fmtconvert
2329     frame_thread_encoder
2330     g722dsp
2331     golomb
2332     gplv3
2333     h263dsp
2334     h264chroma
2335     h264dsp
2336     h264parse
2337     h264pred
2338     h264qpel
2339     hevcparse
2340     hpeldsp
2341     huffman
2342     huffyuvdsp
2343     huffyuvencdsp
2344     idctdsp
2345     iirfilter
2346     mdct15
2347     intrax8
2348     iso_media
2349     ividsp
2350     jpegtables
2351     lgplv3
2352     libx262
2353     llauddsp
2354     llviddsp
2355     llvidencdsp
2356     lpc
2357     lzf
2358     me_cmp
2359     mpeg_er
2360     mpegaudio
2361     mpegaudiodsp
2362     mpegaudioheader
2363     mpegvideo
2364     mpegvideoenc
2365     mss34dsp
2366     pixblockdsp
2367     qpeldsp
2368     qsv
2369     qsvdec
2370     qsvenc
2371     qsvvpp
2372     rangecoder
2373     riffdec
2374     riffenc
2375     rtpdec
2376     rtpenc_chain
2377     rv34dsp
2378     scene_sad
2379     sinewin
2380     snappy
2381     srtp
2382     startcode
2383     texturedsp
2384     texturedspenc
2385     tpeldsp
2386     vaapi_1
2387     vaapi_encode
2388     vc1dsp
2389     videodsp
2390     vp3dsp
2391     vp56dsp
2392     vp8dsp
2393     wma_freqs
2394     wmv2dsp
2395 "
2396
2397 CMDLINE_SELECT="
2398     $ARCH_EXT_LIST
2399     $CONFIG_LIST
2400     $HAVE_LIST_CMDLINE
2401     $THREADS_LIST
2402     asm
2403     cross_compile
2404     debug
2405     extra_warnings
2406     logging
2407     lto
2408     optimizations
2409     rpath
2410     stripping
2411 "
2412
2413 PATHS_LIST="
2414     bindir
2415     datadir
2416     docdir
2417     incdir
2418     libdir
2419     mandir
2420     pkgconfigdir
2421     prefix
2422     shlibdir
2423     install_name_dir
2424 "
2425
2426 CMDLINE_SET="
2427     $PATHS_LIST
2428     ar
2429     arch
2430     as
2431     assert_level
2432     build_suffix
2433     cc
2434     objcc
2435     cpu
2436     cross_prefix
2437     custom_allocator
2438     cxx
2439     dep_cc
2440     doxygen
2441     env
2442     extra_version
2443     gas
2444     host_cc
2445     host_cflags
2446     host_extralibs
2447     host_ld
2448     host_ldflags
2449     host_os
2450     ignore_tests
2451     install
2452     ld
2453     ln_s
2454     logfile
2455     malloc_prefix
2456     nm
2457     optflags
2458     nvcc
2459     nvccflags
2460     pkg_config
2461     pkg_config_flags
2462     progs_suffix
2463     random_seed
2464     ranlib
2465     samples
2466     strip
2467     sws_max_filter_size
2468     sysinclude
2469     sysroot
2470     target_exec
2471     target_os
2472     target_path
2473     target_samples
2474     tempprefix
2475     toolchain
2476     valgrind
2477     windres
2478     x86asmexe
2479 "
2480
2481 CMDLINE_APPEND="
2482     extra_cflags
2483     extra_cxxflags
2484     extra_objcflags
2485     host_cppflags
2486 "
2487
2488 # code dependency declarations
2489
2490 # architecture extensions
2491
2492 armv5te_deps="arm"
2493 armv6_deps="arm"
2494 armv6t2_deps="arm"
2495 armv8_deps="aarch64"
2496 neon_deps_any="aarch64 arm"
2497 intrinsics_neon_deps="neon"
2498 vfp_deps_any="aarch64 arm"
2499 vfpv3_deps="vfp"
2500 setend_deps="arm"
2501
2502 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2503
2504 altivec_deps="ppc"
2505 dcbzl_deps="ppc"
2506 ldbrx_deps="ppc"
2507 ppc4xx_deps="ppc"
2508 vsx_deps="altivec"
2509 power8_deps="vsx"
2510
2511 loongson2_deps="mips"
2512 loongson3_deps="mips"
2513 mips32r2_deps="mips"
2514 mips32r5_deps="mips"
2515 mips32r6_deps="mips"
2516 mips64r2_deps="mips"
2517 mips64r6_deps="mips"
2518 mipsfpu_deps="mips"
2519 mipsdsp_deps="mips"
2520 mipsdspr2_deps="mips"
2521 mmi_deps="mips"
2522 msa_deps="mipsfpu"
2523
2524 cpunop_deps="i686"
2525 x86_64_select="i686"
2526 x86_64_suggest="fast_cmov"
2527
2528 amd3dnow_deps="mmx"
2529 amd3dnowext_deps="amd3dnow"
2530 i686_deps="x86"
2531 mmx_deps="x86"
2532 mmxext_deps="mmx"
2533 sse_deps="mmxext"
2534 sse2_deps="sse"
2535 sse3_deps="sse2"
2536 ssse3_deps="sse3"
2537 sse4_deps="ssse3"
2538 sse42_deps="sse4"
2539 aesni_deps="sse42"
2540 avx_deps="sse42"
2541 xop_deps="avx"
2542 fma3_deps="avx"
2543 fma4_deps="avx"
2544 avx2_deps="avx"
2545 avx512_deps="avx2"
2546
2547 mmx_external_deps="x86asm"
2548 mmx_inline_deps="inline_asm x86"
2549 mmx_suggest="mmx_external mmx_inline"
2550
2551 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2552     eval dep=\$${ext}_deps
2553     eval ${ext}_external_deps='"${dep}_external"'
2554     eval ${ext}_inline_deps='"${dep}_inline"'
2555     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2556 done
2557
2558 aligned_stack_if_any="aarch64 ppc x86"
2559 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2560 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2561 fast_unaligned_if_any="aarch64 ppc x86"
2562 simd_align_16_if_any="altivec neon sse"
2563 simd_align_32_if_any="avx"
2564 simd_align_64_if_any="avx512"
2565
2566 # system capabilities
2567 linux_perf_deps="linux_perf_event_h"
2568 symver_if_any="symver_asm_label symver_gnu_asm"
2569 valgrind_backtrace_conflict="optimizations"
2570 valgrind_backtrace_deps="valgrind_valgrind_h"
2571
2572 # threading support
2573 atomics_gcc_if="sync_val_compare_and_swap"
2574 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2575 atomics_win32_if="MemoryBarrier"
2576 atomics_native_if_any="$ATOMICS_LIST"
2577 w32threads_deps="atomics_native"
2578 threads_if_any="$THREADS_LIST"
2579
2580 # subsystems
2581 cbs_av1_select="cbs"
2582 cbs_h264_select="cbs golomb"
2583 cbs_h265_select="cbs golomb"
2584 cbs_jpeg_select="cbs"
2585 cbs_mpeg2_select="cbs"
2586 cbs_vp9_select="cbs"
2587 dct_select="rdft"
2588 dirac_parse_select="golomb"
2589 dnn_suggest="libtensorflow"
2590 error_resilience_select="me_cmp"
2591 faandct_deps="faan"
2592 faandct_select="fdctdsp"
2593 faanidct_deps="faan"
2594 faanidct_select="idctdsp"
2595 h264dsp_select="startcode"
2596 hevcparse_select="golomb"
2597 frame_thread_encoder_deps="encoders threads"
2598 intrax8_select="blockdsp idctdsp"
2599 mdct_select="fft"
2600 mdct15_select="fft"
2601 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2602 mpeg_er_select="error_resilience"
2603 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2604 mpegaudiodsp_select="dct"
2605 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2606 mpegvideoenc_select="aandcttables me_cmp mpegvideo pixblockdsp qpeldsp"
2607 vc1dsp_select="h264chroma qpeldsp startcode"
2608 rdft_select="fft"
2609
2610 # decoders / encoders
2611 aac_decoder_select="adts_header mdct15 mdct sinewin"
2612 aac_fixed_decoder_select="adts_header mdct sinewin"
2613 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2614 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2615 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2616 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2617 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2618 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2619 adpcm_g722_decoder_select="g722dsp"
2620 adpcm_g722_encoder_select="g722dsp"
2621 aic_decoder_select="golomb idctdsp"
2622 alac_encoder_select="lpc"
2623 als_decoder_select="bswapdsp"
2624 amrnb_decoder_select="lsp"
2625 amrwb_decoder_select="lsp"
2626 amv_decoder_select="sp5x_decoder exif"
2627 amv_encoder_select="jpegtables mpegvideoenc"
2628 ape_decoder_select="bswapdsp llauddsp"
2629 apng_decoder_deps="zlib"
2630 apng_encoder_deps="zlib"
2631 apng_encoder_select="llvidencdsp"
2632 aptx_decoder_select="audio_frame_queue"
2633 aptx_encoder_select="audio_frame_queue"
2634 aptx_hd_decoder_select="audio_frame_queue"
2635 aptx_hd_encoder_select="audio_frame_queue"
2636 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2637 asv1_encoder_select="aandcttables bswapdsp fdctdsp pixblockdsp"
2638 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2639 asv2_encoder_select="aandcttables bswapdsp fdctdsp pixblockdsp"
2640 atrac1_decoder_select="mdct sinewin"
2641 atrac3_decoder_select="mdct"
2642 atrac3p_decoder_select="mdct sinewin"
2643 atrac9_decoder_select="mdct"
2644 avrn_decoder_select="exif jpegtables"
2645 bink_decoder_select="blockdsp hpeldsp"
2646 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2647 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2648 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2649 clearvideo_decoder_select="idctdsp"
2650 cllc_decoder_select="bswapdsp"
2651 comfortnoise_encoder_select="lpc"
2652 cook_decoder_select="audiodsp mdct sinewin"
2653 cscd_decoder_select="lzo"
2654 cscd_decoder_suggest="zlib"
2655 dca_decoder_select="mdct"
2656 dds_decoder_select="texturedsp"
2657 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2658 dnxhd_decoder_select="blockdsp idctdsp"
2659 dnxhd_encoder_select="blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2660 dolby_e_decoder_select="mdct"
2661 dvvideo_decoder_select="dvprofile idctdsp"
2662 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2663 dxa_decoder_deps="zlib"
2664 dxv_decoder_select="lzf texturedsp"
2665 eac3_decoder_select="ac3_decoder"
2666 eac3_encoder_select="ac3_encoder"
2667 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2668 eatgq_decoder_select="aandcttables"
2669 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2670 exr_decoder_deps="zlib"
2671 ffv1_decoder_select="rangecoder"
2672 ffv1_encoder_select="rangecoder"
2673 ffvhuff_decoder_select="huffyuv_decoder"
2674 ffvhuff_encoder_select="huffyuv_encoder"
2675 fic_decoder_select="golomb"
2676 flac_decoder_select="flacdsp"
2677 flac_encoder_select="bswapdsp flacdsp lpc"
2678 flashsv2_decoder_deps="zlib"
2679 flashsv2_encoder_deps="zlib"
2680 flashsv_decoder_deps="zlib"
2681 flashsv_encoder_deps="zlib"
2682 flv_decoder_select="h263_decoder"
2683 flv_encoder_select="h263_encoder"
2684 fourxm_decoder_select="blockdsp bswapdsp"
2685 fraps_decoder_select="bswapdsp huffman"
2686 g2m_decoder_deps="zlib"
2687 g2m_decoder_select="blockdsp idctdsp jpegtables"
2688 g729_decoder_select="audiodsp"
2689 h261_decoder_select="mpegvideo"
2690 h261_encoder_select="mpegvideoenc"
2691 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2692 h263_encoder_select="h263dsp mpegvideoenc"
2693 h263i_decoder_select="h263_decoder"
2694 h263p_decoder_select="h263_decoder"
2695 h263p_encoder_select="h263_encoder"
2696 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2697 h264_decoder_suggest="error_resilience"
2698 hap_decoder_select="snappy texturedsp"
2699 hap_encoder_deps="libsnappy"
2700 hap_encoder_select="texturedspenc"
2701 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2702 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2703 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2704 hymt_decoder_select="huffyuv_decoder"
2705 iac_decoder_select="imc_decoder"
2706 imc_decoder_select="bswapdsp fft mdct sinewin"
2707 indeo3_decoder_select="hpeldsp"
2708 indeo4_decoder_select="ividsp"
2709 indeo5_decoder_select="ividsp"
2710 interplay_video_decoder_select="hpeldsp"
2711 jpegls_decoder_select="mjpeg_decoder"
2712 jv_decoder_select="blockdsp"
2713 lagarith_decoder_select="llviddsp"
2714 ljpeg_encoder_select="idctdsp jpegtables mpegvideoenc"
2715 magicyuv_decoder_select="llviddsp"
2716 magicyuv_encoder_select="llvidencdsp"
2717 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2718 metasound_decoder_select="lsp mdct sinewin"
2719 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2720 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2721 mjpeg_encoder_select="jpegtables mpegvideoenc"
2722 mjpegb_decoder_select="mjpeg_decoder"
2723 mlp_decoder_select="mlp_parser"
2724 mlp_encoder_select="lpc audio_frame_queue"
2725 motionpixels_decoder_select="bswapdsp"
2726 mp1_decoder_select="mpegaudio"
2727 mp1float_decoder_select="mpegaudio"
2728 mp2_decoder_select="mpegaudio"
2729 mp2float_decoder_select="mpegaudio"
2730 mp3_decoder_select="mpegaudio"
2731 mp3adu_decoder_select="mpegaudio"
2732 mp3adufloat_decoder_select="mpegaudio"
2733 mp3float_decoder_select="mpegaudio"
2734 mp3on4_decoder_select="mpegaudio"
2735 mp3on4float_decoder_select="mpegaudio"
2736 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2737 mpc8_decoder_select="mpegaudiodsp"
2738 mpegvideo_decoder_select="mpegvideo"
2739 mpeg1video_decoder_select="mpegvideo"
2740 mpeg1video_encoder_select="mpegvideoenc h263dsp"
2741 mpeg2video_decoder_select="mpegvideo"
2742 mpeg2video_encoder_select="mpegvideoenc h263dsp"
2743 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2744 mpeg4_encoder_select="h263_encoder"
2745 msa1_decoder_select="mss34dsp"
2746 mscc_decoder_deps="zlib"
2747 msmpeg4v1_decoder_select="h263_decoder"
2748 msmpeg4v2_decoder_select="h263_decoder"
2749 msmpeg4v2_encoder_select="h263_encoder"
2750 msmpeg4v3_decoder_select="h263_decoder"
2751 msmpeg4v3_encoder_select="h263_encoder"
2752 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2753 mts2_decoder_select="mss34dsp"
2754 mwsc_decoder_deps="zlib"
2755 mxpeg_decoder_select="mjpeg_decoder"
2756 nellymoser_decoder_select="mdct sinewin"
2757 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2758 nuv_decoder_select="idctdsp lzo"
2759 on2avc_decoder_select="mdct"
2760 opus_decoder_deps="swresample"
2761 opus_decoder_select="mdct15"
2762 opus_encoder_select="audio_frame_queue mdct15"
2763 png_decoder_deps="zlib"
2764 png_encoder_deps="zlib"
2765 png_encoder_select="llvidencdsp"
2766 prores_decoder_select="blockdsp idctdsp"
2767 prores_encoder_select="fdctdsp"
2768 qcelp_decoder_select="lsp"
2769 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2770 ra_144_decoder_select="audiodsp"
2771 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2772 ralf_decoder_select="golomb"
2773 rasc_decoder_deps="zlib"
2774 rawvideo_decoder_select="bswapdsp"
2775 rscc_decoder_deps="zlib"
2776 rtjpeg_decoder_select="me_cmp"
2777 rv10_decoder_select="h263_decoder"
2778 rv10_encoder_select="h263_encoder"
2779 rv20_decoder_select="h263_decoder"
2780 rv20_encoder_select="h263_encoder"
2781 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2782 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2783 screenpresso_decoder_deps="zlib"
2784 shorten_decoder_select="bswapdsp"
2785 sipr_decoder_select="lsp"
2786 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2787 snow_encoder_select="dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2788 sonic_decoder_select="golomb rangecoder"
2789 sonic_encoder_select="golomb rangecoder"
2790 sonic_ls_encoder_select="golomb rangecoder"
2791 sp5x_decoder_select="mjpeg_decoder"
2792 speedhq_decoder_select="mpegvideo"
2793 srgc_decoder_deps="zlib"
2794 svq1_decoder_select="hpeldsp"
2795 svq1_encoder_select="hpeldsp me_cmp mpegvideoenc"
2796 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2797 svq3_decoder_suggest="zlib"
2798 tak_decoder_select="audiodsp"
2799 tdsc_decoder_deps="zlib"
2800 tdsc_decoder_select="mjpeg_decoder"
2801 theora_decoder_select="vp3_decoder"
2802 thp_decoder_select="mjpeg_decoder"
2803 tiff_decoder_suggest="zlib lzma"
2804 tiff_encoder_suggest="zlib"
2805 truehd_decoder_select="mlp_parser"
2806 truehd_encoder_select="lpc audio_frame_queue"
2807 truemotion2_decoder_select="bswapdsp"
2808 truespeech_decoder_select="bswapdsp"
2809 tscc_decoder_deps="zlib"
2810 twinvq_decoder_select="mdct lsp sinewin"
2811 txd_decoder_select="texturedsp"
2812 utvideo_decoder_select="bswapdsp llviddsp"
2813 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2814 vble_decoder_select="llviddsp"
2815 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2816 vc1image_decoder_select="vc1_decoder"
2817 vorbis_decoder_select="mdct"
2818 vorbis_encoder_select="audio_frame_queue mdct"
2819 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2820 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2821 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2822 vp6a_decoder_select="vp6_decoder"
2823 vp6f_decoder_select="vp6_decoder"
2824 vp7_decoder_select="h264pred videodsp vp8dsp"
2825 vp8_decoder_select="h264pred videodsp vp8dsp"
2826 vp9_decoder_select="videodsp vp9_parser vp9_superframe_split_bsf"
2827 wcmv_decoder_deps="zlib"
2828 webp_decoder_select="vp8_decoder exif"
2829 wmalossless_decoder_select="llauddsp"
2830 wmapro_decoder_select="mdct sinewin wma_freqs"
2831 wmav1_decoder_select="mdct sinewin wma_freqs"
2832 wmav1_encoder_select="mdct sinewin wma_freqs"
2833 wmav2_decoder_select="mdct sinewin wma_freqs"
2834 wmav2_encoder_select="mdct sinewin wma_freqs"
2835 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2836 wmv1_decoder_select="h263_decoder"
2837 wmv1_encoder_select="h263_encoder"
2838 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2839 wmv2_encoder_select="h263_encoder wmv2dsp"
2840 wmv3_decoder_select="vc1_decoder"
2841 wmv3image_decoder_select="wmv3_decoder"
2842 xma1_decoder_select="wmapro_decoder"
2843 xma2_decoder_select="wmapro_decoder"
2844 zerocodec_decoder_deps="zlib"
2845 zlib_decoder_deps="zlib"
2846 zlib_encoder_deps="zlib"
2847 zmbv_decoder_deps="zlib"
2848 zmbv_encoder_deps="zlib"
2849
2850 # hardware accelerators
2851 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2852 cuda_deps="ffnvcodec"
2853 cuvid_deps="ffnvcodec"
2854 d3d11va_deps="dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2855 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32 user32"
2856 ffnvcodec_deps_any="libdl LoadLibrary"
2857 nvdec_deps="ffnvcodec"
2858 vaapi_x11_deps="xlib"
2859 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2860 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2861 xvmc_deps="X11_extensions_XvMClib_h"
2862
2863 h263_vaapi_hwaccel_deps="vaapi"
2864 h263_vaapi_hwaccel_select="h263_decoder"
2865 h263_videotoolbox_hwaccel_deps="videotoolbox"
2866 h263_videotoolbox_hwaccel_select="h263_decoder"
2867 h264_d3d11va_hwaccel_deps="d3d11va"
2868 h264_d3d11va_hwaccel_select="h264_decoder"
2869 h264_d3d11va2_hwaccel_deps="d3d11va"
2870 h264_d3d11va2_hwaccel_select="h264_decoder"
2871 h264_dxva2_hwaccel_deps="dxva2"
2872 h264_dxva2_hwaccel_select="h264_decoder"
2873 h264_nvdec_hwaccel_deps="nvdec"
2874 h264_nvdec_hwaccel_select="h264_decoder"
2875 h264_vaapi_hwaccel_deps="vaapi"
2876 h264_vaapi_hwaccel_select="h264_decoder"
2877 h264_vdpau_hwaccel_deps="vdpau"
2878 h264_vdpau_hwaccel_select="h264_decoder"
2879 h264_videotoolbox_hwaccel_deps="videotoolbox"
2880 h264_videotoolbox_hwaccel_select="h264_decoder"
2881 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2882 hevc_d3d11va_hwaccel_select="hevc_decoder"
2883 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2884 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2885 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2886 hevc_dxva2_hwaccel_select="hevc_decoder"
2887 hevc_nvdec_hwaccel_deps="nvdec"
2888 hevc_nvdec_hwaccel_select="hevc_decoder"
2889 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2890 hevc_vaapi_hwaccel_select="hevc_decoder"
2891 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2892 hevc_vdpau_hwaccel_select="hevc_decoder"
2893 hevc_videotoolbox_hwaccel_deps="videotoolbox"
2894 hevc_videotoolbox_hwaccel_select="hevc_decoder"
2895 mjpeg_nvdec_hwaccel_deps="nvdec"
2896 mjpeg_nvdec_hwaccel_select="mjpeg_decoder"
2897 mjpeg_vaapi_hwaccel_deps="vaapi"
2898 mjpeg_vaapi_hwaccel_select="mjpeg_decoder"
2899 mpeg_xvmc_hwaccel_deps="xvmc"
2900 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2901 mpeg1_nvdec_hwaccel_deps="nvdec"
2902 mpeg1_nvdec_hwaccel_select="mpeg1video_decoder"
2903 mpeg1_vdpau_hwaccel_deps="vdpau"
2904 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2905 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2906 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2907 mpeg1_xvmc_hwaccel_deps="xvmc"
2908 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2909 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2910 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2911 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2912 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2913 mpeg2_dxva2_hwaccel_deps="dxva2"
2914 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2915 mpeg2_nvdec_hwaccel_deps="nvdec"
2916 mpeg2_nvdec_hwaccel_select="mpeg2video_decoder"
2917 mpeg2_vaapi_hwaccel_deps="vaapi"
2918 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2919 mpeg2_vdpau_hwaccel_deps="vdpau"
2920 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2921 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2922 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2923 mpeg2_xvmc_hwaccel_deps="xvmc"
2924 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2925 mpeg4_nvdec_hwaccel_deps="nvdec"
2926 mpeg4_nvdec_hwaccel_select="mpeg4_decoder"
2927 mpeg4_vaapi_hwaccel_deps="vaapi"
2928 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2929 mpeg4_vdpau_hwaccel_deps="vdpau"
2930 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2931 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2932 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2933 vc1_d3d11va_hwaccel_deps="d3d11va"
2934 vc1_d3d11va_hwaccel_select="vc1_decoder"
2935 vc1_d3d11va2_hwaccel_deps="d3d11va"
2936 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2937 vc1_dxva2_hwaccel_deps="dxva2"
2938 vc1_dxva2_hwaccel_select="vc1_decoder"
2939 vc1_nvdec_hwaccel_deps="nvdec"
2940 vc1_nvdec_hwaccel_select="vc1_decoder"
2941 vc1_vaapi_hwaccel_deps="vaapi"
2942 vc1_vaapi_hwaccel_select="vc1_decoder"
2943 vc1_vdpau_hwaccel_deps="vdpau"
2944 vc1_vdpau_hwaccel_select="vc1_decoder"
2945 vp8_nvdec_hwaccel_deps="nvdec"
2946 vp8_nvdec_hwaccel_select="vp8_decoder"
2947 vp8_vaapi_hwaccel_deps="vaapi"
2948 vp8_vaapi_hwaccel_select="vp8_decoder"
2949 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2950 vp9_d3d11va_hwaccel_select="vp9_decoder"
2951 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2952 vp9_d3d11va2_hwaccel_select="vp9_decoder"
2953 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2954 vp9_dxva2_hwaccel_select="vp9_decoder"
2955 vp9_nvdec_hwaccel_deps="nvdec"
2956 vp9_nvdec_hwaccel_select="vp9_decoder"
2957 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2958 vp9_vaapi_hwaccel_select="vp9_decoder"
2959 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2960 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2961 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2962 wmv3_nvdec_hwaccel_select="vc1_nvdec_hwaccel"
2963 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2964 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2965
2966 # hardware-accelerated codecs
2967 omx_deps="libdl pthreads"
2968 omx_rpi_select="omx"
2969 qsv_deps="libmfx"
2970 qsvdec_select="qsv"
2971 qsvenc_select="qsv"
2972 qsvvpp_select="qsv"
2973 vaapi_encode_deps="vaapi"
2974 v4l2_m2m_deps="linux_videodev2_h sem_timedwait"
2975
2976 hwupload_cuda_filter_deps="ffnvcodec"
2977 scale_npp_filter_deps="ffnvcodec libnpp"
2978 scale_cuda_filter_deps="ffnvcodec cuda_nvcc"
2979 thumbnail_cuda_filter_deps="ffnvcodec cuda_nvcc"
2980 transpose_npp_filter_deps="ffnvcodec libnpp"
2981
2982 amf_deps_any="libdl LoadLibrary"
2983 nvenc_deps="ffnvcodec"
2984 nvenc_deps_any="libdl LoadLibrary"
2985 nvenc_encoder_deps="nvenc"
2986
2987 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
2988 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
2989 h264_amf_encoder_deps="amf"
2990 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2991 h264_cuvid_decoder_deps="cuvid"
2992 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2993 h264_mediacodec_decoder_deps="mediacodec"
2994 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2995 h264_mmal_decoder_deps="mmal"
2996 h264_nvenc_encoder_deps="nvenc"
2997 h264_omx_encoder_deps="omx"
2998 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec"
2999 h264_qsv_encoder_select="qsvenc"
3000 h264_rkmpp_decoder_deps="rkmpp"
3001 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
3002 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
3003 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
3004 h264_v4l2m2m_decoder_select="h264_mp4toannexb_bsf"
3005 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
3006 hevc_amf_encoder_deps="amf"
3007 hevc_cuvid_decoder_deps="cuvid"
3008 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
3009 hevc_mediacodec_decoder_deps="mediacodec"
3010 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
3011 hevc_nvenc_encoder_deps="nvenc"
3012 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec"
3013 hevc_qsv_encoder_select="hevcparse qsvenc"
3014 hevc_rkmpp_decoder_deps="rkmpp"
3015 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
3016 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
3017 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
3018 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
3019 hevc_v4l2m2m_decoder_select="hevc_mp4toannexb_bsf"
3020 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
3021 mjpeg_cuvid_decoder_deps="cuvid"
3022 mjpeg_qsv_encoder_deps="libmfx"
3023 mjpeg_qsv_encoder_select="qsvenc"
3024 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
3025 mjpeg_vaapi_encoder_select="cbs_jpeg jpegtables vaapi_encode"
3026 mpeg1_cuvid_decoder_deps="cuvid"
3027 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
3028 mpeg2_crystalhd_decoder_select="crystalhd"
3029 mpeg2_cuvid_decoder_deps="cuvid"
3030 mpeg2_mmal_decoder_deps="mmal"
3031 mpeg2_mediacodec_decoder_deps="mediacodec"
3032 mpeg2_qsv_decoder_select="qsvdec mpegvideo_parser"
3033 mpeg2_qsv_encoder_select="qsvenc"
3034 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
3035 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
3036 mpeg4_crystalhd_decoder_select="crystalhd"
3037 mpeg4_cuvid_decoder_deps="cuvid"
3038 mpeg4_mediacodec_decoder_deps="mediacodec"
3039 mpeg4_mmal_decoder_deps="mmal"
3040 mpeg4_omx_encoder_deps="omx"
3041 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
3042 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
3043 msmpeg4_crystalhd_decoder_select="crystalhd"
3044 nvenc_h264_encoder_select="h264_nvenc_encoder"
3045 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
3046 vc1_crystalhd_decoder_select="crystalhd"
3047 vc1_cuvid_decoder_deps="cuvid"
3048 vc1_mmal_decoder_deps="mmal"
3049 vc1_qsv_decoder_select="qsvdec vc1_parser"
3050 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
3051 vp8_cuvid_decoder_deps="cuvid"
3052 vp8_mediacodec_decoder_deps="mediacodec"
3053 vp8_qsv_decoder_select="qsvdec vp8_parser"
3054 vp8_rkmpp_decoder_deps="rkmpp"
3055 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
3056 vp8_vaapi_encoder_select="vaapi_encode"
3057 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
3058 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
3059 vp9_cuvid_decoder_deps="cuvid"
3060 vp9_mediacodec_decoder_deps="mediacodec"
3061 vp9_rkmpp_decoder_deps="rkmpp"
3062 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
3063 vp9_vaapi_encoder_select="vaapi_encode"
3064 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
3065 wmv3_crystalhd_decoder_select="crystalhd"
3066
3067 # parsers
3068 aac_parser_select="adts_header"
3069 av1_parser_select="cbs_av1"
3070 h264_parser_select="golomb h264dsp h264parse"
3071 hevc_parser_select="hevcparse"
3072 mpegaudio_parser_select="mpegaudioheader"
3073 mpegvideo_parser_select="mpegvideo"
3074 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
3075 vc1_parser_select="vc1dsp"
3076
3077 # bitstream_filters
3078 aac_adtstoasc_bsf_select="adts_header"
3079 av1_metadata_bsf_select="cbs_av1"
3080 eac3_core_bsf_select="ac3_parser"
3081 filter_units_bsf_select="cbs"
3082 h264_metadata_bsf_deps="const_nan"
3083 h264_metadata_bsf_select="cbs_h264"
3084 h264_redundant_pps_bsf_select="cbs_h264"
3085 hevc_metadata_bsf_select="cbs_h265"
3086 mjpeg2jpeg_bsf_select="jpegtables"
3087 mpeg2_metadata_bsf_select="cbs_mpeg2"
3088 trace_headers_bsf_select="cbs"
3089 truehd_core_bsf_select="mlp_parser"
3090 vp9_metadata_bsf_select="cbs_vp9"
3091
3092 # external libraries
3093 aac_at_decoder_deps="audiotoolbox"
3094 aac_at_decoder_select="aac_adtstoasc_bsf"
3095 ac3_at_decoder_deps="audiotoolbox"
3096 ac3_at_decoder_select="ac3_parser"
3097 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
3098 alac_at_decoder_deps="audiotoolbox"
3099 amr_nb_at_decoder_deps="audiotoolbox"
3100 avisynth_deps_any="libdl LoadLibrary"
3101 avisynth_demuxer_deps="avisynth"
3102 avisynth_demuxer_select="riffdec"
3103 eac3_at_decoder_deps="audiotoolbox"
3104 eac3_at_decoder_select="ac3_parser"
3105 gsm_ms_at_decoder_deps="audiotoolbox"
3106 ilbc_at_decoder_deps="audiotoolbox"
3107 mp1_at_decoder_deps="audiotoolbox"
3108 mp2_at_decoder_deps="audiotoolbox"
3109 mp3_at_decoder_deps="audiotoolbox"
3110 mp1_at_decoder_select="mpegaudioheader"
3111 mp2_at_decoder_select="mpegaudioheader"
3112 mp3_at_decoder_select="mpegaudioheader"
3113 pcm_alaw_at_decoder_deps="audiotoolbox"
3114 pcm_mulaw_at_decoder_deps="audiotoolbox"
3115 qdmc_at_decoder_deps="audiotoolbox"
3116 qdm2_at_decoder_deps="audiotoolbox"
3117 aac_at_encoder_deps="audiotoolbox"
3118 aac_at_encoder_select="audio_frame_queue"
3119 alac_at_encoder_deps="audiotoolbox"
3120 alac_at_encoder_select="audio_frame_queue"
3121 ilbc_at_encoder_deps="audiotoolbox"
3122 ilbc_at_encoder_select="audio_frame_queue"
3123 pcm_alaw_at_encoder_deps="audiotoolbox"
3124 pcm_alaw_at_encoder_select="audio_frame_queue"
3125 pcm_mulaw_at_encoder_deps="audiotoolbox"
3126 pcm_mulaw_at_encoder_select="audio_frame_queue"
3127 chromaprint_muxer_deps="chromaprint"
3128 h264_videotoolbox_encoder_deps="pthreads"
3129 h264_videotoolbox_encoder_select="videotoolbox_encoder"
3130 hevc_videotoolbox_encoder_deps="pthreads"
3131 hevc_videotoolbox_encoder_select="videotoolbox_encoder"
3132 libaom_av1_decoder_deps="libaom"
3133 libaom_av1_encoder_deps="libaom"
3134 libaom_av1_encoder_select="extract_extradata_bsf"
3135 libaribb24_decoder_deps="libaribb24"
3136 libcelt_decoder_deps="libcelt"
3137 libcodec2_decoder_deps="libcodec2"
3138 libcodec2_encoder_deps="libcodec2"
3139 libdav1d_decoder_deps="libdav1d"
3140 libdavs2_decoder_deps="libdavs2"
3141 libfdk_aac_decoder_deps="libfdk_aac"
3142 libfdk_aac_encoder_deps="libfdk_aac"
3143 libfdk_aac_encoder_select="audio_frame_queue"
3144 libgme_demuxer_deps="libgme"
3145 libgsm_decoder_deps="libgsm"
3146 libgsm_encoder_deps="libgsm"
3147 libgsm_ms_decoder_deps="libgsm"
3148 libgsm_ms_encoder_deps="libgsm"
3149 libilbc_decoder_deps="libilbc"
3150 libilbc_encoder_deps="libilbc"
3151 libkvazaar_encoder_deps="libkvazaar"
3152 libmodplug_demuxer_deps="libmodplug"
3153 libmp3lame_encoder_deps="libmp3lame"
3154 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
3155 libopencore_amrnb_decoder_deps="libopencore_amrnb"
3156 libopencore_amrnb_encoder_deps="libopencore_amrnb"
3157 libopencore_amrnb_encoder_select="audio_frame_queue"
3158 libopencore_amrwb_decoder_deps="libopencore_amrwb"
3159 libopenh264_decoder_deps="libopenh264"
3160 libopenh264_decoder_select="h264_mp4toannexb_bsf"
3161 libopenh264_encoder_deps="libopenh264"
3162 libopenjpeg_decoder_deps="libopenjpeg"
3163 libopenjpeg_encoder_deps="libopenjpeg"
3164 libopenmpt_demuxer_deps="libopenmpt"
3165 libopus_decoder_deps="libopus"
3166 libopus_encoder_deps="libopus"
3167 libopus_encoder_select="audio_frame_queue"
3168 librsvg_decoder_deps="librsvg"
3169 libshine_encoder_deps="libshine"
3170 libshine_encoder_select="audio_frame_queue"
3171 libspeex_decoder_deps="libspeex"
3172 libspeex_encoder_deps="libspeex"
3173 libspeex_encoder_select="audio_frame_queue"
3174 libtheora_encoder_deps="libtheora"
3175 libtwolame_encoder_deps="libtwolame"
3176 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
3177 libvorbis_decoder_deps="libvorbis"
3178 libvorbis_encoder_deps="libvorbis libvorbisenc"
3179 libvorbis_encoder_select="audio_frame_queue"
3180 libvpx_vp8_decoder_deps="libvpx"
3181 libvpx_vp8_encoder_deps="libvpx"
3182 libvpx_vp9_decoder_deps="libvpx"
3183 libvpx_vp9_encoder_deps="libvpx"
3184 libwavpack_encoder_deps="libwavpack"
3185 libwavpack_encoder_select="audio_frame_queue"
3186 libwebp_encoder_deps="libwebp"
3187 libwebp_anim_encoder_deps="libwebp"
3188 libx262_encoder_deps="libx262"
3189 libx264_encoder_deps="libx264"
3190 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
3191 libx264rgb_encoder_select="libx264_encoder"
3192 libx265_encoder_deps="libx265"
3193 libxavs_encoder_deps="libxavs"
3194 libxavs2_encoder_deps="libxavs2"
3195 libxvid_encoder_deps="libxvid"
3196 libzvbi_teletext_decoder_deps="libzvbi"
3197 vapoursynth_demuxer_deps="vapoursynth"
3198 videotoolbox_suggest="coreservices"
3199 videotoolbox_deps="corefoundation coremedia corevideo"
3200 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
3201
3202 # demuxers / muxers
3203 ac3_demuxer_select="ac3_parser"
3204 aiff_muxer_select="iso_media"
3205 asf_demuxer_select="riffdec"
3206 asf_o_demuxer_select="riffdec"
3207 asf_muxer_select="riffenc"
3208 asf_stream_muxer_select="asf_muxer"
3209 avi_demuxer_select="iso_media riffdec exif"
3210 avi_muxer_select="riffenc"
3211 caf_demuxer_select="iso_media riffdec"
3212 caf_muxer_select="iso_media"
3213 dash_muxer_select="mp4_muxer"
3214 dash_demuxer_deps="libxml2"
3215 dirac_demuxer_select="dirac_parser"
3216 dts_demuxer_select="dca_parser"
3217 dtshd_demuxer_select="dca_parser"
3218 dv_demuxer_select="dvprofile"
3219 dv_muxer_select="dvprofile"
3220 dxa_demuxer_select="riffdec"
3221 eac3_demuxer_select="ac3_parser"
3222 f4v_muxer_select="mov_muxer"
3223 fifo_muxer_deps="threads"
3224 flac_demuxer_select="flac_parser"
3225 hds_muxer_select="flv_muxer"
3226 hls_muxer_select="mpegts_muxer"
3227 hls_muxer_suggest="gcrypt openssl"
3228 image2_alias_pix_demuxer_select="image2_demuxer"
3229 image2_brender_pix_demuxer_select="image2_demuxer"
3230 ipod_muxer_select="mov_muxer"
3231 ismv_muxer_select="mov_muxer"
3232 ivf_muxer_select="av1_metadata_bsf vp9_superframe_bsf"
3233 matroska_audio_muxer_select="matroska_muxer"
3234 matroska_demuxer_select="iso_media riffdec"
3235 matroska_demuxer_suggest="bzlib lzo zlib"
3236 matroska_muxer_select="iso_media riffenc"
3237 mmf_muxer_select="riffenc"
3238 mov_demuxer_select="iso_media riffdec"
3239 mov_demuxer_suggest="zlib"
3240 mov_muxer_select="iso_media riffenc rtpenc_chain"
3241 mp3_demuxer_select="mpegaudio_parser"
3242 mp3_muxer_select="mpegaudioheader"
3243 mp4_muxer_select="mov_muxer"
3244 mpegts_demuxer_select="iso_media"
3245 mpegts_muxer_select="adts_muxer latm_muxer"
3246 mpegtsraw_demuxer_select="mpegts_demuxer"
3247 mxf_d10_muxer_select="mxf_muxer"
3248 mxf_opatom_muxer_select="mxf_muxer"
3249 nut_muxer_select="riffenc"
3250 nuv_demuxer_select="riffdec"
3251 oga_muxer_select="ogg_muxer"
3252 ogg_demuxer_select="dirac_parse"
3253 ogv_muxer_select="ogg_muxer"
3254 opus_muxer_select="ogg_muxer"
3255 psp_muxer_select="mov_muxer"
3256 rtp_demuxer_select="sdp_demuxer"
3257 rtp_muxer_select="golomb"
3258 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3259 rtsp_demuxer_select="http_protocol rtpdec"
3260 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3261 sap_demuxer_select="sdp_demuxer"
3262 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3263 sdp_demuxer_select="rtpdec"
3264 smoothstreaming_muxer_select="ismv_muxer"
3265 spdif_demuxer_select="adts_header"
3266 spdif_muxer_select="adts_header"
3267 spx_muxer_select="ogg_muxer"
3268 swf_demuxer_suggest="zlib"
3269 tak_demuxer_select="tak_parser"
3270 tg2_muxer_select="mov_muxer"
3271 tgp_muxer_select="mov_muxer"
3272 vobsub_demuxer_select="mpegps_demuxer"
3273 w64_demuxer_select="wav_demuxer"
3274 w64_muxer_select="wav_muxer"
3275 wav_demuxer_select="riffdec"
3276 wav_muxer_select="riffenc"
3277 webm_muxer_select="iso_media riffenc"
3278 webm_dash_manifest_demuxer_select="matroska_demuxer"
3279 wtv_demuxer_select="mpegts_demuxer riffdec"
3280 wtv_muxer_select="mpegts_muxer riffenc"
3281 xmv_demuxer_select="riffdec"
3282 xwma_demuxer_select="riffdec"
3283
3284 # indevs / outdevs
3285 android_camera_indev_deps="android camera2ndk mediandk pthreads"
3286 android_camera_indev_extralibs="-landroid -lcamera2ndk -lmediandk"
3287 alsa_indev_deps="alsa"
3288 alsa_outdev_deps="alsa"
3289 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3290 avfoundation_indev_suggest="coregraphics applicationservices"
3291 avfoundation_indev_extralibs="-framework Foundation"
3292 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3293 caca_outdev_deps="libcaca"
3294 decklink_deps_any="libdl LoadLibrary"
3295 decklink_indev_deps="decklink threads"
3296 decklink_indev_extralibs="-lstdc++"
3297 decklink_outdev_deps="decklink threads"
3298 decklink_outdev_suggest="libklvanc"
3299 decklink_outdev_extralibs="-lstdc++"
3300 dshow_indev_deps="IBaseFilter"
3301 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3302 fbdev_indev_deps="linux_fb_h"
3303 fbdev_outdev_deps="linux_fb_h"
3304 gdigrab_indev_deps="CreateDIBSection"
3305 gdigrab_indev_extralibs="-lgdi32"
3306 gdigrab_indev_select="bmp_decoder"
3307 iec61883_indev_deps="libiec61883"
3308 jack_indev_deps="libjack"
3309 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3310 kmsgrab_indev_deps="libdrm"
3311 lavfi_indev_deps="avfilter"
3312 libcdio_indev_deps="libcdio"
3313 libdc1394_indev_deps="libdc1394"
3314 openal_indev_deps="openal"
3315 opengl_outdev_deps="opengl"
3316 opengl_outdev_suggest="sdl2"
3317 oss_indev_deps_any="sys_soundcard_h"
3318 oss_outdev_deps_any="sys_soundcard_h"
3319 pulse_indev_deps="libpulse"
3320 pulse_outdev_deps="libpulse"
3321 sdl2_outdev_deps="sdl2"
3322 sndio_indev_deps="sndio"
3323 sndio_outdev_deps="sndio"
3324 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3325 v4l2_indev_suggest="libv4l2"
3326 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3327 v4l2_outdev_suggest="libv4l2"
3328 vfwcap_indev_deps="vfw32 vfwcap_defines"
3329 xcbgrab_indev_deps="libxcb"
3330 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3331 xv_outdev_deps="xlib"
3332
3333 # protocols
3334 async_protocol_deps="threads"
3335 bluray_protocol_deps="libbluray"
3336 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3337 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl mbedtls"
3338 ffrtmpcrypt_protocol_select="tcp_protocol"
3339 ffrtmphttp_protocol_conflict="librtmp_protocol"
3340 ffrtmphttp_protocol_select="http_protocol"
3341 ftp_protocol_select="tcp_protocol"
3342 gopher_protocol_select="network"
3343 http_protocol_select="tcp_protocol"
3344 http_protocol_suggest="zlib"
3345 httpproxy_protocol_select="tcp_protocol"
3346 httpproxy_protocol_suggest="zlib"
3347 https_protocol_select="tls_protocol"
3348 https_protocol_suggest="zlib"
3349 icecast_protocol_select="http_protocol"
3350 mmsh_protocol_select="http_protocol"
3351 mmst_protocol_select="network"
3352 rtmp_protocol_conflict="librtmp_protocol"
3353 rtmp_protocol_select="tcp_protocol"
3354 rtmp_protocol_suggest="zlib"
3355 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3356 rtmpe_protocol_suggest="zlib"
3357 rtmps_protocol_conflict="librtmp_protocol"
3358 rtmps_protocol_select="tls_protocol"
3359 rtmps_protocol_suggest="zlib"
3360 rtmpt_protocol_select="ffrtmphttp_protocol"
3361 rtmpt_protocol_suggest="zlib"
3362 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3363 rtmpte_protocol_suggest="zlib"
3364 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3365 rtmpts_protocol_suggest="zlib"
3366 rtp_protocol_select="udp_protocol"
3367 schannel_conflict="openssl gnutls libtls mbedtls"
3368 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3369 sctp_protocol_select="network"
3370 securetransport_conflict="openssl gnutls libtls mbedtls"
3371 srtp_protocol_select="rtp_protocol srtp"
3372 tcp_protocol_select="network"
3373 tls_protocol_deps_any="gnutls openssl schannel securetransport libtls mbedtls"
3374 tls_protocol_select="tcp_protocol"
3375 udp_protocol_select="network"
3376 udplite_protocol_select="network"
3377 unix_protocol_deps="sys_un_h"
3378 unix_protocol_select="network"
3379
3380 # external library protocols
3381 librtmp_protocol_deps="librtmp"
3382 librtmpe_protocol_deps="librtmp"
3383 librtmps_protocol_deps="librtmp"
3384 librtmpt_protocol_deps="librtmp"
3385 librtmpte_protocol_deps="librtmp"
3386 libsmbclient_protocol_deps="libsmbclient gplv3"
3387 libsrt_protocol_deps="libsrt"
3388 libsrt_protocol_select="network"
3389 libssh_protocol_deps="libssh"
3390 libtls_conflict="openssl gnutls mbedtls"
3391
3392 # filters
3393 afftdn_filter_deps="avcodec"
3394 afftdn_filter_select="fft"
3395 afftfilt_filter_deps="avcodec"
3396 afftfilt_filter_select="fft"
3397 afir_filter_deps="avcodec"
3398 afir_filter_select="fft"
3399 amovie_filter_deps="avcodec avformat"
3400 aresample_filter_deps="swresample"
3401 ass_filter_deps="libass"
3402 atempo_filter_deps="avcodec"
3403 atempo_filter_select="rdft"
3404 avgblur_opencl_filter_deps="opencl"
3405 azmq_filter_deps="libzmq"
3406 blackframe_filter_deps="gpl"
3407 bm3d_filter_deps="avcodec"
3408 bm3d_filter_select="dct"
3409 boxblur_filter_deps="gpl"
3410 boxblur_opencl_filter_deps="opencl gpl"
3411 bs2b_filter_deps="libbs2b"
3412 colormatrix_filter_deps="gpl"
3413 convolution_opencl_filter_deps="opencl"
3414 convolve_filter_deps="avcodec"
3415 convolve_filter_select="fft"
3416 coreimage_filter_deps="coreimage appkit"
3417 coreimage_filter_extralibs="-framework OpenGL"
3418 coreimagesrc_filter_deps="coreimage appkit"
3419 coreimagesrc_filter_extralibs="-framework OpenGL"
3420 cover_rect_filter_deps="avcodec avformat gpl"
3421 cropdetect_filter_deps="gpl"
3422 deconvolve_filter_deps="avcodec"
3423 deconvolve_filter_select="fft"
3424 deinterlace_qsv_filter_deps="libmfx"
3425 deinterlace_vaapi_filter_deps="vaapi"
3426 delogo_filter_deps="gpl"
3427 denoise_vaapi_filter_deps="vaapi"
3428 deshake_filter_select="pixelutils"
3429 dilation_opencl_filter_deps="opencl"
3430 drawtext_filter_deps="libfreetype"
3431 drawtext_filter_suggest="libfontconfig libfribidi"
3432 elbg_filter_deps="avcodec"
3433 eq_filter_deps="gpl"
3434 erosion_opencl_filter_deps="opencl"
3435 fftfilt_filter_deps="avcodec"
3436 fftfilt_filter_select="rdft"
3437 fftdnoiz_filter_deps="avcodec"
3438 fftdnoiz_filter_select="fft"
3439 find_rect_filter_deps="avcodec avformat gpl"
3440 firequalizer_filter_deps="avcodec"
3441 firequalizer_filter_select="rdft"
3442 flite_filter_deps="libflite"
3443 framerate_filter_select="scene_sad"
3444 freezedetect_filter_select="scene_sad"
3445 frei0r_filter_deps="frei0r libdl"
3446 frei0r_src_filter_deps="frei0r libdl"
3447 fspp_filter_deps="gpl"
3448 geq_filter_deps="gpl"
3449 histeq_filter_deps="gpl"
3450 hqdn3d_filter_deps="gpl"
3451 interlace_filter_deps="gpl"
3452 kerndeint_filter_deps="gpl"
3453 ladspa_filter_deps="ladspa libdl"
3454 lensfun_filter_deps="liblensfun version3"
3455 lv2_filter_deps="lv2"
3456 mcdeint_filter_deps="avcodec gpl"
3457 movie_filter_deps="avcodec avformat"
3458 mpdecimate_filter_deps="gpl"
3459 mpdecimate_filter_select="pixelutils"
3460 minterpolate_filter_select="scene_sad"
3461 mptestsrc_filter_deps="gpl"
3462 negate_filter_deps="lut_filter"
3463 nnedi_filter_deps="gpl"
3464 ocr_filter_deps="libtesseract"
3465 ocv_filter_deps="libopencv"
3466 openclsrc_filter_deps="opencl"
3467 overlay_opencl_filter_deps="opencl"
3468 overlay_qsv_filter_deps="libmfx"
3469 overlay_qsv_filter_select="qsvvpp"
3470 owdenoise_filter_deps="gpl"
3471 pan_filter_deps="swresample"
3472 perspective_filter_deps="gpl"
3473 phase_filter_deps="gpl"
3474 pp7_filter_deps="gpl"
3475 pp_filter_deps="gpl postproc"
3476 prewitt_opencl_filter_deps="opencl"
3477 procamp_vaapi_filter_deps="vaapi"
3478 program_opencl_filter_deps="opencl"
3479 pullup_filter_deps="gpl"
3480 removelogo_filter_deps="avcodec avformat swscale"
3481 repeatfields_filter_deps="gpl"
3482 resample_filter_deps="avresample"
3483 roberts_opencl_filter_deps="opencl"
3484 rubberband_filter_deps="librubberband"
3485 sab_filter_deps="gpl swscale"
3486 scale2ref_filter_deps="swscale"
3487 scale_filter_deps="swscale"
3488 scale_qsv_filter_deps="libmfx"
3489 select_filter_select="scene_sad"
3490 sharpness_vaapi_filter_deps="vaapi"
3491 showcqt_filter_deps="avcodec avformat swscale"
3492 showcqt_filter_suggest="libfontconfig libfreetype"
3493 showcqt_filter_select="fft"
3494 showfreqs_filter_deps="avcodec"
3495 showfreqs_filter_select="fft"
3496 showspectrum_filter_deps="avcodec"
3497 showspectrum_filter_select="fft"
3498 showspectrumpic_filter_deps="avcodec"
3499 showspectrumpic_filter_select="fft"
3500 signature_filter_deps="gpl avcodec avformat"
3501 smartblur_filter_deps="gpl swscale"
3502 sobel_opencl_filter_deps="opencl"
3503 sofalizer_filter_deps="libmysofa avcodec"
3504 sofalizer_filter_select="fft"
3505 spectrumsynth_filter_deps="avcodec"
3506 spectrumsynth_filter_select="fft"
3507 spp_filter_deps="gpl avcodec"
3508 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3509 sr_filter_deps="avformat swscale"
3510 sr_filter_select="dnn"
3511 stereo3d_filter_deps="gpl"
3512 subtitles_filter_deps="avformat avcodec libass"
3513 super2xsai_filter_deps="gpl"
3514 pixfmts_super2xsai_test_deps="super2xsai_filter"
3515 tinterlace_filter_deps="gpl"
3516 tinterlace_merge_test_deps="tinterlace_filter"
3517 tinterlace_pad_test_deps="tinterlace_filter"
3518 tonemap_filter_deps="const_nan"
3519 tonemap_opencl_filter_deps="opencl const_nan"
3520 transpose_opencl_filter_deps="opencl"
3521 transpose_vaapi_filter_deps="vaapi VAProcPipelineCaps_rotation_flags"
3522 unsharp_opencl_filter_deps="opencl"
3523 uspp_filter_deps="gpl avcodec"
3524 vaguedenoiser_filter_deps="gpl"
3525 vidstabdetect_filter_deps="libvidstab"
3526 vidstabtransform_filter_deps="libvidstab"
3527 libvmaf_filter_deps="libvmaf pthreads"
3528 zmq_filter_deps="libzmq"
3529 zoompan_filter_deps="swscale"
3530 zscale_filter_deps="libzimg const_nan"
3531 scale_vaapi_filter_deps="vaapi"
3532 vpp_qsv_filter_deps="libmfx"
3533 vpp_qsv_filter_select="qsvvpp"
3534 yadif_cuda_filter_deps="ffnvcodec cuda_nvcc"
3535
3536 # examples
3537 avio_dir_cmd_deps="avformat avutil"
3538 avio_reading_deps="avformat avcodec avutil"
3539 decode_audio_example_deps="avcodec avutil"
3540 decode_video_example_deps="avcodec avutil"
3541 demuxing_decoding_example_deps="avcodec avformat avutil"
3542 encode_audio_example_deps="avcodec avutil"
3543 encode_video_example_deps="avcodec avutil"
3544 extract_mvs_example_deps="avcodec avformat avutil"
3545 filter_audio_example_deps="avfilter avutil"
3546 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3547 filtering_video_example_deps="avfilter avcodec avformat avutil"
3548 http_multiclient_example_deps="avformat avutil fork"
3549 hw_decode_example_deps="avcodec avformat avutil"
3550 metadata_example_deps="avformat avutil"
3551 muxing_example_deps="avcodec avformat avutil swscale"
3552 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3553 remuxing_example_deps="avcodec avformat avutil"
3554 resampling_audio_example_deps="avutil swresample"
3555 scaling_video_example_deps="avutil swscale"
3556 transcode_aac_example_deps="avcodec avformat swresample"
3557 transcoding_example_deps="avfilter avcodec avformat avutil"
3558 vaapi_encode_example_deps="avcodec avutil h264_vaapi_encoder"
3559 vaapi_transcode_example_deps="avcodec avformat avutil h264_vaapi_encoder"
3560
3561 # EXTRALIBS_LIST
3562 cpu_init_extralibs="pthreads_extralibs"
3563 cws2fws_extralibs="zlib_extralibs"
3564
3565 # libraries, in any order
3566 avcodec_deps="avutil"
3567 avcodec_suggest="libm"
3568 avcodec_select="null_bsf"
3569 avdevice_deps="avformat avcodec avutil"
3570 avdevice_suggest="libm"
3571 avfilter_deps="avutil"
3572 avfilter_suggest="libm"
3573 avformat_deps="avcodec avutil"
3574 avformat_suggest="libm network zlib"
3575 avresample_deps="avutil"
3576 avresample_suggest="libm"
3577 avutil_suggest="clock_gettime ffnvcodec libm libdrm libmfx opencl user32 vaapi videotoolbox corefoundation corevideo coremedia bcrypt"
3578 postproc_deps="avutil gpl"
3579 postproc_suggest="libm"
3580 swresample_deps="avutil"
3581 swresample_suggest="libm libsoxr"
3582 swscale_deps="avutil"
3583 swscale_suggest="libm"
3584
3585 avcodec_extralibs="pthreads_extralibs iconv_extralibs dxva2_extralibs"
3586 avfilter_extralibs="pthreads_extralibs"
3587 avutil_extralibs="d3d11va_extralibs nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3588
3589 # programs
3590 ffmpeg_deps="avcodec avfilter avformat"
3591 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3592                hflip_filter null_filter
3593                transpose_filter trim_filter vflip_filter"
3594 ffmpeg_suggest="ole32 psapi shell32"
3595 ffplay_deps="avcodec avformat swscale swresample sdl2"
3596 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3597 ffplay_suggest="shell32"
3598 ffprobe_deps="avcodec avformat"
3599 ffprobe_suggest="shell32"
3600
3601 # documentation
3602 podpages_deps="perl"
3603 manpages_deps="perl pod2man"
3604 htmlpages_deps="perl"
3605 htmlpages_deps_any="makeinfo_html texi2html"
3606 txtpages_deps="perl makeinfo"
3607 doc_deps_any="manpages htmlpages podpages txtpages"
3608
3609 # default parameters
3610
3611 logfile="ffbuild/config.log"
3612
3613 # installation paths
3614 prefix_default="/usr/local"
3615 bindir_default='${prefix}/bin'
3616 datadir_default='${prefix}/share/ffmpeg'
3617 docdir_default='${prefix}/share/doc/ffmpeg'
3618 incdir_default='${prefix}/include'
3619 libdir_default='${prefix}/lib'
3620 mandir_default='${prefix}/share/man'
3621
3622 # toolchain
3623 ar_default="ar"
3624 cc_default="gcc"
3625 cxx_default="g++"
3626 host_cc_default="gcc"
3627 doxygen_default="doxygen"
3628 install="install"
3629 ln_s_default="ln -s -f"
3630 nm_default="nm -g"
3631 pkg_config_default=pkg-config
3632 ranlib_default="ranlib"
3633 strip_default="strip"
3634 version_script='--version-script'
3635 objformat="elf32"
3636 x86asmexe_default="nasm"
3637 windres_default="windres"
3638 nvcc_default="nvcc"
3639 nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
3640 striptype="direct"
3641
3642 # OS
3643 target_os_default=$(tolower $(uname -s))
3644 host_os=$target_os_default
3645
3646 # machine
3647 if test "$target_os_default" = aix; then
3648     arch_default=$(uname -p)
3649     strip_default="strip -X32_64"
3650     nm_default="nm -g -X32_64"
3651 else
3652     arch_default=$(uname -m)
3653 fi
3654 cpu="generic"
3655 intrinsics="none"
3656
3657 # configurable options
3658 enable $PROGRAM_LIST
3659 enable $DOCUMENT_LIST
3660 enable $EXAMPLE_LIST
3661 enable $(filter_out avresample $LIBRARY_LIST)
3662 enable stripping
3663
3664 enable asm
3665 enable debug
3666 enable doc
3667 enable faan faandct faanidct
3668 enable optimizations
3669 enable runtime_cpudetect
3670 enable safe_bitstream_reader
3671 enable static
3672 enable swscale_alpha
3673 enable valgrind_backtrace
3674
3675 sws_max_filter_size_default=256
3676 set_default sws_max_filter_size
3677
3678 # internal components are enabled by default
3679 enable $EXTRALIBS_LIST
3680
3681 # Avoid external, non-system, libraries getting enabled by dependency resolution
3682 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3683
3684 # build settings
3685 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3686 LIBPREF="lib"
3687 LIBSUF=".a"
3688 FULLNAME='$(NAME)$(BUILDSUF)'
3689 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3690 SLIBPREF="lib"
3691 SLIBSUF=".so"
3692 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3693 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3694 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3695 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3696 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3697 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3698 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3699
3700 asflags_filter=echo
3701 cflags_filter=echo
3702 ldflags_filter=echo
3703
3704 AS_C='-c'
3705 AS_O='-o $@'
3706 CC_C='-c'
3707 CC_E='-E -o $@'
3708 CC_O='-o $@'
3709 CXX_C='-c'
3710 CXX_O='-o $@'
3711 OBJCC_C='-c'
3712 OBJCC_E='-E -o $@'
3713 OBJCC_O='-o $@'
3714 X86ASM_O='-o $@'
3715 LD_O='-o $@'
3716 LD_LIB='-l%'
3717 LD_PATH='-L'
3718 HOSTCC_C='-c'
3719 HOSTCC_E='-E -o $@'
3720 HOSTCC_O='-o $@'
3721 HOSTLD_O='-o $@'
3722 NVCC_C='-c'
3723 NVCC_O='-o $@'
3724
3725 host_extralibs='-lm'
3726 host_cflags_filter=echo
3727 host_ldflags_filter=echo
3728
3729 target_path='$(CURDIR)'
3730
3731 # since the object filename is not given with the -MM flag, the compiler
3732 # is only able to print the basename, and we must add the path ourselves
3733 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3734 DEPFLAGS='-MM'
3735
3736 mkdir -p ffbuild
3737
3738 # find source path
3739 if test -f configure; then
3740     source_path=.
3741 else
3742     source_path=$(cd $(dirname "$0"); pwd)
3743     case "$source_path" in
3744         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3745     esac
3746     test -e "$source_path/config.h" &&
3747         die "Out of tree builds are impossible with config.h in source dir."
3748 fi
3749
3750 for v in "$@"; do
3751     r=${v#*=}
3752     l=${v%"$r"}
3753     r=$(sh_quote "$r")
3754     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3755 done
3756
3757 find_things_extern(){
3758     thing=$1
3759     pattern=$2
3760     file=$source_path/$3
3761     out=${4:-$thing}
3762     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$out/p" "$file"
3763 }
3764
3765 find_filters_extern(){
3766     file=$source_path/$1
3767     sed -n 's/^extern AVFilter ff_[avfsinkrc]\{2,5\}_\([[:alnum:]_]\{1,\}\);/\1_filter/p' $file
3768 }
3769
3770 FILTER_LIST=$(find_filters_extern libavfilter/allfilters.c)
3771 OUTDEV_LIST=$(find_things_extern muxer AVOutputFormat libavdevice/alldevices.c outdev)
3772 INDEV_LIST=$(find_things_extern demuxer AVInputFormat libavdevice/alldevices.c indev)
3773 MUXER_LIST=$(find_things_extern muxer AVOutputFormat libavformat/allformats.c)
3774 DEMUXER_LIST=$(find_things_extern demuxer AVInputFormat libavformat/allformats.c)
3775 ENCODER_LIST=$(find_things_extern encoder AVCodec libavcodec/allcodecs.c)
3776 DECODER_LIST=$(find_things_extern decoder AVCodec libavcodec/allcodecs.c)
3777 CODEC_LIST="
3778     $ENCODER_LIST
3779     $DECODER_LIST
3780 "
3781 PARSER_LIST=$(find_things_extern parser AVCodecParser libavcodec/parsers.c)
3782 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3783 HWACCEL_LIST=$(find_things_extern hwaccel AVHWAccel libavcodec/hwaccels.h)
3784 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3785
3786 AVCODEC_COMPONENTS_LIST="
3787     $BSF_LIST
3788     $DECODER_LIST
3789     $ENCODER_LIST
3790     $HWACCEL_LIST
3791     $PARSER_LIST
3792 "
3793
3794 AVDEVICE_COMPONENTS_LIST="
3795     $INDEV_LIST
3796     $OUTDEV_LIST
3797 "
3798
3799 AVFILTER_COMPONENTS_LIST="
3800     $FILTER_LIST
3801 "
3802
3803 AVFORMAT_COMPONENTS_LIST="
3804     $DEMUXER_LIST
3805     $MUXER_LIST
3806     $PROTOCOL_LIST
3807 "
3808
3809 ALL_COMPONENTS="
3810     $AVCODEC_COMPONENTS_LIST
3811     $AVDEVICE_COMPONENTS_LIST
3812     $AVFILTER_COMPONENTS_LIST
3813     $AVFORMAT_COMPONENTS_LIST
3814 "
3815
3816 for n in $COMPONENT_LIST; do
3817     v=$(toupper ${n%s})_LIST
3818     eval enable \$$v
3819     eval ${n}_if_any="\$$v"
3820 done
3821
3822 enable $ARCH_EXT_LIST
3823
3824 die_unknown(){
3825     echo "Unknown option \"$1\"."
3826     echo "See $0 --help for available options."
3827     exit 1
3828 }
3829
3830 print_in_columns() {
3831     cols=$(expr $ncols / 24)
3832     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3833 }
3834
3835 show_list() {
3836     suffix=_$1
3837     shift
3838     echo $* | sed s/$suffix//g | print_in_columns
3839     exit 0
3840 }
3841
3842 rand_list(){
3843     IFS=', '
3844     set -- $*
3845     unset IFS
3846     for thing; do
3847         comp=${thing%:*}
3848         prob=${thing#$comp}
3849         prob=${prob#:}
3850         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3851         echo "prob ${prob:-0.5}"
3852         printf '%s\n' $comp
3853     done
3854 }
3855
3856 do_random(){
3857     action=$1
3858     shift
3859     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3860     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3861 }
3862
3863 for opt do
3864     optval="${opt#*=}"
3865     case "$opt" in
3866         --extra-ldflags=*)
3867             add_ldflags $optval
3868         ;;
3869         --extra-ldexeflags=*)
3870             add_ldexeflags $optval
3871         ;;
3872         --extra-ldsoflags=*)
3873             add_ldsoflags $optval
3874         ;;
3875         --extra-ldlibflags=*)
3876             warn "The --extra-ldlibflags option is only provided for compatibility and will be\n"\
3877                  "removed in the future. Use --extra-ldsoflags instead."
3878             add_ldsoflags $optval
3879         ;;
3880         --extra-libs=*)
3881             add_extralibs $optval
3882         ;;
3883         --disable-devices)
3884             disable $INDEV_LIST $OUTDEV_LIST
3885         ;;
3886         --enable-debug=*)
3887             debuglevel="$optval"
3888         ;;
3889         --disable-programs)
3890             disable $PROGRAM_LIST
3891         ;;
3892         --disable-everything)
3893             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3894         ;;
3895         --disable-all)
3896             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3897             disable $LIBRARY_LIST $PROGRAM_LIST doc
3898             enable avutil
3899         ;;
3900         --enable-random|--disable-random)
3901             action=${opt%%-random}
3902             do_random ${action#--} $COMPONENT_LIST
3903         ;;
3904         --enable-random=*|--disable-random=*)
3905             action=${opt%%-random=*}
3906             do_random ${action#--} $optval
3907         ;;
3908         --enable-sdl)
3909             enable sdl2
3910         ;;
3911         --enable-*=*|--disable-*=*)
3912             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3913             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3914             eval list=\$$(toupper $thing)_LIST
3915             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3916             list=$(filter "$name" $list)
3917             [ "$list" = "" ] && warn "Option $opt did not match anything"
3918             test $action = enable && warn_if_gets_disabled $list
3919             $action $list
3920         ;;
3921         --enable-yasm|--disable-yasm)
3922             warn "The ${opt} option is only provided for compatibility and will be\n"\
3923                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3924             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3925         ;;
3926         --yasmexe=*)
3927             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3928                  "removed in the future. Use --x86asmexe instead."
3929             x86asmexe="$optval"
3930         ;;
3931         --enable-?*|--disable-?*)
3932             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3933             if is_in $option $COMPONENT_LIST; then
3934                 test $action = disable && action=unset
3935                 eval $action \$$(toupper ${option%s})_LIST
3936             elif is_in $option $CMDLINE_SELECT; then
3937                 $action $option
3938             else
3939                 die_unknown $opt
3940             fi
3941         ;;
3942         --list-*)
3943             NAME="${opt#--list-}"
3944             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3945             NAME=${NAME%s}
3946             eval show_list $NAME \$$(toupper $NAME)_LIST
3947         ;;
3948         --help|-h) show_help
3949         ;;
3950         --quiet|-q) quiet=yes
3951         ;;
3952         --fatal-warnings) enable fatal_warnings
3953         ;;
3954         --libfuzzer=*)
3955             libfuzzer_path="$optval"
3956         ;;
3957         *)
3958             optname="${opt%%=*}"
3959             optname="${optname#--}"
3960             optname=$(echo "$optname" | sed 's/-/_/g')
3961             if is_in $optname $CMDLINE_SET; then
3962                 eval $optname='$optval'
3963             elif is_in $optname $CMDLINE_APPEND; then
3964                 append $optname "$optval"
3965             else
3966                 die_unknown $opt
3967             fi
3968         ;;
3969     esac
3970 done
3971
3972 for e in $env; do
3973     eval "export $e"
3974 done
3975
3976 if disabled autodetect; then
3977
3978     # Unless iconv is explicitely disabled by the user, we still want to probe
3979     # for the iconv from the libc.
3980     disabled iconv || enable libc_iconv
3981
3982     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3983     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3984 fi
3985 # Mark specifically enabled, but normally autodetected libraries as requested.
3986 for lib in $AUTODETECT_LIBS; do
3987     enabled $lib && request $lib
3988 done
3989 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
3990 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3991 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3992
3993 disabled logging && logfile=/dev/null
3994
3995 # command line configuration sanity checks
3996
3997 # we need to build at least one lib type
3998 if ! enabled_any static shared; then
3999     cat <<EOF
4000 At least one library type must be built.
4001 Specify --enable-static to build the static libraries or --enable-shared to
4002 build the shared libraries as well. To only build the shared libraries specify
4003 --disable-static in addition to --enable-shared.
4004 EOF
4005     exit 1
4006 fi
4007
4008 die_license_disabled() {
4009     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
4010 }
4011
4012 die_license_disabled_gpl() {
4013     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
4014 }
4015
4016 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
4017 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
4018
4019 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
4020 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
4021
4022 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4023
4024 if enabled nonfree; then
4025     license="nonfree and unredistributable"
4026 elif enabled gplv3; then
4027     license="GPL version 3 or later"
4028 elif enabled lgplv3; then
4029     license="LGPL version 3 or later"
4030 elif enabled gpl; then
4031     license="GPL version 2 or later"
4032 else
4033     license="LGPL version 2.1 or later"
4034 fi
4035
4036 enabled_all gnutls openssl &&
4037     die "GnuTLS and OpenSSL must not be enabled at the same time."
4038
4039 enabled_all gnutls mbedtls &&
4040     die "GnuTLS and mbedTLS must not be enabled at the same time."
4041
4042 enabled_all openssl mbedtls &&
4043     die "OpenSSL and mbedTLS must not be enabled at the same time."
4044
4045 # Disable all the library-specific components if the library itself
4046 # is disabled, see AVCODEC_LIST and following _LIST variables.
4047
4048 disable_components(){
4049     disabled ${1} && disable $(
4050         eval components="\$$(toupper ${1})_COMPONENTS"
4051         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
4052     )
4053 }
4054
4055 map 'disable_components $v' $LIBRARY_LIST
4056
4057 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
4058 set >> $logfile
4059
4060 test -n "$valgrind" && toolchain="valgrind-memcheck"
4061
4062 enabled ossfuzz && ! echo $CFLAGS | grep -q -- "-fsanitize="  && ! echo $CFLAGS | grep -q -- "-fcoverage-mapping" &&{
4063     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
4064     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
4065 }
4066
4067 case "$toolchain" in
4068     *-asan)
4069         cc_default="${toolchain%-asan}"
4070         add_cflags  -fsanitize=address
4071         add_ldflags -fsanitize=address
4072     ;;
4073     *-msan)
4074         cc_default="${toolchain%-msan}"
4075         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
4076         add_ldflags -fsanitize=memory
4077     ;;
4078     *-tsan)
4079         cc_default="${toolchain%-tsan}"
4080         add_cflags  -fsanitize=thread
4081         add_ldflags -fsanitize=thread
4082         case "$toolchain" in
4083             gcc-tsan)
4084                 add_cflags  -fPIC
4085                 add_ldflags -fPIC
4086                 ;;
4087         esac
4088     ;;
4089     *-usan)
4090         cc_default="${toolchain%-usan}"
4091         add_cflags  -fsanitize=undefined
4092         add_ldflags -fsanitize=undefined
4093     ;;
4094     valgrind-*)
4095         target_exec_default="valgrind"
4096         case "$toolchain" in
4097             valgrind-massif)
4098                 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"
4099                 ;;
4100             valgrind-memcheck)
4101                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
4102                 ;;
4103         esac
4104     ;;
4105     msvc)
4106         # Check whether the current MSVC version needs the C99 converter.
4107         # From MSVC 2013 (compiler major version 18) onwards, it does actually
4108         # support enough of C99 to build ffmpeg. Default to the new
4109         # behaviour if the regexp was unable to match anything, since this
4110         # successfully parses the version number of existing supported
4111         # versions that require the converter (MSVC 2010 and 2012).
4112         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
4113         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
4114             cc_default="cl"
4115             cxx_default="cl"
4116         else
4117             die "Unsupported MSVC version (2013 or newer required)"
4118         fi
4119         ld_default="$source_path/compat/windows/mslink"
4120         nm_default="dumpbin -symbols"
4121         ar_default="lib"
4122         case "$arch" in
4123         aarch64|arm64)
4124             as_default="armasm64"
4125             ;;
4126         arm*)
4127             as_default="armasm"
4128             ;;
4129         esac
4130         target_os_default="win32"
4131         # Use a relative path for TMPDIR. This makes sure all the
4132         # ffconf temp files are written with a relative path, avoiding
4133         # issues with msys/win32 path conversion for MSVC parameters
4134         # such as -Fo<file> or -out:<file>.
4135         TMPDIR=.
4136     ;;
4137     icl)
4138         cc_default="icl"
4139         ld_default="xilink"
4140         nm_default="dumpbin -symbols"
4141         ar_default="xilib"
4142         target_os_default="win32"
4143         TMPDIR=.
4144     ;;
4145     gcov)
4146         add_cflags  -fprofile-arcs -ftest-coverage
4147         add_ldflags -fprofile-arcs -ftest-coverage
4148     ;;
4149     llvm-cov)
4150         add_cflags -fprofile-arcs -ftest-coverage
4151         add_ldflags --coverage
4152     ;;
4153     hardened)
4154         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
4155         add_cflags   -fno-strict-overflow -fstack-protector-all
4156         add_ldflags  -Wl,-z,relro -Wl,-z,now
4157         add_cflags   -fPIE
4158         add_ldexeflags -fPIE -pie
4159     ;;
4160     ?*)
4161         die "Unknown toolchain $toolchain"
4162     ;;
4163 esac
4164
4165 if test -n "$cross_prefix"; then
4166     test -n "$arch" && test -n "$target_os" ||
4167         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
4168     enable cross_compile
4169 fi
4170
4171 set_default target_os
4172 if test "$target_os" = android; then
4173     cc_default="clang"
4174 fi
4175
4176 ar_default="${cross_prefix}${ar_default}"
4177 cc_default="${cross_prefix}${cc_default}"
4178 cxx_default="${cross_prefix}${cxx_default}"
4179 nm_default="${cross_prefix}${nm_default}"
4180 pkg_config_default="${cross_prefix}${pkg_config_default}"
4181 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
4182     ranlib_default="${cross_prefix}${ranlib_default} -D"
4183 else
4184     ranlib_default="${cross_prefix}${ranlib_default}"
4185 fi
4186 strip_default="${cross_prefix}${strip_default}"
4187 windres_default="${cross_prefix}${windres_default}"
4188
4189 sysinclude_default="${sysroot}/usr/include"
4190
4191 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
4192     target_exec x86asmexe nvcc
4193 enabled cross_compile || host_cc_default=$cc
4194 set_default host_cc
4195
4196 pkg_config_fail_message=""
4197 if ! $pkg_config --version >/dev/null 2>&1; then
4198     warn "$pkg_config not found, library detection may fail."
4199     pkg_config=false
4200 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
4201     pkg_config_fail_message="
4202 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
4203 fi
4204
4205 if test $doxygen != $doxygen_default && \
4206   ! $doxygen --version >/dev/null 2>&1; then
4207     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
4208 fi
4209
4210 exesuf() {
4211     case $1 in
4212         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
4213     esac
4214 }
4215
4216 EXESUF=$(exesuf $target_os)
4217 HOSTEXESUF=$(exesuf $host_os)
4218
4219 # set temporary file name
4220 : ${TMPDIR:=$TEMPDIR}
4221 : ${TMPDIR:=$TMP}
4222 : ${TMPDIR:=/tmp}
4223
4224 if [ -n "$tempprefix" ] ; then
4225     mktemp(){
4226         tmpname="$tempprefix.${HOSTNAME}.${UID}"
4227         echo "$tmpname"
4228         mkdir "$tmpname"
4229     }
4230 elif ! test_cmd mktemp -u XXXXXX; then
4231     # simple replacement for missing mktemp
4232     # NOT SAFE FOR GENERAL USE
4233     mktemp(){
4234         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
4235         echo "$tmpname"
4236         mkdir "$tmpname"
4237     }
4238 fi
4239
4240 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
4241     die "Unable to create temporary directory in $TMPDIR."
4242
4243 tmpfile(){
4244     tmp="${FFTMPDIR}/test"$2
4245     (set -C; exec > $tmp) 2> /dev/null ||
4246         die "Unable to create temporary file in $FFTMPDIR."
4247     eval $1=$tmp
4248 }
4249
4250 trap 'rm -rf -- "$FFTMPDIR"' EXIT
4251 trap 'exit 2' INT
4252
4253 tmpfile TMPASM .asm
4254 tmpfile TMPC   .c
4255 tmpfile TMPCPP .cpp
4256 tmpfile TMPE   $EXESUF
4257 tmpfile TMPH   .h
4258 tmpfile TMPM   .m
4259 tmpfile TMPCU  .cu
4260 tmpfile TMPO   .o
4261 tmpfile TMPS   .S
4262 tmpfile TMPSH  .sh
4263 tmpfile TMPV   .ver
4264
4265 unset -f mktemp
4266
4267 chmod +x $TMPE
4268
4269 # make sure we can execute files in $TMPDIR
4270 cat > $TMPSH 2>> $logfile <<EOF
4271 #! /bin/sh
4272 EOF
4273 chmod +x $TMPSH >> $logfile 2>&1
4274 if ! $TMPSH >> $logfile 2>&1; then
4275     cat <<EOF
4276 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
4277 variable to another directory and make sure that it is not mounted noexec.
4278 EOF
4279     die "Sanity test failed."
4280 fi
4281
4282 armasm_flags(){
4283     for flag; do
4284         case $flag in
4285             # Filter out MSVC cl.exe options from cflags that shouldn't
4286             # be passed to gas-preprocessor
4287             -M[TD]*)                                            ;;
4288             *)                  echo $flag                      ;;
4289         esac
4290    done
4291 }
4292
4293 cparser_flags(){
4294     for flag; do
4295         case $flag in
4296             -Wno-switch)             echo -Wno-switch-enum ;;
4297             -Wno-format-zero-length) ;;
4298             -Wdisabled-optimization) ;;
4299             -Wno-pointer-sign)       echo -Wno-other ;;
4300             *)                       echo $flag ;;
4301         esac
4302     done
4303 }
4304
4305 msvc_common_flags(){
4306     for flag; do
4307         case $flag in
4308             # In addition to specifying certain flags under the compiler
4309             # specific filters, they must be specified here as well or else the
4310             # generic catch all at the bottom will print the original flag.
4311             -Wall)                ;;
4312             -Wextra)              ;;
4313             -std=c99)             ;;
4314             # Common flags
4315             -fomit-frame-pointer) ;;
4316             -g)                   echo -Z7 ;;
4317             -fno-math-errno)      ;;
4318             -fno-common)          ;;
4319             -fno-signed-zeros)    ;;
4320             -fPIC)                ;;
4321             -mthumb)              ;;
4322             -march=*)             ;;
4323             -lz)                  echo zlib.lib ;;
4324             -lx264)               echo libx264.lib ;;
4325             -lstdc++)             ;;
4326             -l*)                  echo ${flag#-l}.lib ;;
4327             -LARGEADDRESSAWARE)   echo $flag ;;
4328             -L*)                  echo -libpath:${flag#-L} ;;
4329             *)                    echo $flag ;;
4330         esac
4331     done
4332 }
4333
4334 msvc_flags(){
4335     msvc_common_flags "$@"
4336     for flag; do
4337         case $flag in
4338             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4339                                        -wd4554 ;;
4340             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4341                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4342                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4343                                        -wd4307 \
4344                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4345         esac
4346     done
4347 }
4348
4349 icl_flags(){
4350     msvc_common_flags "$@"
4351     for flag; do
4352         case $flag in
4353             # Despite what Intel's documentation says -Wall, which is supported
4354             # on Windows, does enable remarks so disable them here.
4355             -Wall)                echo $flag -Qdiag-disable:remark ;;
4356             -std=c99)             echo -Qstd=c99 ;;
4357             -flto)                echo -ipo ;;
4358         esac
4359     done
4360 }
4361
4362 icc_flags(){
4363     for flag; do
4364         case $flag in
4365             -flto)                echo -ipo ;;
4366             *)                    echo $flag ;;
4367         esac
4368     done
4369 }
4370
4371 suncc_flags(){
4372     for flag; do
4373         case $flag in
4374             -march=*|-mcpu=*)
4375                 case "${flag#*=}" in
4376                     native)                   echo -xtarget=native       ;;
4377                     v9|niagara)               echo -xarch=sparc          ;;
4378                     ultrasparc)               echo -xarch=sparcvis       ;;
4379                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4380                     i586|pentium)             echo -xchip=pentium        ;;
4381                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4382                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4383                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4384                     pentium4*)          echo -xtarget=pentium4           ;;
4385                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4386                     *-sse3)             echo -xarch=sse3                 ;;
4387                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4388                     bonnell)                   echo -xarch=ssse3         ;;
4389                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4390                     westmere)                  echo -xtarget=westmere    ;;
4391                     silvermont)                echo -xarch=sse4_2        ;;
4392                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4393                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4394                                                echo -xarch=avx           ;;
4395                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4396                     btver1)                    echo -xarch=amdsse4a      ;;
4397                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4398                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4399                     k8|opteron|athlon64|athlon-fx)
4400                                                echo -xarch=sse2a         ;;
4401                     athlon*)                   echo -xarch=pentium_proa  ;;
4402                 esac
4403                 ;;
4404             -std=c99)             echo -xc99              ;;
4405             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4406             -fPIC)                echo -KPIC -xcode=pic32 ;;
4407             -W*,*)                echo $flag              ;;
4408             -f*-*|-W*|-mimpure-text)                      ;;
4409             -shared)              echo -G                 ;;
4410             *)                    echo $flag              ;;
4411         esac
4412     done
4413 }
4414
4415 probe_cc(){
4416     pfx=$1
4417     _cc=$2
4418     first=$3
4419
4420     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4421     unset _ld_o _ldflags _ld_lib _ld_path
4422     unset _depflags _DEPCMD _DEPFLAGS
4423     _flags_filter=echo
4424
4425     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4426         true # no-op to avoid reading stdin in following checks
4427     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4428         _type=llvm_gcc
4429         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4430         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4431         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4432         _cflags_speed='-O3'
4433         _cflags_size='-Os'
4434     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4435         _type=gcc
4436         gcc_version=$($_cc --version | head -n1)
4437         gcc_basever=$($_cc -dumpversion)
4438         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4439         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4440         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4441         case $gcc_basever in
4442             2) ;;
4443             2.*) ;;
4444             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4445         esac
4446         if [ "$first" = true ]; then
4447             case $gcc_basever in
4448                 4.2*)
4449                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4450             esac
4451         fi
4452         _cflags_speed='-O3'
4453         _cflags_size='-Os'
4454     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4455         _type=icc
4456         _ident=$($_cc --version | head -n1)
4457         _depflags='-MMD'
4458         _cflags_speed='-O3'
4459         _cflags_size='-Os'
4460         _cflags_noopt='-O1'
4461         _flags_filter=icc_flags
4462     elif $_cc -v 2>&1 | grep -q xlc; then
4463         _type=xlc
4464         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4465         _cflags_speed='-O5'
4466         _cflags_size='-O5 -qcompact'
4467     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4468         test -d "$sysroot" || die "No valid sysroot specified."
4469         _type=armcc
4470         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4471         armcc_conf="$PWD/armcc.conf"
4472         $_cc --arm_linux_configure                 \
4473              --arm_linux_config_file="$armcc_conf" \
4474              --configure_sysroot="$sysroot"        \
4475              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4476              die "Error creating armcc configuration file."
4477         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4478         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4479         as_default="${cross_prefix}gcc"
4480         _depflags='-MMD'
4481         _cflags_speed='-O3'
4482         _cflags_size='-Os'
4483     elif $_cc -v 2>&1 | grep -q clang && ! $_cc -? > /dev/null 2>&1; then
4484         _type=clang
4485         _ident=$($_cc --version 2>/dev/null | head -n1)
4486         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4487         _cflags_speed='-O3'
4488         _cflags_size='-Oz'
4489     elif $_cc -V 2>&1 | grep -q Sun; then
4490         _type=suncc
4491         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4492         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4493         _DEPFLAGS='-xM1 -xc99'
4494         _ldflags='-std=c99'
4495         _cflags_speed='-O5'
4496         _cflags_size='-O5 -xspace'
4497         _flags_filter=suncc_flags
4498     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4499         _type=pathscale
4500         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4501         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4502         _cflags_speed='-O2'
4503         _cflags_size='-Os'
4504         _flags_filter='filter_out -Wdisabled-optimization'
4505     elif $_cc -v 2>&1 | grep -q Open64; then
4506         _type=open64
4507         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4508         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4509         _cflags_speed='-O2'
4510         _cflags_size='-Os'
4511         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4512     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4513         _type=armasm
4514         _ident=$($_cc | head -n1)
4515         # 4509: "This form of conditional instruction is deprecated"
4516         _flags="-nologo -ignore 4509"
4517         _flags_filter=armasm_flags
4518     elif $_cc 2>&1 | grep -q Intel; then
4519         _type=icl
4520         _ident=$($_cc 2>&1 | head -n1)
4521         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4522         # Not only is O3 broken on 13.x+ but it is slower on all previous
4523         # versions (tested) as well.
4524         _cflags_speed="-O2"
4525         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4526         if $_cc 2>&1 | grep -q Linker; then
4527             _ld_o='-out:$@'
4528         else
4529             _ld_o='-Fe$@'
4530         fi
4531         _cc_o='-Fo$@'
4532         _cc_e='-P'
4533         _flags_filter=icl_flags
4534         _ld_lib='lib%.a'
4535         _ld_path='-libpath:'
4536         # -Qdiag-error to make icl error when seeing certain unknown arguments
4537         _flags='-nologo -Qdiag-error:4044,10157'
4538         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4539         # with MSVC which enables it by default.
4540         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4541         disable stripping
4542     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4543         # lld can emulate multiple different linkers; in ms link.exe mode,
4544         # the -? parameter gives the help output which contains an identifyable
4545         # string, while it gives an error in other modes.
4546         _type=lld-link
4547         # The link.exe mode doesn't have a switch for getting the version,
4548         # but we can force it back to gnu mode and get the version from there.
4549         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4550         _ld_o='-out:$@'
4551         _flags_filter=msvc_flags
4552         _ld_lib='lib%.a'
4553         _ld_path='-libpath:'
4554     elif $_cc -nologo- 2>&1 | grep -q Microsoft || { $_cc -v 2>&1 | grep -q clang && $_cc -? > /dev/null 2>&1; }; then
4555         _type=msvc
4556         _ident=$($_cc 2>&1 | head -n1 | tr -d '\r')
4557         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4558         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4559         _cflags_speed="-O2"
4560         _cflags_size="-O1"
4561         _cflags_noopt="-O1"
4562         if $_cc -nologo- 2>&1 | grep -q Linker; then
4563             _ld_o='-out:$@'
4564         else
4565             _ld_o='-Fe$@'
4566         fi
4567         _cc_o='-Fo$@'
4568         _cc_e='-P -Fi$@'
4569         _flags_filter=msvc_flags
4570         _ld_lib='lib%.a'
4571         _ld_path='-libpath:'
4572         _flags='-nologo'
4573         disable stripping
4574     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4575         _type=cparser
4576         _ident=$($_cc --version | head -n1)
4577         _depflags='-MMD'
4578         _cflags_speed='-O4'
4579         _cflags_size='-O2'
4580         _flags_filter=cparser_flags
4581     fi
4582
4583     eval ${pfx}_type=\$_type
4584     eval ${pfx}_ident=\$_ident
4585 }
4586
4587 set_ccvars(){
4588     eval ${1}_C=\${_cc_c-\${${1}_C}}
4589     eval ${1}_E=\${_cc_e-\${${1}_E}}
4590     eval ${1}_O=\${_cc_o-\${${1}_O}}
4591
4592     if [ -n "$_depflags" ]; then
4593         eval ${1}_DEPFLAGS=\$_depflags
4594     else
4595         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4596         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4597         eval DEP${1}FLAGS=\$_flags
4598     fi
4599 }
4600
4601 probe_cc cc "$cc" "true"
4602 cflags_filter=$_flags_filter
4603 cflags_speed=$_cflags_speed
4604 cflags_size=$_cflags_size
4605 cflags_noopt=$_cflags_noopt
4606 add_cflags $_flags $_cflags
4607 cc_ldflags=$_ldflags
4608 set_ccvars CC
4609 set_ccvars CXX
4610
4611 probe_cc hostcc "$host_cc"
4612 host_cflags_filter=$_flags_filter
4613 host_cflags_speed=$_cflags_speed
4614 add_host_cflags  $_flags $_cflags
4615 set_ccvars HOSTCC
4616
4617 test -n "$cc_type" && enable $cc_type ||
4618     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4619
4620 : ${as_default:=$cc}
4621 : ${objcc_default:=$cc}
4622 : ${dep_cc_default:=$cc}
4623 : ${ld_default:=$cc}
4624 : ${host_ld_default:=$host_cc}
4625 set_default ar as objcc dep_cc ld ln_s host_ld windres
4626
4627 probe_cc as "$as"
4628 asflags_filter=$_flags_filter
4629 add_asflags $_flags $_cflags
4630 set_ccvars AS
4631
4632 probe_cc objcc "$objcc"
4633 objcflags_filter=$_flags_filter
4634 add_objcflags $_flags $_cflags
4635 set_ccvars OBJC
4636
4637 probe_cc ld "$ld"
4638 ldflags_filter=$_flags_filter
4639 add_ldflags $_flags $_ldflags
4640 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4641 LD_O=${_ld_o-$LD_O}
4642 LD_LIB=${_ld_lib-$LD_LIB}
4643 LD_PATH=${_ld_path-$LD_PATH}
4644
4645 probe_cc hostld "$host_ld"
4646 host_ldflags_filter=$_flags_filter
4647 add_host_ldflags $_flags $_ldflags
4648 HOSTLD_O=${_ld_o-$HOSTLD_O}
4649
4650 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4651     probe_cc depcc "$dep_cc"
4652     CCDEP=${_DEPCMD:-$DEPCMD}
4653     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4654     DEPCCFLAGS=$_flags
4655 fi
4656
4657 if $ar 2>&1 | grep -q Microsoft; then
4658     arflags="-nologo"
4659     ar_o='-out:$@'
4660 elif $ar 2>&1 | grep -q "\[D\] "; then
4661     arflags="rcD"
4662     ar_o='$@'
4663 else
4664     arflags="rc"
4665     ar_o='$@'
4666 fi
4667
4668 add_cflags $extra_cflags
4669 add_cxxflags $extra_cxxflags
4670 add_objcflags $extra_objcflags
4671 add_asflags $extra_cflags
4672
4673 if test -n "$sysroot"; then
4674     case "$cc_type" in
4675         gcc|llvm_gcc|clang)
4676             add_cppflags --sysroot="$sysroot"
4677             add_ldflags --sysroot="$sysroot"
4678         ;;
4679     esac
4680 fi
4681
4682 if test "$cpu" = host; then
4683     enabled cross_compile &&
4684         die "--cpu=host makes no sense when cross-compiling."
4685
4686     case "$cc_type" in
4687         gcc|llvm_gcc)
4688             check_native(){
4689                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4690                 sed -n "/cc1.*$1=/{
4691                             s/.*$1=\\([^ ]*\\).*/\\1/
4692                             p
4693                             q
4694                         }" $TMPE
4695             }
4696             cpu=$(check_native -march || check_native -mcpu)
4697         ;;
4698         clang)
4699             check_native(){
4700                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4701                 sed -n "/cc1.*-target-cpu /{
4702                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4703                             p
4704                             q
4705                         }" $TMPE
4706             }
4707             cpu=$(check_native -march)
4708         ;;
4709     esac
4710
4711     test "${cpu:-host}" = host &&
4712         die "--cpu=host not supported with compiler $cc"
4713 fi
4714
4715 # Deal with common $arch aliases
4716 case "$arch" in
4717     aarch64|arm64)
4718         arch="aarch64"
4719     ;;
4720     arm*|iPad*|iPhone*)
4721         arch="arm"
4722     ;;
4723     mips*|IP*)
4724         case "$arch" in
4725         *el)
4726             add_cppflags -EL
4727             add_ldflags -EL
4728         ;;
4729         *eb)
4730             add_cppflags -EB
4731             add_ldflags -EB
4732         ;;
4733         esac
4734         arch="mips"
4735     ;;
4736     parisc*|hppa*)
4737         arch="parisc"
4738     ;;
4739     "Power Macintosh"|ppc*|powerpc*)
4740         arch="ppc"
4741     ;;
4742     s390|s390x)
4743         arch="s390"
4744     ;;
4745     sh4|sh)
4746         arch="sh4"
4747     ;;
4748     sun4*|sparc*)
4749         arch="sparc"
4750     ;;
4751     tilegx|tile-gx)
4752         arch="tilegx"
4753     ;;
4754     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4755         arch="x86"
4756     ;;
4757 esac
4758
4759 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4760 enable $arch
4761
4762 # Add processor-specific flags
4763 if enabled aarch64; then
4764
4765     case $cpu in
4766         armv*)
4767             cpuflags="-march=$cpu"
4768         ;;
4769         *)
4770             cpuflags="-mcpu=$cpu"
4771         ;;
4772     esac
4773
4774 elif enabled alpha; then
4775
4776     cpuflags="-mcpu=$cpu"
4777
4778 elif enabled arm; then
4779
4780     check_arm_arch() {
4781         test_cpp_condition stddef.h \
4782             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4783             $cpuflags
4784     }
4785
4786     probe_arm_arch() {
4787         if   check_arm_arch 4;        then echo armv4
4788         elif check_arm_arch 4T;       then echo armv4t
4789         elif check_arm_arch 5;        then echo armv5
4790         elif check_arm_arch 5E;       then echo armv5e
4791         elif check_arm_arch 5T;       then echo armv5t
4792         elif check_arm_arch 5TE;      then echo armv5te
4793         elif check_arm_arch 5TEJ;     then echo armv5te
4794         elif check_arm_arch 6;        then echo armv6
4795         elif check_arm_arch 6J;       then echo armv6j
4796         elif check_arm_arch 6K;       then echo armv6k
4797         elif check_arm_arch 6Z;       then echo armv6z
4798         elif check_arm_arch 6KZ;      then echo armv6zk
4799         elif check_arm_arch 6ZK;      then echo armv6zk
4800         elif check_arm_arch 6T2;      then echo armv6t2
4801         elif check_arm_arch 7;        then echo armv7
4802         elif check_arm_arch 7A  7_A;  then echo armv7-a
4803         elif check_arm_arch 7S;       then echo armv7-a
4804         elif check_arm_arch 7R  7_R;  then echo armv7-r
4805         elif check_arm_arch 7M  7_M;  then echo armv7-m
4806         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4807         elif check_arm_arch 8A  8_A;  then echo armv8-a
4808         fi
4809     }
4810
4811     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4812
4813     case $cpu in
4814         armv*)
4815             cpuflags="-march=$cpu"
4816             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4817         ;;
4818         *)
4819             cpuflags="-mcpu=$cpu"
4820             case $cpu in
4821                 cortex-a*)                               subarch=armv7a  ;;
4822                 cortex-r*)                               subarch=armv7r  ;;
4823                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4824                 arm11*)                                  subarch=armv6   ;;
4825                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4826                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4827                 *)                             subarch=$(probe_arm_arch) ;;
4828             esac
4829         ;;
4830     esac
4831
4832     case "$subarch" in
4833         armv5t*)    enable fast_clz                ;;
4834         armv[6-8]*)
4835             enable fast_clz
4836             disabled fast_unaligned || enable fast_unaligned
4837             ;;
4838     esac
4839
4840 elif enabled avr32; then
4841
4842     case $cpu in
4843         ap7[02]0[0-2])
4844             subarch="avr32_ap"
4845             cpuflags="-mpart=$cpu"
4846         ;;
4847         ap)
4848             subarch="avr32_ap"
4849             cpuflags="-march=$cpu"
4850         ;;
4851         uc3[ab]*)
4852             subarch="avr32_uc"
4853             cpuflags="-mcpu=$cpu"
4854         ;;
4855         uc)
4856             subarch="avr32_uc"
4857             cpuflags="-march=$cpu"
4858         ;;
4859     esac
4860
4861 elif enabled bfin; then
4862
4863     cpuflags="-mcpu=$cpu"
4864
4865 elif enabled mips; then
4866
4867     cpuflags="-march=$cpu"
4868
4869     if [ "$cpu" != "generic" ]; then
4870         disable mips32r2
4871         disable mips32r5
4872         disable mips64r2
4873         disable mips32r6
4874         disable mips64r6
4875         disable loongson2
4876         disable loongson3
4877
4878         case $cpu in
4879             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4880                 enable mips32r2
4881                 disable msa
4882             ;;
4883             p5600|i6400|p6600)
4884                 disable mipsdsp
4885                 disable mipsdspr2
4886             ;;
4887             loongson*)
4888                 enable loongson2
4889                 enable loongson3
4890                 enable local_aligned
4891                 enable simd_align_16
4892                 enable fast_64bit
4893                 enable fast_clz
4894                 enable fast_cmov
4895                 enable fast_unaligned
4896                 disable aligned_stack
4897                 disable mipsdsp
4898                 disable mipsdspr2
4899                 # When gcc version less than 5.3.0, add -fno-expensive-optimizations flag.
4900                 if [ $cc == gcc ]; then
4901                     gcc_version=$(gcc -dumpversion)
4902                     if [ "$(echo "$gcc_version 5.3.0" | tr " " "\n" | sort -rV | head -n 1)" == "$gcc_version" ]; then
4903                         expensive_optimization_flag=""
4904                     else
4905                         expensive_optimization_flag="-fno-expensive-optimizations"
4906                     fi
4907                 fi
4908                 case $cpu in
4909                     loongson3*)
4910                         cpuflags="-march=loongson3a -mhard-float $expensive_optimization_flag"
4911                     ;;
4912                     loongson2e)
4913                         cpuflags="-march=loongson2e -mhard-float $expensive_optimization_flag"
4914                     ;;
4915                     loongson2f)
4916                         cpuflags="-march=loongson2f -mhard-float $expensive_optimization_flag"
4917                     ;;
4918                 esac
4919             ;;
4920             *)
4921                 # Unknown CPU. Disable everything.
4922                 warn "unknown CPU. Disabling all MIPS optimizations."
4923                 disable mipsfpu
4924                 disable mipsdsp
4925                 disable mipsdspr2
4926                 disable msa
4927                 disable mmi
4928             ;;
4929         esac
4930
4931         case $cpu in
4932             24kc)
4933                 disable mipsfpu
4934                 disable mipsdsp
4935                 disable mipsdspr2
4936             ;;
4937             24kf*)
4938                 disable mipsdsp
4939                 disable mipsdspr2
4940             ;;
4941             24kec|34kc|1004kc)
4942                 disable mipsfpu
4943                 disable mipsdspr2
4944             ;;
4945             24kef*|34kf*|1004kf*)
4946                 disable mipsdspr2
4947             ;;
4948             74kc)
4949                 disable mipsfpu
4950             ;;
4951             p5600)
4952                 enable mips32r5
4953                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4954             ;;
4955             i6400)
4956                 enable mips64r6
4957                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4958             ;;
4959             p6600)
4960                 enable mips64r6
4961                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4962             ;;
4963         esac
4964     else
4965         # We do not disable anything. Is up to the user to disable the unwanted features.
4966         warn 'generic cpu selected'
4967     fi
4968
4969 elif enabled ppc; then
4970
4971     disable ldbrx
4972
4973     case $(tolower $cpu) in
4974         601|ppc601|powerpc601)
4975             cpuflags="-mcpu=601"
4976             disable altivec
4977         ;;
4978         603*|ppc603*|powerpc603*)
4979             cpuflags="-mcpu=603"
4980             disable altivec
4981         ;;
4982         604*|ppc604*|powerpc604*)
4983             cpuflags="-mcpu=604"
4984             disable altivec
4985         ;;
4986         g3|75*|ppc75*|powerpc75*)
4987             cpuflags="-mcpu=750"
4988             disable altivec
4989         ;;
4990         g4|745*|ppc745*|powerpc745*)
4991             cpuflags="-mcpu=7450"
4992             disable vsx
4993         ;;
4994         74*|ppc74*|powerpc74*)
4995             cpuflags="-mcpu=7400"
4996             disable vsx
4997         ;;
4998         g5|970|ppc970|powerpc970)
4999             cpuflags="-mcpu=970"
5000             disable vsx
5001         ;;
5002         power[3-6]*)
5003             cpuflags="-mcpu=$cpu"
5004             disable vsx
5005         ;;
5006         power[7-8]*)
5007             cpuflags="-mcpu=$cpu"
5008         ;;
5009         cell)
5010             cpuflags="-mcpu=cell"
5011             enable ldbrx
5012             disable vsx
5013         ;;
5014         e500mc)
5015             cpuflags="-mcpu=e500mc"
5016             disable altivec
5017         ;;
5018         e500v2)
5019             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
5020             disable altivec
5021             disable dcbzl
5022         ;;
5023         e500)
5024             cpuflags="-mcpu=8540 -mhard-float"
5025             disable altivec
5026             disable dcbzl
5027         ;;
5028     esac
5029
5030 elif enabled sparc; then
5031
5032     case $cpu in
5033         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
5034             cpuflags="-mcpu=$cpu"
5035         ;;
5036         ultrasparc*|niagara[234])
5037             cpuflags="-mcpu=$cpu"
5038         ;;
5039     esac
5040
5041 elif enabled x86; then
5042
5043     case $cpu in
5044         i[345]86|pentium)
5045             cpuflags="-march=$cpu"
5046             disable i686
5047             disable mmx
5048         ;;
5049         # targets that do NOT support nopl and conditional mov (cmov)
5050         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
5051             cpuflags="-march=$cpu"
5052             disable i686
5053         ;;
5054         # targets that do support nopl and conditional mov (cmov)
5055         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
5056         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
5057         |amdfam10|barcelona|b[dt]ver*|znver*)
5058             cpuflags="-march=$cpu"
5059             enable i686
5060             enable fast_cmov
5061         ;;
5062         # targets that do support conditional mov but on which it's slow
5063         pentium4|pentium4m|prescott|nocona)
5064             cpuflags="-march=$cpu"
5065             enable i686
5066             disable fast_cmov
5067         ;;
5068     esac
5069
5070 fi
5071
5072 if [ "$cpu" != generic ]; then
5073     add_cflags  $cpuflags
5074     add_asflags $cpuflags
5075     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
5076 fi
5077
5078 # compiler sanity check
5079 test_exec <<EOF
5080 int main(void){ return 0; }
5081 EOF
5082 if test "$?" != 0; then
5083     echo "$cc is unable to create an executable file."
5084     if test -z "$cross_prefix" && ! enabled cross_compile ; then
5085         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
5086         echo "Only do this if you know what cross compiling means."
5087     fi
5088     die "C compiler test failed."
5089 fi
5090
5091 add_cppflags -D_ISOC99_SOURCE
5092 add_cxxflags -D__STDC_CONSTANT_MACROS
5093 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
5094
5095 # some compilers silently accept -std=c11, so we also need to check that the
5096 # version macro is defined properly
5097 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
5098     add_cflags -std=c11 ||
5099     check_cflags -std=c99
5100
5101 check_cppflags -D_FILE_OFFSET_BITS=64
5102 check_cppflags -D_LARGEFILE_SOURCE
5103
5104 add_host_cppflags -D_ISOC99_SOURCE
5105 check_host_cflags -std=c99
5106 check_host_cflags -Wall
5107 check_host_cflags $host_cflags_speed
5108
5109 check_64bit(){
5110     arch32=$1
5111     arch64=$2
5112     expr=${3:-'sizeof(void *) > 4'}
5113     test_code cc "" "int test[2*($expr) - 1]" &&
5114         subarch=$arch64 || subarch=$arch32
5115     enable $subarch
5116 }
5117
5118 case "$arch" in
5119     aarch64|alpha|ia64)
5120         enabled shared && enable_weak pic
5121     ;;
5122     mips)
5123         check_64bit mips mips64 '_MIPS_SIM > 1'
5124         enabled shared && enable_weak pic
5125     ;;
5126     parisc)
5127         check_64bit parisc parisc64
5128         enabled shared && enable_weak pic
5129     ;;
5130     ppc)
5131         check_64bit ppc ppc64
5132         enabled shared && enable_weak pic
5133     ;;
5134     s390)
5135         check_64bit s390 s390x
5136         enabled shared && enable_weak pic
5137     ;;
5138     sparc)
5139         check_64bit sparc sparc64
5140         enabled shared && enable_weak pic
5141     ;;
5142     x86)
5143         check_64bit x86_32 x86_64
5144         # Treat x32 as x64 for now. Note it also needs pic if shared
5145         test "$subarch" = "x86_32" && test_cpp_condition stddef.h 'defined(__x86_64__)' &&
5146             subarch=x86_64 && enable x86_64 && disable x86_32
5147         if enabled x86_64; then
5148             enabled shared && enable_weak pic
5149             objformat=elf64
5150         fi
5151     ;;
5152 esac
5153
5154 # OS specific
5155 case $target_os in
5156     aix)
5157         SHFLAGS=-shared
5158         add_cppflags '-I\$(SRC_PATH)/compat/aix'
5159         enabled shared && add_ldflags -Wl,-brtl
5160         arflags='-Xany -r -c'
5161         striptype=""
5162         ;;
5163     android)
5164         disable symver
5165         enable section_data_rel_ro
5166         add_cflags -fPIE
5167         add_ldexeflags -fPIE -pie
5168         SLIB_INSTALL_NAME='$(SLIBNAME)'
5169         SLIB_INSTALL_LINKS=
5170         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
5171         ;;
5172     haiku)
5173         prefix_default="/boot/common"
5174         network_extralibs="-lnetwork"
5175         host_extralibs=
5176         ;;
5177     sunos)
5178         SHFLAGS='-shared -Wl,-h,$$(@F)'
5179         enabled x86 && append SHFLAGS -mimpure-text
5180         network_extralibs="-lsocket -lnsl"
5181         add_cppflags -D__EXTENSIONS__
5182         # When using suncc to build, the Solaris linker will mark
5183         # an executable with each instruction set encountered by
5184         # the Solaris assembler.  As our libraries contain their own
5185         # guards for processor-specific code, instead suppress
5186         # generation of the HWCAPS ELF section on Solaris x86 only.
5187         enabled_all suncc x86 &&
5188             echo "hwcap_1 = OVERRIDE;" > mapfile &&
5189             add_ldflags -Wl,-M,mapfile
5190         nm_default='nm -P -g'
5191         striptype=""
5192         version_script='-M'
5193         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
5194         ;;
5195     netbsd)
5196         disable symver
5197         oss_indev_extralibs="-lossaudio"
5198         oss_outdev_extralibs="-lossaudio"
5199         enabled gcc || check_ldflags -Wl,-zmuldefs
5200         ;;
5201     openbsd|bitrig)
5202         disable symver
5203         striptype=""
5204         SHFLAGS='-shared'
5205         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
5206         SLIB_INSTALL_LINKS=
5207         oss_indev_extralibs="-lossaudio"
5208         oss_outdev_extralibs="-lossaudio"
5209         ;;
5210     dragonfly)
5211         disable symver
5212         ;;
5213     freebsd)
5214         ;;
5215     bsd/os)
5216         add_extralibs -lpoll -lgnugetopt
5217         strip="strip -d"
5218         ;;
5219     darwin)
5220         enabled ppc && add_asflags -force_cpusubtype_ALL
5221         install_name_dir_default='$(SHLIBDIR)'
5222         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
5223         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
5224         strip="${strip} -x"
5225         add_ldflags -Wl,-dynamic,-search_paths_first
5226         check_cflags -Werror=partial-availability
5227         SLIBSUF=".dylib"
5228         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
5229         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
5230         enabled x86_64 && objformat="macho64" || objformat="macho32"
5231         enabled_any pic shared x86_64 ||
5232             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
5233         check_headers dispatch/dispatch.h &&
5234             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
5235         if test -n "$sysroot"; then
5236             is_in -isysroot $cc $CPPFLAGS $CFLAGS || check_cppflags -isysroot $sysroot
5237             is_in -isysroot $ld $LDFLAGS          || check_ldflags  -isysroot $sysroot
5238         fi
5239         version_script='-exported_symbols_list'
5240         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
5241         ;;
5242     msys*)
5243         die "Native MSYS builds are discouraged, please use the MINGW environment."
5244         ;;
5245     mingw32*|mingw64*)
5246         target_os=mingw32
5247         LIBTARGET=i386
5248         if enabled x86_64; then
5249             LIBTARGET="i386:x86-64"
5250         elif enabled arm; then
5251             LIBTARGET="arm"
5252         elif enabled aarch64; then
5253             LIBTARGET="arm64"
5254         fi
5255         if enabled shared; then
5256             # Cannot build both shared and static libs when using dllimport.
5257             disable static
5258         fi
5259         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5260         enabled x86_32 && check_ldflags -Wl,--large-address-aware
5261         shlibdir_default="$bindir_default"
5262         SLIBPREF=""
5263         SLIBSUF=".dll"
5264         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5265         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5266         if test_cmd lib.exe -list; then
5267             SLIB_EXTRA_CMD=-'lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5268             if enabled x86_64; then
5269                 LIBTARGET=x64
5270             fi
5271         else
5272             SLIB_EXTRA_CMD=-'$(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
5273         fi
5274         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5275         SLIB_INSTALL_LINKS=
5276         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5277         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5278         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" AR="$(AR_CMD)" NM="$(NM_CMD)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5279         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--disable-auto-image-base $$(@:$(SLIBSUF)=.def)'
5280         enabled x86_64 && objformat="win64" || objformat="win32"
5281         dlltool="${cross_prefix}dlltool"
5282         ranlib=:
5283         enable dos_paths
5284         check_ldflags -Wl,--nxcompat,--dynamicbase
5285         # Lets work around some stupidity in binutils.
5286         # ld will strip relocations from executables even though we need them
5287         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
5288         # however ld then forgets what the entry point should be (oops) so we
5289         # have to manually (re)set it.
5290         if enabled x86_32; then
5291             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
5292         elif enabled x86_64; then
5293             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
5294             check_ldflags -Wl,--high-entropy-va # binutils 2.25
5295             # Set image base >4GB for extra entropy with HEASLR
5296             add_ldexeflags -Wl,--image-base,0x140000000
5297             append SHFLAGS -Wl,--image-base,0x180000000
5298         fi
5299         ;;
5300     win32|win64)
5301         disable symver
5302         if enabled shared; then
5303             # Link to the import library instead of the normal static library
5304             # for shared libs.
5305             LD_LIB='%.lib'
5306             # Cannot build both shared and static libs with MSVC or icl.
5307             disable static
5308         fi
5309         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
5310         shlibdir_default="$bindir_default"
5311         SLIBPREF=""
5312         SLIBSUF=".dll"
5313         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5314         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5315         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5316         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5317         SLIB_INSTALL_LINKS=
5318         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5319         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5320         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5321         enabled x86_64 && objformat="win64" || objformat="win32"
5322         ranlib=:
5323         enable dos_paths
5324         ;;
5325     cygwin*)
5326         target_os=cygwin
5327         shlibdir_default="$bindir_default"
5328         SLIBPREF="cyg"
5329         SLIBSUF=".dll"
5330         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5331         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5332         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5333         SLIB_INSTALL_LINKS=
5334         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
5335         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
5336         enabled x86_64 && objformat="win64" || objformat="win32"
5337         enable dos_paths
5338         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5339         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5340         ;;
5341     *-dos|freedos|opendos)
5342         network_extralibs="-lsocket"
5343         objformat="coff"
5344         enable dos_paths
5345         ;;
5346     linux)
5347         enable section_data_rel_ro
5348         enabled_any arm aarch64 && enable_weak linux_perf
5349         ;;
5350     irix*)
5351         target_os=irix
5352         ranlib="echo ignoring ranlib"
5353         ;;
5354     os/2*)
5355         strip="lxlite -CS"
5356         striptype=""
5357         objformat="aout"
5358         add_cppflags -D_GNU_SOURCE
5359         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
5360         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
5361         LIBSUF="_s.a"
5362         SLIBPREF=""
5363         SLIBSUF=".dll"
5364         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5365         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
5366         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
5367             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
5368             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
5369             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
5370             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
5371         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
5372             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
5373         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5374         SLIB_INSTALL_LINKS=
5375         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
5376         enable dos_paths
5377         enable_weak os2threads
5378         ;;
5379     gnu/kfreebsd)
5380         add_cppflags -D_BSD_SOURCE
5381         ;;
5382     gnu)
5383         ;;
5384     qnx)
5385         add_cppflags -D_QNX_SOURCE
5386         network_extralibs="-lsocket"
5387         ;;
5388     symbian)
5389         SLIBSUF=".dll"
5390         enable dos_paths
5391         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
5392         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
5393         add_ldflags -Wl,--target1-abs,--no-undefined \
5394                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
5395                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
5396         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
5397                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
5398                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
5399         ;;
5400     minix)
5401         ;;
5402     none)
5403         ;;
5404     *)
5405         die "Unknown OS '$target_os'."
5406         ;;
5407 esac
5408
5409 # test if creating links works
5410 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5411 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5412 mkdir "$link_dest"
5413 $ln_s "$link_dest" "$link_name"
5414 touch "$link_dest/test_file"
5415 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5416     # create link to source path
5417     [ -e src ] && rm src
5418     $ln_s "$source_path" src
5419     source_link=src
5420 else
5421     # creating directory links doesn't work
5422     # fall back to using the full source path
5423     source_link="$source_path"
5424 fi
5425 # cleanup
5426 rm -r "$link_dest"
5427 rm -r "$link_name"
5428
5429 # determine libc flavour
5430
5431 probe_libc(){
5432     pfx=$1
5433     pfx_no_=${pfx%_}
5434     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5435     if test_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5436         eval ${pfx}libc_type=uclibc
5437         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5438     elif test_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5439         eval ${pfx}libc_type=glibc
5440         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5441     # MinGW headers can be installed on Cygwin, so check for newlib first.
5442     elif test_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5443         eval ${pfx}libc_type=newlib
5444         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
5445     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5446     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5447         eval ${pfx}libc_type=mingw64
5448         if test_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5449             add_compat msvcrt/snprintf.o
5450             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5451         fi
5452         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5453         eval test \$${pfx_no_}cc_type = "gcc" &&
5454             add_${pfx}cppflags -D__printf__=__gnu_printf__
5455         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5456             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5457     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5458          test_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5459         eval ${pfx}libc_type=mingw32
5460         test_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5461             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5462             die "ERROR: MinGW32 runtime version must be >= 3.15."
5463         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5464         test_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
5465             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5466         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5467             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5468         eval test \$${pfx_no_}cc_type = "gcc" &&
5469             add_${pfx}cppflags -D__printf__=__gnu_printf__
5470     elif test_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5471         eval ${pfx}libc_type=msvcrt
5472         if test_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5473             if [ "$pfx" = host_ ]; then
5474                 add_host_cppflags -Dsnprintf=_snprintf
5475             else
5476                 add_compat strtod.o strtod=avpriv_strtod
5477                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5478                                              _snprintf=avpriv_snprintf  \
5479                                              vsnprintf=avpriv_vsnprintf
5480             fi
5481         fi
5482         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5483         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5484         # 0x601 by default unless something else is set by the user.
5485         # This can easily lead to us detecting functions only present
5486         # in such new versions and producing binaries requiring windows 7.0.
5487         # Therefore explicitly set the default to Vista unless the user has
5488         # set something else on the command line.
5489         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5490         # family. For these cases, configure is free to use any functions
5491         # found in the SDK headers by default. (Alternatively, we could force
5492         # _WIN32_WINNT to 0x0602 in that case.)
5493         test_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5494             { test_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0600; }
5495 #ifdef WINAPI_FAMILY
5496 #include <winapifamily.h>
5497 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5498 #error not desktop
5499 #endif
5500 #endif
5501 EOF
5502         if [ "$pfx" = "" ]; then
5503             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5504             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5505         fi
5506     elif test_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5507         eval ${pfx}libc_type=klibc
5508     elif test_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5509         eval ${pfx}libc_type=bionic
5510     elif test_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5511         eval ${pfx}libc_type=solaris
5512         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5513     elif test_${pfx}cpp_condition sys/version.h "defined __DJGPP__"; then
5514         eval ${pfx}libc_type=djgpp
5515         add_cppflags -U__STRICT_ANSI__
5516         add_cflags "-include $source_path/compat/djgpp/math.h"
5517         add_compat djgpp/math.o
5518     fi
5519     test_${pfx}cc <<EOF
5520 #include <time.h>
5521 void *v = localtime_r;
5522 EOF
5523 test "$?" != 0 && test_${pfx}cc -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 <<EOF && add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5524 #include <time.h>
5525 void *v = localtime_r;
5526 EOF
5527
5528     eval test -n "\${${pfx}libc_type}" && enable ${pfx}libc_${libc_type}
5529 }
5530
5531 probe_libc
5532 probe_libc host_
5533
5534 # hacks for compiler/libc/os combinations
5535
5536 case $libc_type in
5537     bionic)
5538         add_compat strtod.o strtod=avpriv_strtod
5539         ;;
5540 esac
5541
5542 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5543     add_cppflags '-I\$(SRC_PATH)/compat/float'
5544
5545 test_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5546
5547 set_default libdir
5548 : ${shlibdir_default:="$libdir"}
5549 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5550
5551 set_default $PATHS_LIST
5552 set_default nm
5553
5554 disabled optimizations || enabled ossfuzz || check_cflags -fomit-frame-pointer
5555
5556 enable_weak_pic() {
5557     disabled pic && return
5558     enable pic
5559     add_cppflags -DPIC
5560     case "$target_os" in
5561     mingw*|cygwin*|win*)
5562         ;;
5563     *)
5564         add_cflags -fPIC
5565         add_asflags -fPIC
5566         ;;
5567     esac
5568 }
5569
5570 enabled pic && enable_weak_pic
5571
5572 test_cc <<EOF || die "Symbol mangling check failed."
5573 int ff_extern;
5574 EOF
5575 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5576 extern_prefix=${sym%%ff_extern*}
5577
5578 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
5579
5580 for restrict_keyword in restrict __restrict__ __restrict ""; do
5581     test_code cc "" "char * $restrict_keyword p" && break
5582 done
5583
5584 check_cc pragma_deprecated "" '_Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"")'
5585
5586 # The global variable ensures the bits appear unchanged in the object file.
5587 test_cc <<EOF || die "endian test failed"
5588 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5589 EOF
5590 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5591
5592 check_cc const_nan math.h "struct { double d; } static const bar[] = { { NAN } }"
5593
5594 if ! enabled ppc64 || enabled bigendian; then
5595     disable vsx
5596 fi
5597
5598 check_gas() {
5599     log "check_gas using '$as' as AS"
5600     # :vararg is used on aarch64, arm and ppc altivec
5601     check_as vararg "
5602 .macro m n, y:vararg=0
5603 \n: .int \y
5604 .endm
5605 m x" || return 1
5606     # .altmacro is only used in arm asm
5607     ! enabled arm || check_as gnu_as ".altmacro"
5608 }
5609
5610 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5611     nogas=:
5612     enabled_any arm aarch64 && nogas=die
5613     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5614     as_noop=-v
5615
5616     case $as_type in
5617         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5618         gcc)  gaspp_as_type=gas ;;
5619         *)    gaspp_as_type=$as_type ;;
5620     esac
5621
5622     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5623
5624     test "${as#*gas-preprocessor.pl}" != "$as" ||
5625     test_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5626         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5627
5628     if ! check_gas ; then
5629         as=${gas:=$as}
5630         check_gas || \
5631             $nogas "GNU assembler not found, install/update gas-preprocessor"
5632     fi
5633
5634     check_as as_func ".func test
5635                       .endfunc"
5636 fi
5637
5638 check_inline_asm inline_asm_labels '"1:\n"'
5639
5640 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5641
5642 if enabled aarch64; then
5643     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5644     # internal assembler in clang 3.3 does not support this instruction
5645     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5646     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5647
5648     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5649
5650 elif enabled alpha; then
5651
5652     check_cflags -mieee
5653
5654 elif enabled arm; then
5655
5656     enabled msvc && check_cpp_condition thumb stddef.h "defined _M_ARMT"
5657     test_cpp_condition stddef.h "defined __thumb__" && test_cc <<EOF && enable_weak thumb
5658 float func(float a, float b){ return a+b; }
5659 EOF
5660     enabled thumb && check_cflags -mthumb || check_cflags -marm
5661
5662     if check_cpp_condition vfp_args stddef.h "defined __ARM_PCS_VFP"; then
5663         :
5664     elif check_cpp_condition vfp_args stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5665         :
5666     elif ! test_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5667         case "${cross_prefix:-$cc}" in
5668             *hardfloat*) enable vfp_args; fpabi=vfp ;;
5669             *) check_ld "cc" vfp_args <<EOF && fpabi=vfp || fpabi=soft ;;
5670 __asm__ (".eabi_attribute 28, 1");
5671 int main(void) { return 0; }
5672 EOF
5673         esac
5674         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5675     fi
5676
5677     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5678     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5679     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5680     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5681     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5682     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5683     enabled setend  && check_insn setend  'setend be'
5684
5685     [ $target_os = linux ] || [ $target_os = android ] ||
5686         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5687             $ARCH_EXT_LIST_ARM
5688
5689     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5690
5691     check_as as_arch_directive ".arch armv7-a"
5692     check_as as_dn_directive   "ra .dn d0.i16"
5693     check_as as_fpu_directive  ".fpu neon"
5694
5695     # llvm's integrated assembler supports .object_arch from llvm 3.5
5696     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
5697         check_as as_object_arch ".object_arch armv4"
5698
5699     # MS armasm fails to assemble our PIC constructs
5700     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5701
5702 elif enabled mips; then
5703
5704     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5705     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5706     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5707
5708     # Enable minimum ISA based on selected options
5709     if enabled mips64; then
5710         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5711         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5712         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5713     else
5714         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5715         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5716         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5717         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5718     fi
5719
5720     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5721     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5722     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_headers msa.h || disable msa
5723     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5724     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5725
5726     if enabled bigendian && enabled msa; then
5727         disable msa
5728     fi
5729
5730 elif enabled parisc; then
5731
5732     if enabled gcc; then
5733         case $($cc -dumpversion) in
5734             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5735         esac
5736     fi
5737
5738 elif enabled ppc; then
5739
5740     enable local_aligned
5741
5742     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5743     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5744     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5745     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5746
5747     if enabled altivec; then
5748         check_cflags -maltivec -mabi=altivec
5749
5750         # check if our compiler supports Motorola AltiVec C API
5751         check_cc altivec altivec.h "vector signed int v1 = (vector signed int) { 0 };
5752                                     vector signed int v2 = (vector signed int) { 1 };
5753                                     v1 = vec_add(v1, v2);"
5754
5755         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5756     fi
5757
5758     if enabled vsx; then
5759         check_cflags -mvsx &&
5760         check_cc vsx altivec.h "int v[4] = { 0 };
5761                                 vector signed int v1 = vec_vsx_ld(0, v);"
5762     fi
5763
5764     if enabled power8; then
5765         check_cpp_condition power8 "altivec.h" "defined(_ARCH_PWR8)"
5766     fi
5767
5768 elif enabled x86; then
5769
5770     check_builtin rdtsc    intrin.h   "__rdtsc()"
5771     check_builtin mm_empty mmintrin.h "_mm_empty()"
5772
5773     enable local_aligned
5774
5775     # check whether EBP is available on x86
5776     # As 'i' is stored on the stack, this program will crash
5777     # if the base pointer is used to access it because the
5778     # base pointer is cleared in the inline assembly code.
5779     check_exec_crash <<EOF && enable ebp_available
5780 volatile int i=0;
5781 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5782 return i;
5783 EOF
5784
5785     # check whether EBX is available on x86
5786     check_inline_asm ebx_available '""::"b"(0)' &&
5787         check_inline_asm ebx_available '"":::"%ebx"'
5788
5789     # check whether xmm clobbers are supported
5790     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5791
5792     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5793         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5794
5795     # check whether binutils is new enough to compile SSSE3/MMXEXT
5796     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5797     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5798
5799     probe_x86asm(){
5800         x86asmexe_probe=$1
5801         if test_cmd $x86asmexe_probe -v; then
5802             x86asmexe=$x86asmexe_probe
5803             x86asm_type=nasm
5804             x86asm_debug="-g -F dwarf"
5805             X86ASMDEP=
5806             X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
5807         elif test_cmd $x86asmexe_probe --version; then
5808             x86asmexe=$x86asmexe_probe
5809             x86asm_type=yasm
5810             x86asm_debug="-g dwarf2"
5811             X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
5812             X86ASM_DEPFLAGS=
5813         fi
5814         check_x86asm x86asm "movbe ecx, [5]"
5815     }
5816
5817     if ! disabled_any asm mmx x86asm; then
5818         disable x86asm
5819         for program in $x86asmexe nasm yasm; do
5820             probe_x86asm $program && break
5821         done
5822         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
5823         X86ASMFLAGS="-f $objformat"
5824         enabled pic               && append X86ASMFLAGS "-DPIC"
5825         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
5826         case "$objformat" in
5827             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
5828         esac
5829
5830         check_x86asm avx512_external "vmovdqa32 [eax]{k1}{z}, zmm0"
5831         check_x86asm avx2_external   "vextracti128 xmm0, ymm0, 0"
5832         check_x86asm xop_external    "vpmacsdd xmm0, xmm1, xmm2, xmm3"
5833         check_x86asm fma4_external   "vfmaddps ymm0, ymm1, ymm2, ymm3"
5834         check_x86asm cpunop          "CPU amdnop"
5835     fi
5836
5837     case "$cpu" in
5838         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5839             disable fast_clz
5840         ;;
5841     esac
5842
5843 fi
5844
5845 check_cc intrinsics_neon arm_neon.h "int16x8_t test = vdupq_n_s16(0)"
5846
5847 check_ldflags -Wl,--as-needed
5848 check_ldflags -Wl,-z,noexecstack
5849
5850 if ! disabled network; then
5851     check_func getaddrinfo $network_extralibs
5852     check_func inet_aton $network_extralibs
5853
5854     check_type netdb.h "struct addrinfo"
5855     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5856     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5857     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5858     check_type poll.h "struct pollfd"
5859     check_type netinet/sctp.h "struct sctp_event_subscribe"
5860     check_struct "sys/socket.h" "struct msghdr" msg_flags
5861     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5862     check_type netinet/in.h "struct sockaddr_in6"
5863     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5864     check_type "sys/types.h sys/socket.h" socklen_t
5865
5866     # Prefer arpa/inet.h over winsock2
5867     if check_headers arpa/inet.h ; then
5868         check_func closesocket
5869     elif check_headers winsock2.h ; then
5870         check_func_headers winsock2.h closesocket -lws2 &&
5871             network_extralibs="-lws2" ||
5872         { check_func_headers winsock2.h closesocket -lws2_32 &&
5873             network_extralibs="-lws2_32"; } || disable winsock2_h network
5874         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5875
5876         check_type ws2tcpip.h socklen_t
5877         check_type ws2tcpip.h "struct addrinfo"
5878         check_type ws2tcpip.h "struct group_source_req"
5879         check_type ws2tcpip.h "struct ip_mreq_source"
5880         check_type ws2tcpip.h "struct ipv6_mreq"
5881         check_type winsock2.h "struct pollfd"
5882         check_struct winsock2.h "struct sockaddr" sa_len
5883         check_type ws2tcpip.h "struct sockaddr_in6"
5884         check_type ws2tcpip.h "struct sockaddr_storage"
5885     else
5886         disable network
5887     fi
5888 fi
5889
5890 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5891 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5892 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5893 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5894 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5895 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5896 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5897
5898 case "$custom_allocator" in
5899     jemalloc)
5900         # jemalloc by default does not use a prefix
5901         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5902     ;;
5903     tcmalloc)
5904         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
5905         malloc_prefix=tc_
5906     ;;
5907 esac
5908
5909 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5910 check_func  ${malloc_prefix}memalign            && enable memalign
5911 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5912
5913 check_func  access
5914 check_func_headers stdlib.h arc4random
5915 check_lib   clock_gettime time.h clock_gettime || check_lib clock_gettime time.h clock_gettime -lrt
5916 check_func  fcntl
5917 check_func  fork
5918 check_func  gethrtime
5919 check_func  getopt
5920 check_func  getrusage
5921 check_func  gettimeofday
5922 check_func  isatty
5923 check_func  mkstemp
5924 check_func  mmap
5925 check_func  mprotect
5926 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5927 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
5928 check_func  sched_getaffinity
5929 check_func  setrlimit
5930 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5931 check_func  strerror_r
5932 check_func  sysconf
5933 check_func  sysctl
5934 check_func  usleep
5935
5936 check_func_headers conio.h kbhit
5937 check_func_headers io.h setmode
5938 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5939 check_func_headers mach/mach_time.h mach_absolute_time
5940 check_func_headers stdlib.h getenv
5941 check_func_headers sys/stat.h lstat
5942
5943 check_func_headers windows.h GetProcessAffinityMask
5944 check_func_headers windows.h GetProcessTimes
5945 check_func_headers windows.h GetSystemTimeAsFileTime
5946 check_func_headers windows.h LoadLibrary
5947 check_func_headers windows.h MapViewOfFile
5948 check_func_headers windows.h PeekNamedPipe
5949 check_func_headers windows.h SetConsoleTextAttribute
5950 check_func_headers windows.h SetConsoleCtrlHandler
5951 check_func_headers windows.h Sleep
5952 check_func_headers windows.h VirtualAlloc
5953 check_func_headers glob.h glob
5954 enabled xlib &&
5955     check_lib xlib "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5956
5957 check_headers direct.h
5958 check_headers dirent.h
5959 check_headers dxgidebug.h
5960 check_headers dxva.h
5961 check_headers dxva2api.h -D_WIN32_WINNT=0x0600
5962 check_headers io.h
5963 check_headers linux/perf_event.h
5964 check_headers libcrystalhd/libcrystalhd_if.h
5965 check_headers malloc.h
5966 check_headers net/udplite.h
5967 check_headers poll.h
5968 check_headers sys/param.h
5969 check_headers sys/resource.h
5970 check_headers sys/select.h
5971 check_headers sys/time.h
5972 check_headers sys/un.h
5973 check_headers termios.h
5974 check_headers unistd.h
5975 check_headers valgrind/valgrind.h
5976 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5977 check_headers windows.h
5978 check_headers X11/extensions/XvMClib.h
5979 check_headers asm/types.h
5980
5981 # it seems there are versions of clang in some distros that try to use the
5982 # gcc headers, which explodes for stdatomic
5983 # so we also check that atomics actually work here
5984 check_builtin stdatomic stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0); foo += bar"
5985
5986 check_lib advapi32 "windows.h"            RegCloseKey          -ladvapi32
5987 check_lib bcrypt   "windows.h bcrypt.h"   BCryptGenRandom      -lbcrypt &&
5988     check_cpp_condition bcrypt bcrypt.h "defined BCRYPT_RNG_ALGORITHM"
5989 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
5990 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
5991 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
5992
5993 check_lib android android/native_window.h ANativeWindow_acquire -landroid
5994 check_lib mediandk "stdint.h media/NdkImage.h" AImage_delete -lmediandk
5995 check_lib camera2ndk "stdbool.h stdint.h camera/NdkCameraManager.h" ACameraManager_create -lcamera2ndk
5996
5997 enabled appkit       && check_apple_framework AppKit
5998 enabled audiotoolbox && check_apple_framework AudioToolbox
5999 enabled avfoundation && check_apple_framework AVFoundation
6000 enabled coreimage    && check_apple_framework CoreImage
6001 enabled videotoolbox && check_apple_framework VideoToolbox
6002
6003 check_apple_framework CoreFoundation
6004 check_apple_framework CoreMedia
6005 check_apple_framework CoreVideo
6006
6007 enabled avfoundation && {
6008     disable coregraphics applicationservices
6009     check_lib coregraphics        CoreGraphics/CoreGraphics.h               CGGetActiveDisplayList "-framework CoreGraphics" ||
6010     check_lib applicationservices ApplicationServices/ApplicationServices.h CGGetActiveDisplayList "-framework ApplicationServices"; }
6011
6012 enabled videotoolbox && {
6013     check_lib coreservices CoreServices/CoreServices.h UTGetOSTypeFromString "-framework CoreServices"
6014     check_func_headers CoreMedia/CMFormatDescription.h kCMVideoCodecType_HEVC "-framework CoreMedia"
6015 }
6016
6017 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
6018
6019 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
6020 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
6021 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
6022 check_type "windows.h d3d11.h" "ID3D11VideoContext"
6023 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
6024
6025 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
6026 check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
6027 check_struct "va/va.h va/va_vpp.h" "VAProcPipelineCaps" rotation_flags
6028 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
6029 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
6030 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
6031 check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
6032
6033 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
6034
6035 if enabled cuda_sdk; then
6036     warn "Option --enable-cuda-sdk is deprecated. Use --enable-cuda-nvcc instead."
6037     enable cuda_nvcc
6038 fi
6039
6040 if ! disabled ffnvcodec; then
6041     ffnv_hdr_list="ffnvcodec/nvEncodeAPI.h ffnvcodec/dynlink_cuda.h ffnvcodec/dynlink_cuviddec.h ffnvcodec/dynlink_nvcuvid.h"
6042     check_pkg_config ffnvcodec "ffnvcodec >= 9.0.18.0" "$ffnv_hdr_list" "" || \
6043       check_pkg_config ffnvcodec "ffnvcodec >= 8.2.15.8 ffnvcodec < 8.3" "$ffnv_hdr_list" "" || \
6044       check_pkg_config ffnvcodec "ffnvcodec >= 8.1.24.9 ffnvcodec < 8.2" "$ffnv_hdr_list" "" || \
6045       check_pkg_config ffnvcodec "ffnvcodec >= 8.0.14.9 ffnvcodec < 8.1" "$ffnv_hdr_list" ""
6046 fi
6047
6048 check_cpp_condition winrt windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)"
6049
6050 if ! disabled w32threads && ! enabled pthreads; then
6051     check_func_headers "windows.h process.h" _beginthreadex &&
6052         check_type "windows.h" CONDITION_VARIABLE &&
6053         check_type "windows.h" INIT_ONCE &&
6054         enable w32threads || disable w32threads
6055     if ! enabled w32threads && enabled winrt; then
6056         check_func_headers "windows.h" CreateThread &&
6057             enable w32threads || disable w32threads
6058     fi
6059 fi
6060
6061 # check for some common methods of building with pthread support
6062 # do this before the optional library checks as some of them require pthreads
6063 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
6064     if check_lib pthreads pthread.h pthread_join   -pthread &&
6065        check_lib pthreads pthread.h pthread_create -pthread; then
6066         add_cflags -pthread
6067     elif check_lib pthreads pthread.h pthread_join   -pthreads &&
6068          check_lib pthreads pthread.h pthread_create -pthreads; then
6069         add_cflags -pthreads
6070     elif check_lib pthreads pthread.h pthread_join   -ldl -pthread &&
6071          check_lib pthreads pthread.h pthread_create -ldl -pthread; then
6072         add_cflags -ldl -pthread
6073     elif check_lib pthreads pthread.h pthread_join   -lpthreadGC2 &&
6074          check_lib pthreads pthread.h pthread_create -lpthreadGC2; then
6075         :
6076     elif check_lib pthreads pthread.h pthread_join   -lpthread &&
6077          check_lib pthreads pthread.h pthread_create -lpthread; then
6078         :
6079     elif check_func pthread_join && check_func pthread_create; then
6080         enable pthreads
6081     fi
6082     check_cc pthreads "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER"
6083
6084     if enabled pthreads; then
6085         check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
6086         check_func pthread_cancel $pthreads_extralibs
6087     fi
6088 fi
6089
6090 enabled  zlib && { check_pkg_config zlib zlib "zlib.h" zlibVersion ||
6091                    check_lib zlib   zlib.h      zlibVersion    -lz; }
6092 enabled bzlib && check_lib bzlib bzlib.h BZ2_bzlibVersion    -lbz2
6093 enabled  lzma && check_lib lzma   lzma.h lzma_version_number -llzma
6094
6095 # On some systems dynamic loading requires no extra linker flags
6096 check_lib libdl dlfcn.h "dlopen dlsym" || check_lib libdl dlfcn.h "dlopen dlsym" -ldl
6097
6098 check_lib libm math.h sin -lm
6099
6100 atan2f_args=2
6101 copysign_args=2
6102 hypot_args=2
6103 ldexpf_args=2
6104 powf_args=2
6105
6106 for func in $MATH_FUNCS; do
6107     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
6108 done
6109
6110 for func in $COMPLEX_FUNCS; do
6111     eval check_complexfunc $func \${${func}_args:-1}
6112 done
6113
6114 # these are off by default, so fail if requested and not available
6115 enabled cuda_nvcc         && { check_nvcc || die "ERROR: failed checking for nvcc."; }
6116 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
6117 enabled decklink          && { require_headers DeckLinkAPI.h &&
6118                                { test_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a090500" || die "ERROR: Decklink API version must be >= 10.9.5."; } }
6119 enabled frei0r            && require_headers "frei0r.h dlfcn.h"
6120 enabled gmp               && require gmp gmp.h mpz_export -lgmp
6121 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init
6122 enabled jni               && { [ $target_os = "android" ] && check_headers jni.h && enabled pthreads || die "ERROR: jni not found"; }
6123 enabled ladspa            && require_headers "ladspa.h dlfcn.h"
6124 enabled libaom            && require_pkg_config libaom "aom >= 1.0.0" aom/aom_codec.h aom_codec_version
6125 enabled libaribb24        && { check_pkg_config libaribb24 "aribb24 > 1.0.3" "aribb24/aribb24.h" arib_instance_new ||
6126                                { enabled gpl && require_pkg_config libaribb24 aribb24 "aribb24/aribb24.h" arib_instance_new; } ||
6127                                die "ERROR: libaribb24 requires version higher than 1.0.3 or --enable-gpl."; }
6128 enabled lv2               && require_pkg_config lv2 lilv-0 "lilv/lilv.h" lilv_world_new
6129 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
6130 enabled libass            && require_pkg_config libass libass ass/ass.h ass_library_init
6131 enabled libbluray         && require_pkg_config libbluray libbluray libbluray/bluray.h bd_open
6132 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
6133 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
6134                              { check_lib libcelt celt/celt.h celt_decoder_create_custom -lcelt0 ||
6135                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
6136 enabled libcaca           && require_pkg_config libcaca caca caca.h caca_create_canvas
6137 enabled libcodec2         && require libcodec2 codec2/codec2.h codec2_create -lcodec2
6138 enabled libdav1d          && require_pkg_config libdav1d "dav1d >= 0.2.1" "dav1d/dav1d.h" dav1d_version
6139 enabled libdavs2          && require_pkg_config libdavs2 "davs2 >= 1.6.0" davs2.h davs2_decoder_open
6140 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
6141 enabled libdrm            && require_pkg_config libdrm libdrm xf86drm.h drmGetVersion
6142 enabled libfdk_aac        && { check_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
6143                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
6144                                  warn "using libfdk without pkg-config"; } }
6145 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"
6146 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_extralibs
6147 enabled fontconfig        && enable libfontconfig
6148 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
6149 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
6150 enabled libfribidi        && require_pkg_config libfribidi fribidi fribidi.h fribidi_version_info
6151 enabled libgme            && { check_pkg_config libgme libgme gme/gme.h gme_new_emu ||
6152                                require libgme gme/gme.h gme_new_emu -lgme -lstdc++; }
6153 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
6154                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
6155                                done || die "ERROR: libgsm not found"; }
6156 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc $pthreads_extralibs
6157 enabled libklvanc         && require libklvanc libklvanc/vanc.h klvanc_context_create -lklvanc
6158 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
6159 enabled liblensfun        && require_pkg_config liblensfun lensfun lensfun.h lf_db_new
6160 # While it may appear that require is being used as a pkg-config
6161 # fallback for libmfx, it is actually being used to detect a different
6162 # installation route altogether.  If libmfx is installed via the Intel
6163 # Media SDK or Intel Media Server Studio, these don't come with
6164 # pkg-config support.  Instead, users should make sure that the build
6165 # can find the libraries and headers through other means.
6166 enabled libmfx            && { check_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit ||
6167                                { require libmfx "mfx/mfxvideo.h" MFXInit "-llibmfx $advapi32_extralibs" && warn "using libmfx without pkg-config"; } }
6168 enabled libmodplug        && require_pkg_config libmodplug libmodplug libmodplug/modplug.h ModPlug_Load
6169 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame $libm_extralibs
6170 enabled libmysofa         && { check_pkg_config libmysofa libmysofa mysofa.h mysofa_load ||
6171                                require libmysofa mysofa.h mysofa_load -lmysofa $zlib_extralibs; }
6172 enabled libnpp            && { check_lib libnpp npp.h nppGetLibVersion -lnppig -lnppicc -lnppc -lnppidei ||
6173                                check_lib libnpp npp.h nppGetLibVersion -lnppi -lnppc -lnppidei ||
6174                                die "ERROR: libnpp not found"; }
6175 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
6176 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
6177 enabled libopencv         && { check_headers opencv2/core/core_c.h &&
6178                                { check_pkg_config libopencv opencv opencv2/core/core_c.h cvCreateImageHeader ||
6179                                  require libopencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
6180                                require_pkg_config libopencv opencv opencv/cxcore.h cvCreateImageHeader; }
6181 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
6182 enabled libopenjpeg       && { check_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version ||
6183                                { require_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } }
6184 enabled libopenmpt        && require_pkg_config libopenmpt "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create -lstdc++ && append libopenmpt_extralibs "-lstdc++"
6185 enabled libopus           && {
6186     enabled libopus_decoder && {
6187         require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
6188     }
6189     enabled libopus_encoder && {
6190         require_pkg_config libopus opus opus_multistream.h opus_multistream_surround_encoder_create
6191     }
6192 }
6193 enabled libpulse          && require_pkg_config libpulse libpulse pulse/pulseaudio.h pa_context_new
6194 enabled librsvg           && require_pkg_config librsvg librsvg-2.0 librsvg-2.0/librsvg/rsvg.h rsvg_handle_render_cairo
6195 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
6196 enabled librubberband     && require_pkg_config librubberband "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new -lstdc++ && append librubberband_extralibs "-lstdc++"
6197 enabled libshine          && require_pkg_config libshine shine shine/layer3.h shine_encode_buffer
6198 enabled libsmbclient      && { check_pkg_config libsmbclient smbclient libsmbclient.h smbc_init ||
6199                                require libsmbclient libsmbclient.h smbc_init -lsmbclient; }
6200 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy -lstdc++
6201 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
6202 enabled libssh            && require_pkg_config libssh libssh libssh/sftp.h sftp_init
6203 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init
6204 enabled libsrt            && require_pkg_config libsrt "srt >= 1.3.0" srt/srt.h srt_socket
6205 enabled libtensorflow     && require libtensorflow tensorflow/c/c_api.h TF_Version -ltensorflow
6206 enabled libtesseract      && require_pkg_config libtesseract tesseract tesseract/capi.h TessBaseAPICreate
6207 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
6208 enabled libtls            && require_pkg_config libtls libtls tls.h tls_configure
6209 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
6210                              { check_lib libtwolame twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
6211                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
6212 enabled libv4l2           && require_pkg_config libv4l2 libv4l2 libv4l2.h v4l2_ioctl
6213 enabled libvidstab        && require_pkg_config libvidstab "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
6214 enabled libvmaf           && require_pkg_config libvmaf "libvmaf >= 1.3.9" libvmaf.h compute_vmaf
6215 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
6216 enabled libvorbis         && require_pkg_config libvorbis vorbis vorbis/codec.h vorbis_info_init &&
6217                              require_pkg_config libvorbisenc vorbisenc vorbis/vorbisenc.h vorbis_encode_init
6218
6219 enabled libvpx            && {
6220     enabled libvpx_vp8_decoder && {
6221         check_pkg_config libvpx_vp8_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
6222             check_lib libvpx_vp8_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp8_dx VPX_IMG_FMT_HIGHBITDEPTH" "-lvpx $libm_extralibs $pthreads_extralibs"
6223     }
6224     enabled libvpx_vp8_encoder && {
6225         check_pkg_config libvpx_vp8_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
6226             check_lib libvpx_vp8_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp8_cx VPX_IMG_FMT_HIGHBITDEPTH" "-lvpx $libm_extralibs $pthreads_extralibs"
6227     }
6228     enabled libvpx_vp9_decoder && {
6229         check_pkg_config libvpx_vp9_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
6230             check_lib libvpx_vp9_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx VPX_IMG_FMT_HIGHBITDEPTH" "-lvpx $libm_extralibs $pthreads_extralibs"
6231     }
6232     enabled libvpx_vp9_encoder && {
6233         check_pkg_config libvpx_vp9_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
6234             check_lib libvpx_vp9_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VPX_IMG_FMT_HIGHBITDEPTH" "-lvpx $libm_extralibs $pthreads_extralibs"
6235     }
6236     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
6237         die "libvpx enabled but no supported decoders found"
6238     fi
6239 }
6240
6241 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
6242 enabled libwebp           && {
6243     enabled libwebp_encoder      && require_pkg_config libwebp "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
6244     enabled libwebp_anim_encoder && check_pkg_config libwebp_anim_encoder "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit; }
6245 enabled libx264           && { check_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode ||
6246                                { require libx264 "stdint.h x264.h" x264_encoder_encode "-lx264 $pthreads_extralibs $libm_extralibs" &&
6247                                  warn "using libx264 without pkg-config"; } } &&
6248                              require_cpp_condition libx264 x264.h "X264_BUILD >= 118" &&
6249                              check_cpp_condition libx262 x264.h "X264_MPEG2"
6250 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
6251                              require_cpp_condition libx265 x265.h "X265_BUILD >= 68"
6252 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode "-lxavs $pthreads_extralibs $libm_extralibs"
6253 enabled libxavs2          && require_pkg_config libxavs2 "xavs2 >= 1.3.0" "stdint.h xavs2.h" xavs2_api_get
6254 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
6255 enabled libzimg           && require_pkg_config libzimg "zimg >= 2.7.0" zimg.h zimg_get_api_version
6256 enabled libzmq            && require_pkg_config libzmq libzmq zmq.h zmq_ctx_new
6257 enabled libzvbi           && require_pkg_config libzvbi zvbi-0.2 libzvbi.h vbi_decoder_new &&
6258                              { test_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
6259                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
6260 enabled libxml2           && require_pkg_config libxml2 libxml-2.0 libxml2/libxml/xmlversion.h xmlCheckVersion
6261 enabled mbedtls           && { check_pkg_config mbedtls mbedtls mbedtls/x509_crt.h mbedtls_x509_crt_init ||
6262                                check_pkg_config mbedtls mbedtls mbedtls/ssl.h mbedtls_ssl_init ||
6263                                check_lib mbedtls mbedtls/ssl.h mbedtls_ssl_init -lmbedtls -lmbedx509 -lmbedcrypto ||
6264                                die "ERROR: mbedTLS not found"; }
6265 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
6266 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
6267                                { ! enabled cross_compile &&
6268                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
6269                                  add_ldflags -L/opt/vc/lib/ &&
6270                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
6271                                die "ERROR: mmal not found" &&
6272                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
6273 enabled openal            && { { for al_extralibs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
6274                                check_lib openal 'AL/al.h' alGetError "${al_extralibs}" && break; done } ||
6275                                die "ERROR: openal not found"; } &&
6276                              { test_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
6277                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
6278 enabled opencl            && { check_pkg_config opencl OpenCL CL/cl.h clEnqueueNDRangeKernel ||
6279                                check_lib opencl OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
6280                                check_lib opencl CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
6281                                die "ERROR: opencl not found"; } &&
6282                              { test_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
6283                                test_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
6284                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
6285 enabled opengl            && { check_lib opengl GL/glx.h glXGetProcAddress "-lGL" ||
6286                                check_lib opengl windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
6287                                check_lib opengl OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
6288                                check_lib opengl ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
6289                                die "ERROR: opengl not found."
6290                              }
6291 enabled omx               && require_headers OMX_Core.h
6292 enabled omx_rpi           && { check_headers OMX_Core.h ||
6293                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_headers OMX_Core.h ; } ||
6294                                die "ERROR: OpenMAX IL headers not found"; } && enable omx
6295 enabled openssl           && { check_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
6296                                check_pkg_config openssl openssl openssl/ssl.h SSL_library_init ||
6297                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
6298                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
6299                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
6300                                die "ERROR: openssl not found"; }
6301 enabled rkmpp             && { require_pkg_config rkmpp rockchip_mpp  rockchip/rk_mpi.h mpp_create &&
6302                                require_pkg_config rockchip_mpp "rockchip_mpp >= 1.3.7" rockchip/rk_mpi.h mpp_create &&
6303                                { enabled libdrm ||
6304                                  die "ERROR: rkmpp requires --enable-libdrm"; }
6305                              }
6306 enabled vapoursynth       && require_pkg_config vapoursynth "vapoursynth-script >= 42" VSScript.h vsscript_init
6307
6308
6309 if enabled gcrypt; then
6310     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
6311     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
6312         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
6313         gcrypt_extralibs=$("${GCRYPT_CONFIG}" --libs)
6314         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_extralibs ||
6315             die "ERROR: gcrypt not found"
6316         add_cflags $gcrypt_cflags
6317     else
6318         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
6319     fi
6320 fi
6321
6322 if enabled sdl2; then
6323     SDL2_CONFIG="${cross_prefix}sdl2-config"
6324     test_pkg_config sdl2 "sdl2 >= 2.0.1 sdl2 < 2.1.0" SDL_events.h SDL_PollEvent
6325     if disabled sdl2 && "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
6326         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
6327         sdl2_extralibs=$("${SDL2_CONFIG}" --libs)
6328         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
6329         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
6330         check_func_headers SDL_events.h SDL_PollEvent $sdl2_extralibs $sdl2_cflags &&
6331             enable sdl2
6332     fi
6333     if test $target_os = "mingw32"; then
6334         sdl2_extralibs=$(filter_out '-mwindows' $sdl2_extralibs)
6335     fi
6336 fi
6337
6338 if enabled decklink; then
6339     case $target_os in
6340         mingw32*|mingw64*|win32|win64)
6341             decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
6342             decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
6343             ;;
6344     esac
6345 fi
6346
6347 enabled securetransport &&
6348     check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
6349     check_lib securetransport "Security/SecureTransport.h Security/Security.h" "SSLCreateContext" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" ||
6350         disable securetransport
6351
6352 enabled securetransport &&
6353     check_func SecItemImport "-Wl,-framework,CoreFoundation -Wl,-framework,Security"
6354
6355 enabled schannel &&
6356     check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
6357     test_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" &&
6358     schannel_extralibs="-lsecur32" ||
6359         disable schannel
6360
6361 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
6362 enabled makeinfo \
6363     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
6364     && enable makeinfo_html || disable makeinfo_html
6365 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
6366 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
6367 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
6368 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
6369
6370 # check V4L2 codecs available in the API
6371 check_headers linux/fb.h
6372 check_headers linux/videodev2.h
6373 test_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6374 check_cc v4l2_m2m linux/videodev2.h "int i = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_VIDEO_M2M | V4L2_BUF_FLAG_LAST;"
6375 check_cc vc1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VC1_ANNEX_G;"
6376 check_cc mpeg1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG1;"
6377 check_cc mpeg2_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG2;"
6378 check_cc mpeg4_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG4;"
6379 check_cc hevc_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_HEVC;"
6380 check_cc h263_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H263;"
6381 check_cc h264_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H264;"
6382 check_cc vp8_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP8;"
6383 check_cc vp9_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP9;"
6384
6385 check_headers sys/videoio.h
6386 test_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6387
6388 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
6389 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
6390 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
6391 # w32api 3.12 had it defined wrong
6392 check_cpp_condition vfwcap_defines vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER"
6393
6394 check_type "dshow.h" IBaseFilter
6395
6396 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
6397 check_headers "dev/bktr/ioctl_meteor.h dev/bktr/ioctl_bt848.h"                   ||
6398     check_headers "machine/ioctl_meteor.h machine/ioctl_bt848.h"                 ||
6399     check_headers "dev/video/meteor/ioctl_meteor.h dev/video/bktr/ioctl_bt848.h" ||
6400     check_headers "dev/ic/bt8xx.h"
6401
6402 if check_struct sys/soundcard.h audio_buf_info bytes; then
6403     enable_sanitized sys/soundcard.h
6404 else
6405     test_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_sanitized sys/soundcard.h
6406     #include <sys/soundcard.h>
6407     audio_buf_info abc;
6408 EOF
6409 fi
6410
6411 enabled alsa && check_pkg_config alsa alsa "alsa/asoundlib.h" snd_pcm_htimestamp ||
6412     check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound
6413
6414 enabled libjack &&
6415     require_pkg_config libjack jack jack/jack.h jack_port_get_latency_range
6416
6417 enabled sndio && check_lib sndio sndio.h sio_open -lsndio
6418
6419 if enabled libcdio; then
6420     check_pkg_config libcdio libcdio_paranoia "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open ||
6421     check_pkg_config libcdio libcdio_paranoia "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open ||
6422     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6423     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6424     die "ERROR: No usable libcdio/cdparanoia found"
6425 fi
6426
6427 enabled libxcb && check_pkg_config libxcb "xcb >= 1.4" xcb/xcb.h xcb_connect ||
6428     disable libxcb_shm libxcb_shape libxcb_xfixes
6429
6430 if enabled libxcb; then
6431     enabled libxcb_shm    && check_pkg_config libxcb_shm    xcb-shm    xcb/shm.h    xcb_shm_attach
6432     enabled libxcb_shape  && check_pkg_config libxcb_shape  xcb-shape  xcb/shape.h  xcb_shape_get_rectangles
6433     enabled libxcb_xfixes && check_pkg_config libxcb_xfixes xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image
6434 fi
6435
6436 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6437
6438 # d3d11va requires linking directly to dxgi and d3d11 if not building for
6439 # the desktop api partition
6440 test_cpp <<EOF && enable uwp && d3d11va_extralibs="-ldxgi -ld3d11"
6441 #ifdef WINAPI_FAMILY
6442 #include <winapifamily.h>
6443 #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
6444 #error desktop, not uwp
6445 #else
6446 // WINAPI_FAMILY_APP, WINAPI_FAMILY_PHONE_APP => UWP
6447 #endif
6448 #else
6449 #error no family set
6450 #endif
6451 EOF
6452
6453 enabled vaapi &&
6454     check_pkg_config vaapi "libva >= 0.35.0" "va/va.h" vaInitialize
6455
6456 if enabled vaapi; then
6457     check_pkg_config vaapi_drm "libva-drm" "va/va_drm.h" vaGetDisplayDRM
6458
6459     if enabled xlib; then
6460         check_pkg_config vaapi_x11 "libva-x11" "va/va_x11.h" vaGetDisplay
6461     fi
6462
6463     check_cpp_condition vaapi_1 "va/va.h" "VA_CHECK_VERSION(1, 0, 0)"
6464 fi
6465
6466 if enabled_all opencl libdrm ; then
6467     check_type "CL/cl_intel.h" "clCreateImageFromFdINTEL_fn" &&
6468         enable opencl_drm_beignet
6469     check_func_headers "CL/cl_ext.h" clImportMemoryARM &&
6470         enable opencl_drm_arm
6471 fi
6472
6473 if enabled_all opencl vaapi ; then
6474     enabled opencl_drm_beignet && enable opencl_vaapi_beignet
6475     check_type "CL/cl.h CL/va_ext.h" "clCreateFromVA_APIMediaSurfaceINTEL_fn" &&
6476         enable opencl_vaapi_intel_media
6477 fi
6478
6479 if enabled_all opencl dxva2 ; then
6480     check_type "CL/cl_dx9_media_sharing.h" cl_dx9_surface_info_khr &&
6481         enable opencl_dxva2
6482 fi
6483
6484 if enabled_all opencl d3d11va ; then
6485     check_type "CL/cl_d3d11.h" clGetDeviceIDsFromD3D11KHR_fn &&
6486         enable opencl_d3d11
6487 fi
6488
6489 enabled vdpau &&
6490     check_cpp_condition vdpau vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP"
6491
6492 enabled vdpau &&
6493     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
6494
6495 enabled crystalhd && check_lib crystalhd "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd
6496
6497 if enabled x86; then
6498     case $target_os in
6499         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6500             ;;
6501         *)
6502             disable ffnvcodec cuvid nvdec nvenc
6503             ;;
6504     esac
6505 else
6506     disable ffnvcodec cuvid nvdec nvenc
6507 fi
6508
6509 enabled ffnvcodec && enable cuda
6510
6511 enabled nvenc &&
6512     test_cc -I$source_path <<EOF || disable nvenc
6513 #include <ffnvcodec/nvEncodeAPI.h>
6514 NV_ENCODE_API_FUNCTION_LIST flist;
6515 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6516 int main(void) { return 0; }
6517 EOF
6518
6519 enabled amf &&
6520     check_cpp_condition amf "AMF/core/Version.h" \
6521         "(AMF_VERSION_MAJOR << 48 | AMF_VERSION_MINOR << 32 | AMF_VERSION_RELEASE << 16 | AMF_VERSION_BUILD_NUM) >= 0x0001000400040001"
6522
6523 # Funny iconv installations are not unusual, so check it after all flags have been set
6524 if enabled libc_iconv; then
6525     check_func_headers iconv.h iconv
6526 elif enabled iconv; then
6527     check_func_headers iconv.h iconv || check_lib iconv iconv.h iconv -liconv
6528 fi
6529
6530 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6531
6532 # add some useful compiler flags if supported
6533 check_cflags -Wdeclaration-after-statement
6534 check_cflags -Wall
6535 check_cflags -Wdisabled-optimization
6536 check_cflags -Wpointer-arith
6537 check_cflags -Wredundant-decls
6538 check_cflags -Wwrite-strings
6539 check_cflags -Wtype-limits
6540 check_cflags -Wundef
6541 check_cflags -Wmissing-prototypes
6542 check_cflags -Wno-pointer-to-int-cast
6543 check_cflags -Wstrict-prototypes
6544 check_cflags -Wempty-body
6545
6546 if enabled extra_warnings; then
6547     check_cflags -Wcast-qual
6548     check_cflags -Wextra
6549     check_cflags -Wpedantic
6550 fi
6551
6552 check_disable_warning(){
6553     warning_flag=-W${1#-Wno-}
6554     test_cflags $unknown_warning_flags $warning_flag && add_cflags $1
6555 }
6556
6557 test_cflags -Werror=unused-command-line-argument &&
6558     append unknown_warning_flags "-Werror=unused-command-line-argument"
6559 test_cflags -Werror=unknown-warning-option &&
6560     append unknown_warning_flags "-Werror=unknown-warning-option"
6561
6562 check_disable_warning -Wno-parentheses
6563 check_disable_warning -Wno-switch
6564 check_disable_warning -Wno-format-zero-length
6565 check_disable_warning -Wno-pointer-sign
6566 check_disable_warning -Wno-unused-const-variable
6567 check_disable_warning -Wno-bool-operation
6568 check_disable_warning -Wno-char-subscripts
6569
6570 check_disable_warning_headers(){
6571     warning_flag=-W${1#-Wno-}
6572     test_cflags $warning_flag && add_cflags_headers $1
6573 }
6574
6575 check_disable_warning_headers -Wno-deprecated-declarations
6576 check_disable_warning_headers -Wno-unused-variable
6577
6578 test_cc <<EOF && enable blocks_extension
6579 void (^block)(void);
6580 EOF
6581
6582 # add some linker flags
6583 check_ldflags -Wl,--warn-common
6584 check_ldflags -Wl,-rpath-link=:libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6585 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir && add_ldsoflags -Wl,-rpath,$libdir
6586 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6587
6588 # add some strip flags
6589 check_stripflags -x
6590
6591 enabled neon_clobber_test &&
6592     check_ldflags -Wl,--wrap,avcodec_open2              \
6593                   -Wl,--wrap,avcodec_decode_audio4      \
6594                   -Wl,--wrap,avcodec_decode_video2      \
6595                   -Wl,--wrap,avcodec_decode_subtitle2   \
6596                   -Wl,--wrap,avcodec_encode_audio2      \
6597                   -Wl,--wrap,avcodec_encode_video2      \
6598                   -Wl,--wrap,avcodec_encode_subtitle    \
6599                   -Wl,--wrap,avcodec_send_packet        \
6600                   -Wl,--wrap,avcodec_receive_packet     \
6601                   -Wl,--wrap,avcodec_send_frame         \
6602                   -Wl,--wrap,avcodec_receive_frame      \
6603                   -Wl,--wrap,swr_convert                \
6604                   -Wl,--wrap,avresample_convert ||
6605     disable neon_clobber_test
6606
6607 enabled xmm_clobber_test &&
6608     check_ldflags -Wl,--wrap,avcodec_open2              \
6609                   -Wl,--wrap,avcodec_decode_audio4      \
6610                   -Wl,--wrap,avcodec_decode_video2      \
6611                   -Wl,--wrap,avcodec_decode_subtitle2   \
6612                   -Wl,--wrap,avcodec_encode_audio2      \
6613                   -Wl,--wrap,avcodec_encode_video2      \
6614                   -Wl,--wrap,avcodec_encode_subtitle    \
6615                   -Wl,--wrap,avcodec_send_packet        \
6616                   -Wl,--wrap,avcodec_receive_packet     \
6617                   -Wl,--wrap,avcodec_send_frame         \
6618                   -Wl,--wrap,avcodec_receive_frame      \
6619                   -Wl,--wrap,swr_convert                \
6620                   -Wl,--wrap,avresample_convert         \
6621                   -Wl,--wrap,sws_scale ||
6622     disable xmm_clobber_test
6623
6624 check_ld "cc" proper_dce <<EOF
6625 extern const int array[512];
6626 static inline int func(void) { return array[0]; }
6627 int main(void) { return 0; }
6628 EOF
6629
6630 if enabled proper_dce; then
6631     echo "X { local: *; };" > $TMPV
6632     if test_ldflags -Wl,${version_script},$TMPV; then
6633         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6634         quotes='""'
6635         test_cc <<EOF && enable symver_asm_label
6636 void ff_foo(void) __asm__ ("av_foo@VERSION");
6637 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6638 EOF
6639         test_cc <<EOF && enable symver_gnu_asm
6640 __asm__(".symver ff_foo,av_foo@VERSION");
6641 void ff_foo(void) {}
6642 EOF
6643     fi
6644 fi
6645
6646 if [ -z "$optflags" ]; then
6647     if enabled small; then
6648         optflags=$cflags_size
6649     elif enabled optimizations; then
6650         optflags=$cflags_speed
6651     else
6652         optflags=$cflags_noopt
6653     fi
6654 fi
6655
6656 if [ -z "$nvccflags" ]; then
6657     nvccflags=$nvccflags_default
6658 fi
6659
6660 if enabled x86_64 || enabled ppc64 || enabled aarch64; then
6661     nvccflags="$nvccflags -m64"
6662 else
6663     nvccflags="$nvccflags -m32"
6664 fi
6665
6666 check_optflags(){
6667     check_cflags "$@"
6668     enabled lto && check_ldflags "$@"
6669 }
6670
6671 check_optflags $optflags
6672 check_optflags -fno-math-errno
6673 check_optflags -fno-signed-zeros
6674
6675 if enabled lto; then
6676     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6677     check_cflags  -flto
6678     check_ldflags -flto $cpuflags
6679     disable inline_asm_direct_symbol_refs
6680 fi
6681
6682 enabled ftrapv && check_cflags -ftrapv
6683
6684 test_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6685 int x;
6686 EOF
6687
6688
6689 if enabled icc; then
6690     # Just warnings, no remarks
6691     check_cflags -w1
6692     # -wd: Disable following warnings
6693     # 144, 167, 556: -Wno-pointer-sign
6694     # 188: enumerated type mixed with another type
6695     # 1292: attribute "foo" ignored
6696     # 1419: external declaration in primary source file
6697     # 10006: ignoring unknown option -fno-signed-zeros
6698     # 10148: ignoring unknown option -Wno-parentheses
6699     # 10156: ignoring option '-W'; no argument required
6700     # 13200: No EMMS instruction before call to function
6701     # 13203: No EMMS instruction before return from function
6702     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6703     # 11030: Warning unknown option --as-needed
6704     # 10156: ignoring option '-export'; no argument required
6705     check_ldflags -wd10156,11030
6706     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6707     enable ebp_available
6708     # The test above does not test linking
6709     enabled lto && disable symver_asm_label
6710     if enabled x86_32; then
6711         icc_version=$($cc -dumpversion)
6712         test ${icc_version%%.*} -ge 11 &&
6713             check_cflags -falign-stack=maintain-16-byte ||
6714             disable aligned_stack
6715     fi
6716 elif enabled gcc; then
6717     check_optflags -fno-tree-vectorize
6718     check_cflags -Werror=format-security
6719     check_cflags -Werror=implicit-function-declaration
6720     check_cflags -Werror=missing-prototypes
6721     check_cflags -Werror=return-type
6722     check_cflags -Werror=vla
6723     check_cflags -Wformat
6724     check_cflags -fdiagnostics-color=auto
6725     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6726     if enabled x86_32; then
6727         case $target_os in
6728         *bsd*)
6729             # BSDs don't guarantee a 16 byte aligned stack, but we can
6730             # request GCC to try to maintain 16 byte alignment throughout
6731             # function calls. Library entry points that might call assembly
6732             # functions align the stack. (The parameter means 2^4 bytes.)
6733             check_cflags -mpreferred-stack-boundary=4
6734             ;;
6735         esac
6736     fi
6737 elif enabled llvm_gcc; then
6738     check_cflags -mllvm -stack-alignment=16
6739 elif enabled clang; then
6740     if enabled x86_32; then
6741         # Clang doesn't support maintaining alignment without assuming the
6742         # same alignment in every function. If 16 byte alignment would be
6743         # enabled, one would also have to either add attribute_align_arg on
6744         # every single entry point into the libraries or enable -mstackrealign
6745         # (doing stack realignment in every single function).
6746         case $target_os in
6747         mingw32|win32|*bsd*)
6748             disable aligned_stack
6749             ;;
6750         *)
6751             check_cflags -mllvm -stack-alignment=16
6752             check_cflags -mstack-alignment=16
6753             ;;
6754         esac
6755     else
6756         check_cflags -mllvm -stack-alignment=16
6757         check_cflags -mstack-alignment=16
6758     fi
6759     check_cflags -Qunused-arguments
6760     check_cflags -Werror=implicit-function-declaration
6761     check_cflags -Werror=missing-prototypes
6762     check_cflags -Werror=return-type
6763 elif enabled cparser; then
6764     add_cflags -Wno-missing-variable-declarations
6765     add_cflags -Wno-empty-statement
6766 elif enabled armcc; then
6767     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6768     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6769     # 2523: use of inline assembly is deprecated
6770     add_cflags -W${armcc_opt},--diag_suppress=2523
6771     add_cflags -W${armcc_opt},--diag_suppress=1207
6772     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6773     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6774     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6775     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6776 elif enabled pathscale; then
6777     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6778     disable inline_asm
6779 elif enabled_any msvc icl; then
6780     enabled x86_32 && disable aligned_stack
6781     enabled_all x86_32 debug && add_cflags -Oy-
6782     enabled debug && add_ldflags -debug
6783     enable pragma_deprecated
6784     if enabled icl; then
6785         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6786         # (correctly) on icl 13.x.
6787         test_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6788             add_cflags -Qansi-alias
6789         # Some inline asm is not compilable in debug
6790         if enabled debug; then
6791             disable ebp_available
6792             disable ebx_available
6793         fi
6794     fi
6795     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6796     check_cpp_condition log2 crtversion.h "_VC_CRT_MAJOR_VERSION >= 12"
6797     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6798     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6799     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6800     # MSVC 2013 and newer can handle it fine.
6801     # If this declspec fails, force including stdlib.h before the restrict redefinition
6802     # happens in config.h.
6803     if [ $restrict_keyword != restrict ]; then
6804         test_cc <<EOF || add_cflags -FIstdlib.h
6805 __declspec($restrict_keyword) void *foo(int);
6806 EOF
6807     fi
6808     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6809     # Issue has been fixed in MSVC v19.00.24218.
6810     test_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6811         check_cflags -d2SSAOptimizer-
6812     # enable utf-8 source processing on VS2015 U2 and newer
6813     test_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6814         add_cflags -utf-8
6815 fi
6816
6817 for pfx in "" host_; do
6818     varname=${pfx%_}cc_type
6819     eval "type=\$$varname"
6820     if [ "$type" = "msvc" ]; then
6821         test_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6822 static inline int foo(int a) { return a; }
6823 EOF
6824     fi
6825 done
6826
6827 case $as_type in
6828     clang)
6829         add_asflags -Qunused-arguments
6830     ;;
6831 esac
6832
6833 case $ld_type in
6834     clang)
6835         check_ldflags -Qunused-arguments
6836     ;;
6837 esac
6838
6839 enable frame_thread_encoder
6840
6841 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6842
6843 check_deps $CONFIG_LIST       \
6844            $CONFIG_EXTRA      \
6845            $HAVE_LIST         \
6846            $ALL_COMPONENTS    \
6847
6848 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"
6849 enabled avresample && warn "Building with deprecated library libavresample"
6850
6851 case $target_os in
6852 haiku)
6853     disable memalign
6854     disable posix_memalign
6855     ;;
6856 *-dos|freedos|opendos)
6857     if test_cpp_condition sys/version.h "defined(__DJGPP__) && __DJGPP__ == 2 && __DJGPP_MINOR__ == 5"; then
6858         disable memalign
6859     fi
6860     ;;
6861 esac
6862
6863 flatten_extralibs(){
6864     nested_entries=
6865     list_name=$1
6866     eval list=\$${1}
6867     for entry in $list; do
6868         entry_copy=$entry
6869         resolve entry_copy
6870         flat_entries=
6871         for e in $entry_copy; do
6872             case $e in
6873                 *_extralibs) nested_entries="$nested_entries$e ";;
6874                           *) flat_entries="$flat_entries$e ";;
6875             esac
6876         done
6877         eval $entry="\$flat_entries"
6878     done
6879     append $list_name "$nested_entries"
6880
6881     resolve nested_entries
6882     if test -n "$(filter '*_extralibs' $nested_entries)"; then
6883         flatten_extralibs $list_name
6884     fi
6885 }
6886
6887 flatten_extralibs_wrapper(){
6888     list_name=$1
6889     flatten_extralibs $list_name
6890     unique $list_name
6891     resolve $list_name
6892     eval $list_name=\$\(\$ldflags_filter \$$list_name\)
6893     eval printf \''%s'\' \""\$$list_name"\"
6894 }
6895
6896 for linkunit in $LIBRARY_LIST; do
6897     unset current_extralibs
6898     eval components=\$$(toupper ${linkunit})_COMPONENTS_LIST
6899     for comp in ${components}; do
6900         enabled $comp || continue
6901         comp_extralibs="${comp}_extralibs"
6902         append current_extralibs $comp_extralibs
6903     done
6904     eval prepend ${linkunit}_extralibs $current_extralibs
6905 done
6906
6907 for linkunit in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
6908     eval ${linkunit}_extralibs=\$\(flatten_extralibs_wrapper ${linkunit}_extralibs\)
6909 done
6910
6911 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6912
6913 for thread in $THREADS_LIST; do
6914     if enabled $thread; then
6915         test -n "$thread_type" &&
6916             die "ERROR: Only one thread type must be selected." ||
6917             thread_type="$thread"
6918     fi
6919 done
6920
6921 if disabled stdatomic; then
6922     if enabled atomics_gcc; then
6923         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
6924     elif enabled atomics_win32; then
6925         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
6926     elif enabled atomics_suncc; then
6927         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
6928     elif enabled pthreads; then
6929         add_compat atomics/pthread/stdatomic.o
6930         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
6931     else
6932         enabled threads && die "Threading is enabled, but no atomics are available"
6933         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
6934     fi
6935 fi
6936
6937 # Check if requested libraries were found.
6938 for lib in $AUTODETECT_LIBS; do
6939     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
6940 done
6941
6942 enabled zlib && add_cppflags -DZLIB_CONST
6943
6944 # conditional library dependencies, in any order
6945 enabled afftdn_filter       && prepend avfilter_deps "avcodec"
6946 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6947 enabled afir_filter         && prepend avfilter_deps "avcodec"
6948 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6949 enabled aresample_filter    && prepend avfilter_deps "swresample"
6950 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6951 enabled bm3d_filter         && prepend avfilter_deps "avcodec"
6952 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6953 enabled convolve_filter     && prepend avfilter_deps "avcodec"
6954 enabled deconvolve_filter   && prepend avfilter_deps "avcodec"
6955 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6956 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6957 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6958 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6959 enabled firequalizer_filter && prepend avfilter_deps "avcodec"
6960 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6961 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6962 enabled pan_filter          && prepend avfilter_deps "swresample"
6963 enabled pp_filter           && prepend avfilter_deps "postproc"
6964 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6965 enabled resample_filter && prepend avfilter_deps "avresample"
6966 enabled sab_filter          && prepend avfilter_deps "swscale"
6967 enabled scale_filter    && prepend avfilter_deps "swscale"
6968 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6969 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6970 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6971 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6972 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6973 enabled signature_filter    && prepend avfilter_deps "avcodec avformat"
6974 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6975 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6976 enabled spp_filter          && prepend avfilter_deps "avcodec"
6977 enabled sr_filter           && prepend avfilter_deps "avformat swscale"
6978 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6979 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6980 enabled zoompan_filter      && prepend avfilter_deps "swscale"
6981
6982 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6983
6984 #FIXME
6985 enabled_any sdl2_outdev opengl_outdev && enabled sdl2 &&
6986     add_cflags $(filter_out '-Dmain=SDL_main' $sdl2_cflags)
6987
6988 enabled opus_decoder    && prepend avcodec_deps "swresample"
6989
6990 # reorder the items at var $1 to align with the items order at var $2 .
6991 # die if an item at $1 is not at $2 .
6992 reorder_by(){
6993     eval rb_in=\$$1
6994     eval rb_ordered=\$$2
6995
6996     for rb in $rb_in; do
6997         is_in $rb $rb_ordered || die "$rb at \$$1 is not at \$$2"
6998     done
6999
7000     rb_out=
7001     for rb in $rb_ordered; do
7002         is_in $rb $rb_in && rb_out="$rb_out$rb "
7003     done
7004     eval $1=\$rb_out
7005 }
7006
7007 # deps-expand fflib $1:  N x {append all expanded deps; unique}
7008 # within a set of N items, N expansions are enough to expose a cycle.
7009 expand_deps(){
7010     unique ${1}_deps  # required for the early break test.
7011     for dummy in $LIBRARY_LIST; do  # N iteratios
7012         eval deps=\$${1}_deps
7013         append ${1}_deps $(map 'eval echo \$${v}_deps' $deps)
7014         unique ${1}_deps
7015         eval '[ ${#deps} = ${#'${1}_deps'} ]' && break  # doesn't expand anymore
7016     done
7017
7018     eval is_in $1 \$${1}_deps && die "Dependency cycle at ${1}_deps"
7019     reorder_by ${1}_deps LIBRARY_LIST  # linking order is expected later
7020 }
7021
7022 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
7023 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
7024
7025 map 'expand_deps $v' $LIBRARY_LIST
7026
7027 if test "$quiet" != "yes"; then
7028
7029 echo "install prefix            $prefix"
7030 echo "source path               $source_path"
7031 echo "C compiler                $cc"
7032 echo "C library                 $libc_type"
7033 if test "$host_cc" != "$cc"; then
7034     echo "host C compiler           $host_cc"
7035     echo "host C library            $host_libc_type"
7036 fi
7037 echo "ARCH                      $arch ($cpu)"
7038 if test "$build_suffix" != ""; then
7039     echo "build suffix              $build_suffix"
7040 fi
7041 if test "$progs_suffix" != ""; then
7042     echo "progs suffix              $progs_suffix"
7043 fi
7044 if test "$extra_version" != ""; then
7045     echo "version string suffix     $extra_version"
7046 fi
7047 echo "big-endian                ${bigendian-no}"
7048 echo "runtime cpu detection     ${runtime_cpudetect-no}"
7049 if enabled x86; then
7050     echo "standalone assembly       ${x86asm-no}"
7051     echo "x86 assembler             ${x86asmexe}"
7052     echo "MMX enabled               ${mmx-no}"
7053     echo "MMXEXT enabled            ${mmxext-no}"
7054     echo "3DNow! enabled            ${amd3dnow-no}"
7055     echo "3DNow! extended enabled   ${amd3dnowext-no}"
7056     echo "SSE enabled               ${sse-no}"
7057     echo "SSSE3 enabled             ${ssse3-no}"
7058     echo "AESNI enabled             ${aesni-no}"
7059     echo "AVX enabled               ${avx-no}"
7060     echo "AVX2 enabled              ${avx2-no}"
7061     echo "AVX-512 enabled           ${avx512-no}"
7062     echo "XOP enabled               ${xop-no}"
7063     echo "FMA3 enabled              ${fma3-no}"
7064     echo "FMA4 enabled              ${fma4-no}"
7065     echo "i686 features enabled     ${i686-no}"
7066     echo "CMOV is fast              ${fast_cmov-no}"
7067     echo "EBX available             ${ebx_available-no}"
7068     echo "EBP available             ${ebp_available-no}"
7069 fi
7070 if enabled aarch64; then
7071     echo "NEON enabled              ${neon-no}"
7072     echo "VFP enabled               ${vfp-no}"
7073 fi
7074 if enabled arm; then
7075     echo "ARMv5TE enabled           ${armv5te-no}"
7076     echo "ARMv6 enabled             ${armv6-no}"
7077     echo "ARMv6T2 enabled           ${armv6t2-no}"
7078     echo "VFP enabled               ${vfp-no}"
7079     echo "NEON enabled              ${neon-no}"
7080     echo "THUMB enabled             ${thumb-no}"
7081 fi
7082 if enabled mips; then
7083     echo "MIPS FPU enabled          ${mipsfpu-no}"
7084     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
7085     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
7086     echo "MIPS MSA enabled          ${msa-no}"
7087     echo "LOONGSON MMI enabled      ${mmi-no}"
7088 fi
7089 if enabled ppc; then
7090     echo "AltiVec enabled           ${altivec-no}"
7091     echo "VSX enabled               ${vsx-no}"
7092     echo "POWER8 enabled            ${power8-no}"
7093     echo "PPC 4xx optimizations     ${ppc4xx-no}"
7094     echo "dcbzl available           ${dcbzl-no}"
7095 fi
7096 echo "debug symbols             ${debug-no}"
7097 echo "strip symbols             ${stripping-no}"
7098 echo "optimize for size         ${small-no}"
7099 echo "optimizations             ${optimizations-no}"
7100 echo "static                    ${static-no}"
7101 echo "shared                    ${shared-no}"
7102 echo "postprocessing support    ${postproc-no}"
7103 echo "network support           ${network-no}"
7104 echo "threading support         ${thread_type-no}"
7105 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
7106 echo "texi2html enabled         ${texi2html-no}"
7107 echo "perl enabled              ${perl-no}"
7108 echo "pod2man enabled           ${pod2man-no}"
7109 echo "makeinfo enabled          ${makeinfo-no}"
7110 echo "makeinfo supports HTML    ${makeinfo_html-no}"
7111 test -n "$random_seed" &&
7112     echo "random seed               ${random_seed}"
7113 echo
7114
7115 echo "External libraries:"
7116 print_enabled '' $EXTERNAL_LIBRARY_LIST $EXTERNAL_AUTODETECT_LIBRARY_LIST | print_in_columns
7117 echo
7118
7119 echo "External libraries providing hardware acceleration:"
7120 print_enabled '' $HWACCEL_LIBRARY_LIST $HWACCEL_AUTODETECT_LIBRARY_LIST | print_in_columns
7121 echo
7122
7123 echo "Libraries:"
7124 print_enabled '' $LIBRARY_LIST | print_in_columns
7125 echo
7126
7127 echo "Programs:"
7128 print_enabled '' $PROGRAM_LIST | print_in_columns
7129 echo
7130
7131 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
7132     echo "Enabled ${type}s:"
7133     eval list=\$$(toupper $type)_LIST
7134     print_enabled '_*' $list | print_in_columns
7135     echo
7136 done
7137
7138 if test -n "$ignore_tests"; then
7139     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
7140     echo "Ignored FATE tests:"
7141     echo $ignore_tests | print_in_columns
7142     echo
7143 fi
7144
7145 echo "License: $license"
7146
7147 fi # test "$quiet" != "yes"
7148
7149 if test -n "$WARN_IF_GETS_DISABLED_LIST"; then
7150     for cfg in $WARN_IF_GETS_DISABLED_LIST; do
7151         if disabled $cfg; then
7152             varname=${cfg}_disable_reason
7153             eval "warn \"Disabled $cfg because \$$varname\""
7154         fi
7155     done
7156 fi
7157
7158 if test -n "$WARNINGS"; then
7159     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
7160     enabled fatal_warnings && exit 1
7161 fi
7162
7163 test -e Makefile || echo "include $source_path/Makefile" > Makefile
7164
7165 esc(){
7166     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
7167 }
7168
7169 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" > ffbuild/config.fate
7170
7171 enabled stripping || strip="echo skipping strip"
7172 enabled stripping || striptype=""
7173
7174 config_files="$TMPH ffbuild/config.mak doc/config.texi"
7175
7176 cat > ffbuild/config.mak <<EOF
7177 # Automatically generated by configure - do not modify!
7178 ifndef FFMPEG_CONFIG_MAK
7179 FFMPEG_CONFIG_MAK=1
7180 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
7181 prefix=$prefix
7182 LIBDIR=\$(DESTDIR)$libdir
7183 SHLIBDIR=\$(DESTDIR)$shlibdir
7184 INCDIR=\$(DESTDIR)$incdir
7185 BINDIR=\$(DESTDIR)$bindir
7186 DATADIR=\$(DESTDIR)$datadir
7187 DOCDIR=\$(DESTDIR)$docdir
7188 MANDIR=\$(DESTDIR)$mandir
7189 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
7190 INSTALL_NAME_DIR=$install_name_dir
7191 SRC_PATH=$source_path
7192 SRC_LINK=$source_link
7193 ifndef MAIN_MAKEFILE
7194 SRC_PATH:=\$(SRC_PATH:.%=..%)
7195 endif
7196 CC_IDENT=$cc_ident
7197 ARCH=$arch
7198 INTRINSICS=$intrinsics
7199 EXTERN_PREFIX=$extern_prefix
7200 CC=$cc
7201 CXX=$cxx
7202 AS=$as
7203 OBJCC=$objcc
7204 LD=$ld
7205 DEPCC=$dep_cc
7206 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
7207 DEPAS=$as
7208 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
7209 X86ASM=$x86asmexe
7210 DEPX86ASM=$x86asmexe
7211 DEPX86ASMFLAGS=\$(X86ASMFLAGS)
7212 AR=$ar
7213 ARFLAGS=$arflags
7214 AR_O=$ar_o
7215 AR_CMD=$ar
7216 NM_CMD=$nm
7217 RANLIB=$ranlib
7218 STRIP=$strip
7219 STRIPTYPE=$striptype
7220 NVCC=$nvcc
7221 CP=cp -p
7222 LN_S=$ln_s
7223 CPPFLAGS=$CPPFLAGS
7224 CFLAGS=$CFLAGS
7225 CXXFLAGS=$CXXFLAGS
7226 OBJCFLAGS=$OBJCFLAGS
7227 ASFLAGS=$ASFLAGS
7228 NVCCFLAGS=$nvccflags
7229 AS_C=$AS_C
7230 AS_O=$AS_O
7231 OBJCC_C=$OBJCC_C
7232 OBJCC_E=$OBJCC_E
7233 OBJCC_O=$OBJCC_O
7234 CC_C=$CC_C
7235 CC_E=$CC_E
7236 CC_O=$CC_O
7237 CXX_C=$CXX_C
7238 CXX_O=$CXX_O
7239 NVCC_C=$NVCC_C
7240 NVCC_O=$NVCC_O
7241 LD_O=$LD_O
7242 X86ASM_O=$X86ASM_O
7243 LD_LIB=$LD_LIB
7244 LD_PATH=$LD_PATH
7245 DLLTOOL=$dlltool
7246 WINDRES=$windres
7247 DEPWINDRES=$dep_cc
7248 DOXYGEN=$doxygen
7249 LDFLAGS=$LDFLAGS
7250 LDEXEFLAGS=$LDEXEFLAGS
7251 LDSOFLAGS=$LDSOFLAGS
7252 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
7253 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
7254 X86ASMFLAGS=$X86ASMFLAGS
7255 BUILDSUF=$build_suffix
7256 PROGSSUF=$progs_suffix
7257 FULLNAME=$FULLNAME
7258 LIBPREF=$LIBPREF
7259 LIBSUF=$LIBSUF
7260 LIBNAME=$LIBNAME
7261 SLIBPREF=$SLIBPREF
7262 SLIBSUF=$SLIBSUF
7263 EXESUF=$EXESUF
7264 EXTRA_VERSION=$extra_version
7265 CCDEP=$CCDEP
7266 CXXDEP=$CXXDEP
7267 CCDEP_FLAGS=$CCDEP_FLAGS
7268 ASDEP=$ASDEP
7269 ASDEP_FLAGS=$ASDEP_FLAGS
7270 X86ASMDEP=$X86ASMDEP
7271 X86ASMDEP_FLAGS=$X86ASMDEP_FLAGS
7272 CC_DEPFLAGS=$CC_DEPFLAGS
7273 AS_DEPFLAGS=$AS_DEPFLAGS
7274 X86ASM_DEPFLAGS=$X86ASM_DEPFLAGS
7275 HOSTCC=$host_cc
7276 HOSTLD=$host_ld
7277 HOSTCFLAGS=$host_cflags
7278 HOSTCPPFLAGS=$host_cppflags
7279 HOSTEXESUF=$HOSTEXESUF
7280 HOSTLDFLAGS=$host_ldflags
7281 HOSTEXTRALIBS=$host_extralibs
7282 DEPHOSTCC=$host_cc
7283 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
7284 HOSTCCDEP=$HOSTCCDEP
7285 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
7286 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
7287 HOSTCC_C=$HOSTCC_C
7288 HOSTCC_O=$HOSTCC_O
7289 HOSTLD_O=$HOSTLD_O
7290 TARGET_EXEC=$target_exec $target_exec_args
7291 TARGET_PATH=$target_path
7292 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
7293 CFLAGS-ffplay=${sdl2_cflags}
7294 CFLAGS_HEADERS=$CFLAGS_HEADERS
7295 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
7296 EXTRALIBS=$extralibs
7297 COMPAT_OBJS=$compat_objs
7298 INSTALL=$install
7299 LIBTARGET=${LIBTARGET}
7300 SLIBNAME=${SLIBNAME}
7301 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
7302 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
7303 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
7304 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
7305 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
7306 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
7307 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
7308 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
7309 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
7310 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
7311 NOREDZONE_FLAGS=$noredzone_flags
7312 LIBFUZZER_PATH=$libfuzzer_path
7313 IGNORE_TESTS=$ignore_tests
7314 EOF
7315
7316 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> ffbuild/config.mak' $LIBRARY_LIST
7317
7318 for entry in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
7319     eval echo "EXTRALIBS-${entry}=\$${entry}_extralibs" >> ffbuild/config.mak
7320 done
7321
7322 cat > $TMPH <<EOF
7323 /* Automatically generated by configure - do not modify! */
7324 #ifndef FFMPEG_CONFIG_H
7325 #define FFMPEG_CONFIG_H
7326 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
7327 #define FFMPEG_LICENSE "$(c_escape $license)"
7328 #define CONFIG_THIS_YEAR 2019
7329 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
7330 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
7331 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
7332 #define av_restrict $restrict_keyword
7333 #define EXTERN_PREFIX "${extern_prefix}"
7334 #define EXTERN_ASM ${extern_prefix}
7335 #define BUILDSUF "$build_suffix"
7336 #define SLIBSUF "$SLIBSUF"
7337 #define HAVE_MMX2 HAVE_MMXEXT
7338 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
7339 EOF
7340
7341 test -n "$assert_level" &&
7342     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
7343
7344 test -n "$malloc_prefix" &&
7345     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
7346
7347 if enabled x86asm; then
7348     append config_files $TMPASM
7349     cat > $TMPASM <<EOF
7350 ; Automatically generated by configure - do not modify!
7351 EOF
7352 fi
7353
7354 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
7355
7356
7357 mkdir -p doc
7358 mkdir -p tests
7359 mkdir -p tests/api
7360 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
7361
7362 print_config ARCH_   "$config_files" $ARCH_LIST
7363 print_config HAVE_   "$config_files" $HAVE_LIST
7364 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
7365                                      $CONFIG_EXTRA      \
7366                                      $ALL_COMPONENTS    \
7367
7368 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
7369 echo "endif # FFMPEG_CONFIG_MAK" >> ffbuild/config.mak
7370
7371 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
7372 cp_if_changed $TMPH config.h
7373 touch ffbuild/.config
7374
7375 enabled x86asm && cp_if_changed $TMPASM config.asm
7376
7377 cat > $TMPH <<EOF
7378 /* Generated by ffmpeg configure */
7379 #ifndef AVUTIL_AVCONFIG_H
7380 #define AVUTIL_AVCONFIG_H
7381 EOF
7382
7383 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
7384
7385 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
7386
7387 cp_if_changed $TMPH libavutil/avconfig.h
7388
7389 # full_filter_name_foo=vf_foo
7390 # full_filter_name_bar=asrc_bar
7391 # ...
7392 eval "$(sed -n "s/^extern AVFilter ff_\([avfsinkrc]\{2,5\}\)_\(.*\);/full_filter_name_\2=\1_\2/p" $source_path/libavfilter/allfilters.c)"
7393
7394 # generate the lists of enabled components
7395 print_enabled_components(){
7396     file=$1
7397     struct_name=$2
7398     name=$3
7399     shift 3
7400     echo "static const $struct_name * const $name[] = {" > $TMPH
7401     for c in $*; do
7402         if enabled $c; then
7403             case $name in
7404                 filter_list)
7405                     eval c=\$full_filter_name_${c%_filter}
7406                 ;;
7407                 indev_list)
7408                     c=${c%_indev}_demuxer
7409                 ;;
7410                 outdev_list)
7411                     c=${c%_outdev}_muxer
7412                 ;;
7413             esac
7414             printf "    &ff_%s,\n" $c >> $TMPH
7415         fi
7416     done
7417     if [ "$name" = "filter_list" ]; then
7418         for c in asrc_abuffer vsrc_buffer asink_abuffer vsink_buffer; do
7419             printf "    &ff_%s,\n" $c >> $TMPH
7420         done
7421     fi
7422     echo "    NULL };" >> $TMPH
7423     cp_if_changed $TMPH $file
7424 }
7425
7426 print_enabled_components libavfilter/filter_list.c AVFilter filter_list $FILTER_LIST
7427 print_enabled_components libavcodec/codec_list.c AVCodec codec_list $CODEC_LIST
7428 print_enabled_components libavcodec/parser_list.c AVCodecParser parser_list $PARSER_LIST
7429 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
7430 print_enabled_components libavformat/demuxer_list.c AVInputFormat demuxer_list $DEMUXER_LIST
7431 print_enabled_components libavformat/muxer_list.c AVOutputFormat muxer_list $MUXER_LIST
7432 print_enabled_components libavdevice/indev_list.c AVInputFormat indev_list $INDEV_LIST
7433 print_enabled_components libavdevice/outdev_list.c AVOutputFormat outdev_list $OUTDEV_LIST
7434 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
7435
7436 # Settings for pkg-config files
7437
7438 cat > $TMPH <<EOF
7439 # Automatically generated by configure - do not modify!
7440 shared=$shared
7441 build_suffix=$build_suffix
7442 prefix=$prefix
7443 libdir=$libdir
7444 incdir=$incdir
7445 rpath=$(enabled rpath && echo "-Wl,-rpath,\${libdir}")
7446 source_path=${source_path}
7447 LIBPREF=${LIBPREF}
7448 LIBSUF=${LIBSUF}
7449 extralibs_avutil="$avutil_extralibs"
7450 extralibs_avcodec="$avcodec_extralibs"
7451 extralibs_avformat="$avformat_extralibs"
7452 extralibs_avdevice="$avdevice_extralibs"
7453 extralibs_avfilter="$avfilter_extralibs"
7454 extralibs_avresample="$avresample_extralibs"
7455 extralibs_postproc="$postproc_extralibs"
7456 extralibs_swscale="$swscale_extralibs"
7457 extralibs_swresample="$swresample_extralibs"
7458 EOF
7459
7460 for lib in $LIBRARY_LIST; do
7461     lib_deps="$(eval echo \$${lib}_deps)"
7462     echo ${lib}_deps=\"$lib_deps\" >> $TMPH
7463 done
7464
7465 cp_if_changed $TMPH ffbuild/config.sh