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 or libtls is not used [no]
 217   --disable-iconv          disable iconv [autodetect]
 218   --enable-jni             enable JNI support [no]
 219   --enable-ladspa          enable LADSPA audio filtering [no]
 220   --enable-libaom          enable AV1 video encoding/decoding via libaom [no]
 221   --enable-libass          enable libass subtitles rendering,
 222                            needed for subtitles and ass filter [no]
 223   --enable-libbluray       enable BluRay reading using libbluray [no]
 224   --enable-libbs2b         enable bs2b DSP library [no]
 225   --enable-libcaca         enable textual display using libcaca [no]
 226   --enable-libcelt         enable CELT decoding via libcelt [no]
 227   --enable-libcdio         enable audio CD grabbing with libcdio [no]
 228   --enable-libcodec2       enable codec2 en/decoding using libcodec2 [no]
 229   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 230                            and libraw1394 [no]
 231   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
 232   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
 233   --enable-libfontconfig   enable libfontconfig, useful for drawtext filter [no]
 234   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
 235   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
 236   --enable-libgme          enable Game Music Emu via libgme [no]
 237   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 238   --enable-libiec61883     enable iec61883 via libiec61883 [no]
 239   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 240   --enable-libjack         enable JACK audio sound server [no]
 241   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
 242   --enable-libmodplug      enable ModPlug via libmodplug [no]
 243   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 244   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 245   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 246   --enable-libopencv       enable video filtering via libopencv [no]
 247   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
 248   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 249   --enable-libopenmpt      enable decoding tracked files via libopenmpt [no]
 250   --enable-libopus         enable Opus de/encoding via libopus [no]
 251   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 252   --enable-librsvg         enable SVG rasterization via librsvg [no]
 253   --enable-librubberband   enable rubberband needed for rubberband filter [no]
 254   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 255   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 256   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
 257   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
 258   --enable-libsoxr         enable Include libsoxr resampling [no]
 259   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 260   --enable-libsrt          enable Haivision SRT protocol via libsrt [no]
 261   --enable-libssh          enable SFTP protocol via libssh [no]
 262   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
 263   --enable-libtheora       enable Theora encoding via libtheora [no]
 264   --enable-libtls          enable LibreSSL (via libtls), needed for https support
 265                            if openssl or gnutls is not used [no]
 266   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 267   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 268   --enable-libvidstab      enable video stabilization using vid.stab [no]
 269   --enable-libvmaf         enable vmaf filter via libvmaf [no]
 270   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 271   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 272                            native implementation exists [no]
 273   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 274   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 275   --enable-libwebp         enable WebP encoding via libwebp [no]
 276   --enable-libx264         enable H.264 encoding via x264 [no]
 277   --enable-libx265         enable HEVC encoding via x265 [no]
 278   --enable-libxavs         enable AVS encoding via xavs [no]
 279   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
 280   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
 281   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
 282   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
 283   --enable-libxvid         enable Xvid encoding via xvidcore,
 284                            native MPEG-4/Xvid encoder exists [no]
 285   --enable-libxml2         enable XML parsing using the C library libxml2, needed
 286                            for dash demuxing support [no]
 287   --enable-libzimg         enable z.lib, needed for zscale filter [no]
 288   --enable-libzmq          enable message passing via libzmq [no]
 289   --enable-libzvbi         enable teletext support via libzvbi [no]
 290   --enable-lv2             enable LV2 audio filtering [no]
 291   --disable-lzma           disable lzma [autodetect]
 292   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
 293   --enable-libndi_newtek   enable Newteck NDI I/O support [no]
 294   --enable-mediacodec      enable Android MediaCodec support [no]
 295   --enable-libmysofa       enable libmysofa, needed for sofalizer filter [no]
 296   --enable-openal          enable OpenAL 1.1 capture support [no]
 297   --enable-opencl          enable OpenCL processing [no]
 298   --enable-opengl          enable OpenGL rendering [no]
 299   --enable-openssl         enable openssl, needed for https support
 300                            if gnutls or libtls is not used [no]
 301   --disable-sndio          disable sndio support [autodetect]
 302   --disable-schannel       disable SChannel SSP, needed for TLS support on
 303                            Windows if openssl and gnutls are not used [autodetect]
 304   --disable-sdl2           disable sdl2 [autodetect]
 305   --disable-securetransport disable Secure Transport, needed for TLS support
 306                            on OSX if openssl and gnutls are not used [autodetect]
 307   --enable-vapoursynth     enable VapourSynth demuxer [no]
 308   --disable-xlib           disable xlib [autodetect]
 309   --disable-zlib           disable zlib [autodetect]
 310
 311   The following libraries provide various hardware acceleration features:
 312   --disable-amf            disable AMF video encoding code [autodetect]
 313   --disable-audiotoolbox   disable Apple AudioToolbox code [autodetect]
 314   --enable-cuda-sdk        enable CUDA features that require the CUDA SDK [no]
 315   --disable-cuvid          disable Nvidia CUVID support [autodetect]
 316   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
 317   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
 318   --disable-ffnvcodec      disable dynamically linked Nvidia code [autodetect]
 319   --enable-libdrm          enable DRM code (Linux) [no]
 320   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
 321   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
 322   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
 323   --disable-nvdec          disable Nvidia video decoding acceleration (via hwaccel) [autodetect]
 324   --disable-nvenc          disable Nvidia video encoding code [autodetect]
 325   --enable-omx             enable OpenMAX IL code [no]
 326   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
 327   --enable-rkmpp           enable Rockchip Media Process Platform code [no]
 328   --disable-v4l2-m2m       disable V4L2 mem2mem code [autodetect]
 329   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
 330   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
 331   --disable-videotoolbox   disable VideoToolbox code [autodetect]
 332
 333 Toolchain options:
 334   --arch=ARCH              select architecture [$arch]
 335   --cpu=CPU                select the minimum required CPU (affects
 336                            instruction selection, may crash on older CPUs)
 337   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 338   --progs-suffix=SUFFIX    program name suffix []
 339   --enable-cross-compile   assume a cross-compiler is used
 340   --sysroot=PATH           root of cross-build tree
 341   --sysinclude=PATH        location of cross-build system headers
 342   --target-os=OS           compiler targets OS [$target_os]
 343   --target-exec=CMD        command to run executables on target
 344   --target-path=DIR        path to view of build directory on target
 345   --target-samples=DIR     path to samples directory on target
 346   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 347   --toolchain=NAME         set tool defaults according to NAME
 348                            (gcc-asan, clang-asan, gcc-msan, clang-msan,
 349                            gcc-tsan, clang-tsan, gcc-usan, clang-usan,
 350                            valgrind-massif, valgrind-memcheck,
 351                            msvc, icl, gcov, llvm-cov, hardened)
 352   --nm=NM                  use nm tool NM [$nm_default]
 353   --ar=AR                  use archive tool AR [$ar_default]
 354   --as=AS                  use assembler AS [$as_default]
 355   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
 356   --strip=STRIP            use strip tool STRIP [$strip_default]
 357   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 358   --x86asmexe=EXE          use nasm-compatible assembler EXE [$x86asmexe_default]
 359   --cc=CC                  use C compiler CC [$cc_default]
 360   --cxx=CXX                use C compiler CXX [$cxx_default]
 361   --objcc=OCC              use ObjC compiler OCC [$cc_default]
 362   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 363   --nvcc=NVCC              use Nvidia CUDA compiler NVCC [$nvcc_default]
 364   --ld=LD                  use linker LD [$ld_default]
 365   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 366   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 367   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 368   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
 369   --host-cc=HOSTCC         use host C compiler HOSTCC
 370   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 371   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 372   --host-ld=HOSTLD         use host linker HOSTLD
 373   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 374   --host-libs=HLIBS        use libs HLIBS when linking for host
 375   --host-os=OS             compiler host OS [$target_os]
 376   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 377   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 378   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
 379   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 380   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 381   --extra-ldsoflags=ELDFLAGS add ELDFLAGS to LDSOFLAGS [$LDSOFLAGS]
 382   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 383   --extra-version=STRING   version string suffix []
 384   --optflags=OPTFLAGS      override optimization-related compiler flags
 385   --nvccflags=NVCCFLAGS    override nvcc flags [$nvccflags_default]
 386   --build-suffix=SUFFIX    library name suffix []
 387   --enable-pic             build position-independent code
 388   --enable-thumb           compile for Thumb instruction set
 389   --enable-lto             use link-time optimization
 390   --env="ENV=override"     override the environment variables
 391
 392 Advanced options (experts only):
 393   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 394   --custom-allocator=NAME  use a supported custom allocator
 395   --disable-symver         disable symbol versioning
 396   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 397   --disable-safe-bitstream-reader
 398                            disable buffer boundary checking in bitreaders
 399                            (faster, but may crash)
 400   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
 401
 402 Optimization options (experts only):
 403   --disable-asm            disable all assembly optimizations
 404   --disable-altivec        disable AltiVec optimizations
 405   --disable-vsx            disable VSX optimizations
 406   --disable-power8         disable POWER8 optimizations
 407   --disable-amd3dnow       disable 3DNow! optimizations
 408   --disable-amd3dnowext    disable 3DNow! extended optimizations
 409   --disable-mmx            disable MMX optimizations
 410   --disable-mmxext         disable MMXEXT optimizations
 411   --disable-sse            disable SSE optimizations
 412   --disable-sse2           disable SSE2 optimizations
 413   --disable-sse3           disable SSE3 optimizations
 414   --disable-ssse3          disable SSSE3 optimizations
 415   --disable-sse4           disable SSE4 optimizations
 416   --disable-sse42          disable SSE4.2 optimizations
 417   --disable-avx            disable AVX optimizations
 418   --disable-xop            disable XOP optimizations
 419   --disable-fma3           disable FMA3 optimizations
 420   --disable-fma4           disable FMA4 optimizations
 421   --disable-avx2           disable AVX2 optimizations
 422   --disable-avx512         disable AVX-512 optimizations
 423   --disable-aesni          disable AESNI optimizations
 424   --disable-armv5te        disable armv5te optimizations
 425   --disable-armv6          disable armv6 optimizations
 426   --disable-armv6t2        disable armv6t2 optimizations
 427   --disable-vfp            disable VFP optimizations
 428   --disable-neon           disable NEON optimizations
 429   --disable-inline-asm     disable use of inline assembly
 430   --disable-x86asm         disable use of standalone x86 assembly
 431   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
 432   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 433   --disable-msa            disable MSA optimizations
 434   --disable-mipsfpu        disable floating point MIPS optimizations
 435   --disable-mmi            disable Loongson SIMD optimizations
 436   --disable-fast-unaligned consider unaligned accesses slow
 437
 438 Developer options (useful when working on FFmpeg itself):
 439   --disable-debug          disable debugging symbols
 440   --enable-debug=LEVEL     set the debug level [$debuglevel]
 441   --disable-optimizations  disable compiler optimizations
 442   --enable-extra-warnings  enable more compiler warnings
 443   --disable-stripping      disable stripping of executables and shared libraries
 444   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 445                            2 causes a slowdown at runtime.
 446   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 447   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 448                            leaks and errors, using the specified valgrind binary.
 449                            Cannot be combined with --target-exec
 450   --enable-ftrapv          Trap arithmetic overflows
 451   --samples=PATH           location of test samples for FATE, if not set use
 452                            \$FATE_SAMPLES at make invocation time.
 453   --enable-neon-clobber-test check NEON registers for clobbering (should be
 454                            used only for debugging purposes)
 455   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 456                            should be used only for debugging purposes)
 457   --enable-random          randomly enable/disable components
 458   --disable-random
 459   --enable-random=LIST     randomly enable/disable specific components or
 460   --disable-random=LIST    component groups. LIST is a comma-separated list
 461                            of NAME[:PROB] entries where NAME is a component
 462                            (group) and PROB the probability associated with
 463                            NAME (default 0.5).
 464   --random-seed=VALUE      seed value for --enable/disable-random
 465   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 466                            (only applies to --disable-optimizations builds)
 467   --enable-osfuzz          Enable building fuzzer tool
 468   --libfuzzer=PATH         path to libfuzzer
 469   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
 470                            in the name) of tests whose result is ignored
 471   --enable-linux-perf      enable Linux Performance Monitor API
 472
 473 NOTE: Object files are built at the place where configure is launched.
 474 EOF
 475   exit 0
 476 }
 477
 478 if test -t 1 && which tput >/dev/null 2>&1; then
 479     ncolors=$(tput colors)
 480     if test -n "$ncolors" && test $ncolors -ge 8; then
 481         bold_color=$(tput bold)
 482         warn_color=$(tput setaf 3)
 483         error_color=$(tput setaf 1)
 484         reset_color=$(tput sgr0)
 485     fi
 486     # 72 used instead of 80 since that's the default of pr
 487     ncols=$(tput cols)
 488 fi
 489 : ${ncols:=72}
 490
 491 log(){
 492     echo "$@" >> $logfile
 493 }
 494
 495 log_file(){
 496     log BEGIN $1
 497     pr -n -t $1 >> $logfile
 498     log END $1
 499 }
 500
 501 warn(){
 502     log "WARNING: $*"
 503     WARNINGS="${WARNINGS}WARNING: $*\n"
 504 }
 505
 506 die(){
 507     log "$@"
 508     echo "$error_color$bold_color$@$reset_color"
 509     cat <<EOF
 510
 511 If you think configure made a mistake, make sure you are using the latest
 512 version from Git.  If the latest version fails, report the problem to the
 513 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 514 EOF
 515     if disabled logging; then
 516         cat <<EOF
 517 Rerun configure with logging enabled (do not use --disable-logging), and
 518 include the log this produces with your report.
 519 EOF
 520     else
 521         cat <<EOF
 522 Include the log file "$logfile" produced by configure as this will help
 523 solve the problem.
 524 EOF
 525     fi
 526     exit 1
 527 }
 528
 529 # Avoid locale weirdness, besides we really just want to translate ASCII.
 530 toupper(){
 531     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 532 }
 533
 534 tolower(){
 535     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 536 }
 537
 538 c_escape(){
 539     echo "$*" | sed 's/["\\]/\\\0/g'
 540 }
 541
 542 sh_quote(){
 543     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 544     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 545     echo "$v"
 546 }
 547
 548 cleanws(){
 549     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
 550 }
 551
 552 filter(){
 553     pat=$1
 554     shift
 555     for v; do
 556         eval "case '$v' in $pat) printf '%s ' '$v' ;; esac"
 557     done
 558 }
 559
 560 filter_out(){
 561     pat=$1
 562     shift
 563     for v; do
 564         eval "case '$v' in $pat) ;; *) printf '%s ' '$v' ;; esac"
 565     done
 566 }
 567
 568 map(){
 569     m=$1
 570     shift
 571     for v; do eval $m; done
 572 }
 573
 574 add_suffix(){
 575     suffix=$1
 576     shift
 577     for v; do echo ${v}${suffix}; done
 578 }
 579
 580 remove_suffix(){
 581     suffix=$1
 582     shift
 583     for v; do echo ${v%$suffix}; done
 584 }
 585
 586 set_all(){
 587     value=$1
 588     shift
 589     for var in $*; do
 590         eval $var=$value
 591     done
 592 }
 593
 594 set_weak(){
 595     value=$1
 596     shift
 597     for var; do
 598         eval : \${$var:=$value}
 599     done
 600 }
 601
 602 sanitize_var_name(){
 603     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 604 }
 605
 606 set_sanitized(){
 607     var=$1
 608     shift
 609     eval $(sanitize_var_name "$var")='$*'
 610 }
 611
 612 get_sanitized(){
 613     eval echo \$$(sanitize_var_name "$1")
 614 }
 615
 616 pushvar(){
 617     for pvar in $*; do
 618         eval level=\${${pvar}_level:=0}
 619         eval ${pvar}_${level}="\$$pvar"
 620         eval ${pvar}_level=$(($level+1))
 621     done
 622 }
 623
 624 popvar(){
 625     for pvar in $*; do
 626         eval level=\${${pvar}_level:-0}
 627         test $level = 0 && continue
 628         eval level=$(($level-1))
 629         eval $pvar="\${${pvar}_${level}}"
 630         eval ${pvar}_level=$level
 631         eval unset ${pvar}_${level}
 632     done
 633 }
 634
 635 request(){
 636     for var in $*; do
 637         eval ${var}_requested=yes
 638         eval $var=
 639     done
 640 }
 641
 642 enable(){
 643     set_all yes $*
 644 }
 645
 646 disable(){
 647     set_all no $*
 648 }
 649
 650 enable_weak(){
 651     set_weak yes $*
 652 }
 653
 654 disable_weak(){
 655     set_weak no $*
 656 }
 657
 658 enable_sanitized(){
 659     for var; do
 660         enable $(sanitize_var_name $var)
 661     done
 662 }
 663
 664 disable_sanitized(){
 665     for var; do
 666         disable $(sanitize_var_name $var)
 667     done
 668 }
 669
 670 do_enable_deep(){
 671     for var; do
 672         enabled $var && continue
 673         eval sel="\$${var}_select"
 674         eval sgs="\$${var}_suggest"
 675         pushvar var sgs
 676         enable_deep $sel
 677         popvar sgs
 678         enable_deep_weak $sgs
 679         popvar var
 680     done
 681 }
 682
 683 enable_deep(){
 684     do_enable_deep $*
 685     enable $*
 686 }
 687
 688 enable_deep_weak(){
 689     for var; do
 690         disabled $var && continue
 691         pushvar var
 692         do_enable_deep $var
 693         popvar var
 694         enable_weak $var
 695     done
 696 }
 697
 698 requested(){
 699     test "${1#!}" = "$1" && op="=" || op="!="
 700     eval test "x\$${1#!}_requested" $op "xyes"
 701 }
 702
 703 enabled(){
 704     test "${1#!}" = "$1" && op="=" || op="!="
 705     eval test "x\$${1#!}" $op "xyes"
 706 }
 707
 708 disabled(){
 709     test "${1#!}" = "$1" && op="=" || op="!="
 710     eval test "x\$${1#!}" $op "xno"
 711 }
 712
 713 enabled_all(){
 714     for opt; do
 715         enabled $opt || return 1
 716     done
 717 }
 718
 719 disabled_all(){
 720     for opt; do
 721         disabled $opt || return 1
 722     done
 723 }
 724
 725 enabled_any(){
 726     for opt; do
 727         enabled $opt && return 0
 728     done
 729 }
 730
 731 disabled_any(){
 732     for opt; do
 733         disabled $opt && return 0
 734     done
 735     return 1
 736 }
 737
 738 set_default(){
 739     for opt; do
 740         eval : \${$opt:=\$${opt}_default}
 741     done
 742 }
 743
 744 is_in(){
 745     value=$1
 746     shift
 747     for var in $*; do
 748         [ $var = $value ] && return 0
 749     done
 750     return 1
 751 }
 752
 753 check_deps(){
 754     for cfg; do
 755         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 756         disabled ${cfg}_checking && continue
 757         enable ${cfg}_checking
 758
 759         eval dep_all="\$${cfg}_deps"
 760         eval dep_any="\$${cfg}_deps_any"
 761         eval dep_con="\$${cfg}_conflict"
 762         eval dep_sel="\$${cfg}_select"
 763         eval dep_sgs="\$${cfg}_suggest"
 764         eval dep_ifa="\$${cfg}_if"
 765         eval dep_ifn="\$${cfg}_if_any"
 766
 767         pushvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
 768         check_deps $dep_all $dep_any $dep_con $dep_sel $dep_sgs $dep_ifa $dep_ifn
 769         popvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
 770
 771         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 772         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 773         enabled_all  $dep_all || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not all dependencies are satisfied: $dep_all"; }
 774         enabled_any  $dep_any || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not any dependency is satisfied: $dep_any"; }
 775         disabled_all $dep_con || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some conflicting dependencies are unsatisfied: $dep_con"; }
 776         disabled_any $dep_sel && { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some selected dependency is unsatisfied: $dep_sel"; }
 777
 778         enabled $cfg && enable_deep_weak $dep_sel $dep_sgs
 779
 780         for dep in $dep_all $dep_any $dep_sel $dep_sgs; do
 781             # filter out library deps, these do not belong in extralibs
 782             is_in $dep $LIBRARY_LIST && continue
 783             enabled $dep && eval append ${cfg}_extralibs ${dep}_extralibs
 784         done
 785
 786         disable ${cfg}_checking
 787     done
 788 }
 789
 790 print_config(){
 791     pfx=$1
 792     files=$2
 793     shift 2
 794     map 'eval echo "$v \${$v:-no}"' "$@" |
 795     awk "BEGIN { split(\"$files\", files) }
 796         {
 797             c = \"$pfx\" toupper(\$1);
 798             v = \$2;
 799             sub(/yes/, 1, v);
 800             sub(/no/,  0, v);
 801             for (f in files) {
 802                 file = files[f];
 803                 if (file ~ /\\.h\$/) {
 804                     printf(\"#define %s %d\\n\", c, v) >>file;
 805                 } else if (file ~ /\\.asm\$/) {
 806                     printf(\"%%define %s %d\\n\", c, v) >>file;
 807                 } else if (file ~ /\\.mak\$/) {
 808                     n = -v ? \"\" : \"!\";
 809                     printf(\"%s%s=yes\\n\", n, c) >>file;
 810                 } else if (file ~ /\\.texi\$/) {
 811                     pre = -v ? \"\" : \"@c \";
 812                     yesno = \$2;
 813                     c2 = tolower(c);
 814                     gsub(/_/, \"-\", c2);
 815                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 816                 }
 817             }
 818         }"
 819 }
 820
 821 print_enabled(){
 822     suf=$1
 823     shift
 824     for v; do
 825         enabled $v && printf "%s\n" ${v%$suf}
 826     done
 827 }
 828
 829 append(){
 830     var=$1
 831     shift
 832     eval "$var=\"\$$var $*\""
 833 }
 834
 835 prepend(){
 836     var=$1
 837     shift
 838     eval "$var=\"$* \$$var\""
 839 }
 840
 841 unique(){
 842     var=$1
 843     uniq_list=""
 844     for tok in $(eval echo \$$var); do
 845         uniq_list="$(filter_out $tok $uniq_list) $tok"
 846     done
 847     eval "$var=\"${uniq_list}\""
 848 }
 849
 850 resolve(){
 851     var=$1
 852     tmpvar=
 853     for entry in $(eval echo \$$var); do
 854         tmpvar="$tmpvar $(eval echo \$${entry})"
 855     done
 856     eval "$var=\"${tmpvar}\""
 857 }
 858
 859 add_cppflags(){
 860     append CPPFLAGS "$@"
 861 }
 862
 863 add_cflags(){
 864     append CFLAGS $($cflags_filter "$@")
 865 }
 866
 867 add_cflags_headers(){
 868     append CFLAGS_HEADERS $($cflags_filter "$@")
 869 }
 870
 871 add_cxxflags(){
 872     append CXXFLAGS $($cflags_filter "$@")
 873 }
 874
 875 add_asflags(){
 876     append ASFLAGS $($asflags_filter "$@")
 877 }
 878
 879 add_objcflags(){
 880     append OBJCFLAGS $($objcflags_filter "$@")
 881 }
 882
 883 add_ldflags(){
 884     append LDFLAGS $($ldflags_filter "$@")
 885 }
 886
 887 add_ldexeflags(){
 888     append LDEXEFLAGS $($ldflags_filter "$@")
 889 }
 890
 891 add_ldsoflags(){
 892     append LDSOFLAGS $($ldflags_filter "$@")
 893 }
 894
 895 add_stripflags(){
 896     append ASMSTRIPFLAGS "$@"
 897 }
 898
 899 add_extralibs(){
 900     prepend extralibs $($ldflags_filter "$@")
 901 }
 902
 903 add_host_cppflags(){
 904     append host_cppflags "$@"
 905 }
 906
 907 add_host_cflags(){
 908     append host_cflags $($host_cflags_filter "$@")
 909 }
 910
 911 add_host_ldflags(){
 912     append host_ldflags $($host_ldflags_filter "$@")
 913 }
 914
 915 add_compat(){
 916     append compat_objs $1
 917     shift
 918     map 'add_cppflags -D$v' "$@"
 919 }
 920
 921 test_cmd(){
 922     log "$@"
 923     "$@" >> $logfile 2>&1
 924 }
 925
 926 test_stat(){
 927     log test_stat "$@"
 928     stat "$1" >> $logfile 2>&1
 929 }
 930
 931 cc_o(){
 932     eval printf '%s\\n' $CC_O
 933 }
 934
 935 cc_e(){
 936     eval printf '%s\\n' $CC_E
 937 }
 938
 939 test_cc(){
 940     log test_cc "$@"
 941     cat > $TMPC
 942     log_file $TMPC
 943     test_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 944 }
 945
 946 test_cxx(){
 947     log test_cxx "$@"
 948     cat > $TMPCPP
 949     log_file $TMPCPP
 950     test_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
 951 }
 952
 953 test_objcc(){
 954     log test_objcc "$@"
 955     cat > $TMPM
 956     log_file $TMPM
 957     test_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
 958 }
 959
 960 test_cpp(){
 961     log test_cpp "$@"
 962     cat > $TMPC
 963     log_file $TMPC
 964     test_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 965 }
 966
 967 as_o(){
 968     eval printf '%s\\n' $AS_O
 969 }
 970
 971 test_as(){
 972     log test_as "$@"
 973     cat > $TMPS
 974     log_file $TMPS
 975     test_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 976 }
 977
 978 x86asm_o(){
 979     eval printf '%s\\n' $X86ASM_O
 980 }
 981
 982 test_x86asm(){
 983     log test_x86asm "$@"
 984     echo "$1" > $TMPASM
 985     log_file $TMPASM
 986     shift
 987     test_cmd $x86asmexe $X86ASMFLAGS -Werror "$@" $(x86asm_o $TMPO) $TMPASM
 988 }
 989
 990 check_cmd(){
 991     log check_cmd "$@"
 992     cmd=$1
 993     disabled $cmd && return
 994     disable $cmd
 995     test_cmd $@ && enable $cmd
 996 }
 997
 998 check_as(){
 999     log check_as "$@"
1000     name=$1
1001     code=$2
1002     shift 2
1003     disable $name
1004     test_as $@ <<EOF && enable $name
1005 $code
1006 EOF
1007 }
1008
1009 check_inline_asm(){
1010     log check_inline_asm "$@"
1011     name="$1"
1012     code="$2"
1013     shift 2
1014     disable $name
1015     test_cc "$@" <<EOF && enable $name
1016 void foo(void){ __asm__ volatile($code); }
1017 EOF
1018 }
1019
1020 check_inline_asm_flags(){
1021     log check_inline_asm_flags "$@"
1022     name="$1"
1023     code="$2"
1024     flags=''
1025     shift 2
1026     while [ "$1" != "" ]; do
1027       append flags $1
1028       shift
1029     done;
1030     disable $name
1031     cat > $TMPC <<EOF
1032 void foo(void){ __asm__ volatile($code); }
1033 EOF
1034     log_file $TMPC
1035     test_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
1036     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
1037 }
1038
1039 check_insn(){
1040     log check_insn "$@"
1041     check_inline_asm ${1}_inline "$2"
1042     check_as ${1}_external "$2"
1043 }
1044
1045 check_x86asm(){
1046     log check_x86asm "$@"
1047     name=$1
1048     shift
1049     disable $name
1050     test_x86asm "$@" && enable $name
1051 }
1052
1053 ld_o(){
1054     eval printf '%s\\n' $LD_O
1055 }
1056
1057 test_ld(){
1058     log test_ld "$@"
1059     type=$1
1060     shift 1
1061     flags=$(filter_out '-l*|*.so' $@)
1062     libs=$(filter '-l*|*.so' $@)
1063     test_$type $($cflags_filter $flags) || return
1064     flags=$($ldflags_filter $flags)
1065     libs=$($ldflags_filter $libs)
1066     test_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
1067 }
1068
1069 check_ld(){
1070     log check_ld "$@"
1071     type=$1
1072     name=$2
1073     shift 2
1074     disable $name
1075     test_ld $type $@ && enable $name
1076 }
1077
1078 print_include(){
1079     hdr=$1
1080     test "${hdr%.h}" = "${hdr}" &&
1081         echo "#include $hdr"    ||
1082         echo "#include <$hdr>"
1083 }
1084
1085 test_code(){
1086     log test_code "$@"
1087     check=$1
1088     headers=$2
1089     code=$3
1090     shift 3
1091     {
1092         for hdr in $headers; do
1093             print_include $hdr
1094         done
1095         echo "int main(void) { $code; return 0; }"
1096     } | test_$check "$@"
1097 }
1098
1099 check_cppflags(){
1100     log check_cppflags "$@"
1101     test_cpp "$@" <<EOF && append CPPFLAGS "$@"
1102 #include <stdlib.h>
1103 EOF
1104 }
1105
1106 test_cflags(){
1107     log test_cflags "$@"
1108     set -- $($cflags_filter "$@")
1109     test_cc "$@" <<EOF
1110 int x;
1111 EOF
1112 }
1113
1114 check_cflags(){
1115     log check_cflags "$@"
1116     test_cflags "$@" && add_cflags "$@"
1117 }
1118
1119 check_cxxflags(){
1120     log check_cxxflags "$@"
1121     set -- $($cflags_filter "$@")
1122     test_cxx "$@" <<EOF && append CXXFLAGS "$@"
1123 int x;
1124 EOF
1125 }
1126
1127 test_objcflags(){
1128     log test_objcflags "$@"
1129     set -- $($objcflags_filter "$@")
1130     test_objcc "$@" <<EOF
1131 int x;
1132 EOF
1133 }
1134
1135 check_objcflags(){
1136     log check_objcflags "$@"
1137     test_objcflags "$@" && add_objcflags "$@"
1138 }
1139
1140 test_ldflags(){
1141     log test_ldflags "$@"
1142     set -- $($ldflags_filter "$@")
1143     test_ld "cc" "$@" <<EOF
1144 int main(void){ return 0; }
1145 EOF
1146 }
1147
1148 check_ldflags(){
1149     log check_ldflags "$@"
1150     test_ldflags "$@" && add_ldflags "$@"
1151 }
1152
1153 test_stripflags(){
1154     log test_stripflags "$@"
1155     # call test_cc to get a fresh TMPO
1156     test_cc <<EOF
1157 int main(void) { return 0; }
1158 EOF
1159     test_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1160 }
1161
1162 check_stripflags(){
1163     log check_stripflags "$@"
1164     test_stripflags "$@" && add_stripflags "$@"
1165 }
1166
1167 check_header(){
1168     log check_header "$@"
1169     headers=$1
1170     shift
1171     disable_sanitized $headers
1172     {
1173         for hdr in $headers; do
1174             print_include $hdr
1175         done
1176         echo "int x;"
1177     } | test_cpp "$@" && enable_sanitized $headers
1178 }
1179
1180 check_header_objcc(){
1181     log check_header_objcc "$@"
1182     rm -f -- "$TMPO"
1183     header=$1
1184     shift
1185     disable_sanitized $header
1186     {
1187        echo "#include <$header>"
1188        echo "int main(void) { return 0; }"
1189     } | test_objcc && test_stat "$TMPO" && enable_sanitized $header
1190 }
1191
1192 check_apple_framework(){
1193     log check_apple_framework "$@"
1194     framework="$1"
1195     name="$(tolower $framework)"
1196     header="${framework}/${framework}.h"
1197     disable $name
1198     check_header_objcc $header &&
1199         enable $name && eval ${name}_extralibs='"-framework $framework"'
1200 }
1201
1202 check_func(){
1203     log check_func "$@"
1204     func=$1
1205     shift
1206     disable $func
1207     test_ld "cc" "$@" <<EOF && enable $func
1208 extern int $func();
1209 int main(void){ $func(); }
1210 EOF
1211 }
1212
1213 check_complexfunc(){
1214     log check_complexfunc "$@"
1215     func=$1
1216     narg=$2
1217     shift 2
1218     test $narg = 2 && args="f, g" || args="f * I"
1219     disable $func
1220     test_ld "cc" "$@" <<EOF && enable $func
1221 #include <complex.h>
1222 #include <math.h>
1223 float foo(complex float f, complex float g) { return $func($args); }
1224 int main(void){ return (int) foo; }
1225 EOF
1226 }
1227
1228 check_mathfunc(){
1229     log check_mathfunc "$@"
1230     func=$1
1231     narg=$2
1232     shift 2
1233     test $narg = 2 && args="f, g" || args="f"
1234     disable $func
1235     test_ld "cc" "$@" <<EOF && enable $func
1236 #include <math.h>
1237 float foo(float f, float g) { return $func($args); }
1238 int main(void){ return (int) foo; }
1239 EOF
1240 }
1241
1242 check_func_headers(){
1243     log check_func_headers "$@"
1244     headers=$1
1245     funcs=$2
1246     shift 2
1247     {
1248         for hdr in $headers; do
1249             print_include $hdr
1250         done
1251         echo "#include <stdint.h>"
1252         for func in $funcs; do
1253             echo "long check_$func(void) { return (long) $func; }"
1254         done
1255         echo "int main(void) { int ret = 0;"
1256         # LTO could optimize out the test functions without this
1257         for func in $funcs; do
1258             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1259         done
1260         echo "return ret; }"
1261     } | test_ld "cc" "$@" && enable $funcs && enable_sanitized $headers
1262 }
1263
1264 check_class_headers_cpp(){
1265     log check_class_headers_cpp "$@"
1266     headers=$1
1267     classes=$2
1268     shift 2
1269     {
1270         for hdr in $headers; do
1271             echo "#include <$hdr>"
1272         done
1273         echo "int main(void) { "
1274         i=1
1275         for class in $classes; do
1276             echo "$class obj$i;"
1277             i=$(expr $i + 1)
1278         done
1279         echo "return 0; }"
1280     } | test_ld "cxx" "$@" && enable $funcs && enable_sanitized $headers
1281 }
1282
1283 test_cpp_condition(){
1284     log test_cpp_condition "$@"
1285     header=$1
1286     condition=$2
1287     shift 2
1288     test_cpp "$@" <<EOF
1289 #include <$header>
1290 #if !($condition)
1291 #error "unsatisfied condition: $condition"
1292 #endif
1293 EOF
1294 }
1295
1296 check_cpp_condition(){
1297     log check_cpp_condition "$@"
1298     name=$1
1299     shift 1
1300     disable $name
1301     test_cpp_condition "$@" && enable $name
1302 }
1303
1304 test_cflags_cc(){
1305     log test_cflags_cc "$@"
1306     flags=$1
1307     header=$2
1308     condition=$3
1309     shift 3
1310     set -- $($cflags_filter "$flags")
1311     test_cc "$@" <<EOF
1312 #include <$header>
1313 #if !($condition)
1314 #error "unsatisfied condition: $condition"
1315 #endif
1316 EOF
1317 }
1318
1319 check_lib(){
1320     log check_lib "$@"
1321     name="$1"
1322     headers="$2"
1323     funcs="$3"
1324     shift 3
1325     disable $name
1326     check_func_headers "$headers" "$funcs" "$@" &&
1327         enable $name && eval ${name}_extralibs="\$@"
1328 }
1329
1330 check_lib_cpp(){
1331     log check_lib_cpp "$@"
1332     name="$1"
1333     headers="$2"
1334     classes="$3"
1335     shift 3
1336     disable $name
1337     check_class_headers_cpp "$headers" "$classes" "$@" &&
1338         enable $name && eval ${name}_extralibs="\$@"
1339 }
1340
1341 test_pkg_config(){
1342     log test_pkg_config "$@"
1343     name="$1"
1344     pkg_version="$2"
1345     pkg="${2%% *}"
1346     headers="$3"
1347     funcs="$4"
1348     shift 4
1349     disable $name
1350     test_cmd $pkg_config --exists --print-errors $pkg_version || return
1351     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1352     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1353     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1354         enable $name &&
1355         set_sanitized "${name}_cflags"    $pkg_cflags &&
1356         set_sanitized "${name}_extralibs" $pkg_libs
1357 }
1358
1359 check_pkg_config(){
1360     log check_pkg_config "$@"
1361     name="$1"
1362     test_pkg_config "$@" &&
1363         eval add_cflags \$${name}_cflags
1364 }
1365
1366 test_exec(){
1367     test_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1368 }
1369
1370 check_exec_crash(){
1371     log check_exec_crash "$@"
1372     code=$(cat)
1373
1374     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1375     # are safe but may not be available everywhere.  Thus we use
1376     # raise(SIGTERM) instead.  The check is run in a subshell so we
1377     # can redirect the "Terminated" message from the shell.  SIGBUS
1378     # is not defined by standard C so it is used conditionally.
1379
1380     (test_exec "$@") >> $logfile 2>&1 <<EOF
1381 #include <signal.h>
1382 static void sighandler(int sig){
1383     raise(SIGTERM);
1384 }
1385 int foo(void){
1386     $code
1387 }
1388 int (*func_ptr)(void) = foo;
1389 int main(void){
1390     signal(SIGILL, sighandler);
1391     signal(SIGFPE, sighandler);
1392     signal(SIGSEGV, sighandler);
1393 #ifdef SIGBUS
1394     signal(SIGBUS, sighandler);
1395 #endif
1396     return func_ptr();
1397 }
1398 EOF
1399 }
1400
1401 check_type(){
1402     log check_type "$@"
1403     headers=$1
1404     type=$2
1405     shift 2
1406     disable_sanitized "$type"
1407     test_code cc "$headers" "$type v" "$@" && enable_sanitized "$type"
1408 }
1409
1410 check_struct(){
1411     log check_struct "$@"
1412     headers=$1
1413     struct=$2
1414     member=$3
1415     shift 3
1416     disable_sanitized "${struct}_${member}"
1417     test_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1418         enable_sanitized "${struct}_${member}"
1419 }
1420
1421 check_builtin(){
1422     log check_builtin "$@"
1423     name=$1
1424     headers=$2
1425     builtin=$3
1426     shift 3
1427     disable "$name"
1428     test_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1429 }
1430
1431 check_compile_assert(){
1432     log check_compile_assert "$@"
1433     name=$1
1434     headers=$2
1435     condition=$3
1436     shift 3
1437     disable "$name"
1438     test_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1439 }
1440
1441 check_cc(){
1442     log check_cc "$@"
1443     name=$1
1444     shift
1445     disable "$name"
1446     test_code cc "$@" && enable "$name"
1447 }
1448
1449 require(){
1450     log require "$@"
1451     name_version="$1"
1452     name="${1%% *}"
1453     shift
1454     check_lib $name "$@" || die "ERROR: $name_version not found"
1455 }
1456
1457 require_cc(){
1458     log require_cc "$@"
1459     name="$1"
1460     shift
1461     test_code cc "$@" || die "ERROR: $name failed"
1462 }
1463
1464 require_cpp(){
1465     name="$1"
1466     headers="$2"
1467     classes="$3"
1468     shift 3
1469     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1470 }
1471
1472 require_header(){
1473     log require_header "$@"
1474     headers="$1"
1475     check_header "$@" || die "ERROR: $headers not found"
1476 }
1477
1478 require_cpp_condition(){
1479     log require_cpp_condition "$@"
1480     condition="$2"
1481     test_cpp_condition "$@" || die "ERROR: $condition not satisfied"
1482 }
1483
1484 require_pkg_config(){
1485     log require_pkg_config "$@"
1486     pkg_version="$2"
1487     check_pkg_config "$@" || die "ERROR: $pkg_version not found using pkg-config$pkg_config_fail_message"
1488 }
1489
1490 hostcc_e(){
1491     eval printf '%s\\n' $HOSTCC_E
1492 }
1493
1494 hostcc_o(){
1495     eval printf '%s\\n' $HOSTCC_O
1496 }
1497
1498 test_host_cc(){
1499     log test_host_cc "$@"
1500     cat > $TMPC
1501     log_file $TMPC
1502     test_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1503 }
1504
1505 test_host_cpp(){
1506     log test_host_cpp "$@"
1507     cat > $TMPC
1508     log_file $TMPC
1509     test_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1510 }
1511
1512 check_host_cppflags(){
1513     log check_host_cppflags "$@"
1514     test_host_cpp "$@" <<EOF && append host_cppflags "$@"
1515 #include <stdlib.h>
1516 EOF
1517 }
1518
1519 check_host_cflags(){
1520     log check_host_cflags "$@"
1521     set -- $($host_cflags_filter "$@")
1522     test_host_cc "$@" <<EOF && append host_cflags "$@"
1523 int x;
1524 EOF
1525 }
1526
1527 test_host_cpp_condition(){
1528     log test_host_cpp_condition "$@"
1529     header=$1
1530     condition=$2
1531     shift 2
1532     test_host_cpp "$@" <<EOF
1533 #include <$header>
1534 #if !($condition)
1535 #error "unsatisfied condition: $condition"
1536 #endif
1537 EOF
1538 }
1539
1540 check_host_cpp_condition(){
1541     log check_host_cpp_condition "$@"
1542     name=$1
1543     shift 1
1544     disable $name
1545     test_host_cpp_condition "$@" && enable $name
1546 }
1547
1548 cp_if_changed(){
1549     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1550     mkdir -p "$(dirname $2)"
1551     cp -f "$1" "$2"
1552 }
1553
1554 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1555 # system-dependent things.
1556
1557 AVCODEC_COMPONENTS="
1558     bsfs
1559     decoders
1560     encoders
1561     hwaccels
1562     parsers
1563 "
1564
1565 AVDEVICE_COMPONENTS="
1566     indevs
1567     outdevs
1568 "
1569
1570 AVFILTER_COMPONENTS="
1571     filters
1572 "
1573
1574 AVFORMAT_COMPONENTS="
1575     demuxers
1576     muxers
1577     protocols
1578 "
1579
1580 COMPONENT_LIST="
1581     $AVCODEC_COMPONENTS
1582     $AVDEVICE_COMPONENTS
1583     $AVFILTER_COMPONENTS
1584     $AVFORMAT_COMPONENTS
1585 "
1586
1587 EXAMPLE_LIST="
1588     avio_dir_cmd_example
1589     avio_reading_example
1590     decode_audio_example
1591     decode_video_example
1592     demuxing_decoding_example
1593     encode_audio_example
1594     encode_video_example
1595     extract_mvs_example
1596     filter_audio_example
1597     filtering_audio_example
1598     filtering_video_example
1599     http_multiclient_example
1600     hw_decode_example
1601     metadata_example
1602     muxing_example
1603     qsvdec_example
1604     remuxing_example
1605     resampling_audio_example
1606     scaling_video_example
1607     transcode_aac_example
1608     transcoding_example
1609     vaapi_encode_example
1610     vaapi_transcode_example
1611 "
1612
1613 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1614     alsa
1615     appkit
1616     avfoundation
1617     bzlib
1618     coreimage
1619     iconv
1620     libxcb
1621     libxcb_shm
1622     libxcb_shape
1623     libxcb_xfixes
1624     lzma
1625     schannel
1626     sdl2
1627     securetransport
1628     sndio
1629     xlib
1630     zlib
1631 "
1632
1633 EXTERNAL_LIBRARY_GPL_LIST="
1634     avisynth
1635     frei0r
1636     libcdio
1637     librubberband
1638     libvidstab
1639     libx264
1640     libx265
1641     libxavs
1642     libxvid
1643 "
1644
1645 EXTERNAL_LIBRARY_NONFREE_LIST="
1646     decklink
1647     libndi_newtek
1648     libfdk_aac
1649     openssl
1650     libtls
1651 "
1652
1653 EXTERNAL_LIBRARY_VERSION3_LIST="
1654     gmp
1655     libopencore_amrnb
1656     libopencore_amrwb
1657     libvmaf
1658     libvo_amrwbenc
1659     rkmpp
1660 "
1661
1662 EXTERNAL_LIBRARY_GPLV3_LIST="
1663     libsmbclient
1664 "
1665
1666 EXTERNAL_LIBRARY_LIST="
1667     $EXTERNAL_LIBRARY_GPL_LIST
1668     $EXTERNAL_LIBRARY_NONFREE_LIST
1669     $EXTERNAL_LIBRARY_VERSION3_LIST
1670     $EXTERNAL_LIBRARY_GPLV3_LIST
1671     chromaprint
1672     gcrypt
1673     gnutls
1674     jni
1675     ladspa
1676     libaom
1677     libass
1678     libbluray
1679     libbs2b
1680     libcaca
1681     libcelt
1682     libcodec2
1683     libdc1394
1684     libdrm
1685     libflite
1686     libfontconfig
1687     libfreetype
1688     libfribidi
1689     libgme
1690     libgsm
1691     libiec61883
1692     libilbc
1693     libjack
1694     libkvazaar
1695     libmodplug
1696     libmp3lame
1697     libmysofa
1698     libopencv
1699     libopenh264
1700     libopenjpeg
1701     libopenmpt
1702     libopus
1703     libpulse
1704     librsvg
1705     librtmp
1706     libshine
1707     libsmbclient
1708     libsnappy
1709     libsoxr
1710     libspeex
1711     libsrt
1712     libssh
1713     libtesseract
1714     libtheora
1715     libtwolame
1716     libv4l2
1717     libvorbis
1718     libvpx
1719     libwavpack
1720     libwebp
1721     libxml2
1722     libzimg
1723     libzmq
1724     libzvbi
1725     lv2
1726     mediacodec
1727     openal
1728     opengl
1729     vapoursynth
1730 "
1731
1732 HWACCEL_AUTODETECT_LIBRARY_LIST="
1733     amf
1734     audiotoolbox
1735     crystalhd
1736     cuda
1737     cuvid
1738     d3d11va
1739     dxva2
1740     ffnvcodec
1741     nvdec
1742     nvenc
1743     vaapi
1744     vdpau
1745     videotoolbox
1746     v4l2_m2m
1747     xvmc
1748 "
1749
1750 # catchall list of things that require external libs to link
1751 EXTRALIBS_LIST="
1752     cpu_init
1753     cws2fws
1754 "
1755
1756 HWACCEL_LIBRARY_NONFREE_LIST="
1757     cuda_sdk
1758     libnpp
1759 "
1760
1761 HWACCEL_LIBRARY_LIST="
1762     $HWACCEL_LIBRARY_NONFREE_LIST
1763     libmfx
1764     mmal
1765     omx
1766     opencl
1767 "
1768
1769 DOCUMENT_LIST="
1770     doc
1771     htmlpages
1772     manpages
1773     podpages
1774     txtpages
1775 "
1776
1777 FEATURE_LIST="
1778     ftrapv
1779     gray
1780     hardcoded_tables
1781     omx_rpi
1782     runtime_cpudetect
1783     safe_bitstream_reader
1784     shared
1785     small
1786     static
1787     swscale_alpha
1788 "
1789
1790 LIBRARY_LIST="
1791     avcodec
1792     avdevice
1793     avfilter
1794     avformat
1795     avresample
1796     avutil
1797     postproc
1798     swresample
1799     swscale
1800 "
1801
1802 LICENSE_LIST="
1803     gpl
1804     nonfree
1805     version3
1806 "
1807
1808 PROGRAM_LIST="
1809     ffplay
1810     ffprobe
1811     ffmpeg
1812 "
1813
1814 SUBSYSTEM_LIST="
1815     dct
1816     dwt
1817     error_resilience
1818     faan
1819     fast_unaligned
1820     fft
1821     lsp
1822     lzo
1823     mdct
1824     pixelutils
1825     network
1826     rdft
1827 "
1828
1829 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1830 CONFIG_LIST="
1831     $DOCUMENT_LIST
1832     $EXAMPLE_LIST
1833     $EXTERNAL_LIBRARY_LIST
1834     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1835     $HWACCEL_LIBRARY_LIST
1836     $HWACCEL_AUTODETECT_LIBRARY_LIST
1837     $FEATURE_LIST
1838     $LICENSE_LIST
1839     $LIBRARY_LIST
1840     $PROGRAM_LIST
1841     $SUBSYSTEM_LIST
1842     autodetect
1843     fontconfig
1844     linux_perf
1845     memory_poisoning
1846     neon_clobber_test
1847     ossfuzz
1848     pic
1849     thumb
1850     valgrind_backtrace
1851     xmm_clobber_test
1852     $COMPONENT_LIST
1853 "
1854
1855 THREADS_LIST="
1856     pthreads
1857     os2threads
1858     w32threads
1859 "
1860
1861 ATOMICS_LIST="
1862     atomics_gcc
1863     atomics_suncc
1864     atomics_win32
1865 "
1866
1867 AUTODETECT_LIBS="
1868     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1869     $HWACCEL_AUTODETECT_LIBRARY_LIST
1870     $THREADS_LIST
1871 "
1872
1873 ARCH_LIST="
1874     aarch64
1875     alpha
1876     arm
1877     avr32
1878     avr32_ap
1879     avr32_uc
1880     bfin
1881     ia64
1882     m68k
1883     mips
1884     mips64
1885     parisc
1886     ppc
1887     ppc64
1888     s390
1889     sh4
1890     sparc
1891     sparc64
1892     tilegx
1893     tilepro
1894     tomi
1895     x86
1896     x86_32
1897     x86_64
1898 "
1899
1900 ARCH_EXT_LIST_ARM="
1901     armv5te
1902     armv6
1903     armv6t2
1904     armv8
1905     neon
1906     vfp
1907     vfpv3
1908     setend
1909 "
1910
1911 ARCH_EXT_LIST_MIPS="
1912     mipsfpu
1913     mips32r2
1914     mips32r5
1915     mips64r2
1916     mips32r6
1917     mips64r6
1918     mipsdsp
1919     mipsdspr2
1920     msa
1921 "
1922
1923 ARCH_EXT_LIST_LOONGSON="
1924     loongson2
1925     loongson3
1926     mmi
1927 "
1928
1929 ARCH_EXT_LIST_X86_SIMD="
1930     aesni
1931     amd3dnow
1932     amd3dnowext
1933     avx
1934     avx2
1935     avx512
1936     fma3
1937     fma4
1938     mmx
1939     mmxext
1940     sse
1941     sse2
1942     sse3
1943     sse4
1944     sse42
1945     ssse3
1946     xop
1947 "
1948
1949 ARCH_EXT_LIST_PPC="
1950     altivec
1951     dcbzl
1952     ldbrx
1953     power8
1954     ppc4xx
1955     vsx
1956 "
1957
1958 ARCH_EXT_LIST_X86="
1959     $ARCH_EXT_LIST_X86_SIMD
1960     cpunop
1961     i686
1962 "
1963
1964 ARCH_EXT_LIST="
1965     $ARCH_EXT_LIST_ARM
1966     $ARCH_EXT_LIST_PPC
1967     $ARCH_EXT_LIST_X86
1968     $ARCH_EXT_LIST_MIPS
1969     $ARCH_EXT_LIST_LOONGSON
1970 "
1971
1972 ARCH_FEATURES="
1973     aligned_stack
1974     fast_64bit
1975     fast_clz
1976     fast_cmov
1977     local_aligned
1978     simd_align_16
1979     simd_align_32
1980     simd_align_64
1981 "
1982
1983 BUILTIN_LIST="
1984     atomic_cas_ptr
1985     machine_rw_barrier
1986     MemoryBarrier
1987     mm_empty
1988     rdtsc
1989     sem_timedwait
1990     sync_val_compare_and_swap
1991 "
1992 HAVE_LIST_CMDLINE="
1993     inline_asm
1994     symver
1995     x86asm
1996 "
1997
1998 HAVE_LIST_PUB="
1999     bigendian
2000     fast_unaligned
2001 "
2002
2003 HEADERS_LIST="
2004     arpa_inet_h
2005     asm_types_h
2006     cdio_paranoia_h
2007     cdio_paranoia_paranoia_h
2008     cuda_h
2009     dispatch_dispatch_h
2010     dev_bktr_ioctl_bt848_h
2011     dev_bktr_ioctl_meteor_h
2012     dev_ic_bt8xx_h
2013     dev_video_bktr_ioctl_bt848_h
2014     dev_video_meteor_ioctl_meteor_h
2015     direct_h
2016     dirent_h
2017     dxgidebug_h
2018     dxva_h
2019     ES2_gl_h
2020     gsm_h
2021     io_h
2022     linux_perf_event_h
2023     machine_ioctl_bt848_h
2024     machine_ioctl_meteor_h
2025     malloc_h
2026     opencv2_core_core_c_h
2027     OpenGL_gl3_h
2028     poll_h
2029     sys_param_h
2030     sys_resource_h
2031     sys_select_h
2032     sys_soundcard_h
2033     sys_time_h
2034     sys_un_h
2035     sys_videoio_h
2036     termios_h
2037     udplite_h
2038     unistd_h
2039     valgrind_valgrind_h
2040     windows_h
2041     winsock2_h
2042 "
2043
2044 INTRINSICS_LIST="
2045     intrinsics_neon
2046 "
2047
2048 COMPLEX_FUNCS="
2049     cabs
2050     cexp
2051 "
2052
2053 MATH_FUNCS="
2054     atanf
2055     atan2f
2056     cbrt
2057     cbrtf
2058     copysign
2059     cosf
2060     erf
2061     exp2
2062     exp2f
2063     expf
2064     hypot
2065     isfinite
2066     isinf
2067     isnan
2068     ldexpf
2069     llrint
2070     llrintf
2071     log2
2072     log2f
2073     log10f
2074     lrint
2075     lrintf
2076     powf
2077     rint
2078     round
2079     roundf
2080     sinf
2081     trunc
2082     truncf
2083 "
2084
2085 SYSTEM_FEATURES="
2086     dos_paths
2087     libc_msvcrt
2088     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2089     section_data_rel_ro
2090     threads
2091     uwp
2092     winrt
2093 "
2094
2095 SYSTEM_FUNCS="
2096     access
2097     aligned_malloc
2098     arc4random
2099     clock_gettime
2100     closesocket
2101     CommandLineToArgvW
2102     fcntl
2103     getaddrinfo
2104     gethrtime
2105     getopt
2106     GetProcessAffinityMask
2107     GetProcessMemoryInfo
2108     GetProcessTimes
2109     getrusage
2110     GetSystemTimeAsFileTime
2111     gettimeofday
2112     glob
2113     glXGetProcAddress
2114     gmtime_r
2115     inet_aton
2116     isatty
2117     kbhit
2118     localtime_r
2119     lstat
2120     lzo1x_999_compress
2121     mach_absolute_time
2122     MapViewOfFile
2123     memalign
2124     mkstemp
2125     mmap
2126     mprotect
2127     nanosleep
2128     PeekNamedPipe
2129     posix_memalign
2130     pthread_cancel
2131     sched_getaffinity
2132     SecItemImport
2133     SetConsoleTextAttribute
2134     SetConsoleCtrlHandler
2135     setmode
2136     setrlimit
2137     Sleep
2138     strerror_r
2139     sysconf
2140     sysctl
2141     usleep
2142     UTGetOSTypeFromString
2143     VirtualAlloc
2144     wglGetProcAddress
2145 "
2146
2147 SYSTEM_LIBRARIES="
2148     bcrypt
2149     vaapi_drm
2150     vaapi_x11
2151     vdpau_x11
2152 "
2153
2154 TOOLCHAIN_FEATURES="
2155     as_arch_directive
2156     as_dn_directive
2157     as_fpu_directive
2158     as_func
2159     as_object_arch
2160     asm_mod_q
2161     blocks_extension
2162     ebp_available
2163     ebx_available
2164     gnu_as
2165     gnu_windres
2166     ibm_asm
2167     inline_asm_direct_symbol_refs
2168     inline_asm_labels
2169     inline_asm_nonlocal_labels
2170     pragma_deprecated
2171     rsync_contimeout
2172     symver_asm_label
2173     symver_gnu_asm
2174     vfp_args
2175     xform_asm
2176     xmm_clobbers
2177 "
2178
2179 TYPES_LIST="
2180     kCMVideoCodecType_HEVC
2181     socklen_t
2182     struct_addrinfo
2183     struct_group_source_req
2184     struct_ip_mreq_source
2185     struct_ipv6_mreq
2186     struct_msghdr_msg_flags
2187     struct_pollfd
2188     struct_rusage_ru_maxrss
2189     struct_sctp_event_subscribe
2190     struct_sockaddr_in6
2191     struct_sockaddr_sa_len
2192     struct_sockaddr_storage
2193     struct_stat_st_mtim_tv_nsec
2194     struct_v4l2_frmivalenum_discrete
2195 "
2196
2197 HAVE_LIST="
2198     $ARCH_EXT_LIST
2199     $(add_suffix _external $ARCH_EXT_LIST)
2200     $(add_suffix _inline   $ARCH_EXT_LIST)
2201     $ARCH_FEATURES
2202     $BUILTIN_LIST
2203     $COMPLEX_FUNCS
2204     $HAVE_LIST_CMDLINE
2205     $HAVE_LIST_PUB
2206     $HEADERS_LIST
2207     $INTRINSICS_LIST
2208     $MATH_FUNCS
2209     $SYSTEM_FEATURES
2210     $SYSTEM_FUNCS
2211     $SYSTEM_LIBRARIES
2212     $THREADS_LIST
2213     $TOOLCHAIN_FEATURES
2214     $TYPES_LIST
2215     makeinfo
2216     makeinfo_html
2217     opencl_d3d11
2218     opencl_drm_arm
2219     opencl_drm_beignet
2220     opencl_dxva2
2221     opencl_vaapi_beignet
2222     opencl_vaapi_intel_media
2223     perl
2224     pod2man
2225     texi2html
2226 "
2227
2228 # options emitted with CONFIG_ prefix but not available on the command line
2229 CONFIG_EXTRA="
2230     aandcttables
2231     ac3dsp
2232     adts_header
2233     audio_frame_queue
2234     audiodsp
2235     blockdsp
2236     bswapdsp
2237     cabac
2238     cbs
2239     cbs_h264
2240     cbs_h265
2241     cbs_mpeg2
2242     cbs_vp9
2243     dirac_parse
2244     dvprofile
2245     exif
2246     faandct
2247     faanidct
2248     fdctdsp
2249     flacdsp
2250     fmtconvert
2251     frame_thread_encoder
2252     g722dsp
2253     golomb
2254     gplv3
2255     h263dsp
2256     h264chroma
2257     h264dsp
2258     h264parse
2259     h264pred
2260     h264qpel
2261     hevcparse
2262     hpeldsp
2263     huffman
2264     huffyuvdsp
2265     huffyuvencdsp
2266     idctdsp
2267     iirfilter
2268     mdct15
2269     intrax8
2270     iso_media
2271     ividsp
2272     jpegtables
2273     lgplv3
2274     libx262
2275     llauddsp
2276     llviddsp
2277     llvidencdsp
2278     lpc
2279     lzf
2280     me_cmp
2281     mpeg_er
2282     mpegaudio
2283     mpegaudiodsp
2284     mpegaudioheader
2285     mpegvideo
2286     mpegvideoenc
2287     mss34dsp
2288     pixblockdsp
2289     qpeldsp
2290     qsv
2291     qsvdec
2292     qsvenc
2293     qsvvpp
2294     rangecoder
2295     riffdec
2296     riffenc
2297     rtpdec
2298     rtpenc_chain
2299     rv34dsp
2300     sinewin
2301     snappy
2302     srtp
2303     startcode
2304     texturedsp
2305     texturedspenc
2306     tpeldsp
2307     vaapi_1
2308     vaapi_encode
2309     vc1dsp
2310     videodsp
2311     vp3dsp
2312     vp56dsp
2313     vp8dsp
2314     wma_freqs
2315     wmv2dsp
2316 "
2317
2318 CMDLINE_SELECT="
2319     $ARCH_EXT_LIST
2320     $CONFIG_LIST
2321     $HAVE_LIST_CMDLINE
2322     $THREADS_LIST
2323     asm
2324     cross_compile
2325     debug
2326     extra_warnings
2327     logging
2328     lto
2329     optimizations
2330     rpath
2331     stripping
2332 "
2333
2334 PATHS_LIST="
2335     bindir
2336     datadir
2337     docdir
2338     incdir
2339     libdir
2340     mandir
2341     pkgconfigdir
2342     prefix
2343     shlibdir
2344     install_name_dir
2345 "
2346
2347 CMDLINE_SET="
2348     $PATHS_LIST
2349     ar
2350     arch
2351     as
2352     assert_level
2353     build_suffix
2354     cc
2355     objcc
2356     cpu
2357     cross_prefix
2358     custom_allocator
2359     cxx
2360     dep_cc
2361     doxygen
2362     env
2363     extra_version
2364     gas
2365     host_cc
2366     host_cflags
2367     host_extralibs
2368     host_ld
2369     host_ldflags
2370     host_os
2371     ignore_tests
2372     install
2373     ld
2374     ln_s
2375     logfile
2376     malloc_prefix
2377     nm
2378     optflags
2379     nvcc
2380     nvccflags
2381     pkg_config
2382     pkg_config_flags
2383     progs_suffix
2384     random_seed
2385     ranlib
2386     samples
2387     strip
2388     sws_max_filter_size
2389     sysinclude
2390     sysroot
2391     target_exec
2392     target_os
2393     target_path
2394     target_samples
2395     tempprefix
2396     toolchain
2397     valgrind
2398     x86asmexe
2399 "
2400
2401 CMDLINE_APPEND="
2402     extra_cflags
2403     extra_cxxflags
2404     extra_objcflags
2405     host_cppflags
2406 "
2407
2408 # code dependency declarations
2409
2410 # architecture extensions
2411
2412 armv5te_deps="arm"
2413 armv6_deps="arm"
2414 armv6t2_deps="arm"
2415 armv8_deps="aarch64"
2416 neon_deps_any="aarch64 arm"
2417 intrinsics_neon_deps="neon"
2418 vfp_deps_any="aarch64 arm"
2419 vfpv3_deps="vfp"
2420 setend_deps="arm"
2421
2422 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2423
2424 altivec_deps="ppc"
2425 dcbzl_deps="ppc"
2426 ldbrx_deps="ppc"
2427 ppc4xx_deps="ppc"
2428 vsx_deps="altivec"
2429 power8_deps="vsx"
2430
2431 loongson2_deps="mips"
2432 loongson3_deps="mips"
2433 mips32r2_deps="mips"
2434 mips32r5_deps="mips"
2435 mips32r6_deps="mips"
2436 mips64r2_deps="mips"
2437 mips64r6_deps="mips"
2438 mipsfpu_deps="mips"
2439 mipsdsp_deps="mips"
2440 mipsdspr2_deps="mips"
2441 mmi_deps="mips"
2442 msa_deps="mipsfpu"
2443
2444 cpunop_deps="i686"
2445 x86_64_select="i686"
2446 x86_64_suggest="fast_cmov"
2447
2448 amd3dnow_deps="mmx"
2449 amd3dnowext_deps="amd3dnow"
2450 i686_deps="x86"
2451 mmx_deps="x86"
2452 mmxext_deps="mmx"
2453 sse_deps="mmxext"
2454 sse2_deps="sse"
2455 sse3_deps="sse2"
2456 ssse3_deps="sse3"
2457 sse4_deps="ssse3"
2458 sse42_deps="sse4"
2459 aesni_deps="sse42"
2460 avx_deps="sse42"
2461 xop_deps="avx"
2462 fma3_deps="avx"
2463 fma4_deps="avx"
2464 avx2_deps="avx"
2465 avx512_deps="avx2"
2466
2467 mmx_external_deps="x86asm"
2468 mmx_inline_deps="inline_asm x86"
2469 mmx_suggest="mmx_external mmx_inline"
2470
2471 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2472     eval dep=\$${ext}_deps
2473     eval ${ext}_external_deps='"${dep}_external"'
2474     eval ${ext}_inline_deps='"${dep}_inline"'
2475     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2476 done
2477
2478 aligned_stack_if_any="aarch64 ppc x86"
2479 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2480 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2481 fast_unaligned_if_any="aarch64 ppc x86"
2482 simd_align_16_if_any="altivec neon sse"
2483 simd_align_32_if_any="avx"
2484 simd_align_64_if_any="avx512"
2485
2486 # system capabilities
2487 linux_perf_deps="linux_perf_event_h"
2488 symver_if_any="symver_asm_label symver_gnu_asm"
2489 valgrind_backtrace_conflict="optimizations"
2490 valgrind_backtrace_deps="valgrind_valgrind_h"
2491
2492 # threading support
2493 atomics_gcc_if="sync_val_compare_and_swap"
2494 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2495 atomics_win32_if="MemoryBarrier"
2496 atomics_native_if_any="$ATOMICS_LIST"
2497 w32threads_deps="atomics_native"
2498 threads_if_any="$THREADS_LIST"
2499
2500 # subsystems
2501 cbs_h264_select="cbs golomb"
2502 cbs_h265_select="cbs golomb"
2503 cbs_mpeg2_select="cbs"
2504 cbs_vp9_select="cbs"
2505 dct_select="rdft"
2506 dirac_parse_select="golomb"
2507 error_resilience_select="me_cmp"
2508 faandct_deps="faan"
2509 faandct_select="fdctdsp"
2510 faanidct_deps="faan"
2511 faanidct_select="idctdsp"
2512 h264dsp_select="startcode"
2513 hevcparse_select="golomb"
2514 frame_thread_encoder_deps="encoders threads"
2515 intrax8_select="blockdsp idctdsp"
2516 mdct_select="fft"
2517 mdct15_select="fft"
2518 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2519 mpeg_er_select="error_resilience"
2520 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2521 mpegaudiodsp_select="dct"
2522 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2523 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2524 vc1dsp_select="h264chroma qpeldsp startcode"
2525 rdft_select="fft"
2526
2527 # decoders / encoders
2528 aac_decoder_select="adts_header mdct15 mdct sinewin"
2529 aac_fixed_decoder_select="adts_header mdct sinewin"
2530 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2531 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2532 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2533 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2534 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2535 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2536 adpcm_g722_decoder_select="g722dsp"
2537 adpcm_g722_encoder_select="g722dsp"
2538 aic_decoder_select="golomb idctdsp"
2539 alac_encoder_select="lpc"
2540 als_decoder_select="bswapdsp"
2541 amrnb_decoder_select="lsp"
2542 amrwb_decoder_select="lsp"
2543 amv_decoder_select="sp5x_decoder exif"
2544 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2545 ape_decoder_select="bswapdsp llauddsp"
2546 apng_decoder_deps="zlib"
2547 apng_encoder_deps="zlib"
2548 apng_encoder_select="llvidencdsp"
2549 aptx_decoder_select="audio_frame_queue"
2550 aptx_encoder_select="audio_frame_queue"
2551 aptx_hd_decoder_select="audio_frame_queue"
2552 aptx_hd_encoder_select="audio_frame_queue"
2553 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2554 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2555 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2556 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2557 atrac1_decoder_select="mdct sinewin"
2558 atrac3_decoder_select="mdct"
2559 atrac3p_decoder_select="mdct sinewin"
2560 avrn_decoder_select="exif jpegtables"
2561 bink_decoder_select="blockdsp hpeldsp"
2562 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2563 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2564 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2565 clearvideo_decoder_select="idctdsp"
2566 cllc_decoder_select="bswapdsp"
2567 comfortnoise_encoder_select="lpc"
2568 cook_decoder_select="audiodsp mdct sinewin"
2569 cscd_decoder_select="lzo"
2570 cscd_decoder_suggest="zlib"
2571 dca_decoder_select="mdct"
2572 dds_decoder_select="texturedsp"
2573 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2574 dnxhd_decoder_select="blockdsp idctdsp"
2575 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2576 dolby_e_decoder_select="mdct"
2577 dvvideo_decoder_select="dvprofile idctdsp"
2578 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2579 dxa_decoder_deps="zlib"
2580 dxv_decoder_select="lzf texturedsp"
2581 eac3_decoder_select="ac3_decoder"
2582 eac3_encoder_select="ac3_encoder"
2583 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2584 eatgq_decoder_select="aandcttables"
2585 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2586 exr_decoder_deps="zlib"
2587 ffv1_decoder_select="rangecoder"
2588 ffv1_encoder_select="rangecoder"
2589 ffvhuff_decoder_select="huffyuv_decoder"
2590 ffvhuff_encoder_select="huffyuv_encoder"
2591 fic_decoder_select="golomb"
2592 flac_decoder_select="flacdsp"
2593 flac_encoder_select="bswapdsp flacdsp lpc"
2594 flashsv2_decoder_deps="zlib"
2595 flashsv2_encoder_deps="zlib"
2596 flashsv_decoder_deps="zlib"
2597 flashsv_encoder_deps="zlib"
2598 flv_decoder_select="h263_decoder"
2599 flv_encoder_select="h263_encoder"
2600 fourxm_decoder_select="blockdsp bswapdsp"
2601 fraps_decoder_select="bswapdsp huffman"
2602 g2m_decoder_deps="zlib"
2603 g2m_decoder_select="blockdsp idctdsp jpegtables"
2604 g729_decoder_select="audiodsp"
2605 h261_decoder_select="mpegvideo"
2606 h261_encoder_select="aandcttables mpegvideoenc"
2607 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2608 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2609 h263i_decoder_select="h263_decoder"
2610 h263p_decoder_select="h263_decoder"
2611 h263p_encoder_select="h263_encoder"
2612 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2613 h264_decoder_suggest="error_resilience"
2614 hap_decoder_select="snappy texturedsp"
2615 hap_encoder_deps="libsnappy"
2616 hap_encoder_select="texturedspenc"
2617 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2618 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2619 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2620 iac_decoder_select="imc_decoder"
2621 imc_decoder_select="bswapdsp fft mdct sinewin"
2622 indeo3_decoder_select="hpeldsp"
2623 indeo4_decoder_select="ividsp"
2624 indeo5_decoder_select="ividsp"
2625 interplay_video_decoder_select="hpeldsp"
2626 jpegls_decoder_select="mjpeg_decoder"
2627 jv_decoder_select="blockdsp"
2628 lagarith_decoder_select="llviddsp"
2629 ljpeg_encoder_select="aandcttables idctdsp jpegtables mpegvideoenc"
2630 magicyuv_decoder_select="llviddsp"
2631 magicyuv_encoder_select="llvidencdsp"
2632 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2633 metasound_decoder_select="lsp mdct sinewin"
2634 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2635 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2636 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2637 mjpegb_decoder_select="mjpeg_decoder"
2638 mlp_decoder_select="mlp_parser"
2639 mlp_encoder_select="lpc"
2640 motionpixels_decoder_select="bswapdsp"
2641 mp1_decoder_select="mpegaudio"
2642 mp1float_decoder_select="mpegaudio"
2643 mp2_decoder_select="mpegaudio"
2644 mp2float_decoder_select="mpegaudio"
2645 mp3_decoder_select="mpegaudio"
2646 mp3adu_decoder_select="mpegaudio"
2647 mp3adufloat_decoder_select="mpegaudio"
2648 mp3float_decoder_select="mpegaudio"
2649 mp3on4_decoder_select="mpegaudio"
2650 mp3on4float_decoder_select="mpegaudio"
2651 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2652 mpc8_decoder_select="mpegaudiodsp"
2653 mpegvideo_decoder_select="mpegvideo"
2654 mpeg1video_decoder_select="mpegvideo"
2655 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2656 mpeg2video_decoder_select="mpegvideo"
2657 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2658 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2659 mpeg4_encoder_select="h263_encoder"
2660 msa1_decoder_select="mss34dsp"
2661 mscc_decoder_deps="zlib"
2662 msmpeg4v1_decoder_select="h263_decoder"
2663 msmpeg4v2_decoder_select="h263_decoder"
2664 msmpeg4v2_encoder_select="h263_encoder"
2665 msmpeg4v3_decoder_select="h263_decoder"
2666 msmpeg4v3_encoder_select="h263_encoder"
2667 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2668 mts2_decoder_select="mss34dsp"
2669 mxpeg_decoder_select="mjpeg_decoder"
2670 nellymoser_decoder_select="mdct sinewin"
2671 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2672 nuv_decoder_select="idctdsp lzo"
2673 on2avc_decoder_select="mdct"
2674 opus_decoder_deps="swresample"
2675 opus_decoder_select="mdct15"
2676 opus_encoder_select="audio_frame_queue mdct15"
2677 png_decoder_deps="zlib"
2678 png_encoder_deps="zlib"
2679 png_encoder_select="llvidencdsp"
2680 prores_decoder_select="blockdsp idctdsp"
2681 prores_encoder_select="fdctdsp"
2682 qcelp_decoder_select="lsp"
2683 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2684 ra_144_decoder_select="audiodsp"
2685 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2686 ralf_decoder_select="golomb"
2687 rawvideo_decoder_select="bswapdsp"
2688 rscc_decoder_deps="zlib"
2689 rtjpeg_decoder_select="me_cmp"
2690 rv10_decoder_select="h263_decoder"
2691 rv10_encoder_select="h263_encoder"
2692 rv20_decoder_select="h263_decoder"
2693 rv20_encoder_select="h263_encoder"
2694 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2695 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2696 screenpresso_decoder_deps="zlib"
2697 shorten_decoder_select="bswapdsp"
2698 sipr_decoder_select="lsp"
2699 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2700 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2701 sonic_decoder_select="golomb rangecoder"
2702 sonic_encoder_select="golomb rangecoder"
2703 sonic_ls_encoder_select="golomb rangecoder"
2704 sp5x_decoder_select="mjpeg_decoder"
2705 srgc_decoder_deps="zlib"
2706 svq1_decoder_select="hpeldsp"
2707 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2708 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2709 svq3_decoder_suggest="zlib"
2710 tak_decoder_select="audiodsp"
2711 tdsc_decoder_deps="zlib"
2712 tdsc_decoder_select="mjpeg_decoder"
2713 theora_decoder_select="vp3_decoder"
2714 thp_decoder_select="mjpeg_decoder"
2715 tiff_decoder_suggest="zlib lzma"
2716 tiff_encoder_suggest="zlib"
2717 truehd_decoder_select="mlp_parser"
2718 truehd_encoder_select="lpc"
2719 truemotion2_decoder_select="bswapdsp"
2720 truespeech_decoder_select="bswapdsp"
2721 tscc_decoder_deps="zlib"
2722 twinvq_decoder_select="mdct lsp sinewin"
2723 txd_decoder_select="texturedsp"
2724 utvideo_decoder_select="bswapdsp llviddsp"
2725 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2726 vble_decoder_select="llviddsp"
2727 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2728 vc1image_decoder_select="vc1_decoder"
2729 vorbis_decoder_select="mdct"
2730 vorbis_encoder_select="audio_frame_queue mdct"
2731 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2732 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2733 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2734 vp6a_decoder_select="vp6_decoder"
2735 vp6f_decoder_select="vp6_decoder"
2736 vp7_decoder_select="h264pred videodsp vp8dsp"
2737 vp8_decoder_select="h264pred videodsp vp8dsp"
2738 vp9_decoder_select="videodsp vp9_parser vp9_superframe_split_bsf"
2739 webp_decoder_select="vp8_decoder exif"
2740 wmalossless_decoder_select="llauddsp"
2741 wmapro_decoder_select="mdct sinewin wma_freqs"
2742 wmav1_decoder_select="mdct sinewin wma_freqs"
2743 wmav1_encoder_select="mdct sinewin wma_freqs"
2744 wmav2_decoder_select="mdct sinewin wma_freqs"
2745 wmav2_encoder_select="mdct sinewin wma_freqs"
2746 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2747 wmv1_decoder_select="h263_decoder"
2748 wmv1_encoder_select="h263_encoder"
2749 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2750 wmv2_encoder_select="h263_encoder wmv2dsp"
2751 wmv3_decoder_select="vc1_decoder"
2752 wmv3image_decoder_select="wmv3_decoder"
2753 xma1_decoder_select="wmapro_decoder"
2754 xma2_decoder_select="wmapro_decoder"
2755 zerocodec_decoder_deps="zlib"
2756 zlib_decoder_deps="zlib"
2757 zlib_encoder_deps="zlib"
2758 zmbv_decoder_deps="zlib"
2759 zmbv_encoder_deps="zlib"
2760
2761 # hardware accelerators
2762 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2763 cuda_deps="ffnvcodec"
2764 cuvid_deps="ffnvcodec"
2765 d3d11va_deps="dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2766 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32 user32"
2767 ffnvcodec_deps_any="libdl LoadLibrary"
2768 nvdec_deps="ffnvcodec"
2769 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2770 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2771 xvmc_deps="X11_extensions_XvMClib_h"
2772
2773 h263_vaapi_hwaccel_deps="vaapi"
2774 h263_vaapi_hwaccel_select="h263_decoder"
2775 h263_videotoolbox_hwaccel_deps="videotoolbox"
2776 h263_videotoolbox_hwaccel_select="h263_decoder"
2777 h264_d3d11va_hwaccel_deps="d3d11va"
2778 h264_d3d11va_hwaccel_select="h264_decoder"
2779 h264_d3d11va2_hwaccel_deps="d3d11va"
2780 h264_d3d11va2_hwaccel_select="h264_decoder"
2781 h264_dxva2_hwaccel_deps="dxva2"
2782 h264_dxva2_hwaccel_select="h264_decoder"
2783 h264_nvdec_hwaccel_deps="nvdec"
2784 h264_nvdec_hwaccel_select="h264_decoder"
2785 h264_vaapi_hwaccel_deps="vaapi"
2786 h264_vaapi_hwaccel_select="h264_decoder"
2787 h264_vdpau_hwaccel_deps="vdpau"
2788 h264_vdpau_hwaccel_select="h264_decoder"
2789 h264_videotoolbox_hwaccel_deps="videotoolbox"
2790 h264_videotoolbox_hwaccel_select="h264_decoder"
2791 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2792 hevc_d3d11va_hwaccel_select="hevc_decoder"
2793 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2794 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2795 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2796 hevc_dxva2_hwaccel_select="hevc_decoder"
2797 hevc_nvdec_hwaccel_deps="nvdec"
2798 hevc_nvdec_hwaccel_select="hevc_decoder"
2799 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2800 hevc_vaapi_hwaccel_select="hevc_decoder"
2801 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2802 hevc_vdpau_hwaccel_select="hevc_decoder"
2803 hevc_videotoolbox_hwaccel_deps="videotoolbox"
2804 hevc_videotoolbox_hwaccel_select="hevc_decoder"
2805 mjpeg_nvdec_hwaccel_deps="nvdec"
2806 mjpeg_nvdec_hwaccel_select="mjpeg_decoder"
2807 mjpeg_vaapi_hwaccel_deps="vaapi"
2808 mjpeg_vaapi_hwaccel_select="mjpeg_decoder"
2809 mpeg_xvmc_hwaccel_deps="xvmc"
2810 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2811 mpeg1_nvdec_hwaccel_deps="nvdec"
2812 mpeg1_nvdec_hwaccel_select="mpeg1video_decoder"
2813 mpeg1_vdpau_hwaccel_deps="vdpau"
2814 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2815 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2816 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2817 mpeg1_xvmc_hwaccel_deps="xvmc"
2818 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2819 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2820 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2821 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2822 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2823 mpeg2_dxva2_hwaccel_deps="dxva2"
2824 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2825 mpeg2_nvdec_hwaccel_deps="nvdec"
2826 mpeg2_nvdec_hwaccel_select="mpeg2video_decoder"
2827 mpeg2_vaapi_hwaccel_deps="vaapi"
2828 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2829 mpeg2_vdpau_hwaccel_deps="vdpau"
2830 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2831 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2832 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2833 mpeg2_xvmc_hwaccel_deps="xvmc"
2834 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2835 mpeg4_nvdec_hwaccel_deps="nvdec"
2836 mpeg4_nvdec_hwaccel_select="mpeg4_decoder"
2837 mpeg4_vaapi_hwaccel_deps="vaapi"
2838 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2839 mpeg4_vdpau_hwaccel_deps="vdpau"
2840 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2841 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2842 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2843 vc1_d3d11va_hwaccel_deps="d3d11va"
2844 vc1_d3d11va_hwaccel_select="vc1_decoder"
2845 vc1_d3d11va2_hwaccel_deps="d3d11va"
2846 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2847 vc1_dxva2_hwaccel_deps="dxva2"
2848 vc1_dxva2_hwaccel_select="vc1_decoder"
2849 vc1_nvdec_hwaccel_deps="nvdec"
2850 vc1_nvdec_hwaccel_select="vc1_decoder"
2851 vc1_vaapi_hwaccel_deps="vaapi"
2852 vc1_vaapi_hwaccel_select="vc1_decoder"
2853 vc1_vdpau_hwaccel_deps="vdpau"
2854 vc1_vdpau_hwaccel_select="vc1_decoder"
2855 vp8_nvdec_hwaccel_deps="nvdec"
2856 vp8_nvdec_hwaccel_select="vp8_decoder"
2857 vp8_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferVP8"
2858 vp8_vaapi_hwaccel_select="vp8_decoder"
2859 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2860 vp9_d3d11va_hwaccel_select="vp9_decoder"
2861 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2862 vp9_d3d11va2_hwaccel_select="vp9_decoder"
2863 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2864 vp9_dxva2_hwaccel_select="vp9_decoder"
2865 vp9_nvdec_hwaccel_deps="nvdec"
2866 vp9_nvdec_hwaccel_select="vp9_decoder"
2867 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2868 vp9_vaapi_hwaccel_select="vp9_decoder"
2869 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2870 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2871 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2872 wmv3_nvdec_hwaccel_select="vc1_nvdec_hwaccel"
2873 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2874 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2875
2876 # hardware-accelerated codecs
2877 omx_deps="libdl pthreads"
2878 omx_rpi_select="omx"
2879 qsv_deps="libmfx"
2880 qsvdec_select="qsv"
2881 qsvenc_select="qsv"
2882 qsvvpp_select="qsv"
2883 vaapi_encode_deps="vaapi"
2884 v4l2_m2m_deps="linux_videodev2_h sem_timedwait"
2885
2886 hwupload_cuda_filter_deps="ffnvcodec"
2887 scale_npp_filter_deps="ffnvcodec libnpp"
2888 scale_cuda_filter_deps="cuda_sdk"
2889 thumbnail_cuda_filter_deps="cuda_sdk"
2890
2891 amf_deps_any="libdl LoadLibrary"
2892 nvenc_deps="ffnvcodec"
2893 nvenc_deps_any="libdl LoadLibrary"
2894 nvenc_encoder_deps="nvenc"
2895
2896 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
2897 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
2898 h264_amf_encoder_deps="amf"
2899 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2900 h264_cuvid_decoder_deps="cuvid"
2901 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2902 h264_mediacodec_decoder_deps="mediacodec"
2903 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2904 h264_mmal_decoder_deps="mmal"
2905 h264_nvenc_encoder_deps="nvenc"
2906 h264_omx_encoder_deps="omx"
2907 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec"
2908 h264_qsv_encoder_select="qsvenc"
2909 h264_rkmpp_decoder_deps="rkmpp"
2910 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
2911 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2912 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
2913 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
2914 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
2915 hevc_amf_encoder_deps="amf"
2916 hevc_cuvid_decoder_deps="cuvid"
2917 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
2918 hevc_mediacodec_decoder_deps="mediacodec"
2919 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2920 hevc_nvenc_encoder_deps="nvenc"
2921 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec"
2922 hevc_qsv_encoder_select="hevcparse qsvenc"
2923 hevc_rkmpp_decoder_deps="rkmpp"
2924 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
2925 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2926 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
2927 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
2928 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
2929 mjpeg_cuvid_decoder_deps="cuvid"
2930 mjpeg_qsv_encoder_deps="libmfx"
2931 mjpeg_qsv_encoder_select="qsvenc"
2932 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2933 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2934 mpeg1_cuvid_decoder_deps="cuvid"
2935 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
2936 mpeg2_crystalhd_decoder_select="crystalhd"
2937 mpeg2_cuvid_decoder_deps="cuvid"
2938 mpeg2_mmal_decoder_deps="mmal"
2939 mpeg2_mediacodec_decoder_deps="mediacodec"
2940 mpeg2_qsv_decoder_select="qsvdec mpegvideo_parser"
2941 mpeg2_qsv_encoder_select="qsvenc"
2942 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2943 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
2944 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
2945 mpeg4_crystalhd_decoder_select="crystalhd"
2946 mpeg4_cuvid_decoder_deps="cuvid"
2947 mpeg4_mediacodec_decoder_deps="mediacodec"
2948 mpeg4_mmal_decoder_deps="mmal"
2949 mpeg4_omx_encoder_deps="omx"
2950 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2951 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2952 msmpeg4_crystalhd_decoder_select="crystalhd"
2953 nvenc_h264_encoder_select="h264_nvenc_encoder"
2954 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2955 vc1_crystalhd_decoder_select="crystalhd"
2956 vc1_cuvid_decoder_deps="cuvid"
2957 vc1_mmal_decoder_deps="mmal"
2958 vc1_qsv_decoder_select="qsvdec vc1_parser"
2959 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
2960 vp8_cuvid_decoder_deps="cuvid"
2961 vp8_mediacodec_decoder_deps="mediacodec"
2962 vp8_qsv_decoder_select="qsvdec vp8_parser"
2963 vp8_rkmpp_decoder_deps="rkmpp"
2964 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2965 vp8_vaapi_encoder_select="vaapi_encode"
2966 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
2967 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
2968 vp9_cuvid_decoder_deps="cuvid"
2969 vp9_mediacodec_decoder_deps="mediacodec"
2970 vp9_rkmpp_decoder_deps="rkmpp"
2971 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
2972 vp9_vaapi_encoder_select="vaapi_encode"
2973 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
2974 wmv3_crystalhd_decoder_select="crystalhd"
2975
2976 # parsers
2977 aac_parser_select="adts_header"
2978 h264_parser_select="golomb h264dsp h264parse"
2979 hevc_parser_select="hevcparse"
2980 mpegaudio_parser_select="mpegaudioheader"
2981 mpegvideo_parser_select="mpegvideo"
2982 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2983 vc1_parser_select="vc1dsp"
2984
2985 # bitstream_filters
2986 aac_adtstoasc_bsf_select="adts_header"
2987 filter_units_bsf_select="cbs"
2988 h264_metadata_bsf_deps="const_nan"
2989 h264_metadata_bsf_select="cbs_h264"
2990 h264_redundant_pps_bsf_select="cbs_h264"
2991 hevc_metadata_bsf_select="cbs_h265"
2992 mjpeg2jpeg_bsf_select="jpegtables"
2993 mpeg2_metadata_bsf_select="cbs_mpeg2"
2994 trace_headers_bsf_select="cbs"
2995 vp9_metadata_bsf_select="cbs_vp9"
2996
2997 # external libraries
2998 aac_at_decoder_deps="audiotoolbox"
2999 aac_at_decoder_select="aac_adtstoasc_bsf"
3000 ac3_at_decoder_deps="audiotoolbox"
3001 ac3_at_decoder_select="ac3_parser"
3002 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
3003 alac_at_decoder_deps="audiotoolbox"
3004 amr_nb_at_decoder_deps="audiotoolbox"
3005 avisynth_deps_any="libdl LoadLibrary"
3006 avisynth_demuxer_deps="avisynth"
3007 avisynth_demuxer_select="riffdec"
3008 eac3_at_decoder_deps="audiotoolbox"
3009 eac3_at_decoder_select="ac3_parser"
3010 gsm_ms_at_decoder_deps="audiotoolbox"
3011 ilbc_at_decoder_deps="audiotoolbox"
3012 mp1_at_decoder_deps="audiotoolbox"
3013 mp2_at_decoder_deps="audiotoolbox"
3014 mp3_at_decoder_deps="audiotoolbox"
3015 mp1_at_decoder_select="mpegaudioheader"
3016 mp2_at_decoder_select="mpegaudioheader"
3017 mp3_at_decoder_select="mpegaudioheader"
3018 pcm_alaw_at_decoder_deps="audiotoolbox"
3019 pcm_mulaw_at_decoder_deps="audiotoolbox"
3020 qdmc_at_decoder_deps="audiotoolbox"
3021 qdm2_at_decoder_deps="audiotoolbox"
3022 aac_at_encoder_deps="audiotoolbox"
3023 aac_at_encoder_select="audio_frame_queue"
3024 alac_at_encoder_deps="audiotoolbox"
3025 alac_at_encoder_select="audio_frame_queue"
3026 ilbc_at_encoder_deps="audiotoolbox"
3027 ilbc_at_encoder_select="audio_frame_queue"
3028 pcm_alaw_at_encoder_deps="audiotoolbox"
3029 pcm_alaw_at_encoder_select="audio_frame_queue"
3030 pcm_mulaw_at_encoder_deps="audiotoolbox"
3031 pcm_mulaw_at_encoder_select="audio_frame_queue"
3032 chromaprint_muxer_deps="chromaprint"
3033 h264_videotoolbox_encoder_deps="pthreads"
3034 h264_videotoolbox_encoder_select="videotoolbox_encoder"
3035 hevc_videotoolbox_encoder_deps="pthreads"
3036 hevc_videotoolbox_encoder_select="videotoolbox_encoder"
3037 libaom_av1_decoder_deps="libaom"
3038 libaom_av1_encoder_deps="libaom"
3039 libcelt_decoder_deps="libcelt"
3040 libcodec2_decoder_deps="libcodec2"
3041 libcodec2_encoder_deps="libcodec2"
3042 libfdk_aac_decoder_deps="libfdk_aac"
3043 libfdk_aac_encoder_deps="libfdk_aac"
3044 libfdk_aac_encoder_select="audio_frame_queue"
3045 libgme_demuxer_deps="libgme"
3046 libgsm_decoder_deps="libgsm"
3047 libgsm_encoder_deps="libgsm"
3048 libgsm_ms_decoder_deps="libgsm"
3049 libgsm_ms_encoder_deps="libgsm"
3050 libilbc_decoder_deps="libilbc"
3051 libilbc_encoder_deps="libilbc"
3052 libkvazaar_encoder_deps="libkvazaar"
3053 libmodplug_demuxer_deps="libmodplug"
3054 libmp3lame_encoder_deps="libmp3lame"
3055 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
3056 libopencore_amrnb_decoder_deps="libopencore_amrnb"
3057 libopencore_amrnb_encoder_deps="libopencore_amrnb"
3058 libopencore_amrnb_encoder_select="audio_frame_queue"
3059 libopencore_amrwb_decoder_deps="libopencore_amrwb"
3060 libopenh264_decoder_deps="libopenh264"
3061 libopenh264_decoder_select="h264_mp4toannexb_bsf"
3062 libopenh264_encoder_deps="libopenh264"
3063 libopenjpeg_decoder_deps="libopenjpeg"
3064 libopenjpeg_encoder_deps="libopenjpeg"
3065 libopenmpt_demuxer_deps="libopenmpt"
3066 libopus_decoder_deps="libopus"
3067 libopus_encoder_deps="libopus"
3068 libopus_encoder_select="audio_frame_queue"
3069 librsvg_decoder_deps="librsvg"
3070 libshine_encoder_deps="libshine"
3071 libshine_encoder_select="audio_frame_queue"
3072 libspeex_decoder_deps="libspeex"
3073 libspeex_encoder_deps="libspeex"
3074 libspeex_encoder_select="audio_frame_queue"
3075 libtheora_encoder_deps="libtheora"
3076 libtwolame_encoder_deps="libtwolame"
3077 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
3078 libvorbis_decoder_deps="libvorbis"
3079 libvorbis_encoder_deps="libvorbis libvorbisenc"
3080 libvorbis_encoder_select="audio_frame_queue"
3081 libvpx_vp8_decoder_deps="libvpx"
3082 libvpx_vp8_encoder_deps="libvpx"
3083 libvpx_vp9_decoder_deps="libvpx"
3084 libvpx_vp9_encoder_deps="libvpx"
3085 libwavpack_encoder_deps="libwavpack"
3086 libwavpack_encoder_select="audio_frame_queue"
3087 libwebp_encoder_deps="libwebp"
3088 libwebp_anim_encoder_deps="libwebp"
3089 libx262_encoder_deps="libx262"
3090 libx264_encoder_deps="libx264"
3091 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
3092 libx264rgb_encoder_select="libx264_encoder"
3093 libx265_encoder_deps="libx265"
3094 libxavs_encoder_deps="libxavs"
3095 libxvid_encoder_deps="libxvid"
3096 libzvbi_teletext_decoder_deps="libzvbi"
3097 vapoursynth_demuxer_deps="vapoursynth"
3098 videotoolbox_suggest="coreservices"
3099 videotoolbox_deps="corefoundation coremedia corevideo"
3100 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
3101
3102 # demuxers / muxers
3103 ac3_demuxer_select="ac3_parser"
3104 aiff_muxer_select="iso_media"
3105 asf_demuxer_select="riffdec"
3106 asf_o_demuxer_select="riffdec"
3107 asf_muxer_select="riffenc"
3108 asf_stream_muxer_select="asf_muxer"
3109 avi_demuxer_select="iso_media riffdec exif"
3110 avi_muxer_select="riffenc"
3111 caf_demuxer_select="iso_media riffdec"
3112 caf_muxer_select="iso_media"
3113 dash_muxer_select="mp4_muxer"
3114 dash_demuxer_deps="libxml2"
3115 dirac_demuxer_select="dirac_parser"
3116 dts_demuxer_select="dca_parser"
3117 dtshd_demuxer_select="dca_parser"
3118 dv_demuxer_select="dvprofile"
3119 dv_muxer_select="dvprofile"
3120 dxa_demuxer_select="riffdec"
3121 eac3_demuxer_select="ac3_parser"
3122 f4v_muxer_select="mov_muxer"
3123 fifo_muxer_deps="threads"
3124 flac_demuxer_select="flac_parser"
3125 hds_muxer_select="flv_muxer"
3126 hls_muxer_select="mpegts_muxer"
3127 hls_muxer_suggest="gcrypt openssl"
3128 image2_alias_pix_demuxer_select="image2_demuxer"
3129 image2_brender_pix_demuxer_select="image2_demuxer"
3130 ipod_muxer_select="mov_muxer"
3131 ismv_muxer_select="mov_muxer"
3132 matroska_audio_muxer_select="matroska_muxer"
3133 matroska_demuxer_select="iso_media riffdec"
3134 matroska_demuxer_suggest="bzlib lzo zlib"
3135 matroska_muxer_select="iso_media riffenc"
3136 mmf_muxer_select="riffenc"
3137 mov_demuxer_select="iso_media riffdec"
3138 mov_demuxer_suggest="zlib"
3139 mov_muxer_select="iso_media riffenc rtpenc_chain"
3140 mp3_demuxer_select="mpegaudio_parser"
3141 mp3_muxer_select="mpegaudioheader"
3142 mp4_muxer_select="mov_muxer"
3143 mpegts_demuxer_select="iso_media"
3144 mpegts_muxer_select="adts_muxer latm_muxer"
3145 mpegtsraw_demuxer_select="mpegts_demuxer"
3146 mxf_d10_muxer_select="mxf_muxer"
3147 mxf_opatom_muxer_select="mxf_muxer"
3148 nut_muxer_select="riffenc"
3149 nuv_demuxer_select="riffdec"
3150 oga_muxer_select="ogg_muxer"
3151 ogg_demuxer_select="dirac_parse"
3152 ogv_muxer_select="ogg_muxer"
3153 opus_muxer_select="ogg_muxer"
3154 psp_muxer_select="mov_muxer"
3155 rtp_demuxer_select="sdp_demuxer"
3156 rtp_muxer_select="golomb"
3157 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3158 rtsp_demuxer_select="http_protocol rtpdec"
3159 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3160 sap_demuxer_select="sdp_demuxer"
3161 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3162 sdp_demuxer_select="rtpdec"
3163 smoothstreaming_muxer_select="ismv_muxer"
3164 spdif_demuxer_select="adts_header"
3165 spdif_muxer_select="adts_header"
3166 spx_muxer_select="ogg_muxer"
3167 swf_demuxer_suggest="zlib"
3168 tak_demuxer_select="tak_parser"
3169 tg2_muxer_select="mov_muxer"
3170 tgp_muxer_select="mov_muxer"
3171 vobsub_demuxer_select="mpegps_demuxer"
3172 w64_demuxer_select="wav_demuxer"
3173 w64_muxer_select="wav_muxer"
3174 wav_demuxer_select="riffdec"
3175 wav_muxer_select="riffenc"
3176 webm_muxer_select="iso_media riffenc"
3177 webm_dash_manifest_demuxer_select="matroska_demuxer"
3178 wtv_demuxer_select="mpegts_demuxer riffdec"
3179 wtv_muxer_select="mpegts_muxer riffenc"
3180 xmv_demuxer_select="riffdec"
3181 xwma_demuxer_select="riffdec"
3182
3183 # indevs / outdevs
3184 android_camera_indev_deps="android camera2ndk mediandk pthreads"
3185 android_camera_indev_extralibs="-landroid -lcamera2ndk -lmediandk"
3186 alsa_indev_deps="alsa"
3187 alsa_outdev_deps="alsa"
3188 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3189 avfoundation_indev_suggest="coregraphics applicationservices"
3190 avfoundation_indev_extralibs="-framework Foundation"
3191 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3192 caca_outdev_deps="libcaca"
3193 decklink_deps_any="libdl LoadLibrary"
3194 decklink_indev_deps="decklink threads"
3195 decklink_indev_extralibs="-lstdc++"
3196 decklink_outdev_deps="decklink threads"
3197 decklink_outdev_extralibs="-lstdc++"
3198 libndi_newtek_indev_deps="libndi_newtek"
3199 libndi_newtek_indev_extralibs="-lndi"
3200 libndi_newtek_outdev_deps="libndi_newtek"
3201 libndi_newtek_outdev_extralibs="-lndi"
3202 dshow_indev_deps="IBaseFilter"
3203 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3204 fbdev_indev_deps="linux_fb_h"
3205 fbdev_outdev_deps="linux_fb_h"
3206 gdigrab_indev_deps="CreateDIBSection"
3207 gdigrab_indev_extralibs="-lgdi32"
3208 gdigrab_indev_select="bmp_decoder"
3209 iec61883_indev_deps="libiec61883"
3210 jack_indev_deps="libjack"
3211 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3212 kmsgrab_indev_deps="libdrm"
3213 lavfi_indev_deps="avfilter"
3214 libcdio_indev_deps="libcdio"
3215 libdc1394_indev_deps="libdc1394"
3216 openal_indev_deps="openal"
3217 opengl_outdev_deps="opengl"
3218 oss_indev_deps_any="sys_soundcard_h"
3219 oss_outdev_deps_any="sys_soundcard_h"
3220 pulse_indev_deps="libpulse"
3221 pulse_outdev_deps="libpulse"
3222 sdl2_outdev_deps="sdl2"
3223 sndio_indev_deps="sndio"
3224 sndio_outdev_deps="sndio"
3225 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3226 v4l2_indev_suggest="libv4l2"
3227 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3228 v4l2_outdev_suggest="libv4l2"
3229 vfwcap_indev_deps="vfw32 vfwcap_defines"
3230 xcbgrab_indev_deps="libxcb"
3231 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3232 xv_outdev_deps="xlib"
3233
3234 # protocols
3235 async_protocol_deps="threads"
3236 bluray_protocol_deps="libbluray"
3237 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3238 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
3239 ffrtmpcrypt_protocol_select="tcp_protocol"
3240 ffrtmphttp_protocol_conflict="librtmp_protocol"
3241 ffrtmphttp_protocol_select="http_protocol"
3242 ftp_protocol_select="tcp_protocol"
3243 gopher_protocol_select="network"
3244 http_protocol_select="tcp_protocol"
3245 http_protocol_suggest="zlib"
3246 httpproxy_protocol_select="tcp_protocol"
3247 httpproxy_protocol_suggest="zlib"
3248 https_protocol_select="tls_protocol"
3249 https_protocol_suggest="zlib"
3250 icecast_protocol_select="http_protocol"
3251 librtmp_protocol_deps="librtmp"
3252 librtmpe_protocol_deps="librtmp"
3253 librtmps_protocol_deps="librtmp"
3254 librtmpt_protocol_deps="librtmp"
3255 librtmpte_protocol_deps="librtmp"
3256 libsmbclient_protocol_deps="libsmbclient gplv3"
3257 libssh_protocol_deps="libssh"
3258 libtls_conflict="openssl gnutls"
3259 mmsh_protocol_select="http_protocol"
3260 mmst_protocol_select="network"
3261 libsrt_protocol_deps="libsrt"
3262 libsrt_protocol_select="network"
3263 rtmp_protocol_conflict="librtmp_protocol"
3264 rtmp_protocol_select="tcp_protocol"
3265 rtmp_protocol_suggest="zlib"
3266 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3267 rtmpe_protocol_suggest="zlib"
3268 rtmps_protocol_conflict="librtmp_protocol"
3269 rtmps_protocol_select="tls_protocol"
3270 rtmps_protocol_suggest="zlib"
3271 rtmpt_protocol_select="ffrtmphttp_protocol"
3272 rtmpt_protocol_suggest="zlib"
3273 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3274 rtmpte_protocol_suggest="zlib"
3275 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3276 rtmpts_protocol_suggest="zlib"
3277 rtp_protocol_select="udp_protocol"
3278 schannel_conflict="openssl gnutls libtls"
3279 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3280 sctp_protocol_select="network"
3281 securetransport_conflict="openssl gnutls libtls"
3282 srtp_protocol_select="rtp_protocol srtp"
3283 tcp_protocol_select="network"
3284 tls_protocol_deps_any="gnutls openssl schannel securetransport libtls"
3285 tls_protocol_select="tcp_protocol"
3286 udp_protocol_select="network"
3287 udplite_protocol_select="network"
3288 unix_protocol_deps="sys_un_h"
3289 unix_protocol_select="network"
3290
3291 # filters
3292 afftfilt_filter_deps="avcodec"
3293 afftfilt_filter_select="fft"
3294 afir_filter_deps="avcodec"
3295 afir_filter_select="fft"
3296 amovie_filter_deps="avcodec avformat"
3297 aresample_filter_deps="swresample"
3298 ass_filter_deps="libass"
3299 atempo_filter_deps="avcodec"
3300 atempo_filter_select="rdft"
3301 avgblur_opencl_filter_deps="opencl"
3302 azmq_filter_deps="libzmq"
3303 blackframe_filter_deps="gpl"
3304 boxblur_filter_deps="gpl"
3305 bs2b_filter_deps="libbs2b"
3306 colormatrix_filter_deps="gpl"
3307 convolution_opencl_filter_deps="opencl"
3308 convolve_filter_deps="avcodec"
3309 convolve_filter_select="fft"
3310 coreimage_filter_deps="coreimage appkit"
3311 coreimage_filter_extralibs="-framework OpenGL"
3312 coreimagesrc_filter_deps="coreimage appkit"
3313 coreimagesrc_filter_extralibs="-framework OpenGL"
3314 cover_rect_filter_deps="avcodec avformat gpl"
3315 cropdetect_filter_deps="gpl"
3316 deconvolve_filter_deps="avcodec"
3317 deconvolve_filter_select="fft"
3318 deinterlace_qsv_filter_deps="libmfx"
3319 deinterlace_vaapi_filter_deps="vaapi"
3320 delogo_filter_deps="gpl"
3321 denoise_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3322 deshake_filter_select="pixelutils"
3323 drawtext_filter_deps="libfreetype"
3324 drawtext_filter_suggest="libfontconfig libfribidi"
3325 elbg_filter_deps="avcodec"
3326 eq_filter_deps="gpl"
3327 fftfilt_filter_deps="avcodec"
3328 fftfilt_filter_select="rdft"
3329 fftdnoiz_filter_deps="avcodec"
3330 fftdnoiz_filter_select="fft"
3331 find_rect_filter_deps="avcodec avformat gpl"
3332 firequalizer_filter_deps="avcodec"
3333 firequalizer_filter_select="rdft"
3334 flite_filter_deps="libflite"
3335 framerate_filter_select="pixelutils"
3336 frei0r_filter_deps="frei0r libdl"
3337 frei0r_src_filter_deps="frei0r libdl"
3338 fspp_filter_deps="gpl"
3339 geq_filter_deps="gpl"
3340 histeq_filter_deps="gpl"
3341 hqdn3d_filter_deps="gpl"
3342 interlace_filter_deps="gpl"
3343 kerndeint_filter_deps="gpl"
3344 ladspa_filter_deps="ladspa libdl"
3345 lv2_filter_deps="lv2"
3346 mcdeint_filter_deps="avcodec gpl"
3347 movie_filter_deps="avcodec avformat"
3348 mpdecimate_filter_deps="gpl"
3349 mpdecimate_filter_select="pixelutils"
3350 mptestsrc_filter_deps="gpl"
3351 negate_filter_deps="lut_filter"
3352 nnedi_filter_deps="gpl"
3353 ocr_filter_deps="libtesseract"
3354 ocv_filter_deps="libopencv"
3355 openclsrc_filter_deps="opencl"
3356 overlay_opencl_filter_deps="opencl"
3357 overlay_qsv_filter_deps="libmfx"
3358 overlay_qsv_filter_select="qsvvpp"
3359 owdenoise_filter_deps="gpl"
3360 pan_filter_deps="swresample"
3361 perspective_filter_deps="gpl"
3362 phase_filter_deps="gpl"
3363 pp7_filter_deps="gpl"
3364 pp_filter_deps="gpl postproc"
3365 procamp_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3366 program_opencl_filter_deps="opencl"
3367 pullup_filter_deps="gpl"
3368 removelogo_filter_deps="avcodec avformat swscale"
3369 repeatfields_filter_deps="gpl"
3370 resample_filter_deps="avresample"
3371 rubberband_filter_deps="librubberband"
3372 sab_filter_deps="gpl swscale"
3373 scale2ref_filter_deps="swscale"
3374 scale_filter_deps="swscale"
3375 scale_qsv_filter_deps="libmfx"
3376 select_filter_select="pixelutils"
3377 sharpness_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3378 showcqt_filter_deps="avcodec avformat swscale"
3379 showcqt_filter_suggest="libfontconfig libfreetype"
3380 showcqt_filter_select="fft"
3381 showfreqs_filter_deps="avcodec"
3382 showfreqs_filter_select="fft"
3383 showspectrum_filter_deps="avcodec"
3384 showspectrum_filter_select="fft"
3385 showspectrumpic_filter_deps="avcodec"
3386 showspectrumpic_filter_select="fft"
3387 signature_filter_deps="gpl avcodec avformat"
3388 smartblur_filter_deps="gpl swscale"
3389 sofalizer_filter_deps="libmysofa avcodec"
3390 sofalizer_filter_select="fft"
3391 spectrumsynth_filter_deps="avcodec"
3392 spectrumsynth_filter_select="fft"
3393 spp_filter_deps="gpl avcodec"
3394 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3395 srcnn_filter_deps="avformat"
3396 stereo3d_filter_deps="gpl"
3397 subtitles_filter_deps="avformat avcodec libass"
3398 super2xsai_filter_deps="gpl"
3399 pixfmts_super2xsai_test_deps="super2xsai_filter"
3400 tinterlace_filter_deps="gpl"
3401 tinterlace_merge_test_deps="tinterlace_filter"
3402 tinterlace_pad_test_deps="tinterlace_filter"
3403 tonemap_filter_deps="const_nan"
3404 unsharp_opencl_filter_deps="opencl"
3405 uspp_filter_deps="gpl avcodec"
3406 vaguedenoiser_filter_deps="gpl"
3407 vidstabdetect_filter_deps="libvidstab"
3408 vidstabtransform_filter_deps="libvidstab"
3409 libvmaf_filter_deps="libvmaf pthreads"
3410 zmq_filter_deps="libzmq"
3411 zoompan_filter_deps="swscale"
3412 zscale_filter_deps="libzimg const_nan"
3413 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3414 vpp_qsv_filter_deps="libmfx"
3415 vpp_qsv_filter_select="qsvvpp"
3416
3417 # examples
3418 avio_dir_cmd_deps="avformat avutil"
3419 avio_reading_deps="avformat avcodec avutil"
3420 decode_audio_example_deps="avcodec avutil"
3421 decode_video_example_deps="avcodec avutil"
3422 demuxing_decoding_example_deps="avcodec avformat avutil"
3423 encode_audio_example_deps="avcodec avutil"
3424 encode_video_example_deps="avcodec avutil"
3425 extract_mvs_example_deps="avcodec avformat avutil"
3426 filter_audio_example_deps="avfilter avutil"
3427 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3428 filtering_video_example_deps="avfilter avcodec avformat avutil"
3429 http_multiclient_example_deps="avformat avutil fork"
3430 hw_decode_example_deps="avcodec avformat avutil"
3431 metadata_example_deps="avformat avutil"
3432 muxing_example_deps="avcodec avformat avutil swscale"
3433 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3434 remuxing_example_deps="avcodec avformat avutil"
3435 resampling_audio_example_deps="avutil swresample"
3436 scaling_video_example_deps="avutil swscale"
3437 transcode_aac_example_deps="avcodec avformat swresample"
3438 transcoding_example_deps="avfilter avcodec avformat avutil"
3439 vaapi_encode_example_deps="avcodec avutil h264_vaapi_encoder"
3440 vaapi_transcode_example_deps="avcodec avformat avutil h264_vaapi_encoder"
3441
3442 # EXTRALIBS_LIST
3443 cpu_init_extralibs="pthreads_extralibs"
3444 cws2fws_extralibs="zlib_extralibs"
3445
3446 # libraries, in linking order
3447 avcodec_deps="avutil"
3448 avcodec_suggest="libm"
3449 avcodec_select="null_bsf"
3450 avdevice_deps="avformat avcodec avutil"
3451 avdevice_suggest="libm"
3452 avfilter_deps="avutil"
3453 avfilter_suggest="libm"
3454 avformat_deps="avcodec avutil"
3455 avformat_suggest="libm network zlib"
3456 avresample_deps="avutil"
3457 avresample_suggest="libm"
3458 avutil_suggest="clock_gettime ffnvcodec libm libdrm libmfx opencl user32 vaapi videotoolbox corefoundation corevideo coremedia bcrypt"
3459 postproc_deps="avutil gpl"
3460 postproc_suggest="libm"
3461 swresample_deps="avutil"
3462 swresample_suggest="libm libsoxr"
3463 swscale_deps="avutil"
3464 swscale_suggest="libm"
3465
3466 avcodec_extralibs="pthreads_extralibs iconv_extralibs"
3467 avfilter_extralibs="pthreads_extralibs"
3468 avutil_extralibs="d3d11va_extralibs nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3469
3470 # programs
3471 ffmpeg_deps="avcodec avfilter avformat"
3472 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3473                null_filter
3474                trim_filter"
3475 ffmpeg_suggest="ole32 psapi shell32"
3476 ffplay_deps="avcodec avformat swscale swresample sdl2"
3477 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3478 ffplay_suggest="shell32"
3479 ffprobe_deps="avcodec avformat"
3480 ffprobe_suggest="shell32"
3481
3482 # documentation
3483 podpages_deps="perl"
3484 manpages_deps="perl pod2man"
3485 htmlpages_deps="perl"
3486 htmlpages_deps_any="makeinfo_html texi2html"
3487 txtpages_deps="perl makeinfo"
3488 doc_deps_any="manpages htmlpages podpages txtpages"
3489
3490 # default parameters
3491
3492 logfile="ffbuild/config.log"
3493
3494 # installation paths
3495 prefix_default="/usr/local"
3496 bindir_default='${prefix}/bin'
3497 datadir_default='${prefix}/share/ffmpeg'
3498 docdir_default='${prefix}/share/doc/ffmpeg'
3499 incdir_default='${prefix}/include'
3500 libdir_default='${prefix}/lib'
3501 mandir_default='${prefix}/share/man'
3502
3503 # toolchain
3504 ar_default="ar"
3505 cc_default="gcc"
3506 cxx_default="g++"
3507 host_cc_default="gcc"
3508 doxygen_default="doxygen"
3509 install="install"
3510 ln_s_default="ln -s -f"
3511 nm_default="nm -g"
3512 pkg_config_default=pkg-config
3513 ranlib_default="ranlib"
3514 strip_default="strip"
3515 version_script='--version-script'
3516 objformat="elf32"
3517 x86asmexe_default="nasm"
3518 windres_default="windres"
3519 nvcc_default="nvcc"
3520 nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
3521 striptype="direct"
3522
3523 # OS
3524 target_os_default=$(tolower $(uname -s))
3525 host_os=$target_os_default
3526
3527 # machine
3528 if test "$target_os_default" = aix; then
3529     arch_default=$(uname -p)
3530     strip_default="strip -X32_64"
3531 else
3532     arch_default=$(uname -m)
3533 fi
3534 cpu="generic"
3535 intrinsics="none"
3536
3537 # configurable options
3538 enable $PROGRAM_LIST
3539 enable $DOCUMENT_LIST
3540 enable $EXAMPLE_LIST
3541 enable $(filter_out avresample $LIBRARY_LIST)
3542 enable stripping
3543
3544 enable asm
3545 enable debug
3546 enable doc
3547 enable faan faandct faanidct
3548 enable optimizations
3549 enable runtime_cpudetect
3550 enable safe_bitstream_reader
3551 enable static
3552 enable swscale_alpha
3553 enable valgrind_backtrace
3554
3555 sws_max_filter_size_default=256
3556 set_default sws_max_filter_size
3557
3558 # internal components are enabled by default
3559 enable $EXTRALIBS_LIST
3560
3561 # Avoid external, non-system, libraries getting enabled by dependency resolution
3562 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3563
3564 # build settings
3565 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3566 LIBPREF="lib"
3567 LIBSUF=".a"
3568 FULLNAME='$(NAME)$(BUILDSUF)'
3569 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3570 SLIBPREF="lib"
3571 SLIBSUF=".so"
3572 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3573 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3574 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3575 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3576 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3577 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3578 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3579
3580 asflags_filter=echo
3581 cflags_filter=echo
3582 ldflags_filter=echo
3583
3584 AS_C='-c'
3585 AS_O='-o $@'
3586 CC_C='-c'
3587 CC_E='-E -o $@'
3588 CC_O='-o $@'
3589 CXX_C='-c'
3590 CXX_O='-o $@'
3591 OBJCC_C='-c'
3592 OBJCC_E='-E -o $@'
3593 OBJCC_O='-o $@'
3594 X86ASM_O='-o $@'
3595 LD_O='-o $@'
3596 LD_LIB='-l%'
3597 LD_PATH='-L'
3598 HOSTCC_C='-c'
3599 HOSTCC_E='-E -o $@'
3600 HOSTCC_O='-o $@'
3601 HOSTLD_O='-o $@'
3602 NVCC_C='-c'
3603 NVCC_O='-o $@'
3604
3605 host_extralibs='-lm'
3606 host_cflags_filter=echo
3607 host_ldflags_filter=echo
3608
3609 target_path='$(CURDIR)'
3610
3611 # since the object filename is not given with the -MM flag, the compiler
3612 # is only able to print the basename, and we must add the path ourselves
3613 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3614 DEPFLAGS='-MM'
3615
3616 mkdir -p ffbuild
3617
3618 # find source path
3619 if test -f configure; then
3620     source_path=.
3621 else
3622     source_path=$(cd $(dirname "$0"); pwd)
3623     case "$source_path" in
3624         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3625     esac
3626     test -e "$source_path/config.h" &&
3627         die "Out of tree builds are impossible with config.h in source dir."
3628 fi
3629
3630 for v in "$@"; do
3631     r=${v#*=}
3632     l=${v%"$r"}
3633     r=$(sh_quote "$r")
3634     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3635 done
3636
3637 find_things_extern(){
3638     thing=$1
3639     pattern=$2
3640     file=$source_path/$3
3641     out=${4:-$thing}
3642     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$out/p" "$file"
3643 }
3644
3645 find_filters_extern(){
3646     file=$source_path/$1
3647     #sed -n "s/^extern AVFilter ff_\([avfsinkrc]\{2,5\}\)_\(\w\+\);/\2_filter/p" $file
3648     sed -E -n "s/^extern AVFilter ff_([avfsinkrc]{2,5})_([a-zA-Z0-9_]+);/\2_filter/p" $file
3649 }
3650
3651 FILTER_LIST=$(find_filters_extern libavfilter/allfilters.c)
3652 OUTDEV_LIST=$(find_things_extern muxer AVOutputFormat libavdevice/alldevices.c outdev)
3653 INDEV_LIST=$(find_things_extern demuxer AVInputFormat libavdevice/alldevices.c indev)
3654 MUXER_LIST=$(find_things_extern muxer AVOutputFormat libavformat/allformats.c)
3655 DEMUXER_LIST=$(find_things_extern demuxer AVInputFormat libavformat/allformats.c)
3656 ENCODER_LIST=$(find_things_extern encoder AVCodec libavcodec/allcodecs.c)
3657 DECODER_LIST=$(find_things_extern decoder AVCodec libavcodec/allcodecs.c)
3658 CODEC_LIST="
3659     $ENCODER_LIST
3660     $DECODER_LIST
3661 "
3662 PARSER_LIST=$(find_things_extern parser AVCodecParser libavcodec/parser.c)
3663 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3664 HWACCEL_LIST=$(find_things_extern hwaccel AVHWAccel libavcodec/hwaccels.h)
3665 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3666
3667 AVCODEC_COMPONENTS_LIST="
3668     $BSF_LIST
3669     $DECODER_LIST
3670     $ENCODER_LIST
3671     $HWACCEL_LIST
3672     $PARSER_LIST
3673 "
3674
3675 AVDEVICE_COMPONENTS_LIST="
3676     $INDEV_LIST
3677     $OUTDEV_LIST
3678 "
3679
3680 AVFILTER_COMPONENTS_LIST="
3681     $FILTER_LIST
3682 "
3683
3684 AVFORMAT_COMPONENTS_LIST="
3685     $DEMUXER_LIST
3686     $MUXER_LIST
3687     $PROTOCOL_LIST
3688 "
3689
3690 ALL_COMPONENTS="
3691     $AVCODEC_COMPONENTS_LIST
3692     $AVDEVICE_COMPONENTS_LIST
3693     $AVFILTER_COMPONENTS_LIST
3694     $AVFORMAT_COMPONENTS_LIST
3695 "
3696
3697 for n in $COMPONENT_LIST; do
3698     v=$(toupper ${n%s})_LIST
3699     eval enable \$$v
3700     eval ${n}_if_any="\$$v"
3701 done
3702
3703 enable $ARCH_EXT_LIST
3704
3705 die_unknown(){
3706     echo "Unknown option \"$1\"."
3707     echo "See $0 --help for available options."
3708     exit 1
3709 }
3710
3711 print_in_columns() {
3712     cols=$(expr $ncols / 24)
3713     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3714 }
3715
3716 show_list() {
3717     suffix=_$1
3718     shift
3719     echo $* | sed s/$suffix//g | print_in_columns
3720     exit 0
3721 }
3722
3723 rand_list(){
3724     IFS=', '
3725     set -- $*
3726     unset IFS
3727     for thing; do
3728         comp=${thing%:*}
3729         prob=${thing#$comp}
3730         prob=${prob#:}
3731         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3732         echo "prob ${prob:-0.5}"
3733         printf '%s\n' $comp
3734     done
3735 }
3736
3737 do_random(){
3738     action=$1
3739     shift
3740     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3741     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3742 }
3743
3744 for opt do
3745     optval="${opt#*=}"
3746     case "$opt" in
3747         --extra-ldflags=*)
3748             add_ldflags $optval
3749         ;;
3750         --extra-ldexeflags=*)
3751             add_ldexeflags $optval
3752         ;;
3753         --extra-ldsoflags=*)
3754             add_ldsoflags $optval
3755         ;;
3756         --extra-ldlibflags=*)
3757             warn "The --extra-ldlibflags option is only provided for compatibility and will be\n"\
3758                  "removed in the future. Use --extra-ldsoflags instead."
3759             add_ldsoflags $optval
3760         ;;
3761         --extra-libs=*)
3762             add_extralibs $optval
3763         ;;
3764         --disable-devices)
3765             disable $INDEV_LIST $OUTDEV_LIST
3766         ;;
3767         --enable-debug=*)
3768             debuglevel="$optval"
3769         ;;
3770         --disable-programs)
3771             disable $PROGRAM_LIST
3772         ;;
3773         --disable-everything)
3774             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3775         ;;
3776         --disable-all)
3777             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3778             disable $LIBRARY_LIST $PROGRAM_LIST doc
3779             enable avutil
3780         ;;
3781         --enable-random|--disable-random)
3782             action=${opt%%-random}
3783             do_random ${action#--} $COMPONENT_LIST
3784         ;;
3785         --enable-random=*|--disable-random=*)
3786             action=${opt%%-random=*}
3787             do_random ${action#--} $optval
3788         ;;
3789         --enable-sdl)
3790             enable sdl2
3791         ;;
3792         --enable-*=*|--disable-*=*)
3793             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3794             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3795             eval list=\$$(toupper $thing)_LIST
3796             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3797             list=$(filter "$name" $list)
3798             [ "$list" = "" ] && warn "Option $opt did not match anything"
3799             $action $list
3800         ;;
3801         --enable-yasm|--disable-yasm)
3802             warn "The ${opt} option is only provided for compatibility and will be\n"\
3803                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3804             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3805         ;;
3806         --yasmexe=*)
3807             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3808                  "removed in the future. Use --x86asmexe instead."
3809             x86asmexe="$optval"
3810         ;;
3811         --enable-?*|--disable-?*)
3812             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3813             if is_in $option $COMPONENT_LIST; then
3814                 test $action = disable && action=unset
3815                 eval $action \$$(toupper ${option%s})_LIST
3816             elif is_in $option $CMDLINE_SELECT; then
3817                 $action $option
3818             else
3819                 die_unknown $opt
3820             fi
3821         ;;
3822         --list-*)
3823             NAME="${opt#--list-}"
3824             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3825             NAME=${NAME%s}
3826             eval show_list $NAME \$$(toupper $NAME)_LIST
3827         ;;
3828         --help|-h) show_help
3829         ;;
3830         --quiet|-q) quiet=yes
3831         ;;
3832         --fatal-warnings) enable fatal_warnings
3833         ;;
3834         --libfuzzer=*)
3835             libfuzzer_path="$optval"
3836         ;;
3837         *)
3838             optname="${opt%%=*}"
3839             optname="${optname#--}"
3840             optname=$(echo "$optname" | sed 's/-/_/g')
3841             if is_in $optname $CMDLINE_SET; then
3842                 eval $optname='$optval'
3843             elif is_in $optname $CMDLINE_APPEND; then
3844                 append $optname "$optval"
3845             else
3846                 die_unknown $opt
3847             fi
3848         ;;
3849     esac
3850 done
3851
3852 for e in $env; do
3853     eval "export $e"
3854 done
3855
3856 if disabled autodetect; then
3857
3858     # Unless iconv is explicitely disabled by the user, we still want to probe
3859     # for the iconv from the libc.
3860     disabled iconv || enable libc_iconv
3861
3862     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3863     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3864 fi
3865 # Mark specifically enabled, but normally autodetected libraries as requested.
3866 for lib in $AUTODETECT_LIBS; do
3867     enabled $lib && request $lib
3868 done
3869 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
3870 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3871 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3872
3873 disabled logging && logfile=/dev/null
3874
3875 # command line configuration sanity checks
3876
3877 # we need to build at least one lib type
3878 if ! enabled_any static shared; then
3879     cat <<EOF
3880 At least one library type must be built.
3881 Specify --enable-static to build the static libraries or --enable-shared to
3882 build the shared libraries as well. To only build the shared libraries specify
3883 --disable-static in addition to --enable-shared.
3884 EOF
3885     exit 1
3886 fi
3887
3888 die_license_disabled() {
3889     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3890 }
3891
3892 die_license_disabled_gpl() {
3893     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3894 }
3895
3896 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3897 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3898
3899 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3900 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3901
3902 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3903
3904 if enabled nonfree; then
3905     license="nonfree and unredistributable"
3906 elif enabled gplv3; then
3907     license="GPL version 3 or later"
3908 elif enabled lgplv3; then
3909     license="LGPL version 3 or later"
3910 elif enabled gpl; then
3911     license="GPL version 2 or later"
3912 else
3913     license="LGPL version 2.1 or later"
3914 fi
3915
3916 enabled_all gnutls openssl &&
3917     die "GnuTLS and OpenSSL must not be enabled at the same time."
3918
3919 # Disable all the library-specific components if the library itself
3920 # is disabled, see AVCODEC_LIST and following _LIST variables.
3921
3922 disable_components(){
3923     disabled ${1} && disable $(
3924         eval components="\$$(toupper ${1})_COMPONENTS"
3925         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3926     )
3927 }
3928
3929 map 'disable_components $v' $LIBRARY_LIST
3930
3931 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3932 set >> $logfile
3933
3934 test -n "$valgrind" && toolchain="valgrind-memcheck"
3935
3936 enabled ossfuzz && {
3937     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
3938     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
3939 }
3940
3941 case "$toolchain" in
3942     *-asan)
3943         cc_default="${toolchain%-asan}"
3944         add_cflags  -fsanitize=address
3945         add_ldflags -fsanitize=address
3946     ;;
3947     *-msan)
3948         cc_default="${toolchain%-msan}"
3949         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3950         add_ldflags -fsanitize=memory
3951     ;;
3952     *-tsan)
3953         cc_default="${toolchain%-tsan}"
3954         add_cflags  -fsanitize=thread -fPIE
3955         add_ldflags -fsanitize=thread -pie
3956         case "$toolchain" in
3957             gcc-tsan)
3958                 add_cflags  -fPIC
3959                 add_ldflags -fPIC
3960                 ;;
3961         esac
3962     ;;
3963     *-usan)
3964         cc_default="${toolchain%-usan}"
3965         add_cflags  -fsanitize=undefined
3966         add_ldflags -fsanitize=undefined
3967     ;;
3968     valgrind-*)
3969         target_exec_default="valgrind"
3970         case "$toolchain" in
3971             valgrind-massif)
3972                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3973                 ;;
3974             valgrind-memcheck)
3975                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3976                 ;;
3977         esac
3978     ;;
3979     msvc)
3980         # Check whether the current MSVC version needs the C99 converter.
3981         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3982         # support enough of C99 to build ffmpeg. Default to the new
3983         # behaviour if the regexp was unable to match anything, since this
3984         # successfully parses the version number of existing supported
3985         # versions that require the converter (MSVC 2010 and 2012).
3986         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3987         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3988             cc_default="cl"
3989             cxx_default="cl"
3990         else
3991             die "Unsupported MSVC version (2013 or newer required)"
3992         fi
3993         ld_default="$source_path/compat/windows/mslink"
3994         nm_default="dumpbin -symbols"
3995         ar_default="lib"
3996         case "$arch" in
3997         aarch64|arm64)
3998             as_default="armasm64"
3999             ;;
4000         arm*)
4001             as_default="armasm"
4002             ;;
4003         esac
4004         target_os_default="win32"
4005         # Use a relative path for TMPDIR. This makes sure all the
4006         # ffconf temp files are written with a relative path, avoiding
4007         # issues with msys/win32 path conversion for MSVC parameters
4008         # such as -Fo<file> or -out:<file>.
4009         TMPDIR=.
4010     ;;
4011     icl)
4012         cc_default="icl"
4013         ld_default="xilink"
4014         nm_default="dumpbin -symbols"
4015         ar_default="xilib"
4016         target_os_default="win32"
4017         TMPDIR=.
4018     ;;
4019     gcov)
4020         add_cflags  -fprofile-arcs -ftest-coverage
4021         add_ldflags -fprofile-arcs -ftest-coverage
4022     ;;
4023     llvm-cov)
4024         add_cflags -fprofile-arcs -ftest-coverage
4025         add_ldflags --coverage
4026     ;;
4027     hardened)
4028         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
4029         add_cflags   -fno-strict-overflow -fstack-protector-all
4030         add_ldflags  -Wl,-z,relro -Wl,-z,now
4031         add_cflags   -fPIE
4032         add_ldexeflags -fPIE -pie
4033     ;;
4034     ?*)
4035         die "Unknown toolchain $toolchain"
4036     ;;
4037 esac
4038
4039 if test -n "$cross_prefix"; then
4040     test -n "$arch" && test -n "$target_os" ||
4041         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
4042     enable cross_compile
4043 fi
4044
4045 ar_default="${cross_prefix}${ar_default}"
4046 cc_default="${cross_prefix}${cc_default}"
4047 cxx_default="${cross_prefix}${cxx_default}"
4048 nm_default="${cross_prefix}${nm_default}"
4049 pkg_config_default="${cross_prefix}${pkg_config_default}"
4050 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
4051     ranlib_default="${cross_prefix}${ranlib_default} -D"
4052 else
4053     ranlib_default="${cross_prefix}${ranlib_default}"
4054 fi
4055 strip_default="${cross_prefix}${strip_default}"
4056 windres_default="${cross_prefix}${windres_default}"
4057
4058 sysinclude_default="${sysroot}/usr/include"
4059
4060 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
4061     target_exec target_os x86asmexe nvcc
4062 enabled cross_compile || host_cc_default=$cc
4063 set_default host_cc
4064
4065 pkg_config_fail_message=""
4066 if ! $pkg_config --version >/dev/null 2>&1; then
4067     warn "$pkg_config not found, library detection may fail."
4068     pkg_config=false
4069 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
4070     pkg_config_fail_message="
4071 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
4072 fi
4073
4074 if test $doxygen != $doxygen_default && \
4075   ! $doxygen --version >/dev/null 2>&1; then
4076     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
4077 fi
4078
4079 exesuf() {
4080     case $1 in
4081         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
4082     esac
4083 }
4084
4085 EXESUF=$(exesuf $target_os)
4086 HOSTEXESUF=$(exesuf $host_os)
4087
4088 # set temporary file name
4089 : ${TMPDIR:=$TEMPDIR}
4090 : ${TMPDIR:=$TMP}
4091 : ${TMPDIR:=/tmp}
4092
4093 if [ -n "$tempprefix" ] ; then
4094     mktemp(){
4095         tmpname="$tempprefix.${HOSTNAME}.${UID}"
4096         echo "$tmpname"
4097         mkdir "$tmpname"
4098     }
4099 elif ! test_cmd mktemp -u XXXXXX; then
4100     # simple replacement for missing mktemp
4101     # NOT SAFE FOR GENERAL USE
4102     mktemp(){
4103         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
4104         echo "$tmpname"
4105         mkdir "$tmpname"
4106     }
4107 fi
4108
4109 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
4110     die "Unable to create temporary directory in $TMPDIR."
4111
4112 tmpfile(){
4113     tmp="${FFTMPDIR}/test"$2
4114     (set -C; exec > $tmp) 2> /dev/null ||
4115         die "Unable to create temporary file in $FFTMPDIR."
4116     eval $1=$tmp
4117 }
4118
4119 trap 'rm -rf -- "$FFTMPDIR"' EXIT
4120 trap 'exit 2' INT
4121
4122 tmpfile TMPASM .asm
4123 tmpfile TMPC   .c
4124 tmpfile TMPCPP .cpp
4125 tmpfile TMPE   $EXESUF
4126 tmpfile TMPH   .h
4127 tmpfile TMPM   .m
4128 tmpfile TMPO   .o
4129 tmpfile TMPS   .S
4130 tmpfile TMPSH  .sh
4131 tmpfile TMPV   .ver
4132
4133 unset -f mktemp
4134
4135 chmod +x $TMPE
4136
4137 # make sure we can execute files in $TMPDIR
4138 cat > $TMPSH 2>> $logfile <<EOF
4139 #! /bin/sh
4140 EOF
4141 chmod +x $TMPSH >> $logfile 2>&1
4142 if ! $TMPSH >> $logfile 2>&1; then
4143     cat <<EOF
4144 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
4145 variable to another directory and make sure that it is not mounted noexec.
4146 EOF
4147     die "Sanity test failed."
4148 fi
4149
4150 armasm_flags(){
4151     for flag; do
4152         case $flag in
4153             # Filter out MSVC cl.exe options from cflags that shouldn't
4154             # be passed to gas-preprocessor
4155             -M[TD]*)                                            ;;
4156             *)                  echo $flag                      ;;
4157         esac
4158    done
4159 }
4160
4161 cparser_flags(){
4162     for flag; do
4163         case $flag in
4164             -Wno-switch)             echo -Wno-switch-enum ;;
4165             -Wno-format-zero-length) ;;
4166             -Wdisabled-optimization) ;;
4167             -Wno-pointer-sign)       echo -Wno-other ;;
4168             *)                       echo $flag ;;
4169         esac
4170     done
4171 }
4172
4173 msvc_common_flags(){
4174     for flag; do
4175         case $flag in
4176             # In addition to specifying certain flags under the compiler
4177             # specific filters, they must be specified here as well or else the
4178             # generic catch all at the bottom will print the original flag.
4179             -Wall)                ;;
4180             -Wextra)              ;;
4181             -std=c99)             ;;
4182             # Common flags
4183             -fomit-frame-pointer) ;;
4184             -g)                   echo -Z7 ;;
4185             -fno-math-errno)      ;;
4186             -fno-common)          ;;
4187             -fno-signed-zeros)    ;;
4188             -fPIC)                ;;
4189             -mthumb)              ;;
4190             -march=*)             ;;
4191             -lz)                  echo zlib.lib ;;
4192             -lx264)               echo libx264.lib ;;
4193             -lstdc++)             ;;
4194             -l*)                  echo ${flag#-l}.lib ;;
4195             -LARGEADDRESSAWARE)   echo $flag ;;
4196             -L*)                  echo -libpath:${flag#-L} ;;
4197             *)                    echo $flag ;;
4198         esac
4199     done
4200 }
4201
4202 msvc_flags(){
4203     msvc_common_flags "$@"
4204     for flag; do
4205         case $flag in
4206             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4207                                        -wd4554 ;;
4208             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4209                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4210                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4211                                        -wd4307 \
4212                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4213         esac
4214     done
4215 }
4216
4217 icl_flags(){
4218     msvc_common_flags "$@"
4219     for flag; do
4220         case $flag in
4221             # Despite what Intel's documentation says -Wall, which is supported
4222             # on Windows, does enable remarks so disable them here.
4223             -Wall)                echo $flag -Qdiag-disable:remark ;;
4224             -std=c99)             echo -Qstd=c99 ;;
4225             -flto)                echo -ipo ;;
4226         esac
4227     done
4228 }
4229
4230 icc_flags(){
4231     for flag; do
4232         case $flag in
4233             -flto)                echo -ipo ;;
4234             *)                    echo $flag ;;
4235         esac
4236     done
4237 }
4238
4239 suncc_flags(){
4240     for flag; do
4241         case $flag in
4242             -march=*|-mcpu=*)
4243                 case "${flag#*=}" in
4244                     native)                   echo -xtarget=native       ;;
4245                     v9|niagara)               echo -xarch=sparc          ;;
4246                     ultrasparc)               echo -xarch=sparcvis       ;;
4247                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4248                     i586|pentium)             echo -xchip=pentium        ;;
4249                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4250                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4251                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4252                     pentium4*)          echo -xtarget=pentium4           ;;
4253                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4254                     *-sse3)             echo -xarch=sse3                 ;;
4255                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4256                     bonnell)                   echo -xarch=ssse3         ;;
4257                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4258                     westmere)                  echo -xtarget=westmere    ;;
4259                     silvermont)                echo -xarch=sse4_2        ;;
4260                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4261                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4262                                                echo -xarch=avx           ;;
4263                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4264                     btver1)                    echo -xarch=amdsse4a      ;;
4265                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4266                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4267                     k8|opteron|athlon64|athlon-fx)
4268                                                echo -xarch=sse2a         ;;
4269                     athlon*)                   echo -xarch=pentium_proa  ;;
4270                 esac
4271                 ;;
4272             -std=c99)             echo -xc99              ;;
4273             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4274             -fPIC)                echo -KPIC -xcode=pic32 ;;
4275             -W*,*)                echo $flag              ;;
4276             -f*-*|-W*|-mimpure-text)                      ;;
4277             -shared)              echo -G                 ;;
4278             *)                    echo $flag              ;;
4279         esac
4280     done
4281 }
4282
4283 probe_cc(){
4284     pfx=$1
4285     _cc=$2
4286     first=$3
4287
4288     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4289     unset _ld_o _ldflags _ld_lib _ld_path
4290     unset _depflags _DEPCMD _DEPFLAGS
4291     _flags_filter=echo
4292
4293     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4294         true # no-op to avoid reading stdin in following checks
4295     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4296         _type=llvm_gcc
4297         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4298         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4299         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4300         _cflags_speed='-O3'
4301         _cflags_size='-Os'
4302     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4303         _type=gcc
4304         gcc_version=$($_cc --version | head -n1)
4305         gcc_basever=$($_cc -dumpversion)
4306         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4307         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4308         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4309         case $gcc_basever in
4310             2) ;;
4311             2.*) ;;
4312             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4313         esac
4314         if [ "$first" = true ]; then
4315             case $gcc_basever in
4316                 4.2*)
4317                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4318             esac
4319         fi
4320         _cflags_speed='-O3'
4321         _cflags_size='-Os'
4322     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4323         _type=icc
4324         _ident=$($_cc --version | head -n1)
4325         _depflags='-MMD'
4326         _cflags_speed='-O3'
4327         _cflags_size='-Os'
4328         _cflags_noopt='-O1'
4329         _flags_filter=icc_flags
4330     elif $_cc -v 2>&1 | grep -q xlc; then
4331         _type=xlc
4332         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4333         _cflags_speed='-O5'
4334         _cflags_size='-O5 -qcompact'
4335     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4336         test -d "$sysroot" || die "No valid sysroot specified."
4337         _type=armcc
4338         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4339         armcc_conf="$PWD/armcc.conf"
4340         $_cc --arm_linux_configure                 \
4341              --arm_linux_config_file="$armcc_conf" \
4342              --configure_sysroot="$sysroot"        \
4343              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4344              die "Error creating armcc configuration file."
4345         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4346         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4347         as_default="${cross_prefix}gcc"
4348         _depflags='-MMD'
4349         _cflags_speed='-O3'
4350         _cflags_size='-Os'
4351     elif $_cc -v 2>&1 | grep -q clang && ! $_cc -? > /dev/null 2>&1; then
4352         _type=clang
4353         _ident=$($_cc --version 2>/dev/null | head -n1)
4354         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4355         _cflags_speed='-O3'
4356         _cflags_size='-Oz'
4357     elif $_cc -V 2>&1 | grep -q Sun; then
4358         _type=suncc
4359         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4360         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4361         _DEPFLAGS='-xM1 -xc99'
4362         _ldflags='-std=c99'
4363         _cflags_speed='-O5'
4364         _cflags_size='-O5 -xspace'
4365         _flags_filter=suncc_flags
4366     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4367         _type=pathscale
4368         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4369         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4370         _cflags_speed='-O2'
4371         _cflags_size='-Os'
4372         _flags_filter='filter_out -Wdisabled-optimization'
4373     elif $_cc -v 2>&1 | grep -q Open64; then
4374         _type=open64
4375         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4376         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4377         _cflags_speed='-O2'
4378         _cflags_size='-Os'
4379         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4380     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4381         _type=armasm
4382         _ident=$($_cc | head -n1)
4383         # 4509: "This form of conditional instruction is deprecated"
4384         _flags="-nologo -ignore 4509"
4385         _flags_filter=armasm_flags
4386     elif $_cc 2>&1 | grep -q Intel; then
4387         _type=icl
4388         _ident=$($_cc 2>&1 | head -n1)
4389         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4390         # Not only is O3 broken on 13.x+ but it is slower on all previous
4391         # versions (tested) as well.
4392         _cflags_speed="-O2"
4393         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4394         if $_cc 2>&1 | grep -q Linker; then
4395             _ld_o='-out:$@'
4396         else
4397             _ld_o='-Fe$@'
4398         fi
4399         _cc_o='-Fo$@'
4400         _cc_e='-P'
4401         _flags_filter=icl_flags
4402         _ld_lib='lib%.a'
4403         _ld_path='-libpath:'
4404         # -Qdiag-error to make icl error when seeing certain unknown arguments
4405         _flags='-nologo -Qdiag-error:4044,10157'
4406         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4407         # with MSVC which enables it by default.
4408         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4409         disable stripping
4410     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4411         # lld can emulate multiple different linkers; in ms link.exe mode,
4412         # the -? parameter gives the help output which contains an identifyable
4413         # string, while it gives an error in other modes.
4414         _type=lld-link
4415         # The link.exe mode doesn't have a switch for getting the version,
4416         # but we can force it back to gnu mode and get the version from there.
4417         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4418         _ld_o='-out:$@'
4419         _flags_filter=msvc_flags
4420         _ld_lib='lib%.a'
4421         _ld_path='-libpath:'
4422     elif $_cc -nologo- 2>&1 | grep -q Microsoft || { $_cc -v 2>&1 | grep -q clang && $_cc -? > /dev/null 2>&1; }; then
4423         _type=msvc
4424         _ident=$($_cc 2>&1 | head -n1 | tr -d '\r')
4425         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4426         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4427         _cflags_speed="-O2"
4428         _cflags_size="-O1"
4429         _cflags_noopt="-O1"
4430         if $_cc -nologo- 2>&1 | grep -q Linker; then
4431             _ld_o='-out:$@'
4432         else
4433             _ld_o='-Fe$@'
4434         fi
4435         _cc_o='-Fo$@'
4436         _cc_e='-P -Fi$@'
4437         _flags_filter=msvc_flags
4438         _ld_lib='lib%.a'
4439         _ld_path='-libpath:'
4440         _flags='-nologo'
4441         disable stripping
4442     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4443         _type=cparser
4444         _ident=$($_cc --version | head -n1)
4445         _depflags='-MMD'
4446         _cflags_speed='-O4'
4447         _cflags_size='-O2'
4448         _flags_filter=cparser_flags
4449     fi
4450
4451     eval ${pfx}_type=\$_type
4452     eval ${pfx}_ident=\$_ident
4453 }
4454
4455 set_ccvars(){
4456     eval ${1}_C=\${_cc_c-\${${1}_C}}
4457     eval ${1}_E=\${_cc_e-\${${1}_E}}
4458     eval ${1}_O=\${_cc_o-\${${1}_O}}
4459
4460     if [ -n "$_depflags" ]; then
4461         eval ${1}_DEPFLAGS=\$_depflags
4462     else
4463         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4464         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4465         eval DEP${1}FLAGS=\$_flags
4466     fi
4467 }
4468
4469 probe_cc cc "$cc" "true"
4470 cflags_filter=$_flags_filter
4471 cflags_speed=$_cflags_speed
4472 cflags_size=$_cflags_size
4473 cflags_noopt=$_cflags_noopt
4474 add_cflags $_flags $_cflags
4475 cc_ldflags=$_ldflags
4476 set_ccvars CC
4477 set_ccvars CXX
4478
4479 probe_cc hostcc "$host_cc"
4480 host_cflags_filter=$_flags_filter
4481 host_cflags_speed=$_cflags_speed
4482 add_host_cflags  $_flags $_cflags
4483 set_ccvars HOSTCC
4484
4485 test -n "$cc_type" && enable $cc_type ||
4486     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4487
4488 : ${as_default:=$cc}
4489 : ${objcc_default:=$cc}
4490 : ${dep_cc_default:=$cc}
4491 : ${ld_default:=$cc}
4492 : ${host_ld_default:=$host_cc}
4493 set_default ar as objcc dep_cc ld ln_s host_ld windres
4494
4495 probe_cc as "$as"
4496 asflags_filter=$_flags_filter
4497 add_asflags $_flags $_cflags
4498 set_ccvars AS
4499
4500 probe_cc objcc "$objcc"
4501 objcflags_filter=$_flags_filter
4502 add_objcflags $_flags $_cflags
4503 set_ccvars OBJC
4504
4505 probe_cc ld "$ld"
4506 ldflags_filter=$_flags_filter
4507 add_ldflags $_flags $_ldflags
4508 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4509 LD_O=${_ld_o-$LD_O}
4510 LD_LIB=${_ld_lib-$LD_LIB}
4511 LD_PATH=${_ld_path-$LD_PATH}
4512
4513 probe_cc hostld "$host_ld"
4514 host_ldflags_filter=$_flags_filter
4515 add_host_ldflags $_flags $_ldflags
4516 HOSTLD_O=${_ld_o-$HOSTLD_O}
4517
4518 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4519     probe_cc depcc "$dep_cc"
4520     CCDEP=${_DEPCMD:-$DEPCMD}
4521     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4522     DEPCCFLAGS=$_flags
4523 fi
4524
4525 if $ar 2>&1 | grep -q Microsoft; then
4526     arflags="-nologo"
4527     ar_o='-out:$@'
4528 elif $ar 2>&1 | grep -q "\[D\] "; then
4529     arflags="rcD"
4530     ar_o='$@'
4531 else
4532     arflags="rc"
4533     ar_o='$@'
4534 fi
4535
4536 add_cflags $extra_cflags
4537 add_cxxflags $extra_cxxflags
4538 add_objcflags $extra_objcflags
4539 add_asflags $extra_cflags
4540
4541 if test -n "$sysroot"; then
4542     case "$cc_type" in
4543         gcc|llvm_gcc|clang)
4544             add_cppflags --sysroot="$sysroot"
4545             add_ldflags --sysroot="$sysroot"
4546         ;;
4547     esac
4548 fi
4549
4550 if test "$cpu" = host; then
4551     enabled cross_compile &&
4552         die "--cpu=host makes no sense when cross-compiling."
4553
4554     case "$cc_type" in
4555         gcc|llvm_gcc)
4556             check_native(){
4557                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4558                 sed -n "/cc1.*$1=/{
4559                             s/.*$1=\\([^ ]*\\).*/\\1/
4560                             p
4561                             q
4562                         }" $TMPE
4563             }
4564             cpu=$(check_native -march || check_native -mcpu)
4565         ;;
4566         clang)
4567             check_native(){
4568                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4569                 sed -n "/cc1.*-target-cpu /{
4570                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4571                             p
4572                             q
4573                         }" $TMPE
4574             }
4575             cpu=$(check_native -march)
4576         ;;
4577     esac
4578
4579     test "${cpu:-host}" = host &&
4580         die "--cpu=host not supported with compiler $cc"
4581 fi
4582
4583 # Deal with common $arch aliases
4584 case "$arch" in
4585     aarch64|arm64)
4586         arch="aarch64"
4587     ;;
4588     arm*|iPad*|iPhone*)
4589         arch="arm"
4590     ;;
4591     mips*|IP*)
4592         case "$arch" in
4593         *el)
4594             add_cppflags -EL
4595             add_ldflags -EL
4596         ;;
4597         *eb)
4598             add_cppflags -EB
4599             add_ldflags -EB
4600         ;;
4601         esac
4602         arch="mips"
4603     ;;
4604     parisc*|hppa*)
4605         arch="parisc"
4606     ;;
4607     "Power Macintosh"|ppc*|powerpc*)
4608         arch="ppc"
4609     ;;
4610     s390|s390x)
4611         arch="s390"
4612     ;;
4613     sh4|sh)
4614         arch="sh4"
4615     ;;
4616     sun4*|sparc*)
4617         arch="sparc"
4618     ;;
4619     tilegx|tile-gx)
4620         arch="tilegx"
4621     ;;
4622     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4623         arch="x86"
4624     ;;
4625 esac
4626
4627 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4628 enable $arch
4629
4630 # Add processor-specific flags
4631 if enabled aarch64; then
4632
4633     case $cpu in
4634         armv*)
4635             cpuflags="-march=$cpu"
4636         ;;
4637         *)
4638             cpuflags="-mcpu=$cpu"
4639         ;;
4640     esac
4641
4642 elif enabled alpha; then
4643
4644     cpuflags="-mcpu=$cpu"
4645
4646 elif enabled arm; then
4647
4648     check_arm_arch() {
4649         test_cpp_condition stddef.h \
4650             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4651             $cpuflags
4652     }
4653
4654     probe_arm_arch() {
4655         if   check_arm_arch 4;        then echo armv4
4656         elif check_arm_arch 4T;       then echo armv4t
4657         elif check_arm_arch 5;        then echo armv5
4658         elif check_arm_arch 5E;       then echo armv5e
4659         elif check_arm_arch 5T;       then echo armv5t
4660         elif check_arm_arch 5TE;      then echo armv5te
4661         elif check_arm_arch 5TEJ;     then echo armv5te
4662         elif check_arm_arch 6;        then echo armv6
4663         elif check_arm_arch 6J;       then echo armv6j
4664         elif check_arm_arch 6K;       then echo armv6k
4665         elif check_arm_arch 6Z;       then echo armv6z
4666         elif check_arm_arch 6KZ;      then echo armv6zk
4667         elif check_arm_arch 6ZK;      then echo armv6zk
4668         elif check_arm_arch 6T2;      then echo armv6t2
4669         elif check_arm_arch 7;        then echo armv7
4670         elif check_arm_arch 7A  7_A;  then echo armv7-a
4671         elif check_arm_arch 7S;       then echo armv7-a
4672         elif check_arm_arch 7R  7_R;  then echo armv7-r
4673         elif check_arm_arch 7M  7_M;  then echo armv7-m
4674         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4675         elif check_arm_arch 8A  8_A;  then echo armv8-a
4676         fi
4677     }
4678
4679     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4680
4681     case $cpu in
4682         armv*)
4683             cpuflags="-march=$cpu"
4684             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4685         ;;
4686         *)
4687             cpuflags="-mcpu=$cpu"
4688             case $cpu in
4689                 cortex-a*)                               subarch=armv7a  ;;
4690                 cortex-r*)                               subarch=armv7r  ;;
4691                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4692                 arm11*)                                  subarch=armv6   ;;
4693                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4694                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4695                 *)                             subarch=$(probe_arm_arch) ;;
4696             esac
4697         ;;
4698     esac
4699
4700     case "$subarch" in
4701         armv5t*)    enable fast_clz                ;;
4702         armv[6-8]*)
4703             enable fast_clz
4704             disabled fast_unaligned || enable fast_unaligned
4705             ;;
4706     esac
4707
4708 elif enabled avr32; then
4709
4710     case $cpu in
4711         ap7[02]0[0-2])
4712             subarch="avr32_ap"
4713             cpuflags="-mpart=$cpu"
4714         ;;
4715         ap)
4716             subarch="avr32_ap"
4717             cpuflags="-march=$cpu"
4718         ;;
4719         uc3[ab]*)
4720             subarch="avr32_uc"
4721             cpuflags="-mcpu=$cpu"
4722         ;;
4723         uc)
4724             subarch="avr32_uc"
4725             cpuflags="-march=$cpu"
4726         ;;
4727     esac
4728
4729 elif enabled bfin; then
4730
4731     cpuflags="-mcpu=$cpu"
4732
4733 elif enabled mips; then
4734
4735     cpuflags="-march=$cpu"
4736
4737     if [ "$cpu" != "generic" ]; then
4738         disable mips32r2
4739         disable mips32r5
4740         disable mips64r2
4741         disable mips32r6
4742         disable mips64r6
4743         disable loongson2
4744         disable loongson3
4745
4746         case $cpu in
4747             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4748                 enable mips32r2
4749                 disable msa
4750             ;;
4751             p5600|i6400|p6600)
4752                 disable mipsdsp
4753                 disable mipsdspr2
4754             ;;
4755             loongson*)
4756                 enable loongson2
4757                 enable loongson3
4758                 enable local_aligned
4759                 enable simd_align_16
4760                 enable fast_64bit
4761                 enable fast_clz
4762                 enable fast_cmov
4763                 enable fast_unaligned
4764                 disable aligned_stack
4765                 disable mipsfpu
4766                 disable mipsdsp
4767                 disable mipsdspr2
4768                 case $cpu in
4769                     loongson3*)
4770                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4771                     ;;
4772                     loongson2e)
4773                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4774                     ;;
4775                     loongson2f)
4776                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4777                     ;;
4778                 esac
4779             ;;
4780             *)
4781                 # Unknown CPU. Disable everything.
4782                 warn "unknown CPU. Disabling all MIPS optimizations."
4783                 disable mipsfpu
4784                 disable mipsdsp
4785                 disable mipsdspr2
4786                 disable msa
4787                 disable mmi
4788             ;;
4789         esac
4790
4791         case $cpu in
4792             24kc)
4793                 disable mipsfpu
4794                 disable mipsdsp
4795                 disable mipsdspr2
4796             ;;
4797             24kf*)
4798                 disable mipsdsp
4799                 disable mipsdspr2
4800             ;;
4801             24kec|34kc|1004kc)
4802                 disable mipsfpu
4803                 disable mipsdspr2
4804             ;;
4805             24kef*|34kf*|1004kf*)
4806                 disable mipsdspr2
4807             ;;
4808             74kc)
4809                 disable mipsfpu
4810             ;;
4811             p5600)
4812                 enable mips32r5
4813                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4814             ;;
4815             i6400)
4816                 enable mips64r6
4817                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4818             ;;
4819             p6600)
4820                 enable mips64r6
4821                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4822             ;;
4823         esac
4824     else
4825         # We do not disable anything. Is up to the user to disable the unwanted features.
4826         warn 'generic cpu selected'
4827     fi
4828
4829 elif enabled ppc; then
4830
4831     disable ldbrx
4832
4833     case $(tolower $cpu) in
4834         601|ppc601|powerpc601)
4835             cpuflags="-mcpu=601"
4836             disable altivec
4837         ;;
4838         603*|ppc603*|powerpc603*)
4839             cpuflags="-mcpu=603"
4840             disable altivec
4841         ;;
4842         604*|ppc604*|powerpc604*)
4843             cpuflags="-mcpu=604"
4844             disable altivec
4845         ;;
4846         g3|75*|ppc75*|powerpc75*)
4847             cpuflags="-mcpu=750"
4848             disable altivec
4849         ;;
4850         g4|745*|ppc745*|powerpc745*)
4851             cpuflags="-mcpu=7450"
4852             disable vsx
4853         ;;
4854         74*|ppc74*|powerpc74*)
4855             cpuflags="-mcpu=7400"
4856             disable vsx
4857         ;;
4858         g5|970|ppc970|powerpc970)
4859             cpuflags="-mcpu=970"
4860             disable vsx
4861         ;;
4862         power[3-6]*)
4863             cpuflags="-mcpu=$cpu"
4864             disable vsx
4865         ;;
4866         power[7-8]*)
4867             cpuflags="-mcpu=$cpu"
4868         ;;
4869         cell)
4870             cpuflags="-mcpu=cell"
4871             enable ldbrx
4872             disable vsx
4873         ;;
4874         e500mc)
4875             cpuflags="-mcpu=e500mc"
4876             disable altivec
4877         ;;
4878         e500v2)
4879             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4880             disable altivec
4881             disable dcbzl
4882         ;;
4883         e500)
4884             cpuflags="-mcpu=8540 -mhard-float"
4885             disable altivec
4886             disable dcbzl
4887         ;;
4888     esac
4889
4890 elif enabled sparc; then
4891
4892     case $cpu in
4893         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4894             cpuflags="-mcpu=$cpu"
4895         ;;
4896         ultrasparc*|niagara[234])
4897             cpuflags="-mcpu=$cpu"
4898         ;;
4899     esac
4900
4901 elif enabled x86; then
4902
4903     case $cpu in
4904         i[345]86|pentium)
4905             cpuflags="-march=$cpu"
4906             disable i686
4907             disable mmx
4908         ;;
4909         # targets that do NOT support nopl and conditional mov (cmov)
4910         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4911             cpuflags="-march=$cpu"
4912             disable i686
4913         ;;
4914         # targets that do support nopl and conditional mov (cmov)
4915         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4916         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4917         |amdfam10|barcelona|b[dt]ver*|znver*)
4918             cpuflags="-march=$cpu"
4919             enable i686
4920             enable fast_cmov
4921         ;;
4922         # targets that do support conditional mov but on which it's slow
4923         pentium4|pentium4m|prescott|nocona)
4924             cpuflags="-march=$cpu"
4925             enable i686
4926             disable fast_cmov
4927         ;;
4928     esac
4929
4930 fi
4931
4932 if [ "$cpu" != generic ]; then
4933     add_cflags  $cpuflags
4934     add_asflags $cpuflags
4935     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4936 fi
4937
4938 # compiler sanity check
4939 test_exec <<EOF
4940 int main(void){ return 0; }
4941 EOF
4942 if test "$?" != 0; then
4943     echo "$cc is unable to create an executable file."
4944     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4945         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4946         echo "Only do this if you know what cross compiling means."
4947     fi
4948     die "C compiler test failed."
4949 fi
4950
4951 add_cppflags -D_ISOC99_SOURCE
4952 add_cxxflags -D__STDC_CONSTANT_MACROS
4953 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
4954
4955 # some compilers silently accept -std=c11, so we also need to check that the
4956 # version macro is defined properly
4957 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
4958     add_cflags -std=c11 ||
4959     check_cflags -std=c99
4960
4961 check_cppflags -D_FILE_OFFSET_BITS=64
4962 check_cppflags -D_LARGEFILE_SOURCE
4963
4964 add_host_cppflags -D_ISOC99_SOURCE
4965 check_host_cflags -std=c99
4966 check_host_cflags -Wall
4967 check_host_cflags $host_cflags_speed
4968
4969 check_64bit(){
4970     arch32=$1
4971     arch64=$2
4972     expr=${3:-'sizeof(void *) > 4'}
4973     test_code cc "" "int test[2*($expr) - 1]" &&
4974         subarch=$arch64 || subarch=$arch32
4975     enable $subarch
4976 }
4977
4978 case "$arch" in
4979     aarch64|alpha|ia64)
4980         enabled shared && enable_weak pic
4981     ;;
4982     mips)
4983         check_64bit mips mips64 '_MIPS_SIM > 1'
4984         enabled shared && enable_weak pic
4985     ;;
4986     parisc)
4987         check_64bit parisc parisc64
4988         enabled shared && enable_weak pic
4989     ;;
4990     ppc)
4991         check_64bit ppc ppc64
4992         enabled shared && enable_weak pic
4993     ;;
4994     s390)
4995         check_64bit s390 s390x
4996         enabled shared && enable_weak pic
4997     ;;
4998     sparc)
4999         check_64bit sparc sparc64
5000         enabled shared && enable_weak pic
5001     ;;
5002     x86)
5003         check_64bit x86_32 x86_64
5004         # Treat x32 as x64 for now. Note it also needs pic if shared
5005         test "$subarch" = "x86_32" && test_cpp_condition stddef.h 'defined(__x86_64__)' &&
5006             subarch=x86_64 && enable x86_64 && disable x86_32
5007         if enabled x86_64; then
5008             enabled shared && enable_weak pic
5009             objformat=elf64
5010         fi
5011     ;;
5012 esac
5013
5014 # OS specific
5015 case $target_os in
5016     aix)
5017         SHFLAGS=-shared
5018         add_cppflags '-I\$(SRC_PATH)/compat/aix'
5019         enabled shared && add_ldflags -Wl,-brtl
5020         arflags='-Xany -r -c'
5021         striptype=""
5022         ;;
5023     android)
5024         disable symver
5025         enable section_data_rel_ro
5026         SLIB_INSTALL_NAME='$(SLIBNAME)'
5027         SLIB_INSTALL_LINKS=
5028         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
5029         ;;
5030     haiku)
5031         prefix_default="/boot/common"
5032         network_extralibs="-lnetwork"
5033         host_extralibs=
5034         ;;
5035     sunos)
5036         SHFLAGS='-shared -Wl,-h,$$(@F)'
5037         enabled x86 && append SHFLAGS -mimpure-text
5038         network_extralibs="-lsocket -lnsl"
5039         add_cppflags -D__EXTENSIONS__
5040         # When using suncc to build, the Solaris linker will mark
5041         # an executable with each instruction set encountered by
5042         # the Solaris assembler.  As our libraries contain their own
5043         # guards for processor-specific code, instead suppress
5044         # generation of the HWCAPS ELF section on Solaris x86 only.
5045         enabled_all suncc x86 &&
5046             echo "hwcap_1 = OVERRIDE;" > mapfile &&
5047             add_ldflags -Wl,-M,mapfile
5048         nm_default='nm -P -g'
5049         version_script='-M'
5050         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
5051         ;;
5052     netbsd)
5053         disable symver
5054         oss_indev_extralibs="-lossaudio"
5055         oss_outdev_extralibs="-lossaudio"
5056         enabled gcc || check_ldflags -Wl,-zmuldefs
5057         ;;
5058     openbsd|bitrig)
5059         disable symver
5060         striptype=""
5061         SHFLAGS='-shared'
5062         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
5063         SLIB_INSTALL_LINKS=
5064         oss_indev_extralibs="-lossaudio"
5065         oss_outdev_extralibs="-lossaudio"
5066         ;;
5067     dragonfly)
5068         disable symver
5069         ;;
5070     freebsd)
5071         ;;
5072     bsd/os)
5073         add_extralibs -lpoll -lgnugetopt
5074         strip="strip -d"
5075         ;;
5076     darwin)
5077         enabled ppc && add_asflags -force_cpusubtype_ALL
5078         install_name_dir_default='$(SHLIBDIR)'
5079         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
5080         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
5081         strip="${strip} -x"
5082         add_ldflags -Wl,-dynamic,-search_paths_first
5083         check_cflags -Werror=partial-availability
5084         SLIBSUF=".dylib"
5085         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
5086         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
5087         enabled x86_64 && objformat="macho64" || objformat="macho32"
5088         enabled_any pic shared x86_64 ||
5089             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
5090         check_header dispatch/dispatch.h &&
5091             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
5092         if test -n "$sysroot"; then
5093             is_in -isysroot $cc $CPPFLAGS $CFLAGS || check_cppflags -isysroot $sysroot
5094             is_in -isysroot $ld $LDFLAGS          || check_ldflags  -isysroot $sysroot
5095         fi
5096         version_script='-exported_symbols_list'
5097         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
5098         ;;
5099     msys*)
5100         die "Native MSYS builds are discouraged, please use the MINGW environment."
5101         ;;
5102     mingw32*|mingw64*)
5103         target_os=mingw32
5104         LIBTARGET=i386
5105         if enabled x86_64; then
5106             LIBTARGET="i386:x86-64"
5107         elif enabled arm; then
5108             LIBTARGET="arm"
5109         elif enabled aarch64; then
5110             LIBTARGET="arm64"
5111         fi
5112         if enabled shared; then
5113             # Cannot build both shared and static libs when using dllimport.
5114             disable static
5115         fi
5116         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5117         enabled x86_32 && check_ldflags -Wl,--large-address-aware
5118         shlibdir_default="$bindir_default"
5119         SLIBPREF=""
5120         SLIBSUF=".dll"
5121         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5122         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5123         if test_cmd lib.exe -list; then
5124             SLIB_EXTRA_CMD=-'lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5125             if enabled x86_64; then
5126                 LIBTARGET=x64
5127             fi
5128         else
5129             SLIB_EXTRA_CMD=-'$(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
5130         fi
5131         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5132         SLIB_INSTALL_LINKS=
5133         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5134         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5135         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" AR="$(AR_CMD)" NM="$(NM_CMD)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5136         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--disable-auto-image-base $$(@:$(SLIBSUF)=.def)'
5137         enabled x86_64 && objformat="win64" || objformat="win32"
5138         dlltool="${cross_prefix}dlltool"
5139         ranlib=:
5140         enable dos_paths
5141         check_ldflags -Wl,--nxcompat,--dynamicbase
5142         # Lets work around some stupidity in binutils.
5143         # ld will strip relocations from executables even though we need them
5144         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
5145         # however ld then forgets what the entry point should be (oops) so we
5146         # have to manually (re)set it.
5147         if enabled x86_32; then
5148             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
5149         elif enabled x86_64; then
5150             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
5151             check_ldflags -Wl,--high-entropy-va # binutils 2.25
5152             # Set image base >4GB for extra entropy with HEASLR
5153             add_ldexeflags -Wl,--image-base,0x140000000
5154             append SHFLAGS -Wl,--image-base,0x180000000
5155         fi
5156         ;;
5157     win32|win64)
5158         disable symver
5159         if enabled shared; then
5160             # Link to the import library instead of the normal static library
5161             # for shared libs.
5162             LD_LIB='%.lib'
5163             # Cannot build both shared and static libs with MSVC or icl.
5164             disable static
5165         fi
5166         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
5167         shlibdir_default="$bindir_default"
5168         SLIBPREF=""
5169         SLIBSUF=".dll"
5170         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5171         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5172         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5173         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5174         SLIB_INSTALL_LINKS=
5175         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5176         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5177         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5178         enabled x86_64 && objformat="win64" || objformat="win32"
5179         ranlib=:
5180         enable dos_paths
5181         ;;
5182     cygwin*)
5183         target_os=cygwin
5184         shlibdir_default="$bindir_default"
5185         SLIBPREF="cyg"
5186         SLIBSUF=".dll"
5187         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5188         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5189         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5190         SLIB_INSTALL_LINKS=
5191         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
5192         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
5193         enabled x86_64 && objformat="win64" || objformat="win32"
5194         enable dos_paths
5195         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5196         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5197         ;;
5198     *-dos|freedos|opendos)
5199         network_extralibs="-lsocket"
5200         objformat="coff"
5201         enable dos_paths
5202         add_cppflags -U__STRICT_ANSI__
5203         ;;
5204     linux)
5205         enable section_data_rel_ro
5206         enabled_any arm aarch64 && enable_weak linux_perf
5207         ;;
5208     irix*)
5209         target_os=irix
5210         ranlib="echo ignoring ranlib"
5211         ;;
5212     os/2*)
5213         strip="lxlite -CS"
5214         striptype=""
5215         objformat="aout"
5216         add_cppflags -D_GNU_SOURCE
5217         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
5218         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
5219         LIBSUF="_s.a"
5220         SLIBPREF=""
5221         SLIBSUF=".dll"
5222         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5223         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
5224         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
5225             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
5226             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
5227             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
5228             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
5229         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
5230             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
5231         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5232         SLIB_INSTALL_LINKS=
5233         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
5234         enable dos_paths
5235         enable_weak os2threads
5236         ;;
5237     gnu/kfreebsd)
5238         add_cppflags -D_BSD_SOURCE
5239         ;;
5240     gnu)
5241         ;;
5242     qnx)
5243         add_cppflags -D_QNX_SOURCE
5244         network_extralibs="-lsocket"
5245         ;;
5246     symbian)
5247         SLIBSUF=".dll"
5248         enable dos_paths
5249         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
5250         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
5251         add_ldflags -Wl,--target1-abs,--no-undefined \
5252                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
5253                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
5254         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
5255                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
5256                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
5257         ;;
5258     minix)
5259         ;;
5260     none)
5261         ;;
5262     *)
5263         die "Unknown OS '$target_os'."
5264         ;;
5265 esac
5266
5267 # test if creating links works
5268 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5269 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5270 mkdir "$link_dest"
5271 $ln_s "$link_dest" "$link_name"
5272 touch "$link_dest/test_file"
5273 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5274     # create link to source path
5275     [ -e src ] && rm src
5276     $ln_s "$source_path" src
5277     source_link=src
5278 else
5279     # creating directory links doesn't work
5280     # fall back to using the full source path
5281     source_link="$source_path"
5282 fi
5283 # cleanup
5284 rm -r "$link_dest"
5285 rm -r "$link_name"
5286
5287 # determine libc flavour
5288
5289 probe_libc(){
5290     pfx=$1
5291     pfx_no_=${pfx%_}
5292     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5293     if test_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5294         eval ${pfx}libc_type=uclibc
5295         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5296     elif test_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5297         eval ${pfx}libc_type=glibc
5298         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5299     # MinGW headers can be installed on Cygwin, so check for newlib first.
5300     elif test_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5301         eval ${pfx}libc_type=newlib
5302         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
5303     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5304     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5305         eval ${pfx}libc_type=mingw64
5306         if test_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5307             add_compat msvcrt/snprintf.o
5308             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5309         fi
5310         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5311         eval test \$${pfx_no_}cc_type = "gcc" &&
5312             add_${pfx}cppflags -D__printf__=__gnu_printf__
5313         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5314             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5315     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5316          test_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5317         eval ${pfx}libc_type=mingw32
5318         test_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5319             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5320             die "ERROR: MinGW32 runtime version must be >= 3.15."
5321         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5322         test_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
5323             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5324         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5325             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5326         eval test \$${pfx_no_}cc_type = "gcc" &&
5327             add_${pfx}cppflags -D__printf__=__gnu_printf__
5328     elif test_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5329         eval ${pfx}libc_type=msvcrt
5330         if test_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5331             if [ "$pfx" = host_ ]; then
5332                 add_host_cppflags -Dsnprintf=_snprintf
5333             else
5334                 add_compat strtod.o strtod=avpriv_strtod
5335                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5336                                              _snprintf=avpriv_snprintf  \
5337                                              vsnprintf=avpriv_vsnprintf
5338             fi
5339         fi
5340         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5341         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5342         # 0x601 by default unless something else is set by the user.
5343         # This can easily lead to us detecting functions only present
5344         # in such new versions and producing binaries requiring windows 7.0.
5345         # Therefore explicitly set the default to Vista unless the user has
5346         # set something else on the command line.
5347         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5348         # family. For these cases, configure is free to use any functions
5349         # found in the SDK headers by default. (Alternatively, we could force
5350         # _WIN32_WINNT to 0x0602 in that case.)
5351         test_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5352             { test_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0600; }
5353 #ifdef WINAPI_FAMILY
5354 #include <winapifamily.h>
5355 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5356 #error not desktop
5357 #endif
5358 #endif
5359 EOF
5360         if [ "$pfx" = "" ]; then
5361             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5362             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5363         fi
5364     elif test_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5365         eval ${pfx}libc_type=klibc
5366     elif test_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5367         eval ${pfx}libc_type=bionic
5368     elif test_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5369         eval ${pfx}libc_type=solaris
5370         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5371     fi
5372     test_${pfx}cc <<EOF
5373 #include <time.h>
5374 void *v = localtime_r;
5375 EOF
5376 test "$?" != 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
5377 #include <time.h>
5378 void *v = localtime_r;
5379 EOF
5380
5381     eval test -n "\${${pfx}libc_type}" && enable ${pfx}libc_${libc_type}
5382 }
5383
5384 probe_libc
5385 probe_libc host_
5386
5387 # hacks for compiler/libc/os combinations
5388
5389 case $libc_type in
5390     bionic)
5391         add_compat strtod.o strtod=avpriv_strtod
5392         ;;
5393 esac
5394
5395 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5396     add_cppflags '-I\$(SRC_PATH)/compat/float'
5397
5398 test_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5399
5400 set_default libdir
5401 : ${shlibdir_default:="$libdir"}
5402 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5403
5404 set_default $PATHS_LIST
5405 set_default nm
5406
5407 disabled optimizations || enabled ossfuzz || check_cflags -fomit-frame-pointer
5408
5409 enable_weak_pic() {
5410     disabled pic && return
5411     enable pic
5412     add_cppflags -DPIC
5413     case "$target_os" in
5414     mingw*|cygwin*|win*)
5415         ;;
5416     *)
5417         add_cflags -fPIC
5418         add_asflags -fPIC
5419         ;;
5420     esac
5421 }
5422
5423 enabled pic && enable_weak_pic
5424
5425 test_cc <<EOF || die "Symbol mangling check failed."
5426 int ff_extern;
5427 EOF
5428 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5429 extern_prefix=${sym%%ff_extern*}
5430
5431 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
5432
5433 for restrict_keyword in restrict __restrict__ __restrict ""; do
5434     test_code cc "" "char * $restrict_keyword p" && break
5435 done
5436
5437 check_cc pragma_deprecated "" '_Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"")'
5438
5439 # The global variable ensures the bits appear unchanged in the object file.
5440 test_cc <<EOF || die "endian test failed"
5441 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5442 EOF
5443 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5444
5445 check_cc const_nan math.h "struct { double d; } static const bar[] = { { NAN } }"
5446
5447 if ! enabled ppc64 || enabled bigendian; then
5448     disable vsx
5449 fi
5450
5451 check_gas() {
5452     log "check_gas using '$as' as AS"
5453     # :vararg is used on aarch64, arm and ppc altivec
5454     check_as vararg "
5455 .macro m n, y:vararg=0
5456 \n: .int \y
5457 .endm
5458 m x" || return 1
5459     # .altmacro is only used in arm asm
5460     ! enabled arm || check_as gnu_as ".altmacro"
5461 }
5462
5463 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5464     nogas=:
5465     enabled_any arm aarch64 && nogas=die
5466     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5467     as_noop=-v
5468
5469     case $as_type in
5470         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5471         gcc)  gaspp_as_type=gas ;;
5472         *)    gaspp_as_type=$as_type ;;
5473     esac
5474
5475     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5476
5477     test "${as#*gas-preprocessor.pl}" != "$as" ||
5478     test_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5479         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5480
5481     if ! check_gas ; then
5482         as=${gas:=$as}
5483         check_gas || \
5484             $nogas "GNU assembler not found, install/update gas-preprocessor"
5485     fi
5486
5487     check_as as_func ".func test
5488                       .endfunc"
5489 fi
5490
5491 check_inline_asm inline_asm_labels '"1:\n"'
5492
5493 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5494
5495 if enabled aarch64; then
5496     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5497     # internal assembler in clang 3.3 does not support this instruction
5498     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5499     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5500
5501     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5502
5503 elif enabled alpha; then
5504
5505     check_cflags -mieee
5506
5507 elif enabled arm; then
5508
5509     enabled msvc && check_cpp_condition thumb stddef.h "defined _M_ARMT"
5510     test_cpp_condition stddef.h "defined __thumb__" && test_cc <<EOF && enable_weak thumb
5511 float func(float a, float b){ return a+b; }
5512 EOF
5513     enabled thumb && check_cflags -mthumb || check_cflags -marm
5514
5515     if check_cpp_condition vfp_args stddef.h "defined __ARM_PCS_VFP"; then
5516         :
5517     elif check_cpp_condition vfp_args stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5518         :
5519     elif ! test_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5520         case "${cross_prefix:-$cc}" in
5521             *hardfloat*) enable vfp_args; fpabi=vfp ;;
5522             *) check_ld "cc" vfp_args <<EOF && fpabi=vfp || fpabi=soft ;;
5523 __asm__ (".eabi_attribute 28, 1");
5524 int main(void) { return 0; }
5525 EOF
5526         esac
5527         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5528     fi
5529
5530     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5531     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5532     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5533     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5534     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5535     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5536     enabled setend  && check_insn setend  'setend be'
5537
5538     [ $target_os = linux ] || [ $target_os = android ] ||
5539         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5540             $ARCH_EXT_LIST_ARM
5541
5542     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5543
5544     check_as as_arch_directive ".arch armv7-a"
5545     check_as as_dn_directive   "ra .dn d0.i16"
5546     check_as as_fpu_directive  ".fpu neon"
5547
5548     # llvm's integrated assembler supports .object_arch from llvm 3.5
5549     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
5550         check_as as_object_arch ".object_arch armv4"
5551
5552     # MS armasm fails to assemble our PIC constructs
5553     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5554
5555 elif enabled mips; then
5556
5557     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5558     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5559     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5560
5561     # Enable minimum ISA based on selected options
5562     if enabled mips64; then
5563         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5564         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5565         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5566     else
5567         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5568         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5569         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5570         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5571     fi
5572
5573     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5574     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5575     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_header msa.h || disable msa
5576     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5577     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5578
5579     if enabled bigendian && enabled msa; then
5580         disable msa
5581     fi
5582
5583 elif enabled parisc; then
5584
5585     if enabled gcc; then
5586         case $($cc -dumpversion) in
5587             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5588         esac
5589     fi
5590
5591 elif enabled ppc; then
5592
5593     enable local_aligned
5594
5595     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5596     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5597     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5598     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5599
5600     if enabled altivec; then
5601         check_cflags -maltivec -mabi=altivec
5602
5603         # check if our compiler supports Motorola AltiVec C API
5604         check_cc altivec altivec.h "vector signed int v1 = (vector signed int) { 0 };
5605                                     vector signed int v2 = (vector signed int) { 1 };
5606                                     v1 = vec_add(v1, v2);"
5607
5608         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5609     fi
5610
5611     if enabled vsx; then
5612         check_cflags -mvsx &&
5613         check_cc vsx altivec.h "int v[4] = { 0 };
5614                                 vector signed int v1 = vec_vsx_ld(0, v);"
5615     fi
5616
5617     if enabled power8; then
5618         check_cpp_condition power8 "altivec.h" "defined(_ARCH_PWR8)"
5619     fi
5620
5621 elif enabled x86; then
5622
5623     check_builtin rdtsc    intrin.h   "__rdtsc()"
5624     check_builtin mm_empty mmintrin.h "_mm_empty()"
5625
5626     enable local_aligned
5627
5628     # check whether EBP is available on x86
5629     # As 'i' is stored on the stack, this program will crash
5630     # if the base pointer is used to access it because the
5631     # base pointer is cleared in the inline assembly code.
5632     check_exec_crash <<EOF && enable ebp_available
5633 volatile int i=0;
5634 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5635 return i;
5636 EOF
5637
5638     # check whether EBX is available on x86
5639     check_inline_asm ebx_available '""::"b"(0)' &&
5640         check_inline_asm ebx_available '"":::"%ebx"'
5641
5642     # check whether xmm clobbers are supported
5643     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5644
5645     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5646         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5647
5648     # check whether binutils is new enough to compile SSSE3/MMXEXT
5649     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5650     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5651
5652     probe_x86asm(){
5653         x86asmexe_probe=$1
5654         if test_cmd $x86asmexe_probe -v; then
5655             x86asmexe=$x86asmexe_probe
5656             x86asm_type=nasm
5657             x86asm_debug="-g -F dwarf"
5658             X86ASMDEP=
5659             X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
5660         elif test_cmd $x86asmexe_probe --version; then
5661             x86asmexe=$x86asmexe_probe
5662             x86asm_type=yasm
5663             x86asm_debug="-g dwarf2"
5664             X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
5665             X86ASM_DEPFLAGS=
5666         fi
5667         check_x86asm x86asm "movbe ecx, [5]"
5668     }
5669
5670     if ! disabled_any asm mmx x86asm; then
5671         disable x86asm
5672         for program in $x86asmexe nasm yasm; do
5673             probe_x86asm $program && break
5674         done
5675         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
5676         X86ASMFLAGS="-f $objformat"
5677         enabled pic               && append X86ASMFLAGS "-DPIC"
5678         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
5679         case "$objformat" in
5680             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
5681         esac
5682
5683         check_x86asm avx512_external "vmovdqa32 [eax]{k1}{z}, zmm0"
5684         check_x86asm avx2_external   "vextracti128 xmm0, ymm0, 0"
5685         check_x86asm xop_external    "vpmacsdd xmm0, xmm1, xmm2, xmm3"
5686         check_x86asm fma4_external   "vfmaddps ymm0, ymm1, ymm2, ymm3"
5687         check_x86asm cpunop          "CPU amdnop"
5688     fi
5689
5690     case "$cpu" in
5691         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5692             disable fast_clz
5693         ;;
5694     esac
5695
5696 fi
5697
5698 check_cc intrinsics_neon arm_neon.h "int16x8_t test = vdupq_n_s16(0)"
5699
5700 check_ldflags -Wl,--as-needed
5701 check_ldflags -Wl,-z,noexecstack
5702
5703 if ! disabled network; then
5704     check_func getaddrinfo $network_extralibs
5705     check_func inet_aton $network_extralibs
5706
5707     check_type netdb.h "struct addrinfo"
5708     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5709     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5710     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5711     check_type poll.h "struct pollfd"
5712     check_type netinet/sctp.h "struct sctp_event_subscribe"
5713     check_struct "sys/socket.h" "struct msghdr" msg_flags
5714     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5715     check_type netinet/in.h "struct sockaddr_in6"
5716     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5717     check_type "sys/types.h sys/socket.h" socklen_t
5718
5719     # Prefer arpa/inet.h over winsock2
5720     if check_header arpa/inet.h ; then
5721         check_func closesocket
5722     elif check_header winsock2.h ; then
5723         check_func_headers winsock2.h closesocket -lws2 &&
5724             network_extralibs="-lws2" ||
5725         { check_func_headers winsock2.h closesocket -lws2_32 &&
5726             network_extralibs="-lws2_32"; } || disable winsock2_h network
5727         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5728
5729         check_type ws2tcpip.h socklen_t
5730         check_type ws2tcpip.h "struct addrinfo"
5731         check_type ws2tcpip.h "struct group_source_req"
5732         check_type ws2tcpip.h "struct ip_mreq_source"
5733         check_type ws2tcpip.h "struct ipv6_mreq"
5734         check_type winsock2.h "struct pollfd"
5735         check_struct winsock2.h "struct sockaddr" sa_len
5736         check_type ws2tcpip.h "struct sockaddr_in6"
5737         check_type ws2tcpip.h "struct sockaddr_storage"
5738     else
5739         disable network
5740     fi
5741 fi
5742
5743 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5744 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5745 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5746 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5747 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5748 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5749 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5750
5751 case "$custom_allocator" in
5752     jemalloc)
5753         # jemalloc by default does not use a prefix
5754         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5755     ;;
5756     tcmalloc)
5757         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
5758         malloc_prefix=tc_
5759     ;;
5760 esac
5761
5762 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5763 check_func  ${malloc_prefix}memalign            && enable memalign
5764 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5765
5766 check_func  access
5767 check_func_headers stdlib.h arc4random
5768 check_lib   clock_gettime time.h clock_gettime || check_lib clock_gettime time.h clock_gettime -lrt
5769 check_func  fcntl
5770 check_func  fork
5771 check_func  gethrtime
5772 check_func  getopt
5773 check_func  getrusage
5774 check_func  gettimeofday
5775 check_func  isatty
5776 check_func  mkstemp
5777 check_func  mmap
5778 check_func  mprotect
5779 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5780 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
5781 check_func  sched_getaffinity
5782 check_func  setrlimit
5783 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5784 check_func  strerror_r
5785 check_func  sysconf
5786 check_func  sysctl
5787 check_func  usleep
5788
5789 check_func_headers conio.h kbhit
5790 check_func_headers io.h setmode
5791 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5792 check_func_headers mach/mach_time.h mach_absolute_time
5793 check_func_headers stdlib.h getenv
5794 check_func_headers sys/stat.h lstat
5795
5796 check_func_headers windows.h GetProcessAffinityMask
5797 check_func_headers windows.h GetProcessTimes
5798 check_func_headers windows.h GetSystemTimeAsFileTime
5799 check_func_headers windows.h LoadLibrary
5800 check_func_headers windows.h MapViewOfFile
5801 check_func_headers windows.h PeekNamedPipe
5802 check_func_headers windows.h SetConsoleTextAttribute
5803 check_func_headers windows.h SetConsoleCtrlHandler
5804 check_func_headers windows.h Sleep
5805 check_func_headers windows.h VirtualAlloc
5806 check_func_headers glob.h glob
5807 enabled xlib &&
5808     check_lib xlib "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5809
5810 check_header direct.h
5811 check_header dirent.h
5812 check_header dxgidebug.h
5813 check_header dxva.h
5814 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5815 check_header io.h
5816 check_header linux/perf_event.h
5817 check_header libcrystalhd/libcrystalhd_if.h
5818 check_header malloc.h
5819 check_header net/udplite.h
5820 check_header poll.h
5821 check_header sys/param.h
5822 check_header sys/resource.h
5823 check_header sys/select.h
5824 check_header sys/time.h
5825 check_header sys/un.h
5826 check_header termios.h
5827 check_header unistd.h
5828 check_header valgrind/valgrind.h
5829 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5830 check_header windows.h
5831 check_header X11/extensions/XvMClib.h
5832 check_header asm/types.h
5833
5834 # it seems there are versions of clang in some distros that try to use the
5835 # gcc headers, which explodes for stdatomic
5836 # so we also check that atomics actually work here
5837 check_builtin stdatomic stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0); foo += bar"
5838
5839 check_lib advapi32 "windows.h"            RegCloseKey          -ladvapi32
5840 check_lib bcrypt   "windows.h bcrypt.h"   BCryptGenRandom      -lbcrypt &&
5841     check_cpp_condition bcrypt bcrypt.h "defined BCRYPT_RNG_ALGORITHM"
5842 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
5843 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
5844 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
5845
5846 check_lib android android/native_window.h ANativeWindow_acquire -landroid
5847 check_lib mediandk "stdint.h media/NdkImage.h" AImage_delete -lmediandk
5848 check_lib camera2ndk "stdbool.h stdint.h camera/NdkCameraManager.h" ACameraManager_create -lcamera2ndk
5849
5850 enabled appkit       && check_apple_framework AppKit
5851 enabled audiotoolbox && check_apple_framework AudioToolbox
5852 enabled avfoundation && check_apple_framework AVFoundation
5853 enabled coreimage    && check_apple_framework CoreImage
5854 enabled videotoolbox && check_apple_framework VideoToolbox
5855
5856 check_apple_framework CoreFoundation
5857 check_apple_framework CoreMedia
5858 check_apple_framework CoreVideo
5859
5860 enabled avfoundation && {
5861     disable coregraphics applicationservices
5862     check_lib coregraphics        CoreGraphics/CoreGraphics.h               CGGetActiveDisplayList "-framework CoreGraphics" ||
5863     check_lib applicationservices ApplicationServices/ApplicationServices.h CGGetActiveDisplayList "-framework ApplicationServices"; }
5864
5865 enabled videotoolbox && {
5866     check_lib coreservices CoreServices/CoreServices.h UTGetOSTypeFromString "-framework CoreServices"
5867     check_func_headers CoreMedia/CMFormatDescription.h kCMVideoCodecType_HEVC "-framework CoreMedia"
5868 }
5869
5870 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5871
5872 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5873 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5874 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5875 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5876 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5877
5878 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
5879 check_type "va/va.h va/va_dec_vp8.h" "VAPictureParameterBufferVP8"
5880 check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
5881 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
5882 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
5883 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
5884 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
5885 check_type "va/va.h va/va_enc_mpeg2.h" "VAEncPictureParameterBufferMPEG2"
5886 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
5887 check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
5888
5889 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5890
5891 if ! disabled ffnvcodec; then
5892     check_pkg_config ffnvcodec "ffnvcodec >= 8.1.24.2" \
5893           "ffnvcodec/nvEncodeAPI.h ffnvcodec/dynlink_cuda.h ffnvcodec/dynlink_cuviddec.h ffnvcodec/dynlink_nvcuvid.h" "" || \
5894         { test_pkg_config ffnvcodec_tmp "ffnvcodec < 8.1" "" "" && check_pkg_config ffnvcodec "ffnvcodec >= 8.0.14.2" \
5895           "ffnvcodec/nvEncodeAPI.h ffnvcodec/dynlink_cuda.h ffnvcodec/dynlink_cuviddec.h ffnvcodec/dynlink_nvcuvid.h" ""; }
5896 fi
5897
5898 check_cpp_condition winrt windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)"
5899
5900 if ! disabled w32threads && ! enabled pthreads; then
5901     check_func_headers "windows.h process.h" _beginthreadex &&
5902         check_type "windows.h" CONDITION_VARIABLE &&
5903         check_type "windows.h" INIT_ONCE &&
5904         enable w32threads || disable w32threads
5905     if ! enabled w32threads && enabled winrt; then
5906         check_func_headers "windows.h" CreateThread &&
5907             enable w32threads || disable w32threads
5908     fi
5909 fi
5910
5911 # check for some common methods of building with pthread support
5912 # do this before the optional library checks as some of them require pthreads
5913 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5914     if check_lib pthreads pthread.h pthread_join   -pthread &&
5915        check_lib pthreads pthread.h pthread_create -pthread; then
5916         add_cflags -pthread
5917     elif check_lib pthreads pthread.h pthread_join   -pthreads &&
5918          check_lib pthreads pthread.h pthread_create -pthreads; then
5919         add_cflags -pthreads
5920     elif check_lib pthreads pthread.h pthread_join   -ldl -pthread &&
5921          check_lib pthreads pthread.h pthread_create -ldl -pthread; then
5922         add_cflags -ldl -pthread
5923     elif check_lib pthreads pthread.h pthread_join   -lpthreadGC2 &&
5924          check_lib pthreads pthread.h pthread_create -lpthreadGC2; then
5925         :
5926     elif check_lib pthreads pthread.h pthread_join   -lpthread &&
5927          check_lib pthreads pthread.h pthread_create -lpthread; then
5928         :
5929     elif check_func pthread_join && check_func pthread_create; then
5930         enable pthreads
5931     fi
5932     check_cc pthreads "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER"
5933
5934     if enabled pthreads; then
5935         check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
5936         check_func pthread_cancel $pthreads_extralibs
5937     fi
5938 fi
5939
5940 enabled  zlib && { check_pkg_config zlib zlib "zlib.h" zlibVersion ||
5941                    check_lib zlib   zlib.h      zlibVersion    -lz; }
5942 enabled bzlib && check_lib bzlib bzlib.h BZ2_bzlibVersion    -lbz2
5943 enabled  lzma && check_lib lzma   lzma.h lzma_version_number -llzma
5944
5945 # On some systems dynamic loading requires no extra linker flags
5946 check_lib libdl dlfcn.h "dlopen dlsym" || check_lib libdl dlfcn.h "dlopen dlsym" -ldl
5947
5948 check_lib libm math.h sin -lm
5949
5950 atan2f_args=2
5951 copysign_args=2
5952 hypot_args=2
5953 ldexpf_args=2
5954 powf_args=2
5955
5956 for func in $MATH_FUNCS; do
5957     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
5958 done
5959
5960 for func in $COMPLEX_FUNCS; do
5961     eval check_complexfunc $func \${${func}_args:-1}
5962 done
5963
5964 # these are off by default, so fail if requested and not available
5965 enabled cuda_sdk          && require cuda_sdk cuda.h cuCtxCreate -lcuda
5966 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
5967 enabled decklink          && { require_header DeckLinkAPI.h &&
5968                                { test_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a060100" || die "ERROR: Decklink API version must be >= 10.6.1."; } }
5969 enabled libndi_newtek     && require_header Processing.NDI.Lib.h
5970 enabled frei0r            && require_header frei0r.h
5971 enabled gmp               && require gmp gmp.h mpz_export -lgmp
5972 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init
5973 enabled jni               && { [ $target_os = "android" ] && check_header jni.h && enabled pthreads || die "ERROR: jni not found"; }
5974 enabled ladspa            && require_header ladspa.h
5975 enabled libaom            && require_pkg_config libaom "aom >= 0.1.0" aom/aom_codec.h aom_codec_version
5976 enabled lv2               && require_pkg_config lv2 lilv-0 "lilv/lilv.h" lilv_world_new
5977 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5978 enabled libass            && require_pkg_config libass libass ass/ass.h ass_library_init
5979 enabled libbluray         && require_pkg_config libbluray libbluray libbluray/bluray.h bd_open
5980 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
5981 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5982                              { check_lib libcelt celt/celt.h celt_decoder_create_custom -lcelt0 ||
5983                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5984 enabled libcaca           && require_pkg_config libcaca caca caca.h caca_create_canvas
5985 enabled libcodec2         && require libcodec2 codec2/codec2.h codec2_create -lcodec2
5986 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
5987 enabled libdrm            && require_pkg_config libdrm libdrm xf86drm.h drmGetVersion
5988 enabled libfdk_aac        && { check_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
5989                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
5990                                  warn "using libfdk without pkg-config"; } }
5991 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"
5992 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_extralibs
5993 enabled fontconfig        && enable libfontconfig
5994 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
5995 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
5996 enabled libfribidi        && require_pkg_config libfribidi fribidi fribidi.h fribidi_version_info
5997 enabled libgme            && { check_pkg_config libgme libgme gme/gme.h gme_new_emu ||
5998                                require libgme gme/gme.h gme_new_emu -lgme -lstdc++; }
5999 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
6000                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
6001                                done || die "ERROR: libgsm not found"; }
6002 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc $pthreads_extralibs
6003 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
6004 # While it may appear that require is being used as a pkg-config
6005 # fallback for libmfx, it is actually being used to detect a different
6006 # installation route altogether.  If libmfx is installed via the Intel
6007 # Media SDK or Intel Media Server Studio, these don't come with
6008 # pkg-config support.  Instead, users should make sure that the build
6009 # can find the libraries and headers through other means.
6010 enabled libmfx            && { check_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit ||
6011                                { require libmfx "mfx/mfxvideo.h" MFXInit "-llibmfx $advapi32_extralibs" && warn "using libmfx without pkg-config"; } }
6012 enabled libmodplug        && require_pkg_config libmodplug libmodplug libmodplug/modplug.h ModPlug_Load
6013 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame $libm_extralibs
6014 enabled libmysofa         && { check_pkg_config libmysofa libmysofa mysofa.h mysofa_load ||
6015                                require libmysofa mysofa.h mysofa_load -lmysofa $zlib_extralibs; }
6016 enabled libnpp            && { check_lib libnpp npp.h nppGetLibVersion -lnppig -lnppicc -lnppc ||
6017                                check_lib libnpp npp.h nppGetLibVersion -lnppi -lnppc ||
6018                                die "ERROR: libnpp not found"; }
6019 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
6020 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
6021 enabled libopencv         && { check_header opencv2/core/core_c.h &&
6022                                { check_pkg_config libopencv opencv opencv2/core/core_c.h cvCreateImageHeader ||
6023                                  require libopencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
6024                                require_pkg_config libopencv opencv opencv/cxcore.h cvCreateImageHeader; }
6025 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
6026 enabled libopenjpeg       && { check_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version ||
6027                                { require_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } }
6028 enabled libopenmpt        && require_pkg_config libopenmpt "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create -lstdc++ && append libopenmpt_extralibs "-lstdc++"
6029 enabled libopus           && {
6030     enabled libopus_decoder && {
6031         require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
6032     }
6033     enabled libopus_encoder && {
6034         require_pkg_config libopus opus opus_multistream.h opus_multistream_surround_encoder_create
6035     }
6036 }
6037 enabled libpulse          && require_pkg_config libpulse libpulse pulse/pulseaudio.h pa_context_new
6038 enabled librsvg           && require_pkg_config librsvg librsvg-2.0 librsvg-2.0/librsvg/rsvg.h rsvg_handle_render_cairo
6039 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
6040 enabled librubberband     && require_pkg_config librubberband "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new -lstdc++ && append librubberband_extralibs "-lstdc++"
6041 enabled libshine          && require_pkg_config libshine shine shine/layer3.h shine_encode_buffer
6042 enabled libsmbclient      && { check_pkg_config libsmbclient smbclient libsmbclient.h smbc_init ||
6043                                require libsmbclient libsmbclient.h smbc_init -lsmbclient; }
6044 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy -lstdc++
6045 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
6046 enabled libssh            && require_pkg_config libssh libssh libssh/sftp.h sftp_init
6047 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init
6048 enabled libsrt            && require_pkg_config libsrt "srt >= 1.2.0" srt/srt.h srt_socket
6049 enabled libtesseract      && require_pkg_config libtesseract tesseract tesseract/capi.h TessBaseAPICreate
6050 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
6051 enabled libtls            && require_pkg_config libtls libtls tls.h tls_configure
6052 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
6053                              { check_lib libtwolame twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
6054                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
6055 enabled libv4l2           && require_pkg_config libv4l2 libv4l2 libv4l2.h v4l2_ioctl
6056 enabled libvidstab        && require_pkg_config libvidstab "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
6057 enabled libvmaf           && require_pkg_config libvmaf "libvmaf >= 0.6.2" libvmaf.h compute_vmaf
6058 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
6059 enabled libvorbis         && require_pkg_config libvorbis vorbis vorbis/codec.h vorbis_info_init &&
6060                              require_pkg_config libvorbisenc vorbisenc vorbis/vorbisenc.h vorbis_encode_init
6061
6062 enabled libvpx            && {
6063     enabled libvpx_vp8_decoder && {
6064         check_pkg_config libvpx_vp8_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
6065             check_lib libvpx_vp8_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_dec_init_ver VPX_IMG_FMT_HIGHBITDEPTH" -lvpx ||
6066                 die "ERROR: libvpx decoder version must be >=1.4.0";
6067     }
6068     enabled libvpx_vp8_encoder && {
6069         check_pkg_config libvpx_vp8_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
6070             check_lib libvpx_vp8_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VPX_IMG_FMT_HIGHBITDEPTH" -lvpx ||
6071                 die "ERROR: libvpx encoder version must be >=1.4.0";
6072     }
6073     enabled libvpx_vp9_decoder && {
6074         check_pkg_config libvpx_vp9_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
6075             check_lib libvpx_vp9_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx VPX_IMG_FMT_HIGHBITDEPTH" "-lvpx $libm_extralibs"
6076     }
6077     enabled libvpx_vp9_encoder && {
6078         check_pkg_config libvpx_vp9_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
6079             check_lib libvpx_vp9_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VPX_IMG_FMT_HIGHBITDEPTH" "-lvpx $libm_extralibs"
6080     }
6081     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
6082         die "libvpx enabled but no supported decoders found"
6083     fi
6084 }
6085
6086 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
6087 enabled libwebp           && {
6088     enabled libwebp_encoder      && require_pkg_config libwebp "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
6089     enabled libwebp_anim_encoder && check_pkg_config libwebp_anim_encoder "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit; }
6090 enabled libx264           && { check_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode ||
6091                                { require libx264 "stdint.h x264.h" x264_encoder_encode "-lx264 $pthreads_extralibs $libm_extralibs" &&
6092                                  warn "using libx264 without pkg-config"; } } &&
6093                              require_cpp_condition x264.h "X264_BUILD >= 118" &&
6094                              check_cpp_condition libx262 x264.h "X264_MPEG2"
6095 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
6096                              require_cpp_condition x265.h "X265_BUILD >= 68"
6097 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode "-lxavs $pthreads_extralibs $libm_extralibs"
6098 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
6099 enabled libzimg           && require_pkg_config libzimg "zimg >= 2.7.0" zimg.h zimg_get_api_version
6100 enabled libzmq            && require_pkg_config libzmq libzmq zmq.h zmq_ctx_new
6101 enabled libzvbi           && require_pkg_config libzvbi zvbi-0.2 libzvbi.h vbi_decoder_new &&
6102                              { test_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
6103                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
6104 enabled libxml2           && require_pkg_config libxml2 libxml-2.0 libxml2/libxml/xmlversion.h xmlCheckVersion
6105 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
6106 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
6107                                { ! enabled cross_compile &&
6108                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
6109                                  add_ldflags -L/opt/vc/lib/ &&
6110                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
6111                                die "ERROR: mmal not found" &&
6112                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
6113 enabled openal            && { { for al_extralibs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
6114                                check_lib openal 'AL/al.h' alGetError "${al_extralibs}" && break; done } ||
6115                                die "ERROR: openal not found"; } &&
6116                              { test_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
6117                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
6118 enabled opencl            && { check_lib opencl OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
6119                                check_lib opencl CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
6120                                die "ERROR: opencl not found"; } &&
6121                              { test_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
6122                                test_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
6123                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
6124 enabled opengl            && { check_lib opengl GL/glx.h glXGetProcAddress "-lGL" ||
6125                                check_lib opengl windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
6126                                check_lib opengl OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
6127                                check_lib opengl ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
6128                                die "ERROR: opengl not found."
6129                              }
6130 enabled omx               && require_header OMX_Core.h
6131 enabled omx_rpi           && { check_header OMX_Core.h ||
6132                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_header OMX_Core.h ; } ||
6133                                die "ERROR: OpenMAX IL headers not found"; } && enable omx
6134 enabled openssl           && { check_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
6135                                check_pkg_config openssl openssl openssl/ssl.h SSL_library_init ||
6136                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
6137                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
6138                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
6139                                die "ERROR: openssl not found"; }
6140 enabled rkmpp             && { require_pkg_config rkmpp rockchip_mpp  rockchip/rk_mpi.h mpp_create &&
6141                                require_pkg_config rockchip_mpp "rockchip_mpp >= 1.3.7" rockchip/rk_mpi.h mpp_create &&
6142                                { enabled libdrm ||
6143                                  die "ERROR: rkmpp requires --enable-libdrm"; }
6144                              }
6145 enabled vapoursynth       && require_pkg_config vapoursynth "vapoursynth-script >= 42" VSScript.h vsscript_init
6146
6147
6148 if enabled gcrypt; then
6149     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
6150     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
6151         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
6152         gcrypt_extralibs=$("${GCRYPT_CONFIG}" --libs)
6153         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_extralibs ||
6154             die "ERROR: gcrypt not found"
6155         add_cflags $gcrypt_cflags
6156     else
6157         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
6158     fi
6159 fi
6160
6161 if enabled sdl2; then
6162     SDL2_CONFIG="${cross_prefix}sdl2-config"
6163     test_pkg_config sdl2 "sdl2 >= 2.0.1 sdl2 < 2.1.0" SDL_events.h SDL_PollEvent
6164     if disabled sdl2 && "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
6165         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
6166         sdl2_extralibs=$("${SDL2_CONFIG}" --libs)
6167         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
6168         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
6169         check_func_headers SDL_events.h SDL_PollEvent $sdl2_extralibs $sdl2_cflags &&
6170             enable sdl2
6171     fi
6172     if test $target_os = "mingw32"; then
6173         sdl2_extralibs=$(filter_out '-mwindows' $sdl2_extralibs)
6174     fi
6175 fi
6176
6177 if enabled decklink; then
6178     case $target_os in
6179         mingw32*|mingw64*|win32|win64)
6180             decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
6181             decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
6182             ;;
6183     esac
6184 fi
6185
6186 enabled securetransport &&
6187     check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
6188     check_lib securetransport "Security/SecureTransport.h Security/Security.h" "SSLCreateContext" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" ||
6189         disable securetransport
6190
6191 enabled securetransport &&
6192     check_func SecItemImport "-Wl,-framework,CoreFoundation -Wl,-framework,Security"
6193
6194 enabled schannel &&
6195     check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
6196     test_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" &&
6197     schannel_extralibs="-lsecur32" ||
6198         disable schannel
6199
6200 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
6201 enabled makeinfo \
6202     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
6203     && enable makeinfo_html || disable makeinfo_html
6204 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
6205 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
6206 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
6207 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
6208
6209 # check V4L2 codecs available in the API
6210 check_header linux/fb.h
6211 check_header linux/videodev2.h
6212 test_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6213 check_cc v4l2_m2m linux/videodev2.h "int i = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_VIDEO_M2M | V4L2_BUF_FLAG_LAST;"
6214 check_cc vc1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VC1_ANNEX_G;"
6215 check_cc mpeg1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG1;"
6216 check_cc mpeg2_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG2;"
6217 check_cc mpeg4_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG4;"
6218 check_cc hevc_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_HEVC;"
6219 check_cc h263_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H263;"
6220 check_cc h264_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H264;"
6221 check_cc vp8_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP8;"
6222 check_cc vp9_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP9;"
6223
6224 check_header sys/videoio.h
6225 test_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6226
6227 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
6228 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
6229 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
6230 # w32api 3.12 had it defined wrong
6231 check_cpp_condition vfwcap_defines vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER"
6232
6233 check_type "dshow.h" IBaseFilter
6234
6235 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
6236 check_header "dev/bktr/ioctl_meteor.h dev/bktr/ioctl_bt848.h"                   ||
6237     check_header "machine/ioctl_meteor.h machine/ioctl_bt848.h"                 ||
6238     check_header "dev/video/meteor/ioctl_meteor.h dev/video/bktr/ioctl_bt848.h" ||
6239     check_header "dev/ic/bt8xx.h"
6240
6241 if check_struct sys/soundcard.h audio_buf_info bytes; then
6242     enable_sanitized sys/soundcard.h
6243 else
6244     test_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_sanitized sys/soundcard.h
6245     #include <sys/soundcard.h>
6246     audio_buf_info abc;
6247 EOF
6248 fi
6249
6250 enabled alsa && check_pkg_config alsa alsa "alsa/asoundlib.h" snd_pcm_htimestamp ||
6251     check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound
6252
6253 enabled libjack &&
6254     require_pkg_config libjack jack jack/jack.h jack_port_get_latency_range
6255
6256 enabled sndio && check_lib sndio sndio.h sio_open -lsndio
6257
6258 if enabled libcdio; then
6259     check_pkg_config libcdio libcdio_paranoia "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open ||
6260     check_pkg_config libcdio libcdio_paranoia "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open ||
6261     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6262     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6263     die "ERROR: No usable libcdio/cdparanoia found"
6264 fi
6265
6266 enabled libxcb && check_pkg_config libxcb "xcb >= 1.4" xcb/xcb.h xcb_connect ||
6267     disable libxcb_shm libxcb_shape libxcb_xfixes
6268
6269 if enabled libxcb; then
6270     enabled libxcb_shm    && check_pkg_config libxcb_shm    xcb-shm    xcb/shm.h    xcb_shm_attach
6271     enabled libxcb_shape  && check_pkg_config libxcb_shape  xcb-shape  xcb/shape.h  xcb_shape_get_rectangles
6272     enabled libxcb_xfixes && check_pkg_config libxcb_xfixes xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image
6273 fi
6274
6275 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6276
6277 # d3d11va requires linking directly to dxgi and d3d11 if not building for
6278 # the desktop api partition
6279 test_cpp <<EOF && enable uwp && d3d11va_extralibs="-ldxgi -ld3d11"
6280 #ifdef WINAPI_FAMILY
6281 #include <winapifamily.h>
6282 #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
6283 #error desktop, not uwp
6284 #else
6285 // WINAPI_FAMILY_APP, WINAPI_FAMILY_PHONE_APP => UWP
6286 #endif
6287 #else
6288 #error no family set
6289 #endif
6290 EOF
6291
6292 enabled vaapi &&
6293     check_lib vaapi va/va.h vaInitialize -lva
6294
6295 enabled vaapi &&
6296     check_cc vaapi "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)"
6297
6298 if enabled vaapi; then
6299     check_lib vaapi_drm "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm
6300     check_lib vaapi_x11 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 -lX11
6301 fi
6302
6303 enabled vaapi &&
6304     check_cpp_condition vaapi_1 "va/va.h" "VA_CHECK_VERSION(1, 0, 0)"
6305
6306 if enabled_all opencl libdrm ; then
6307     check_type "CL/cl_intel.h" "clCreateImageFromFdINTEL_fn" &&
6308         enable opencl_drm_beignet
6309     check_func_headers "CL/cl_ext.h" clImportMemoryARM &&
6310         enable opencl_drm_arm
6311 fi
6312
6313 if enabled_all opencl vaapi ; then
6314     enabled opencl_drm_beignet && enable opencl_vaapi_beignet
6315     if enabled libmfx ; then
6316         check_type "CL/cl.h CL/va_ext.h" "clCreateFromVA_APIMediaSurfaceINTEL_fn" &&
6317             enable opencl_vaapi_intel_media
6318     fi
6319 fi
6320
6321 if enabled_all opencl dxva2 ; then
6322     check_type "CL/cl_dx9_media_sharing.h" cl_dx9_surface_info_khr &&
6323         enable opencl_dxva2
6324 fi
6325
6326 if enabled_all opencl d3d11va ; then
6327     check_type "CL/cl_d3d11.h" clGetDeviceIDsFromD3D11KHR_fn &&
6328         enable opencl_d3d11
6329 fi
6330
6331 enabled vdpau &&
6332     check_cpp_condition vdpau vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP"
6333
6334 enabled vdpau &&
6335     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
6336
6337 enabled crystalhd && check_lib crystalhd "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd
6338
6339 if enabled x86; then
6340     case $target_os in
6341         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6342             ;;
6343         *)
6344             disable ffnvcodec cuvid nvdec nvenc
6345             ;;
6346     esac
6347 else
6348     disable ffnvcodec cuvid nvdec nvenc
6349 fi
6350
6351 enabled ffnvcodec && enable cuda
6352
6353 enabled nvenc &&
6354     test_cc -I$source_path <<EOF || disable nvenc
6355 #include <ffnvcodec/nvEncodeAPI.h>
6356 NV_ENCODE_API_FUNCTION_LIST flist;
6357 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6358 int main(void) { return 0; }
6359 EOF
6360
6361 enabled amf &&
6362     check_cpp_condition amf "AMF/core/Version.h" \
6363         "(AMF_VERSION_MAJOR << 48 | AMF_VERSION_MINOR << 32 | AMF_VERSION_RELEASE << 16 | AMF_VERSION_BUILD_NUM) >= 0x0001000400040001"
6364
6365 # Funny iconv installations are not unusual, so check it after all flags have been set
6366 if enabled libc_iconv; then
6367     check_func_headers iconv.h iconv
6368 elif enabled iconv; then
6369     check_func_headers iconv.h iconv || check_lib iconv iconv.h iconv -liconv
6370 fi
6371
6372 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6373
6374 # add some useful compiler flags if supported
6375 check_cflags -Wdeclaration-after-statement
6376 check_cflags -Wall
6377 check_cflags -Wdisabled-optimization
6378 check_cflags -Wpointer-arith
6379 check_cflags -Wredundant-decls
6380 check_cflags -Wwrite-strings
6381 check_cflags -Wtype-limits
6382 check_cflags -Wundef
6383 check_cflags -Wmissing-prototypes
6384 check_cflags -Wno-pointer-to-int-cast
6385 check_cflags -Wstrict-prototypes
6386 check_cflags -Wempty-body
6387
6388 if enabled extra_warnings; then
6389     check_cflags -Wcast-qual
6390     check_cflags -Wextra
6391     check_cflags -Wpedantic
6392 fi
6393
6394 check_disable_warning(){
6395     warning_flag=-W${1#-Wno-}
6396     test_cflags $unknown_warning_flags $warning_flag && add_cflags $1
6397 }
6398
6399 test_cflags -Werror=unused-command-line-argument &&
6400     append unknown_warning_flags "-Werror=unused-command-line-argument"
6401 test_cflags -Werror=unknown-warning-option &&
6402     append unknown_warning_flags "-Werror=unknown-warning-option"
6403
6404 check_disable_warning -Wno-parentheses
6405 check_disable_warning -Wno-switch
6406 check_disable_warning -Wno-format-zero-length
6407 check_disable_warning -Wno-pointer-sign
6408 check_disable_warning -Wno-unused-const-variable
6409 check_disable_warning -Wno-bool-operation
6410
6411 check_disable_warning_headers(){
6412     warning_flag=-W${1#-Wno-}
6413     test_cflags $warning_flag && add_cflags_headers $1
6414 }
6415
6416 check_disable_warning_headers -Wno-deprecated-declarations
6417 check_disable_warning_headers -Wno-unused-variable
6418
6419 test_cc <<EOF && enable blocks_extension
6420 void (^block)(void);
6421 EOF
6422
6423 # add some linker flags
6424 check_ldflags -Wl,--warn-common
6425 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6426 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir && add_ldsoflags -Wl,-rpath,$libdir
6427 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6428
6429 # add some strip flags
6430 check_stripflags -x
6431
6432 enabled neon_clobber_test &&
6433     check_ldflags -Wl,--wrap,avcodec_open2              \
6434                   -Wl,--wrap,avcodec_decode_audio4      \
6435                   -Wl,--wrap,avcodec_decode_video2      \
6436                   -Wl,--wrap,avcodec_decode_subtitle2   \
6437                   -Wl,--wrap,avcodec_encode_audio2      \
6438                   -Wl,--wrap,avcodec_encode_video2      \
6439                   -Wl,--wrap,avcodec_encode_subtitle    \
6440                   -Wl,--wrap,avcodec_send_packet        \
6441                   -Wl,--wrap,avcodec_receive_packet     \
6442                   -Wl,--wrap,avcodec_send_frame         \
6443                   -Wl,--wrap,avcodec_receive_frame      \
6444                   -Wl,--wrap,swr_convert                \
6445                   -Wl,--wrap,avresample_convert ||
6446     disable neon_clobber_test
6447
6448 enabled xmm_clobber_test &&
6449     check_ldflags -Wl,--wrap,avcodec_open2              \
6450                   -Wl,--wrap,avcodec_decode_audio4      \
6451                   -Wl,--wrap,avcodec_decode_video2      \
6452                   -Wl,--wrap,avcodec_decode_subtitle2   \
6453                   -Wl,--wrap,avcodec_encode_audio2      \
6454                   -Wl,--wrap,avcodec_encode_video2      \
6455                   -Wl,--wrap,avcodec_encode_subtitle    \
6456                   -Wl,--wrap,avcodec_send_packet        \
6457                   -Wl,--wrap,avcodec_receive_packet     \
6458                   -Wl,--wrap,avcodec_send_frame         \
6459                   -Wl,--wrap,avcodec_receive_frame      \
6460                   -Wl,--wrap,swr_convert                \
6461                   -Wl,--wrap,avresample_convert         \
6462                   -Wl,--wrap,sws_scale ||
6463     disable xmm_clobber_test
6464
6465 check_ld "cc" proper_dce <<EOF
6466 extern const int array[512];
6467 static inline int func(void) { return array[0]; }
6468 int main(void) { return 0; }
6469 EOF
6470
6471 if enabled proper_dce; then
6472     echo "X { local: *; };" > $TMPV
6473     if test_ldflags -Wl,${version_script},$TMPV; then
6474         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6475         quotes='""'
6476         test_cc <<EOF && enable symver_asm_label
6477 void ff_foo(void) __asm__ ("av_foo@VERSION");
6478 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6479 EOF
6480         test_cc <<EOF && enable symver_gnu_asm
6481 __asm__(".symver ff_foo,av_foo@VERSION");
6482 void ff_foo(void) {}
6483 EOF
6484     fi
6485 fi
6486
6487 if [ -z "$optflags" ]; then
6488     if enabled small; then
6489         optflags=$cflags_size
6490     elif enabled optimizations; then
6491         optflags=$cflags_speed
6492     else
6493         optflags=$cflags_noopt
6494     fi
6495 fi
6496
6497 if [ -z "$nvccflags" ]; then
6498     nvccflags=$nvccflags_default
6499 fi
6500
6501 if enabled x86_64 || enabled ppc64 || enabled aarch64; then
6502     nvccflags="$nvccflags -m64"
6503 else
6504     nvccflags="$nvccflags -m32"
6505 fi
6506
6507 check_optflags(){
6508     check_cflags "$@"
6509     enabled lto && check_ldflags "$@"
6510 }
6511
6512 check_optflags $optflags
6513 check_optflags -fno-math-errno
6514 check_optflags -fno-signed-zeros
6515
6516 if enabled lto; then
6517     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6518     check_cflags  -flto
6519     check_ldflags -flto $cpuflags
6520     disable inline_asm_direct_symbol_refs
6521 fi
6522
6523 enabled ftrapv && check_cflags -ftrapv
6524
6525 test_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6526 int x;
6527 EOF
6528
6529
6530 if enabled icc; then
6531     # Just warnings, no remarks
6532     check_cflags -w1
6533     # -wd: Disable following warnings
6534     # 144, 167, 556: -Wno-pointer-sign
6535     # 188: enumerated type mixed with another type
6536     # 1292: attribute "foo" ignored
6537     # 1419: external declaration in primary source file
6538     # 10006: ignoring unknown option -fno-signed-zeros
6539     # 10148: ignoring unknown option -Wno-parentheses
6540     # 10156: ignoring option '-W'; no argument required
6541     # 13200: No EMMS instruction before call to function
6542     # 13203: No EMMS instruction before return from function
6543     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6544     # 11030: Warning unknown option --as-needed
6545     # 10156: ignoring option '-export'; no argument required
6546     check_ldflags -wd10156,11030
6547     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6548     enable ebp_available
6549     # The test above does not test linking
6550     enabled lto && disable symver_asm_label
6551     if enabled x86_32; then
6552         icc_version=$($cc -dumpversion)
6553         test ${icc_version%%.*} -ge 11 &&
6554             check_cflags -falign-stack=maintain-16-byte ||
6555             disable aligned_stack
6556     fi
6557 elif enabled gcc; then
6558     check_optflags -fno-tree-vectorize
6559     check_cflags -Werror=format-security
6560     check_cflags -Werror=implicit-function-declaration
6561     check_cflags -Werror=missing-prototypes
6562     check_cflags -Werror=return-type
6563     check_cflags -Werror=vla
6564     check_cflags -Wformat
6565     check_cflags -fdiagnostics-color=auto
6566     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6567     if enabled x86_32; then
6568         case $target_os in
6569         *bsd*)
6570             # BSDs don't guarantee a 16 byte aligned stack, but we can
6571             # request GCC to try to maintain 16 byte alignment throughout
6572             # function calls. Library entry points that might call assembly
6573             # functions align the stack. (The parameter means 2^4 bytes.)
6574             check_cflags -mpreferred-stack-boundary=4
6575             ;;
6576         esac
6577     fi
6578 elif enabled llvm_gcc; then
6579     check_cflags -mllvm -stack-alignment=16
6580 elif enabled clang; then
6581     if enabled x86_32; then
6582         # Clang doesn't support maintaining alignment without assuming the
6583         # same alignment in every function. If 16 byte alignment would be
6584         # enabled, one would also have to either add attribute_align_arg on
6585         # every single entry point into the libraries or enable -mstackrealign
6586         # (doing stack realignment in every single function).
6587         case $target_os in
6588         mingw32|win32|*bsd*)
6589             disable aligned_stack
6590             ;;
6591         *)
6592             check_cflags -mllvm -stack-alignment=16
6593             check_cflags -mstack-alignment=16
6594             ;;
6595         esac
6596     else
6597         check_cflags -mllvm -stack-alignment=16
6598         check_cflags -mstack-alignment=16
6599     fi
6600     check_cflags -Qunused-arguments
6601     check_cflags -Werror=implicit-function-declaration
6602     check_cflags -Werror=missing-prototypes
6603     check_cflags -Werror=return-type
6604 elif enabled cparser; then
6605     add_cflags -Wno-missing-variable-declarations
6606     add_cflags -Wno-empty-statement
6607 elif enabled armcc; then
6608     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6609     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6610     # 2523: use of inline assembly is deprecated
6611     add_cflags -W${armcc_opt},--diag_suppress=2523
6612     add_cflags -W${armcc_opt},--diag_suppress=1207
6613     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6614     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6615     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6616     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6617 elif enabled pathscale; then
6618     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6619     disable inline_asm
6620 elif enabled_any msvc icl; then
6621     enabled x86_32 && disable aligned_stack
6622     enabled_all x86_32 debug && add_cflags -Oy-
6623     enabled debug && add_ldflags -debug
6624     enable pragma_deprecated
6625     if enabled icl; then
6626         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6627         # (correctly) on icl 13.x.
6628         test_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6629             add_cflags -Qansi-alias
6630         # Some inline asm is not compilable in debug
6631         if enabled debug; then
6632             disable ebp_available
6633             disable ebx_available
6634         fi
6635     fi
6636     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6637     check_cpp_condition log2 crtversion.h "_VC_CRT_MAJOR_VERSION >= 12"
6638     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6639     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6640     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6641     # MSVC 2013 and newer can handle it fine.
6642     # If this declspec fails, force including stdlib.h before the restrict redefinition
6643     # happens in config.h.
6644     if [ $restrict_keyword != restrict ]; then
6645         test_cc <<EOF || add_cflags -FIstdlib.h
6646 __declspec($restrict_keyword) void *foo(int);
6647 EOF
6648     fi
6649     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6650     # Issue has been fixed in MSVC v19.00.24218.
6651     test_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6652         check_cflags -d2SSAOptimizer-
6653     # enable utf-8 source processing on VS2015 U2 and newer
6654     test_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6655         add_cflags -utf-8
6656 fi
6657
6658 for pfx in "" host_; do
6659     varname=${pfx%_}cc_type
6660     eval "type=\$$varname"
6661     if [ "$type" = "msvc" ]; then
6662         test_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6663 static inline int foo(int a) { return a; }
6664 EOF
6665     fi
6666 done
6667
6668 case $as_type in
6669     clang)
6670         add_asflags -Qunused-arguments
6671     ;;
6672 esac
6673
6674 case $ld_type in
6675     clang)
6676         check_ldflags -Qunused-arguments
6677     ;;
6678 esac
6679
6680 enable frame_thread_encoder
6681
6682 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6683
6684 check_deps $CONFIG_LIST       \
6685            $CONFIG_EXTRA      \
6686            $HAVE_LIST         \
6687            $ALL_COMPONENTS    \
6688
6689 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"
6690 enabled avresample && warn "Building with deprecated library libavresample"
6691
6692 if test $target_os = "haiku"; then
6693     disable memalign
6694     disable posix_memalign
6695 fi
6696
6697 flatten_extralibs(){
6698     unset nested_entries
6699     list_name=$1
6700     eval list=\$${1}
6701     for entry in $list; do
6702         entry_copy=$entry
6703         resolve entry_copy
6704         append nested_entries $(filter '*_extralibs' $entry_copy)
6705         flat_entries=$(filter_out '*_extralibs' $entry_copy)
6706         eval $entry="\$flat_entries"
6707     done
6708     append $list_name "$nested_entries"
6709
6710     resolve nested_entries
6711     if test -n "$(filter '*_extralibs' $nested_entries)"; then
6712         flatten_extralibs $list_name
6713     fi
6714 }
6715
6716 flatten_extralibs_wrapper(){
6717     list_name=$1
6718     flatten_extralibs $list_name
6719     unique $list_name
6720     resolve $list_name
6721     eval $list_name=\$\(\$ldflags_filter \$$list_name\)
6722     eval printf \''%s'\' \""\$$list_name"\"
6723 }
6724
6725 for linkunit in $LIBRARY_LIST; do
6726     unset current_extralibs
6727     eval components=\$$(toupper ${linkunit})_COMPONENTS_LIST
6728     for comp in ${components}; do
6729         enabled $comp || continue
6730         comp_extralibs="${comp}_extralibs"
6731         append current_extralibs $comp_extralibs
6732     done
6733     eval prepend ${linkunit}_extralibs $current_extralibs
6734 done
6735
6736 for linkunit in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
6737     eval ${linkunit}_extralibs=\$\(flatten_extralibs_wrapper ${linkunit}_extralibs\)
6738 done
6739
6740 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6741
6742 for thread in $THREADS_LIST; do
6743     if enabled $thread; then
6744         test -n "$thread_type" &&
6745             die "ERROR: Only one thread type must be selected." ||
6746             thread_type="$thread"
6747     fi
6748 done
6749
6750 if disabled stdatomic; then
6751     if enabled atomics_gcc; then
6752         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
6753     elif enabled atomics_win32; then
6754         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
6755     elif enabled atomics_suncc; then
6756         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
6757     elif enabled pthreads; then
6758         add_compat atomics/pthread/stdatomic.o
6759         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
6760     else
6761         enabled threads && die "Threading is enabled, but no atomics are available"
6762         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
6763     fi
6764 fi
6765
6766 # Check if requested libraries were found.
6767 for lib in $AUTODETECT_LIBS; do
6768     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
6769 done
6770
6771 enabled zlib && add_cppflags -DZLIB_CONST
6772
6773 # conditional library dependencies, in linking order
6774 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6775 enabled afir_filter         && prepend avfilter_deps "avcodec"
6776 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6777 enabled aresample_filter    && prepend avfilter_deps "swresample"
6778 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6779 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6780 enabled convolve_filter     && prepend avfilter_deps "avcodec"
6781 enabled deconvolve_filter   && prepend avfilter_deps "avcodec"
6782 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6783 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6784 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6785 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6786 enabled firequalizer_filter && prepend avfilter_deps "avcodec"
6787 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6788 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6789 enabled pan_filter          && prepend avfilter_deps "swresample"
6790 enabled pp_filter           && prepend avfilter_deps "postproc"
6791 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6792 enabled resample_filter && prepend avfilter_deps "avresample"
6793 enabled sab_filter          && prepend avfilter_deps "swscale"
6794 enabled scale_filter    && prepend avfilter_deps "swscale"
6795 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6796 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6797 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6798 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6799 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6800 enabled signature_filter    && prepend avfilter_deps "avcodec avformat"
6801 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6802 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6803 enabled spp_filter          && prepend avfilter_deps "avcodec"
6804 enabled srcnn_filter        && prepend avfilter_deps "avformat"
6805 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6806 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6807 enabled zoompan_filter      && prepend avfilter_deps "swscale"
6808
6809 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6810
6811 #FIXME
6812 enabled sdl2_outdev     && add_cflags $(filter_out '-Dmain=SDL_main' $sdl2_cflags)
6813
6814 enabled opus_decoder    && prepend avcodec_deps "swresample"
6815
6816 expand_deps(){
6817     lib_deps=${1}_deps
6818     eval "deps=\$$lib_deps"
6819     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
6820     unique $lib_deps
6821 }
6822
6823 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6824 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6825
6826 map 'expand_deps $v' $LIBRARY_LIST
6827
6828 if test "$quiet" != "yes"; then
6829
6830 echo "install prefix            $prefix"
6831 echo "source path               $source_path"
6832 echo "C compiler                $cc"
6833 echo "C library                 $libc_type"
6834 if test "$host_cc" != "$cc"; then
6835     echo "host C compiler           $host_cc"
6836     echo "host C library            $host_libc_type"
6837 fi
6838 echo "ARCH                      $arch ($cpu)"
6839 if test "$build_suffix" != ""; then
6840     echo "build suffix              $build_suffix"
6841 fi
6842 if test "$progs_suffix" != ""; then
6843     echo "progs suffix              $progs_suffix"
6844 fi
6845 if test "$extra_version" != ""; then
6846     echo "version string suffix     $extra_version"
6847 fi
6848 echo "big-endian                ${bigendian-no}"
6849 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6850 if enabled x86; then
6851     echo "standalone assembly       ${x86asm-no}"
6852     echo "x86 assembler             ${x86asmexe}"
6853     echo "MMX enabled               ${mmx-no}"
6854     echo "MMXEXT enabled            ${mmxext-no}"
6855     echo "3DNow! enabled            ${amd3dnow-no}"
6856     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6857     echo "SSE enabled               ${sse-no}"
6858     echo "SSSE3 enabled             ${ssse3-no}"
6859     echo "AESNI enabled             ${aesni-no}"
6860     echo "AVX enabled               ${avx-no}"
6861     echo "AVX2 enabled              ${avx2-no}"
6862     echo "AVX-512 enabled           ${avx512-no}"
6863     echo "XOP enabled               ${xop-no}"
6864     echo "FMA3 enabled              ${fma3-no}"
6865     echo "FMA4 enabled              ${fma4-no}"
6866     echo "i686 features enabled     ${i686-no}"
6867     echo "CMOV is fast              ${fast_cmov-no}"
6868     echo "EBX available             ${ebx_available-no}"
6869     echo "EBP available             ${ebp_available-no}"
6870 fi
6871 if enabled aarch64; then
6872     echo "NEON enabled              ${neon-no}"
6873     echo "VFP enabled               ${vfp-no}"
6874 fi
6875 if enabled arm; then
6876     echo "ARMv5TE enabled           ${armv5te-no}"
6877     echo "ARMv6 enabled             ${armv6-no}"
6878     echo "ARMv6T2 enabled           ${armv6t2-no}"
6879     echo "VFP enabled               ${vfp-no}"
6880     echo "NEON enabled              ${neon-no}"
6881     echo "THUMB enabled             ${thumb-no}"
6882 fi
6883 if enabled mips; then
6884     echo "MIPS FPU enabled          ${mipsfpu-no}"
6885     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
6886     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
6887     echo "MIPS MSA enabled          ${msa-no}"
6888     echo "LOONGSON MMI enabled      ${mmi-no}"
6889 fi
6890 if enabled ppc; then
6891     echo "AltiVec enabled           ${altivec-no}"
6892     echo "VSX enabled               ${vsx-no}"
6893     echo "POWER8 enabled            ${power8-no}"
6894     echo "PPC 4xx optimizations     ${ppc4xx-no}"
6895     echo "dcbzl available           ${dcbzl-no}"
6896 fi
6897 echo "debug symbols             ${debug-no}"
6898 echo "strip symbols             ${stripping-no}"
6899 echo "optimize for size         ${small-no}"
6900 echo "optimizations             ${optimizations-no}"
6901 echo "static                    ${static-no}"
6902 echo "shared                    ${shared-no}"
6903 echo "postprocessing support    ${postproc-no}"
6904 echo "network support           ${network-no}"
6905 echo "threading support         ${thread_type-no}"
6906 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
6907 echo "texi2html enabled         ${texi2html-no}"
6908 echo "perl enabled              ${perl-no}"
6909 echo "pod2man enabled           ${pod2man-no}"
6910 echo "makeinfo enabled          ${makeinfo-no}"
6911 echo "makeinfo supports HTML    ${makeinfo_html-no}"
6912 test -n "$random_seed" &&
6913     echo "random seed               ${random_seed}"
6914 echo
6915
6916 echo "External libraries:"
6917 print_enabled '' $EXTERNAL_LIBRARY_LIST $EXTERNAL_AUTODETECT_LIBRARY_LIST | print_in_columns
6918 echo
6919
6920 echo "External libraries providing hardware acceleration:"
6921 print_enabled '' $HWACCEL_LIBRARY_LIST $HWACCEL_AUTODETECT_LIBRARY_LIST | print_in_columns
6922 echo
6923
6924 echo "Libraries:"
6925 print_enabled '' $LIBRARY_LIST | print_in_columns
6926 echo
6927
6928 echo "Programs:"
6929 print_enabled '' $PROGRAM_LIST | print_in_columns
6930 echo
6931
6932 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
6933     echo "Enabled ${type}s:"
6934     eval list=\$$(toupper $type)_LIST
6935     print_enabled '_*' $list | print_in_columns
6936     echo
6937 done
6938
6939 if test -n "$ignore_tests"; then
6940     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
6941     echo "Ignored FATE tests:"
6942     echo $ignore_tests | print_in_columns
6943     echo
6944 fi
6945
6946 echo "License: $license"
6947
6948 fi # test "$quiet" != "yes"
6949
6950 if test -n "$WARNINGS"; then
6951     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
6952     enabled fatal_warnings && exit 1
6953 fi
6954
6955 test -e Makefile || echo "include $source_path/Makefile" > Makefile
6956
6957 esc(){
6958     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
6959 }
6960
6961 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" > ffbuild/config.fate
6962
6963 enabled stripping || strip="echo skipping strip"
6964 enabled stripping || striptype=""
6965
6966 config_files="$TMPH ffbuild/config.mak doc/config.texi"
6967
6968 cat > ffbuild/config.mak <<EOF
6969 # Automatically generated by configure - do not modify!
6970 ifndef FFMPEG_CONFIG_MAK
6971 FFMPEG_CONFIG_MAK=1
6972 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
6973 prefix=$prefix
6974 LIBDIR=\$(DESTDIR)$libdir
6975 SHLIBDIR=\$(DESTDIR)$shlibdir
6976 INCDIR=\$(DESTDIR)$incdir
6977 BINDIR=\$(DESTDIR)$bindir
6978 DATADIR=\$(DESTDIR)$datadir
6979 DOCDIR=\$(DESTDIR)$docdir
6980 MANDIR=\$(DESTDIR)$mandir
6981 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
6982 INSTALL_NAME_DIR=$install_name_dir
6983 SRC_PATH=$source_path
6984 SRC_LINK=$source_link
6985 ifndef MAIN_MAKEFILE
6986 SRC_PATH:=\$(SRC_PATH:.%=..%)
6987 endif
6988 CC_IDENT=$cc_ident
6989 ARCH=$arch
6990 INTRINSICS=$intrinsics
6991 EXTERN_PREFIX=$extern_prefix
6992 CC=$cc
6993 CXX=$cxx
6994 AS=$as
6995 OBJCC=$objcc
6996 LD=$ld
6997 DEPCC=$dep_cc
6998 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
6999 DEPAS=$as
7000 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
7001 X86ASM=$x86asmexe
7002 DEPX86ASM=$x86asmexe
7003 DEPX86ASMFLAGS=\$(X86ASMFLAGS)
7004 AR=$ar
7005 ARFLAGS=$arflags
7006 AR_O=$ar_o
7007 AR_CMD=$ar
7008 NM_CMD=$nm
7009 RANLIB=$ranlib
7010 STRIP=$strip
7011 STRIPTYPE=$striptype
7012 NVCC=$nvcc
7013 CP=cp -p
7014 LN_S=$ln_s
7015 CPPFLAGS=$CPPFLAGS
7016 CFLAGS=$CFLAGS
7017 CXXFLAGS=$CXXFLAGS
7018 OBJCFLAGS=$OBJCFLAGS
7019 ASFLAGS=$ASFLAGS
7020 NVCCFLAGS=$nvccflags
7021 AS_C=$AS_C
7022 AS_O=$AS_O
7023 OBJCC_C=$OBJCC_C
7024 OBJCC_E=$OBJCC_E
7025 OBJCC_O=$OBJCC_O
7026 CC_C=$CC_C
7027 CC_E=$CC_E
7028 CC_O=$CC_O
7029 CXX_C=$CXX_C
7030 CXX_O=$CXX_O
7031 NVCC_C=$NVCC_C
7032 NVCC_O=$NVCC_O
7033 LD_O=$LD_O
7034 X86ASM_O=$X86ASM_O
7035 LD_LIB=$LD_LIB
7036 LD_PATH=$LD_PATH
7037 DLLTOOL=$dlltool
7038 WINDRES=$windres
7039 DEPWINDRES=$dep_cc
7040 DOXYGEN=$doxygen
7041 LDFLAGS=$LDFLAGS
7042 LDEXEFLAGS=$LDEXEFLAGS
7043 LDSOFLAGS=$LDSOFLAGS
7044 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
7045 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
7046 X86ASMFLAGS=$X86ASMFLAGS
7047 BUILDSUF=$build_suffix
7048 PROGSSUF=$progs_suffix
7049 FULLNAME=$FULLNAME
7050 LIBPREF=$LIBPREF
7051 LIBSUF=$LIBSUF
7052 LIBNAME=$LIBNAME
7053 SLIBPREF=$SLIBPREF
7054 SLIBSUF=$SLIBSUF
7055 EXESUF=$EXESUF
7056 EXTRA_VERSION=$extra_version
7057 CCDEP=$CCDEP
7058 CXXDEP=$CXXDEP
7059 CCDEP_FLAGS=$CCDEP_FLAGS
7060 ASDEP=$ASDEP
7061 ASDEP_FLAGS=$ASDEP_FLAGS
7062 X86ASMDEP=$X86ASMDEP
7063 X86ASMDEP_FLAGS=$X86ASMDEP_FLAGS
7064 CC_DEPFLAGS=$CC_DEPFLAGS
7065 AS_DEPFLAGS=$AS_DEPFLAGS
7066 X86ASM_DEPFLAGS=$X86ASM_DEPFLAGS
7067 HOSTCC=$host_cc
7068 HOSTLD=$host_ld
7069 HOSTCFLAGS=$host_cflags
7070 HOSTCPPFLAGS=$host_cppflags
7071 HOSTEXESUF=$HOSTEXESUF
7072 HOSTLDFLAGS=$host_ldflags
7073 HOSTEXTRALIBS=$host_extralibs
7074 DEPHOSTCC=$host_cc
7075 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
7076 HOSTCCDEP=$HOSTCCDEP
7077 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
7078 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
7079 HOSTCC_C=$HOSTCC_C
7080 HOSTCC_O=$HOSTCC_O
7081 HOSTLD_O=$HOSTLD_O
7082 TARGET_EXEC=$target_exec $target_exec_args
7083 TARGET_PATH=$target_path
7084 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
7085 CFLAGS-ffplay=${sdl2_cflags}
7086 CFLAGS_HEADERS=$CFLAGS_HEADERS
7087 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
7088 EXTRALIBS=$extralibs
7089 COMPAT_OBJS=$compat_objs
7090 INSTALL=$install
7091 LIBTARGET=${LIBTARGET}
7092 SLIBNAME=${SLIBNAME}
7093 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
7094 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
7095 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
7096 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
7097 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
7098 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
7099 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
7100 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
7101 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
7102 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
7103 NOREDZONE_FLAGS=$noredzone_flags
7104 LIBFUZZER_PATH=$libfuzzer_path
7105 IGNORE_TESTS=$ignore_tests
7106 EOF
7107
7108 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> ffbuild/config.mak' $LIBRARY_LIST
7109
7110 for entry in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
7111     eval echo "EXTRALIBS-${entry}=\$${entry}_extralibs" >> ffbuild/config.mak
7112 done
7113
7114 cat > $TMPH <<EOF
7115 /* Automatically generated by configure - do not modify! */
7116 #ifndef FFMPEG_CONFIG_H
7117 #define FFMPEG_CONFIG_H
7118 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
7119 #define FFMPEG_LICENSE "$(c_escape $license)"
7120 #define CONFIG_THIS_YEAR 2018
7121 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
7122 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
7123 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
7124 #define av_restrict $restrict_keyword
7125 #define EXTERN_PREFIX "${extern_prefix}"
7126 #define EXTERN_ASM ${extern_prefix}
7127 #define BUILDSUF "$build_suffix"
7128 #define SLIBSUF "$SLIBSUF"
7129 #define HAVE_MMX2 HAVE_MMXEXT
7130 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
7131 EOF
7132
7133 test -n "$assert_level" &&
7134     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
7135
7136 test -n "$malloc_prefix" &&
7137     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
7138
7139 if enabled x86asm; then
7140     append config_files $TMPASM
7141     cat > $TMPASM <<EOF
7142 ; Automatically generated by configure - do not modify!
7143 EOF
7144 fi
7145
7146 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
7147
7148
7149 mkdir -p doc
7150 mkdir -p tests
7151 mkdir -p tests/api
7152 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
7153
7154 print_config ARCH_   "$config_files" $ARCH_LIST
7155 print_config HAVE_   "$config_files" $HAVE_LIST
7156 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
7157                                      $CONFIG_EXTRA      \
7158                                      $ALL_COMPONENTS    \
7159
7160 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
7161 echo "endif # FFMPEG_CONFIG_MAK" >> ffbuild/config.mak
7162
7163 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
7164 cp_if_changed $TMPH config.h
7165 touch ffbuild/.config
7166
7167 enabled x86asm && cp_if_changed $TMPASM config.asm
7168
7169 cat > $TMPH <<EOF
7170 /* Generated by ffmpeg configure */
7171 #ifndef AVUTIL_AVCONFIG_H
7172 #define AVUTIL_AVCONFIG_H
7173 EOF
7174
7175 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
7176
7177 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
7178
7179 cp_if_changed $TMPH libavutil/avconfig.h
7180
7181 full_filter_name(){
7182     sed -n "s/^extern AVFilter ff_\([avfsinkrc]\{2,5\}\)_$1;/\1_$1/p" $source_path/libavfilter/allfilters.c
7183 }
7184
7185 # generate the lists of enabled components
7186 print_enabled_components(){
7187     file=$1
7188     struct_name=$2
7189     name=$3
7190     shift 3
7191     echo "static const $struct_name * const $name[] = {" > $TMPH
7192     for c in $*; do
7193         if enabled $c; then
7194             case $name in
7195                 filter_list)
7196                     c=$(full_filter_name $(remove_suffix _filter $c))
7197                 ;;
7198                 indev_list)
7199                     c=$(add_suffix _demuxer $(remove_suffix _indev $c))
7200                 ;;
7201                 outdev_list)
7202                     c=$(add_suffix _muxer $(remove_suffix _outdev $c))
7203                 ;;
7204             esac
7205             printf "    &ff_%s,\n" $c >> $TMPH
7206         fi
7207     done
7208     if [ "$name" = "filter_list" ]; then
7209         for c in asrc_abuffer vsrc_buffer asink_abuffer vsink_buffer; do
7210             printf "    &ff_%s,\n" $c >> $TMPH
7211         done
7212     fi
7213     echo "    NULL };" >> $TMPH
7214     cp_if_changed $TMPH $file
7215 }
7216
7217 print_enabled_components libavfilter/filter_list.c AVFilter filter_list $FILTER_LIST
7218 print_enabled_components libavcodec/codec_list.c AVCodec codec_list $CODEC_LIST
7219 print_enabled_components libavcodec/parser_list.c AVCodecParser parser_list $PARSER_LIST
7220 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
7221 print_enabled_components libavformat/demuxer_list.c AVInputFormat demuxer_list $DEMUXER_LIST
7222 print_enabled_components libavformat/muxer_list.c AVOutputFormat muxer_list $MUXER_LIST
7223 print_enabled_components libavdevice/indev_list.c AVInputFormat indev_list $INDEV_LIST
7224 print_enabled_components libavdevice/outdev_list.c AVOutputFormat outdev_list $OUTDEV_LIST
7225 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
7226
7227 # Settings for pkg-config files
7228
7229 cat > $TMPH <<EOF
7230 # Automatically generated by configure - do not modify!
7231 shared=$shared
7232 build_suffix=$build_suffix
7233 prefix=$prefix
7234 libdir=$libdir
7235 incdir=$incdir
7236 rpath=$(enabled rpath && echo "-Wl,-rpath,\${libdir}")
7237 source_path=${source_path}
7238 LIBPREF=${LIBPREF}
7239 LIBSUF=${LIBSUF}
7240 extralibs_avutil="$avutil_extralibs"
7241 extralibs_avcodec="$avcodec_extralibs"
7242 extralibs_avformat="$avformat_extralibs"
7243 extralibs_avdevice="$avdevice_extralibs"
7244 extralibs_avfilter="$avfilter_extralibs"
7245 extralibs_avresample="$avresample_extralibs"
7246 extralibs_postproc="$postproc_extralibs"
7247 extralibs_swscale="$swscale_extralibs"
7248 extralibs_swresample="$swresample_extralibs"
7249 EOF
7250
7251 for lib in $LIBRARY_LIST; do
7252     lib_deps="$(eval echo \$${lib}_deps)"
7253     echo ${lib}_deps=\"$lib_deps\" >> $TMPH
7254 done
7255
7256 cp_if_changed $TMPH ffbuild/config.sh