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 [no]
 286   --enable-libzimg         enable z.lib, needed for zscale filter [no]
 287   --enable-libzmq          enable message passing via libzmq [no]
 288   --enable-libzvbi         enable teletext support via libzvbi [no]
 289   --enable-lv2             enable LV2 audio filtering [no]
 290   --disable-lzma           disable lzma [autodetect]
 291   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
 292   --enable-libndi_newtek   enable Newteck NDI I/O support [no]
 293   --enable-mediacodec      enable Android MediaCodec support [no]
 294   --enable-libmysofa       enable libmysofa, needed for sofalizer filter [no]
 295   --enable-openal          enable OpenAL 1.1 capture support [no]
 296   --enable-opencl          enable OpenCL processing [no]
 297   --enable-opengl          enable OpenGL rendering [no]
 298   --enable-openssl         enable openssl, needed for https support
 299                            if gnutls or libtls is not used [no]
 300   --disable-sndio          disable sndio support [autodetect]
 301   --disable-schannel       disable SChannel SSP, needed for TLS support on
 302                            Windows if openssl and gnutls are not used [autodetect]
 303   --disable-sdl2           disable sdl2 [autodetect]
 304   --disable-securetransport disable Secure Transport, needed for TLS support
 305                            on OSX if openssl and gnutls are not used [autodetect]
 306   --disable-xlib           disable xlib [autodetect]
 307   --disable-zlib           disable zlib [autodetect]
 308
 309   The following libraries provide various hardware acceleration features:
 310   --disable-amf            disable AMF video encoding code [autodetect]
 311   --disable-audiotoolbox   disable Apple AudioToolbox code [autodetect]
 312   --enable-cuda-sdk        enable CUDA features that require the CUDA SDK [no]
 313   --disable-cuvid          disable Nvidia CUVID support [autodetect]
 314   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
 315   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
 316   --disable-ffnvcodec      disable dynamically linked Nvidia code [autodetect]
 317   --enable-libdrm          enable DRM code (Linux) [no]
 318   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
 319   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
 320   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
 321   --disable-nvdec          disable Nvidia video decoding acceleration (via hwaccel) [autodetect]
 322   --disable-nvenc          disable Nvidia video encoding code [autodetect]
 323   --enable-omx             enable OpenMAX IL code [no]
 324   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
 325   --enable-rkmpp           enable Rockchip Media Process Platform code [no]
 326   --disable-v4l2-m2m       disable V4L2 mem2mem code [autodetect]
 327   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
 328   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
 329   --disable-videotoolbox   disable VideoToolbox code [autodetect]
 330
 331 Toolchain options:
 332   --arch=ARCH              select architecture [$arch]
 333   --cpu=CPU                select the minimum required CPU (affects
 334                            instruction selection, may crash on older CPUs)
 335   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 336   --progs-suffix=SUFFIX    program name suffix []
 337   --enable-cross-compile   assume a cross-compiler is used
 338   --sysroot=PATH           root of cross-build tree
 339   --sysinclude=PATH        location of cross-build system headers
 340   --target-os=OS           compiler targets OS [$target_os]
 341   --target-exec=CMD        command to run executables on target
 342   --target-path=DIR        path to view of build directory on target
 343   --target-samples=DIR     path to samples directory on target
 344   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 345   --toolchain=NAME         set tool defaults according to NAME
 346                            (gcc-asan, clang-asan, gcc-msan, clang-msan,
 347                            gcc-tsan, clang-tsan, gcc-usan, clang-usan,
 348                            valgrind-massif, valgrind-memcheck,
 349                            msvc, icl, gcov, llvm-cov, hardened)
 350   --nm=NM                  use nm tool NM [$nm_default]
 351   --ar=AR                  use archive tool AR [$ar_default]
 352   --as=AS                  use assembler AS [$as_default]
 353   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
 354   --strip=STRIP            use strip tool STRIP [$strip_default]
 355   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 356   --x86asmexe=EXE          use nasm-compatible assembler EXE [$x86asmexe_default]
 357   --cc=CC                  use C compiler CC [$cc_default]
 358   --cxx=CXX                use C compiler CXX [$cxx_default]
 359   --objcc=OCC              use ObjC compiler OCC [$cc_default]
 360   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 361   --nvcc=NVCC              use Nvidia CUDA compiler NVCC [$nvcc_default]
 362   --ld=LD                  use linker LD [$ld_default]
 363   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 364   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 365   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 366   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
 367   --host-cc=HOSTCC         use host C compiler HOSTCC
 368   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 369   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 370   --host-ld=HOSTLD         use host linker HOSTLD
 371   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 372   --host-libs=HLIBS        use libs HLIBS when linking for host
 373   --host-os=OS             compiler host OS [$target_os]
 374   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 375   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 376   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
 377   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 378   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 379   --extra-ldsoflags=ELDFLAGS add ELDFLAGS to LDSOFLAGS [$LDSOFLAGS]
 380   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 381   --extra-version=STRING   version string suffix []
 382   --optflags=OPTFLAGS      override optimization-related compiler flags
 383   --nvccflags=NVCCFLAGS    override nvcc flags [$nvccflags_default]
 384   --build-suffix=SUFFIX    library name suffix []
 385   --enable-pic             build position-independent code
 386   --enable-thumb           compile for Thumb instruction set
 387   --enable-lto             use link-time optimization
 388   --env="ENV=override"     override the environment variables
 389
 390 Advanced options (experts only):
 391   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 392   --custom-allocator=NAME  use a supported custom allocator
 393   --disable-symver         disable symbol versioning
 394   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 395   --disable-safe-bitstream-reader
 396                            disable buffer boundary checking in bitreaders
 397                            (faster, but may crash)
 398   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
 399
 400 Optimization options (experts only):
 401   --disable-asm            disable all assembly optimizations
 402   --disable-altivec        disable AltiVec optimizations
 403   --disable-vsx            disable VSX optimizations
 404   --disable-power8         disable POWER8 optimizations
 405   --disable-amd3dnow       disable 3DNow! optimizations
 406   --disable-amd3dnowext    disable 3DNow! extended optimizations
 407   --disable-mmx            disable MMX optimizations
 408   --disable-mmxext         disable MMXEXT optimizations
 409   --disable-sse            disable SSE optimizations
 410   --disable-sse2           disable SSE2 optimizations
 411   --disable-sse3           disable SSE3 optimizations
 412   --disable-ssse3          disable SSSE3 optimizations
 413   --disable-sse4           disable SSE4 optimizations
 414   --disable-sse42          disable SSE4.2 optimizations
 415   --disable-avx            disable AVX optimizations
 416   --disable-xop            disable XOP optimizations
 417   --disable-fma3           disable FMA3 optimizations
 418   --disable-fma4           disable FMA4 optimizations
 419   --disable-avx2           disable AVX2 optimizations
 420   --disable-avx512         disable AVX-512 optimizations
 421   --disable-aesni          disable AESNI optimizations
 422   --disable-armv5te        disable armv5te optimizations
 423   --disable-armv6          disable armv6 optimizations
 424   --disable-armv6t2        disable armv6t2 optimizations
 425   --disable-vfp            disable VFP optimizations
 426   --disable-neon           disable NEON optimizations
 427   --disable-inline-asm     disable use of inline assembly
 428   --disable-x86asm         disable use of standalone x86 assembly
 429   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
 430   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 431   --disable-msa            disable MSA optimizations
 432   --disable-mipsfpu        disable floating point MIPS optimizations
 433   --disable-mmi            disable Loongson SIMD optimizations
 434   --disable-fast-unaligned consider unaligned accesses slow
 435
 436 Developer options (useful when working on FFmpeg itself):
 437   --disable-debug          disable debugging symbols
 438   --enable-debug=LEVEL     set the debug level [$debuglevel]
 439   --disable-optimizations  disable compiler optimizations
 440   --enable-extra-warnings  enable more compiler warnings
 441   --disable-stripping      disable stripping of executables and shared libraries
 442   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 443                            2 causes a slowdown at runtime.
 444   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 445   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 446                            leaks and errors, using the specified valgrind binary.
 447                            Cannot be combined with --target-exec
 448   --enable-ftrapv          Trap arithmetic overflows
 449   --samples=PATH           location of test samples for FATE, if not set use
 450                            \$FATE_SAMPLES at make invocation time.
 451   --enable-neon-clobber-test check NEON registers for clobbering (should be
 452                            used only for debugging purposes)
 453   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 454                            should be used only for debugging purposes)
 455   --enable-random          randomly enable/disable components
 456   --disable-random
 457   --enable-random=LIST     randomly enable/disable specific components or
 458   --disable-random=LIST    component groups. LIST is a comma-separated list
 459                            of NAME[:PROB] entries where NAME is a component
 460                            (group) and PROB the probability associated with
 461                            NAME (default 0.5).
 462   --random-seed=VALUE      seed value for --enable/disable-random
 463   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 464                            (only applies to --disable-optimizations builds)
 465   --enable-osfuzz          Enable building fuzzer tool
 466   --libfuzzer=PATH         path to libfuzzer
 467   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
 468                            in the name) of tests whose result is ignored
 469   --enable-linux-perf      enable Linux Performance Monitor API
 470
 471 NOTE: Object files are built at the place where configure is launched.
 472 EOF
 473   exit 0
 474 }
 475
 476 if test -t 1 && which tput >/dev/null 2>&1; then
 477     ncolors=$(tput colors)
 478     if test -n "$ncolors" && test $ncolors -ge 8; then
 479         bold_color=$(tput bold)
 480         warn_color=$(tput setaf 3)
 481         error_color=$(tput setaf 1)
 482         reset_color=$(tput sgr0)
 483     fi
 484     # 72 used instead of 80 since that's the default of pr
 485     ncols=$(tput cols)
 486 fi
 487 : ${ncols:=72}
 488
 489 log(){
 490     echo "$@" >> $logfile
 491 }
 492
 493 log_file(){
 494     log BEGIN $1
 495     pr -n -t $1 >> $logfile
 496     log END $1
 497 }
 498
 499 warn(){
 500     log "WARNING: $*"
 501     WARNINGS="${WARNINGS}WARNING: $*\n"
 502 }
 503
 504 die(){
 505     log "$@"
 506     echo "$error_color$bold_color$@$reset_color"
 507     cat <<EOF
 508
 509 If you think configure made a mistake, make sure you are using the latest
 510 version from Git.  If the latest version fails, report the problem to the
 511 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 512 EOF
 513     if disabled logging; then
 514         cat <<EOF
 515 Rerun configure with logging enabled (do not use --disable-logging), and
 516 include the log this produces with your report.
 517 EOF
 518     else
 519         cat <<EOF
 520 Include the log file "$logfile" produced by configure as this will help
 521 solve the problem.
 522 EOF
 523     fi
 524     exit 1
 525 }
 526
 527 # Avoid locale weirdness, besides we really just want to translate ASCII.
 528 toupper(){
 529     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 530 }
 531
 532 tolower(){
 533     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 534 }
 535
 536 c_escape(){
 537     echo "$*" | sed 's/["\\]/\\\0/g'
 538 }
 539
 540 sh_quote(){
 541     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 542     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 543     echo "$v"
 544 }
 545
 546 cleanws(){
 547     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
 548 }
 549
 550 filter(){
 551     pat=$1
 552     shift
 553     for v; do
 554         eval "case '$v' in $pat) printf '%s ' '$v' ;; esac"
 555     done
 556 }
 557
 558 filter_out(){
 559     pat=$1
 560     shift
 561     for v; do
 562         eval "case '$v' in $pat) ;; *) printf '%s ' '$v' ;; esac"
 563     done
 564 }
 565
 566 map(){
 567     m=$1
 568     shift
 569     for v; do eval $m; done
 570 }
 571
 572 add_suffix(){
 573     suffix=$1
 574     shift
 575     for v; do echo ${v}${suffix}; done
 576 }
 577
 578 remove_suffix(){
 579     suffix=$1
 580     shift
 581     for v; do echo ${v%$suffix}; done
 582 }
 583
 584 set_all(){
 585     value=$1
 586     shift
 587     for var in $*; do
 588         eval $var=$value
 589     done
 590 }
 591
 592 set_weak(){
 593     value=$1
 594     shift
 595     for var; do
 596         eval : \${$var:=$value}
 597     done
 598 }
 599
 600 sanitize_var_name(){
 601     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 602 }
 603
 604 set_sanitized(){
 605     var=$1
 606     shift
 607     eval $(sanitize_var_name "$var")='$*'
 608 }
 609
 610 get_sanitized(){
 611     eval echo \$$(sanitize_var_name "$1")
 612 }
 613
 614 pushvar(){
 615     for pvar in $*; do
 616         eval level=\${${pvar}_level:=0}
 617         eval ${pvar}_${level}="\$$pvar"
 618         eval ${pvar}_level=$(($level+1))
 619     done
 620 }
 621
 622 popvar(){
 623     for pvar in $*; do
 624         eval level=\${${pvar}_level:-0}
 625         test $level = 0 && continue
 626         eval level=$(($level-1))
 627         eval $pvar="\${${pvar}_${level}}"
 628         eval ${pvar}_level=$level
 629         eval unset ${pvar}_${level}
 630     done
 631 }
 632
 633 request(){
 634     for var in $*; do
 635         eval ${var}_requested=yes
 636         eval $var=
 637     done
 638 }
 639
 640 enable(){
 641     set_all yes $*
 642 }
 643
 644 disable(){
 645     set_all no $*
 646 }
 647
 648 enable_weak(){
 649     set_weak yes $*
 650 }
 651
 652 disable_weak(){
 653     set_weak no $*
 654 }
 655
 656 enable_sanitized(){
 657     for var; do
 658         enable $(sanitize_var_name $var)
 659     done
 660 }
 661
 662 disable_sanitized(){
 663     for var; do
 664         disable $(sanitize_var_name $var)
 665     done
 666 }
 667
 668 do_enable_deep(){
 669     for var; do
 670         enabled $var && continue
 671         eval sel="\$${var}_select"
 672         eval sgs="\$${var}_suggest"
 673         pushvar var sgs
 674         enable_deep $sel
 675         popvar sgs
 676         enable_deep_weak $sgs
 677         popvar var
 678     done
 679 }
 680
 681 enable_deep(){
 682     do_enable_deep $*
 683     enable $*
 684 }
 685
 686 enable_deep_weak(){
 687     for var; do
 688         disabled $var && continue
 689         pushvar var
 690         do_enable_deep $var
 691         popvar var
 692         enable_weak $var
 693     done
 694 }
 695
 696 requested(){
 697     test "${1#!}" = "$1" && op="=" || op="!="
 698     eval test "x\$${1#!}_requested" $op "xyes"
 699 }
 700
 701 enabled(){
 702     test "${1#!}" = "$1" && op="=" || op="!="
 703     eval test "x\$${1#!}" $op "xyes"
 704 }
 705
 706 disabled(){
 707     test "${1#!}" = "$1" && op="=" || op="!="
 708     eval test "x\$${1#!}" $op "xno"
 709 }
 710
 711 enabled_all(){
 712     for opt; do
 713         enabled $opt || return 1
 714     done
 715 }
 716
 717 disabled_all(){
 718     for opt; do
 719         disabled $opt || return 1
 720     done
 721 }
 722
 723 enabled_any(){
 724     for opt; do
 725         enabled $opt && return 0
 726     done
 727 }
 728
 729 disabled_any(){
 730     for opt; do
 731         disabled $opt && return 0
 732     done
 733     return 1
 734 }
 735
 736 set_default(){
 737     for opt; do
 738         eval : \${$opt:=\$${opt}_default}
 739     done
 740 }
 741
 742 is_in(){
 743     value=$1
 744     shift
 745     for var in $*; do
 746         [ $var = $value ] && return 0
 747     done
 748     return 1
 749 }
 750
 751 check_deps(){
 752     for cfg; do
 753         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 754         disabled ${cfg}_checking && continue
 755         enable ${cfg}_checking
 756
 757         eval dep_all="\$${cfg}_deps"
 758         eval dep_any="\$${cfg}_deps_any"
 759         eval dep_con="\$${cfg}_conflict"
 760         eval dep_sel="\$${cfg}_select"
 761         eval dep_sgs="\$${cfg}_suggest"
 762         eval dep_ifa="\$${cfg}_if"
 763         eval dep_ifn="\$${cfg}_if_any"
 764
 765         pushvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
 766         check_deps $dep_all $dep_any $dep_con $dep_sel $dep_sgs $dep_ifa $dep_ifn
 767         popvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
 768
 769         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 770         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 771         enabled_all  $dep_all || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not all dependencies are satisfied: $dep_all"; }
 772         enabled_any  $dep_any || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not any dependency is satisfied: $dep_any"; }
 773         disabled_all $dep_con || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some conflicting dependencies are unsatisfied: $dep_con"; }
 774         disabled_any $dep_sel && { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some selected dependency is unsatisfied: $dep_sel"; }
 775
 776         enabled $cfg && enable_deep_weak $dep_sel $dep_sgs
 777
 778         for dep in $dep_all $dep_any $dep_sel $dep_sgs; do
 779             # filter out library deps, these do not belong in extralibs
 780             is_in $dep $LIBRARY_LIST && continue
 781             enabled $dep && eval append ${cfg}_extralibs ${dep}_extralibs
 782         done
 783
 784         disable ${cfg}_checking
 785     done
 786 }
 787
 788 print_config(){
 789     pfx=$1
 790     files=$2
 791     shift 2
 792     map 'eval echo "$v \${$v:-no}"' "$@" |
 793     awk "BEGIN { split(\"$files\", files) }
 794         {
 795             c = \"$pfx\" toupper(\$1);
 796             v = \$2;
 797             sub(/yes/, 1, v);
 798             sub(/no/,  0, v);
 799             for (f in files) {
 800                 file = files[f];
 801                 if (file ~ /\\.h\$/) {
 802                     printf(\"#define %s %d\\n\", c, v) >>file;
 803                 } else if (file ~ /\\.asm\$/) {
 804                     printf(\"%%define %s %d\\n\", c, v) >>file;
 805                 } else if (file ~ /\\.mak\$/) {
 806                     n = -v ? \"\" : \"!\";
 807                     printf(\"%s%s=yes\\n\", n, c) >>file;
 808                 } else if (file ~ /\\.texi\$/) {
 809                     pre = -v ? \"\" : \"@c \";
 810                     yesno = \$2;
 811                     c2 = tolower(c);
 812                     gsub(/_/, \"-\", c2);
 813                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 814                 }
 815             }
 816         }"
 817 }
 818
 819 print_enabled(){
 820     suf=$1
 821     shift
 822     for v; do
 823         enabled $v && printf "%s\n" ${v%$suf}
 824     done
 825 }
 826
 827 append(){
 828     var=$1
 829     shift
 830     eval "$var=\"\$$var $*\""
 831 }
 832
 833 prepend(){
 834     var=$1
 835     shift
 836     eval "$var=\"$* \$$var\""
 837 }
 838
 839 unique(){
 840     var=$1
 841     uniq_list=""
 842     for tok in $(eval echo \$$var); do
 843         uniq_list="$(filter_out $tok $uniq_list) $tok"
 844     done
 845     eval "$var=\"${uniq_list}\""
 846 }
 847
 848 resolve(){
 849     var=$1
 850     tmpvar=
 851     for entry in $(eval echo \$$var); do
 852         tmpvar="$tmpvar $(eval echo \$${entry})"
 853     done
 854     eval "$var=\"${tmpvar}\""
 855 }
 856
 857 add_cppflags(){
 858     append CPPFLAGS "$@"
 859 }
 860
 861 add_cflags(){
 862     append CFLAGS $($cflags_filter "$@")
 863 }
 864
 865 add_cflags_headers(){
 866     append CFLAGS_HEADERS $($cflags_filter "$@")
 867 }
 868
 869 add_cxxflags(){
 870     append CXXFLAGS $($cflags_filter "$@")
 871 }
 872
 873 add_asflags(){
 874     append ASFLAGS $($asflags_filter "$@")
 875 }
 876
 877 add_objcflags(){
 878     append OBJCFLAGS $($objcflags_filter "$@")
 879 }
 880
 881 add_ldflags(){
 882     append LDFLAGS $($ldflags_filter "$@")
 883 }
 884
 885 add_ldexeflags(){
 886     append LDEXEFLAGS $($ldflags_filter "$@")
 887 }
 888
 889 add_ldsoflags(){
 890     append LDSOFLAGS $($ldflags_filter "$@")
 891 }
 892
 893 add_stripflags(){
 894     append ASMSTRIPFLAGS "$@"
 895 }
 896
 897 add_extralibs(){
 898     prepend extralibs $($ldflags_filter "$@")
 899 }
 900
 901 add_host_cppflags(){
 902     append host_cppflags "$@"
 903 }
 904
 905 add_host_cflags(){
 906     append host_cflags $($host_cflags_filter "$@")
 907 }
 908
 909 add_host_ldflags(){
 910     append host_ldflags $($host_ldflags_filter "$@")
 911 }
 912
 913 add_compat(){
 914     append compat_objs $1
 915     shift
 916     map 'add_cppflags -D$v' "$@"
 917 }
 918
 919 test_cmd(){
 920     log "$@"
 921     "$@" >> $logfile 2>&1
 922 }
 923
 924 test_stat(){
 925     log test_stat "$@"
 926     stat "$1" >> $logfile 2>&1
 927 }
 928
 929 cc_o(){
 930     eval printf '%s\\n' $CC_O
 931 }
 932
 933 cc_e(){
 934     eval printf '%s\\n' $CC_E
 935 }
 936
 937 test_cc(){
 938     log test_cc "$@"
 939     cat > $TMPC
 940     log_file $TMPC
 941     test_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 942 }
 943
 944 test_cxx(){
 945     log test_cxx "$@"
 946     cat > $TMPCPP
 947     log_file $TMPCPP
 948     test_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
 949 }
 950
 951 test_objcc(){
 952     log test_objcc "$@"
 953     cat > $TMPM
 954     log_file $TMPM
 955     test_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
 956 }
 957
 958 test_cpp(){
 959     log test_cpp "$@"
 960     cat > $TMPC
 961     log_file $TMPC
 962     test_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 963 }
 964
 965 as_o(){
 966     eval printf '%s\\n' $AS_O
 967 }
 968
 969 test_as(){
 970     log test_as "$@"
 971     cat > $TMPS
 972     log_file $TMPS
 973     test_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 974 }
 975
 976 x86asm_o(){
 977     eval printf '%s\\n' $X86ASM_O
 978 }
 979
 980 test_x86asm(){
 981     log test_x86asm "$@"
 982     echo "$1" > $TMPASM
 983     log_file $TMPASM
 984     shift
 985     test_cmd $x86asmexe $X86ASMFLAGS -Werror "$@" $(x86asm_o $TMPO) $TMPASM
 986 }
 987
 988 check_cmd(){
 989     log check_cmd "$@"
 990     cmd=$1
 991     disabled $cmd && return
 992     disable $cmd
 993     test_cmd $@ && enable $cmd
 994 }
 995
 996 check_as(){
 997     log check_as "$@"
 998     name=$1
 999     code=$2
1000     shift 2
1001     disable $name
1002     test_as $@ <<EOF && enable $name
1003 $code
1004 EOF
1005 }
1006
1007 check_inline_asm(){
1008     log check_inline_asm "$@"
1009     name="$1"
1010     code="$2"
1011     shift 2
1012     disable $name
1013     test_cc "$@" <<EOF && enable $name
1014 void foo(void){ __asm__ volatile($code); }
1015 EOF
1016 }
1017
1018 check_inline_asm_flags(){
1019     log check_inline_asm_flags "$@"
1020     name="$1"
1021     code="$2"
1022     flags=''
1023     shift 2
1024     while [ "$1" != "" ]; do
1025       append flags $1
1026       shift
1027     done;
1028     disable $name
1029     cat > $TMPC <<EOF
1030 void foo(void){ __asm__ volatile($code); }
1031 EOF
1032     log_file $TMPC
1033     test_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
1034     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
1035 }
1036
1037 check_insn(){
1038     log check_insn "$@"
1039     check_inline_asm ${1}_inline "$2"
1040     check_as ${1}_external "$2"
1041 }
1042
1043 check_x86asm(){
1044     log check_x86asm "$@"
1045     name=$1
1046     shift
1047     disable $name
1048     test_x86asm "$@" && enable $name
1049 }
1050
1051 ld_o(){
1052     eval printf '%s\\n' $LD_O
1053 }
1054
1055 test_ld(){
1056     log test_ld "$@"
1057     type=$1
1058     shift 1
1059     flags=$(filter_out '-l*|*.so' $@)
1060     libs=$(filter '-l*|*.so' $@)
1061     test_$type $($cflags_filter $flags) || return
1062     flags=$($ldflags_filter $flags)
1063     libs=$($ldflags_filter $libs)
1064     test_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
1065 }
1066
1067 check_ld(){
1068     log check_ld "$@"
1069     type=$1
1070     name=$2
1071     shift 2
1072     disable $name
1073     test_ld $type $@ && enable $name
1074 }
1075
1076 print_include(){
1077     hdr=$1
1078     test "${hdr%.h}" = "${hdr}" &&
1079         echo "#include $hdr"    ||
1080         echo "#include <$hdr>"
1081 }
1082
1083 test_code(){
1084     log test_code "$@"
1085     check=$1
1086     headers=$2
1087     code=$3
1088     shift 3
1089     {
1090         for hdr in $headers; do
1091             print_include $hdr
1092         done
1093         echo "int main(void) { $code; return 0; }"
1094     } | test_$check "$@"
1095 }
1096
1097 check_cppflags(){
1098     log check_cppflags "$@"
1099     test_cpp "$@" <<EOF && append CPPFLAGS "$@"
1100 #include <stdlib.h>
1101 EOF
1102 }
1103
1104 test_cflags(){
1105     log test_cflags "$@"
1106     set -- $($cflags_filter "$@")
1107     test_cc "$@" <<EOF
1108 int x;
1109 EOF
1110 }
1111
1112 check_cflags(){
1113     log check_cflags "$@"
1114     test_cflags "$@" && add_cflags "$@"
1115 }
1116
1117 check_cxxflags(){
1118     log check_cxxflags "$@"
1119     set -- $($cflags_filter "$@")
1120     test_cxx "$@" <<EOF && append CXXFLAGS "$@"
1121 int x;
1122 EOF
1123 }
1124
1125 test_objcflags(){
1126     log test_objcflags "$@"
1127     set -- $($objcflags_filter "$@")
1128     test_objcc "$@" <<EOF
1129 int x;
1130 EOF
1131 }
1132
1133 check_objcflags(){
1134     log check_objcflags "$@"
1135     test_objcflags "$@" && add_objcflags "$@"
1136 }
1137
1138 test_ldflags(){
1139     log test_ldflags "$@"
1140     set -- $($ldflags_filter "$@")
1141     test_ld "cc" "$@" <<EOF
1142 int main(void){ return 0; }
1143 EOF
1144 }
1145
1146 check_ldflags(){
1147     log check_ldflags "$@"
1148     test_ldflags "$@" && add_ldflags "$@"
1149 }
1150
1151 test_stripflags(){
1152     log test_stripflags "$@"
1153     # call test_cc to get a fresh TMPO
1154     test_cc <<EOF
1155 int main(void) { return 0; }
1156 EOF
1157     test_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1158 }
1159
1160 check_stripflags(){
1161     log check_stripflags "$@"
1162     test_stripflags "$@" && add_stripflags "$@"
1163 }
1164
1165 check_header(){
1166     log check_header "$@"
1167     headers=$1
1168     shift
1169     disable_sanitized $headers
1170     {
1171         for hdr in $headers; do
1172             print_include $hdr
1173         done
1174         echo "int x;"
1175     } | test_cpp "$@" && enable_sanitized $headers
1176 }
1177
1178 check_header_objcc(){
1179     log check_header_objcc "$@"
1180     rm -f -- "$TMPO"
1181     header=$1
1182     shift
1183     disable_sanitized $header
1184     {
1185        echo "#include <$header>"
1186        echo "int main(void) { return 0; }"
1187     } | test_objcc && test_stat "$TMPO" && enable_sanitized $header
1188 }
1189
1190 check_apple_framework(){
1191     log check_apple_framework "$@"
1192     framework="$1"
1193     name="$(tolower $framework)"
1194     header="${framework}/${framework}.h"
1195     disable $name
1196     check_header_objcc $header &&
1197         enable $name && eval ${name}_extralibs='"-framework $framework"'
1198 }
1199
1200 check_func(){
1201     log check_func "$@"
1202     func=$1
1203     shift
1204     disable $func
1205     test_ld "cc" "$@" <<EOF && enable $func
1206 extern int $func();
1207 int main(void){ $func(); }
1208 EOF
1209 }
1210
1211 check_complexfunc(){
1212     log check_complexfunc "$@"
1213     func=$1
1214     narg=$2
1215     shift 2
1216     test $narg = 2 && args="f, g" || args="f * I"
1217     disable $func
1218     test_ld "cc" "$@" <<EOF && enable $func
1219 #include <complex.h>
1220 #include <math.h>
1221 float foo(complex float f, complex float g) { return $func($args); }
1222 int main(void){ return (int) foo; }
1223 EOF
1224 }
1225
1226 check_mathfunc(){
1227     log check_mathfunc "$@"
1228     func=$1
1229     narg=$2
1230     shift 2
1231     test $narg = 2 && args="f, g" || args="f"
1232     disable $func
1233     test_ld "cc" "$@" <<EOF && enable $func
1234 #include <math.h>
1235 float foo(float f, float g) { return $func($args); }
1236 int main(void){ return (int) foo; }
1237 EOF
1238 }
1239
1240 check_func_headers(){
1241     log check_func_headers "$@"
1242     headers=$1
1243     funcs=$2
1244     shift 2
1245     {
1246         for hdr in $headers; do
1247             print_include $hdr
1248         done
1249         echo "#include <stdint.h>"
1250         for func in $funcs; do
1251             echo "long check_$func(void) { return (long) $func; }"
1252         done
1253         echo "int main(void) { int ret = 0;"
1254         # LTO could optimize out the test functions without this
1255         for func in $funcs; do
1256             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1257         done
1258         echo "return ret; }"
1259     } | test_ld "cc" "$@" && enable $funcs && enable_sanitized $headers
1260 }
1261
1262 check_class_headers_cpp(){
1263     log check_class_headers_cpp "$@"
1264     headers=$1
1265     classes=$2
1266     shift 2
1267     {
1268         for hdr in $headers; do
1269             echo "#include <$hdr>"
1270         done
1271         echo "int main(void) { "
1272         i=1
1273         for class in $classes; do
1274             echo "$class obj$i;"
1275             i=$(expr $i + 1)
1276         done
1277         echo "return 0; }"
1278     } | test_ld "cxx" "$@" && enable $funcs && enable_sanitized $headers
1279 }
1280
1281 test_cpp_condition(){
1282     log test_cpp_condition "$@"
1283     header=$1
1284     condition=$2
1285     shift 2
1286     test_cpp "$@" <<EOF
1287 #include <$header>
1288 #if !($condition)
1289 #error "unsatisfied condition: $condition"
1290 #endif
1291 EOF
1292 }
1293
1294 check_cpp_condition(){
1295     log check_cpp_condition "$@"
1296     name=$1
1297     shift 1
1298     disable $name
1299     test_cpp_condition "$@" && enable $name
1300 }
1301
1302 test_cflags_cc(){
1303     log test_cflags_cc "$@"
1304     flags=$1
1305     header=$2
1306     condition=$3
1307     shift 3
1308     set -- $($cflags_filter "$flags")
1309     test_cc "$@" <<EOF
1310 #include <$header>
1311 #if !($condition)
1312 #error "unsatisfied condition: $condition"
1313 #endif
1314 EOF
1315 }
1316
1317 check_lib(){
1318     log check_lib "$@"
1319     name="$1"
1320     headers="$2"
1321     funcs="$3"
1322     shift 3
1323     disable $name
1324     check_func_headers "$headers" "$funcs" "$@" &&
1325         enable $name && eval ${name}_extralibs="\$@"
1326 }
1327
1328 check_lib_cpp(){
1329     log check_lib_cpp "$@"
1330     name="$1"
1331     headers="$2"
1332     classes="$3"
1333     shift 3
1334     disable $name
1335     check_class_headers_cpp "$headers" "$classes" "$@" &&
1336         enable $name && eval ${name}_extralibs="\$@"
1337 }
1338
1339 test_pkg_config(){
1340     log test_pkg_config "$@"
1341     name="$1"
1342     pkg_version="$2"
1343     pkg="${2%% *}"
1344     headers="$3"
1345     funcs="$4"
1346     shift 4
1347     disable $name
1348     test_cmd $pkg_config --exists --print-errors $pkg_version || return
1349     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1350     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1351     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1352         enable $name &&
1353         set_sanitized "${name}_cflags"    $pkg_cflags &&
1354         set_sanitized "${name}_extralibs" $pkg_libs
1355 }
1356
1357 check_pkg_config(){
1358     log check_pkg_config "$@"
1359     name="$1"
1360     test_pkg_config "$@" &&
1361         eval add_cflags \$${name}_cflags
1362 }
1363
1364 test_exec(){
1365     test_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1366 }
1367
1368 check_exec_crash(){
1369     log check_exec_crash "$@"
1370     code=$(cat)
1371
1372     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1373     # are safe but may not be available everywhere.  Thus we use
1374     # raise(SIGTERM) instead.  The check is run in a subshell so we
1375     # can redirect the "Terminated" message from the shell.  SIGBUS
1376     # is not defined by standard C so it is used conditionally.
1377
1378     (test_exec "$@") >> $logfile 2>&1 <<EOF
1379 #include <signal.h>
1380 static void sighandler(int sig){
1381     raise(SIGTERM);
1382 }
1383 int foo(void){
1384     $code
1385 }
1386 int (*func_ptr)(void) = foo;
1387 int main(void){
1388     signal(SIGILL, sighandler);
1389     signal(SIGFPE, sighandler);
1390     signal(SIGSEGV, sighandler);
1391 #ifdef SIGBUS
1392     signal(SIGBUS, sighandler);
1393 #endif
1394     return func_ptr();
1395 }
1396 EOF
1397 }
1398
1399 check_type(){
1400     log check_type "$@"
1401     headers=$1
1402     type=$2
1403     shift 2
1404     disable_sanitized "$type"
1405     test_code cc "$headers" "$type v" "$@" && enable_sanitized "$type"
1406 }
1407
1408 check_struct(){
1409     log check_struct "$@"
1410     headers=$1
1411     struct=$2
1412     member=$3
1413     shift 3
1414     disable_sanitized "${struct}_${member}"
1415     test_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1416         enable_sanitized "${struct}_${member}"
1417 }
1418
1419 check_builtin(){
1420     log check_builtin "$@"
1421     name=$1
1422     headers=$2
1423     builtin=$3
1424     shift 3
1425     disable "$name"
1426     test_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1427 }
1428
1429 check_compile_assert(){
1430     log check_compile_assert "$@"
1431     name=$1
1432     headers=$2
1433     condition=$3
1434     shift 3
1435     disable "$name"
1436     test_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1437 }
1438
1439 check_cc(){
1440     log check_cc "$@"
1441     name=$1
1442     shift
1443     disable "$name"
1444     test_code cc "$@" && enable "$name"
1445 }
1446
1447 require(){
1448     log require "$@"
1449     name_version="$1"
1450     name="${1%% *}"
1451     shift
1452     check_lib $name "$@" || die "ERROR: $name_version not found"
1453 }
1454
1455 require_cc(){
1456     log require_cc "$@"
1457     name="$1"
1458     shift
1459     test_code cc "$@" || die "ERROR: $name failed"
1460 }
1461
1462 require_cpp(){
1463     name="$1"
1464     headers="$2"
1465     classes="$3"
1466     shift 3
1467     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1468 }
1469
1470 require_header(){
1471     log require_header "$@"
1472     headers="$1"
1473     check_header "$@" || die "ERROR: $headers not found"
1474 }
1475
1476 require_cpp_condition(){
1477     log require_cpp_condition "$@"
1478     condition="$2"
1479     test_cpp_condition "$@" || die "ERROR: $condition not satisfied"
1480 }
1481
1482 require_pkg_config(){
1483     log require_pkg_config "$@"
1484     pkg_version="$2"
1485     check_pkg_config "$@" || die "ERROR: $pkg_version not found using pkg-config$pkg_config_fail_message"
1486 }
1487
1488 hostcc_e(){
1489     eval printf '%s\\n' $HOSTCC_E
1490 }
1491
1492 hostcc_o(){
1493     eval printf '%s\\n' $HOSTCC_O
1494 }
1495
1496 test_host_cc(){
1497     log test_host_cc "$@"
1498     cat > $TMPC
1499     log_file $TMPC
1500     test_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1501 }
1502
1503 test_host_cpp(){
1504     log test_host_cpp "$@"
1505     cat > $TMPC
1506     log_file $TMPC
1507     test_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1508 }
1509
1510 check_host_cppflags(){
1511     log check_host_cppflags "$@"
1512     test_host_cpp "$@" <<EOF && append host_cppflags "$@"
1513 #include <stdlib.h>
1514 EOF
1515 }
1516
1517 check_host_cflags(){
1518     log check_host_cflags "$@"
1519     set -- $($host_cflags_filter "$@")
1520     test_host_cc "$@" <<EOF && append host_cflags "$@"
1521 int x;
1522 EOF
1523 }
1524
1525 test_host_cpp_condition(){
1526     log test_host_cpp_condition "$@"
1527     header=$1
1528     condition=$2
1529     shift 2
1530     test_host_cpp "$@" <<EOF
1531 #include <$header>
1532 #if !($condition)
1533 #error "unsatisfied condition: $condition"
1534 #endif
1535 EOF
1536 }
1537
1538 check_host_cpp_condition(){
1539     log check_host_cpp_condition "$@"
1540     name=$1
1541     shift 1
1542     disable $name
1543     test_host_cpp_condition "$@" && enable $name
1544 }
1545
1546 cp_if_changed(){
1547     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1548     mkdir -p "$(dirname $2)"
1549     cp -f "$1" "$2"
1550 }
1551
1552 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1553 # system-dependent things.
1554
1555 AVCODEC_COMPONENTS="
1556     bsfs
1557     decoders
1558     encoders
1559     hwaccels
1560     parsers
1561 "
1562
1563 AVDEVICE_COMPONENTS="
1564     indevs
1565     outdevs
1566 "
1567
1568 AVFILTER_COMPONENTS="
1569     filters
1570 "
1571
1572 AVFORMAT_COMPONENTS="
1573     demuxers
1574     muxers
1575     protocols
1576 "
1577
1578 COMPONENT_LIST="
1579     $AVCODEC_COMPONENTS
1580     $AVDEVICE_COMPONENTS
1581     $AVFILTER_COMPONENTS
1582     $AVFORMAT_COMPONENTS
1583 "
1584
1585 EXAMPLE_LIST="
1586     avio_dir_cmd_example
1587     avio_reading_example
1588     decode_audio_example
1589     decode_video_example
1590     demuxing_decoding_example
1591     encode_audio_example
1592     encode_video_example
1593     extract_mvs_example
1594     filter_audio_example
1595     filtering_audio_example
1596     filtering_video_example
1597     http_multiclient_example
1598     hw_decode_example
1599     metadata_example
1600     muxing_example
1601     qsvdec_example
1602     remuxing_example
1603     resampling_audio_example
1604     scaling_video_example
1605     transcode_aac_example
1606     transcoding_example
1607     vaapi_encode_example
1608     vaapi_transcode_example
1609 "
1610
1611 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1612     alsa
1613     appkit
1614     avfoundation
1615     bzlib
1616     coreimage
1617     iconv
1618     libxcb
1619     libxcb_shm
1620     libxcb_shape
1621     libxcb_xfixes
1622     lzma
1623     schannel
1624     sdl2
1625     securetransport
1626     sndio
1627     xlib
1628     zlib
1629 "
1630
1631 EXTERNAL_LIBRARY_GPL_LIST="
1632     avisynth
1633     frei0r
1634     libcdio
1635     librubberband
1636     libvidstab
1637     libx264
1638     libx265
1639     libxavs
1640     libxvid
1641 "
1642
1643 EXTERNAL_LIBRARY_NONFREE_LIST="
1644     decklink
1645     libndi_newtek
1646     libfdk_aac
1647     openssl
1648     libtls
1649 "
1650
1651 EXTERNAL_LIBRARY_VERSION3_LIST="
1652     gmp
1653     libopencore_amrnb
1654     libopencore_amrwb
1655     libvmaf
1656     libvo_amrwbenc
1657     rkmpp
1658 "
1659
1660 EXTERNAL_LIBRARY_GPLV3_LIST="
1661     libsmbclient
1662 "
1663
1664 EXTERNAL_LIBRARY_LIST="
1665     $EXTERNAL_LIBRARY_GPL_LIST
1666     $EXTERNAL_LIBRARY_NONFREE_LIST
1667     $EXTERNAL_LIBRARY_VERSION3_LIST
1668     $EXTERNAL_LIBRARY_GPLV3_LIST
1669     chromaprint
1670     gcrypt
1671     gnutls
1672     jni
1673     ladspa
1674     libaom
1675     libass
1676     libbluray
1677     libbs2b
1678     libcaca
1679     libcelt
1680     libcodec2
1681     libdc1394
1682     libdrm
1683     libflite
1684     libfontconfig
1685     libfreetype
1686     libfribidi
1687     libgme
1688     libgsm
1689     libiec61883
1690     libilbc
1691     libjack
1692     libkvazaar
1693     libmodplug
1694     libmp3lame
1695     libmysofa
1696     libopencv
1697     libopenh264
1698     libopenjpeg
1699     libopenmpt
1700     libopus
1701     libpulse
1702     librsvg
1703     librtmp
1704     libshine
1705     libsmbclient
1706     libsnappy
1707     libsoxr
1708     libspeex
1709     libsrt
1710     libssh
1711     libtesseract
1712     libtheora
1713     libtwolame
1714     libv4l2
1715     libvorbis
1716     libvpx
1717     libwavpack
1718     libwebp
1719     libxml2
1720     libzimg
1721     libzmq
1722     libzvbi
1723     lv2
1724     mediacodec
1725     openal
1726     opengl
1727 "
1728
1729 HWACCEL_AUTODETECT_LIBRARY_LIST="
1730     amf
1731     audiotoolbox
1732     crystalhd
1733     cuda
1734     cuvid
1735     d3d11va
1736     dxva2
1737     ffnvcodec
1738     nvdec
1739     nvenc
1740     vaapi
1741     vdpau
1742     videotoolbox
1743     v4l2_m2m
1744     xvmc
1745 "
1746
1747 # catchall list of things that require external libs to link
1748 EXTRALIBS_LIST="
1749     cpu_init
1750     cws2fws
1751 "
1752
1753 HWACCEL_LIBRARY_NONFREE_LIST="
1754     cuda_sdk
1755     libnpp
1756 "
1757
1758 HWACCEL_LIBRARY_LIST="
1759     $HWACCEL_LIBRARY_NONFREE_LIST
1760     libmfx
1761     mmal
1762     omx
1763     opencl
1764 "
1765
1766 DOCUMENT_LIST="
1767     doc
1768     htmlpages
1769     manpages
1770     podpages
1771     txtpages
1772 "
1773
1774 FEATURE_LIST="
1775     ftrapv
1776     gray
1777     hardcoded_tables
1778     omx_rpi
1779     runtime_cpudetect
1780     safe_bitstream_reader
1781     shared
1782     small
1783     static
1784     swscale_alpha
1785 "
1786
1787 LIBRARY_LIST="
1788     avcodec
1789     avdevice
1790     avfilter
1791     avformat
1792     avresample
1793     avutil
1794     postproc
1795     swresample
1796     swscale
1797 "
1798
1799 LICENSE_LIST="
1800     gpl
1801     nonfree
1802     version3
1803 "
1804
1805 PROGRAM_LIST="
1806     ffplay
1807     ffprobe
1808     ffmpeg
1809 "
1810
1811 SUBSYSTEM_LIST="
1812     dct
1813     dwt
1814     error_resilience
1815     faan
1816     fast_unaligned
1817     fft
1818     lsp
1819     lzo
1820     mdct
1821     pixelutils
1822     network
1823     rdft
1824 "
1825
1826 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1827 CONFIG_LIST="
1828     $DOCUMENT_LIST
1829     $EXAMPLE_LIST
1830     $EXTERNAL_LIBRARY_LIST
1831     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1832     $HWACCEL_LIBRARY_LIST
1833     $HWACCEL_AUTODETECT_LIBRARY_LIST
1834     $FEATURE_LIST
1835     $LICENSE_LIST
1836     $LIBRARY_LIST
1837     $PROGRAM_LIST
1838     $SUBSYSTEM_LIST
1839     autodetect
1840     fontconfig
1841     linux_perf
1842     memory_poisoning
1843     neon_clobber_test
1844     ossfuzz
1845     pic
1846     thumb
1847     valgrind_backtrace
1848     xmm_clobber_test
1849     $COMPONENT_LIST
1850 "
1851
1852 THREADS_LIST="
1853     pthreads
1854     os2threads
1855     w32threads
1856 "
1857
1858 ATOMICS_LIST="
1859     atomics_gcc
1860     atomics_suncc
1861     atomics_win32
1862 "
1863
1864 AUTODETECT_LIBS="
1865     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1866     $HWACCEL_AUTODETECT_LIBRARY_LIST
1867     $THREADS_LIST
1868 "
1869
1870 ARCH_LIST="
1871     aarch64
1872     alpha
1873     arm
1874     avr32
1875     avr32_ap
1876     avr32_uc
1877     bfin
1878     ia64
1879     m68k
1880     mips
1881     mips64
1882     parisc
1883     ppc
1884     ppc64
1885     s390
1886     sh4
1887     sparc
1888     sparc64
1889     tilegx
1890     tilepro
1891     tomi
1892     x86
1893     x86_32
1894     x86_64
1895 "
1896
1897 ARCH_EXT_LIST_ARM="
1898     armv5te
1899     armv6
1900     armv6t2
1901     armv8
1902     neon
1903     vfp
1904     vfpv3
1905     setend
1906 "
1907
1908 ARCH_EXT_LIST_MIPS="
1909     mipsfpu
1910     mips32r2
1911     mips32r5
1912     mips64r2
1913     mips32r6
1914     mips64r6
1915     mipsdsp
1916     mipsdspr2
1917     msa
1918 "
1919
1920 ARCH_EXT_LIST_LOONGSON="
1921     loongson2
1922     loongson3
1923     mmi
1924 "
1925
1926 ARCH_EXT_LIST_X86_SIMD="
1927     aesni
1928     amd3dnow
1929     amd3dnowext
1930     avx
1931     avx2
1932     avx512
1933     fma3
1934     fma4
1935     mmx
1936     mmxext
1937     sse
1938     sse2
1939     sse3
1940     sse4
1941     sse42
1942     ssse3
1943     xop
1944 "
1945
1946 ARCH_EXT_LIST_PPC="
1947     altivec
1948     dcbzl
1949     ldbrx
1950     power8
1951     ppc4xx
1952     vsx
1953 "
1954
1955 ARCH_EXT_LIST_X86="
1956     $ARCH_EXT_LIST_X86_SIMD
1957     cpunop
1958     i686
1959 "
1960
1961 ARCH_EXT_LIST="
1962     $ARCH_EXT_LIST_ARM
1963     $ARCH_EXT_LIST_PPC
1964     $ARCH_EXT_LIST_X86
1965     $ARCH_EXT_LIST_MIPS
1966     $ARCH_EXT_LIST_LOONGSON
1967 "
1968
1969 ARCH_FEATURES="
1970     aligned_stack
1971     fast_64bit
1972     fast_clz
1973     fast_cmov
1974     local_aligned
1975     simd_align_16
1976     simd_align_32
1977     simd_align_64
1978 "
1979
1980 BUILTIN_LIST="
1981     atomic_cas_ptr
1982     machine_rw_barrier
1983     MemoryBarrier
1984     mm_empty
1985     rdtsc
1986     sem_timedwait
1987     sync_val_compare_and_swap
1988 "
1989 HAVE_LIST_CMDLINE="
1990     inline_asm
1991     symver
1992     x86asm
1993 "
1994
1995 HAVE_LIST_PUB="
1996     bigendian
1997     fast_unaligned
1998 "
1999
2000 HEADERS_LIST="
2001     arpa_inet_h
2002     asm_types_h
2003     cdio_paranoia_h
2004     cdio_paranoia_paranoia_h
2005     cuda_h
2006     dispatch_dispatch_h
2007     dev_bktr_ioctl_bt848_h
2008     dev_bktr_ioctl_meteor_h
2009     dev_ic_bt8xx_h
2010     dev_video_bktr_ioctl_bt848_h
2011     dev_video_meteor_ioctl_meteor_h
2012     direct_h
2013     dirent_h
2014     dxgidebug_h
2015     dxva_h
2016     ES2_gl_h
2017     gsm_h
2018     io_h
2019     machine_ioctl_bt848_h
2020     machine_ioctl_meteor_h
2021     malloc_h
2022     opencv2_core_core_c_h
2023     OpenGL_gl3_h
2024     poll_h
2025     sys_param_h
2026     sys_resource_h
2027     sys_select_h
2028     sys_soundcard_h
2029     sys_time_h
2030     sys_un_h
2031     sys_videoio_h
2032     termios_h
2033     udplite_h
2034     unistd_h
2035     valgrind_valgrind_h
2036     windows_h
2037     winsock2_h
2038 "
2039
2040 INTRINSICS_LIST="
2041     intrinsics_neon
2042 "
2043
2044 COMPLEX_FUNCS="
2045     cabs
2046     cexp
2047 "
2048
2049 MATH_FUNCS="
2050     atanf
2051     atan2f
2052     cbrt
2053     cbrtf
2054     copysign
2055     cosf
2056     erf
2057     exp2
2058     exp2f
2059     expf
2060     hypot
2061     isfinite
2062     isinf
2063     isnan
2064     ldexpf
2065     llrint
2066     llrintf
2067     log2
2068     log2f
2069     log10f
2070     lrint
2071     lrintf
2072     powf
2073     rint
2074     round
2075     roundf
2076     sinf
2077     trunc
2078     truncf
2079 "
2080
2081 SYSTEM_FEATURES="
2082     dos_paths
2083     libc_msvcrt
2084     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2085     section_data_rel_ro
2086     threads
2087     uwp
2088     winrt
2089 "
2090
2091 SYSTEM_FUNCS="
2092     access
2093     aligned_malloc
2094     arc4random
2095     clock_gettime
2096     closesocket
2097     CommandLineToArgvW
2098     fcntl
2099     getaddrinfo
2100     gethrtime
2101     getopt
2102     GetProcessAffinityMask
2103     GetProcessMemoryInfo
2104     GetProcessTimes
2105     getrusage
2106     GetSystemTimeAsFileTime
2107     gettimeofday
2108     glob
2109     glXGetProcAddress
2110     gmtime_r
2111     inet_aton
2112     isatty
2113     kbhit
2114     localtime_r
2115     lstat
2116     lzo1x_999_compress
2117     mach_absolute_time
2118     MapViewOfFile
2119     memalign
2120     mkstemp
2121     mmap
2122     mprotect
2123     nanosleep
2124     PeekNamedPipe
2125     posix_memalign
2126     pthread_cancel
2127     sched_getaffinity
2128     SecItemImport
2129     SetConsoleTextAttribute
2130     SetConsoleCtrlHandler
2131     setmode
2132     setrlimit
2133     Sleep
2134     strerror_r
2135     sysconf
2136     sysctl
2137     usleep
2138     UTGetOSTypeFromString
2139     VirtualAlloc
2140     wglGetProcAddress
2141 "
2142
2143 SYSTEM_LIBRARIES="
2144     vaapi_drm
2145     vaapi_x11
2146     vdpau_x11
2147     wincrypt
2148 "
2149
2150 TOOLCHAIN_FEATURES="
2151     as_arch_directive
2152     as_dn_directive
2153     as_fpu_directive
2154     as_func
2155     as_object_arch
2156     asm_mod_q
2157     blocks_extension
2158     ebp_available
2159     ebx_available
2160     gnu_as
2161     gnu_windres
2162     ibm_asm
2163     inline_asm_direct_symbol_refs
2164     inline_asm_labels
2165     inline_asm_nonlocal_labels
2166     pragma_deprecated
2167     rsync_contimeout
2168     symver_asm_label
2169     symver_gnu_asm
2170     vfp_args
2171     xform_asm
2172     xmm_clobbers
2173 "
2174
2175 TYPES_LIST="
2176     kCMVideoCodecType_HEVC
2177     socklen_t
2178     struct_addrinfo
2179     struct_group_source_req
2180     struct_ip_mreq_source
2181     struct_ipv6_mreq
2182     struct_msghdr_msg_flags
2183     struct_pollfd
2184     struct_rusage_ru_maxrss
2185     struct_sctp_event_subscribe
2186     struct_sockaddr_in6
2187     struct_sockaddr_sa_len
2188     struct_sockaddr_storage
2189     struct_stat_st_mtim_tv_nsec
2190     struct_v4l2_frmivalenum_discrete
2191 "
2192
2193 HAVE_LIST="
2194     $ARCH_EXT_LIST
2195     $(add_suffix _external $ARCH_EXT_LIST)
2196     $(add_suffix _inline   $ARCH_EXT_LIST)
2197     $ARCH_FEATURES
2198     $BUILTIN_LIST
2199     $COMPLEX_FUNCS
2200     $HAVE_LIST_CMDLINE
2201     $HAVE_LIST_PUB
2202     $HEADERS_LIST
2203     $INTRINSICS_LIST
2204     $MATH_FUNCS
2205     $SYSTEM_FEATURES
2206     $SYSTEM_FUNCS
2207     $SYSTEM_LIBRARIES
2208     $THREADS_LIST
2209     $TOOLCHAIN_FEATURES
2210     $TYPES_LIST
2211     makeinfo
2212     makeinfo_html
2213     opencl_d3d11
2214     opencl_drm_arm
2215     opencl_drm_beignet
2216     opencl_dxva2
2217     opencl_vaapi_beignet
2218     opencl_vaapi_intel_media
2219     perl
2220     pod2man
2221     texi2html
2222 "
2223
2224 # options emitted with CONFIG_ prefix but not available on the command line
2225 CONFIG_EXTRA="
2226     aandcttables
2227     ac3dsp
2228     adts_header
2229     audio_frame_queue
2230     audiodsp
2231     blockdsp
2232     bswapdsp
2233     cabac
2234     cbs
2235     cbs_h264
2236     cbs_h265
2237     cbs_mpeg2
2238     dirac_parse
2239     dvprofile
2240     exif
2241     faandct
2242     faanidct
2243     fdctdsp
2244     flacdsp
2245     fmtconvert
2246     frame_thread_encoder
2247     g722dsp
2248     golomb
2249     gplv3
2250     h263dsp
2251     h264chroma
2252     h264dsp
2253     h264parse
2254     h264pred
2255     h264qpel
2256     hevcparse
2257     hpeldsp
2258     huffman
2259     huffyuvdsp
2260     huffyuvencdsp
2261     idctdsp
2262     iirfilter
2263     mdct15
2264     intrax8
2265     iso_media
2266     ividsp
2267     jpegtables
2268     lgplv3
2269     libx262
2270     llauddsp
2271     llviddsp
2272     llvidencdsp
2273     lpc
2274     lzf
2275     me_cmp
2276     mpeg_er
2277     mpegaudio
2278     mpegaudiodsp
2279     mpegaudioheader
2280     mpegvideo
2281     mpegvideoenc
2282     mss34dsp
2283     pixblockdsp
2284     qpeldsp
2285     qsv
2286     qsvdec
2287     qsvenc
2288     qsvvpp
2289     rangecoder
2290     riffdec
2291     riffenc
2292     rtpdec
2293     rtpenc_chain
2294     rv34dsp
2295     sinewin
2296     snappy
2297     srtp
2298     startcode
2299     texturedsp
2300     texturedspenc
2301     tpeldsp
2302     vaapi_1
2303     vaapi_encode
2304     vc1dsp
2305     videodsp
2306     vp3dsp
2307     vp56dsp
2308     vp8dsp
2309     wma_freqs
2310     wmv2dsp
2311 "
2312
2313 CMDLINE_SELECT="
2314     $ARCH_EXT_LIST
2315     $CONFIG_LIST
2316     $HAVE_LIST_CMDLINE
2317     $THREADS_LIST
2318     asm
2319     cross_compile
2320     debug
2321     extra_warnings
2322     logging
2323     lto
2324     optimizations
2325     rpath
2326     stripping
2327 "
2328
2329 PATHS_LIST="
2330     bindir
2331     datadir
2332     docdir
2333     incdir
2334     libdir
2335     mandir
2336     pkgconfigdir
2337     prefix
2338     shlibdir
2339     install_name_dir
2340 "
2341
2342 CMDLINE_SET="
2343     $PATHS_LIST
2344     ar
2345     arch
2346     as
2347     assert_level
2348     build_suffix
2349     cc
2350     objcc
2351     cpu
2352     cross_prefix
2353     custom_allocator
2354     cxx
2355     dep_cc
2356     doxygen
2357     env
2358     extra_version
2359     gas
2360     host_cc
2361     host_cflags
2362     host_extralibs
2363     host_ld
2364     host_ldflags
2365     host_os
2366     ignore_tests
2367     install
2368     ld
2369     ln_s
2370     logfile
2371     malloc_prefix
2372     nm
2373     optflags
2374     nvccflags
2375     pkg_config
2376     pkg_config_flags
2377     progs_suffix
2378     random_seed
2379     ranlib
2380     samples
2381     strip
2382     sws_max_filter_size
2383     sysinclude
2384     sysroot
2385     target_exec
2386     target_os
2387     target_path
2388     target_samples
2389     tempprefix
2390     toolchain
2391     valgrind
2392     x86asmexe
2393 "
2394
2395 CMDLINE_APPEND="
2396     extra_cflags
2397     extra_cxxflags
2398     extra_objcflags
2399     host_cppflags
2400 "
2401
2402 # code dependency declarations
2403
2404 # architecture extensions
2405
2406 armv5te_deps="arm"
2407 armv6_deps="arm"
2408 armv6t2_deps="arm"
2409 armv8_deps="aarch64"
2410 neon_deps_any="aarch64 arm"
2411 intrinsics_neon_deps="neon"
2412 vfp_deps_any="aarch64 arm"
2413 vfpv3_deps="vfp"
2414 setend_deps="arm"
2415
2416 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2417
2418 altivec_deps="ppc"
2419 dcbzl_deps="ppc"
2420 ldbrx_deps="ppc"
2421 ppc4xx_deps="ppc"
2422 vsx_deps="altivec"
2423 power8_deps="vsx"
2424
2425 loongson2_deps="mips"
2426 loongson3_deps="mips"
2427 mips32r2_deps="mips"
2428 mips32r5_deps="mips"
2429 mips32r6_deps="mips"
2430 mips64r2_deps="mips"
2431 mips64r6_deps="mips"
2432 mipsfpu_deps="mips"
2433 mipsdsp_deps="mips"
2434 mipsdspr2_deps="mips"
2435 mmi_deps="mips"
2436 msa_deps="mipsfpu"
2437
2438 cpunop_deps="i686"
2439 x86_64_select="i686"
2440 x86_64_suggest="fast_cmov"
2441
2442 amd3dnow_deps="mmx"
2443 amd3dnowext_deps="amd3dnow"
2444 i686_deps="x86"
2445 mmx_deps="x86"
2446 mmxext_deps="mmx"
2447 sse_deps="mmxext"
2448 sse2_deps="sse"
2449 sse3_deps="sse2"
2450 ssse3_deps="sse3"
2451 sse4_deps="ssse3"
2452 sse42_deps="sse4"
2453 aesni_deps="sse42"
2454 avx_deps="sse42"
2455 xop_deps="avx"
2456 fma3_deps="avx"
2457 fma4_deps="avx"
2458 avx2_deps="avx"
2459 avx512_deps="avx2"
2460
2461 mmx_external_deps="x86asm"
2462 mmx_inline_deps="inline_asm x86"
2463 mmx_suggest="mmx_external mmx_inline"
2464
2465 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2466     eval dep=\$${ext}_deps
2467     eval ${ext}_external_deps='"${dep}_external"'
2468     eval ${ext}_inline_deps='"${dep}_inline"'
2469     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2470 done
2471
2472 aligned_stack_if_any="aarch64 ppc x86"
2473 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2474 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2475 fast_unaligned_if_any="aarch64 ppc x86"
2476 simd_align_16_if_any="altivec neon sse"
2477 simd_align_32_if_any="avx"
2478 simd_align_64_if_any="avx512"
2479
2480 # system capabilities
2481 symver_if_any="symver_asm_label symver_gnu_asm"
2482 valgrind_backtrace_conflict="optimizations"
2483 valgrind_backtrace_deps="valgrind_valgrind_h"
2484
2485 # threading support
2486 atomics_gcc_if="sync_val_compare_and_swap"
2487 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2488 atomics_win32_if="MemoryBarrier"
2489 atomics_native_if_any="$ATOMICS_LIST"
2490 w32threads_deps="atomics_native"
2491 threads_if_any="$THREADS_LIST"
2492
2493 # subsystems
2494 cbs_h264_select="cbs golomb"
2495 cbs_h265_select="cbs golomb"
2496 cbs_mpeg2_select="cbs"
2497 dct_select="rdft"
2498 dirac_parse_select="golomb"
2499 error_resilience_select="me_cmp"
2500 faandct_deps="faan"
2501 faandct_select="fdctdsp"
2502 faanidct_deps="faan"
2503 faanidct_select="idctdsp"
2504 h264dsp_select="startcode"
2505 hevcparse_select="golomb"
2506 frame_thread_encoder_deps="encoders threads"
2507 intrax8_select="blockdsp idctdsp"
2508 mdct_select="fft"
2509 mdct15_select="fft"
2510 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2511 mpeg_er_select="error_resilience"
2512 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2513 mpegaudiodsp_select="dct"
2514 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2515 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2516 vc1dsp_select="h264chroma qpeldsp startcode"
2517 rdft_select="fft"
2518
2519 # decoders / encoders
2520 aac_decoder_select="adts_header mdct15 mdct sinewin"
2521 aac_fixed_decoder_select="adts_header mdct sinewin"
2522 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2523 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2524 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2525 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2526 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2527 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2528 adpcm_g722_decoder_select="g722dsp"
2529 adpcm_g722_encoder_select="g722dsp"
2530 aic_decoder_select="golomb idctdsp"
2531 alac_encoder_select="lpc"
2532 als_decoder_select="bswapdsp"
2533 amrnb_decoder_select="lsp"
2534 amrwb_decoder_select="lsp"
2535 amv_decoder_select="sp5x_decoder exif"
2536 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2537 ape_decoder_select="bswapdsp llauddsp"
2538 apng_decoder_deps="zlib"
2539 apng_encoder_deps="zlib"
2540 apng_encoder_select="llvidencdsp"
2541 aptx_decoder_select="audio_frame_queue"
2542 aptx_encoder_select="audio_frame_queue"
2543 aptx_hd_decoder_select="audio_frame_queue"
2544 aptx_hd_encoder_select="audio_frame_queue"
2545 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2546 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2547 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2548 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2549 atrac1_decoder_select="mdct sinewin"
2550 atrac3_decoder_select="mdct"
2551 atrac3p_decoder_select="mdct sinewin"
2552 avrn_decoder_select="exif jpegtables"
2553 bink_decoder_select="blockdsp hpeldsp"
2554 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2555 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2556 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2557 clearvideo_decoder_select="idctdsp"
2558 cllc_decoder_select="bswapdsp"
2559 comfortnoise_encoder_select="lpc"
2560 cook_decoder_select="audiodsp mdct sinewin"
2561 cscd_decoder_select="lzo"
2562 cscd_decoder_suggest="zlib"
2563 dca_decoder_select="mdct"
2564 dds_decoder_select="texturedsp"
2565 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2566 dnxhd_decoder_select="blockdsp idctdsp"
2567 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2568 dolby_e_decoder_select="mdct"
2569 dvvideo_decoder_select="dvprofile idctdsp"
2570 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2571 dxa_decoder_deps="zlib"
2572 dxv_decoder_select="lzf texturedsp"
2573 eac3_decoder_select="ac3_decoder"
2574 eac3_encoder_select="ac3_encoder"
2575 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2576 eatgq_decoder_select="aandcttables"
2577 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2578 exr_decoder_deps="zlib"
2579 ffv1_decoder_select="rangecoder"
2580 ffv1_encoder_select="rangecoder"
2581 ffvhuff_decoder_select="huffyuv_decoder"
2582 ffvhuff_encoder_select="huffyuv_encoder"
2583 fic_decoder_select="golomb"
2584 flac_decoder_select="flacdsp"
2585 flac_encoder_select="bswapdsp flacdsp lpc"
2586 flashsv2_decoder_deps="zlib"
2587 flashsv2_encoder_deps="zlib"
2588 flashsv_decoder_deps="zlib"
2589 flashsv_encoder_deps="zlib"
2590 flv_decoder_select="h263_decoder"
2591 flv_encoder_select="h263_encoder"
2592 fourxm_decoder_select="blockdsp bswapdsp"
2593 fraps_decoder_select="bswapdsp huffman"
2594 g2m_decoder_deps="zlib"
2595 g2m_decoder_select="blockdsp idctdsp jpegtables"
2596 g729_decoder_select="audiodsp"
2597 h261_decoder_select="mpegvideo"
2598 h261_encoder_select="aandcttables mpegvideoenc"
2599 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2600 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2601 h263i_decoder_select="h263_decoder"
2602 h263p_decoder_select="h263_decoder"
2603 h263p_encoder_select="h263_encoder"
2604 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2605 h264_decoder_suggest="error_resilience"
2606 hap_decoder_select="snappy texturedsp"
2607 hap_encoder_deps="libsnappy"
2608 hap_encoder_select="texturedspenc"
2609 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2610 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2611 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2612 iac_decoder_select="imc_decoder"
2613 imc_decoder_select="bswapdsp fft mdct sinewin"
2614 indeo3_decoder_select="hpeldsp"
2615 indeo4_decoder_select="ividsp"
2616 indeo5_decoder_select="ividsp"
2617 interplay_video_decoder_select="hpeldsp"
2618 jpegls_decoder_select="mjpeg_decoder"
2619 jv_decoder_select="blockdsp"
2620 lagarith_decoder_select="llviddsp"
2621 ljpeg_encoder_select="aandcttables idctdsp jpegtables mpegvideoenc"
2622 magicyuv_decoder_select="llviddsp"
2623 magicyuv_encoder_select="llvidencdsp"
2624 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2625 metasound_decoder_select="lsp mdct sinewin"
2626 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2627 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2628 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2629 mjpegb_decoder_select="mjpeg_decoder"
2630 mlp_decoder_select="mlp_parser"
2631 mlp_encoder_select="lpc"
2632 motionpixels_decoder_select="bswapdsp"
2633 mp1_decoder_select="mpegaudio"
2634 mp1float_decoder_select="mpegaudio"
2635 mp2_decoder_select="mpegaudio"
2636 mp2float_decoder_select="mpegaudio"
2637 mp3_decoder_select="mpegaudio"
2638 mp3adu_decoder_select="mpegaudio"
2639 mp3adufloat_decoder_select="mpegaudio"
2640 mp3float_decoder_select="mpegaudio"
2641 mp3on4_decoder_select="mpegaudio"
2642 mp3on4float_decoder_select="mpegaudio"
2643 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2644 mpc8_decoder_select="mpegaudiodsp"
2645 mpegvideo_decoder_select="mpegvideo"
2646 mpeg1video_decoder_select="mpegvideo"
2647 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2648 mpeg2video_decoder_select="mpegvideo"
2649 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2650 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2651 mpeg4_encoder_select="h263_encoder"
2652 msa1_decoder_select="mss34dsp"
2653 mscc_decoder_deps="zlib"
2654 msmpeg4v1_decoder_select="h263_decoder"
2655 msmpeg4v2_decoder_select="h263_decoder"
2656 msmpeg4v2_encoder_select="h263_encoder"
2657 msmpeg4v3_decoder_select="h263_decoder"
2658 msmpeg4v3_encoder_select="h263_encoder"
2659 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2660 mts2_decoder_select="mss34dsp"
2661 mxpeg_decoder_select="mjpeg_decoder"
2662 nellymoser_decoder_select="mdct sinewin"
2663 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2664 nuv_decoder_select="idctdsp lzo"
2665 on2avc_decoder_select="mdct"
2666 opus_decoder_deps="swresample"
2667 opus_decoder_select="mdct15"
2668 opus_encoder_select="audio_frame_queue mdct15"
2669 png_decoder_deps="zlib"
2670 png_encoder_deps="zlib"
2671 png_encoder_select="llvidencdsp"
2672 prores_decoder_select="blockdsp idctdsp"
2673 prores_encoder_select="fdctdsp"
2674 qcelp_decoder_select="lsp"
2675 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2676 ra_144_decoder_select="audiodsp"
2677 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2678 ralf_decoder_select="golomb"
2679 rawvideo_decoder_select="bswapdsp"
2680 rscc_decoder_deps="zlib"
2681 rtjpeg_decoder_select="me_cmp"
2682 rv10_decoder_select="h263_decoder"
2683 rv10_encoder_select="h263_encoder"
2684 rv20_decoder_select="h263_decoder"
2685 rv20_encoder_select="h263_encoder"
2686 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2687 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2688 screenpresso_decoder_deps="zlib"
2689 shorten_decoder_select="bswapdsp"
2690 sipr_decoder_select="lsp"
2691 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2692 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2693 sonic_decoder_select="golomb rangecoder"
2694 sonic_encoder_select="golomb rangecoder"
2695 sonic_ls_encoder_select="golomb rangecoder"
2696 sp5x_decoder_select="mjpeg_decoder"
2697 srgc_decoder_deps="zlib"
2698 svq1_decoder_select="hpeldsp"
2699 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2700 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2701 svq3_decoder_suggest="zlib"
2702 tak_decoder_select="audiodsp"
2703 tdsc_decoder_deps="zlib"
2704 tdsc_decoder_select="mjpeg_decoder"
2705 theora_decoder_select="vp3_decoder"
2706 thp_decoder_select="mjpeg_decoder"
2707 tiff_decoder_suggest="zlib lzma"
2708 tiff_encoder_suggest="zlib"
2709 truehd_decoder_select="mlp_parser"
2710 truehd_encoder_select="lpc"
2711 truemotion2_decoder_select="bswapdsp"
2712 truespeech_decoder_select="bswapdsp"
2713 tscc_decoder_deps="zlib"
2714 twinvq_decoder_select="mdct lsp sinewin"
2715 txd_decoder_select="texturedsp"
2716 utvideo_decoder_select="bswapdsp llviddsp"
2717 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2718 vble_decoder_select="llviddsp"
2719 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2720 vc1image_decoder_select="vc1_decoder"
2721 vorbis_decoder_select="mdct"
2722 vorbis_encoder_select="audio_frame_queue mdct"
2723 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2724 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2725 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2726 vp6a_decoder_select="vp6_decoder"
2727 vp6f_decoder_select="vp6_decoder"
2728 vp7_decoder_select="h264pred videodsp vp8dsp"
2729 vp8_decoder_select="h264pred videodsp vp8dsp"
2730 vp9_decoder_select="videodsp vp9_parser vp9_superframe_split_bsf"
2731 webp_decoder_select="vp8_decoder exif"
2732 wmalossless_decoder_select="llauddsp"
2733 wmapro_decoder_select="mdct sinewin wma_freqs"
2734 wmav1_decoder_select="mdct sinewin wma_freqs"
2735 wmav1_encoder_select="mdct sinewin wma_freqs"
2736 wmav2_decoder_select="mdct sinewin wma_freqs"
2737 wmav2_encoder_select="mdct sinewin wma_freqs"
2738 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2739 wmv1_decoder_select="h263_decoder"
2740 wmv1_encoder_select="h263_encoder"
2741 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2742 wmv2_encoder_select="h263_encoder wmv2dsp"
2743 wmv3_decoder_select="vc1_decoder"
2744 wmv3image_decoder_select="wmv3_decoder"
2745 xma1_decoder_select="wmapro_decoder"
2746 xma2_decoder_select="wmapro_decoder"
2747 zerocodec_decoder_deps="zlib"
2748 zlib_decoder_deps="zlib"
2749 zlib_encoder_deps="zlib"
2750 zmbv_decoder_deps="zlib"
2751 zmbv_encoder_deps="zlib"
2752
2753 # hardware accelerators
2754 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2755 cuda_deps="ffnvcodec"
2756 cuvid_deps="ffnvcodec"
2757 d3d11va_deps="dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2758 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32 user32"
2759 ffnvcodec_deps_any="libdl LoadLibrary"
2760 nvdec_deps="ffnvcodec"
2761 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2762 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2763 xvmc_deps="X11_extensions_XvMClib_h"
2764
2765 h263_vaapi_hwaccel_deps="vaapi"
2766 h263_vaapi_hwaccel_select="h263_decoder"
2767 h263_videotoolbox_hwaccel_deps="videotoolbox"
2768 h263_videotoolbox_hwaccel_select="h263_decoder"
2769 h264_d3d11va_hwaccel_deps="d3d11va"
2770 h264_d3d11va_hwaccel_select="h264_decoder"
2771 h264_d3d11va2_hwaccel_deps="d3d11va"
2772 h264_d3d11va2_hwaccel_select="h264_decoder"
2773 h264_dxva2_hwaccel_deps="dxva2"
2774 h264_dxva2_hwaccel_select="h264_decoder"
2775 h264_nvdec_hwaccel_deps="nvdec"
2776 h264_nvdec_hwaccel_select="h264_decoder"
2777 h264_vaapi_hwaccel_deps="vaapi"
2778 h264_vaapi_hwaccel_select="h264_decoder"
2779 h264_vdpau_hwaccel_deps="vdpau"
2780 h264_vdpau_hwaccel_select="h264_decoder"
2781 h264_videotoolbox_hwaccel_deps="videotoolbox"
2782 h264_videotoolbox_hwaccel_select="h264_decoder"
2783 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2784 hevc_d3d11va_hwaccel_select="hevc_decoder"
2785 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2786 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2787 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2788 hevc_dxva2_hwaccel_select="hevc_decoder"
2789 hevc_nvdec_hwaccel_deps="nvdec"
2790 hevc_nvdec_hwaccel_select="hevc_decoder"
2791 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2792 hevc_vaapi_hwaccel_select="hevc_decoder"
2793 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2794 hevc_vdpau_hwaccel_select="hevc_decoder"
2795 hevc_videotoolbox_hwaccel_deps="videotoolbox"
2796 hevc_videotoolbox_hwaccel_select="hevc_decoder"
2797 mjpeg_nvdec_hwaccel_deps="nvdec"
2798 mjpeg_nvdec_hwaccel_select="mjpeg_decoder"
2799 mjpeg_vaapi_hwaccel_deps="vaapi"
2800 mjpeg_vaapi_hwaccel_select="mjpeg_decoder"
2801 mpeg_xvmc_hwaccel_deps="xvmc"
2802 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2803 mpeg1_nvdec_hwaccel_deps="nvdec"
2804 mpeg1_nvdec_hwaccel_select="mpeg1video_decoder"
2805 mpeg1_vdpau_hwaccel_deps="vdpau"
2806 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2807 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2808 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2809 mpeg1_xvmc_hwaccel_deps="xvmc"
2810 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2811 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2812 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2813 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2814 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2815 mpeg2_dxva2_hwaccel_deps="dxva2"
2816 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2817 mpeg2_nvdec_hwaccel_deps="nvdec"
2818 mpeg2_nvdec_hwaccel_select="mpeg2video_decoder"
2819 mpeg2_vaapi_hwaccel_deps="vaapi"
2820 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2821 mpeg2_vdpau_hwaccel_deps="vdpau"
2822 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2823 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2824 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2825 mpeg2_xvmc_hwaccel_deps="xvmc"
2826 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2827 mpeg4_nvdec_hwaccel_deps="nvdec"
2828 mpeg4_nvdec_hwaccel_select="mpeg4_decoder"
2829 mpeg4_vaapi_hwaccel_deps="vaapi"
2830 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2831 mpeg4_vdpau_hwaccel_deps="vdpau"
2832 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2833 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2834 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2835 vc1_d3d11va_hwaccel_deps="d3d11va"
2836 vc1_d3d11va_hwaccel_select="vc1_decoder"
2837 vc1_d3d11va2_hwaccel_deps="d3d11va"
2838 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2839 vc1_dxva2_hwaccel_deps="dxva2"
2840 vc1_dxva2_hwaccel_select="vc1_decoder"
2841 vc1_nvdec_hwaccel_deps="nvdec"
2842 vc1_nvdec_hwaccel_select="vc1_decoder"
2843 vc1_vaapi_hwaccel_deps="vaapi"
2844 vc1_vaapi_hwaccel_select="vc1_decoder"
2845 vc1_vdpau_hwaccel_deps="vdpau"
2846 vc1_vdpau_hwaccel_select="vc1_decoder"
2847 vp8_nvdec_hwaccel_deps="nvdec"
2848 vp8_nvdec_hwaccel_select="vp8_decoder"
2849 vp8_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferVP8"
2850 vp8_vaapi_hwaccel_select="vp8_decoder"
2851 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2852 vp9_d3d11va_hwaccel_select="vp9_decoder"
2853 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2854 vp9_d3d11va2_hwaccel_select="vp9_decoder"
2855 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2856 vp9_dxva2_hwaccel_select="vp9_decoder"
2857 vp9_nvdec_hwaccel_deps="nvdec"
2858 vp9_nvdec_hwaccel_select="vp9_decoder"
2859 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2860 vp9_vaapi_hwaccel_select="vp9_decoder"
2861 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2862 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2863 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2864 wmv3_nvdec_hwaccel_select="vc1_nvdec_hwaccel"
2865 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2866 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2867
2868 # hardware-accelerated codecs
2869 omx_deps="libdl pthreads"
2870 omx_rpi_select="omx"
2871 qsv_deps="libmfx"
2872 qsvdec_select="qsv"
2873 qsvenc_select="qsv"
2874 qsvvpp_select="qsv"
2875 vaapi_encode_deps="vaapi"
2876 v4l2_m2m_deps_any="linux_videodev2_h"
2877
2878 hwupload_cuda_filter_deps="ffnvcodec"
2879 scale_npp_filter_deps="ffnvcodec libnpp"
2880 scale_cuda_filter_deps="cuda_sdk"
2881 thumbnail_cuda_filter_deps="cuda_sdk"
2882
2883 amf_deps_any="libdl LoadLibrary"
2884 nvenc_deps="ffnvcodec"
2885 nvenc_deps_any="libdl LoadLibrary"
2886 nvenc_encoder_deps="nvenc"
2887
2888 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
2889 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
2890 h264_amf_encoder_deps="amf"
2891 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2892 h264_cuvid_decoder_deps="cuvid"
2893 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2894 h264_mediacodec_decoder_deps="mediacodec"
2895 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2896 h264_mmal_decoder_deps="mmal"
2897 h264_nvenc_encoder_deps="nvenc"
2898 h264_omx_encoder_deps="omx"
2899 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec"
2900 h264_qsv_encoder_select="qsvenc"
2901 h264_rkmpp_decoder_deps="rkmpp"
2902 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
2903 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2904 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
2905 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
2906 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
2907 hevc_amf_encoder_deps="amf"
2908 hevc_cuvid_decoder_deps="cuvid"
2909 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
2910 hevc_mediacodec_decoder_deps="mediacodec"
2911 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2912 hevc_nvenc_encoder_deps="nvenc"
2913 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec"
2914 hevc_qsv_encoder_select="hevcparse qsvenc"
2915 hevc_rkmpp_decoder_deps="rkmpp"
2916 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
2917 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2918 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
2919 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
2920 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
2921 mjpeg_cuvid_decoder_deps="cuvid"
2922 mjpeg_qsv_encoder_deps="libmfx"
2923 mjpeg_qsv_encoder_select="qsvenc"
2924 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2925 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2926 mpeg1_cuvid_decoder_deps="cuvid"
2927 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
2928 mpeg2_crystalhd_decoder_select="crystalhd"
2929 mpeg2_cuvid_decoder_deps="cuvid"
2930 mpeg2_mmal_decoder_deps="mmal"
2931 mpeg2_mediacodec_decoder_deps="mediacodec"
2932 mpeg2_qsv_decoder_select="qsvdec mpegvideo_parser"
2933 mpeg2_qsv_encoder_select="qsvenc"
2934 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2935 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
2936 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
2937 mpeg4_crystalhd_decoder_select="crystalhd"
2938 mpeg4_cuvid_decoder_deps="cuvid"
2939 mpeg4_mediacodec_decoder_deps="mediacodec"
2940 mpeg4_mmal_decoder_deps="mmal"
2941 mpeg4_omx_encoder_deps="omx"
2942 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2943 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2944 msmpeg4_crystalhd_decoder_select="crystalhd"
2945 nvenc_h264_encoder_select="h264_nvenc_encoder"
2946 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2947 vc1_crystalhd_decoder_select="crystalhd"
2948 vc1_cuvid_decoder_deps="cuvid"
2949 vc1_mmal_decoder_deps="mmal"
2950 vc1_qsv_decoder_select="qsvdec vc1_parser"
2951 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
2952 vp8_cuvid_decoder_deps="cuvid"
2953 vp8_mediacodec_decoder_deps="mediacodec"
2954 vp8_qsv_decoder_select="qsvdec vp8_parser"
2955 vp8_rkmpp_decoder_deps="rkmpp"
2956 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2957 vp8_vaapi_encoder_select="vaapi_encode"
2958 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
2959 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
2960 vp9_cuvid_decoder_deps="cuvid"
2961 vp9_mediacodec_decoder_deps="mediacodec"
2962 vp9_rkmpp_decoder_deps="rkmpp"
2963 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
2964 vp9_vaapi_encoder_select="vaapi_encode"
2965 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
2966 wmv3_crystalhd_decoder_select="crystalhd"
2967
2968 # parsers
2969 aac_parser_select="adts_header"
2970 h264_parser_select="golomb h264dsp h264parse"
2971 hevc_parser_select="hevcparse"
2972 mpegaudio_parser_select="mpegaudioheader"
2973 mpegvideo_parser_select="mpegvideo"
2974 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2975 vc1_parser_select="vc1dsp"
2976
2977 # bitstream_filters
2978 aac_adtstoasc_bsf_select="adts_header"
2979 filter_units_bsf_select="cbs"
2980 h264_metadata_bsf_deps="const_nan"
2981 h264_metadata_bsf_select="cbs_h264"
2982 h264_redundant_pps_bsf_select="cbs_h264"
2983 hevc_metadata_bsf_select="cbs_h265"
2984 mjpeg2jpeg_bsf_select="jpegtables"
2985 mpeg2_metadata_bsf_select="cbs_mpeg2"
2986 trace_headers_bsf_select="cbs"
2987
2988 # external libraries
2989 aac_at_decoder_deps="audiotoolbox"
2990 aac_at_decoder_select="aac_adtstoasc_bsf"
2991 ac3_at_decoder_deps="audiotoolbox"
2992 ac3_at_decoder_select="ac3_parser"
2993 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2994 alac_at_decoder_deps="audiotoolbox"
2995 amr_nb_at_decoder_deps="audiotoolbox"
2996 avisynth_deps_any="libdl LoadLibrary"
2997 avisynth_demuxer_deps="avisynth"
2998 avisynth_demuxer_select="riffdec"
2999 eac3_at_decoder_deps="audiotoolbox"
3000 eac3_at_decoder_select="ac3_parser"
3001 gsm_ms_at_decoder_deps="audiotoolbox"
3002 ilbc_at_decoder_deps="audiotoolbox"
3003 mp1_at_decoder_deps="audiotoolbox"
3004 mp2_at_decoder_deps="audiotoolbox"
3005 mp3_at_decoder_deps="audiotoolbox"
3006 mp1_at_decoder_select="mpegaudioheader"
3007 mp2_at_decoder_select="mpegaudioheader"
3008 mp3_at_decoder_select="mpegaudioheader"
3009 pcm_alaw_at_decoder_deps="audiotoolbox"
3010 pcm_mulaw_at_decoder_deps="audiotoolbox"
3011 qdmc_at_decoder_deps="audiotoolbox"
3012 qdm2_at_decoder_deps="audiotoolbox"
3013 aac_at_encoder_deps="audiotoolbox"
3014 aac_at_encoder_select="audio_frame_queue"
3015 alac_at_encoder_deps="audiotoolbox"
3016 alac_at_encoder_select="audio_frame_queue"
3017 ilbc_at_encoder_deps="audiotoolbox"
3018 ilbc_at_encoder_select="audio_frame_queue"
3019 pcm_alaw_at_encoder_deps="audiotoolbox"
3020 pcm_alaw_at_encoder_select="audio_frame_queue"
3021 pcm_mulaw_at_encoder_deps="audiotoolbox"
3022 pcm_mulaw_at_encoder_select="audio_frame_queue"
3023 chromaprint_muxer_deps="chromaprint"
3024 h264_videotoolbox_encoder_deps="pthreads"
3025 h264_videotoolbox_encoder_select="videotoolbox_encoder"
3026 hevc_videotoolbox_encoder_deps="pthreads"
3027 hevc_videotoolbox_encoder_select="videotoolbox_encoder"
3028 libaom_av1_decoder_deps="libaom"
3029 libaom_av1_encoder_deps="libaom"
3030 libcelt_decoder_deps="libcelt"
3031 libcodec2_decoder_deps="libcodec2"
3032 libcodec2_encoder_deps="libcodec2"
3033 libfdk_aac_decoder_deps="libfdk_aac"
3034 libfdk_aac_encoder_deps="libfdk_aac"
3035 libfdk_aac_encoder_select="audio_frame_queue"
3036 libgme_demuxer_deps="libgme"
3037 libgsm_decoder_deps="libgsm"
3038 libgsm_encoder_deps="libgsm"
3039 libgsm_ms_decoder_deps="libgsm"
3040 libgsm_ms_encoder_deps="libgsm"
3041 libilbc_decoder_deps="libilbc"
3042 libilbc_encoder_deps="libilbc"
3043 libkvazaar_encoder_deps="libkvazaar"
3044 libmodplug_demuxer_deps="libmodplug"
3045 libmp3lame_encoder_deps="libmp3lame"
3046 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
3047 libopencore_amrnb_decoder_deps="libopencore_amrnb"
3048 libopencore_amrnb_encoder_deps="libopencore_amrnb"
3049 libopencore_amrnb_encoder_select="audio_frame_queue"
3050 libopencore_amrwb_decoder_deps="libopencore_amrwb"
3051 libopenh264_decoder_deps="libopenh264"
3052 libopenh264_decoder_select="h264_mp4toannexb_bsf"
3053 libopenh264_encoder_deps="libopenh264"
3054 libopenjpeg_decoder_deps="libopenjpeg"
3055 libopenjpeg_encoder_deps="libopenjpeg"
3056 libopenmpt_demuxer_deps="libopenmpt"
3057 libopus_decoder_deps="libopus"
3058 libopus_encoder_deps="libopus"
3059 libopus_encoder_select="audio_frame_queue"
3060 librsvg_decoder_deps="librsvg"
3061 libshine_encoder_deps="libshine"
3062 libshine_encoder_select="audio_frame_queue"
3063 libspeex_decoder_deps="libspeex"
3064 libspeex_encoder_deps="libspeex"
3065 libspeex_encoder_select="audio_frame_queue"
3066 libtheora_encoder_deps="libtheora"
3067 libtwolame_encoder_deps="libtwolame"
3068 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
3069 libvorbis_decoder_deps="libvorbis"
3070 libvorbis_encoder_deps="libvorbis libvorbisenc"
3071 libvorbis_encoder_select="audio_frame_queue"
3072 libvpx_vp8_decoder_deps="libvpx"
3073 libvpx_vp8_encoder_deps="libvpx"
3074 libvpx_vp9_decoder_deps="libvpx"
3075 libvpx_vp9_encoder_deps="libvpx"
3076 libwavpack_encoder_deps="libwavpack"
3077 libwavpack_encoder_select="audio_frame_queue"
3078 libwebp_encoder_deps="libwebp"
3079 libwebp_anim_encoder_deps="libwebp"
3080 libx262_encoder_deps="libx262"
3081 libx264_encoder_deps="libx264"
3082 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
3083 libx264rgb_encoder_select="libx264_encoder"
3084 libx265_encoder_deps="libx265"
3085 libxavs_encoder_deps="libxavs"
3086 libxvid_encoder_deps="libxvid"
3087 libzvbi_teletext_decoder_deps="libzvbi"
3088 videotoolbox_suggest="coreservices"
3089 videotoolbox_deps="corefoundation coremedia corevideo"
3090 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
3091
3092 # demuxers / muxers
3093 ac3_demuxer_select="ac3_parser"
3094 aiff_muxer_select="iso_media"
3095 asf_demuxer_select="riffdec"
3096 asf_o_demuxer_select="riffdec"
3097 asf_muxer_select="riffenc"
3098 asf_stream_muxer_select="asf_muxer"
3099 avi_demuxer_select="iso_media riffdec exif"
3100 avi_muxer_select="riffenc"
3101 caf_demuxer_select="iso_media riffdec"
3102 caf_muxer_select="iso_media"
3103 dash_muxer_select="mp4_muxer"
3104 dash_demuxer_deps="libxml2"
3105 dirac_demuxer_select="dirac_parser"
3106 dts_demuxer_select="dca_parser"
3107 dtshd_demuxer_select="dca_parser"
3108 dv_demuxer_select="dvprofile"
3109 dv_muxer_select="dvprofile"
3110 dxa_demuxer_select="riffdec"
3111 eac3_demuxer_select="ac3_parser"
3112 f4v_muxer_select="mov_muxer"
3113 fifo_muxer_deps="threads"
3114 flac_demuxer_select="flac_parser"
3115 hds_muxer_select="flv_muxer"
3116 hls_muxer_select="mpegts_muxer"
3117 hls_muxer_suggest="gcrypt openssl"
3118 image2_alias_pix_demuxer_select="image2_demuxer"
3119 image2_brender_pix_demuxer_select="image2_demuxer"
3120 ipod_muxer_select="mov_muxer"
3121 ismv_muxer_select="mov_muxer"
3122 matroska_audio_muxer_select="matroska_muxer"
3123 matroska_demuxer_select="iso_media riffdec"
3124 matroska_demuxer_suggest="bzlib lzo zlib"
3125 matroska_muxer_select="iso_media riffenc"
3126 mmf_muxer_select="riffenc"
3127 mov_demuxer_select="iso_media riffdec"
3128 mov_demuxer_suggest="zlib"
3129 mov_muxer_select="iso_media riffenc rtpenc_chain"
3130 mp3_demuxer_select="mpegaudio_parser"
3131 mp3_muxer_select="mpegaudioheader"
3132 mp4_muxer_select="mov_muxer"
3133 mpegts_demuxer_select="iso_media"
3134 mpegts_muxer_select="adts_muxer latm_muxer"
3135 mpegtsraw_demuxer_select="mpegts_demuxer"
3136 mxf_d10_muxer_select="mxf_muxer"
3137 mxf_opatom_muxer_select="mxf_muxer"
3138 nut_muxer_select="riffenc"
3139 nuv_demuxer_select="riffdec"
3140 oga_muxer_select="ogg_muxer"
3141 ogg_demuxer_select="dirac_parse"
3142 ogv_muxer_select="ogg_muxer"
3143 opus_muxer_select="ogg_muxer"
3144 psp_muxer_select="mov_muxer"
3145 rtp_demuxer_select="sdp_demuxer"
3146 rtp_muxer_select="golomb"
3147 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3148 rtsp_demuxer_select="http_protocol rtpdec"
3149 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3150 sap_demuxer_select="sdp_demuxer"
3151 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3152 sdp_demuxer_select="rtpdec"
3153 smoothstreaming_muxer_select="ismv_muxer"
3154 spdif_demuxer_select="adts_header"
3155 spdif_muxer_select="adts_header"
3156 spx_muxer_select="ogg_muxer"
3157 swf_demuxer_suggest="zlib"
3158 tak_demuxer_select="tak_parser"
3159 tg2_muxer_select="mov_muxer"
3160 tgp_muxer_select="mov_muxer"
3161 vobsub_demuxer_select="mpegps_demuxer"
3162 w64_demuxer_select="wav_demuxer"
3163 w64_muxer_select="wav_muxer"
3164 wav_demuxer_select="riffdec"
3165 wav_muxer_select="riffenc"
3166 webm_muxer_select="iso_media riffenc"
3167 webm_dash_manifest_demuxer_select="matroska_demuxer"
3168 wtv_demuxer_select="mpegts_demuxer riffdec"
3169 wtv_muxer_select="mpegts_muxer riffenc"
3170 xmv_demuxer_select="riffdec"
3171 xwma_demuxer_select="riffdec"
3172
3173 # indevs / outdevs
3174 android_camera_indev_deps="android camera2ndk mediandk pthreads"
3175 android_camera_indev_extralibs="-landroid -lcamera2ndk -lmediandk"
3176 alsa_indev_deps="alsa"
3177 alsa_outdev_deps="alsa"
3178 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3179 avfoundation_indev_suggest="coregraphics applicationservices"
3180 avfoundation_indev_extralibs="-framework Foundation"
3181 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3182 caca_outdev_deps="libcaca"
3183 decklink_deps_any="libdl LoadLibrary"
3184 decklink_indev_deps="decklink threads"
3185 decklink_indev_extralibs="-lstdc++"
3186 decklink_outdev_deps="decklink threads"
3187 decklink_outdev_extralibs="-lstdc++"
3188 libndi_newtek_indev_deps="libndi_newtek"
3189 libndi_newtek_indev_extralibs="-lndi"
3190 libndi_newtek_outdev_deps="libndi_newtek"
3191 libndi_newtek_outdev_extralibs="-lndi"
3192 dshow_indev_deps="IBaseFilter"
3193 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3194 fbdev_indev_deps="linux_fb_h"
3195 fbdev_outdev_deps="linux_fb_h"
3196 gdigrab_indev_deps="CreateDIBSection"
3197 gdigrab_indev_extralibs="-lgdi32"
3198 gdigrab_indev_select="bmp_decoder"
3199 iec61883_indev_deps="libiec61883"
3200 jack_indev_deps="libjack"
3201 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3202 kmsgrab_indev_deps="libdrm"
3203 lavfi_indev_deps="avfilter"
3204 libcdio_indev_deps="libcdio"
3205 libdc1394_indev_deps="libdc1394"
3206 openal_indev_deps="openal"
3207 opengl_outdev_deps="opengl"
3208 oss_indev_deps_any="sys_soundcard_h"
3209 oss_outdev_deps_any="sys_soundcard_h"
3210 pulse_indev_deps="libpulse"
3211 pulse_outdev_deps="libpulse"
3212 sdl2_outdev_deps="sdl2"
3213 sndio_indev_deps="sndio"
3214 sndio_outdev_deps="sndio"
3215 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3216 v4l2_indev_suggest="libv4l2"
3217 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3218 v4l2_outdev_suggest="libv4l2"
3219 vfwcap_indev_deps="vfw32 vfwcap_defines"
3220 xcbgrab_indev_deps="libxcb"
3221 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3222 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
3223 xv_outdev_extralibs="-lXv -lX11 -lXext"
3224
3225 # protocols
3226 async_protocol_deps="threads"
3227 bluray_protocol_deps="libbluray"
3228 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3229 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
3230 ffrtmpcrypt_protocol_select="tcp_protocol"
3231 ffrtmphttp_protocol_conflict="librtmp_protocol"
3232 ffrtmphttp_protocol_select="http_protocol"
3233 ftp_protocol_select="tcp_protocol"
3234 gopher_protocol_select="network"
3235 http_protocol_select="tcp_protocol"
3236 http_protocol_suggest="zlib"
3237 httpproxy_protocol_select="tcp_protocol"
3238 httpproxy_protocol_suggest="zlib"
3239 https_protocol_select="tls_protocol"
3240 https_protocol_suggest="zlib"
3241 icecast_protocol_select="http_protocol"
3242 librtmp_protocol_deps="librtmp"
3243 librtmpe_protocol_deps="librtmp"
3244 librtmps_protocol_deps="librtmp"
3245 librtmpt_protocol_deps="librtmp"
3246 librtmpte_protocol_deps="librtmp"
3247 libsmbclient_protocol_deps="libsmbclient gplv3"
3248 libssh_protocol_deps="libssh"
3249 libtls_conflict="openssl gnutls"
3250 mmsh_protocol_select="http_protocol"
3251 mmst_protocol_select="network"
3252 libsrt_protocol_deps="libsrt"
3253 libsrt_protocol_select="network"
3254 rtmp_protocol_conflict="librtmp_protocol"
3255 rtmp_protocol_select="tcp_protocol"
3256 rtmp_protocol_suggest="zlib"
3257 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3258 rtmpe_protocol_suggest="zlib"
3259 rtmps_protocol_conflict="librtmp_protocol"
3260 rtmps_protocol_select="tls_protocol"
3261 rtmps_protocol_suggest="zlib"
3262 rtmpt_protocol_select="ffrtmphttp_protocol"
3263 rtmpt_protocol_suggest="zlib"
3264 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3265 rtmpte_protocol_suggest="zlib"
3266 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3267 rtmpts_protocol_suggest="zlib"
3268 rtp_protocol_select="udp_protocol"
3269 schannel_conflict="openssl gnutls libtls"
3270 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3271 sctp_protocol_select="network"
3272 securetransport_conflict="openssl gnutls libtls"
3273 srtp_protocol_select="rtp_protocol srtp"
3274 tcp_protocol_select="network"
3275 tls_protocol_deps_any="gnutls openssl schannel securetransport libtls"
3276 tls_protocol_select="tcp_protocol"
3277 udp_protocol_select="network"
3278 udplite_protocol_select="network"
3279 unix_protocol_deps="sys_un_h"
3280 unix_protocol_select="network"
3281
3282 # filters
3283 afftfilt_filter_deps="avcodec"
3284 afftfilt_filter_select="fft"
3285 afir_filter_deps="avcodec"
3286 afir_filter_select="fft"
3287 amovie_filter_deps="avcodec avformat"
3288 aresample_filter_deps="swresample"
3289 ass_filter_deps="libass"
3290 atempo_filter_deps="avcodec"
3291 atempo_filter_select="rdft"
3292 avgblur_opencl_filter_deps="opencl"
3293 azmq_filter_deps="libzmq"
3294 blackframe_filter_deps="gpl"
3295 boxblur_filter_deps="gpl"
3296 bs2b_filter_deps="libbs2b"
3297 colormatrix_filter_deps="gpl"
3298 convolution_opencl_filter_deps="opencl"
3299 convolve_filter_deps="avcodec"
3300 convolve_filter_select="fft"
3301 coreimage_filter_deps="coreimage appkit"
3302 coreimage_filter_extralibs="-framework OpenGL"
3303 coreimagesrc_filter_deps="coreimage appkit"
3304 coreimagesrc_filter_extralibs="-framework OpenGL"
3305 cover_rect_filter_deps="avcodec avformat gpl"
3306 cropdetect_filter_deps="gpl"
3307 deconvolve_filter_deps="avcodec"
3308 deconvolve_filter_select="fft"
3309 deinterlace_qsv_filter_deps="libmfx"
3310 deinterlace_vaapi_filter_deps="vaapi"
3311 delogo_filter_deps="gpl"
3312 denoise_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3313 deshake_filter_select="pixelutils"
3314 drawtext_filter_deps="libfreetype"
3315 drawtext_filter_suggest="libfontconfig libfribidi"
3316 elbg_filter_deps="avcodec"
3317 eq_filter_deps="gpl"
3318 fftfilt_filter_deps="avcodec"
3319 fftfilt_filter_select="rdft"
3320 find_rect_filter_deps="avcodec avformat gpl"
3321 firequalizer_filter_deps="avcodec"
3322 firequalizer_filter_select="rdft"
3323 flite_filter_deps="libflite"
3324 framerate_filter_select="pixelutils"
3325 frei0r_filter_deps="frei0r libdl"
3326 frei0r_src_filter_deps="frei0r libdl"
3327 fspp_filter_deps="gpl"
3328 geq_filter_deps="gpl"
3329 histeq_filter_deps="gpl"
3330 hqdn3d_filter_deps="gpl"
3331 interlace_filter_deps="gpl"
3332 kerndeint_filter_deps="gpl"
3333 ladspa_filter_deps="ladspa libdl"
3334 lv2_filter_deps="lv2"
3335 mcdeint_filter_deps="avcodec gpl"
3336 movie_filter_deps="avcodec avformat"
3337 mpdecimate_filter_deps="gpl"
3338 mpdecimate_filter_select="pixelutils"
3339 mptestsrc_filter_deps="gpl"
3340 negate_filter_deps="lut_filter"
3341 nnedi_filter_deps="gpl"
3342 ocr_filter_deps="libtesseract"
3343 ocv_filter_deps="libopencv"
3344 openclsrc_filter_deps="opencl"
3345 overlay_opencl_filter_deps="opencl"
3346 overlay_qsv_filter_deps="libmfx"
3347 overlay_qsv_filter_select="qsvvpp"
3348 owdenoise_filter_deps="gpl"
3349 pan_filter_deps="swresample"
3350 perspective_filter_deps="gpl"
3351 phase_filter_deps="gpl"
3352 pp7_filter_deps="gpl"
3353 pp_filter_deps="gpl postproc"
3354 procamp_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3355 program_opencl_filter_deps="opencl"
3356 pullup_filter_deps="gpl"
3357 removelogo_filter_deps="avcodec avformat swscale"
3358 repeatfields_filter_deps="gpl"
3359 resample_filter_deps="avresample"
3360 rubberband_filter_deps="librubberband"
3361 sab_filter_deps="gpl swscale"
3362 scale2ref_filter_deps="swscale"
3363 scale_filter_deps="swscale"
3364 scale_qsv_filter_deps="libmfx"
3365 select_filter_select="pixelutils"
3366 sharpness_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3367 showcqt_filter_deps="avcodec avformat swscale"
3368 showcqt_filter_suggest="libfontconfig libfreetype"
3369 showcqt_filter_select="fft"
3370 showfreqs_filter_deps="avcodec"
3371 showfreqs_filter_select="fft"
3372 showspectrum_filter_deps="avcodec"
3373 showspectrum_filter_select="fft"
3374 showspectrumpic_filter_deps="avcodec"
3375 showspectrumpic_filter_select="fft"
3376 signature_filter_deps="gpl avcodec avformat"
3377 smartblur_filter_deps="gpl swscale"
3378 sofalizer_filter_deps="libmysofa avcodec"
3379 sofalizer_filter_select="fft"
3380 spectrumsynth_filter_deps="avcodec"
3381 spectrumsynth_filter_select="fft"
3382 spp_filter_deps="gpl avcodec"
3383 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3384 stereo3d_filter_deps="gpl"
3385 subtitles_filter_deps="avformat avcodec libass"
3386 super2xsai_filter_deps="gpl"
3387 pixfmts_super2xsai_test_deps="super2xsai_filter"
3388 tinterlace_filter_deps="gpl"
3389 tinterlace_merge_test_deps="tinterlace_filter"
3390 tinterlace_pad_test_deps="tinterlace_filter"
3391 tonemap_filter_deps="const_nan"
3392 unsharp_opencl_filter_deps="opencl"
3393 uspp_filter_deps="gpl avcodec"
3394 vaguedenoiser_filter_deps="gpl"
3395 vidstabdetect_filter_deps="libvidstab"
3396 vidstabtransform_filter_deps="libvidstab"
3397 libvmaf_filter_deps="libvmaf pthreads"
3398 zmq_filter_deps="libzmq"
3399 zoompan_filter_deps="swscale"
3400 zscale_filter_deps="libzimg const_nan"
3401 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3402 vpp_qsv_filter_deps="libmfx"
3403 vpp_qsv_filter_select="qsvvpp"
3404
3405 # examples
3406 avio_dir_cmd_deps="avformat avutil"
3407 avio_reading_deps="avformat avcodec avutil"
3408 decode_audio_example_deps="avcodec avutil"
3409 decode_video_example_deps="avcodec avutil"
3410 demuxing_decoding_example_deps="avcodec avformat avutil"
3411 encode_audio_example_deps="avcodec avutil"
3412 encode_video_example_deps="avcodec avutil"
3413 extract_mvs_example_deps="avcodec avformat avutil"
3414 filter_audio_example_deps="avfilter avutil"
3415 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3416 filtering_video_example_deps="avfilter avcodec avformat avutil"
3417 http_multiclient_example_deps="avformat avutil fork"
3418 hw_decode_example_deps="avcodec avformat avutil"
3419 metadata_example_deps="avformat avutil"
3420 muxing_example_deps="avcodec avformat avutil swscale"
3421 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3422 remuxing_example_deps="avcodec avformat avutil"
3423 resampling_audio_example_deps="avutil swresample"
3424 scaling_video_example_deps="avutil swscale"
3425 transcode_aac_example_deps="avcodec avformat swresample"
3426 transcoding_example_deps="avfilter avcodec avformat avutil"
3427 vaapi_encode_example_deps="avcodec avutil h264_vaapi_encoder"
3428 vaapi_transcode_example_deps="avcodec avformat avutil h264_vaapi_encoder"
3429
3430 # EXTRALIBS_LIST
3431 cpu_init_extralibs="pthreads_extralibs"
3432 cws2fws_extralibs="zlib_extralibs"
3433
3434 # libraries, in linking order
3435 avcodec_deps="avutil"
3436 avcodec_suggest="libm"
3437 avcodec_select="null_bsf"
3438 avdevice_deps="avformat avcodec avutil"
3439 avdevice_suggest="libm"
3440 avfilter_deps="avutil"
3441 avfilter_suggest="libm"
3442 avformat_deps="avcodec avutil"
3443 avformat_suggest="libm network zlib"
3444 avresample_deps="avutil"
3445 avresample_suggest="libm"
3446 avutil_suggest="clock_gettime ffnvcodec libm libdrm libmfx opencl user32 vaapi videotoolbox corefoundation corevideo coremedia wincrypt"
3447 postproc_deps="avutil gpl"
3448 postproc_suggest="libm"
3449 swresample_deps="avutil"
3450 swresample_suggest="libm libsoxr"
3451 swscale_deps="avutil"
3452 swscale_suggest="libm"
3453
3454 avcodec_extralibs="pthreads_extralibs iconv_extralibs"
3455 avfilter_extralibs="pthreads_extralibs"
3456 avutil_extralibs="d3d11va_extralibs nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3457
3458 # programs
3459 ffmpeg_deps="avcodec avfilter avformat swresample"
3460 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3461                null_filter
3462                trim_filter"
3463 ffmpeg_suggest="ole32 psapi shell32"
3464 ffplay_deps="avcodec avformat swscale swresample sdl2"
3465 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3466 ffplay_suggest="shell32"
3467 ffprobe_deps="avcodec avformat"
3468 ffprobe_suggest="shell32"
3469
3470 # documentation
3471 podpages_deps="perl"
3472 manpages_deps="perl pod2man"
3473 htmlpages_deps="perl"
3474 htmlpages_deps_any="makeinfo_html texi2html"
3475 txtpages_deps="perl makeinfo"
3476 doc_deps_any="manpages htmlpages podpages txtpages"
3477
3478 # default parameters
3479
3480 logfile="ffbuild/config.log"
3481
3482 # installation paths
3483 prefix_default="/usr/local"
3484 bindir_default='${prefix}/bin'
3485 datadir_default='${prefix}/share/ffmpeg'
3486 docdir_default='${prefix}/share/doc/ffmpeg'
3487 incdir_default='${prefix}/include'
3488 libdir_default='${prefix}/lib'
3489 mandir_default='${prefix}/share/man'
3490
3491 # toolchain
3492 ar_default="ar"
3493 cc_default="gcc"
3494 cxx_default="g++"
3495 host_cc_default="gcc"
3496 doxygen_default="doxygen"
3497 install="install"
3498 ln_s_default="ln -s -f"
3499 nm_default="nm -g"
3500 pkg_config_default=pkg-config
3501 ranlib_default="ranlib"
3502 strip_default="strip"
3503 version_script='--version-script'
3504 objformat="elf32"
3505 x86asmexe_default="nasm"
3506 windres_default="windres"
3507 nvcc_default="nvcc"
3508 nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
3509 striptype="direct"
3510
3511 # OS
3512 target_os_default=$(tolower $(uname -s))
3513 host_os=$target_os_default
3514
3515 # machine
3516 if test "$target_os_default" = aix; then
3517     arch_default=$(uname -p)
3518     strip_default="strip -X32_64"
3519 else
3520     arch_default=$(uname -m)
3521 fi
3522 cpu="generic"
3523 intrinsics="none"
3524
3525 # configurable options
3526 enable $PROGRAM_LIST
3527 enable $DOCUMENT_LIST
3528 enable $EXAMPLE_LIST
3529 enable $(filter_out avresample $LIBRARY_LIST)
3530 enable stripping
3531
3532 enable asm
3533 enable debug
3534 enable doc
3535 enable faan faandct faanidct
3536 enable optimizations
3537 enable runtime_cpudetect
3538 enable safe_bitstream_reader
3539 enable static
3540 enable swscale_alpha
3541 enable valgrind_backtrace
3542
3543 sws_max_filter_size_default=256
3544 set_default sws_max_filter_size
3545
3546 # internal components are enabled by default
3547 enable $EXTRALIBS_LIST
3548
3549 # Avoid external, non-system, libraries getting enabled by dependency resolution
3550 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3551
3552 # build settings
3553 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3554 LIBPREF="lib"
3555 LIBSUF=".a"
3556 FULLNAME='$(NAME)$(BUILDSUF)'
3557 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3558 SLIBPREF="lib"
3559 SLIBSUF=".so"
3560 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3561 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3562 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3563 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3564 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3565 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3566 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3567
3568 asflags_filter=echo
3569 cflags_filter=echo
3570 ldflags_filter=echo
3571
3572 AS_C='-c'
3573 AS_O='-o $@'
3574 CC_C='-c'
3575 CC_E='-E -o $@'
3576 CC_O='-o $@'
3577 CXX_C='-c'
3578 CXX_O='-o $@'
3579 OBJCC_C='-c'
3580 OBJCC_E='-E -o $@'
3581 OBJCC_O='-o $@'
3582 X86ASM_O='-o $@'
3583 LD_O='-o $@'
3584 LD_LIB='-l%'
3585 LD_PATH='-L'
3586 HOSTCC_C='-c'
3587 HOSTCC_E='-E -o $@'
3588 HOSTCC_O='-o $@'
3589 HOSTLD_O='-o $@'
3590 NVCC_C='-c'
3591 NVCC_O='-o $@'
3592
3593 host_extralibs='-lm'
3594 host_cflags_filter=echo
3595 host_ldflags_filter=echo
3596
3597 target_path='$(CURDIR)'
3598
3599 # since the object filename is not given with the -MM flag, the compiler
3600 # is only able to print the basename, and we must add the path ourselves
3601 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3602 DEPFLAGS='-MM'
3603
3604 mkdir -p ffbuild
3605
3606 # find source path
3607 if test -f configure; then
3608     source_path=.
3609 else
3610     source_path=$(cd $(dirname "$0"); pwd)
3611     case "$source_path" in
3612         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3613     esac
3614     test -e "$source_path/config.h" &&
3615         die "Out of tree builds are impossible with config.h in source dir."
3616 fi
3617
3618 for v in "$@"; do
3619     r=${v#*=}
3620     l=${v%"$r"}
3621     r=$(sh_quote "$r")
3622     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3623 done
3624
3625 find_things(){
3626     thing=$1
3627     pattern=$2
3628     file=$source_path/$3
3629     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3630 }
3631
3632 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3633
3634 find_things_extern(){
3635     thing=$1
3636     pattern=$2
3637     file=$source_path/$3
3638     out=${4:-$thing}
3639     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$out/p" "$file"
3640 }
3641
3642 OUTDEV_LIST=$(find_things_extern muxer AVOutputFormat libavdevice/alldevices.c outdev)
3643 INDEV_LIST=$(find_things_extern demuxer AVInputFormat libavdevice/alldevices.c indev)
3644 MUXER_LIST=$(find_things_extern muxer AVOutputFormat libavformat/allformats.c)
3645 DEMUXER_LIST=$(find_things_extern demuxer AVInputFormat libavformat/allformats.c)
3646 ENCODER_LIST=$(find_things_extern encoder AVCodec libavcodec/allcodecs.c)
3647 DECODER_LIST=$(find_things_extern decoder AVCodec libavcodec/allcodecs.c)
3648 CODEC_LIST="
3649     $ENCODER_LIST
3650     $DECODER_LIST
3651 "
3652 PARSER_LIST=$(find_things_extern parser AVCodecParser libavcodec/parser.c)
3653 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3654 HWACCEL_LIST=$(find_things_extern hwaccel AVHWAccel libavcodec/hwaccels.h)
3655 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3656
3657 AVCODEC_COMPONENTS_LIST="
3658     $BSF_LIST
3659     $DECODER_LIST
3660     $ENCODER_LIST
3661     $HWACCEL_LIST
3662     $PARSER_LIST
3663 "
3664
3665 AVDEVICE_COMPONENTS_LIST="
3666     $INDEV_LIST
3667     $OUTDEV_LIST
3668 "
3669
3670 AVFILTER_COMPONENTS_LIST="
3671     $FILTER_LIST
3672 "
3673
3674 AVFORMAT_COMPONENTS_LIST="
3675     $DEMUXER_LIST
3676     $MUXER_LIST
3677     $PROTOCOL_LIST
3678 "
3679
3680 ALL_COMPONENTS="
3681     $AVCODEC_COMPONENTS_LIST
3682     $AVDEVICE_COMPONENTS_LIST
3683     $AVFILTER_COMPONENTS_LIST
3684     $AVFORMAT_COMPONENTS_LIST
3685 "
3686
3687 for n in $COMPONENT_LIST; do
3688     v=$(toupper ${n%s})_LIST
3689     eval enable \$$v
3690     eval ${n}_if_any="\$$v"
3691 done
3692
3693 enable $ARCH_EXT_LIST
3694
3695 die_unknown(){
3696     echo "Unknown option \"$1\"."
3697     echo "See $0 --help for available options."
3698     exit 1
3699 }
3700
3701 print_in_columns() {
3702     cols=$(expr $ncols / 24)
3703     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3704 }
3705
3706 show_list() {
3707     suffix=_$1
3708     shift
3709     echo $* | sed s/$suffix//g | print_in_columns
3710     exit 0
3711 }
3712
3713 rand_list(){
3714     IFS=', '
3715     set -- $*
3716     unset IFS
3717     for thing; do
3718         comp=${thing%:*}
3719         prob=${thing#$comp}
3720         prob=${prob#:}
3721         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3722         echo "prob ${prob:-0.5}"
3723         printf '%s\n' $comp
3724     done
3725 }
3726
3727 do_random(){
3728     action=$1
3729     shift
3730     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3731     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3732 }
3733
3734 for opt do
3735     optval="${opt#*=}"
3736     case "$opt" in
3737         --extra-ldflags=*)
3738             add_ldflags $optval
3739         ;;
3740         --extra-ldexeflags=*)
3741             add_ldexeflags $optval
3742         ;;
3743         --extra-ldsoflags=*)
3744             add_ldsoflags $optval
3745         ;;
3746         --extra-ldlibflags=*)
3747             warn "The --extra-ldlibflags option is only provided for compatibility and will be\n"\
3748                  "removed in the future. Use --extra-ldsoflags instead."
3749             add_ldsoflags $optval
3750         ;;
3751         --extra-libs=*)
3752             add_extralibs $optval
3753         ;;
3754         --disable-devices)
3755             disable $INDEV_LIST $OUTDEV_LIST
3756         ;;
3757         --enable-debug=*)
3758             debuglevel="$optval"
3759         ;;
3760         --disable-programs)
3761             disable $PROGRAM_LIST
3762         ;;
3763         --disable-everything)
3764             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3765         ;;
3766         --disable-all)
3767             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3768             disable $LIBRARY_LIST $PROGRAM_LIST doc
3769             enable avutil
3770         ;;
3771         --enable-random|--disable-random)
3772             action=${opt%%-random}
3773             do_random ${action#--} $COMPONENT_LIST
3774         ;;
3775         --enable-random=*|--disable-random=*)
3776             action=${opt%%-random=*}
3777             do_random ${action#--} $optval
3778         ;;
3779         --enable-sdl)
3780             enable sdl2
3781         ;;
3782         --enable-*=*|--disable-*=*)
3783             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3784             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3785             eval list=\$$(toupper $thing)_LIST
3786             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3787             list=$(filter "$name" $list)
3788             [ "$list" = "" ] && warn "Option $opt did not match anything"
3789             $action $list
3790         ;;
3791         --enable-yasm|--disable-yasm)
3792             warn "The ${opt} option is only provided for compatibility and will be\n"\
3793                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3794             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3795         ;;
3796         --yasmexe=*)
3797             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3798                  "removed in the future. Use --x86asmexe instead."
3799             x86asmexe="$optval"
3800         ;;
3801         --enable-?*|--disable-?*)
3802             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3803             if is_in $option $COMPONENT_LIST; then
3804                 test $action = disable && action=unset
3805                 eval $action \$$(toupper ${option%s})_LIST
3806             elif is_in $option $CMDLINE_SELECT; then
3807                 $action $option
3808             else
3809                 die_unknown $opt
3810             fi
3811         ;;
3812         --list-*)
3813             NAME="${opt#--list-}"
3814             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3815             NAME=${NAME%s}
3816             eval show_list $NAME \$$(toupper $NAME)_LIST
3817         ;;
3818         --help|-h) show_help
3819         ;;
3820         --quiet|-q) quiet=yes
3821         ;;
3822         --fatal-warnings) enable fatal_warnings
3823         ;;
3824         --libfuzzer=*)
3825             libfuzzer_path="$optval"
3826         ;;
3827         *)
3828             optname="${opt%%=*}"
3829             optname="${optname#--}"
3830             optname=$(echo "$optname" | sed 's/-/_/g')
3831             if is_in $optname $CMDLINE_SET; then
3832                 eval $optname='$optval'
3833             elif is_in $optname $CMDLINE_APPEND; then
3834                 append $optname "$optval"
3835             else
3836                 die_unknown $opt
3837             fi
3838         ;;
3839     esac
3840 done
3841
3842 for e in $env; do
3843     eval "export $e"
3844 done
3845
3846 if disabled autodetect; then
3847
3848     # Unless iconv is explicitely disabled by the user, we still want to probe
3849     # for the iconv from the libc.
3850     disabled iconv || enable libc_iconv
3851
3852     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3853     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3854 fi
3855 # Mark specifically enabled, but normally autodetected libraries as requested.
3856 for lib in $AUTODETECT_LIBS; do
3857     enabled $lib && request $lib
3858 done
3859 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
3860 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3861 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3862
3863 disabled logging && logfile=/dev/null
3864
3865 # command line configuration sanity checks
3866
3867 # we need to build at least one lib type
3868 if ! enabled_any static shared; then
3869     cat <<EOF
3870 At least one library type must be built.
3871 Specify --enable-static to build the static libraries or --enable-shared to
3872 build the shared libraries as well. To only build the shared libraries specify
3873 --disable-static in addition to --enable-shared.
3874 EOF
3875     exit 1
3876 fi
3877
3878 die_license_disabled() {
3879     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3880 }
3881
3882 die_license_disabled_gpl() {
3883     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3884 }
3885
3886 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3887 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3888
3889 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3890 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3891
3892 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3893
3894 if enabled nonfree; then
3895     license="nonfree and unredistributable"
3896 elif enabled gplv3; then
3897     license="GPL version 3 or later"
3898 elif enabled lgplv3; then
3899     license="LGPL version 3 or later"
3900 elif enabled gpl; then
3901     license="GPL version 2 or later"
3902 else
3903     license="LGPL version 2.1 or later"
3904 fi
3905
3906 enabled_all gnutls openssl &&
3907     die "GnuTLS and OpenSSL must not be enabled at the same time."
3908
3909 # Disable all the library-specific components if the library itself
3910 # is disabled, see AVCODEC_LIST and following _LIST variables.
3911
3912 disable_components(){
3913     disabled ${1} && disable $(
3914         eval components="\$$(toupper ${1})_COMPONENTS"
3915         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3916     )
3917 }
3918
3919 map 'disable_components $v' $LIBRARY_LIST
3920
3921 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3922 set >> $logfile
3923
3924 test -n "$valgrind" && toolchain="valgrind-memcheck"
3925
3926 enabled ossfuzz && {
3927     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
3928     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
3929 }
3930
3931 case "$toolchain" in
3932     *-asan)
3933         cc_default="${toolchain%-asan}"
3934         add_cflags  -fsanitize=address
3935         add_ldflags -fsanitize=address
3936     ;;
3937     *-msan)
3938         cc_default="${toolchain%-msan}"
3939         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3940         add_ldflags -fsanitize=memory
3941     ;;
3942     *-tsan)
3943         cc_default="${toolchain%-tsan}"
3944         add_cflags  -fsanitize=thread -fPIE
3945         add_ldflags -fsanitize=thread -pie
3946         case "$toolchain" in
3947             gcc-tsan)
3948                 add_cflags  -fPIC
3949                 add_ldflags -fPIC
3950                 ;;
3951         esac
3952     ;;
3953     *-usan)
3954         cc_default="${toolchain%-usan}"
3955         add_cflags  -fsanitize=undefined
3956         add_ldflags -fsanitize=undefined
3957     ;;
3958     valgrind-*)
3959         target_exec_default="valgrind"
3960         case "$toolchain" in
3961             valgrind-massif)
3962                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3963                 ;;
3964             valgrind-memcheck)
3965                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3966                 ;;
3967         esac
3968     ;;
3969     msvc)
3970         # Check whether the current MSVC version needs the C99 converter.
3971         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3972         # support enough of C99 to build ffmpeg. Default to the new
3973         # behaviour if the regexp was unable to match anything, since this
3974         # successfully parses the version number of existing supported
3975         # versions that require the converter (MSVC 2010 and 2012).
3976         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3977         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3978             cc_default="cl"
3979             cxx_default="cl"
3980         else
3981             cc_default="c99wrap cl"
3982             cxx_default="c99wrap cl"
3983         fi
3984         ld_default="$source_path/compat/windows/mslink"
3985         nm_default="dumpbin -symbols"
3986         ar_default="lib"
3987         case "$arch" in
3988         aarch64|arm64)
3989             as_default="armasm64"
3990             ;;
3991         arm*)
3992             as_default="armasm"
3993             ;;
3994         esac
3995         target_os_default="win32"
3996         # Use a relative path for TMPDIR. This makes sure all the
3997         # ffconf temp files are written with a relative path, avoiding
3998         # issues with msys/win32 path conversion for MSVC parameters
3999         # such as -Fo<file> or -out:<file>.
4000         TMPDIR=.
4001     ;;
4002     icl)
4003         cc_default="icl"
4004         ld_default="xilink"
4005         nm_default="dumpbin -symbols"
4006         ar_default="xilib"
4007         target_os_default="win32"
4008         TMPDIR=.
4009     ;;
4010     gcov)
4011         add_cflags  -fprofile-arcs -ftest-coverage
4012         add_ldflags -fprofile-arcs -ftest-coverage
4013     ;;
4014     llvm-cov)
4015         add_cflags -fprofile-arcs -ftest-coverage
4016         add_ldflags --coverage
4017     ;;
4018     hardened)
4019         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
4020         add_cflags   -fno-strict-overflow -fstack-protector-all
4021         add_ldflags  -Wl,-z,relro -Wl,-z,now
4022         add_cflags   -fPIE
4023         add_ldexeflags -fPIE -pie
4024     ;;
4025     ?*)
4026         die "Unknown toolchain $toolchain"
4027     ;;
4028 esac
4029
4030 if test -n "$cross_prefix"; then
4031     test -n "$arch" && test -n "$target_os" ||
4032         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
4033     enable cross_compile
4034 fi
4035
4036 ar_default="${cross_prefix}${ar_default}"
4037 cc_default="${cross_prefix}${cc_default}"
4038 cxx_default="${cross_prefix}${cxx_default}"
4039 nm_default="${cross_prefix}${nm_default}"
4040 pkg_config_default="${cross_prefix}${pkg_config_default}"
4041 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
4042     ranlib_default="${cross_prefix}${ranlib_default} -D"
4043 else
4044     ranlib_default="${cross_prefix}${ranlib_default}"
4045 fi
4046 strip_default="${cross_prefix}${strip_default}"
4047 windres_default="${cross_prefix}${windres_default}"
4048
4049 sysinclude_default="${sysroot}/usr/include"
4050
4051 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
4052     target_exec target_os x86asmexe nvcc
4053 enabled cross_compile || host_cc_default=$cc
4054 set_default host_cc
4055
4056 pkg_config_fail_message=""
4057 if ! $pkg_config --version >/dev/null 2>&1; then
4058     warn "$pkg_config not found, library detection may fail."
4059     pkg_config=false
4060 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
4061     pkg_config_fail_message="
4062 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
4063 fi
4064
4065 if test $doxygen != $doxygen_default && \
4066   ! $doxygen --version >/dev/null 2>&1; then
4067     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
4068 fi
4069
4070 exesuf() {
4071     case $1 in
4072         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
4073     esac
4074 }
4075
4076 EXESUF=$(exesuf $target_os)
4077 HOSTEXESUF=$(exesuf $host_os)
4078
4079 # set temporary file name
4080 : ${TMPDIR:=$TEMPDIR}
4081 : ${TMPDIR:=$TMP}
4082 : ${TMPDIR:=/tmp}
4083
4084 if [ -n "$tempprefix" ] ; then
4085     mktemp(){
4086         tmpname="$tempprefix.${HOSTNAME}.${UID}"
4087         echo "$tmpname"
4088         mkdir "$tmpname"
4089     }
4090 elif ! test_cmd mktemp -u XXXXXX; then
4091     # simple replacement for missing mktemp
4092     # NOT SAFE FOR GENERAL USE
4093     mktemp(){
4094         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
4095         echo "$tmpname"
4096         mkdir "$tmpname"
4097     }
4098 fi
4099
4100 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
4101     die "Unable to create temporary directory in $TMPDIR."
4102
4103 tmpfile(){
4104     tmp="${FFTMPDIR}/test"$2
4105     (set -C; exec > $tmp) 2> /dev/null ||
4106         die "Unable to create temporary file in $FFTMPDIR."
4107     eval $1=$tmp
4108 }
4109
4110 trap 'rm -rf -- "$FFTMPDIR"' EXIT
4111 trap 'exit 2' INT
4112
4113 tmpfile TMPASM .asm
4114 tmpfile TMPC   .c
4115 tmpfile TMPCPP .cpp
4116 tmpfile TMPE   $EXESUF
4117 tmpfile TMPH   .h
4118 tmpfile TMPM   .m
4119 tmpfile TMPO   .o
4120 tmpfile TMPS   .S
4121 tmpfile TMPSH  .sh
4122 tmpfile TMPV   .ver
4123
4124 unset -f mktemp
4125
4126 chmod +x $TMPE
4127
4128 # make sure we can execute files in $TMPDIR
4129 cat > $TMPSH 2>> $logfile <<EOF
4130 #! /bin/sh
4131 EOF
4132 chmod +x $TMPSH >> $logfile 2>&1
4133 if ! $TMPSH >> $logfile 2>&1; then
4134     cat <<EOF
4135 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
4136 variable to another directory and make sure that it is not mounted noexec.
4137 EOF
4138     die "Sanity test failed."
4139 fi
4140
4141 armasm_flags(){
4142     for flag; do
4143         case $flag in
4144             # Filter out MSVC cl.exe options from cflags that shouldn't
4145             # be passed to gas-preprocessor
4146             -M[TD]*)                                            ;;
4147             *)                  echo $flag                      ;;
4148         esac
4149    done
4150 }
4151
4152 cparser_flags(){
4153     for flag; do
4154         case $flag in
4155             -Wno-switch)             echo -Wno-switch-enum ;;
4156             -Wno-format-zero-length) ;;
4157             -Wdisabled-optimization) ;;
4158             -Wno-pointer-sign)       echo -Wno-other ;;
4159             *)                       echo $flag ;;
4160         esac
4161     done
4162 }
4163
4164 msvc_common_flags(){
4165     for flag; do
4166         case $flag in
4167             # In addition to specifying certain flags under the compiler
4168             # specific filters, they must be specified here as well or else the
4169             # generic catch all at the bottom will print the original flag.
4170             -Wall)                ;;
4171             -Wextra)              ;;
4172             -std=c99)             ;;
4173             # Common flags
4174             -fomit-frame-pointer) ;;
4175             -g)                   echo -Z7 ;;
4176             -fno-math-errno)      ;;
4177             -fno-common)          ;;
4178             -fno-signed-zeros)    ;;
4179             -fPIC)                ;;
4180             -mthumb)              ;;
4181             -march=*)             ;;
4182             -lz)                  echo zlib.lib ;;
4183             -lx264)               echo libx264.lib ;;
4184             -lstdc++)             ;;
4185             -l*)                  echo ${flag#-l}.lib ;;
4186             -LARGEADDRESSAWARE)   echo $flag ;;
4187             -L*)                  echo -libpath:${flag#-L} ;;
4188             *)                    echo $flag ;;
4189         esac
4190     done
4191 }
4192
4193 msvc_flags(){
4194     msvc_common_flags "$@"
4195     for flag; do
4196         case $flag in
4197             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4198                                        -wd4554 ;;
4199             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4200                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4201                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4202                                        -wd4307 \
4203                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4204         esac
4205     done
4206 }
4207
4208 icl_flags(){
4209     msvc_common_flags "$@"
4210     for flag; do
4211         case $flag in
4212             # Despite what Intel's documentation says -Wall, which is supported
4213             # on Windows, does enable remarks so disable them here.
4214             -Wall)                echo $flag -Qdiag-disable:remark ;;
4215             -std=c99)             echo -Qstd=c99 ;;
4216             -flto)                echo -ipo ;;
4217         esac
4218     done
4219 }
4220
4221 icc_flags(){
4222     for flag; do
4223         case $flag in
4224             -flto)                echo -ipo ;;
4225             *)                    echo $flag ;;
4226         esac
4227     done
4228 }
4229
4230 suncc_flags(){
4231     for flag; do
4232         case $flag in
4233             -march=*|-mcpu=*)
4234                 case "${flag#*=}" in
4235                     native)                   echo -xtarget=native       ;;
4236                     v9|niagara)               echo -xarch=sparc          ;;
4237                     ultrasparc)               echo -xarch=sparcvis       ;;
4238                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4239                     i586|pentium)             echo -xchip=pentium        ;;
4240                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4241                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4242                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4243                     pentium4*)          echo -xtarget=pentium4           ;;
4244                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4245                     *-sse3)             echo -xarch=sse3                 ;;
4246                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4247                     bonnell)                   echo -xarch=ssse3         ;;
4248                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4249                     westmere)                  echo -xtarget=westmere    ;;
4250                     silvermont)                echo -xarch=sse4_2        ;;
4251                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4252                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4253                                                echo -xarch=avx           ;;
4254                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4255                     btver1)                    echo -xarch=amdsse4a      ;;
4256                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4257                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4258                     k8|opteron|athlon64|athlon-fx)
4259                                                echo -xarch=sse2a         ;;
4260                     athlon*)                   echo -xarch=pentium_proa  ;;
4261                 esac
4262                 ;;
4263             -std=c99)             echo -xc99              ;;
4264             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4265             -fPIC)                echo -KPIC -xcode=pic32 ;;
4266             -W*,*)                echo $flag              ;;
4267             -f*-*|-W*|-mimpure-text)                      ;;
4268             -shared)              echo -G                 ;;
4269             *)                    echo $flag              ;;
4270         esac
4271     done
4272 }
4273
4274 probe_cc(){
4275     pfx=$1
4276     _cc=$2
4277     first=$3
4278
4279     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4280     unset _ld_o _ldflags _ld_lib _ld_path
4281     unset _depflags _DEPCMD _DEPFLAGS
4282     _flags_filter=echo
4283
4284     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4285         true # no-op to avoid reading stdin in following checks
4286     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4287         _type=llvm_gcc
4288         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4289         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4290         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4291         _cflags_speed='-O3'
4292         _cflags_size='-Os'
4293     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4294         _type=gcc
4295         gcc_version=$($_cc --version | head -n1)
4296         gcc_basever=$($_cc -dumpversion)
4297         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4298         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4299         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4300         case $gcc_basever in
4301             2) ;;
4302             2.*) ;;
4303             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4304         esac
4305         if [ "$first" = true ]; then
4306             case $gcc_basever in
4307                 4.2*)
4308                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4309             esac
4310         fi
4311         _cflags_speed='-O3'
4312         _cflags_size='-Os'
4313     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4314         _type=icc
4315         _ident=$($_cc --version | head -n1)
4316         _depflags='-MMD'
4317         _cflags_speed='-O3'
4318         _cflags_size='-Os'
4319         _cflags_noopt='-O1'
4320         _flags_filter=icc_flags
4321     elif $_cc -v 2>&1 | grep -q xlc; then
4322         _type=xlc
4323         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4324         _cflags_speed='-O5'
4325         _cflags_size='-O5 -qcompact'
4326     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4327         test -d "$sysroot" || die "No valid sysroot specified."
4328         _type=armcc
4329         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4330         armcc_conf="$PWD/armcc.conf"
4331         $_cc --arm_linux_configure                 \
4332              --arm_linux_config_file="$armcc_conf" \
4333              --configure_sysroot="$sysroot"        \
4334              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4335              die "Error creating armcc configuration file."
4336         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4337         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4338         as_default="${cross_prefix}gcc"
4339         _depflags='-MMD'
4340         _cflags_speed='-O3'
4341         _cflags_size='-Os'
4342     elif $_cc -v 2>&1 | grep -q clang; then
4343         _type=clang
4344         _ident=$($_cc --version 2>/dev/null | head -n1)
4345         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4346         _cflags_speed='-O3'
4347         _cflags_size='-Oz'
4348     elif $_cc -V 2>&1 | grep -q Sun; then
4349         _type=suncc
4350         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4351         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4352         _DEPFLAGS='-xM1 -xc99'
4353         _ldflags='-std=c99'
4354         _cflags_speed='-O5'
4355         _cflags_size='-O5 -xspace'
4356         _flags_filter=suncc_flags
4357     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4358         _type=pathscale
4359         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4360         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4361         _cflags_speed='-O2'
4362         _cflags_size='-Os'
4363         _flags_filter='filter_out -Wdisabled-optimization'
4364     elif $_cc -v 2>&1 | grep -q Open64; then
4365         _type=open64
4366         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4367         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4368         _cflags_speed='-O2'
4369         _cflags_size='-Os'
4370         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4371     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4372         _type=armasm
4373         _ident=$($_cc | head -n1)
4374         # 4509: "This form of conditional instruction is deprecated"
4375         _flags="-nologo -ignore 4509"
4376         _flags_filter=armasm_flags
4377     elif $_cc 2>&1 | grep -q Intel; then
4378         _type=icl
4379         _ident=$($_cc 2>&1 | head -n1)
4380         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4381         # Not only is O3 broken on 13.x+ but it is slower on all previous
4382         # versions (tested) as well.
4383         _cflags_speed="-O2"
4384         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4385         if $_cc 2>&1 | grep -q Linker; then
4386             _ld_o='-out:$@'
4387         else
4388             _ld_o='-Fe$@'
4389         fi
4390         _cc_o='-Fo$@'
4391         _cc_e='-P'
4392         _flags_filter=icl_flags
4393         _ld_lib='lib%.a'
4394         _ld_path='-libpath:'
4395         # -Qdiag-error to make icl error when seeing certain unknown arguments
4396         _flags='-nologo -Qdiag-error:4044,10157'
4397         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4398         # with MSVC which enables it by default.
4399         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4400         disable stripping
4401     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4402         # lld can emulate multiple different linkers; in ms link.exe mode,
4403         # the -? parameter gives the help output which contains an identifyable
4404         # string, while it gives an error in other modes.
4405         _type=lld-link
4406         # The link.exe mode doesn't have a switch for getting the version,
4407         # but we can force it back to gnu mode and get the version from there.
4408         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4409         _ld_o='-out:$@'
4410         _flags_filter=msvc_flags
4411         _ld_lib='lib%.a'
4412         _ld_path='-libpath:'
4413     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4414         _type=msvc
4415         _ident=$($_cc 2>&1 | head -n1 | tr -d '\r')
4416         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4417         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4418         _cflags_speed="-O2"
4419         _cflags_size="-O1"
4420         _cflags_noopt="-O1"
4421         if $_cc -nologo- 2>&1 | grep -q Linker; then
4422             _ld_o='-out:$@'
4423         else
4424             _ld_o='-Fe$@'
4425         fi
4426         _cc_o='-Fo$@'
4427         _cc_e='-P -Fi$@'
4428         _flags_filter=msvc_flags
4429         _ld_lib='lib%.a'
4430         _ld_path='-libpath:'
4431         _flags='-nologo'
4432         disable stripping
4433     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4434         _type=cparser
4435         _ident=$($_cc --version | head -n1)
4436         _depflags='-MMD'
4437         _cflags_speed='-O4'
4438         _cflags_size='-O2'
4439         _flags_filter=cparser_flags
4440     fi
4441
4442     eval ${pfx}_type=\$_type
4443     eval ${pfx}_ident=\$_ident
4444 }
4445
4446 set_ccvars(){
4447     eval ${1}_C=\${_cc_c-\${${1}_C}}
4448     eval ${1}_E=\${_cc_e-\${${1}_E}}
4449     eval ${1}_O=\${_cc_o-\${${1}_O}}
4450
4451     if [ -n "$_depflags" ]; then
4452         eval ${1}_DEPFLAGS=\$_depflags
4453     else
4454         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4455         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4456         eval DEP${1}FLAGS=\$_flags
4457     fi
4458 }
4459
4460 probe_cc cc "$cc" "true"
4461 cflags_filter=$_flags_filter
4462 cflags_speed=$_cflags_speed
4463 cflags_size=$_cflags_size
4464 cflags_noopt=$_cflags_noopt
4465 add_cflags $_flags $_cflags
4466 cc_ldflags=$_ldflags
4467 set_ccvars CC
4468 set_ccvars CXX
4469
4470 probe_cc hostcc "$host_cc"
4471 host_cflags_filter=$_flags_filter
4472 host_cflags_speed=$_cflags_speed
4473 add_host_cflags  $_flags $_cflags
4474 set_ccvars HOSTCC
4475
4476 test -n "$cc_type" && enable $cc_type ||
4477     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4478
4479 : ${as_default:=$cc}
4480 : ${objcc_default:=$cc}
4481 : ${dep_cc_default:=$cc}
4482 : ${ld_default:=$cc}
4483 : ${host_ld_default:=$host_cc}
4484 set_default ar as objcc dep_cc ld ln_s host_ld windres
4485
4486 probe_cc as "$as"
4487 asflags_filter=$_flags_filter
4488 add_asflags $_flags $_cflags
4489 set_ccvars AS
4490
4491 probe_cc objcc "$objcc"
4492 objcflags_filter=$_flags_filter
4493 add_objcflags $_flags $_cflags
4494 set_ccvars OBJC
4495
4496 probe_cc ld "$ld"
4497 ldflags_filter=$_flags_filter
4498 add_ldflags $_flags $_ldflags
4499 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4500 LD_O=${_ld_o-$LD_O}
4501 LD_LIB=${_ld_lib-$LD_LIB}
4502 LD_PATH=${_ld_path-$LD_PATH}
4503
4504 probe_cc hostld "$host_ld"
4505 host_ldflags_filter=$_flags_filter
4506 add_host_ldflags $_flags $_ldflags
4507 HOSTLD_O=${_ld_o-$HOSTLD_O}
4508
4509 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4510     probe_cc depcc "$dep_cc"
4511     CCDEP=${_DEPCMD:-$DEPCMD}
4512     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4513     DEPCCFLAGS=$_flags
4514 fi
4515
4516 if $ar 2>&1 | grep -q Microsoft; then
4517     arflags="-nologo"
4518     ar_o='-out:$@'
4519 elif $ar 2>&1 | grep -q "\[D\] "; then
4520     arflags="rcD"
4521     ar_o='$@'
4522 else
4523     arflags="rc"
4524     ar_o='$@'
4525 fi
4526
4527 add_cflags $extra_cflags
4528 add_cxxflags $extra_cxxflags
4529 add_objcflags $extra_objcflags
4530 add_asflags $extra_cflags
4531
4532 if test -n "$sysroot"; then
4533     case "$cc_type" in
4534         gcc|llvm_gcc|clang)
4535             add_cppflags --sysroot="$sysroot"
4536             add_ldflags --sysroot="$sysroot"
4537         ;;
4538     esac
4539 fi
4540
4541 if test "$cpu" = host; then
4542     enabled cross_compile &&
4543         die "--cpu=host makes no sense when cross-compiling."
4544
4545     case "$cc_type" in
4546         gcc|llvm_gcc)
4547             check_native(){
4548                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4549                 sed -n "/cc1.*$1=/{
4550                             s/.*$1=\\([^ ]*\\).*/\\1/
4551                             p
4552                             q
4553                         }" $TMPE
4554             }
4555             cpu=$(check_native -march || check_native -mcpu)
4556         ;;
4557         clang)
4558             check_native(){
4559                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4560                 sed -n "/cc1.*-target-cpu /{
4561                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4562                             p
4563                             q
4564                         }" $TMPE
4565             }
4566             cpu=$(check_native -march)
4567         ;;
4568     esac
4569
4570     test "${cpu:-host}" = host &&
4571         die "--cpu=host not supported with compiler $cc"
4572 fi
4573
4574 # Deal with common $arch aliases
4575 case "$arch" in
4576     aarch64|arm64)
4577         arch="aarch64"
4578     ;;
4579     arm*|iPad*|iPhone*)
4580         arch="arm"
4581     ;;
4582     mips*|IP*)
4583         case "$arch" in
4584         *el)
4585             add_cppflags -EL
4586             add_ldflags -EL
4587         ;;
4588         *eb)
4589             add_cppflags -EB
4590             add_ldflags -EB
4591         ;;
4592         esac
4593         arch="mips"
4594     ;;
4595     parisc*|hppa*)
4596         arch="parisc"
4597     ;;
4598     "Power Macintosh"|ppc*|powerpc*)
4599         arch="ppc"
4600     ;;
4601     s390|s390x)
4602         arch="s390"
4603     ;;
4604     sh4|sh)
4605         arch="sh4"
4606     ;;
4607     sun4*|sparc*)
4608         arch="sparc"
4609     ;;
4610     tilegx|tile-gx)
4611         arch="tilegx"
4612     ;;
4613     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4614         arch="x86"
4615     ;;
4616 esac
4617
4618 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4619 enable $arch
4620
4621 # Add processor-specific flags
4622 if enabled aarch64; then
4623
4624     case $cpu in
4625         armv*)
4626             cpuflags="-march=$cpu"
4627         ;;
4628         *)
4629             cpuflags="-mcpu=$cpu"
4630         ;;
4631     esac
4632
4633 elif enabled alpha; then
4634
4635     cpuflags="-mcpu=$cpu"
4636
4637 elif enabled arm; then
4638
4639     check_arm_arch() {
4640         test_cpp_condition stddef.h \
4641             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4642             $cpuflags
4643     }
4644
4645     probe_arm_arch() {
4646         if   check_arm_arch 4;        then echo armv4
4647         elif check_arm_arch 4T;       then echo armv4t
4648         elif check_arm_arch 5;        then echo armv5
4649         elif check_arm_arch 5E;       then echo armv5e
4650         elif check_arm_arch 5T;       then echo armv5t
4651         elif check_arm_arch 5TE;      then echo armv5te
4652         elif check_arm_arch 5TEJ;     then echo armv5te
4653         elif check_arm_arch 6;        then echo armv6
4654         elif check_arm_arch 6J;       then echo armv6j
4655         elif check_arm_arch 6K;       then echo armv6k
4656         elif check_arm_arch 6Z;       then echo armv6z
4657         elif check_arm_arch 6KZ;      then echo armv6zk
4658         elif check_arm_arch 6ZK;      then echo armv6zk
4659         elif check_arm_arch 6T2;      then echo armv6t2
4660         elif check_arm_arch 7;        then echo armv7
4661         elif check_arm_arch 7A  7_A;  then echo armv7-a
4662         elif check_arm_arch 7S;       then echo armv7-a
4663         elif check_arm_arch 7R  7_R;  then echo armv7-r
4664         elif check_arm_arch 7M  7_M;  then echo armv7-m
4665         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4666         elif check_arm_arch 8A  8_A;  then echo armv8-a
4667         fi
4668     }
4669
4670     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4671
4672     case $cpu in
4673         armv*)
4674             cpuflags="-march=$cpu"
4675             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4676         ;;
4677         *)
4678             cpuflags="-mcpu=$cpu"
4679             case $cpu in
4680                 cortex-a*)                               subarch=armv7a  ;;
4681                 cortex-r*)                               subarch=armv7r  ;;
4682                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4683                 arm11*)                                  subarch=armv6   ;;
4684                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4685                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4686                 *)                             subarch=$(probe_arm_arch) ;;
4687             esac
4688         ;;
4689     esac
4690
4691     case "$subarch" in
4692         armv5t*)    enable fast_clz                ;;
4693         armv[6-8]*)
4694             enable fast_clz
4695             disabled fast_unaligned || enable fast_unaligned
4696             ;;
4697     esac
4698
4699 elif enabled avr32; then
4700
4701     case $cpu in
4702         ap7[02]0[0-2])
4703             subarch="avr32_ap"
4704             cpuflags="-mpart=$cpu"
4705         ;;
4706         ap)
4707             subarch="avr32_ap"
4708             cpuflags="-march=$cpu"
4709         ;;
4710         uc3[ab]*)
4711             subarch="avr32_uc"
4712             cpuflags="-mcpu=$cpu"
4713         ;;
4714         uc)
4715             subarch="avr32_uc"
4716             cpuflags="-march=$cpu"
4717         ;;
4718     esac
4719
4720 elif enabled bfin; then
4721
4722     cpuflags="-mcpu=$cpu"
4723
4724 elif enabled mips; then
4725
4726     cpuflags="-march=$cpu"
4727
4728     if [ "$cpu" != "generic" ]; then
4729         disable mips32r2
4730         disable mips32r5
4731         disable mips64r2
4732         disable mips32r6
4733         disable mips64r6
4734         disable loongson2
4735         disable loongson3
4736
4737         case $cpu in
4738             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4739                 enable mips32r2
4740                 disable msa
4741             ;;
4742             p5600|i6400|p6600)
4743                 disable mipsdsp
4744                 disable mipsdspr2
4745             ;;
4746             loongson*)
4747                 enable loongson2
4748                 enable loongson3
4749                 enable local_aligned
4750                 enable simd_align_16
4751                 enable fast_64bit
4752                 enable fast_clz
4753                 enable fast_cmov
4754                 enable fast_unaligned
4755                 disable aligned_stack
4756                 disable mipsfpu
4757                 disable mipsdsp
4758                 disable mipsdspr2
4759                 case $cpu in
4760                     loongson3*)
4761                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4762                     ;;
4763                     loongson2e)
4764                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4765                     ;;
4766                     loongson2f)
4767                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4768                     ;;
4769                 esac
4770             ;;
4771             *)
4772                 # Unknown CPU. Disable everything.
4773                 warn "unknown CPU. Disabling all MIPS optimizations."
4774                 disable mipsfpu
4775                 disable mipsdsp
4776                 disable mipsdspr2
4777                 disable msa
4778                 disable mmi
4779             ;;
4780         esac
4781
4782         case $cpu in
4783             24kc)
4784                 disable mipsfpu
4785                 disable mipsdsp
4786                 disable mipsdspr2
4787             ;;
4788             24kf*)
4789                 disable mipsdsp
4790                 disable mipsdspr2
4791             ;;
4792             24kec|34kc|1004kc)
4793                 disable mipsfpu
4794                 disable mipsdspr2
4795             ;;
4796             24kef*|34kf*|1004kf*)
4797                 disable mipsdspr2
4798             ;;
4799             74kc)
4800                 disable mipsfpu
4801             ;;
4802             p5600)
4803                 enable mips32r5
4804                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4805             ;;
4806             i6400)
4807                 enable mips64r6
4808                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4809             ;;
4810             p6600)
4811                 enable mips64r6
4812                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4813             ;;
4814         esac
4815     else
4816         # We do not disable anything. Is up to the user to disable the unwanted features.
4817         warn 'generic cpu selected'
4818     fi
4819
4820 elif enabled ppc; then
4821
4822     disable ldbrx
4823
4824     case $(tolower $cpu) in
4825         601|ppc601|powerpc601)
4826             cpuflags="-mcpu=601"
4827             disable altivec
4828         ;;
4829         603*|ppc603*|powerpc603*)
4830             cpuflags="-mcpu=603"
4831             disable altivec
4832         ;;
4833         604*|ppc604*|powerpc604*)
4834             cpuflags="-mcpu=604"
4835             disable altivec
4836         ;;
4837         g3|75*|ppc75*|powerpc75*)
4838             cpuflags="-mcpu=750"
4839             disable altivec
4840         ;;
4841         g4|745*|ppc745*|powerpc745*)
4842             cpuflags="-mcpu=7450"
4843             disable vsx
4844         ;;
4845         74*|ppc74*|powerpc74*)
4846             cpuflags="-mcpu=7400"
4847             disable vsx
4848         ;;
4849         g5|970|ppc970|powerpc970)
4850             cpuflags="-mcpu=970"
4851             disable vsx
4852         ;;
4853         power[3-6]*)
4854             cpuflags="-mcpu=$cpu"
4855             disable vsx
4856         ;;
4857         power[7-8]*)
4858             cpuflags="-mcpu=$cpu"
4859         ;;
4860         cell)
4861             cpuflags="-mcpu=cell"
4862             enable ldbrx
4863             disable vsx
4864         ;;
4865         e500mc)
4866             cpuflags="-mcpu=e500mc"
4867             disable altivec
4868         ;;
4869         e500v2)
4870             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4871             disable altivec
4872             disable dcbzl
4873         ;;
4874         e500)
4875             cpuflags="-mcpu=8540 -mhard-float"
4876             disable altivec
4877             disable dcbzl
4878         ;;
4879     esac
4880
4881 elif enabled sparc; then
4882
4883     case $cpu in
4884         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4885             cpuflags="-mcpu=$cpu"
4886         ;;
4887         ultrasparc*|niagara[234])
4888             cpuflags="-mcpu=$cpu"
4889         ;;
4890     esac
4891
4892 elif enabled x86; then
4893
4894     case $cpu in
4895         i[345]86|pentium)
4896             cpuflags="-march=$cpu"
4897             disable i686
4898             disable mmx
4899         ;;
4900         # targets that do NOT support nopl and conditional mov (cmov)
4901         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4902             cpuflags="-march=$cpu"
4903             disable i686
4904         ;;
4905         # targets that do support nopl and conditional mov (cmov)
4906         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4907         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4908         |amdfam10|barcelona|b[dt]ver*|znver*)
4909             cpuflags="-march=$cpu"
4910             enable i686
4911             enable fast_cmov
4912         ;;
4913         # targets that do support conditional mov but on which it's slow
4914         pentium4|pentium4m|prescott|nocona)
4915             cpuflags="-march=$cpu"
4916             enable i686
4917             disable fast_cmov
4918         ;;
4919     esac
4920
4921 fi
4922
4923 if [ "$cpu" != generic ]; then
4924     add_cflags  $cpuflags
4925     add_asflags $cpuflags
4926     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4927 fi
4928
4929 # compiler sanity check
4930 test_exec <<EOF
4931 int main(void){ return 0; }
4932 EOF
4933 if test "$?" != 0; then
4934     echo "$cc is unable to create an executable file."
4935     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4936         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4937         echo "Only do this if you know what cross compiling means."
4938     fi
4939     die "C compiler test failed."
4940 fi
4941
4942 add_cppflags -D_ISOC99_SOURCE
4943 add_cxxflags -D__STDC_CONSTANT_MACROS
4944 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
4945
4946 # some compilers silently accept -std=c11, so we also need to check that the
4947 # version macro is defined properly
4948 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
4949     add_cflags -std=c11 ||
4950     check_cflags -std=c99
4951
4952 check_cppflags -D_FILE_OFFSET_BITS=64
4953 check_cppflags -D_LARGEFILE_SOURCE
4954
4955 add_host_cppflags -D_ISOC99_SOURCE
4956 check_host_cflags -std=c99
4957 check_host_cflags -Wall
4958 check_host_cflags $host_cflags_speed
4959
4960 check_64bit(){
4961     arch32=$1
4962     arch64=$2
4963     expr=${3:-'sizeof(void *) > 4'}
4964     test_code cc "" "int test[2*($expr) - 1]" &&
4965         subarch=$arch64 || subarch=$arch32
4966     enable $subarch
4967 }
4968
4969 case "$arch" in
4970     aarch64|alpha|ia64)
4971         enabled shared && enable_weak pic
4972     ;;
4973     mips)
4974         check_64bit mips mips64 '_MIPS_SIM > 1'
4975         enabled shared && enable_weak pic
4976     ;;
4977     parisc)
4978         check_64bit parisc parisc64
4979         enabled shared && enable_weak pic
4980     ;;
4981     ppc)
4982         check_64bit ppc ppc64
4983         enabled shared && enable_weak pic
4984     ;;
4985     s390)
4986         check_64bit s390 s390x
4987         enabled shared && enable_weak pic
4988     ;;
4989     sparc)
4990         check_64bit sparc sparc64
4991         enabled shared && enable_weak pic
4992     ;;
4993     x86)
4994         check_64bit x86_32 x86_64
4995         # Treat x32 as x64 for now. Note it also needs pic if shared
4996         test "$subarch" = "x86_32" && test_cpp_condition stddef.h 'defined(__x86_64__)' &&
4997             subarch=x86_64 && enable x86_64 && disable x86_32
4998         if enabled x86_64; then
4999             enabled shared && enable_weak pic
5000             objformat=elf64
5001         fi
5002     ;;
5003 esac
5004
5005 # OS specific
5006 case $target_os in
5007     aix)
5008         SHFLAGS=-shared
5009         add_cppflags '-I\$(SRC_PATH)/compat/aix'
5010         enabled shared && add_ldflags -Wl,-brtl
5011         arflags='-Xany -r -c'
5012         ;;
5013     android)
5014         disable symver
5015         enable section_data_rel_ro
5016         SLIB_INSTALL_NAME='$(SLIBNAME)'
5017         SLIB_INSTALL_LINKS=
5018         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
5019         ;;
5020     haiku)
5021         prefix_default="/boot/common"
5022         network_extralibs="-lnetwork"
5023         host_extralibs=
5024         ;;
5025     sunos)
5026         SHFLAGS='-shared -Wl,-h,$$(@F)'
5027         enabled x86 && append SHFLAGS -mimpure-text
5028         network_extralibs="-lsocket -lnsl"
5029         add_cppflags -D__EXTENSIONS__
5030         # When using suncc to build, the Solaris linker will mark
5031         # an executable with each instruction set encountered by
5032         # the Solaris assembler.  As our libraries contain their own
5033         # guards for processor-specific code, instead suppress
5034         # generation of the HWCAPS ELF section on Solaris x86 only.
5035         enabled_all suncc x86 &&
5036             echo "hwcap_1 = OVERRIDE;" > mapfile &&
5037             add_ldflags -Wl,-M,mapfile
5038         nm_default='nm -P -g'
5039         version_script='-M'
5040         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
5041         ;;
5042     netbsd)
5043         disable symver
5044         oss_indev_extralibs="-lossaudio"
5045         oss_outdev_extralibs="-lossaudio"
5046         enabled gcc || check_ldflags -Wl,-zmuldefs
5047         ;;
5048     openbsd|bitrig)
5049         disable symver
5050         SHFLAGS='-shared'
5051         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
5052         SLIB_INSTALL_LINKS=
5053         oss_indev_extralibs="-lossaudio"
5054         oss_outdev_extralibs="-lossaudio"
5055         ;;
5056     dragonfly)
5057         disable symver
5058         ;;
5059     freebsd)
5060         ;;
5061     bsd/os)
5062         add_extralibs -lpoll -lgnugetopt
5063         strip="strip -d"
5064         ;;
5065     darwin)
5066         enabled ppc && add_asflags -force_cpusubtype_ALL
5067         install_name_dir_default='$(SHLIBDIR)'
5068         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
5069         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
5070         strip="${strip} -x"
5071         add_ldflags -Wl,-dynamic,-search_paths_first
5072         check_cflags -Werror=partial-availability
5073         SLIBSUF=".dylib"
5074         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
5075         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
5076         enabled x86_64 && objformat="macho64" || objformat="macho32"
5077         enabled_any pic shared x86_64 ||
5078             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
5079         check_header dispatch/dispatch.h &&
5080             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
5081         if test -n "$sysroot"; then
5082             is_in -isysroot $cc $CPPFLAGS $CFLAGS || check_cppflags -isysroot $sysroot
5083             is_in -isysroot $ld $LDFLAGS          || check_ldflags  -isysroot $sysroot
5084         fi
5085         version_script='-exported_symbols_list'
5086         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
5087         ;;
5088     msys*)
5089         die "Native MSYS builds are discouraged, please use the MINGW environment."
5090         ;;
5091     mingw32*|mingw64*)
5092         target_os=mingw32
5093         LIBTARGET=i386
5094         if enabled x86_64; then
5095             LIBTARGET="i386:x86-64"
5096         elif enabled arm; then
5097             LIBTARGET="arm"
5098         elif enabled aarch64; then
5099             LIBTARGET="arm64"
5100         fi
5101         if enabled shared; then
5102             # Cannot build both shared and static libs when using dllimport.
5103             disable static
5104         fi
5105         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5106         enabled x86_32 && check_ldflags -Wl,--large-address-aware
5107         shlibdir_default="$bindir_default"
5108         SLIBPREF=""
5109         SLIBSUF=".dll"
5110         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5111         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5112         if test_cmd lib.exe -list; then
5113             SLIB_EXTRA_CMD=-'lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5114             if enabled x86_64; then
5115                 LIBTARGET=x64
5116             fi
5117         else
5118             SLIB_EXTRA_CMD=-'$(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
5119         fi
5120         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5121         SLIB_INSTALL_LINKS=
5122         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5123         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5124         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" AR="$(AR_CMD)" NM="$(NM_CMD)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5125         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--disable-auto-image-base $$(@:$(SLIBSUF)=.def)'
5126         enabled x86_64 && objformat="win64" || objformat="win32"
5127         dlltool="${cross_prefix}dlltool"
5128         ranlib=:
5129         enable dos_paths
5130         check_ldflags -Wl,--nxcompat,--dynamicbase
5131         # Lets work around some stupidity in binutils.
5132         # ld will strip relocations from executables even though we need them
5133         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
5134         # however ld then forgets what the entry point should be (oops) so we
5135         # have to manually (re)set it.
5136         if enabled x86_32; then
5137             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
5138         elif enabled x86_64; then
5139             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
5140             check_ldflags -Wl,--high-entropy-va # binutils 2.25
5141             # Set image base >4GB for extra entropy with HEASLR
5142             add_ldexeflags -Wl,--image-base,0x140000000
5143             append SHFLAGS -Wl,--image-base,0x180000000
5144         fi
5145         ;;
5146     win32|win64)
5147         disable symver
5148         if enabled shared; then
5149             # Link to the import library instead of the normal static library
5150             # for shared libs.
5151             LD_LIB='%.lib'
5152             # Cannot build both shared and static libs with MSVC or icl.
5153             disable static
5154         fi
5155         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
5156         shlibdir_default="$bindir_default"
5157         SLIBPREF=""
5158         SLIBSUF=".dll"
5159         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5160         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5161         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5162         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5163         SLIB_INSTALL_LINKS=
5164         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5165         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5166         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5167         enabled x86_64 && objformat="win64" || objformat="win32"
5168         ranlib=:
5169         enable dos_paths
5170         ;;
5171     cygwin*)
5172         target_os=cygwin
5173         shlibdir_default="$bindir_default"
5174         SLIBPREF="cyg"
5175         SLIBSUF=".dll"
5176         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5177         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5178         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5179         SLIB_INSTALL_LINKS=
5180         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
5181         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
5182         enabled x86_64 && objformat="win64" || objformat="win32"
5183         enable dos_paths
5184         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5185         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5186         ;;
5187     *-dos|freedos|opendos)
5188         network_extralibs="-lsocket"
5189         objformat="coff"
5190         enable dos_paths
5191         add_cppflags -U__STRICT_ANSI__
5192         ;;
5193     linux)
5194         enable section_data_rel_ro
5195         enabled_any arm aarch64 && enable_weak linux_perf
5196         ;;
5197     irix*)
5198         target_os=irix
5199         ranlib="echo ignoring ranlib"
5200         ;;
5201     os/2*)
5202         strip="lxlite -CS"
5203         striptype=""
5204         objformat="aout"
5205         add_cppflags -D_GNU_SOURCE
5206         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
5207         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
5208         LIBSUF="_s.a"
5209         SLIBPREF=""
5210         SLIBSUF=".dll"
5211         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5212         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
5213         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
5214             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
5215             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
5216             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
5217             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
5218         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
5219             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
5220         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5221         SLIB_INSTALL_LINKS=
5222         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
5223         enable dos_paths
5224         enable_weak os2threads
5225         ;;
5226     gnu/kfreebsd)
5227         add_cppflags -D_BSD_SOURCE
5228         ;;
5229     gnu)
5230         ;;
5231     qnx)
5232         add_cppflags -D_QNX_SOURCE
5233         network_extralibs="-lsocket"
5234         ;;
5235     symbian)
5236         SLIBSUF=".dll"
5237         enable dos_paths
5238         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
5239         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
5240         add_ldflags -Wl,--target1-abs,--no-undefined \
5241                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
5242                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
5243         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
5244                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
5245                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
5246         ;;
5247     minix)
5248         ;;
5249     none)
5250         ;;
5251     *)
5252         die "Unknown OS '$target_os'."
5253         ;;
5254 esac
5255
5256 # test if creating links works
5257 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5258 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5259 mkdir "$link_dest"
5260 $ln_s "$link_dest" "$link_name"
5261 touch "$link_dest/test_file"
5262 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5263     # create link to source path
5264     [ -e src ] && rm src
5265     $ln_s "$source_path" src
5266     source_link=src
5267 else
5268     # creating directory links doesn't work
5269     # fall back to using the full source path
5270     source_link="$source_path"
5271 fi
5272 # cleanup
5273 rm -r "$link_dest"
5274 rm -r "$link_name"
5275
5276 # determine libc flavour
5277
5278 probe_libc(){
5279     pfx=$1
5280     pfx_no_=${pfx%_}
5281     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5282     if test_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5283         eval ${pfx}libc_type=uclibc
5284         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5285     elif test_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5286         eval ${pfx}libc_type=glibc
5287         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5288     # MinGW headers can be installed on Cygwin, so check for newlib first.
5289     elif test_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5290         eval ${pfx}libc_type=newlib
5291         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
5292     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5293     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5294         eval ${pfx}libc_type=mingw64
5295         if test_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5296             add_compat msvcrt/snprintf.o
5297             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5298         fi
5299         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5300         eval test \$${pfx_no_}cc_type = "gcc" &&
5301             add_${pfx}cppflags -D__printf__=__gnu_printf__
5302         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5303             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5304     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5305          test_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5306         eval ${pfx}libc_type=mingw32
5307         test_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5308             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5309             die "ERROR: MinGW32 runtime version must be >= 3.15."
5310         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5311         test_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
5312             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5313         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5314             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5315         eval test \$${pfx_no_}cc_type = "gcc" &&
5316             add_${pfx}cppflags -D__printf__=__gnu_printf__
5317     elif test_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5318         eval ${pfx}libc_type=msvcrt
5319         if test_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5320             if [ "$pfx" = host_ ]; then
5321                 add_host_cppflags -Dsnprintf=_snprintf
5322             else
5323                 add_compat strtod.o strtod=avpriv_strtod
5324                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5325                                              _snprintf=avpriv_snprintf  \
5326                                              vsnprintf=avpriv_vsnprintf
5327             fi
5328         fi
5329         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5330         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5331         # 0x601 by default unless something else is set by the user.
5332         # This can easily lead to us detecting functions only present
5333         # in such new versions and producing binaries requiring windows 7.0.
5334         # Therefore explicitly set the default to Vista unless the user has
5335         # set something else on the command line.
5336         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5337         # family. For these cases, configure is free to use any functions
5338         # found in the SDK headers by default. (Alternatively, we could force
5339         # _WIN32_WINNT to 0x0602 in that case.)
5340         test_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5341             { test_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0600; }
5342 #ifdef WINAPI_FAMILY
5343 #include <winapifamily.h>
5344 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5345 #error not desktop
5346 #endif
5347 #endif
5348 EOF
5349         if [ "$pfx" = "" ]; then
5350             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5351             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5352         fi
5353     elif test_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5354         eval ${pfx}libc_type=klibc
5355     elif test_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5356         eval ${pfx}libc_type=bionic
5357     elif test_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5358         eval ${pfx}libc_type=solaris
5359         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5360     fi
5361     test_${pfx}cc <<EOF
5362 #include <time.h>
5363 void *v = localtime_r;
5364 EOF
5365 test "$?" != 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
5366 #include <time.h>
5367 void *v = localtime_r;
5368 EOF
5369
5370     eval test -n "\${${pfx}libc_type}" && enable ${pfx}libc_${libc_type}
5371 }
5372
5373 probe_libc
5374 probe_libc host_
5375
5376 # hacks for compiler/libc/os combinations
5377
5378 case $libc_type in
5379     bionic)
5380         add_compat strtod.o strtod=avpriv_strtod
5381         ;;
5382 esac
5383
5384 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5385     add_cppflags '-I\$(SRC_PATH)/compat/float'
5386
5387 test_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5388
5389 set_default libdir
5390 : ${shlibdir_default:="$libdir"}
5391 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5392
5393 set_default $PATHS_LIST
5394 set_default nm
5395
5396 disabled optimizations || enabled ossfuzz || check_cflags -fomit-frame-pointer
5397
5398 enable_weak_pic() {
5399     disabled pic && return
5400     enable pic
5401     add_cppflags -DPIC
5402     case "$target_os" in
5403     mingw*|cygwin*|win*)
5404         ;;
5405     *)
5406         add_cflags -fPIC
5407         add_asflags -fPIC
5408         ;;
5409     esac
5410 }
5411
5412 enabled pic && enable_weak_pic
5413
5414 test_cc <<EOF || die "Symbol mangling check failed."
5415 int ff_extern;
5416 EOF
5417 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5418 extern_prefix=${sym%%ff_extern*}
5419
5420 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
5421
5422 for restrict_keyword in restrict __restrict__ __restrict ""; do
5423     test_code cc "" "char * $restrict_keyword p" && break
5424 done
5425
5426 check_cc pragma_deprecated "" '_Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"")'
5427
5428 # The global variable ensures the bits appear unchanged in the object file.
5429 test_cc <<EOF || die "endian test failed"
5430 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5431 EOF
5432 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5433
5434 check_cc const_nan math.h "struct { double d; } static const bar[] = { { NAN } }"
5435
5436 if ! enabled ppc64 || enabled bigendian; then
5437     disable vsx
5438 fi
5439
5440 check_gas() {
5441     log "check_gas using '$as' as AS"
5442     # :vararg is used on aarch64, arm and ppc altivec
5443     check_as vararg "
5444 .macro m n, y:vararg=0
5445 \n: .int \y
5446 .endm
5447 m x" || return 1
5448     # .altmacro is only used in arm asm
5449     ! enabled arm || check_as gnu_as ".altmacro"
5450 }
5451
5452 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5453     nogas=:
5454     enabled_any arm aarch64 && nogas=die
5455     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5456     as_noop=-v
5457
5458     case $as_type in
5459         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5460         gcc)  gaspp_as_type=gas ;;
5461         *)    gaspp_as_type=$as_type ;;
5462     esac
5463
5464     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5465
5466     test "${as#*gas-preprocessor.pl}" != "$as" ||
5467     test_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5468         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5469
5470     if ! check_gas ; then
5471         as=${gas:=$as}
5472         check_gas || \
5473             $nogas "GNU assembler not found, install/update gas-preprocessor"
5474     fi
5475
5476     check_as as_func ".func test
5477                       .endfunc"
5478 fi
5479
5480 check_inline_asm inline_asm_labels '"1:\n"'
5481
5482 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5483
5484 if enabled aarch64; then
5485     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5486     # internal assembler in clang 3.3 does not support this instruction
5487     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5488     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5489
5490     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5491
5492 elif enabled alpha; then
5493
5494     check_cflags -mieee
5495
5496 elif enabled arm; then
5497
5498     enabled msvc && check_cpp_condition thumb stddef.h "defined _M_ARMT"
5499     test_cpp_condition stddef.h "defined __thumb__" && test_cc <<EOF && enable_weak thumb
5500 float func(float a, float b){ return a+b; }
5501 EOF
5502     enabled thumb && check_cflags -mthumb || check_cflags -marm
5503
5504     if check_cpp_condition vfp_args stddef.h "defined __ARM_PCS_VFP"; then
5505         :
5506     elif check_cpp_condition vfp_args stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5507         :
5508     elif ! test_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5509         case "${cross_prefix:-$cc}" in
5510             *hardfloat*) enable vfp_args; fpabi=vfp ;;
5511             *) check_ld "cc" vfp_args <<EOF && fpabi=vfp || fpabi=soft ;;
5512 __asm__ (".eabi_attribute 28, 1");
5513 int main(void) { return 0; }
5514 EOF
5515         esac
5516         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5517     fi
5518
5519     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5520     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5521     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5522     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5523     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5524     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5525     enabled setend  && check_insn setend  'setend be'
5526
5527     [ $target_os = linux ] || [ $target_os = android ] ||
5528         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5529             $ARCH_EXT_LIST_ARM
5530
5531     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5532
5533     check_as as_arch_directive ".arch armv7-a"
5534     check_as as_dn_directive   "ra .dn d0.i16"
5535     check_as as_fpu_directive  ".fpu neon"
5536
5537     # llvm's integrated assembler supports .object_arch from llvm 3.5
5538     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
5539         check_as as_object_arch ".object_arch armv4"
5540
5541     # MS armasm fails to assemble our PIC constructs
5542     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5543
5544 elif enabled mips; then
5545
5546     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5547     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5548     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5549
5550     # Enable minimum ISA based on selected options
5551     if enabled mips64; then
5552         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5553         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5554         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5555     else
5556         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5557         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5558         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5559         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5560     fi
5561
5562     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5563     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5564     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_header msa.h || disable msa
5565     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5566     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5567
5568     if enabled bigendian && enabled msa; then
5569         disable msa
5570     fi
5571
5572 elif enabled parisc; then
5573
5574     if enabled gcc; then
5575         case $($cc -dumpversion) in
5576             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5577         esac
5578     fi
5579
5580 elif enabled ppc; then
5581
5582     enable local_aligned
5583
5584     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5585     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5586     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5587     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5588
5589     if enabled altivec; then
5590         check_cflags -maltivec -mabi=altivec
5591
5592         # check if our compiler supports Motorola AltiVec C API
5593         check_cc altivec altivec.h "vector signed int v1 = (vector signed int) { 0 };
5594                                     vector signed int v2 = (vector signed int) { 1 };
5595                                     v1 = vec_add(v1, v2);"
5596
5597         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5598     fi
5599
5600     if enabled vsx; then
5601         check_cflags -mvsx &&
5602         check_cc vsx altivec.h "int v[4] = { 0 };
5603                                 vector signed int v1 = vec_vsx_ld(0, v);"
5604     fi
5605
5606     if enabled power8; then
5607         check_cpp_condition power8 "altivec.h" "defined(_ARCH_PWR8)"
5608     fi
5609
5610 elif enabled x86; then
5611
5612     check_builtin rdtsc    intrin.h   "__rdtsc()"
5613     check_builtin mm_empty mmintrin.h "_mm_empty()"
5614
5615     enable local_aligned
5616
5617     # check whether EBP is available on x86
5618     # As 'i' is stored on the stack, this program will crash
5619     # if the base pointer is used to access it because the
5620     # base pointer is cleared in the inline assembly code.
5621     check_exec_crash <<EOF && enable ebp_available
5622 volatile int i=0;
5623 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5624 return i;
5625 EOF
5626
5627     # check whether EBX is available on x86
5628     check_inline_asm ebx_available '""::"b"(0)' &&
5629         check_inline_asm ebx_available '"":::"%ebx"'
5630
5631     # check whether xmm clobbers are supported
5632     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5633
5634     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5635         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5636
5637     # check whether binutils is new enough to compile SSSE3/MMXEXT
5638     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5639     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5640
5641     probe_x86asm(){
5642         x86asmexe_probe=$1
5643         if test_cmd $x86asmexe_probe -v; then
5644             x86asmexe=$x86asmexe_probe
5645             x86asm_type=nasm
5646             x86asm_debug="-g -F dwarf"
5647             X86ASMDEP=
5648             X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
5649         elif test_cmd $x86asmexe_probe --version; then
5650             x86asmexe=$x86asmexe_probe
5651             x86asm_type=yasm
5652             x86asm_debug="-g dwarf2"
5653             X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
5654             X86ASM_DEPFLAGS=
5655         fi
5656         check_x86asm x86asm "movbe ecx, [5]"
5657     }
5658
5659     if ! disabled_any asm mmx x86asm; then
5660         disable x86asm
5661         for program in $x86asmexe nasm yasm; do
5662             probe_x86asm $program && break
5663         done
5664         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
5665         X86ASMFLAGS="-f $objformat"
5666         enabled pic               && append X86ASMFLAGS "-DPIC"
5667         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
5668         case "$objformat" in
5669             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
5670         esac
5671
5672         check_x86asm avx512_external "vmovdqa32 [eax]{k1}{z}, zmm0"
5673         check_x86asm avx2_external   "vextracti128 xmm0, ymm0, 0"
5674         check_x86asm xop_external    "vpmacsdd xmm0, xmm1, xmm2, xmm3"
5675         check_x86asm fma4_external   "vfmaddps ymm0, ymm1, ymm2, ymm3"
5676         check_x86asm cpunop          "CPU amdnop"
5677     fi
5678
5679     case "$cpu" in
5680         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5681             disable fast_clz
5682         ;;
5683     esac
5684
5685 fi
5686
5687 check_cc intrinsics_neon arm_neon.h "int16x8_t test = vdupq_n_s16(0)"
5688
5689 check_ldflags -Wl,--as-needed
5690 check_ldflags -Wl,-z,noexecstack
5691
5692 if ! disabled network; then
5693     check_func getaddrinfo $network_extralibs
5694     check_func inet_aton $network_extralibs
5695
5696     check_type netdb.h "struct addrinfo"
5697     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5698     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5699     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5700     check_type poll.h "struct pollfd"
5701     check_type netinet/sctp.h "struct sctp_event_subscribe"
5702     check_struct "sys/socket.h" "struct msghdr" msg_flags
5703     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5704     check_type netinet/in.h "struct sockaddr_in6"
5705     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5706     check_type "sys/types.h sys/socket.h" socklen_t
5707
5708     # Prefer arpa/inet.h over winsock2
5709     if check_header arpa/inet.h ; then
5710         check_func closesocket
5711     elif check_header winsock2.h ; then
5712         check_func_headers winsock2.h closesocket -lws2 &&
5713             network_extralibs="-lws2" ||
5714         { check_func_headers winsock2.h closesocket -lws2_32 &&
5715             network_extralibs="-lws2_32"; } || disable winsock2_h network
5716         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5717
5718         check_type ws2tcpip.h socklen_t
5719         check_type ws2tcpip.h "struct addrinfo"
5720         check_type ws2tcpip.h "struct group_source_req"
5721         check_type ws2tcpip.h "struct ip_mreq_source"
5722         check_type ws2tcpip.h "struct ipv6_mreq"
5723         check_type winsock2.h "struct pollfd"
5724         check_struct winsock2.h "struct sockaddr" sa_len
5725         check_type ws2tcpip.h "struct sockaddr_in6"
5726         check_type ws2tcpip.h "struct sockaddr_storage"
5727     else
5728         disable network
5729     fi
5730 fi
5731
5732 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5733 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5734 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5735 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5736 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5737 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5738 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5739
5740 case "$custom_allocator" in
5741     jemalloc)
5742         # jemalloc by default does not use a prefix
5743         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5744     ;;
5745     tcmalloc)
5746         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
5747         malloc_prefix=tc_
5748     ;;
5749 esac
5750
5751 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5752 check_func  ${malloc_prefix}memalign            && enable memalign
5753 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5754
5755 check_func  access
5756 check_func_headers stdlib.h arc4random
5757 check_lib   clock_gettime time.h clock_gettime || check_lib clock_gettime time.h clock_gettime -lrt
5758 check_func  fcntl
5759 check_func  fork
5760 check_func  gethrtime
5761 check_func  getopt
5762 check_func  getrusage
5763 check_func  gettimeofday
5764 check_func  isatty
5765 check_func  mkstemp
5766 check_func  mmap
5767 check_func  mprotect
5768 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5769 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
5770 check_func  sched_getaffinity
5771 check_func  setrlimit
5772 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5773 check_func  strerror_r
5774 check_func  sysconf
5775 check_func  sysctl
5776 check_func  usleep
5777
5778 check_func_headers conio.h kbhit
5779 check_func_headers io.h setmode
5780 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5781 check_func_headers mach/mach_time.h mach_absolute_time
5782 check_func_headers stdlib.h getenv
5783 check_func_headers sys/stat.h lstat
5784
5785 check_func_headers windows.h GetProcessAffinityMask
5786 check_func_headers windows.h GetProcessTimes
5787 check_func_headers windows.h GetSystemTimeAsFileTime
5788 check_func_headers windows.h LoadLibrary
5789 check_func_headers windows.h MapViewOfFile
5790 check_func_headers windows.h PeekNamedPipe
5791 check_func_headers windows.h SetConsoleTextAttribute
5792 check_func_headers windows.h SetConsoleCtrlHandler
5793 check_func_headers windows.h Sleep
5794 check_func_headers windows.h VirtualAlloc
5795 check_func_headers glob.h glob
5796 enabled xlib &&
5797     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5798
5799 check_header direct.h
5800 check_header dirent.h
5801 check_header dxgidebug.h
5802 check_header dxva.h
5803 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5804 check_header io.h
5805 check_header libcrystalhd/libcrystalhd_if.h
5806 check_header malloc.h
5807 check_header net/udplite.h
5808 check_header poll.h
5809 check_header sys/param.h
5810 check_header sys/resource.h
5811 check_header sys/select.h
5812 check_header sys/time.h
5813 check_header sys/un.h
5814 check_header termios.h
5815 check_header unistd.h
5816 check_header valgrind/valgrind.h
5817 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5818 check_header windows.h
5819 check_header X11/extensions/XvMClib.h
5820 check_header asm/types.h
5821
5822 # it seems there are versions of clang in some distros that try to use the
5823 # gcc headers, which explodes for stdatomic
5824 # so we also check that atomics actually work here
5825 check_builtin stdatomic stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0)"
5826
5827 check_lib advapi32 "windows.h"            RegCloseKey          -ladvapi32
5828 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
5829 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
5830 check_lib wincrypt "windows.h wincrypt.h" CryptGenRandom       -ladvapi32
5831 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
5832
5833 check_lib android android/native_window.h ANativeWindow_acquire -landroid
5834 check_lib mediandk "stdint.h media/NdkImage.h" AImage_delete -lmediandk
5835 check_lib camera2ndk "stdbool.h stdint.h camera/NdkCameraManager.h" ACameraManager_create -lcamera2ndk
5836
5837 enabled appkit       && check_apple_framework AppKit
5838 enabled audiotoolbox && check_apple_framework AudioToolbox
5839 enabled avfoundation && check_apple_framework AVFoundation
5840 enabled coreimage    && check_apple_framework CoreImage
5841 enabled videotoolbox && check_apple_framework VideoToolbox
5842
5843 check_apple_framework CoreFoundation
5844 check_apple_framework CoreMedia
5845 check_apple_framework CoreVideo
5846
5847 enabled avfoundation && {
5848     disable coregraphics applicationservices
5849     check_lib coregraphics        CoreGraphics/CoreGraphics.h               CGGetActiveDisplayList "-framework CoreGraphics" ||
5850     check_lib applicationservices ApplicationServices/ApplicationServices.h CGGetActiveDisplayList "-framework ApplicationServices"; }
5851
5852 enabled videotoolbox && {
5853     check_lib coreservices CoreServices/CoreServices.h UTGetOSTypeFromString "-framework CoreServices"
5854     check_func_headers CoreMedia/CMFormatDescription.h kCMVideoCodecType_HEVC "-framework CoreMedia"
5855 }
5856
5857 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5858
5859 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5860 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5861 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5862 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5863 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5864
5865 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
5866 check_type "va/va.h va/va_dec_vp8.h" "VAPictureParameterBufferVP8"
5867 check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
5868 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
5869 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
5870 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
5871 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
5872 check_type "va/va.h va/va_enc_mpeg2.h" "VAEncPictureParameterBufferMPEG2"
5873 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
5874 check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
5875
5876 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5877
5878 if ! disabled ffnvcodec; then
5879     check_pkg_config ffnvcodec "ffnvcodec >= 8.0.14.1" \
5880         "ffnvcodec/nvEncodeAPI.h ffnvcodec/dynlink_cuda.h ffnvcodec/dynlink_cuviddec.h ffnvcodec/dynlink_nvcuvid.h" ""
5881 fi
5882
5883 check_cpp_condition winrt windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)"
5884
5885 if ! disabled w32threads && ! enabled pthreads; then
5886     check_func_headers "windows.h process.h" _beginthreadex &&
5887         check_type "windows.h" CONDITION_VARIABLE &&
5888         enable w32threads || disable w32threads
5889     if ! enabled w32threads && enabled winrt; then
5890         check_func_headers "windows.h" CreateThread &&
5891             enable w32threads || disable w32threads
5892     fi
5893 fi
5894
5895 # check for some common methods of building with pthread support
5896 # do this before the optional library checks as some of them require pthreads
5897 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5898     if check_lib pthreads pthread.h pthread_join   -pthread &&
5899        check_lib pthreads pthread.h pthread_create -pthread; then
5900         add_cflags -pthread
5901     elif check_lib pthreads pthread.h pthread_join   -pthreads &&
5902          check_lib pthreads pthread.h pthread_create -pthreads; then
5903         add_cflags -pthreads
5904     elif check_lib pthreads pthread.h pthread_join   -ldl -pthread &&
5905          check_lib pthreads pthread.h pthread_create -ldl -pthread; then
5906         add_cflags -ldl -pthread
5907     elif check_lib pthreads pthread.h pthread_join   -lpthreadGC2 &&
5908          check_lib pthreads pthread.h pthread_create -lpthreadGC2; then
5909         :
5910     elif check_lib pthreads pthread.h pthread_join   -lpthread &&
5911          check_lib pthreads pthread.h pthread_create -lpthread; then
5912         :
5913     elif check_func pthread_join && check_func pthread_create; then
5914         enable pthreads
5915     fi
5916     check_cc pthreads "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER"
5917
5918     if enabled pthreads; then
5919         check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
5920         check_func pthread_cancel $pthreads_extralibs
5921     fi
5922 fi
5923
5924 enabled  zlib && check_lib zlib   zlib.h      zlibVersion    -lz
5925 enabled bzlib && check_lib bzlib bzlib.h BZ2_bzlibVersion    -lbz2
5926 enabled  lzma && check_lib lzma   lzma.h lzma_version_number -llzma
5927
5928 # On some systems dynamic loading requires no extra linker flags
5929 check_lib libdl dlfcn.h "dlopen dlsym" || check_lib libdl dlfcn.h "dlopen dlsym" -ldl
5930
5931 check_lib libm math.h sin -lm
5932
5933 atan2f_args=2
5934 copysign_args=2
5935 hypot_args=2
5936 ldexpf_args=2
5937 powf_args=2
5938
5939 for func in $MATH_FUNCS; do
5940     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
5941 done
5942
5943 for func in $COMPLEX_FUNCS; do
5944     eval check_complexfunc $func \${${func}_args:-1}
5945 done
5946
5947 # these are off by default, so fail if requested and not available
5948 enabled cuda_sdk          && require cuda_sdk cuda.h cuCtxCreate -lcuda
5949 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
5950 enabled decklink          && { require_header DeckLinkAPI.h &&
5951                                { test_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a060100" || die "ERROR: Decklink API version must be >= 10.6.1."; } }
5952 enabled libndi_newtek     && require_header Processing.NDI.Lib.h
5953 enabled frei0r            && require_header frei0r.h
5954 enabled gmp               && require gmp gmp.h mpz_export -lgmp
5955 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init
5956 enabled jni               && { [ $target_os = "android" ] && check_header jni.h && enabled pthreads || die "ERROR: jni not found"; }
5957 enabled ladspa            && require_header ladspa.h
5958 enabled libaom            && require_pkg_config libaom "aom >= 0.1.0" aom/aom_codec.h aom_codec_version
5959 enabled lv2               && require_pkg_config lv2 lilv-0 "lilv-0/lilv/lilv.h" lilv_world_new
5960 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5961 enabled libass            && require_pkg_config libass libass ass/ass.h ass_library_init
5962 enabled libbluray         && require_pkg_config libbluray libbluray libbluray/bluray.h bd_open
5963 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
5964 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5965                              { check_lib libcelt celt/celt.h celt_decoder_create_custom -lcelt0 ||
5966                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5967 enabled libcaca           && require_pkg_config libcaca caca caca.h caca_create_canvas
5968 enabled libcodec2         && require libcodec2 codec2/codec2.h codec2_create -lcodec2
5969 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
5970 enabled libdrm            && require_pkg_config libdrm libdrm xf86drm.h drmGetVersion
5971 enabled libfdk_aac        && { check_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
5972                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
5973                                  warn "using libfdk without pkg-config"; } }
5974 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"
5975 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_extralibs
5976 enabled fontconfig        && enable libfontconfig
5977 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
5978 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
5979 enabled libfribidi        && require_pkg_config libfribidi fribidi fribidi.h fribidi_version_info
5980 enabled libgme            && { check_pkg_config libgme libgme gme/gme.h gme_new_emu ||
5981                                require libgme gme/gme.h gme_new_emu -lgme -lstdc++; }
5982 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
5983                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
5984                                done || die "ERROR: libgsm not found"; }
5985 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc $pthreads_extralibs
5986 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
5987 # While it may appear that require is being used as a pkg-config
5988 # fallback for libmfx, it is actually being used to detect a different
5989 # installation route altogether.  If libmfx is installed via the Intel
5990 # Media SDK or Intel Media Server Studio, these don't come with
5991 # pkg-config support.  Instead, users should make sure that the build
5992 # can find the libraries and headers through other means.
5993 enabled libmfx            && { check_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit ||
5994                                { require libmfx "mfx/mfxvideo.h" MFXInit "-llibmfx $advapi32_extralibs" && warn "using libmfx without pkg-config"; } }
5995 enabled libmodplug        && require_pkg_config libmodplug libmodplug libmodplug/modplug.h ModPlug_Load
5996 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame $libm_extralibs
5997 enabled libmysofa         && require libmysofa "mysofa.h" mysofa_load -lmysofa $zlib_extralibs
5998 enabled libnpp            && { check_lib libnpp npp.h nppGetLibVersion -lnppig -lnppicc -lnppc ||
5999                                check_lib libnpp npp.h nppGetLibVersion -lnppi -lnppc ||
6000                                die "ERROR: libnpp not found"; }
6001 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
6002 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
6003 enabled libopencv         && { check_header opencv2/core/core_c.h &&
6004                                { check_pkg_config libopencv opencv opencv2/core/core_c.h cvCreateImageHeader ||
6005                                  require libopencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
6006                                require_pkg_config libopencv opencv opencv/cxcore.h cvCreateImageHeader; }
6007 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
6008 enabled libopenjpeg       && { check_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version ||
6009                                { require_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } }
6010 enabled libopenmpt        && require_pkg_config libopenmpt "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create -lstdc++ && append libopenmpt_extralibs "-lstdc++"
6011 enabled libopus           && {
6012     enabled libopus_decoder && {
6013         require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
6014     }
6015     enabled libopus_encoder && {
6016         require_pkg_config libopus opus opus_multistream.h opus_multistream_surround_encoder_create
6017     }
6018 }
6019 enabled libpulse          && require_pkg_config libpulse libpulse pulse/pulseaudio.h pa_context_new
6020 enabled librsvg           && require_pkg_config librsvg librsvg-2.0 librsvg-2.0/librsvg/rsvg.h rsvg_handle_render_cairo
6021 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
6022 enabled librubberband     && require_pkg_config librubberband "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new -lstdc++ && append librubberband_extralibs "-lstdc++"
6023 enabled libshine          && require_pkg_config libshine shine shine/layer3.h shine_encode_buffer
6024 enabled libsmbclient      && { check_pkg_config libsmbclient smbclient libsmbclient.h smbc_init ||
6025                                require libsmbclient libsmbclient.h smbc_init -lsmbclient; }
6026 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy -lstdc++
6027 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
6028 enabled libssh            && require_pkg_config libssh libssh libssh/sftp.h sftp_init
6029 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init
6030 enabled libsrt            && require_pkg_config libsrt "srt >= 1.2.0" srt/srt.h srt_socket
6031 enabled libtesseract      && require_pkg_config libtesseract tesseract tesseract/capi.h TessBaseAPICreate
6032 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
6033 enabled libtls            && require_pkg_config libtls libtls tls.h tls_configure
6034 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
6035                              { check_lib libtwolame twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
6036                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
6037 enabled libv4l2           && require_pkg_config libv4l2 libv4l2 libv4l2.h v4l2_ioctl
6038 enabled libvidstab        && require_pkg_config libvidstab "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
6039 enabled libvmaf           && require_pkg_config libvmaf "libvmaf >= 0.6.2" libvmaf.h compute_vmaf
6040 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
6041 enabled libvorbis         && require_pkg_config libvorbis vorbis vorbis/codec.h vorbis_info_init &&
6042                              require_pkg_config libvorbisenc vorbisenc vorbis/vorbisenc.h vorbis_encode_init
6043
6044 enabled libvpx            && {
6045     enabled libvpx_vp8_decoder && {
6046         check_pkg_config libvpx_vp8_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
6047             check_lib libvpx_vp8_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_dec_init_ver VPX_IMG_FMT_HIGHBITDEPTH" -lvpx ||
6048                 die "ERROR: libvpx decoder version must be >=1.4.0";
6049     }
6050     enabled libvpx_vp8_encoder && {
6051         check_pkg_config libvpx_vp8_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
6052             check_lib libvpx_vp8_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VPX_IMG_FMT_HIGHBITDEPTH" -lvpx ||
6053                 die "ERROR: libvpx encoder version must be >=1.4.0";
6054     }
6055     enabled libvpx_vp9_decoder && {
6056         check_pkg_config libvpx_vp9_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
6057             check_lib libvpx_vp9_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx VPX_IMG_FMT_HIGHBITDEPTH" "-lvpx $libm_extralibs"
6058     }
6059     enabled libvpx_vp9_encoder && {
6060         check_pkg_config libvpx_vp9_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
6061             check_lib libvpx_vp9_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VPX_IMG_FMT_HIGHBITDEPTH" "-lvpx $libm_extralibs"
6062     }
6063     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
6064         die "libvpx enabled but no supported decoders found"
6065     fi
6066 }
6067
6068 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
6069 enabled libwebp           && {
6070     enabled libwebp_encoder      && require_pkg_config libwebp "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
6071     enabled libwebp_anim_encoder && check_pkg_config libwebp_anim_encoder "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit; }
6072 enabled libx264           && { check_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode ||
6073                                { require libx264 "stdint.h x264.h" x264_encoder_encode "-lx264 $pthreads_extralibs $libm_extralibs" &&
6074                                  warn "using libx264 without pkg-config"; } } &&
6075                              require_cpp_condition x264.h "X264_BUILD >= 118" &&
6076                              check_cpp_condition libx262 x264.h "X264_MPEG2"
6077 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
6078                              require_cpp_condition x265.h "X265_BUILD >= 68"
6079 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode "-lxavs $pthreads_extralibs $libm_extralibs"
6080 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
6081 enabled libzimg           && require_pkg_config libzimg "zimg >= 2.7.0" zimg.h zimg_get_api_version
6082 enabled libzmq            && require_pkg_config libzmq libzmq zmq.h zmq_ctx_new
6083 enabled libzvbi           && require_pkg_config libzvbi zvbi-0.2 libzvbi.h vbi_decoder_new &&
6084                              { test_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
6085                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
6086 enabled libxml2           && require_pkg_config libxml2 libxml-2.0 libxml2/libxml/xmlversion.h xmlCheckVersion
6087 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
6088 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
6089                                { ! enabled cross_compile &&
6090                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
6091                                  add_ldflags -L/opt/vc/lib/ &&
6092                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
6093                                die "ERROR: mmal not found" &&
6094                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
6095 enabled openal            && { { for al_extralibs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
6096                                check_lib openal 'AL/al.h' alGetError "${al_extralibs}" && break; done } ||
6097                                die "ERROR: openal not found"; } &&
6098                              { test_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
6099                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
6100 enabled opencl            && { check_lib opencl OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
6101                                check_lib opencl CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
6102                                die "ERROR: opencl not found"; } &&
6103                              { test_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
6104                                test_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
6105                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
6106 enabled opengl            && { check_lib opengl GL/glx.h glXGetProcAddress "-lGL" ||
6107                                check_lib opengl windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
6108                                check_lib opengl OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
6109                                check_lib opengl ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
6110                                die "ERROR: opengl not found."
6111                              }
6112 enabled omx               && require_header OMX_Core.h
6113 enabled omx_rpi           && { check_header OMX_Core.h ||
6114                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_header OMX_Core.h ; } ||
6115                                die "ERROR: OpenMAX IL headers not found"; } && enable omx
6116 enabled openssl           && { check_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
6117                                check_pkg_config openssl openssl openssl/ssl.h SSL_library_init ||
6118                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
6119                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
6120                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
6121                                die "ERROR: openssl not found"; }
6122 enabled rkmpp             && { require_pkg_config rkmpp rockchip_mpp  rockchip/rk_mpi.h mpp_create &&
6123                                require_pkg_config rockchip_mpp "rockchip_mpp >= 1.3.7" rockchip/rk_mpi.h mpp_create &&
6124                                { enabled libdrm ||
6125                                  die "ERROR: rkmpp requires --enable-libdrm"; }
6126                              }
6127
6128 if enabled gcrypt; then
6129     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
6130     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
6131         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
6132         gcrypt_extralibs=$("${GCRYPT_CONFIG}" --libs)
6133         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_extralibs ||
6134             die "ERROR: gcrypt not found"
6135         add_cflags $gcrypt_cflags
6136     else
6137         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
6138     fi
6139 fi
6140
6141 if enabled sdl2; then
6142     SDL2_CONFIG="${cross_prefix}sdl2-config"
6143     test_pkg_config sdl2 "sdl2 >= 2.0.1 sdl2 < 2.1.0" SDL_events.h SDL_PollEvent
6144     if disabled sdl2 && "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
6145         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
6146         sdl2_extralibs=$("${SDL2_CONFIG}" --libs)
6147         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
6148         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
6149         check_func_headers SDL_events.h SDL_PollEvent $sdl2_extralibs $sdl2_cflags &&
6150             enable sdl2
6151     fi
6152     if test $target_os = "mingw32"; then
6153         sdl2_extralibs=$(filter_out '-mwindows' $sdl2_extralibs)
6154     fi
6155 fi
6156
6157 if enabled decklink; then
6158     case $target_os in
6159         mingw32*|mingw64*|win32|win64)
6160             decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
6161             decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
6162             ;;
6163     esac
6164 fi
6165
6166 enabled securetransport &&
6167     check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
6168     check_lib securetransport "Security/SecureTransport.h Security/Security.h" "SSLCreateContext" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" ||
6169         disable securetransport
6170
6171 enabled securetransport &&
6172     check_func SecItemImport "-Wl,-framework,CoreFoundation -Wl,-framework,Security"
6173
6174 enabled schannel &&
6175     check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
6176     test_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" &&
6177     schannel_extralibs="-lsecur32" ||
6178         disable schannel
6179
6180 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
6181 enabled makeinfo \
6182     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
6183     && enable makeinfo_html || disable makeinfo_html
6184 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
6185 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
6186 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
6187 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
6188
6189 # check V4L2 codecs available in the API
6190 check_header linux/fb.h
6191 check_header linux/videodev2.h
6192 test_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6193 check_cc v4l2_m2m linux/videodev2.h "int i = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_VIDEO_M2M | V4L2_BUF_FLAG_LAST;"
6194 check_cc vc1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VC1_ANNEX_G;"
6195 check_cc mpeg1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG1;"
6196 check_cc mpeg2_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG2;"
6197 check_cc mpeg4_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG4;"
6198 check_cc hevc_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_HEVC;"
6199 check_cc h263_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H263;"
6200 check_cc h264_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H264;"
6201 check_cc vp8_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP8;"
6202 check_cc vp9_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP9;"
6203
6204 check_header sys/videoio.h
6205 test_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6206
6207 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
6208 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
6209 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
6210 # w32api 3.12 had it defined wrong
6211 check_cpp_condition vfwcap_defines vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER"
6212
6213 check_type "dshow.h" IBaseFilter
6214
6215 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
6216 check_header "dev/bktr/ioctl_meteor.h dev/bktr/ioctl_bt848.h"                   ||
6217     check_header "machine/ioctl_meteor.h machine/ioctl_bt848.h"                 ||
6218     check_header "dev/video/meteor/ioctl_meteor.h dev/video/bktr/ioctl_bt848.h" ||
6219     check_header "dev/ic/bt8xx.h"
6220
6221 if check_struct sys/soundcard.h audio_buf_info bytes; then
6222     enable_sanitized sys/soundcard.h
6223 else
6224     test_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_sanitized sys/soundcard.h
6225     #include <sys/soundcard.h>
6226     audio_buf_info abc;
6227 EOF
6228 fi
6229
6230 enabled alsa && check_pkg_config alsa alsa "alsa/asoundlib.h" snd_pcm_htimestamp ||
6231     check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound
6232
6233 enabled libjack &&
6234     require_pkg_config libjack jack jack/jack.h jack_port_get_latency_range
6235
6236 enabled sndio && check_lib sndio sndio.h sio_open -lsndio
6237
6238 if enabled libcdio; then
6239     check_pkg_config libcdio libcdio_paranoia "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open ||
6240     check_pkg_config libcdio libcdio_paranoia "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open ||
6241     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6242     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6243     die "ERROR: No usable libcdio/cdparanoia found"
6244 fi
6245
6246 enabled libxcb && check_pkg_config libxcb "xcb >= 1.4" xcb/xcb.h xcb_connect ||
6247     disable libxcb_shm libxcb_shape libxcb_xfixes
6248
6249 if enabled libxcb; then
6250     enabled libxcb_shm    && check_pkg_config libxcb_shm    xcb-shm    xcb/shm.h    xcb_shm_attach
6251     enabled libxcb_shape  && check_pkg_config libxcb_shape  xcb-shape  xcb/shape.h  xcb_shape_get_rectangles
6252     enabled libxcb_xfixes && check_pkg_config libxcb_xfixes xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image
6253 fi
6254
6255 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6256
6257 # d3d11va requires linking directly to dxgi and d3d11 if not building for
6258 # the desktop api partition
6259 test_cpp <<EOF && enable uwp && d3d11va_extralibs="-ldxgi -ld3d11"
6260 #ifdef WINAPI_FAMILY
6261 #include <winapifamily.h>
6262 #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
6263 #error desktop, not uwp
6264 #else
6265 // WINAPI_FAMILY_APP, WINAPI_FAMILY_PHONE_APP => UWP
6266 #endif
6267 #else
6268 #error no family set
6269 #endif
6270 EOF
6271
6272 enabled vaapi &&
6273     check_lib vaapi va/va.h vaInitialize -lva
6274
6275 enabled vaapi &&
6276     check_cc vaapi "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)"
6277
6278 if enabled vaapi; then
6279     check_lib vaapi_drm "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm
6280     check_lib vaapi_x11 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 -lX11
6281 fi
6282
6283 enabled vaapi &&
6284     check_cpp_condition vaapi_1 "va/va.h" "VA_CHECK_VERSION(1, 0, 0)"
6285
6286 if enabled_all opencl libdrm ; then
6287     check_type "CL/cl_intel.h" "clCreateImageFromFdINTEL_fn" &&
6288         enable opencl_drm_beignet
6289     check_func_headers "CL/cl_ext.h" clImportMemoryARM &&
6290         enable opencl_drm_arm
6291 fi
6292
6293 if enabled_all opencl vaapi ; then
6294     enabled opencl_drm_beignet && enable opencl_vaapi_beignet
6295     if enabled libmfx ; then
6296         check_type "CL/cl.h CL/va_ext.h" "clCreateFromVA_APIMediaSurfaceINTEL_fn" &&
6297             enable opencl_vaapi_intel_media
6298     fi
6299 fi
6300
6301 if enabled_all opencl dxva2 ; then
6302     check_type "CL/cl_dx9_media_sharing.h" cl_dx9_surface_info_khr &&
6303         enable opencl_dxva2
6304 fi
6305
6306 if enabled_all opencl d3d11va ; then
6307     check_type "CL/cl_d3d11.h" clGetDeviceIDsFromD3D11KHR_fn &&
6308         enable opencl_d3d11
6309 fi
6310
6311 enabled vdpau &&
6312     check_cpp_condition vdpau vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP"
6313
6314 enabled vdpau &&
6315     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
6316
6317 enabled crystalhd && check_lib crystalhd "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd
6318
6319 if enabled x86; then
6320     case $target_os in
6321         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6322             ;;
6323         *)
6324             disable ffnvcodec cuvid nvdec nvenc
6325             ;;
6326     esac
6327 else
6328     disable ffnvcodec cuvid nvdec nvenc
6329 fi
6330
6331 enabled ffnvcodec && enable cuda
6332
6333 enabled nvenc &&
6334     test_cc -I$source_path <<EOF || disable nvenc
6335 #include <ffnvcodec/nvEncodeAPI.h>
6336 NV_ENCODE_API_FUNCTION_LIST flist;
6337 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6338 int main(void) { return 0; }
6339 EOF
6340
6341 enabled amf &&
6342     check_cpp_condition amf "AMF/core/Version.h" \
6343         "(AMF_VERSION_MAJOR << 48 | AMF_VERSION_MINOR << 32 | AMF_VERSION_RELEASE << 16 | AMF_VERSION_BUILD_NUM) >= 0x0001000400040001"
6344
6345 # Funny iconv installations are not unusual, so check it after all flags have been set
6346 if enabled libc_iconv; then
6347     check_func_headers iconv.h iconv
6348 elif enabled iconv; then
6349     check_func_headers iconv.h iconv || check_lib iconv iconv.h iconv -liconv
6350 fi
6351
6352 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6353
6354 # add some useful compiler flags if supported
6355 check_cflags -Wdeclaration-after-statement
6356 check_cflags -Wall
6357 check_cflags -Wdisabled-optimization
6358 check_cflags -Wpointer-arith
6359 check_cflags -Wredundant-decls
6360 check_cflags -Wwrite-strings
6361 check_cflags -Wtype-limits
6362 check_cflags -Wundef
6363 check_cflags -Wmissing-prototypes
6364 check_cflags -Wno-pointer-to-int-cast
6365 check_cflags -Wstrict-prototypes
6366 check_cflags -Wempty-body
6367
6368 if enabled extra_warnings; then
6369     check_cflags -Wcast-qual
6370     check_cflags -Wextra
6371     check_cflags -Wpedantic
6372 fi
6373
6374 check_disable_warning(){
6375     warning_flag=-W${1#-Wno-}
6376     test_cflags $unknown_warning_flags $warning_flag && add_cflags $1
6377 }
6378
6379 test_cflags -Werror=unused-command-line-argument &&
6380     append unknown_warning_flags "-Werror=unused-command-line-argument"
6381 test_cflags -Werror=unknown-warning-option &&
6382     append unknown_warning_flags "-Werror=unknown-warning-option"
6383
6384 check_disable_warning -Wno-parentheses
6385 check_disable_warning -Wno-switch
6386 check_disable_warning -Wno-format-zero-length
6387 check_disable_warning -Wno-pointer-sign
6388 check_disable_warning -Wno-unused-const-variable
6389 check_disable_warning -Wno-bool-operation
6390
6391 check_disable_warning_headers(){
6392     warning_flag=-W${1#-Wno-}
6393     test_cflags $warning_flag && add_cflags_headers $1
6394 }
6395
6396 check_disable_warning_headers -Wno-deprecated-declarations
6397 check_disable_warning_headers -Wno-unused-variable
6398
6399 test_cc <<EOF && enable blocks_extension
6400 void (^block)(void);
6401 EOF
6402
6403 # add some linker flags
6404 check_ldflags -Wl,--warn-common
6405 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6406 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir && add_ldsoflags -Wl,-rpath,$libdir
6407 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6408
6409 # add some strip flags
6410 check_stripflags -x
6411
6412 enabled neon_clobber_test &&
6413     check_ldflags -Wl,--wrap,avcodec_open2              \
6414                   -Wl,--wrap,avcodec_decode_audio4      \
6415                   -Wl,--wrap,avcodec_decode_video2      \
6416                   -Wl,--wrap,avcodec_decode_subtitle2   \
6417                   -Wl,--wrap,avcodec_encode_audio2      \
6418                   -Wl,--wrap,avcodec_encode_video2      \
6419                   -Wl,--wrap,avcodec_encode_subtitle    \
6420                   -Wl,--wrap,avcodec_send_packet        \
6421                   -Wl,--wrap,avcodec_receive_packet     \
6422                   -Wl,--wrap,avcodec_send_frame         \
6423                   -Wl,--wrap,avcodec_receive_frame      \
6424                   -Wl,--wrap,swr_convert                \
6425                   -Wl,--wrap,avresample_convert ||
6426     disable neon_clobber_test
6427
6428 enabled xmm_clobber_test &&
6429     check_ldflags -Wl,--wrap,avcodec_open2              \
6430                   -Wl,--wrap,avcodec_decode_audio4      \
6431                   -Wl,--wrap,avcodec_decode_video2      \
6432                   -Wl,--wrap,avcodec_decode_subtitle2   \
6433                   -Wl,--wrap,avcodec_encode_audio2      \
6434                   -Wl,--wrap,avcodec_encode_video2      \
6435                   -Wl,--wrap,avcodec_encode_subtitle    \
6436                   -Wl,--wrap,avcodec_send_packet        \
6437                   -Wl,--wrap,avcodec_receive_packet     \
6438                   -Wl,--wrap,avcodec_send_frame         \
6439                   -Wl,--wrap,avcodec_receive_frame      \
6440                   -Wl,--wrap,swr_convert                \
6441                   -Wl,--wrap,avresample_convert         \
6442                   -Wl,--wrap,sws_scale ||
6443     disable xmm_clobber_test
6444
6445 check_ld "cc" proper_dce <<EOF
6446 extern const int array[512];
6447 static inline int func(void) { return array[0]; }
6448 int main(void) { return 0; }
6449 EOF
6450
6451 if enabled proper_dce; then
6452     echo "X { local: *; };" > $TMPV
6453     if test_ldflags -Wl,${version_script},$TMPV; then
6454         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6455         quotes='""'
6456         test_cc <<EOF && enable symver_asm_label
6457 void ff_foo(void) __asm__ ("av_foo@VERSION");
6458 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6459 EOF
6460         test_cc <<EOF && enable symver_gnu_asm
6461 __asm__(".symver ff_foo,av_foo@VERSION");
6462 void ff_foo(void) {}
6463 EOF
6464     fi
6465 fi
6466
6467 if [ -z "$optflags" ]; then
6468     if enabled small; then
6469         optflags=$cflags_size
6470     elif enabled optimizations; then
6471         optflags=$cflags_speed
6472     else
6473         optflags=$cflags_noopt
6474     fi
6475 fi
6476
6477 if [ -z "$nvccflags" ]; then
6478     nvccflags=$nvccflags_default
6479 fi
6480
6481 if enabled x86_64 || enabled ppc64 || enabled aarch64; then
6482     nvccflags="$nvccflags -m64"
6483 else
6484     nvccflags="$nvccflags -m32"
6485 fi
6486
6487 check_optflags(){
6488     check_cflags "$@"
6489     enabled lto && check_ldflags "$@"
6490 }
6491
6492 check_optflags $optflags
6493 check_optflags -fno-math-errno
6494 check_optflags -fno-signed-zeros
6495
6496 if enabled lto; then
6497     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6498     check_cflags  -flto
6499     check_ldflags -flto $cpuflags
6500     disable inline_asm_direct_symbol_refs
6501 fi
6502
6503 enabled ftrapv && check_cflags -ftrapv
6504
6505 test_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6506 int x;
6507 EOF
6508
6509
6510 if enabled icc; then
6511     # Just warnings, no remarks
6512     check_cflags -w1
6513     # -wd: Disable following warnings
6514     # 144, 167, 556: -Wno-pointer-sign
6515     # 188: enumerated type mixed with another type
6516     # 1292: attribute "foo" ignored
6517     # 1419: external declaration in primary source file
6518     # 10006: ignoring unknown option -fno-signed-zeros
6519     # 10148: ignoring unknown option -Wno-parentheses
6520     # 10156: ignoring option '-W'; no argument required
6521     # 13200: No EMMS instruction before call to function
6522     # 13203: No EMMS instruction before return from function
6523     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6524     # 11030: Warning unknown option --as-needed
6525     # 10156: ignoring option '-export'; no argument required
6526     check_ldflags -wd10156,11030
6527     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6528     enable ebp_available
6529     # The test above does not test linking
6530     enabled lto && disable symver_asm_label
6531     if enabled x86_32; then
6532         icc_version=$($cc -dumpversion)
6533         test ${icc_version%%.*} -ge 11 &&
6534             check_cflags -falign-stack=maintain-16-byte ||
6535             disable aligned_stack
6536     fi
6537 elif enabled gcc; then
6538     check_optflags -fno-tree-vectorize
6539     check_cflags -Werror=format-security
6540     check_cflags -Werror=implicit-function-declaration
6541     check_cflags -Werror=missing-prototypes
6542     check_cflags -Werror=return-type
6543     check_cflags -Werror=vla
6544     check_cflags -Wformat
6545     check_cflags -fdiagnostics-color=auto
6546     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6547     if enabled x86_32; then
6548         case $target_os in
6549         *bsd*)
6550             # BSDs don't guarantee a 16 byte aligned stack, but we can
6551             # request GCC to try to maintain 16 byte alignment throughout
6552             # function calls. Library entry points that might call assembly
6553             # functions align the stack. (The parameter means 2^4 bytes.)
6554             check_cflags -mpreferred-stack-boundary=4
6555             ;;
6556         esac
6557     fi
6558 elif enabled llvm_gcc; then
6559     check_cflags -mllvm -stack-alignment=16
6560 elif enabled clang; then
6561     if enabled x86_32; then
6562         # Clang doesn't support maintaining alignment without assuming the
6563         # same alignment in every function. If 16 byte alignment would be
6564         # enabled, one would also have to either add attribute_align_arg on
6565         # every single entry point into the libraries or enable -mstackrealign
6566         # (doing stack realignment in every single function).
6567         case $target_os in
6568         mingw32|win32|*bsd*)
6569             disable aligned_stack
6570             ;;
6571         *)
6572             check_cflags -mllvm -stack-alignment=16
6573             check_cflags -mstack-alignment=16
6574             ;;
6575         esac
6576     else
6577         check_cflags -mllvm -stack-alignment=16
6578         check_cflags -mstack-alignment=16
6579     fi
6580     check_cflags -Qunused-arguments
6581     check_cflags -Werror=implicit-function-declaration
6582     check_cflags -Werror=missing-prototypes
6583     check_cflags -Werror=return-type
6584 elif enabled cparser; then
6585     add_cflags -Wno-missing-variable-declarations
6586     add_cflags -Wno-empty-statement
6587 elif enabled armcc; then
6588     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6589     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6590     # 2523: use of inline assembly is deprecated
6591     add_cflags -W${armcc_opt},--diag_suppress=2523
6592     add_cflags -W${armcc_opt},--diag_suppress=1207
6593     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6594     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6595     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6596     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6597 elif enabled pathscale; then
6598     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6599     disable inline_asm
6600 elif enabled_any msvc icl; then
6601     enabled x86_32 && disable aligned_stack
6602     enabled_all x86_32 debug && add_cflags -Oy-
6603     enabled debug && add_ldflags -debug
6604     enable pragma_deprecated
6605     if enabled icl; then
6606         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6607         # (correctly) on icl 13.x.
6608         test_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6609             add_cflags -Qansi-alias
6610         # Some inline asm is not compilable in debug
6611         if enabled debug; then
6612             disable ebp_available
6613             disable ebx_available
6614         fi
6615     fi
6616     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6617     check_cpp_condition log2 crtversion.h "_VC_CRT_MAJOR_VERSION >= 12"
6618     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6619     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6620     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6621     # MSVC 2013 and newer can handle it fine.
6622     # If this declspec fails, force including stdlib.h before the restrict redefinition
6623     # happens in config.h.
6624     if [ $restrict_keyword != restrict ]; then
6625         test_cc <<EOF || add_cflags -FIstdlib.h
6626 __declspec($restrict_keyword) void *foo(int);
6627 EOF
6628     fi
6629     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6630     # Issue has been fixed in MSVC v19.00.24218.
6631     test_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6632         check_cflags -d2SSAOptimizer-
6633     # enable utf-8 source processing on VS2015 U2 and newer
6634     test_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6635         add_cflags -utf-8
6636 fi
6637
6638 for pfx in "" host_; do
6639     varname=${pfx%_}cc_type
6640     eval "type=\$$varname"
6641     if [ "$type" = "msvc" ]; then
6642         test_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6643 static inline int foo(int a) { return a; }
6644 EOF
6645     fi
6646 done
6647
6648 case $as_type in
6649     clang)
6650         add_asflags -Qunused-arguments
6651     ;;
6652 esac
6653
6654 case $ld_type in
6655     clang)
6656         check_ldflags -Qunused-arguments
6657     ;;
6658 esac
6659
6660 enable frame_thread_encoder
6661
6662 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6663
6664 check_deps $CONFIG_LIST       \
6665            $CONFIG_EXTRA      \
6666            $HAVE_LIST         \
6667            $ALL_COMPONENTS    \
6668
6669 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"
6670 enabled avresample && warn "Building with deprecated library libavresample"
6671
6672 if test $target_os = "haiku"; then
6673     disable memalign
6674     disable posix_memalign
6675 fi
6676
6677 flatten_extralibs(){
6678     unset nested_entries
6679     list_name=$1
6680     eval list=\$${1}
6681     for entry in $list; do
6682         entry_copy=$entry
6683         resolve entry_copy
6684         append nested_entries $(filter '*_extralibs' $entry_copy)
6685         flat_entries=$(filter_out '*_extralibs' $entry_copy)
6686         eval $entry="\$flat_entries"
6687     done
6688     append $list_name "$nested_entries"
6689
6690     resolve nested_entries
6691     if test -n "$(filter '*_extralibs' $nested_entries)"; then
6692         flatten_extralibs $list_name
6693     fi
6694 }
6695
6696 flatten_extralibs_wrapper(){
6697     list_name=$1
6698     flatten_extralibs $list_name
6699     unique $list_name
6700     resolve $list_name
6701     eval $list_name=\$\(\$ldflags_filter \$$list_name\)
6702     eval printf \''%s'\' \""\$$list_name"\"
6703 }
6704
6705 for linkunit in $LIBRARY_LIST; do
6706     unset current_extralibs
6707     eval components=\$$(toupper ${linkunit})_COMPONENTS_LIST
6708     for comp in ${components}; do
6709         enabled $comp || continue
6710         comp_extralibs="${comp}_extralibs"
6711         append current_extralibs $comp_extralibs
6712     done
6713     eval prepend ${linkunit}_extralibs $current_extralibs
6714 done
6715
6716 for linkunit in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
6717     eval ${linkunit}_extralibs=\$\(flatten_extralibs_wrapper ${linkunit}_extralibs\)
6718 done
6719
6720 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6721
6722 for thread in $THREADS_LIST; do
6723     if enabled $thread; then
6724         test -n "$thread_type" &&
6725             die "ERROR: Only one thread type must be selected." ||
6726             thread_type="$thread"
6727     fi
6728 done
6729
6730 if disabled stdatomic; then
6731     if enabled atomics_gcc; then
6732         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
6733     elif enabled atomics_win32; then
6734         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
6735     elif enabled atomics_suncc; then
6736         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
6737     elif enabled pthreads; then
6738         add_compat atomics/pthread/stdatomic.o
6739         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
6740     else
6741         enabled threads && die "Threading is enabled, but no atomics are available"
6742         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
6743     fi
6744 fi
6745
6746 # Check if requested libraries were found.
6747 for lib in $AUTODETECT_LIBS; do
6748     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
6749 done
6750
6751 enabled zlib && add_cppflags -DZLIB_CONST
6752
6753 # conditional library dependencies, in linking order
6754 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6755 enabled afir_filter         && prepend avfilter_deps "avcodec"
6756 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6757 enabled aresample_filter    && prepend avfilter_deps "swresample"
6758 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6759 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6760 enabled convolve_filter     && prepend avfilter_deps "avcodec"
6761 enabled deconvolve_filter   && prepend avfilter_deps "avcodec"
6762 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6763 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6764 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6765 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6766 enabled firequalizer_filter && prepend avfilter_deps "avcodec"
6767 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6768 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6769 enabled pan_filter          && prepend avfilter_deps "swresample"
6770 enabled pp_filter           && prepend avfilter_deps "postproc"
6771 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6772 enabled resample_filter && prepend avfilter_deps "avresample"
6773 enabled sab_filter          && prepend avfilter_deps "swscale"
6774 enabled scale_filter    && prepend avfilter_deps "swscale"
6775 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6776 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6777 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6778 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6779 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6780 enabled signature_filter    && prepend avfilter_deps "avcodec avformat"
6781 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6782 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6783 enabled spp_filter          && prepend avfilter_deps "avcodec"
6784 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6785 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6786 enabled zoompan_filter      && prepend avfilter_deps "swscale"
6787
6788 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6789
6790 #FIXME
6791 enabled sdl2_outdev     && add_cflags $(filter_out '-Dmain=SDL_main' $sdl2_cflags)
6792
6793 enabled opus_decoder    && prepend avcodec_deps "swresample"
6794
6795 expand_deps(){
6796     lib_deps=${1}_deps
6797     eval "deps=\$$lib_deps"
6798     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
6799     unique $lib_deps
6800 }
6801
6802 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6803 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6804
6805 map 'expand_deps $v' $LIBRARY_LIST
6806
6807 if test "$quiet" != "yes"; then
6808
6809 echo "install prefix            $prefix"
6810 echo "source path               $source_path"
6811 echo "C compiler                $cc"
6812 echo "C library                 $libc_type"
6813 if test "$host_cc" != "$cc"; then
6814     echo "host C compiler           $host_cc"
6815     echo "host C library            $host_libc_type"
6816 fi
6817 echo "ARCH                      $arch ($cpu)"
6818 if test "$build_suffix" != ""; then
6819     echo "build suffix              $build_suffix"
6820 fi
6821 if test "$progs_suffix" != ""; then
6822     echo "progs suffix              $progs_suffix"
6823 fi
6824 if test "$extra_version" != ""; then
6825     echo "version string suffix     $extra_version"
6826 fi
6827 echo "big-endian                ${bigendian-no}"
6828 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6829 if enabled x86; then
6830     echo "standalone assembly       ${x86asm-no}"
6831     echo "x86 assembler             ${x86asmexe}"
6832     echo "MMX enabled               ${mmx-no}"
6833     echo "MMXEXT enabled            ${mmxext-no}"
6834     echo "3DNow! enabled            ${amd3dnow-no}"
6835     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6836     echo "SSE enabled               ${sse-no}"
6837     echo "SSSE3 enabled             ${ssse3-no}"
6838     echo "AESNI enabled             ${aesni-no}"
6839     echo "AVX enabled               ${avx-no}"
6840     echo "AVX2 enabled              ${avx2-no}"
6841     echo "AVX-512 enabled           ${avx512-no}"
6842     echo "XOP enabled               ${xop-no}"
6843     echo "FMA3 enabled              ${fma3-no}"
6844     echo "FMA4 enabled              ${fma4-no}"
6845     echo "i686 features enabled     ${i686-no}"
6846     echo "CMOV is fast              ${fast_cmov-no}"
6847     echo "EBX available             ${ebx_available-no}"
6848     echo "EBP available             ${ebp_available-no}"
6849 fi
6850 if enabled aarch64; then
6851     echo "NEON enabled              ${neon-no}"
6852     echo "VFP enabled               ${vfp-no}"
6853 fi
6854 if enabled arm; then
6855     echo "ARMv5TE enabled           ${armv5te-no}"
6856     echo "ARMv6 enabled             ${armv6-no}"
6857     echo "ARMv6T2 enabled           ${armv6t2-no}"
6858     echo "VFP enabled               ${vfp-no}"
6859     echo "NEON enabled              ${neon-no}"
6860     echo "THUMB enabled             ${thumb-no}"
6861 fi
6862 if enabled mips; then
6863     echo "MIPS FPU enabled          ${mipsfpu-no}"
6864     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
6865     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
6866     echo "MIPS MSA enabled          ${msa-no}"
6867     echo "LOONGSON MMI enabled      ${mmi-no}"
6868 fi
6869 if enabled ppc; then
6870     echo "AltiVec enabled           ${altivec-no}"
6871     echo "VSX enabled               ${vsx-no}"
6872     echo "POWER8 enabled            ${power8-no}"
6873     echo "PPC 4xx optimizations     ${ppc4xx-no}"
6874     echo "dcbzl available           ${dcbzl-no}"
6875 fi
6876 echo "debug symbols             ${debug-no}"
6877 echo "strip symbols             ${stripping-no}"
6878 echo "optimize for size         ${small-no}"
6879 echo "optimizations             ${optimizations-no}"
6880 echo "static                    ${static-no}"
6881 echo "shared                    ${shared-no}"
6882 echo "postprocessing support    ${postproc-no}"
6883 echo "network support           ${network-no}"
6884 echo "threading support         ${thread_type-no}"
6885 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
6886 echo "texi2html enabled         ${texi2html-no}"
6887 echo "perl enabled              ${perl-no}"
6888 echo "pod2man enabled           ${pod2man-no}"
6889 echo "makeinfo enabled          ${makeinfo-no}"
6890 echo "makeinfo supports HTML    ${makeinfo_html-no}"
6891 test -n "$random_seed" &&
6892     echo "random seed               ${random_seed}"
6893 echo
6894
6895 echo "External libraries:"
6896 print_enabled '' $EXTERNAL_LIBRARY_LIST $EXTERNAL_AUTODETECT_LIBRARY_LIST | print_in_columns
6897 echo
6898
6899 echo "External libraries providing hardware acceleration:"
6900 print_enabled '' $HWACCEL_LIBRARY_LIST $HWACCEL_AUTODETECT_LIBRARY_LIST | print_in_columns
6901 echo
6902
6903 echo "Libraries:"
6904 print_enabled '' $LIBRARY_LIST | print_in_columns
6905 echo
6906
6907 echo "Programs:"
6908 print_enabled '' $PROGRAM_LIST | print_in_columns
6909 echo
6910
6911 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
6912     echo "Enabled ${type}s:"
6913     eval list=\$$(toupper $type)_LIST
6914     print_enabled '_*' $list | print_in_columns
6915     echo
6916 done
6917
6918 if test -n "$ignore_tests"; then
6919     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
6920     echo "Ignored FATE tests:"
6921     echo $ignore_tests | print_in_columns
6922     echo
6923 fi
6924
6925 echo "License: $license"
6926
6927 fi # test "$quiet" != "yes"
6928
6929 if test -n "$WARNINGS"; then
6930     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
6931     enabled fatal_warnings && exit 1
6932 fi
6933
6934 test -e Makefile || echo "include $source_path/Makefile" > Makefile
6935
6936 esc(){
6937     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
6938 }
6939
6940 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" > ffbuild/config.fate
6941
6942 enabled stripping || strip="echo skipping strip"
6943 enabled stripping || striptype=""
6944
6945 config_files="$TMPH ffbuild/config.mak doc/config.texi"
6946
6947 cat > ffbuild/config.mak <<EOF
6948 # Automatically generated by configure - do not modify!
6949 ifndef FFMPEG_CONFIG_MAK
6950 FFMPEG_CONFIG_MAK=1
6951 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
6952 prefix=$prefix
6953 LIBDIR=\$(DESTDIR)$libdir
6954 SHLIBDIR=\$(DESTDIR)$shlibdir
6955 INCDIR=\$(DESTDIR)$incdir
6956 BINDIR=\$(DESTDIR)$bindir
6957 DATADIR=\$(DESTDIR)$datadir
6958 DOCDIR=\$(DESTDIR)$docdir
6959 MANDIR=\$(DESTDIR)$mandir
6960 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
6961 INSTALL_NAME_DIR=$install_name_dir
6962 SRC_PATH=$source_path
6963 SRC_LINK=$source_link
6964 ifndef MAIN_MAKEFILE
6965 SRC_PATH:=\$(SRC_PATH:.%=..%)
6966 endif
6967 CC_IDENT=$cc_ident
6968 ARCH=$arch
6969 INTRINSICS=$intrinsics
6970 EXTERN_PREFIX=$extern_prefix
6971 CC=$cc
6972 CXX=$cxx
6973 AS=$as
6974 OBJCC=$objcc
6975 LD=$ld
6976 DEPCC=$dep_cc
6977 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
6978 DEPAS=$as
6979 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
6980 X86ASM=$x86asmexe
6981 DEPX86ASM=$x86asmexe
6982 DEPX86ASMFLAGS=\$(X86ASMFLAGS)
6983 AR=$ar
6984 ARFLAGS=$arflags
6985 AR_O=$ar_o
6986 AR_CMD=$ar
6987 NM_CMD=$nm
6988 RANLIB=$ranlib
6989 STRIP=$strip
6990 STRIPTYPE=$striptype
6991 NVCC=$nvcc
6992 CP=cp -p
6993 LN_S=$ln_s
6994 CPPFLAGS=$CPPFLAGS
6995 CFLAGS=$CFLAGS
6996 CXXFLAGS=$CXXFLAGS
6997 OBJCFLAGS=$OBJCFLAGS
6998 ASFLAGS=$ASFLAGS
6999 NVCCFLAGS=$nvccflags
7000 AS_C=$AS_C
7001 AS_O=$AS_O
7002 OBJCC_C=$OBJCC_C
7003 OBJCC_E=$OBJCC_E
7004 OBJCC_O=$OBJCC_O
7005 CC_C=$CC_C
7006 CC_E=$CC_E
7007 CC_O=$CC_O
7008 CXX_C=$CXX_C
7009 CXX_O=$CXX_O
7010 NVCC_C=$NVCC_C
7011 NVCC_O=$NVCC_O
7012 LD_O=$LD_O
7013 X86ASM_O=$X86ASM_O
7014 LD_LIB=$LD_LIB
7015 LD_PATH=$LD_PATH
7016 DLLTOOL=$dlltool
7017 WINDRES=$windres
7018 DEPWINDRES=$dep_cc
7019 DOXYGEN=$doxygen
7020 LDFLAGS=$LDFLAGS
7021 LDEXEFLAGS=$LDEXEFLAGS
7022 LDSOFLAGS=$LDSOFLAGS
7023 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
7024 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
7025 X86ASMFLAGS=$X86ASMFLAGS
7026 BUILDSUF=$build_suffix
7027 PROGSSUF=$progs_suffix
7028 FULLNAME=$FULLNAME
7029 LIBPREF=$LIBPREF
7030 LIBSUF=$LIBSUF
7031 LIBNAME=$LIBNAME
7032 SLIBPREF=$SLIBPREF
7033 SLIBSUF=$SLIBSUF
7034 EXESUF=$EXESUF
7035 EXTRA_VERSION=$extra_version
7036 CCDEP=$CCDEP
7037 CXXDEP=$CXXDEP
7038 CCDEP_FLAGS=$CCDEP_FLAGS
7039 ASDEP=$ASDEP
7040 ASDEP_FLAGS=$ASDEP_FLAGS
7041 X86ASMDEP=$X86ASMDEP
7042 X86ASMDEP_FLAGS=$X86ASMDEP_FLAGS
7043 CC_DEPFLAGS=$CC_DEPFLAGS
7044 AS_DEPFLAGS=$AS_DEPFLAGS
7045 X86ASM_DEPFLAGS=$X86ASM_DEPFLAGS
7046 HOSTCC=$host_cc
7047 HOSTLD=$host_ld
7048 HOSTCFLAGS=$host_cflags
7049 HOSTCPPFLAGS=$host_cppflags
7050 HOSTEXESUF=$HOSTEXESUF
7051 HOSTLDFLAGS=$host_ldflags
7052 HOSTEXTRALIBS=$host_extralibs
7053 DEPHOSTCC=$host_cc
7054 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
7055 HOSTCCDEP=$HOSTCCDEP
7056 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
7057 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
7058 HOSTCC_C=$HOSTCC_C
7059 HOSTCC_O=$HOSTCC_O
7060 HOSTLD_O=$HOSTLD_O
7061 TARGET_EXEC=$target_exec $target_exec_args
7062 TARGET_PATH=$target_path
7063 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
7064 CFLAGS-ffplay=${sdl2_cflags}
7065 CFLAGS_HEADERS=$CFLAGS_HEADERS
7066 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
7067 EXTRALIBS=$extralibs
7068 COMPAT_OBJS=$compat_objs
7069 INSTALL=$install
7070 LIBTARGET=${LIBTARGET}
7071 SLIBNAME=${SLIBNAME}
7072 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
7073 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
7074 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
7075 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
7076 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
7077 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
7078 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
7079 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
7080 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
7081 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
7082 NOREDZONE_FLAGS=$noredzone_flags
7083 LIBFUZZER_PATH=$libfuzzer_path
7084 IGNORE_TESTS=$ignore_tests
7085 EOF
7086
7087 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> ffbuild/config.mak' $LIBRARY_LIST
7088
7089 for entry in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
7090     eval echo "EXTRALIBS-${entry}=\$${entry}_extralibs" >> ffbuild/config.mak
7091 done
7092
7093 cat > $TMPH <<EOF
7094 /* Automatically generated by configure - do not modify! */
7095 #ifndef FFMPEG_CONFIG_H
7096 #define FFMPEG_CONFIG_H
7097 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
7098 #define FFMPEG_LICENSE "$(c_escape $license)"
7099 #define CONFIG_THIS_YEAR 2018
7100 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
7101 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
7102 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
7103 #define av_restrict $restrict_keyword
7104 #define EXTERN_PREFIX "${extern_prefix}"
7105 #define EXTERN_ASM ${extern_prefix}
7106 #define BUILDSUF "$build_suffix"
7107 #define SLIBSUF "$SLIBSUF"
7108 #define HAVE_MMX2 HAVE_MMXEXT
7109 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
7110 EOF
7111
7112 test -n "$assert_level" &&
7113     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
7114
7115 test -n "$malloc_prefix" &&
7116     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
7117
7118 if enabled x86asm; then
7119     append config_files $TMPASM
7120     cat > $TMPASM <<EOF
7121 ; Automatically generated by configure - do not modify!
7122 EOF
7123 fi
7124
7125 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
7126
7127
7128 mkdir -p doc
7129 mkdir -p tests
7130 mkdir -p tests/api
7131 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
7132
7133 print_config ARCH_   "$config_files" $ARCH_LIST
7134 print_config HAVE_   "$config_files" $HAVE_LIST
7135 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
7136                                      $CONFIG_EXTRA      \
7137                                      $ALL_COMPONENTS    \
7138
7139 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
7140 echo "endif # FFMPEG_CONFIG_MAK" >> ffbuild/config.mak
7141
7142 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
7143 cp_if_changed $TMPH config.h
7144 touch ffbuild/.config
7145
7146 enabled x86asm && cp_if_changed $TMPASM config.asm
7147
7148 cat > $TMPH <<EOF
7149 /* Generated by ffmpeg configure */
7150 #ifndef AVUTIL_AVCONFIG_H
7151 #define AVUTIL_AVCONFIG_H
7152 EOF
7153
7154 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
7155
7156 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
7157
7158 cp_if_changed $TMPH libavutil/avconfig.h
7159
7160 # generate the lists of enabled components
7161 print_enabled_components(){
7162     file=$1
7163     struct_name=$2
7164     name=$3
7165     shift 3
7166     echo "static const $struct_name * const $name[] = {" > $TMPH
7167     for c in $*; do
7168         if enabled $c; then
7169             case $name in
7170                 indev_list)
7171                     c=$(add_suffix _demuxer $(remove_suffix _indev $c))
7172                 ;;
7173                 outdev_list)
7174                     c=$(add_suffix _muxer $(remove_suffix _outdev $c))
7175                 ;;
7176             esac
7177             printf "    &ff_%s,\n" $c >> $TMPH
7178         fi
7179     done
7180     echo "    NULL };" >> $TMPH
7181     cp_if_changed $TMPH $file
7182 }
7183
7184 print_enabled_components libavcodec/codec_list.c AVCodec codec_list $CODEC_LIST
7185 print_enabled_components libavcodec/parser_list.c AVCodecParser parser_list $PARSER_LIST
7186 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
7187 print_enabled_components libavdevice/indev_list.c AVInputFormat indev_list $INDEV_LIST
7188 print_enabled_components libavdevice/outdev_list.c AVOutputFormat outdev_list $OUTDEV_LIST
7189 print_enabled_components libavformat/demuxer_list.c AVInputFormat demuxer_list $DEMUXER_LIST
7190 print_enabled_components libavformat/muxer_list.c AVOutputFormat muxer_list $MUXER_LIST
7191 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
7192
7193 # Settings for pkg-config files
7194
7195 cat > $TMPH <<EOF
7196 # Automatically generated by configure - do not modify!
7197 shared=$shared
7198 build_suffix=$build_suffix
7199 prefix=$prefix
7200 libdir=$libdir
7201 incdir=$incdir
7202 rpath=$(enabled rpath && echo "-Wl,-rpath,\${libdir}")
7203 source_path=${source_path}
7204 LIBPREF=${LIBPREF}
7205 LIBSUF=${LIBSUF}
7206 extralibs_avutil="$avutil_extralibs"
7207 extralibs_avcodec="$avcodec_extralibs"
7208 extralibs_avformat="$avformat_extralibs"
7209 extralibs_avdevice="$avdevice_extralibs"
7210 extralibs_avfilter="$avfilter_extralibs"
7211 extralibs_avresample="$avresample_extralibs"
7212 extralibs_postproc="$postproc_extralibs"
7213 extralibs_swscale="$swscale_extralibs"
7214 extralibs_swresample="$swresample_extralibs"
7215 EOF
7216
7217 for lib in $LIBRARY_LIST; do
7218     lib_deps="$(eval echo \$${lib}_deps)"
7219     echo ${lib}_deps=\"$lib_deps\" >> $TMPH
7220 done
7221
7222 cp_if_changed $TMPH ffbuild/config.sh