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-libssh          enable SFTP protocol via libssh [no]
 261   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
 262   --enable-libtheora       enable Theora encoding via libtheora [no]
 263   --enable-libtls          enable LibreSSL (via libtls), needed for https support
 264                            if openssl or gnutls is not used [no]
 265   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 266   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 267   --enable-libvidstab      enable video stabilization using vid.stab [no]
 268   --enable-libvmaf         enable vmaf filter via libvmaf [no]
 269   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 270   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 271                            native implementation exists [no]
 272   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 273   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 274   --enable-libwebp         enable WebP encoding via libwebp [no]
 275   --enable-libx264         enable H.264 encoding via x264 [no]
 276   --enable-libx265         enable HEVC encoding via x265 [no]
 277   --enable-libxavs         enable AVS encoding via xavs [no]
 278   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
 279   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
 280   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
 281   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
 282   --enable-libxvid         enable Xvid encoding via xvidcore,
 283                            native MPEG-4/Xvid encoder exists [no]
 284   --enable-libxml2         enable XML parsing using the C library libxml2 [no]
 285   --enable-libzimg         enable z.lib, needed for zscale filter [no]
 286   --enable-libzmq          enable message passing via libzmq [no]
 287   --enable-libzvbi         enable teletext support via libzvbi [no]
 288   --enable-lv2             enable LV2 audio filtering [no]
 289   --disable-lzma           disable lzma [autodetect]
 290   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
 291   --enable-libndi_newtek   enable Newteck NDI I/O support [no]
 292   --enable-mediacodec      enable Android MediaCodec support [no]
 293   --enable-libmysofa       enable libmysofa, needed for sofalizer filter [no]
 294   --enable-openal          enable OpenAL 1.1 capture support [no]
 295   --enable-opencl          enable OpenCL processing [no]
 296   --enable-opengl          enable OpenGL rendering [no]
 297   --enable-openssl         enable openssl, needed for https support
 298                            if gnutls or libtls is not used [no]
 299   --disable-sndio          disable sndio support [autodetect]
 300   --disable-schannel       disable SChannel SSP, needed for TLS support on
 301                            Windows if openssl and gnutls are not used [autodetect]
 302   --disable-sdl2           disable sdl2 [autodetect]
 303   --disable-securetransport disable Secure Transport, needed for TLS support
 304                            on OSX if openssl and gnutls are not used [autodetect]
 305   --disable-xlib           disable xlib [autodetect]
 306   --disable-zlib           disable zlib [autodetect]
 307
 308   The following libraries provide various hardware acceleration features:
 309   --disable-amf            disable AMF video encoding code [autodetect]
 310   --disable-audiotoolbox   disable Apple AudioToolbox code [autodetect]
 311   --enable-cuda-sdk        enable CUDA features that require the CUDA SDK [no]
 312   --disable-cuvid          disable Nvidia CUVID support [autodetect]
 313   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
 314   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
 315   --disable-ffnvcodec      disable dynamically linked Nvidia code [autodetect]
 316   --enable-libdrm          enable DRM code (Linux) [no]
 317   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
 318   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
 319   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
 320   --disable-nvdec          disable Nvidia video decoding acceleration (via hwaccel) [autodetect]
 321   --disable-nvenc          disable Nvidia video encoding code [autodetect]
 322   --enable-omx             enable OpenMAX IL code [no]
 323   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
 324   --enable-rkmpp           enable Rockchip Media Process Platform code [no]
 325   --disable-v4l2-m2m       disable V4L2 mem2mem code [autodetect]
 326   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
 327   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
 328   --disable-videotoolbox   disable VideoToolbox code [autodetect]
 329
 330 Toolchain options:
 331   --arch=ARCH              select architecture [$arch]
 332   --cpu=CPU                select the minimum required CPU (affects
 333                            instruction selection, may crash on older CPUs)
 334   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 335   --progs-suffix=SUFFIX    program name suffix []
 336   --enable-cross-compile   assume a cross-compiler is used
 337   --sysroot=PATH           root of cross-build tree
 338   --sysinclude=PATH        location of cross-build system headers
 339   --target-os=OS           compiler targets OS [$target_os]
 340   --target-exec=CMD        command to run executables on target
 341   --target-path=DIR        path to view of build directory on target
 342   --target-samples=DIR     path to samples directory on target
 343   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 344   --toolchain=NAME         set tool defaults according to NAME
 345   --nm=NM                  use nm tool NM [$nm_default]
 346   --ar=AR                  use archive tool AR [$ar_default]
 347   --as=AS                  use assembler AS [$as_default]
 348   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
 349   --strip=STRIP            use strip tool STRIP [$strip_default]
 350   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 351   --x86asmexe=EXE          use nasm-compatible assembler EXE [$x86asmexe_default]
 352   --cc=CC                  use C compiler CC [$cc_default]
 353   --cxx=CXX                use C compiler CXX [$cxx_default]
 354   --objcc=OCC              use ObjC compiler OCC [$cc_default]
 355   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 356   --nvcc=NVCC              use Nvidia CUDA compiler NVCC [$nvcc_default]
 357   --ld=LD                  use linker LD [$ld_default]
 358   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 359   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 360   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 361   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
 362   --host-cc=HOSTCC         use host C compiler HOSTCC
 363   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 364   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 365   --host-ld=HOSTLD         use host linker HOSTLD
 366   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 367   --host-libs=HLIBS        use libs HLIBS when linking for host
 368   --host-os=OS             compiler host OS [$target_os]
 369   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 370   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 371   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
 372   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 373   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 374   --extra-ldsoflags=ELDFLAGS add ELDFLAGS to LDSOFLAGS [$LDSOFLAGS]
 375   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 376   --extra-version=STRING   version string suffix []
 377   --optflags=OPTFLAGS      override optimization-related compiler flags
 378   --nvccflags=NVCCFLAGS    override nvcc flags [$nvccflags_default]
 379   --build-suffix=SUFFIX    library name suffix []
 380   --enable-pic             build position-independent code
 381   --enable-thumb           compile for Thumb instruction set
 382   --enable-lto             use link-time optimization
 383   --env="ENV=override"     override the environment variables
 384
 385 Advanced options (experts only):
 386   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 387   --custom-allocator=NAME  use a supported custom allocator
 388   --disable-symver         disable symbol versioning
 389   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 390   --disable-safe-bitstream-reader
 391                            disable buffer boundary checking in bitreaders
 392                            (faster, but may crash)
 393   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
 394
 395 Optimization options (experts only):
 396   --disable-asm            disable all assembly optimizations
 397   --disable-altivec        disable AltiVec optimizations
 398   --disable-vsx            disable VSX optimizations
 399   --disable-power8         disable POWER8 optimizations
 400   --disable-amd3dnow       disable 3DNow! optimizations
 401   --disable-amd3dnowext    disable 3DNow! extended optimizations
 402   --disable-mmx            disable MMX optimizations
 403   --disable-mmxext         disable MMXEXT optimizations
 404   --disable-sse            disable SSE optimizations
 405   --disable-sse2           disable SSE2 optimizations
 406   --disable-sse3           disable SSE3 optimizations
 407   --disable-ssse3          disable SSSE3 optimizations
 408   --disable-sse4           disable SSE4 optimizations
 409   --disable-sse42          disable SSE4.2 optimizations
 410   --disable-avx            disable AVX optimizations
 411   --disable-xop            disable XOP optimizations
 412   --disable-fma3           disable FMA3 optimizations
 413   --disable-fma4           disable FMA4 optimizations
 414   --disable-avx2           disable AVX2 optimizations
 415   --disable-avx512         disable AVX-512 optimizations
 416   --disable-aesni          disable AESNI optimizations
 417   --disable-armv5te        disable armv5te optimizations
 418   --disable-armv6          disable armv6 optimizations
 419   --disable-armv6t2        disable armv6t2 optimizations
 420   --disable-vfp            disable VFP optimizations
 421   --disable-neon           disable NEON optimizations
 422   --disable-inline-asm     disable use of inline assembly
 423   --disable-x86asm         disable use of standalone x86 assembly
 424   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
 425   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 426   --disable-msa            disable MSA optimizations
 427   --disable-mipsfpu        disable floating point MIPS optimizations
 428   --disable-mmi            disable Loongson SIMD optimizations
 429   --disable-fast-unaligned consider unaligned accesses slow
 430
 431 Developer options (useful when working on FFmpeg itself):
 432   --disable-debug          disable debugging symbols
 433   --enable-debug=LEVEL     set the debug level [$debuglevel]
 434   --disable-optimizations  disable compiler optimizations
 435   --enable-extra-warnings  enable more compiler warnings
 436   --disable-stripping      disable stripping of executables and shared libraries
 437   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 438                            2 causes a slowdown at runtime.
 439   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 440   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 441                            leaks and errors, using the specified valgrind binary.
 442                            Cannot be combined with --target-exec
 443   --enable-ftrapv          Trap arithmetic overflows
 444   --samples=PATH           location of test samples for FATE, if not set use
 445                            \$FATE_SAMPLES at make invocation time.
 446   --enable-neon-clobber-test check NEON registers for clobbering (should be
 447                            used only for debugging purposes)
 448   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 449                            should be used only for debugging purposes)
 450   --enable-random          randomly enable/disable components
 451   --disable-random
 452   --enable-random=LIST     randomly enable/disable specific components or
 453   --disable-random=LIST    component groups. LIST is a comma-separated list
 454                            of NAME[:PROB] entries where NAME is a component
 455                            (group) and PROB the probability associated with
 456                            NAME (default 0.5).
 457   --random-seed=VALUE      seed value for --enable/disable-random
 458   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 459                            (only applies to --disable-optimizations builds)
 460   --enable-osfuzz          Enable building fuzzer tool
 461   --libfuzzer=PATH         path to libfuzzer
 462   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
 463                            in the name) of tests whose result is ignored
 464   --enable-linux-perf      enable Linux Performance Monitor API
 465
 466 NOTE: Object files are built at the place where configure is launched.
 467 EOF
 468   exit 0
 469 }
 470
 471 if test -t 1 && which tput >/dev/null 2>&1; then
 472     ncolors=$(tput colors)
 473     if test -n "$ncolors" && test $ncolors -ge 8; then
 474         bold_color=$(tput bold)
 475         warn_color=$(tput setaf 3)
 476         error_color=$(tput setaf 1)
 477         reset_color=$(tput sgr0)
 478     fi
 479     # 72 used instead of 80 since that's the default of pr
 480     ncols=$(tput cols)
 481 fi
 482 : ${ncols:=72}
 483
 484 log(){
 485     echo "$@" >> $logfile
 486 }
 487
 488 log_file(){
 489     log BEGIN $1
 490     pr -n -t $1 >> $logfile
 491     log END $1
 492 }
 493
 494 warn(){
 495     log "WARNING: $*"
 496     WARNINGS="${WARNINGS}WARNING: $*\n"
 497 }
 498
 499 die(){
 500     log "$@"
 501     echo "$error_color$bold_color$@$reset_color"
 502     cat <<EOF
 503
 504 If you think configure made a mistake, make sure you are using the latest
 505 version from Git.  If the latest version fails, report the problem to the
 506 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 507 EOF
 508     if disabled logging; then
 509         cat <<EOF
 510 Rerun configure with logging enabled (do not use --disable-logging), and
 511 include the log this produces with your report.
 512 EOF
 513     else
 514         cat <<EOF
 515 Include the log file "$logfile" produced by configure as this will help
 516 solve the problem.
 517 EOF
 518     fi
 519     exit 1
 520 }
 521
 522 # Avoid locale weirdness, besides we really just want to translate ASCII.
 523 toupper(){
 524     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 525 }
 526
 527 tolower(){
 528     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 529 }
 530
 531 c_escape(){
 532     echo "$*" | sed 's/["\\]/\\\0/g'
 533 }
 534
 535 sh_quote(){
 536     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 537     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 538     echo "$v"
 539 }
 540
 541 cleanws(){
 542     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
 543 }
 544
 545 filter(){
 546     pat=$1
 547     shift
 548     for v; do
 549         eval "case '$v' in $pat) printf '%s ' '$v' ;; esac"
 550     done
 551 }
 552
 553 filter_out(){
 554     pat=$1
 555     shift
 556     for v; do
 557         eval "case '$v' in $pat) ;; *) printf '%s ' '$v' ;; esac"
 558     done
 559 }
 560
 561 map(){
 562     m=$1
 563     shift
 564     for v; do eval $m; done
 565 }
 566
 567 add_suffix(){
 568     suffix=$1
 569     shift
 570     for v; do echo ${v}${suffix}; done
 571 }
 572
 573 remove_suffix(){
 574     suffix=$1
 575     shift
 576     for v; do echo ${v%$suffix}; done
 577 }
 578
 579 set_all(){
 580     value=$1
 581     shift
 582     for var in $*; do
 583         eval $var=$value
 584     done
 585 }
 586
 587 set_weak(){
 588     value=$1
 589     shift
 590     for var; do
 591         eval : \${$var:=$value}
 592     done
 593 }
 594
 595 sanitize_var_name(){
 596     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 597 }
 598
 599 set_sanitized(){
 600     var=$1
 601     shift
 602     eval $(sanitize_var_name "$var")='$*'
 603 }
 604
 605 get_sanitized(){
 606     eval echo \$$(sanitize_var_name "$1")
 607 }
 608
 609 pushvar(){
 610     for pvar in $*; do
 611         eval level=\${${pvar}_level:=0}
 612         eval ${pvar}_${level}="\$$pvar"
 613         eval ${pvar}_level=$(($level+1))
 614     done
 615 }
 616
 617 popvar(){
 618     for pvar in $*; do
 619         eval level=\${${pvar}_level:-0}
 620         test $level = 0 && continue
 621         eval level=$(($level-1))
 622         eval $pvar="\${${pvar}_${level}}"
 623         eval ${pvar}_level=$level
 624         eval unset ${pvar}_${level}
 625     done
 626 }
 627
 628 request(){
 629     for var in $*; do
 630         eval ${var}_requested=yes
 631         eval $var=
 632     done
 633 }
 634
 635 enable(){
 636     set_all yes $*
 637 }
 638
 639 disable(){
 640     set_all no $*
 641 }
 642
 643 enable_weak(){
 644     set_weak yes $*
 645 }
 646
 647 disable_weak(){
 648     set_weak no $*
 649 }
 650
 651 enable_sanitized(){
 652     for var; do
 653         enable $(sanitize_var_name $var)
 654     done
 655 }
 656
 657 disable_sanitized(){
 658     for var; do
 659         disable $(sanitize_var_name $var)
 660     done
 661 }
 662
 663 do_enable_deep(){
 664     for var; do
 665         enabled $var && continue
 666         eval sel="\$${var}_select"
 667         eval sgs="\$${var}_suggest"
 668         pushvar var sgs
 669         enable_deep $sel
 670         popvar sgs
 671         enable_deep_weak $sgs
 672         popvar var
 673     done
 674 }
 675
 676 enable_deep(){
 677     do_enable_deep $*
 678     enable $*
 679 }
 680
 681 enable_deep_weak(){
 682     for var; do
 683         disabled $var && continue
 684         pushvar var
 685         do_enable_deep $var
 686         popvar var
 687         enable_weak $var
 688     done
 689 }
 690
 691 requested(){
 692     test "${1#!}" = "$1" && op="=" || op="!="
 693     eval test "x\$${1#!}_requested" $op "xyes"
 694 }
 695
 696 enabled(){
 697     test "${1#!}" = "$1" && op="=" || op="!="
 698     eval test "x\$${1#!}" $op "xyes"
 699 }
 700
 701 disabled(){
 702     test "${1#!}" = "$1" && op="=" || op="!="
 703     eval test "x\$${1#!}" $op "xno"
 704 }
 705
 706 enabled_all(){
 707     for opt; do
 708         enabled $opt || return 1
 709     done
 710 }
 711
 712 disabled_all(){
 713     for opt; do
 714         disabled $opt || return 1
 715     done
 716 }
 717
 718 enabled_any(){
 719     for opt; do
 720         enabled $opt && return 0
 721     done
 722 }
 723
 724 disabled_any(){
 725     for opt; do
 726         disabled $opt && return 0
 727     done
 728     return 1
 729 }
 730
 731 set_default(){
 732     for opt; do
 733         eval : \${$opt:=\$${opt}_default}
 734     done
 735 }
 736
 737 is_in(){
 738     value=$1
 739     shift
 740     for var in $*; do
 741         [ $var = $value ] && return 0
 742     done
 743     return 1
 744 }
 745
 746 check_deps(){
 747     for cfg; do
 748         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 749         disabled ${cfg}_checking && continue
 750         enable ${cfg}_checking
 751
 752         eval dep_all="\$${cfg}_deps"
 753         eval dep_any="\$${cfg}_deps_any"
 754         eval dep_con="\$${cfg}_conflict"
 755         eval dep_sel="\$${cfg}_select"
 756         eval dep_sgs="\$${cfg}_suggest"
 757         eval dep_ifa="\$${cfg}_if"
 758         eval dep_ifn="\$${cfg}_if_any"
 759
 760         pushvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
 761         check_deps $dep_all $dep_any $dep_con $dep_sel $dep_sgs $dep_ifa $dep_ifn
 762         popvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
 763
 764         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 765         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 766         enabled_all  $dep_all || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not all dependencies are satisfied: $dep_all"; }
 767         enabled_any  $dep_any || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not any dependency is satisfied: $dep_any"; }
 768         disabled_all $dep_con || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some conflicting dependencies are unsatisfied: $dep_con"; }
 769         disabled_any $dep_sel && { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some selected dependency is unsatisfied: $dep_sel"; }
 770
 771         enabled $cfg && enable_deep_weak $dep_sel $dep_sgs
 772
 773         for dep in $dep_all $dep_any $dep_sel $dep_sgs; do
 774             # filter out library deps, these do not belong in extralibs
 775             is_in $dep $LIBRARY_LIST && continue
 776             enabled $dep && eval append ${cfg}_extralibs ${dep}_extralibs
 777         done
 778
 779         disable ${cfg}_checking
 780     done
 781 }
 782
 783 print_config(){
 784     pfx=$1
 785     files=$2
 786     shift 2
 787     map 'eval echo "$v \${$v:-no}"' "$@" |
 788     awk "BEGIN { split(\"$files\", files) }
 789         {
 790             c = \"$pfx\" toupper(\$1);
 791             v = \$2;
 792             sub(/yes/, 1, v);
 793             sub(/no/,  0, v);
 794             for (f in files) {
 795                 file = files[f];
 796                 if (file ~ /\\.h\$/) {
 797                     printf(\"#define %s %d\\n\", c, v) >>file;
 798                 } else if (file ~ /\\.asm\$/) {
 799                     printf(\"%%define %s %d\\n\", c, v) >>file;
 800                 } else if (file ~ /\\.mak\$/) {
 801                     n = -v ? \"\" : \"!\";
 802                     printf(\"%s%s=yes\\n\", n, c) >>file;
 803                 } else if (file ~ /\\.texi\$/) {
 804                     pre = -v ? \"\" : \"@c \";
 805                     yesno = \$2;
 806                     c2 = tolower(c);
 807                     gsub(/_/, \"-\", c2);
 808                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 809                 }
 810             }
 811         }"
 812 }
 813
 814 print_enabled(){
 815     suf=$1
 816     shift
 817     for v; do
 818         enabled $v && printf "%s\n" ${v%$suf}
 819     done
 820 }
 821
 822 append(){
 823     var=$1
 824     shift
 825     eval "$var=\"\$$var $*\""
 826 }
 827
 828 prepend(){
 829     var=$1
 830     shift
 831     eval "$var=\"$* \$$var\""
 832 }
 833
 834 unique(){
 835     var=$1
 836     uniq_list=""
 837     for tok in $(eval echo \$$var); do
 838         uniq_list="$(filter_out $tok $uniq_list) $tok"
 839     done
 840     eval "$var=\"${uniq_list}\""
 841 }
 842
 843 resolve(){
 844     var=$1
 845     tmpvar=
 846     for entry in $(eval echo \$$var); do
 847         tmpvar="$tmpvar $(eval echo \$${entry})"
 848     done
 849     eval "$var=\"${tmpvar}\""
 850 }
 851
 852 add_cppflags(){
 853     append CPPFLAGS "$@"
 854 }
 855
 856 add_cflags(){
 857     append CFLAGS $($cflags_filter "$@")
 858 }
 859
 860 add_cflags_headers(){
 861     append CFLAGS_HEADERS $($cflags_filter "$@")
 862 }
 863
 864 add_cxxflags(){
 865     append CXXFLAGS $($cflags_filter "$@")
 866 }
 867
 868 add_asflags(){
 869     append ASFLAGS $($asflags_filter "$@")
 870 }
 871
 872 add_objcflags(){
 873     append OBJCFLAGS $($objcflags_filter "$@")
 874 }
 875
 876 add_ldflags(){
 877     append LDFLAGS $($ldflags_filter "$@")
 878 }
 879
 880 add_ldexeflags(){
 881     append LDEXEFLAGS $($ldflags_filter "$@")
 882 }
 883
 884 add_ldsoflags(){
 885     append LDSOFLAGS $($ldflags_filter "$@")
 886 }
 887
 888 add_stripflags(){
 889     append ASMSTRIPFLAGS "$@"
 890 }
 891
 892 add_extralibs(){
 893     prepend extralibs $($ldflags_filter "$@")
 894 }
 895
 896 add_host_cppflags(){
 897     append host_cppflags "$@"
 898 }
 899
 900 add_host_cflags(){
 901     append host_cflags $($host_cflags_filter "$@")
 902 }
 903
 904 add_host_ldflags(){
 905     append host_ldflags $($host_ldflags_filter "$@")
 906 }
 907
 908 add_compat(){
 909     append compat_objs $1
 910     shift
 911     map 'add_cppflags -D$v' "$@"
 912 }
 913
 914 test_cmd(){
 915     log "$@"
 916     "$@" >> $logfile 2>&1
 917 }
 918
 919 test_stat(){
 920     log test_stat "$@"
 921     stat "$1" >> $logfile 2>&1
 922 }
 923
 924 cc_o(){
 925     eval printf '%s\\n' $CC_O
 926 }
 927
 928 cc_e(){
 929     eval printf '%s\\n' $CC_E
 930 }
 931
 932 test_cc(){
 933     log test_cc "$@"
 934     cat > $TMPC
 935     log_file $TMPC
 936     test_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 937 }
 938
 939 test_cxx(){
 940     log test_cxx "$@"
 941     cat > $TMPCPP
 942     log_file $TMPCPP
 943     test_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
 944 }
 945
 946 test_objcc(){
 947     log test_objcc "$@"
 948     cat > $TMPM
 949     log_file $TMPM
 950     test_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
 951 }
 952
 953 test_cpp(){
 954     log test_cpp "$@"
 955     cat > $TMPC
 956     log_file $TMPC
 957     test_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 958 }
 959
 960 as_o(){
 961     eval printf '%s\\n' $AS_O
 962 }
 963
 964 test_as(){
 965     log test_as "$@"
 966     cat > $TMPS
 967     log_file $TMPS
 968     test_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 969 }
 970
 971 check_cmd(){
 972     log check_cmd "$@"
 973     cmd=$1
 974     disabled $cmd && return
 975     disable $cmd
 976     test_cmd $@ && enable $cmd
 977 }
 978
 979 check_as(){
 980     log check_as "$@"
 981     name=$1
 982     code=$2
 983     shift 2
 984     disable $name
 985     test_as $@ <<EOF && enable $name
 986 $code
 987 EOF
 988 }
 989
 990 check_inline_asm(){
 991     log check_inline_asm "$@"
 992     name="$1"
 993     code="$2"
 994     shift 2
 995     disable $name
 996     test_cc "$@" <<EOF && enable $name
 997 void foo(void){ __asm__ volatile($code); }
 998 EOF
 999 }
1000
1001 check_inline_asm_flags(){
1002     log check_inline_asm_flags "$@"
1003     name="$1"
1004     code="$2"
1005     flags=''
1006     shift 2
1007     while [ "$1" != "" ]; do
1008       append flags $1
1009       shift
1010     done;
1011     disable $name
1012     cat > $TMPC <<EOF
1013 void foo(void){ __asm__ volatile($code); }
1014 EOF
1015     log_file $TMPC
1016     test_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
1017     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
1018 }
1019
1020 check_insn(){
1021     log check_insn "$@"
1022     check_inline_asm ${1}_inline "$2"
1023     check_as ${1}_external "$2"
1024 }
1025
1026 test_x86asm(){
1027     log test_x86asm "$@"
1028     echo "$1" > $TMPS
1029     log_file $TMPS
1030     shift 1
1031     test_cmd $x86asmexe $X86ASMFLAGS -Werror "$@" -o $TMPO $TMPS
1032 }
1033
1034 ld_o(){
1035     eval printf '%s\\n' $LD_O
1036 }
1037
1038 test_ld(){
1039     log test_ld "$@"
1040     type=$1
1041     shift 1
1042     flags=$(filter_out '-l*|*.so' $@)
1043     libs=$(filter '-l*|*.so' $@)
1044     test_$type $($cflags_filter $flags) || return
1045     flags=$($ldflags_filter $flags)
1046     libs=$($ldflags_filter $libs)
1047     test_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
1048 }
1049
1050 check_ld(){
1051     log check_ld "$@"
1052     type=$1
1053     name=$2
1054     shift 2
1055     disable $name
1056     test_ld $type $@ && enable $name
1057 }
1058
1059 print_include(){
1060     hdr=$1
1061     test "${hdr%.h}" = "${hdr}" &&
1062         echo "#include $hdr"    ||
1063         echo "#include <$hdr>"
1064 }
1065
1066 test_code(){
1067     log test_code "$@"
1068     check=$1
1069     headers=$2
1070     code=$3
1071     shift 3
1072     {
1073         for hdr in $headers; do
1074             print_include $hdr
1075         done
1076         echo "int main(void) { $code; return 0; }"
1077     } | test_$check "$@"
1078 }
1079
1080 check_cppflags(){
1081     log check_cppflags "$@"
1082     test_cpp "$@" <<EOF && append CPPFLAGS "$@"
1083 #include <stdlib.h>
1084 EOF
1085 }
1086
1087 test_cflags(){
1088     log test_cflags "$@"
1089     set -- $($cflags_filter "$@")
1090     test_cc "$@" <<EOF
1091 int x;
1092 EOF
1093 }
1094
1095 check_cflags(){
1096     log check_cflags "$@"
1097     test_cflags "$@" && add_cflags "$@"
1098 }
1099
1100 check_cxxflags(){
1101     log check_cxxflags "$@"
1102     set -- $($cflags_filter "$@")
1103     test_cxx "$@" <<EOF && append CXXFLAGS "$@"
1104 int x;
1105 EOF
1106 }
1107
1108 test_objcflags(){
1109     log test_objcflags "$@"
1110     set -- $($objcflags_filter "$@")
1111     test_objcc "$@" <<EOF
1112 int x;
1113 EOF
1114 }
1115
1116 check_objcflags(){
1117     log check_objcflags "$@"
1118     test_objcflags "$@" && add_objcflags "$@"
1119 }
1120
1121 test_ldflags(){
1122     log test_ldflags "$@"
1123     set -- $($ldflags_filter "$@")
1124     test_ld "cc" "$@" <<EOF
1125 int main(void){ return 0; }
1126 EOF
1127 }
1128
1129 check_ldflags(){
1130     log check_ldflags "$@"
1131     test_ldflags "$@" && add_ldflags "$@"
1132 }
1133
1134 test_stripflags(){
1135     log test_stripflags "$@"
1136     # call test_cc to get a fresh TMPO
1137     test_cc <<EOF
1138 int main(void) { return 0; }
1139 EOF
1140     test_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1141 }
1142
1143 check_stripflags(){
1144     log check_stripflags "$@"
1145     test_stripflags "$@" && add_stripflags "$@"
1146 }
1147
1148 check_header(){
1149     log check_header "$@"
1150     headers=$1
1151     shift
1152     disable_sanitized $headers
1153     {
1154         for hdr in $headers; do
1155             print_include $hdr
1156         done
1157         echo "int x;"
1158     } | test_cpp "$@" && enable_sanitized $headers
1159 }
1160
1161 check_header_objcc(){
1162     log check_header_objcc "$@"
1163     rm -f -- "$TMPO"
1164     header=$1
1165     shift
1166     disable_sanitized $header
1167     {
1168        echo "#include <$header>"
1169        echo "int main(void) { return 0; }"
1170     } | test_objcc && test_stat "$TMPO" && enable_sanitized $header
1171 }
1172
1173 check_apple_framework(){
1174     log check_apple_framework "$@"
1175     framework="$1"
1176     name="$(tolower $framework)"
1177     header="${framework}/${framework}.h"
1178     disable $name
1179     check_header_objcc $header &&
1180         enable $name && eval ${name}_extralibs='"-framework $framework"'
1181 }
1182
1183 check_func(){
1184     log check_func "$@"
1185     func=$1
1186     shift
1187     disable $func
1188     test_ld "cc" "$@" <<EOF && enable $func
1189 extern int $func();
1190 int main(void){ $func(); }
1191 EOF
1192 }
1193
1194 check_complexfunc(){
1195     log check_complexfunc "$@"
1196     func=$1
1197     narg=$2
1198     shift 2
1199     test $narg = 2 && args="f, g" || args="f * I"
1200     disable $func
1201     test_ld "cc" "$@" <<EOF && enable $func
1202 #include <complex.h>
1203 #include <math.h>
1204 float foo(complex float f, complex float g) { return $func($args); }
1205 int main(void){ return (int) foo; }
1206 EOF
1207 }
1208
1209 check_mathfunc(){
1210     log check_mathfunc "$@"
1211     func=$1
1212     narg=$2
1213     shift 2
1214     test $narg = 2 && args="f, g" || args="f"
1215     disable $func
1216     test_ld "cc" "$@" <<EOF && enable $func
1217 #include <math.h>
1218 float foo(float f, float g) { return $func($args); }
1219 int main(void){ return (int) foo; }
1220 EOF
1221 }
1222
1223 check_func_headers(){
1224     log check_func_headers "$@"
1225     headers=$1
1226     funcs=$2
1227     shift 2
1228     {
1229         for hdr in $headers; do
1230             print_include $hdr
1231         done
1232         echo "#include <stdint.h>"
1233         for func in $funcs; do
1234             echo "long check_$func(void) { return (long) $func; }"
1235         done
1236         echo "int main(void) { int ret = 0;"
1237         # LTO could optimize out the test functions without this
1238         for func in $funcs; do
1239             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1240         done
1241         echo "return ret; }"
1242     } | test_ld "cc" "$@" && enable $funcs && enable_sanitized $headers
1243 }
1244
1245 check_class_headers_cpp(){
1246     log check_class_headers_cpp "$@"
1247     headers=$1
1248     classes=$2
1249     shift 2
1250     {
1251         for hdr in $headers; do
1252             echo "#include <$hdr>"
1253         done
1254         echo "int main(void) { "
1255         i=1
1256         for class in $classes; do
1257             echo "$class obj$i;"
1258             i=$(expr $i + 1)
1259         done
1260         echo "return 0; }"
1261     } | test_ld "cxx" "$@" && enable $funcs && enable_sanitized $headers
1262 }
1263
1264 test_cpp_condition(){
1265     log test_cpp_condition "$@"
1266     header=$1
1267     condition=$2
1268     shift 2
1269     test_cpp "$@" <<EOF
1270 #include <$header>
1271 #if !($condition)
1272 #error "unsatisfied condition: $condition"
1273 #endif
1274 EOF
1275 }
1276
1277 check_cpp_condition(){
1278     log check_cpp_condition "$@"
1279     name=$1
1280     shift 1
1281     disable $name
1282     test_cpp_condition "$@" && enable $name
1283 }
1284
1285 test_cflags_cc(){
1286     log test_cflags_cc "$@"
1287     flags=$1
1288     header=$2
1289     condition=$3
1290     shift 3
1291     set -- $($cflags_filter "$flags")
1292     test_cc "$@" <<EOF
1293 #include <$header>
1294 #if !($condition)
1295 #error "unsatisfied condition: $condition"
1296 #endif
1297 EOF
1298 }
1299
1300 check_lib(){
1301     log check_lib "$@"
1302     name="$1"
1303     headers="$2"
1304     funcs="$3"
1305     shift 3
1306     disable $name
1307     check_func_headers "$headers" "$funcs" "$@" &&
1308         enable $name && eval ${name}_extralibs="\$@"
1309 }
1310
1311 check_lib_cpp(){
1312     log check_lib_cpp "$@"
1313     name="$1"
1314     headers="$2"
1315     classes="$3"
1316     shift 3
1317     disable $name
1318     check_class_headers_cpp "$headers" "$classes" "$@" &&
1319         enable $name && eval ${name}_extralibs="\$@"
1320 }
1321
1322 test_pkg_config(){
1323     log test_pkg_config "$@"
1324     name="$1"
1325     pkg_version="$2"
1326     pkg="${2%% *}"
1327     headers="$3"
1328     funcs="$4"
1329     shift 4
1330     disable $name
1331     test_cmd $pkg_config --exists --print-errors $pkg_version || return
1332     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1333     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1334     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1335         enable $name &&
1336         set_sanitized "${name}_cflags"    $pkg_cflags &&
1337         set_sanitized "${name}_extralibs" $pkg_libs
1338 }
1339
1340 check_pkg_config(){
1341     log check_pkg_config "$@"
1342     name="$1"
1343     test_pkg_config "$@" &&
1344         eval add_cflags \$${name}_cflags
1345 }
1346
1347 test_exec(){
1348     test_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1349 }
1350
1351 check_exec_crash(){
1352     log check_exec_crash "$@"
1353     code=$(cat)
1354
1355     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1356     # are safe but may not be available everywhere.  Thus we use
1357     # raise(SIGTERM) instead.  The check is run in a subshell so we
1358     # can redirect the "Terminated" message from the shell.  SIGBUS
1359     # is not defined by standard C so it is used conditionally.
1360
1361     (test_exec "$@") >> $logfile 2>&1 <<EOF
1362 #include <signal.h>
1363 static void sighandler(int sig){
1364     raise(SIGTERM);
1365 }
1366 int foo(void){
1367     $code
1368 }
1369 int (*func_ptr)(void) = foo;
1370 int main(void){
1371     signal(SIGILL, sighandler);
1372     signal(SIGFPE, sighandler);
1373     signal(SIGSEGV, sighandler);
1374 #ifdef SIGBUS
1375     signal(SIGBUS, sighandler);
1376 #endif
1377     return func_ptr();
1378 }
1379 EOF
1380 }
1381
1382 check_type(){
1383     log check_type "$@"
1384     headers=$1
1385     type=$2
1386     shift 2
1387     disable_sanitized "$type"
1388     test_code cc "$headers" "$type v" "$@" && enable_sanitized "$type"
1389 }
1390
1391 check_struct(){
1392     log check_struct "$@"
1393     headers=$1
1394     struct=$2
1395     member=$3
1396     shift 3
1397     disable_sanitized "${struct}_${member}"
1398     test_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1399         enable_sanitized "${struct}_${member}"
1400 }
1401
1402 check_builtin(){
1403     log check_builtin "$@"
1404     name=$1
1405     headers=$2
1406     builtin=$3
1407     shift 3
1408     disable "$name"
1409     test_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1410 }
1411
1412 check_compile_assert(){
1413     log check_compile_assert "$@"
1414     name=$1
1415     headers=$2
1416     condition=$3
1417     shift 3
1418     disable "$name"
1419     test_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1420 }
1421
1422 check_cc(){
1423     log check_cc "$@"
1424     name=$1
1425     shift
1426     disable "$name"
1427     test_code cc "$@" && enable "$name"
1428 }
1429
1430 require(){
1431     log require "$@"
1432     name_version="$1"
1433     name="${1%% *}"
1434     shift
1435     check_lib $name "$@" || die "ERROR: $name_version not found"
1436 }
1437
1438 require_cc(){
1439     log require_cc "$@"
1440     name="$1"
1441     shift
1442     test_code cc "$@" || die "ERROR: $name failed"
1443 }
1444
1445 require_cpp(){
1446     name="$1"
1447     headers="$2"
1448     classes="$3"
1449     shift 3
1450     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1451 }
1452
1453 require_header(){
1454     log require_header "$@"
1455     headers="$1"
1456     check_header "$@" || die "ERROR: $headers not found"
1457 }
1458
1459 require_cpp_condition(){
1460     log require_cpp_condition "$@"
1461     condition="$2"
1462     test_cpp_condition "$@" || die "ERROR: $condition not satisfied"
1463 }
1464
1465 require_pkg_config(){
1466     log require_pkg_config "$@"
1467     pkg_version="$2"
1468     check_pkg_config "$@" || die "ERROR: $pkg_version not found using pkg-config$pkg_config_fail_message"
1469 }
1470
1471 hostcc_e(){
1472     eval printf '%s\\n' $HOSTCC_E
1473 }
1474
1475 hostcc_o(){
1476     eval printf '%s\\n' $HOSTCC_O
1477 }
1478
1479 test_host_cc(){
1480     log test_host_cc "$@"
1481     cat > $TMPC
1482     log_file $TMPC
1483     test_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1484 }
1485
1486 test_host_cpp(){
1487     log test_host_cpp "$@"
1488     cat > $TMPC
1489     log_file $TMPC
1490     test_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1491 }
1492
1493 check_host_cppflags(){
1494     log check_host_cppflags "$@"
1495     test_host_cpp "$@" <<EOF && append host_cppflags "$@"
1496 #include <stdlib.h>
1497 EOF
1498 }
1499
1500 check_host_cflags(){
1501     log check_host_cflags "$@"
1502     set -- $($host_cflags_filter "$@")
1503     test_host_cc "$@" <<EOF && append host_cflags "$@"
1504 int x;
1505 EOF
1506 }
1507
1508 test_host_cpp_condition(){
1509     log test_host_cpp_condition "$@"
1510     header=$1
1511     condition=$2
1512     shift 2
1513     test_host_cpp "$@" <<EOF
1514 #include <$header>
1515 #if !($condition)
1516 #error "unsatisfied condition: $condition"
1517 #endif
1518 EOF
1519 }
1520
1521 check_host_cpp_condition(){
1522     log check_host_cpp_condition "$@"
1523     name=$1
1524     shift 1
1525     disable $name
1526     test_host_cpp_condition "$@" && enable $name
1527 }
1528
1529 cp_if_changed(){
1530     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1531     mkdir -p "$(dirname $2)"
1532     cp -f "$1" "$2"
1533 }
1534
1535 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1536 # system-dependent things.
1537
1538 AVCODEC_COMPONENTS="
1539     bsfs
1540     decoders
1541     encoders
1542     hwaccels
1543     parsers
1544 "
1545
1546 AVDEVICE_COMPONENTS="
1547     indevs
1548     outdevs
1549 "
1550
1551 AVFILTER_COMPONENTS="
1552     filters
1553 "
1554
1555 AVFORMAT_COMPONENTS="
1556     demuxers
1557     muxers
1558     protocols
1559 "
1560
1561 COMPONENT_LIST="
1562     $AVCODEC_COMPONENTS
1563     $AVDEVICE_COMPONENTS
1564     $AVFILTER_COMPONENTS
1565     $AVFORMAT_COMPONENTS
1566 "
1567
1568 EXAMPLE_LIST="
1569     avio_dir_cmd_example
1570     avio_reading_example
1571     decode_audio_example
1572     decode_video_example
1573     demuxing_decoding_example
1574     encode_audio_example
1575     encode_video_example
1576     extract_mvs_example
1577     filter_audio_example
1578     filtering_audio_example
1579     filtering_video_example
1580     http_multiclient_example
1581     hw_decode_example
1582     metadata_example
1583     muxing_example
1584     qsvdec_example
1585     remuxing_example
1586     resampling_audio_example
1587     scaling_video_example
1588     transcode_aac_example
1589     transcoding_example
1590     vaapi_encode_example
1591     vaapi_transcode_example
1592 "
1593
1594 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1595     alsa
1596     appkit
1597     avfoundation
1598     bzlib
1599     coreimage
1600     iconv
1601     libxcb
1602     libxcb_shm
1603     libxcb_shape
1604     libxcb_xfixes
1605     lzma
1606     schannel
1607     sdl2
1608     securetransport
1609     sndio
1610     xlib
1611     zlib
1612 "
1613
1614 EXTERNAL_LIBRARY_GPL_LIST="
1615     avisynth
1616     frei0r
1617     libcdio
1618     librubberband
1619     libvidstab
1620     libx264
1621     libx265
1622     libxavs
1623     libxvid
1624 "
1625
1626 EXTERNAL_LIBRARY_NONFREE_LIST="
1627     decklink
1628     libndi_newtek
1629     libfdk_aac
1630     openssl
1631     libtls
1632 "
1633
1634 EXTERNAL_LIBRARY_VERSION3_LIST="
1635     gmp
1636     libopencore_amrnb
1637     libopencore_amrwb
1638     libvmaf
1639     libvo_amrwbenc
1640     rkmpp
1641 "
1642
1643 EXTERNAL_LIBRARY_GPLV3_LIST="
1644     libsmbclient
1645 "
1646
1647 EXTERNAL_LIBRARY_LIST="
1648     $EXTERNAL_LIBRARY_GPL_LIST
1649     $EXTERNAL_LIBRARY_NONFREE_LIST
1650     $EXTERNAL_LIBRARY_VERSION3_LIST
1651     $EXTERNAL_LIBRARY_GPLV3_LIST
1652     chromaprint
1653     gcrypt
1654     gnutls
1655     jni
1656     ladspa
1657     libaom
1658     libass
1659     libbluray
1660     libbs2b
1661     libcaca
1662     libcelt
1663     libcodec2
1664     libdc1394
1665     libdrm
1666     libflite
1667     libfontconfig
1668     libfreetype
1669     libfribidi
1670     libgme
1671     libgsm
1672     libiec61883
1673     libilbc
1674     libjack
1675     libkvazaar
1676     libmodplug
1677     libmp3lame
1678     libmysofa
1679     libopencv
1680     libopenh264
1681     libopenjpeg
1682     libopenmpt
1683     libopus
1684     libpulse
1685     librsvg
1686     librtmp
1687     libshine
1688     libsmbclient
1689     libsnappy
1690     libsoxr
1691     libspeex
1692     libssh
1693     libtesseract
1694     libtheora
1695     libtwolame
1696     libv4l2
1697     libvorbis
1698     libvpx
1699     libwavpack
1700     libwebp
1701     libxml2
1702     libzimg
1703     libzmq
1704     libzvbi
1705     lv2
1706     mediacodec
1707     openal
1708     opengl
1709 "
1710
1711 HWACCEL_AUTODETECT_LIBRARY_LIST="
1712     amf
1713     audiotoolbox
1714     crystalhd
1715     cuda
1716     cuvid
1717     d3d11va
1718     dxva2
1719     ffnvcodec
1720     nvdec
1721     nvenc
1722     vaapi
1723     vdpau
1724     videotoolbox
1725     v4l2_m2m
1726     xvmc
1727 "
1728
1729 # catchall list of things that require external libs to link
1730 EXTRALIBS_LIST="
1731     cpu_init
1732     cws2fws
1733 "
1734
1735 HWACCEL_LIBRARY_NONFREE_LIST="
1736     cuda_sdk
1737     libnpp
1738 "
1739
1740 HWACCEL_LIBRARY_LIST="
1741     $HWACCEL_LIBRARY_NONFREE_LIST
1742     libmfx
1743     mmal
1744     omx
1745     opencl
1746 "
1747
1748 DOCUMENT_LIST="
1749     doc
1750     htmlpages
1751     manpages
1752     podpages
1753     txtpages
1754 "
1755
1756 FEATURE_LIST="
1757     ftrapv
1758     gray
1759     hardcoded_tables
1760     omx_rpi
1761     runtime_cpudetect
1762     safe_bitstream_reader
1763     shared
1764     small
1765     static
1766     swscale_alpha
1767 "
1768
1769 LIBRARY_LIST="
1770     avcodec
1771     avdevice
1772     avfilter
1773     avformat
1774     avresample
1775     avutil
1776     postproc
1777     swresample
1778     swscale
1779 "
1780
1781 LICENSE_LIST="
1782     gpl
1783     nonfree
1784     version3
1785 "
1786
1787 PROGRAM_LIST="
1788     ffplay
1789     ffprobe
1790     ffmpeg
1791 "
1792
1793 SUBSYSTEM_LIST="
1794     dct
1795     dwt
1796     error_resilience
1797     faan
1798     fast_unaligned
1799     fft
1800     lsp
1801     lzo
1802     mdct
1803     pixelutils
1804     network
1805     rdft
1806 "
1807
1808 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1809 CONFIG_LIST="
1810     $DOCUMENT_LIST
1811     $EXAMPLE_LIST
1812     $EXTERNAL_LIBRARY_LIST
1813     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1814     $HWACCEL_LIBRARY_LIST
1815     $HWACCEL_AUTODETECT_LIBRARY_LIST
1816     $FEATURE_LIST
1817     $LICENSE_LIST
1818     $LIBRARY_LIST
1819     $PROGRAM_LIST
1820     $SUBSYSTEM_LIST
1821     autodetect
1822     fontconfig
1823     linux_perf
1824     memory_poisoning
1825     neon_clobber_test
1826     ossfuzz
1827     pic
1828     thumb
1829     valgrind_backtrace
1830     xmm_clobber_test
1831     $COMPONENT_LIST
1832 "
1833
1834 THREADS_LIST="
1835     pthreads
1836     os2threads
1837     w32threads
1838 "
1839
1840 ATOMICS_LIST="
1841     atomics_gcc
1842     atomics_suncc
1843     atomics_win32
1844 "
1845
1846 AUTODETECT_LIBS="
1847     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1848     $HWACCEL_AUTODETECT_LIBRARY_LIST
1849     $THREADS_LIST
1850 "
1851
1852 ARCH_LIST="
1853     aarch64
1854     alpha
1855     arm
1856     avr32
1857     avr32_ap
1858     avr32_uc
1859     bfin
1860     ia64
1861     m68k
1862     mips
1863     mips64
1864     parisc
1865     ppc
1866     ppc64
1867     s390
1868     sh4
1869     sparc
1870     sparc64
1871     tilegx
1872     tilepro
1873     tomi
1874     x86
1875     x86_32
1876     x86_64
1877 "
1878
1879 ARCH_EXT_LIST_ARM="
1880     armv5te
1881     armv6
1882     armv6t2
1883     armv8
1884     neon
1885     vfp
1886     vfpv3
1887     setend
1888 "
1889
1890 ARCH_EXT_LIST_MIPS="
1891     mipsfpu
1892     mips32r2
1893     mips32r5
1894     mips64r2
1895     mips32r6
1896     mips64r6
1897     mipsdsp
1898     mipsdspr2
1899     msa
1900 "
1901
1902 ARCH_EXT_LIST_LOONGSON="
1903     loongson2
1904     loongson3
1905     mmi
1906 "
1907
1908 ARCH_EXT_LIST_X86_SIMD="
1909     aesni
1910     amd3dnow
1911     amd3dnowext
1912     avx
1913     avx2
1914     avx512
1915     fma3
1916     fma4
1917     mmx
1918     mmxext
1919     sse
1920     sse2
1921     sse3
1922     sse4
1923     sse42
1924     ssse3
1925     xop
1926 "
1927
1928 ARCH_EXT_LIST_PPC="
1929     altivec
1930     dcbzl
1931     ldbrx
1932     power8
1933     ppc4xx
1934     vsx
1935 "
1936
1937 ARCH_EXT_LIST_X86="
1938     $ARCH_EXT_LIST_X86_SIMD
1939     cpunop
1940     i686
1941 "
1942
1943 ARCH_EXT_LIST="
1944     $ARCH_EXT_LIST_ARM
1945     $ARCH_EXT_LIST_PPC
1946     $ARCH_EXT_LIST_X86
1947     $ARCH_EXT_LIST_MIPS
1948     $ARCH_EXT_LIST_LOONGSON
1949 "
1950
1951 ARCH_FEATURES="
1952     aligned_stack
1953     fast_64bit
1954     fast_clz
1955     fast_cmov
1956     local_aligned
1957     simd_align_16
1958     simd_align_32
1959     simd_align_64
1960 "
1961
1962 BUILTIN_LIST="
1963     atomic_cas_ptr
1964     machine_rw_barrier
1965     MemoryBarrier
1966     mm_empty
1967     rdtsc
1968     sem_timedwait
1969     sync_val_compare_and_swap
1970 "
1971 HAVE_LIST_CMDLINE="
1972     inline_asm
1973     symver
1974     x86asm
1975 "
1976
1977 HAVE_LIST_PUB="
1978     bigendian
1979     fast_unaligned
1980 "
1981
1982 HEADERS_LIST="
1983     arpa_inet_h
1984     asm_types_h
1985     cdio_paranoia_h
1986     cdio_paranoia_paranoia_h
1987     cuda_h
1988     dispatch_dispatch_h
1989     dev_bktr_ioctl_bt848_h
1990     dev_bktr_ioctl_meteor_h
1991     dev_ic_bt8xx_h
1992     dev_video_bktr_ioctl_bt848_h
1993     dev_video_meteor_ioctl_meteor_h
1994     direct_h
1995     dirent_h
1996     dxgidebug_h
1997     dxva_h
1998     ES2_gl_h
1999     gsm_h
2000     io_h
2001     machine_ioctl_bt848_h
2002     machine_ioctl_meteor_h
2003     malloc_h
2004     opencv2_core_core_c_h
2005     OpenGL_gl3_h
2006     poll_h
2007     sys_param_h
2008     sys_resource_h
2009     sys_select_h
2010     sys_soundcard_h
2011     sys_time_h
2012     sys_un_h
2013     sys_videoio_h
2014     termios_h
2015     udplite_h
2016     unistd_h
2017     valgrind_valgrind_h
2018     windows_h
2019     winsock2_h
2020 "
2021
2022 INTRINSICS_LIST="
2023     intrinsics_neon
2024 "
2025
2026 COMPLEX_FUNCS="
2027     cabs
2028     cexp
2029 "
2030
2031 MATH_FUNCS="
2032     atanf
2033     atan2f
2034     cbrt
2035     cbrtf
2036     copysign
2037     cosf
2038     erf
2039     exp2
2040     exp2f
2041     expf
2042     hypot
2043     isfinite
2044     isinf
2045     isnan
2046     ldexpf
2047     llrint
2048     llrintf
2049     log2
2050     log2f
2051     log10f
2052     lrint
2053     lrintf
2054     powf
2055     rint
2056     round
2057     roundf
2058     sinf
2059     trunc
2060     truncf
2061 "
2062
2063 SYSTEM_FEATURES="
2064     dos_paths
2065     libc_msvcrt
2066     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2067     section_data_rel_ro
2068     threads
2069     uwp
2070     winrt
2071 "
2072
2073 SYSTEM_FUNCS="
2074     access
2075     aligned_malloc
2076     arc4random
2077     clock_gettime
2078     closesocket
2079     CommandLineToArgvW
2080     fcntl
2081     getaddrinfo
2082     gethrtime
2083     getopt
2084     GetProcessAffinityMask
2085     GetProcessMemoryInfo
2086     GetProcessTimes
2087     getrusage
2088     GetSystemTimeAsFileTime
2089     gettimeofday
2090     glob
2091     glXGetProcAddress
2092     gmtime_r
2093     inet_aton
2094     isatty
2095     kbhit
2096     localtime_r
2097     lstat
2098     lzo1x_999_compress
2099     mach_absolute_time
2100     MapViewOfFile
2101     memalign
2102     mkstemp
2103     mmap
2104     mprotect
2105     nanosleep
2106     PeekNamedPipe
2107     posix_memalign
2108     pthread_cancel
2109     sched_getaffinity
2110     SecItemImport
2111     SetConsoleTextAttribute
2112     SetConsoleCtrlHandler
2113     setmode
2114     setrlimit
2115     Sleep
2116     strerror_r
2117     sysconf
2118     sysctl
2119     usleep
2120     UTGetOSTypeFromString
2121     VirtualAlloc
2122     wglGetProcAddress
2123 "
2124
2125 SYSTEM_LIBRARIES="
2126     vaapi_drm
2127     vaapi_x11
2128     vdpau_x11
2129     wincrypt
2130 "
2131
2132 TOOLCHAIN_FEATURES="
2133     as_arch_directive
2134     as_fpu_directive
2135     as_func
2136     as_object_arch
2137     asm_mod_q
2138     blocks_extension
2139     ebp_available
2140     ebx_available
2141     gnu_as
2142     gnu_windres
2143     ibm_asm
2144     inline_asm_direct_symbol_refs
2145     inline_asm_labels
2146     inline_asm_nonlocal_labels
2147     pragma_deprecated
2148     rsync_contimeout
2149     symver_asm_label
2150     symver_gnu_asm
2151     vfp_args
2152     xform_asm
2153     xmm_clobbers
2154 "
2155
2156 TYPES_LIST="
2157     kCMVideoCodecType_HEVC
2158     socklen_t
2159     struct_addrinfo
2160     struct_group_source_req
2161     struct_ip_mreq_source
2162     struct_ipv6_mreq
2163     struct_msghdr_msg_flags
2164     struct_pollfd
2165     struct_rusage_ru_maxrss
2166     struct_sctp_event_subscribe
2167     struct_sockaddr_in6
2168     struct_sockaddr_sa_len
2169     struct_sockaddr_storage
2170     struct_stat_st_mtim_tv_nsec
2171     struct_v4l2_frmivalenum_discrete
2172 "
2173
2174 HAVE_LIST="
2175     $ARCH_EXT_LIST
2176     $(add_suffix _external $ARCH_EXT_LIST)
2177     $(add_suffix _inline   $ARCH_EXT_LIST)
2178     $ARCH_FEATURES
2179     $BUILTIN_LIST
2180     $COMPLEX_FUNCS
2181     $HAVE_LIST_CMDLINE
2182     $HAVE_LIST_PUB
2183     $HEADERS_LIST
2184     $INTRINSICS_LIST
2185     $MATH_FUNCS
2186     $SYSTEM_FEATURES
2187     $SYSTEM_FUNCS
2188     $SYSTEM_LIBRARIES
2189     $THREADS_LIST
2190     $TOOLCHAIN_FEATURES
2191     $TYPES_LIST
2192     makeinfo
2193     makeinfo_html
2194     opencl_d3d11
2195     opencl_drm_arm
2196     opencl_drm_beignet
2197     opencl_dxva2
2198     opencl_vaapi_beignet
2199     opencl_vaapi_intel_media
2200     perl
2201     pod2man
2202     texi2html
2203 "
2204
2205 # options emitted with CONFIG_ prefix but not available on the command line
2206 CONFIG_EXTRA="
2207     aandcttables
2208     ac3dsp
2209     adts_header
2210     audio_frame_queue
2211     audiodsp
2212     blockdsp
2213     bswapdsp
2214     cabac
2215     cbs
2216     cbs_h264
2217     cbs_h265
2218     cbs_mpeg2
2219     dirac_parse
2220     dvprofile
2221     exif
2222     faandct
2223     faanidct
2224     fdctdsp
2225     flacdsp
2226     fmtconvert
2227     frame_thread_encoder
2228     g722dsp
2229     golomb
2230     gplv3
2231     h263dsp
2232     h264chroma
2233     h264dsp
2234     h264parse
2235     h264pred
2236     h264qpel
2237     hevcparse
2238     hpeldsp
2239     huffman
2240     huffyuvdsp
2241     huffyuvencdsp
2242     idctdsp
2243     iirfilter
2244     mdct15
2245     intrax8
2246     iso_media
2247     ividsp
2248     jpegtables
2249     lgplv3
2250     libx262
2251     llauddsp
2252     llviddsp
2253     llvidencdsp
2254     lpc
2255     lzf
2256     me_cmp
2257     mpeg_er
2258     mpegaudio
2259     mpegaudiodsp
2260     mpegaudioheader
2261     mpegvideo
2262     mpegvideoenc
2263     mss34dsp
2264     pixblockdsp
2265     qpeldsp
2266     qsv
2267     qsvdec
2268     qsvenc
2269     qsvvpp
2270     rangecoder
2271     riffdec
2272     riffenc
2273     rtpdec
2274     rtpenc_chain
2275     rv34dsp
2276     sinewin
2277     snappy
2278     srtp
2279     startcode
2280     texturedsp
2281     texturedspenc
2282     tpeldsp
2283     vaapi_1
2284     vaapi_encode
2285     vc1dsp
2286     videodsp
2287     vp3dsp
2288     vp56dsp
2289     vp8dsp
2290     wma_freqs
2291     wmv2dsp
2292 "
2293
2294 CMDLINE_SELECT="
2295     $ARCH_EXT_LIST
2296     $CONFIG_LIST
2297     $HAVE_LIST_CMDLINE
2298     $THREADS_LIST
2299     asm
2300     cross_compile
2301     debug
2302     extra_warnings
2303     logging
2304     lto
2305     optimizations
2306     rpath
2307     stripping
2308 "
2309
2310 PATHS_LIST="
2311     bindir
2312     datadir
2313     docdir
2314     incdir
2315     libdir
2316     mandir
2317     pkgconfigdir
2318     prefix
2319     shlibdir
2320     install_name_dir
2321 "
2322
2323 CMDLINE_SET="
2324     $PATHS_LIST
2325     ar
2326     arch
2327     as
2328     assert_level
2329     build_suffix
2330     cc
2331     objcc
2332     cpu
2333     cross_prefix
2334     custom_allocator
2335     cxx
2336     dep_cc
2337     doxygen
2338     env
2339     extra_version
2340     gas
2341     host_cc
2342     host_cflags
2343     host_extralibs
2344     host_ld
2345     host_ldflags
2346     host_os
2347     ignore_tests
2348     install
2349     ld
2350     ln_s
2351     logfile
2352     malloc_prefix
2353     nm
2354     optflags
2355     nvccflags
2356     pkg_config
2357     pkg_config_flags
2358     progs_suffix
2359     random_seed
2360     ranlib
2361     samples
2362     strip
2363     sws_max_filter_size
2364     sysinclude
2365     sysroot
2366     target_exec
2367     target_os
2368     target_path
2369     target_samples
2370     tempprefix
2371     toolchain
2372     valgrind
2373     x86asmexe
2374 "
2375
2376 CMDLINE_APPEND="
2377     extra_cflags
2378     extra_cxxflags
2379     extra_objcflags
2380     host_cppflags
2381 "
2382
2383 # code dependency declarations
2384
2385 # architecture extensions
2386
2387 armv5te_deps="arm"
2388 armv6_deps="arm"
2389 armv6t2_deps="arm"
2390 armv8_deps="aarch64"
2391 neon_deps_any="aarch64 arm"
2392 intrinsics_neon_deps="neon"
2393 vfp_deps_any="aarch64 arm"
2394 vfpv3_deps="vfp"
2395 setend_deps="arm"
2396
2397 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2398
2399 altivec_deps="ppc"
2400 dcbzl_deps="ppc"
2401 ldbrx_deps="ppc"
2402 ppc4xx_deps="ppc"
2403 vsx_deps="altivec"
2404 power8_deps="vsx"
2405
2406 loongson2_deps="mips"
2407 loongson3_deps="mips"
2408 mips32r2_deps="mips"
2409 mips32r5_deps="mips"
2410 mips32r6_deps="mips"
2411 mips64r2_deps="mips"
2412 mips64r6_deps="mips"
2413 mipsfpu_deps="mips"
2414 mipsdsp_deps="mips"
2415 mipsdspr2_deps="mips"
2416 mmi_deps="mips"
2417 msa_deps="mipsfpu"
2418
2419 cpunop_deps="i686"
2420 x86_64_select="i686"
2421 x86_64_suggest="fast_cmov"
2422
2423 amd3dnow_deps="mmx"
2424 amd3dnowext_deps="amd3dnow"
2425 i686_deps="x86"
2426 mmx_deps="x86"
2427 mmxext_deps="mmx"
2428 sse_deps="mmxext"
2429 sse2_deps="sse"
2430 sse3_deps="sse2"
2431 ssse3_deps="sse3"
2432 sse4_deps="ssse3"
2433 sse42_deps="sse4"
2434 aesni_deps="sse42"
2435 avx_deps="sse42"
2436 xop_deps="avx"
2437 fma3_deps="avx"
2438 fma4_deps="avx"
2439 avx2_deps="avx"
2440 avx512_deps="avx2"
2441
2442 mmx_external_deps="x86asm"
2443 mmx_inline_deps="inline_asm x86"
2444 mmx_suggest="mmx_external mmx_inline"
2445
2446 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2447     eval dep=\$${ext}_deps
2448     eval ${ext}_external_deps='"${dep}_external"'
2449     eval ${ext}_inline_deps='"${dep}_inline"'
2450     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2451 done
2452
2453 aligned_stack_if_any="aarch64 ppc x86"
2454 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2455 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2456 fast_unaligned_if_any="aarch64 ppc x86"
2457 simd_align_16_if_any="altivec neon sse"
2458 simd_align_32_if_any="avx"
2459 simd_align_64_if_any="avx512"
2460
2461 # system capabilities
2462 symver_if_any="symver_asm_label symver_gnu_asm"
2463 valgrind_backtrace_conflict="optimizations"
2464 valgrind_backtrace_deps="valgrind_valgrind_h"
2465
2466 # threading support
2467 atomics_gcc_if="sync_val_compare_and_swap"
2468 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2469 atomics_win32_if="MemoryBarrier"
2470 atomics_native_if_any="$ATOMICS_LIST"
2471 w32threads_deps="atomics_native"
2472 threads_if_any="$THREADS_LIST"
2473
2474 # subsystems
2475 cbs_h264_select="cbs golomb"
2476 cbs_h265_select="cbs golomb"
2477 cbs_mpeg2_select="cbs"
2478 dct_select="rdft"
2479 dirac_parse_select="golomb"
2480 error_resilience_select="me_cmp"
2481 faandct_deps="faan"
2482 faandct_select="fdctdsp"
2483 faanidct_deps="faan"
2484 faanidct_select="idctdsp"
2485 h264dsp_select="startcode"
2486 hevcparse_select="golomb"
2487 frame_thread_encoder_deps="encoders threads"
2488 intrax8_select="blockdsp idctdsp"
2489 mdct_select="fft"
2490 mdct15_select="fft"
2491 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2492 mpeg_er_select="error_resilience"
2493 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2494 mpegaudiodsp_select="dct"
2495 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2496 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2497 vc1dsp_select="h264chroma qpeldsp startcode"
2498 rdft_select="fft"
2499
2500 # decoders / encoders
2501 aac_decoder_select="adts_header mdct15 mdct sinewin"
2502 aac_fixed_decoder_select="adts_header mdct sinewin"
2503 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2504 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2505 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2506 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2507 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2508 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2509 adpcm_g722_decoder_select="g722dsp"
2510 adpcm_g722_encoder_select="g722dsp"
2511 aic_decoder_select="golomb idctdsp"
2512 alac_encoder_select="lpc"
2513 als_decoder_select="bswapdsp"
2514 amrnb_decoder_select="lsp"
2515 amrwb_decoder_select="lsp"
2516 amv_decoder_select="sp5x_decoder exif"
2517 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2518 ape_decoder_select="bswapdsp llauddsp"
2519 apng_decoder_deps="zlib"
2520 apng_encoder_deps="zlib"
2521 apng_encoder_select="llvidencdsp"
2522 aptx_decoder_select="audio_frame_queue"
2523 aptx_encoder_select="audio_frame_queue"
2524 aptx_hd_decoder_select="audio_frame_queue"
2525 aptx_hd_encoder_select="audio_frame_queue"
2526 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2527 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2528 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2529 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2530 atrac1_decoder_select="mdct sinewin"
2531 atrac3_decoder_select="mdct"
2532 atrac3p_decoder_select="mdct sinewin"
2533 avrn_decoder_select="exif jpegtables"
2534 bink_decoder_select="blockdsp hpeldsp"
2535 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2536 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2537 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2538 clearvideo_decoder_select="idctdsp"
2539 cllc_decoder_select="bswapdsp"
2540 comfortnoise_encoder_select="lpc"
2541 cook_decoder_select="audiodsp mdct sinewin"
2542 cscd_decoder_select="lzo"
2543 cscd_decoder_suggest="zlib"
2544 dca_decoder_select="mdct"
2545 dds_decoder_select="texturedsp"
2546 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2547 dnxhd_decoder_select="blockdsp idctdsp"
2548 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2549 dolby_e_decoder_select="mdct"
2550 dvvideo_decoder_select="dvprofile idctdsp"
2551 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2552 dxa_decoder_deps="zlib"
2553 dxv_decoder_select="lzf texturedsp"
2554 eac3_decoder_select="ac3_decoder"
2555 eac3_encoder_select="ac3_encoder"
2556 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2557 eatgq_decoder_select="aandcttables"
2558 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2559 exr_decoder_deps="zlib"
2560 ffv1_decoder_select="rangecoder"
2561 ffv1_encoder_select="rangecoder"
2562 ffvhuff_decoder_select="huffyuv_decoder"
2563 ffvhuff_encoder_select="huffyuv_encoder"
2564 fic_decoder_select="golomb"
2565 flac_decoder_select="flacdsp"
2566 flac_encoder_select="bswapdsp flacdsp lpc"
2567 flashsv2_decoder_deps="zlib"
2568 flashsv2_encoder_deps="zlib"
2569 flashsv_decoder_deps="zlib"
2570 flashsv_encoder_deps="zlib"
2571 flv_decoder_select="h263_decoder"
2572 flv_encoder_select="h263_encoder"
2573 fourxm_decoder_select="blockdsp bswapdsp"
2574 fraps_decoder_select="bswapdsp huffman"
2575 g2m_decoder_deps="zlib"
2576 g2m_decoder_select="blockdsp idctdsp jpegtables"
2577 g729_decoder_select="audiodsp"
2578 h261_decoder_select="mpegvideo"
2579 h261_encoder_select="aandcttables mpegvideoenc"
2580 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2581 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2582 h263i_decoder_select="h263_decoder"
2583 h263p_decoder_select="h263_decoder"
2584 h263p_encoder_select="h263_encoder"
2585 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2586 h264_decoder_suggest="error_resilience"
2587 hap_decoder_select="snappy texturedsp"
2588 hap_encoder_deps="libsnappy"
2589 hap_encoder_select="texturedspenc"
2590 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2591 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2592 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2593 iac_decoder_select="imc_decoder"
2594 imc_decoder_select="bswapdsp fft mdct sinewin"
2595 indeo3_decoder_select="hpeldsp"
2596 indeo4_decoder_select="ividsp"
2597 indeo5_decoder_select="ividsp"
2598 interplay_video_decoder_select="hpeldsp"
2599 jpegls_decoder_select="mjpeg_decoder"
2600 jv_decoder_select="blockdsp"
2601 lagarith_decoder_select="llviddsp"
2602 ljpeg_encoder_select="aandcttables idctdsp jpegtables mpegvideoenc"
2603 magicyuv_decoder_select="llviddsp"
2604 magicyuv_encoder_select="llvidencdsp"
2605 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2606 metasound_decoder_select="lsp mdct sinewin"
2607 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2608 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2609 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2610 mjpegb_decoder_select="mjpeg_decoder"
2611 mlp_decoder_select="mlp_parser"
2612 mlp_encoder_select="lpc"
2613 motionpixels_decoder_select="bswapdsp"
2614 mp1_decoder_select="mpegaudio"
2615 mp1float_decoder_select="mpegaudio"
2616 mp2_decoder_select="mpegaudio"
2617 mp2float_decoder_select="mpegaudio"
2618 mp3_decoder_select="mpegaudio"
2619 mp3adu_decoder_select="mpegaudio"
2620 mp3adufloat_decoder_select="mpegaudio"
2621 mp3float_decoder_select="mpegaudio"
2622 mp3on4_decoder_select="mpegaudio"
2623 mp3on4float_decoder_select="mpegaudio"
2624 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2625 mpc8_decoder_select="mpegaudiodsp"
2626 mpegvideo_decoder_select="mpegvideo"
2627 mpeg1video_decoder_select="mpegvideo"
2628 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2629 mpeg2video_decoder_select="mpegvideo"
2630 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2631 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2632 mpeg4_encoder_select="h263_encoder"
2633 msa1_decoder_select="mss34dsp"
2634 mscc_decoder_deps="zlib"
2635 msmpeg4v1_decoder_select="h263_decoder"
2636 msmpeg4v2_decoder_select="h263_decoder"
2637 msmpeg4v2_encoder_select="h263_encoder"
2638 msmpeg4v3_decoder_select="h263_decoder"
2639 msmpeg4v3_encoder_select="h263_encoder"
2640 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2641 mts2_decoder_select="mss34dsp"
2642 mxpeg_decoder_select="mjpeg_decoder"
2643 nellymoser_decoder_select="mdct sinewin"
2644 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2645 nuv_decoder_select="idctdsp lzo"
2646 on2avc_decoder_select="mdct"
2647 opus_decoder_deps="swresample"
2648 opus_decoder_select="mdct15"
2649 opus_encoder_select="audio_frame_queue mdct15"
2650 png_decoder_deps="zlib"
2651 png_encoder_deps="zlib"
2652 png_encoder_select="llvidencdsp"
2653 prores_decoder_select="blockdsp idctdsp"
2654 prores_encoder_select="fdctdsp"
2655 qcelp_decoder_select="lsp"
2656 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2657 ra_144_decoder_select="audiodsp"
2658 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2659 ralf_decoder_select="golomb"
2660 rawvideo_decoder_select="bswapdsp"
2661 rscc_decoder_deps="zlib"
2662 rtjpeg_decoder_select="me_cmp"
2663 rv10_decoder_select="h263_decoder"
2664 rv10_encoder_select="h263_encoder"
2665 rv20_decoder_select="h263_decoder"
2666 rv20_encoder_select="h263_encoder"
2667 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2668 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2669 screenpresso_decoder_deps="zlib"
2670 shorten_decoder_select="bswapdsp"
2671 sipr_decoder_select="lsp"
2672 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2673 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2674 sonic_decoder_select="golomb rangecoder"
2675 sonic_encoder_select="golomb rangecoder"
2676 sonic_ls_encoder_select="golomb rangecoder"
2677 sp5x_decoder_select="mjpeg_decoder"
2678 srgc_decoder_deps="zlib"
2679 svq1_decoder_select="hpeldsp"
2680 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2681 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2682 svq3_decoder_suggest="zlib"
2683 tak_decoder_select="audiodsp"
2684 tdsc_decoder_deps="zlib"
2685 tdsc_decoder_select="mjpeg_decoder"
2686 theora_decoder_select="vp3_decoder"
2687 thp_decoder_select="mjpeg_decoder"
2688 tiff_decoder_suggest="zlib lzma"
2689 tiff_encoder_suggest="zlib"
2690 truehd_decoder_select="mlp_parser"
2691 truehd_encoder_select="lpc"
2692 truemotion2_decoder_select="bswapdsp"
2693 truespeech_decoder_select="bswapdsp"
2694 tscc_decoder_deps="zlib"
2695 twinvq_decoder_select="mdct lsp sinewin"
2696 txd_decoder_select="texturedsp"
2697 utvideo_decoder_select="bswapdsp llviddsp"
2698 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2699 vble_decoder_select="llviddsp"
2700 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2701 vc1image_decoder_select="vc1_decoder"
2702 vorbis_decoder_select="mdct"
2703 vorbis_encoder_select="audio_frame_queue mdct"
2704 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2705 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2706 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2707 vp6a_decoder_select="vp6_decoder"
2708 vp6f_decoder_select="vp6_decoder"
2709 vp7_decoder_select="h264pred videodsp vp8dsp"
2710 vp8_decoder_select="h264pred videodsp vp8dsp"
2711 vp9_decoder_select="videodsp vp9_parser vp9_superframe_split_bsf"
2712 webp_decoder_select="vp8_decoder exif"
2713 wmalossless_decoder_select="llauddsp"
2714 wmapro_decoder_select="mdct sinewin wma_freqs"
2715 wmav1_decoder_select="mdct sinewin wma_freqs"
2716 wmav1_encoder_select="mdct sinewin wma_freqs"
2717 wmav2_decoder_select="mdct sinewin wma_freqs"
2718 wmav2_encoder_select="mdct sinewin wma_freqs"
2719 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2720 wmv1_decoder_select="h263_decoder"
2721 wmv1_encoder_select="h263_encoder"
2722 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2723 wmv2_encoder_select="h263_encoder wmv2dsp"
2724 wmv3_decoder_select="vc1_decoder"
2725 wmv3image_decoder_select="wmv3_decoder"
2726 xma1_decoder_select="wmapro_decoder"
2727 xma2_decoder_select="wmapro_decoder"
2728 zerocodec_decoder_deps="zlib"
2729 zlib_decoder_deps="zlib"
2730 zlib_encoder_deps="zlib"
2731 zmbv_decoder_deps="zlib"
2732 zmbv_encoder_deps="zlib"
2733
2734 # hardware accelerators
2735 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2736 cuda_deps="ffnvcodec"
2737 cuvid_deps="ffnvcodec"
2738 d3d11va_deps="dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2739 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32 user32"
2740 ffnvcodec_deps_any="libdl LoadLibrary"
2741 nvdec_deps="ffnvcodec"
2742 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2743 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2744 xvmc_deps="X11_extensions_XvMClib_h"
2745
2746 h263_vaapi_hwaccel_deps="vaapi"
2747 h263_vaapi_hwaccel_select="h263_decoder"
2748 h263_videotoolbox_hwaccel_deps="videotoolbox"
2749 h263_videotoolbox_hwaccel_select="h263_decoder"
2750 h264_d3d11va_hwaccel_deps="d3d11va"
2751 h264_d3d11va_hwaccel_select="h264_decoder"
2752 h264_d3d11va2_hwaccel_deps="d3d11va"
2753 h264_d3d11va2_hwaccel_select="h264_decoder"
2754 h264_dxva2_hwaccel_deps="dxva2"
2755 h264_dxva2_hwaccel_select="h264_decoder"
2756 h264_nvdec_hwaccel_deps="nvdec"
2757 h264_nvdec_hwaccel_select="h264_decoder"
2758 h264_vaapi_hwaccel_deps="vaapi"
2759 h264_vaapi_hwaccel_select="h264_decoder"
2760 h264_vdpau_hwaccel_deps="vdpau"
2761 h264_vdpau_hwaccel_select="h264_decoder"
2762 h264_videotoolbox_hwaccel_deps="videotoolbox"
2763 h264_videotoolbox_hwaccel_select="h264_decoder"
2764 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2765 hevc_d3d11va_hwaccel_select="hevc_decoder"
2766 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2767 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2768 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2769 hevc_dxva2_hwaccel_select="hevc_decoder"
2770 hevc_nvdec_hwaccel_deps="nvdec"
2771 hevc_nvdec_hwaccel_select="hevc_decoder"
2772 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2773 hevc_vaapi_hwaccel_select="hevc_decoder"
2774 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2775 hevc_vdpau_hwaccel_select="hevc_decoder"
2776 hevc_videotoolbox_hwaccel_deps="videotoolbox"
2777 hevc_videotoolbox_hwaccel_select="hevc_decoder"
2778 mjpeg_nvdec_hwaccel_deps="nvdec"
2779 mjpeg_nvdec_hwaccel_select="mjpeg_decoder"
2780 mjpeg_vaapi_hwaccel_deps="vaapi"
2781 mjpeg_vaapi_hwaccel_select="mjpeg_decoder"
2782 mpeg_xvmc_hwaccel_deps="xvmc"
2783 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2784 mpeg1_nvdec_hwaccel_deps="nvdec"
2785 mpeg1_nvdec_hwaccel_select="mpeg1video_decoder"
2786 mpeg1_vdpau_hwaccel_deps="vdpau"
2787 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2788 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2789 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2790 mpeg1_xvmc_hwaccel_deps="xvmc"
2791 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2792 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2793 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2794 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2795 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2796 mpeg2_dxva2_hwaccel_deps="dxva2"
2797 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2798 mpeg2_nvdec_hwaccel_deps="nvdec"
2799 mpeg2_nvdec_hwaccel_select="mpeg2video_decoder"
2800 mpeg2_vaapi_hwaccel_deps="vaapi"
2801 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2802 mpeg2_vdpau_hwaccel_deps="vdpau"
2803 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2804 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2805 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2806 mpeg2_xvmc_hwaccel_deps="xvmc"
2807 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2808 mpeg4_nvdec_hwaccel_deps="nvdec"
2809 mpeg4_nvdec_hwaccel_select="mpeg4_decoder"
2810 mpeg4_vaapi_hwaccel_deps="vaapi"
2811 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2812 mpeg4_vdpau_hwaccel_deps="vdpau"
2813 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2814 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2815 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2816 vc1_d3d11va_hwaccel_deps="d3d11va"
2817 vc1_d3d11va_hwaccel_select="vc1_decoder"
2818 vc1_d3d11va2_hwaccel_deps="d3d11va"
2819 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2820 vc1_dxva2_hwaccel_deps="dxva2"
2821 vc1_dxva2_hwaccel_select="vc1_decoder"
2822 vc1_nvdec_hwaccel_deps="nvdec"
2823 vc1_nvdec_hwaccel_select="vc1_decoder"
2824 vc1_vaapi_hwaccel_deps="vaapi"
2825 vc1_vaapi_hwaccel_select="vc1_decoder"
2826 vc1_vdpau_hwaccel_deps="vdpau"
2827 vc1_vdpau_hwaccel_select="vc1_decoder"
2828 vp8_nvdec_hwaccel_deps="nvdec"
2829 vp8_nvdec_hwaccel_select="vp8_decoder"
2830 vp8_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferVP8"
2831 vp8_vaapi_hwaccel_select="vp8_decoder"
2832 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2833 vp9_d3d11va_hwaccel_select="vp9_decoder"
2834 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2835 vp9_d3d11va2_hwaccel_select="vp9_decoder"
2836 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2837 vp9_dxva2_hwaccel_select="vp9_decoder"
2838 vp9_nvdec_hwaccel_deps="nvdec"
2839 vp9_nvdec_hwaccel_select="vp9_decoder"
2840 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2841 vp9_vaapi_hwaccel_select="vp9_decoder"
2842 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2843 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2844 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2845 wmv3_nvdec_hwaccel_select="vc1_nvdec_hwaccel"
2846 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2847 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2848
2849 # hardware-accelerated codecs
2850 omx_deps="libdl pthreads"
2851 omx_rpi_select="omx"
2852 qsv_deps="libmfx"
2853 qsvdec_select="qsv"
2854 qsvenc_select="qsv"
2855 qsvvpp_select="qsv"
2856 vaapi_encode_deps="vaapi"
2857 v4l2_m2m_deps_any="linux_videodev2_h"
2858
2859 hwupload_cuda_filter_deps="ffnvcodec"
2860 scale_npp_filter_deps="ffnvcodec libnpp"
2861 scale_cuda_filter_deps="cuda_sdk"
2862 thumbnail_cuda_filter_deps="cuda_sdk"
2863
2864 amf_deps_any="libdl LoadLibrary"
2865 nvenc_deps="ffnvcodec"
2866 nvenc_deps_any="libdl LoadLibrary"
2867 nvenc_encoder_deps="nvenc"
2868
2869 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
2870 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
2871 h264_amf_encoder_deps="amf"
2872 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2873 h264_cuvid_decoder_deps="cuvid"
2874 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2875 h264_mediacodec_decoder_deps="mediacodec"
2876 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2877 h264_mmal_decoder_deps="mmal"
2878 h264_nvenc_encoder_deps="nvenc"
2879 h264_omx_encoder_deps="omx"
2880 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec"
2881 h264_qsv_encoder_select="qsvenc"
2882 h264_rkmpp_decoder_deps="rkmpp"
2883 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
2884 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2885 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
2886 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
2887 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
2888 hevc_amf_encoder_deps="amf"
2889 hevc_cuvid_decoder_deps="cuvid"
2890 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
2891 hevc_mediacodec_decoder_deps="mediacodec"
2892 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2893 hevc_nvenc_encoder_deps="nvenc"
2894 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec"
2895 hevc_qsv_encoder_select="hevcparse qsvenc"
2896 hevc_rkmpp_decoder_deps="rkmpp"
2897 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
2898 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2899 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
2900 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
2901 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
2902 mjpeg_cuvid_decoder_deps="cuvid"
2903 mjpeg_qsv_encoder_deps="libmfx"
2904 mjpeg_qsv_encoder_select="qsvenc"
2905 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2906 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2907 mpeg1_cuvid_decoder_deps="cuvid"
2908 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
2909 mpeg2_crystalhd_decoder_select="crystalhd"
2910 mpeg2_cuvid_decoder_deps="cuvid"
2911 mpeg2_mmal_decoder_deps="mmal"
2912 mpeg2_mediacodec_decoder_deps="mediacodec"
2913 mpeg2_qsv_decoder_select="qsvdec mpegvideo_parser"
2914 mpeg2_qsv_encoder_select="qsvenc"
2915 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2916 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
2917 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
2918 mpeg4_crystalhd_decoder_select="crystalhd"
2919 mpeg4_cuvid_decoder_deps="cuvid"
2920 mpeg4_mediacodec_decoder_deps="mediacodec"
2921 mpeg4_mmal_decoder_deps="mmal"
2922 mpeg4_omx_encoder_deps="omx"
2923 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2924 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2925 msmpeg4_crystalhd_decoder_select="crystalhd"
2926 nvenc_h264_encoder_select="h264_nvenc_encoder"
2927 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2928 vc1_crystalhd_decoder_select="crystalhd"
2929 vc1_cuvid_decoder_deps="cuvid"
2930 vc1_mmal_decoder_deps="mmal"
2931 vc1_qsv_decoder_select="qsvdec vc1_parser"
2932 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
2933 vp8_cuvid_decoder_deps="cuvid"
2934 vp8_mediacodec_decoder_deps="mediacodec"
2935 vp8_qsv_decoder_select="qsvdec vp8_parser"
2936 vp8_rkmpp_decoder_deps="rkmpp"
2937 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2938 vp8_vaapi_encoder_select="vaapi_encode"
2939 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
2940 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
2941 vp9_cuvid_decoder_deps="cuvid"
2942 vp9_mediacodec_decoder_deps="mediacodec"
2943 vp9_rkmpp_decoder_deps="rkmpp"
2944 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
2945 vp9_vaapi_encoder_select="vaapi_encode"
2946 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
2947 wmv3_crystalhd_decoder_select="crystalhd"
2948
2949 # parsers
2950 aac_parser_select="adts_header"
2951 h264_parser_select="golomb h264dsp h264parse"
2952 hevc_parser_select="hevcparse"
2953 mpegaudio_parser_select="mpegaudioheader"
2954 mpegvideo_parser_select="mpegvideo"
2955 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2956 vc1_parser_select="vc1dsp"
2957
2958 # bitstream_filters
2959 aac_adtstoasc_bsf_select="adts_header"
2960 filter_units_bsf_select="cbs"
2961 h264_metadata_bsf_deps="const_nan"
2962 h264_metadata_bsf_select="cbs_h264"
2963 h264_redundant_pps_bsf_select="cbs_h264"
2964 hevc_metadata_bsf_select="cbs_h265"
2965 mjpeg2jpeg_bsf_select="jpegtables"
2966 mpeg2_metadata_bsf_select="cbs_mpeg2"
2967 trace_headers_bsf_select="cbs"
2968
2969 # external libraries
2970 aac_at_decoder_deps="audiotoolbox"
2971 aac_at_decoder_select="aac_adtstoasc_bsf"
2972 ac3_at_decoder_deps="audiotoolbox"
2973 ac3_at_decoder_select="ac3_parser"
2974 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2975 alac_at_decoder_deps="audiotoolbox"
2976 amr_nb_at_decoder_deps="audiotoolbox"
2977 avisynth_deps_any="libdl LoadLibrary"
2978 avisynth_demuxer_deps="avisynth"
2979 avisynth_demuxer_select="riffdec"
2980 eac3_at_decoder_deps="audiotoolbox"
2981 eac3_at_decoder_select="ac3_parser"
2982 gsm_ms_at_decoder_deps="audiotoolbox"
2983 ilbc_at_decoder_deps="audiotoolbox"
2984 mp1_at_decoder_deps="audiotoolbox"
2985 mp2_at_decoder_deps="audiotoolbox"
2986 mp3_at_decoder_deps="audiotoolbox"
2987 mp1_at_decoder_select="mpegaudioheader"
2988 mp2_at_decoder_select="mpegaudioheader"
2989 mp3_at_decoder_select="mpegaudioheader"
2990 pcm_alaw_at_decoder_deps="audiotoolbox"
2991 pcm_mulaw_at_decoder_deps="audiotoolbox"
2992 qdmc_at_decoder_deps="audiotoolbox"
2993 qdm2_at_decoder_deps="audiotoolbox"
2994 aac_at_encoder_deps="audiotoolbox"
2995 aac_at_encoder_select="audio_frame_queue"
2996 alac_at_encoder_deps="audiotoolbox"
2997 alac_at_encoder_select="audio_frame_queue"
2998 ilbc_at_encoder_deps="audiotoolbox"
2999 ilbc_at_encoder_select="audio_frame_queue"
3000 pcm_alaw_at_encoder_deps="audiotoolbox"
3001 pcm_alaw_at_encoder_select="audio_frame_queue"
3002 pcm_mulaw_at_encoder_deps="audiotoolbox"
3003 pcm_mulaw_at_encoder_select="audio_frame_queue"
3004 chromaprint_muxer_deps="chromaprint"
3005 h264_videotoolbox_encoder_deps="pthreads"
3006 h264_videotoolbox_encoder_select="videotoolbox_encoder"
3007 hevc_videotoolbox_encoder_deps="pthreads"
3008 hevc_videotoolbox_encoder_select="videotoolbox_encoder"
3009 libaom_av1_decoder_deps="libaom"
3010 libcelt_decoder_deps="libcelt"
3011 libcodec2_decoder_deps="libcodec2"
3012 libcodec2_encoder_deps="libcodec2"
3013 libfdk_aac_decoder_deps="libfdk_aac"
3014 libfdk_aac_encoder_deps="libfdk_aac"
3015 libfdk_aac_encoder_select="audio_frame_queue"
3016 libgme_demuxer_deps="libgme"
3017 libgsm_decoder_deps="libgsm"
3018 libgsm_encoder_deps="libgsm"
3019 libgsm_ms_decoder_deps="libgsm"
3020 libgsm_ms_encoder_deps="libgsm"
3021 libilbc_decoder_deps="libilbc"
3022 libilbc_encoder_deps="libilbc"
3023 libkvazaar_encoder_deps="libkvazaar"
3024 libmodplug_demuxer_deps="libmodplug"
3025 libmp3lame_encoder_deps="libmp3lame"
3026 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
3027 libopencore_amrnb_decoder_deps="libopencore_amrnb"
3028 libopencore_amrnb_encoder_deps="libopencore_amrnb"
3029 libopencore_amrnb_encoder_select="audio_frame_queue"
3030 libopencore_amrwb_decoder_deps="libopencore_amrwb"
3031 libopenh264_decoder_deps="libopenh264"
3032 libopenh264_decoder_select="h264_mp4toannexb_bsf"
3033 libopenh264_encoder_deps="libopenh264"
3034 libopenjpeg_decoder_deps="libopenjpeg"
3035 libopenjpeg_encoder_deps="libopenjpeg"
3036 libopenmpt_demuxer_deps="libopenmpt"
3037 libopus_decoder_deps="libopus"
3038 libopus_encoder_deps="libopus"
3039 libopus_encoder_select="audio_frame_queue"
3040 librsvg_decoder_deps="librsvg"
3041 libshine_encoder_deps="libshine"
3042 libshine_encoder_select="audio_frame_queue"
3043 libspeex_decoder_deps="libspeex"
3044 libspeex_encoder_deps="libspeex"
3045 libspeex_encoder_select="audio_frame_queue"
3046 libtheora_encoder_deps="libtheora"
3047 libtwolame_encoder_deps="libtwolame"
3048 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
3049 libvorbis_decoder_deps="libvorbis"
3050 libvorbis_encoder_deps="libvorbis libvorbisenc"
3051 libvorbis_encoder_select="audio_frame_queue"
3052 libvpx_vp8_decoder_deps="libvpx"
3053 libvpx_vp8_encoder_deps="libvpx"
3054 libvpx_vp9_decoder_deps="libvpx"
3055 libvpx_vp9_encoder_deps="libvpx"
3056 libwavpack_encoder_deps="libwavpack"
3057 libwavpack_encoder_select="audio_frame_queue"
3058 libwebp_encoder_deps="libwebp"
3059 libwebp_anim_encoder_deps="libwebp"
3060 libx262_encoder_deps="libx262"
3061 libx264_encoder_deps="libx264"
3062 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
3063 libx264rgb_encoder_select="libx264_encoder"
3064 libx265_encoder_deps="libx265"
3065 libxavs_encoder_deps="libxavs"
3066 libxvid_encoder_deps="libxvid"
3067 libzvbi_teletext_decoder_deps="libzvbi"
3068 videotoolbox_suggest="coreservices"
3069 videotoolbox_deps="corefoundation coremedia corevideo"
3070 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
3071
3072 # demuxers / muxers
3073 ac3_demuxer_select="ac3_parser"
3074 aiff_muxer_select="iso_media"
3075 asf_demuxer_select="riffdec"
3076 asf_o_demuxer_select="riffdec"
3077 asf_muxer_select="riffenc"
3078 asf_stream_muxer_select="asf_muxer"
3079 avi_demuxer_select="iso_media riffdec exif"
3080 avi_muxer_select="riffenc"
3081 caf_demuxer_select="iso_media riffdec"
3082 caf_muxer_select="iso_media"
3083 dash_muxer_select="mp4_muxer"
3084 dash_demuxer_deps="libxml2"
3085 dirac_demuxer_select="dirac_parser"
3086 dts_demuxer_select="dca_parser"
3087 dtshd_demuxer_select="dca_parser"
3088 dv_demuxer_select="dvprofile"
3089 dv_muxer_select="dvprofile"
3090 dxa_demuxer_select="riffdec"
3091 eac3_demuxer_select="ac3_parser"
3092 f4v_muxer_select="mov_muxer"
3093 fifo_muxer_deps="threads"
3094 flac_demuxer_select="flac_parser"
3095 hds_muxer_select="flv_muxer"
3096 hls_muxer_select="mpegts_muxer"
3097 hls_muxer_suggest="gcrypt openssl"
3098 image2_alias_pix_demuxer_select="image2_demuxer"
3099 image2_brender_pix_demuxer_select="image2_demuxer"
3100 ipod_muxer_select="mov_muxer"
3101 ismv_muxer_select="mov_muxer"
3102 matroska_audio_muxer_select="matroska_muxer"
3103 matroska_demuxer_select="iso_media riffdec"
3104 matroska_demuxer_suggest="bzlib lzo zlib"
3105 matroska_muxer_select="iso_media riffenc"
3106 mmf_muxer_select="riffenc"
3107 mov_demuxer_select="iso_media riffdec"
3108 mov_demuxer_suggest="zlib"
3109 mov_muxer_select="iso_media riffenc rtpenc_chain"
3110 mp3_demuxer_select="mpegaudio_parser"
3111 mp3_muxer_select="mpegaudioheader"
3112 mp4_muxer_select="mov_muxer"
3113 mpegts_demuxer_select="iso_media"
3114 mpegts_muxer_select="adts_muxer latm_muxer"
3115 mpegtsraw_demuxer_select="mpegts_demuxer"
3116 mxf_d10_muxer_select="mxf_muxer"
3117 mxf_opatom_muxer_select="mxf_muxer"
3118 nut_muxer_select="riffenc"
3119 nuv_demuxer_select="riffdec"
3120 oga_muxer_select="ogg_muxer"
3121 ogg_demuxer_select="dirac_parse"
3122 ogv_muxer_select="ogg_muxer"
3123 opus_muxer_select="ogg_muxer"
3124 psp_muxer_select="mov_muxer"
3125 rtp_demuxer_select="sdp_demuxer"
3126 rtp_muxer_select="golomb"
3127 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3128 rtsp_demuxer_select="http_protocol rtpdec"
3129 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3130 sap_demuxer_select="sdp_demuxer"
3131 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3132 sdp_demuxer_select="rtpdec"
3133 smoothstreaming_muxer_select="ismv_muxer"
3134 spdif_demuxer_select="adts_header"
3135 spdif_muxer_select="adts_header"
3136 spx_muxer_select="ogg_muxer"
3137 swf_demuxer_suggest="zlib"
3138 tak_demuxer_select="tak_parser"
3139 tg2_muxer_select="mov_muxer"
3140 tgp_muxer_select="mov_muxer"
3141 vobsub_demuxer_select="mpegps_demuxer"
3142 w64_demuxer_select="wav_demuxer"
3143 w64_muxer_select="wav_muxer"
3144 wav_demuxer_select="riffdec"
3145 wav_muxer_select="riffenc"
3146 webm_muxer_select="iso_media riffenc"
3147 webm_dash_manifest_demuxer_select="matroska_demuxer"
3148 wtv_demuxer_select="mpegts_demuxer riffdec"
3149 wtv_muxer_select="mpegts_muxer riffenc"
3150 xmv_demuxer_select="riffdec"
3151 xwma_demuxer_select="riffdec"
3152
3153 # indevs / outdevs
3154 android_camera_indev_deps="android camera2ndk mediandk pthreads"
3155 android_camera_indev_extralibs="-landroid -lcamera2ndk -lmediandk"
3156 alsa_indev_deps="alsa"
3157 alsa_outdev_deps="alsa"
3158 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3159 avfoundation_indev_suggest="coregraphics applicationservices"
3160 avfoundation_indev_extralibs="-framework Foundation"
3161 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3162 caca_outdev_deps="libcaca"
3163 decklink_deps_any="libdl LoadLibrary"
3164 decklink_indev_deps="decklink threads"
3165 decklink_indev_extralibs="-lstdc++"
3166 decklink_outdev_deps="decklink threads"
3167 decklink_outdev_extralibs="-lstdc++"
3168 libndi_newtek_indev_deps="libndi_newtek"
3169 libndi_newtek_indev_extralibs="-lndi"
3170 libndi_newtek_outdev_deps="libndi_newtek"
3171 libndi_newtek_outdev_extralibs="-lndi"
3172 dshow_indev_deps="IBaseFilter"
3173 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3174 fbdev_indev_deps="linux_fb_h"
3175 fbdev_outdev_deps="linux_fb_h"
3176 gdigrab_indev_deps="CreateDIBSection"
3177 gdigrab_indev_extralibs="-lgdi32"
3178 gdigrab_indev_select="bmp_decoder"
3179 iec61883_indev_deps="libiec61883"
3180 jack_indev_deps="libjack"
3181 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3182 kmsgrab_indev_deps="libdrm"
3183 lavfi_indev_deps="avfilter"
3184 libcdio_indev_deps="libcdio"
3185 libdc1394_indev_deps="libdc1394"
3186 openal_indev_deps="openal"
3187 opengl_outdev_deps="opengl"
3188 oss_indev_deps_any="sys_soundcard_h"
3189 oss_outdev_deps_any="sys_soundcard_h"
3190 pulse_indev_deps="libpulse"
3191 pulse_outdev_deps="libpulse"
3192 sdl2_outdev_deps="sdl2"
3193 sndio_indev_deps="sndio"
3194 sndio_outdev_deps="sndio"
3195 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3196 v4l2_indev_suggest="libv4l2"
3197 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3198 v4l2_outdev_suggest="libv4l2"
3199 vfwcap_indev_deps="vfw32 vfwcap_defines"
3200 xcbgrab_indev_deps="libxcb"
3201 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3202 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
3203 xv_outdev_extralibs="-lXv -lX11 -lXext"
3204
3205 # protocols
3206 async_protocol_deps="threads"
3207 bluray_protocol_deps="libbluray"
3208 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3209 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
3210 ffrtmpcrypt_protocol_select="tcp_protocol"
3211 ffrtmphttp_protocol_conflict="librtmp_protocol"
3212 ffrtmphttp_protocol_select="http_protocol"
3213 ftp_protocol_select="tcp_protocol"
3214 gopher_protocol_select="network"
3215 http_protocol_select="tcp_protocol"
3216 http_protocol_suggest="zlib"
3217 httpproxy_protocol_select="tcp_protocol"
3218 httpproxy_protocol_suggest="zlib"
3219 https_protocol_select="tls_protocol"
3220 https_protocol_suggest="zlib"
3221 icecast_protocol_select="http_protocol"
3222 librtmp_protocol_deps="librtmp"
3223 librtmpe_protocol_deps="librtmp"
3224 librtmps_protocol_deps="librtmp"
3225 librtmpt_protocol_deps="librtmp"
3226 librtmpte_protocol_deps="librtmp"
3227 libsmbclient_protocol_deps="libsmbclient gplv3"
3228 libssh_protocol_deps="libssh"
3229 libtls_conflict="openssl gnutls"
3230 mmsh_protocol_select="http_protocol"
3231 mmst_protocol_select="network"
3232 rtmp_protocol_conflict="librtmp_protocol"
3233 rtmp_protocol_select="tcp_protocol"
3234 rtmp_protocol_suggest="zlib"
3235 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3236 rtmpe_protocol_suggest="zlib"
3237 rtmps_protocol_conflict="librtmp_protocol"
3238 rtmps_protocol_select="tls_protocol"
3239 rtmps_protocol_suggest="zlib"
3240 rtmpt_protocol_select="ffrtmphttp_protocol"
3241 rtmpt_protocol_suggest="zlib"
3242 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3243 rtmpte_protocol_suggest="zlib"
3244 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3245 rtmpts_protocol_suggest="zlib"
3246 rtp_protocol_select="udp_protocol"
3247 schannel_conflict="openssl gnutls libtls"
3248 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3249 sctp_protocol_select="network"
3250 securetransport_conflict="openssl gnutls libtls"
3251 srtp_protocol_select="rtp_protocol srtp"
3252 tcp_protocol_select="network"
3253 tls_protocol_deps_any="gnutls openssl schannel securetransport libtls"
3254 tls_protocol_select="tcp_protocol"
3255 udp_protocol_select="network"
3256 udplite_protocol_select="network"
3257 unix_protocol_deps="sys_un_h"
3258 unix_protocol_select="network"
3259
3260 # filters
3261 afftfilt_filter_deps="avcodec"
3262 afftfilt_filter_select="fft"
3263 afir_filter_deps="avcodec"
3264 afir_filter_select="fft"
3265 amovie_filter_deps="avcodec avformat"
3266 aresample_filter_deps="swresample"
3267 ass_filter_deps="libass"
3268 atempo_filter_deps="avcodec"
3269 atempo_filter_select="rdft"
3270 avgblur_opencl_filter_deps="opencl"
3271 azmq_filter_deps="libzmq"
3272 blackframe_filter_deps="gpl"
3273 boxblur_filter_deps="gpl"
3274 bs2b_filter_deps="libbs2b"
3275 colormatrix_filter_deps="gpl"
3276 convolution_opencl_filter_deps="opencl"
3277 convolve_filter_deps="avcodec"
3278 convolve_filter_select="fft"
3279 coreimage_filter_deps="coreimage appkit"
3280 coreimage_filter_extralibs="-framework OpenGL"
3281 coreimagesrc_filter_deps="coreimage appkit"
3282 coreimagesrc_filter_extralibs="-framework OpenGL"
3283 cover_rect_filter_deps="avcodec avformat gpl"
3284 cropdetect_filter_deps="gpl"
3285 deconvolve_filter_deps="avcodec"
3286 deconvolve_filter_select="fft"
3287 deinterlace_qsv_filter_deps="libmfx"
3288 deinterlace_vaapi_filter_deps="vaapi"
3289 delogo_filter_deps="gpl"
3290 denoise_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3291 deshake_filter_select="pixelutils"
3292 drawtext_filter_deps="libfreetype"
3293 drawtext_filter_suggest="libfontconfig libfribidi"
3294 elbg_filter_deps="avcodec"
3295 eq_filter_deps="gpl"
3296 fftfilt_filter_deps="avcodec"
3297 fftfilt_filter_select="rdft"
3298 find_rect_filter_deps="avcodec avformat gpl"
3299 firequalizer_filter_deps="avcodec"
3300 firequalizer_filter_select="rdft"
3301 flite_filter_deps="libflite"
3302 framerate_filter_select="pixelutils"
3303 frei0r_filter_deps="frei0r libdl"
3304 frei0r_src_filter_deps="frei0r libdl"
3305 fspp_filter_deps="gpl"
3306 geq_filter_deps="gpl"
3307 histeq_filter_deps="gpl"
3308 hqdn3d_filter_deps="gpl"
3309 interlace_filter_deps="gpl"
3310 kerndeint_filter_deps="gpl"
3311 ladspa_filter_deps="ladspa libdl"
3312 lv2_filter_deps="lv2"
3313 mcdeint_filter_deps="avcodec gpl"
3314 movie_filter_deps="avcodec avformat"
3315 mpdecimate_filter_deps="gpl"
3316 mpdecimate_filter_select="pixelutils"
3317 mptestsrc_filter_deps="gpl"
3318 negate_filter_deps="lut_filter"
3319 nnedi_filter_deps="gpl"
3320 ocr_filter_deps="libtesseract"
3321 ocv_filter_deps="libopencv"
3322 openclsrc_filter_deps="opencl"
3323 overlay_opencl_filter_deps="opencl"
3324 overlay_qsv_filter_deps="libmfx"
3325 overlay_qsv_filter_select="qsvvpp"
3326 owdenoise_filter_deps="gpl"
3327 pan_filter_deps="swresample"
3328 perspective_filter_deps="gpl"
3329 phase_filter_deps="gpl"
3330 pp7_filter_deps="gpl"
3331 pp_filter_deps="gpl postproc"
3332 procamp_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3333 program_opencl_filter_deps="opencl"
3334 pullup_filter_deps="gpl"
3335 removelogo_filter_deps="avcodec avformat swscale"
3336 repeatfields_filter_deps="gpl"
3337 resample_filter_deps="avresample"
3338 rubberband_filter_deps="librubberband"
3339 sab_filter_deps="gpl swscale"
3340 scale2ref_filter_deps="swscale"
3341 scale_filter_deps="swscale"
3342 scale_qsv_filter_deps="libmfx"
3343 select_filter_select="pixelutils"
3344 sharpness_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3345 showcqt_filter_deps="avcodec avformat swscale"
3346 showcqt_filter_suggest="libfontconfig libfreetype"
3347 showcqt_filter_select="fft"
3348 showfreqs_filter_deps="avcodec"
3349 showfreqs_filter_select="fft"
3350 showspectrum_filter_deps="avcodec"
3351 showspectrum_filter_select="fft"
3352 showspectrumpic_filter_deps="avcodec"
3353 showspectrumpic_filter_select="fft"
3354 signature_filter_deps="gpl avcodec avformat"
3355 smartblur_filter_deps="gpl swscale"
3356 sofalizer_filter_deps="libmysofa avcodec"
3357 sofalizer_filter_select="fft"
3358 spectrumsynth_filter_deps="avcodec"
3359 spectrumsynth_filter_select="fft"
3360 spp_filter_deps="gpl avcodec"
3361 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3362 stereo3d_filter_deps="gpl"
3363 subtitles_filter_deps="avformat avcodec libass"
3364 super2xsai_filter_deps="gpl"
3365 pixfmts_super2xsai_test_deps="super2xsai_filter"
3366 tinterlace_filter_deps="gpl"
3367 tinterlace_merge_test_deps="tinterlace_filter"
3368 tinterlace_pad_test_deps="tinterlace_filter"
3369 tonemap_filter_deps="const_nan"
3370 unsharp_opencl_filter_deps="opencl"
3371 uspp_filter_deps="gpl avcodec"
3372 vaguedenoiser_filter_deps="gpl"
3373 vidstabdetect_filter_deps="libvidstab"
3374 vidstabtransform_filter_deps="libvidstab"
3375 libvmaf_filter_deps="libvmaf pthreads"
3376 zmq_filter_deps="libzmq"
3377 zoompan_filter_deps="swscale"
3378 zscale_filter_deps="libzimg const_nan"
3379 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3380 vpp_qsv_filter_deps="libmfx"
3381 vpp_qsv_filter_select="qsvvpp"
3382
3383 # examples
3384 avio_dir_cmd_deps="avformat avutil"
3385 avio_reading_deps="avformat avcodec avutil"
3386 decode_audio_example_deps="avcodec avutil"
3387 decode_video_example_deps="avcodec avutil"
3388 demuxing_decoding_example_deps="avcodec avformat avutil"
3389 encode_audio_example_deps="avcodec avutil"
3390 encode_video_example_deps="avcodec avutil"
3391 extract_mvs_example_deps="avcodec avformat avutil"
3392 filter_audio_example_deps="avfilter avutil"
3393 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3394 filtering_video_example_deps="avfilter avcodec avformat avutil"
3395 http_multiclient_example_deps="avformat avutil fork"
3396 hw_decode_example_deps="avcodec avformat avutil"
3397 metadata_example_deps="avformat avutil"
3398 muxing_example_deps="avcodec avformat avutil swscale"
3399 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3400 remuxing_example_deps="avcodec avformat avutil"
3401 resampling_audio_example_deps="avutil swresample"
3402 scaling_video_example_deps="avutil swscale"
3403 transcode_aac_example_deps="avcodec avformat swresample"
3404 transcoding_example_deps="avfilter avcodec avformat avutil"
3405 vaapi_encode_example_deps="avcodec avutil h264_vaapi_encoder"
3406 vaapi_transcode_example_deps="avcodec avformat avutil h264_vaapi_encoder"
3407
3408 # EXTRALIBS_LIST
3409 cpu_init_extralibs="pthreads_extralibs"
3410 cws2fws_extralibs="zlib_extralibs"
3411
3412 # libraries, in linking order
3413 avcodec_deps="avutil"
3414 avcodec_suggest="libm"
3415 avcodec_select="null_bsf"
3416 avdevice_deps="avformat avcodec avutil"
3417 avdevice_suggest="libm"
3418 avfilter_deps="avutil"
3419 avfilter_suggest="libm"
3420 avformat_deps="avcodec avutil"
3421 avformat_suggest="libm network zlib"
3422 avresample_deps="avutil"
3423 avresample_suggest="libm"
3424 avutil_suggest="clock_gettime ffnvcodec libm libdrm libmfx opencl user32 vaapi videotoolbox corefoundation corevideo coremedia wincrypt"
3425 postproc_deps="avutil gpl"
3426 postproc_suggest="libm"
3427 swresample_deps="avutil"
3428 swresample_suggest="libm libsoxr"
3429 swscale_deps="avutil"
3430 swscale_suggest="libm"
3431
3432 avcodec_extralibs="pthreads_extralibs iconv_extralibs"
3433 avfilter_extralibs="pthreads_extralibs"
3434 avutil_extralibs="d3d11va_extralibs nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3435
3436 # programs
3437 ffmpeg_deps="avcodec avfilter avformat swresample"
3438 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3439                null_filter
3440                trim_filter"
3441 ffmpeg_suggest="ole32 psapi shell32"
3442 ffplay_deps="avcodec avformat swscale swresample sdl2"
3443 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3444 ffplay_suggest="shell32"
3445 ffprobe_deps="avcodec avformat"
3446 ffprobe_suggest="shell32"
3447
3448 # documentation
3449 podpages_deps="perl"
3450 manpages_deps="perl pod2man"
3451 htmlpages_deps="perl"
3452 htmlpages_deps_any="makeinfo_html texi2html"
3453 txtpages_deps="perl makeinfo"
3454 doc_deps_any="manpages htmlpages podpages txtpages"
3455
3456 # default parameters
3457
3458 logfile="ffbuild/config.log"
3459
3460 # installation paths
3461 prefix_default="/usr/local"
3462 bindir_default='${prefix}/bin'
3463 datadir_default='${prefix}/share/ffmpeg'
3464 docdir_default='${prefix}/share/doc/ffmpeg'
3465 incdir_default='${prefix}/include'
3466 libdir_default='${prefix}/lib'
3467 mandir_default='${prefix}/share/man'
3468
3469 # toolchain
3470 ar_default="ar"
3471 cc_default="gcc"
3472 cxx_default="g++"
3473 host_cc_default="gcc"
3474 doxygen_default="doxygen"
3475 install="install"
3476 ln_s_default="ln -s -f"
3477 nm_default="nm -g"
3478 pkg_config_default=pkg-config
3479 ranlib_default="ranlib"
3480 strip_default="strip"
3481 version_script='--version-script'
3482 objformat="elf32"
3483 x86asmexe_default="nasm"
3484 windres_default="windres"
3485 nvcc_default="nvcc"
3486 nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
3487 striptype="direct"
3488
3489 # OS
3490 target_os_default=$(tolower $(uname -s))
3491 host_os=$target_os_default
3492
3493 # machine
3494 if test "$target_os_default" = aix; then
3495     arch_default=$(uname -p)
3496     strip_default="strip -X32_64"
3497 else
3498     arch_default=$(uname -m)
3499 fi
3500 cpu="generic"
3501 intrinsics="none"
3502
3503 # configurable options
3504 enable $PROGRAM_LIST
3505 enable $DOCUMENT_LIST
3506 enable $EXAMPLE_LIST
3507 enable $(filter_out avresample $LIBRARY_LIST)
3508 enable stripping
3509
3510 enable asm
3511 enable debug
3512 enable doc
3513 enable faan faandct faanidct
3514 enable optimizations
3515 enable runtime_cpudetect
3516 enable safe_bitstream_reader
3517 enable static
3518 enable swscale_alpha
3519 enable valgrind_backtrace
3520
3521 sws_max_filter_size_default=256
3522 set_default sws_max_filter_size
3523
3524 # internal components are enabled by default
3525 enable $EXTRALIBS_LIST
3526
3527 # Avoid external, non-system, libraries getting enabled by dependency resolution
3528 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3529
3530 # build settings
3531 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3532 LIBPREF="lib"
3533 LIBSUF=".a"
3534 FULLNAME='$(NAME)$(BUILDSUF)'
3535 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3536 SLIBPREF="lib"
3537 SLIBSUF=".so"
3538 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3539 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3540 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3541 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3542 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3543 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3544 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3545
3546 asflags_filter=echo
3547 cflags_filter=echo
3548 ldflags_filter=echo
3549
3550 AS_C='-c'
3551 AS_O='-o $@'
3552 CC_C='-c'
3553 CC_E='-E -o $@'
3554 CC_O='-o $@'
3555 CXX_C='-c'
3556 CXX_O='-o $@'
3557 OBJCC_C='-c'
3558 OBJCC_E='-E -o $@'
3559 OBJCC_O='-o $@'
3560 X86ASM_O='-o $@'
3561 LD_O='-o $@'
3562 LD_LIB='-l%'
3563 LD_PATH='-L'
3564 HOSTCC_C='-c'
3565 HOSTCC_E='-E -o $@'
3566 HOSTCC_O='-o $@'
3567 HOSTLD_O='-o $@'
3568 NVCC_C='-c'
3569 NVCC_O='-o $@'
3570
3571 host_extralibs='-lm'
3572 host_cflags_filter=echo
3573 host_ldflags_filter=echo
3574
3575 target_path='$(CURDIR)'
3576
3577 # since the object filename is not given with the -MM flag, the compiler
3578 # is only able to print the basename, and we must add the path ourselves
3579 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3580 DEPFLAGS='-MM'
3581
3582 mkdir -p ffbuild
3583
3584 # find source path
3585 if test -f configure; then
3586     source_path=.
3587 else
3588     source_path=$(cd $(dirname "$0"); pwd)
3589     case "$source_path" in
3590         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3591     esac
3592     test -e "$source_path/config.h" &&
3593         die "Out of tree builds are impossible with config.h in source dir."
3594 fi
3595
3596 for v in "$@"; do
3597     r=${v#*=}
3598     l=${v%"$r"}
3599     r=$(sh_quote "$r")
3600     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3601 done
3602
3603 find_things(){
3604     thing=$1
3605     pattern=$2
3606     file=$source_path/$3
3607     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3608 }
3609
3610 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3611
3612 find_things_extern(){
3613     thing=$1
3614     pattern=$2
3615     file=$source_path/$3
3616     out=${4:-$thing}
3617     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$out/p" "$file"
3618 }
3619
3620 OUTDEV_LIST=$(find_things_extern muxer AVOutputFormat libavdevice/alldevices.c outdev)
3621 INDEV_LIST=$(find_things_extern demuxer AVInputFormat libavdevice/alldevices.c indev)
3622 MUXER_LIST=$(find_things_extern muxer AVOutputFormat libavformat/allformats.c)
3623 DEMUXER_LIST=$(find_things_extern demuxer AVInputFormat libavformat/allformats.c)
3624 ENCODER_LIST=$(find_things_extern encoder AVCodec libavcodec/allcodecs.c)
3625 DECODER_LIST=$(find_things_extern decoder AVCodec libavcodec/allcodecs.c)
3626 CODEC_LIST="
3627     $ENCODER_LIST
3628     $DECODER_LIST
3629 "
3630 PARSER_LIST=$(find_things_extern parser AVCodecParser libavcodec/parser.c)
3631 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3632 HWACCEL_LIST=$(find_things_extern hwaccel AVHWAccel libavcodec/hwaccels.h)
3633 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3634
3635 AVCODEC_COMPONENTS_LIST="
3636     $BSF_LIST
3637     $DECODER_LIST
3638     $ENCODER_LIST
3639     $HWACCEL_LIST
3640     $PARSER_LIST
3641 "
3642
3643 AVDEVICE_COMPONENTS_LIST="
3644     $INDEV_LIST
3645     $OUTDEV_LIST
3646 "
3647
3648 AVFILTER_COMPONENTS_LIST="
3649     $FILTER_LIST
3650 "
3651
3652 AVFORMAT_COMPONENTS_LIST="
3653     $DEMUXER_LIST
3654     $MUXER_LIST
3655     $PROTOCOL_LIST
3656 "
3657
3658 ALL_COMPONENTS="
3659     $AVCODEC_COMPONENTS_LIST
3660     $AVDEVICE_COMPONENTS_LIST
3661     $AVFILTER_COMPONENTS_LIST
3662     $AVFORMAT_COMPONENTS_LIST
3663 "
3664
3665 for n in $COMPONENT_LIST; do
3666     v=$(toupper ${n%s})_LIST
3667     eval enable \$$v
3668     eval ${n}_if_any="\$$v"
3669 done
3670
3671 enable $ARCH_EXT_LIST
3672
3673 die_unknown(){
3674     echo "Unknown option \"$1\"."
3675     echo "See $0 --help for available options."
3676     exit 1
3677 }
3678
3679 print_in_columns() {
3680     cols=$(expr $ncols / 24)
3681     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3682 }
3683
3684 show_list() {
3685     suffix=_$1
3686     shift
3687     echo $* | sed s/$suffix//g | print_in_columns
3688     exit 0
3689 }
3690
3691 rand_list(){
3692     IFS=', '
3693     set -- $*
3694     unset IFS
3695     for thing; do
3696         comp=${thing%:*}
3697         prob=${thing#$comp}
3698         prob=${prob#:}
3699         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3700         echo "prob ${prob:-0.5}"
3701         printf '%s\n' $comp
3702     done
3703 }
3704
3705 do_random(){
3706     action=$1
3707     shift
3708     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3709     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3710 }
3711
3712 for opt do
3713     optval="${opt#*=}"
3714     case "$opt" in
3715         --extra-ldflags=*)
3716             add_ldflags $optval
3717         ;;
3718         --extra-ldexeflags=*)
3719             add_ldexeflags $optval
3720         ;;
3721         --extra-ldsoflags=*)
3722             add_ldsoflags $optval
3723         ;;
3724         --extra-ldlibflags=*)
3725             warn "The --extra-ldlibflags option is only provided for compatibility and will be\n"\
3726                  "removed in the future. Use --extra-ldsoflags instead."
3727             add_ldsoflags $optval
3728         ;;
3729         --extra-libs=*)
3730             add_extralibs $optval
3731         ;;
3732         --disable-devices)
3733             disable $INDEV_LIST $OUTDEV_LIST
3734         ;;
3735         --enable-debug=*)
3736             debuglevel="$optval"
3737         ;;
3738         --disable-programs)
3739             disable $PROGRAM_LIST
3740         ;;
3741         --disable-everything)
3742             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3743         ;;
3744         --disable-all)
3745             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3746             disable $LIBRARY_LIST $PROGRAM_LIST doc
3747             enable avutil
3748         ;;
3749         --enable-random|--disable-random)
3750             action=${opt%%-random}
3751             do_random ${action#--} $COMPONENT_LIST
3752         ;;
3753         --enable-random=*|--disable-random=*)
3754             action=${opt%%-random=*}
3755             do_random ${action#--} $optval
3756         ;;
3757         --enable-sdl)
3758             enable sdl2
3759         ;;
3760         --enable-*=*|--disable-*=*)
3761             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3762             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3763             eval list=\$$(toupper $thing)_LIST
3764             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3765             list=$(filter "$name" $list)
3766             [ "$list" = "" ] && warn "Option $opt did not match anything"
3767             $action $list
3768         ;;
3769         --enable-yasm|--disable-yasm)
3770             warn "The ${opt} option is only provided for compatibility and will be\n"\
3771                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3772             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3773         ;;
3774         --yasmexe=*)
3775             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3776                  "removed in the future. Use --x86asmexe instead."
3777             x86asmexe="$optval"
3778         ;;
3779         --enable-?*|--disable-?*)
3780             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3781             if is_in $option $COMPONENT_LIST; then
3782                 test $action = disable && action=unset
3783                 eval $action \$$(toupper ${option%s})_LIST
3784             elif is_in $option $CMDLINE_SELECT; then
3785                 $action $option
3786             else
3787                 die_unknown $opt
3788             fi
3789         ;;
3790         --list-*)
3791             NAME="${opt#--list-}"
3792             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3793             NAME=${NAME%s}
3794             eval show_list $NAME \$$(toupper $NAME)_LIST
3795         ;;
3796         --help|-h) show_help
3797         ;;
3798         --quiet|-q) quiet=yes
3799         ;;
3800         --fatal-warnings) enable fatal_warnings
3801         ;;
3802         --libfuzzer=*)
3803             libfuzzer_path="$optval"
3804         ;;
3805         *)
3806             optname="${opt%%=*}"
3807             optname="${optname#--}"
3808             optname=$(echo "$optname" | sed 's/-/_/g')
3809             if is_in $optname $CMDLINE_SET; then
3810                 eval $optname='$optval'
3811             elif is_in $optname $CMDLINE_APPEND; then
3812                 append $optname "$optval"
3813             else
3814                 die_unknown $opt
3815             fi
3816         ;;
3817     esac
3818 done
3819
3820 for e in $env; do
3821     eval "export $e"
3822 done
3823
3824 if disabled autodetect; then
3825
3826     # Unless iconv is explicitely disabled by the user, we still want to probe
3827     # for the iconv from the libc.
3828     disabled iconv || enable libc_iconv
3829
3830     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3831     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3832 fi
3833 # Mark specifically enabled, but normally autodetected libraries as requested.
3834 for lib in $AUTODETECT_LIBS; do
3835     enabled $lib && request $lib
3836 done
3837 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
3838 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3839 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3840
3841 disabled logging && logfile=/dev/null
3842
3843 # command line configuration sanity checks
3844
3845 # we need to build at least one lib type
3846 if ! enabled_any static shared; then
3847     cat <<EOF
3848 At least one library type must be built.
3849 Specify --enable-static to build the static libraries or --enable-shared to
3850 build the shared libraries as well. To only build the shared libraries specify
3851 --disable-static in addition to --enable-shared.
3852 EOF
3853     exit 1
3854 fi
3855
3856 die_license_disabled() {
3857     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3858 }
3859
3860 die_license_disabled_gpl() {
3861     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3862 }
3863
3864 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3865 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3866
3867 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3868 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3869
3870 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3871
3872 if enabled nonfree; then
3873     license="nonfree and unredistributable"
3874 elif enabled gplv3; then
3875     license="GPL version 3 or later"
3876 elif enabled lgplv3; then
3877     license="LGPL version 3 or later"
3878 elif enabled gpl; then
3879     license="GPL version 2 or later"
3880 else
3881     license="LGPL version 2.1 or later"
3882 fi
3883
3884 enabled_all gnutls openssl &&
3885     die "GnuTLS and OpenSSL must not be enabled at the same time."
3886
3887 # Disable all the library-specific components if the library itself
3888 # is disabled, see AVCODEC_LIST and following _LIST variables.
3889
3890 disable_components(){
3891     disabled ${1} && disable $(
3892         eval components="\$$(toupper ${1})_COMPONENTS"
3893         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3894     )
3895 }
3896
3897 map 'disable_components $v' $LIBRARY_LIST
3898
3899 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3900 set >> $logfile
3901
3902 test -n "$valgrind" && toolchain="valgrind-memcheck"
3903
3904 enabled ossfuzz && {
3905     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
3906     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
3907 }
3908
3909 case "$toolchain" in
3910     *-asan)
3911         cc_default="${toolchain%-asan}"
3912         add_cflags  -fsanitize=address
3913         add_ldflags -fsanitize=address
3914     ;;
3915     *-msan)
3916         cc_default="${toolchain%-msan}"
3917         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3918         add_ldflags -fsanitize=memory
3919     ;;
3920     *-tsan)
3921         cc_default="${toolchain%-tsan}"
3922         add_cflags  -fsanitize=thread -fPIE
3923         add_ldflags -fsanitize=thread -pie
3924         case "$toolchain" in
3925             gcc-tsan)
3926                 add_cflags  -fPIC
3927                 add_ldflags -fPIC
3928                 ;;
3929         esac
3930     ;;
3931     *-usan)
3932         cc_default="${toolchain%-usan}"
3933         add_cflags  -fsanitize=undefined
3934         add_ldflags -fsanitize=undefined
3935     ;;
3936     valgrind-*)
3937         target_exec_default="valgrind"
3938         case "$toolchain" in
3939             valgrind-massif)
3940                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3941                 ;;
3942             valgrind-memcheck)
3943                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3944                 ;;
3945         esac
3946     ;;
3947     msvc)
3948         # Check whether the current MSVC version needs the C99 converter.
3949         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3950         # support enough of C99 to build ffmpeg. Default to the new
3951         # behaviour if the regexp was unable to match anything, since this
3952         # successfully parses the version number of existing supported
3953         # versions that require the converter (MSVC 2010 and 2012).
3954         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3955         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3956             cc_default="cl"
3957             cxx_default="cl"
3958         else
3959             cc_default="c99wrap cl"
3960             cxx_default="c99wrap cl"
3961         fi
3962         ld_default="$source_path/compat/windows/mslink"
3963         nm_default="dumpbin -symbols"
3964         ar_default="lib"
3965         case "$arch" in
3966         aarch64|arm64)
3967             as_default="armasm64"
3968             ;;
3969         arm*)
3970             as_default="armasm"
3971             ;;
3972         esac
3973         target_os_default="win32"
3974         # Use a relative path for TMPDIR. This makes sure all the
3975         # ffconf temp files are written with a relative path, avoiding
3976         # issues with msys/win32 path conversion for MSVC parameters
3977         # such as -Fo<file> or -out:<file>.
3978         TMPDIR=.
3979     ;;
3980     icl)
3981         cc_default="icl"
3982         ld_default="xilink"
3983         nm_default="dumpbin -symbols"
3984         ar_default="xilib"
3985         target_os_default="win32"
3986         TMPDIR=.
3987     ;;
3988     gcov)
3989         add_cflags  -fprofile-arcs -ftest-coverage
3990         add_ldflags -fprofile-arcs -ftest-coverage
3991     ;;
3992     llvm-cov)
3993         add_cflags -fprofile-arcs -ftest-coverage
3994         add_ldflags --coverage
3995     ;;
3996     hardened)
3997         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3998         add_cflags   -fno-strict-overflow -fstack-protector-all
3999         add_ldflags  -Wl,-z,relro -Wl,-z,now
4000         add_cflags   -fPIE
4001         add_ldexeflags -fPIE -pie
4002     ;;
4003     ?*)
4004         die "Unknown toolchain $toolchain"
4005     ;;
4006 esac
4007
4008 if test -n "$cross_prefix"; then
4009     test -n "$arch" && test -n "$target_os" ||
4010         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
4011     enable cross_compile
4012 fi
4013
4014 ar_default="${cross_prefix}${ar_default}"
4015 cc_default="${cross_prefix}${cc_default}"
4016 cxx_default="${cross_prefix}${cxx_default}"
4017 nm_default="${cross_prefix}${nm_default}"
4018 pkg_config_default="${cross_prefix}${pkg_config_default}"
4019 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
4020     ranlib_default="${cross_prefix}${ranlib_default} -D"
4021 else
4022     ranlib_default="${cross_prefix}${ranlib_default}"
4023 fi
4024 strip_default="${cross_prefix}${strip_default}"
4025 windres_default="${cross_prefix}${windres_default}"
4026
4027 sysinclude_default="${sysroot}/usr/include"
4028
4029 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
4030     target_exec target_os x86asmexe nvcc
4031 enabled cross_compile || host_cc_default=$cc
4032 set_default host_cc
4033
4034 pkg_config_fail_message=""
4035 if ! $pkg_config --version >/dev/null 2>&1; then
4036     warn "$pkg_config not found, library detection may fail."
4037     pkg_config=false
4038 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
4039     pkg_config_fail_message="
4040 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
4041 fi
4042
4043 if test $doxygen != $doxygen_default && \
4044   ! $doxygen --version >/dev/null 2>&1; then
4045     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
4046 fi
4047
4048 exesuf() {
4049     case $1 in
4050         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
4051     esac
4052 }
4053
4054 EXESUF=$(exesuf $target_os)
4055 HOSTEXESUF=$(exesuf $host_os)
4056
4057 # set temporary file name
4058 : ${TMPDIR:=$TEMPDIR}
4059 : ${TMPDIR:=$TMP}
4060 : ${TMPDIR:=/tmp}
4061
4062 if [ -n "$tempprefix" ] ; then
4063     mktemp(){
4064         tmpname="$tempprefix.${HOSTNAME}.${UID}"
4065         echo "$tmpname"
4066         mkdir "$tmpname"
4067     }
4068 elif ! test_cmd mktemp -u XXXXXX; then
4069     # simple replacement for missing mktemp
4070     # NOT SAFE FOR GENERAL USE
4071     mktemp(){
4072         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
4073         echo "$tmpname"
4074         mkdir "$tmpname"
4075     }
4076 fi
4077
4078 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
4079     die "Unable to create temporary directory in $TMPDIR."
4080
4081 tmpfile(){
4082     tmp="${FFTMPDIR}/test"$2
4083     (set -C; exec > $tmp) 2> /dev/null ||
4084         die "Unable to create temporary file in $FFTMPDIR."
4085     eval $1=$tmp
4086 }
4087
4088 trap 'rm -rf -- "$FFTMPDIR"' EXIT
4089 trap 'exit 2' INT
4090
4091 tmpfile TMPASM .asm
4092 tmpfile TMPC   .c
4093 tmpfile TMPCPP .cpp
4094 tmpfile TMPE   $EXESUF
4095 tmpfile TMPH   .h
4096 tmpfile TMPM   .m
4097 tmpfile TMPO   .o
4098 tmpfile TMPS   .S
4099 tmpfile TMPSH  .sh
4100 tmpfile TMPV   .ver
4101
4102 unset -f mktemp
4103
4104 chmod +x $TMPE
4105
4106 # make sure we can execute files in $TMPDIR
4107 cat > $TMPSH 2>> $logfile <<EOF
4108 #! /bin/sh
4109 EOF
4110 chmod +x $TMPSH >> $logfile 2>&1
4111 if ! $TMPSH >> $logfile 2>&1; then
4112     cat <<EOF
4113 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
4114 variable to another directory and make sure that it is not mounted noexec.
4115 EOF
4116     die "Sanity test failed."
4117 fi
4118
4119 armasm_flags(){
4120     for flag; do
4121         case $flag in
4122             # Filter out MSVC cl.exe options from cflags that shouldn't
4123             # be passed to gas-preprocessor
4124             -M[TD]*)                                            ;;
4125             *)                  echo $flag                      ;;
4126         esac
4127    done
4128 }
4129
4130 cparser_flags(){
4131     for flag; do
4132         case $flag in
4133             -Wno-switch)             echo -Wno-switch-enum ;;
4134             -Wno-format-zero-length) ;;
4135             -Wdisabled-optimization) ;;
4136             -Wno-pointer-sign)       echo -Wno-other ;;
4137             *)                       echo $flag ;;
4138         esac
4139     done
4140 }
4141
4142 msvc_common_flags(){
4143     for flag; do
4144         case $flag in
4145             # In addition to specifying certain flags under the compiler
4146             # specific filters, they must be specified here as well or else the
4147             # generic catch all at the bottom will print the original flag.
4148             -Wall)                ;;
4149             -Wextra)              ;;
4150             -std=c99)             ;;
4151             # Common flags
4152             -fomit-frame-pointer) ;;
4153             -g)                   echo -Z7 ;;
4154             -fno-math-errno)      ;;
4155             -fno-common)          ;;
4156             -fno-signed-zeros)    ;;
4157             -fPIC)                ;;
4158             -mthumb)              ;;
4159             -march=*)             ;;
4160             -lz)                  echo zlib.lib ;;
4161             -lx264)               echo libx264.lib ;;
4162             -lstdc++)             ;;
4163             -l*)                  echo ${flag#-l}.lib ;;
4164             -LARGEADDRESSAWARE)   echo $flag ;;
4165             -L*)                  echo -libpath:${flag#-L} ;;
4166             *)                    echo $flag ;;
4167         esac
4168     done
4169 }
4170
4171 msvc_flags(){
4172     msvc_common_flags "$@"
4173     for flag; do
4174         case $flag in
4175             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4176                                        -wd4554 ;;
4177             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4178                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4179                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4180                                        -wd4307 \
4181                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4182         esac
4183     done
4184 }
4185
4186 icl_flags(){
4187     msvc_common_flags "$@"
4188     for flag; do
4189         case $flag in
4190             # Despite what Intel's documentation says -Wall, which is supported
4191             # on Windows, does enable remarks so disable them here.
4192             -Wall)                echo $flag -Qdiag-disable:remark ;;
4193             -std=c99)             echo -Qstd=c99 ;;
4194             -flto)                echo -ipo ;;
4195         esac
4196     done
4197 }
4198
4199 icc_flags(){
4200     for flag; do
4201         case $flag in
4202             -flto)                echo -ipo ;;
4203             *)                    echo $flag ;;
4204         esac
4205     done
4206 }
4207
4208 suncc_flags(){
4209     for flag; do
4210         case $flag in
4211             -march=*|-mcpu=*)
4212                 case "${flag#*=}" in
4213                     native)                   echo -xtarget=native       ;;
4214                     v9|niagara)               echo -xarch=sparc          ;;
4215                     ultrasparc)               echo -xarch=sparcvis       ;;
4216                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4217                     i586|pentium)             echo -xchip=pentium        ;;
4218                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4219                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4220                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4221                     pentium4*)          echo -xtarget=pentium4           ;;
4222                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4223                     *-sse3)             echo -xarch=sse3                 ;;
4224                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4225                     bonnell)                   echo -xarch=ssse3         ;;
4226                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4227                     westmere)                  echo -xtarget=westmere    ;;
4228                     silvermont)                echo -xarch=sse4_2        ;;
4229                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4230                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4231                                                echo -xarch=avx           ;;
4232                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4233                     btver1)                    echo -xarch=amdsse4a      ;;
4234                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4235                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4236                     k8|opteron|athlon64|athlon-fx)
4237                                                echo -xarch=sse2a         ;;
4238                     athlon*)                   echo -xarch=pentium_proa  ;;
4239                 esac
4240                 ;;
4241             -std=c99)             echo -xc99              ;;
4242             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4243             -fPIC)                echo -KPIC -xcode=pic32 ;;
4244             -W*,*)                echo $flag              ;;
4245             -f*-*|-W*|-mimpure-text)                      ;;
4246             -shared)              echo -G                 ;;
4247             *)                    echo $flag              ;;
4248         esac
4249     done
4250 }
4251
4252 probe_cc(){
4253     pfx=$1
4254     _cc=$2
4255     first=$3
4256
4257     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4258     unset _ld_o _ldflags _ld_lib _ld_path
4259     unset _depflags _DEPCMD _DEPFLAGS
4260     _flags_filter=echo
4261
4262     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4263         true # no-op to avoid reading stdin in following checks
4264     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4265         _type=llvm_gcc
4266         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4267         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4268         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4269         _cflags_speed='-O3'
4270         _cflags_size='-Os'
4271     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4272         _type=gcc
4273         gcc_version=$($_cc --version | head -n1)
4274         gcc_basever=$($_cc -dumpversion)
4275         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4276         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4277         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4278         case $gcc_basever in
4279             2) ;;
4280             2.*) ;;
4281             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4282         esac
4283         if [ "$first" = true ]; then
4284             case $gcc_basever in
4285                 4.2*)
4286                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4287             esac
4288         fi
4289         _cflags_speed='-O3'
4290         _cflags_size='-Os'
4291     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4292         _type=icc
4293         _ident=$($_cc --version | head -n1)
4294         _depflags='-MMD'
4295         _cflags_speed='-O3'
4296         _cflags_size='-Os'
4297         _cflags_noopt='-O1'
4298         _flags_filter=icc_flags
4299     elif $_cc -v 2>&1 | grep -q xlc; then
4300         _type=xlc
4301         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4302         _cflags_speed='-O5'
4303         _cflags_size='-O5 -qcompact'
4304     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4305         test -d "$sysroot" || die "No valid sysroot specified."
4306         _type=armcc
4307         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4308         armcc_conf="$PWD/armcc.conf"
4309         $_cc --arm_linux_configure                 \
4310              --arm_linux_config_file="$armcc_conf" \
4311              --configure_sysroot="$sysroot"        \
4312              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4313              die "Error creating armcc configuration file."
4314         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4315         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4316         as_default="${cross_prefix}gcc"
4317         _depflags='-MMD'
4318         _cflags_speed='-O3'
4319         _cflags_size='-Os'
4320     elif $_cc -v 2>&1 | grep -q clang; then
4321         _type=clang
4322         _ident=$($_cc --version 2>/dev/null | head -n1)
4323         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4324         _cflags_speed='-O3'
4325         _cflags_size='-Oz'
4326     elif $_cc -V 2>&1 | grep -q Sun; then
4327         _type=suncc
4328         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4329         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4330         _DEPFLAGS='-xM1 -xc99'
4331         _ldflags='-std=c99'
4332         _cflags_speed='-O5'
4333         _cflags_size='-O5 -xspace'
4334         _flags_filter=suncc_flags
4335     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4336         _type=pathscale
4337         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4338         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4339         _cflags_speed='-O2'
4340         _cflags_size='-Os'
4341         _flags_filter='filter_out -Wdisabled-optimization'
4342     elif $_cc -v 2>&1 | grep -q Open64; then
4343         _type=open64
4344         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4345         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4346         _cflags_speed='-O2'
4347         _cflags_size='-Os'
4348         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4349     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4350         _type=armasm
4351         _ident=$($_cc | head -n1)
4352         # 4509: "This form of conditional instruction is deprecated"
4353         _flags="-nologo -ignore 4509"
4354         _flags_filter=armasm_flags
4355     elif $_cc 2>&1 | grep -q Intel; then
4356         _type=icl
4357         _ident=$($_cc 2>&1 | head -n1)
4358         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4359         # Not only is O3 broken on 13.x+ but it is slower on all previous
4360         # versions (tested) as well.
4361         _cflags_speed="-O2"
4362         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4363         if $_cc 2>&1 | grep -q Linker; then
4364             _ld_o='-out:$@'
4365         else
4366             _ld_o='-Fe$@'
4367         fi
4368         _cc_o='-Fo$@'
4369         _cc_e='-P'
4370         _flags_filter=icl_flags
4371         _ld_lib='lib%.a'
4372         _ld_path='-libpath:'
4373         # -Qdiag-error to make icl error when seeing certain unknown arguments
4374         _flags='-nologo -Qdiag-error:4044,10157'
4375         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4376         # with MSVC which enables it by default.
4377         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4378         disable stripping
4379     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4380         # lld can emulate multiple different linkers; in ms link.exe mode,
4381         # the -? parameter gives the help output which contains an identifyable
4382         # string, while it gives an error in other modes.
4383         _type=lld-link
4384         # The link.exe mode doesn't have a switch for getting the version,
4385         # but we can force it back to gnu mode and get the version from there.
4386         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4387         _ld_o='-out:$@'
4388         _flags_filter=msvc_flags
4389         _ld_lib='lib%.a'
4390         _ld_path='-libpath:'
4391     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4392         _type=msvc
4393         _ident=$($_cc 2>&1 | head -n1 | tr -d '\r')
4394         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4395         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4396         _cflags_speed="-O2"
4397         _cflags_size="-O1"
4398         _cflags_noopt="-O1"
4399         if $_cc -nologo- 2>&1 | grep -q Linker; then
4400             _ld_o='-out:$@'
4401         else
4402             _ld_o='-Fe$@'
4403         fi
4404         _cc_o='-Fo$@'
4405         _cc_e='-P -Fi$@'
4406         _flags_filter=msvc_flags
4407         _ld_lib='lib%.a'
4408         _ld_path='-libpath:'
4409         _flags='-nologo'
4410         disable stripping
4411     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4412         _type=cparser
4413         _ident=$($_cc --version | head -n1)
4414         _depflags='-MMD'
4415         _cflags_speed='-O4'
4416         _cflags_size='-O2'
4417         _flags_filter=cparser_flags
4418     fi
4419
4420     eval ${pfx}_type=\$_type
4421     eval ${pfx}_ident=\$_ident
4422 }
4423
4424 set_ccvars(){
4425     eval ${1}_C=\${_cc_c-\${${1}_C}}
4426     eval ${1}_E=\${_cc_e-\${${1}_E}}
4427     eval ${1}_O=\${_cc_o-\${${1}_O}}
4428
4429     if [ -n "$_depflags" ]; then
4430         eval ${1}_DEPFLAGS=\$_depflags
4431     else
4432         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4433         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4434         eval DEP${1}FLAGS=\$_flags
4435     fi
4436 }
4437
4438 probe_cc cc "$cc" "true"
4439 cflags_filter=$_flags_filter
4440 cflags_speed=$_cflags_speed
4441 cflags_size=$_cflags_size
4442 cflags_noopt=$_cflags_noopt
4443 add_cflags $_flags $_cflags
4444 cc_ldflags=$_ldflags
4445 set_ccvars CC
4446 set_ccvars CXX
4447
4448 probe_cc hostcc "$host_cc"
4449 host_cflags_filter=$_flags_filter
4450 host_cflags_speed=$_cflags_speed
4451 add_host_cflags  $_flags $_cflags
4452 set_ccvars HOSTCC
4453
4454 test -n "$cc_type" && enable $cc_type ||
4455     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4456
4457 : ${as_default:=$cc}
4458 : ${objcc_default:=$cc}
4459 : ${dep_cc_default:=$cc}
4460 : ${ld_default:=$cc}
4461 : ${host_ld_default:=$host_cc}
4462 set_default ar as objcc dep_cc ld ln_s host_ld windres
4463
4464 probe_cc as "$as"
4465 asflags_filter=$_flags_filter
4466 add_asflags $_flags $_cflags
4467 set_ccvars AS
4468
4469 probe_cc objcc "$objcc"
4470 objcflags_filter=$_flags_filter
4471 add_objcflags $_flags $_cflags
4472 set_ccvars OBJC
4473
4474 probe_cc ld "$ld"
4475 ldflags_filter=$_flags_filter
4476 add_ldflags $_flags $_ldflags
4477 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4478 LD_O=${_ld_o-$LD_O}
4479 LD_LIB=${_ld_lib-$LD_LIB}
4480 LD_PATH=${_ld_path-$LD_PATH}
4481
4482 probe_cc hostld "$host_ld"
4483 host_ldflags_filter=$_flags_filter
4484 add_host_ldflags $_flags $_ldflags
4485 HOSTLD_O=${_ld_o-$HOSTLD_O}
4486
4487 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4488     probe_cc depcc "$dep_cc"
4489     CCDEP=${_DEPCMD:-$DEPCMD}
4490     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4491     DEPCCFLAGS=$_flags
4492 fi
4493
4494 if $ar 2>&1 | grep -q Microsoft; then
4495     arflags="-nologo"
4496     ar_o='-out:$@'
4497 elif $ar 2>&1 | grep -q "\[D\] "; then
4498     arflags="rcD"
4499     ar_o='$@'
4500 else
4501     arflags="rc"
4502     ar_o='$@'
4503 fi
4504
4505 add_cflags $extra_cflags
4506 add_cxxflags $extra_cxxflags
4507 add_objcflags $extra_objcflags
4508 add_asflags $extra_cflags
4509
4510 if test -n "$sysroot"; then
4511     case "$cc_type" in
4512         gcc|llvm_gcc|clang)
4513             add_cppflags --sysroot="$sysroot"
4514             add_ldflags --sysroot="$sysroot"
4515         ;;
4516     esac
4517 fi
4518
4519 if test "$cpu" = host; then
4520     enabled cross_compile &&
4521         die "--cpu=host makes no sense when cross-compiling."
4522
4523     case "$cc_type" in
4524         gcc|llvm_gcc)
4525             check_native(){
4526                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4527                 sed -n "/cc1.*$1=/{
4528                             s/.*$1=\\([^ ]*\\).*/\\1/
4529                             p
4530                             q
4531                         }" $TMPE
4532             }
4533             cpu=$(check_native -march || check_native -mcpu)
4534         ;;
4535         clang)
4536             check_native(){
4537                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4538                 sed -n "/cc1.*-target-cpu /{
4539                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4540                             p
4541                             q
4542                         }" $TMPE
4543             }
4544             cpu=$(check_native -march)
4545         ;;
4546     esac
4547
4548     test "${cpu:-host}" = host &&
4549         die "--cpu=host not supported with compiler $cc"
4550 fi
4551
4552 # Deal with common $arch aliases
4553 case "$arch" in
4554     aarch64|arm64)
4555         arch="aarch64"
4556     ;;
4557     arm*|iPad*|iPhone*)
4558         arch="arm"
4559     ;;
4560     mips*|IP*)
4561         case "$arch" in
4562         *el)
4563             add_cppflags -EL
4564             add_ldflags -EL
4565         ;;
4566         *eb)
4567             add_cppflags -EB
4568             add_ldflags -EB
4569         ;;
4570         esac
4571         arch="mips"
4572     ;;
4573     parisc*|hppa*)
4574         arch="parisc"
4575     ;;
4576     "Power Macintosh"|ppc*|powerpc*)
4577         arch="ppc"
4578     ;;
4579     s390|s390x)
4580         arch="s390"
4581     ;;
4582     sh4|sh)
4583         arch="sh4"
4584     ;;
4585     sun4*|sparc*)
4586         arch="sparc"
4587     ;;
4588     tilegx|tile-gx)
4589         arch="tilegx"
4590     ;;
4591     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4592         arch="x86"
4593     ;;
4594 esac
4595
4596 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4597 enable $arch
4598
4599 # Add processor-specific flags
4600 if enabled aarch64; then
4601
4602     case $cpu in
4603         armv*)
4604             cpuflags="-march=$cpu"
4605         ;;
4606         *)
4607             cpuflags="-mcpu=$cpu"
4608         ;;
4609     esac
4610
4611 elif enabled alpha; then
4612
4613     cpuflags="-mcpu=$cpu"
4614
4615 elif enabled arm; then
4616
4617     check_arm_arch() {
4618         test_cpp_condition stddef.h \
4619             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4620             $cpuflags
4621     }
4622
4623     probe_arm_arch() {
4624         if   check_arm_arch 4;        then echo armv4
4625         elif check_arm_arch 4T;       then echo armv4t
4626         elif check_arm_arch 5;        then echo armv5
4627         elif check_arm_arch 5E;       then echo armv5e
4628         elif check_arm_arch 5T;       then echo armv5t
4629         elif check_arm_arch 5TE;      then echo armv5te
4630         elif check_arm_arch 5TEJ;     then echo armv5te
4631         elif check_arm_arch 6;        then echo armv6
4632         elif check_arm_arch 6J;       then echo armv6j
4633         elif check_arm_arch 6K;       then echo armv6k
4634         elif check_arm_arch 6Z;       then echo armv6z
4635         elif check_arm_arch 6KZ;      then echo armv6zk
4636         elif check_arm_arch 6ZK;      then echo armv6zk
4637         elif check_arm_arch 6T2;      then echo armv6t2
4638         elif check_arm_arch 7;        then echo armv7
4639         elif check_arm_arch 7A  7_A;  then echo armv7-a
4640         elif check_arm_arch 7S;       then echo armv7-a
4641         elif check_arm_arch 7R  7_R;  then echo armv7-r
4642         elif check_arm_arch 7M  7_M;  then echo armv7-m
4643         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4644         elif check_arm_arch 8A  8_A;  then echo armv8-a
4645         fi
4646     }
4647
4648     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4649
4650     case $cpu in
4651         armv*)
4652             cpuflags="-march=$cpu"
4653             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4654         ;;
4655         *)
4656             cpuflags="-mcpu=$cpu"
4657             case $cpu in
4658                 cortex-a*)                               subarch=armv7a  ;;
4659                 cortex-r*)                               subarch=armv7r  ;;
4660                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4661                 arm11*)                                  subarch=armv6   ;;
4662                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4663                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4664                 *)                             subarch=$(probe_arm_arch) ;;
4665             esac
4666         ;;
4667     esac
4668
4669     case "$subarch" in
4670         armv5t*)    enable fast_clz                ;;
4671         armv[6-8]*)
4672             enable fast_clz
4673             disabled fast_unaligned || enable fast_unaligned
4674             ;;
4675     esac
4676
4677 elif enabled avr32; then
4678
4679     case $cpu in
4680         ap7[02]0[0-2])
4681             subarch="avr32_ap"
4682             cpuflags="-mpart=$cpu"
4683         ;;
4684         ap)
4685             subarch="avr32_ap"
4686             cpuflags="-march=$cpu"
4687         ;;
4688         uc3[ab]*)
4689             subarch="avr32_uc"
4690             cpuflags="-mcpu=$cpu"
4691         ;;
4692         uc)
4693             subarch="avr32_uc"
4694             cpuflags="-march=$cpu"
4695         ;;
4696     esac
4697
4698 elif enabled bfin; then
4699
4700     cpuflags="-mcpu=$cpu"
4701
4702 elif enabled mips; then
4703
4704     cpuflags="-march=$cpu"
4705
4706     if [ "$cpu" != "generic" ]; then
4707         disable mips32r2
4708         disable mips32r5
4709         disable mips64r2
4710         disable mips32r6
4711         disable mips64r6
4712         disable loongson2
4713         disable loongson3
4714
4715         case $cpu in
4716             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4717                 enable mips32r2
4718                 disable msa
4719             ;;
4720             p5600|i6400|p6600)
4721                 disable mipsdsp
4722                 disable mipsdspr2
4723             ;;
4724             loongson*)
4725                 enable loongson2
4726                 enable loongson3
4727                 enable local_aligned
4728                 enable simd_align_16
4729                 enable fast_64bit
4730                 enable fast_clz
4731                 enable fast_cmov
4732                 enable fast_unaligned
4733                 disable aligned_stack
4734                 disable mipsfpu
4735                 disable mipsdsp
4736                 disable mipsdspr2
4737                 case $cpu in
4738                     loongson3*)
4739                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4740                     ;;
4741                     loongson2e)
4742                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4743                     ;;
4744                     loongson2f)
4745                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4746                     ;;
4747                 esac
4748             ;;
4749             *)
4750                 # Unknown CPU. Disable everything.
4751                 warn "unknown CPU. Disabling all MIPS optimizations."
4752                 disable mipsfpu
4753                 disable mipsdsp
4754                 disable mipsdspr2
4755                 disable msa
4756                 disable mmi
4757             ;;
4758         esac
4759
4760         case $cpu in
4761             24kc)
4762                 disable mipsfpu
4763                 disable mipsdsp
4764                 disable mipsdspr2
4765             ;;
4766             24kf*)
4767                 disable mipsdsp
4768                 disable mipsdspr2
4769             ;;
4770             24kec|34kc|1004kc)
4771                 disable mipsfpu
4772                 disable mipsdspr2
4773             ;;
4774             24kef*|34kf*|1004kf*)
4775                 disable mipsdspr2
4776             ;;
4777             74kc)
4778                 disable mipsfpu
4779             ;;
4780             p5600)
4781                 enable mips32r5
4782                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4783             ;;
4784             i6400)
4785                 enable mips64r6
4786                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4787             ;;
4788             p6600)
4789                 enable mips64r6
4790                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4791             ;;
4792         esac
4793     else
4794         # We do not disable anything. Is up to the user to disable the unwanted features.
4795         warn 'generic cpu selected'
4796     fi
4797
4798 elif enabled ppc; then
4799
4800     disable ldbrx
4801
4802     case $(tolower $cpu) in
4803         601|ppc601|powerpc601)
4804             cpuflags="-mcpu=601"
4805             disable altivec
4806         ;;
4807         603*|ppc603*|powerpc603*)
4808             cpuflags="-mcpu=603"
4809             disable altivec
4810         ;;
4811         604*|ppc604*|powerpc604*)
4812             cpuflags="-mcpu=604"
4813             disable altivec
4814         ;;
4815         g3|75*|ppc75*|powerpc75*)
4816             cpuflags="-mcpu=750"
4817             disable altivec
4818         ;;
4819         g4|745*|ppc745*|powerpc745*)
4820             cpuflags="-mcpu=7450"
4821             disable vsx
4822         ;;
4823         74*|ppc74*|powerpc74*)
4824             cpuflags="-mcpu=7400"
4825             disable vsx
4826         ;;
4827         g5|970|ppc970|powerpc970)
4828             cpuflags="-mcpu=970"
4829             disable vsx
4830         ;;
4831         power[3-6]*)
4832             cpuflags="-mcpu=$cpu"
4833             disable vsx
4834         ;;
4835         power[7-8]*)
4836             cpuflags="-mcpu=$cpu"
4837         ;;
4838         cell)
4839             cpuflags="-mcpu=cell"
4840             enable ldbrx
4841             disable vsx
4842         ;;
4843         e500mc)
4844             cpuflags="-mcpu=e500mc"
4845             disable altivec
4846         ;;
4847         e500v2)
4848             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4849             disable altivec
4850             disable dcbzl
4851         ;;
4852         e500)
4853             cpuflags="-mcpu=8540 -mhard-float"
4854             disable altivec
4855             disable dcbzl
4856         ;;
4857     esac
4858
4859 elif enabled sparc; then
4860
4861     case $cpu in
4862         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4863             cpuflags="-mcpu=$cpu"
4864         ;;
4865         ultrasparc*|niagara[234])
4866             cpuflags="-mcpu=$cpu"
4867         ;;
4868     esac
4869
4870 elif enabled x86; then
4871
4872     case $cpu in
4873         i[345]86|pentium)
4874             cpuflags="-march=$cpu"
4875             disable i686
4876             disable mmx
4877         ;;
4878         # targets that do NOT support nopl and conditional mov (cmov)
4879         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4880             cpuflags="-march=$cpu"
4881             disable i686
4882         ;;
4883         # targets that do support nopl and conditional mov (cmov)
4884         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4885         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4886         |amdfam10|barcelona|b[dt]ver*|znver*)
4887             cpuflags="-march=$cpu"
4888             enable i686
4889             enable fast_cmov
4890         ;;
4891         # targets that do support conditional mov but on which it's slow
4892         pentium4|pentium4m|prescott|nocona)
4893             cpuflags="-march=$cpu"
4894             enable i686
4895             disable fast_cmov
4896         ;;
4897     esac
4898
4899 fi
4900
4901 if [ "$cpu" != generic ]; then
4902     add_cflags  $cpuflags
4903     add_asflags $cpuflags
4904     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4905 fi
4906
4907 # compiler sanity check
4908 test_exec <<EOF
4909 int main(void){ return 0; }
4910 EOF
4911 if test "$?" != 0; then
4912     echo "$cc is unable to create an executable file."
4913     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4914         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4915         echo "Only do this if you know what cross compiling means."
4916     fi
4917     die "C compiler test failed."
4918 fi
4919
4920 add_cppflags -D_ISOC99_SOURCE
4921 add_cxxflags -D__STDC_CONSTANT_MACROS
4922 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
4923
4924 # some compilers silently accept -std=c11, so we also need to check that the
4925 # version macro is defined properly
4926 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
4927     add_cflags -std=c11 ||
4928     check_cflags -std=c99
4929
4930 check_cppflags -D_FILE_OFFSET_BITS=64
4931 check_cppflags -D_LARGEFILE_SOURCE
4932
4933 add_host_cppflags -D_ISOC99_SOURCE
4934 check_host_cflags -std=c99
4935 check_host_cflags -Wall
4936 check_host_cflags $host_cflags_speed
4937
4938 check_64bit(){
4939     arch32=$1
4940     arch64=$2
4941     expr=${3:-'sizeof(void *) > 4'}
4942     test_code cc "" "int test[2*($expr) - 1]" &&
4943         subarch=$arch64 || subarch=$arch32
4944     enable $subarch
4945 }
4946
4947 case "$arch" in
4948     aarch64|alpha|ia64)
4949         enabled shared && enable_weak pic
4950     ;;
4951     mips)
4952         check_64bit mips mips64 '_MIPS_SIM > 1'
4953         enabled shared && enable_weak pic
4954     ;;
4955     parisc)
4956         check_64bit parisc parisc64
4957         enabled shared && enable_weak pic
4958     ;;
4959     ppc)
4960         check_64bit ppc ppc64
4961         enabled shared && enable_weak pic
4962     ;;
4963     s390)
4964         check_64bit s390 s390x
4965         enabled shared && enable_weak pic
4966     ;;
4967     sparc)
4968         check_64bit sparc sparc64
4969         enabled shared && enable_weak pic
4970     ;;
4971     x86)
4972         check_64bit x86_32 x86_64
4973         # Treat x32 as x64 for now. Note it also needs pic if shared
4974         test "$subarch" = "x86_32" && test_cpp_condition stddef.h 'defined(__x86_64__)' &&
4975             subarch=x86_64 && enable x86_64 && disable x86_32
4976         if enabled x86_64; then
4977             enabled shared && enable_weak pic
4978             objformat=elf64
4979         fi
4980     ;;
4981 esac
4982
4983 # OS specific
4984 case $target_os in
4985     aix)
4986         SHFLAGS=-shared
4987         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4988         enabled shared && add_ldflags -Wl,-brtl
4989         arflags='-Xany -r -c'
4990         ;;
4991     android)
4992         disable symver
4993         enable section_data_rel_ro
4994         SLIB_INSTALL_NAME='$(SLIBNAME)'
4995         SLIB_INSTALL_LINKS=
4996         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4997         ;;
4998     haiku)
4999         prefix_default="/boot/common"
5000         network_extralibs="-lnetwork"
5001         host_extralibs=
5002         ;;
5003     sunos)
5004         SHFLAGS='-shared -Wl,-h,$$(@F)'
5005         enabled x86 && append SHFLAGS -mimpure-text
5006         network_extralibs="-lsocket -lnsl"
5007         add_cppflags -D__EXTENSIONS__
5008         # When using suncc to build, the Solaris linker will mark
5009         # an executable with each instruction set encountered by
5010         # the Solaris assembler.  As our libraries contain their own
5011         # guards for processor-specific code, instead suppress
5012         # generation of the HWCAPS ELF section on Solaris x86 only.
5013         enabled_all suncc x86 &&
5014             echo "hwcap_1 = OVERRIDE;" > mapfile &&
5015             add_ldflags -Wl,-M,mapfile
5016         nm_default='nm -P -g'
5017         version_script='-M'
5018         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
5019         ;;
5020     netbsd)
5021         disable symver
5022         oss_indev_extralibs="-lossaudio"
5023         oss_outdev_extralibs="-lossaudio"
5024         enabled gcc || check_ldflags -Wl,-zmuldefs
5025         ;;
5026     openbsd|bitrig)
5027         disable symver
5028         SHFLAGS='-shared'
5029         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
5030         SLIB_INSTALL_LINKS=
5031         oss_indev_extralibs="-lossaudio"
5032         oss_outdev_extralibs="-lossaudio"
5033         ;;
5034     dragonfly)
5035         disable symver
5036         ;;
5037     freebsd)
5038         ;;
5039     bsd/os)
5040         add_extralibs -lpoll -lgnugetopt
5041         strip="strip -d"
5042         ;;
5043     darwin)
5044         enabled ppc && add_asflags -force_cpusubtype_ALL
5045         install_name_dir_default='$(SHLIBDIR)'
5046         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
5047         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
5048         strip="${strip} -x"
5049         add_ldflags -Wl,-dynamic,-search_paths_first
5050         check_cflags -Werror=partial-availability
5051         SLIBSUF=".dylib"
5052         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
5053         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
5054         enabled x86_64 && objformat="macho64" || objformat="macho32"
5055         enabled_any pic shared x86_64 ||
5056             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
5057         check_header dispatch/dispatch.h &&
5058             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
5059         if test -n "$sysroot"; then
5060             is_in -isysroot $cc $CPPFLAGS $CFLAGS || check_cppflags -isysroot $sysroot
5061             is_in -isysroot $ld $LDFLAGS          || check_ldflags  -isysroot $sysroot
5062         fi
5063         version_script='-exported_symbols_list'
5064         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
5065         ;;
5066     msys*)
5067         die "Native MSYS builds are discouraged, please use the MINGW environment."
5068         ;;
5069     mingw32*|mingw64*)
5070         target_os=mingw32
5071         LIBTARGET=i386
5072         if enabled x86_64; then
5073             LIBTARGET="i386:x86-64"
5074         elif enabled arm; then
5075             LIBTARGET="arm"
5076         elif enabled aarch64; then
5077             LIBTARGET="arm64"
5078         fi
5079         if enabled shared; then
5080             # Cannot build both shared and static libs when using dllimport.
5081             disable static
5082         fi
5083         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5084         enabled x86_32 && check_ldflags -Wl,--large-address-aware
5085         shlibdir_default="$bindir_default"
5086         SLIBPREF=""
5087         SLIBSUF=".dll"
5088         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5089         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5090         if test_cmd lib.exe -list; then
5091             SLIB_EXTRA_CMD=-'lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5092             if enabled x86_64; then
5093                 LIBTARGET=x64
5094             fi
5095         else
5096             SLIB_EXTRA_CMD=-'$(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
5097         fi
5098         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5099         SLIB_INSTALL_LINKS=
5100         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5101         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5102         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" AR="$(AR_CMD)" NM="$(NM_CMD)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5103         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--disable-auto-image-base $$(@:$(SLIBSUF)=.def)'
5104         enabled x86_64 && objformat="win64" || objformat="win32"
5105         dlltool="${cross_prefix}dlltool"
5106         ranlib=:
5107         enable dos_paths
5108         check_ldflags -Wl,--nxcompat,--dynamicbase
5109         # Lets work around some stupidity in binutils.
5110         # ld will strip relocations from executables even though we need them
5111         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
5112         # however ld then forgets what the entry point should be (oops) so we
5113         # have to manually (re)set it.
5114         if enabled x86_32; then
5115             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
5116         elif enabled x86_64; then
5117             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
5118             check_ldflags -Wl,--high-entropy-va # binutils 2.25
5119             # Set image base >4GB for extra entropy with HEASLR
5120             add_ldexeflags -Wl,--image-base,0x140000000
5121             append SHFLAGS -Wl,--image-base,0x180000000
5122         fi
5123         ;;
5124     win32|win64)
5125         disable symver
5126         if enabled shared; then
5127             # Link to the import library instead of the normal static library
5128             # for shared libs.
5129             LD_LIB='%.lib'
5130             # Cannot build both shared and static libs with MSVC or icl.
5131             disable static
5132         fi
5133         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
5134         shlibdir_default="$bindir_default"
5135         SLIBPREF=""
5136         SLIBSUF=".dll"
5137         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5138         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5139         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5140         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5141         SLIB_INSTALL_LINKS=
5142         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5143         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5144         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5145         enabled x86_64 && objformat="win64" || objformat="win32"
5146         ranlib=:
5147         enable dos_paths
5148         ;;
5149     cygwin*)
5150         target_os=cygwin
5151         shlibdir_default="$bindir_default"
5152         SLIBPREF="cyg"
5153         SLIBSUF=".dll"
5154         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5155         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5156         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5157         SLIB_INSTALL_LINKS=
5158         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
5159         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
5160         enabled x86_64 && objformat="win64" || objformat="win32"
5161         enable dos_paths
5162         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5163         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5164         ;;
5165     *-dos|freedos|opendos)
5166         network_extralibs="-lsocket"
5167         objformat="coff"
5168         enable dos_paths
5169         add_cppflags -U__STRICT_ANSI__
5170         ;;
5171     linux)
5172         enable section_data_rel_ro
5173         enabled_any arm aarch64 && enable_weak linux_perf
5174         ;;
5175     irix*)
5176         target_os=irix
5177         ranlib="echo ignoring ranlib"
5178         ;;
5179     os/2*)
5180         strip="lxlite -CS"
5181         striptype=""
5182         objformat="aout"
5183         add_cppflags -D_GNU_SOURCE
5184         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
5185         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
5186         LIBSUF="_s.a"
5187         SLIBPREF=""
5188         SLIBSUF=".dll"
5189         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5190         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
5191         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
5192             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
5193             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
5194             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
5195             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
5196         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
5197             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
5198         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5199         SLIB_INSTALL_LINKS=
5200         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
5201         enable dos_paths
5202         enable_weak os2threads
5203         ;;
5204     gnu/kfreebsd)
5205         add_cppflags -D_BSD_SOURCE
5206         ;;
5207     gnu)
5208         ;;
5209     qnx)
5210         add_cppflags -D_QNX_SOURCE
5211         network_extralibs="-lsocket"
5212         ;;
5213     symbian)
5214         SLIBSUF=".dll"
5215         enable dos_paths
5216         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
5217         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
5218         add_ldflags -Wl,--target1-abs,--no-undefined \
5219                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
5220                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
5221         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
5222                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
5223                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
5224         ;;
5225     minix)
5226         ;;
5227     none)
5228         ;;
5229     *)
5230         die "Unknown OS '$target_os'."
5231         ;;
5232 esac
5233
5234 # test if creating links works
5235 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5236 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5237 mkdir "$link_dest"
5238 $ln_s "$link_dest" "$link_name"
5239 touch "$link_dest/test_file"
5240 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5241     # create link to source path
5242     [ -e src ] && rm src
5243     $ln_s "$source_path" src
5244     source_link=src
5245 else
5246     # creating directory links doesn't work
5247     # fall back to using the full source path
5248     source_link="$source_path"
5249 fi
5250 # cleanup
5251 rm -r "$link_dest"
5252 rm -r "$link_name"
5253
5254 # determine libc flavour
5255
5256 probe_libc(){
5257     pfx=$1
5258     pfx_no_=${pfx%_}
5259     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5260     if test_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5261         eval ${pfx}libc_type=uclibc
5262         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5263     elif test_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5264         eval ${pfx}libc_type=glibc
5265         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5266     # MinGW headers can be installed on Cygwin, so check for newlib first.
5267     elif test_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5268         eval ${pfx}libc_type=newlib
5269         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
5270     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5271     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5272         eval ${pfx}libc_type=mingw64
5273         if test_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5274             add_compat msvcrt/snprintf.o
5275             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5276         fi
5277         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5278         eval test \$${pfx_no_}cc_type = "gcc" &&
5279             add_${pfx}cppflags -D__printf__=__gnu_printf__
5280         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5281             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5282     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5283          test_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5284         eval ${pfx}libc_type=mingw32
5285         test_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5286             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5287             die "ERROR: MinGW32 runtime version must be >= 3.15."
5288         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5289         test_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
5290             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5291         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5292             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5293         eval test \$${pfx_no_}cc_type = "gcc" &&
5294             add_${pfx}cppflags -D__printf__=__gnu_printf__
5295     elif test_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5296         eval ${pfx}libc_type=msvcrt
5297         if test_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5298             if [ "$pfx" = host_ ]; then
5299                 add_host_cppflags -Dsnprintf=_snprintf
5300             else
5301                 add_compat strtod.o strtod=avpriv_strtod
5302                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5303                                              _snprintf=avpriv_snprintf  \
5304                                              vsnprintf=avpriv_vsnprintf
5305             fi
5306         fi
5307         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5308         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5309         # 0x601 by default unless something else is set by the user.
5310         # This can easily lead to us detecting functions only present
5311         # in such new versions and producing binaries requiring windows 7.0.
5312         # Therefore explicitly set the default to Vista unless the user has
5313         # set something else on the command line.
5314         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5315         # family. For these cases, configure is free to use any functions
5316         # found in the SDK headers by default. (Alternatively, we could force
5317         # _WIN32_WINNT to 0x0602 in that case.)
5318         test_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5319             { test_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0600; }
5320 #ifdef WINAPI_FAMILY
5321 #include <winapifamily.h>
5322 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5323 #error not desktop
5324 #endif
5325 #endif
5326 EOF
5327         if [ "$pfx" = "" ]; then
5328             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5329             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5330         fi
5331     elif test_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5332         eval ${pfx}libc_type=klibc
5333     elif test_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5334         eval ${pfx}libc_type=bionic
5335     elif test_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5336         eval ${pfx}libc_type=solaris
5337         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5338     fi
5339     test_${pfx}cc <<EOF
5340 #include <time.h>
5341 void *v = localtime_r;
5342 EOF
5343 test "$?" != 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
5344 #include <time.h>
5345 void *v = localtime_r;
5346 EOF
5347
5348     eval test -n "\${${pfx}libc_type}" && enable ${pfx}libc_${libc_type}
5349 }
5350
5351 probe_libc
5352 probe_libc host_
5353
5354 # hacks for compiler/libc/os combinations
5355
5356 case $libc_type in
5357     bionic)
5358         add_compat strtod.o strtod=avpriv_strtod
5359         ;;
5360 esac
5361
5362 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5363     add_cppflags '-I\$(SRC_PATH)/compat/float'
5364
5365 test_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5366
5367 set_default libdir
5368 : ${shlibdir_default:="$libdir"}
5369 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5370
5371 set_default $PATHS_LIST
5372 set_default nm
5373
5374 disabled optimizations || enabled ossfuzz || check_cflags -fomit-frame-pointer
5375
5376 enable_weak_pic() {
5377     disabled pic && return
5378     enable pic
5379     add_cppflags -DPIC
5380     case "$target_os" in
5381     mingw*|cygwin*|win*)
5382         ;;
5383     *)
5384         add_cflags -fPIC
5385         add_asflags -fPIC
5386         ;;
5387     esac
5388 }
5389
5390 enabled pic && enable_weak_pic
5391
5392 test_cc <<EOF || die "Symbol mangling check failed."
5393 int ff_extern;
5394 EOF
5395 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5396 extern_prefix=${sym%%ff_extern*}
5397
5398 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
5399
5400 for restrict_keyword in restrict __restrict__ __restrict ""; do
5401     test_code cc "" "char * $restrict_keyword p" && break
5402 done
5403
5404 check_cc pragma_deprecated "" '_Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"")'
5405
5406 # The global variable ensures the bits appear unchanged in the object file.
5407 test_cc <<EOF || die "endian test failed"
5408 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5409 EOF
5410 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5411
5412 check_cc const_nan math.h "struct { double d; } static const bar[] = { { NAN } }"
5413
5414 if ! enabled ppc64 || enabled bigendian; then
5415     disable vsx
5416 fi
5417
5418 check_gas() {
5419     log "check_gas using '$as' as AS"
5420     # :vararg is used on aarch64, arm and ppc altivec
5421     test_as <<EOF || return 1
5422 .macro m n, y:vararg=0
5423 \n: .int \y
5424 .endm
5425 m x
5426 EOF
5427     # .altmacro is only used in arm asm
5428     ! enabled arm || check_as gnu_as ".altmacro"
5429 }
5430
5431 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5432     nogas=:
5433     enabled_any arm aarch64 && nogas=die
5434     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5435     as_noop=-v
5436
5437     case $as_type in
5438         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5439         gcc)  gaspp_as_type=gas ;;
5440         *)    gaspp_as_type=$as_type ;;
5441     esac
5442
5443     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5444
5445     test "${as#*gas-preprocessor.pl}" != "$as" ||
5446     test_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5447         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5448
5449     if ! check_gas ; then
5450         as=${gas:=$as}
5451         check_gas || \
5452             $nogas "GNU assembler not found, install/update gas-preprocessor"
5453     fi
5454
5455     check_as as_func ".func test
5456                       .endfunc"
5457 fi
5458
5459 check_inline_asm inline_asm_labels '"1:\n"'
5460
5461 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5462
5463 if enabled aarch64; then
5464     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5465     # internal assembler in clang 3.3 does not support this instruction
5466     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5467     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5468
5469     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5470
5471 elif enabled alpha; then
5472
5473     check_cflags -mieee
5474
5475 elif enabled arm; then
5476
5477     enabled msvc && check_cpp_condition thumb stddef.h "defined _M_ARMT"
5478     test_cpp_condition stddef.h "defined __thumb__" && test_cc <<EOF && enable_weak thumb
5479 float func(float a, float b){ return a+b; }
5480 EOF
5481     enabled thumb && check_cflags -mthumb || check_cflags -marm
5482
5483     if check_cpp_condition vfp_args stddef.h "defined __ARM_PCS_VFP"; then
5484         :
5485     elif check_cpp_condition vfp_args stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5486         :
5487     elif ! test_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5488         case "${cross_prefix:-$cc}" in
5489             *hardfloat*) enable vfp_args; fpabi=vfp ;;
5490             *) check_ld "cc" vfp_args <<EOF && fpabi=vfp || fpabi=soft ;;
5491 __asm__ (".eabi_attribute 28, 1");
5492 int main(void) { return 0; }
5493 EOF
5494         esac
5495         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5496     fi
5497
5498     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5499     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5500     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5501     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5502     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5503     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5504     enabled setend  && check_insn setend  'setend be'
5505
5506     [ $target_os = linux ] || [ $target_os = android ] ||
5507         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5508             $ARCH_EXT_LIST_ARM
5509
5510     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5511
5512     check_as as_arch_directive ".arch armv7-a"
5513     check_as as_fpu_directive  ".fpu neon"
5514
5515     # llvm's integrated assembler supports .object_arch from llvm 3.5
5516     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
5517         check_as as_object_arch ".object_arch armv4"
5518
5519     # MS armasm fails to assemble our PIC constructs
5520     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5521
5522 elif enabled mips; then
5523
5524     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5525     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5526     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5527
5528     # Enable minimum ISA based on selected options
5529     if enabled mips64; then
5530         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5531         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5532         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5533     else
5534         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5535         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5536         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5537         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5538     fi
5539
5540     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5541     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5542     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_header msa.h || disable msa
5543     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5544     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5545
5546     if enabled bigendian && enabled msa; then
5547         disable msa
5548     fi
5549
5550 elif enabled parisc; then
5551
5552     if enabled gcc; then
5553         case $($cc -dumpversion) in
5554             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5555         esac
5556     fi
5557
5558 elif enabled ppc; then
5559
5560     enable local_aligned
5561
5562     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5563     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5564     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5565     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5566
5567     if enabled altivec; then
5568         check_cflags -maltivec -mabi=altivec
5569
5570         # check if our compiler supports Motorola AltiVec C API
5571         check_cc altivec altivec.h "vector signed int v1 = (vector signed int) { 0 };
5572                                     vector signed int v2 = (vector signed int) { 1 };
5573                                     v1 = vec_add(v1, v2);"
5574
5575         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5576     fi
5577
5578     if enabled vsx; then
5579         check_cflags -mvsx &&
5580         check_cc vsx altivec.h "int v[4] = { 0 };
5581                                 vector signed int v1 = vec_vsx_ld(0, v);"
5582     fi
5583
5584     if enabled power8; then
5585         check_cpp_condition power8 "altivec.h" "defined(_ARCH_PWR8)"
5586     fi
5587
5588 elif enabled x86; then
5589
5590     check_builtin rdtsc    intrin.h   "__rdtsc()"
5591     check_builtin mm_empty mmintrin.h "_mm_empty()"
5592
5593     enable local_aligned
5594
5595     # check whether EBP is available on x86
5596     # As 'i' is stored on the stack, this program will crash
5597     # if the base pointer is used to access it because the
5598     # base pointer is cleared in the inline assembly code.
5599     check_exec_crash <<EOF && enable ebp_available
5600 volatile int i=0;
5601 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5602 return i;
5603 EOF
5604
5605     # check whether EBX is available on x86
5606     check_inline_asm ebx_available '""::"b"(0)' &&
5607         check_inline_asm ebx_available '"":::"%ebx"'
5608
5609     # check whether xmm clobbers are supported
5610     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5611
5612     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5613         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5614
5615     # check whether binutils is new enough to compile SSSE3/MMXEXT
5616     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5617     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5618
5619     probe_x86asm(){
5620         x86asmexe_probe=$1
5621         if test_cmd $x86asmexe_probe -v; then
5622             x86asmexe=$x86asmexe_probe
5623             x86asm_type=nasm
5624             x86asm_debug="-g -F dwarf"
5625             X86ASMDEP=
5626             X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
5627         elif test_cmd $x86asmexe_probe --version; then
5628             x86asmexe=$x86asmexe_probe
5629             x86asm_type=yasm
5630             x86asm_debug="-g dwarf2"
5631             X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
5632             X86ASM_DEPFLAGS=
5633         fi
5634         test_x86asm "movbe ecx, [5]" && enable x86asm
5635     }
5636
5637     if ! disabled_any asm mmx x86asm; then
5638         disable x86asm
5639         for program in $x86asmexe nasm yasm; do
5640             probe_x86asm $program && break
5641         done
5642         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
5643         X86ASMFLAGS="-f $objformat"
5644         enabled pic               && append X86ASMFLAGS "-DPIC"
5645         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
5646         case "$objformat" in
5647             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
5648         esac
5649
5650         test_x86asm "vmovdqa32 [eax]{k1}{z}, zmm0"    || disable avx512_external
5651         test_x86asm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
5652         test_x86asm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
5653         test_x86asm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
5654         test_x86asm "CPU amdnop" || disable cpunop
5655     fi
5656
5657     case "$cpu" in
5658         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5659             disable fast_clz
5660         ;;
5661     esac
5662
5663 fi
5664
5665 check_cc intrinsics_neon arm_neon.h "int16x8_t test = vdupq_n_s16(0)"
5666
5667 check_ldflags -Wl,--as-needed
5668 check_ldflags -Wl,-z,noexecstack
5669
5670 if ! disabled network; then
5671     check_func getaddrinfo $network_extralibs
5672     check_func inet_aton $network_extralibs
5673
5674     check_type netdb.h "struct addrinfo"
5675     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5676     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5677     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5678     check_type poll.h "struct pollfd"
5679     check_type netinet/sctp.h "struct sctp_event_subscribe"
5680     check_struct "sys/socket.h" "struct msghdr" msg_flags
5681     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5682     check_type netinet/in.h "struct sockaddr_in6"
5683     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5684     check_type "sys/types.h sys/socket.h" socklen_t
5685
5686     # Prefer arpa/inet.h over winsock2
5687     if check_header arpa/inet.h ; then
5688         check_func closesocket
5689     elif check_header winsock2.h ; then
5690         check_func_headers winsock2.h closesocket -lws2 &&
5691             network_extralibs="-lws2" ||
5692         { check_func_headers winsock2.h closesocket -lws2_32 &&
5693             network_extralibs="-lws2_32"; } || disable winsock2_h network
5694         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5695
5696         check_type ws2tcpip.h socklen_t
5697         check_type ws2tcpip.h "struct addrinfo"
5698         check_type ws2tcpip.h "struct group_source_req"
5699         check_type ws2tcpip.h "struct ip_mreq_source"
5700         check_type ws2tcpip.h "struct ipv6_mreq"
5701         check_type winsock2.h "struct pollfd"
5702         check_struct winsock2.h "struct sockaddr" sa_len
5703         check_type ws2tcpip.h "struct sockaddr_in6"
5704         check_type ws2tcpip.h "struct sockaddr_storage"
5705     else
5706         disable network
5707     fi
5708 fi
5709
5710 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5711 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5712 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5713 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5714 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5715 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5716 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5717
5718 case "$custom_allocator" in
5719     jemalloc)
5720         # jemalloc by default does not use a prefix
5721         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5722     ;;
5723     tcmalloc)
5724         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
5725         malloc_prefix=tc_
5726     ;;
5727 esac
5728
5729 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5730 check_func  ${malloc_prefix}memalign            && enable memalign
5731 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5732
5733 check_func  access
5734 check_func_headers stdlib.h arc4random
5735 check_lib   clock_gettime time.h clock_gettime || check_lib clock_gettime time.h clock_gettime -lrt
5736 check_func  fcntl
5737 check_func  fork
5738 check_func  gethrtime
5739 check_func  getopt
5740 check_func  getrusage
5741 check_func  gettimeofday
5742 check_func  isatty
5743 check_func  mkstemp
5744 check_func  mmap
5745 check_func  mprotect
5746 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5747 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
5748 check_func  sched_getaffinity
5749 check_func  setrlimit
5750 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5751 check_func  strerror_r
5752 check_func  sysconf
5753 check_func  sysctl
5754 check_func  usleep
5755
5756 check_func_headers conio.h kbhit
5757 check_func_headers io.h setmode
5758 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5759 check_func_headers mach/mach_time.h mach_absolute_time
5760 check_func_headers stdlib.h getenv
5761 check_func_headers sys/stat.h lstat
5762
5763 check_func_headers windows.h GetProcessAffinityMask
5764 check_func_headers windows.h GetProcessTimes
5765 check_func_headers windows.h GetSystemTimeAsFileTime
5766 check_func_headers windows.h LoadLibrary
5767 check_func_headers windows.h MapViewOfFile
5768 check_func_headers windows.h PeekNamedPipe
5769 check_func_headers windows.h SetConsoleTextAttribute
5770 check_func_headers windows.h SetConsoleCtrlHandler
5771 check_func_headers windows.h Sleep
5772 check_func_headers windows.h VirtualAlloc
5773 check_func_headers glob.h glob
5774 enabled xlib &&
5775     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5776
5777 check_header direct.h
5778 check_header dirent.h
5779 check_header dxgidebug.h
5780 check_header dxva.h
5781 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5782 check_header io.h
5783 check_header libcrystalhd/libcrystalhd_if.h
5784 check_header malloc.h
5785 check_header net/udplite.h
5786 check_header poll.h
5787 check_header sys/param.h
5788 check_header sys/resource.h
5789 check_header sys/select.h
5790 check_header sys/time.h
5791 check_header sys/un.h
5792 check_header termios.h
5793 check_header unistd.h
5794 check_header valgrind/valgrind.h
5795 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5796 check_header windows.h
5797 check_header X11/extensions/XvMClib.h
5798 check_header asm/types.h
5799
5800 # it seems there are versions of clang in some distros that try to use the
5801 # gcc headers, which explodes for stdatomic
5802 # so we also check that atomics actually work here
5803 check_builtin stdatomic stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0)"
5804
5805 check_lib advapi32 "windows.h"            RegCloseKey          -ladvapi32
5806 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
5807 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
5808 check_lib wincrypt "windows.h wincrypt.h" CryptGenRandom       -ladvapi32
5809 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
5810
5811 check_lib android android/native_window.h ANativeWindow_acquire -landroid
5812 check_lib mediandk "stdint.h media/NdkImage.h" AImage_delete -lmediandk
5813 check_lib camera2ndk "stdbool.h stdint.h camera/NdkCameraManager.h" ACameraManager_create -lcamera2ndk
5814
5815 enabled appkit       && check_apple_framework AppKit
5816 enabled audiotoolbox && check_apple_framework AudioToolbox
5817 enabled avfoundation && check_apple_framework AVFoundation
5818 enabled coreimage    && check_apple_framework CoreImage
5819 enabled videotoolbox && check_apple_framework VideoToolbox
5820
5821 check_apple_framework CoreFoundation
5822 check_apple_framework CoreMedia
5823 check_apple_framework CoreVideo
5824
5825 enabled avfoundation && {
5826     disable coregraphics applicationservices
5827     check_lib coregraphics        CoreGraphics/CoreGraphics.h               CGGetActiveDisplayList "-framework CoreGraphics" ||
5828     check_lib applicationservices ApplicationServices/ApplicationServices.h CGGetActiveDisplayList "-framework ApplicationServices"; }
5829
5830 enabled videotoolbox && {
5831     check_lib coreservices CoreServices/CoreServices.h UTGetOSTypeFromString "-framework CoreServices"
5832     check_func_headers CoreMedia/CMFormatDescription.h kCMVideoCodecType_HEVC "-framework CoreMedia"
5833 }
5834
5835 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5836
5837 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5838 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5839 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5840 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5841 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5842
5843 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
5844 check_type "va/va.h va/va_dec_vp8.h" "VAPictureParameterBufferVP8"
5845 check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
5846 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
5847 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
5848 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
5849 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
5850 check_type "va/va.h va/va_enc_mpeg2.h" "VAEncPictureParameterBufferMPEG2"
5851 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
5852 check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
5853
5854 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5855
5856 if ! disabled ffnvcodec; then
5857     check_pkg_config ffnvcodec "ffnvcodec >= 8.0.14.1" \
5858         "ffnvcodec/nvEncodeAPI.h ffnvcodec/dynlink_cuda.h ffnvcodec/dynlink_cuviddec.h ffnvcodec/dynlink_nvcuvid.h" ""
5859 fi
5860
5861 check_cpp_condition winrt windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)"
5862
5863 if ! disabled w32threads && ! enabled pthreads; then
5864     check_func_headers "windows.h process.h" _beginthreadex &&
5865         check_type "windows.h" CONDITION_VARIABLE &&
5866         enable w32threads || disable w32threads
5867     if ! enabled w32threads && enabled winrt; then
5868         check_func_headers "windows.h" CreateThread &&
5869             enable w32threads || disable w32threads
5870     fi
5871 fi
5872
5873 # check for some common methods of building with pthread support
5874 # do this before the optional library checks as some of them require pthreads
5875 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5876     if check_lib pthreads pthread.h pthread_join   -pthread &&
5877        check_lib pthreads pthread.h pthread_create -pthread; then
5878         add_cflags -pthread
5879     elif check_lib pthreads pthread.h pthread_join   -pthreads &&
5880          check_lib pthreads pthread.h pthread_create -pthreads; then
5881         add_cflags -pthreads
5882     elif check_lib pthreads pthread.h pthread_join   -ldl -pthread &&
5883          check_lib pthreads pthread.h pthread_create -ldl -pthread; then
5884         add_cflags -ldl -pthread
5885     elif check_lib pthreads pthread.h pthread_join   -lpthreadGC2 &&
5886          check_lib pthreads pthread.h pthread_create -lpthreadGC2; then
5887         :
5888     elif check_lib pthreads pthread.h pthread_join   -lpthread &&
5889          check_lib pthreads pthread.h pthread_create -lpthread; then
5890         :
5891     elif check_func pthread_join && check_func pthread_create; then
5892         enable pthreads
5893     fi
5894     check_cc pthreads "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER"
5895
5896     if enabled pthreads; then
5897         check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
5898         check_func pthread_cancel $pthreads_extralibs
5899     fi
5900 fi
5901
5902 enabled  zlib && check_lib zlib   zlib.h      zlibVersion    -lz
5903 enabled bzlib && check_lib bzlib bzlib.h BZ2_bzlibVersion    -lbz2
5904 enabled  lzma && check_lib lzma   lzma.h lzma_version_number -llzma
5905
5906 # On some systems dynamic loading requires no extra linker flags
5907 check_lib libdl dlfcn.h "dlopen dlsym" || check_lib libdl dlfcn.h "dlopen dlsym" -ldl
5908
5909 check_lib libm math.h sin -lm
5910
5911 atan2f_args=2
5912 copysign_args=2
5913 hypot_args=2
5914 ldexpf_args=2
5915 powf_args=2
5916
5917 for func in $MATH_FUNCS; do
5918     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
5919 done
5920
5921 for func in $COMPLEX_FUNCS; do
5922     eval check_complexfunc $func \${${func}_args:-1}
5923 done
5924
5925 # these are off by default, so fail if requested and not available
5926 enabled cuda_sdk          && require cuda_sdk cuda.h cuCtxCreate -lcuda
5927 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
5928 enabled decklink          && { require_header DeckLinkAPI.h &&
5929                                { test_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a060100" || die "ERROR: Decklink API version must be >= 10.6.1."; } }
5930 enabled libndi_newtek     && require_header Processing.NDI.Lib.h
5931 enabled frei0r            && require_header frei0r.h
5932 enabled gmp               && require gmp gmp.h mpz_export -lgmp
5933 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init
5934 enabled jni               && { [ $target_os = "android" ] && check_header jni.h && enabled pthreads || die "ERROR: jni not found"; }
5935 enabled ladspa            && require_header ladspa.h
5936 enabled libaom            && require_pkg_config libaom "aom >= 0.1.0" aom/aom_codec.h aom_codec_version
5937 enabled lv2               && require_pkg_config lv2 lilv-0 "lilv-0/lilv/lilv.h" lilv_world_new
5938 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5939 enabled libass            && require_pkg_config libass libass ass/ass.h ass_library_init
5940 enabled libbluray         && require_pkg_config libbluray libbluray libbluray/bluray.h bd_open
5941 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
5942 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5943                              { check_lib libcelt celt/celt.h celt_decoder_create_custom -lcelt0 ||
5944                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5945 enabled libcaca           && require_pkg_config libcaca caca caca.h caca_create_canvas
5946 enabled libcodec2         && require libcodec2 codec2/codec2.h codec2_create -lcodec2
5947 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
5948 enabled libdrm            && require_pkg_config libdrm libdrm xf86drm.h drmGetVersion
5949 enabled libfdk_aac        && { check_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
5950                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
5951                                  warn "using libfdk without pkg-config"; } }
5952 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"
5953 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_extralibs
5954 enabled fontconfig        && enable libfontconfig
5955 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
5956 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
5957 enabled libfribidi        && require_pkg_config libfribidi fribidi fribidi.h fribidi_version_info
5958 enabled libgme            && { check_pkg_config libgme libgme gme/gme.h gme_new_emu ||
5959                                require libgme gme/gme.h gme_new_emu -lgme -lstdc++; }
5960 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
5961                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
5962                                done || die "ERROR: libgsm not found"; }
5963 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc $pthreads_extralibs
5964 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
5965 # While it may appear that require is being used as a pkg-config
5966 # fallback for libmfx, it is actually being used to detect a different
5967 # installation route altogether.  If libmfx is installed via the Intel
5968 # Media SDK or Intel Media Server Studio, these don't come with
5969 # pkg-config support.  Instead, users should make sure that the build
5970 # can find the libraries and headers through other means.
5971 enabled libmfx            && { check_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit ||
5972                                { require libmfx "mfx/mfxvideo.h" MFXInit "-llibmfx $advapi32_extralibs" && warn "using libmfx without pkg-config"; } }
5973 enabled libmodplug        && require_pkg_config libmodplug libmodplug libmodplug/modplug.h ModPlug_Load
5974 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame $libm_extralibs
5975 enabled libmysofa         && require libmysofa "mysofa.h" mysofa_load -lmysofa $zlib_extralibs
5976 enabled libnpp            && { check_lib libnpp npp.h nppGetLibVersion -lnppig -lnppicc -lnppc ||
5977                                check_lib libnpp npp.h nppGetLibVersion -lnppi -lnppc ||
5978                                die "ERROR: libnpp not found"; }
5979 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
5980 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
5981 enabled libopencv         && { check_header opencv2/core/core_c.h &&
5982                                { check_pkg_config libopencv opencv opencv2/core/core_c.h cvCreateImageHeader ||
5983                                  require libopencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
5984                                require_pkg_config libopencv opencv opencv/cxcore.h cvCreateImageHeader; }
5985 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
5986 enabled libopenjpeg       && { check_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version ||
5987                                { require_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } }
5988 enabled libopenmpt        && require_pkg_config libopenmpt "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create -lstdc++ && append libopenmpt_extralibs "-lstdc++"
5989 enabled libopus           && {
5990     enabled libopus_decoder && {
5991         require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
5992     }
5993     enabled libopus_encoder && {
5994         require_pkg_config libopus opus opus_multistream.h opus_multistream_surround_encoder_create
5995     }
5996 }
5997 enabled libpulse          && require_pkg_config libpulse libpulse pulse/pulseaudio.h pa_context_new
5998 enabled librsvg           && require_pkg_config librsvg librsvg-2.0 librsvg-2.0/librsvg/rsvg.h rsvg_handle_render_cairo
5999 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
6000 enabled librubberband     && require_pkg_config librubberband "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new -lstdc++ && append librubberband_extralibs "-lstdc++"
6001 enabled libshine          && require_pkg_config libshine shine shine/layer3.h shine_encode_buffer
6002 enabled libsmbclient      && { check_pkg_config libsmbclient smbclient libsmbclient.h smbc_init ||
6003                                require libsmbclient libsmbclient.h smbc_init -lsmbclient; }
6004 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy -lstdc++
6005 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
6006 enabled libssh            && require_pkg_config libssh libssh libssh/sftp.h sftp_init
6007 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init
6008 enabled libtesseract      && require_pkg_config libtesseract tesseract tesseract/capi.h TessBaseAPICreate
6009 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
6010 enabled libtls            && require_pkg_config libtls libtls tls.h tls_configure
6011 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
6012                              { check_lib libtwolame twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
6013                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
6014 enabled libv4l2           && require_pkg_config libv4l2 libv4l2 libv4l2.h v4l2_ioctl
6015 enabled libvidstab        && require_pkg_config libvidstab "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
6016 enabled libvmaf           && require_pkg_config libvmaf "libvmaf >= 0.6.2" libvmaf.h compute_vmaf
6017 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
6018 enabled libvorbis         && require_pkg_config libvorbis vorbis vorbis/codec.h vorbis_info_init &&
6019                              require_pkg_config libvorbisenc vorbisenc vorbis/vorbisenc.h vorbis_encode_init
6020
6021 enabled libvpx            && {
6022     enabled libvpx_vp8_decoder && {
6023         check_pkg_config libvpx_vp8_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
6024             check_lib libvpx_vp8_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_dec_init_ver VPX_IMG_FMT_HIGHBITDEPTH" -lvpx ||
6025                 die "ERROR: libvpx decoder version must be >=1.4.0";
6026     }
6027     enabled libvpx_vp8_encoder && {
6028         check_pkg_config libvpx_vp8_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
6029             check_lib libvpx_vp8_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VPX_IMG_FMT_HIGHBITDEPTH" -lvpx ||
6030                 die "ERROR: libvpx encoder version must be >=1.4.0";
6031     }
6032     enabled libvpx_vp9_decoder && {
6033         check_pkg_config libvpx_vp9_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
6034             check_lib libvpx_vp9_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx VPX_IMG_FMT_HIGHBITDEPTH" "-lvpx $libm_extralibs"
6035     }
6036     enabled libvpx_vp9_encoder && {
6037         check_pkg_config libvpx_vp9_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
6038             check_lib libvpx_vp9_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VPX_IMG_FMT_HIGHBITDEPTH" "-lvpx $libm_extralibs"
6039     }
6040     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
6041         die "libvpx enabled but no supported decoders found"
6042     fi
6043 }
6044
6045 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
6046 enabled libwebp           && {
6047     enabled libwebp_encoder      && require_pkg_config libwebp "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
6048     enabled libwebp_anim_encoder && check_pkg_config libwebp_anim_encoder "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit; }
6049 enabled libx264           && { check_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode ||
6050                                { require libx264 "stdint.h x264.h" x264_encoder_encode "-lx264 $pthreads_extralibs $libm_extralibs" &&
6051                                  warn "using libx264 without pkg-config"; } } &&
6052                              require_cpp_condition x264.h "X264_BUILD >= 118" &&
6053                              check_cpp_condition libx262 x264.h "X264_MPEG2"
6054 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
6055                              require_cpp_condition x265.h "X265_BUILD >= 68"
6056 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode "-lxavs $pthreads_extralibs $libm_extralibs"
6057 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
6058 enabled libzimg           && require_pkg_config libzimg "zimg >= 2.7.0" zimg.h zimg_get_api_version
6059 enabled libzmq            && require_pkg_config libzmq libzmq zmq.h zmq_ctx_new
6060 enabled libzvbi           && require_pkg_config libzvbi zvbi-0.2 libzvbi.h vbi_decoder_new &&
6061                              { test_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
6062                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
6063 enabled libxml2           && require_pkg_config libxml2 libxml-2.0 libxml2/libxml/xmlversion.h xmlCheckVersion
6064 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
6065 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
6066                                { ! enabled cross_compile &&
6067                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
6068                                  add_ldflags -L/opt/vc/lib/ &&
6069                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
6070                                die "ERROR: mmal not found" &&
6071                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
6072 enabled openal            && { { for al_extralibs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
6073                                check_lib openal 'AL/al.h' alGetError "${al_extralibs}" && break; done } ||
6074                                die "ERROR: openal not found"; } &&
6075                              { test_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
6076                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
6077 enabled opencl            && { check_lib opencl OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
6078                                check_lib opencl CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
6079                                die "ERROR: opencl not found"; } &&
6080                              { test_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
6081                                test_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
6082                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
6083 enabled opengl            && { check_lib opengl GL/glx.h glXGetProcAddress "-lGL" ||
6084                                check_lib opengl windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
6085                                check_lib opengl OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
6086                                check_lib opengl ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
6087                                die "ERROR: opengl not found."
6088                              }
6089 enabled omx               && require_header OMX_Core.h
6090 enabled omx_rpi           && { check_header OMX_Core.h ||
6091                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_header OMX_Core.h ; } ||
6092                                die "ERROR: OpenMAX IL headers not found"; } && enable omx
6093 enabled openssl           && { check_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
6094                                check_pkg_config openssl openssl openssl/ssl.h SSL_library_init ||
6095                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
6096                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
6097                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
6098                                die "ERROR: openssl not found"; }
6099 enabled rkmpp             && { require_pkg_config rkmpp rockchip_mpp  rockchip/rk_mpi.h mpp_create &&
6100                                require_pkg_config rockchip_mpp "rockchip_mpp >= 1.3.7" rockchip/rk_mpi.h mpp_create &&
6101                                { enabled libdrm ||
6102                                  die "ERROR: rkmpp requires --enable-libdrm"; }
6103                              }
6104
6105 if enabled gcrypt; then
6106     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
6107     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
6108         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
6109         gcrypt_extralibs=$("${GCRYPT_CONFIG}" --libs)
6110         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_extralibs ||
6111             die "ERROR: gcrypt not found"
6112         add_cflags $gcrypt_cflags
6113     else
6114         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
6115     fi
6116 fi
6117
6118 if enabled sdl2; then
6119     SDL2_CONFIG="${cross_prefix}sdl2-config"
6120     test_pkg_config sdl2 "sdl2 >= 2.0.1 sdl2 < 2.1.0" SDL_events.h SDL_PollEvent
6121     if disabled sdl2 && "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
6122         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
6123         sdl2_extralibs=$("${SDL2_CONFIG}" --libs)
6124         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
6125         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
6126         check_func_headers SDL_events.h SDL_PollEvent $sdl2_extralibs $sdl2_cflags &&
6127             enable sdl2
6128     fi
6129     if test $target_os = "mingw32"; then
6130         sdl2_extralibs=$(filter_out '-mwindows' $sdl2_extralibs)
6131     fi
6132 fi
6133
6134 if enabled decklink; then
6135     case $target_os in
6136         mingw32*|mingw64*|win32|win64)
6137             decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
6138             decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
6139             ;;
6140     esac
6141 fi
6142
6143 enabled securetransport &&
6144     check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
6145     check_lib securetransport "Security/SecureTransport.h Security/Security.h" "SSLCreateContext" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" ||
6146         disable securetransport
6147
6148 enabled securetransport &&
6149     check_func SecItemImport "-Wl,-framework,CoreFoundation -Wl,-framework,Security"
6150
6151 enabled schannel &&
6152     check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
6153     test_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" &&
6154     schannel_extralibs="-lsecur32" ||
6155         disable schannel
6156
6157 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
6158 enabled makeinfo \
6159     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
6160     && enable makeinfo_html || disable makeinfo_html
6161 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
6162 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
6163 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
6164 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
6165
6166 # check V4L2 codecs available in the API
6167 check_header linux/fb.h
6168 check_header linux/videodev2.h
6169 test_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6170 check_cc v4l2_m2m linux/videodev2.h "int i = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_VIDEO_M2M | V4L2_BUF_FLAG_LAST;"
6171 check_cc vc1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VC1_ANNEX_G;"
6172 check_cc mpeg1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG1;"
6173 check_cc mpeg2_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG2;"
6174 check_cc mpeg4_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG4;"
6175 check_cc hevc_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_HEVC;"
6176 check_cc h263_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H263;"
6177 check_cc h264_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H264;"
6178 check_cc vp8_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP8;"
6179 check_cc vp9_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP9;"
6180
6181 check_header sys/videoio.h
6182 test_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6183
6184 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
6185 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
6186 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
6187 # w32api 3.12 had it defined wrong
6188 check_cpp_condition vfwcap_defines vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER"
6189
6190 check_type "dshow.h" IBaseFilter
6191
6192 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
6193 check_header "dev/bktr/ioctl_meteor.h dev/bktr/ioctl_bt848.h"                   ||
6194     check_header "machine/ioctl_meteor.h machine/ioctl_bt848.h"                 ||
6195     check_header "dev/video/meteor/ioctl_meteor.h dev/video/bktr/ioctl_bt848.h" ||
6196     check_header "dev/ic/bt8xx.h"
6197
6198 if check_struct sys/soundcard.h audio_buf_info bytes; then
6199     enable_sanitized sys/soundcard.h
6200 else
6201     test_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_sanitized sys/soundcard.h
6202     #include <sys/soundcard.h>
6203     audio_buf_info abc;
6204 EOF
6205 fi
6206
6207 enabled alsa && check_pkg_config alsa alsa "alsa/asoundlib.h" snd_pcm_htimestamp ||
6208     check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound
6209
6210 enabled libjack &&
6211     require_pkg_config libjack jack jack/jack.h jack_port_get_latency_range
6212
6213 enabled sndio && check_lib sndio sndio.h sio_open -lsndio
6214
6215 if enabled libcdio; then
6216     check_pkg_config libcdio libcdio_paranoia "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open ||
6217     check_pkg_config libcdio libcdio_paranoia "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open ||
6218     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6219     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6220     die "ERROR: No usable libcdio/cdparanoia found"
6221 fi
6222
6223 enabled libxcb && check_pkg_config libxcb "xcb >= 1.4" xcb/xcb.h xcb_connect ||
6224     disable libxcb_shm libxcb_shape libxcb_xfixes
6225
6226 if enabled libxcb; then
6227     enabled libxcb_shm    && check_pkg_config libxcb_shm    xcb-shm    xcb/shm.h    xcb_shm_attach
6228     enabled libxcb_shape  && check_pkg_config libxcb_shape  xcb-shape  xcb/shape.h  xcb_shape_get_rectangles
6229     enabled libxcb_xfixes && check_pkg_config libxcb_xfixes xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image
6230 fi
6231
6232 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6233
6234 # d3d11va requires linking directly to dxgi and d3d11 if not building for
6235 # the desktop api partition
6236 test_cpp <<EOF && enable uwp && d3d11va_extralibs="-ldxgi -ld3d11"
6237 #ifdef WINAPI_FAMILY
6238 #include <winapifamily.h>
6239 #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
6240 #error desktop, not uwp
6241 #else
6242 // WINAPI_FAMILY_APP, WINAPI_FAMILY_PHONE_APP => UWP
6243 #endif
6244 #else
6245 #error no family set
6246 #endif
6247 EOF
6248
6249 enabled vaapi &&
6250     check_lib vaapi va/va.h vaInitialize -lva
6251
6252 enabled vaapi &&
6253     check_cc vaapi "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)"
6254
6255 if enabled vaapi; then
6256     check_lib vaapi_drm "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm
6257     check_lib vaapi_x11 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 -lX11
6258 fi
6259
6260 enabled vaapi &&
6261     check_cpp_condition vaapi_1 "va/va.h" "VA_CHECK_VERSION(1, 0, 0)"
6262
6263 if enabled_all opencl libdrm ; then
6264     check_type "CL/cl_intel.h" "clCreateImageFromFdINTEL_fn" &&
6265         enable opencl_drm_beignet
6266     check_func_headers "CL/cl_ext.h" clImportMemoryARM &&
6267         enable opencl_drm_arm
6268 fi
6269
6270 if enabled_all opencl vaapi ; then
6271     enabled opencl_drm_beignet && enable opencl_vaapi_beignet
6272     if enabled libmfx ; then
6273         check_type "CL/cl.h CL/va_ext.h" "clCreateFromVA_APIMediaSurfaceINTEL_fn" &&
6274             enable opencl_vaapi_intel_media
6275     fi
6276 fi
6277
6278 if enabled_all opencl dxva2 ; then
6279     check_type "CL/cl_dx9_media_sharing.h" cl_dx9_surface_info_khr &&
6280         enable opencl_dxva2
6281 fi
6282
6283 if enabled_all opencl d3d11va ; then
6284     check_type "CL/cl_d3d11.h" clGetDeviceIDsFromD3D11KHR_fn &&
6285         enable opencl_d3d11
6286 fi
6287
6288 enabled vdpau &&
6289     check_cpp_condition vdpau vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP"
6290
6291 enabled vdpau &&
6292     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
6293
6294 enabled crystalhd && check_lib crystalhd "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd
6295
6296 if enabled x86; then
6297     case $target_os in
6298         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6299             ;;
6300         *)
6301             disable ffnvcodec cuvid nvdec nvenc
6302             ;;
6303     esac
6304 else
6305     disable ffnvcodec cuvid nvdec nvenc
6306 fi
6307
6308 enabled ffnvcodec && enable cuda
6309
6310 enabled nvenc &&
6311     test_cc -I$source_path <<EOF || disable nvenc
6312 #include <ffnvcodec/nvEncodeAPI.h>
6313 NV_ENCODE_API_FUNCTION_LIST flist;
6314 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6315 int main(void) { return 0; }
6316 EOF
6317
6318 enabled amf &&
6319     check_cpp_condition amf "AMF/core/Version.h" \
6320         "(AMF_VERSION_MAJOR << 48 | AMF_VERSION_MINOR << 32 | AMF_VERSION_RELEASE << 16 | AMF_VERSION_BUILD_NUM) >= 0x0001000400040001"
6321
6322 # Funny iconv installations are not unusual, so check it after all flags have been set
6323 if enabled libc_iconv; then
6324     check_func_headers iconv.h iconv
6325 elif enabled iconv; then
6326     check_func_headers iconv.h iconv || check_lib iconv iconv.h iconv -liconv
6327 fi
6328
6329 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6330
6331 # add some useful compiler flags if supported
6332 check_cflags -Wdeclaration-after-statement
6333 check_cflags -Wall
6334 check_cflags -Wdisabled-optimization
6335 check_cflags -Wpointer-arith
6336 check_cflags -Wredundant-decls
6337 check_cflags -Wwrite-strings
6338 check_cflags -Wtype-limits
6339 check_cflags -Wundef
6340 check_cflags -Wmissing-prototypes
6341 check_cflags -Wno-pointer-to-int-cast
6342 check_cflags -Wstrict-prototypes
6343 check_cflags -Wempty-body
6344
6345 if enabled extra_warnings; then
6346     check_cflags -Wcast-qual
6347     check_cflags -Wextra
6348     check_cflags -Wpedantic
6349 fi
6350
6351 check_disable_warning(){
6352     warning_flag=-W${1#-Wno-}
6353     test_cflags $unknown_warning_flags $warning_flag && add_cflags $1
6354 }
6355
6356 test_cflags -Werror=unused-command-line-argument &&
6357     append unknown_warning_flags "-Werror=unused-command-line-argument"
6358 test_cflags -Werror=unknown-warning-option &&
6359     append unknown_warning_flags "-Werror=unknown-warning-option"
6360
6361 check_disable_warning -Wno-parentheses
6362 check_disable_warning -Wno-switch
6363 check_disable_warning -Wno-format-zero-length
6364 check_disable_warning -Wno-pointer-sign
6365 check_disable_warning -Wno-unused-const-variable
6366 check_disable_warning -Wno-bool-operation
6367
6368 check_disable_warning_headers(){
6369     warning_flag=-W${1#-Wno-}
6370     test_cflags $warning_flag && add_cflags_headers $1
6371 }
6372
6373 check_disable_warning_headers -Wno-deprecated-declarations
6374 check_disable_warning_headers -Wno-unused-variable
6375
6376 test_cc <<EOF && enable blocks_extension
6377 void (^block)(void);
6378 EOF
6379
6380 # add some linker flags
6381 check_ldflags -Wl,--warn-common
6382 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6383 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir && add_ldsoflags -Wl,-rpath,$libdir
6384 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6385
6386 # add some strip flags
6387 check_stripflags -x
6388
6389 enabled neon_clobber_test &&
6390     check_ldflags -Wl,--wrap,avcodec_open2              \
6391                   -Wl,--wrap,avcodec_decode_audio4      \
6392                   -Wl,--wrap,avcodec_decode_video2      \
6393                   -Wl,--wrap,avcodec_decode_subtitle2   \
6394                   -Wl,--wrap,avcodec_encode_audio2      \
6395                   -Wl,--wrap,avcodec_encode_video2      \
6396                   -Wl,--wrap,avcodec_encode_subtitle    \
6397                   -Wl,--wrap,avcodec_send_packet        \
6398                   -Wl,--wrap,avcodec_receive_packet     \
6399                   -Wl,--wrap,avcodec_send_frame         \
6400                   -Wl,--wrap,avcodec_receive_frame      \
6401                   -Wl,--wrap,swr_convert                \
6402                   -Wl,--wrap,avresample_convert ||
6403     disable neon_clobber_test
6404
6405 enabled xmm_clobber_test &&
6406     check_ldflags -Wl,--wrap,avcodec_open2              \
6407                   -Wl,--wrap,avcodec_decode_audio4      \
6408                   -Wl,--wrap,avcodec_decode_video2      \
6409                   -Wl,--wrap,avcodec_decode_subtitle2   \
6410                   -Wl,--wrap,avcodec_encode_audio2      \
6411                   -Wl,--wrap,avcodec_encode_video2      \
6412                   -Wl,--wrap,avcodec_encode_subtitle    \
6413                   -Wl,--wrap,avcodec_send_packet        \
6414                   -Wl,--wrap,avcodec_receive_packet     \
6415                   -Wl,--wrap,avcodec_send_frame         \
6416                   -Wl,--wrap,avcodec_receive_frame      \
6417                   -Wl,--wrap,swr_convert                \
6418                   -Wl,--wrap,avresample_convert         \
6419                   -Wl,--wrap,sws_scale ||
6420     disable xmm_clobber_test
6421
6422 check_ld "cc" proper_dce <<EOF
6423 extern const int array[512];
6424 static inline int func(void) { return array[0]; }
6425 int main(void) { return 0; }
6426 EOF
6427
6428 if enabled proper_dce; then
6429     echo "X { local: *; };" > $TMPV
6430     if test_ldflags -Wl,${version_script},$TMPV; then
6431         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6432         quotes='""'
6433         test_cc <<EOF && enable symver_asm_label
6434 void ff_foo(void) __asm__ ("av_foo@VERSION");
6435 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6436 EOF
6437         test_cc <<EOF && enable symver_gnu_asm
6438 __asm__(".symver ff_foo,av_foo@VERSION");
6439 void ff_foo(void) {}
6440 EOF
6441     fi
6442 fi
6443
6444 if [ -z "$optflags" ]; then
6445     if enabled small; then
6446         optflags=$cflags_size
6447     elif enabled optimizations; then
6448         optflags=$cflags_speed
6449     else
6450         optflags=$cflags_noopt
6451     fi
6452 fi
6453
6454 if [ -z "$nvccflags" ]; then
6455     nvccflags=$nvccflags_default
6456 fi
6457
6458 if enabled x86_64 || enabled ppc64 || enabled aarch64; then
6459     nvccflags="$nvccflags -m64"
6460 else
6461     nvccflags="$nvccflags -m32"
6462 fi
6463
6464 check_optflags(){
6465     check_cflags "$@"
6466     enabled lto && check_ldflags "$@"
6467 }
6468
6469 check_optflags $optflags
6470 check_optflags -fno-math-errno
6471 check_optflags -fno-signed-zeros
6472
6473 if enabled lto; then
6474     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6475     check_cflags  -flto
6476     check_ldflags -flto $cpuflags
6477     disable inline_asm_direct_symbol_refs
6478 fi
6479
6480 enabled ftrapv && check_cflags -ftrapv
6481
6482 test_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6483 int x;
6484 EOF
6485
6486
6487 if enabled icc; then
6488     # Just warnings, no remarks
6489     check_cflags -w1
6490     # -wd: Disable following warnings
6491     # 144, 167, 556: -Wno-pointer-sign
6492     # 188: enumerated type mixed with another type
6493     # 1292: attribute "foo" ignored
6494     # 1419: external declaration in primary source file
6495     # 10006: ignoring unknown option -fno-signed-zeros
6496     # 10148: ignoring unknown option -Wno-parentheses
6497     # 10156: ignoring option '-W'; no argument required
6498     # 13200: No EMMS instruction before call to function
6499     # 13203: No EMMS instruction before return from function
6500     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6501     # 11030: Warning unknown option --as-needed
6502     # 10156: ignoring option '-export'; no argument required
6503     check_ldflags -wd10156,11030
6504     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6505     enable ebp_available
6506     # The test above does not test linking
6507     enabled lto && disable symver_asm_label
6508     if enabled x86_32; then
6509         icc_version=$($cc -dumpversion)
6510         test ${icc_version%%.*} -ge 11 &&
6511             check_cflags -falign-stack=maintain-16-byte ||
6512             disable aligned_stack
6513     fi
6514 elif enabled gcc; then
6515     check_optflags -fno-tree-vectorize
6516     check_cflags -Werror=format-security
6517     check_cflags -Werror=implicit-function-declaration
6518     check_cflags -Werror=missing-prototypes
6519     check_cflags -Werror=return-type
6520     check_cflags -Werror=vla
6521     check_cflags -Wformat
6522     check_cflags -fdiagnostics-color=auto
6523     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6524 elif enabled llvm_gcc; then
6525     check_cflags -mllvm -stack-alignment=16
6526 elif enabled clang; then
6527     check_cflags -mllvm -stack-alignment=16
6528     check_cflags -mstack-alignment=16
6529     check_cflags -Qunused-arguments
6530     check_cflags -Werror=implicit-function-declaration
6531     check_cflags -Werror=missing-prototypes
6532     check_cflags -Werror=return-type
6533 elif enabled cparser; then
6534     add_cflags -Wno-missing-variable-declarations
6535     add_cflags -Wno-empty-statement
6536 elif enabled armcc; then
6537     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6538     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6539     # 2523: use of inline assembly is deprecated
6540     add_cflags -W${armcc_opt},--diag_suppress=2523
6541     add_cflags -W${armcc_opt},--diag_suppress=1207
6542     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6543     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6544     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6545     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6546 elif enabled pathscale; then
6547     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6548     disable inline_asm
6549 elif enabled_any msvc icl; then
6550     enabled x86_32 && disable aligned_stack
6551     enabled_all x86_32 debug && add_cflags -Oy-
6552     enabled debug && add_ldflags -debug
6553     enable pragma_deprecated
6554     if enabled icl; then
6555         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6556         # (correctly) on icl 13.x.
6557         test_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6558             add_cflags -Qansi-alias
6559         # Some inline asm is not compilable in debug
6560         if enabled debug; then
6561             disable ebp_available
6562             disable ebx_available
6563         fi
6564     fi
6565     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6566     check_cpp_condition log2 crtversion.h "_VC_CRT_MAJOR_VERSION >= 12"
6567     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6568     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6569     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6570     # MSVC 2013 and newer can handle it fine.
6571     # If this declspec fails, force including stdlib.h before the restrict redefinition
6572     # happens in config.h.
6573     if [ $restrict_keyword != restrict ]; then
6574         test_cc <<EOF || add_cflags -FIstdlib.h
6575 __declspec($restrict_keyword) void *foo(int);
6576 EOF
6577     fi
6578     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6579     # Issue has been fixed in MSVC v19.00.24218.
6580     test_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6581         check_cflags -d2SSAOptimizer-
6582     # enable utf-8 source processing on VS2015 U2 and newer
6583     test_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6584         add_cflags -utf-8
6585 fi
6586
6587 for pfx in "" host_; do
6588     varname=${pfx%_}cc_type
6589     eval "type=\$$varname"
6590     if [ "$type" = "msvc" ]; then
6591         test_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6592 static inline int foo(int a) { return a; }
6593 EOF
6594     fi
6595 done
6596
6597 case $as_type in
6598     clang)
6599         add_asflags -Qunused-arguments
6600     ;;
6601 esac
6602
6603 case $ld_type in
6604     clang)
6605         check_ldflags -Qunused-arguments
6606     ;;
6607 esac
6608
6609 enable frame_thread_encoder
6610
6611 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6612
6613 check_deps $CONFIG_LIST       \
6614            $CONFIG_EXTRA      \
6615            $HAVE_LIST         \
6616            $ALL_COMPONENTS    \
6617
6618 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"
6619 enabled avresample && warn "Building with deprecated library libavresample"
6620
6621 if test $target_os = "haiku"; then
6622     disable memalign
6623     disable posix_memalign
6624 fi
6625
6626 flatten_extralibs(){
6627     unset nested_entries
6628     list_name=$1
6629     eval list=\$${1}
6630     for entry in $list; do
6631         entry_copy=$entry
6632         resolve entry_copy
6633         append nested_entries $(filter '*_extralibs' $entry_copy)
6634         flat_entries=$(filter_out '*_extralibs' $entry_copy)
6635         eval $entry="\$flat_entries"
6636     done
6637     append $list_name "$nested_entries"
6638
6639     resolve nested_entries
6640     if test -n "$(filter '*_extralibs' $nested_entries)"; then
6641         flatten_extralibs $list_name
6642     fi
6643 }
6644
6645 flatten_extralibs_wrapper(){
6646     list_name=$1
6647     flatten_extralibs $list_name
6648     unique $list_name
6649     resolve $list_name
6650     eval $list_name=\$\(\$ldflags_filter \$$list_name\)
6651     eval printf \''%s'\' \""\$$list_name"\"
6652 }
6653
6654 for linkunit in $LIBRARY_LIST; do
6655     unset current_extralibs
6656     eval components=\$$(toupper ${linkunit})_COMPONENTS_LIST
6657     for comp in ${components}; do
6658         enabled $comp || continue
6659         comp_extralibs="${comp}_extralibs"
6660         append current_extralibs $comp_extralibs
6661     done
6662     eval prepend ${linkunit}_extralibs $current_extralibs
6663 done
6664
6665 for linkunit in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
6666     eval ${linkunit}_extralibs=\$\(flatten_extralibs_wrapper ${linkunit}_extralibs\)
6667 done
6668
6669 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6670
6671 for thread in $THREADS_LIST; do
6672     if enabled $thread; then
6673         test -n "$thread_type" &&
6674             die "ERROR: Only one thread type must be selected." ||
6675             thread_type="$thread"
6676     fi
6677 done
6678
6679 if disabled stdatomic; then
6680     if enabled atomics_gcc; then
6681         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
6682     elif enabled atomics_win32; then
6683         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
6684     elif enabled atomics_suncc; then
6685         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
6686     elif enabled pthreads; then
6687         add_compat atomics/pthread/stdatomic.o
6688         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
6689     else
6690         enabled threads && die "Threading is enabled, but no atomics are available"
6691         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
6692     fi
6693 fi
6694
6695 # Check if requested libraries were found.
6696 for lib in $AUTODETECT_LIBS; do
6697     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
6698 done
6699
6700 enabled zlib && add_cppflags -DZLIB_CONST
6701
6702 # conditional library dependencies, in linking order
6703 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6704 enabled afir_filter         && prepend avfilter_deps "avcodec"
6705 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6706 enabled aresample_filter    && prepend avfilter_deps "swresample"
6707 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6708 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6709 enabled convolve_filter     && prepend avfilter_deps "avcodec"
6710 enabled deconvolve_filter   && prepend avfilter_deps "avcodec"
6711 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6712 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6713 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6714 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6715 enabled firequalizer_filter && prepend avfilter_deps "avcodec"
6716 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6717 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6718 enabled pan_filter          && prepend avfilter_deps "swresample"
6719 enabled pp_filter           && prepend avfilter_deps "postproc"
6720 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6721 enabled resample_filter && prepend avfilter_deps "avresample"
6722 enabled sab_filter          && prepend avfilter_deps "swscale"
6723 enabled scale_filter    && prepend avfilter_deps "swscale"
6724 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6725 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6726 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6727 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6728 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6729 enabled signature_filter    && prepend avfilter_deps "avcodec avformat"
6730 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6731 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6732 enabled spp_filter          && prepend avfilter_deps "avcodec"
6733 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6734 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6735 enabled zoompan_filter      && prepend avfilter_deps "swscale"
6736
6737 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6738
6739 #FIXME
6740 enabled sdl2_outdev     && add_cflags $(filter_out '-Dmain=SDL_main' $sdl2_cflags)
6741
6742 enabled opus_decoder    && prepend avcodec_deps "swresample"
6743
6744 expand_deps(){
6745     lib_deps=${1}_deps
6746     eval "deps=\$$lib_deps"
6747     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
6748     unique $lib_deps
6749 }
6750
6751 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6752 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6753
6754 map 'expand_deps $v' $LIBRARY_LIST
6755
6756 if test "$quiet" != "yes"; then
6757
6758 echo "install prefix            $prefix"
6759 echo "source path               $source_path"
6760 echo "C compiler                $cc"
6761 echo "C library                 $libc_type"
6762 if test "$host_cc" != "$cc"; then
6763     echo "host C compiler           $host_cc"
6764     echo "host C library            $host_libc_type"
6765 fi
6766 echo "ARCH                      $arch ($cpu)"
6767 if test "$build_suffix" != ""; then
6768     echo "build suffix              $build_suffix"
6769 fi
6770 if test "$progs_suffix" != ""; then
6771     echo "progs suffix              $progs_suffix"
6772 fi
6773 if test "$extra_version" != ""; then
6774     echo "version string suffix     $extra_version"
6775 fi
6776 echo "big-endian                ${bigendian-no}"
6777 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6778 if enabled x86; then
6779     echo "standalone assembly       ${x86asm-no}"
6780     echo "x86 assembler             ${x86asmexe}"
6781     echo "MMX enabled               ${mmx-no}"
6782     echo "MMXEXT enabled            ${mmxext-no}"
6783     echo "3DNow! enabled            ${amd3dnow-no}"
6784     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6785     echo "SSE enabled               ${sse-no}"
6786     echo "SSSE3 enabled             ${ssse3-no}"
6787     echo "AESNI enabled             ${aesni-no}"
6788     echo "AVX enabled               ${avx-no}"
6789     echo "AVX2 enabled              ${avx2-no}"
6790     echo "AVX-512 enabled           ${avx512-no}"
6791     echo "XOP enabled               ${xop-no}"
6792     echo "FMA3 enabled              ${fma3-no}"
6793     echo "FMA4 enabled              ${fma4-no}"
6794     echo "i686 features enabled     ${i686-no}"
6795     echo "CMOV is fast              ${fast_cmov-no}"
6796     echo "EBX available             ${ebx_available-no}"
6797     echo "EBP available             ${ebp_available-no}"
6798 fi
6799 if enabled aarch64; then
6800     echo "NEON enabled              ${neon-no}"
6801     echo "VFP enabled               ${vfp-no}"
6802 fi
6803 if enabled arm; then
6804     echo "ARMv5TE enabled           ${armv5te-no}"
6805     echo "ARMv6 enabled             ${armv6-no}"
6806     echo "ARMv6T2 enabled           ${armv6t2-no}"
6807     echo "VFP enabled               ${vfp-no}"
6808     echo "NEON enabled              ${neon-no}"
6809     echo "THUMB enabled             ${thumb-no}"
6810 fi
6811 if enabled mips; then
6812     echo "MIPS FPU enabled          ${mipsfpu-no}"
6813     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
6814     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
6815     echo "MIPS MSA enabled          ${msa-no}"
6816     echo "LOONGSON MMI enabled      ${mmi-no}"
6817 fi
6818 if enabled ppc; then
6819     echo "AltiVec enabled           ${altivec-no}"
6820     echo "VSX enabled               ${vsx-no}"
6821     echo "POWER8 enabled            ${power8-no}"
6822     echo "PPC 4xx optimizations     ${ppc4xx-no}"
6823     echo "dcbzl available           ${dcbzl-no}"
6824 fi
6825 echo "debug symbols             ${debug-no}"
6826 echo "strip symbols             ${stripping-no}"
6827 echo "optimize for size         ${small-no}"
6828 echo "optimizations             ${optimizations-no}"
6829 echo "static                    ${static-no}"
6830 echo "shared                    ${shared-no}"
6831 echo "postprocessing support    ${postproc-no}"
6832 echo "network support           ${network-no}"
6833 echo "threading support         ${thread_type-no}"
6834 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
6835 echo "texi2html enabled         ${texi2html-no}"
6836 echo "perl enabled              ${perl-no}"
6837 echo "pod2man enabled           ${pod2man-no}"
6838 echo "makeinfo enabled          ${makeinfo-no}"
6839 echo "makeinfo supports HTML    ${makeinfo_html-no}"
6840 test -n "$random_seed" &&
6841     echo "random seed               ${random_seed}"
6842 echo
6843
6844 echo "External libraries:"
6845 print_enabled '' $EXTERNAL_LIBRARY_LIST $EXTERNAL_AUTODETECT_LIBRARY_LIST | print_in_columns
6846 echo
6847
6848 echo "External libraries providing hardware acceleration:"
6849 print_enabled '' $HWACCEL_LIBRARY_LIST $HWACCEL_AUTODETECT_LIBRARY_LIST | print_in_columns
6850 echo
6851
6852 echo "Libraries:"
6853 print_enabled '' $LIBRARY_LIST | print_in_columns
6854 echo
6855
6856 echo "Programs:"
6857 print_enabled '' $PROGRAM_LIST | print_in_columns
6858 echo
6859
6860 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
6861     echo "Enabled ${type}s:"
6862     eval list=\$$(toupper $type)_LIST
6863     print_enabled '_*' $list | print_in_columns
6864     echo
6865 done
6866
6867 if test -n "$ignore_tests"; then
6868     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
6869     echo "Ignored FATE tests:"
6870     echo $ignore_tests | print_in_columns
6871     echo
6872 fi
6873
6874 echo "License: $license"
6875
6876 fi # test "$quiet" != "yes"
6877
6878 if test -n "$WARNINGS"; then
6879     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
6880     enabled fatal_warnings && exit 1
6881 fi
6882
6883 test -e Makefile || echo "include $source_path/Makefile" > Makefile
6884
6885 esc(){
6886     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
6887 }
6888
6889 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" > ffbuild/config.fate
6890
6891 enabled stripping || strip="echo skipping strip"
6892 enabled stripping || striptype=""
6893
6894 config_files="$TMPH ffbuild/config.mak doc/config.texi"
6895
6896 cat > ffbuild/config.mak <<EOF
6897 # Automatically generated by configure - do not modify!
6898 ifndef FFMPEG_CONFIG_MAK
6899 FFMPEG_CONFIG_MAK=1
6900 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
6901 prefix=$prefix
6902 LIBDIR=\$(DESTDIR)$libdir
6903 SHLIBDIR=\$(DESTDIR)$shlibdir
6904 INCDIR=\$(DESTDIR)$incdir
6905 BINDIR=\$(DESTDIR)$bindir
6906 DATADIR=\$(DESTDIR)$datadir
6907 DOCDIR=\$(DESTDIR)$docdir
6908 MANDIR=\$(DESTDIR)$mandir
6909 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
6910 INSTALL_NAME_DIR=$install_name_dir
6911 SRC_PATH=$source_path
6912 SRC_LINK=$source_link
6913 ifndef MAIN_MAKEFILE
6914 SRC_PATH:=\$(SRC_PATH:.%=..%)
6915 endif
6916 CC_IDENT=$cc_ident
6917 ARCH=$arch
6918 INTRINSICS=$intrinsics
6919 EXTERN_PREFIX=$extern_prefix
6920 CC=$cc
6921 CXX=$cxx
6922 AS=$as
6923 OBJCC=$objcc
6924 LD=$ld
6925 DEPCC=$dep_cc
6926 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
6927 DEPAS=$as
6928 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
6929 X86ASM=$x86asmexe
6930 DEPX86ASM=$x86asmexe
6931 DEPX86ASMFLAGS=\$(X86ASMFLAGS)
6932 AR=$ar
6933 ARFLAGS=$arflags
6934 AR_O=$ar_o
6935 AR_CMD=$ar
6936 NM_CMD=$nm
6937 RANLIB=$ranlib
6938 STRIP=$strip
6939 STRIPTYPE=$striptype
6940 NVCC=$nvcc
6941 CP=cp -p
6942 LN_S=$ln_s
6943 CPPFLAGS=$CPPFLAGS
6944 CFLAGS=$CFLAGS
6945 CXXFLAGS=$CXXFLAGS
6946 OBJCFLAGS=$OBJCFLAGS
6947 ASFLAGS=$ASFLAGS
6948 NVCCFLAGS=$nvccflags
6949 AS_C=$AS_C
6950 AS_O=$AS_O
6951 OBJCC_C=$OBJCC_C
6952 OBJCC_E=$OBJCC_E
6953 OBJCC_O=$OBJCC_O
6954 CC_C=$CC_C
6955 CC_E=$CC_E
6956 CC_O=$CC_O
6957 CXX_C=$CXX_C
6958 CXX_O=$CXX_O
6959 NVCC_C=$NVCC_C
6960 NVCC_O=$NVCC_O
6961 LD_O=$LD_O
6962 X86ASM_O=$X86ASM_O
6963 LD_LIB=$LD_LIB
6964 LD_PATH=$LD_PATH
6965 DLLTOOL=$dlltool
6966 WINDRES=$windres
6967 DEPWINDRES=$dep_cc
6968 DOXYGEN=$doxygen
6969 LDFLAGS=$LDFLAGS
6970 LDEXEFLAGS=$LDEXEFLAGS
6971 LDSOFLAGS=$LDSOFLAGS
6972 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
6973 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
6974 X86ASMFLAGS=$X86ASMFLAGS
6975 BUILDSUF=$build_suffix
6976 PROGSSUF=$progs_suffix
6977 FULLNAME=$FULLNAME
6978 LIBPREF=$LIBPREF
6979 LIBSUF=$LIBSUF
6980 LIBNAME=$LIBNAME
6981 SLIBPREF=$SLIBPREF
6982 SLIBSUF=$SLIBSUF
6983 EXESUF=$EXESUF
6984 EXTRA_VERSION=$extra_version
6985 CCDEP=$CCDEP
6986 CXXDEP=$CXXDEP
6987 CCDEP_FLAGS=$CCDEP_FLAGS
6988 ASDEP=$ASDEP
6989 ASDEP_FLAGS=$ASDEP_FLAGS
6990 X86ASMDEP=$X86ASMDEP
6991 X86ASMDEP_FLAGS=$X86ASMDEP_FLAGS
6992 CC_DEPFLAGS=$CC_DEPFLAGS
6993 AS_DEPFLAGS=$AS_DEPFLAGS
6994 X86ASM_DEPFLAGS=$X86ASM_DEPFLAGS
6995 HOSTCC=$host_cc
6996 HOSTLD=$host_ld
6997 HOSTCFLAGS=$host_cflags
6998 HOSTCPPFLAGS=$host_cppflags
6999 HOSTEXESUF=$HOSTEXESUF
7000 HOSTLDFLAGS=$host_ldflags
7001 HOSTEXTRALIBS=$host_extralibs
7002 DEPHOSTCC=$host_cc
7003 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
7004 HOSTCCDEP=$HOSTCCDEP
7005 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
7006 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
7007 HOSTCC_C=$HOSTCC_C
7008 HOSTCC_O=$HOSTCC_O
7009 HOSTLD_O=$HOSTLD_O
7010 TARGET_EXEC=$target_exec $target_exec_args
7011 TARGET_PATH=$target_path
7012 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
7013 CFLAGS-ffplay=${sdl2_cflags}
7014 CFLAGS_HEADERS=$CFLAGS_HEADERS
7015 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
7016 EXTRALIBS=$extralibs
7017 COMPAT_OBJS=$compat_objs
7018 INSTALL=$install
7019 LIBTARGET=${LIBTARGET}
7020 SLIBNAME=${SLIBNAME}
7021 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
7022 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
7023 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
7024 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
7025 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
7026 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
7027 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
7028 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
7029 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
7030 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
7031 NOREDZONE_FLAGS=$noredzone_flags
7032 LIBFUZZER_PATH=$libfuzzer_path
7033 IGNORE_TESTS=$ignore_tests
7034 EOF
7035
7036 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> ffbuild/config.mak' $LIBRARY_LIST
7037
7038 for entry in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
7039     eval echo "EXTRALIBS-${entry}=\$${entry}_extralibs" >> ffbuild/config.mak
7040 done
7041
7042 cat > $TMPH <<EOF
7043 /* Automatically generated by configure - do not modify! */
7044 #ifndef FFMPEG_CONFIG_H
7045 #define FFMPEG_CONFIG_H
7046 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
7047 #define FFMPEG_LICENSE "$(c_escape $license)"
7048 #define CONFIG_THIS_YEAR 2018
7049 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
7050 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
7051 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
7052 #define av_restrict $restrict_keyword
7053 #define EXTERN_PREFIX "${extern_prefix}"
7054 #define EXTERN_ASM ${extern_prefix}
7055 #define BUILDSUF "$build_suffix"
7056 #define SLIBSUF "$SLIBSUF"
7057 #define HAVE_MMX2 HAVE_MMXEXT
7058 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
7059 EOF
7060
7061 test -n "$assert_level" &&
7062     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
7063
7064 test -n "$malloc_prefix" &&
7065     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
7066
7067 if enabled x86asm; then
7068     append config_files $TMPASM
7069     cat > $TMPASM <<EOF
7070 ; Automatically generated by configure - do not modify!
7071 EOF
7072 fi
7073
7074 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
7075
7076
7077 mkdir -p doc
7078 mkdir -p tests
7079 mkdir -p tests/api
7080 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
7081
7082 print_config ARCH_   "$config_files" $ARCH_LIST
7083 print_config HAVE_   "$config_files" $HAVE_LIST
7084 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
7085                                      $CONFIG_EXTRA      \
7086                                      $ALL_COMPONENTS    \
7087
7088 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
7089 echo "endif # FFMPEG_CONFIG_MAK" >> ffbuild/config.mak
7090
7091 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
7092 cp_if_changed $TMPH config.h
7093 touch ffbuild/.config
7094
7095 enabled x86asm && cp_if_changed $TMPASM config.asm
7096
7097 cat > $TMPH <<EOF
7098 /* Generated by ffmpeg configure */
7099 #ifndef AVUTIL_AVCONFIG_H
7100 #define AVUTIL_AVCONFIG_H
7101 EOF
7102
7103 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
7104
7105 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
7106
7107 cp_if_changed $TMPH libavutil/avconfig.h
7108
7109 # generate the lists of enabled components
7110 print_enabled_components(){
7111     file=$1
7112     struct_name=$2
7113     name=$3
7114     shift 3
7115     echo "static const $struct_name * const $name[] = {" > $TMPH
7116     for c in $*; do
7117         if enabled $c; then
7118             case $name in
7119                 indev_list)
7120                     c=$(add_suffix _demuxer $(remove_suffix _indev $c))
7121                 ;;
7122                 outdev_list)
7123                     c=$(add_suffix _muxer $(remove_suffix _outdev $c))
7124                 ;;
7125             esac
7126             printf "    &ff_%s,\n" $c >> $TMPH
7127         fi
7128     done
7129     echo "    NULL };" >> $TMPH
7130     cp_if_changed $TMPH $file
7131 }
7132
7133 print_enabled_components libavcodec/codec_list.c AVCodec codec_list $CODEC_LIST
7134 print_enabled_components libavcodec/parser_list.c AVCodecParser parser_list $PARSER_LIST
7135 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
7136 print_enabled_components libavdevice/indev_list.c AVInputFormat indev_list $INDEV_LIST
7137 print_enabled_components libavdevice/outdev_list.c AVOutputFormat outdev_list $OUTDEV_LIST
7138 print_enabled_components libavformat/demuxer_list.c AVInputFormat demuxer_list $DEMUXER_LIST
7139 print_enabled_components libavformat/muxer_list.c AVOutputFormat muxer_list $MUXER_LIST
7140 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
7141
7142 # Settings for pkg-config files
7143
7144 cat > $TMPH <<EOF
7145 # Automatically generated by configure - do not modify!
7146 shared=$shared
7147 build_suffix=$build_suffix
7148 prefix=$prefix
7149 libdir=$libdir
7150 incdir=$incdir
7151 rpath=$(enabled rpath && echo "-Wl,-rpath,\${libdir}")
7152 source_path=${source_path}
7153 LIBPREF=${LIBPREF}
7154 LIBSUF=${LIBSUF}
7155 extralibs_avutil="$avutil_extralibs"
7156 extralibs_avcodec="$avcodec_extralibs"
7157 extralibs_avformat="$avformat_extralibs"
7158 extralibs_avdevice="$avdevice_extralibs"
7159 extralibs_avfilter="$avfilter_extralibs"
7160 extralibs_avresample="$avresample_extralibs"
7161 extralibs_postproc="$postproc_extralibs"
7162 extralibs_swscale="$swscale_extralibs"
7163 extralibs_swresample="$swresample_extralibs"
7164 EOF
7165
7166 for lib in $LIBRARY_LIST; do
7167     lib_deps="$(eval echo \$${lib}_deps)"
7168     echo ${lib}_deps=\"$lib_deps\" >> $TMPH
7169 done
7170
7171 cp_if_changed $TMPH ffbuild/config.sh