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   --disable-ffserver       disable ffserver build
 120
 121 Documentation options:
 122   --disable-doc            do not build documentation
 123   --disable-htmlpages      do not build HTML documentation pages
 124   --disable-manpages       do not build man documentation pages
 125   --disable-podpages       do not build POD documentation pages
 126   --disable-txtpages       do not build text documentation pages
 127
 128 Component options:
 129   --disable-avdevice       disable libavdevice build
 130   --disable-avcodec        disable libavcodec build
 131   --disable-avformat       disable libavformat build
 132   --disable-swresample     disable libswresample build
 133   --disable-swscale        disable libswscale build
 134   --disable-postproc       disable libpostproc build
 135   --disable-avfilter       disable libavfilter build
 136   --enable-avresample      enable libavresample build [no]
 137   --disable-pthreads       disable pthreads [autodetect]
 138   --disable-w32threads     disable Win32 threads [autodetect]
 139   --disable-os2threads     disable OS/2 threads [autodetect]
 140   --disable-network        disable network support [no]
 141   --disable-dct            disable DCT code
 142   --disable-dwt            disable DWT code
 143   --disable-error-resilience disable error resilience code
 144   --disable-lsp            disable LSP code
 145   --disable-lzo            disable LZO decoder code
 146   --disable-mdct           disable MDCT code
 147   --disable-rdft           disable RDFT code
 148   --disable-fft            disable FFT code
 149   --disable-faan           disable floating point AAN (I)DCT code
 150   --disable-pixelutils     disable pixel utils in libavutil
 151
 152 Individual component options:
 153   --disable-everything     disable all components listed below
 154   --disable-encoder=NAME   disable encoder NAME
 155   --enable-encoder=NAME    enable encoder NAME
 156   --disable-encoders       disable all encoders
 157   --disable-decoder=NAME   disable decoder NAME
 158   --enable-decoder=NAME    enable decoder NAME
 159   --disable-decoders       disable all decoders
 160   --disable-hwaccel=NAME   disable hwaccel NAME
 161   --enable-hwaccel=NAME    enable hwaccel NAME
 162   --disable-hwaccels       disable all hwaccels
 163   --disable-muxer=NAME     disable muxer NAME
 164   --enable-muxer=NAME      enable muxer NAME
 165   --disable-muxers         disable all muxers
 166   --disable-demuxer=NAME   disable demuxer NAME
 167   --enable-demuxer=NAME    enable demuxer NAME
 168   --disable-demuxers       disable all demuxers
 169   --enable-parser=NAME     enable parser NAME
 170   --disable-parser=NAME    disable parser NAME
 171   --disable-parsers        disable all parsers
 172   --enable-bsf=NAME        enable bitstream filter NAME
 173   --disable-bsf=NAME       disable bitstream filter NAME
 174   --disable-bsfs           disable all bitstream filters
 175   --enable-protocol=NAME   enable protocol NAME
 176   --disable-protocol=NAME  disable protocol NAME
 177   --disable-protocols      disable all protocols
 178   --enable-indev=NAME      enable input device NAME
 179   --disable-indev=NAME     disable input device NAME
 180   --disable-indevs         disable input devices
 181   --enable-outdev=NAME     enable output device NAME
 182   --disable-outdev=NAME    disable output device NAME
 183   --disable-outdevs        disable output devices
 184   --disable-devices        disable all devices
 185   --enable-filter=NAME     enable filter NAME
 186   --disable-filter=NAME    disable filter NAME
 187   --disable-filters        disable all filters
 188
 189 External library support:
 190
 191   Using any of the following switches will allow FFmpeg to link to the
 192   corresponding external library. All the components depending on that library
 193   will become enabled, if all their other dependencies are met and they are not
 194   explicitly disabled. E.g. --enable-libwavpack will enable linking to
 195   libwavpack and allow the libwavpack encoder to be built, unless it is
 196   specifically disabled with --disable-encoder=libwavpack.
 197
 198   Note that only the system libraries are auto-detected. All the other external
 199   libraries must be explicitly enabled.
 200
 201   Also note that the following help text describes the purpose of the libraries
 202   themselves, not all their features will necessarily be usable by FFmpeg.
 203
 204   --disable-alsa           disable ALSA support [autodetect]
 205   --disable-appkit         disable Apple AppKit framework [autodetect]
 206   --disable-avfoundation   disable Apple AVFoundation framework [autodetect]
 207   --enable-avisynth        enable reading of AviSynth script files [no]
 208   --disable-bzlib          disable bzlib [autodetect]
 209   --disable-coreimage      disable Apple CoreImage framework [autodetect]
 210   --enable-chromaprint     enable audio fingerprinting with chromaprint [no]
 211   --enable-frei0r          enable frei0r video filtering [no]
 212   --enable-gcrypt          enable gcrypt, needed for rtmp(t)e support
 213                            if openssl, librtmp or gmp is not used [no]
 214   --enable-gmp             enable gmp, needed for rtmp(t)e support
 215                            if openssl or librtmp is not used [no]
 216   --enable-gnutls          enable gnutls, needed for https support
 217                            if openssl or libtls is not used [no]
 218   --disable-iconv          disable iconv [autodetect]
 219   --enable-jni             enable JNI support [no]
 220   --enable-ladspa          enable LADSPA audio filtering [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-libdc1394       enable IIDC-1394 grabbing using libdc1394
 229                            and libraw1394 [no]
 230   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
 231   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
 232   --enable-libfontconfig   enable libfontconfig, useful for drawtext filter [no]
 233   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
 234   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
 235   --enable-libgme          enable Game Music Emu via libgme [no]
 236   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 237   --enable-libiec61883     enable iec61883 via libiec61883 [no]
 238   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 239   --enable-libjack         enable JACK audio sound server [no]
 240   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
 241   --enable-libmodplug      enable ModPlug via libmodplug [no]
 242   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 243   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 244   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 245   --enable-libopencv       enable video filtering via libopencv [no]
 246   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
 247   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 248   --enable-libopenmpt      enable decoding tracked files via libopenmpt [no]
 249   --enable-libopus         enable Opus de/encoding via libopus [no]
 250   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 251   --enable-librsvg         enable SVG rasterization via librsvg [no]
 252   --enable-librubberband   enable rubberband needed for rubberband filter [no]
 253   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 254   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 255   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
 256   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
 257   --enable-libsoxr         enable Include libsoxr resampling [no]
 258   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 259   --enable-libssh          enable SFTP protocol via libssh [no]
 260   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
 261   --enable-libtheora       enable Theora encoding via libtheora [no]
 262   --enable-libtls          enable LibreSSL (via libtls), needed for https support
 263                            if openssl or gnutls is not used [no]
 264   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 265   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 266   --enable-libvidstab      enable video stabilization using vid.stab [no]
 267   --enable-libvmaf         enable vmaf filter via libvmaf [no]
 268   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 269   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 270                            native implementation exists [no]
 271   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 272   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 273   --enable-libwebp         enable WebP encoding via libwebp [no]
 274   --enable-libx264         enable H.264 encoding via x264 [no]
 275   --enable-libx265         enable HEVC encoding via x265 [no]
 276   --enable-libxavs         enable AVS encoding via xavs [no]
 277   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
 278   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
 279   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
 280   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
 281   --enable-libxvid         enable Xvid encoding via xvidcore,
 282                            native MPEG-4/Xvid encoder exists [no]
 283   --enable-libxml2         enable XML parsing using the C library libxml2 [no]
 284   --enable-libzimg         enable z.lib, needed for zscale filter [no]
 285   --enable-libzmq          enable message passing via libzmq [no]
 286   --enable-libzvbi         enable teletext support via libzvbi [no]
 287   --enable-lv2             enable LV2 audio filtering [no]
 288   --disable-lzma           disable lzma [autodetect]
 289   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
 290   --enable-libndi_newtek   enable Newteck NDI I/O support [no]
 291   --enable-mediacodec      enable Android MediaCodec support [no]
 292   --enable-libmysofa       enable libmysofa, needed for sofalizer filter [no]
 293   --enable-openal          enable OpenAL 1.1 capture support [no]
 294   --enable-opencl          enable OpenCL processing [no]
 295   --enable-opengl          enable OpenGL rendering [no]
 296   --enable-openssl         enable openssl, needed for https support
 297                            if gnutls or libtls is not used [no]
 298   --disable-sndio          disable sndio support [autodetect]
 299   --disable-schannel       disable SChannel SSP, needed for TLS support on
 300                            Windows if openssl and gnutls are not used [autodetect]
 301   --disable-sdl2           disable sdl2 [autodetect]
 302   --disable-securetransport disable Secure Transport, needed for TLS support
 303                            on OSX if openssl and gnutls are not used [autodetect]
 304   --disable-xlib           disable xlib [autodetect]
 305   --disable-zlib           disable zlib [autodetect]
 306
 307   The following libraries provide various hardware acceleration features:
 308   --disable-amf            disable AMF video encoding code [autodetect]
 309   --disable-audiotoolbox   disable Apple AudioToolbox code [autodetect]
 310   --disable-cuda           disable dynamically linked Nvidia CUDA 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   --enable-libdrm          enable DRM code (Linux) [no]
 316   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
 317   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
 318   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
 319   --disable-nvdec          disable Nvidia video decoding acceleration (via hwaccel) [autodetect]
 320   --disable-nvenc          disable Nvidia video encoding code [autodetect]
 321   --enable-omx             enable OpenMAX IL code [no]
 322   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
 323   --enable-rkmpp           enable Rockchip Media Process Platform code [no]
 324   --disable-v4l2-m2m       disable V4L2 mem2mem code [autodetect]
 325   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
 326   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
 327   --disable-videotoolbox   disable VideoToolbox code [autodetect]
 328
 329 Toolchain options:
 330   --arch=ARCH              select architecture [$arch]
 331   --cpu=CPU                select the minimum required CPU (affects
 332                            instruction selection, may crash on older CPUs)
 333   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 334   --progs-suffix=SUFFIX    program name suffix []
 335   --enable-cross-compile   assume a cross-compiler is used
 336   --sysroot=PATH           root of cross-build tree
 337   --sysinclude=PATH        location of cross-build system headers
 338   --target-os=OS           compiler targets OS [$target_os]
 339   --target-exec=CMD        command to run executables on target
 340   --target-path=DIR        path to view of build directory on target
 341   --target-samples=DIR     path to samples directory on target
 342   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 343   --toolchain=NAME         set tool defaults according to NAME
 344   --nm=NM                  use nm tool NM [$nm_default]
 345   --ar=AR                  use archive tool AR [$ar_default]
 346   --as=AS                  use assembler AS [$as_default]
 347   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
 348   --strip=STRIP            use strip tool STRIP [$strip_default]
 349   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 350   --x86asmexe=EXE          use nasm-compatible assembler EXE [$x86asmexe_default]
 351   --cc=CC                  use C compiler CC [$cc_default]
 352   --cxx=CXX                use C compiler CXX [$cxx_default]
 353   --objcc=OCC              use ObjC compiler OCC [$cc_default]
 354   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 355   --nvcc=NVCC              use Nvidia CUDA compiler NVCC [$nvcc_default]
 356   --ld=LD                  use linker LD [$ld_default]
 357   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 358   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 359   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 360   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
 361   --host-cc=HOSTCC         use host C compiler HOSTCC
 362   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 363   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 364   --host-ld=HOSTLD         use host linker HOSTLD
 365   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 366   --host-libs=HLIBS        use libs HLIBS when linking for host
 367   --host-os=OS             compiler host OS [$target_os]
 368   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 369   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 370   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
 371   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 372   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 373   --extra-ldsoflags=ELDFLAGS add ELDFLAGS to LDSOFLAGS [$LDSOFLAGS]
 374   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 375   --extra-version=STRING   version string suffix []
 376   --optflags=OPTFLAGS      override optimization-related compiler flags
 377   --nvccflags=NVCCFLAGS    override nvcc flags [$nvccflags_default]
 378   --build-suffix=SUFFIX    library name suffix []
 379   --enable-pic             build position-independent code
 380   --enable-thumb           compile for Thumb instruction set
 381   --enable-lto             use link-time optimization
 382   --env="ENV=override"     override the environment variables
 383
 384 Advanced options (experts only):
 385   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 386   --custom-allocator=NAME  use a supported custom allocator
 387   --disable-symver         disable symbol versioning
 388   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 389   --disable-safe-bitstream-reader
 390                            disable buffer boundary checking in bitreaders
 391                            (faster, but may crash)
 392   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
 393
 394 Optimization options (experts only):
 395   --disable-asm            disable all assembly optimizations
 396   --disable-altivec        disable AltiVec optimizations
 397   --disable-vsx            disable VSX optimizations
 398   --disable-power8         disable POWER8 optimizations
 399   --disable-amd3dnow       disable 3DNow! optimizations
 400   --disable-amd3dnowext    disable 3DNow! extended optimizations
 401   --disable-mmx            disable MMX optimizations
 402   --disable-mmxext         disable MMXEXT optimizations
 403   --disable-sse            disable SSE optimizations
 404   --disable-sse2           disable SSE2 optimizations
 405   --disable-sse3           disable SSE3 optimizations
 406   --disable-ssse3          disable SSSE3 optimizations
 407   --disable-sse4           disable SSE4 optimizations
 408   --disable-sse42          disable SSE4.2 optimizations
 409   --disable-avx            disable AVX optimizations
 410   --disable-xop            disable XOP optimizations
 411   --disable-fma3           disable FMA3 optimizations
 412   --disable-fma4           disable FMA4 optimizations
 413   --disable-avx2           disable AVX2 optimizations
 414   --disable-avx512         disable AVX-512 optimizations
 415   --disable-aesni          disable AESNI optimizations
 416   --disable-armv5te        disable armv5te optimizations
 417   --disable-armv6          disable armv6 optimizations
 418   --disable-armv6t2        disable armv6t2 optimizations
 419   --disable-vfp            disable VFP optimizations
 420   --disable-neon           disable NEON optimizations
 421   --disable-inline-asm     disable use of inline assembly
 422   --disable-x86asm         disable use of standalone x86 assembly
 423   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
 424   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 425   --disable-msa            disable MSA optimizations
 426   --disable-mipsfpu        disable floating point MIPS optimizations
 427   --disable-mmi            disable Loongson SIMD optimizations
 428   --disable-fast-unaligned consider unaligned accesses slow
 429
 430 Developer options (useful when working on FFmpeg itself):
 431   --disable-debug          disable debugging symbols
 432   --enable-debug=LEVEL     set the debug level [$debuglevel]
 433   --disable-optimizations  disable compiler optimizations
 434   --enable-extra-warnings  enable more compiler warnings
 435   --disable-stripping      disable stripping of executables and shared libraries
 436   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 437                            2 causes a slowdown at runtime.
 438   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 439   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 440                            leaks and errors, using the specified valgrind binary.
 441                            Cannot be combined with --target-exec
 442   --enable-ftrapv          Trap arithmetic overflows
 443   --samples=PATH           location of test samples for FATE, if not set use
 444                            \$FATE_SAMPLES at make invocation time.
 445   --enable-neon-clobber-test check NEON registers for clobbering (should be
 446                            used only for debugging purposes)
 447   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 448                            should be used only for debugging purposes)
 449   --enable-random          randomly enable/disable components
 450   --disable-random
 451   --enable-random=LIST     randomly enable/disable specific components or
 452   --disable-random=LIST    component groups. LIST is a comma-separated list
 453                            of NAME[:PROB] entries where NAME is a component
 454                            (group) and PROB the probability associated with
 455                            NAME (default 0.5).
 456   --random-seed=VALUE      seed value for --enable/disable-random
 457   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 458                            (only applies to --disable-optimizations builds)
 459   --enable-osfuzz          Enable building fuzzer tool
 460   --libfuzzer=PATH         path to libfuzzer
 461   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
 462                            in the name) of tests whose result is ignored
 463   --enable-linux-perf      enable Linux Performance Monitor API
 464
 465 NOTE: Object files are built at the place where configure is launched.
 466 EOF
 467   exit 0
 468 }
 469
 470 if test -t 1 && which tput >/dev/null 2>&1; then
 471     ncolors=$(tput colors)
 472     if test -n "$ncolors" && test $ncolors -ge 8; then
 473         bold_color=$(tput bold)
 474         warn_color=$(tput setaf 3)
 475         error_color=$(tput setaf 1)
 476         reset_color=$(tput sgr0)
 477     fi
 478     # 72 used instead of 80 since that's the default of pr
 479     ncols=$(tput cols)
 480 fi
 481 : ${ncols:=72}
 482
 483 log(){
 484     echo "$@" >> $logfile
 485 }
 486
 487 log_file(){
 488     log BEGIN $1
 489     pr -n -t $1 >> $logfile
 490     log END $1
 491 }
 492
 493 warn(){
 494     log "WARNING: $*"
 495     WARNINGS="${WARNINGS}WARNING: $*\n"
 496 }
 497
 498 die(){
 499     log "$@"
 500     echo "$error_color$bold_color$@$reset_color"
 501     cat <<EOF
 502
 503 If you think configure made a mistake, make sure you are using the latest
 504 version from Git.  If the latest version fails, report the problem to the
 505 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 506 EOF
 507     if disabled logging; then
 508         cat <<EOF
 509 Rerun configure with logging enabled (do not use --disable-logging), and
 510 include the log this produces with your report.
 511 EOF
 512     else
 513         cat <<EOF
 514 Include the log file "$logfile" produced by configure as this will help
 515 solve the problem.
 516 EOF
 517     fi
 518     exit 1
 519 }
 520
 521 # Avoid locale weirdness, besides we really just want to translate ASCII.
 522 toupper(){
 523     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 524 }
 525
 526 tolower(){
 527     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 528 }
 529
 530 c_escape(){
 531     echo "$*" | sed 's/["\\]/\\\0/g'
 532 }
 533
 534 sh_quote(){
 535     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 536     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 537     echo "$v"
 538 }
 539
 540 cleanws(){
 541     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
 542 }
 543
 544 filter(){
 545     pat=$1
 546     shift
 547     for v; do
 548         eval "case '$v' in $pat) printf '%s ' '$v' ;; esac"
 549     done
 550 }
 551
 552 filter_out(){
 553     pat=$1
 554     shift
 555     for v; do
 556         eval "case '$v' in $pat) ;; *) printf '%s ' '$v' ;; esac"
 557     done
 558 }
 559
 560 map(){
 561     m=$1
 562     shift
 563     for v; do eval $m; done
 564 }
 565
 566 add_suffix(){
 567     suffix=$1
 568     shift
 569     for v; do echo ${v}${suffix}; done
 570 }
 571
 572 set_all(){
 573     value=$1
 574     shift
 575     for var in $*; do
 576         eval $var=$value
 577     done
 578 }
 579
 580 set_weak(){
 581     value=$1
 582     shift
 583     for var; do
 584         eval : \${$var:=$value}
 585     done
 586 }
 587
 588 sanitize_var_name(){
 589     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 590 }
 591
 592 set_sanitized(){
 593     var=$1
 594     shift
 595     eval $(sanitize_var_name "$var")='$*'
 596 }
 597
 598 get_sanitized(){
 599     eval echo \$$(sanitize_var_name "$1")
 600 }
 601
 602 pushvar(){
 603     for pvar in $*; do
 604         eval level=\${${pvar}_level:=0}
 605         eval ${pvar}_${level}="\$$pvar"
 606         eval ${pvar}_level=$(($level+1))
 607     done
 608 }
 609
 610 popvar(){
 611     for pvar in $*; do
 612         eval level=\${${pvar}_level:-0}
 613         test $level = 0 && continue
 614         eval level=$(($level-1))
 615         eval $pvar="\${${pvar}_${level}}"
 616         eval ${pvar}_level=$level
 617         eval unset ${pvar}_${level}
 618     done
 619 }
 620
 621 request(){
 622     for var in $*; do
 623         eval ${var}_requested=yes
 624         eval $var=
 625     done
 626 }
 627
 628 enable(){
 629     set_all yes $*
 630 }
 631
 632 disable(){
 633     set_all no $*
 634 }
 635
 636 enable_weak(){
 637     set_weak yes $*
 638 }
 639
 640 disable_weak(){
 641     set_weak no $*
 642 }
 643
 644 enable_sanitized(){
 645     for var; do
 646         enable $(sanitize_var_name $var)
 647     done
 648 }
 649
 650 disable_sanitized(){
 651     for var; do
 652         disable $(sanitize_var_name $var)
 653     done
 654 }
 655
 656 do_enable_deep(){
 657     for var; do
 658         enabled $var && continue
 659         eval sel="\$${var}_select"
 660         eval sgs="\$${var}_suggest"
 661         pushvar var sgs
 662         enable_deep $sel
 663         popvar sgs
 664         enable_deep_weak $sgs
 665         popvar var
 666     done
 667 }
 668
 669 enable_deep(){
 670     do_enable_deep $*
 671     enable $*
 672 }
 673
 674 enable_deep_weak(){
 675     for var; do
 676         disabled $var && continue
 677         pushvar var
 678         do_enable_deep $var
 679         popvar var
 680         enable_weak $var
 681     done
 682 }
 683
 684 requested(){
 685     test "${1#!}" = "$1" && op="=" || op="!="
 686     eval test "x\$${1#!}_requested" $op "xyes"
 687 }
 688
 689 enabled(){
 690     test "${1#!}" = "$1" && op="=" || op="!="
 691     eval test "x\$${1#!}" $op "xyes"
 692 }
 693
 694 disabled(){
 695     test "${1#!}" = "$1" && op="=" || op="!="
 696     eval test "x\$${1#!}" $op "xno"
 697 }
 698
 699 enabled_all(){
 700     for opt; do
 701         enabled $opt || return 1
 702     done
 703 }
 704
 705 disabled_all(){
 706     for opt; do
 707         disabled $opt || return 1
 708     done
 709 }
 710
 711 enabled_any(){
 712     for opt; do
 713         enabled $opt && return 0
 714     done
 715 }
 716
 717 disabled_any(){
 718     for opt; do
 719         disabled $opt && return 0
 720     done
 721     return 1
 722 }
 723
 724 set_default(){
 725     for opt; do
 726         eval : \${$opt:=\$${opt}_default}
 727     done
 728 }
 729
 730 is_in(){
 731     value=$1
 732     shift
 733     for var in $*; do
 734         [ $var = $value ] && return 0
 735     done
 736     return 1
 737 }
 738
 739 check_deps(){
 740     for cfg; do
 741         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 742         disabled ${cfg}_checking && continue
 743         enable ${cfg}_checking
 744
 745         eval dep_all="\$${cfg}_deps"
 746         eval dep_any="\$${cfg}_deps_any"
 747         eval dep_con="\$${cfg}_conflict"
 748         eval dep_sel="\$${cfg}_select"
 749         eval dep_sgs="\$${cfg}_suggest"
 750         eval dep_ifa="\$${cfg}_if"
 751         eval dep_ifn="\$${cfg}_if_any"
 752
 753         pushvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
 754         check_deps $dep_all $dep_any $dep_con $dep_sel $dep_sgs $dep_ifa $dep_ifn
 755         popvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
 756
 757         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 758         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 759         enabled_all  $dep_all || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not all dependencies are satisfied: $dep_all"; }
 760         enabled_any  $dep_any || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not any dependency is satisfied: $dep_any"; }
 761         disabled_all $dep_con || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some conflicting dependencies are unsatisfied: $dep_con"; }
 762         disabled_any $dep_sel && { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some selected dependency is unsatisfied: $dep_sel"; }
 763
 764         enabled $cfg && enable_deep_weak $dep_sel $dep_sgs
 765
 766         for dep in $dep_all $dep_any $dep_sel $dep_sgs; do
 767             # filter out library deps, these do not belong in extralibs
 768             is_in $dep $LIBRARY_LIST && continue
 769             enabled $dep && eval append ${cfg}_extralibs ${dep}_extralibs
 770         done
 771
 772         disable ${cfg}_checking
 773     done
 774 }
 775
 776 print_config(){
 777     pfx=$1
 778     files=$2
 779     shift 2
 780     map 'eval echo "$v \${$v:-no}"' "$@" |
 781     awk "BEGIN { split(\"$files\", files) }
 782         {
 783             c = \"$pfx\" toupper(\$1);
 784             v = \$2;
 785             sub(/yes/, 1, v);
 786             sub(/no/,  0, v);
 787             for (f in files) {
 788                 file = files[f];
 789                 if (file ~ /\\.h\$/) {
 790                     printf(\"#define %s %d\\n\", c, v) >>file;
 791                 } else if (file ~ /\\.asm\$/) {
 792                     printf(\"%%define %s %d\\n\", c, v) >>file;
 793                 } else if (file ~ /\\.mak\$/) {
 794                     n = -v ? \"\" : \"!\";
 795                     printf(\"%s%s=yes\\n\", n, c) >>file;
 796                 } else if (file ~ /\\.texi\$/) {
 797                     pre = -v ? \"\" : \"@c \";
 798                     yesno = \$2;
 799                     c2 = tolower(c);
 800                     gsub(/_/, \"-\", c2);
 801                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 802                 }
 803             }
 804         }"
 805 }
 806
 807 print_enabled(){
 808     suf=$1
 809     shift
 810     for v; do
 811         enabled $v && printf "%s\n" ${v%$suf}
 812     done
 813 }
 814
 815 append(){
 816     var=$1
 817     shift
 818     eval "$var=\"\$$var $*\""
 819 }
 820
 821 prepend(){
 822     var=$1
 823     shift
 824     eval "$var=\"$* \$$var\""
 825 }
 826
 827 unique(){
 828     var=$1
 829     uniq_list=""
 830     for tok in $(eval echo \$$var); do
 831         uniq_list="$(filter_out $tok $uniq_list) $tok"
 832     done
 833     eval "$var=\"${uniq_list}\""
 834 }
 835
 836 resolve(){
 837     var=$1
 838     tmpvar=
 839     for entry in $(eval echo \$$var); do
 840         tmpvar="$tmpvar $(eval echo \$${entry})"
 841     done
 842     eval "$var=\"${tmpvar}\""
 843 }
 844
 845 add_cppflags(){
 846     append CPPFLAGS "$@"
 847 }
 848
 849 add_cflags(){
 850     append CFLAGS $($cflags_filter "$@")
 851 }
 852
 853 add_cflags_headers(){
 854     append CFLAGS_HEADERS $($cflags_filter "$@")
 855 }
 856
 857 add_cxxflags(){
 858     append CXXFLAGS $($cflags_filter "$@")
 859 }
 860
 861 add_asflags(){
 862     append ASFLAGS $($asflags_filter "$@")
 863 }
 864
 865 add_objcflags(){
 866     append OBJCFLAGS $($objcflags_filter "$@")
 867 }
 868
 869 add_ldflags(){
 870     append LDFLAGS $($ldflags_filter "$@")
 871 }
 872
 873 add_ldexeflags(){
 874     append LDEXEFLAGS $($ldflags_filter "$@")
 875 }
 876
 877 add_ldsoflags(){
 878     append LDSOFLAGS $($ldflags_filter "$@")
 879 }
 880
 881 add_stripflags(){
 882     append ASMSTRIPFLAGS "$@"
 883 }
 884
 885 add_extralibs(){
 886     prepend extralibs $($ldflags_filter "$@")
 887 }
 888
 889 add_host_cppflags(){
 890     append host_cppflags "$@"
 891 }
 892
 893 add_host_cflags(){
 894     append host_cflags $($host_cflags_filter "$@")
 895 }
 896
 897 add_host_ldflags(){
 898     append host_ldflags $($host_ldflags_filter "$@")
 899 }
 900
 901 add_compat(){
 902     append compat_objs $1
 903     shift
 904     map 'add_cppflags -D$v' "$@"
 905 }
 906
 907 check_cmd(){
 908     log "$@"
 909     "$@" >> $logfile 2>&1
 910 }
 911
 912 check_stat(){
 913     log check_stat "$@"
 914     stat "$1" >> $logfile 2>&1
 915 }
 916
 917 cc_o(){
 918     eval printf '%s\\n' $CC_O
 919 }
 920
 921 cc_e(){
 922     eval printf '%s\\n' $CC_E
 923 }
 924
 925 check_cc(){
 926     log check_cc "$@"
 927     cat > $TMPC
 928     log_file $TMPC
 929     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 930 }
 931
 932 check_cxx(){
 933     log check_cxx "$@"
 934     cat > $TMPCPP
 935     log_file $TMPCPP
 936     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
 937 }
 938
 939 check_objcc(){
 940     log check_objcc "$@"
 941     cat > $TMPM
 942     log_file $TMPM
 943     check_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
 944 }
 945
 946 check_cpp(){
 947     log check_cpp "$@"
 948     cat > $TMPC
 949     log_file $TMPC
 950     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 951 }
 952
 953 as_o(){
 954     eval printf '%s\\n' $AS_O
 955 }
 956
 957 check_as(){
 958     log check_as "$@"
 959     cat > $TMPS
 960     log_file $TMPS
 961     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 962 }
 963
 964 check_inline_asm(){
 965     log check_inline_asm "$@"
 966     name="$1"
 967     code="$2"
 968     shift 2
 969     disable $name
 970     check_cc "$@" <<EOF && enable $name
 971 void foo(void){ __asm__ volatile($code); }
 972 EOF
 973 }
 974
 975 check_inline_asm_flags(){
 976     log check_inline_asm_flags "$@"
 977     name="$1"
 978     code="$2"
 979     flags=''
 980     shift 2
 981     while [ "$1" != "" ]; do
 982       append flags $1
 983       shift
 984     done;
 985     disable $name
 986     cat > $TMPC <<EOF
 987 void foo(void){ __asm__ volatile($code); }
 988 EOF
 989     log_file $TMPC
 990     check_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
 991     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
 992 }
 993
 994 check_insn(){
 995     log check_insn "$@"
 996     check_inline_asm ${1}_inline "\"$2\""
 997     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 998 }
 999
1000 check_x86asm(){
1001     log check_x86asm "$@"
1002     echo "$1" > $TMPS
1003     log_file $TMPS
1004     shift 1
1005     check_cmd $x86asmexe $X86ASMFLAGS -Werror "$@" -o $TMPO $TMPS
1006 }
1007
1008 ld_o(){
1009     eval printf '%s\\n' $LD_O
1010 }
1011
1012 check_ld(){
1013     log check_ld "$@"
1014     type=$1
1015     shift 1
1016     flags=$(filter_out '-l*|*.so' $@)
1017     libs=$(filter '-l*|*.so' $@)
1018     check_$type $($cflags_filter $flags) || return
1019     flags=$($ldflags_filter $flags)
1020     libs=$($ldflags_filter $libs)
1021     check_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
1022 }
1023
1024 print_include(){
1025     hdr=$1
1026     test "${hdr%.h}" = "${hdr}" &&
1027         echo "#include $hdr"    ||
1028         echo "#include <$hdr>"
1029 }
1030
1031 check_code(){
1032     log check_code "$@"
1033     check=$1
1034     headers=$2
1035     code=$3
1036     shift 3
1037     {
1038         for hdr in $headers; do
1039             print_include $hdr
1040         done
1041         echo "int main(void) { $code; return 0; }"
1042     } | check_$check "$@"
1043 }
1044
1045 check_cppflags(){
1046     log check_cppflags "$@"
1047     check_cpp "$@" <<EOF && append CPPFLAGS "$@"
1048 #include <stdlib.h>
1049 EOF
1050 }
1051
1052 test_cflags(){
1053     log test_cflags "$@"
1054     set -- $($cflags_filter "$@")
1055     check_cc "$@" <<EOF
1056 int x;
1057 EOF
1058 }
1059
1060 check_cflags(){
1061     log check_cflags "$@"
1062     test_cflags "$@" && add_cflags "$@"
1063 }
1064
1065 check_cxxflags(){
1066     log check_cxxflags "$@"
1067     set -- $($cflags_filter "$@")
1068     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
1069 int x;
1070 EOF
1071 }
1072
1073 test_objcflags(){
1074     log test_objcflags "$@"
1075     set -- $($objcflags_filter "$@")
1076     check_objcc "$@" <<EOF
1077 int x;
1078 EOF
1079 }
1080
1081 check_objcflags(){
1082     log check_objcflags "$@"
1083     test_objcflags "$@" && add_objcflags "$@"
1084 }
1085
1086 test_ldflags(){
1087     log test_ldflags "$@"
1088     set -- $($ldflags_filter "$@")
1089     check_ld "cc" "$@" <<EOF
1090 int main(void){ return 0; }
1091 EOF
1092 }
1093
1094 check_ldflags(){
1095     log check_ldflags "$@"
1096     test_ldflags "$@" && add_ldflags "$@"
1097 }
1098
1099 test_stripflags(){
1100     log test_stripflags "$@"
1101     # call check_cc to get a fresh TMPO
1102     check_cc <<EOF
1103 int main(void) { return 0; }
1104 EOF
1105     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1106 }
1107
1108 check_stripflags(){
1109     log check_stripflags "$@"
1110     test_stripflags "$@" && add_stripflags "$@"
1111 }
1112
1113 check_header(){
1114     log check_header "$@"
1115     headers=$1
1116     shift
1117     disable_sanitized $headers
1118     {
1119         for hdr in $headers; do
1120             print_include $hdr
1121         done
1122         echo "int x;"
1123     } | check_cpp "$@" && enable_sanitized $headers
1124 }
1125
1126 check_header_objcc(){
1127     log check_header_objcc "$@"
1128     rm -f -- "$TMPO"
1129     header=$1
1130     shift
1131     disable_sanitized $header
1132     {
1133        echo "#include <$header>"
1134        echo "int main(void) { return 0; }"
1135     } | check_objcc && check_stat "$TMPO" && enable_sanitized $header
1136 }
1137
1138 check_apple_framework(){
1139     log check_apple_framework "$@"
1140     framework="$1"
1141     name="$(tolower $framework)"
1142     header="${framework}/${framework}.h"
1143     disable $name
1144     check_header_objcc $header &&
1145         enable $name && eval ${name}_extralibs='"-framework $framework"'
1146 }
1147
1148 check_func(){
1149     log check_func "$@"
1150     func=$1
1151     shift
1152     disable $func
1153     check_ld "cc" "$@" <<EOF && enable $func
1154 extern int $func();
1155 int main(void){ $func(); }
1156 EOF
1157 }
1158
1159 check_complexfunc(){
1160     log check_complexfunc "$@"
1161     func=$1
1162     narg=$2
1163     shift 2
1164     test $narg = 2 && args="f, g" || args="f * I"
1165     disable $func
1166     check_ld "cc" "$@" <<EOF && enable $func
1167 #include <complex.h>
1168 #include <math.h>
1169 float foo(complex float f, complex float g) { return $func($args); }
1170 int main(void){ return (int) foo; }
1171 EOF
1172 }
1173
1174 check_mathfunc(){
1175     log check_mathfunc "$@"
1176     func=$1
1177     narg=$2
1178     shift 2
1179     test $narg = 2 && args="f, g" || args="f"
1180     disable $func
1181     check_ld "cc" "$@" <<EOF && enable $func
1182 #include <math.h>
1183 float foo(float f, float g) { return $func($args); }
1184 int main(void){ return (int) foo; }
1185 EOF
1186 }
1187
1188 check_func_headers(){
1189     log check_func_headers "$@"
1190     headers=$1
1191     funcs=$2
1192     shift 2
1193     {
1194         for hdr in $headers; do
1195             print_include $hdr
1196         done
1197         echo "#include <stdint.h>"
1198         for func in $funcs; do
1199             echo "long check_$func(void) { return (long) $func; }"
1200         done
1201         echo "int main(void) { int ret = 0;"
1202         # LTO could optimize out the test functions without this
1203         for func in $funcs; do
1204             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1205         done
1206         echo "return ret; }"
1207     } | check_ld "cc" "$@" && enable $funcs && enable_sanitized $headers
1208 }
1209
1210 check_class_headers_cpp(){
1211     log check_class_headers_cpp "$@"
1212     headers=$1
1213     classes=$2
1214     shift 2
1215     {
1216         for hdr in $headers; do
1217             echo "#include <$hdr>"
1218         done
1219         echo "int main(void) { "
1220         i=1
1221         for class in $classes; do
1222             echo "$class obj$i;"
1223             i=$(expr $i + 1)
1224         done
1225         echo "return 0; }"
1226     } | check_ld "cxx" "$@" && enable $funcs && enable_sanitized $headers
1227 }
1228
1229 check_cpp_condition(){
1230     log check_cpp_condition "$@"
1231     header=$1
1232     condition=$2
1233     shift 2
1234     check_cpp "$@" <<EOF
1235 #include <$header>
1236 #if !($condition)
1237 #error "unsatisfied condition: $condition"
1238 #endif
1239 EOF
1240 }
1241
1242 test_cflags_cc(){
1243     log test_cflags_cc "$@"
1244     flags=$1
1245     header=$2
1246     condition=$3
1247     shift 3
1248     set -- $($cflags_filter "$flags")
1249     check_cc "$@" <<EOF
1250 #include <$header>
1251 #if !($condition)
1252 #error "unsatisfied condition: $condition"
1253 #endif
1254 EOF
1255 }
1256
1257 check_lib(){
1258     log check_lib "$@"
1259     name="$1"
1260     headers="$2"
1261     funcs="$3"
1262     shift 3
1263     disable $name
1264     check_func_headers "$headers" "$funcs" "$@" &&
1265         enable $name && eval ${name}_extralibs="\$@"
1266 }
1267
1268 check_lib_cpp(){
1269     log check_lib_cpp "$@"
1270     name="$1"
1271     headers="$2"
1272     classes="$3"
1273     shift 3
1274     disable $name
1275     check_class_headers_cpp "$headers" "$classes" "$@" &&
1276         enable $name && eval ${name}_extralibs="\$@"
1277 }
1278
1279 test_pkg_config(){
1280     log test_pkg_config "$@"
1281     name="$1"
1282     pkg_version="$2"
1283     pkg="${2%% *}"
1284     headers="$3"
1285     funcs="$4"
1286     shift 4
1287     disable $name
1288     check_cmd $pkg_config --exists --print-errors $pkg_version || return
1289     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1290     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1291     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1292         enable $name &&
1293         set_sanitized "${name}_cflags"    $pkg_cflags &&
1294         set_sanitized "${name}_extralibs" $pkg_libs
1295 }
1296
1297 check_pkg_config(){
1298     log check_pkg_config "$@"
1299     name="$1"
1300     test_pkg_config "$@" &&
1301         eval add_cflags \$${name}_cflags
1302 }
1303
1304 check_exec(){
1305     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1306 }
1307
1308 check_exec_crash(){
1309     log check_exec_crash "$@"
1310     code=$(cat)
1311
1312     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1313     # are safe but may not be available everywhere.  Thus we use
1314     # raise(SIGTERM) instead.  The check is run in a subshell so we
1315     # can redirect the "Terminated" message from the shell.  SIGBUS
1316     # is not defined by standard C so it is used conditionally.
1317
1318     (check_exec "$@") >> $logfile 2>&1 <<EOF
1319 #include <signal.h>
1320 static void sighandler(int sig){
1321     raise(SIGTERM);
1322 }
1323 int foo(void){
1324     $code
1325 }
1326 int (*func_ptr)(void) = foo;
1327 int main(void){
1328     signal(SIGILL, sighandler);
1329     signal(SIGFPE, sighandler);
1330     signal(SIGSEGV, sighandler);
1331 #ifdef SIGBUS
1332     signal(SIGBUS, sighandler);
1333 #endif
1334     return func_ptr();
1335 }
1336 EOF
1337 }
1338
1339 check_type(){
1340     log check_type "$@"
1341     headers=$1
1342     type=$2
1343     shift 2
1344     disable_sanitized "$type"
1345     check_code cc "$headers" "$type v" "$@" && enable_sanitized "$type"
1346 }
1347
1348 check_struct(){
1349     log check_struct "$@"
1350     headers=$1
1351     struct=$2
1352     member=$3
1353     shift 3
1354     disable_sanitized "${struct}_${member}"
1355     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1356         enable_sanitized "${struct}_${member}"
1357 }
1358
1359 check_builtin(){
1360     log check_builtin "$@"
1361     name=$1
1362     headers=$2
1363     builtin=$3
1364     shift 3
1365     disable "$name"
1366     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1367 }
1368
1369 check_compile_assert(){
1370     log check_compile_assert "$@"
1371     name=$1
1372     headers=$2
1373     condition=$3
1374     shift 3
1375     disable "$name"
1376     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1377 }
1378
1379 require(){
1380     log require "$@"
1381     name_version="$1"
1382     name="${1%% *}"
1383     headers="$2"
1384     func="$3"
1385     shift 3
1386     check_lib $name "$headers" $func "$@" || die "ERROR: $name_version not found"
1387 }
1388
1389 require_cpp(){
1390     name="$1"
1391     headers="$2"
1392     classes="$3"
1393     shift 3
1394     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1395 }
1396
1397 require_header(){
1398     log require_header "$@"
1399     headers="$1"
1400     shift
1401     check_header "$headers" "$@" || die "ERROR: $headers not found"
1402 }
1403
1404 require_cpp_condition(){
1405     log require_cpp_condition "$@"
1406     header="$1"
1407     condition="$2"
1408     shift 2
1409     check_cpp_condition "$header" "$condition" "$@" || die "ERROR: $condition not satisfied"
1410 }
1411
1412 require_pkg_config(){
1413     log require_pkg_config "$@"
1414     pkg_version="$2"
1415     check_pkg_config "$@" || die "ERROR: $pkg_version not found using pkg-config$pkg_config_fail_message"
1416 }
1417
1418 hostcc_e(){
1419     eval printf '%s\\n' $HOSTCC_E
1420 }
1421
1422 hostcc_o(){
1423     eval printf '%s\\n' $HOSTCC_O
1424 }
1425
1426 check_host_cc(){
1427     log check_host_cc "$@"
1428     cat > $TMPC
1429     log_file $TMPC
1430     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1431 }
1432
1433 check_host_cpp(){
1434     log check_host_cpp "$@"
1435     cat > $TMPC
1436     log_file $TMPC
1437     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1438 }
1439
1440 check_host_cppflags(){
1441     log check_host_cppflags "$@"
1442     check_host_cpp "$@" <<EOF && append host_cppflags "$@"
1443 #include <stdlib.h>
1444 EOF
1445 }
1446
1447 check_host_cflags(){
1448     log check_host_cflags "$@"
1449     set -- $($host_cflags_filter "$@")
1450     check_host_cc "$@" <<EOF && append host_cflags "$@"
1451 int x;
1452 EOF
1453 }
1454
1455 check_host_cpp_condition(){
1456     log check_host_cpp_condition "$@"
1457     header=$1
1458     condition=$2
1459     shift 2
1460     check_host_cpp "$@" <<EOF
1461 #include <$header>
1462 #if !($condition)
1463 #error "unsatisfied condition: $condition"
1464 #endif
1465 EOF
1466 }
1467
1468 cp_if_changed(){
1469     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1470     mkdir -p "$(dirname $2)"
1471     cp -f "$1" "$2"
1472 }
1473
1474 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1475 # system-dependent things.
1476
1477 AVCODEC_COMPONENTS="
1478     bsfs
1479     decoders
1480     encoders
1481     hwaccels
1482     parsers
1483 "
1484
1485 AVDEVICE_COMPONENTS="
1486     indevs
1487     outdevs
1488 "
1489
1490 AVFILTER_COMPONENTS="
1491     filters
1492 "
1493
1494 AVFORMAT_COMPONENTS="
1495     demuxers
1496     muxers
1497     protocols
1498 "
1499
1500 COMPONENT_LIST="
1501     $AVCODEC_COMPONENTS
1502     $AVDEVICE_COMPONENTS
1503     $AVFILTER_COMPONENTS
1504     $AVFORMAT_COMPONENTS
1505 "
1506
1507 EXAMPLE_LIST="
1508     avio_dir_cmd_example
1509     avio_reading_example
1510     decode_audio_example
1511     decode_video_example
1512     demuxing_decoding_example
1513     encode_audio_example
1514     encode_video_example
1515     extract_mvs_example
1516     filter_audio_example
1517     filtering_audio_example
1518     filtering_video_example
1519     http_multiclient_example
1520     hw_decode_example
1521     metadata_example
1522     muxing_example
1523     qsvdec_example
1524     remuxing_example
1525     resampling_audio_example
1526     scaling_video_example
1527     transcode_aac_example
1528     transcoding_example
1529     vaapi_encode_example
1530 "
1531
1532 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1533     alsa
1534     appkit
1535     avfoundation
1536     bzlib
1537     coreimage
1538     iconv
1539     libxcb
1540     libxcb_shm
1541     libxcb_shape
1542     libxcb_xfixes
1543     lzma
1544     schannel
1545     sdl2
1546     securetransport
1547     sndio
1548     xlib
1549     zlib
1550 "
1551
1552 EXTERNAL_LIBRARY_GPL_LIST="
1553     avisynth
1554     frei0r
1555     libcdio
1556     librubberband
1557     libvidstab
1558     libx264
1559     libx265
1560     libxavs
1561     libxvid
1562 "
1563
1564 EXTERNAL_LIBRARY_NONFREE_LIST="
1565     decklink
1566     libndi_newtek
1567     libfdk_aac
1568     openssl
1569     libtls
1570 "
1571
1572 EXTERNAL_LIBRARY_VERSION3_LIST="
1573     gmp
1574     libopencore_amrnb
1575     libopencore_amrwb
1576     libvmaf
1577     libvo_amrwbenc
1578     rkmpp
1579 "
1580
1581 EXTERNAL_LIBRARY_GPLV3_LIST="
1582     libsmbclient
1583 "
1584
1585 EXTERNAL_LIBRARY_LIST="
1586     $EXTERNAL_LIBRARY_GPL_LIST
1587     $EXTERNAL_LIBRARY_NONFREE_LIST
1588     $EXTERNAL_LIBRARY_VERSION3_LIST
1589     $EXTERNAL_LIBRARY_GPLV3_LIST
1590     chromaprint
1591     gcrypt
1592     gnutls
1593     jni
1594     ladspa
1595     libass
1596     libbluray
1597     libbs2b
1598     libcaca
1599     libcelt
1600     libdc1394
1601     libdrm
1602     libflite
1603     libfontconfig
1604     libfreetype
1605     libfribidi
1606     libgme
1607     libgsm
1608     libiec61883
1609     libilbc
1610     libjack
1611     libkvazaar
1612     libmodplug
1613     libmp3lame
1614     libmysofa
1615     libopencv
1616     libopenh264
1617     libopenjpeg
1618     libopenmpt
1619     libopus
1620     libpulse
1621     librsvg
1622     librtmp
1623     libshine
1624     libsmbclient
1625     libsnappy
1626     libsoxr
1627     libspeex
1628     libssh
1629     libtesseract
1630     libtheora
1631     libtwolame
1632     libv4l2
1633     libvorbis
1634     libvpx
1635     libwavpack
1636     libwebp
1637     libxml2
1638     libzimg
1639     libzmq
1640     libzvbi
1641     lv2
1642     mediacodec
1643     openal
1644     opengl
1645 "
1646
1647 HWACCEL_AUTODETECT_LIBRARY_LIST="
1648     amf
1649     audiotoolbox
1650     crystalhd
1651     cuda
1652     cuvid
1653     d3d11va
1654     dxva2
1655     nvdec
1656     nvenc
1657     vaapi
1658     vdpau
1659     videotoolbox
1660     v4l2_m2m
1661     xvmc
1662 "
1663
1664 # catchall list of things that require external libs to link
1665 EXTRALIBS_LIST="
1666     cpu_init
1667     cws2fws
1668 "
1669
1670 HWACCEL_LIBRARY_NONFREE_LIST="
1671     cuda_sdk
1672     libnpp
1673 "
1674
1675 HWACCEL_LIBRARY_LIST="
1676     $HWACCEL_LIBRARY_NONFREE_LIST
1677     libmfx
1678     mmal
1679     omx
1680     opencl
1681 "
1682
1683 DOCUMENT_LIST="
1684     doc
1685     htmlpages
1686     manpages
1687     podpages
1688     txtpages
1689 "
1690
1691 FEATURE_LIST="
1692     ftrapv
1693     gray
1694     hardcoded_tables
1695     omx_rpi
1696     runtime_cpudetect
1697     safe_bitstream_reader
1698     shared
1699     small
1700     static
1701     swscale_alpha
1702 "
1703
1704 LIBRARY_LIST="
1705     avcodec
1706     avdevice
1707     avfilter
1708     avformat
1709     avresample
1710     avutil
1711     postproc
1712     swresample
1713     swscale
1714 "
1715
1716 LICENSE_LIST="
1717     gpl
1718     nonfree
1719     version3
1720 "
1721
1722 PROGRAM_LIST="
1723     ffplay
1724     ffprobe
1725     ffserver
1726     ffmpeg
1727 "
1728
1729 SUBSYSTEM_LIST="
1730     dct
1731     dwt
1732     error_resilience
1733     faan
1734     fast_unaligned
1735     fft
1736     lsp
1737     lzo
1738     mdct
1739     pixelutils
1740     network
1741     rdft
1742 "
1743
1744 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1745 CONFIG_LIST="
1746     $DOCUMENT_LIST
1747     $EXAMPLE_LIST
1748     $EXTERNAL_LIBRARY_LIST
1749     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1750     $HWACCEL_LIBRARY_LIST
1751     $HWACCEL_AUTODETECT_LIBRARY_LIST
1752     $FEATURE_LIST
1753     $LICENSE_LIST
1754     $LIBRARY_LIST
1755     $PROGRAM_LIST
1756     $SUBSYSTEM_LIST
1757     autodetect
1758     fontconfig
1759     linux_perf
1760     memory_poisoning
1761     neon_clobber_test
1762     ossfuzz
1763     pic
1764     thumb
1765     valgrind_backtrace
1766     xmm_clobber_test
1767     $COMPONENT_LIST
1768 "
1769
1770 THREADS_LIST="
1771     pthreads
1772     os2threads
1773     w32threads
1774 "
1775
1776 ATOMICS_LIST="
1777     atomics_gcc
1778     atomics_suncc
1779     atomics_win32
1780 "
1781
1782 AUTODETECT_LIBS="
1783     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1784     $HWACCEL_AUTODETECT_LIBRARY_LIST
1785     $THREADS_LIST
1786 "
1787
1788 ARCH_LIST="
1789     aarch64
1790     alpha
1791     arm
1792     avr32
1793     avr32_ap
1794     avr32_uc
1795     bfin
1796     ia64
1797     m68k
1798     mips
1799     mips64
1800     parisc
1801     ppc
1802     ppc64
1803     s390
1804     sh4
1805     sparc
1806     sparc64
1807     tilegx
1808     tilepro
1809     tomi
1810     x86
1811     x86_32
1812     x86_64
1813 "
1814
1815 ARCH_EXT_LIST_ARM="
1816     armv5te
1817     armv6
1818     armv6t2
1819     armv8
1820     neon
1821     vfp
1822     vfpv3
1823     setend
1824 "
1825
1826 ARCH_EXT_LIST_MIPS="
1827     mipsfpu
1828     mips32r2
1829     mips32r5
1830     mips64r2
1831     mips32r6
1832     mips64r6
1833     mipsdsp
1834     mipsdspr2
1835     msa
1836 "
1837
1838 ARCH_EXT_LIST_LOONGSON="
1839     loongson2
1840     loongson3
1841     mmi
1842 "
1843
1844 ARCH_EXT_LIST_X86_SIMD="
1845     aesni
1846     amd3dnow
1847     amd3dnowext
1848     avx
1849     avx2
1850     avx512
1851     fma3
1852     fma4
1853     mmx
1854     mmxext
1855     sse
1856     sse2
1857     sse3
1858     sse4
1859     sse42
1860     ssse3
1861     xop
1862 "
1863
1864 ARCH_EXT_LIST_PPC="
1865     altivec
1866     dcbzl
1867     ldbrx
1868     power8
1869     ppc4xx
1870     vsx
1871 "
1872
1873 ARCH_EXT_LIST_X86="
1874     $ARCH_EXT_LIST_X86_SIMD
1875     cpunop
1876     i686
1877 "
1878
1879 ARCH_EXT_LIST="
1880     $ARCH_EXT_LIST_ARM
1881     $ARCH_EXT_LIST_PPC
1882     $ARCH_EXT_LIST_X86
1883     $ARCH_EXT_LIST_MIPS
1884     $ARCH_EXT_LIST_LOONGSON
1885 "
1886
1887 ARCH_FEATURES="
1888     aligned_stack
1889     fast_64bit
1890     fast_clz
1891     fast_cmov
1892     local_aligned
1893     simd_align_16
1894     simd_align_32
1895     simd_align_64
1896 "
1897
1898 BUILTIN_LIST="
1899     atomic_cas_ptr
1900     machine_rw_barrier
1901     MemoryBarrier
1902     mm_empty
1903     rdtsc
1904     sarestart
1905     sem_timedwait
1906     sync_val_compare_and_swap
1907 "
1908 HAVE_LIST_CMDLINE="
1909     inline_asm
1910     symver
1911     x86asm
1912 "
1913
1914 HAVE_LIST_PUB="
1915     bigendian
1916     fast_unaligned
1917 "
1918
1919 HEADERS_LIST="
1920     arpa_inet_h
1921     asm_types_h
1922     cdio_paranoia_h
1923     cdio_paranoia_paranoia_h
1924     cuda_h
1925     dispatch_dispatch_h
1926     dev_bktr_ioctl_bt848_h
1927     dev_bktr_ioctl_meteor_h
1928     dev_ic_bt8xx_h
1929     dev_video_bktr_ioctl_bt848_h
1930     dev_video_meteor_ioctl_meteor_h
1931     direct_h
1932     dirent_h
1933     dxgidebug_h
1934     dxva_h
1935     ES2_gl_h
1936     gsm_h
1937     io_h
1938     machine_ioctl_bt848_h
1939     machine_ioctl_meteor_h
1940     malloc_h
1941     opencv2_core_core_c_h
1942     OpenGL_gl3_h
1943     poll_h
1944     sys_param_h
1945     sys_resource_h
1946     sys_select_h
1947     sys_soundcard_h
1948     sys_time_h
1949     sys_un_h
1950     sys_videoio_h
1951     termios_h
1952     udplite_h
1953     unistd_h
1954     valgrind_valgrind_h
1955     windows_h
1956     winsock2_h
1957 "
1958
1959 INTRINSICS_LIST="
1960     intrinsics_neon
1961 "
1962
1963 COMPLEX_FUNCS="
1964     cabs
1965     cexp
1966 "
1967
1968 MATH_FUNCS="
1969     atanf
1970     atan2f
1971     cbrt
1972     cbrtf
1973     copysign
1974     cosf
1975     erf
1976     exp2
1977     exp2f
1978     expf
1979     hypot
1980     isfinite
1981     isinf
1982     isnan
1983     ldexpf
1984     llrint
1985     llrintf
1986     log2
1987     log2f
1988     log10f
1989     lrint
1990     lrintf
1991     powf
1992     rint
1993     round
1994     roundf
1995     sinf
1996     trunc
1997     truncf
1998 "
1999
2000 SYSTEM_FEATURES="
2001     atomics_native
2002     dos_paths
2003     libc_msvcrt
2004     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2005     section_data_rel_ro
2006     threads
2007     uwp
2008     winrt
2009 "
2010
2011 SYSTEM_FUNCS="
2012     access
2013     aligned_malloc
2014     arc4random
2015     clock_gettime
2016     closesocket
2017     CommandLineToArgvW
2018     fcntl
2019     getaddrinfo
2020     gethrtime
2021     getopt
2022     GetProcessAffinityMask
2023     GetProcessMemoryInfo
2024     GetProcessTimes
2025     getrusage
2026     GetSystemTimeAsFileTime
2027     gettimeofday
2028     glob
2029     glXGetProcAddress
2030     gmtime_r
2031     inet_aton
2032     isatty
2033     kbhit
2034     localtime_r
2035     lstat
2036     lzo1x_999_compress
2037     mach_absolute_time
2038     MapViewOfFile
2039     memalign
2040     mkstemp
2041     mmap
2042     mprotect
2043     nanosleep
2044     PeekNamedPipe
2045     posix_memalign
2046     pthread_cancel
2047     sched_getaffinity
2048     SecItemImport
2049     SetConsoleTextAttribute
2050     SetConsoleCtrlHandler
2051     setmode
2052     setrlimit
2053     Sleep
2054     strerror_r
2055     sysconf
2056     sysctl
2057     usleep
2058     UTGetOSTypeFromString
2059     VirtualAlloc
2060     wglGetProcAddress
2061 "
2062
2063 SYSTEM_LIBRARIES="
2064     vaapi_drm
2065     vaapi_x11
2066     vdpau_x11
2067     wincrypt
2068 "
2069
2070 TOOLCHAIN_FEATURES="
2071     as_arch_directive
2072     as_fpu_directive
2073     as_func
2074     as_object_arch
2075     asm_mod_q
2076     blocks_extension
2077     ebp_available
2078     ebx_available
2079     gnu_as
2080     gnu_windres
2081     ibm_asm
2082     inline_asm_direct_symbol_refs
2083     inline_asm_labels
2084     inline_asm_nonlocal_labels
2085     pragma_deprecated
2086     rsync_contimeout
2087     symver_asm_label
2088     symver_gnu_asm
2089     vfp_args
2090     xform_asm
2091     xmm_clobbers
2092 "
2093
2094 TYPES_LIST="
2095     kCMVideoCodecType_HEVC
2096     socklen_t
2097     struct_addrinfo
2098     struct_group_source_req
2099     struct_ip_mreq_source
2100     struct_ipv6_mreq
2101     struct_msghdr_msg_flags
2102     struct_pollfd
2103     struct_rusage_ru_maxrss
2104     struct_sctp_event_subscribe
2105     struct_sockaddr_in6
2106     struct_sockaddr_sa_len
2107     struct_sockaddr_storage
2108     struct_stat_st_mtim_tv_nsec
2109     struct_v4l2_frmivalenum_discrete
2110 "
2111
2112 HAVE_LIST="
2113     $ARCH_EXT_LIST
2114     $(add_suffix _external $ARCH_EXT_LIST)
2115     $(add_suffix _inline   $ARCH_EXT_LIST)
2116     $ARCH_FEATURES
2117     $ATOMICS_LIST
2118     $BUILTIN_LIST
2119     $COMPLEX_FUNCS
2120     $HAVE_LIST_CMDLINE
2121     $HAVE_LIST_PUB
2122     $HEADERS_LIST
2123     $INTRINSICS_LIST
2124     $MATH_FUNCS
2125     $SYSTEM_FEATURES
2126     $SYSTEM_FUNCS
2127     $SYSTEM_LIBRARIES
2128     $THREADS_LIST
2129     $TOOLCHAIN_FEATURES
2130     $TYPES_LIST
2131     makeinfo
2132     makeinfo_html
2133     opencl_d3d11
2134     opencl_drm_arm
2135     opencl_dxva2
2136     opencl_vaapi_beignet
2137     opencl_vaapi_intel_media
2138     perl
2139     pod2man
2140     texi2html
2141 "
2142
2143 # options emitted with CONFIG_ prefix but not available on the command line
2144 CONFIG_EXTRA="
2145     aandcttables
2146     ac3dsp
2147     adts_header
2148     audio_frame_queue
2149     audiodsp
2150     blockdsp
2151     bswapdsp
2152     cabac
2153     cbs
2154     cbs_h264
2155     cbs_h265
2156     cbs_mpeg2
2157     dirac_parse
2158     dvprofile
2159     exif
2160     faandct
2161     faanidct
2162     fdctdsp
2163     flacdsp
2164     fmtconvert
2165     frame_thread_encoder
2166     g722dsp
2167     golomb
2168     gplv3
2169     h263dsp
2170     h264chroma
2171     h264dsp
2172     h264parse
2173     h264pred
2174     h264qpel
2175     hevcparse
2176     hpeldsp
2177     huffman
2178     huffyuvdsp
2179     huffyuvencdsp
2180     idctdsp
2181     iirfilter
2182     mdct15
2183     intrax8
2184     iso_media
2185     ividsp
2186     jpegtables
2187     lgplv3
2188     libx262
2189     llauddsp
2190     llviddsp
2191     llvidencdsp
2192     lpc
2193     lzf
2194     me_cmp
2195     mpeg_er
2196     mpegaudio
2197     mpegaudiodsp
2198     mpegaudioheader
2199     mpegvideo
2200     mpegvideoenc
2201     mss34dsp
2202     pixblockdsp
2203     qpeldsp
2204     qsv
2205     qsvdec
2206     qsvenc
2207     qsvvpp
2208     rangecoder
2209     riffdec
2210     riffenc
2211     rtpdec
2212     rtpenc_chain
2213     rv34dsp
2214     sinewin
2215     snappy
2216     srtp
2217     startcode
2218     texturedsp
2219     texturedspenc
2220     tpeldsp
2221     vaapi_1
2222     vaapi_encode
2223     vc1dsp
2224     videodsp
2225     vp3dsp
2226     vp56dsp
2227     vp8dsp
2228     wma_freqs
2229     wmv2dsp
2230 "
2231
2232 CMDLINE_SELECT="
2233     $ARCH_EXT_LIST
2234     $CONFIG_LIST
2235     $HAVE_LIST_CMDLINE
2236     $THREADS_LIST
2237     asm
2238     cross_compile
2239     debug
2240     extra_warnings
2241     logging
2242     lto
2243     optimizations
2244     rpath
2245     stripping
2246 "
2247
2248 PATHS_LIST="
2249     bindir
2250     datadir
2251     docdir
2252     incdir
2253     libdir
2254     mandir
2255     pkgconfigdir
2256     prefix
2257     shlibdir
2258     install_name_dir
2259 "
2260
2261 CMDLINE_SET="
2262     $PATHS_LIST
2263     ar
2264     arch
2265     as
2266     assert_level
2267     build_suffix
2268     cc
2269     objcc
2270     cpu
2271     cross_prefix
2272     custom_allocator
2273     cxx
2274     dep_cc
2275     doxygen
2276     env
2277     extra_version
2278     gas
2279     host_cc
2280     host_cflags
2281     host_extralibs
2282     host_ld
2283     host_ldflags
2284     host_os
2285     ignore_tests
2286     install
2287     ld
2288     ln_s
2289     logfile
2290     malloc_prefix
2291     nm
2292     optflags
2293     nvccflags
2294     pkg_config
2295     pkg_config_flags
2296     progs_suffix
2297     random_seed
2298     ranlib
2299     samples
2300     strip
2301     sws_max_filter_size
2302     sysinclude
2303     sysroot
2304     target_exec
2305     target_os
2306     target_path
2307     target_samples
2308     tempprefix
2309     toolchain
2310     valgrind
2311     x86asmexe
2312 "
2313
2314 CMDLINE_APPEND="
2315     extra_cflags
2316     extra_cxxflags
2317     extra_objcflags
2318     host_cppflags
2319 "
2320
2321 # code dependency declarations
2322
2323 # architecture extensions
2324
2325 armv5te_deps="arm"
2326 armv6_deps="arm"
2327 armv6t2_deps="arm"
2328 armv8_deps="aarch64"
2329 neon_deps_any="aarch64 arm"
2330 intrinsics_neon_deps="neon"
2331 vfp_deps_any="aarch64 arm"
2332 vfpv3_deps="vfp"
2333 setend_deps="arm"
2334
2335 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2336
2337 altivec_deps="ppc"
2338 dcbzl_deps="ppc"
2339 ldbrx_deps="ppc"
2340 ppc4xx_deps="ppc"
2341 vsx_deps="altivec"
2342 power8_deps="vsx"
2343
2344 loongson2_deps="mips"
2345 loongson3_deps="mips"
2346 mips32r2_deps="mips"
2347 mips32r5_deps="mips"
2348 mips32r6_deps="mips"
2349 mips64r2_deps="mips"
2350 mips64r6_deps="mips"
2351 mipsfpu_deps="mips"
2352 mipsdsp_deps="mips"
2353 mipsdspr2_deps="mips"
2354 mmi_deps="mips"
2355 msa_deps="mipsfpu"
2356
2357 cpunop_deps="i686"
2358 x86_64_select="i686"
2359 x86_64_suggest="fast_cmov"
2360
2361 amd3dnow_deps="mmx"
2362 amd3dnowext_deps="amd3dnow"
2363 i686_deps="x86"
2364 mmx_deps="x86"
2365 mmxext_deps="mmx"
2366 sse_deps="mmxext"
2367 sse2_deps="sse"
2368 sse3_deps="sse2"
2369 ssse3_deps="sse3"
2370 sse4_deps="ssse3"
2371 sse42_deps="sse4"
2372 aesni_deps="sse42"
2373 avx_deps="sse42"
2374 xop_deps="avx"
2375 fma3_deps="avx"
2376 fma4_deps="avx"
2377 avx2_deps="avx"
2378 avx512_deps="avx2"
2379
2380 mmx_external_deps="x86asm"
2381 mmx_inline_deps="inline_asm x86"
2382 mmx_suggest="mmx_external mmx_inline"
2383
2384 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2385     eval dep=\$${ext}_deps
2386     eval ${ext}_external_deps='"${dep}_external"'
2387     eval ${ext}_inline_deps='"${dep}_inline"'
2388     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2389 done
2390
2391 aligned_stack_if_any="aarch64 ppc x86"
2392 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2393 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2394 fast_unaligned_if_any="aarch64 ppc x86"
2395 simd_align_16_if_any="altivec neon sse"
2396 simd_align_32_if_any="avx"
2397 simd_align_64_if_any="avx512"
2398
2399 # system capabilities
2400 symver_if_any="symver_asm_label symver_gnu_asm"
2401 valgrind_backtrace_conflict="optimizations"
2402 valgrind_backtrace_deps="valgrind_valgrind_h"
2403
2404 # threading support
2405 atomics_gcc_if="sync_val_compare_and_swap"
2406 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2407 atomics_win32_if="MemoryBarrier"
2408 atomics_native_if_any="$ATOMICS_LIST"
2409 w32threads_deps="atomics_native"
2410 threads_if_any="$THREADS_LIST"
2411
2412 # subsystems
2413 cbs_h264_select="cbs golomb"
2414 cbs_h265_select="cbs golomb"
2415 cbs_mpeg2_select="cbs"
2416 dct_select="rdft"
2417 dirac_parse_select="golomb"
2418 error_resilience_select="me_cmp"
2419 faandct_deps="faan"
2420 faandct_select="fdctdsp"
2421 faanidct_deps="faan"
2422 faanidct_select="idctdsp"
2423 h264dsp_select="startcode"
2424 hevcparse_select="golomb"
2425 frame_thread_encoder_deps="encoders threads"
2426 intrax8_select="blockdsp idctdsp"
2427 mdct_select="fft"
2428 mdct15_select="fft"
2429 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2430 mpeg_er_select="error_resilience"
2431 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2432 mpegaudiodsp_select="dct"
2433 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2434 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2435 vc1dsp_select="h264chroma qpeldsp startcode"
2436 rdft_select="fft"
2437
2438 # decoders / encoders
2439 aac_decoder_select="adts_header mdct15 mdct sinewin"
2440 aac_fixed_decoder_select="mdct sinewin"
2441 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2442 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2443 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2444 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2445 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2446 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2447 adpcm_g722_decoder_select="g722dsp"
2448 adpcm_g722_encoder_select="g722dsp"
2449 aic_decoder_select="golomb idctdsp"
2450 alac_encoder_select="lpc"
2451 als_decoder_select="bswapdsp"
2452 amrnb_decoder_select="lsp"
2453 amrwb_decoder_select="lsp"
2454 amv_decoder_select="sp5x_decoder exif"
2455 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2456 ape_decoder_select="bswapdsp llauddsp"
2457 apng_decoder_deps="zlib"
2458 apng_encoder_deps="zlib"
2459 apng_encoder_select="llvidencdsp"
2460 aptx_decoder_select="audio_frame_queue"
2461 aptx_encoder_select="audio_frame_queue"
2462 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2463 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2464 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2465 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2466 atrac1_decoder_select="mdct sinewin"
2467 atrac3_decoder_select="mdct"
2468 atrac3p_decoder_select="mdct sinewin"
2469 avrn_decoder_select="exif jpegtables"
2470 bink_decoder_select="blockdsp hpeldsp"
2471 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2472 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2473 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2474 clearvideo_decoder_select="idctdsp"
2475 cllc_decoder_select="bswapdsp"
2476 comfortnoise_encoder_select="lpc"
2477 cook_decoder_select="audiodsp mdct sinewin"
2478 cscd_decoder_select="lzo"
2479 cscd_decoder_suggest="zlib"
2480 dca_decoder_select="mdct"
2481 dds_decoder_select="texturedsp"
2482 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2483 dnxhd_decoder_select="blockdsp idctdsp"
2484 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2485 dolby_e_decoder_select="mdct"
2486 dvvideo_decoder_select="dvprofile idctdsp"
2487 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2488 dxa_decoder_deps="zlib"
2489 dxv_decoder_select="lzf texturedsp"
2490 eac3_decoder_select="ac3_decoder"
2491 eac3_encoder_select="ac3_encoder"
2492 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2493 eatgq_decoder_select="aandcttables"
2494 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2495 exr_decoder_deps="zlib"
2496 ffv1_decoder_select="rangecoder"
2497 ffv1_encoder_select="rangecoder"
2498 ffvhuff_decoder_select="huffyuv_decoder"
2499 ffvhuff_encoder_select="huffyuv_encoder"
2500 fic_decoder_select="golomb"
2501 flac_decoder_select="flacdsp"
2502 flac_encoder_select="bswapdsp flacdsp lpc"
2503 flashsv2_decoder_deps="zlib"
2504 flashsv2_encoder_deps="zlib"
2505 flashsv_decoder_deps="zlib"
2506 flashsv_encoder_deps="zlib"
2507 flv_decoder_select="h263_decoder"
2508 flv_encoder_select="h263_encoder"
2509 fourxm_decoder_select="blockdsp bswapdsp"
2510 fraps_decoder_select="bswapdsp huffman"
2511 g2m_decoder_deps="zlib"
2512 g2m_decoder_select="blockdsp idctdsp jpegtables"
2513 g729_decoder_select="audiodsp"
2514 h261_decoder_select="mpegvideo"
2515 h261_encoder_select="aandcttables mpegvideoenc"
2516 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2517 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2518 h263i_decoder_select="h263_decoder"
2519 h263p_decoder_select="h263_decoder"
2520 h263p_encoder_select="h263_encoder"
2521 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2522 h264_decoder_suggest="error_resilience"
2523 hap_decoder_select="snappy texturedsp"
2524 hap_encoder_deps="libsnappy"
2525 hap_encoder_select="texturedspenc"
2526 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2527 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2528 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2529 iac_decoder_select="imc_decoder"
2530 imc_decoder_select="bswapdsp fft mdct sinewin"
2531 indeo3_decoder_select="hpeldsp"
2532 indeo4_decoder_select="ividsp"
2533 indeo5_decoder_select="ividsp"
2534 interplay_video_decoder_select="hpeldsp"
2535 jpegls_decoder_select="mjpeg_decoder"
2536 jv_decoder_select="blockdsp"
2537 lagarith_decoder_select="llviddsp"
2538 ljpeg_encoder_select="aandcttables idctdsp jpegtables mpegvideoenc"
2539 magicyuv_decoder_select="llviddsp"
2540 magicyuv_encoder_select="llvidencdsp"
2541 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2542 metasound_decoder_select="lsp mdct sinewin"
2543 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2544 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2545 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2546 mjpegb_decoder_select="mjpeg_decoder"
2547 mlp_decoder_select="mlp_parser"
2548 mlp_encoder_select="lpc"
2549 motionpixels_decoder_select="bswapdsp"
2550 mp1_decoder_select="mpegaudio"
2551 mp1float_decoder_select="mpegaudio"
2552 mp2_decoder_select="mpegaudio"
2553 mp2float_decoder_select="mpegaudio"
2554 mp3_decoder_select="mpegaudio"
2555 mp3adu_decoder_select="mpegaudio"
2556 mp3adufloat_decoder_select="mpegaudio"
2557 mp3float_decoder_select="mpegaudio"
2558 mp3on4_decoder_select="mpegaudio"
2559 mp3on4float_decoder_select="mpegaudio"
2560 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2561 mpc8_decoder_select="mpegaudiodsp"
2562 mpegvideo_decoder_select="mpegvideo"
2563 mpeg1video_decoder_select="mpegvideo"
2564 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2565 mpeg2video_decoder_select="mpegvideo"
2566 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2567 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2568 mpeg4_encoder_select="h263_encoder"
2569 msa1_decoder_select="mss34dsp"
2570 mscc_decoder_deps="zlib"
2571 msmpeg4v1_decoder_select="h263_decoder"
2572 msmpeg4v2_decoder_select="h263_decoder"
2573 msmpeg4v2_encoder_select="h263_encoder"
2574 msmpeg4v3_decoder_select="h263_decoder"
2575 msmpeg4v3_encoder_select="h263_encoder"
2576 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2577 mts2_decoder_select="mss34dsp"
2578 mxpeg_decoder_select="mjpeg_decoder"
2579 nellymoser_decoder_select="mdct sinewin"
2580 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2581 nuv_decoder_select="idctdsp lzo"
2582 on2avc_decoder_select="mdct"
2583 opus_decoder_deps="swresample"
2584 opus_decoder_select="mdct15"
2585 opus_encoder_select="audio_frame_queue mdct15"
2586 png_decoder_deps="zlib"
2587 png_encoder_deps="zlib"
2588 png_encoder_select="llvidencdsp"
2589 prores_decoder_select="blockdsp idctdsp"
2590 prores_encoder_select="fdctdsp"
2591 qcelp_decoder_select="lsp"
2592 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2593 ra_144_decoder_select="audiodsp"
2594 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2595 ralf_decoder_select="golomb"
2596 rawvideo_decoder_select="bswapdsp"
2597 rscc_decoder_deps="zlib"
2598 rtjpeg_decoder_select="me_cmp"
2599 rv10_decoder_select="h263_decoder"
2600 rv10_encoder_select="h263_encoder"
2601 rv20_decoder_select="h263_decoder"
2602 rv20_encoder_select="h263_encoder"
2603 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2604 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2605 screenpresso_decoder_deps="zlib"
2606 shorten_decoder_select="bswapdsp"
2607 sipr_decoder_select="lsp"
2608 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2609 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2610 sonic_decoder_select="golomb rangecoder"
2611 sonic_encoder_select="golomb rangecoder"
2612 sonic_ls_encoder_select="golomb rangecoder"
2613 sp5x_decoder_select="mjpeg_decoder"
2614 srgc_decoder_deps="zlib"
2615 svq1_decoder_select="hpeldsp"
2616 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2617 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2618 svq3_decoder_suggest="zlib"
2619 tak_decoder_select="audiodsp"
2620 tdsc_decoder_deps="zlib"
2621 tdsc_decoder_select="mjpeg_decoder"
2622 theora_decoder_select="vp3_decoder"
2623 thp_decoder_select="mjpeg_decoder"
2624 tiff_decoder_suggest="zlib lzma"
2625 tiff_encoder_suggest="zlib"
2626 truehd_decoder_select="mlp_parser"
2627 truehd_encoder_select="lpc"
2628 truemotion2_decoder_select="bswapdsp"
2629 truespeech_decoder_select="bswapdsp"
2630 tscc_decoder_deps="zlib"
2631 twinvq_decoder_select="mdct lsp sinewin"
2632 txd_decoder_select="texturedsp"
2633 utvideo_decoder_select="bswapdsp llviddsp"
2634 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2635 vble_decoder_select="llviddsp"
2636 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2637 vc1image_decoder_select="vc1_decoder"
2638 vorbis_decoder_select="mdct"
2639 vorbis_encoder_select="mdct"
2640 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2641 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2642 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2643 vp6a_decoder_select="vp6_decoder"
2644 vp6f_decoder_select="vp6_decoder"
2645 vp7_decoder_select="h264pred videodsp vp8dsp"
2646 vp8_decoder_select="h264pred videodsp vp8dsp"
2647 vp9_decoder_select="videodsp vp9_parser vp9_superframe_split_bsf"
2648 webp_decoder_select="vp8_decoder exif"
2649 wmalossless_decoder_select="llauddsp"
2650 wmapro_decoder_select="mdct sinewin wma_freqs"
2651 wmav1_decoder_select="mdct sinewin wma_freqs"
2652 wmav1_encoder_select="mdct sinewin wma_freqs"
2653 wmav2_decoder_select="mdct sinewin wma_freqs"
2654 wmav2_encoder_select="mdct sinewin wma_freqs"
2655 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2656 wmv1_decoder_select="h263_decoder"
2657 wmv1_encoder_select="h263_encoder"
2658 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2659 wmv2_encoder_select="h263_encoder wmv2dsp"
2660 wmv3_decoder_select="vc1_decoder"
2661 wmv3image_decoder_select="wmv3_decoder"
2662 xma1_decoder_select="wmapro_decoder"
2663 xma2_decoder_select="wmapro_decoder"
2664 zerocodec_decoder_deps="zlib"
2665 zlib_decoder_deps="zlib"
2666 zlib_encoder_deps="zlib"
2667 zmbv_decoder_deps="zlib"
2668 zmbv_encoder_deps="zlib"
2669
2670 # hardware accelerators
2671 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2672 cuda_deps_any="libdl LoadLibrary"
2673 cuvid_deps="cuda"
2674 d3d11va_deps="dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2675 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32 user32"
2676 nvdec_deps="cuda"
2677 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2678 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2679 xvmc_deps="X11_extensions_XvMClib_h"
2680
2681 h263_vaapi_hwaccel_deps="vaapi"
2682 h263_vaapi_hwaccel_select="h263_decoder"
2683 h263_videotoolbox_hwaccel_deps="videotoolbox"
2684 h263_videotoolbox_hwaccel_select="h263_decoder"
2685 h264_d3d11va_hwaccel_deps="d3d11va"
2686 h264_d3d11va_hwaccel_select="h264_decoder"
2687 h264_d3d11va2_hwaccel_deps="d3d11va"
2688 h264_d3d11va2_hwaccel_select="h264_decoder"
2689 h264_dxva2_hwaccel_deps="dxva2"
2690 h264_dxva2_hwaccel_select="h264_decoder"
2691 h264_nvdec_hwaccel_deps="nvdec"
2692 h264_nvdec_hwaccel_select="h264_decoder"
2693 h264_vaapi_hwaccel_deps="vaapi"
2694 h264_vaapi_hwaccel_select="h264_decoder"
2695 h264_vdpau_hwaccel_deps="vdpau"
2696 h264_vdpau_hwaccel_select="h264_decoder"
2697 h264_videotoolbox_hwaccel_deps="videotoolbox"
2698 h264_videotoolbox_hwaccel_select="h264_decoder"
2699 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2700 hevc_d3d11va_hwaccel_select="hevc_decoder"
2701 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2702 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2703 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2704 hevc_dxva2_hwaccel_select="hevc_decoder"
2705 hevc_nvdec_hwaccel_deps="nvdec"
2706 hevc_nvdec_hwaccel_select="hevc_decoder"
2707 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2708 hevc_vaapi_hwaccel_select="hevc_decoder"
2709 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2710 hevc_vdpau_hwaccel_select="hevc_decoder"
2711 hevc_videotoolbox_hwaccel_deps="videotoolbox"
2712 hevc_videotoolbox_hwaccel_select="hevc_decoder"
2713 mpeg_xvmc_hwaccel_deps="xvmc"
2714 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2715 mpeg1_nvdec_hwaccel_deps="nvdec"
2716 mpeg1_nvdec_hwaccel_select="mpeg1video_decoder"
2717 mpeg1_vdpau_hwaccel_deps="vdpau"
2718 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2719 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2720 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2721 mpeg1_xvmc_hwaccel_deps="xvmc"
2722 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2723 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2724 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2725 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2726 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2727 mpeg2_dxva2_hwaccel_deps="dxva2"
2728 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2729 mpeg2_nvdec_hwaccel_deps="nvdec"
2730 mpeg2_nvdec_hwaccel_select="mpeg2video_decoder"
2731 mpeg2_vaapi_hwaccel_deps="vaapi"
2732 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2733 mpeg2_vdpau_hwaccel_deps="vdpau"
2734 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2735 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2736 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2737 mpeg2_xvmc_hwaccel_deps="xvmc"
2738 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2739 mpeg4_nvdec_hwaccel_deps="nvdec"
2740 mpeg4_nvdec_hwaccel_select="mpeg4_decoder"
2741 mpeg4_vaapi_hwaccel_deps="vaapi"
2742 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2743 mpeg4_vdpau_hwaccel_deps="vdpau"
2744 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2745 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2746 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2747 vc1_d3d11va_hwaccel_deps="d3d11va"
2748 vc1_d3d11va_hwaccel_select="vc1_decoder"
2749 vc1_d3d11va2_hwaccel_deps="d3d11va"
2750 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2751 vc1_dxva2_hwaccel_deps="dxva2"
2752 vc1_dxva2_hwaccel_select="vc1_decoder"
2753 vc1_nvdec_hwaccel_deps="nvdec"
2754 vc1_nvdec_hwaccel_select="vc1_decoder"
2755 vc1_vaapi_hwaccel_deps="vaapi"
2756 vc1_vaapi_hwaccel_select="vc1_decoder"
2757 vc1_vdpau_hwaccel_deps="vdpau"
2758 vc1_vdpau_hwaccel_select="vc1_decoder"
2759 vp8_nvdec_hwaccel_deps="nvdec"
2760 vp8_nvdec_hwaccel_select="vp8_decoder"
2761 vp8_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferVP8"
2762 vp8_vaapi_hwaccel_select="vp8_decoder"
2763 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2764 vp9_d3d11va_hwaccel_select="vp9_decoder"
2765 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2766 vp9_d3d11va2_hwaccel_select="vp9_decoder"
2767 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2768 vp9_dxva2_hwaccel_select="vp9_decoder"
2769 vp9_nvdec_hwaccel_deps="nvdec"
2770 vp9_nvdec_hwaccel_select="vp9_decoder"
2771 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2772 vp9_vaapi_hwaccel_select="vp9_decoder"
2773 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2774 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2775 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2776 wmv3_nvdec_hwaccel_select="vc1_nvdec_hwaccel"
2777 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2778 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2779
2780 # hardware-accelerated codecs
2781 omx_deps="libdl pthreads"
2782 omx_rpi_select="omx"
2783 qsv_deps="libmfx"
2784 qsvdec_select="qsv"
2785 qsvenc_select="qsv"
2786 qsvvpp_select="qsv"
2787 vaapi_encode_deps="vaapi"
2788 v4l2_m2m_deps_any="linux_videodev2_h"
2789
2790 hwupload_cuda_filter_deps="cuda"
2791 scale_npp_filter_deps="cuda libnpp"
2792 scale_cuda_filter_deps="cuda_sdk"
2793 thumbnail_cuda_filter_deps="cuda_sdk"
2794
2795 amf_deps_any="libdl LoadLibrary"
2796 nvenc_deps="cuda"
2797 nvenc_deps_any="libdl LoadLibrary"
2798 nvenc_encoder_deps="nvenc"
2799
2800 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
2801 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
2802 h264_amf_encoder_deps="amf"
2803 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2804 h264_cuvid_decoder_deps="cuvid"
2805 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2806 h264_mediacodec_decoder_deps="mediacodec"
2807 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2808 h264_mmal_decoder_deps="mmal"
2809 h264_nvenc_encoder_deps="nvenc"
2810 h264_omx_encoder_deps="omx"
2811 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec"
2812 h264_qsv_encoder_select="qsvenc"
2813 h264_rkmpp_decoder_deps="rkmpp"
2814 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
2815 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2816 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
2817 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
2818 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
2819 hevc_amf_encoder_deps="amf"
2820 hevc_cuvid_decoder_deps="cuvid"
2821 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
2822 hevc_mediacodec_decoder_deps="mediacodec"
2823 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2824 hevc_nvenc_encoder_deps="nvenc"
2825 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec"
2826 hevc_qsv_encoder_select="hevcparse qsvenc"
2827 hevc_rkmpp_decoder_deps="rkmpp"
2828 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
2829 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2830 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
2831 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
2832 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
2833 mjpeg_cuvid_decoder_deps="cuvid"
2834 mjpeg_qsv_encoder_deps="libmfx"
2835 mjpeg_qsv_encoder_select="qsvenc"
2836 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2837 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2838 mpeg1_cuvid_decoder_deps="cuvid"
2839 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
2840 mpeg2_crystalhd_decoder_select="crystalhd"
2841 mpeg2_cuvid_decoder_deps="cuvid"
2842 mpeg2_mmal_decoder_deps="mmal"
2843 mpeg2_mediacodec_decoder_deps="mediacodec"
2844 mpeg2_qsv_decoder_select="qsvdec mpegvideo_parser"
2845 mpeg2_qsv_encoder_select="qsvenc"
2846 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2847 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
2848 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
2849 mpeg4_crystalhd_decoder_select="crystalhd"
2850 mpeg4_cuvid_decoder_deps="cuvid"
2851 mpeg4_mediacodec_decoder_deps="mediacodec"
2852 mpeg4_mmal_decoder_deps="mmal"
2853 mpeg4_omx_encoder_deps="omx"
2854 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2855 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2856 msmpeg4_crystalhd_decoder_select="crystalhd"
2857 nvenc_h264_encoder_select="h264_nvenc_encoder"
2858 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2859 vc1_crystalhd_decoder_select="crystalhd"
2860 vc1_cuvid_decoder_deps="cuvid"
2861 vc1_mmal_decoder_deps="mmal"
2862 vc1_qsv_decoder_select="qsvdec vc1_parser"
2863 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
2864 vp8_cuvid_decoder_deps="cuvid"
2865 vp8_mediacodec_decoder_deps="mediacodec"
2866 vp8_qsv_decoder_select="qsvdec vp8_parser"
2867 vp8_rkmpp_decoder_deps="rkmpp"
2868 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2869 vp8_vaapi_encoder_select="vaapi_encode"
2870 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
2871 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
2872 vp9_cuvid_decoder_deps="cuvid"
2873 vp9_mediacodec_decoder_deps="mediacodec"
2874 vp9_rkmpp_decoder_deps="rkmpp"
2875 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
2876 vp9_vaapi_encoder_select="vaapi_encode"
2877 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
2878 wmv3_crystalhd_decoder_select="crystalhd"
2879
2880 # parsers
2881 aac_parser_select="adts_header"
2882 h264_parser_select="golomb h264dsp h264parse"
2883 hevc_parser_select="hevcparse"
2884 mpegaudio_parser_select="mpegaudioheader"
2885 mpegvideo_parser_select="mpegvideo"
2886 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2887 vc1_parser_select="vc1dsp"
2888
2889 # bitstream_filters
2890 aac_adtstoasc_bsf_select="adts_header"
2891 h264_metadata_bsf_select="cbs_h264"
2892 h264_redundant_pps_bsf_select="cbs_h264"
2893 hevc_metadata_bsf_select="cbs_h265"
2894 mjpeg2jpeg_bsf_select="jpegtables"
2895 mpeg2_metadata_bsf_select="cbs_mpeg2"
2896 trace_headers_bsf_select="cbs_h264 cbs_h265 cbs_mpeg2"
2897
2898 # external libraries
2899 aac_at_decoder_deps="audiotoolbox"
2900 aac_at_decoder_select="aac_adtstoasc_bsf"
2901 ac3_at_decoder_deps="audiotoolbox"
2902 ac3_at_decoder_select="ac3_parser"
2903 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2904 alac_at_decoder_deps="audiotoolbox"
2905 amr_nb_at_decoder_deps="audiotoolbox"
2906 avisynth_deps_any="libdl LoadLibrary"
2907 avisynth_demuxer_deps="avisynth"
2908 avisynth_demuxer_select="riffdec"
2909 eac3_at_decoder_deps="audiotoolbox"
2910 eac3_at_decoder_select="ac3_parser"
2911 gsm_ms_at_decoder_deps="audiotoolbox"
2912 ilbc_at_decoder_deps="audiotoolbox"
2913 mp1_at_decoder_deps="audiotoolbox"
2914 mp2_at_decoder_deps="audiotoolbox"
2915 mp3_at_decoder_deps="audiotoolbox"
2916 mp1_at_decoder_select="mpegaudioheader"
2917 mp2_at_decoder_select="mpegaudioheader"
2918 mp3_at_decoder_select="mpegaudioheader"
2919 pcm_alaw_at_decoder_deps="audiotoolbox"
2920 pcm_mulaw_at_decoder_deps="audiotoolbox"
2921 qdmc_at_decoder_deps="audiotoolbox"
2922 qdm2_at_decoder_deps="audiotoolbox"
2923 aac_at_encoder_deps="audiotoolbox"
2924 aac_at_encoder_select="audio_frame_queue"
2925 alac_at_encoder_deps="audiotoolbox"
2926 alac_at_encoder_select="audio_frame_queue"
2927 ilbc_at_encoder_deps="audiotoolbox"
2928 ilbc_at_encoder_select="audio_frame_queue"
2929 pcm_alaw_at_encoder_deps="audiotoolbox"
2930 pcm_alaw_at_encoder_select="audio_frame_queue"
2931 pcm_mulaw_at_encoder_deps="audiotoolbox"
2932 pcm_mulaw_at_encoder_select="audio_frame_queue"
2933 chromaprint_muxer_deps="chromaprint"
2934 h264_videotoolbox_encoder_deps="pthreads"
2935 h264_videotoolbox_encoder_select="videotoolbox_encoder"
2936 hevc_videotoolbox_encoder_deps="pthreads"
2937 hevc_videotoolbox_encoder_select="videotoolbox_encoder"
2938 libcelt_decoder_deps="libcelt"
2939 libfdk_aac_decoder_deps="libfdk_aac"
2940 libfdk_aac_encoder_deps="libfdk_aac"
2941 libfdk_aac_encoder_select="audio_frame_queue"
2942 libgme_demuxer_deps="libgme"
2943 libgsm_decoder_deps="libgsm"
2944 libgsm_encoder_deps="libgsm"
2945 libgsm_ms_decoder_deps="libgsm"
2946 libgsm_ms_encoder_deps="libgsm"
2947 libilbc_decoder_deps="libilbc"
2948 libilbc_encoder_deps="libilbc"
2949 libkvazaar_encoder_deps="libkvazaar"
2950 libmodplug_demuxer_deps="libmodplug"
2951 libmp3lame_encoder_deps="libmp3lame"
2952 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2953 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2954 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2955 libopencore_amrnb_encoder_select="audio_frame_queue"
2956 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2957 libopenh264_decoder_deps="libopenh264"
2958 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2959 libopenh264_encoder_deps="libopenh264"
2960 libopenjpeg_decoder_deps="libopenjpeg"
2961 libopenjpeg_encoder_deps="libopenjpeg"
2962 libopenmpt_demuxer_deps="libopenmpt"
2963 libopus_decoder_deps="libopus"
2964 libopus_encoder_deps="libopus"
2965 libopus_encoder_select="audio_frame_queue"
2966 librsvg_decoder_deps="librsvg"
2967 libshine_encoder_deps="libshine"
2968 libshine_encoder_select="audio_frame_queue"
2969 libspeex_decoder_deps="libspeex"
2970 libspeex_encoder_deps="libspeex"
2971 libspeex_encoder_select="audio_frame_queue"
2972 libtheora_encoder_deps="libtheora"
2973 libtwolame_encoder_deps="libtwolame"
2974 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2975 libvorbis_decoder_deps="libvorbis"
2976 libvorbis_encoder_deps="libvorbis libvorbisenc"
2977 libvorbis_encoder_select="audio_frame_queue"
2978 libvpx_vp8_decoder_deps="libvpx"
2979 libvpx_vp8_encoder_deps="libvpx"
2980 libvpx_vp9_decoder_deps="libvpx"
2981 libvpx_vp9_encoder_deps="libvpx"
2982 libwavpack_encoder_deps="libwavpack"
2983 libwavpack_encoder_select="audio_frame_queue"
2984 libwebp_encoder_deps="libwebp"
2985 libwebp_anim_encoder_deps="libwebp"
2986 libx262_encoder_deps="libx262"
2987 libx264_encoder_deps="libx264"
2988 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2989 libx264rgb_encoder_select="libx264_encoder"
2990 libx265_encoder_deps="libx265"
2991 libxavs_encoder_deps="libxavs"
2992 libxvid_encoder_deps="libxvid"
2993 libzvbi_teletext_decoder_deps="libzvbi"
2994 videotoolbox_suggest="coreservices"
2995 videotoolbox_deps="corefoundation coremedia corevideo"
2996 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2997
2998 # demuxers / muxers
2999 ac3_demuxer_select="ac3_parser"
3000 aiff_muxer_select="iso_media"
3001 asf_demuxer_select="riffdec"
3002 asf_o_demuxer_select="riffdec"
3003 asf_muxer_select="riffenc"
3004 asf_stream_muxer_select="asf_muxer"
3005 avi_demuxer_select="iso_media riffdec exif"
3006 avi_muxer_select="riffenc"
3007 caf_demuxer_select="iso_media riffdec"
3008 caf_muxer_select="iso_media"
3009 dash_muxer_select="mp4_muxer"
3010 dash_demuxer_deps="libxml2"
3011 dirac_demuxer_select="dirac_parser"
3012 dts_demuxer_select="dca_parser"
3013 dtshd_demuxer_select="dca_parser"
3014 dv_demuxer_select="dvprofile"
3015 dv_muxer_select="dvprofile"
3016 dxa_demuxer_select="riffdec"
3017 eac3_demuxer_select="ac3_parser"
3018 f4v_muxer_select="mov_muxer"
3019 fifo_muxer_deps="threads"
3020 flac_demuxer_select="flac_parser"
3021 hds_muxer_select="flv_muxer"
3022 hls_muxer_select="mpegts_muxer"
3023 hls_muxer_suggest="gcrypt openssl"
3024 image2_alias_pix_demuxer_select="image2_demuxer"
3025 image2_brender_pix_demuxer_select="image2_demuxer"
3026 ipod_muxer_select="mov_muxer"
3027 ismv_muxer_select="mov_muxer"
3028 matroska_audio_muxer_select="matroska_muxer"
3029 matroska_demuxer_select="iso_media riffdec"
3030 matroska_demuxer_suggest="bzlib lzo zlib"
3031 matroska_muxer_select="iso_media riffenc"
3032 mmf_muxer_select="riffenc"
3033 mov_demuxer_select="iso_media riffdec"
3034 mov_demuxer_suggest="zlib"
3035 mov_muxer_select="iso_media riffenc rtpenc_chain"
3036 mp3_demuxer_select="mpegaudio_parser"
3037 mp3_muxer_select="mpegaudioheader"
3038 mp4_muxer_select="mov_muxer"
3039 mpegts_demuxer_select="iso_media"
3040 mpegts_muxer_select="adts_muxer latm_muxer"
3041 mpegtsraw_demuxer_select="mpegts_demuxer"
3042 mxf_d10_muxer_select="mxf_muxer"
3043 mxf_opatom_muxer_select="mxf_muxer"
3044 nut_muxer_select="riffenc"
3045 nuv_demuxer_select="riffdec"
3046 oga_muxer_select="ogg_muxer"
3047 ogg_demuxer_select="dirac_parse"
3048 ogv_muxer_select="ogg_muxer"
3049 opus_muxer_select="ogg_muxer"
3050 psp_muxer_select="mov_muxer"
3051 rtp_demuxer_select="sdp_demuxer"
3052 rtp_muxer_select="golomb"
3053 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3054 rtsp_demuxer_select="http_protocol rtpdec"
3055 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3056 sap_demuxer_select="sdp_demuxer"
3057 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3058 sdp_demuxer_select="rtpdec"
3059 smoothstreaming_muxer_select="ismv_muxer"
3060 spdif_demuxer_select="adts_header"
3061 spdif_muxer_select="adts_header"
3062 spx_muxer_select="ogg_muxer"
3063 swf_demuxer_suggest="zlib"
3064 tak_demuxer_select="tak_parser"
3065 tg2_muxer_select="mov_muxer"
3066 tgp_muxer_select="mov_muxer"
3067 vobsub_demuxer_select="mpegps_demuxer"
3068 w64_demuxer_select="wav_demuxer"
3069 w64_muxer_select="wav_muxer"
3070 wav_demuxer_select="riffdec"
3071 wav_muxer_select="riffenc"
3072 webm_muxer_select="iso_media riffenc"
3073 webm_dash_manifest_demuxer_select="matroska_demuxer"
3074 wtv_demuxer_select="mpegts_demuxer riffdec"
3075 wtv_muxer_select="mpegts_muxer riffenc"
3076 xmv_demuxer_select="riffdec"
3077 xwma_demuxer_select="riffdec"
3078
3079 # indevs / outdevs
3080 alsa_indev_deps="alsa"
3081 alsa_outdev_deps="alsa"
3082 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3083 avfoundation_indev_suggest="coregraphics applicationservices"
3084 avfoundation_indev_extralibs="-framework Foundation"
3085 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3086 caca_outdev_deps="libcaca"
3087 decklink_deps_any="libdl LoadLibrary"
3088 decklink_indev_deps="decklink threads"
3089 decklink_indev_extralibs="-lstdc++"
3090 decklink_outdev_deps="decklink threads"
3091 decklink_outdev_extralibs="-lstdc++"
3092 libndi_newtek_indev_deps="libndi_newtek"
3093 libndi_newtek_indev_extralibs="-lndi"
3094 libndi_newtek_outdev_deps="libndi_newtek"
3095 libndi_newtek_outdev_extralibs="-lndi"
3096 dshow_indev_deps="IBaseFilter"
3097 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3098 fbdev_indev_deps="linux_fb_h"
3099 fbdev_outdev_deps="linux_fb_h"
3100 gdigrab_indev_deps="CreateDIBSection"
3101 gdigrab_indev_extralibs="-lgdi32"
3102 gdigrab_indev_select="bmp_decoder"
3103 iec61883_indev_deps="libiec61883"
3104 jack_indev_deps="libjack"
3105 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3106 kmsgrab_indev_deps="libdrm"
3107 lavfi_indev_deps="avfilter"
3108 libcdio_indev_deps="libcdio"
3109 libdc1394_indev_deps="libdc1394"
3110 openal_indev_deps="openal"
3111 opengl_outdev_deps="opengl"
3112 oss_indev_deps_any="sys_soundcard_h"
3113 oss_outdev_deps_any="sys_soundcard_h"
3114 pulse_indev_deps="libpulse"
3115 pulse_outdev_deps="libpulse"
3116 sdl2_outdev_deps="sdl2"
3117 sndio_indev_deps="sndio"
3118 sndio_outdev_deps="sndio"
3119 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3120 v4l2_indev_suggest="libv4l2"
3121 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3122 v4l2_outdev_suggest="libv4l2"
3123 vfwcap_indev_deps="vfw32 vfwcap_defines"
3124 xcbgrab_indev_deps="libxcb"
3125 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3126 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
3127 xv_outdev_extralibs="-lXv -lX11 -lXext"
3128
3129 # protocols
3130 async_protocol_deps="threads"
3131 bluray_protocol_deps="libbluray"
3132 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3133 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
3134 ffrtmpcrypt_protocol_select="tcp_protocol"
3135 ffrtmphttp_protocol_conflict="librtmp_protocol"
3136 ffrtmphttp_protocol_select="http_protocol"
3137 ftp_protocol_select="tcp_protocol"
3138 gopher_protocol_select="network"
3139 http_protocol_select="tcp_protocol"
3140 http_protocol_suggest="zlib"
3141 httpproxy_protocol_select="tcp_protocol"
3142 httpproxy_protocol_suggest="zlib"
3143 https_protocol_select="tls_protocol"
3144 https_protocol_suggest="zlib"
3145 icecast_protocol_select="http_protocol"
3146 librtmp_protocol_deps="librtmp"
3147 librtmpe_protocol_deps="librtmp"
3148 librtmps_protocol_deps="librtmp"
3149 librtmpt_protocol_deps="librtmp"
3150 librtmpte_protocol_deps="librtmp"
3151 libsmbclient_protocol_deps="libsmbclient gplv3"
3152 libssh_protocol_deps="libssh"
3153 libtls_conflict="openssl gnutls"
3154 mmsh_protocol_select="http_protocol"
3155 mmst_protocol_select="network"
3156 rtmp_protocol_conflict="librtmp_protocol"
3157 rtmp_protocol_select="tcp_protocol"
3158 rtmp_protocol_suggest="zlib"
3159 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3160 rtmpe_protocol_suggest="zlib"
3161 rtmps_protocol_conflict="librtmp_protocol"
3162 rtmps_protocol_select="tls_protocol"
3163 rtmps_protocol_suggest="zlib"
3164 rtmpt_protocol_select="ffrtmphttp_protocol"
3165 rtmpt_protocol_suggest="zlib"
3166 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3167 rtmpte_protocol_suggest="zlib"
3168 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3169 rtmpts_protocol_suggest="zlib"
3170 rtp_protocol_select="udp_protocol"
3171 schannel_conflict="openssl gnutls libtls"
3172 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3173 sctp_protocol_select="network"
3174 securetransport_conflict="openssl gnutls libtls"
3175 srtp_protocol_select="rtp_protocol srtp"
3176 tcp_protocol_select="network"
3177 tls_protocol_deps_any="gnutls openssl schannel securetransport libtls"
3178 tls_protocol_select="tcp_protocol"
3179 udp_protocol_select="network"
3180 udplite_protocol_select="network"
3181 unix_protocol_deps="sys_un_h"
3182 unix_protocol_select="network"
3183
3184 # filters
3185 afftfilt_filter_deps="avcodec"
3186 afftfilt_filter_select="fft"
3187 afir_filter_deps="avcodec"
3188 afir_filter_select="fft"
3189 amovie_filter_deps="avcodec avformat"
3190 aresample_filter_deps="swresample"
3191 ass_filter_deps="libass"
3192 atempo_filter_deps="avcodec"
3193 atempo_filter_select="rdft"
3194 azmq_filter_deps="libzmq"
3195 blackframe_filter_deps="gpl"
3196 boxblur_filter_deps="gpl"
3197 bs2b_filter_deps="libbs2b"
3198 colormatrix_filter_deps="gpl"
3199 coreimage_filter_deps="coreimage appkit"
3200 coreimage_filter_extralibs="-framework OpenGL"
3201 coreimagesrc_filter_deps="coreimage appkit"
3202 coreimagesrc_filter_extralibs="-framework OpenGL"
3203 cover_rect_filter_deps="avcodec avformat gpl"
3204 cropdetect_filter_deps="gpl"
3205 deinterlace_qsv_filter_deps="libmfx"
3206 deinterlace_vaapi_filter_deps="vaapi"
3207 delogo_filter_deps="gpl"
3208 deshake_filter_select="pixelutils"
3209 drawtext_filter_deps="libfreetype"
3210 drawtext_filter_suggest="libfontconfig libfribidi"
3211 elbg_filter_deps="avcodec"
3212 eq_filter_deps="gpl"
3213 fftfilt_filter_deps="avcodec"
3214 fftfilt_filter_select="rdft"
3215 find_rect_filter_deps="avcodec avformat gpl"
3216 firequalizer_filter_deps="avcodec"
3217 firequalizer_filter_select="rdft"
3218 flite_filter_deps="libflite"
3219 framerate_filter_select="pixelutils"
3220 frei0r_filter_deps="frei0r libdl"
3221 frei0r_src_filter_deps="frei0r libdl"
3222 fspp_filter_deps="gpl"
3223 geq_filter_deps="gpl"
3224 histeq_filter_deps="gpl"
3225 hqdn3d_filter_deps="gpl"
3226 interlace_filter_deps="gpl"
3227 kerndeint_filter_deps="gpl"
3228 ladspa_filter_deps="ladspa libdl"
3229 lv2_filter_deps="lv2"
3230 mcdeint_filter_deps="avcodec gpl"
3231 movie_filter_deps="avcodec avformat"
3232 mpdecimate_filter_deps="gpl"
3233 mpdecimate_filter_select="pixelutils"
3234 mptestsrc_filter_deps="gpl"
3235 negate_filter_deps="lut_filter"
3236 nnedi_filter_deps="gpl"
3237 ocr_filter_deps="libtesseract"
3238 ocv_filter_deps="libopencv"
3239 overlay_opencl_filter_deps="opencl"
3240 overlay_qsv_filter_deps="libmfx"
3241 overlay_qsv_filter_select="qsvvpp"
3242 owdenoise_filter_deps="gpl"
3243 pan_filter_deps="swresample"
3244 perspective_filter_deps="gpl"
3245 phase_filter_deps="gpl"
3246 pp7_filter_deps="gpl"
3247 pp_filter_deps="gpl postproc"
3248 pullup_filter_deps="gpl"
3249 removelogo_filter_deps="avcodec avformat swscale"
3250 repeatfields_filter_deps="gpl"
3251 resample_filter_deps="avresample"
3252 rubberband_filter_deps="librubberband"
3253 sab_filter_deps="gpl swscale"
3254 scale2ref_filter_deps="swscale"
3255 scale_filter_deps="swscale"
3256 scale_qsv_filter_deps="libmfx"
3257 select_filter_select="pixelutils"
3258 showcqt_filter_deps="avcodec avformat swscale"
3259 showcqt_filter_suggest="libfontconfig libfreetype"
3260 showcqt_filter_select="fft"
3261 showfreqs_filter_deps="avcodec"
3262 showfreqs_filter_select="fft"
3263 showspectrum_filter_deps="avcodec"
3264 showspectrum_filter_select="fft"
3265 showspectrumpic_filter_deps="avcodec"
3266 showspectrumpic_filter_select="fft"
3267 signature_filter_deps="gpl avcodec avformat"
3268 smartblur_filter_deps="gpl swscale"
3269 sofalizer_filter_deps="libmysofa avcodec"
3270 sofalizer_filter_select="fft"
3271 spectrumsynth_filter_deps="avcodec"
3272 spectrumsynth_filter_select="fft"
3273 spp_filter_deps="gpl avcodec"
3274 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3275 stereo3d_filter_deps="gpl"
3276 subtitles_filter_deps="avformat avcodec libass"
3277 super2xsai_filter_deps="gpl"
3278 pixfmts_super2xsai_test_deps="super2xsai_filter"
3279 tinterlace_filter_deps="gpl"
3280 tinterlace_merge_test_deps="tinterlace_filter"
3281 tinterlace_pad_test_deps="tinterlace_filter"
3282 tonemap_filter_deps="const_nan"
3283 unsharp_opencl_filter_deps="opencl"
3284 uspp_filter_deps="gpl avcodec"
3285 vaguedenoiser_filter_deps="gpl"
3286 vidstabdetect_filter_deps="libvidstab"
3287 vidstabtransform_filter_deps="libvidstab"
3288 libvmaf_filter_deps="libvmaf"
3289 zmq_filter_deps="libzmq"
3290 zoompan_filter_deps="swscale"
3291 zscale_filter_deps="libzimg const_nan"
3292 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3293 vpp_qsv_filter_deps="libmfx"
3294 vpp_qsv_filter_select="qsvvpp"
3295
3296 # examples
3297 avio_dir_cmd_deps="avformat avutil"
3298 avio_reading_deps="avformat avcodec avutil"
3299 decode_audio_example_deps="avcodec avutil"
3300 decode_video_example_deps="avcodec avutil"
3301 demuxing_decoding_example_deps="avcodec avformat avutil"
3302 encode_audio_example_deps="avcodec avutil"
3303 encode_video_example_deps="avcodec avutil"
3304 extract_mvs_example_deps="avcodec avformat avutil"
3305 filter_audio_example_deps="avfilter avutil"
3306 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3307 filtering_video_example_deps="avfilter avcodec avformat avutil"
3308 http_multiclient_example_deps="avformat avutil fork"
3309 hw_decode_example_deps="avcodec avformat avutil"
3310 metadata_example_deps="avformat avutil"
3311 muxing_example_deps="avcodec avformat avutil swscale"
3312 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3313 remuxing_example_deps="avcodec avformat avutil"
3314 resampling_audio_example_deps="avutil swresample"
3315 scaling_video_example_deps="avutil swscale"
3316 transcode_aac_example_deps="avcodec avformat swresample"
3317 transcoding_example_deps="avfilter avcodec avformat avutil"
3318 vaapi_encode_example_deps="avcodec avutil"
3319
3320 # EXTRALIBS_LIST
3321 cpu_init_extralibs="pthreads_extralibs"
3322 cws2fws_extralibs="zlib_extralibs"
3323
3324 # libraries, in linking order
3325 avcodec_deps="avutil"
3326 avcodec_suggest="libm"
3327 avcodec_select="null_bsf"
3328 avdevice_deps="avformat avcodec avutil"
3329 avdevice_suggest="libm"
3330 avfilter_deps="avutil"
3331 avfilter_suggest="libm"
3332 avformat_deps="avcodec avutil"
3333 avformat_suggest="libm network zlib"
3334 avresample_deps="avutil"
3335 avresample_suggest="libm"
3336 avutil_suggest="clock_gettime cuda libm libdrm libmfx opencl user32 vaapi videotoolbox corefoundation corevideo coremedia wincrypt"
3337 postproc_deps="avutil gpl"
3338 postproc_suggest="libm"
3339 swresample_deps="avutil"
3340 swresample_suggest="libm libsoxr"
3341 swscale_deps="avutil"
3342 swscale_suggest="libm"
3343
3344 avcodec_extralibs="pthreads_extralibs iconv_extralibs"
3345 avfilter_extralibs="pthreads_extralibs"
3346 avutil_extralibs="d3d11va_extralibs nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3347
3348 # programs
3349 ffmpeg_deps="avcodec avfilter avformat swresample"
3350 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3351                null_filter
3352                trim_filter"
3353 ffmpeg_suggest="ole32 psapi shell32"
3354 ffplay_deps="avcodec avformat swscale swresample sdl2"
3355 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3356 ffplay_suggest="shell32"
3357 ffprobe_deps="avcodec avformat"
3358 ffprobe_suggest="shell32"
3359 ffserver_deps="avformat fork sarestart"
3360 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3361
3362 # documentation
3363 podpages_deps="perl"
3364 manpages_deps="perl pod2man"
3365 htmlpages_deps="perl"
3366 htmlpages_deps_any="makeinfo_html texi2html"
3367 txtpages_deps="perl makeinfo"
3368 doc_deps_any="manpages htmlpages podpages txtpages"
3369
3370 # default parameters
3371
3372 logfile="ffbuild/config.log"
3373
3374 # installation paths
3375 prefix_default="/usr/local"
3376 bindir_default='${prefix}/bin'
3377 datadir_default='${prefix}/share/ffmpeg'
3378 docdir_default='${prefix}/share/doc/ffmpeg'
3379 incdir_default='${prefix}/include'
3380 libdir_default='${prefix}/lib'
3381 mandir_default='${prefix}/share/man'
3382
3383 # toolchain
3384 ar_default="ar"
3385 cc_default="gcc"
3386 cxx_default="g++"
3387 host_cc_default="gcc"
3388 doxygen_default="doxygen"
3389 install="install"
3390 ln_s_default="ln -s -f"
3391 nm_default="nm -g"
3392 pkg_config_default=pkg-config
3393 ranlib_default="ranlib"
3394 strip_default="strip"
3395 version_script='--version-script'
3396 objformat="elf32"
3397 x86asmexe_default="nasm"
3398 windres_default="windres"
3399 nvcc_default="nvcc"
3400 nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
3401 striptype="direct"
3402
3403 # OS
3404 target_os_default=$(tolower $(uname -s))
3405 host_os=$target_os_default
3406
3407 # machine
3408 if test "$target_os_default" = aix; then
3409     arch_default=$(uname -p)
3410     strip_default="strip -X32_64"
3411 else
3412     arch_default=$(uname -m)
3413 fi
3414 cpu="generic"
3415 intrinsics="none"
3416
3417 # configurable options
3418 enable $PROGRAM_LIST
3419 enable $DOCUMENT_LIST
3420 enable $EXAMPLE_LIST
3421 enable $(filter_out avresample $LIBRARY_LIST)
3422 enable stripping
3423
3424 enable asm
3425 enable debug
3426 enable doc
3427 enable faan faandct faanidct
3428 enable optimizations
3429 enable runtime_cpudetect
3430 enable safe_bitstream_reader
3431 enable static
3432 enable swscale_alpha
3433 enable valgrind_backtrace
3434
3435 sws_max_filter_size_default=256
3436 set_default sws_max_filter_size
3437
3438 # internal components are enabled by default
3439 enable $EXTRALIBS_LIST
3440
3441 # Avoid external, non-system, libraries getting enabled by dependency resolution
3442 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3443
3444 # build settings
3445 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3446 LIBPREF="lib"
3447 LIBSUF=".a"
3448 FULLNAME='$(NAME)$(BUILDSUF)'
3449 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3450 SLIBPREF="lib"
3451 SLIBSUF=".so"
3452 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3453 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3454 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3455 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3456 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3457 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3458 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3459
3460 asflags_filter=echo
3461 cflags_filter=echo
3462 ldflags_filter=echo
3463
3464 AS_C='-c'
3465 AS_O='-o $@'
3466 CC_C='-c'
3467 CC_E='-E -o $@'
3468 CC_O='-o $@'
3469 CXX_C='-c'
3470 CXX_O='-o $@'
3471 OBJCC_C='-c'
3472 OBJCC_E='-E -o $@'
3473 OBJCC_O='-o $@'
3474 X86ASM_O='-o $@'
3475 LD_O='-o $@'
3476 LD_LIB='-l%'
3477 LD_PATH='-L'
3478 HOSTCC_C='-c'
3479 HOSTCC_E='-E -o $@'
3480 HOSTCC_O='-o $@'
3481 HOSTLD_O='-o $@'
3482 NVCC_C='-c'
3483 NVCC_O='-o $@'
3484
3485 host_extralibs='-lm'
3486 host_cflags_filter=echo
3487 host_ldflags_filter=echo
3488
3489 target_path='$(CURDIR)'
3490
3491 # since the object filename is not given with the -MM flag, the compiler
3492 # is only able to print the basename, and we must add the path ourselves
3493 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3494 DEPFLAGS='-MM'
3495
3496 mkdir -p ffbuild
3497
3498 # find source path
3499 if test -f configure; then
3500     source_path=.
3501 else
3502     source_path=$(cd $(dirname "$0"); pwd)
3503     case "$source_path" in
3504         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3505     esac
3506     test -e "$source_path/config.h" &&
3507         die "Out of tree builds are impossible with config.h in source dir."
3508 fi
3509
3510 for v in "$@"; do
3511     r=${v#*=}
3512     l=${v%"$r"}
3513     r=$(sh_quote "$r")
3514     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3515 done
3516
3517 find_things(){
3518     thing=$1
3519     pattern=$2
3520     file=$source_path/$3
3521     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3522 }
3523
3524 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3525 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3526 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3527 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3528 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3529 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3530 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3531 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3532
3533 find_things_extern(){
3534     thing=$1
3535     pattern=$2
3536     file=$source_path/$3
3537     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3538 }
3539
3540 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3541 HWACCEL_LIST=$(find_things_extern hwaccel AVHWAccel libavcodec/hwaccels.h)
3542 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3543
3544 AVCODEC_COMPONENTS_LIST="
3545     $BSF_LIST
3546     $DECODER_LIST
3547     $ENCODER_LIST
3548     $HWACCEL_LIST
3549     $PARSER_LIST
3550 "
3551
3552 AVDEVICE_COMPONENTS_LIST="
3553     $INDEV_LIST
3554     $OUTDEV_LIST
3555 "
3556
3557 AVFILTER_COMPONENTS_LIST="
3558     $FILTER_LIST
3559 "
3560
3561 AVFORMAT_COMPONENTS_LIST="
3562     $DEMUXER_LIST
3563     $MUXER_LIST
3564     $PROTOCOL_LIST
3565 "
3566
3567 ALL_COMPONENTS="
3568     $AVCODEC_COMPONENTS_LIST
3569     $AVDEVICE_COMPONENTS_LIST
3570     $AVFILTER_COMPONENTS_LIST
3571     $AVFORMAT_COMPONENTS_LIST
3572 "
3573
3574 for n in $COMPONENT_LIST; do
3575     v=$(toupper ${n%s})_LIST
3576     eval enable \$$v
3577     eval ${n}_if_any="\$$v"
3578 done
3579
3580 enable $ARCH_EXT_LIST
3581
3582 die_unknown(){
3583     echo "Unknown option \"$1\"."
3584     echo "See $0 --help for available options."
3585     exit 1
3586 }
3587
3588 print_in_columns() {
3589     cols=$(expr $ncols / 24)
3590     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3591 }
3592
3593 show_list() {
3594     suffix=_$1
3595     shift
3596     echo $* | sed s/$suffix//g | print_in_columns
3597     exit 0
3598 }
3599
3600 rand_list(){
3601     IFS=', '
3602     set -- $*
3603     unset IFS
3604     for thing; do
3605         comp=${thing%:*}
3606         prob=${thing#$comp}
3607         prob=${prob#:}
3608         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3609         echo "prob ${prob:-0.5}"
3610         printf '%s\n' $comp
3611     done
3612 }
3613
3614 do_random(){
3615     action=$1
3616     shift
3617     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3618     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3619 }
3620
3621 for opt do
3622     optval="${opt#*=}"
3623     case "$opt" in
3624         --extra-ldflags=*)
3625             add_ldflags $optval
3626         ;;
3627         --extra-ldexeflags=*)
3628             add_ldexeflags $optval
3629         ;;
3630         --extra-ldsoflags=*)
3631             add_ldsoflags $optval
3632         ;;
3633         --extra-ldlibflags=*)
3634             warn "The --extra-ldlibflags option is only provided for compatibility and will be\n"\
3635                  "removed in the future. Use --extra-ldsoflags instead."
3636             add_ldsoflags $optval
3637         ;;
3638         --extra-libs=*)
3639             add_extralibs $optval
3640         ;;
3641         --disable-devices)
3642             disable $INDEV_LIST $OUTDEV_LIST
3643         ;;
3644         --enable-debug=*)
3645             debuglevel="$optval"
3646         ;;
3647         --disable-programs)
3648             disable $PROGRAM_LIST
3649         ;;
3650         --disable-everything)
3651             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3652         ;;
3653         --disable-all)
3654             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3655             disable $LIBRARY_LIST $PROGRAM_LIST doc
3656             enable avutil
3657         ;;
3658         --enable-random|--disable-random)
3659             action=${opt%%-random}
3660             do_random ${action#--} $COMPONENT_LIST
3661         ;;
3662         --enable-random=*|--disable-random=*)
3663             action=${opt%%-random=*}
3664             do_random ${action#--} $optval
3665         ;;
3666         --enable-sdl)
3667             enable sdl2
3668         ;;
3669         --enable-*=*|--disable-*=*)
3670             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3671             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3672             eval list=\$$(toupper $thing)_LIST
3673             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3674             list=$(filter "$name" $list)
3675             [ "$list" = "" ] && warn "Option $opt did not match anything"
3676             $action $list
3677         ;;
3678         --enable-yasm|--disable-yasm)
3679             warn "The ${opt} option is only provided for compatibility and will be\n"\
3680                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3681             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3682         ;;
3683         --yasmexe=*)
3684             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3685                  "removed in the future. Use --x86asmexe instead."
3686             x86asmexe="$optval"
3687         ;;
3688         --enable-?*|--disable-?*)
3689             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3690             if is_in $option $COMPONENT_LIST; then
3691                 test $action = disable && action=unset
3692                 eval $action \$$(toupper ${option%s})_LIST
3693             elif is_in $option $CMDLINE_SELECT; then
3694                 $action $option
3695             else
3696                 die_unknown $opt
3697             fi
3698         ;;
3699         --list-*)
3700             NAME="${opt#--list-}"
3701             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3702             NAME=${NAME%s}
3703             eval show_list $NAME \$$(toupper $NAME)_LIST
3704         ;;
3705         --help|-h) show_help
3706         ;;
3707         --quiet|-q) quiet=yes
3708         ;;
3709         --fatal-warnings) enable fatal_warnings
3710         ;;
3711         --libfuzzer=*)
3712             libfuzzer_path="$optval"
3713         ;;
3714         *)
3715             optname="${opt%%=*}"
3716             optname="${optname#--}"
3717             optname=$(echo "$optname" | sed 's/-/_/g')
3718             if is_in $optname $CMDLINE_SET; then
3719                 eval $optname='$optval'
3720             elif is_in $optname $CMDLINE_APPEND; then
3721                 append $optname "$optval"
3722             else
3723                 die_unknown $opt
3724             fi
3725         ;;
3726     esac
3727 done
3728
3729 for e in $env; do
3730     eval "export $e"
3731 done
3732
3733 if disabled autodetect; then
3734
3735     # Unless iconv is explicitely disabled by the user, we still want to probe
3736     # for the iconv from the libc.
3737     disabled iconv || enable libc_iconv
3738
3739     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3740     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3741 fi
3742 # Mark specifically enabled, but normally autodetected libraries as requested.
3743 for lib in $AUTODETECT_LIBS; do
3744     enabled $lib && request $lib
3745 done
3746 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
3747 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3748 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3749
3750 disabled logging && logfile=/dev/null
3751
3752 # command line configuration sanity checks
3753
3754 # we need to build at least one lib type
3755 if ! enabled_any static shared; then
3756     cat <<EOF
3757 At least one library type must be built.
3758 Specify --enable-static to build the static libraries or --enable-shared to
3759 build the shared libraries as well. To only build the shared libraries specify
3760 --disable-static in addition to --enable-shared.
3761 EOF
3762     exit 1
3763 fi
3764
3765 die_license_disabled() {
3766     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3767 }
3768
3769 die_license_disabled_gpl() {
3770     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3771 }
3772
3773 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3774 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3775
3776 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3777 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3778
3779 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3780
3781 enabled_all gnutls openssl &&
3782     die "GnuTLS and OpenSSL must not be enabled at the same time."
3783
3784 # Disable all the library-specific components if the library itself
3785 # is disabled, see AVCODEC_LIST and following _LIST variables.
3786
3787 disable_components(){
3788     disabled ${1} && disable $(
3789         eval components="\$$(toupper ${1})_COMPONENTS"
3790         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3791     )
3792 }
3793
3794 map 'disable_components $v' $LIBRARY_LIST
3795
3796 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3797 set >> $logfile
3798
3799 test -n "$valgrind" && toolchain="valgrind-memcheck"
3800
3801 enabled ossfuzz && {
3802     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
3803     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
3804 }
3805
3806 case "$toolchain" in
3807     *-asan)
3808         cc_default="${toolchain%-asan}"
3809         add_cflags  -fsanitize=address
3810         add_ldflags -fsanitize=address
3811     ;;
3812     *-msan)
3813         cc_default="${toolchain%-msan}"
3814         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3815         add_ldflags -fsanitize=memory
3816     ;;
3817     *-tsan)
3818         cc_default="${toolchain%-tsan}"
3819         add_cflags  -fsanitize=thread -fPIE
3820         add_ldflags -fsanitize=thread -pie
3821         case "$toolchain" in
3822             gcc-tsan)
3823                 add_cflags  -fPIC
3824                 add_ldflags -fPIC
3825                 ;;
3826         esac
3827     ;;
3828     *-usan)
3829         cc_default="${toolchain%-usan}"
3830         add_cflags  -fsanitize=undefined
3831         add_ldflags -fsanitize=undefined
3832     ;;
3833     valgrind-*)
3834         target_exec_default="valgrind"
3835         case "$toolchain" in
3836             valgrind-massif)
3837                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3838                 ;;
3839             valgrind-memcheck)
3840                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3841                 ;;
3842         esac
3843     ;;
3844     msvc)
3845         # Check whether the current MSVC version needs the C99 converter.
3846         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3847         # support enough of C99 to build ffmpeg. Default to the new
3848         # behaviour if the regexp was unable to match anything, since this
3849         # successfully parses the version number of existing supported
3850         # versions that require the converter (MSVC 2010 and 2012).
3851         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3852         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3853             cc_default="cl"
3854             cxx_default="cl"
3855         else
3856             cc_default="c99wrap cl"
3857             cxx_default="c99wrap cl"
3858         fi
3859         ld_default="$source_path/compat/windows/mslink"
3860         nm_default="dumpbin -symbols"
3861         ar_default="lib"
3862         case "$arch" in
3863         aarch64|arm64)
3864             as_default="armasm64"
3865             ;;
3866         arm*)
3867             as_default="armasm"
3868             ;;
3869         esac
3870         target_os_default="win32"
3871         # Use a relative path for TMPDIR. This makes sure all the
3872         # ffconf temp files are written with a relative path, avoiding
3873         # issues with msys/win32 path conversion for MSVC parameters
3874         # such as -Fo<file> or -out:<file>.
3875         TMPDIR=.
3876     ;;
3877     icl)
3878         cc_default="icl"
3879         ld_default="xilink"
3880         nm_default="dumpbin -symbols"
3881         ar_default="xilib"
3882         target_os_default="win32"
3883         TMPDIR=.
3884     ;;
3885     gcov)
3886         add_cflags  -fprofile-arcs -ftest-coverage
3887         add_ldflags -fprofile-arcs -ftest-coverage
3888     ;;
3889     llvm-cov)
3890         add_cflags -fprofile-arcs -ftest-coverage
3891         add_ldflags --coverage
3892     ;;
3893     hardened)
3894         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3895         add_cflags   -fno-strict-overflow -fstack-protector-all
3896         add_ldflags  -Wl,-z,relro -Wl,-z,now
3897         add_cflags   -fPIE
3898         add_ldexeflags -fPIE -pie
3899     ;;
3900     ?*)
3901         die "Unknown toolchain $toolchain"
3902     ;;
3903 esac
3904
3905 if test -n "$cross_prefix"; then
3906     test -n "$arch" && test -n "$target_os" ||
3907         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3908     enable cross_compile
3909 fi
3910
3911 ar_default="${cross_prefix}${ar_default}"
3912 cc_default="${cross_prefix}${cc_default}"
3913 cxx_default="${cross_prefix}${cxx_default}"
3914 nm_default="${cross_prefix}${nm_default}"
3915 pkg_config_default="${cross_prefix}${pkg_config_default}"
3916 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3917     ranlib_default="${cross_prefix}${ranlib_default} -D"
3918 else
3919     ranlib_default="${cross_prefix}${ranlib_default}"
3920 fi
3921 strip_default="${cross_prefix}${strip_default}"
3922 windres_default="${cross_prefix}${windres_default}"
3923
3924 sysinclude_default="${sysroot}/usr/include"
3925
3926 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3927     target_exec target_os x86asmexe nvcc
3928 enabled cross_compile || host_cc_default=$cc
3929 set_default host_cc
3930
3931 pkg_config_fail_message=""
3932 if ! $pkg_config --version >/dev/null 2>&1; then
3933     warn "$pkg_config not found, library detection may fail."
3934     pkg_config=false
3935 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3936     pkg_config_fail_message="
3937 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3938 fi
3939
3940 if test $doxygen != $doxygen_default && \
3941   ! $doxygen --version >/dev/null 2>&1; then
3942     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3943 fi
3944
3945 exesuf() {
3946     case $1 in
3947         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3948     esac
3949 }
3950
3951 EXESUF=$(exesuf $target_os)
3952 HOSTEXESUF=$(exesuf $host_os)
3953
3954 # set temporary file name
3955 : ${TMPDIR:=$TEMPDIR}
3956 : ${TMPDIR:=$TMP}
3957 : ${TMPDIR:=/tmp}
3958
3959 if [ -n "$tempprefix" ] ; then
3960     mktemp(){
3961         tmpname="$tempprefix.${HOSTNAME}.${UID}"
3962         echo "$tmpname"
3963         mkdir "$tmpname"
3964     }
3965 elif ! check_cmd mktemp -u XXXXXX; then
3966     # simple replacement for missing mktemp
3967     # NOT SAFE FOR GENERAL USE
3968     mktemp(){
3969         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3970         echo "$tmpname"
3971         mkdir "$tmpname"
3972     }
3973 fi
3974
3975 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
3976     die "Unable to create temporary directory in $TMPDIR."
3977
3978 tmpfile(){
3979     tmp="${FFTMPDIR}/test"$2
3980     (set -C; exec > $tmp) 2> /dev/null ||
3981         die "Unable to create temporary file in $FFTMPDIR."
3982     eval $1=$tmp
3983 }
3984
3985 trap 'rm -rf -- "$FFTMPDIR"' EXIT
3986 trap 'exit 2' INT
3987
3988 tmpfile TMPASM .asm
3989 tmpfile TMPC   .c
3990 tmpfile TMPCPP .cpp
3991 tmpfile TMPE   $EXESUF
3992 tmpfile TMPH   .h
3993 tmpfile TMPM   .m
3994 tmpfile TMPO   .o
3995 tmpfile TMPS   .S
3996 tmpfile TMPSH  .sh
3997 tmpfile TMPV   .ver
3998
3999 unset -f mktemp
4000
4001 chmod +x $TMPE
4002
4003 # make sure we can execute files in $TMPDIR
4004 cat > $TMPSH 2>> $logfile <<EOF
4005 #! /bin/sh
4006 EOF
4007 chmod +x $TMPSH >> $logfile 2>&1
4008 if ! $TMPSH >> $logfile 2>&1; then
4009     cat <<EOF
4010 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
4011 variable to another directory and make sure that it is not mounted noexec.
4012 EOF
4013     die "Sanity test failed."
4014 fi
4015
4016 armasm_flags(){
4017     for flag; do
4018         case $flag in
4019             # Filter out MSVC cl.exe options from cflags that shouldn't
4020             # be passed to gas-preprocessor
4021             -M[TD]*)                                            ;;
4022             *)                  echo $flag                      ;;
4023         esac
4024    done
4025 }
4026
4027 cparser_flags(){
4028     for flag; do
4029         case $flag in
4030             -Wno-switch)             echo -Wno-switch-enum ;;
4031             -Wno-format-zero-length) ;;
4032             -Wdisabled-optimization) ;;
4033             -Wno-pointer-sign)       echo -Wno-other ;;
4034             *)                       echo $flag ;;
4035         esac
4036     done
4037 }
4038
4039 msvc_common_flags(){
4040     for flag; do
4041         case $flag in
4042             # In addition to specifying certain flags under the compiler
4043             # specific filters, they must be specified here as well or else the
4044             # generic catch all at the bottom will print the original flag.
4045             -Wall)                ;;
4046             -Wextra)              ;;
4047             -std=c99)             ;;
4048             # Common flags
4049             -fomit-frame-pointer) ;;
4050             -g)                   echo -Z7 ;;
4051             -fno-math-errno)      ;;
4052             -fno-common)          ;;
4053             -fno-signed-zeros)    ;;
4054             -fPIC)                ;;
4055             -mthumb)              ;;
4056             -march=*)             ;;
4057             -lz)                  echo zlib.lib ;;
4058             -lx264)               echo libx264.lib ;;
4059             -lstdc++)             ;;
4060             -l*)                  echo ${flag#-l}.lib ;;
4061             -LARGEADDRESSAWARE)   echo $flag ;;
4062             -L*)                  echo -libpath:${flag#-L} ;;
4063             *)                    echo $flag ;;
4064         esac
4065     done
4066 }
4067
4068 msvc_flags(){
4069     msvc_common_flags "$@"
4070     for flag; do
4071         case $flag in
4072             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4073                                        -wd4554 ;;
4074             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4075                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4076                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4077                                        -wd4307 \
4078                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4079         esac
4080     done
4081 }
4082
4083 icl_flags(){
4084     msvc_common_flags "$@"
4085     for flag; do
4086         case $flag in
4087             # Despite what Intel's documentation says -Wall, which is supported
4088             # on Windows, does enable remarks so disable them here.
4089             -Wall)                echo $flag -Qdiag-disable:remark ;;
4090             -std=c99)             echo -Qstd=c99 ;;
4091             -flto)                echo -ipo ;;
4092         esac
4093     done
4094 }
4095
4096 icc_flags(){
4097     for flag; do
4098         case $flag in
4099             -flto)                echo -ipo ;;
4100             *)                    echo $flag ;;
4101         esac
4102     done
4103 }
4104
4105 suncc_flags(){
4106     for flag; do
4107         case $flag in
4108             -march=*|-mcpu=*)
4109                 case "${flag#*=}" in
4110                     native)                   echo -xtarget=native       ;;
4111                     v9|niagara)               echo -xarch=sparc          ;;
4112                     ultrasparc)               echo -xarch=sparcvis       ;;
4113                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4114                     i586|pentium)             echo -xchip=pentium        ;;
4115                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4116                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4117                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4118                     pentium4*)          echo -xtarget=pentium4           ;;
4119                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4120                     *-sse3)             echo -xarch=sse3                 ;;
4121                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4122                     bonnell)                   echo -xarch=ssse3         ;;
4123                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4124                     westmere)                  echo -xtarget=westmere    ;;
4125                     silvermont)                echo -xarch=sse4_2        ;;
4126                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4127                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4128                                                echo -xarch=avx           ;;
4129                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4130                     btver1)                    echo -xarch=amdsse4a      ;;
4131                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4132                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4133                     k8|opteron|athlon64|athlon-fx)
4134                                                echo -xarch=sse2a         ;;
4135                     athlon*)                   echo -xarch=pentium_proa  ;;
4136                 esac
4137                 ;;
4138             -std=c99)             echo -xc99              ;;
4139             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4140             -fPIC)                echo -KPIC -xcode=pic32 ;;
4141             -W*,*)                echo $flag              ;;
4142             -f*-*|-W*|-mimpure-text)                      ;;
4143             -shared)              echo -G                 ;;
4144             *)                    echo $flag              ;;
4145         esac
4146     done
4147 }
4148
4149 probe_cc(){
4150     pfx=$1
4151     _cc=$2
4152     first=$3
4153
4154     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4155     unset _ld_o _ldflags _ld_lib _ld_path
4156     unset _depflags _DEPCMD _DEPFLAGS
4157     _flags_filter=echo
4158
4159     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4160         true # no-op to avoid reading stdin in following checks
4161     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4162         _type=llvm_gcc
4163         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4164         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4165         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4166         _cflags_speed='-O3'
4167         _cflags_size='-Os'
4168     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4169         _type=gcc
4170         gcc_version=$($_cc --version | head -n1)
4171         gcc_basever=$($_cc -dumpversion)
4172         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4173         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4174         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4175         case $gcc_basever in
4176             2) ;;
4177             2.*) ;;
4178             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4179         esac
4180         if [ "$first" = true ]; then
4181             case $gcc_basever in
4182                 4.2*)
4183                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4184             esac
4185         fi
4186         _cflags_speed='-O3'
4187         _cflags_size='-Os'
4188     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4189         _type=icc
4190         _ident=$($_cc --version | head -n1)
4191         _depflags='-MMD'
4192         _cflags_speed='-O3'
4193         _cflags_size='-Os'
4194         _cflags_noopt='-O1'
4195         _flags_filter=icc_flags
4196     elif $_cc -v 2>&1 | grep -q xlc; then
4197         _type=xlc
4198         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4199         _cflags_speed='-O5'
4200         _cflags_size='-O5 -qcompact'
4201     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4202         test -d "$sysroot" || die "No valid sysroot specified."
4203         _type=armcc
4204         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4205         armcc_conf="$PWD/armcc.conf"
4206         $_cc --arm_linux_configure                 \
4207              --arm_linux_config_file="$armcc_conf" \
4208              --configure_sysroot="$sysroot"        \
4209              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4210              die "Error creating armcc configuration file."
4211         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4212         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4213         as_default="${cross_prefix}gcc"
4214         _depflags='-MMD'
4215         _cflags_speed='-O3'
4216         _cflags_size='-Os'
4217     elif $_cc -v 2>&1 | grep -q clang; then
4218         _type=clang
4219         _ident=$($_cc --version 2>/dev/null | head -n1)
4220         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4221         _cflags_speed='-O3'
4222         _cflags_size='-Oz'
4223     elif $_cc -V 2>&1 | grep -q Sun; then
4224         _type=suncc
4225         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4226         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4227         _DEPFLAGS='-xM1 -xc99'
4228         _ldflags='-std=c99'
4229         _cflags_speed='-O5'
4230         _cflags_size='-O5 -xspace'
4231         _flags_filter=suncc_flags
4232     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4233         _type=pathscale
4234         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4235         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4236         _cflags_speed='-O2'
4237         _cflags_size='-Os'
4238         _flags_filter='filter_out -Wdisabled-optimization'
4239     elif $_cc -v 2>&1 | grep -q Open64; then
4240         _type=open64
4241         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4242         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4243         _cflags_speed='-O2'
4244         _cflags_size='-Os'
4245         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4246     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4247         _type=armasm
4248         _ident=$($_cc | head -n1)
4249         # 4509: "This form of conditional instruction is deprecated"
4250         _flags="-nologo -ignore 4509"
4251         _flags_filter=armasm_flags
4252     elif $_cc 2>&1 | grep -q Intel; then
4253         _type=icl
4254         _ident=$($_cc 2>&1 | head -n1)
4255         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4256         # Not only is O3 broken on 13.x+ but it is slower on all previous
4257         # versions (tested) as well.
4258         _cflags_speed="-O2"
4259         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4260         if $_cc 2>&1 | grep -q Linker; then
4261             _ld_o='-out:$@'
4262         else
4263             _ld_o='-Fe$@'
4264         fi
4265         _cc_o='-Fo$@'
4266         _cc_e='-P'
4267         _flags_filter=icl_flags
4268         _ld_lib='lib%.a'
4269         _ld_path='-libpath:'
4270         # -Qdiag-error to make icl error when seeing certain unknown arguments
4271         _flags='-nologo -Qdiag-error:4044,10157'
4272         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4273         # with MSVC which enables it by default.
4274         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4275         disable stripping
4276     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4277         # lld can emulate multiple different linkers; in ms link.exe mode,
4278         # the -? parameter gives the help output which contains an identifyable
4279         # string, while it gives an error in other modes.
4280         _type=lld-link
4281         # The link.exe mode doesn't have a switch for getting the version,
4282         # but we can force it back to gnu mode and get the version from there.
4283         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4284         _ld_o='-out:$@'
4285         _flags_filter=msvc_flags
4286         _ld_lib='lib%.a'
4287         _ld_path='-libpath:'
4288     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4289         _type=msvc
4290         _ident=$($_cc 2>&1 | head -n1)
4291         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4292         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4293         _cflags_speed="-O2"
4294         _cflags_size="-O1"
4295         _cflags_noopt="-O1"
4296         if $_cc -nologo- 2>&1 | grep -q Linker; then
4297             _ld_o='-out:$@'
4298         else
4299             _ld_o='-Fe$@'
4300         fi
4301         _cc_o='-Fo$@'
4302         _cc_e='-P -Fi$@'
4303         _flags_filter=msvc_flags
4304         _ld_lib='lib%.a'
4305         _ld_path='-libpath:'
4306         _flags='-nologo'
4307         disable stripping
4308     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4309         _type=cparser
4310         _ident=$($_cc --version | head -n1)
4311         _depflags='-MMD'
4312         _cflags_speed='-O4'
4313         _cflags_size='-O2'
4314         _flags_filter=cparser_flags
4315     fi
4316
4317     eval ${pfx}_type=\$_type
4318     eval ${pfx}_ident=\$_ident
4319 }
4320
4321 set_ccvars(){
4322     eval ${1}_C=\${_cc_c-\${${1}_C}}
4323     eval ${1}_E=\${_cc_e-\${${1}_E}}
4324     eval ${1}_O=\${_cc_o-\${${1}_O}}
4325
4326     if [ -n "$_depflags" ]; then
4327         eval ${1}_DEPFLAGS=\$_depflags
4328     else
4329         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4330         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4331         eval DEP${1}FLAGS=\$_flags
4332     fi
4333 }
4334
4335 probe_cc cc "$cc" "true"
4336 cflags_filter=$_flags_filter
4337 cflags_speed=$_cflags_speed
4338 cflags_size=$_cflags_size
4339 cflags_noopt=$_cflags_noopt
4340 add_cflags $_flags $_cflags
4341 cc_ldflags=$_ldflags
4342 set_ccvars CC
4343 set_ccvars CXX
4344
4345 probe_cc hostcc "$host_cc"
4346 host_cflags_filter=$_flags_filter
4347 host_cflags_speed=$_cflags_speed
4348 add_host_cflags  $_flags $_cflags
4349 set_ccvars HOSTCC
4350
4351 test -n "$cc_type" && enable $cc_type ||
4352     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4353
4354 : ${as_default:=$cc}
4355 : ${objcc_default:=$cc}
4356 : ${dep_cc_default:=$cc}
4357 : ${ld_default:=$cc}
4358 : ${host_ld_default:=$host_cc}
4359 set_default ar as objcc dep_cc ld ln_s host_ld windres
4360
4361 probe_cc as "$as"
4362 asflags_filter=$_flags_filter
4363 add_asflags $_flags $_cflags
4364 set_ccvars AS
4365
4366 probe_cc objcc "$objcc"
4367 objcflags_filter=$_flags_filter
4368 add_objcflags $_flags $_cflags
4369 set_ccvars OBJC
4370
4371 probe_cc ld "$ld"
4372 ldflags_filter=$_flags_filter
4373 add_ldflags $_flags $_ldflags
4374 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4375 LD_O=${_ld_o-$LD_O}
4376 LD_LIB=${_ld_lib-$LD_LIB}
4377 LD_PATH=${_ld_path-$LD_PATH}
4378
4379 probe_cc hostld "$host_ld"
4380 host_ldflags_filter=$_flags_filter
4381 add_host_ldflags $_flags $_ldflags
4382 HOSTLD_O=${_ld_o-$HOSTLD_O}
4383
4384 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4385     probe_cc depcc "$dep_cc"
4386     CCDEP=${_DEPCMD:-$DEPCMD}
4387     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4388     DEPCCFLAGS=$_flags
4389 fi
4390
4391 if $ar 2>&1 | grep -q Microsoft; then
4392     arflags="-nologo"
4393     ar_o='-out:$@'
4394 elif $ar 2>&1 | grep -q "\[D\] "; then
4395     arflags="rcD"
4396     ar_o='$@'
4397 else
4398     arflags="rc"
4399     ar_o='$@'
4400 fi
4401
4402 add_cflags $extra_cflags
4403 add_cxxflags $extra_cxxflags
4404 add_objcflags $extra_objcflags
4405 add_asflags $extra_cflags
4406
4407 if test -n "$sysroot"; then
4408     case "$cc_type" in
4409         gcc|llvm_gcc|clang)
4410             add_cppflags --sysroot="$sysroot"
4411             add_ldflags --sysroot="$sysroot"
4412         ;;
4413     esac
4414 fi
4415
4416 if test "$cpu" = host; then
4417     enabled cross_compile &&
4418         die "--cpu=host makes no sense when cross-compiling."
4419
4420     case "$cc_type" in
4421         gcc|llvm_gcc)
4422             check_native(){
4423                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4424                 sed -n "/cc1.*$1=/{
4425                             s/.*$1=\\([^ ]*\\).*/\\1/
4426                             p
4427                             q
4428                         }" $TMPE
4429             }
4430             cpu=$(check_native -march || check_native -mcpu)
4431         ;;
4432         clang)
4433             check_native(){
4434                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4435                 sed -n "/cc1.*-target-cpu /{
4436                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4437                             p
4438                             q
4439                         }" $TMPE
4440             }
4441             cpu=$(check_native -march)
4442         ;;
4443     esac
4444
4445     test "${cpu:-host}" = host &&
4446         die "--cpu=host not supported with compiler $cc"
4447 fi
4448
4449 # Deal with common $arch aliases
4450 case "$arch" in
4451     aarch64|arm64)
4452         arch="aarch64"
4453     ;;
4454     arm*|iPad*|iPhone*)
4455         arch="arm"
4456     ;;
4457     mips*|IP*)
4458         case "$arch" in
4459         *el)
4460             add_cppflags -EL
4461             add_ldflags -EL
4462         ;;
4463         *eb)
4464             add_cppflags -EB
4465             add_ldflags -EB
4466         ;;
4467         esac
4468         arch="mips"
4469     ;;
4470     parisc*|hppa*)
4471         arch="parisc"
4472     ;;
4473     "Power Macintosh"|ppc*|powerpc*)
4474         arch="ppc"
4475     ;;
4476     s390|s390x)
4477         arch="s390"
4478     ;;
4479     sh4|sh)
4480         arch="sh4"
4481     ;;
4482     sun4*|sparc*)
4483         arch="sparc"
4484     ;;
4485     tilegx|tile-gx)
4486         arch="tilegx"
4487     ;;
4488     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4489         arch="x86"
4490     ;;
4491 esac
4492
4493 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4494 enable $arch
4495
4496 # Add processor-specific flags
4497 if enabled aarch64; then
4498
4499     case $cpu in
4500         armv*)
4501             cpuflags="-march=$cpu"
4502         ;;
4503         *)
4504             cpuflags="-mcpu=$cpu"
4505         ;;
4506     esac
4507
4508 elif enabled alpha; then
4509
4510     cpuflags="-mcpu=$cpu"
4511
4512 elif enabled arm; then
4513
4514     check_arm_arch() {
4515         check_cpp_condition stddef.h \
4516             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4517             $cpuflags
4518     }
4519
4520     probe_arm_arch() {
4521         if   check_arm_arch 4;        then echo armv4
4522         elif check_arm_arch 4T;       then echo armv4t
4523         elif check_arm_arch 5;        then echo armv5
4524         elif check_arm_arch 5E;       then echo armv5e
4525         elif check_arm_arch 5T;       then echo armv5t
4526         elif check_arm_arch 5TE;      then echo armv5te
4527         elif check_arm_arch 5TEJ;     then echo armv5te
4528         elif check_arm_arch 6;        then echo armv6
4529         elif check_arm_arch 6J;       then echo armv6j
4530         elif check_arm_arch 6K;       then echo armv6k
4531         elif check_arm_arch 6Z;       then echo armv6z
4532         elif check_arm_arch 6KZ;      then echo armv6zk
4533         elif check_arm_arch 6ZK;      then echo armv6zk
4534         elif check_arm_arch 6T2;      then echo armv6t2
4535         elif check_arm_arch 7;        then echo armv7
4536         elif check_arm_arch 7A  7_A;  then echo armv7-a
4537         elif check_arm_arch 7S;       then echo armv7-a
4538         elif check_arm_arch 7R  7_R;  then echo armv7-r
4539         elif check_arm_arch 7M  7_M;  then echo armv7-m
4540         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4541         elif check_arm_arch 8A  8_A;  then echo armv8-a
4542         fi
4543     }
4544
4545     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4546
4547     case $cpu in
4548         armv*)
4549             cpuflags="-march=$cpu"
4550             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4551         ;;
4552         *)
4553             cpuflags="-mcpu=$cpu"
4554             case $cpu in
4555                 cortex-a*)                               subarch=armv7a  ;;
4556                 cortex-r*)                               subarch=armv7r  ;;
4557                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4558                 arm11*)                                  subarch=armv6   ;;
4559                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4560                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4561                 *)                             subarch=$(probe_arm_arch) ;;
4562             esac
4563         ;;
4564     esac
4565
4566     case "$subarch" in
4567         armv5t*)    enable fast_clz                ;;
4568         armv[6-8]*)
4569             enable fast_clz
4570             disabled fast_unaligned || enable fast_unaligned
4571             ;;
4572     esac
4573
4574 elif enabled avr32; then
4575
4576     case $cpu in
4577         ap7[02]0[0-2])
4578             subarch="avr32_ap"
4579             cpuflags="-mpart=$cpu"
4580         ;;
4581         ap)
4582             subarch="avr32_ap"
4583             cpuflags="-march=$cpu"
4584         ;;
4585         uc3[ab]*)
4586             subarch="avr32_uc"
4587             cpuflags="-mcpu=$cpu"
4588         ;;
4589         uc)
4590             subarch="avr32_uc"
4591             cpuflags="-march=$cpu"
4592         ;;
4593     esac
4594
4595 elif enabled bfin; then
4596
4597     cpuflags="-mcpu=$cpu"
4598
4599 elif enabled mips; then
4600
4601     cpuflags="-march=$cpu"
4602
4603     if [ "$cpu" != "generic" ]; then
4604         disable mips32r2
4605         disable mips32r5
4606         disable mips64r2
4607         disable mips32r6
4608         disable mips64r6
4609         disable loongson2
4610         disable loongson3
4611
4612         case $cpu in
4613             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4614                 enable mips32r2
4615                 disable msa
4616             ;;
4617             p5600|i6400|p6600)
4618                 disable mipsdsp
4619                 disable mipsdspr2
4620             ;;
4621             loongson*)
4622                 enable loongson2
4623                 enable loongson3
4624                 enable local_aligned
4625                 enable simd_align_16
4626                 enable fast_64bit
4627                 enable fast_clz
4628                 enable fast_cmov
4629                 enable fast_unaligned
4630                 disable aligned_stack
4631                 disable mipsfpu
4632                 disable mipsdsp
4633                 disable mipsdspr2
4634                 case $cpu in
4635                     loongson3*)
4636                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4637                     ;;
4638                     loongson2e)
4639                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4640                     ;;
4641                     loongson2f)
4642                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4643                     ;;
4644                 esac
4645             ;;
4646             *)
4647                 # Unknown CPU. Disable everything.
4648                 warn "unknown CPU. Disabling all MIPS optimizations."
4649                 disable mipsfpu
4650                 disable mipsdsp
4651                 disable mipsdspr2
4652                 disable msa
4653                 disable mmi
4654             ;;
4655         esac
4656
4657         case $cpu in
4658             24kc)
4659                 disable mipsfpu
4660                 disable mipsdsp
4661                 disable mipsdspr2
4662             ;;
4663             24kf*)
4664                 disable mipsdsp
4665                 disable mipsdspr2
4666             ;;
4667             24kec|34kc|1004kc)
4668                 disable mipsfpu
4669                 disable mipsdspr2
4670             ;;
4671             24kef*|34kf*|1004kf*)
4672                 disable mipsdspr2
4673             ;;
4674             74kc)
4675                 disable mipsfpu
4676             ;;
4677             p5600)
4678                 enable mips32r5
4679                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4680             ;;
4681             i6400)
4682                 enable mips64r6
4683                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4684             ;;
4685             p6600)
4686                 enable mips64r6
4687                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4688             ;;
4689         esac
4690     else
4691         # We do not disable anything. Is up to the user to disable the unwanted features.
4692         warn 'generic cpu selected'
4693     fi
4694
4695 elif enabled ppc; then
4696
4697     disable ldbrx
4698
4699     case $(tolower $cpu) in
4700         601|ppc601|powerpc601)
4701             cpuflags="-mcpu=601"
4702             disable altivec
4703         ;;
4704         603*|ppc603*|powerpc603*)
4705             cpuflags="-mcpu=603"
4706             disable altivec
4707         ;;
4708         604*|ppc604*|powerpc604*)
4709             cpuflags="-mcpu=604"
4710             disable altivec
4711         ;;
4712         g3|75*|ppc75*|powerpc75*)
4713             cpuflags="-mcpu=750"
4714             disable altivec
4715         ;;
4716         g4|745*|ppc745*|powerpc745*)
4717             cpuflags="-mcpu=7450"
4718             disable vsx
4719         ;;
4720         74*|ppc74*|powerpc74*)
4721             cpuflags="-mcpu=7400"
4722             disable vsx
4723         ;;
4724         g5|970|ppc970|powerpc970)
4725             cpuflags="-mcpu=970"
4726             disable vsx
4727         ;;
4728         power[3-6]*)
4729             cpuflags="-mcpu=$cpu"
4730             disable vsx
4731         ;;
4732         power[7-8]*)
4733             cpuflags="-mcpu=$cpu"
4734         ;;
4735         cell)
4736             cpuflags="-mcpu=cell"
4737             enable ldbrx
4738             disable vsx
4739         ;;
4740         e500mc)
4741             cpuflags="-mcpu=e500mc"
4742             disable altivec
4743         ;;
4744         e500v2)
4745             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4746             disable altivec
4747             disable dcbzl
4748         ;;
4749         e500)
4750             cpuflags="-mcpu=8540 -mhard-float"
4751             disable altivec
4752             disable dcbzl
4753         ;;
4754     esac
4755
4756 elif enabled sparc; then
4757
4758     case $cpu in
4759         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4760             cpuflags="-mcpu=$cpu"
4761         ;;
4762         ultrasparc*|niagara[234])
4763             cpuflags="-mcpu=$cpu"
4764         ;;
4765     esac
4766
4767 elif enabled x86; then
4768
4769     case $cpu in
4770         i[345]86|pentium)
4771             cpuflags="-march=$cpu"
4772             disable i686
4773             disable mmx
4774         ;;
4775         # targets that do NOT support nopl and conditional mov (cmov)
4776         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4777             cpuflags="-march=$cpu"
4778             disable i686
4779         ;;
4780         # targets that do support nopl and conditional mov (cmov)
4781         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4782         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4783         |amdfam10|barcelona|b[dt]ver*|znver*)
4784             cpuflags="-march=$cpu"
4785             enable i686
4786             enable fast_cmov
4787         ;;
4788         # targets that do support conditional mov but on which it's slow
4789         pentium4|pentium4m|prescott|nocona)
4790             cpuflags="-march=$cpu"
4791             enable i686
4792             disable fast_cmov
4793         ;;
4794     esac
4795
4796 fi
4797
4798 if [ "$cpu" != generic ]; then
4799     add_cflags  $cpuflags
4800     add_asflags $cpuflags
4801     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4802 fi
4803
4804 # compiler sanity check
4805 check_exec <<EOF
4806 int main(void){ return 0; }
4807 EOF
4808 if test "$?" != 0; then
4809     echo "$cc is unable to create an executable file."
4810     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4811         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4812         echo "Only do this if you know what cross compiling means."
4813     fi
4814     die "C compiler test failed."
4815 fi
4816
4817 add_cppflags -D_ISOC99_SOURCE
4818 add_cxxflags -D__STDC_CONSTANT_MACROS
4819 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
4820
4821 # some compilers silently accept -std=c11, so we also need to check that the
4822 # version macro is defined properly
4823 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
4824     add_cflags -std=c11 ||
4825     check_cflags -std=c99
4826
4827 check_cppflags -D_FILE_OFFSET_BITS=64
4828 check_cppflags -D_LARGEFILE_SOURCE
4829
4830 add_host_cppflags -D_ISOC99_SOURCE
4831 check_host_cflags -std=c99
4832 check_host_cflags -Wall
4833 check_host_cflags $host_cflags_speed
4834
4835 check_64bit(){
4836     arch32=$1
4837     arch64=$2
4838     expr=$3
4839     check_code cc "" "int test[2*($expr) - 1]" &&
4840         subarch=$arch64 || subarch=$arch32
4841     enable $subarch
4842 }
4843
4844 case "$arch" in
4845     aarch64|alpha|ia64)
4846         enabled shared && enable_weak pic
4847     ;;
4848     mips)
4849         check_64bit mips mips64 '_MIPS_SIM > 1'
4850         enabled shared && enable_weak pic
4851     ;;
4852     parisc)
4853         check_64bit parisc parisc64 'sizeof(void *) > 4'
4854         enabled shared && enable_weak pic
4855     ;;
4856     ppc)
4857         check_64bit ppc ppc64 'sizeof(void *) > 4'
4858         enabled shared && enable_weak pic
4859     ;;
4860     s390)
4861         check_64bit s390 s390x 'sizeof(void *) > 4'
4862         enabled shared && enable_weak pic
4863     ;;
4864     sparc)
4865         check_64bit sparc sparc64 'sizeof(void *) > 4'
4866         enabled shared && enable_weak pic
4867     ;;
4868     x86)
4869         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4870         # Treat x32 as x64 for now. Note it also needs pic if shared
4871         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4872             subarch=x86_64 && enable x86_64 && disable x86_32
4873         if enabled x86_64; then
4874             enabled shared && enable_weak pic
4875             objformat=elf64
4876         fi
4877     ;;
4878 esac
4879
4880 # OS specific
4881 case $target_os in
4882     aix)
4883         SHFLAGS=-shared
4884         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4885         enabled shared && add_ldflags -Wl,-brtl
4886         arflags='-Xany -r -c'
4887         ;;
4888     android)
4889         disable symver
4890         enable section_data_rel_ro
4891         SLIB_INSTALL_NAME='$(SLIBNAME)'
4892         SLIB_INSTALL_LINKS=
4893         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4894         ;;
4895     haiku)
4896         prefix_default="/boot/common"
4897         network_extralibs="-lnetwork"
4898         host_extralibs=
4899         ;;
4900     sunos)
4901         SHFLAGS='-shared -Wl,-h,$$(@F)'
4902         enabled x86 && append SHFLAGS -mimpure-text
4903         network_extralibs="-lsocket -lnsl"
4904         add_cppflags -D__EXTENSIONS__
4905         # When using suncc to build, the Solaris linker will mark
4906         # an executable with each instruction set encountered by
4907         # the Solaris assembler.  As our libraries contain their own
4908         # guards for processor-specific code, instead suppress
4909         # generation of the HWCAPS ELF section on Solaris x86 only.
4910         enabled_all suncc x86 &&
4911             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4912             add_ldflags -Wl,-M,mapfile
4913         nm_default='nm -P -g'
4914         version_script='-M'
4915         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
4916         ;;
4917     netbsd)
4918         disable symver
4919         oss_indev_extralibs="-lossaudio"
4920         oss_outdev_extralibs="-lossaudio"
4921         enabled gcc || check_ldflags -Wl,-zmuldefs
4922         ;;
4923     openbsd|bitrig)
4924         disable symver
4925         SHFLAGS='-shared'
4926         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4927         SLIB_INSTALL_LINKS=
4928         oss_indev_extralibs="-lossaudio"
4929         oss_outdev_extralibs="-lossaudio"
4930         ;;
4931     dragonfly)
4932         disable symver
4933         ;;
4934     freebsd)
4935         ;;
4936     bsd/os)
4937         add_extralibs -lpoll -lgnugetopt
4938         strip="strip -d"
4939         ;;
4940     darwin)
4941         enabled ppc && add_asflags -force_cpusubtype_ALL
4942         install_name_dir_default='$(SHLIBDIR)'
4943         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4944         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4945         strip="${strip} -x"
4946         add_ldflags -Wl,-dynamic,-search_paths_first
4947         check_cflags -Werror=partial-availability
4948         SLIBSUF=".dylib"
4949         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4950         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4951         enabled x86_64 && objformat="macho64" || objformat="macho32"
4952         enabled_any pic shared x86_64 ||
4953             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4954         check_header dispatch/dispatch.h &&
4955             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
4956         if test -n "$sysroot"; then
4957             is_in -isysroot $cc $CPPFLAGS $CFLAGS || check_cppflags -isysroot $sysroot
4958             is_in -isysroot $ld $LDFLAGS          || check_ldflags  -isysroot $sysroot
4959         fi
4960         version_script='-exported_symbols_list'
4961         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
4962         ;;
4963     msys*)
4964         die "Native MSYS builds are discouraged, please use the MINGW environment."
4965         ;;
4966     mingw32*|mingw64*)
4967         target_os=mingw32
4968         if enabled shared; then
4969             # Cannot build both shared and static libs when using dllimport.
4970             disable static
4971         fi
4972         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4973         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4974         shlibdir_default="$bindir_default"
4975         SLIBPREF=""
4976         SLIBSUF=".dll"
4977         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4978         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4979         SLIB_EXTRA_CMD='cp $(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4980         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4981         SLIB_INSTALL_LINKS=
4982         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4983         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4984         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" AR="$(AR_CMD)" NM="$(NM_CMD)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4985         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--disable-auto-image-base $$(@:$(SLIBSUF)=.def)'
4986         enabled x86_64 && objformat="win64" || objformat="win32"
4987         ranlib=:
4988         enable dos_paths
4989         check_ldflags -Wl,--nxcompat,--dynamicbase
4990         # Lets work around some stupidity in binutils.
4991         # ld will strip relocations from executables even though we need them
4992         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
4993         # however ld then forgets what the entry point should be (oops) so we
4994         # have to manually (re)set it.
4995         if enabled x86_32; then
4996             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
4997         elif enabled x86_64; then
4998             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
4999             check_ldflags -Wl,--high-entropy-va # binutils 2.25
5000             # Set image base >4GB for extra entropy with HEASLR
5001             add_ldexeflags -Wl,--image-base,0x140000000
5002             append SHFLAGS -Wl,--image-base,0x180000000
5003         fi
5004         ;;
5005     win32|win64)
5006         disable symver
5007         if enabled shared; then
5008             # Link to the import library instead of the normal static library
5009             # for shared libs.
5010             LD_LIB='%.lib'
5011             # Cannot build both shared and static libs with MSVC or icl.
5012             disable static
5013         fi
5014         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
5015         shlibdir_default="$bindir_default"
5016         SLIBPREF=""
5017         SLIBSUF=".dll"
5018         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5019         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5020         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5021         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5022         SLIB_INSTALL_LINKS=
5023         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5024         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5025         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5026         enabled x86_64 && objformat="win64" || objformat="win32"
5027         ranlib=:
5028         enable dos_paths
5029         ;;
5030     cygwin*)
5031         target_os=cygwin
5032         shlibdir_default="$bindir_default"
5033         SLIBPREF="cyg"
5034         SLIBSUF=".dll"
5035         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5036         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5037         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5038         SLIB_INSTALL_LINKS=
5039         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
5040         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
5041         enabled x86_64 && objformat="win64" || objformat="win32"
5042         enable dos_paths
5043         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
5044         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5045         ;;
5046     *-dos|freedos|opendos)
5047         network_extralibs="-lsocket"
5048         objformat="coff"
5049         enable dos_paths
5050         add_cppflags -U__STRICT_ANSI__
5051         ;;
5052     linux)
5053         enable section_data_rel_ro
5054         enabled_any arm aarch64 && enable_weak linux_perf
5055         ;;
5056     irix*)
5057         target_os=irix
5058         ranlib="echo ignoring ranlib"
5059         ;;
5060     os/2*)
5061         strip="lxlite -CS"
5062         striptype=""
5063         objformat="aout"
5064         add_cppflags -D_GNU_SOURCE
5065         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
5066         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
5067         LIBSUF="_s.a"
5068         SLIBPREF=""
5069         SLIBSUF=".dll"
5070         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5071         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
5072         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
5073             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
5074             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
5075             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
5076             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
5077         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
5078             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
5079         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5080         SLIB_INSTALL_LINKS=
5081         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
5082         enable dos_paths
5083         enable_weak os2threads
5084         ;;
5085     gnu/kfreebsd)
5086         add_cppflags -D_BSD_SOURCE
5087         ;;
5088     gnu)
5089         ;;
5090     qnx)
5091         add_cppflags -D_QNX_SOURCE
5092         network_extralibs="-lsocket"
5093         ;;
5094     symbian)
5095         SLIBSUF=".dll"
5096         enable dos_paths
5097         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
5098         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
5099         add_ldflags -Wl,--target1-abs,--no-undefined \
5100                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
5101                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
5102         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
5103                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
5104                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
5105         ;;
5106     minix)
5107         ;;
5108     none)
5109         ;;
5110     *)
5111         die "Unknown OS '$target_os'."
5112         ;;
5113 esac
5114
5115 # test if creating links works
5116 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5117 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5118 mkdir "$link_dest"
5119 $ln_s "$link_dest" "$link_name"
5120 touch "$link_dest/test_file"
5121 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5122     # create link to source path
5123     [ -e src ] && rm src
5124     $ln_s "$source_path" src
5125     source_link=src
5126 else
5127     # creating directory links doesn't work
5128     # fall back to using the full source path
5129     source_link="$source_path"
5130 fi
5131 # cleanup
5132 rm -r "$link_dest"
5133 rm -r "$link_name"
5134
5135 # determine libc flavour
5136
5137 probe_libc(){
5138     pfx=$1
5139     pfx_no_=${pfx%_}
5140     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5141     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5142         eval ${pfx}libc_type=uclibc
5143         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5144     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5145         eval ${pfx}libc_type=glibc
5146         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5147     # MinGW headers can be installed on Cygwin, so check for newlib first.
5148     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5149         eval ${pfx}libc_type=newlib
5150         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
5151     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5152     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5153         eval ${pfx}libc_type=mingw64
5154         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5155             add_compat msvcrt/snprintf.o
5156             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5157         fi
5158         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5159         eval test \$${pfx_no_}cc_type = "gcc" &&
5160             add_${pfx}cppflags -D__printf__=__gnu_printf__
5161         check_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5162             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5163     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5164          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5165         eval ${pfx}libc_type=mingw32
5166         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5167             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5168             die "ERROR: MinGW32 runtime version must be >= 3.15."
5169         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5170         check_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
5171             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5172         check_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5173             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5174         eval test \$${pfx_no_}cc_type = "gcc" &&
5175             add_${pfx}cppflags -D__printf__=__gnu_printf__
5176     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5177         eval ${pfx}libc_type=msvcrt
5178         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5179             if [ "$pfx" = host_ ]; then
5180                 add_host_cppflags -Dsnprintf=_snprintf
5181             else
5182                 add_compat strtod.o strtod=avpriv_strtod
5183                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5184                                              _snprintf=avpriv_snprintf  \
5185                                              vsnprintf=avpriv_vsnprintf
5186             fi
5187         fi
5188         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5189         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5190         # 0x601 by default unless something else is set by the user.
5191         # This can easily lead to us detecting functions only present
5192         # in such new versions and producing binaries requiring windows 7.0.
5193         # Therefore explicitly set the default to Vista unless the user has
5194         # set something else on the command line.
5195         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5196         # family. For these cases, configure is free to use any functions
5197         # found in the SDK headers by default. (Alternatively, we could force
5198         # _WIN32_WINNT to 0x0602 in that case.)
5199         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5200             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0600; }
5201 #ifdef WINAPI_FAMILY
5202 #include <winapifamily.h>
5203 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5204 #error not desktop
5205 #endif
5206 #endif
5207 EOF
5208         if [ "$pfx" = "" ]; then
5209             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5210             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5211         fi
5212     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5213         eval ${pfx}libc_type=klibc
5214     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5215         eval ${pfx}libc_type=bionic
5216     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5217         eval ${pfx}libc_type=solaris
5218         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5219     fi
5220     check_${pfx}cc <<EOF
5221 #include <time.h>
5222 void *v = localtime_r;
5223 EOF
5224 test "$?" != 0 && check_${pfx}cc -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 <<EOF && add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5225 #include <time.h>
5226 void *v = localtime_r;
5227 EOF
5228
5229     eval test -n "\${${pfx}libc_type}" && enable ${pfx}libc_${libc_type}
5230 }
5231
5232 probe_libc
5233 probe_libc host_
5234
5235 # hacks for compiler/libc/os combinations
5236
5237 case $libc_type in
5238     bionic)
5239         add_compat strtod.o strtod=avpriv_strtod
5240         ;;
5241 esac
5242
5243 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5244     add_cppflags '-I\$(SRC_PATH)/compat/float'
5245
5246 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5247
5248 set_default libdir
5249 : ${shlibdir_default:="$libdir"}
5250 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5251
5252 set_default $PATHS_LIST
5253 set_default nm
5254
5255 disabled optimizations || enabled ossfuzz || check_cflags -fomit-frame-pointer
5256
5257 enable_weak_pic() {
5258     disabled pic && return
5259     enable pic
5260     add_cppflags -DPIC
5261     case "$target_os" in
5262     mingw*|cygwin*|win*)
5263         ;;
5264     *)
5265         add_cflags -fPIC
5266         add_asflags -fPIC
5267         ;;
5268     esac
5269 }
5270
5271 enabled pic && enable_weak_pic
5272
5273 check_cc <<EOF || die "Symbol mangling check failed."
5274 int ff_extern;
5275 EOF
5276 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5277 extern_prefix=${sym%%ff_extern*}
5278
5279 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
5280
5281 _restrict=
5282 for restrict_keyword in restrict __restrict__ __restrict; do
5283     check_cc <<EOF && _restrict=$restrict_keyword && break
5284 void foo(char * $restrict_keyword p);
5285 EOF
5286 done
5287
5288 check_cc <<EOF && enable pragma_deprecated
5289 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
5290 EOF
5291
5292 check_cc <<EOF || die "endian test failed"
5293 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5294 EOF
5295 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5296
5297 check_cc <<EOF && enable const_nan
5298 #include <math.h>
5299 void foo(void) { struct { double d; } static const bar[] = { { NAN } }; }
5300 EOF
5301
5302 if ! enabled ppc64 || enabled bigendian; then
5303     disable vsx
5304 fi
5305
5306 check_gas() {
5307     log "check_gas using '$as' as AS"
5308     # :vararg is used on aarch64, arm and ppc altivec
5309     check_as <<EOF || return 1
5310 .macro m n, y:vararg=0
5311 \n: .int \y
5312 .endm
5313 m x
5314 EOF
5315     # .altmacro is only used in arm asm
5316     ! enabled arm || check_as <<EOF || return 1
5317 .altmacro
5318 EOF
5319     enable gnu_as
5320     return 0
5321 }
5322
5323 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5324     nogas=:
5325     enabled_any arm aarch64 && nogas=die
5326     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5327     as_noop=-v
5328
5329     case $as_type in
5330         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5331         gcc)  gaspp_as_type=gas ;;
5332         *)    gaspp_as_type=$as_type ;;
5333     esac
5334
5335     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5336
5337     test "${as#*gas-preprocessor.pl}" != "$as" ||
5338     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5339         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5340
5341     if ! check_gas ; then
5342         as=${gas:=$as}
5343         check_gas || \
5344             $nogas "GNU assembler not found, install/update gas-preprocessor"
5345     fi
5346
5347     check_as <<EOF && enable as_func
5348 .func test
5349 .endfunc
5350 EOF
5351 fi
5352
5353 check_inline_asm inline_asm_labels '"1:\n"'
5354
5355 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5356
5357 if enabled aarch64; then
5358     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5359     # internal assembler in clang 3.3 does not support this instruction
5360     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5361     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5362
5363     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5364
5365 elif enabled alpha; then
5366
5367     check_cflags -mieee
5368
5369 elif enabled arm; then
5370
5371     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
5372
5373     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
5374 float func(float a, float b){ return a+b; }
5375 EOF
5376
5377     enabled thumb && check_cflags -mthumb || check_cflags -marm
5378
5379     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
5380         enable vfp_args
5381     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5382         enable vfp_args
5383     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5384         case "${cross_prefix:-$cc}" in
5385             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
5386             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
5387 __asm__ (".eabi_attribute 28, 1");
5388 int main(void) { return 0; }
5389 EOF
5390         esac
5391         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5392     fi
5393
5394     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5395     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5396     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5397     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5398     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5399     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5400     enabled setend  && check_insn setend  'setend be'
5401
5402     [ $target_os = linux ] || [ $target_os = android ] ||
5403         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5404             $ARCH_EXT_LIST_ARM
5405
5406     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5407
5408     check_as <<EOF && enable as_arch_directive
5409 .arch armv7-a
5410 EOF
5411     check_as <<EOF && enable as_fpu_directive
5412 .fpu neon
5413 EOF
5414
5415     # llvm's integrated assembler supports .object_arch from llvm 3.5
5416     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
5417         check_as <<EOF && enable as_object_arch
5418 .object_arch armv4
5419 EOF
5420
5421     # MS armasm fails to assemble our PIC constructs
5422     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5423
5424 elif enabled mips; then
5425
5426     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5427     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5428     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5429
5430     # Enable minimum ISA based on selected options
5431     if enabled mips64; then
5432         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5433         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5434         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5435     else
5436         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5437         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5438         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5439         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5440     fi
5441
5442     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5443     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5444     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_header msa.h || disable msa
5445     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5446     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5447
5448     if enabled bigendian && enabled msa; then
5449         disable msa
5450     fi
5451
5452 elif enabled parisc; then
5453
5454     if enabled gcc; then
5455         case $($cc -dumpversion) in
5456             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5457         esac
5458     fi
5459
5460 elif enabled ppc; then
5461
5462     enable local_aligned
5463
5464     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5465     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5466     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5467     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5468
5469     if enabled altivec; then
5470         check_cflags -maltivec -mabi=altivec
5471
5472         # check if our compiler supports Motorola AltiVec C API
5473         check_code cc altivec.h "vector signed int v1 = (vector signed int) { 0 };
5474                                  vector signed int v2 = (vector signed int) { 1 };
5475                                  v1 = vec_add(v1, v2);" ||
5476             disable altivec
5477
5478         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5479     fi
5480
5481     if enabled vsx; then
5482         check_cflags -mvsx &&
5483         check_code cc altivec.h "int v[4] = { 0 };
5484                                  vector signed int v1 = vec_vsx_ld(0, v);" ||
5485             disable vsx
5486     fi
5487
5488     if enabled power8; then
5489         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
5490     fi
5491
5492 elif enabled x86; then
5493
5494     check_builtin rdtsc    intrin.h   "__rdtsc()"
5495     check_builtin mm_empty mmintrin.h "_mm_empty()"
5496
5497     enable local_aligned
5498
5499     # check whether EBP is available on x86
5500     # As 'i' is stored on the stack, this program will crash
5501     # if the base pointer is used to access it because the
5502     # base pointer is cleared in the inline assembly code.
5503     check_exec_crash <<EOF && enable ebp_available
5504 volatile int i=0;
5505 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5506 return i;
5507 EOF
5508
5509     # check whether EBX is available on x86
5510     check_inline_asm ebx_available '""::"b"(0)' &&
5511         check_inline_asm ebx_available '"":::"%ebx"'
5512
5513     # check whether xmm clobbers are supported
5514     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5515
5516     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5517         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5518
5519     # check whether binutils is new enough to compile SSSE3/MMXEXT
5520     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5521     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5522
5523     probe_x86asm(){
5524         x86asmexe_probe=$1
5525         if check_cmd $x86asmexe_probe -v; then
5526             x86asmexe=$x86asmexe_probe
5527             x86asm_type=nasm
5528             x86asm_debug="-g -F dwarf"
5529             X86ASMDEP=
5530             X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
5531         elif check_cmd $x86asmexe_probe --version; then
5532             x86asmexe=$x86asmexe_probe
5533             x86asm_type=yasm
5534             x86asm_debug="-g dwarf2"
5535             X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
5536             X86ASM_DEPFLAGS=
5537         fi
5538         check_x86asm "movbe ecx, [5]" && enable x86asm
5539     }
5540
5541     if ! disabled_any asm mmx x86asm; then
5542         disable x86asm
5543         for program in $x86asmexe nasm yasm; do
5544             probe_x86asm $program && break
5545         done
5546         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
5547         X86ASMFLAGS="-f $objformat"
5548         enabled pic               && append X86ASMFLAGS "-DPIC"
5549         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
5550         case "$objformat" in
5551             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
5552         esac
5553
5554         check_x86asm "vmovdqa32 [eax]{k1}{z}, zmm0"    || disable avx512_external
5555         check_x86asm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
5556         check_x86asm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
5557         check_x86asm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
5558         check_x86asm "CPU amdnop" || disable cpunop
5559     fi
5560
5561     case "$cpu" in
5562         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5563             disable fast_clz
5564         ;;
5565     esac
5566
5567 fi
5568
5569 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
5570
5571 check_ldflags -Wl,--as-needed
5572 check_ldflags -Wl,-z,noexecstack
5573
5574 if ! disabled network; then
5575     check_func getaddrinfo $network_extralibs
5576     check_func inet_aton $network_extralibs
5577
5578     check_type netdb.h "struct addrinfo"
5579     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5580     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5581     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5582     check_type poll.h "struct pollfd"
5583     check_type netinet/sctp.h "struct sctp_event_subscribe"
5584     check_struct "sys/socket.h" "struct msghdr" msg_flags
5585     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5586     check_type netinet/in.h "struct sockaddr_in6"
5587     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5588     check_type "sys/types.h sys/socket.h" socklen_t
5589
5590     # Prefer arpa/inet.h over winsock2
5591     if check_header arpa/inet.h ; then
5592         check_func closesocket
5593     elif check_header winsock2.h ; then
5594         check_func_headers winsock2.h closesocket -lws2 &&
5595             network_extralibs="-lws2" ||
5596         { check_func_headers winsock2.h closesocket -lws2_32 &&
5597             network_extralibs="-lws2_32"; } || disable winsock2_h network
5598         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5599
5600         check_type ws2tcpip.h socklen_t
5601         check_type ws2tcpip.h "struct addrinfo"
5602         check_type ws2tcpip.h "struct group_source_req"
5603         check_type ws2tcpip.h "struct ip_mreq_source"
5604         check_type ws2tcpip.h "struct ipv6_mreq"
5605         check_type winsock2.h "struct pollfd"
5606         check_struct winsock2.h "struct sockaddr" sa_len
5607         check_type ws2tcpip.h "struct sockaddr_in6"
5608         check_type ws2tcpip.h "struct sockaddr_storage"
5609     else
5610         disable network
5611     fi
5612 fi
5613
5614 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5615 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5616 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5617 check_builtin sarestart signal.h "SA_RESTART"
5618 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5619 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5620 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5621 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5622
5623 case "$custom_allocator" in
5624     jemalloc)
5625         # jemalloc by default does not use a prefix
5626         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5627     ;;
5628     tcmalloc)
5629         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
5630         malloc_prefix=tc_
5631     ;;
5632 esac
5633
5634 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5635 check_func  ${malloc_prefix}memalign            && enable memalign
5636 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5637
5638 check_func  access
5639 check_func_headers stdlib.h arc4random
5640 check_lib   clock_gettime time.h clock_gettime || check_lib clock_gettime time.h clock_gettime -lrt
5641 check_func  fcntl
5642 check_func  fork
5643 check_func  gethrtime
5644 check_func  getopt
5645 check_func  getrusage
5646 check_func  gettimeofday
5647 check_func  isatty
5648 check_func  mkstemp
5649 check_func  mmap
5650 check_func  mprotect
5651 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5652 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
5653 check_func  sched_getaffinity
5654 check_func  setrlimit
5655 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5656 check_func  strerror_r
5657 check_func  sysconf
5658 check_func  sysctl
5659 check_func  usleep
5660
5661 check_func_headers conio.h kbhit
5662 check_func_headers io.h setmode
5663 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5664 check_func_headers mach/mach_time.h mach_absolute_time
5665 check_func_headers stdlib.h getenv
5666 check_func_headers sys/stat.h lstat
5667
5668 check_func_headers windows.h GetProcessAffinityMask
5669 check_func_headers windows.h GetProcessTimes
5670 check_func_headers windows.h GetSystemTimeAsFileTime
5671 check_func_headers windows.h LoadLibrary
5672 check_func_headers windows.h MapViewOfFile
5673 check_func_headers windows.h PeekNamedPipe
5674 check_func_headers windows.h SetConsoleTextAttribute
5675 check_func_headers windows.h SetConsoleCtrlHandler
5676 check_func_headers windows.h Sleep
5677 check_func_headers windows.h VirtualAlloc
5678 check_func_headers glob.h glob
5679 enabled xlib &&
5680     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5681
5682 check_header direct.h
5683 check_header dirent.h
5684 check_header dxgidebug.h
5685 check_header dxva.h
5686 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5687 check_header io.h
5688 check_header libcrystalhd/libcrystalhd_if.h
5689 check_header malloc.h
5690 check_header net/udplite.h
5691 check_header poll.h
5692 check_header sys/param.h
5693 check_header sys/resource.h
5694 check_header sys/select.h
5695 check_header sys/time.h
5696 check_header sys/un.h
5697 check_header termios.h
5698 check_header unistd.h
5699 check_header valgrind/valgrind.h
5700 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5701 check_header windows.h
5702 check_header X11/extensions/XvMClib.h
5703 check_header asm/types.h
5704
5705 # it seems there are versions of clang in some distros that try to use the
5706 # gcc headers, which explodes for stdatomic
5707 # so we also check that atomics actually work here
5708 check_builtin stdatomic stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0)"
5709
5710 check_lib advapi32 "windows.h"            RegCloseKey          -ladvapi32
5711 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
5712 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
5713 check_lib wincrypt "windows.h wincrypt.h" CryptGenRandom       -ladvapi32
5714 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
5715
5716 enabled appkit       && check_apple_framework AppKit
5717 enabled audiotoolbox && check_apple_framework AudioToolbox
5718 enabled avfoundation && check_apple_framework AVFoundation
5719 enabled coreimage    && check_apple_framework CoreImage
5720 enabled videotoolbox && check_apple_framework VideoToolbox
5721
5722 check_apple_framework CoreFoundation
5723 check_apple_framework CoreMedia
5724 check_apple_framework CoreVideo
5725
5726 enabled avfoundation && {
5727     disable coregraphics applicationservices
5728     check_lib coregraphics        CoreGraphics/CoreGraphics.h               CGGetActiveDisplayList "-framework CoreGraphics" ||
5729     check_lib applicationservices ApplicationServices/ApplicationServices.h CGGetActiveDisplayList "-framework ApplicationServices"; }
5730
5731 enabled videotoolbox && {
5732     check_lib coreservices CoreServices/CoreServices.h UTGetOSTypeFromString "-framework CoreServices"
5733     check_func_headers CoreMedia/CMFormatDescription.h kCMVideoCodecType_HEVC "-framework CoreMedia"
5734 }
5735
5736 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5737
5738 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5739 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5740 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5741 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5742 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5743
5744 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
5745 check_type "va/va.h va/va_dec_vp8.h" "VAPictureParameterBufferVP8"
5746 check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
5747 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
5748 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
5749 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
5750 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
5751 check_type "va/va.h va/va_enc_mpeg2.h" "VAEncPictureParameterBufferMPEG2"
5752 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
5753 check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
5754
5755 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5756
5757 check_cpp_condition windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)" && enable winrt || disable winrt
5758
5759 if ! disabled w32threads && ! enabled pthreads; then
5760     check_func_headers "windows.h process.h" _beginthreadex &&
5761         check_type "windows.h" CONDITION_VARIABLE &&
5762         enable w32threads || disable w32threads
5763     if ! enabled w32threads && enabled winrt; then
5764         check_func_headers "windows.h" CreateThread &&
5765             enable w32threads || disable w32threads
5766     fi
5767 fi
5768
5769 # check for some common methods of building with pthread support
5770 # do this before the optional library checks as some of them require pthreads
5771 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5772     if check_lib pthreads pthread.h pthread_join   -pthread &&
5773        check_lib pthreads pthread.h pthread_create -pthread; then
5774         add_cflags -pthread
5775     elif check_lib pthreads pthread.h pthread_join   -pthreads &&
5776          check_lib pthreads pthread.h pthread_create -pthreads; then
5777         add_cflags -pthreads
5778     elif check_lib pthreads pthread.h pthread_join   -ldl -pthread &&
5779          check_lib pthreads pthread.h pthread_create -ldl -pthread; then
5780         add_cflags -ldl -pthread
5781     elif check_lib pthreads pthread.h pthread_join   -lpthreadGC2 &&
5782          check_lib pthreads pthread.h pthread_create -lpthreadGC2; then
5783         :
5784     elif check_lib pthreads pthread.h pthread_join   -lpthread &&
5785          check_lib pthreads pthread.h pthread_create -lpthread; then
5786         :
5787     elif check_func pthread_join && check_func pthread_create; then
5788         enable pthreads
5789     fi
5790     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
5791
5792     if enabled pthreads; then
5793         check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
5794         check_func pthread_cancel $pthreads_extralibs
5795     fi
5796 fi
5797
5798 enabled  zlib && check_lib zlib   zlib.h      zlibVersion    -lz
5799 enabled bzlib && check_lib bzlib bzlib.h BZ2_bzlibVersion    -lbz2
5800 enabled  lzma && check_lib lzma   lzma.h lzma_version_number -llzma
5801
5802 # On some systems dynamic loading requires no extra linker flags
5803 check_lib libdl dlfcn.h "dlopen dlsym" || check_lib libdl dlfcn.h "dlopen dlsym" -ldl
5804
5805 check_lib libm math.h sin -lm
5806
5807 atan2f_args=2
5808 copysign_args=2
5809 hypot_args=2
5810 ldexpf_args=2
5811 powf_args=2
5812
5813 for func in $MATH_FUNCS; do
5814     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
5815 done
5816
5817 for func in $COMPLEX_FUNCS; do
5818     eval check_complexfunc $func \${${func}_args:-1}
5819 done
5820
5821 # these are off by default, so fail if requested and not available
5822 enabled cuda_sdk          && require cuda_sdk cuda.h cuCtxCreate -lcuda
5823 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
5824 enabled decklink          && { require_header DeckLinkAPI.h &&
5825                                { check_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a060100" || die "ERROR: Decklink API version must be >= 10.6.1."; } }
5826 enabled libndi_newtek     && require_header Processing.NDI.Lib.h
5827 enabled frei0r            && require_header frei0r.h
5828 enabled gmp               && require gmp gmp.h mpz_export -lgmp
5829 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init
5830 enabled jni               && { [ $target_os = "android" ] && check_header jni.h && enabled pthreads || die "ERROR: jni not found"; }
5831 enabled ladspa            && require_header ladspa.h
5832 enabled lv2               && require_pkg_config lv2 lilv-0 "lilv-0/lilv/lilv.h" lilv_world_new
5833 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5834 enabled libass            && require_pkg_config libass libass ass/ass.h ass_library_init
5835 enabled libbluray         && require_pkg_config libbluray libbluray libbluray/bluray.h bd_open
5836 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
5837 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5838                              { check_lib libcelt celt/celt.h celt_decoder_create_custom -lcelt0 ||
5839                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5840 enabled libcaca           && require_pkg_config libcaca caca caca.h caca_create_canvas
5841 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
5842 enabled libdrm            && require_pkg_config libdrm libdrm xf86drm.h drmGetVersion
5843 enabled libfdk_aac        && { check_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
5844                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
5845                                  warn "using libfdk without pkg-config"; } }
5846 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"
5847 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_extralibs
5848 enabled fontconfig        && enable libfontconfig
5849 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
5850 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
5851 enabled libfribidi        && require_pkg_config libfribidi fribidi fribidi.h fribidi_version_info
5852 enabled libgme            && { check_pkg_config libgme libgme gme/gme.h gme_new_emu ||
5853                                require libgme gme/gme.h gme_new_emu -lgme -lstdc++; }
5854 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
5855                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
5856                                done || die "ERROR: libgsm not found"; }
5857 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc $pthreads_extralibs
5858 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
5859 # While it may appear that require is being used as a pkg-config
5860 # fallback for libmfx, it is actually being used to detect a different
5861 # installation route altogether.  If libmfx is installed via the Intel
5862 # Media SDK or Intel Media Server Studio, these don't come with
5863 # pkg-config support.  Instead, users should make sure that the build
5864 # can find the libraries and headers through other means.
5865 enabled libmfx            && { check_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit ||
5866                                { require libmfx "mfx/mfxvideo.h" MFXInit "-llibmfx $advapi32_extralibs" && warn "using libmfx without pkg-config"; } }
5867 enabled libmodplug        && require_pkg_config libmodplug libmodplug libmodplug/modplug.h ModPlug_Load
5868 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame $libm_extralibs
5869 enabled libmysofa         && require libmysofa "mysofa.h" mysofa_load -lmysofa $zlib_extralibs
5870 enabled libnpp            && { check_lib libnpp npp.h nppGetLibVersion -lnppig -lnppicc -lnppc ||
5871                                check_lib libnpp npp.h nppGetLibVersion -lnppi -lnppc ||
5872                                die "ERROR: libnpp not found"; }
5873 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
5874 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
5875 enabled libopencv         && { check_header opencv2/core/core_c.h &&
5876                                { check_pkg_config libopencv opencv opencv2/core/core_c.h cvCreateImageHeader ||
5877                                  require libopencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
5878                                require_pkg_config libopencv opencv opencv/cxcore.h cvCreateImageHeader; }
5879 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
5880 enabled libopenjpeg       && { check_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version ||
5881                                { require_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } }
5882 enabled libopenmpt        && require_pkg_config libopenmpt "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create -lstdc++ && append libopenmpt_extralibs "-lstdc++"
5883 enabled libopus           && {
5884     enabled libopus_decoder && {
5885         require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
5886     }
5887     enabled libopus_encoder && {
5888         require_pkg_config libopus opus opus_multistream.h opus_multistream_surround_encoder_create
5889     }
5890 }
5891 enabled libpulse          && require_pkg_config libpulse libpulse pulse/pulseaudio.h pa_context_new
5892 enabled librsvg           && require_pkg_config librsvg librsvg-2.0 librsvg-2.0/librsvg/rsvg.h rsvg_handle_render_cairo
5893 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
5894 enabled librubberband     && require_pkg_config librubberband "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new -lstdc++ && append librubberband_extralibs "-lstdc++"
5895 enabled libshine          && require_pkg_config libshine shine shine/layer3.h shine_encode_buffer
5896 enabled libsmbclient      && { check_pkg_config libsmbclient smbclient libsmbclient.h smbc_init ||
5897                                require libsmbclient libsmbclient.h smbc_init -lsmbclient; }
5898 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy -lstdc++
5899 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
5900 enabled libssh            && require_pkg_config libssh libssh libssh/sftp.h sftp_init
5901 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init
5902 enabled libtesseract      && require_pkg_config libtesseract tesseract tesseract/capi.h TessBaseAPICreate
5903 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
5904 enabled libtls            && require_pkg_config libtls libtls tls.h tls_configure
5905 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
5906                              { check_lib libtwolame twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
5907                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
5908 enabled libv4l2           && require_pkg_config libv4l2 libv4l2 libv4l2.h v4l2_ioctl
5909 enabled libvidstab        && require_pkg_config libvidstab "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
5910 enabled libvmaf           && require_pkg_config libvmaf libvmaf libvmaf.h compute_vmaf
5911 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
5912 enabled libvorbis         && require_pkg_config libvorbis vorbis vorbis/codec.h vorbis_info_init &&
5913                              require_pkg_config libvorbisenc vorbisenc vorbis/vorbisenc.h vorbis_encode_init
5914
5915 enabled libvpx            && {
5916     enabled libvpx_vp8_decoder && {
5917         check_pkg_config libvpx_vp8_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
5918             check_lib libvpx_vp8_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_dec_init_ver VPX_IMG_FMT_HIGHBITDEPTH" -lvpx ||
5919                 die "ERROR: libvpx decoder version must be >=1.4.0";
5920     }
5921     enabled libvpx_vp8_encoder && {
5922         check_pkg_config libvpx_vp8_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
5923             check_lib libvpx_vp8_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VPX_IMG_FMT_HIGHBITDEPTH" -lvpx ||
5924                 die "ERROR: libvpx encoder version must be >=1.4.0";
5925     }
5926     enabled libvpx_vp9_decoder && {
5927         check_pkg_config libvpx_vp9_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
5928             check_lib libvpx_vp9_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx VPX_IMG_FMT_HIGHBITDEPTH" "-lvpx $libm_extralibs"
5929     }
5930     enabled libvpx_vp9_encoder && {
5931         check_pkg_config libvpx_vp9_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
5932             check_lib libvpx_vp9_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VPX_IMG_FMT_HIGHBITDEPTH" "-lvpx $libm_extralibs"
5933     }
5934     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
5935         die "libvpx enabled but no supported decoders found"
5936     fi
5937 }
5938
5939 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
5940 enabled libwebp           && {
5941     enabled libwebp_encoder      && require_pkg_config libwebp "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
5942     enabled libwebp_anim_encoder && check_pkg_config libwebp_anim_encoder "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit; }
5943 enabled libx264           && { check_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode ||
5944                                { require libx264 "stdint.h x264.h" x264_encoder_encode -lx264 &&
5945                                  warn "using libx264 without pkg-config"; } } &&
5946                              require_cpp_condition x264.h "X264_BUILD >= 118" &&
5947                              { check_cpp_condition x264.h "X264_MPEG2" &&
5948                                enable libx262; }
5949 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
5950                              require_cpp_condition x265.h "X265_BUILD >= 68"
5951 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode "-lxavs $pthreads_extralibs $libm_extralibs"
5952 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
5953 enabled libzimg           && require_pkg_config libzimg "zimg >= 2.7.0" zimg.h zimg_get_api_version
5954 enabled libzmq            && require_pkg_config libzmq libzmq zmq.h zmq_ctx_new
5955 enabled libzvbi           && require_pkg_config libzvbi zvbi-0.2 libzvbi.h vbi_decoder_new &&
5956                              { check_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
5957                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
5958 enabled libxml2           && require_pkg_config libxml2 libxml-2.0 libxml2/libxml/xmlversion.h xmlCheckVersion
5959 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
5960 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
5961                                { ! enabled cross_compile &&
5962                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
5963                                  add_ldflags -L/opt/vc/lib/ &&
5964                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
5965                                die "ERROR: mmal not found" &&
5966                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
5967 enabled openal            && { { for al_extralibs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
5968                                check_lib openal 'AL/al.h' alGetError "${al_extralibs}" && break; done } ||
5969                                die "ERROR: openal not found"; } &&
5970                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
5971                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
5972 enabled opencl            && { check_lib opencl OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
5973                                check_lib opencl CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
5974                                die "ERROR: opencl not found"; } &&
5975                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
5976                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
5977                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
5978 enabled opengl            && { check_lib opengl GL/glx.h glXGetProcAddress "-lGL" ||
5979                                check_lib opengl windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
5980                                check_lib opengl OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
5981                                check_lib opengl ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
5982                                die "ERROR: opengl not found."
5983                              }
5984 enabled omx               && require_header OMX_Core.h
5985 enabled omx_rpi           && { check_header OMX_Core.h ||
5986                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_header OMX_Core.h ; } ||
5987                                die "ERROR: OpenMAX IL headers not found"; } && enable omx
5988 enabled openssl           && { check_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
5989                                check_pkg_config openssl openssl openssl/ssl.h SSL_library_init ||
5990                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
5991                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
5992                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
5993                                die "ERROR: openssl not found"; }
5994 enabled rkmpp             && { { require_pkg_config rkmpp rockchip_mpp rockchip/rk_mpi.h mpp_create ||
5995                                  die "ERROR : Rockchip MPP was not found."; } &&
5996                                { check_func_headers rockchip/rk_mpi_cmd.h "MPP_DEC_GET_FREE_PACKET_SLOT_COUNT" ||
5997                                  die "ERROR: Rockchip MPP is outdated, please get a more recent one."; } &&
5998                                { enabled libdrm ||
5999                                  die "ERROR: rkmpp requires --enable-libdrm"; }
6000                              }
6001
6002 if enabled gcrypt; then
6003     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
6004     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
6005         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
6006         gcrypt_extralibs=$("${GCRYPT_CONFIG}" --libs)
6007         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_extralibs ||
6008             die "ERROR: gcrypt not found"
6009         add_cflags $gcrypt_cflags
6010     else
6011         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
6012     fi
6013 fi
6014
6015 if enabled sdl2; then
6016     SDL2_CONFIG="${cross_prefix}sdl2-config"
6017     if test_pkg_config sdl2 "sdl2 >= 2.0.1 sdl2 < 2.1.0" SDL_events.h SDL_PollEvent; then
6018         check_func SDL_Init $sdl2_extralibs $sdl2_cflags ||
6019             disable sdl2
6020     elif "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
6021         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
6022         sdl2_extralibs=$("${SDL2_CONFIG}" --libs)
6023         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
6024         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
6025         check_func SDL_Init $sdl2_extralibs $sdl2_cflags &&
6026             enable sdl2
6027     fi
6028     if test $target_os = "mingw32"; then
6029         sdl2_extralibs=$(filter_out '-mwindows' $sdl2_extralibs)
6030     fi
6031 fi
6032
6033 if enabled decklink; then
6034     case $target_os in
6035         mingw32*|mingw64*|win32|win64)
6036             decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
6037             decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
6038             ;;
6039     esac
6040 fi
6041
6042 enabled securetransport &&
6043     check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
6044     check_lib securetransport "Security/SecureTransport.h Security/Security.h" "SSLCreateContext" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" ||
6045         disable securetransport
6046
6047 enabled securetransport &&
6048     check_func SecItemImport "-Wl,-framework,CoreFoundation -Wl,-framework,Security"
6049
6050 enabled schannel &&
6051     check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
6052     check_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" &&
6053     schannel_extralibs="-lsecur32" ||
6054         disable schannel
6055
6056 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
6057 enabled makeinfo \
6058     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
6059     && enable makeinfo_html || disable makeinfo_html
6060 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
6061 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
6062 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
6063 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
6064
6065 # check V4L2 codecs available in the API
6066 check_header linux/fb.h
6067 check_header linux/videodev2.h
6068 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6069 check_code cc linux/videodev2.h "int i = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_VIDEO_M2M | V4L2_BUF_FLAG_LAST;" || disable v4l2_m2m
6070 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_VC1_ANNEX_G;" && enable vc1_v4l2_m2m
6071 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG1;" && enable mpeg1_v4l2_m2m
6072 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG2;" && enable mpeg2_v4l2_m2m
6073 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG4;" && enable mpeg4_v4l2_m2m
6074 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_HEVC;" && enable hevc_v4l2_m2m
6075 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_H263;" && enable h263_v4l2_m2m
6076 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_H264;" && enable h264_v4l2_m2m
6077 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_VP8;" && enable vp8_v4l2_m2m
6078 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_VP9;" && enable vp9_v4l2_m2m
6079
6080 check_header sys/videoio.h
6081 check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6082
6083 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
6084 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
6085 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
6086 # w32api 3.12 had it defined wrong
6087 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
6088
6089 check_type "dshow.h" IBaseFilter
6090
6091 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
6092 check_header "dev/bktr/ioctl_meteor.h dev/bktr/ioctl_bt848.h"                   ||
6093     check_header "machine/ioctl_meteor.h machine/ioctl_bt848.h"                 ||
6094     check_header "dev/video/meteor/ioctl_meteor.h dev/video/bktr/ioctl_bt848.h" ||
6095     check_header "dev/ic/bt8xx.h"
6096
6097 if check_struct sys/soundcard.h audio_buf_info bytes; then
6098     enable_sanitized sys/soundcard.h
6099 else
6100     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_sanitized sys/soundcard.h
6101     #include <sys/soundcard.h>
6102     audio_buf_info abc;
6103 EOF
6104 fi
6105
6106 enabled alsa && check_pkg_config alsa alsa "alsa/asoundlib.h" snd_pcm_htimestamp ||
6107     check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound
6108
6109 enabled libjack &&
6110     require_pkg_config libjack jack jack/jack.h jack_port_get_latency_range
6111
6112 enabled sndio && check_lib sndio sndio.h sio_open -lsndio
6113
6114 if enabled libcdio; then
6115     check_pkg_config libcdio libcdio_paranoia "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open ||
6116     check_pkg_config libcdio libcdio_paranoia "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open ||
6117     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6118     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6119     die "ERROR: No usable libcdio/cdparanoia found"
6120 fi
6121
6122 enabled libxcb && check_pkg_config libxcb "xcb >= 1.4" xcb/xcb.h xcb_connect ||
6123     disable libxcb_shm libxcb_shape libxcb_xfixes
6124
6125 if enabled libxcb; then
6126     enabled libxcb_shm    && check_pkg_config libxcb_shm    xcb-shm    xcb/shm.h    xcb_shm_attach
6127     enabled libxcb_shape  && check_pkg_config libxcb_shape  xcb-shape  xcb/shape.h  xcb_shape_get_rectangles
6128     enabled libxcb_xfixes && check_pkg_config libxcb_xfixes xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image
6129 fi
6130
6131 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6132
6133 # d3d11va requires linking directly to dxgi and d3d11 if not building for
6134 # the desktop api partition
6135 check_cpp <<EOF && enable uwp && d3d11va_extralibs="-ldxgi -ld3d11"
6136 #ifdef WINAPI_FAMILY
6137 #include <winapifamily.h>
6138 #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
6139 #error desktop, not uwp
6140 #else
6141 // WINAPI_FAMILY_APP, WINAPI_FAMILY_PHONE_APP => UWP
6142 #endif
6143 #else
6144 #error no family set
6145 #endif
6146 EOF
6147
6148 enabled vaapi &&
6149     check_lib vaapi va/va.h vaInitialize -lva
6150
6151 enabled vaapi &&
6152     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
6153     disable vaapi
6154
6155 enabled vaapi &&
6156     check_lib vaapi_drm "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm
6157
6158 enabled vaapi &&
6159     check_lib vaapi_x11 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 -lX11
6160
6161 enabled vaapi &&
6162     check_cpp_condition "va/va.h" "VA_CHECK_VERSION(1, 0, 0)" &&
6163     enable vaapi_1
6164
6165 if enabled_all opencl vaapi ; then
6166     check_type "CL/cl_intel.h" "clCreateImageFromFdINTEL_fn" &&
6167         enable opencl_vaapi_beignet
6168     if enabled libmfx ; then
6169         check_type "CL/cl.h CL/va_ext.h" "clCreateFromVA_APIMediaSurfaceINTEL_fn" &&
6170             enable opencl_vaapi_intel_media
6171     fi
6172 fi
6173
6174 if enabled_all opencl dxva2 ; then
6175     check_type "CL/cl_dx9_media_sharing.h" cl_dx9_surface_info_khr &&
6176         enable opencl_dxva2
6177 fi
6178
6179 if enabled_all opencl d3d11va ; then
6180     check_type "CL/cl_d3d11.h" clGetDeviceIDsFromD3D11KHR_fn &&
6181         enable opencl_d3d11
6182 fi
6183
6184 if enabled_all opencl libdrm ; then
6185     check_func_headers "CL/cl_ext.h" clImportMemoryARM &&
6186         enable opencl_drm_arm
6187 fi
6188
6189 enabled vdpau &&
6190     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
6191     disable vdpau
6192
6193 enabled vdpau &&
6194     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
6195
6196 enabled crystalhd && check_lib crystalhd "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd
6197
6198 if enabled x86; then
6199     case $target_os in
6200         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6201             ;;
6202         *)
6203             disable cuda cuvid nvdec nvenc
6204             ;;
6205     esac
6206 else
6207     disable cuda cuvid nvdec nvenc
6208 fi
6209
6210 enabled nvenc &&
6211     check_cc -I$source_path <<EOF || disable nvenc
6212 #include "compat/nvenc/nvEncodeAPI.h"
6213 NV_ENCODE_API_FUNCTION_LIST flist;
6214 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6215 int main(void) { return 0; }
6216 EOF
6217
6218 enabled amf &&
6219     check_cpp_condition "AMF/core/Version.h" \
6220         "(AMF_VERSION_MAJOR << 48 | AMF_VERSION_MINOR << 32 | AMF_VERSION_RELEASE << 16 | AMF_VERSION_BUILD_NUM) >= 0x0001000400040001" ||
6221     disable amf
6222
6223 # Funny iconv installations are not unusual, so check it after all flags have been set
6224 if enabled libc_iconv; then
6225     check_func_headers iconv.h iconv
6226 elif enabled iconv; then
6227     check_func_headers iconv.h iconv || check_lib iconv iconv.h iconv -liconv
6228 fi
6229
6230 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6231
6232 # add some useful compiler flags if supported
6233 check_cflags -Wdeclaration-after-statement
6234 check_cflags -Wall
6235 check_cflags -Wdisabled-optimization
6236 check_cflags -Wpointer-arith
6237 check_cflags -Wredundant-decls
6238 check_cflags -Wwrite-strings
6239 check_cflags -Wtype-limits
6240 check_cflags -Wundef
6241 check_cflags -Wmissing-prototypes
6242 check_cflags -Wno-pointer-to-int-cast
6243 check_cflags -Wstrict-prototypes
6244 check_cflags -Wempty-body
6245
6246 if enabled extra_warnings; then
6247     check_cflags -Wcast-qual
6248     check_cflags -Wextra
6249     check_cflags -Wpedantic
6250 fi
6251
6252 check_disable_warning(){
6253     warning_flag=-W${1#-Wno-}
6254     test_cflags $unknown_warning_flags $warning_flag && add_cflags $1
6255 }
6256
6257 test_cflags -Werror=unused-command-line-argument &&
6258     append unknown_warning_flags "-Werror=unused-command-line-argument"
6259 test_cflags -Werror=unknown-warning-option &&
6260     append unknown_warning_flags "-Werror=unknown-warning-option"
6261
6262 check_disable_warning -Wno-parentheses
6263 check_disable_warning -Wno-switch
6264 check_disable_warning -Wno-format-zero-length
6265 check_disable_warning -Wno-pointer-sign
6266 check_disable_warning -Wno-unused-const-variable
6267 check_disable_warning -Wno-bool-operation
6268
6269 check_disable_warning_headers(){
6270     warning_flag=-W${1#-Wno-}
6271     test_cflags $warning_flag && add_cflags_headers $1
6272 }
6273
6274 check_disable_warning_headers -Wno-deprecated-declarations
6275 check_disable_warning_headers -Wno-unused-variable
6276
6277 check_cc <<EOF && enable blocks_extension
6278 void (^block)(void);
6279 EOF
6280
6281 # add some linker flags
6282 check_ldflags -Wl,--warn-common
6283 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6284 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir && add_ldsoflags -Wl,-rpath,$libdir
6285 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6286
6287 # add some strip flags
6288 check_stripflags -x
6289
6290 enabled neon_clobber_test &&
6291     check_ldflags -Wl,--wrap,avcodec_open2              \
6292                   -Wl,--wrap,avcodec_decode_audio4      \
6293                   -Wl,--wrap,avcodec_decode_video2      \
6294                   -Wl,--wrap,avcodec_decode_subtitle2   \
6295                   -Wl,--wrap,avcodec_encode_audio2      \
6296                   -Wl,--wrap,avcodec_encode_video2      \
6297                   -Wl,--wrap,avcodec_encode_subtitle    \
6298                   -Wl,--wrap,avcodec_send_packet        \
6299                   -Wl,--wrap,avcodec_receive_packet     \
6300                   -Wl,--wrap,avcodec_send_frame         \
6301                   -Wl,--wrap,avcodec_receive_frame      \
6302                   -Wl,--wrap,swr_convert                \
6303                   -Wl,--wrap,avresample_convert ||
6304     disable neon_clobber_test
6305
6306 enabled xmm_clobber_test &&
6307     check_ldflags -Wl,--wrap,avcodec_open2              \
6308                   -Wl,--wrap,avcodec_decode_audio4      \
6309                   -Wl,--wrap,avcodec_decode_video2      \
6310                   -Wl,--wrap,avcodec_decode_subtitle2   \
6311                   -Wl,--wrap,avcodec_encode_audio2      \
6312                   -Wl,--wrap,avcodec_encode_video2      \
6313                   -Wl,--wrap,avcodec_encode_subtitle    \
6314                   -Wl,--wrap,avcodec_send_packet        \
6315                   -Wl,--wrap,avcodec_receive_packet     \
6316                   -Wl,--wrap,avcodec_send_frame         \
6317                   -Wl,--wrap,avcodec_receive_frame      \
6318                   -Wl,--wrap,swr_convert                \
6319                   -Wl,--wrap,avresample_convert         \
6320                   -Wl,--wrap,sws_scale ||
6321     disable xmm_clobber_test
6322
6323 check_ld "cc" <<EOF && enable proper_dce
6324 extern const int array[512];
6325 static inline int func(void) { return array[0]; }
6326 int main(void) { return 0; }
6327 EOF
6328
6329 if enabled proper_dce; then
6330     echo "X { local: *; };" > $TMPV
6331     if test_ldflags -Wl,${version_script},$TMPV; then
6332         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6333         quotes='""'
6334         check_cc <<EOF && enable symver_asm_label
6335 void ff_foo(void) __asm__ ("av_foo@VERSION");
6336 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6337 EOF
6338         check_cc <<EOF && enable symver_gnu_asm
6339 __asm__(".symver ff_foo,av_foo@VERSION");
6340 void ff_foo(void) {}
6341 EOF
6342     fi
6343 fi
6344
6345 if [ -z "$optflags" ]; then
6346     if enabled small; then
6347         optflags=$cflags_size
6348     elif enabled optimizations; then
6349         optflags=$cflags_speed
6350     else
6351         optflags=$cflags_noopt
6352     fi
6353 fi
6354
6355 if [ -z "$nvccflags" ]; then
6356     nvccflags=$nvccflags_default
6357 fi
6358
6359 if enabled x86_64 || enabled ppc64 || enabled aarch64; then
6360     nvccflags="$nvccflags -m64"
6361 else
6362     nvccflags="$nvccflags -m32"
6363 fi
6364
6365 check_optflags(){
6366     check_cflags "$@"
6367     enabled lto && check_ldflags "$@"
6368 }
6369
6370 check_optflags $optflags
6371 check_optflags -fno-math-errno
6372 check_optflags -fno-signed-zeros
6373
6374 if enabled lto; then
6375     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6376     check_cflags  -flto
6377     check_ldflags -flto $cpuflags
6378     disable inline_asm_direct_symbol_refs
6379 fi
6380
6381 enabled ftrapv && check_cflags -ftrapv
6382
6383 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6384 int x;
6385 EOF
6386
6387
6388 if enabled icc; then
6389     # Just warnings, no remarks
6390     check_cflags -w1
6391     # -wd: Disable following warnings
6392     # 144, 167, 556: -Wno-pointer-sign
6393     # 188: enumerated type mixed with another type
6394     # 1292: attribute "foo" ignored
6395     # 1419: external declaration in primary source file
6396     # 10006: ignoring unknown option -fno-signed-zeros
6397     # 10148: ignoring unknown option -Wno-parentheses
6398     # 10156: ignoring option '-W'; no argument required
6399     # 13200: No EMMS instruction before call to function
6400     # 13203: No EMMS instruction before return from function
6401     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6402     # 11030: Warning unknown option --as-needed
6403     # 10156: ignoring option '-export'; no argument required
6404     check_ldflags -wd10156,11030
6405     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6406     enable ebp_available
6407     # The test above does not test linking
6408     enabled lto && disable symver_asm_label
6409     if enabled x86_32; then
6410         icc_version=$($cc -dumpversion)
6411         test ${icc_version%%.*} -ge 11 &&
6412             check_cflags -falign-stack=maintain-16-byte ||
6413             disable aligned_stack
6414     fi
6415 elif enabled gcc; then
6416     check_optflags -fno-tree-vectorize
6417     check_cflags -Werror=format-security
6418     check_cflags -Werror=implicit-function-declaration
6419     check_cflags -Werror=missing-prototypes
6420     check_cflags -Werror=return-type
6421     check_cflags -Werror=vla
6422     check_cflags -Wformat
6423     check_cflags -fdiagnostics-color=auto
6424     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6425 elif enabled llvm_gcc; then
6426     check_cflags -mllvm -stack-alignment=16
6427 elif enabled clang; then
6428     check_cflags -mllvm -stack-alignment=16
6429     check_cflags -mstack-alignment=16
6430     check_cflags -Qunused-arguments
6431     check_cflags -Werror=implicit-function-declaration
6432     check_cflags -Werror=missing-prototypes
6433     check_cflags -Werror=return-type
6434 elif enabled cparser; then
6435     add_cflags -Wno-missing-variable-declarations
6436     add_cflags -Wno-empty-statement
6437 elif enabled armcc; then
6438     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6439     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6440     # 2523: use of inline assembly is deprecated
6441     add_cflags -W${armcc_opt},--diag_suppress=2523
6442     add_cflags -W${armcc_opt},--diag_suppress=1207
6443     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6444     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6445     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6446     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6447 elif enabled pathscale; then
6448     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6449     disable inline_asm
6450 elif enabled_any msvc icl; then
6451     enabled x86_32 && disable aligned_stack
6452     enabled_all x86_32 debug && add_cflags -Oy-
6453     enabled debug && add_ldflags -debug
6454     enable pragma_deprecated
6455     if enabled icl; then
6456         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6457         # (correctly) on icl 13.x.
6458         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6459             add_cflags -Qansi-alias
6460         # Some inline asm is not compilable in debug
6461         if enabled debug; then
6462             disable ebp_available
6463             disable ebx_available
6464         fi
6465     fi
6466     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6467     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
6468     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6469     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6470     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6471     # MSVC 2013 and newer can handle it fine.
6472     # If this declspec fails, force including stdlib.h before the restrict redefinition
6473     # happens in config.h.
6474     if [ $_restrict != restrict ]; then
6475         check_cc <<EOF || add_cflags -FIstdlib.h
6476 __declspec($_restrict) void* foo(int);
6477 EOF
6478     fi
6479     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6480     # Issue has been fixed in MSVC v19.00.24218.
6481     check_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6482         check_cflags -d2SSAOptimizer-
6483     # enable utf-8 source processing on VS2015 U2 and newer
6484     check_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6485         add_cflags -utf-8
6486 fi
6487
6488 for pfx in "" host_; do
6489     varname=${pfx%_}cc_type
6490     eval "type=\$$varname"
6491     if [ "$type" = "msvc" ]; then
6492         check_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6493 static inline int foo(int a) { return a; }
6494 EOF
6495     fi
6496 done
6497
6498 case $as_type in
6499     clang)
6500         add_asflags -Qunused-arguments
6501     ;;
6502 esac
6503
6504 case $ld_type in
6505     clang)
6506         check_ldflags -Qunused-arguments
6507     ;;
6508 esac
6509
6510 enable frame_thread_encoder
6511
6512 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6513
6514 check_deps $CONFIG_LIST       \
6515            $CONFIG_EXTRA      \
6516            $HAVE_LIST         \
6517            $ALL_COMPONENTS    \
6518
6519 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"
6520
6521
6522 if test $target_os = "haiku"; then
6523     disable memalign
6524     disable posix_memalign
6525 fi
6526
6527 flatten_extralibs(){
6528     unset nested_entries
6529     list_name=$1
6530     eval list=\$${1}
6531     for entry in $list; do
6532         entry_copy=$entry
6533         resolve entry_copy
6534         append nested_entries $(filter '*_extralibs' $entry_copy)
6535         flat_entries=$(filter_out '*_extralibs' $entry_copy)
6536         eval $entry="\$flat_entries"
6537     done
6538     append $list_name "$nested_entries"
6539
6540     resolve nested_entries
6541     if test -n "$(filter '*_extralibs' $nested_entries)"; then
6542         flatten_extralibs $list_name
6543     fi
6544 }
6545
6546 flatten_extralibs_wrapper(){
6547     list_name=$1
6548     flatten_extralibs $list_name
6549     unique $list_name
6550     resolve $list_name
6551     eval $list_name=\$\(\$ldflags_filter \$$list_name\)
6552     eval printf \''%s'\' \""\$$list_name"\"
6553 }
6554
6555 for linkunit in $LIBRARY_LIST; do
6556     unset current_extralibs
6557     eval components=\$$(toupper ${linkunit})_COMPONENTS_LIST
6558     for comp in ${components}; do
6559         enabled $comp || continue
6560         comp_extralibs="${comp}_extralibs"
6561         append current_extralibs $comp_extralibs
6562     done
6563     eval prepend ${linkunit}_extralibs $current_extralibs
6564 done
6565
6566 for linkunit in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
6567     eval ${linkunit}_extralibs=\$\(flatten_extralibs_wrapper ${linkunit}_extralibs\)
6568 done
6569
6570 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6571
6572 for thread in $THREADS_LIST; do
6573     if enabled $thread; then
6574         test -n "$thread_type" &&
6575             die "ERROR: Only one thread type must be selected." ||
6576             thread_type="$thread"
6577     fi
6578 done
6579
6580 if disabled stdatomic; then
6581     if enabled atomics_gcc; then
6582         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
6583     elif enabled atomics_win32; then
6584         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
6585     elif enabled atomics_suncc; then
6586         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
6587     elif enabled pthreads; then
6588         add_compat atomics/pthread/stdatomic.o
6589         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
6590     else
6591         enabled threads && die "Threading is enabled, but no atomics are available"
6592         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
6593     fi
6594 fi
6595
6596 # Check if requested libraries were found.
6597 for lib in $AUTODETECT_LIBS; do
6598     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
6599 done
6600
6601 enabled zlib && add_cppflags -DZLIB_CONST
6602
6603 # conditional library dependencies, in linking order
6604 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6605 enabled afir_filter         && prepend avfilter_deps "avcodec"
6606 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6607 enabled aresample_filter    && prepend avfilter_deps "swresample"
6608 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6609 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6610 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6611 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6612 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6613 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6614 enabled firequalizer_filter && prepend avfilter_deps "avcodec"
6615 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6616 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6617 enabled pan_filter          && prepend avfilter_deps "swresample"
6618 enabled pp_filter           && prepend avfilter_deps "postproc"
6619 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6620 enabled resample_filter && prepend avfilter_deps "avresample"
6621 enabled sab_filter          && prepend avfilter_deps "swscale"
6622 enabled scale_filter    && prepend avfilter_deps "swscale"
6623 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6624 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6625 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6626 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6627 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6628 enabled signature_filter    && prepend avfilter_deps "avcodec avformat"
6629 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6630 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6631 enabled spp_filter          && prepend avfilter_deps "avcodec"
6632 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6633 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6634 enabled zoompan_filter      && prepend avfilter_deps "swscale"
6635
6636 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6637
6638 #FIXME
6639 enabled sdl2_outdev     && add_cflags $(filter_out '-Dmain=SDL_main' $sdl2_cflags)
6640
6641 enabled opus_decoder    && prepend avcodec_deps "swresample"
6642
6643 expand_deps(){
6644     lib_deps=${1}_deps
6645     eval "deps=\$$lib_deps"
6646     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
6647     unique $lib_deps
6648 }
6649
6650 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6651 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6652
6653 map 'expand_deps $v' $LIBRARY_LIST
6654
6655 license="LGPL version 2.1 or later"
6656 if enabled nonfree; then
6657     license="nonfree and unredistributable"
6658 elif enabled gplv3; then
6659     license="GPL version 3 or later"
6660 elif enabled lgplv3; then
6661     license="LGPL version 3 or later"
6662 elif enabled gpl; then
6663     license="GPL version 2 or later"
6664 fi
6665
6666 if test "$quiet" != "yes"; then
6667
6668 echo "install prefix            $prefix"
6669 echo "source path               $source_path"
6670 echo "C compiler                $cc"
6671 echo "C library                 $libc_type"
6672 if test "$host_cc" != "$cc"; then
6673     echo "host C compiler           $host_cc"
6674     echo "host C library            $host_libc_type"
6675 fi
6676 echo "ARCH                      $arch ($cpu)"
6677 if test "$build_suffix" != ""; then
6678     echo "build suffix              $build_suffix"
6679 fi
6680 if test "$progs_suffix" != ""; then
6681     echo "progs suffix              $progs_suffix"
6682 fi
6683 if test "$extra_version" != ""; then
6684     echo "version string suffix     $extra_version"
6685 fi
6686 echo "big-endian                ${bigendian-no}"
6687 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6688 if enabled x86; then
6689     echo "standalone assembly       ${x86asm-no}"
6690     echo "x86 assembler             ${x86asmexe}"
6691     echo "MMX enabled               ${mmx-no}"
6692     echo "MMXEXT enabled            ${mmxext-no}"
6693     echo "3DNow! enabled            ${amd3dnow-no}"
6694     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6695     echo "SSE enabled               ${sse-no}"
6696     echo "SSSE3 enabled             ${ssse3-no}"
6697     echo "AESNI enabled             ${aesni-no}"
6698     echo "AVX enabled               ${avx-no}"
6699     echo "AVX2 enabled              ${avx2-no}"
6700     echo "AVX-512 enabled           ${avx512-no}"
6701     echo "XOP enabled               ${xop-no}"
6702     echo "FMA3 enabled              ${fma3-no}"
6703     echo "FMA4 enabled              ${fma4-no}"
6704     echo "i686 features enabled     ${i686-no}"
6705     echo "CMOV is fast              ${fast_cmov-no}"
6706     echo "EBX available             ${ebx_available-no}"
6707     echo "EBP available             ${ebp_available-no}"
6708 fi
6709 if enabled aarch64; then
6710     echo "NEON enabled              ${neon-no}"
6711     echo "VFP enabled               ${vfp-no}"
6712 fi
6713 if enabled arm; then
6714     echo "ARMv5TE enabled           ${armv5te-no}"
6715     echo "ARMv6 enabled             ${armv6-no}"
6716     echo "ARMv6T2 enabled           ${armv6t2-no}"
6717     echo "VFP enabled               ${vfp-no}"
6718     echo "NEON enabled              ${neon-no}"
6719     echo "THUMB enabled             ${thumb-no}"
6720 fi
6721 if enabled mips; then
6722     echo "MIPS FPU enabled          ${mipsfpu-no}"
6723     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
6724     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
6725     echo "MIPS MSA enabled          ${msa-no}"
6726     echo "LOONGSON MMI enabled      ${mmi-no}"
6727 fi
6728 if enabled ppc; then
6729     echo "AltiVec enabled           ${altivec-no}"
6730     echo "VSX enabled               ${vsx-no}"
6731     echo "POWER8 enabled            ${power8-no}"
6732     echo "PPC 4xx optimizations     ${ppc4xx-no}"
6733     echo "dcbzl available           ${dcbzl-no}"
6734 fi
6735 echo "debug symbols             ${debug-no}"
6736 echo "strip symbols             ${stripping-no}"
6737 echo "optimize for size         ${small-no}"
6738 echo "optimizations             ${optimizations-no}"
6739 echo "static                    ${static-no}"
6740 echo "shared                    ${shared-no}"
6741 echo "postprocessing support    ${postproc-no}"
6742 echo "network support           ${network-no}"
6743 echo "threading support         ${thread_type-no}"
6744 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
6745 echo "texi2html enabled         ${texi2html-no}"
6746 echo "perl enabled              ${perl-no}"
6747 echo "pod2man enabled           ${pod2man-no}"
6748 echo "makeinfo enabled          ${makeinfo-no}"
6749 echo "makeinfo supports HTML    ${makeinfo_html-no}"
6750 test -n "$random_seed" &&
6751     echo "random seed               ${random_seed}"
6752 echo
6753
6754 echo "External libraries:"
6755 print_enabled '' $EXTERNAL_LIBRARY_LIST $EXTERNAL_AUTODETECT_LIBRARY_LIST | print_in_columns
6756 echo
6757
6758 echo "External libraries providing hardware acceleration:"
6759 print_enabled '' $HWACCEL_LIBRARY_LIST $HWACCEL_AUTODETECT_LIBRARY_LIST | print_in_columns
6760 echo
6761
6762 echo "Libraries:"
6763 print_enabled '' $LIBRARY_LIST | print_in_columns
6764 echo
6765
6766 echo "Programs:"
6767 print_enabled '' $PROGRAM_LIST | print_in_columns
6768 echo
6769
6770 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
6771     echo "Enabled ${type}s:"
6772     eval list=\$$(toupper $type)_LIST
6773     print_enabled '_*' $list | print_in_columns
6774     echo
6775 done
6776
6777 if test -n "$ignore_tests"; then
6778     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
6779     echo "Ignored FATE tests:"
6780     echo $ignore_tests | print_in_columns
6781     echo
6782 fi
6783
6784 echo "License: $license"
6785
6786 fi # test "$quiet" != "yes"
6787
6788 if test -n "$WARNINGS"; then
6789     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
6790     enabled fatal_warnings && exit 1
6791 fi
6792
6793 test -e Makefile || echo "include $source_path/Makefile" > Makefile
6794
6795 esc(){
6796     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
6797 }
6798
6799 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" > ffbuild/config.fate
6800
6801 enabled stripping || strip="echo skipping strip"
6802 enabled stripping || striptype=""
6803
6804 config_files="$TMPH ffbuild/config.mak doc/config.texi"
6805
6806 cat > ffbuild/config.mak <<EOF
6807 # Automatically generated by configure - do not modify!
6808 ifndef FFMPEG_CONFIG_MAK
6809 FFMPEG_CONFIG_MAK=1
6810 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
6811 prefix=$prefix
6812 LIBDIR=\$(DESTDIR)$libdir
6813 SHLIBDIR=\$(DESTDIR)$shlibdir
6814 INCDIR=\$(DESTDIR)$incdir
6815 BINDIR=\$(DESTDIR)$bindir
6816 DATADIR=\$(DESTDIR)$datadir
6817 DOCDIR=\$(DESTDIR)$docdir
6818 MANDIR=\$(DESTDIR)$mandir
6819 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
6820 INSTALL_NAME_DIR=$install_name_dir
6821 SRC_PATH=$source_path
6822 SRC_LINK=$source_link
6823 ifndef MAIN_MAKEFILE
6824 SRC_PATH:=\$(SRC_PATH:.%=..%)
6825 endif
6826 CC_IDENT=$cc_ident
6827 ARCH=$arch
6828 INTRINSICS=$intrinsics
6829 EXTERN_PREFIX=$extern_prefix
6830 CC=$cc
6831 CXX=$cxx
6832 AS=$as
6833 OBJCC=$objcc
6834 LD=$ld
6835 DEPCC=$dep_cc
6836 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
6837 DEPAS=$as
6838 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
6839 X86ASM=$x86asmexe
6840 DEPX86ASM=$x86asmexe
6841 DEPX86ASMFLAGS=\$(X86ASMFLAGS)
6842 AR=$ar
6843 ARFLAGS=$arflags
6844 AR_O=$ar_o
6845 AR_CMD=$ar
6846 NM_CMD=$nm
6847 RANLIB=$ranlib
6848 STRIP=$strip
6849 STRIPTYPE=$striptype
6850 NVCC=$nvcc
6851 CP=cp -p
6852 LN_S=$ln_s
6853 CPPFLAGS=$CPPFLAGS
6854 CFLAGS=$CFLAGS
6855 CXXFLAGS=$CXXFLAGS
6856 OBJCFLAGS=$OBJCFLAGS
6857 ASFLAGS=$ASFLAGS
6858 NVCCFLAGS=$nvccflags
6859 AS_C=$AS_C
6860 AS_O=$AS_O
6861 OBJCC_C=$OBJCC_C
6862 OBJCC_E=$OBJCC_E
6863 OBJCC_O=$OBJCC_O
6864 CC_C=$CC_C
6865 CC_E=$CC_E
6866 CC_O=$CC_O
6867 CXX_C=$CXX_C
6868 CXX_O=$CXX_O
6869 NVCC_C=$NVCC_C
6870 NVCC_O=$NVCC_O
6871 LD_O=$LD_O
6872 X86ASM_O=$X86ASM_O
6873 LD_LIB=$LD_LIB
6874 LD_PATH=$LD_PATH
6875 WINDRES=$windres
6876 DEPWINDRES=$dep_cc
6877 DOXYGEN=$doxygen
6878 LDFLAGS=$LDFLAGS
6879 LDEXEFLAGS=$LDEXEFLAGS
6880 LDSOFLAGS=$LDSOFLAGS
6881 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
6882 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
6883 X86ASMFLAGS=$X86ASMFLAGS
6884 BUILDSUF=$build_suffix
6885 PROGSSUF=$progs_suffix
6886 FULLNAME=$FULLNAME
6887 LIBPREF=$LIBPREF
6888 LIBSUF=$LIBSUF
6889 LIBNAME=$LIBNAME
6890 SLIBPREF=$SLIBPREF
6891 SLIBSUF=$SLIBSUF
6892 EXESUF=$EXESUF
6893 EXTRA_VERSION=$extra_version
6894 CCDEP=$CCDEP
6895 CXXDEP=$CXXDEP
6896 CCDEP_FLAGS=$CCDEP_FLAGS
6897 ASDEP=$ASDEP
6898 ASDEP_FLAGS=$ASDEP_FLAGS
6899 X86ASMDEP=$X86ASMDEP
6900 X86ASMDEP_FLAGS=$X86ASMDEP_FLAGS
6901 CC_DEPFLAGS=$CC_DEPFLAGS
6902 AS_DEPFLAGS=$AS_DEPFLAGS
6903 X86ASM_DEPFLAGS=$X86ASM_DEPFLAGS
6904 HOSTCC=$host_cc
6905 HOSTLD=$host_ld
6906 HOSTCFLAGS=$host_cflags
6907 HOSTCPPFLAGS=$host_cppflags
6908 HOSTEXESUF=$HOSTEXESUF
6909 HOSTLDFLAGS=$host_ldflags
6910 HOSTEXTRALIBS=$host_extralibs
6911 DEPHOSTCC=$host_cc
6912 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
6913 HOSTCCDEP=$HOSTCCDEP
6914 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
6915 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
6916 HOSTCC_C=$HOSTCC_C
6917 HOSTCC_O=$HOSTCC_O
6918 HOSTLD_O=$HOSTLD_O
6919 TARGET_EXEC=$target_exec $target_exec_args
6920 TARGET_PATH=$target_path
6921 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
6922 CFLAGS-ffplay=${sdl2_cflags}
6923 CFLAGS_HEADERS=$CFLAGS_HEADERS
6924 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
6925 EXTRALIBS=$extralibs
6926 COMPAT_OBJS=$compat_objs
6927 INSTALL=$install
6928 SLIBNAME=${SLIBNAME}
6929 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
6930 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
6931 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
6932 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
6933 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
6934 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
6935 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
6936 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
6937 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
6938 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
6939 NOREDZONE_FLAGS=$noredzone_flags
6940 LIBFUZZER_PATH=$libfuzzer_path
6941 IGNORE_TESTS=$ignore_tests
6942 EOF
6943
6944 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> ffbuild/config.mak' $LIBRARY_LIST
6945
6946 for entry in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
6947     eval echo "EXTRALIBS-${entry}=\$${entry}_extralibs" >> ffbuild/config.mak
6948 done
6949
6950 cat > $TMPH <<EOF
6951 /* Automatically generated by configure - do not modify! */
6952 #ifndef FFMPEG_CONFIG_H
6953 #define FFMPEG_CONFIG_H
6954 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
6955 #define FFMPEG_LICENSE "$(c_escape $license)"
6956 #define CONFIG_THIS_YEAR 2017
6957 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
6958 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
6959 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
6960 #define av_restrict $_restrict
6961 #define EXTERN_PREFIX "${extern_prefix}"
6962 #define EXTERN_ASM ${extern_prefix}
6963 #define BUILDSUF "$build_suffix"
6964 #define SLIBSUF "$SLIBSUF"
6965 #define HAVE_MMX2 HAVE_MMXEXT
6966 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
6967 EOF
6968
6969 test -n "$assert_level" &&
6970     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
6971
6972 test -n "$malloc_prefix" &&
6973     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
6974
6975 if enabled x86asm; then
6976     append config_files $TMPASM
6977     cat > $TMPASM <<EOF
6978 ; Automatically generated by configure - do not modify!
6979 EOF
6980 fi
6981
6982 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
6983
6984
6985 mkdir -p doc
6986 mkdir -p tests
6987 mkdir -p tests/api
6988 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
6989
6990 print_config ARCH_   "$config_files" $ARCH_LIST
6991 print_config HAVE_   "$config_files" $HAVE_LIST
6992 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
6993                                      $CONFIG_EXTRA      \
6994                                      $ALL_COMPONENTS    \
6995
6996 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
6997 echo "endif # FFMPEG_CONFIG_MAK" >> ffbuild/config.mak
6998
6999 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
7000 cp_if_changed $TMPH config.h
7001 touch ffbuild/.config
7002
7003 enabled x86asm && cp_if_changed $TMPASM config.asm
7004
7005 cat > $TMPH <<EOF
7006 /* Generated by ffmpeg configure */
7007 #ifndef AVUTIL_AVCONFIG_H
7008 #define AVUTIL_AVCONFIG_H
7009 EOF
7010
7011 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
7012
7013 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
7014
7015 cp_if_changed $TMPH libavutil/avconfig.h
7016
7017 # generate the lists of enabled components
7018 print_enabled_components(){
7019     file=$1
7020     struct_name=$2
7021     name=$3
7022     shift 3
7023     echo "static const $struct_name * const $name[] = {" > $TMPH
7024     for c in $*; do
7025         enabled $c && printf "    &ff_%s,\n" $c >> $TMPH
7026     done
7027     echo "    NULL };" >> $TMPH
7028     cp_if_changed $TMPH $file
7029 }
7030
7031 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
7032 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
7033
7034 # Settings for pkg-config files
7035
7036 cat > $TMPH <<EOF
7037 # Automatically generated by configure - do not modify!
7038 shared=$shared
7039 build_suffix=$build_suffix
7040 prefix=$prefix
7041 libdir=$libdir
7042 incdir=$incdir
7043 rpath=$(enabled rpath && echo "-Wl,-rpath,\${libdir}")
7044 source_path=${source_path}
7045 LIBPREF=${LIBPREF}
7046 LIBSUF=${LIBSUF}
7047 extralibs_avutil="$avutil_extralibs"
7048 extralibs_avcodec="$avcodec_extralibs"
7049 extralibs_avformat="$avformat_extralibs"
7050 extralibs_avdevice="$avdevice_extralibs"
7051 extralibs_avfilter="$avfilter_extralibs"
7052 extralibs_avresample="$avresample_extralibs"
7053 extralibs_postproc="$postproc_extralibs"
7054 extralibs_swscale="$swscale_extralibs"
7055 extralibs_swresample="$swresample_extralibs"
7056 EOF
7057
7058 for lib in $LIBRARY_LIST; do
7059     lib_deps="$(eval echo \$${lib}_deps)"
7060     echo ${lib}_deps=\"$lib_deps\" >> $TMPH
7061 done
7062
7063 cp_if_changed $TMPH ffbuild/config.sh