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   --disable-v4l2_m2m       disable V4L2 mem2mem code [autodetect]
 189
 190 External library support:
 191
 192   Using any of the following switches will allow FFmpeg to link to the
 193   corresponding external library. All the components depending on that library
 194   will become enabled, if all their other dependencies are met and they are not
 195   explicitly disabled. E.g. --enable-libwavpack will enable linking to
 196   libwavpack and allow the libwavpack encoder to be built, unless it is
 197   specifically disabled with --disable-encoder=libwavpack.
 198
 199   Note that only the system libraries are auto-detected. All the other external
 200   libraries must be explicitly enabled.
 201
 202   Also note that the following help text describes the purpose of the libraries
 203   themselves, not all their features will necessarily be usable by FFmpeg.
 204
 205   --disable-alsa           disable ALSA support [autodetect]
 206   --disable-appkit         disable Apple AppKit framework [autodetect]
 207   --disable-avfoundation   disable Apple AVFoundation framework [autodetect]
 208   --enable-avisynth        enable reading of AviSynth script files [no]
 209   --disable-bzlib          disable bzlib [autodetect]
 210   --disable-coreimage      disable Apple CoreImage framework [autodetect]
 211   --enable-chromaprint     enable audio fingerprinting with chromaprint [no]
 212   --enable-frei0r          enable frei0r video filtering [no]
 213   --enable-gcrypt          enable gcrypt, needed for rtmp(t)e support
 214                            if openssl, librtmp or gmp is not used [no]
 215   --enable-gmp             enable gmp, needed for rtmp(t)e support
 216                            if openssl or librtmp is not used [no]
 217   --enable-gnutls          enable gnutls, needed for https support
 218                            if openssl is not used [no]
 219   --disable-iconv          disable iconv [autodetect]
 220   --enable-jni             enable JNI support [no]
 221   --enable-ladspa          enable LADSPA audio filtering [no]
 222   --enable-libass          enable libass subtitles rendering,
 223                            needed for subtitles and ass filter [no]
 224   --enable-libbluray       enable BluRay reading using libbluray [no]
 225   --enable-libbs2b         enable bs2b DSP library [no]
 226   --enable-libcaca         enable textual display using libcaca [no]
 227   --enable-libcelt         enable CELT decoding via libcelt [no]
 228   --enable-libcdio         enable audio CD grabbing with libcdio [no]
 229   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 230                            and libraw1394 [no]
 231   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
 232   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
 233   --enable-libfontconfig   enable libfontconfig, useful for drawtext filter [no]
 234   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
 235   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
 236   --enable-libgme          enable Game Music Emu via libgme [no]
 237   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 238   --enable-libiec61883     enable iec61883 via libiec61883 [no]
 239   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 240   --enable-libjack         enable JACK audio sound server [no]
 241   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
 242   --enable-libmodplug      enable ModPlug via libmodplug [no]
 243   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 244   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 245   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 246   --enable-libopencv       enable video filtering via libopencv [no]
 247   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
 248   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 249   --enable-libopenmpt      enable decoding tracked files via libopenmpt [no]
 250   --enable-libopus         enable Opus de/encoding via libopus [no]
 251   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 252   --enable-librsvg         enable SVG rasterization via librsvg [no]
 253   --enable-librubberband   enable rubberband needed for rubberband filter [no]
 254   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 255   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 256   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
 257   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
 258   --enable-libsoxr         enable Include libsoxr resampling [no]
 259   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 260   --enable-libssh          enable SFTP protocol via libssh [no]
 261   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
 262   --enable-libtheora       enable Theora encoding via libtheora [no]
 263   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 264   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 265   --enable-libvidstab      enable video stabilization using vid.stab [no]
 266   --enable-libvmaf         enable vmaf filter via libvmaf [no]
 267   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 268   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 269                            native implementation exists [no]
 270   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 271   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 272   --enable-libwebp         enable WebP encoding via libwebp [no]
 273   --enable-libx264         enable H.264 encoding via x264 [no]
 274   --enable-libx265         enable HEVC encoding via x265 [no]
 275   --enable-libxavs         enable AVS encoding via xavs [no]
 276   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
 277   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
 278   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
 279   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
 280   --enable-libxvid         enable Xvid encoding via xvidcore,
 281                            native MPEG-4/Xvid encoder exists [no]
 282   --enable-libxml2         enable XML parsing using the C library libxml2 [no]
 283   --enable-libzimg         enable z.lib, needed for zscale filter [no]
 284   --enable-libzmq          enable message passing via libzmq [no]
 285   --enable-libzvbi         enable teletext support via libzvbi [no]
 286   --enable-lv2             enable LV2 audio filtering [no]
 287   --disable-lzma           disable lzma [autodetect]
 288   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
 289   --enable-libndi_newtek   enable Newteck NDI I/O support [no]
 290   --enable-mediacodec      enable Android MediaCodec support [no]
 291   --enable-libmysofa       enable libmysofa, needed for sofalizer filter [no]
 292   --enable-openal          enable OpenAL 1.1 capture support [no]
 293   --enable-opencl          enable OpenCL processing [no]
 294   --enable-opengl          enable OpenGL rendering [no]
 295   --enable-openssl         enable openssl, needed for https support
 296                            if gnutls is not used [no]
 297   --disable-sndio          disable sndio support [autodetect]
 298   --disable-schannel       disable SChannel SSP, needed for TLS support on
 299                            Windows if openssl and gnutls are not used [autodetect]
 300   --disable-sdl2           disable sdl2 [autodetect]
 301   --disable-securetransport disable Secure Transport, needed for TLS support
 302                            on OSX if openssl and gnutls are not used [autodetect]
 303   --disable-xlib           disable xlib [autodetect]
 304   --disable-zlib           disable zlib [autodetect]
 305
 306   The following libraries provide various hardware acceleration features:
 307   --disable-audiotoolbox   disable Apple AudioToolbox code [autodetect]
 308   --disable-cuda           disable dynamically linked Nvidia CUDA code [autodetect]
 309   --enable-cuda-sdk        enable CUDA features that require the CUDA SDK [no]
 310   --disable-cuvid          disable Nvidia CUVID support [autodetect]
 311   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
 312   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
 313   --enable-libdrm          enable DRM code (Linux) [no]
 314   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
 315   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
 316   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
 317   --disable-nvdec          disable Nvidia video decoding acceleration (via hwaccel) [autodetect]
 318   --disable-nvenc          disable Nvidia video encoding code [autodetect]
 319   --enable-omx             enable OpenMAX IL code [no]
 320   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
 321   --enable-rkmpp           enable Rockchip Media Process Platform code [no]
 322   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
 323   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
 324   --disable-videotoolbox   disable VideoToolbox code [autodetect]
 325
 326 Toolchain options:
 327   --arch=ARCH              select architecture [$arch]
 328   --cpu=CPU                select the minimum required CPU (affects
 329                            instruction selection, may crash on older CPUs)
 330   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 331   --progs-suffix=SUFFIX    program name suffix []
 332   --enable-cross-compile   assume a cross-compiler is used
 333   --sysroot=PATH           root of cross-build tree
 334   --sysinclude=PATH        location of cross-build system headers
 335   --target-os=OS           compiler targets OS [$target_os]
 336   --target-exec=CMD        command to run executables on target
 337   --target-path=DIR        path to view of build directory on target
 338   --target-samples=DIR     path to samples directory on target
 339   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 340   --toolchain=NAME         set tool defaults according to NAME
 341   --nm=NM                  use nm tool NM [$nm_default]
 342   --ar=AR                  use archive tool AR [$ar_default]
 343   --as=AS                  use assembler AS [$as_default]
 344   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
 345   --strip=STRIP            use strip tool STRIP [$strip_default]
 346   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 347   --x86asmexe=EXE          use nasm-compatible assembler EXE [$x86asmexe_default]
 348   --cc=CC                  use C compiler CC [$cc_default]
 349   --cxx=CXX                use C compiler CXX [$cxx_default]
 350   --objcc=OCC              use ObjC compiler OCC [$cc_default]
 351   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 352   --nvcc=NVCC              use Nvidia CUDA compiler NVCC [$nvcc_default]
 353   --ld=LD                  use linker LD [$ld_default]
 354   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 355   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 356   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 357   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
 358   --host-cc=HOSTCC         use host C compiler HOSTCC
 359   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 360   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 361   --host-ld=HOSTLD         use host linker HOSTLD
 362   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 363   --host-libs=HLIBS        use libs HLIBS when linking for host
 364   --host-os=OS             compiler host OS [$target_os]
 365   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 366   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 367   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
 368   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 369   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 370   --extra-ldsoflags=ELDFLAGS add ELDFLAGS to LDSOFLAGS [$LDSOFLAGS]
 371   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 372   --extra-version=STRING   version string suffix []
 373   --optflags=OPTFLAGS      override optimization-related compiler flags
 374   --nvccflags=NVCCFLAGS    override nvcc flags [$nvccflags_default]
 375   --build-suffix=SUFFIX    library name suffix []
 376   --enable-pic             build position-independent code
 377   --enable-thumb           compile for Thumb instruction set
 378   --enable-lto             use link-time optimization
 379   --env="ENV=override"     override the environment variables
 380
 381 Advanced options (experts only):
 382   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 383   --custom-allocator=NAME  use a supported custom allocator
 384   --disable-symver         disable symbol versioning
 385   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 386   --disable-safe-bitstream-reader
 387                            disable buffer boundary checking in bitreaders
 388                            (faster, but may crash)
 389   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
 390
 391 Optimization options (experts only):
 392   --disable-asm            disable all assembly optimizations
 393   --disable-altivec        disable AltiVec optimizations
 394   --disable-vsx            disable VSX optimizations
 395   --disable-power8         disable POWER8 optimizations
 396   --disable-amd3dnow       disable 3DNow! optimizations
 397   --disable-amd3dnowext    disable 3DNow! extended optimizations
 398   --disable-mmx            disable MMX optimizations
 399   --disable-mmxext         disable MMXEXT optimizations
 400   --disable-sse            disable SSE optimizations
 401   --disable-sse2           disable SSE2 optimizations
 402   --disable-sse3           disable SSE3 optimizations
 403   --disable-ssse3          disable SSSE3 optimizations
 404   --disable-sse4           disable SSE4 optimizations
 405   --disable-sse42          disable SSE4.2 optimizations
 406   --disable-avx            disable AVX optimizations
 407   --disable-xop            disable XOP optimizations
 408   --disable-fma3           disable FMA3 optimizations
 409   --disable-fma4           disable FMA4 optimizations
 410   --disable-avx2           disable AVX2 optimizations
 411   --disable-aesni          disable AESNI optimizations
 412   --disable-armv5te        disable armv5te optimizations
 413   --disable-armv6          disable armv6 optimizations
 414   --disable-armv6t2        disable armv6t2 optimizations
 415   --disable-vfp            disable VFP optimizations
 416   --disable-neon           disable NEON optimizations
 417   --disable-inline-asm     disable use of inline assembly
 418   --disable-x86asm         disable use of standalone x86 assembly
 419   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
 420   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 421   --disable-msa            disable MSA optimizations
 422   --disable-mipsfpu        disable floating point MIPS optimizations
 423   --disable-mmi            disable Loongson SIMD optimizations
 424   --disable-fast-unaligned consider unaligned accesses slow
 425
 426 Developer options (useful when working on FFmpeg itself):
 427   --disable-debug          disable debugging symbols
 428   --enable-debug=LEVEL     set the debug level [$debuglevel]
 429   --disable-optimizations  disable compiler optimizations
 430   --enable-extra-warnings  enable more compiler warnings
 431   --disable-stripping      disable stripping of executables and shared libraries
 432   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 433                            2 causes a slowdown at runtime.
 434   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 435   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 436                            leaks and errors, using the specified valgrind binary.
 437                            Cannot be combined with --target-exec
 438   --enable-ftrapv          Trap arithmetic overflows
 439   --samples=PATH           location of test samples for FATE, if not set use
 440                            \$FATE_SAMPLES at make invocation time.
 441   --enable-neon-clobber-test check NEON registers for clobbering (should be
 442                            used only for debugging purposes)
 443   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 444                            should be used only for debugging purposes)
 445   --enable-random          randomly enable/disable components
 446   --disable-random
 447   --enable-random=LIST     randomly enable/disable specific components or
 448   --disable-random=LIST    component groups. LIST is a comma-separated list
 449                            of NAME[:PROB] entries where NAME is a component
 450                            (group) and PROB the probability associated with
 451                            NAME (default 0.5).
 452   --random-seed=VALUE      seed value for --enable/disable-random
 453   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 454                            (only applies to --disable-optimizations builds)
 455   --enable-osfuzz          Enable building fuzzer tool
 456   --libfuzzer=PATH         path to libfuzzer
 457   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
 458                            in the name) of tests whose result is ignored
 459   --enable-linux-perf      enable Linux Performance Monitor API
 460
 461 NOTE: Object files are built at the place where configure is launched.
 462 EOF
 463   exit 0
 464 }
 465
 466 if test -t 1 && which tput >/dev/null 2>&1; then
 467     ncolors=$(tput colors)
 468     if test -n "$ncolors" && test $ncolors -ge 8; then
 469         bold_color=$(tput bold)
 470         warn_color=$(tput setaf 3)
 471         error_color=$(tput setaf 1)
 472         reset_color=$(tput sgr0)
 473     fi
 474     # 72 used instead of 80 since that's the default of pr
 475     ncols=$(tput cols)
 476 fi
 477 : ${ncols:=72}
 478
 479 log(){
 480     echo "$@" >> $logfile
 481 }
 482
 483 log_file(){
 484     log BEGIN $1
 485     pr -n -t $1 >> $logfile
 486     log END $1
 487 }
 488
 489 warn(){
 490     log "WARNING: $*"
 491     WARNINGS="${WARNINGS}WARNING: $*\n"
 492 }
 493
 494 die(){
 495     log "$@"
 496     echo "$error_color$bold_color$@$reset_color"
 497     cat <<EOF
 498
 499 If you think configure made a mistake, make sure you are using the latest
 500 version from Git.  If the latest version fails, report the problem to the
 501 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 502 EOF
 503     if disabled logging; then
 504         cat <<EOF
 505 Rerun configure with logging enabled (do not use --disable-logging), and
 506 include the log this produces with your report.
 507 EOF
 508     else
 509         cat <<EOF
 510 Include the log file "$logfile" produced by configure as this will help
 511 solve the problem.
 512 EOF
 513     fi
 514     exit 1
 515 }
 516
 517 # Avoid locale weirdness, besides we really just want to translate ASCII.
 518 toupper(){
 519     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 520 }
 521
 522 tolower(){
 523     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 524 }
 525
 526 c_escape(){
 527     echo "$*" | sed 's/["\\]/\\\0/g'
 528 }
 529
 530 sh_quote(){
 531     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 532     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 533     echo "$v"
 534 }
 535
 536 cleanws(){
 537     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
 538 }
 539
 540 filter(){
 541     pat=$1
 542     shift
 543     for v; do
 544         eval "case '$v' in $pat) printf '%s ' '$v' ;; esac"
 545     done
 546 }
 547
 548 filter_out(){
 549     pat=$1
 550     shift
 551     for v; do
 552         eval "case '$v' in $pat) ;; *) printf '%s ' '$v' ;; esac"
 553     done
 554 }
 555
 556 map(){
 557     m=$1
 558     shift
 559     for v; do eval $m; done
 560 }
 561
 562 add_suffix(){
 563     suffix=$1
 564     shift
 565     for v; do echo ${v}${suffix}; done
 566 }
 567
 568 set_all(){
 569     value=$1
 570     shift
 571     for var in $*; do
 572         eval $var=$value
 573     done
 574 }
 575
 576 set_weak(){
 577     value=$1
 578     shift
 579     for var; do
 580         eval : \${$var:=$value}
 581     done
 582 }
 583
 584 sanitize_var_name(){
 585     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 586 }
 587
 588 set_sanitized(){
 589     var=$1
 590     shift
 591     eval $(sanitize_var_name "$var")='$*'
 592 }
 593
 594 get_sanitized(){
 595     eval echo \$$(sanitize_var_name "$1")
 596 }
 597
 598 pushvar(){
 599     for pvar in $*; do
 600         eval level=\${${pvar}_level:=0}
 601         eval ${pvar}_${level}="\$$pvar"
 602         eval ${pvar}_level=$(($level+1))
 603     done
 604 }
 605
 606 popvar(){
 607     for pvar in $*; do
 608         eval level=\${${pvar}_level:-0}
 609         test $level = 0 && continue
 610         eval level=$(($level-1))
 611         eval $pvar="\${${pvar}_${level}}"
 612         eval ${pvar}_level=$level
 613         eval unset ${pvar}_${level}
 614     done
 615 }
 616
 617 request(){
 618     for var in $*; do
 619         eval ${var}_requested=yes
 620         eval $var=
 621     done
 622 }
 623
 624 enable(){
 625     set_all yes $*
 626 }
 627
 628 disable(){
 629     set_all no $*
 630 }
 631
 632 enable_weak(){
 633     set_weak yes $*
 634 }
 635
 636 disable_weak(){
 637     set_weak no $*
 638 }
 639
 640 enable_sanitized(){
 641     for var; do
 642         enable $(sanitize_var_name $var)
 643     done
 644 }
 645
 646 disable_sanitized(){
 647     for var; do
 648         disable $(sanitize_var_name $var)
 649     done
 650 }
 651
 652 do_enable_deep(){
 653     for var; do
 654         enabled $var && continue
 655         eval sel="\$${var}_select"
 656         eval sgs="\$${var}_suggest"
 657         pushvar var sgs
 658         enable_deep $sel
 659         popvar sgs
 660         enable_deep_weak $sgs
 661         popvar var
 662     done
 663 }
 664
 665 enable_deep(){
 666     do_enable_deep $*
 667     enable $*
 668 }
 669
 670 enable_deep_weak(){
 671     for var; do
 672         disabled $var && continue
 673         pushvar var
 674         do_enable_deep $var
 675         popvar var
 676         enable_weak $var
 677     done
 678 }
 679
 680 requested(){
 681     test "${1#!}" = "$1" && op="=" || op="!="
 682     eval test "x\$${1#!}_requested" $op "xyes"
 683 }
 684
 685 enabled(){
 686     test "${1#!}" = "$1" && op="=" || op="!="
 687     eval test "x\$${1#!}" $op "xyes"
 688 }
 689
 690 disabled(){
 691     test "${1#!}" = "$1" && op="=" || op="!="
 692     eval test "x\$${1#!}" $op "xno"
 693 }
 694
 695 enabled_all(){
 696     for opt; do
 697         enabled $opt || return 1
 698     done
 699 }
 700
 701 disabled_all(){
 702     for opt; do
 703         disabled $opt || return 1
 704     done
 705 }
 706
 707 enabled_any(){
 708     for opt; do
 709         enabled $opt && return 0
 710     done
 711 }
 712
 713 disabled_any(){
 714     for opt; do
 715         disabled $opt && return 0
 716     done
 717     return 1
 718 }
 719
 720 set_default(){
 721     for opt; do
 722         eval : \${$opt:=\$${opt}_default}
 723     done
 724 }
 725
 726 is_in(){
 727     value=$1
 728     shift
 729     for var in $*; do
 730         [ $var = $value ] && return 0
 731     done
 732     return 1
 733 }
 734
 735 check_deps(){
 736     for cfg; do
 737         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 738         disabled ${cfg}_checking && continue
 739         enable ${cfg}_checking
 740
 741         eval dep_all="\$${cfg}_deps"
 742         eval dep_any="\$${cfg}_deps_any"
 743         eval dep_con="\$${cfg}_conflict"
 744         eval dep_sel="\$${cfg}_select"
 745         eval dep_sgs="\$${cfg}_suggest"
 746         eval dep_ifa="\$${cfg}_if"
 747         eval dep_ifn="\$${cfg}_if_any"
 748
 749         pushvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
 750         check_deps $dep_all $dep_any $dep_con $dep_sel $dep_sgs $dep_ifa $dep_ifn
 751         popvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
 752
 753         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 754         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 755         enabled_all  $dep_all || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not all dependencies are satisfied: $dep_all"; }
 756         enabled_any  $dep_any || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not any dependency is satisfied: $dep_any"; }
 757         disabled_all $dep_con || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some conflicting dependencies are unsatisfied: $dep_con"; }
 758         disabled_any $dep_sel && { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some selected dependency is unsatisfied: $dep_sel"; }
 759
 760         enabled $cfg && enable_deep_weak $dep_sel $dep_sgs
 761
 762         for dep in $dep_all $dep_any $dep_sel $dep_sgs; do
 763             # filter out library deps, these do not belong in extralibs
 764             is_in $dep $LIBRARY_LIST && continue
 765             enabled $dep && eval append ${cfg}_extralibs ${dep}_extralibs
 766         done
 767
 768         disable ${cfg}_checking
 769     done
 770 }
 771
 772 print_config(){
 773     pfx=$1
 774     files=$2
 775     shift 2
 776     map 'eval echo "$v \${$v:-no}"' "$@" |
 777     awk "BEGIN { split(\"$files\", files) }
 778         {
 779             c = \"$pfx\" toupper(\$1);
 780             v = \$2;
 781             sub(/yes/, 1, v);
 782             sub(/no/,  0, v);
 783             for (f in files) {
 784                 file = files[f];
 785                 if (file ~ /\\.h\$/) {
 786                     printf(\"#define %s %d\\n\", c, v) >>file;
 787                 } else if (file ~ /\\.asm\$/) {
 788                     printf(\"%%define %s %d\\n\", c, v) >>file;
 789                 } else if (file ~ /\\.mak\$/) {
 790                     n = -v ? \"\" : \"!\";
 791                     printf(\"%s%s=yes\\n\", n, c) >>file;
 792                 } else if (file ~ /\\.texi\$/) {
 793                     pre = -v ? \"\" : \"@c \";
 794                     yesno = \$2;
 795                     c2 = tolower(c);
 796                     gsub(/_/, \"-\", c2);
 797                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 798                 }
 799             }
 800         }"
 801 }
 802
 803 print_enabled(){
 804     suf=$1
 805     shift
 806     for v; do
 807         enabled $v && printf "%s\n" ${v%$suf}
 808     done
 809 }
 810
 811 append(){
 812     var=$1
 813     shift
 814     eval "$var=\"\$$var $*\""
 815 }
 816
 817 prepend(){
 818     var=$1
 819     shift
 820     eval "$var=\"$* \$$var\""
 821 }
 822
 823 unique(){
 824     var=$1
 825     uniq_list=""
 826     for tok in $(eval echo \$$var); do
 827         uniq_list="$(filter_out $tok $uniq_list) $tok"
 828     done
 829     eval "$var=\"${uniq_list}\""
 830 }
 831
 832 resolve(){
 833     var=$1
 834     tmpvar=
 835     for entry in $(eval echo \$$var); do
 836         tmpvar="$tmpvar $(eval echo \$${entry})"
 837     done
 838     eval "$var=\"${tmpvar}\""
 839 }
 840
 841 add_cppflags(){
 842     append CPPFLAGS "$@"
 843 }
 844
 845 add_cflags(){
 846     append CFLAGS $($cflags_filter "$@")
 847 }
 848
 849 add_cflags_headers(){
 850     append CFLAGS_HEADERS $($cflags_filter "$@")
 851 }
 852
 853 add_cxxflags(){
 854     append CXXFLAGS $($cflags_filter "$@")
 855 }
 856
 857 add_asflags(){
 858     append ASFLAGS $($asflags_filter "$@")
 859 }
 860
 861 add_objcflags(){
 862     append OBJCFLAGS $($objcflags_filter "$@")
 863 }
 864
 865 add_ldflags(){
 866     append LDFLAGS $($ldflags_filter "$@")
 867 }
 868
 869 add_ldexeflags(){
 870     append LDEXEFLAGS $($ldflags_filter "$@")
 871 }
 872
 873 add_ldsoflags(){
 874     append LDSOFLAGS $($ldflags_filter "$@")
 875 }
 876
 877 add_stripflags(){
 878     append ASMSTRIPFLAGS "$@"
 879 }
 880
 881 add_extralibs(){
 882     prepend extralibs $($ldflags_filter "$@")
 883 }
 884
 885 add_host_cppflags(){
 886     append host_cppflags "$@"
 887 }
 888
 889 add_host_cflags(){
 890     append host_cflags $($host_cflags_filter "$@")
 891 }
 892
 893 add_host_ldflags(){
 894     append host_ldflags $($host_ldflags_filter "$@")
 895 }
 896
 897 add_compat(){
 898     append compat_objs $1
 899     shift
 900     map 'add_cppflags -D$v' "$@"
 901 }
 902
 903 check_cmd(){
 904     log "$@"
 905     "$@" >> $logfile 2>&1
 906 }
 907
 908 check_stat(){
 909     log check_stat "$@"
 910     stat "$1" >> $logfile 2>&1
 911 }
 912
 913 cc_o(){
 914     eval printf '%s\\n' $CC_O
 915 }
 916
 917 cc_e(){
 918     eval printf '%s\\n' $CC_E
 919 }
 920
 921 check_cc(){
 922     log check_cc "$@"
 923     cat > $TMPC
 924     log_file $TMPC
 925     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 926 }
 927
 928 check_cxx(){
 929     log check_cxx "$@"
 930     cat > $TMPCPP
 931     log_file $TMPCPP
 932     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
 933 }
 934
 935 check_objcc(){
 936     log check_objcc "$@"
 937     cat > $TMPM
 938     log_file $TMPM
 939     check_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
 940 }
 941
 942 check_cpp(){
 943     log check_cpp "$@"
 944     cat > $TMPC
 945     log_file $TMPC
 946     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 947 }
 948
 949 as_o(){
 950     eval printf '%s\\n' $AS_O
 951 }
 952
 953 check_as(){
 954     log check_as "$@"
 955     cat > $TMPS
 956     log_file $TMPS
 957     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 958 }
 959
 960 check_inline_asm(){
 961     log check_inline_asm "$@"
 962     name="$1"
 963     code="$2"
 964     shift 2
 965     disable $name
 966     check_cc "$@" <<EOF && enable $name
 967 void foo(void){ __asm__ volatile($code); }
 968 EOF
 969 }
 970
 971 check_inline_asm_flags(){
 972     log check_inline_asm_flags "$@"
 973     name="$1"
 974     code="$2"
 975     flags=''
 976     shift 2
 977     while [ "$1" != "" ]; do
 978       append flags $1
 979       shift
 980     done;
 981     disable $name
 982     cat > $TMPC <<EOF
 983 void foo(void){ __asm__ volatile($code); }
 984 EOF
 985     log_file $TMPC
 986     check_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
 987     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
 988 }
 989
 990 check_insn(){
 991     log check_insn "$@"
 992     check_inline_asm ${1}_inline "\"$2\""
 993     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 994 }
 995
 996 check_x86asm(){
 997     log check_x86asm "$@"
 998     echo "$1" > $TMPS
 999     log_file $TMPS
1000     shift 1
1001     check_cmd $x86asmexe $X86ASMFLAGS -Werror "$@" -o $TMPO $TMPS
1002 }
1003
1004 ld_o(){
1005     eval printf '%s\\n' $LD_O
1006 }
1007
1008 check_ld(){
1009     log check_ld "$@"
1010     type=$1
1011     shift 1
1012     flags=$(filter_out '-l*|*.so' $@)
1013     libs=$(filter '-l*|*.so' $@)
1014     check_$type $($cflags_filter $flags) || return
1015     flags=$($ldflags_filter $flags)
1016     libs=$($ldflags_filter $libs)
1017     check_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
1018 }
1019
1020 print_include(){
1021     hdr=$1
1022     test "${hdr%.h}" = "${hdr}" &&
1023         echo "#include $hdr"    ||
1024         echo "#include <$hdr>"
1025 }
1026
1027 check_code(){
1028     log check_code "$@"
1029     check=$1
1030     headers=$2
1031     code=$3
1032     shift 3
1033     {
1034         for hdr in $headers; do
1035             print_include $hdr
1036         done
1037         echo "int main(void) { $code; return 0; }"
1038     } | check_$check "$@"
1039 }
1040
1041 check_cppflags(){
1042     log check_cppflags "$@"
1043     check_cpp "$@" <<EOF && append CPPFLAGS "$@"
1044 #include <stdlib.h>
1045 EOF
1046 }
1047
1048 test_cflags(){
1049     log test_cflags "$@"
1050     set -- $($cflags_filter "$@")
1051     check_cc "$@" <<EOF
1052 int x;
1053 EOF
1054 }
1055
1056 check_cflags(){
1057     log check_cflags "$@"
1058     test_cflags "$@" && add_cflags "$@"
1059 }
1060
1061 check_cxxflags(){
1062     log check_cxxflags "$@"
1063     set -- $($cflags_filter "$@")
1064     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
1065 int x;
1066 EOF
1067 }
1068
1069 test_objcflags(){
1070     log test_objcflags "$@"
1071     set -- $($objcflags_filter "$@")
1072     check_objcc "$@" <<EOF
1073 int x;
1074 EOF
1075 }
1076
1077 check_objcflags(){
1078     log check_objcflags "$@"
1079     test_objcflags "$@" && add_objcflags "$@"
1080 }
1081
1082 test_ldflags(){
1083     log test_ldflags "$@"
1084     set -- $($ldflags_filter "$@")
1085     check_ld "cc" "$@" <<EOF
1086 int main(void){ return 0; }
1087 EOF
1088 }
1089
1090 check_ldflags(){
1091     log check_ldflags "$@"
1092     test_ldflags "$@" && add_ldflags "$@"
1093 }
1094
1095 test_stripflags(){
1096     log test_stripflags "$@"
1097     # call check_cc to get a fresh TMPO
1098     check_cc <<EOF
1099 int main(void) { return 0; }
1100 EOF
1101     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1102 }
1103
1104 check_stripflags(){
1105     log check_stripflags "$@"
1106     test_stripflags "$@" && add_stripflags "$@"
1107 }
1108
1109 check_header(){
1110     log check_header "$@"
1111     headers=$1
1112     shift
1113     disable_sanitized $headers
1114     {
1115         for hdr in $headers; do
1116             print_include $hdr
1117         done
1118         echo "int x;"
1119     } | check_cpp "$@" && enable_sanitized $headers
1120 }
1121
1122 check_header_objcc(){
1123     log check_header_objcc "$@"
1124     rm -f -- "$TMPO"
1125     header=$1
1126     shift
1127     disable_sanitized $header
1128     {
1129        echo "#include <$header>"
1130        echo "int main(void) { return 0; }"
1131     } | check_objcc && check_stat "$TMPO" && enable_sanitized $header
1132 }
1133
1134 check_apple_framework(){
1135     log check_apple_framework "$@"
1136     framework="$1"
1137     name="$(tolower $framework)"
1138     header="${framework}/${framework}.h"
1139     disable $name
1140     check_header_objcc $header &&
1141         enable $name && eval ${name}_extralibs='"-framework $framework"'
1142 }
1143
1144 check_func(){
1145     log check_func "$@"
1146     func=$1
1147     shift
1148     disable $func
1149     check_ld "cc" "$@" <<EOF && enable $func
1150 extern int $func();
1151 int main(void){ $func(); }
1152 EOF
1153 }
1154
1155 check_complexfunc(){
1156     log check_complexfunc "$@"
1157     func=$1
1158     narg=$2
1159     shift 2
1160     test $narg = 2 && args="f, g" || args="f * I"
1161     disable $func
1162     check_ld "cc" "$@" <<EOF && enable $func
1163 #include <complex.h>
1164 #include <math.h>
1165 float foo(complex float f, complex float g) { return $func($args); }
1166 int main(void){ return (int) foo; }
1167 EOF
1168 }
1169
1170 check_mathfunc(){
1171     log check_mathfunc "$@"
1172     func=$1
1173     narg=$2
1174     shift 2
1175     test $narg = 2 && args="f, g" || args="f"
1176     disable $func
1177     check_ld "cc" "$@" <<EOF && enable $func
1178 #include <math.h>
1179 float foo(float f, float g) { return $func($args); }
1180 int main(void){ return (int) foo; }
1181 EOF
1182 }
1183
1184 check_func_headers(){
1185     log check_func_headers "$@"
1186     headers=$1
1187     funcs=$2
1188     shift 2
1189     {
1190         for hdr in $headers; do
1191             print_include $hdr
1192         done
1193         echo "#include <stdint.h>"
1194         for func in $funcs; do
1195             echo "long check_$func(void) { return (long) $func; }"
1196         done
1197         echo "int main(void) { int ret = 0;"
1198         # LTO could optimize out the test functions without this
1199         for func in $funcs; do
1200             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1201         done
1202         echo "return ret; }"
1203     } | check_ld "cc" "$@" && enable $funcs && enable_sanitized $headers
1204 }
1205
1206 check_class_headers_cpp(){
1207     log check_class_headers_cpp "$@"
1208     headers=$1
1209     classes=$2
1210     shift 2
1211     {
1212         for hdr in $headers; do
1213             echo "#include <$hdr>"
1214         done
1215         echo "int main(void) { "
1216         i=1
1217         for class in $classes; do
1218             echo "$class obj$i;"
1219             i=$(expr $i + 1)
1220         done
1221         echo "return 0; }"
1222     } | check_ld "cxx" "$@" && enable $funcs && enable_sanitized $headers
1223 }
1224
1225 check_cpp_condition(){
1226     log check_cpp_condition "$@"
1227     header=$1
1228     condition=$2
1229     shift 2
1230     check_cpp "$@" <<EOF
1231 #include <$header>
1232 #if !($condition)
1233 #error "unsatisfied condition: $condition"
1234 #endif
1235 EOF
1236 }
1237
1238 test_cflags_cc(){
1239     log test_cflags_cc "$@"
1240     flags=$1
1241     header=$2
1242     condition=$3
1243     shift 3
1244     set -- $($cflags_filter "$flags")
1245     check_cc "$@" <<EOF
1246 #include <$header>
1247 #if !($condition)
1248 #error "unsatisfied condition: $condition"
1249 #endif
1250 EOF
1251 }
1252
1253 check_lib(){
1254     log check_lib "$@"
1255     name="$1"
1256     headers="$2"
1257     funcs="$3"
1258     shift 3
1259     disable $name
1260     check_func_headers "$headers" "$funcs" "$@" &&
1261         enable $name && eval ${name}_extralibs="\$@"
1262 }
1263
1264 check_lib_cpp(){
1265     log check_lib_cpp "$@"
1266     name="$1"
1267     headers="$2"
1268     classes="$3"
1269     shift 3
1270     disable $name
1271     check_class_headers_cpp "$headers" "$classes" "$@" &&
1272         enable $name && eval ${name}_extralibs="\$@"
1273 }
1274
1275 test_pkg_config(){
1276     log test_pkg_config "$@"
1277     name="$1"
1278     pkg_version="$2"
1279     pkg="${2%% *}"
1280     headers="$3"
1281     funcs="$4"
1282     shift 4
1283     disable $name
1284     check_cmd $pkg_config --exists --print-errors $pkg_version || return
1285     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1286     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1287     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1288         enable $name &&
1289         set_sanitized "${name}_cflags"    $pkg_cflags &&
1290         set_sanitized "${name}_extralibs" $pkg_libs
1291 }
1292
1293 check_pkg_config(){
1294     log check_pkg_config "$@"
1295     name="$1"
1296     test_pkg_config "$@" &&
1297         eval add_cflags \$${name}_cflags
1298 }
1299
1300 check_exec(){
1301     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1302 }
1303
1304 check_exec_crash(){
1305     log check_exec_crash "$@"
1306     code=$(cat)
1307
1308     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1309     # are safe but may not be available everywhere.  Thus we use
1310     # raise(SIGTERM) instead.  The check is run in a subshell so we
1311     # can redirect the "Terminated" message from the shell.  SIGBUS
1312     # is not defined by standard C so it is used conditionally.
1313
1314     (check_exec "$@") >> $logfile 2>&1 <<EOF
1315 #include <signal.h>
1316 static void sighandler(int sig){
1317     raise(SIGTERM);
1318 }
1319 int foo(void){
1320     $code
1321 }
1322 int (*func_ptr)(void) = foo;
1323 int main(void){
1324     signal(SIGILL, sighandler);
1325     signal(SIGFPE, sighandler);
1326     signal(SIGSEGV, sighandler);
1327 #ifdef SIGBUS
1328     signal(SIGBUS, sighandler);
1329 #endif
1330     return func_ptr();
1331 }
1332 EOF
1333 }
1334
1335 check_type(){
1336     log check_type "$@"
1337     headers=$1
1338     type=$2
1339     shift 2
1340     disable_sanitized "$type"
1341     check_code cc "$headers" "$type v" "$@" && enable_sanitized "$type"
1342 }
1343
1344 check_struct(){
1345     log check_struct "$@"
1346     headers=$1
1347     struct=$2
1348     member=$3
1349     shift 3
1350     disable_sanitized "${struct}_${member}"
1351     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1352         enable_sanitized "${struct}_${member}"
1353 }
1354
1355 check_builtin(){
1356     log check_builtin "$@"
1357     name=$1
1358     headers=$2
1359     builtin=$3
1360     shift 3
1361     disable "$name"
1362     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1363 }
1364
1365 check_compile_assert(){
1366     log check_compile_assert "$@"
1367     name=$1
1368     headers=$2
1369     condition=$3
1370     shift 3
1371     disable "$name"
1372     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1373 }
1374
1375 require(){
1376     log require "$@"
1377     name_version="$1"
1378     name="${1%% *}"
1379     headers="$2"
1380     func="$3"
1381     shift 3
1382     check_lib $name "$headers" $func "$@" || die "ERROR: $name_version not found"
1383 }
1384
1385 require_cpp(){
1386     name="$1"
1387     headers="$2"
1388     classes="$3"
1389     shift 3
1390     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1391 }
1392
1393 require_header(){
1394     log require_header "$@"
1395     headers="$1"
1396     shift
1397     check_header "$headers" "$@" || die "ERROR: $headers not found"
1398 }
1399
1400 require_cpp_condition(){
1401     log require_cpp_condition "$@"
1402     header="$1"
1403     condition="$2"
1404     shift 2
1405     check_cpp_condition "$header" "$condition" "$@" || die "ERROR: $condition not satisfied"
1406 }
1407
1408 require_pkg_config(){
1409     log require_pkg_config "$@"
1410     pkg_version="$2"
1411     check_pkg_config "$@" || die "ERROR: $pkg_version not found using pkg-config$pkg_config_fail_message"
1412 }
1413
1414 hostcc_e(){
1415     eval printf '%s\\n' $HOSTCC_E
1416 }
1417
1418 hostcc_o(){
1419     eval printf '%s\\n' $HOSTCC_O
1420 }
1421
1422 check_host_cc(){
1423     log check_host_cc "$@"
1424     cat > $TMPC
1425     log_file $TMPC
1426     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1427 }
1428
1429 check_host_cpp(){
1430     log check_host_cpp "$@"
1431     cat > $TMPC
1432     log_file $TMPC
1433     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1434 }
1435
1436 check_host_cppflags(){
1437     log check_host_cppflags "$@"
1438     check_host_cpp "$@" <<EOF && append host_cppflags "$@"
1439 #include <stdlib.h>
1440 EOF
1441 }
1442
1443 check_host_cflags(){
1444     log check_host_cflags "$@"
1445     set -- $($host_cflags_filter "$@")
1446     check_host_cc "$@" <<EOF && append host_cflags "$@"
1447 int x;
1448 EOF
1449 }
1450
1451 check_host_cpp_condition(){
1452     log check_host_cpp_condition "$@"
1453     header=$1
1454     condition=$2
1455     shift 2
1456     check_host_cpp "$@" <<EOF
1457 #include <$header>
1458 #if !($condition)
1459 #error "unsatisfied condition: $condition"
1460 #endif
1461 EOF
1462 }
1463
1464 cp_if_changed(){
1465     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1466     mkdir -p "$(dirname $2)"
1467     cp -f "$1" "$2"
1468 }
1469
1470 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1471 # system-dependent things.
1472
1473 AVCODEC_COMPONENTS="
1474     bsfs
1475     decoders
1476     encoders
1477     hwaccels
1478     parsers
1479 "
1480
1481 AVDEVICE_COMPONENTS="
1482     indevs
1483     outdevs
1484 "
1485
1486 AVFILTER_COMPONENTS="
1487     filters
1488 "
1489
1490 AVFORMAT_COMPONENTS="
1491     demuxers
1492     muxers
1493     protocols
1494 "
1495
1496 COMPONENT_LIST="
1497     $AVCODEC_COMPONENTS
1498     $AVDEVICE_COMPONENTS
1499     $AVFILTER_COMPONENTS
1500     $AVFORMAT_COMPONENTS
1501 "
1502
1503 EXAMPLE_LIST="
1504     avio_dir_cmd_example
1505     avio_reading_example
1506     decode_audio_example
1507     decode_video_example
1508     demuxing_decoding_example
1509     encode_audio_example
1510     encode_video_example
1511     extract_mvs_example
1512     filter_audio_example
1513     filtering_audio_example
1514     filtering_video_example
1515     http_multiclient_example
1516     hw_decode_example
1517     metadata_example
1518     muxing_example
1519     qsvdec_example
1520     remuxing_example
1521     resampling_audio_example
1522     scaling_video_example
1523     transcode_aac_example
1524     transcoding_example
1525 "
1526
1527 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1528     alsa
1529     appkit
1530     avfoundation
1531     bzlib
1532     coreimage
1533     iconv
1534     libxcb
1535     libxcb_shm
1536     libxcb_shape
1537     libxcb_xfixes
1538     lzma
1539     schannel
1540     sdl2
1541     securetransport
1542     sndio
1543     xlib
1544     zlib
1545 "
1546
1547 EXTERNAL_LIBRARY_GPL_LIST="
1548     avisynth
1549     frei0r
1550     libcdio
1551     librubberband
1552     libvidstab
1553     libx264
1554     libx265
1555     libxavs
1556     libxvid
1557 "
1558
1559 EXTERNAL_LIBRARY_NONFREE_LIST="
1560     decklink
1561     libndi_newtek
1562     libfdk_aac
1563     openssl
1564 "
1565
1566 EXTERNAL_LIBRARY_VERSION3_LIST="
1567     gmp
1568     libopencore_amrnb
1569     libopencore_amrwb
1570     libvmaf
1571     libvo_amrwbenc
1572     rkmpp
1573 "
1574
1575 EXTERNAL_LIBRARY_GPLV3_LIST="
1576     libsmbclient
1577 "
1578
1579 EXTERNAL_LIBRARY_LIST="
1580     $EXTERNAL_LIBRARY_GPL_LIST
1581     $EXTERNAL_LIBRARY_NONFREE_LIST
1582     $EXTERNAL_LIBRARY_VERSION3_LIST
1583     $EXTERNAL_LIBRARY_GPLV3_LIST
1584     chromaprint
1585     gcrypt
1586     gnutls
1587     jni
1588     ladspa
1589     libass
1590     libbluray
1591     libbs2b
1592     libcaca
1593     libcelt
1594     libdc1394
1595     libdrm
1596     libflite
1597     libfontconfig
1598     libfreetype
1599     libfribidi
1600     libgme
1601     libgsm
1602     libiec61883
1603     libilbc
1604     libjack
1605     libkvazaar
1606     libmodplug
1607     libmp3lame
1608     libmysofa
1609     libopencv
1610     libopenh264
1611     libopenjpeg
1612     libopenmpt
1613     libopus
1614     libpulse
1615     librsvg
1616     librtmp
1617     libshine
1618     libsmbclient
1619     libsnappy
1620     libsoxr
1621     libspeex
1622     libssh
1623     libtesseract
1624     libtheora
1625     libtwolame
1626     libv4l2
1627     libvorbis
1628     libvpx
1629     libwavpack
1630     libwebp
1631     libxml2
1632     libzimg
1633     libzmq
1634     libzvbi
1635     lv2
1636     mediacodec
1637     openal
1638     opengl
1639 "
1640
1641 HWACCEL_AUTODETECT_LIBRARY_LIST="
1642     audiotoolbox
1643     crystalhd
1644     cuda
1645     cuvid
1646     d3d11va
1647     dxva2
1648     nvdec
1649     nvenc
1650     vaapi
1651     vdpau
1652     videotoolbox
1653     v4l2_m2m
1654     xvmc
1655 "
1656
1657 # catchall list of things that require external libs to link
1658 EXTRALIBS_LIST="
1659     cpu_init
1660     cws2fws
1661 "
1662
1663 HWACCEL_LIBRARY_NONFREE_LIST="
1664     cuda_sdk
1665     libnpp
1666 "
1667
1668 HWACCEL_LIBRARY_LIST="
1669     $HWACCEL_LIBRARY_NONFREE_LIST
1670     libmfx
1671     mmal
1672     omx
1673     opencl
1674 "
1675
1676 DOCUMENT_LIST="
1677     doc
1678     htmlpages
1679     manpages
1680     podpages
1681     txtpages
1682 "
1683
1684 FEATURE_LIST="
1685     ftrapv
1686     gray
1687     hardcoded_tables
1688     omx_rpi
1689     runtime_cpudetect
1690     safe_bitstream_reader
1691     shared
1692     small
1693     static
1694     swscale_alpha
1695 "
1696
1697 LIBRARY_LIST="
1698     avcodec
1699     avdevice
1700     avfilter
1701     avformat
1702     avresample
1703     avutil
1704     postproc
1705     swresample
1706     swscale
1707 "
1708
1709 LICENSE_LIST="
1710     gpl
1711     nonfree
1712     version3
1713 "
1714
1715 PROGRAM_LIST="
1716     ffplay
1717     ffprobe
1718     ffserver
1719     ffmpeg
1720 "
1721
1722 SUBSYSTEM_LIST="
1723     dct
1724     dwt
1725     error_resilience
1726     faan
1727     fast_unaligned
1728     fft
1729     lsp
1730     lzo
1731     mdct
1732     pixelutils
1733     network
1734     rdft
1735 "
1736
1737 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1738 CONFIG_LIST="
1739     $DOCUMENT_LIST
1740     $EXAMPLE_LIST
1741     $EXTERNAL_LIBRARY_LIST
1742     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1743     $HWACCEL_LIBRARY_LIST
1744     $HWACCEL_AUTODETECT_LIBRARY_LIST
1745     $FEATURE_LIST
1746     $LICENSE_LIST
1747     $LIBRARY_LIST
1748     $PROGRAM_LIST
1749     $SUBSYSTEM_LIST
1750     autodetect
1751     fontconfig
1752     linux_perf
1753     memory_poisoning
1754     neon_clobber_test
1755     ossfuzz
1756     pic
1757     thumb
1758     valgrind_backtrace
1759     xmm_clobber_test
1760     $COMPONENT_LIST
1761 "
1762
1763 THREADS_LIST="
1764     pthreads
1765     os2threads
1766     w32threads
1767 "
1768
1769 ATOMICS_LIST="
1770     atomics_gcc
1771     atomics_suncc
1772     atomics_win32
1773 "
1774
1775 AUTODETECT_LIBS="
1776     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1777     $HWACCEL_AUTODETECT_LIBRARY_LIST
1778     $THREADS_LIST
1779 "
1780
1781 ARCH_LIST="
1782     aarch64
1783     alpha
1784     arm
1785     avr32
1786     avr32_ap
1787     avr32_uc
1788     bfin
1789     ia64
1790     m68k
1791     mips
1792     mips64
1793     parisc
1794     ppc
1795     ppc64
1796     s390
1797     sh4
1798     sparc
1799     sparc64
1800     tilegx
1801     tilepro
1802     tomi
1803     x86
1804     x86_32
1805     x86_64
1806 "
1807
1808 ARCH_EXT_LIST_ARM="
1809     armv5te
1810     armv6
1811     armv6t2
1812     armv8
1813     neon
1814     vfp
1815     vfpv3
1816     setend
1817 "
1818
1819 ARCH_EXT_LIST_MIPS="
1820     mipsfpu
1821     mips32r2
1822     mips32r5
1823     mips64r2
1824     mips32r6
1825     mips64r6
1826     mipsdsp
1827     mipsdspr2
1828     msa
1829 "
1830
1831 ARCH_EXT_LIST_LOONGSON="
1832     loongson2
1833     loongson3
1834     mmi
1835 "
1836
1837 ARCH_EXT_LIST_X86_SIMD="
1838     aesni
1839     amd3dnow
1840     amd3dnowext
1841     avx
1842     avx2
1843     fma3
1844     fma4
1845     mmx
1846     mmxext
1847     sse
1848     sse2
1849     sse3
1850     sse4
1851     sse42
1852     ssse3
1853     xop
1854 "
1855
1856 ARCH_EXT_LIST_PPC="
1857     altivec
1858     dcbzl
1859     ldbrx
1860     power8
1861     ppc4xx
1862     vsx
1863 "
1864
1865 ARCH_EXT_LIST_X86="
1866     $ARCH_EXT_LIST_X86_SIMD
1867     cpunop
1868     i686
1869 "
1870
1871 ARCH_EXT_LIST="
1872     $ARCH_EXT_LIST_ARM
1873     $ARCH_EXT_LIST_PPC
1874     $ARCH_EXT_LIST_X86
1875     $ARCH_EXT_LIST_MIPS
1876     $ARCH_EXT_LIST_LOONGSON
1877 "
1878
1879 ARCH_FEATURES="
1880     aligned_stack
1881     fast_64bit
1882     fast_clz
1883     fast_cmov
1884     local_aligned
1885     simd_align_16
1886     simd_align_32
1887 "
1888
1889 BUILTIN_LIST="
1890     atomic_cas_ptr
1891     machine_rw_barrier
1892     MemoryBarrier
1893     mm_empty
1894     rdtsc
1895     sarestart
1896     sem_timedwait
1897     sync_val_compare_and_swap
1898 "
1899 HAVE_LIST_CMDLINE="
1900     inline_asm
1901     symver
1902     x86asm
1903 "
1904
1905 HAVE_LIST_PUB="
1906     bigendian
1907     fast_unaligned
1908 "
1909
1910 HEADERS_LIST="
1911     arpa_inet_h
1912     asm_types_h
1913     cdio_paranoia_h
1914     cdio_paranoia_paranoia_h
1915     cuda_h
1916     dispatch_dispatch_h
1917     dev_bktr_ioctl_bt848_h
1918     dev_bktr_ioctl_meteor_h
1919     dev_ic_bt8xx_h
1920     dev_video_bktr_ioctl_bt848_h
1921     dev_video_meteor_ioctl_meteor_h
1922     direct_h
1923     dirent_h
1924     dxgidebug_h
1925     dxva_h
1926     ES2_gl_h
1927     gsm_h
1928     io_h
1929     machine_ioctl_bt848_h
1930     machine_ioctl_meteor_h
1931     malloc_h
1932     opencv2_core_core_c_h
1933     OpenGL_gl3_h
1934     poll_h
1935     sys_param_h
1936     sys_resource_h
1937     sys_select_h
1938     sys_soundcard_h
1939     sys_time_h
1940     sys_un_h
1941     sys_videoio_h
1942     termios_h
1943     udplite_h
1944     unistd_h
1945     valgrind_valgrind_h
1946     windows_h
1947     winsock2_h
1948 "
1949
1950 INTRINSICS_LIST="
1951     intrinsics_neon
1952 "
1953
1954 COMPLEX_FUNCS="
1955     cabs
1956     cexp
1957 "
1958
1959 MATH_FUNCS="
1960     atanf
1961     atan2f
1962     cbrt
1963     cbrtf
1964     copysign
1965     cosf
1966     erf
1967     exp2
1968     exp2f
1969     expf
1970     hypot
1971     isfinite
1972     isinf
1973     isnan
1974     ldexpf
1975     llrint
1976     llrintf
1977     log2
1978     log2f
1979     log10f
1980     lrint
1981     lrintf
1982     powf
1983     rint
1984     round
1985     roundf
1986     sinf
1987     trunc
1988     truncf
1989 "
1990
1991 SYSTEM_FEATURES="
1992     atomics_native
1993     dos_paths
1994     libc_msvcrt
1995     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
1996     section_data_rel_ro
1997     threads
1998     uwp
1999     winrt
2000 "
2001
2002 SYSTEM_FUNCS="
2003     access
2004     aligned_malloc
2005     arc4random
2006     clock_gettime
2007     closesocket
2008     CommandLineToArgvW
2009     fcntl
2010     getaddrinfo
2011     gethrtime
2012     getopt
2013     GetProcessAffinityMask
2014     GetProcessMemoryInfo
2015     GetProcessTimes
2016     getrusage
2017     GetSystemTimeAsFileTime
2018     gettimeofday
2019     glob
2020     glXGetProcAddress
2021     gmtime_r
2022     inet_aton
2023     isatty
2024     kbhit
2025     localtime_r
2026     lstat
2027     lzo1x_999_compress
2028     mach_absolute_time
2029     MapViewOfFile
2030     memalign
2031     mkstemp
2032     mmap
2033     mprotect
2034     nanosleep
2035     PeekNamedPipe
2036     posix_memalign
2037     pthread_cancel
2038     sched_getaffinity
2039     SecItemImport
2040     SetConsoleTextAttribute
2041     SetConsoleCtrlHandler
2042     setmode
2043     setrlimit
2044     Sleep
2045     strerror_r
2046     sysconf
2047     sysctl
2048     usleep
2049     UTGetOSTypeFromString
2050     VirtualAlloc
2051     wglGetProcAddress
2052 "
2053
2054 SYSTEM_LIBRARIES="
2055     vaapi_drm
2056     vaapi_x11
2057     vdpau_x11
2058     wincrypt
2059 "
2060
2061 TOOLCHAIN_FEATURES="
2062     as_arch_directive
2063     as_fpu_directive
2064     as_func
2065     as_object_arch
2066     asm_mod_q
2067     blocks_extension
2068     ebp_available
2069     ebx_available
2070     gnu_as
2071     gnu_windres
2072     ibm_asm
2073     inline_asm_direct_symbol_refs
2074     inline_asm_labels
2075     inline_asm_nonlocal_labels
2076     pragma_deprecated
2077     rsync_contimeout
2078     symver_asm_label
2079     symver_gnu_asm
2080     vfp_args
2081     xform_asm
2082     xmm_clobbers
2083 "
2084
2085 TYPES_LIST="
2086     CONDITION_VARIABLE_Ptr
2087     kCMVideoCodecType_HEVC
2088     socklen_t
2089     struct_addrinfo
2090     struct_group_source_req
2091     struct_ip_mreq_source
2092     struct_ipv6_mreq
2093     struct_msghdr_msg_flags
2094     struct_pollfd
2095     struct_rusage_ru_maxrss
2096     struct_sctp_event_subscribe
2097     struct_sockaddr_in6
2098     struct_sockaddr_sa_len
2099     struct_sockaddr_storage
2100     struct_stat_st_mtim_tv_nsec
2101     struct_v4l2_frmivalenum_discrete
2102 "
2103
2104 HAVE_LIST="
2105     $ARCH_EXT_LIST
2106     $(add_suffix _external $ARCH_EXT_LIST)
2107     $(add_suffix _inline   $ARCH_EXT_LIST)
2108     $ARCH_FEATURES
2109     $ATOMICS_LIST
2110     $BUILTIN_LIST
2111     $COMPLEX_FUNCS
2112     $HAVE_LIST_CMDLINE
2113     $HAVE_LIST_PUB
2114     $HEADERS_LIST
2115     $INTRINSICS_LIST
2116     $MATH_FUNCS
2117     $SYSTEM_FEATURES
2118     $SYSTEM_FUNCS
2119     $SYSTEM_LIBRARIES
2120     $THREADS_LIST
2121     $TOOLCHAIN_FEATURES
2122     $TYPES_LIST
2123     makeinfo
2124     makeinfo_html
2125     opencl_d3d11
2126     opencl_drm_arm
2127     opencl_dxva2
2128     opencl_vaapi_beignet
2129     opencl_vaapi_intel_media
2130     perl
2131     pod2man
2132     texi2html
2133 "
2134
2135 # options emitted with CONFIG_ prefix but not available on the command line
2136 CONFIG_EXTRA="
2137     aandcttables
2138     ac3dsp
2139     adts_header
2140     audio_frame_queue
2141     audiodsp
2142     blockdsp
2143     bswapdsp
2144     cabac
2145     cbs
2146     cbs_h264
2147     cbs_h265
2148     cbs_mpeg2
2149     dirac_parse
2150     dvprofile
2151     exif
2152     faandct
2153     faanidct
2154     fdctdsp
2155     flacdsp
2156     fmtconvert
2157     frame_thread_encoder
2158     g722dsp
2159     golomb
2160     gplv3
2161     h263dsp
2162     h264chroma
2163     h264dsp
2164     h264parse
2165     h264pred
2166     h264qpel
2167     hevcparse
2168     hpeldsp
2169     huffman
2170     huffyuvdsp
2171     huffyuvencdsp
2172     idctdsp
2173     iirfilter
2174     mdct15
2175     intrax8
2176     iso_media
2177     ividsp
2178     jpegtables
2179     lgplv3
2180     libx262
2181     llauddsp
2182     llviddsp
2183     llvidencdsp
2184     lpc
2185     lzf
2186     me_cmp
2187     mpeg_er
2188     mpegaudio
2189     mpegaudiodsp
2190     mpegaudioheader
2191     mpegvideo
2192     mpegvideoenc
2193     mss34dsp
2194     pixblockdsp
2195     qpeldsp
2196     qsv
2197     qsvdec
2198     qsvenc
2199     qsvvpp
2200     rangecoder
2201     riffdec
2202     riffenc
2203     rtpdec
2204     rtpenc_chain
2205     rv34dsp
2206     sinewin
2207     snappy
2208     srtp
2209     startcode
2210     texturedsp
2211     texturedspenc
2212     tpeldsp
2213     vaapi_1
2214     vaapi_encode
2215     vc1dsp
2216     videodsp
2217     vp3dsp
2218     vp56dsp
2219     vp8dsp
2220     wma_freqs
2221     wmv2dsp
2222 "
2223
2224 CMDLINE_SELECT="
2225     $ARCH_EXT_LIST
2226     $CONFIG_LIST
2227     $HAVE_LIST_CMDLINE
2228     $THREADS_LIST
2229     asm
2230     cross_compile
2231     debug
2232     extra_warnings
2233     logging
2234     lto
2235     optimizations
2236     rpath
2237     stripping
2238 "
2239
2240 PATHS_LIST="
2241     bindir
2242     datadir
2243     docdir
2244     incdir
2245     libdir
2246     mandir
2247     pkgconfigdir
2248     prefix
2249     shlibdir
2250     install_name_dir
2251 "
2252
2253 CMDLINE_SET="
2254     $PATHS_LIST
2255     ar
2256     arch
2257     as
2258     assert_level
2259     build_suffix
2260     cc
2261     objcc
2262     cpu
2263     cross_prefix
2264     custom_allocator
2265     cxx
2266     dep_cc
2267     doxygen
2268     env
2269     extra_version
2270     gas
2271     host_cc
2272     host_cflags
2273     host_extralibs
2274     host_ld
2275     host_ldflags
2276     host_os
2277     ignore_tests
2278     install
2279     ld
2280     ln_s
2281     logfile
2282     malloc_prefix
2283     nm
2284     optflags
2285     nvccflags
2286     pkg_config
2287     pkg_config_flags
2288     progs_suffix
2289     random_seed
2290     ranlib
2291     samples
2292     strip
2293     sws_max_filter_size
2294     sysinclude
2295     sysroot
2296     target_exec
2297     target_os
2298     target_path
2299     target_samples
2300     tempprefix
2301     toolchain
2302     valgrind
2303     x86asmexe
2304 "
2305
2306 CMDLINE_APPEND="
2307     extra_cflags
2308     extra_cxxflags
2309     extra_objcflags
2310     host_cppflags
2311 "
2312
2313 # code dependency declarations
2314
2315 # architecture extensions
2316
2317 armv5te_deps="arm"
2318 armv6_deps="arm"
2319 armv6t2_deps="arm"
2320 armv8_deps="aarch64"
2321 neon_deps_any="aarch64 arm"
2322 intrinsics_neon_deps="neon"
2323 vfp_deps_any="aarch64 arm"
2324 vfpv3_deps="vfp"
2325 setend_deps="arm"
2326
2327 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2328
2329 altivec_deps="ppc"
2330 dcbzl_deps="ppc"
2331 ldbrx_deps="ppc"
2332 ppc4xx_deps="ppc"
2333 vsx_deps="altivec"
2334 power8_deps="vsx"
2335
2336 loongson2_deps="mips"
2337 loongson3_deps="mips"
2338 mips32r2_deps="mips"
2339 mips32r5_deps="mips"
2340 mips32r6_deps="mips"
2341 mips64r2_deps="mips"
2342 mips64r6_deps="mips"
2343 mipsfpu_deps="mips"
2344 mipsdsp_deps="mips"
2345 mipsdspr2_deps="mips"
2346 mmi_deps="mips"
2347 msa_deps="mipsfpu"
2348
2349 cpunop_deps="i686"
2350 x86_64_select="i686"
2351 x86_64_suggest="fast_cmov"
2352
2353 amd3dnow_deps="mmx"
2354 amd3dnowext_deps="amd3dnow"
2355 i686_deps="x86"
2356 mmx_deps="x86"
2357 mmxext_deps="mmx"
2358 sse_deps="mmxext"
2359 sse2_deps="sse"
2360 sse3_deps="sse2"
2361 ssse3_deps="sse3"
2362 sse4_deps="ssse3"
2363 sse42_deps="sse4"
2364 aesni_deps="sse42"
2365 avx_deps="sse42"
2366 xop_deps="avx"
2367 fma3_deps="avx"
2368 fma4_deps="avx"
2369 avx2_deps="avx"
2370
2371 mmx_external_deps="x86asm"
2372 mmx_inline_deps="inline_asm x86"
2373 mmx_suggest="mmx_external mmx_inline"
2374
2375 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2376     eval dep=\$${ext}_deps
2377     eval ${ext}_external_deps='"${dep}_external"'
2378     eval ${ext}_inline_deps='"${dep}_inline"'
2379     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2380 done
2381
2382 aligned_stack_if_any="aarch64 ppc x86"
2383 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2384 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2385 fast_unaligned_if_any="aarch64 ppc x86"
2386 simd_align_16_if_any="altivec neon sse"
2387 simd_align_32_if_any="avx"
2388
2389 # system capabilities
2390 symver_if_any="symver_asm_label symver_gnu_asm"
2391 valgrind_backtrace_conflict="optimizations"
2392 valgrind_backtrace_deps="valgrind_valgrind_h"
2393
2394 # threading support
2395 atomics_gcc_if="sync_val_compare_and_swap"
2396 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2397 atomics_win32_if="MemoryBarrier"
2398 atomics_native_if_any="$ATOMICS_LIST"
2399 w32threads_deps="atomics_native"
2400 threads_if_any="$THREADS_LIST"
2401
2402 # subsystems
2403 cbs_h264_select="cbs golomb"
2404 cbs_h265_select="cbs golomb"
2405 cbs_mpeg2_select="cbs"
2406 dct_select="rdft"
2407 dirac_parse_select="golomb"
2408 error_resilience_select="me_cmp"
2409 faandct_deps="faan"
2410 faandct_select="fdctdsp"
2411 faanidct_deps="faan"
2412 faanidct_select="idctdsp"
2413 h264dsp_select="startcode"
2414 hevcparse_select="golomb"
2415 frame_thread_encoder_deps="encoders threads"
2416 intrax8_select="blockdsp idctdsp"
2417 mdct_select="fft"
2418 mdct15_select="fft"
2419 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2420 mpeg_er_select="error_resilience"
2421 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2422 mpegaudiodsp_select="dct"
2423 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2424 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2425 vc1dsp_select="h264chroma qpeldsp startcode"
2426 rdft_select="fft"
2427
2428 # decoders / encoders
2429 aac_decoder_select="adts_header mdct15 mdct sinewin"
2430 aac_fixed_decoder_select="mdct sinewin"
2431 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2432 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2433 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2434 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2435 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2436 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2437 adpcm_g722_decoder_select="g722dsp"
2438 adpcm_g722_encoder_select="g722dsp"
2439 aic_decoder_select="golomb idctdsp"
2440 alac_encoder_select="lpc"
2441 als_decoder_select="bswapdsp"
2442 amrnb_decoder_select="lsp"
2443 amrwb_decoder_select="lsp"
2444 amv_decoder_select="sp5x_decoder exif"
2445 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2446 ape_decoder_select="bswapdsp llauddsp"
2447 apng_decoder_deps="zlib"
2448 apng_encoder_deps="zlib"
2449 apng_encoder_select="llvidencdsp"
2450 aptx_decoder_select="audio_frame_queue"
2451 aptx_encoder_select="audio_frame_queue"
2452 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2453 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2454 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2455 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2456 atrac1_decoder_select="mdct sinewin"
2457 atrac3_decoder_select="mdct"
2458 atrac3p_decoder_select="mdct sinewin"
2459 avrn_decoder_select="exif jpegtables"
2460 bink_decoder_select="blockdsp hpeldsp"
2461 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2462 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2463 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2464 clearvideo_decoder_select="idctdsp"
2465 cllc_decoder_select="bswapdsp"
2466 comfortnoise_encoder_select="lpc"
2467 cook_decoder_select="audiodsp mdct sinewin"
2468 cscd_decoder_select="lzo"
2469 cscd_decoder_suggest="zlib"
2470 dca_decoder_select="mdct"
2471 dds_decoder_select="texturedsp"
2472 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2473 dnxhd_decoder_select="blockdsp idctdsp"
2474 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2475 dolby_e_decoder_select="mdct"
2476 dvvideo_decoder_select="dvprofile idctdsp"
2477 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2478 dxa_decoder_deps="zlib"
2479 dxv_decoder_select="lzf texturedsp"
2480 eac3_decoder_select="ac3_decoder"
2481 eac3_encoder_select="ac3_encoder"
2482 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2483 eatgq_decoder_select="aandcttables"
2484 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2485 exr_decoder_deps="zlib"
2486 ffv1_decoder_select="rangecoder"
2487 ffv1_encoder_select="rangecoder"
2488 ffvhuff_decoder_select="huffyuv_decoder"
2489 ffvhuff_encoder_select="huffyuv_encoder"
2490 fic_decoder_select="golomb"
2491 flac_decoder_select="flacdsp"
2492 flac_encoder_select="bswapdsp flacdsp lpc"
2493 flashsv2_decoder_deps="zlib"
2494 flashsv2_encoder_deps="zlib"
2495 flashsv_decoder_deps="zlib"
2496 flashsv_encoder_deps="zlib"
2497 flv_decoder_select="h263_decoder"
2498 flv_encoder_select="h263_encoder"
2499 fourxm_decoder_select="blockdsp bswapdsp"
2500 fraps_decoder_select="bswapdsp huffman"
2501 g2m_decoder_deps="zlib"
2502 g2m_decoder_select="blockdsp idctdsp jpegtables"
2503 g729_decoder_select="audiodsp"
2504 h261_decoder_select="mpegvideo"
2505 h261_encoder_select="aandcttables mpegvideoenc"
2506 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2507 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2508 h263i_decoder_select="h263_decoder"
2509 h263p_decoder_select="h263_decoder"
2510 h263p_encoder_select="h263_encoder"
2511 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2512 h264_decoder_suggest="error_resilience"
2513 hap_decoder_select="snappy texturedsp"
2514 hap_encoder_deps="libsnappy"
2515 hap_encoder_select="texturedspenc"
2516 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2517 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2518 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2519 iac_decoder_select="imc_decoder"
2520 imc_decoder_select="bswapdsp fft mdct sinewin"
2521 indeo3_decoder_select="hpeldsp"
2522 indeo4_decoder_select="ividsp"
2523 indeo5_decoder_select="ividsp"
2524 interplay_video_decoder_select="hpeldsp"
2525 jpegls_decoder_select="mjpeg_decoder"
2526 jv_decoder_select="blockdsp"
2527 lagarith_decoder_select="llviddsp"
2528 ljpeg_encoder_select="aandcttables idctdsp jpegtables mpegvideoenc"
2529 magicyuv_decoder_select="llviddsp"
2530 magicyuv_encoder_select="llvidencdsp"
2531 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2532 metasound_decoder_select="lsp mdct sinewin"
2533 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2534 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2535 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2536 mjpegb_decoder_select="mjpeg_decoder"
2537 mlp_decoder_select="mlp_parser"
2538 mlp_encoder_select="lpc"
2539 motionpixels_decoder_select="bswapdsp"
2540 mp1_decoder_select="mpegaudio"
2541 mp1float_decoder_select="mpegaudio"
2542 mp2_decoder_select="mpegaudio"
2543 mp2float_decoder_select="mpegaudio"
2544 mp3_decoder_select="mpegaudio"
2545 mp3adu_decoder_select="mpegaudio"
2546 mp3adufloat_decoder_select="mpegaudio"
2547 mp3float_decoder_select="mpegaudio"
2548 mp3on4_decoder_select="mpegaudio"
2549 mp3on4float_decoder_select="mpegaudio"
2550 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2551 mpc8_decoder_select="mpegaudiodsp"
2552 mpegvideo_decoder_select="mpegvideo"
2553 mpeg1video_decoder_select="mpegvideo"
2554 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2555 mpeg2video_decoder_select="mpegvideo"
2556 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2557 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2558 mpeg4_encoder_select="h263_encoder"
2559 msa1_decoder_select="mss34dsp"
2560 mscc_decoder_deps="zlib"
2561 msmpeg4v1_decoder_select="h263_decoder"
2562 msmpeg4v2_decoder_select="h263_decoder"
2563 msmpeg4v2_encoder_select="h263_encoder"
2564 msmpeg4v3_decoder_select="h263_decoder"
2565 msmpeg4v3_encoder_select="h263_encoder"
2566 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2567 mts2_decoder_select="mss34dsp"
2568 mxpeg_decoder_select="mjpeg_decoder"
2569 nellymoser_decoder_select="mdct sinewin"
2570 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2571 nuv_decoder_select="idctdsp lzo"
2572 on2avc_decoder_select="mdct"
2573 opus_decoder_deps="swresample"
2574 opus_decoder_select="mdct15"
2575 opus_encoder_select="audio_frame_queue mdct15"
2576 png_decoder_deps="zlib"
2577 png_encoder_deps="zlib"
2578 png_encoder_select="llvidencdsp"
2579 prores_decoder_select="blockdsp idctdsp"
2580 prores_encoder_select="fdctdsp"
2581 qcelp_decoder_select="lsp"
2582 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2583 ra_144_decoder_select="audiodsp"
2584 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2585 ralf_decoder_select="golomb"
2586 rawvideo_decoder_select="bswapdsp"
2587 rscc_decoder_deps="zlib"
2588 rtjpeg_decoder_select="me_cmp"
2589 rv10_decoder_select="h263_decoder"
2590 rv10_encoder_select="h263_encoder"
2591 rv20_decoder_select="h263_decoder"
2592 rv20_encoder_select="h263_encoder"
2593 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2594 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2595 screenpresso_decoder_deps="zlib"
2596 shorten_decoder_select="bswapdsp"
2597 sipr_decoder_select="lsp"
2598 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2599 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2600 sonic_decoder_select="golomb rangecoder"
2601 sonic_encoder_select="golomb rangecoder"
2602 sonic_ls_encoder_select="golomb rangecoder"
2603 sp5x_decoder_select="mjpeg_decoder"
2604 srgc_decoder_deps="zlib"
2605 svq1_decoder_select="hpeldsp"
2606 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2607 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2608 svq3_decoder_suggest="zlib"
2609 tak_decoder_select="audiodsp"
2610 tdsc_decoder_deps="zlib"
2611 tdsc_decoder_select="mjpeg_decoder"
2612 theora_decoder_select="vp3_decoder"
2613 thp_decoder_select="mjpeg_decoder"
2614 tiff_decoder_suggest="zlib lzma"
2615 tiff_encoder_suggest="zlib"
2616 truehd_decoder_select="mlp_parser"
2617 truehd_encoder_select="lpc"
2618 truemotion2_decoder_select="bswapdsp"
2619 truespeech_decoder_select="bswapdsp"
2620 tscc_decoder_deps="zlib"
2621 twinvq_decoder_select="mdct lsp sinewin"
2622 txd_decoder_select="texturedsp"
2623 utvideo_decoder_select="bswapdsp llviddsp"
2624 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2625 vble_decoder_select="llviddsp"
2626 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2627 vc1image_decoder_select="vc1_decoder"
2628 vorbis_decoder_select="mdct"
2629 vorbis_encoder_select="mdct"
2630 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2631 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2632 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2633 vp6a_decoder_select="vp6_decoder"
2634 vp6f_decoder_select="vp6_decoder"
2635 vp7_decoder_select="h264pred videodsp vp8dsp"
2636 vp8_decoder_select="h264pred videodsp vp8dsp"
2637 vp9_decoder_select="videodsp vp9_parser"
2638 webp_decoder_select="vp8_decoder exif"
2639 wmalossless_decoder_select="llauddsp"
2640 wmapro_decoder_select="mdct sinewin wma_freqs"
2641 wmav1_decoder_select="mdct sinewin wma_freqs"
2642 wmav1_encoder_select="mdct sinewin wma_freqs"
2643 wmav2_decoder_select="mdct sinewin wma_freqs"
2644 wmav2_encoder_select="mdct sinewin wma_freqs"
2645 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2646 wmv1_decoder_select="h263_decoder"
2647 wmv1_encoder_select="h263_encoder"
2648 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2649 wmv2_encoder_select="h263_encoder wmv2dsp"
2650 wmv3_decoder_select="vc1_decoder"
2651 wmv3image_decoder_select="wmv3_decoder"
2652 xma1_decoder_select="wmapro_decoder"
2653 xma2_decoder_select="wmapro_decoder"
2654 zerocodec_decoder_deps="zlib"
2655 zlib_decoder_deps="zlib"
2656 zlib_encoder_deps="zlib"
2657 zmbv_decoder_deps="zlib"
2658 zmbv_encoder_deps="zlib"
2659
2660 # hardware accelerators
2661 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2662 cuda_deps_any="libdl LoadLibrary"
2663 cuvid_deps="cuda"
2664 d3d11va_deps="dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2665 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32 user32"
2666 nvdec_deps="cuda"
2667 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2668 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2669 xvmc_deps="X11_extensions_XvMClib_h"
2670
2671 h263_vaapi_hwaccel_deps="vaapi"
2672 h263_vaapi_hwaccel_select="h263_decoder"
2673 h263_videotoolbox_hwaccel_deps="videotoolbox"
2674 h263_videotoolbox_hwaccel_select="h263_decoder"
2675 h264_cuvid_hwaccel_select="h264_cuvid_decoder"
2676 h264_d3d11va_hwaccel_deps="d3d11va"
2677 h264_d3d11va_hwaccel_select="h264_decoder"
2678 h264_d3d11va2_hwaccel_deps="d3d11va"
2679 h264_d3d11va2_hwaccel_select="h264_decoder"
2680 h264_dxva2_hwaccel_deps="dxva2"
2681 h264_dxva2_hwaccel_select="h264_decoder"
2682 h264_mediacodec_hwaccel_deps="mediacodec"
2683 h264_mmal_hwaccel_deps="mmal"
2684 h264_nvdec_hwaccel_deps="nvdec"
2685 h264_nvdec_hwaccel_select="h264_decoder"
2686 h264_qsv_hwaccel_deps="libmfx"
2687 h264_vaapi_hwaccel_deps="vaapi"
2688 h264_vaapi_hwaccel_select="h264_decoder"
2689 h264_vdpau_hwaccel_deps="vdpau"
2690 h264_vdpau_hwaccel_select="h264_decoder"
2691 h264_videotoolbox_hwaccel_deps="videotoolbox"
2692 h264_videotoolbox_hwaccel_select="h264_decoder"
2693 hevc_cuvid_hwaccel_select="hevc_cuvid_decoder"
2694 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2695 hevc_d3d11va_hwaccel_select="hevc_decoder"
2696 hevc_mediacodec_hwaccel_deps="mediacodec"
2697 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2698 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2699 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2700 hevc_dxva2_hwaccel_select="hevc_decoder"
2701 hevc_nvdec_hwaccel_deps="nvdec"
2702 hevc_nvdec_hwaccel_select="hevc_decoder"
2703 hevc_qsv_hwaccel_deps="libmfx"
2704 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2705 hevc_vaapi_hwaccel_select="hevc_decoder"
2706 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2707 hevc_vdpau_hwaccel_select="hevc_decoder"
2708 hevc_videotoolbox_hwaccel_deps="videotoolbox"
2709 hevc_videotoolbox_hwaccel_select="hevc_decoder"
2710 mjpeg_cuvid_hwaccel_select="mjpeg_cuvid_decoder"
2711 mpeg_xvmc_hwaccel_deps="xvmc"
2712 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2713 mpeg1_cuvid_hwaccel_select="mpeg1_cuvid_decoder"
2714 mpeg1_nvdec_hwaccel_deps="nvdec"
2715 mpeg1_nvdec_hwaccel_select="mpeg1video_decoder"
2716 mpeg1_vdpau_hwaccel_deps="vdpau"
2717 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2718 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2719 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2720 mpeg1_xvmc_hwaccel_deps="xvmc"
2721 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2722 mpeg2_cuvid_hwaccel_select="mpeg2_cuvid_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_mediacodec_hwaccel_deps="mediacodec"
2730 mpeg2_mmal_hwaccel_deps="mmal"
2731 mpeg2_nvdec_hwaccel_deps="nvdec"
2732 mpeg2_nvdec_hwaccel_select="mpeg2video_decoder"
2733 mpeg2_qsv_hwaccel_deps="libmfx"
2734 mpeg2_vaapi_hwaccel_deps="vaapi"
2735 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2736 mpeg2_vdpau_hwaccel_deps="vdpau"
2737 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2738 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2739 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2740 mpeg2_xvmc_hwaccel_deps="xvmc"
2741 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2742 mpeg4_cuvid_hwaccel_select="mpeg4_cuvid_decoder"
2743 mpeg4_mediacodec_hwaccel_deps="mediacodec"
2744 mpeg4_mmal_hwaccel_deps="mmal"
2745 mpeg4_nvdec_hwaccel_deps="nvdec"
2746 mpeg4_nvdec_hwaccel_select="mpeg4_decoder"
2747 mpeg4_vaapi_hwaccel_deps="vaapi"
2748 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2749 mpeg4_vdpau_hwaccel_deps="vdpau"
2750 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2751 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2752 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2753 vc1_cuvid_hwaccel_select="vc1_cuvid_decoder"
2754 vc1_d3d11va_hwaccel_deps="d3d11va"
2755 vc1_d3d11va_hwaccel_select="vc1_decoder"
2756 vc1_d3d11va2_hwaccel_deps="d3d11va"
2757 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2758 vc1_dxva2_hwaccel_deps="dxva2"
2759 vc1_dxva2_hwaccel_select="vc1_decoder"
2760 vc1_mmal_hwaccel_deps="mmal"
2761 vc1_nvdec_hwaccel_deps="nvdec"
2762 vc1_nvdec_hwaccel_select="vc1_decoder"
2763 vc1_qsv_hwaccel_deps="libmfx"
2764 vc1_vaapi_hwaccel_deps="vaapi"
2765 vc1_vaapi_hwaccel_select="vc1_decoder"
2766 vc1_vdpau_hwaccel_deps="vdpau"
2767 vc1_vdpau_hwaccel_select="vc1_decoder"
2768 vp8_cuvid_hwaccel_select="vp8_cuvid_decoder"
2769 vp9_cuvid_hwaccel_select="vp9_cuvid_decoder"
2770 vp8_mediacodec_hwaccel_deps="mediacodec"
2771 vp8_qsv_hwaccel_deps="libmfx"
2772 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2773 vp9_d3d11va_hwaccel_select="vp9_decoder"
2774 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2775 vp9_d3d11va2_hwaccel_select="vp9_decoder"
2776 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2777 vp9_dxva2_hwaccel_select="vp9_decoder"
2778 vp9_mediacodec_hwaccel_deps="mediacodec"
2779 vp9_nvdec_hwaccel_deps="nvdec"
2780 vp9_nvdec_hwaccel_select="vp9_decoder"
2781 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2782 vp9_vaapi_hwaccel_select="vp9_decoder"
2783 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2784 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2785 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2786 wmv3_nvdec_hwaccel_select="vc1_nvdec_hwaccel"
2787 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2788 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2789
2790 # hardware-accelerated codecs
2791 omx_deps="libdl pthreads"
2792 omx_rpi_select="omx"
2793 qsv_deps="libmfx"
2794 qsvdec_select="qsv"
2795 qsvenc_select="qsv"
2796 qsvvpp_select="qsv"
2797 vaapi_encode_deps="vaapi"
2798 v4l2_m2m_deps_any="linux_videodev2_h"
2799
2800 hwupload_cuda_filter_deps="cuda"
2801 scale_npp_filter_deps="cuda libnpp"
2802 scale_cuda_filter_deps="cuda_sdk"
2803 thumbnail_cuda_filter_deps="cuda_sdk"
2804
2805 nvenc_deps="cuda"
2806 nvenc_deps_any="libdl LoadLibrary"
2807 nvenc_encoder_deps="nvenc"
2808
2809 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
2810 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
2811 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2812 h264_cuvid_decoder_deps="cuvid"
2813 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2814 h264_mediacodec_decoder_deps="mediacodec"
2815 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2816 h264_mmal_decoder_deps="mmal"
2817 h264_nvenc_encoder_deps="nvenc"
2818 h264_omx_encoder_deps="omx"
2819 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2820 h264_qsv_encoder_select="qsvenc"
2821 h264_rkmpp_decoder_deps="rkmpp"
2822 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
2823 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2824 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
2825 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
2826 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
2827 hevc_cuvid_decoder_deps="cuvid"
2828 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
2829 hevc_mediacodec_decoder_deps="mediacodec"
2830 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2831 hevc_nvenc_encoder_deps="nvenc"
2832 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2833 hevc_qsv_encoder_select="hevcparse qsvenc"
2834 hevc_rkmpp_decoder_deps="rkmpp"
2835 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
2836 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2837 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
2838 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
2839 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
2840 mjpeg_cuvid_decoder_deps="cuvid"
2841 mjpeg_qsv_encoder_deps="libmfx"
2842 mjpeg_qsv_encoder_select="qsvenc"
2843 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2844 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2845 mpeg1_cuvid_decoder_deps="cuvid"
2846 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
2847 mpeg2_crystalhd_decoder_select="crystalhd"
2848 mpeg2_cuvid_decoder_deps="cuvid"
2849 mpeg2_mmal_decoder_deps="mmal"
2850 mpeg2_mediacodec_decoder_deps="mediacodec"
2851 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2852 mpeg2_qsv_encoder_select="qsvenc"
2853 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2854 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
2855 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
2856 mpeg4_crystalhd_decoder_select="crystalhd"
2857 mpeg4_cuvid_decoder_deps="cuvid"
2858 mpeg4_mediacodec_decoder_deps="mediacodec"
2859 mpeg4_mmal_decoder_deps="mmal"
2860 mpeg4_omx_encoder_deps="omx"
2861 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2862 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2863 msmpeg4_crystalhd_decoder_select="crystalhd"
2864 nvenc_h264_encoder_select="h264_nvenc_encoder"
2865 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2866 vc1_crystalhd_decoder_select="crystalhd"
2867 vc1_cuvid_decoder_deps="cuvid"
2868 vc1_mmal_decoder_deps="mmal"
2869 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel vc1_parser"
2870 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
2871 vp8_cuvid_decoder_deps="cuvid"
2872 vp8_mediacodec_decoder_deps="mediacodec"
2873 vp8_qsv_decoder_select="qsvdec vp8_qsv_hwaccel vp8_parser"
2874 vp8_rkmpp_decoder_deps="rkmpp"
2875 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2876 vp8_vaapi_encoder_select="vaapi_encode"
2877 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
2878 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
2879 vp9_cuvid_decoder_deps="cuvid"
2880 vp9_mediacodec_decoder_deps="mediacodec"
2881 vp9_rkmpp_decoder_deps="rkmpp"
2882 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
2883 vp9_vaapi_encoder_select="vaapi_encode"
2884 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
2885 wmv3_crystalhd_decoder_select="crystalhd"
2886
2887 # parsers
2888 aac_parser_select="adts_header"
2889 h264_parser_select="golomb h264dsp h264parse"
2890 hevc_parser_select="hevcparse"
2891 mpegaudio_parser_select="mpegaudioheader"
2892 mpegvideo_parser_select="mpegvideo"
2893 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2894 vc1_parser_select="vc1dsp"
2895
2896 # bitstream_filters
2897 aac_adtstoasc_bsf_select="adts_header"
2898 h264_metadata_bsf_select="cbs_h264"
2899 h264_redundant_pps_bsf_select="cbs_h264"
2900 hevc_metadata_bsf_select="cbs_h265"
2901 mjpeg2jpeg_bsf_select="jpegtables"
2902 mpeg2_metadata_bsf_select="cbs_mpeg2"
2903 trace_headers_bsf_select="cbs_h264 cbs_h265 cbs_mpeg2"
2904
2905 # external libraries
2906 aac_at_decoder_deps="audiotoolbox"
2907 ac3_at_decoder_deps="audiotoolbox"
2908 ac3_at_decoder_select="ac3_parser"
2909 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2910 alac_at_decoder_deps="audiotoolbox"
2911 amr_nb_at_decoder_deps="audiotoolbox"
2912 avisynth_deps_any="libdl LoadLibrary"
2913 avisynth_demuxer_deps="avisynth"
2914 avisynth_demuxer_select="riffdec"
2915 eac3_at_decoder_deps="audiotoolbox"
2916 eac3_at_decoder_select="ac3_parser"
2917 gsm_ms_at_decoder_deps="audiotoolbox"
2918 ilbc_at_decoder_deps="audiotoolbox"
2919 mp1_at_decoder_deps="audiotoolbox"
2920 mp2_at_decoder_deps="audiotoolbox"
2921 mp3_at_decoder_deps="audiotoolbox"
2922 mp1_at_decoder_select="mpegaudioheader"
2923 mp2_at_decoder_select="mpegaudioheader"
2924 mp3_at_decoder_select="mpegaudioheader"
2925 pcm_alaw_at_decoder_deps="audiotoolbox"
2926 pcm_mulaw_at_decoder_deps="audiotoolbox"
2927 qdmc_at_decoder_deps="audiotoolbox"
2928 qdm2_at_decoder_deps="audiotoolbox"
2929 aac_at_encoder_deps="audiotoolbox"
2930 aac_at_encoder_select="audio_frame_queue"
2931 alac_at_encoder_deps="audiotoolbox"
2932 alac_at_encoder_select="audio_frame_queue"
2933 ilbc_at_encoder_deps="audiotoolbox"
2934 ilbc_at_encoder_select="audio_frame_queue"
2935 pcm_alaw_at_encoder_deps="audiotoolbox"
2936 pcm_alaw_at_encoder_select="audio_frame_queue"
2937 pcm_mulaw_at_encoder_deps="audiotoolbox"
2938 pcm_mulaw_at_encoder_select="audio_frame_queue"
2939 chromaprint_muxer_deps="chromaprint"
2940 h264_videotoolbox_encoder_deps="pthreads"
2941 h264_videotoolbox_encoder_select="videotoolbox_encoder"
2942 hevc_videotoolbox_encoder_deps="pthreads"
2943 hevc_videotoolbox_encoder_select="videotoolbox_encoder"
2944 libcelt_decoder_deps="libcelt"
2945 libfdk_aac_decoder_deps="libfdk_aac"
2946 libfdk_aac_encoder_deps="libfdk_aac"
2947 libfdk_aac_encoder_select="audio_frame_queue"
2948 libgme_demuxer_deps="libgme"
2949 libgsm_decoder_deps="libgsm"
2950 libgsm_encoder_deps="libgsm"
2951 libgsm_ms_decoder_deps="libgsm"
2952 libgsm_ms_encoder_deps="libgsm"
2953 libilbc_decoder_deps="libilbc"
2954 libilbc_encoder_deps="libilbc"
2955 libkvazaar_encoder_deps="libkvazaar"
2956 libmodplug_demuxer_deps="libmodplug"
2957 libmp3lame_encoder_deps="libmp3lame"
2958 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2959 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2960 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2961 libopencore_amrnb_encoder_select="audio_frame_queue"
2962 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2963 libopenh264_decoder_deps="libopenh264"
2964 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2965 libopenh264_encoder_deps="libopenh264"
2966 libopenjpeg_decoder_deps="libopenjpeg"
2967 libopenjpeg_encoder_deps="libopenjpeg"
2968 libopenmpt_demuxer_deps="libopenmpt"
2969 libopus_decoder_deps="libopus"
2970 libopus_encoder_deps="libopus"
2971 libopus_encoder_select="audio_frame_queue"
2972 librsvg_decoder_deps="librsvg"
2973 libshine_encoder_deps="libshine"
2974 libshine_encoder_select="audio_frame_queue"
2975 libspeex_decoder_deps="libspeex"
2976 libspeex_encoder_deps="libspeex"
2977 libspeex_encoder_select="audio_frame_queue"
2978 libtheora_encoder_deps="libtheora"
2979 libtwolame_encoder_deps="libtwolame"
2980 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2981 libvorbis_decoder_deps="libvorbis"
2982 libvorbis_encoder_deps="libvorbis libvorbisenc"
2983 libvorbis_encoder_select="audio_frame_queue"
2984 libvpx_vp8_decoder_deps="libvpx"
2985 libvpx_vp8_encoder_deps="libvpx"
2986 libvpx_vp9_decoder_deps="libvpx"
2987 libvpx_vp9_encoder_deps="libvpx"
2988 libwavpack_encoder_deps="libwavpack"
2989 libwavpack_encoder_select="audio_frame_queue"
2990 libwebp_encoder_deps="libwebp"
2991 libwebp_anim_encoder_deps="libwebp"
2992 libx262_encoder_deps="libx262"
2993 libx264_encoder_deps="libx264"
2994 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2995 libx264rgb_encoder_select="libx264_encoder"
2996 libx265_encoder_deps="libx265"
2997 libxavs_encoder_deps="libxavs"
2998 libxvid_encoder_deps="libxvid"
2999 libzvbi_teletext_decoder_deps="libzvbi"
3000 videotoolbox_suggest="coreservices"
3001 videotoolbox_deps="corefoundation coremedia corevideo"
3002 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
3003
3004 # demuxers / muxers
3005 ac3_demuxer_select="ac3_parser"
3006 aiff_muxer_select="iso_media"
3007 asf_demuxer_select="riffdec"
3008 asf_o_demuxer_select="riffdec"
3009 asf_muxer_select="riffenc"
3010 asf_stream_muxer_select="asf_muxer"
3011 avi_demuxer_select="iso_media riffdec exif"
3012 avi_muxer_select="riffenc"
3013 caf_demuxer_select="iso_media riffdec"
3014 caf_muxer_select="iso_media"
3015 dash_muxer_select="mp4_muxer"
3016 dash_demuxer_deps="libxml2"
3017 dirac_demuxer_select="dirac_parser"
3018 dts_demuxer_select="dca_parser"
3019 dtshd_demuxer_select="dca_parser"
3020 dv_demuxer_select="dvprofile"
3021 dv_muxer_select="dvprofile"
3022 dxa_demuxer_select="riffdec"
3023 eac3_demuxer_select="ac3_parser"
3024 f4v_muxer_select="mov_muxer"
3025 fifo_muxer_deps="threads"
3026 flac_demuxer_select="flac_parser"
3027 hds_muxer_select="flv_muxer"
3028 hls_muxer_select="mpegts_muxer"
3029 hls_muxer_suggest="gcrypt openssl"
3030 image2_alias_pix_demuxer_select="image2_demuxer"
3031 image2_brender_pix_demuxer_select="image2_demuxer"
3032 ipod_muxer_select="mov_muxer"
3033 ismv_muxer_select="mov_muxer"
3034 matroska_audio_muxer_select="matroska_muxer"
3035 matroska_demuxer_select="iso_media riffdec"
3036 matroska_demuxer_suggest="bzlib lzo zlib"
3037 matroska_muxer_select="iso_media riffenc"
3038 mmf_muxer_select="riffenc"
3039 mov_demuxer_select="iso_media riffdec"
3040 mov_demuxer_suggest="zlib"
3041 mov_muxer_select="iso_media riffenc rtpenc_chain"
3042 mp3_demuxer_select="mpegaudio_parser"
3043 mp3_muxer_select="mpegaudioheader"
3044 mp4_muxer_select="mov_muxer"
3045 mpegts_demuxer_select="iso_media"
3046 mpegts_muxer_select="adts_muxer latm_muxer"
3047 mpegtsraw_demuxer_select="mpegts_demuxer"
3048 mxf_d10_muxer_select="mxf_muxer"
3049 mxf_opatom_muxer_select="mxf_muxer"
3050 nut_muxer_select="riffenc"
3051 nuv_demuxer_select="riffdec"
3052 oga_muxer_select="ogg_muxer"
3053 ogg_demuxer_select="dirac_parse"
3054 ogv_muxer_select="ogg_muxer"
3055 opus_muxer_select="ogg_muxer"
3056 psp_muxer_select="mov_muxer"
3057 rtp_demuxer_select="sdp_demuxer"
3058 rtp_muxer_select="golomb"
3059 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3060 rtsp_demuxer_select="http_protocol rtpdec"
3061 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3062 sap_demuxer_select="sdp_demuxer"
3063 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3064 sdp_demuxer_select="rtpdec"
3065 smoothstreaming_muxer_select="ismv_muxer"
3066 spdif_demuxer_select="adts_header"
3067 spdif_muxer_select="adts_header"
3068 spx_muxer_select="ogg_muxer"
3069 swf_demuxer_suggest="zlib"
3070 tak_demuxer_select="tak_parser"
3071 tg2_muxer_select="mov_muxer"
3072 tgp_muxer_select="mov_muxer"
3073 vobsub_demuxer_select="mpegps_demuxer"
3074 w64_demuxer_select="wav_demuxer"
3075 w64_muxer_select="wav_muxer"
3076 wav_demuxer_select="riffdec"
3077 wav_muxer_select="riffenc"
3078 webm_muxer_select="iso_media riffenc"
3079 webm_dash_manifest_demuxer_select="matroska_demuxer"
3080 wtv_demuxer_select="mpegts_demuxer riffdec"
3081 wtv_muxer_select="mpegts_muxer riffenc"
3082 xmv_demuxer_select="riffdec"
3083 xwma_demuxer_select="riffdec"
3084
3085 # indevs / outdevs
3086 alsa_indev_deps="alsa"
3087 alsa_outdev_deps="alsa"
3088 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3089 avfoundation_indev_suggest="coregraphics applicationservices"
3090 avfoundation_indev_extralibs="-framework Foundation"
3091 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3092 caca_outdev_deps="libcaca"
3093 decklink_deps_any="libdl LoadLibrary"
3094 decklink_indev_deps="decklink threads"
3095 decklink_indev_extralibs="-lstdc++"
3096 decklink_outdev_deps="decklink threads"
3097 decklink_outdev_extralibs="-lstdc++"
3098 libndi_newtek_indev_deps="libndi_newtek"
3099 libndi_newtek_indev_extralibs="-lndi"
3100 libndi_newtek_outdev_deps="libndi_newtek"
3101 libndi_newtek_outdev_extralibs="-lndi"
3102 dshow_indev_deps="IBaseFilter"
3103 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3104 fbdev_indev_deps="linux_fb_h"
3105 fbdev_outdev_deps="linux_fb_h"
3106 gdigrab_indev_deps="CreateDIBSection"
3107 gdigrab_indev_extralibs="-lgdi32"
3108 gdigrab_indev_select="bmp_decoder"
3109 iec61883_indev_deps="libiec61883"
3110 jack_indev_deps="libjack"
3111 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3112 kmsgrab_indev_deps="libdrm"
3113 lavfi_indev_deps="avfilter"
3114 libcdio_indev_deps="libcdio"
3115 libdc1394_indev_deps="libdc1394"
3116 openal_indev_deps="openal"
3117 opengl_outdev_deps="opengl"
3118 oss_indev_deps_any="sys_soundcard_h"
3119 oss_outdev_deps_any="sys_soundcard_h"
3120 pulse_indev_deps="libpulse"
3121 pulse_outdev_deps="libpulse"
3122 sdl2_outdev_deps="sdl2"
3123 sndio_indev_deps="sndio"
3124 sndio_outdev_deps="sndio"
3125 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3126 v4l2_indev_suggest="libv4l2"
3127 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3128 v4l2_outdev_suggest="libv4l2"
3129 vfwcap_indev_deps="vfw32 vfwcap_defines"
3130 xcbgrab_indev_deps="libxcb"
3131 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3132 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
3133 xv_outdev_extralibs="-lXv -lX11 -lXext"
3134
3135 # protocols
3136 async_protocol_deps="threads"
3137 bluray_protocol_deps="libbluray"
3138 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3139 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
3140 ffrtmpcrypt_protocol_select="tcp_protocol"
3141 ffrtmphttp_protocol_conflict="librtmp_protocol"
3142 ffrtmphttp_protocol_select="http_protocol"
3143 ftp_protocol_select="tcp_protocol"
3144 gopher_protocol_select="network"
3145 http_protocol_select="tcp_protocol"
3146 http_protocol_suggest="zlib"
3147 httpproxy_protocol_select="tcp_protocol"
3148 httpproxy_protocol_suggest="zlib"
3149 https_protocol_select="tls_protocol"
3150 https_protocol_suggest="zlib"
3151 icecast_protocol_select="http_protocol"
3152 librtmp_protocol_deps="librtmp"
3153 librtmpe_protocol_deps="librtmp"
3154 librtmps_protocol_deps="librtmp"
3155 librtmpt_protocol_deps="librtmp"
3156 librtmpte_protocol_deps="librtmp"
3157 libsmbclient_protocol_deps="libsmbclient gplv3"
3158 libssh_protocol_deps="libssh"
3159 mmsh_protocol_select="http_protocol"
3160 mmst_protocol_select="network"
3161 rtmp_protocol_conflict="librtmp_protocol"
3162 rtmp_protocol_select="tcp_protocol"
3163 rtmp_protocol_suggest="zlib"
3164 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3165 rtmpe_protocol_suggest="zlib"
3166 rtmps_protocol_conflict="librtmp_protocol"
3167 rtmps_protocol_select="tls_protocol"
3168 rtmps_protocol_suggest="zlib"
3169 rtmpt_protocol_select="ffrtmphttp_protocol"
3170 rtmpt_protocol_suggest="zlib"
3171 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3172 rtmpte_protocol_suggest="zlib"
3173 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3174 rtmpts_protocol_suggest="zlib"
3175 rtp_protocol_select="udp_protocol"
3176 schannel_conflict="openssl gnutls"
3177 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3178 sctp_protocol_select="network"
3179 securetransport_conflict="openssl gnutls"
3180 srtp_protocol_select="rtp_protocol srtp"
3181 tcp_protocol_select="network"
3182 tls_protocol_deps_any="gnutls openssl schannel securetransport"
3183 tls_protocol_select="tcp_protocol"
3184 udp_protocol_select="network"
3185 udplite_protocol_select="network"
3186 unix_protocol_deps="sys_un_h"
3187 unix_protocol_select="network"
3188
3189 # filters
3190 afftfilt_filter_deps="avcodec"
3191 afftfilt_filter_select="fft"
3192 afir_filter_deps="avcodec"
3193 afir_filter_select="fft"
3194 amovie_filter_deps="avcodec avformat"
3195 aresample_filter_deps="swresample"
3196 ass_filter_deps="libass"
3197 atempo_filter_deps="avcodec"
3198 atempo_filter_select="rdft"
3199 azmq_filter_deps="libzmq"
3200 blackframe_filter_deps="gpl"
3201 boxblur_filter_deps="gpl"
3202 bs2b_filter_deps="libbs2b"
3203 colormatrix_filter_deps="gpl"
3204 coreimage_filter_deps="coreimage appkit"
3205 coreimage_filter_extralibs="-framework OpenGL"
3206 coreimagesrc_filter_deps="coreimage appkit"
3207 coreimagesrc_filter_extralibs="-framework OpenGL"
3208 cover_rect_filter_deps="avcodec avformat gpl"
3209 cropdetect_filter_deps="gpl"
3210 deinterlace_qsv_filter_deps="libmfx"
3211 deinterlace_vaapi_filter_deps="vaapi"
3212 delogo_filter_deps="gpl"
3213 deshake_filter_select="pixelutils"
3214 drawtext_filter_deps="libfreetype"
3215 drawtext_filter_suggest="libfontconfig libfribidi"
3216 elbg_filter_deps="avcodec"
3217 eq_filter_deps="gpl"
3218 fftfilt_filter_deps="avcodec"
3219 fftfilt_filter_select="rdft"
3220 find_rect_filter_deps="avcodec avformat gpl"
3221 firequalizer_filter_deps="avcodec"
3222 firequalizer_filter_select="rdft"
3223 flite_filter_deps="libflite"
3224 framerate_filter_select="pixelutils"
3225 frei0r_filter_deps="frei0r libdl"
3226 frei0r_src_filter_deps="frei0r libdl"
3227 fspp_filter_deps="gpl"
3228 geq_filter_deps="gpl"
3229 histeq_filter_deps="gpl"
3230 hqdn3d_filter_deps="gpl"
3231 interlace_filter_deps="gpl"
3232 kerndeint_filter_deps="gpl"
3233 ladspa_filter_deps="ladspa libdl"
3234 lv2_filter_deps="lv2"
3235 mcdeint_filter_deps="avcodec gpl"
3236 movie_filter_deps="avcodec avformat"
3237 mpdecimate_filter_deps="gpl"
3238 mpdecimate_filter_select="pixelutils"
3239 mptestsrc_filter_deps="gpl"
3240 negate_filter_deps="lut_filter"
3241 nnedi_filter_deps="gpl"
3242 ocr_filter_deps="libtesseract"
3243 ocv_filter_deps="libopencv"
3244 overlay_opencl_filter_deps="opencl"
3245 overlay_qsv_filter_deps="libmfx"
3246 overlay_qsv_filter_select="qsvvpp"
3247 owdenoise_filter_deps="gpl"
3248 pan_filter_deps="swresample"
3249 perspective_filter_deps="gpl"
3250 phase_filter_deps="gpl"
3251 pp7_filter_deps="gpl"
3252 pp_filter_deps="gpl postproc"
3253 pullup_filter_deps="gpl"
3254 removelogo_filter_deps="avcodec avformat swscale"
3255 repeatfields_filter_deps="gpl"
3256 resample_filter_deps="avresample"
3257 rubberband_filter_deps="librubberband"
3258 sab_filter_deps="gpl swscale"
3259 scale2ref_filter_deps="swscale"
3260 scale_filter_deps="swscale"
3261 scale_qsv_filter_deps="libmfx"
3262 select_filter_select="pixelutils"
3263 showcqt_filter_deps="avcodec avformat swscale"
3264 showcqt_filter_suggest="libfontconfig libfreetype"
3265 showcqt_filter_select="fft"
3266 showfreqs_filter_deps="avcodec"
3267 showfreqs_filter_select="fft"
3268 showspectrum_filter_deps="avcodec"
3269 showspectrum_filter_select="fft"
3270 showspectrumpic_filter_deps="avcodec"
3271 showspectrumpic_filter_select="fft"
3272 signature_filter_deps="gpl avcodec avformat"
3273 smartblur_filter_deps="gpl swscale"
3274 sofalizer_filter_deps="libmysofa avcodec"
3275 sofalizer_filter_select="fft"
3276 spectrumsynth_filter_deps="avcodec"
3277 spectrumsynth_filter_select="fft"
3278 spp_filter_deps="gpl avcodec"
3279 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3280 stereo3d_filter_deps="gpl"
3281 subtitles_filter_deps="avformat avcodec libass"
3282 super2xsai_filter_deps="gpl"
3283 pixfmts_super2xsai_test_deps="super2xsai_filter"
3284 tinterlace_filter_deps="gpl"
3285 tinterlace_merge_test_deps="tinterlace_filter"
3286 tinterlace_pad_test_deps="tinterlace_filter"
3287 tonemap_filter_deps="const_nan"
3288 unsharp_opencl_filter_deps="opencl"
3289 uspp_filter_deps="gpl avcodec"
3290 vaguedenoiser_filter_deps="gpl"
3291 vidstabdetect_filter_deps="libvidstab"
3292 vidstabtransform_filter_deps="libvidstab"
3293 libvmaf_filter_deps="libvmaf"
3294 zmq_filter_deps="libzmq"
3295 zoompan_filter_deps="swscale"
3296 zscale_filter_deps="libzimg const_nan"
3297 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3298 vpp_qsv_filter_deps="libmfx"
3299 vpp_qsv_filter_select="qsvvpp"
3300
3301 # examples
3302 avio_dir_cmd_deps="avformat avutil"
3303 avio_reading_deps="avformat avcodec avutil"
3304 decode_audio_example_deps="avcodec avutil"
3305 decode_video_example_deps="avcodec avutil"
3306 demuxing_decoding_example_deps="avcodec avformat avutil"
3307 encode_audio_example_deps="avcodec avutil"
3308 encode_video_example_deps="avcodec avutil"
3309 extract_mvs_example_deps="avcodec avformat avutil"
3310 filter_audio_example_deps="avfilter avutil"
3311 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3312 filtering_video_example_deps="avfilter avcodec avformat avutil"
3313 http_multiclient_example_deps="avformat avutil fork"
3314 hw_decode_example_deps="avcodec avformat avutil"
3315 metadata_example_deps="avformat avutil"
3316 muxing_example_deps="avcodec avformat avutil swscale"
3317 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3318 remuxing_example_deps="avcodec avformat avutil"
3319 resampling_audio_example_deps="avutil swresample"
3320 scaling_video_example_deps="avutil swscale"
3321 transcode_aac_example_deps="avcodec avformat swresample"
3322 transcoding_example_deps="avfilter avcodec avformat avutil"
3323
3324 # EXTRALIBS_LIST
3325 cpu_init_extralibs="pthreads_extralibs"
3326 cws2fws_extralibs="zlib_extralibs"
3327
3328 # libraries, in linking order
3329 avcodec_deps="avutil"
3330 avcodec_suggest="libm"
3331 avcodec_select="null_bsf"
3332 avdevice_deps="avformat avcodec avutil"
3333 avdevice_suggest="libm"
3334 avfilter_deps="avutil"
3335 avfilter_suggest="libm"
3336 avformat_deps="avcodec avutil"
3337 avformat_suggest="libm network zlib"
3338 avresample_deps="avutil"
3339 avresample_suggest="libm"
3340 avutil_suggest="clock_gettime cuda libm libdrm libmfx opencl user32 vaapi videotoolbox corefoundation corevideo coremedia wincrypt"
3341 postproc_deps="avutil gpl"
3342 postproc_suggest="libm"
3343 swresample_deps="avutil"
3344 swresample_suggest="libm libsoxr"
3345 swscale_deps="avutil"
3346 swscale_suggest="libm"
3347
3348 avcodec_extralibs="pthreads_extralibs iconv_extralibs"
3349 avfilter_extralibs="pthreads_extralibs"
3350 avutil_extralibs="d3d11va_extralibs nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3351
3352 # programs
3353 ffmpeg_deps="avcodec avfilter avformat swresample"
3354 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3355                null_filter
3356                trim_filter"
3357 ffmpeg_suggest="ole32 psapi shell32"
3358 ffplay_deps="avcodec avformat swscale swresample sdl2"
3359 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3360 ffplay_suggest="shell32"
3361 ffprobe_deps="avcodec avformat"
3362 ffprobe_suggest="shell32"
3363 ffserver_deps="avformat fork sarestart"
3364 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3365
3366 # documentation
3367 podpages_deps="perl"
3368 manpages_deps="perl pod2man"
3369 htmlpages_deps="perl"
3370 htmlpages_deps_any="makeinfo_html texi2html"
3371 txtpages_deps="perl makeinfo"
3372 doc_deps_any="manpages htmlpages podpages txtpages"
3373
3374 # default parameters
3375
3376 logfile="ffbuild/config.log"
3377
3378 # installation paths
3379 prefix_default="/usr/local"
3380 bindir_default='${prefix}/bin'
3381 datadir_default='${prefix}/share/ffmpeg'
3382 docdir_default='${prefix}/share/doc/ffmpeg'
3383 incdir_default='${prefix}/include'
3384 libdir_default='${prefix}/lib'
3385 mandir_default='${prefix}/share/man'
3386
3387 # toolchain
3388 ar_default="ar"
3389 cc_default="gcc"
3390 cxx_default="g++"
3391 host_cc_default="gcc"
3392 doxygen_default="doxygen"
3393 install="install"
3394 ln_s_default="ln -s -f"
3395 nm_default="nm -g"
3396 pkg_config_default=pkg-config
3397 ranlib_default="ranlib"
3398 strip_default="strip"
3399 version_script='--version-script'
3400 objformat="elf32"
3401 x86asmexe_default="nasm"
3402 windres_default="windres"
3403 nvcc_default="nvcc"
3404 nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
3405 striptype="direct"
3406
3407 # OS
3408 target_os_default=$(tolower $(uname -s))
3409 host_os=$target_os_default
3410
3411 # machine
3412 if test "$target_os_default" = aix; then
3413     arch_default=$(uname -p)
3414     strip_default="strip -X32_64"
3415 else
3416     arch_default=$(uname -m)
3417 fi
3418 cpu="generic"
3419 intrinsics="none"
3420
3421 # configurable options
3422 enable $PROGRAM_LIST
3423 enable $DOCUMENT_LIST
3424 enable $EXAMPLE_LIST
3425 enable $(filter_out avresample $LIBRARY_LIST)
3426 enable stripping
3427
3428 enable asm
3429 enable debug
3430 enable doc
3431 enable faan faandct faanidct
3432 enable optimizations
3433 enable runtime_cpudetect
3434 enable safe_bitstream_reader
3435 enable static
3436 enable swscale_alpha
3437 enable valgrind_backtrace
3438
3439 sws_max_filter_size_default=256
3440 set_default sws_max_filter_size
3441
3442 # internal components are enabled by default
3443 enable $EXTRALIBS_LIST
3444
3445 # Avoid external, non-system, libraries getting enabled by dependency resolution
3446 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3447
3448 # build settings
3449 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3450 LIBPREF="lib"
3451 LIBSUF=".a"
3452 FULLNAME='$(NAME)$(BUILDSUF)'
3453 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3454 SLIBPREF="lib"
3455 SLIBSUF=".so"
3456 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3457 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3458 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3459 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3460 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3461 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3462 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3463
3464 asflags_filter=echo
3465 cflags_filter=echo
3466 ldflags_filter=echo
3467
3468 AS_C='-c'
3469 AS_O='-o $@'
3470 CC_C='-c'
3471 CC_E='-E -o $@'
3472 CC_O='-o $@'
3473 CXX_C='-c'
3474 CXX_O='-o $@'
3475 OBJCC_C='-c'
3476 OBJCC_E='-E -o $@'
3477 OBJCC_O='-o $@'
3478 X86ASM_O='-o $@'
3479 LD_O='-o $@'
3480 LD_LIB='-l%'
3481 LD_PATH='-L'
3482 HOSTCC_C='-c'
3483 HOSTCC_E='-E -o $@'
3484 HOSTCC_O='-o $@'
3485 HOSTLD_O='-o $@'
3486 NVCC_C='-c'
3487 NVCC_O='-o $@'
3488
3489 host_extralibs='-lm'
3490 host_cflags_filter=echo
3491 host_ldflags_filter=echo
3492
3493 target_path='$(CURDIR)'
3494
3495 # since the object filename is not given with the -MM flag, the compiler
3496 # is only able to print the basename, and we must add the path ourselves
3497 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3498 DEPFLAGS='-MM'
3499
3500 mkdir -p ffbuild
3501
3502 # find source path
3503 if test -f configure; then
3504     source_path=.
3505 else
3506     source_path=$(cd $(dirname "$0"); pwd)
3507     case "$source_path" in
3508         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3509     esac
3510     test -e "$source_path/config.h" &&
3511         die "Out of tree builds are impossible with config.h in source dir."
3512 fi
3513
3514 for v in "$@"; do
3515     r=${v#*=}
3516     l=${v%"$r"}
3517     r=$(sh_quote "$r")
3518     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3519 done
3520
3521 find_things(){
3522     thing=$1
3523     pattern=$2
3524     file=$source_path/$3
3525     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3526 }
3527
3528 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3529 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3530 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3531 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3532 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3533 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3534 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3535 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3536 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3537
3538 find_things_extern(){
3539     thing=$1
3540     pattern=$2
3541     file=$source_path/$3
3542     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3543 }
3544
3545 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3546 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3547
3548 AVCODEC_COMPONENTS_LIST="
3549     $BSF_LIST
3550     $DECODER_LIST
3551     $ENCODER_LIST
3552     $HWACCEL_LIST
3553     $PARSER_LIST
3554 "
3555
3556 AVDEVICE_COMPONENTS_LIST="
3557     $INDEV_LIST
3558     $OUTDEV_LIST
3559 "
3560
3561 AVFILTER_COMPONENTS_LIST="
3562     $FILTER_LIST
3563 "
3564
3565 AVFORMAT_COMPONENTS_LIST="
3566     $DEMUXER_LIST
3567     $MUXER_LIST
3568     $PROTOCOL_LIST
3569 "
3570
3571 ALL_COMPONENTS="
3572     $AVCODEC_COMPONENTS_LIST
3573     $AVDEVICE_COMPONENTS_LIST
3574     $AVFILTER_COMPONENTS_LIST
3575     $AVFORMAT_COMPONENTS_LIST
3576 "
3577
3578 for n in $COMPONENT_LIST; do
3579     v=$(toupper ${n%s})_LIST
3580     eval enable \$$v
3581     eval ${n}_if_any="\$$v"
3582 done
3583
3584 enable $ARCH_EXT_LIST
3585
3586 die_unknown(){
3587     echo "Unknown option \"$1\"."
3588     echo "See $0 --help for available options."
3589     exit 1
3590 }
3591
3592 print_in_columns() {
3593     cols=$(expr $ncols / 24)
3594     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3595 }
3596
3597 show_list() {
3598     suffix=_$1
3599     shift
3600     echo $* | sed s/$suffix//g | print_in_columns
3601     exit 0
3602 }
3603
3604 rand_list(){
3605     IFS=', '
3606     set -- $*
3607     unset IFS
3608     for thing; do
3609         comp=${thing%:*}
3610         prob=${thing#$comp}
3611         prob=${prob#:}
3612         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3613         echo "prob ${prob:-0.5}"
3614         printf '%s\n' $comp
3615     done
3616 }
3617
3618 do_random(){
3619     action=$1
3620     shift
3621     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3622     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3623 }
3624
3625 for opt do
3626     optval="${opt#*=}"
3627     case "$opt" in
3628         --extra-ldflags=*)
3629             add_ldflags $optval
3630         ;;
3631         --extra-ldexeflags=*)
3632             add_ldexeflags $optval
3633         ;;
3634         --extra-ldsoflags=*)
3635             add_ldsoflags $optval
3636         ;;
3637         --extra-ldlibflags=*)
3638             warn "The --extra-ldlibflags option is only provided for compatibility and will be\n"\
3639                  "removed in the future. Use --extra-ldsoflags instead."
3640             add_ldsoflags $optval
3641         ;;
3642         --extra-libs=*)
3643             add_extralibs $optval
3644         ;;
3645         --disable-devices)
3646             disable $INDEV_LIST $OUTDEV_LIST
3647         ;;
3648         --enable-debug=*)
3649             debuglevel="$optval"
3650         ;;
3651         --disable-programs)
3652             disable $PROGRAM_LIST
3653         ;;
3654         --disable-everything)
3655             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3656         ;;
3657         --disable-all)
3658             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3659             disable $LIBRARY_LIST $PROGRAM_LIST doc
3660             enable avutil
3661         ;;
3662         --enable-random|--disable-random)
3663             action=${opt%%-random}
3664             do_random ${action#--} $COMPONENT_LIST
3665         ;;
3666         --enable-random=*|--disable-random=*)
3667             action=${opt%%-random=*}
3668             do_random ${action#--} $optval
3669         ;;
3670         --enable-sdl)
3671             enable sdl2
3672         ;;
3673         --enable-*=*|--disable-*=*)
3674             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3675             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3676             eval list=\$$(toupper $thing)_LIST
3677             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3678             list=$(filter "$name" $list)
3679             [ "$list" = "" ] && warn "Option $opt did not match anything"
3680             $action $list
3681         ;;
3682         --enable-yasm|--disable-yasm)
3683             warn "The ${opt} option is only provided for compatibility and will be\n"\
3684                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3685             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3686         ;;
3687         --yasmexe=*)
3688             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3689                  "removed in the future. Use --x86asmexe instead."
3690             x86asmexe="$optval"
3691         ;;
3692         --enable-?*|--disable-?*)
3693             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3694             if is_in $option $COMPONENT_LIST; then
3695                 test $action = disable && action=unset
3696                 eval $action \$$(toupper ${option%s})_LIST
3697             elif is_in $option $CMDLINE_SELECT; then
3698                 $action $option
3699             else
3700                 die_unknown $opt
3701             fi
3702         ;;
3703         --list-*)
3704             NAME="${opt#--list-}"
3705             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3706             NAME=${NAME%s}
3707             eval show_list $NAME \$$(toupper $NAME)_LIST
3708         ;;
3709         --help|-h) show_help
3710         ;;
3711         --quiet|-q) quiet=yes
3712         ;;
3713         --fatal-warnings) enable fatal_warnings
3714         ;;
3715         --libfuzzer=*)
3716             libfuzzer_path="$optval"
3717         ;;
3718         *)
3719             optname="${opt%%=*}"
3720             optname="${optname#--}"
3721             optname=$(echo "$optname" | sed 's/-/_/g')
3722             if is_in $optname $CMDLINE_SET; then
3723                 eval $optname='$optval'
3724             elif is_in $optname $CMDLINE_APPEND; then
3725                 append $optname "$optval"
3726             else
3727                 die_unknown $opt
3728             fi
3729         ;;
3730     esac
3731 done
3732
3733 for e in $env; do
3734     eval "export $e"
3735 done
3736
3737 if disabled autodetect; then
3738
3739     # Unless iconv is explicitely disabled by the user, we still want to probe
3740     # for the iconv from the libc.
3741     disabled iconv || enable libc_iconv
3742
3743     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3744     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3745 fi
3746 # Mark specifically enabled, but normally autodetected libraries as requested.
3747 for lib in $AUTODETECT_LIBS; do
3748     enabled $lib && request $lib
3749 done
3750 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
3751 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3752 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3753
3754 disabled logging && logfile=/dev/null
3755
3756 # command line configuration sanity checks
3757
3758 # we need to build at least one lib type
3759 if ! enabled_any static shared; then
3760     cat <<EOF
3761 At least one library type must be built.
3762 Specify --enable-static to build the static libraries or --enable-shared to
3763 build the shared libraries as well. To only build the shared libraries specify
3764 --disable-static in addition to --enable-shared.
3765 EOF
3766     exit 1
3767 fi
3768
3769 die_license_disabled() {
3770     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3771 }
3772
3773 die_license_disabled_gpl() {
3774     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3775 }
3776
3777 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3778 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3779
3780 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3781 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3782
3783 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3784
3785 enabled_all gnutls openssl &&
3786     die "GnuTLS and OpenSSL must not be enabled at the same time."
3787
3788 # Disable all the library-specific components if the library itself
3789 # is disabled, see AVCODEC_LIST and following _LIST variables.
3790
3791 disable_components(){
3792     disabled ${1} && disable $(
3793         eval components="\$$(toupper ${1})_COMPONENTS"
3794         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3795     )
3796 }
3797
3798 map 'disable_components $v' $LIBRARY_LIST
3799
3800 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3801 set >> $logfile
3802
3803 test -n "$valgrind" && toolchain="valgrind-memcheck"
3804
3805 enabled ossfuzz && {
3806     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
3807     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
3808 }
3809
3810 case "$toolchain" in
3811     *-asan)
3812         cc_default="${toolchain%-asan}"
3813         add_cflags  -fsanitize=address
3814         add_ldflags -fsanitize=address
3815     ;;
3816     *-msan)
3817         cc_default="${toolchain%-msan}"
3818         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3819         add_ldflags -fsanitize=memory
3820     ;;
3821     *-tsan)
3822         cc_default="${toolchain%-tsan}"
3823         add_cflags  -fsanitize=thread -fPIE
3824         add_ldflags -fsanitize=thread -pie
3825         case "$toolchain" in
3826             gcc-tsan)
3827                 add_cflags  -fPIC
3828                 add_ldflags -fPIC
3829                 ;;
3830         esac
3831     ;;
3832     *-usan)
3833         cc_default="${toolchain%-usan}"
3834         add_cflags  -fsanitize=undefined
3835         add_ldflags -fsanitize=undefined
3836     ;;
3837     valgrind-*)
3838         target_exec_default="valgrind"
3839         case "$toolchain" in
3840             valgrind-massif)
3841                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3842                 ;;
3843             valgrind-memcheck)
3844                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3845                 ;;
3846         esac
3847     ;;
3848     msvc)
3849         # Check whether the current MSVC version needs the C99 converter.
3850         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3851         # support enough of C99 to build ffmpeg. Default to the new
3852         # behaviour if the regexp was unable to match anything, since this
3853         # successfully parses the version number of existing supported
3854         # versions that require the converter (MSVC 2010 and 2012).
3855         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3856         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3857             cc_default="cl"
3858             cxx_default="cl"
3859         else
3860             cc_default="c99wrap cl"
3861             cxx_default="c99wrap cl"
3862         fi
3863         ld_default="$source_path/compat/windows/mslink"
3864         nm_default="dumpbin -symbols"
3865         ar_default="lib"
3866         case "$arch" in
3867         aarch64|arm64)
3868             as_default="armasm64"
3869             ;;
3870         arm*)
3871             as_default="armasm"
3872             ;;
3873         esac
3874         target_os_default="win32"
3875         # Use a relative path for TMPDIR. This makes sure all the
3876         # ffconf temp files are written with a relative path, avoiding
3877         # issues with msys/win32 path conversion for MSVC parameters
3878         # such as -Fo<file> or -out:<file>.
3879         TMPDIR=.
3880     ;;
3881     icl)
3882         cc_default="icl"
3883         ld_default="xilink"
3884         nm_default="dumpbin -symbols"
3885         ar_default="xilib"
3886         target_os_default="win32"
3887         TMPDIR=.
3888     ;;
3889     gcov)
3890         add_cflags  -fprofile-arcs -ftest-coverage
3891         add_ldflags -fprofile-arcs -ftest-coverage
3892     ;;
3893     llvm-cov)
3894         add_cflags -fprofile-arcs -ftest-coverage
3895         add_ldflags --coverage
3896     ;;
3897     hardened)
3898         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3899         add_cflags   -fno-strict-overflow -fstack-protector-all
3900         add_ldflags  -Wl,-z,relro -Wl,-z,now
3901         add_cflags   -fPIE
3902         add_ldexeflags -fPIE -pie
3903     ;;
3904     ?*)
3905         die "Unknown toolchain $toolchain"
3906     ;;
3907 esac
3908
3909 if test -n "$cross_prefix"; then
3910     test -n "$arch" && test -n "$target_os" ||
3911         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3912     enable cross_compile
3913 fi
3914
3915 ar_default="${cross_prefix}${ar_default}"
3916 cc_default="${cross_prefix}${cc_default}"
3917 cxx_default="${cross_prefix}${cxx_default}"
3918 nm_default="${cross_prefix}${nm_default}"
3919 pkg_config_default="${cross_prefix}${pkg_config_default}"
3920 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3921     ranlib_default="${cross_prefix}${ranlib_default} -D"
3922 else
3923     ranlib_default="${cross_prefix}${ranlib_default}"
3924 fi
3925 strip_default="${cross_prefix}${strip_default}"
3926 windres_default="${cross_prefix}${windres_default}"
3927
3928 sysinclude_default="${sysroot}/usr/include"
3929
3930 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3931     target_exec target_os x86asmexe nvcc
3932 enabled cross_compile || host_cc_default=$cc
3933 set_default host_cc
3934
3935 pkg_config_fail_message=""
3936 if ! $pkg_config --version >/dev/null 2>&1; then
3937     warn "$pkg_config not found, library detection may fail."
3938     pkg_config=false
3939 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3940     pkg_config_fail_message="
3941 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3942 fi
3943
3944 if test $doxygen != $doxygen_default && \
3945   ! $doxygen --version >/dev/null 2>&1; then
3946     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3947 fi
3948
3949 exesuf() {
3950     case $1 in
3951         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3952     esac
3953 }
3954
3955 EXESUF=$(exesuf $target_os)
3956 HOSTEXESUF=$(exesuf $host_os)
3957
3958 # set temporary file name
3959 : ${TMPDIR:=$TEMPDIR}
3960 : ${TMPDIR:=$TMP}
3961 : ${TMPDIR:=/tmp}
3962
3963 if [ -n "$tempprefix" ] ; then
3964     mktemp(){
3965         tmpname="$tempprefix.${HOSTNAME}.${UID}"
3966         echo "$tmpname"
3967         mkdir "$tmpname"
3968     }
3969 elif ! check_cmd mktemp -u XXXXXX; then
3970     # simple replacement for missing mktemp
3971     # NOT SAFE FOR GENERAL USE
3972     mktemp(){
3973         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3974         echo "$tmpname"
3975         mkdir "$tmpname"
3976     }
3977 fi
3978
3979 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
3980     die "Unable to create temporary directory in $TMPDIR."
3981
3982 tmpfile(){
3983     tmp="${FFTMPDIR}/test"$2
3984     (set -C; exec > $tmp) 2> /dev/null ||
3985         die "Unable to create temporary file in $FFTMPDIR."
3986     eval $1=$tmp
3987 }
3988
3989 trap 'rm -rf -- "$FFTMPDIR"' EXIT
3990 trap 'exit 2' INT
3991
3992 tmpfile TMPASM .asm
3993 tmpfile TMPC   .c
3994 tmpfile TMPCPP .cpp
3995 tmpfile TMPE   $EXESUF
3996 tmpfile TMPH   .h
3997 tmpfile TMPM   .m
3998 tmpfile TMPO   .o
3999 tmpfile TMPS   .S
4000 tmpfile TMPSH  .sh
4001 tmpfile TMPV   .ver
4002
4003 unset -f mktemp
4004
4005 chmod +x $TMPE
4006
4007 # make sure we can execute files in $TMPDIR
4008 cat > $TMPSH 2>> $logfile <<EOF
4009 #! /bin/sh
4010 EOF
4011 chmod +x $TMPSH >> $logfile 2>&1
4012 if ! $TMPSH >> $logfile 2>&1; then
4013     cat <<EOF
4014 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
4015 variable to another directory and make sure that it is not mounted noexec.
4016 EOF
4017     die "Sanity test failed."
4018 fi
4019
4020 armasm_flags(){
4021     for flag; do
4022         case $flag in
4023             # Filter out MSVC cl.exe options from cflags that shouldn't
4024             # be passed to gas-preprocessor
4025             -M[TD]*)                                            ;;
4026             *)                  echo $flag                      ;;
4027         esac
4028    done
4029 }
4030
4031 cparser_flags(){
4032     for flag; do
4033         case $flag in
4034             -Wno-switch)             echo -Wno-switch-enum ;;
4035             -Wno-format-zero-length) ;;
4036             -Wdisabled-optimization) ;;
4037             -Wno-pointer-sign)       echo -Wno-other ;;
4038             *)                       echo $flag ;;
4039         esac
4040     done
4041 }
4042
4043 msvc_common_flags(){
4044     for flag; do
4045         case $flag in
4046             # In addition to specifying certain flags under the compiler
4047             # specific filters, they must be specified here as well or else the
4048             # generic catch all at the bottom will print the original flag.
4049             -Wall)                ;;
4050             -Wextra)              ;;
4051             -std=c99)             ;;
4052             # Common flags
4053             -fomit-frame-pointer) ;;
4054             -g)                   echo -Z7 ;;
4055             -fno-math-errno)      ;;
4056             -fno-common)          ;;
4057             -fno-signed-zeros)    ;;
4058             -fPIC)                ;;
4059             -mthumb)              ;;
4060             -march=*)             ;;
4061             -lz)                  echo zlib.lib ;;
4062             -lx264)               echo libx264.lib ;;
4063             -lstdc++)             ;;
4064             -l*)                  echo ${flag#-l}.lib ;;
4065             -LARGEADDRESSAWARE)   echo $flag ;;
4066             -L*)                  echo -libpath:${flag#-L} ;;
4067             *)                    echo $flag ;;
4068         esac
4069     done
4070 }
4071
4072 msvc_flags(){
4073     msvc_common_flags "$@"
4074     for flag; do
4075         case $flag in
4076             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4077                                        -wd4554 ;;
4078             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4079                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4080                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4081                                        -wd4307 \
4082                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4083         esac
4084     done
4085 }
4086
4087 icl_flags(){
4088     msvc_common_flags "$@"
4089     for flag; do
4090         case $flag in
4091             # Despite what Intel's documentation says -Wall, which is supported
4092             # on Windows, does enable remarks so disable them here.
4093             -Wall)                echo $flag -Qdiag-disable:remark ;;
4094             -std=c99)             echo -Qstd=c99 ;;
4095             -flto)                echo -ipo ;;
4096         esac
4097     done
4098 }
4099
4100 icc_flags(){
4101     for flag; do
4102         case $flag in
4103             -flto)                echo -ipo ;;
4104             *)                    echo $flag ;;
4105         esac
4106     done
4107 }
4108
4109 suncc_flags(){
4110     for flag; do
4111         case $flag in
4112             -march=*|-mcpu=*)
4113                 case "${flag#*=}" in
4114                     native)                   echo -xtarget=native       ;;
4115                     v9|niagara)               echo -xarch=sparc          ;;
4116                     ultrasparc)               echo -xarch=sparcvis       ;;
4117                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4118                     i586|pentium)             echo -xchip=pentium        ;;
4119                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4120                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4121                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4122                     pentium4*)          echo -xtarget=pentium4           ;;
4123                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4124                     *-sse3)             echo -xarch=sse3                 ;;
4125                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4126                     bonnell)                   echo -xarch=ssse3         ;;
4127                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4128                     westmere)                  echo -xtarget=westmere    ;;
4129                     silvermont)                echo -xarch=sse4_2        ;;
4130                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4131                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4132                                                echo -xarch=avx           ;;
4133                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4134                     btver1)                    echo -xarch=amdsse4a      ;;
4135                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4136                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4137                     k8|opteron|athlon64|athlon-fx)
4138                                                echo -xarch=sse2a         ;;
4139                     athlon*)                   echo -xarch=pentium_proa  ;;
4140                 esac
4141                 ;;
4142             -std=c99)             echo -xc99              ;;
4143             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4144             -fPIC)                echo -KPIC -xcode=pic32 ;;
4145             -W*,*)                echo $flag              ;;
4146             -f*-*|-W*|-mimpure-text)                      ;;
4147             -shared)              echo -G                 ;;
4148             *)                    echo $flag              ;;
4149         esac
4150     done
4151 }
4152
4153 probe_cc(){
4154     pfx=$1
4155     _cc=$2
4156     first=$3
4157
4158     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4159     unset _ld_o _ldflags _ld_lib _ld_path
4160     unset _depflags _DEPCMD _DEPFLAGS
4161     _flags_filter=echo
4162
4163     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4164         true # no-op to avoid reading stdin in following checks
4165     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4166         _type=llvm_gcc
4167         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4168         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4169         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4170         _cflags_speed='-O3'
4171         _cflags_size='-Os'
4172     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4173         _type=gcc
4174         gcc_version=$($_cc --version | head -n1)
4175         gcc_basever=$($_cc -dumpversion)
4176         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4177         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4178         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4179         case $gcc_basever in
4180             2) ;;
4181             2.*) ;;
4182             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4183         esac
4184         if [ "$first" = true ]; then
4185             case $gcc_basever in
4186                 4.2*)
4187                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4188             esac
4189         fi
4190         _cflags_speed='-O3'
4191         _cflags_size='-Os'
4192     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4193         _type=icc
4194         _ident=$($_cc --version | head -n1)
4195         _depflags='-MMD'
4196         _cflags_speed='-O3'
4197         _cflags_size='-Os'
4198         _cflags_noopt='-O1'
4199         _flags_filter=icc_flags
4200     elif $_cc -v 2>&1 | grep -q xlc; then
4201         _type=xlc
4202         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4203         _cflags_speed='-O5'
4204         _cflags_size='-O5 -qcompact'
4205     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4206         test -d "$sysroot" || die "No valid sysroot specified."
4207         _type=armcc
4208         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4209         armcc_conf="$PWD/armcc.conf"
4210         $_cc --arm_linux_configure                 \
4211              --arm_linux_config_file="$armcc_conf" \
4212              --configure_sysroot="$sysroot"        \
4213              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4214              die "Error creating armcc configuration file."
4215         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4216         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4217         as_default="${cross_prefix}gcc"
4218         _depflags='-MMD'
4219         _cflags_speed='-O3'
4220         _cflags_size='-Os'
4221     elif $_cc -v 2>&1 | grep -q clang; then
4222         _type=clang
4223         _ident=$($_cc --version 2>/dev/null | head -n1)
4224         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4225         _cflags_speed='-O3'
4226         _cflags_size='-Oz'
4227     elif $_cc -V 2>&1 | grep -q Sun; then
4228         _type=suncc
4229         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4230         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4231         _DEPFLAGS='-xM1 -xc99'
4232         _ldflags='-std=c99'
4233         _cflags_speed='-O5'
4234         _cflags_size='-O5 -xspace'
4235         _flags_filter=suncc_flags
4236     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4237         _type=pathscale
4238         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4239         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4240         _cflags_speed='-O2'
4241         _cflags_size='-Os'
4242         _flags_filter='filter_out -Wdisabled-optimization'
4243     elif $_cc -v 2>&1 | grep -q Open64; then
4244         _type=open64
4245         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4246         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4247         _cflags_speed='-O2'
4248         _cflags_size='-Os'
4249         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4250     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4251         _type=armasm
4252         _ident=$($_cc | head -n1)
4253         # 4509: "This form of conditional instruction is deprecated"
4254         _flags="-nologo -ignore 4509"
4255         _flags_filter=armasm_flags
4256     elif $_cc 2>&1 | grep -q Intel; then
4257         _type=icl
4258         _ident=$($_cc 2>&1 | head -n1)
4259         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4260         # Not only is O3 broken on 13.x+ but it is slower on all previous
4261         # versions (tested) as well.
4262         _cflags_speed="-O2"
4263         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4264         if $_cc 2>&1 | grep -q Linker; then
4265             _ld_o='-out:$@'
4266         else
4267             _ld_o='-Fe$@'
4268         fi
4269         _cc_o='-Fo$@'
4270         _cc_e='-P'
4271         _flags_filter=icl_flags
4272         _ld_lib='lib%.a'
4273         _ld_path='-libpath:'
4274         # -Qdiag-error to make icl error when seeing certain unknown arguments
4275         _flags='-nologo -Qdiag-error:4044,10157'
4276         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4277         # with MSVC which enables it by default.
4278         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4279         disable stripping
4280     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4281         # lld can emulate multiple different linkers; in ms link.exe mode,
4282         # the -? parameter gives the help output which contains an identifyable
4283         # string, while it gives an error in other modes.
4284         _type=lld-link
4285         # The link.exe mode doesn't have a switch for getting the version,
4286         # but we can force it back to gnu mode and get the version from there.
4287         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4288         _ld_o='-out:$@'
4289         _flags_filter=msvc_flags
4290         _ld_lib='lib%.a'
4291         _ld_path='-libpath:'
4292     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4293         _type=msvc
4294         _ident=$($_cc 2>&1 | head -n1)
4295         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4296         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4297         _cflags_speed="-O2"
4298         _cflags_size="-O1"
4299         _cflags_noopt="-O1"
4300         if $_cc -nologo- 2>&1 | grep -q Linker; then
4301             _ld_o='-out:$@'
4302         else
4303             _ld_o='-Fe$@'
4304         fi
4305         _cc_o='-Fo$@'
4306         _cc_e='-P -Fi$@'
4307         _flags_filter=msvc_flags
4308         _ld_lib='lib%.a'
4309         _ld_path='-libpath:'
4310         _flags='-nologo'
4311         disable stripping
4312     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4313         _type=cparser
4314         _ident=$($_cc --version | head -n1)
4315         _depflags='-MMD'
4316         _cflags_speed='-O4'
4317         _cflags_size='-O2'
4318         _flags_filter=cparser_flags
4319     fi
4320
4321     eval ${pfx}_type=\$_type
4322     eval ${pfx}_ident=\$_ident
4323 }
4324
4325 set_ccvars(){
4326     eval ${1}_C=\${_cc_c-\${${1}_C}}
4327     eval ${1}_E=\${_cc_e-\${${1}_E}}
4328     eval ${1}_O=\${_cc_o-\${${1}_O}}
4329
4330     if [ -n "$_depflags" ]; then
4331         eval ${1}_DEPFLAGS=\$_depflags
4332     else
4333         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4334         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4335         eval DEP${1}FLAGS=\$_flags
4336     fi
4337 }
4338
4339 probe_cc cc "$cc" "true"
4340 cflags_filter=$_flags_filter
4341 cflags_speed=$_cflags_speed
4342 cflags_size=$_cflags_size
4343 cflags_noopt=$_cflags_noopt
4344 add_cflags $_flags $_cflags
4345 cc_ldflags=$_ldflags
4346 set_ccvars CC
4347 set_ccvars CXX
4348
4349 probe_cc hostcc "$host_cc"
4350 host_cflags_filter=$_flags_filter
4351 host_cflags_speed=$_cflags_speed
4352 add_host_cflags  $_flags $_cflags
4353 set_ccvars HOSTCC
4354
4355 test -n "$cc_type" && enable $cc_type ||
4356     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4357
4358 : ${as_default:=$cc}
4359 : ${objcc_default:=$cc}
4360 : ${dep_cc_default:=$cc}
4361 : ${ld_default:=$cc}
4362 : ${host_ld_default:=$host_cc}
4363 set_default ar as objcc dep_cc ld ln_s host_ld windres
4364
4365 probe_cc as "$as"
4366 asflags_filter=$_flags_filter
4367 add_asflags $_flags $_cflags
4368 set_ccvars AS
4369
4370 probe_cc objcc "$objcc"
4371 objcflags_filter=$_flags_filter
4372 add_objcflags $_flags $_cflags
4373 set_ccvars OBJC
4374
4375 probe_cc ld "$ld"
4376 ldflags_filter=$_flags_filter
4377 add_ldflags $_flags $_ldflags
4378 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4379 LD_O=${_ld_o-$LD_O}
4380 LD_LIB=${_ld_lib-$LD_LIB}
4381 LD_PATH=${_ld_path-$LD_PATH}
4382
4383 probe_cc hostld "$host_ld"
4384 host_ldflags_filter=$_flags_filter
4385 add_host_ldflags $_flags $_ldflags
4386 HOSTLD_O=${_ld_o-$HOSTLD_O}
4387
4388 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4389     probe_cc depcc "$dep_cc"
4390     CCDEP=${_DEPCMD:-$DEPCMD}
4391     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4392     DEPCCFLAGS=$_flags
4393 fi
4394
4395 if $ar 2>&1 | grep -q Microsoft; then
4396     arflags="-nologo"
4397     ar_o='-out:$@'
4398 elif $ar 2>&1 | grep -q "\[D\] "; then
4399     arflags="rcD"
4400     ar_o='$@'
4401 else
4402     arflags="rc"
4403     ar_o='$@'
4404 fi
4405
4406 add_cflags $extra_cflags
4407 add_cxxflags $extra_cxxflags
4408 add_objcflags $extra_objcflags
4409 add_asflags $extra_cflags
4410
4411 if test -n "$sysroot"; then
4412     case "$cc_type" in
4413         gcc|llvm_gcc|clang)
4414             add_cppflags --sysroot="$sysroot"
4415             add_ldflags --sysroot="$sysroot"
4416         ;;
4417     esac
4418 fi
4419
4420 if test "$cpu" = host; then
4421     enabled cross_compile &&
4422         die "--cpu=host makes no sense when cross-compiling."
4423
4424     case "$cc_type" in
4425         gcc|llvm_gcc)
4426             check_native(){
4427                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4428                 sed -n "/cc1.*$1=/{
4429                             s/.*$1=\\([^ ]*\\).*/\\1/
4430                             p
4431                             q
4432                         }" $TMPE
4433             }
4434             cpu=$(check_native -march || check_native -mcpu)
4435         ;;
4436         clang)
4437             check_native(){
4438                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4439                 sed -n "/cc1.*-target-cpu /{
4440                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4441                             p
4442                             q
4443                         }" $TMPE
4444             }
4445             cpu=$(check_native -march)
4446         ;;
4447     esac
4448
4449     test "${cpu:-host}" = host &&
4450         die "--cpu=host not supported with compiler $cc"
4451 fi
4452
4453 # Deal with common $arch aliases
4454 case "$arch" in
4455     aarch64|arm64)
4456         arch="aarch64"
4457     ;;
4458     arm*|iPad*|iPhone*)
4459         arch="arm"
4460     ;;
4461     mips*|IP*)
4462         case "$arch" in
4463         *el)
4464             add_cppflags -EL
4465             add_ldflags -EL
4466         ;;
4467         *eb)
4468             add_cppflags -EB
4469             add_ldflags -EB
4470         ;;
4471         esac
4472         arch="mips"
4473     ;;
4474     parisc*|hppa*)
4475         arch="parisc"
4476     ;;
4477     "Power Macintosh"|ppc*|powerpc*)
4478         arch="ppc"
4479     ;;
4480     s390|s390x)
4481         arch="s390"
4482     ;;
4483     sh4|sh)
4484         arch="sh4"
4485     ;;
4486     sun4*|sparc*)
4487         arch="sparc"
4488     ;;
4489     tilegx|tile-gx)
4490         arch="tilegx"
4491     ;;
4492     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4493         arch="x86"
4494     ;;
4495 esac
4496
4497 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4498 enable $arch
4499
4500 # Add processor-specific flags
4501 if enabled aarch64; then
4502
4503     case $cpu in
4504         armv*)
4505             cpuflags="-march=$cpu"
4506         ;;
4507         *)
4508             cpuflags="-mcpu=$cpu"
4509         ;;
4510     esac
4511
4512 elif enabled alpha; then
4513
4514     cpuflags="-mcpu=$cpu"
4515
4516 elif enabled arm; then
4517
4518     check_arm_arch() {
4519         check_cpp_condition stddef.h \
4520             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4521             $cpuflags
4522     }
4523
4524     probe_arm_arch() {
4525         if   check_arm_arch 4;        then echo armv4
4526         elif check_arm_arch 4T;       then echo armv4t
4527         elif check_arm_arch 5;        then echo armv5
4528         elif check_arm_arch 5E;       then echo armv5e
4529         elif check_arm_arch 5T;       then echo armv5t
4530         elif check_arm_arch 5TE;      then echo armv5te
4531         elif check_arm_arch 5TEJ;     then echo armv5te
4532         elif check_arm_arch 6;        then echo armv6
4533         elif check_arm_arch 6J;       then echo armv6j
4534         elif check_arm_arch 6K;       then echo armv6k
4535         elif check_arm_arch 6Z;       then echo armv6z
4536         elif check_arm_arch 6ZK;      then echo armv6zk
4537         elif check_arm_arch 6T2;      then echo armv6t2
4538         elif check_arm_arch 7;        then echo armv7
4539         elif check_arm_arch 7A  7_A;  then echo armv7-a
4540         elif check_arm_arch 7S;       then echo armv7-a
4541         elif check_arm_arch 7R  7_R;  then echo armv7-r
4542         elif check_arm_arch 7M  7_M;  then echo armv7-m
4543         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4544         elif check_arm_arch 8A  8_A;  then echo armv8-a
4545         fi
4546     }
4547
4548     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4549
4550     case $cpu in
4551         armv*)
4552             cpuflags="-march=$cpu"
4553             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4554         ;;
4555         *)
4556             cpuflags="-mcpu=$cpu"
4557             case $cpu in
4558                 cortex-a*)                               subarch=armv7a  ;;
4559                 cortex-r*)                               subarch=armv7r  ;;
4560                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4561                 arm11*)                                  subarch=armv6   ;;
4562                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4563                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4564                 *)                             subarch=$(probe_arm_arch) ;;
4565             esac
4566         ;;
4567     esac
4568
4569     case "$subarch" in
4570         armv5t*)    enable fast_clz                ;;
4571         armv[6-8]*)
4572             enable fast_clz
4573             disabled fast_unaligned || enable fast_unaligned
4574             ;;
4575     esac
4576
4577 elif enabled avr32; then
4578
4579     case $cpu in
4580         ap7[02]0[0-2])
4581             subarch="avr32_ap"
4582             cpuflags="-mpart=$cpu"
4583         ;;
4584         ap)
4585             subarch="avr32_ap"
4586             cpuflags="-march=$cpu"
4587         ;;
4588         uc3[ab]*)
4589             subarch="avr32_uc"
4590             cpuflags="-mcpu=$cpu"
4591         ;;
4592         uc)
4593             subarch="avr32_uc"
4594             cpuflags="-march=$cpu"
4595         ;;
4596     esac
4597
4598 elif enabled bfin; then
4599
4600     cpuflags="-mcpu=$cpu"
4601
4602 elif enabled mips; then
4603
4604     cpuflags="-march=$cpu"
4605
4606     if [ "$cpu" != "generic" ]; then
4607         disable mips32r2
4608         disable mips32r5
4609         disable mips64r2
4610         disable mips32r6
4611         disable mips64r6
4612         disable loongson2
4613         disable loongson3
4614
4615         case $cpu in
4616             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4617                 enable mips32r2
4618                 disable msa
4619             ;;
4620             p5600|i6400|p6600)
4621                 disable mipsdsp
4622                 disable mipsdspr2
4623             ;;
4624             loongson*)
4625                 enable loongson2
4626                 enable loongson3
4627                 enable local_aligned
4628                 enable simd_align_16
4629                 enable fast_64bit
4630                 enable fast_clz
4631                 enable fast_cmov
4632                 enable fast_unaligned
4633                 disable aligned_stack
4634                 disable mipsfpu
4635                 disable mipsdsp
4636                 disable mipsdspr2
4637                 case $cpu in
4638                     loongson3*)
4639                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4640                     ;;
4641                     loongson2e)
4642                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4643                     ;;
4644                     loongson2f)
4645                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4646                     ;;
4647                 esac
4648             ;;
4649             *)
4650                 # Unknown CPU. Disable everything.
4651                 warn "unknown CPU. Disabling all MIPS optimizations."
4652                 disable mipsfpu
4653                 disable mipsdsp
4654                 disable mipsdspr2
4655                 disable msa
4656                 disable mmi
4657             ;;
4658         esac
4659
4660         case $cpu in
4661             24kc)
4662                 disable mipsfpu
4663                 disable mipsdsp
4664                 disable mipsdspr2
4665             ;;
4666             24kf*)
4667                 disable mipsdsp
4668                 disable mipsdspr2
4669             ;;
4670             24kec|34kc|1004kc)
4671                 disable mipsfpu
4672                 disable mipsdspr2
4673             ;;
4674             24kef*|34kf*|1004kf*)
4675                 disable mipsdspr2
4676             ;;
4677             74kc)
4678                 disable mipsfpu
4679             ;;
4680             p5600)
4681                 enable mips32r5
4682                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4683             ;;
4684             i6400)
4685                 enable mips64r6
4686                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4687             ;;
4688             p6600)
4689                 enable mips64r6
4690                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4691             ;;
4692         esac
4693     else
4694         # We do not disable anything. Is up to the user to disable the unwanted features.
4695         warn 'generic cpu selected'
4696     fi
4697
4698 elif enabled ppc; then
4699
4700     disable ldbrx
4701
4702     case $(tolower $cpu) in
4703         601|ppc601|powerpc601)
4704             cpuflags="-mcpu=601"
4705             disable altivec
4706         ;;
4707         603*|ppc603*|powerpc603*)
4708             cpuflags="-mcpu=603"
4709             disable altivec
4710         ;;
4711         604*|ppc604*|powerpc604*)
4712             cpuflags="-mcpu=604"
4713             disable altivec
4714         ;;
4715         g3|75*|ppc75*|powerpc75*)
4716             cpuflags="-mcpu=750"
4717             disable altivec
4718         ;;
4719         g4|745*|ppc745*|powerpc745*)
4720             cpuflags="-mcpu=7450"
4721             disable vsx
4722         ;;
4723         74*|ppc74*|powerpc74*)
4724             cpuflags="-mcpu=7400"
4725             disable vsx
4726         ;;
4727         g5|970|ppc970|powerpc970)
4728             cpuflags="-mcpu=970"
4729             disable vsx
4730         ;;
4731         power[3-6]*)
4732             cpuflags="-mcpu=$cpu"
4733             disable vsx
4734         ;;
4735         power[7-8]*)
4736             cpuflags="-mcpu=$cpu"
4737         ;;
4738         cell)
4739             cpuflags="-mcpu=cell"
4740             enable ldbrx
4741             disable vsx
4742         ;;
4743         e500mc)
4744             cpuflags="-mcpu=e500mc"
4745             disable altivec
4746         ;;
4747         e500v2)
4748             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4749             disable altivec
4750             disable dcbzl
4751         ;;
4752         e500)
4753             cpuflags="-mcpu=8540 -mhard-float"
4754             disable altivec
4755             disable dcbzl
4756         ;;
4757     esac
4758
4759 elif enabled sparc; then
4760
4761     case $cpu in
4762         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4763             cpuflags="-mcpu=$cpu"
4764         ;;
4765         ultrasparc*|niagara[234])
4766             cpuflags="-mcpu=$cpu"
4767         ;;
4768     esac
4769
4770 elif enabled x86; then
4771
4772     case $cpu in
4773         i[345]86|pentium)
4774             cpuflags="-march=$cpu"
4775             disable i686
4776             disable mmx
4777         ;;
4778         # targets that do NOT support nopl and conditional mov (cmov)
4779         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4780             cpuflags="-march=$cpu"
4781             disable i686
4782         ;;
4783         # targets that do support nopl and conditional mov (cmov)
4784         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4785         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4786         |amdfam10|barcelona|b[dt]ver*|znver*)
4787             cpuflags="-march=$cpu"
4788             enable i686
4789             enable fast_cmov
4790         ;;
4791         # targets that do support conditional mov but on which it's slow
4792         pentium4|pentium4m|prescott|nocona)
4793             cpuflags="-march=$cpu"
4794             enable i686
4795             disable fast_cmov
4796         ;;
4797     esac
4798
4799 fi
4800
4801 if [ "$cpu" != generic ]; then
4802     add_cflags  $cpuflags
4803     add_asflags $cpuflags
4804     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4805 fi
4806
4807 # compiler sanity check
4808 check_exec <<EOF
4809 int main(void){ return 0; }
4810 EOF
4811 if test "$?" != 0; then
4812     echo "$cc is unable to create an executable file."
4813     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4814         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4815         echo "Only do this if you know what cross compiling means."
4816     fi
4817     die "C compiler test failed."
4818 fi
4819
4820 add_cppflags -D_ISOC99_SOURCE
4821 add_cxxflags -D__STDC_CONSTANT_MACROS
4822 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
4823
4824 # some compilers silently accept -std=c11, so we also need to check that the
4825 # version macro is defined properly
4826 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
4827     add_cflags -std=c11 ||
4828     check_cflags -std=c99
4829
4830 check_cppflags -D_FILE_OFFSET_BITS=64
4831 check_cppflags -D_LARGEFILE_SOURCE
4832
4833 add_host_cppflags -D_ISOC99_SOURCE
4834 check_host_cflags -std=c99
4835 check_host_cflags -Wall
4836 check_host_cflags $host_cflags_speed
4837
4838 check_64bit(){
4839     arch32=$1
4840     arch64=$2
4841     expr=$3
4842     check_code cc "" "int test[2*($expr) - 1]" &&
4843         subarch=$arch64 || subarch=$arch32
4844     enable $subarch
4845 }
4846
4847 case "$arch" in
4848     aarch64|alpha|ia64)
4849         enabled shared && enable_weak pic
4850     ;;
4851     mips)
4852         check_64bit mips mips64 '_MIPS_SIM > 1'
4853         enabled shared && enable_weak pic
4854     ;;
4855     parisc)
4856         check_64bit parisc parisc64 'sizeof(void *) > 4'
4857         enabled shared && enable_weak pic
4858     ;;
4859     ppc)
4860         check_64bit ppc ppc64 'sizeof(void *) > 4'
4861         enabled shared && enable_weak pic
4862     ;;
4863     s390)
4864         check_64bit s390 s390x 'sizeof(void *) > 4'
4865         enabled shared && enable_weak pic
4866     ;;
4867     sparc)
4868         check_64bit sparc sparc64 'sizeof(void *) > 4'
4869         enabled shared && enable_weak pic
4870     ;;
4871     x86)
4872         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4873         # Treat x32 as x64 for now. Note it also needs pic if shared
4874         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4875             subarch=x86_64 && enable x86_64 && disable x86_32
4876         if enabled x86_64; then
4877             enabled shared && enable_weak pic
4878             objformat=elf64
4879         fi
4880     ;;
4881 esac
4882
4883 # OS specific
4884 case $target_os in
4885     aix)
4886         SHFLAGS=-shared
4887         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4888         enabled shared && add_ldflags -Wl,-brtl
4889         arflags='-Xany -r -c'
4890         ;;
4891     android)
4892         disable symver
4893         enable section_data_rel_ro
4894         SLIB_INSTALL_NAME='$(SLIBNAME)'
4895         SLIB_INSTALL_LINKS=
4896         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4897         ;;
4898     haiku)
4899         prefix_default="/boot/common"
4900         network_extralibs="-lnetwork"
4901         host_extralibs=
4902         ;;
4903     sunos)
4904         SHFLAGS='-shared -Wl,-h,$$(@F)'
4905         enabled x86 && append SHFLAGS -mimpure-text
4906         network_extralibs="-lsocket -lnsl"
4907         add_cppflags -D__EXTENSIONS__
4908         # When using suncc to build, the Solaris linker will mark
4909         # an executable with each instruction set encountered by
4910         # the Solaris assembler.  As our libraries contain their own
4911         # guards for processor-specific code, instead suppress
4912         # generation of the HWCAPS ELF section on Solaris x86 only.
4913         enabled_all suncc x86 &&
4914             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4915             add_ldflags -Wl,-M,mapfile
4916         nm_default='nm -P -g'
4917         version_script='-M'
4918         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
4919         ;;
4920     netbsd)
4921         disable symver
4922         oss_indev_extralibs="-lossaudio"
4923         oss_outdev_extralibs="-lossaudio"
4924         enabled gcc || check_ldflags -Wl,-zmuldefs
4925         ;;
4926     openbsd|bitrig)
4927         disable symver
4928         SHFLAGS='-shared'
4929         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4930         SLIB_INSTALL_LINKS=
4931         oss_indev_extralibs="-lossaudio"
4932         oss_outdev_extralibs="-lossaudio"
4933         ;;
4934     dragonfly)
4935         disable symver
4936         ;;
4937     freebsd)
4938         ;;
4939     bsd/os)
4940         add_extralibs -lpoll -lgnugetopt
4941         strip="strip -d"
4942         ;;
4943     darwin)
4944         enabled ppc && add_asflags -force_cpusubtype_ALL
4945         install_name_dir_default='$(SHLIBDIR)'
4946         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4947         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4948         strip="${strip} -x"
4949         add_ldflags -Wl,-dynamic,-search_paths_first
4950         check_cflags -Werror=partial-availability
4951         SLIBSUF=".dylib"
4952         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4953         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4954         enabled x86_64 && objformat="macho64" || objformat="macho32"
4955         enabled_any pic shared x86_64 ||
4956             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4957         check_header dispatch/dispatch.h &&
4958             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
4959         if test -n "$sysroot"; then
4960             is_in -isysroot $cc $CPPFLAGS $CFLAGS || check_cppflags -isysroot $sysroot
4961             is_in -isysroot $ld $LDFLAGS          || check_ldflags  -isysroot $sysroot
4962         fi
4963         version_script='-exported_symbols_list'
4964         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
4965         ;;
4966     msys*)
4967         die "Native MSYS builds are discouraged, please use the MINGW environment."
4968         ;;
4969     mingw32*|mingw64*)
4970         target_os=mingw32
4971         if enabled shared; then
4972             # Cannot build both shared and static libs when using dllimport.
4973             disable static
4974         fi
4975         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4976         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4977         shlibdir_default="$bindir_default"
4978         SLIBPREF=""
4979         SLIBSUF=".dll"
4980         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4981         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4982         SLIB_EXTRA_CMD='cp $(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4983         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4984         SLIB_INSTALL_LINKS=
4985         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4986         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4987         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" AR="$(AR_CMD)" NM="$(NM_CMD)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4988         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--disable-auto-image-base $$(@:$(SLIBSUF)=.def)'
4989         enabled x86_64 && objformat="win64" || objformat="win32"
4990         ranlib=:
4991         enable dos_paths
4992         check_ldflags -Wl,--nxcompat,--dynamicbase
4993         # Lets work around some stupidity in binutils.
4994         # ld will strip relocations from executables even though we need them
4995         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
4996         # however ld then forgets what the entry point should be (oops) so we
4997         # have to manually (re)set it.
4998         if enabled x86_32; then
4999             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
5000         elif enabled x86_64; then
5001             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
5002             check_ldflags -Wl,--high-entropy-va # binutils 2.25
5003             # Set image base >4GB for extra entropy with HEASLR
5004             add_ldexeflags -Wl,--image-base,0x140000000
5005             append SHFLAGS -Wl,--image-base,0x180000000
5006         fi
5007         ;;
5008     win32|win64)
5009         disable symver
5010         if enabled shared; then
5011             # Link to the import library instead of the normal static library
5012             # for shared libs.
5013             LD_LIB='%.lib'
5014             # Cannot build both shared and static libs with MSVC or icl.
5015             disable static
5016         fi
5017         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
5018         shlibdir_default="$bindir_default"
5019         SLIBPREF=""
5020         SLIBSUF=".dll"
5021         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5022         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5023         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5024         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5025         SLIB_INSTALL_LINKS=
5026         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5027         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5028         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5029         enabled x86_64 && objformat="win64" || objformat="win32"
5030         ranlib=:
5031         enable dos_paths
5032         ;;
5033     cygwin*)
5034         target_os=cygwin
5035         shlibdir_default="$bindir_default"
5036         SLIBPREF="cyg"
5037         SLIBSUF=".dll"
5038         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5039         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5040         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5041         SLIB_INSTALL_LINKS=
5042         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
5043         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
5044         enabled x86_64 && objformat="win64" || objformat="win32"
5045         enable dos_paths
5046         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
5047         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5048         ;;
5049     *-dos|freedos|opendos)
5050         network_extralibs="-lsocket"
5051         objformat="coff"
5052         enable dos_paths
5053         add_cppflags -U__STRICT_ANSI__
5054         ;;
5055     linux)
5056         enable section_data_rel_ro
5057         enabled_any arm aarch64 && enable_weak linux_perf
5058         ;;
5059     irix*)
5060         target_os=irix
5061         ranlib="echo ignoring ranlib"
5062         ;;
5063     os/2*)
5064         strip="lxlite -CS"
5065         striptype=""
5066         objformat="aout"
5067         add_cppflags -D_GNU_SOURCE
5068         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
5069         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
5070         LIBSUF="_s.a"
5071         SLIBPREF=""
5072         SLIBSUF=".dll"
5073         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5074         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
5075         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
5076             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
5077             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
5078             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
5079             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
5080         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
5081             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
5082         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5083         SLIB_INSTALL_LINKS=
5084         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
5085         enable dos_paths
5086         enable_weak os2threads
5087         ;;
5088     gnu/kfreebsd)
5089         add_cppflags -D_BSD_SOURCE
5090         ;;
5091     gnu)
5092         ;;
5093     qnx)
5094         add_cppflags -D_QNX_SOURCE
5095         network_extralibs="-lsocket"
5096         ;;
5097     symbian)
5098         SLIBSUF=".dll"
5099         enable dos_paths
5100         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
5101         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
5102         add_ldflags -Wl,--target1-abs,--no-undefined \
5103                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
5104                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
5105         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
5106                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
5107                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
5108         ;;
5109     minix)
5110         ;;
5111     none)
5112         ;;
5113     *)
5114         die "Unknown OS '$target_os'."
5115         ;;
5116 esac
5117
5118 # test if creating links works
5119 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5120 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5121 mkdir "$link_dest"
5122 $ln_s "$link_dest" "$link_name"
5123 touch "$link_dest/test_file"
5124 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5125     # create link to source path
5126     [ -e src ] && rm src
5127     $ln_s "$source_path" src
5128     source_link=src
5129 else
5130     # creating directory links doesn't work
5131     # fall back to using the full source path
5132     source_link="$source_path"
5133 fi
5134 # cleanup
5135 rm -r "$link_dest"
5136 rm -r "$link_name"
5137
5138 # determine libc flavour
5139
5140 probe_libc(){
5141     pfx=$1
5142     pfx_no_=${pfx%_}
5143     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5144     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5145         eval ${pfx}libc_type=uclibc
5146         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5147     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5148         eval ${pfx}libc_type=glibc
5149         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5150     # MinGW headers can be installed on Cygwin, so check for newlib first.
5151     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5152         eval ${pfx}libc_type=newlib
5153         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
5154     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5155     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5156         eval ${pfx}libc_type=mingw64
5157         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5158             add_compat msvcrt/snprintf.o
5159             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5160         fi
5161         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5162         eval test \$${pfx_no_}cc_type = "gcc" &&
5163             add_${pfx}cppflags -D__printf__=__gnu_printf__
5164     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5165          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5166         eval ${pfx}libc_type=mingw32
5167         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5168             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5169             die "ERROR: MinGW32 runtime version must be >= 3.15."
5170         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5171         check_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
5172             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5173         check_${pfx}cpp_condition windows.h "defined(_WIN32_WINNT) && _WIN32_WINNT < 0x0502" &&
5174             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
5175         eval test \$${pfx_no_}cc_type = "gcc" &&
5176             add_${pfx}cppflags -D__printf__=__gnu_printf__
5177     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5178         eval ${pfx}libc_type=msvcrt
5179         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5180             if [ "$pfx" = host_ ]; then
5181                 add_host_cppflags -Dsnprintf=_snprintf
5182             else
5183                 add_compat strtod.o strtod=avpriv_strtod
5184                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5185                                              _snprintf=avpriv_snprintf  \
5186                                              vsnprintf=avpriv_vsnprintf
5187             fi
5188         fi
5189         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5190         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5191         # 0x601 by default unless something else is set by the user.
5192         # This can easily lead to us detecting functions only present
5193         # in such new versions and producing binaries requiring windows 7.0.
5194         # Therefore explicitly set the default to XP unless the user has
5195         # set something else on the command line.
5196         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5197         # family. For these cases, configure is free to use any functions
5198         # found in the SDK headers by default. (Alternatively, we could force
5199         # _WIN32_WINNT to 0x0602 in that case.)
5200         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5201             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
5202 #ifdef WINAPI_FAMILY
5203 #include <winapifamily.h>
5204 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5205 #error not desktop
5206 #endif
5207 #endif
5208 EOF
5209         if [ "$pfx" = "" ]; then
5210             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5211             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5212         fi
5213     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5214         eval ${pfx}libc_type=klibc
5215     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5216         eval ${pfx}libc_type=bionic
5217     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5218         eval ${pfx}libc_type=solaris
5219         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5220     fi
5221     check_${pfx}cc <<EOF
5222 #include <time.h>
5223 void *v = localtime_r;
5224 EOF
5225 test "$?" != 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
5226 #include <time.h>
5227 void *v = localtime_r;
5228 EOF
5229
5230     eval test -n "\${${pfx}libc_type}" && enable ${pfx}libc_${libc_type}
5231 }
5232
5233 probe_libc
5234 probe_libc host_
5235
5236 # hacks for compiler/libc/os combinations
5237
5238 case $libc_type in
5239     bionic)
5240         add_compat strtod.o strtod=avpriv_strtod
5241         ;;
5242 esac
5243
5244 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5245     add_cppflags '-I\$(SRC_PATH)/compat/float'
5246
5247 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5248
5249 set_default libdir
5250 : ${shlibdir_default:="$libdir"}
5251 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5252
5253 set_default $PATHS_LIST
5254 set_default nm
5255
5256 disabled optimizations || enabled ossfuzz || check_cflags -fomit-frame-pointer
5257
5258 enable_weak_pic() {
5259     disabled pic && return
5260     enable pic
5261     add_cppflags -DPIC
5262     case "$target_os" in
5263     mingw*|cygwin*|win*)
5264         ;;
5265     *)
5266         add_cflags -fPIC
5267         add_asflags -fPIC
5268         ;;
5269     esac
5270 }
5271
5272 enabled pic && enable_weak_pic
5273
5274 check_cc <<EOF || die "Symbol mangling check failed."
5275 int ff_extern;
5276 EOF
5277 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5278 extern_prefix=${sym%%ff_extern*}
5279
5280 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
5281
5282 _restrict=
5283 for restrict_keyword in restrict __restrict__ __restrict; do
5284     check_cc <<EOF && _restrict=$restrict_keyword && break
5285 void foo(char * $restrict_keyword p);
5286 EOF
5287 done
5288
5289 check_cc <<EOF && enable pragma_deprecated
5290 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
5291 EOF
5292
5293 check_cc <<EOF || die "endian test failed"
5294 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5295 EOF
5296 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5297
5298 check_cc <<EOF && enable const_nan
5299 #include <math.h>
5300 void foo(void) { struct { double d; } static const bar[] = { { NAN } }; }
5301 EOF
5302
5303 if ! enabled ppc64 || enabled bigendian; then
5304     disable vsx
5305 fi
5306
5307 check_gas() {
5308     log "check_gas using '$as' as AS"
5309     # :vararg is used on aarch64, arm and ppc altivec
5310     check_as <<EOF || return 1
5311 .macro m n, y:vararg=0
5312 \n: .int \y
5313 .endm
5314 m x
5315 EOF
5316     # .altmacro is only used in arm asm
5317     ! enabled arm || check_as <<EOF || return 1
5318 .altmacro
5319 EOF
5320     enable gnu_as
5321     return 0
5322 }
5323
5324 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5325     nogas=:
5326     enabled_any arm aarch64 && nogas=die
5327     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5328     as_noop=-v
5329
5330     case $as_type in
5331         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5332         gcc)  gaspp_as_type=gas ;;
5333         *)    gaspp_as_type=$as_type ;;
5334     esac
5335
5336     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5337
5338     test "${as#*gas-preprocessor.pl}" != "$as" ||
5339     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5340         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5341
5342     if ! check_gas ; then
5343         as=${gas:=$as}
5344         check_gas || \
5345             $nogas "GNU assembler not found, install/update gas-preprocessor"
5346     fi
5347
5348     check_as <<EOF && enable as_func
5349 .func test
5350 .endfunc
5351 EOF
5352 fi
5353
5354 check_inline_asm inline_asm_labels '"1:\n"'
5355
5356 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5357
5358 if enabled aarch64; then
5359     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5360     # internal assembler in clang 3.3 does not support this instruction
5361     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5362     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5363
5364     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5365
5366 elif enabled alpha; then
5367
5368     check_cflags -mieee
5369
5370 elif enabled arm; then
5371
5372     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
5373
5374     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
5375 float func(float a, float b){ return a+b; }
5376 EOF
5377
5378     enabled thumb && check_cflags -mthumb || check_cflags -marm
5379
5380     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
5381         enable vfp_args
5382     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5383         enable vfp_args
5384     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5385         case "${cross_prefix:-$cc}" in
5386             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
5387             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
5388 __asm__ (".eabi_attribute 28, 1");
5389 int main(void) { return 0; }
5390 EOF
5391         esac
5392         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5393     fi
5394
5395     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5396     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5397     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5398     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5399     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5400     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5401     enabled setend  && check_insn setend  'setend be'
5402
5403     [ $target_os = linux ] || [ $target_os = android ] ||
5404         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5405             $ARCH_EXT_LIST_ARM
5406
5407     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5408
5409     check_as <<EOF && enable as_arch_directive
5410 .arch armv7-a
5411 EOF
5412     check_as <<EOF && enable as_fpu_directive
5413 .fpu neon
5414 EOF
5415
5416     # llvm's integrated assembler supports .object_arch from llvm 3.5
5417     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
5418         check_as <<EOF && enable as_object_arch
5419 .object_arch armv4
5420 EOF
5421
5422     # MS armasm fails to assemble our PIC constructs
5423     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5424
5425 elif enabled mips; then
5426
5427     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5428     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5429     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5430
5431     # Enable minimum ISA based on selected options
5432     if enabled mips64; then
5433         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5434         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5435         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5436     else
5437         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5438         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5439         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5440         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5441     fi
5442
5443     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5444     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5445     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_header msa.h || disable msa
5446     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5447     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5448
5449     if enabled bigendian && enabled msa; then
5450         disable msa
5451     fi
5452
5453 elif enabled parisc; then
5454
5455     if enabled gcc; then
5456         case $($cc -dumpversion) in
5457             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5458         esac
5459     fi
5460
5461 elif enabled ppc; then
5462
5463     enable local_aligned
5464
5465     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5466     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5467     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5468     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5469
5470     if enabled altivec; then
5471         check_cflags -maltivec -mabi=altivec
5472
5473         # check if our compiler supports Motorola AltiVec C API
5474         check_code cc altivec.h "vector signed int v1 = (vector signed int) { 0 };
5475                                  vector signed int v2 = (vector signed int) { 1 };
5476                                  v1 = vec_add(v1, v2);" ||
5477             disable altivec
5478
5479         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5480     fi
5481
5482     if enabled vsx; then
5483         check_cflags -mvsx &&
5484         check_code cc altivec.h "int v[4] = { 0 };
5485                                  vector signed int v1 = vec_vsx_ld(0, v);" ||
5486             disable vsx
5487     fi
5488
5489     if enabled power8; then
5490         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
5491     fi
5492
5493 elif enabled x86; then
5494
5495     check_builtin rdtsc    intrin.h   "__rdtsc()"
5496     check_builtin mm_empty mmintrin.h "_mm_empty()"
5497
5498     enable local_aligned
5499
5500     # check whether EBP is available on x86
5501     # As 'i' is stored on the stack, this program will crash
5502     # if the base pointer is used to access it because the
5503     # base pointer is cleared in the inline assembly code.
5504     check_exec_crash <<EOF && enable ebp_available
5505 volatile int i=0;
5506 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5507 return i;
5508 EOF
5509
5510     # check whether EBX is available on x86
5511     check_inline_asm ebx_available '""::"b"(0)' &&
5512         check_inline_asm ebx_available '"":::"%ebx"'
5513
5514     # check whether xmm clobbers are supported
5515     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5516
5517     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5518         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5519
5520     # check whether binutils is new enough to compile SSSE3/MMXEXT
5521     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5522     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5523
5524     probe_x86asm(){
5525         x86asmexe_probe=$1
5526         if check_cmd $x86asmexe_probe -v; then
5527             x86asmexe=$x86asmexe_probe
5528             x86asm_type=nasm
5529             x86asm_debug="-g -F dwarf"
5530             X86ASMDEP=
5531             X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
5532         elif check_cmd $x86asmexe_probe --version; then
5533             x86asmexe=$x86asmexe_probe
5534             x86asm_type=yasm
5535             x86asm_debug="-g dwarf2"
5536             X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
5537             X86ASM_DEPFLAGS=
5538         fi
5539         check_x86asm "movbe ecx, [5]" && enable x86asm
5540     }
5541
5542     if ! disabled_any asm mmx x86asm; then
5543         disable x86asm
5544         for program in $x86asmexe nasm yasm; do
5545             probe_x86asm $program && break
5546         done
5547         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
5548         X86ASMFLAGS="-f $objformat"
5549         enabled pic               && append X86ASMFLAGS "-DPIC"
5550         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
5551         case "$objformat" in
5552             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
5553         esac
5554
5555         check_x86asm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
5556         check_x86asm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
5557         check_x86asm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
5558         check_x86asm "CPU amdnop" || disable cpunop
5559     fi
5560
5561     case "$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_struct windows.h "CONDITION_VARIABLE" Ptr
5679 check_func_headers glob.h glob
5680 enabled xlib &&
5681     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5682
5683 check_header direct.h
5684 check_header dirent.h
5685 check_header dxgidebug.h
5686 check_header dxva.h
5687 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5688 check_header io.h
5689 check_header libcrystalhd/libcrystalhd_if.h
5690 check_header malloc.h
5691 check_header net/udplite.h
5692 check_header poll.h
5693 check_header sys/param.h
5694 check_header sys/resource.h
5695 check_header sys/select.h
5696 check_header sys/time.h
5697 check_header sys/un.h
5698 check_header termios.h
5699 check_header unistd.h
5700 check_header valgrind/valgrind.h
5701 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5702 check_header windows.h
5703 check_header X11/extensions/XvMClib.h
5704 check_header asm/types.h
5705
5706 # it seems there are versions of clang in some distros that try to use the
5707 # gcc headers, which explodes for stdatomic
5708 # so we also check that atomics actually work here
5709 check_builtin stdatomic stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0)"
5710
5711 check_lib advapi32 "windows.h"            RegCloseKey          -ladvapi32
5712 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
5713 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
5714 check_lib wincrypt "windows.h wincrypt.h" CryptGenRandom       -ladvapi32
5715 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
5716
5717 enabled appkit       && check_apple_framework AppKit
5718 enabled audiotoolbox && check_apple_framework AudioToolbox
5719 enabled avfoundation && check_apple_framework AVFoundation
5720 enabled coreimage    && check_apple_framework CoreImage
5721 enabled videotoolbox && check_apple_framework VideoToolbox
5722
5723 check_apple_framework CoreFoundation
5724 check_apple_framework CoreMedia
5725 check_apple_framework CoreVideo
5726
5727 enabled avfoundation && {
5728     disable coregraphics applicationservices
5729     check_lib coregraphics        CoreGraphics/CoreGraphics.h               CGGetActiveDisplayList "-framework CoreGraphics" ||
5730     check_lib applicationservices ApplicationServices/ApplicationServices.h CGGetActiveDisplayList "-framework ApplicationServices"; }
5731
5732 enabled videotoolbox && {
5733     check_lib coreservices CoreServices/CoreServices.h UTGetOSTypeFromString "-framework CoreServices"
5734     check_func_headers CoreMedia/CMFormatDescription.h kCMVideoCodecType_HEVC "-framework CoreMedia"
5735 }
5736
5737 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5738
5739 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5740 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5741 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5742 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5743 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5744
5745 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
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         enable w32threads || disable w32threads
5762     if ! enabled w32threads && enabled winrt; then
5763         check_func_headers "windows.h" CreateThread &&
5764             enable w32threads || disable w32threads
5765     fi
5766 fi
5767
5768 # check for some common methods of building with pthread support
5769 # do this before the optional library checks as some of them require pthreads
5770 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5771     if check_lib pthreads pthread.h pthread_join   -pthread &&
5772        check_lib pthreads pthread.h pthread_create -pthread; then
5773         add_cflags -pthread
5774     elif check_lib pthreads pthread.h pthread_join   -pthreads &&
5775          check_lib pthreads pthread.h pthread_create -pthreads; then
5776         add_cflags -pthreads
5777     elif check_lib pthreads pthread.h pthread_join   -ldl -pthread &&
5778          check_lib pthreads pthread.h pthread_create -ldl -pthread; then
5779         add_cflags -ldl -pthread
5780     elif check_lib pthreads pthread.h pthread_join   -lpthreadGC2 &&
5781          check_lib pthreads pthread.h pthread_create -lpthreadGC2; then
5782         :
5783     elif check_lib pthreads pthread.h pthread_join   -lpthread &&
5784          check_lib pthreads pthread.h pthread_create -lpthread; then
5785         :
5786     elif check_func pthread_join && check_func pthread_create; then
5787         enable pthreads
5788     fi
5789     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
5790
5791     if enabled pthreads; then
5792         check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
5793         check_func pthread_cancel $pthreads_extralibs
5794     fi
5795 fi
5796
5797 enabled  zlib && check_lib zlib   zlib.h      zlibVersion    -lz
5798 enabled bzlib && check_lib bzlib bzlib.h BZ2_bzlibVersion    -lbz2
5799 enabled  lzma && check_lib lzma   lzma.h lzma_version_number -llzma
5800
5801 # On some systems dynamic loading requires no extra linker flags
5802 check_lib libdl dlfcn.h "dlopen dlsym" || check_lib libdl dlfcn.h "dlopen dlsym" -ldl
5803
5804 check_lib libm math.h sin -lm
5805
5806 atan2f_args=2
5807 copysign_args=2
5808 hypot_args=2
5809 ldexpf_args=2
5810 powf_args=2
5811
5812 for func in $MATH_FUNCS; do
5813     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
5814 done
5815
5816 for func in $COMPLEX_FUNCS; do
5817     eval check_complexfunc $func \${${func}_args:-1}
5818 done
5819
5820 # these are off by default, so fail if requested and not available
5821 enabled cuda_sdk          && require cuda_sdk cuda.h cuCtxCreate -lcuda
5822 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
5823 enabled decklink          && { require_header DeckLinkAPI.h &&
5824                                { check_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a060100" || die "ERROR: Decklink API version must be >= 10.6.1."; } }
5825 enabled libndi_newtek     && require_header Processing.NDI.Lib.h
5826 enabled frei0r            && require_header frei0r.h
5827 enabled gmp               && require gmp gmp.h mpz_export -lgmp
5828 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init
5829 enabled jni               && { [ $target_os = "android" ] && check_header jni.h && enabled pthreads || die "ERROR: jni not found"; }
5830 enabled ladspa            && require_header ladspa.h
5831 enabled lv2               && require_pkg_config lv2 lilv-0 "lilv-0/lilv/lilv.h" lilv_world_new
5832 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5833 enabled libass            && require_pkg_config libass libass ass/ass.h ass_library_init
5834 enabled libbluray         && require_pkg_config libbluray libbluray libbluray/bluray.h bd_open
5835 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
5836 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5837                              { check_lib libcelt celt/celt.h celt_decoder_create_custom -lcelt0 ||
5838                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5839 enabled libcaca           && require_pkg_config libcaca caca caca.h caca_create_canvas
5840 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
5841 enabled libdrm            && require_pkg_config libdrm libdrm xf86drm.h drmGetVersion
5842 enabled libfdk_aac        && { check_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
5843                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
5844                                  warn "using libfdk without pkg-config"; } }
5845 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"
5846 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_extralibs
5847 enabled fontconfig        && enable libfontconfig
5848 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
5849 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
5850 enabled libfribidi        && require_pkg_config libfribidi fribidi fribidi.h fribidi_version_info
5851 enabled libgme            && { check_pkg_config libgme libgme gme/gme.h gme_new_emu ||
5852                                require libgme gme/gme.h gme_new_emu -lgme -lstdc++; }
5853 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
5854                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
5855                                done || die "ERROR: libgsm not found"; }
5856 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc $pthreads_extralibs
5857 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
5858 # While it may appear that require is being used as a pkg-config
5859 # fallback for libmfx, it is actually being used to detect a different
5860 # installation route altogether.  If libmfx is installed via the Intel
5861 # Media SDK or Intel Media Server Studio, these don't come with
5862 # pkg-config support.  Instead, users should make sure that the build
5863 # can find the libraries and headers through other means.
5864 enabled libmfx            && { check_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit ||
5865                                { require libmfx "mfx/mfxvideo.h" MFXInit "-llibmfx $advapi32_extralibs" && warn "using libmfx without pkg-config"; } }
5866 enabled libmodplug        && require_pkg_config libmodplug libmodplug libmodplug/modplug.h ModPlug_Load
5867 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
5868 enabled libmysofa         && require libmysofa "mysofa.h" mysofa_load -lmysofa $zlib_extralibs
5869 enabled libnpp            && { check_lib libnpp npp.h nppGetLibVersion -lnppig -lnppicc -lnppc ||
5870                                check_lib libnpp npp.h nppGetLibVersion -lnppi -lnppc ||
5871                                die "ERROR: libnpp not found"; }
5872 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
5873 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
5874 enabled libopencv         && { check_header opencv2/core/core_c.h &&
5875                                { check_pkg_config libopencv opencv opencv2/core/core_c.h cvCreateImageHeader ||
5876                                  require libopencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
5877                                require_pkg_config libopencv opencv opencv/cxcore.h cvCreateImageHeader; }
5878 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
5879 enabled libopenjpeg       && { check_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version ||
5880                                { require_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } }
5881 enabled libopenmpt        && require_pkg_config libopenmpt "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create -lstdc++ && append libopenmpt_extralibs "-lstdc++"
5882 enabled libopus           && {
5883     enabled libopus_decoder && {
5884         require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
5885     }
5886     enabled libopus_encoder && {
5887         require_pkg_config libopus opus opus_multistream.h opus_multistream_surround_encoder_create
5888     }
5889 }
5890 enabled libpulse          && require_pkg_config libpulse libpulse pulse/pulseaudio.h pa_context_new
5891 enabled librsvg           && require_pkg_config librsvg librsvg-2.0 librsvg-2.0/librsvg/rsvg.h rsvg_handle_render_cairo
5892 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
5893 enabled librubberband     && require_pkg_config librubberband "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new -lstdc++ && append librubberband_extralibs "-lstdc++"
5894 enabled libshine          && require_pkg_config libshine shine shine/layer3.h shine_encode_buffer
5895 enabled libsmbclient      && { check_pkg_config libsmbclient smbclient libsmbclient.h smbc_init ||
5896                                require libsmbclient libsmbclient.h smbc_init -lsmbclient; }
5897 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy -lstdc++
5898 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
5899 enabled libssh            && require_pkg_config libssh libssh libssh/sftp.h sftp_init
5900 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init
5901 enabled libtesseract      && require_pkg_config libtesseract tesseract tesseract/capi.h TessBaseAPICreate
5902 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
5903 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
5904                              { check_lib libtwolame twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
5905                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
5906 enabled libv4l2           && require_pkg_config libv4l2 libv4l2 libv4l2.h v4l2_ioctl
5907 enabled libvidstab        && require_pkg_config libvidstab "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
5908 enabled libvmaf           && require_pkg_config libvmaf libvmaf libvmaf.h compute_vmaf
5909 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
5910 enabled libvorbis         && require_pkg_config libvorbis vorbis vorbis/codec.h vorbis_info_init &&
5911                              require_pkg_config libvorbisenc vorbisenc vorbis/vorbisenc.h vorbis_encode_init
5912
5913 enabled libvpx            && {
5914     enabled libvpx_vp8_decoder && {
5915         check_pkg_config libvpx_vp8_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
5916             check_lib libvpx_vp8_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_dec_init_ver VPX_IMG_FMT_HIGHBITDEPTH" -lvpx ||
5917                 die "ERROR: libvpx decoder version must be >=1.4.0";
5918     }
5919     enabled libvpx_vp8_encoder && {
5920         check_pkg_config libvpx_vp8_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
5921             check_lib libvpx_vp8_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VPX_IMG_FMT_HIGHBITDEPTH" -lvpx ||
5922                 die "ERROR: libvpx encoder version must be >=1.4.0";
5923     }
5924     enabled libvpx_vp9_decoder && {
5925         check_pkg_config libvpx_vp9_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
5926             check_lib libvpx_vp9_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx VPX_IMG_FMT_HIGHBITDEPTH" -lvpx
5927     }
5928     enabled libvpx_vp9_encoder && {
5929         check_pkg_config libvpx_vp9_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
5930             check_lib libvpx_vp9_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VPX_IMG_FMT_HIGHBITDEPTH" -lvpx
5931     }
5932     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
5933         die "libvpx enabled but no supported decoders found"
5934     fi
5935 }
5936
5937 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
5938 enabled libwebp           && {
5939     enabled libwebp_encoder      && require_pkg_config libwebp "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
5940     enabled libwebp_anim_encoder && check_pkg_config libwebp_anim_encoder "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit; }
5941 enabled libx264           && { check_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode ||
5942                                { require libx264 "stdint.h x264.h" x264_encoder_encode -lx264 &&
5943                                  warn "using libx264 without pkg-config"; } } &&
5944                              require_cpp_condition x264.h "X264_BUILD >= 118" &&
5945                              { check_cpp_condition x264.h "X264_MPEG2" &&
5946                                enable libx262; }
5947 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
5948                              require_cpp_condition x265.h "X265_BUILD >= 68"
5949 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode "-lxavs $pthreads_extralibs $libm_extralibs"
5950 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
5951 enabled libzimg           && require_pkg_config libzimg "zimg >= 2.3.0" zimg.h zimg_get_api_version
5952 enabled libzmq            && require_pkg_config libzmq libzmq zmq.h zmq_ctx_new
5953 enabled libzvbi           && require_pkg_config libzvbi zvbi-0.2 libzvbi.h vbi_decoder_new &&
5954                              { check_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
5955                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
5956 enabled libxml2           && require_pkg_config libxml2 libxml-2.0 libxml2/libxml/xmlversion.h xmlCheckVersion
5957 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
5958 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
5959                                { ! enabled cross_compile &&
5960                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
5961                                  add_ldflags -L/opt/vc/lib/ &&
5962                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
5963                                die "ERROR: mmal not found" &&
5964                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
5965 enabled openal            && { { for al_extralibs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
5966                                check_lib openal 'AL/al.h' alGetError "${al_extralibs}" && break; done } ||
5967                                die "ERROR: openal not found"; } &&
5968                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
5969                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
5970 enabled opencl            && { check_lib opencl OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
5971                                check_lib opencl CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
5972                                die "ERROR: opencl not found"; } &&
5973                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
5974                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
5975                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
5976 enabled opengl            && { check_lib opengl GL/glx.h glXGetProcAddress "-lGL" ||
5977                                check_lib opengl windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
5978                                check_lib opengl OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
5979                                check_lib opengl ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
5980                                die "ERROR: opengl not found."
5981                              }
5982 enabled omx               && require_header OMX_Core.h
5983 enabled omx_rpi           && { check_header OMX_Core.h ||
5984                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_header OMX_Core.h ; } ||
5985                                die "ERROR: OpenMAX IL headers not found"; } && enable omx
5986 enabled openssl           && { check_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
5987                                check_pkg_config openssl openssl openssl/ssl.h SSL_library_init ||
5988                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
5989                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
5990                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
5991                                die "ERROR: openssl not found"; }
5992 enabled rkmpp             && { { require_pkg_config rkmpp rockchip_mpp rockchip/rk_mpi.h mpp_create ||
5993                                  die "ERROR : Rockchip MPP was not found."; } &&
5994                                { check_func_headers rockchip/rk_mpi_cmd.h "MPP_DEC_GET_FREE_PACKET_SLOT_COUNT" ||
5995                                  die "ERROR: Rockchip MPP is outdated, please get a more recent one."; } &&
5996                                { enabled libdrm ||
5997                                  die "ERROR: rkmpp requires --enable-libdrm"; }
5998                              }
5999
6000 if enabled gcrypt; then
6001     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
6002     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
6003         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
6004         gcrypt_extralibs=$("${GCRYPT_CONFIG}" --libs)
6005         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_extralibs ||
6006             die "ERROR: gcrypt not found"
6007         add_cflags $gcrypt_cflags
6008     else
6009         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
6010     fi
6011 fi
6012
6013 if enabled sdl2; then
6014     SDL2_CONFIG="${cross_prefix}sdl2-config"
6015     if test_pkg_config sdl2 "sdl2 >= 2.0.1 sdl2 < 2.1.0" SDL_events.h SDL_PollEvent; then
6016         check_func SDL_Init $sdl2_extralibs $sdl2_cflags ||
6017             disable sdl2
6018     elif "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
6019         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
6020         sdl2_extralibs=$("${SDL2_CONFIG}" --libs)
6021         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
6022         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
6023         check_func SDL_Init $sdl2_extralibs $sdl2_cflags &&
6024             enable sdl2
6025     fi
6026     if test $target_os = "mingw32"; then
6027         sdl2_extralibs=$(filter_out '-mwindows' $sdl2_extralibs)
6028     fi
6029 fi
6030
6031 if enabled decklink; then
6032     case $target_os in
6033         mingw32*|mingw64*|win32|win64)
6034             decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
6035             decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
6036             ;;
6037     esac
6038 fi
6039
6040 enabled securetransport &&
6041     check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
6042     check_lib securetransport "Security/SecureTransport.h Security/Security.h" "SSLCreateContext" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" ||
6043         disable securetransport
6044
6045 enabled securetransport &&
6046     check_func SecItemImport "-Wl,-framework,CoreFoundation -Wl,-framework,Security"
6047
6048 enabled schannel &&
6049     check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
6050     check_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" &&
6051     schannel_extralibs="-lsecur32" ||
6052         disable schannel
6053
6054 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
6055 enabled makeinfo \
6056     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
6057     && enable makeinfo_html || disable makeinfo_html
6058 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
6059 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
6060 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
6061 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
6062
6063 # check V4L2 codecs available in the API
6064 check_header linux/fb.h
6065 check_header linux/videodev2.h
6066 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6067 check_code cc linux/videodev2.h "int i = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_VIDEO_M2M | V4L2_BUF_FLAG_LAST;" || disable v4l2_m2m
6068 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_VC1_ANNEX_G;" && enable vc1_v4l2_m2m
6069 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG1;" && enable mpeg1_v4l2_m2m
6070 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG2;" && enable mpeg2_v4l2_m2m
6071 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG4;" && enable mpeg4_v4l2_m2m
6072 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_HEVC;" && enable hevc_v4l2_m2m
6073 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_H263;" && enable h263_v4l2_m2m
6074 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_H264;" && enable h264_v4l2_m2m
6075 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_VP8;" && enable vp8_v4l2_m2m
6076 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_VP9;" && enable vp9_v4l2_m2m
6077
6078 check_header sys/videoio.h
6079 check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6080
6081 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
6082 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
6083 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
6084 # w32api 3.12 had it defined wrong
6085 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
6086
6087 check_type "dshow.h" IBaseFilter
6088
6089 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
6090 check_header "dev/bktr/ioctl_meteor.h dev/bktr/ioctl_bt848.h"                   ||
6091     check_header "machine/ioctl_meteor.h machine/ioctl_bt848.h"                 ||
6092     check_header "dev/video/meteor/ioctl_meteor.h dev/video/bktr/ioctl_bt848.h" ||
6093     check_header "dev/ic/bt8xx.h"
6094
6095 if check_struct sys/soundcard.h audio_buf_info bytes; then
6096     enable_sanitized sys/soundcard.h
6097 else
6098     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_sanitized sys/soundcard.h
6099     #include <sys/soundcard.h>
6100     audio_buf_info abc;
6101 EOF
6102 fi
6103
6104 enabled alsa && check_pkg_config alsa alsa "alsa/asoundlib.h" snd_pcm_htimestamp ||
6105     check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound
6106
6107 enabled libjack &&
6108     require_pkg_config libjack jack jack/jack.h jack_port_get_latency_range
6109
6110 enabled sndio && check_lib sndio sndio.h sio_open -lsndio
6111
6112 if enabled libcdio; then
6113     check_pkg_config libcdio libcdio_paranoia "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open ||
6114     check_pkg_config libcdio libcdio_paranoia "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open ||
6115     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6116     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6117     die "ERROR: No usable libcdio/cdparanoia found"
6118 fi
6119
6120 enabled libxcb && check_pkg_config libxcb "xcb >= 1.4" xcb/xcb.h xcb_connect ||
6121     disable libxcb_shm libxcb_shape libxcb_xfixes
6122
6123 if enabled libxcb; then
6124     enabled libxcb_shm    && check_pkg_config libxcb_shm    xcb-shm    xcb/shm.h    xcb_shm_attach
6125     enabled libxcb_shape  && check_pkg_config libxcb_shape  xcb-shape  xcb/shape.h  xcb_shape_get_rectangles
6126     enabled libxcb_xfixes && check_pkg_config libxcb_xfixes xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image
6127 fi
6128
6129 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6130
6131 # d3d11va requires linking directly to dxgi and d3d11 if not building for
6132 # the desktop api partition
6133 check_cpp <<EOF && enable uwp && d3d11va_extralibs="-ldxgi -ld3d11"
6134 #ifdef WINAPI_FAMILY
6135 #include <winapifamily.h>
6136 #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
6137 #error desktop, not uwp
6138 #else
6139 // WINAPI_FAMILY_APP, WINAPI_FAMILY_PHONE_APP => UWP
6140 #endif
6141 #else
6142 #error no family set
6143 #endif
6144 EOF
6145
6146 enabled vaapi &&
6147     check_lib vaapi va/va.h vaInitialize -lva
6148
6149 enabled vaapi &&
6150     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
6151     disable vaapi
6152
6153 enabled vaapi &&
6154     check_lib vaapi_drm "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm
6155
6156 enabled vaapi &&
6157     check_lib vaapi_x11 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 -lX11
6158
6159 enabled vaapi &&
6160     check_cpp_condition "va/va.h" "VA_CHECK_VERSION(1, 0, 0)" &&
6161     enable vaapi_1
6162
6163 if enabled_all opencl vaapi ; then
6164     check_type "CL/cl_intel.h" "clCreateImageFromFdINTEL_fn" &&
6165         enable opencl_vaapi_beignet
6166     if enabled libmfx ; then
6167         check_type "CL/cl.h CL/va_ext.h" "clCreateFromVA_APIMediaSurfaceINTEL_fn" &&
6168             enable opencl_vaapi_intel_media
6169     fi
6170 fi
6171
6172 if enabled_all opencl dxva2 ; then
6173     check_type "CL/cl_dx9_media_sharing.h" cl_dx9_surface_info_khr &&
6174         enable opencl_dxva2
6175 fi
6176
6177 if enabled_all opencl d3d11va ; then
6178     check_type "CL/cl_d3d11.h" clGetDeviceIDsFromD3D11KHR_fn &&
6179         enable opencl_d3d11
6180 fi
6181
6182 if enabled_all opencl libdrm ; then
6183     check_func_headers "CL/cl_ext.h" clImportMemoryARM &&
6184         enable opencl_drm_arm
6185 fi
6186
6187 enabled vdpau &&
6188     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
6189     disable vdpau
6190
6191 enabled vdpau &&
6192     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
6193
6194 enabled crystalhd && check_lib crystalhd "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd
6195
6196 if enabled x86; then
6197     case $target_os in
6198         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6199             ;;
6200         *)
6201             disable cuda cuvid nvdec nvenc
6202             ;;
6203     esac
6204 else
6205     disable cuda cuvid nvdec nvenc
6206 fi
6207
6208 enabled nvenc &&
6209     check_cc -I$source_path <<EOF || disable nvenc
6210 #include "compat/nvenc/nvEncodeAPI.h"
6211 NV_ENCODE_API_FUNCTION_LIST flist;
6212 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6213 int main(void) { return 0; }
6214 EOF
6215
6216 # Funny iconv installations are not unusual, so check it after all flags have been set
6217 if enabled libc_iconv; then
6218     check_func_headers iconv.h iconv
6219 elif enabled iconv; then
6220     check_func_headers iconv.h iconv || check_lib iconv iconv.h iconv -liconv
6221 fi
6222
6223 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6224
6225 # add some useful compiler flags if supported
6226 check_cflags -Wdeclaration-after-statement
6227 check_cflags -Wall
6228 check_cflags -Wdisabled-optimization
6229 check_cflags -Wpointer-arith
6230 check_cflags -Wredundant-decls
6231 check_cflags -Wwrite-strings
6232 check_cflags -Wtype-limits
6233 check_cflags -Wundef
6234 check_cflags -Wmissing-prototypes
6235 check_cflags -Wno-pointer-to-int-cast
6236 check_cflags -Wstrict-prototypes
6237 check_cflags -Wempty-body
6238
6239 if enabled extra_warnings; then
6240     check_cflags -Wcast-qual
6241     check_cflags -Wextra
6242     check_cflags -Wpedantic
6243 fi
6244
6245 check_disable_warning(){
6246     warning_flag=-W${1#-Wno-}
6247     test_cflags $unknown_warning_flags $warning_flag && add_cflags $1
6248 }
6249
6250 test_cflags -Werror=unused-command-line-argument &&
6251     append unknown_warning_flags "-Werror=unused-command-line-argument"
6252 test_cflags -Werror=unknown-warning-option &&
6253     append unknown_warning_flags "-Werror=unknown-warning-option"
6254
6255 check_disable_warning -Wno-parentheses
6256 check_disable_warning -Wno-switch
6257 check_disable_warning -Wno-format-zero-length
6258 check_disable_warning -Wno-pointer-sign
6259 check_disable_warning -Wno-unused-const-variable
6260 check_disable_warning -Wno-bool-operation
6261
6262 check_disable_warning_headers(){
6263     warning_flag=-W${1#-Wno-}
6264     test_cflags $warning_flag && add_cflags_headers $1
6265 }
6266
6267 check_disable_warning_headers -Wno-deprecated-declarations
6268 check_disable_warning_headers -Wno-unused-variable
6269
6270 check_cc <<EOF && enable blocks_extension
6271 void (^block)(void);
6272 EOF
6273
6274 # add some linker flags
6275 check_ldflags -Wl,--warn-common
6276 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6277 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir && add_ldsoflags -Wl,-rpath,$libdir
6278 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6279
6280 # add some strip flags
6281 check_stripflags -x
6282
6283 enabled neon_clobber_test &&
6284     check_ldflags -Wl,--wrap,avcodec_open2              \
6285                   -Wl,--wrap,avcodec_decode_audio4      \
6286                   -Wl,--wrap,avcodec_decode_video2      \
6287                   -Wl,--wrap,avcodec_decode_subtitle2   \
6288                   -Wl,--wrap,avcodec_encode_audio2      \
6289                   -Wl,--wrap,avcodec_encode_video2      \
6290                   -Wl,--wrap,avcodec_encode_subtitle    \
6291                   -Wl,--wrap,avcodec_send_packet        \
6292                   -Wl,--wrap,avcodec_receive_packet     \
6293                   -Wl,--wrap,avcodec_send_frame         \
6294                   -Wl,--wrap,avcodec_receive_frame      \
6295                   -Wl,--wrap,swr_convert                \
6296                   -Wl,--wrap,avresample_convert ||
6297     disable neon_clobber_test
6298
6299 enabled xmm_clobber_test &&
6300     check_ldflags -Wl,--wrap,avcodec_open2              \
6301                   -Wl,--wrap,avcodec_decode_audio4      \
6302                   -Wl,--wrap,avcodec_decode_video2      \
6303                   -Wl,--wrap,avcodec_decode_subtitle2   \
6304                   -Wl,--wrap,avcodec_encode_audio2      \
6305                   -Wl,--wrap,avcodec_encode_video2      \
6306                   -Wl,--wrap,avcodec_encode_subtitle    \
6307                   -Wl,--wrap,avcodec_send_packet        \
6308                   -Wl,--wrap,avcodec_receive_packet     \
6309                   -Wl,--wrap,avcodec_send_frame         \
6310                   -Wl,--wrap,avcodec_receive_frame      \
6311                   -Wl,--wrap,swr_convert                \
6312                   -Wl,--wrap,avresample_convert         \
6313                   -Wl,--wrap,sws_scale ||
6314     disable xmm_clobber_test
6315
6316 check_ld "cc" <<EOF && enable proper_dce
6317 extern const int array[512];
6318 static inline int func(void) { return array[0]; }
6319 int main(void) { return 0; }
6320 EOF
6321
6322 if enabled proper_dce; then
6323     echo "X { local: *; };" > $TMPV
6324     if test_ldflags -Wl,${version_script},$TMPV; then
6325         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6326         quotes='""'
6327         check_cc <<EOF && enable symver_asm_label
6328 void ff_foo(void) __asm__ ("av_foo@VERSION");
6329 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6330 EOF
6331         check_cc <<EOF && enable symver_gnu_asm
6332 __asm__(".symver ff_foo,av_foo@VERSION");
6333 void ff_foo(void) {}
6334 EOF
6335     fi
6336 fi
6337
6338 if [ -z "$optflags" ]; then
6339     if enabled small; then
6340         optflags=$cflags_size
6341     elif enabled optimizations; then
6342         optflags=$cflags_speed
6343     else
6344         optflags=$cflags_noopt
6345     fi
6346 fi
6347
6348 if [ -z "$nvccflags" ]; then
6349     nvccflags=$nvccflags_default
6350 fi
6351
6352 if enabled x86_64 || enabled ppc64 || enabled aarch64; then
6353     nvccflags="$nvccflags -m64"
6354 else
6355     nvccflags="$nvccflags -m32"
6356 fi
6357
6358 check_optflags(){
6359     check_cflags "$@"
6360     enabled lto && check_ldflags "$@"
6361 }
6362
6363 check_optflags $optflags
6364 check_optflags -fno-math-errno
6365 check_optflags -fno-signed-zeros
6366
6367 if enabled lto; then
6368     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6369     check_cflags  -flto
6370     check_ldflags -flto $cpuflags
6371     disable inline_asm_direct_symbol_refs
6372 fi
6373
6374 enabled ftrapv && check_cflags -ftrapv
6375
6376 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6377 int x;
6378 EOF
6379
6380
6381 if enabled icc; then
6382     # Just warnings, no remarks
6383     check_cflags -w1
6384     # -wd: Disable following warnings
6385     # 144, 167, 556: -Wno-pointer-sign
6386     # 188: enumerated type mixed with another type
6387     # 1292: attribute "foo" ignored
6388     # 1419: external declaration in primary source file
6389     # 10006: ignoring unknown option -fno-signed-zeros
6390     # 10148: ignoring unknown option -Wno-parentheses
6391     # 10156: ignoring option '-W'; no argument required
6392     # 13200: No EMMS instruction before call to function
6393     # 13203: No EMMS instruction before return from function
6394     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6395     # 11030: Warning unknown option --as-needed
6396     # 10156: ignoring option '-export'; no argument required
6397     check_ldflags -wd10156,11030
6398     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6399     enable ebp_available
6400     # The test above does not test linking
6401     enabled lto && disable symver_asm_label
6402     if enabled x86_32; then
6403         icc_version=$($cc -dumpversion)
6404         test ${icc_version%%.*} -ge 11 &&
6405             check_cflags -falign-stack=maintain-16-byte ||
6406             disable aligned_stack
6407     fi
6408 elif enabled gcc; then
6409     check_optflags -fno-tree-vectorize
6410     check_cflags -Werror=format-security
6411     check_cflags -Werror=implicit-function-declaration
6412     check_cflags -Werror=missing-prototypes
6413     check_cflags -Werror=return-type
6414     check_cflags -Werror=vla
6415     check_cflags -Wformat
6416     check_cflags -fdiagnostics-color=auto
6417     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6418 elif enabled llvm_gcc; then
6419     check_cflags -mllvm -stack-alignment=16
6420 elif enabled clang; then
6421     check_cflags -mllvm -stack-alignment=16
6422     check_cflags -mstack-alignment=16
6423     check_cflags -Qunused-arguments
6424     check_cflags -Werror=implicit-function-declaration
6425     check_cflags -Werror=missing-prototypes
6426     check_cflags -Werror=return-type
6427 elif enabled cparser; then
6428     add_cflags -Wno-missing-variable-declarations
6429     add_cflags -Wno-empty-statement
6430 elif enabled armcc; then
6431     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6432     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6433     # 2523: use of inline assembly is deprecated
6434     add_cflags -W${armcc_opt},--diag_suppress=2523
6435     add_cflags -W${armcc_opt},--diag_suppress=1207
6436     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6437     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6438     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6439     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6440 elif enabled pathscale; then
6441     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6442     disable inline_asm
6443 elif enabled_any msvc icl; then
6444     enabled x86_32 && disable aligned_stack
6445     enabled_all x86_32 debug && add_cflags -Oy-
6446     enabled debug && add_ldflags -debug
6447     enable pragma_deprecated
6448     if enabled icl; then
6449         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6450         # (correctly) on icl 13.x.
6451         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6452             add_cflags -Qansi-alias
6453         # Some inline asm is not compilable in debug
6454         if enabled debug; then
6455             disable ebp_available
6456             disable ebx_available
6457         fi
6458     fi
6459     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6460     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
6461     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6462     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6463     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6464     # MSVC 2013 and newer can handle it fine.
6465     # If this declspec fails, force including stdlib.h before the restrict redefinition
6466     # happens in config.h.
6467     if [ $_restrict != restrict ]; then
6468         check_cc <<EOF || add_cflags -FIstdlib.h
6469 __declspec($_restrict) void* foo(int);
6470 EOF
6471     fi
6472     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6473     # Issue has been fixed in MSVC v19.00.24218.
6474     check_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6475         check_cflags -d2SSAOptimizer-
6476     # enable utf-8 source processing on VS2015 U2 and newer
6477     check_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6478         add_cflags -utf-8
6479 fi
6480
6481 for pfx in "" host_; do
6482     varname=${pfx%_}cc_type
6483     eval "type=\$$varname"
6484     if [ "$type" = "msvc" ]; then
6485         check_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6486 static inline int foo(int a) { return a; }
6487 EOF
6488     fi
6489 done
6490
6491 case $as_type in
6492     clang)
6493         add_asflags -Qunused-arguments
6494     ;;
6495 esac
6496
6497 case $ld_type in
6498     clang)
6499         check_ldflags -Qunused-arguments
6500     ;;
6501 esac
6502
6503 enable frame_thread_encoder
6504
6505 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6506
6507 check_deps $CONFIG_LIST       \
6508            $CONFIG_EXTRA      \
6509            $HAVE_LIST         \
6510            $ALL_COMPONENTS    \
6511
6512 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"
6513
6514
6515 if test $target_os = "haiku"; then
6516     disable memalign
6517     disable posix_memalign
6518 fi
6519
6520 flatten_extralibs(){
6521     unset nested_entries
6522     list_name=$1
6523     eval list=\$${1}
6524     for entry in $list; do
6525         entry_copy=$entry
6526         resolve entry_copy
6527         append nested_entries $(filter '*_extralibs' $entry_copy)
6528         flat_entries=$(filter_out '*_extralibs' $entry_copy)
6529         eval $entry="\$flat_entries"
6530     done
6531     append $list_name "$nested_entries"
6532
6533     resolve nested_entries
6534     if test -n "$(filter '*_extralibs' $nested_entries)"; then
6535         flatten_extralibs $list_name
6536     fi
6537 }
6538
6539 flatten_extralibs_wrapper(){
6540     list_name=$1
6541     flatten_extralibs $list_name
6542     unique $list_name
6543     resolve $list_name
6544     eval $list_name=\$\(\$ldflags_filter \$$list_name\)
6545     eval printf \''%s'\' \""\$$list_name"\"
6546 }
6547
6548 for linkunit in $LIBRARY_LIST; do
6549     unset current_extralibs
6550     eval components=\$$(toupper ${linkunit})_COMPONENTS_LIST
6551     for comp in ${components}; do
6552         enabled $comp || continue
6553         comp_extralibs="${comp}_extralibs"
6554         append current_extralibs $comp_extralibs
6555     done
6556     eval prepend ${linkunit}_extralibs $current_extralibs
6557 done
6558
6559 for linkunit in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
6560     eval ${linkunit}_extralibs=\$\(flatten_extralibs_wrapper ${linkunit}_extralibs\)
6561 done
6562
6563 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6564
6565 for thread in $THREADS_LIST; do
6566     if enabled $thread; then
6567         test -n "$thread_type" &&
6568             die "ERROR: Only one thread type must be selected." ||
6569             thread_type="$thread"
6570     fi
6571 done
6572
6573 if disabled stdatomic; then
6574     if enabled atomics_gcc; then
6575         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
6576     elif enabled atomics_win32; then
6577         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
6578     elif enabled atomics_suncc; then
6579         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
6580     elif enabled pthreads; then
6581         add_compat atomics/pthread/stdatomic.o
6582         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
6583     else
6584         enabled threads && die "Threading is enabled, but no atomics are available"
6585         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
6586     fi
6587 fi
6588
6589 # Check if requested libraries were found.
6590 for lib in $AUTODETECT_LIBS; do
6591     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
6592 done
6593
6594 enabled zlib && add_cppflags -DZLIB_CONST
6595
6596 # conditional library dependencies, in linking order
6597 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6598 enabled afir_filter         && prepend avfilter_deps "avcodec"
6599 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6600 enabled aresample_filter    && prepend avfilter_deps "swresample"
6601 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6602 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6603 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6604 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6605 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6606 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6607 enabled firequalizer_filter && prepend avfilter_deps "avcodec"
6608 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6609 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6610 enabled pan_filter          && prepend avfilter_deps "swresample"
6611 enabled pp_filter           && prepend avfilter_deps "postproc"
6612 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6613 enabled resample_filter && prepend avfilter_deps "avresample"
6614 enabled sab_filter          && prepend avfilter_deps "swscale"
6615 enabled scale_filter    && prepend avfilter_deps "swscale"
6616 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6617 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6618 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6619 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6620 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6621 enabled signature_filter    && prepend avfilter_deps "avcodec avformat"
6622 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6623 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6624 enabled spp_filter          && prepend avfilter_deps "avcodec"
6625 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6626 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6627 enabled zoompan_filter      && prepend avfilter_deps "swscale"
6628
6629 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6630
6631 #FIXME
6632 enabled sdl2_outdev     && add_cflags $(filter_out '-Dmain=SDL_main' $sdl2_cflags)
6633
6634 enabled opus_decoder    && prepend avcodec_deps "swresample"
6635
6636 expand_deps(){
6637     lib_deps=${1}_deps
6638     eval "deps=\$$lib_deps"
6639     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
6640     unique $lib_deps
6641 }
6642
6643 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6644 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6645
6646 map 'expand_deps $v' $LIBRARY_LIST
6647
6648 license="LGPL version 2.1 or later"
6649 if enabled nonfree; then
6650     license="nonfree and unredistributable"
6651 elif enabled gplv3; then
6652     license="GPL version 3 or later"
6653 elif enabled lgplv3; then
6654     license="LGPL version 3 or later"
6655 elif enabled gpl; then
6656     license="GPL version 2 or later"
6657 fi
6658
6659 if test "$quiet" != "yes"; then
6660
6661 echo "install prefix            $prefix"
6662 echo "source path               $source_path"
6663 echo "C compiler                $cc"
6664 echo "C library                 $libc_type"
6665 if test "$host_cc" != "$cc"; then
6666     echo "host C compiler           $host_cc"
6667     echo "host C library            $host_libc_type"
6668 fi
6669 echo "ARCH                      $arch ($cpu)"
6670 if test "$build_suffix" != ""; then
6671     echo "build suffix              $build_suffix"
6672 fi
6673 if test "$progs_suffix" != ""; then
6674     echo "progs suffix              $progs_suffix"
6675 fi
6676 if test "$extra_version" != ""; then
6677     echo "version string suffix     $extra_version"
6678 fi
6679 echo "big-endian                ${bigendian-no}"
6680 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6681 if enabled x86; then
6682     echo "standalone assembly       ${x86asm-no}"
6683     echo "x86 assembler             ${x86asmexe}"
6684     echo "MMX enabled               ${mmx-no}"
6685     echo "MMXEXT enabled            ${mmxext-no}"
6686     echo "3DNow! enabled            ${amd3dnow-no}"
6687     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6688     echo "SSE enabled               ${sse-no}"
6689     echo "SSSE3 enabled             ${ssse3-no}"
6690     echo "AESNI enabled             ${aesni-no}"
6691     echo "AVX enabled               ${avx-no}"
6692     echo "AVX2 enabled              ${avx2-no}"
6693     echo "XOP enabled               ${xop-no}"
6694     echo "FMA3 enabled              ${fma3-no}"
6695     echo "FMA4 enabled              ${fma4-no}"
6696     echo "i686 features enabled     ${i686-no}"
6697     echo "CMOV is fast              ${fast_cmov-no}"
6698     echo "EBX available             ${ebx_available-no}"
6699     echo "EBP available             ${ebp_available-no}"
6700 fi
6701 if enabled aarch64; then
6702     echo "NEON enabled              ${neon-no}"
6703     echo "VFP enabled               ${vfp-no}"
6704 fi
6705 if enabled arm; then
6706     echo "ARMv5TE enabled           ${armv5te-no}"
6707     echo "ARMv6 enabled             ${armv6-no}"
6708     echo "ARMv6T2 enabled           ${armv6t2-no}"
6709     echo "VFP enabled               ${vfp-no}"
6710     echo "NEON enabled              ${neon-no}"
6711     echo "THUMB enabled             ${thumb-no}"
6712 fi
6713 if enabled mips; then
6714     echo "MIPS FPU enabled          ${mipsfpu-no}"
6715     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
6716     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
6717     echo "MIPS MSA enabled          ${msa-no}"
6718     echo "LOONGSON MMI enabled      ${mmi-no}"
6719 fi
6720 if enabled ppc; then
6721     echo "AltiVec enabled           ${altivec-no}"
6722     echo "VSX enabled               ${vsx-no}"
6723     echo "POWER8 enabled            ${power8-no}"
6724     echo "PPC 4xx optimizations     ${ppc4xx-no}"
6725     echo "dcbzl available           ${dcbzl-no}"
6726 fi
6727 echo "debug symbols             ${debug-no}"
6728 echo "strip symbols             ${stripping-no}"
6729 echo "optimize for size         ${small-no}"
6730 echo "optimizations             ${optimizations-no}"
6731 echo "static                    ${static-no}"
6732 echo "shared                    ${shared-no}"
6733 echo "postprocessing support    ${postproc-no}"
6734 echo "network support           ${network-no}"
6735 echo "threading support         ${thread_type-no}"
6736 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
6737 echo "texi2html enabled         ${texi2html-no}"
6738 echo "perl enabled              ${perl-no}"
6739 echo "pod2man enabled           ${pod2man-no}"
6740 echo "makeinfo enabled          ${makeinfo-no}"
6741 echo "makeinfo supports HTML    ${makeinfo_html-no}"
6742 test -n "$random_seed" &&
6743     echo "random seed               ${random_seed}"
6744 echo
6745
6746 echo "External libraries:"
6747 print_enabled '' $EXTERNAL_LIBRARY_LIST $EXTERNAL_AUTODETECT_LIBRARY_LIST | print_in_columns
6748 echo
6749
6750 echo "External libraries providing hardware acceleration:"
6751 print_enabled '' $HWACCEL_LIBRARY_LIST $HWACCEL_AUTODETECT_LIBRARY_LIST | print_in_columns
6752 echo
6753
6754 echo "Libraries:"
6755 print_enabled '' $LIBRARY_LIST | print_in_columns
6756 echo
6757
6758 echo "Programs:"
6759 print_enabled '' $PROGRAM_LIST | print_in_columns
6760 echo
6761
6762 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
6763     echo "Enabled ${type}s:"
6764     eval list=\$$(toupper $type)_LIST
6765     print_enabled '_*' $list | print_in_columns
6766     echo
6767 done
6768
6769 if test -n "$ignore_tests"; then
6770     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
6771     echo "Ignored FATE tests:"
6772     echo $ignore_tests | print_in_columns
6773     echo
6774 fi
6775
6776 echo "License: $license"
6777
6778 fi # test "$quiet" != "yes"
6779
6780 if test -n "$WARNINGS"; then
6781     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
6782     enabled fatal_warnings && exit 1
6783 fi
6784
6785 test -e Makefile || echo "include $source_path/Makefile" > Makefile
6786
6787 esc(){
6788     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
6789 }
6790
6791 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" > ffbuild/config.fate
6792
6793 enabled stripping || strip="echo skipping strip"
6794 enabled stripping || striptype=""
6795
6796 config_files="$TMPH ffbuild/config.mak doc/config.texi"
6797
6798 cat > ffbuild/config.mak <<EOF
6799 # Automatically generated by configure - do not modify!
6800 ifndef FFMPEG_CONFIG_MAK
6801 FFMPEG_CONFIG_MAK=1
6802 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
6803 prefix=$prefix
6804 LIBDIR=\$(DESTDIR)$libdir
6805 SHLIBDIR=\$(DESTDIR)$shlibdir
6806 INCDIR=\$(DESTDIR)$incdir
6807 BINDIR=\$(DESTDIR)$bindir
6808 DATADIR=\$(DESTDIR)$datadir
6809 DOCDIR=\$(DESTDIR)$docdir
6810 MANDIR=\$(DESTDIR)$mandir
6811 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
6812 INSTALL_NAME_DIR=$install_name_dir
6813 SRC_PATH=$source_path
6814 SRC_LINK=$source_link
6815 ifndef MAIN_MAKEFILE
6816 SRC_PATH:=\$(SRC_PATH:.%=..%)
6817 endif
6818 CC_IDENT=$cc_ident
6819 ARCH=$arch
6820 INTRINSICS=$intrinsics
6821 EXTERN_PREFIX=$extern_prefix
6822 CC=$cc
6823 CXX=$cxx
6824 AS=$as
6825 OBJCC=$objcc
6826 LD=$ld
6827 DEPCC=$dep_cc
6828 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
6829 DEPAS=$as
6830 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
6831 X86ASM=$x86asmexe
6832 DEPX86ASM=$x86asmexe
6833 DEPX86ASMFLAGS=\$(X86ASMFLAGS)
6834 AR=$ar
6835 ARFLAGS=$arflags
6836 AR_O=$ar_o
6837 AR_CMD=$ar
6838 NM_CMD=$nm
6839 RANLIB=$ranlib
6840 STRIP=$strip
6841 STRIPTYPE=$striptype
6842 NVCC=$nvcc
6843 CP=cp -p
6844 LN_S=$ln_s
6845 CPPFLAGS=$CPPFLAGS
6846 CFLAGS=$CFLAGS
6847 CXXFLAGS=$CXXFLAGS
6848 OBJCFLAGS=$OBJCFLAGS
6849 ASFLAGS=$ASFLAGS
6850 NVCCFLAGS=$nvccflags
6851 AS_C=$AS_C
6852 AS_O=$AS_O
6853 OBJCC_C=$OBJCC_C
6854 OBJCC_E=$OBJCC_E
6855 OBJCC_O=$OBJCC_O
6856 CC_C=$CC_C
6857 CC_E=$CC_E
6858 CC_O=$CC_O
6859 CXX_C=$CXX_C
6860 CXX_O=$CXX_O
6861 NVCC_C=$NVCC_C
6862 NVCC_O=$NVCC_O
6863 LD_O=$LD_O
6864 X86ASM_O=$X86ASM_O
6865 LD_LIB=$LD_LIB
6866 LD_PATH=$LD_PATH
6867 WINDRES=$windres
6868 DEPWINDRES=$dep_cc
6869 DOXYGEN=$doxygen
6870 LDFLAGS=$LDFLAGS
6871 LDEXEFLAGS=$LDEXEFLAGS
6872 LDSOFLAGS=$LDSOFLAGS
6873 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
6874 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
6875 X86ASMFLAGS=$X86ASMFLAGS
6876 BUILDSUF=$build_suffix
6877 PROGSSUF=$progs_suffix
6878 FULLNAME=$FULLNAME
6879 LIBPREF=$LIBPREF
6880 LIBSUF=$LIBSUF
6881 LIBNAME=$LIBNAME
6882 SLIBPREF=$SLIBPREF
6883 SLIBSUF=$SLIBSUF
6884 EXESUF=$EXESUF
6885 EXTRA_VERSION=$extra_version
6886 CCDEP=$CCDEP
6887 CXXDEP=$CXXDEP
6888 CCDEP_FLAGS=$CCDEP_FLAGS
6889 ASDEP=$ASDEP
6890 ASDEP_FLAGS=$ASDEP_FLAGS
6891 X86ASMDEP=$X86ASMDEP
6892 X86ASMDEP_FLAGS=$X86ASMDEP_FLAGS
6893 CC_DEPFLAGS=$CC_DEPFLAGS
6894 AS_DEPFLAGS=$AS_DEPFLAGS
6895 X86ASM_DEPFLAGS=$X86ASM_DEPFLAGS
6896 HOSTCC=$host_cc
6897 HOSTLD=$host_ld
6898 HOSTCFLAGS=$host_cflags
6899 HOSTCPPFLAGS=$host_cppflags
6900 HOSTEXESUF=$HOSTEXESUF
6901 HOSTLDFLAGS=$host_ldflags
6902 HOSTEXTRALIBS=$host_extralibs
6903 DEPHOSTCC=$host_cc
6904 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
6905 HOSTCCDEP=$HOSTCCDEP
6906 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
6907 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
6908 HOSTCC_C=$HOSTCC_C
6909 HOSTCC_O=$HOSTCC_O
6910 HOSTLD_O=$HOSTLD_O
6911 TARGET_EXEC=$target_exec $target_exec_args
6912 TARGET_PATH=$target_path
6913 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
6914 CFLAGS-ffplay=${sdl2_cflags}
6915 CFLAGS_HEADERS=$CFLAGS_HEADERS
6916 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
6917 EXTRALIBS=$extralibs
6918 COMPAT_OBJS=$compat_objs
6919 INSTALL=$install
6920 SLIBNAME=${SLIBNAME}
6921 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
6922 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
6923 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
6924 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
6925 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
6926 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
6927 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
6928 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
6929 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
6930 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
6931 NOREDZONE_FLAGS=$noredzone_flags
6932 LIBFUZZER_PATH=$libfuzzer_path
6933 IGNORE_TESTS=$ignore_tests
6934 EOF
6935
6936 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> ffbuild/config.mak' $LIBRARY_LIST
6937
6938 for entry in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
6939     eval echo "EXTRALIBS-${entry}=\$${entry}_extralibs" >> ffbuild/config.mak
6940 done
6941
6942 cat > $TMPH <<EOF
6943 /* Automatically generated by configure - do not modify! */
6944 #ifndef FFMPEG_CONFIG_H
6945 #define FFMPEG_CONFIG_H
6946 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
6947 #define FFMPEG_LICENSE "$(c_escape $license)"
6948 #define CONFIG_THIS_YEAR 2017
6949 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
6950 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
6951 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
6952 #define av_restrict $_restrict
6953 #define EXTERN_PREFIX "${extern_prefix}"
6954 #define EXTERN_ASM ${extern_prefix}
6955 #define BUILDSUF "$build_suffix"
6956 #define SLIBSUF "$SLIBSUF"
6957 #define HAVE_MMX2 HAVE_MMXEXT
6958 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
6959 EOF
6960
6961 test -n "$assert_level" &&
6962     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
6963
6964 test -n "$malloc_prefix" &&
6965     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
6966
6967 if enabled x86asm; then
6968     append config_files $TMPASM
6969     cat > $TMPASM <<EOF
6970 ; Automatically generated by configure - do not modify!
6971 EOF
6972 fi
6973
6974 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
6975
6976
6977 mkdir -p doc
6978 mkdir -p tests
6979 mkdir -p tests/api
6980 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
6981
6982 print_config ARCH_   "$config_files" $ARCH_LIST
6983 print_config HAVE_   "$config_files" $HAVE_LIST
6984 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
6985                                      $CONFIG_EXTRA      \
6986                                      $ALL_COMPONENTS    \
6987
6988 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
6989 echo "endif # FFMPEG_CONFIG_MAK" >> ffbuild/config.mak
6990
6991 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
6992 cp_if_changed $TMPH config.h
6993 touch ffbuild/.config
6994
6995 enabled x86asm && cp_if_changed $TMPASM config.asm
6996
6997 cat > $TMPH <<EOF
6998 /* Generated by ffmpeg configure */
6999 #ifndef AVUTIL_AVCONFIG_H
7000 #define AVUTIL_AVCONFIG_H
7001 EOF
7002
7003 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
7004
7005 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
7006
7007 cp_if_changed $TMPH libavutil/avconfig.h
7008
7009 # generate the lists of enabled components
7010 print_enabled_components(){
7011     file=$1
7012     struct_name=$2
7013     name=$3
7014     shift 3
7015     echo "static const $struct_name * const $name[] = {" > $TMPH
7016     for c in $*; do
7017         enabled $c && printf "    &ff_%s,\n" $c >> $TMPH
7018     done
7019     echo "    NULL };" >> $TMPH
7020     cp_if_changed $TMPH $file
7021 }
7022
7023 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
7024 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
7025
7026 # Settings for pkg-config files
7027
7028 cat > $TMPH <<EOF
7029 # Automatically generated by configure - do not modify!
7030 shared=$shared
7031 build_suffix=$build_suffix
7032 prefix=$prefix
7033 libdir=$libdir
7034 incdir=$incdir
7035 rpath=$(enabled rpath && echo "-Wl,-rpath,\${libdir}")
7036 source_path=${source_path}
7037 LIBPREF=${LIBPREF}
7038 LIBSUF=${LIBSUF}
7039 extralibs_avutil="$avutil_extralibs"
7040 extralibs_avcodec="$avcodec_extralibs"
7041 extralibs_avformat="$avformat_extralibs"
7042 extralibs_avdevice="$avdevice_extralibs"
7043 extralibs_avfilter="$avfilter_extralibs"
7044 extralibs_avresample="$avresample_extralibs"
7045 extralibs_postproc="$postproc_extralibs"
7046 extralibs_swscale="$swscale_extralibs"
7047 extralibs_swresample="$swresample_extralibs"
7048 EOF
7049
7050 for lib in $LIBRARY_LIST; do
7051     lib_deps="$(eval echo \$${lib}_deps)"
7052     echo ${lib}_deps=\"$lib_deps\" >> $TMPH
7053 done
7054
7055 cp_if_changed $TMPH ffbuild/config.sh